Annotation of embedaddon/curl/lib/http.c, revision 1.1
1.1 ! misho 1: /***************************************************************************
! 2: * _ _ ____ _
! 3: * Project ___| | | | _ \| |
! 4: * / __| | | | |_) | |
! 5: * | (__| |_| | _ <| |___
! 6: * \___|\___/|_| \_\_____|
! 7: *
! 8: * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
! 9: *
! 10: * This software is licensed as described in the file COPYING, which
! 11: * you should have received as part of this distribution. The terms
! 12: * are also available at https://curl.haxx.se/docs/copyright.html.
! 13: *
! 14: * You may opt to use, copy, modify, merge, publish, distribute and/or sell
! 15: * copies of the Software, and permit persons to whom the Software is
! 16: * furnished to do so, under the terms of the COPYING file.
! 17: *
! 18: * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
! 19: * KIND, either express or implied.
! 20: *
! 21: ***************************************************************************/
! 22:
! 23: #include "curl_setup.h"
! 24:
! 25: #ifndef CURL_DISABLE_HTTP
! 26:
! 27: #ifdef HAVE_NETINET_IN_H
! 28: #include <netinet/in.h>
! 29: #endif
! 30:
! 31: #ifdef HAVE_NETDB_H
! 32: #include <netdb.h>
! 33: #endif
! 34: #ifdef HAVE_ARPA_INET_H
! 35: #include <arpa/inet.h>
! 36: #endif
! 37: #ifdef HAVE_NET_IF_H
! 38: #include <net/if.h>
! 39: #endif
! 40: #ifdef HAVE_SYS_IOCTL_H
! 41: #include <sys/ioctl.h>
! 42: #endif
! 43:
! 44: #ifdef HAVE_SYS_PARAM_H
! 45: #include <sys/param.h>
! 46: #endif
! 47:
! 48: #include "urldata.h"
! 49: #include <curl/curl.h>
! 50: #include "transfer.h"
! 51: #include "sendf.h"
! 52: #include "formdata.h"
! 53: #include "mime.h"
! 54: #include "progress.h"
! 55: #include "curl_base64.h"
! 56: #include "cookie.h"
! 57: #include "vauth/vauth.h"
! 58: #include "vtls/vtls.h"
! 59: #include "http_digest.h"
! 60: #include "http_ntlm.h"
! 61: #include "curl_ntlm_wb.h"
! 62: #include "http_negotiate.h"
! 63: #include "url.h"
! 64: #include "share.h"
! 65: #include "hostip.h"
! 66: #include "http.h"
! 67: #include "select.h"
! 68: #include "parsedate.h" /* for the week day and month names */
! 69: #include "strtoofft.h"
! 70: #include "multiif.h"
! 71: #include "strcase.h"
! 72: #include "content_encoding.h"
! 73: #include "http_proxy.h"
! 74: #include "warnless.h"
! 75: #include "non-ascii.h"
! 76: #include "http2.h"
! 77: #include "connect.h"
! 78: #include "strdup.h"
! 79: #include "altsvc.h"
! 80:
! 81: /* The last 3 #include files should be in this order */
! 82: #include "curl_printf.h"
! 83: #include "curl_memory.h"
! 84: #include "memdebug.h"
! 85:
! 86: /*
! 87: * Forward declarations.
! 88: */
! 89:
! 90: static int http_getsock_do(struct connectdata *conn,
! 91: curl_socket_t *socks);
! 92: static int http_should_fail(struct connectdata *conn);
! 93:
! 94: #ifndef CURL_DISABLE_PROXY
! 95: static CURLcode add_haproxy_protocol_header(struct connectdata *conn);
! 96: #endif
! 97:
! 98: #ifdef USE_SSL
! 99: static CURLcode https_connecting(struct connectdata *conn, bool *done);
! 100: static int https_getsock(struct connectdata *conn,
! 101: curl_socket_t *socks);
! 102: #else
! 103: #define https_connecting(x,y) CURLE_COULDNT_CONNECT
! 104: #endif
! 105: static CURLcode http_setup_conn(struct connectdata *conn);
! 106:
! 107: /*
! 108: * HTTP handler interface.
! 109: */
! 110: const struct Curl_handler Curl_handler_http = {
! 111: "HTTP", /* scheme */
! 112: http_setup_conn, /* setup_connection */
! 113: Curl_http, /* do_it */
! 114: Curl_http_done, /* done */
! 115: ZERO_NULL, /* do_more */
! 116: Curl_http_connect, /* connect_it */
! 117: ZERO_NULL, /* connecting */
! 118: ZERO_NULL, /* doing */
! 119: ZERO_NULL, /* proto_getsock */
! 120: http_getsock_do, /* doing_getsock */
! 121: ZERO_NULL, /* domore_getsock */
! 122: ZERO_NULL, /* perform_getsock */
! 123: ZERO_NULL, /* disconnect */
! 124: ZERO_NULL, /* readwrite */
! 125: ZERO_NULL, /* connection_check */
! 126: PORT_HTTP, /* defport */
! 127: CURLPROTO_HTTP, /* protocol */
! 128: PROTOPT_CREDSPERREQUEST /* flags */
! 129: };
! 130:
! 131: #ifdef USE_SSL
! 132: /*
! 133: * HTTPS handler interface.
! 134: */
! 135: const struct Curl_handler Curl_handler_https = {
! 136: "HTTPS", /* scheme */
! 137: http_setup_conn, /* setup_connection */
! 138: Curl_http, /* do_it */
! 139: Curl_http_done, /* done */
! 140: ZERO_NULL, /* do_more */
! 141: Curl_http_connect, /* connect_it */
! 142: https_connecting, /* connecting */
! 143: ZERO_NULL, /* doing */
! 144: https_getsock, /* proto_getsock */
! 145: http_getsock_do, /* doing_getsock */
! 146: ZERO_NULL, /* domore_getsock */
! 147: ZERO_NULL, /* perform_getsock */
! 148: ZERO_NULL, /* disconnect */
! 149: ZERO_NULL, /* readwrite */
! 150: ZERO_NULL, /* connection_check */
! 151: PORT_HTTPS, /* defport */
! 152: CURLPROTO_HTTPS, /* protocol */
! 153: PROTOPT_SSL | PROTOPT_CREDSPERREQUEST | PROTOPT_ALPN_NPN /* flags */
! 154: };
! 155: #endif
! 156:
! 157: static CURLcode http_setup_conn(struct connectdata *conn)
! 158: {
! 159: /* allocate the HTTP-specific struct for the Curl_easy, only to survive
! 160: during this request */
! 161: struct HTTP *http;
! 162: struct Curl_easy *data = conn->data;
! 163: DEBUGASSERT(data->req.protop == NULL);
! 164:
! 165: http = calloc(1, sizeof(struct HTTP));
! 166: if(!http)
! 167: return CURLE_OUT_OF_MEMORY;
! 168:
! 169: Curl_mime_initpart(&http->form, conn->data);
! 170: data->req.protop = http;
! 171:
! 172: if(data->set.httpversion == CURL_HTTP_VERSION_3) {
! 173: if(conn->handler->flags & PROTOPT_SSL)
! 174: /* Only go HTTP/3 directly on HTTPS URLs. It needs a UDP socket and does
! 175: the QUIC dance. */
! 176: conn->transport = TRNSPRT_QUIC;
! 177: else {
! 178: failf(data, "HTTP/3 requested for non-HTTPS URL");
! 179: return CURLE_URL_MALFORMAT;
! 180: }
! 181: }
! 182: else {
! 183: if(!CONN_INUSE(conn))
! 184: /* if not already multi-using, setup connection details */
! 185: Curl_http2_setup_conn(conn);
! 186: Curl_http2_setup_req(data);
! 187: }
! 188: return CURLE_OK;
! 189: }
! 190:
! 191: #ifndef CURL_DISABLE_PROXY
! 192: /*
! 193: * checkProxyHeaders() checks the linked list of custom proxy headers
! 194: * if proxy headers are not available, then it will lookup into http header
! 195: * link list
! 196: *
! 197: * It takes a connectdata struct as input instead of the Curl_easy simply to
! 198: * know if this is a proxy request or not, as it then might check a different
! 199: * header list. Provide the header prefix without colon!.
! 200: */
! 201: char *Curl_checkProxyheaders(const struct connectdata *conn,
! 202: const char *thisheader)
! 203: {
! 204: struct curl_slist *head;
! 205: size_t thislen = strlen(thisheader);
! 206: struct Curl_easy *data = conn->data;
! 207:
! 208: for(head = (conn->bits.proxy && data->set.sep_headers) ?
! 209: data->set.proxyheaders : data->set.headers;
! 210: head; head = head->next) {
! 211: if(strncasecompare(head->data, thisheader, thislen) &&
! 212: Curl_headersep(head->data[thislen]))
! 213: return head->data;
! 214: }
! 215:
! 216: return NULL;
! 217: }
! 218: #else
! 219: /* disabled */
! 220: #define Curl_checkProxyheaders(x,y) NULL
! 221: #endif
! 222:
! 223: /*
! 224: * Strip off leading and trailing whitespace from the value in the
! 225: * given HTTP header line and return a strdupped copy. Returns NULL in
! 226: * case of allocation failure. Returns an empty string if the header value
! 227: * consists entirely of whitespace.
! 228: */
! 229: char *Curl_copy_header_value(const char *header)
! 230: {
! 231: const char *start;
! 232: const char *end;
! 233: char *value;
! 234: size_t len;
! 235:
! 236: /* Find the end of the header name */
! 237: while(*header && (*header != ':'))
! 238: ++header;
! 239:
! 240: if(*header)
! 241: /* Skip over colon */
! 242: ++header;
! 243:
! 244: /* Find the first non-space letter */
! 245: start = header;
! 246: while(*start && ISSPACE(*start))
! 247: start++;
! 248:
! 249: /* data is in the host encoding so
! 250: use '\r' and '\n' instead of 0x0d and 0x0a */
! 251: end = strchr(start, '\r');
! 252: if(!end)
! 253: end = strchr(start, '\n');
! 254: if(!end)
! 255: end = strchr(start, '\0');
! 256: if(!end)
! 257: return NULL;
! 258:
! 259: /* skip all trailing space letters */
! 260: while((end > start) && ISSPACE(*end))
! 261: end--;
! 262:
! 263: /* get length of the type */
! 264: len = end - start + 1;
! 265:
! 266: value = malloc(len + 1);
! 267: if(!value)
! 268: return NULL;
! 269:
! 270: memcpy(value, start, len);
! 271: value[len] = 0; /* zero terminate */
! 272:
! 273: return value;
! 274: }
! 275:
! 276: #ifndef CURL_DISABLE_HTTP_AUTH
! 277: /*
! 278: * http_output_basic() sets up an Authorization: header (or the proxy version)
! 279: * for HTTP Basic authentication.
! 280: *
! 281: * Returns CURLcode.
! 282: */
! 283: static CURLcode http_output_basic(struct connectdata *conn, bool proxy)
! 284: {
! 285: size_t size = 0;
! 286: char *authorization = NULL;
! 287: struct Curl_easy *data = conn->data;
! 288: char **userp;
! 289: const char *user;
! 290: const char *pwd;
! 291: CURLcode result;
! 292: char *out;
! 293:
! 294: if(proxy) {
! 295: userp = &conn->allocptr.proxyuserpwd;
! 296: user = conn->http_proxy.user;
! 297: pwd = conn->http_proxy.passwd;
! 298: }
! 299: else {
! 300: userp = &conn->allocptr.userpwd;
! 301: user = conn->user;
! 302: pwd = conn->passwd;
! 303: }
! 304:
! 305: out = aprintf("%s:%s", user, pwd);
! 306: if(!out)
! 307: return CURLE_OUT_OF_MEMORY;
! 308:
! 309: result = Curl_base64_encode(data, out, strlen(out), &authorization, &size);
! 310: if(result)
! 311: goto fail;
! 312:
! 313: if(!authorization) {
! 314: result = CURLE_REMOTE_ACCESS_DENIED;
! 315: goto fail;
! 316: }
! 317:
! 318: free(*userp);
! 319: *userp = aprintf("%sAuthorization: Basic %s\r\n",
! 320: proxy ? "Proxy-" : "",
! 321: authorization);
! 322: free(authorization);
! 323: if(!*userp) {
! 324: result = CURLE_OUT_OF_MEMORY;
! 325: goto fail;
! 326: }
! 327:
! 328: fail:
! 329: free(out);
! 330: return result;
! 331: }
! 332:
! 333: /*
! 334: * http_output_bearer() sets up an Authorization: header
! 335: * for HTTP Bearer authentication.
! 336: *
! 337: * Returns CURLcode.
! 338: */
! 339: static CURLcode http_output_bearer(struct connectdata *conn)
! 340: {
! 341: char **userp;
! 342: CURLcode result = CURLE_OK;
! 343:
! 344: userp = &conn->allocptr.userpwd;
! 345: free(*userp);
! 346: *userp = aprintf("Authorization: Bearer %s\r\n",
! 347: conn->data->set.str[STRING_BEARER]);
! 348:
! 349: if(!*userp) {
! 350: result = CURLE_OUT_OF_MEMORY;
! 351: goto fail;
! 352: }
! 353:
! 354: fail:
! 355: return result;
! 356: }
! 357:
! 358: #endif
! 359:
! 360: /* pickoneauth() selects the most favourable authentication method from the
! 361: * ones available and the ones we want.
! 362: *
! 363: * return TRUE if one was picked
! 364: */
! 365: static bool pickoneauth(struct auth *pick, unsigned long mask)
! 366: {
! 367: bool picked;
! 368: /* only deal with authentication we want */
! 369: unsigned long avail = pick->avail & pick->want & mask;
! 370: picked = TRUE;
! 371:
! 372: /* The order of these checks is highly relevant, as this will be the order
! 373: of preference in case of the existence of multiple accepted types. */
! 374: if(avail & CURLAUTH_NEGOTIATE)
! 375: pick->picked = CURLAUTH_NEGOTIATE;
! 376: else if(avail & CURLAUTH_BEARER)
! 377: pick->picked = CURLAUTH_BEARER;
! 378: else if(avail & CURLAUTH_DIGEST)
! 379: pick->picked = CURLAUTH_DIGEST;
! 380: else if(avail & CURLAUTH_NTLM)
! 381: pick->picked = CURLAUTH_NTLM;
! 382: else if(avail & CURLAUTH_NTLM_WB)
! 383: pick->picked = CURLAUTH_NTLM_WB;
! 384: else if(avail & CURLAUTH_BASIC)
! 385: pick->picked = CURLAUTH_BASIC;
! 386: else {
! 387: pick->picked = CURLAUTH_PICKNONE; /* we select to use nothing */
! 388: picked = FALSE;
! 389: }
! 390: pick->avail = CURLAUTH_NONE; /* clear it here */
! 391:
! 392: return picked;
! 393: }
! 394:
! 395: /*
! 396: * http_perhapsrewind()
! 397: *
! 398: * If we are doing POST or PUT {
! 399: * If we have more data to send {
! 400: * If we are doing NTLM {
! 401: * Keep sending since we must not disconnect
! 402: * }
! 403: * else {
! 404: * If there is more than just a little data left to send, close
! 405: * the current connection by force.
! 406: * }
! 407: * }
! 408: * If we have sent any data {
! 409: * If we don't have track of all the data {
! 410: * call app to tell it to rewind
! 411: * }
! 412: * else {
! 413: * rewind internally so that the operation can restart fine
! 414: * }
! 415: * }
! 416: * }
! 417: */
! 418: static CURLcode http_perhapsrewind(struct connectdata *conn)
! 419: {
! 420: struct Curl_easy *data = conn->data;
! 421: struct HTTP *http = data->req.protop;
! 422: curl_off_t bytessent;
! 423: curl_off_t expectsend = -1; /* default is unknown */
! 424:
! 425: if(!http)
! 426: /* If this is still NULL, we have not reach very far and we can safely
! 427: skip this rewinding stuff */
! 428: return CURLE_OK;
! 429:
! 430: switch(data->set.httpreq) {
! 431: case HTTPREQ_GET:
! 432: case HTTPREQ_HEAD:
! 433: return CURLE_OK;
! 434: default:
! 435: break;
! 436: }
! 437:
! 438: bytessent = data->req.writebytecount;
! 439:
! 440: if(conn->bits.authneg) {
! 441: /* This is a state where we are known to be negotiating and we don't send
! 442: any data then. */
! 443: expectsend = 0;
! 444: }
! 445: else if(!conn->bits.protoconnstart) {
! 446: /* HTTP CONNECT in progress: there is no body */
! 447: expectsend = 0;
! 448: }
! 449: else {
! 450: /* figure out how much data we are expected to send */
! 451: switch(data->set.httpreq) {
! 452: case HTTPREQ_POST:
! 453: case HTTPREQ_PUT:
! 454: if(data->state.infilesize != -1)
! 455: expectsend = data->state.infilesize;
! 456: break;
! 457: case HTTPREQ_POST_FORM:
! 458: case HTTPREQ_POST_MIME:
! 459: expectsend = http->postsize;
! 460: break;
! 461: default:
! 462: break;
! 463: }
! 464: }
! 465:
! 466: conn->bits.rewindaftersend = FALSE; /* default */
! 467:
! 468: if((expectsend == -1) || (expectsend > bytessent)) {
! 469: #if defined(USE_NTLM)
! 470: /* There is still data left to send */
! 471: if((data->state.authproxy.picked == CURLAUTH_NTLM) ||
! 472: (data->state.authhost.picked == CURLAUTH_NTLM) ||
! 473: (data->state.authproxy.picked == CURLAUTH_NTLM_WB) ||
! 474: (data->state.authhost.picked == CURLAUTH_NTLM_WB)) {
! 475: if(((expectsend - bytessent) < 2000) ||
! 476: (conn->http_ntlm_state != NTLMSTATE_NONE) ||
! 477: (conn->proxy_ntlm_state != NTLMSTATE_NONE)) {
! 478: /* The NTLM-negotiation has started *OR* there is just a little (<2K)
! 479: data left to send, keep on sending. */
! 480:
! 481: /* rewind data when completely done sending! */
! 482: if(!conn->bits.authneg && (conn->writesockfd != CURL_SOCKET_BAD)) {
! 483: conn->bits.rewindaftersend = TRUE;
! 484: infof(data, "Rewind stream after send\n");
! 485: }
! 486:
! 487: return CURLE_OK;
! 488: }
! 489:
! 490: if(conn->bits.close)
! 491: /* this is already marked to get closed */
! 492: return CURLE_OK;
! 493:
! 494: infof(data, "NTLM send, close instead of sending %"
! 495: CURL_FORMAT_CURL_OFF_T " bytes\n",
! 496: (curl_off_t)(expectsend - bytessent));
! 497: }
! 498: #endif
! 499: #if defined(USE_SPNEGO)
! 500: /* There is still data left to send */
! 501: if((data->state.authproxy.picked == CURLAUTH_NEGOTIATE) ||
! 502: (data->state.authhost.picked == CURLAUTH_NEGOTIATE)) {
! 503: if(((expectsend - bytessent) < 2000) ||
! 504: (conn->http_negotiate_state != GSS_AUTHNONE) ||
! 505: (conn->proxy_negotiate_state != GSS_AUTHNONE)) {
! 506: /* The NEGOTIATE-negotiation has started *OR*
! 507: there is just a little (<2K) data left to send, keep on sending. */
! 508:
! 509: /* rewind data when completely done sending! */
! 510: if(!conn->bits.authneg && (conn->writesockfd != CURL_SOCKET_BAD)) {
! 511: conn->bits.rewindaftersend = TRUE;
! 512: infof(data, "Rewind stream after send\n");
! 513: }
! 514:
! 515: return CURLE_OK;
! 516: }
! 517:
! 518: if(conn->bits.close)
! 519: /* this is already marked to get closed */
! 520: return CURLE_OK;
! 521:
! 522: infof(data, "NEGOTIATE send, close instead of sending %"
! 523: CURL_FORMAT_CURL_OFF_T " bytes\n",
! 524: (curl_off_t)(expectsend - bytessent));
! 525: }
! 526: #endif
! 527:
! 528: /* This is not NEGOTIATE/NTLM or many bytes left to send: close */
! 529: streamclose(conn, "Mid-auth HTTP and much data left to send");
! 530: data->req.size = 0; /* don't download any more than 0 bytes */
! 531:
! 532: /* There still is data left to send, but this connection is marked for
! 533: closure so we can safely do the rewind right now */
! 534: }
! 535:
! 536: if(bytessent)
! 537: /* we rewind now at once since if we already sent something */
! 538: return Curl_readrewind(conn);
! 539:
! 540: return CURLE_OK;
! 541: }
! 542:
! 543: /*
! 544: * Curl_http_auth_act() gets called when all HTTP headers have been received
! 545: * and it checks what authentication methods that are available and decides
! 546: * which one (if any) to use. It will set 'newurl' if an auth method was
! 547: * picked.
! 548: */
! 549:
! 550: CURLcode Curl_http_auth_act(struct connectdata *conn)
! 551: {
! 552: struct Curl_easy *data = conn->data;
! 553: bool pickhost = FALSE;
! 554: bool pickproxy = FALSE;
! 555: CURLcode result = CURLE_OK;
! 556: unsigned long authmask = ~0ul;
! 557:
! 558: if(!data->set.str[STRING_BEARER])
! 559: authmask &= (unsigned long)~CURLAUTH_BEARER;
! 560:
! 561: if(100 <= data->req.httpcode && 199 >= data->req.httpcode)
! 562: /* this is a transient response code, ignore */
! 563: return CURLE_OK;
! 564:
! 565: if(data->state.authproblem)
! 566: return data->set.http_fail_on_error?CURLE_HTTP_RETURNED_ERROR:CURLE_OK;
! 567:
! 568: if((conn->bits.user_passwd || data->set.str[STRING_BEARER]) &&
! 569: ((data->req.httpcode == 401) ||
! 570: (conn->bits.authneg && data->req.httpcode < 300))) {
! 571: pickhost = pickoneauth(&data->state.authhost, authmask);
! 572: if(!pickhost)
! 573: data->state.authproblem = TRUE;
! 574: if(data->state.authhost.picked == CURLAUTH_NTLM &&
! 575: conn->httpversion > 11) {
! 576: infof(data, "Forcing HTTP/1.1 for NTLM");
! 577: connclose(conn, "Force HTTP/1.1 connection");
! 578: conn->data->set.httpversion = CURL_HTTP_VERSION_1_1;
! 579: }
! 580: }
! 581: if(conn->bits.proxy_user_passwd &&
! 582: ((data->req.httpcode == 407) ||
! 583: (conn->bits.authneg && data->req.httpcode < 300))) {
! 584: pickproxy = pickoneauth(&data->state.authproxy,
! 585: authmask & ~CURLAUTH_BEARER);
! 586: if(!pickproxy)
! 587: data->state.authproblem = TRUE;
! 588: }
! 589:
! 590: if(pickhost || pickproxy) {
! 591: if((data->set.httpreq != HTTPREQ_GET) &&
! 592: (data->set.httpreq != HTTPREQ_HEAD) &&
! 593: !conn->bits.rewindaftersend) {
! 594: result = http_perhapsrewind(conn);
! 595: if(result)
! 596: return result;
! 597: }
! 598: /* In case this is GSS auth, the newurl field is already allocated so
! 599: we must make sure to free it before allocating a new one. As figured
! 600: out in bug #2284386 */
! 601: Curl_safefree(data->req.newurl);
! 602: data->req.newurl = strdup(data->change.url); /* clone URL */
! 603: if(!data->req.newurl)
! 604: return CURLE_OUT_OF_MEMORY;
! 605: }
! 606: else if((data->req.httpcode < 300) &&
! 607: (!data->state.authhost.done) &&
! 608: conn->bits.authneg) {
! 609: /* no (known) authentication available,
! 610: authentication is not "done" yet and
! 611: no authentication seems to be required and
! 612: we didn't try HEAD or GET */
! 613: if((data->set.httpreq != HTTPREQ_GET) &&
! 614: (data->set.httpreq != HTTPREQ_HEAD)) {
! 615: data->req.newurl = strdup(data->change.url); /* clone URL */
! 616: if(!data->req.newurl)
! 617: return CURLE_OUT_OF_MEMORY;
! 618: data->state.authhost.done = TRUE;
! 619: }
! 620: }
! 621: if(http_should_fail(conn)) {
! 622: failf(data, "The requested URL returned error: %d",
! 623: data->req.httpcode);
! 624: result = CURLE_HTTP_RETURNED_ERROR;
! 625: }
! 626:
! 627: return result;
! 628: }
! 629:
! 630: #ifndef CURL_DISABLE_HTTP_AUTH
! 631: /*
! 632: * Output the correct authentication header depending on the auth type
! 633: * and whether or not it is to a proxy.
! 634: */
! 635: static CURLcode
! 636: output_auth_headers(struct connectdata *conn,
! 637: struct auth *authstatus,
! 638: const char *request,
! 639: const char *path,
! 640: bool proxy)
! 641: {
! 642: const char *auth = NULL;
! 643: CURLcode result = CURLE_OK;
! 644: struct Curl_easy *data = conn->data;
! 645:
! 646: #ifdef CURL_DISABLE_CRYPTO_AUTH
! 647: (void)request;
! 648: (void)path;
! 649: #endif
! 650:
! 651: #ifdef USE_SPNEGO
! 652: if(authstatus->picked == CURLAUTH_NEGOTIATE) {
! 653: auth = "Negotiate";
! 654: result = Curl_output_negotiate(conn, proxy);
! 655: if(result)
! 656: return result;
! 657: }
! 658: else
! 659: #endif
! 660: #ifdef USE_NTLM
! 661: if(authstatus->picked == CURLAUTH_NTLM) {
! 662: auth = "NTLM";
! 663: result = Curl_output_ntlm(conn, proxy);
! 664: if(result)
! 665: return result;
! 666: }
! 667: else
! 668: #endif
! 669: #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
! 670: if(authstatus->picked == CURLAUTH_NTLM_WB) {
! 671: auth = "NTLM_WB";
! 672: result = Curl_output_ntlm_wb(conn, proxy);
! 673: if(result)
! 674: return result;
! 675: }
! 676: else
! 677: #endif
! 678: #ifndef CURL_DISABLE_CRYPTO_AUTH
! 679: if(authstatus->picked == CURLAUTH_DIGEST) {
! 680: auth = "Digest";
! 681: result = Curl_output_digest(conn,
! 682: proxy,
! 683: (const unsigned char *)request,
! 684: (const unsigned char *)path);
! 685: if(result)
! 686: return result;
! 687: }
! 688: else
! 689: #endif
! 690: if(authstatus->picked == CURLAUTH_BASIC) {
! 691: /* Basic */
! 692: if((proxy && conn->bits.proxy_user_passwd &&
! 693: !Curl_checkProxyheaders(conn, "Proxy-authorization")) ||
! 694: (!proxy && conn->bits.user_passwd &&
! 695: !Curl_checkheaders(conn, "Authorization"))) {
! 696: auth = "Basic";
! 697: result = http_output_basic(conn, proxy);
! 698: if(result)
! 699: return result;
! 700: }
! 701:
! 702: /* NOTE: this function should set 'done' TRUE, as the other auth
! 703: functions work that way */
! 704: authstatus->done = TRUE;
! 705: }
! 706: if(authstatus->picked == CURLAUTH_BEARER) {
! 707: /* Bearer */
! 708: if((!proxy && data->set.str[STRING_BEARER] &&
! 709: !Curl_checkheaders(conn, "Authorization:"))) {
! 710: auth = "Bearer";
! 711: result = http_output_bearer(conn);
! 712: if(result)
! 713: return result;
! 714: }
! 715:
! 716: /* NOTE: this function should set 'done' TRUE, as the other auth
! 717: functions work that way */
! 718: authstatus->done = TRUE;
! 719: }
! 720:
! 721: if(auth) {
! 722: infof(data, "%s auth using %s with user '%s'\n",
! 723: proxy ? "Proxy" : "Server", auth,
! 724: proxy ? (conn->http_proxy.user ? conn->http_proxy.user : "") :
! 725: (conn->user ? conn->user : ""));
! 726: authstatus->multipass = (!authstatus->done) ? TRUE : FALSE;
! 727: }
! 728: else
! 729: authstatus->multipass = FALSE;
! 730:
! 731: return CURLE_OK;
! 732: }
! 733:
! 734: /**
! 735: * Curl_http_output_auth() setups the authentication headers for the
! 736: * host/proxy and the correct authentication
! 737: * method. conn->data->state.authdone is set to TRUE when authentication is
! 738: * done.
! 739: *
! 740: * @param conn all information about the current connection
! 741: * @param request pointer to the request keyword
! 742: * @param path pointer to the requested path; should include query part
! 743: * @param proxytunnel boolean if this is the request setting up a "proxy
! 744: * tunnel"
! 745: *
! 746: * @returns CURLcode
! 747: */
! 748: CURLcode
! 749: Curl_http_output_auth(struct connectdata *conn,
! 750: const char *request,
! 751: const char *path,
! 752: bool proxytunnel) /* TRUE if this is the request setting
! 753: up the proxy tunnel */
! 754: {
! 755: CURLcode result = CURLE_OK;
! 756: struct Curl_easy *data = conn->data;
! 757: struct auth *authhost;
! 758: struct auth *authproxy;
! 759:
! 760: DEBUGASSERT(data);
! 761:
! 762: authhost = &data->state.authhost;
! 763: authproxy = &data->state.authproxy;
! 764:
! 765: if((conn->bits.httpproxy && conn->bits.proxy_user_passwd) ||
! 766: conn->bits.user_passwd || data->set.str[STRING_BEARER])
! 767: /* continue please */;
! 768: else {
! 769: authhost->done = TRUE;
! 770: authproxy->done = TRUE;
! 771: return CURLE_OK; /* no authentication with no user or password */
! 772: }
! 773:
! 774: if(authhost->want && !authhost->picked)
! 775: /* The app has selected one or more methods, but none has been picked
! 776: so far by a server round-trip. Then we set the picked one to the
! 777: want one, and if this is one single bit it'll be used instantly. */
! 778: authhost->picked = authhost->want;
! 779:
! 780: if(authproxy->want && !authproxy->picked)
! 781: /* The app has selected one or more methods, but none has been picked so
! 782: far by a proxy round-trip. Then we set the picked one to the want one,
! 783: and if this is one single bit it'll be used instantly. */
! 784: authproxy->picked = authproxy->want;
! 785:
! 786: #ifndef CURL_DISABLE_PROXY
! 787: /* Send proxy authentication header if needed */
! 788: if(conn->bits.httpproxy &&
! 789: (conn->bits.tunnel_proxy == (bit)proxytunnel)) {
! 790: result = output_auth_headers(conn, authproxy, request, path, TRUE);
! 791: if(result)
! 792: return result;
! 793: }
! 794: else
! 795: #else
! 796: (void)proxytunnel;
! 797: #endif /* CURL_DISABLE_PROXY */
! 798: /* we have no proxy so let's pretend we're done authenticating
! 799: with it */
! 800: authproxy->done = TRUE;
! 801:
! 802: /* To prevent the user+password to get sent to other than the original
! 803: host due to a location-follow, we do some weirdo checks here */
! 804: if(!data->state.this_is_a_follow ||
! 805: conn->bits.netrc ||
! 806: !data->state.first_host ||
! 807: data->set.allow_auth_to_other_hosts ||
! 808: strcasecompare(data->state.first_host, conn->host.name)) {
! 809: result = output_auth_headers(conn, authhost, request, path, FALSE);
! 810: }
! 811: else
! 812: authhost->done = TRUE;
! 813:
! 814: return result;
! 815: }
! 816:
! 817: #else
! 818: /* when disabled */
! 819: CURLcode
! 820: Curl_http_output_auth(struct connectdata *conn,
! 821: const char *request,
! 822: const char *path,
! 823: bool proxytunnel)
! 824: {
! 825: (void)conn;
! 826: (void)request;
! 827: (void)path;
! 828: (void)proxytunnel;
! 829: return CURLE_OK;
! 830: }
! 831: #endif
! 832:
! 833: /*
! 834: * Curl_http_input_auth() deals with Proxy-Authenticate: and WWW-Authenticate:
! 835: * headers. They are dealt with both in the transfer.c main loop and in the
! 836: * proxy CONNECT loop.
! 837: */
! 838:
! 839: CURLcode Curl_http_input_auth(struct connectdata *conn, bool proxy,
! 840: const char *auth) /* the first non-space */
! 841: {
! 842: /*
! 843: * This resource requires authentication
! 844: */
! 845: struct Curl_easy *data = conn->data;
! 846:
! 847: #ifdef USE_SPNEGO
! 848: curlnegotiate *negstate = proxy ? &conn->proxy_negotiate_state :
! 849: &conn->http_negotiate_state;
! 850: #endif
! 851: unsigned long *availp;
! 852: struct auth *authp;
! 853:
! 854: if(proxy) {
! 855: availp = &data->info.proxyauthavail;
! 856: authp = &data->state.authproxy;
! 857: }
! 858: else {
! 859: availp = &data->info.httpauthavail;
! 860: authp = &data->state.authhost;
! 861: }
! 862:
! 863: /*
! 864: * Here we check if we want the specific single authentication (using ==) and
! 865: * if we do, we initiate usage of it.
! 866: *
! 867: * If the provided authentication is wanted as one out of several accepted
! 868: * types (using &), we OR this authentication type to the authavail
! 869: * variable.
! 870: *
! 871: * Note:
! 872: *
! 873: * ->picked is first set to the 'want' value (one or more bits) before the
! 874: * request is sent, and then it is again set _after_ all response 401/407
! 875: * headers have been received but then only to a single preferred method
! 876: * (bit).
! 877: */
! 878:
! 879: while(*auth) {
! 880: #ifdef USE_SPNEGO
! 881: if(checkprefix("Negotiate", auth)) {
! 882: if((authp->avail & CURLAUTH_NEGOTIATE) ||
! 883: Curl_auth_is_spnego_supported()) {
! 884: *availp |= CURLAUTH_NEGOTIATE;
! 885: authp->avail |= CURLAUTH_NEGOTIATE;
! 886:
! 887: if(authp->picked == CURLAUTH_NEGOTIATE) {
! 888: CURLcode result = Curl_input_negotiate(conn, proxy, auth);
! 889: if(!result) {
! 890: DEBUGASSERT(!data->req.newurl);
! 891: data->req.newurl = strdup(data->change.url);
! 892: if(!data->req.newurl)
! 893: return CURLE_OUT_OF_MEMORY;
! 894: data->state.authproblem = FALSE;
! 895: /* we received a GSS auth token and we dealt with it fine */
! 896: *negstate = GSS_AUTHRECV;
! 897: }
! 898: else
! 899: data->state.authproblem = TRUE;
! 900: }
! 901: }
! 902: }
! 903: else
! 904: #endif
! 905: #ifdef USE_NTLM
! 906: /* NTLM support requires the SSL crypto libs */
! 907: if(checkprefix("NTLM", auth)) {
! 908: if((authp->avail & CURLAUTH_NTLM) ||
! 909: (authp->avail & CURLAUTH_NTLM_WB) ||
! 910: Curl_auth_is_ntlm_supported()) {
! 911: *availp |= CURLAUTH_NTLM;
! 912: authp->avail |= CURLAUTH_NTLM;
! 913:
! 914: if(authp->picked == CURLAUTH_NTLM ||
! 915: authp->picked == CURLAUTH_NTLM_WB) {
! 916: /* NTLM authentication is picked and activated */
! 917: CURLcode result = Curl_input_ntlm(conn, proxy, auth);
! 918: if(!result) {
! 919: data->state.authproblem = FALSE;
! 920: #ifdef NTLM_WB_ENABLED
! 921: if(authp->picked == CURLAUTH_NTLM_WB) {
! 922: *availp &= ~CURLAUTH_NTLM;
! 923: authp->avail &= ~CURLAUTH_NTLM;
! 924: *availp |= CURLAUTH_NTLM_WB;
! 925: authp->avail |= CURLAUTH_NTLM_WB;
! 926:
! 927: result = Curl_input_ntlm_wb(conn, proxy, auth);
! 928: if(result) {
! 929: infof(data, "Authentication problem. Ignoring this.\n");
! 930: data->state.authproblem = TRUE;
! 931: }
! 932: }
! 933: #endif
! 934: }
! 935: else {
! 936: infof(data, "Authentication problem. Ignoring this.\n");
! 937: data->state.authproblem = TRUE;
! 938: }
! 939: }
! 940: }
! 941: }
! 942: else
! 943: #endif
! 944: #ifndef CURL_DISABLE_CRYPTO_AUTH
! 945: if(checkprefix("Digest", auth)) {
! 946: if((authp->avail & CURLAUTH_DIGEST) != 0)
! 947: infof(data, "Ignoring duplicate digest auth header.\n");
! 948: else if(Curl_auth_is_digest_supported()) {
! 949: CURLcode result;
! 950:
! 951: *availp |= CURLAUTH_DIGEST;
! 952: authp->avail |= CURLAUTH_DIGEST;
! 953:
! 954: /* We call this function on input Digest headers even if Digest
! 955: * authentication isn't activated yet, as we need to store the
! 956: * incoming data from this header in case we are going to use
! 957: * Digest */
! 958: result = Curl_input_digest(conn, proxy, auth);
! 959: if(result) {
! 960: infof(data, "Authentication problem. Ignoring this.\n");
! 961: data->state.authproblem = TRUE;
! 962: }
! 963: }
! 964: }
! 965: else
! 966: #endif
! 967: if(checkprefix("Basic", auth)) {
! 968: *availp |= CURLAUTH_BASIC;
! 969: authp->avail |= CURLAUTH_BASIC;
! 970: if(authp->picked == CURLAUTH_BASIC) {
! 971: /* We asked for Basic authentication but got a 40X back
! 972: anyway, which basically means our name+password isn't
! 973: valid. */
! 974: authp->avail = CURLAUTH_NONE;
! 975: infof(data, "Authentication problem. Ignoring this.\n");
! 976: data->state.authproblem = TRUE;
! 977: }
! 978: }
! 979: else
! 980: if(checkprefix("Bearer", auth)) {
! 981: *availp |= CURLAUTH_BEARER;
! 982: authp->avail |= CURLAUTH_BEARER;
! 983: if(authp->picked == CURLAUTH_BEARER) {
! 984: /* We asked for Bearer authentication but got a 40X back
! 985: anyway, which basically means our token isn't valid. */
! 986: authp->avail = CURLAUTH_NONE;
! 987: infof(data, "Authentication problem. Ignoring this.\n");
! 988: data->state.authproblem = TRUE;
! 989: }
! 990: }
! 991:
! 992: /* there may be multiple methods on one line, so keep reading */
! 993: while(*auth && *auth != ',') /* read up to the next comma */
! 994: auth++;
! 995: if(*auth == ',') /* if we're on a comma, skip it */
! 996: auth++;
! 997: while(*auth && ISSPACE(*auth))
! 998: auth++;
! 999: }
! 1000:
! 1001: return CURLE_OK;
! 1002: }
! 1003:
! 1004: /**
! 1005: * http_should_fail() determines whether an HTTP response has gotten us
! 1006: * into an error state or not.
! 1007: *
! 1008: * @param conn all information about the current connection
! 1009: *
! 1010: * @retval 0 communications should continue
! 1011: *
! 1012: * @retval 1 communications should not continue
! 1013: */
! 1014: static int http_should_fail(struct connectdata *conn)
! 1015: {
! 1016: struct Curl_easy *data;
! 1017: int httpcode;
! 1018:
! 1019: DEBUGASSERT(conn);
! 1020: data = conn->data;
! 1021: DEBUGASSERT(data);
! 1022:
! 1023: httpcode = data->req.httpcode;
! 1024:
! 1025: /*
! 1026: ** If we haven't been asked to fail on error,
! 1027: ** don't fail.
! 1028: */
! 1029: if(!data->set.http_fail_on_error)
! 1030: return 0;
! 1031:
! 1032: /*
! 1033: ** Any code < 400 is never terminal.
! 1034: */
! 1035: if(httpcode < 400)
! 1036: return 0;
! 1037:
! 1038: /*
! 1039: ** Any code >= 400 that's not 401 or 407 is always
! 1040: ** a terminal error
! 1041: */
! 1042: if((httpcode != 401) && (httpcode != 407))
! 1043: return 1;
! 1044:
! 1045: /*
! 1046: ** All we have left to deal with is 401 and 407
! 1047: */
! 1048: DEBUGASSERT((httpcode == 401) || (httpcode == 407));
! 1049:
! 1050: /*
! 1051: ** Examine the current authentication state to see if this
! 1052: ** is an error. The idea is for this function to get
! 1053: ** called after processing all the headers in a response
! 1054: ** message. So, if we've been to asked to authenticate a
! 1055: ** particular stage, and we've done it, we're OK. But, if
! 1056: ** we're already completely authenticated, it's not OK to
! 1057: ** get another 401 or 407.
! 1058: **
! 1059: ** It is possible for authentication to go stale such that
! 1060: ** the client needs to reauthenticate. Once that info is
! 1061: ** available, use it here.
! 1062: */
! 1063:
! 1064: /*
! 1065: ** Either we're not authenticating, or we're supposed to
! 1066: ** be authenticating something else. This is an error.
! 1067: */
! 1068: if((httpcode == 401) && !conn->bits.user_passwd)
! 1069: return TRUE;
! 1070: if((httpcode == 407) && !conn->bits.proxy_user_passwd)
! 1071: return TRUE;
! 1072:
! 1073: return data->state.authproblem;
! 1074: }
! 1075:
! 1076: /*
! 1077: * readmoredata() is a "fread() emulation" to provide POST and/or request
! 1078: * data. It is used when a huge POST is to be made and the entire chunk wasn't
! 1079: * sent in the first send(). This function will then be called from the
! 1080: * transfer.c loop when more data is to be sent to the peer.
! 1081: *
! 1082: * Returns the amount of bytes it filled the buffer with.
! 1083: */
! 1084: static size_t readmoredata(char *buffer,
! 1085: size_t size,
! 1086: size_t nitems,
! 1087: void *userp)
! 1088: {
! 1089: struct connectdata *conn = (struct connectdata *)userp;
! 1090: struct HTTP *http = conn->data->req.protop;
! 1091: size_t fullsize = size * nitems;
! 1092:
! 1093: if(!http->postsize)
! 1094: /* nothing to return */
! 1095: return 0;
! 1096:
! 1097: /* make sure that a HTTP request is never sent away chunked! */
! 1098: conn->data->req.forbidchunk = (http->sending == HTTPSEND_REQUEST)?TRUE:FALSE;
! 1099:
! 1100: if(http->postsize <= (curl_off_t)fullsize) {
! 1101: memcpy(buffer, http->postdata, (size_t)http->postsize);
! 1102: fullsize = (size_t)http->postsize;
! 1103:
! 1104: if(http->backup.postsize) {
! 1105: /* move backup data into focus and continue on that */
! 1106: http->postdata = http->backup.postdata;
! 1107: http->postsize = http->backup.postsize;
! 1108: conn->data->state.fread_func = http->backup.fread_func;
! 1109: conn->data->state.in = http->backup.fread_in;
! 1110:
! 1111: http->sending++; /* move one step up */
! 1112:
! 1113: http->backup.postsize = 0;
! 1114: }
! 1115: else
! 1116: http->postsize = 0;
! 1117:
! 1118: return fullsize;
! 1119: }
! 1120:
! 1121: memcpy(buffer, http->postdata, fullsize);
! 1122: http->postdata += fullsize;
! 1123: http->postsize -= fullsize;
! 1124:
! 1125: return fullsize;
! 1126: }
! 1127:
! 1128: /* ------------------------------------------------------------------------- */
! 1129: /* add_buffer functions */
! 1130:
! 1131: /*
! 1132: * Curl_add_buffer_init() sets up and returns a fine buffer struct
! 1133: */
! 1134: Curl_send_buffer *Curl_add_buffer_init(void)
! 1135: {
! 1136: return calloc(1, sizeof(Curl_send_buffer));
! 1137: }
! 1138:
! 1139: /*
! 1140: * Curl_add_buffer_free() frees all associated resources.
! 1141: */
! 1142: void Curl_add_buffer_free(Curl_send_buffer **inp)
! 1143: {
! 1144: Curl_send_buffer *in;
! 1145: if(!inp)
! 1146: return;
! 1147: in = *inp;
! 1148: if(in) { /* deal with NULL input */
! 1149: free(in->buffer);
! 1150: free(in);
! 1151: }
! 1152: *inp = NULL;
! 1153: }
! 1154:
! 1155: /*
! 1156: * Curl_add_buffer_send() sends a header buffer and frees all associated
! 1157: * memory. Body data may be appended to the header data if desired.
! 1158: *
! 1159: * Returns CURLcode
! 1160: */
! 1161: CURLcode Curl_add_buffer_send(Curl_send_buffer **inp,
! 1162: struct connectdata *conn,
! 1163:
! 1164: /* add the number of sent bytes to this
! 1165: counter */
! 1166: curl_off_t *bytes_written,
! 1167:
! 1168: /* how much of the buffer contains body data */
! 1169: size_t included_body_bytes,
! 1170: int socketindex)
! 1171: {
! 1172: ssize_t amount;
! 1173: CURLcode result;
! 1174: char *ptr;
! 1175: size_t size;
! 1176: struct Curl_easy *data = conn->data;
! 1177: struct HTTP *http = data->req.protop;
! 1178: size_t sendsize;
! 1179: curl_socket_t sockfd;
! 1180: size_t headersize;
! 1181: Curl_send_buffer *in = *inp;
! 1182:
! 1183: DEBUGASSERT(socketindex <= SECONDARYSOCKET);
! 1184:
! 1185: sockfd = conn->sock[socketindex];
! 1186:
! 1187: /* The looping below is required since we use non-blocking sockets, but due
! 1188: to the circumstances we will just loop and try again and again etc */
! 1189:
! 1190: ptr = in->buffer;
! 1191: size = in->size_used;
! 1192:
! 1193: headersize = size - included_body_bytes; /* the initial part that isn't body
! 1194: is header */
! 1195:
! 1196: DEBUGASSERT(size > included_body_bytes);
! 1197:
! 1198: result = Curl_convert_to_network(data, ptr, headersize);
! 1199: /* Curl_convert_to_network calls failf if unsuccessful */
! 1200: if(result) {
! 1201: /* conversion failed, free memory and return to the caller */
! 1202: Curl_add_buffer_free(inp);
! 1203: return result;
! 1204: }
! 1205:
! 1206: if((conn->handler->flags & PROTOPT_SSL ||
! 1207: conn->http_proxy.proxytype == CURLPROXY_HTTPS)
! 1208: && conn->httpversion != 20) {
! 1209: /* We never send more than CURL_MAX_WRITE_SIZE bytes in one single chunk
! 1210: when we speak HTTPS, as if only a fraction of it is sent now, this data
! 1211: needs to fit into the normal read-callback buffer later on and that
! 1212: buffer is using this size.
! 1213: */
! 1214:
! 1215: sendsize = CURLMIN(size, CURL_MAX_WRITE_SIZE);
! 1216:
! 1217: /* OpenSSL is very picky and we must send the SAME buffer pointer to the
! 1218: library when we attempt to re-send this buffer. Sending the same data
! 1219: is not enough, we must use the exact same address. For this reason, we
! 1220: must copy the data to the uploadbuffer first, since that is the buffer
! 1221: we will be using if this send is retried later.
! 1222: */
! 1223: result = Curl_get_upload_buffer(data);
! 1224: if(result) {
! 1225: /* malloc failed, free memory and return to the caller */
! 1226: Curl_add_buffer_free(&in);
! 1227: return result;
! 1228: }
! 1229: memcpy(data->state.ulbuf, ptr, sendsize);
! 1230: ptr = data->state.ulbuf;
! 1231: }
! 1232: else {
! 1233: #ifdef CURLDEBUG
! 1234: /* Allow debug builds override this logic to force short initial sends */
! 1235: char *p = getenv("CURL_SMALLREQSEND");
! 1236: if(p) {
! 1237: size_t altsize = (size_t)strtoul(p, NULL, 10);
! 1238: if(altsize)
! 1239: sendsize = CURLMIN(size, altsize);
! 1240: else
! 1241: sendsize = size;
! 1242: }
! 1243: else
! 1244: #endif
! 1245: sendsize = size;
! 1246: }
! 1247:
! 1248: result = Curl_write(conn, sockfd, ptr, sendsize, &amount);
! 1249:
! 1250: if(!result) {
! 1251: /*
! 1252: * Note that we may not send the entire chunk at once, and we have a set
! 1253: * number of data bytes at the end of the big buffer (out of which we may
! 1254: * only send away a part).
! 1255: */
! 1256: /* how much of the header that was sent */
! 1257: size_t headlen = (size_t)amount>headersize ? headersize : (size_t)amount;
! 1258: size_t bodylen = amount - headlen;
! 1259:
! 1260: if(data->set.verbose) {
! 1261: /* this data _may_ contain binary stuff */
! 1262: Curl_debug(data, CURLINFO_HEADER_OUT, ptr, headlen);
! 1263: if(bodylen) {
! 1264: /* there was body data sent beyond the initial header part, pass that
! 1265: on to the debug callback too */
! 1266: Curl_debug(data, CURLINFO_DATA_OUT,
! 1267: ptr + headlen, bodylen);
! 1268: }
! 1269: }
! 1270:
! 1271: /* 'amount' can never be a very large value here so typecasting it so a
! 1272: signed 31 bit value should not cause problems even if ssize_t is
! 1273: 64bit */
! 1274: *bytes_written += (long)amount;
! 1275:
! 1276: if(http) {
! 1277: /* if we sent a piece of the body here, up the byte counter for it
! 1278: accordingly */
! 1279: data->req.writebytecount += bodylen;
! 1280: Curl_pgrsSetUploadCounter(data, data->req.writebytecount);
! 1281:
! 1282: if((size_t)amount != size) {
! 1283: /* The whole request could not be sent in one system call. We must
! 1284: queue it up and send it later when we get the chance. We must not
! 1285: loop here and wait until it might work again. */
! 1286:
! 1287: size -= amount;
! 1288:
! 1289: ptr = in->buffer + amount;
! 1290:
! 1291: /* backup the currently set pointers */
! 1292: http->backup.fread_func = data->state.fread_func;
! 1293: http->backup.fread_in = data->state.in;
! 1294: http->backup.postdata = http->postdata;
! 1295: http->backup.postsize = http->postsize;
! 1296:
! 1297: /* set the new pointers for the request-sending */
! 1298: data->state.fread_func = (curl_read_callback)readmoredata;
! 1299: data->state.in = (void *)conn;
! 1300: http->postdata = ptr;
! 1301: http->postsize = (curl_off_t)size;
! 1302:
! 1303: http->send_buffer = in;
! 1304: http->sending = HTTPSEND_REQUEST;
! 1305:
! 1306: return CURLE_OK;
! 1307: }
! 1308: http->sending = HTTPSEND_BODY;
! 1309: /* the full buffer was sent, clean up and return */
! 1310: }
! 1311: else {
! 1312: if((size_t)amount != size)
! 1313: /* We have no continue-send mechanism now, fail. This can only happen
! 1314: when this function is used from the CONNECT sending function. We
! 1315: currently (stupidly) assume that the whole request is always sent
! 1316: away in the first single chunk.
! 1317:
! 1318: This needs FIXing.
! 1319: */
! 1320: return CURLE_SEND_ERROR;
! 1321: }
! 1322: }
! 1323: Curl_add_buffer_free(&in);
! 1324:
! 1325: return result;
! 1326: }
! 1327:
! 1328:
! 1329: /*
! 1330: * add_bufferf() add the formatted input to the buffer.
! 1331: */
! 1332: CURLcode Curl_add_bufferf(Curl_send_buffer **inp, const char *fmt, ...)
! 1333: {
! 1334: char *s;
! 1335: va_list ap;
! 1336: va_start(ap, fmt);
! 1337: s = vaprintf(fmt, ap); /* this allocs a new string to append */
! 1338: va_end(ap);
! 1339:
! 1340: if(s) {
! 1341: CURLcode result = Curl_add_buffer(inp, s, strlen(s));
! 1342: free(s);
! 1343: return result;
! 1344: }
! 1345: /* If we failed, we cleanup the whole buffer and return error */
! 1346: Curl_add_buffer_free(inp);
! 1347: return CURLE_OUT_OF_MEMORY;
! 1348: }
! 1349:
! 1350: /*
! 1351: * Curl_add_buffer() appends a memory chunk to the existing buffer
! 1352: */
! 1353: CURLcode Curl_add_buffer(Curl_send_buffer **inp, const void *inptr,
! 1354: size_t size)
! 1355: {
! 1356: char *new_rb;
! 1357: Curl_send_buffer *in = *inp;
! 1358:
! 1359: if(~size < in->size_used) {
! 1360: /* If resulting used size of send buffer would wrap size_t, cleanup
! 1361: the whole buffer and return error. Otherwise the required buffer
! 1362: size will fit into a single allocatable memory chunk */
! 1363: Curl_add_buffer_free(inp);
! 1364: return CURLE_OUT_OF_MEMORY;
! 1365: }
! 1366:
! 1367: if(!in->buffer ||
! 1368: ((in->size_used + size) > (in->size_max - 1))) {
! 1369: /* If current buffer size isn't enough to hold the result, use a
! 1370: buffer size that doubles the required size. If this new size
! 1371: would wrap size_t, then just use the largest possible one */
! 1372: size_t new_size;
! 1373:
! 1374: if((size > (size_t)-1 / 2) || (in->size_used > (size_t)-1 / 2) ||
! 1375: (~(size * 2) < (in->size_used * 2)))
! 1376: new_size = (size_t)-1;
! 1377: else
! 1378: new_size = (in->size_used + size) * 2;
! 1379:
! 1380: if(in->buffer)
! 1381: /* we have a buffer, enlarge the existing one */
! 1382: new_rb = Curl_saferealloc(in->buffer, new_size);
! 1383: else
! 1384: /* create a new buffer */
! 1385: new_rb = malloc(new_size);
! 1386:
! 1387: if(!new_rb) {
! 1388: /* If we failed, we cleanup the whole buffer and return error */
! 1389: free(in);
! 1390: *inp = NULL;
! 1391: return CURLE_OUT_OF_MEMORY;
! 1392: }
! 1393:
! 1394: in->buffer = new_rb;
! 1395: in->size_max = new_size;
! 1396: }
! 1397: memcpy(&in->buffer[in->size_used], inptr, size);
! 1398:
! 1399: in->size_used += size;
! 1400:
! 1401: return CURLE_OK;
! 1402: }
! 1403:
! 1404: /* end of the add_buffer functions */
! 1405: /* ------------------------------------------------------------------------- */
! 1406:
! 1407:
! 1408:
! 1409: /*
! 1410: * Curl_compareheader()
! 1411: *
! 1412: * Returns TRUE if 'headerline' contains the 'header' with given 'content'.
! 1413: * Pass headers WITH the colon.
! 1414: */
! 1415: bool
! 1416: Curl_compareheader(const char *headerline, /* line to check */
! 1417: const char *header, /* header keyword _with_ colon */
! 1418: const char *content) /* content string to find */
! 1419: {
! 1420: /* RFC2616, section 4.2 says: "Each header field consists of a name followed
! 1421: * by a colon (":") and the field value. Field names are case-insensitive.
! 1422: * The field value MAY be preceded by any amount of LWS, though a single SP
! 1423: * is preferred." */
! 1424:
! 1425: size_t hlen = strlen(header);
! 1426: size_t clen;
! 1427: size_t len;
! 1428: const char *start;
! 1429: const char *end;
! 1430:
! 1431: if(!strncasecompare(headerline, header, hlen))
! 1432: return FALSE; /* doesn't start with header */
! 1433:
! 1434: /* pass the header */
! 1435: start = &headerline[hlen];
! 1436:
! 1437: /* pass all white spaces */
! 1438: while(*start && ISSPACE(*start))
! 1439: start++;
! 1440:
! 1441: /* find the end of the header line */
! 1442: end = strchr(start, '\r'); /* lines end with CRLF */
! 1443: if(!end) {
! 1444: /* in case there's a non-standard compliant line here */
! 1445: end = strchr(start, '\n');
! 1446:
! 1447: if(!end)
! 1448: /* hm, there's no line ending here, use the zero byte! */
! 1449: end = strchr(start, '\0');
! 1450: }
! 1451:
! 1452: len = end-start; /* length of the content part of the input line */
! 1453: clen = strlen(content); /* length of the word to find */
! 1454:
! 1455: /* find the content string in the rest of the line */
! 1456: for(; len >= clen; len--, start++) {
! 1457: if(strncasecompare(start, content, clen))
! 1458: return TRUE; /* match! */
! 1459: }
! 1460:
! 1461: return FALSE; /* no match */
! 1462: }
! 1463:
! 1464: /*
! 1465: * Curl_http_connect() performs HTTP stuff to do at connect-time, called from
! 1466: * the generic Curl_connect().
! 1467: */
! 1468: CURLcode Curl_http_connect(struct connectdata *conn, bool *done)
! 1469: {
! 1470: CURLcode result;
! 1471:
! 1472: /* We default to persistent connections. We set this already in this connect
! 1473: function to make the re-use checks properly be able to check this bit. */
! 1474: connkeep(conn, "HTTP default");
! 1475:
! 1476: /* the CONNECT procedure might not have been completed */
! 1477: result = Curl_proxy_connect(conn, FIRSTSOCKET);
! 1478: if(result)
! 1479: return result;
! 1480:
! 1481: if(conn->bits.proxy_connect_closed)
! 1482: /* this is not an error, just part of the connection negotiation */
! 1483: return CURLE_OK;
! 1484:
! 1485: if(CONNECT_FIRSTSOCKET_PROXY_SSL())
! 1486: return CURLE_OK; /* wait for HTTPS proxy SSL initialization to complete */
! 1487:
! 1488: if(Curl_connect_ongoing(conn))
! 1489: /* nothing else to do except wait right now - we're not done here. */
! 1490: return CURLE_OK;
! 1491:
! 1492: #ifndef CURL_DISABLE_PROXY
! 1493: if(conn->data->set.haproxyprotocol) {
! 1494: /* add HAProxy PROXY protocol header */
! 1495: result = add_haproxy_protocol_header(conn);
! 1496: if(result)
! 1497: return result;
! 1498: }
! 1499: #endif
! 1500:
! 1501: if(conn->given->protocol & CURLPROTO_HTTPS) {
! 1502: /* perform SSL initialization */
! 1503: result = https_connecting(conn, done);
! 1504: if(result)
! 1505: return result;
! 1506: }
! 1507: else
! 1508: *done = TRUE;
! 1509:
! 1510: return CURLE_OK;
! 1511: }
! 1512:
! 1513: /* this returns the socket to wait for in the DO and DOING state for the multi
! 1514: interface and then we're always _sending_ a request and thus we wait for
! 1515: the single socket to become writable only */
! 1516: static int http_getsock_do(struct connectdata *conn,
! 1517: curl_socket_t *socks)
! 1518: {
! 1519: /* write mode */
! 1520: socks[0] = conn->sock[FIRSTSOCKET];
! 1521: return GETSOCK_WRITESOCK(0);
! 1522: }
! 1523:
! 1524: #ifndef CURL_DISABLE_PROXY
! 1525: static CURLcode add_haproxy_protocol_header(struct connectdata *conn)
! 1526: {
! 1527: char proxy_header[128];
! 1528: Curl_send_buffer *req_buffer;
! 1529: CURLcode result;
! 1530: char tcp_version[5];
! 1531:
! 1532: /* Emit the correct prefix for IPv6 */
! 1533: if(conn->bits.ipv6) {
! 1534: strcpy(tcp_version, "TCP6");
! 1535: }
! 1536: else {
! 1537: strcpy(tcp_version, "TCP4");
! 1538: }
! 1539:
! 1540: msnprintf(proxy_header,
! 1541: sizeof(proxy_header),
! 1542: "PROXY %s %s %s %li %li\r\n",
! 1543: tcp_version,
! 1544: conn->data->info.conn_local_ip,
! 1545: conn->data->info.conn_primary_ip,
! 1546: conn->data->info.conn_local_port,
! 1547: conn->data->info.conn_primary_port);
! 1548:
! 1549: req_buffer = Curl_add_buffer_init();
! 1550: if(!req_buffer)
! 1551: return CURLE_OUT_OF_MEMORY;
! 1552:
! 1553: result = Curl_add_bufferf(&req_buffer, proxy_header);
! 1554: if(result)
! 1555: return result;
! 1556:
! 1557: result = Curl_add_buffer_send(&req_buffer,
! 1558: conn,
! 1559: &conn->data->info.request_size,
! 1560: 0,
! 1561: FIRSTSOCKET);
! 1562:
! 1563: return result;
! 1564: }
! 1565: #endif
! 1566:
! 1567: #ifdef USE_SSL
! 1568: static CURLcode https_connecting(struct connectdata *conn, bool *done)
! 1569: {
! 1570: CURLcode result;
! 1571: DEBUGASSERT((conn) && (conn->handler->flags & PROTOPT_SSL));
! 1572:
! 1573: #ifdef ENABLE_QUIC
! 1574: if(conn->transport == TRNSPRT_QUIC) {
! 1575: *done = TRUE;
! 1576: return CURLE_OK;
! 1577: }
! 1578: #endif
! 1579:
! 1580: /* perform SSL initialization for this socket */
! 1581: result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, done);
! 1582: if(result)
! 1583: connclose(conn, "Failed HTTPS connection");
! 1584:
! 1585: return result;
! 1586: }
! 1587:
! 1588: static int https_getsock(struct connectdata *conn,
! 1589: curl_socket_t *socks)
! 1590: {
! 1591: if(conn->handler->flags & PROTOPT_SSL)
! 1592: return Curl_ssl_getsock(conn, socks);
! 1593: return GETSOCK_BLANK;
! 1594: }
! 1595: #endif /* USE_SSL */
! 1596:
! 1597: /*
! 1598: * Curl_http_done() gets called after a single HTTP request has been
! 1599: * performed.
! 1600: */
! 1601:
! 1602: CURLcode Curl_http_done(struct connectdata *conn,
! 1603: CURLcode status, bool premature)
! 1604: {
! 1605: struct Curl_easy *data = conn->data;
! 1606: struct HTTP *http = data->req.protop;
! 1607:
! 1608: /* Clear multipass flag. If authentication isn't done yet, then it will get
! 1609: * a chance to be set back to true when we output the next auth header */
! 1610: data->state.authhost.multipass = FALSE;
! 1611: data->state.authproxy.multipass = FALSE;
! 1612:
! 1613: Curl_unencode_cleanup(conn);
! 1614:
! 1615: /* set the proper values (possibly modified on POST) */
! 1616: conn->seek_func = data->set.seek_func; /* restore */
! 1617: conn->seek_client = data->set.seek_client; /* restore */
! 1618:
! 1619: if(!http)
! 1620: return CURLE_OK;
! 1621:
! 1622: if(http->send_buffer) {
! 1623: Curl_add_buffer_free(&http->send_buffer);
! 1624: }
! 1625:
! 1626: Curl_http2_done(data, premature);
! 1627: Curl_quic_done(data, premature);
! 1628:
! 1629: Curl_mime_cleanpart(&http->form);
! 1630:
! 1631: if(status)
! 1632: return status;
! 1633:
! 1634: if(!premature && /* this check is pointless when DONE is called before the
! 1635: entire operation is complete */
! 1636: !conn->bits.retry &&
! 1637: !data->set.connect_only &&
! 1638: (data->req.bytecount +
! 1639: data->req.headerbytecount -
! 1640: data->req.deductheadercount) <= 0) {
! 1641: /* If this connection isn't simply closed to be retried, AND nothing was
! 1642: read from the HTTP server (that counts), this can't be right so we
! 1643: return an error here */
! 1644: failf(data, "Empty reply from server");
! 1645: return CURLE_GOT_NOTHING;
! 1646: }
! 1647:
! 1648: return CURLE_OK;
! 1649: }
! 1650:
! 1651: /*
! 1652: * Determine if we should use HTTP 1.1 (OR BETTER) for this request. Reasons
! 1653: * to avoid it include:
! 1654: *
! 1655: * - if the user specifically requested HTTP 1.0
! 1656: * - if the server we are connected to only supports 1.0
! 1657: * - if any server previously contacted to handle this request only supports
! 1658: * 1.0.
! 1659: */
! 1660: static bool use_http_1_1plus(const struct Curl_easy *data,
! 1661: const struct connectdata *conn)
! 1662: {
! 1663: if((data->state.httpversion == 10) || (conn->httpversion == 10))
! 1664: return FALSE;
! 1665: if((data->set.httpversion == CURL_HTTP_VERSION_1_0) &&
! 1666: (conn->httpversion <= 10))
! 1667: return FALSE;
! 1668: return ((data->set.httpversion == CURL_HTTP_VERSION_NONE) ||
! 1669: (data->set.httpversion >= CURL_HTTP_VERSION_1_1));
! 1670: }
! 1671:
! 1672: static const char *get_http_string(const struct Curl_easy *data,
! 1673: const struct connectdata *conn)
! 1674: {
! 1675: #ifdef ENABLE_QUIC
! 1676: if((data->set.httpversion == CURL_HTTP_VERSION_3) ||
! 1677: (conn->httpversion == 30))
! 1678: return "3";
! 1679: #endif
! 1680:
! 1681: #ifdef USE_NGHTTP2
! 1682: if(conn->proto.httpc.h2)
! 1683: return "2";
! 1684: #endif
! 1685:
! 1686: if(use_http_1_1plus(data, conn))
! 1687: return "1.1";
! 1688:
! 1689: return "1.0";
! 1690: }
! 1691:
! 1692: /* check and possibly add an Expect: header */
! 1693: static CURLcode expect100(struct Curl_easy *data,
! 1694: struct connectdata *conn,
! 1695: Curl_send_buffer *req_buffer)
! 1696: {
! 1697: CURLcode result = CURLE_OK;
! 1698: data->state.expect100header = FALSE; /* default to false unless it is set
! 1699: to TRUE below */
! 1700: if(!data->state.disableexpect && use_http_1_1plus(data, conn) &&
! 1701: (conn->httpversion < 20)) {
! 1702: /* if not doing HTTP 1.0 or version 2, or disabled explicitly, we add an
! 1703: Expect: 100-continue to the headers which actually speeds up post
! 1704: operations (as there is one packet coming back from the web server) */
! 1705: const char *ptr = Curl_checkheaders(conn, "Expect");
! 1706: if(ptr) {
! 1707: data->state.expect100header =
! 1708: Curl_compareheader(ptr, "Expect:", "100-continue");
! 1709: }
! 1710: else {
! 1711: result = Curl_add_bufferf(&req_buffer,
! 1712: "Expect: 100-continue\r\n");
! 1713: if(!result)
! 1714: data->state.expect100header = TRUE;
! 1715: }
! 1716: }
! 1717:
! 1718: return result;
! 1719: }
! 1720:
! 1721: enum proxy_use {
! 1722: HEADER_SERVER, /* direct to server */
! 1723: HEADER_PROXY, /* regular request to proxy */
! 1724: HEADER_CONNECT /* sending CONNECT to a proxy */
! 1725: };
! 1726:
! 1727: /* used to compile the provided trailers into one buffer
! 1728: will return an error code if one of the headers is
! 1729: not formatted correctly */
! 1730: CURLcode Curl_http_compile_trailers(struct curl_slist *trailers,
! 1731: Curl_send_buffer **buffer,
! 1732: struct Curl_easy *handle)
! 1733: {
! 1734: char *ptr = NULL;
! 1735: CURLcode result = CURLE_OK;
! 1736: const char *endofline_native = NULL;
! 1737: const char *endofline_network = NULL;
! 1738:
! 1739: if(
! 1740: #ifdef CURL_DO_LINEEND_CONV
! 1741: (handle->set.prefer_ascii) ||
! 1742: #endif
! 1743: (handle->set.crlf)) {
! 1744: /* \n will become \r\n later on */
! 1745: endofline_native = "\n";
! 1746: endofline_network = "\x0a";
! 1747: }
! 1748: else {
! 1749: endofline_native = "\r\n";
! 1750: endofline_network = "\x0d\x0a";
! 1751: }
! 1752:
! 1753: while(trailers) {
! 1754: /* only add correctly formatted trailers */
! 1755: ptr = strchr(trailers->data, ':');
! 1756: if(ptr && *(ptr + 1) == ' ') {
! 1757: result = Curl_add_bufferf(buffer, "%s%s", trailers->data,
! 1758: endofline_native);
! 1759: if(result)
! 1760: return result;
! 1761: }
! 1762: else
! 1763: infof(handle, "Malformatted trailing header ! Skipping trailer.");
! 1764: trailers = trailers->next;
! 1765: }
! 1766: result = Curl_add_buffer(buffer, endofline_network,
! 1767: strlen(endofline_network));
! 1768: return result;
! 1769: }
! 1770:
! 1771: CURLcode Curl_add_custom_headers(struct connectdata *conn,
! 1772: bool is_connect,
! 1773: Curl_send_buffer *req_buffer)
! 1774: {
! 1775: char *ptr;
! 1776: struct curl_slist *h[2];
! 1777: struct curl_slist *headers;
! 1778: int numlists = 1; /* by default */
! 1779: struct Curl_easy *data = conn->data;
! 1780: int i;
! 1781:
! 1782: enum proxy_use proxy;
! 1783:
! 1784: if(is_connect)
! 1785: proxy = HEADER_CONNECT;
! 1786: else
! 1787: proxy = conn->bits.httpproxy && !conn->bits.tunnel_proxy?
! 1788: HEADER_PROXY:HEADER_SERVER;
! 1789:
! 1790: switch(proxy) {
! 1791: case HEADER_SERVER:
! 1792: h[0] = data->set.headers;
! 1793: break;
! 1794: case HEADER_PROXY:
! 1795: h[0] = data->set.headers;
! 1796: if(data->set.sep_headers) {
! 1797: h[1] = data->set.proxyheaders;
! 1798: numlists++;
! 1799: }
! 1800: break;
! 1801: case HEADER_CONNECT:
! 1802: if(data->set.sep_headers)
! 1803: h[0] = data->set.proxyheaders;
! 1804: else
! 1805: h[0] = data->set.headers;
! 1806: break;
! 1807: }
! 1808:
! 1809: /* loop through one or two lists */
! 1810: for(i = 0; i < numlists; i++) {
! 1811: headers = h[i];
! 1812:
! 1813: while(headers) {
! 1814: char *semicolonp = NULL;
! 1815: ptr = strchr(headers->data, ':');
! 1816: if(!ptr) {
! 1817: char *optr;
! 1818: /* no colon, semicolon? */
! 1819: ptr = strchr(headers->data, ';');
! 1820: if(ptr) {
! 1821: optr = ptr;
! 1822: ptr++; /* pass the semicolon */
! 1823: while(*ptr && ISSPACE(*ptr))
! 1824: ptr++;
! 1825:
! 1826: if(*ptr) {
! 1827: /* this may be used for something else in the future */
! 1828: optr = NULL;
! 1829: }
! 1830: else {
! 1831: if(*(--ptr) == ';') {
! 1832: /* copy the source */
! 1833: semicolonp = strdup(headers->data);
! 1834: if(!semicolonp) {
! 1835: Curl_add_buffer_free(&req_buffer);
! 1836: return CURLE_OUT_OF_MEMORY;
! 1837: }
! 1838: /* put a colon where the semicolon is */
! 1839: semicolonp[ptr - headers->data] = ':';
! 1840: /* point at the colon */
! 1841: optr = &semicolonp [ptr - headers->data];
! 1842: }
! 1843: }
! 1844: ptr = optr;
! 1845: }
! 1846: }
! 1847: if(ptr) {
! 1848: /* we require a colon for this to be a true header */
! 1849:
! 1850: ptr++; /* pass the colon */
! 1851: while(*ptr && ISSPACE(*ptr))
! 1852: ptr++;
! 1853:
! 1854: if(*ptr || semicolonp) {
! 1855: /* only send this if the contents was non-blank or done special */
! 1856: CURLcode result = CURLE_OK;
! 1857: char *compare = semicolonp ? semicolonp : headers->data;
! 1858:
! 1859: if(conn->allocptr.host &&
! 1860: /* a Host: header was sent already, don't pass on any custom Host:
! 1861: header as that will produce *two* in the same request! */
! 1862: checkprefix("Host:", compare))
! 1863: ;
! 1864: else if(data->set.httpreq == HTTPREQ_POST_FORM &&
! 1865: /* this header (extended by formdata.c) is sent later */
! 1866: checkprefix("Content-Type:", compare))
! 1867: ;
! 1868: else if(data->set.httpreq == HTTPREQ_POST_MIME &&
! 1869: /* this header is sent later */
! 1870: checkprefix("Content-Type:", compare))
! 1871: ;
! 1872: else if(conn->bits.authneg &&
! 1873: /* while doing auth neg, don't allow the custom length since
! 1874: we will force length zero then */
! 1875: checkprefix("Content-Length:", compare))
! 1876: ;
! 1877: else if(conn->allocptr.te &&
! 1878: /* when asking for Transfer-Encoding, don't pass on a custom
! 1879: Connection: */
! 1880: checkprefix("Connection:", compare))
! 1881: ;
! 1882: else if((conn->httpversion >= 20) &&
! 1883: checkprefix("Transfer-Encoding:", compare))
! 1884: /* HTTP/2 doesn't support chunked requests */
! 1885: ;
! 1886: else if((checkprefix("Authorization:", compare) ||
! 1887: checkprefix("Cookie:", compare)) &&
! 1888: /* be careful of sending this potentially sensitive header to
! 1889: other hosts */
! 1890: (data->state.this_is_a_follow &&
! 1891: data->state.first_host &&
! 1892: !data->set.allow_auth_to_other_hosts &&
! 1893: !strcasecompare(data->state.first_host, conn->host.name)))
! 1894: ;
! 1895: else {
! 1896: result = Curl_add_bufferf(&req_buffer, "%s\r\n", compare);
! 1897: }
! 1898: if(semicolonp)
! 1899: free(semicolonp);
! 1900: if(result)
! 1901: return result;
! 1902: }
! 1903: }
! 1904: headers = headers->next;
! 1905: }
! 1906: }
! 1907:
! 1908: return CURLE_OK;
! 1909: }
! 1910:
! 1911: #ifndef CURL_DISABLE_PARSEDATE
! 1912: CURLcode Curl_add_timecondition(const struct connectdata *conn,
! 1913: Curl_send_buffer *req_buffer)
! 1914: {
! 1915: struct Curl_easy *data = conn->data;
! 1916: const struct tm *tm;
! 1917: struct tm keeptime;
! 1918: CURLcode result;
! 1919: char datestr[80];
! 1920: const char *condp;
! 1921:
! 1922: if(data->set.timecondition == CURL_TIMECOND_NONE)
! 1923: /* no condition was asked for */
! 1924: return CURLE_OK;
! 1925:
! 1926: result = Curl_gmtime(data->set.timevalue, &keeptime);
! 1927: if(result) {
! 1928: failf(data, "Invalid TIMEVALUE");
! 1929: return result;
! 1930: }
! 1931: tm = &keeptime;
! 1932:
! 1933: switch(data->set.timecondition) {
! 1934: default:
! 1935: return CURLE_BAD_FUNCTION_ARGUMENT;
! 1936:
! 1937: case CURL_TIMECOND_IFMODSINCE:
! 1938: condp = "If-Modified-Since";
! 1939: break;
! 1940: case CURL_TIMECOND_IFUNMODSINCE:
! 1941: condp = "If-Unmodified-Since";
! 1942: break;
! 1943: case CURL_TIMECOND_LASTMOD:
! 1944: condp = "Last-Modified";
! 1945: break;
! 1946: }
! 1947:
! 1948: if(Curl_checkheaders(conn, condp)) {
! 1949: /* A custom header was specified; it will be sent instead. */
! 1950: return CURLE_OK;
! 1951: }
! 1952:
! 1953: /* The If-Modified-Since header family should have their times set in
! 1954: * GMT as RFC2616 defines: "All HTTP date/time stamps MUST be
! 1955: * represented in Greenwich Mean Time (GMT), without exception. For the
! 1956: * purposes of HTTP, GMT is exactly equal to UTC (Coordinated Universal
! 1957: * Time)." (see page 20 of RFC2616).
! 1958: */
! 1959:
! 1960: /* format: "Tue, 15 Nov 1994 12:45:26 GMT" */
! 1961: msnprintf(datestr, sizeof(datestr),
! 1962: "%s: %s, %02d %s %4d %02d:%02d:%02d GMT\r\n",
! 1963: condp,
! 1964: Curl_wkday[tm->tm_wday?tm->tm_wday-1:6],
! 1965: tm->tm_mday,
! 1966: Curl_month[tm->tm_mon],
! 1967: tm->tm_year + 1900,
! 1968: tm->tm_hour,
! 1969: tm->tm_min,
! 1970: tm->tm_sec);
! 1971:
! 1972: result = Curl_add_buffer(&req_buffer, datestr, strlen(datestr));
! 1973:
! 1974: return result;
! 1975: }
! 1976: #else
! 1977: /* disabled */
! 1978: CURLcode Curl_add_timecondition(const struct connectdata *conn,
! 1979: Curl_send_buffer *req_buffer)
! 1980: {
! 1981: (void)conn;
! 1982: (void)req_buffer;
! 1983: return CURLE_OK;
! 1984: }
! 1985: #endif
! 1986:
! 1987: /*
! 1988: * Curl_http() gets called from the generic multi_do() function when a HTTP
! 1989: * request is to be performed. This creates and sends a properly constructed
! 1990: * HTTP request.
! 1991: */
! 1992: CURLcode Curl_http(struct connectdata *conn, bool *done)
! 1993: {
! 1994: struct Curl_easy *data = conn->data;
! 1995: CURLcode result = CURLE_OK;
! 1996: struct HTTP *http;
! 1997: const char *path = data->state.up.path;
! 1998: const char *query = data->state.up.query;
! 1999: bool paste_ftp_userpwd = FALSE;
! 2000: char ftp_typecode[sizeof("/;type=?")] = "";
! 2001: const char *host = conn->host.name;
! 2002: const char *te = ""; /* transfer-encoding */
! 2003: const char *ptr;
! 2004: const char *request;
! 2005: Curl_HttpReq httpreq = data->set.httpreq;
! 2006: #if !defined(CURL_DISABLE_COOKIES)
! 2007: char *addcookies = NULL;
! 2008: #endif
! 2009: curl_off_t included_body = 0;
! 2010: const char *httpstring;
! 2011: Curl_send_buffer *req_buffer;
! 2012: curl_off_t postsize = 0; /* curl_off_t to handle large file sizes */
! 2013: char *altused = NULL;
! 2014:
! 2015: /* Always consider the DO phase done after this function call, even if there
! 2016: may be parts of the request that is not yet sent, since we can deal with
! 2017: the rest of the request in the PERFORM phase. */
! 2018: *done = TRUE;
! 2019:
! 2020: if(conn->transport != TRNSPRT_QUIC) {
! 2021: if(conn->httpversion < 20) { /* unless the connection is re-used and
! 2022: already http2 */
! 2023: switch(conn->negnpn) {
! 2024: case CURL_HTTP_VERSION_2:
! 2025: conn->httpversion = 20; /* we know we're on HTTP/2 now */
! 2026:
! 2027: result = Curl_http2_switched(conn, NULL, 0);
! 2028: if(result)
! 2029: return result;
! 2030: break;
! 2031: case CURL_HTTP_VERSION_1_1:
! 2032: /* continue with HTTP/1.1 when explicitly requested */
! 2033: break;
! 2034: default:
! 2035: /* Check if user wants to use HTTP/2 with clear TCP*/
! 2036: #ifdef USE_NGHTTP2
! 2037: if(conn->data->set.httpversion ==
! 2038: CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE) {
! 2039: if(conn->bits.httpproxy && !conn->bits.tunnel_proxy) {
! 2040: /* We don't support HTTP/2 proxies yet. Also it's debatable
! 2041: whether or not this setting should apply to HTTP/2 proxies. */
! 2042: infof(data, "Ignoring HTTP/2 prior knowledge due to proxy\n");
! 2043: break;
! 2044: }
! 2045:
! 2046: DEBUGF(infof(data, "HTTP/2 over clean TCP\n"));
! 2047: conn->httpversion = 20;
! 2048:
! 2049: result = Curl_http2_switched(conn, NULL, 0);
! 2050: if(result)
! 2051: return result;
! 2052: }
! 2053: #endif
! 2054: break;
! 2055: }
! 2056: }
! 2057: else {
! 2058: /* prepare for a http2 request */
! 2059: result = Curl_http2_setup(conn);
! 2060: if(result)
! 2061: return result;
! 2062: }
! 2063: }
! 2064: http = data->req.protop;
! 2065: DEBUGASSERT(http);
! 2066:
! 2067: if(!data->state.this_is_a_follow) {
! 2068: /* Free to avoid leaking memory on multiple requests*/
! 2069: free(data->state.first_host);
! 2070:
! 2071: data->state.first_host = strdup(conn->host.name);
! 2072: if(!data->state.first_host)
! 2073: return CURLE_OUT_OF_MEMORY;
! 2074:
! 2075: data->state.first_remote_port = conn->remote_port;
! 2076: }
! 2077:
! 2078: if((conn->handler->protocol&(PROTO_FAMILY_HTTP|CURLPROTO_FTP)) &&
! 2079: data->set.upload) {
! 2080: httpreq = HTTPREQ_PUT;
! 2081: }
! 2082:
! 2083: /* Now set the 'request' pointer to the proper request string */
! 2084: if(data->set.str[STRING_CUSTOMREQUEST])
! 2085: request = data->set.str[STRING_CUSTOMREQUEST];
! 2086: else {
! 2087: if(data->set.opt_no_body)
! 2088: request = "HEAD";
! 2089: else {
! 2090: DEBUGASSERT((httpreq > HTTPREQ_NONE) && (httpreq < HTTPREQ_LAST));
! 2091: switch(httpreq) {
! 2092: case HTTPREQ_POST:
! 2093: case HTTPREQ_POST_FORM:
! 2094: case HTTPREQ_POST_MIME:
! 2095: request = "POST";
! 2096: break;
! 2097: case HTTPREQ_PUT:
! 2098: request = "PUT";
! 2099: break;
! 2100: case HTTPREQ_OPTIONS:
! 2101: request = "OPTIONS";
! 2102: break;
! 2103: default: /* this should never happen */
! 2104: case HTTPREQ_GET:
! 2105: request = "GET";
! 2106: break;
! 2107: case HTTPREQ_HEAD:
! 2108: request = "HEAD";
! 2109: break;
! 2110: }
! 2111: }
! 2112: }
! 2113:
! 2114: /* The User-Agent string might have been allocated in url.c already, because
! 2115: it might have been used in the proxy connect, but if we have got a header
! 2116: with the user-agent string specified, we erase the previously made string
! 2117: here. */
! 2118: if(Curl_checkheaders(conn, "User-Agent")) {
! 2119: free(conn->allocptr.uagent);
! 2120: conn->allocptr.uagent = NULL;
! 2121: }
! 2122:
! 2123: /* setup the authentication headers */
! 2124: {
! 2125: char *pq = NULL;
! 2126: if(query && *query) {
! 2127: pq = aprintf("%s?%s", path, query);
! 2128: if(!pq)
! 2129: return CURLE_OUT_OF_MEMORY;
! 2130: }
! 2131: result = Curl_http_output_auth(conn, request, (pq ? pq : path), FALSE);
! 2132: free(pq);
! 2133: if(result)
! 2134: return result;
! 2135: }
! 2136:
! 2137: if(((data->state.authhost.multipass && !data->state.authhost.done)
! 2138: || (data->state.authproxy.multipass && !data->state.authproxy.done)) &&
! 2139: (httpreq != HTTPREQ_GET) &&
! 2140: (httpreq != HTTPREQ_HEAD)) {
! 2141: /* Auth is required and we are not authenticated yet. Make a PUT or POST
! 2142: with content-length zero as a "probe". */
! 2143: conn->bits.authneg = TRUE;
! 2144: }
! 2145: else
! 2146: conn->bits.authneg = FALSE;
! 2147:
! 2148: Curl_safefree(conn->allocptr.ref);
! 2149: if(data->change.referer && !Curl_checkheaders(conn, "Referer")) {
! 2150: conn->allocptr.ref = aprintf("Referer: %s\r\n", data->change.referer);
! 2151: if(!conn->allocptr.ref)
! 2152: return CURLE_OUT_OF_MEMORY;
! 2153: }
! 2154: else
! 2155: conn->allocptr.ref = NULL;
! 2156:
! 2157: #if !defined(CURL_DISABLE_COOKIES)
! 2158: if(data->set.str[STRING_COOKIE] && !Curl_checkheaders(conn, "Cookie"))
! 2159: addcookies = data->set.str[STRING_COOKIE];
! 2160: #endif
! 2161:
! 2162: if(!Curl_checkheaders(conn, "Accept-Encoding") &&
! 2163: data->set.str[STRING_ENCODING]) {
! 2164: Curl_safefree(conn->allocptr.accept_encoding);
! 2165: conn->allocptr.accept_encoding =
! 2166: aprintf("Accept-Encoding: %s\r\n", data->set.str[STRING_ENCODING]);
! 2167: if(!conn->allocptr.accept_encoding)
! 2168: return CURLE_OUT_OF_MEMORY;
! 2169: }
! 2170: else {
! 2171: Curl_safefree(conn->allocptr.accept_encoding);
! 2172: conn->allocptr.accept_encoding = NULL;
! 2173: }
! 2174:
! 2175: #ifdef HAVE_LIBZ
! 2176: /* we only consider transfer-encoding magic if libz support is built-in */
! 2177:
! 2178: if(!Curl_checkheaders(conn, "TE") &&
! 2179: data->set.http_transfer_encoding) {
! 2180: /* When we are to insert a TE: header in the request, we must also insert
! 2181: TE in a Connection: header, so we need to merge the custom provided
! 2182: Connection: header and prevent the original to get sent. Note that if
! 2183: the user has inserted his/hers own TE: header we don't do this magic
! 2184: but then assume that the user will handle it all! */
! 2185: char *cptr = Curl_checkheaders(conn, "Connection");
! 2186: #define TE_HEADER "TE: gzip\r\n"
! 2187:
! 2188: Curl_safefree(conn->allocptr.te);
! 2189:
! 2190: if(cptr) {
! 2191: cptr = Curl_copy_header_value(cptr);
! 2192: if(!cptr)
! 2193: return CURLE_OUT_OF_MEMORY;
! 2194: }
! 2195:
! 2196: /* Create the (updated) Connection: header */
! 2197: conn->allocptr.te = aprintf("Connection: %s%sTE\r\n" TE_HEADER,
! 2198: cptr ? cptr : "", (cptr && *cptr) ? ", ":"");
! 2199:
! 2200: free(cptr);
! 2201: if(!conn->allocptr.te)
! 2202: return CURLE_OUT_OF_MEMORY;
! 2203: }
! 2204: #endif
! 2205:
! 2206: switch(httpreq) {
! 2207: case HTTPREQ_POST_MIME:
! 2208: http->sendit = &data->set.mimepost;
! 2209: break;
! 2210: case HTTPREQ_POST_FORM:
! 2211: /* Convert the form structure into a mime structure. */
! 2212: Curl_mime_cleanpart(&http->form);
! 2213: result = Curl_getformdata(data, &http->form, data->set.httppost,
! 2214: data->state.fread_func);
! 2215: if(result)
! 2216: return result;
! 2217: http->sendit = &http->form;
! 2218: break;
! 2219: default:
! 2220: http->sendit = NULL;
! 2221: }
! 2222:
! 2223: #ifndef CURL_DISABLE_MIME
! 2224: if(http->sendit) {
! 2225: const char *cthdr = Curl_checkheaders(conn, "Content-Type");
! 2226:
! 2227: /* Read and seek body only. */
! 2228: http->sendit->flags |= MIME_BODY_ONLY;
! 2229:
! 2230: /* Prepare the mime structure headers & set content type. */
! 2231:
! 2232: if(cthdr)
! 2233: for(cthdr += 13; *cthdr == ' '; cthdr++)
! 2234: ;
! 2235: else if(http->sendit->kind == MIMEKIND_MULTIPART)
! 2236: cthdr = "multipart/form-data";
! 2237:
! 2238: curl_mime_headers(http->sendit, data->set.headers, 0);
! 2239: result = Curl_mime_prepare_headers(http->sendit, cthdr,
! 2240: NULL, MIMESTRATEGY_FORM);
! 2241: curl_mime_headers(http->sendit, NULL, 0);
! 2242: if(!result)
! 2243: result = Curl_mime_rewind(http->sendit);
! 2244: if(result)
! 2245: return result;
! 2246: http->postsize = Curl_mime_size(http->sendit);
! 2247: }
! 2248: #endif
! 2249:
! 2250: ptr = Curl_checkheaders(conn, "Transfer-Encoding");
! 2251: if(ptr) {
! 2252: /* Some kind of TE is requested, check if 'chunked' is chosen */
! 2253: data->req.upload_chunky =
! 2254: Curl_compareheader(ptr, "Transfer-Encoding:", "chunked");
! 2255: }
! 2256: else {
! 2257: if((conn->handler->protocol & PROTO_FAMILY_HTTP) &&
! 2258: (((httpreq == HTTPREQ_POST_MIME || httpreq == HTTPREQ_POST_FORM) &&
! 2259: http->postsize < 0) ||
! 2260: ((data->set.upload || httpreq == HTTPREQ_POST) &&
! 2261: data->state.infilesize == -1))) {
! 2262: if(conn->bits.authneg)
! 2263: /* don't enable chunked during auth neg */
! 2264: ;
! 2265: else if(use_http_1_1plus(data, conn)) {
! 2266: if(conn->httpversion < 20)
! 2267: /* HTTP, upload, unknown file size and not HTTP 1.0 */
! 2268: data->req.upload_chunky = TRUE;
! 2269: }
! 2270: else {
! 2271: failf(data, "Chunky upload is not supported by HTTP 1.0");
! 2272: return CURLE_UPLOAD_FAILED;
! 2273: }
! 2274: }
! 2275: else {
! 2276: /* else, no chunky upload */
! 2277: data->req.upload_chunky = FALSE;
! 2278: }
! 2279:
! 2280: if(data->req.upload_chunky)
! 2281: te = "Transfer-Encoding: chunked\r\n";
! 2282: }
! 2283:
! 2284: Curl_safefree(conn->allocptr.host);
! 2285:
! 2286: ptr = Curl_checkheaders(conn, "Host");
! 2287: if(ptr && (!data->state.this_is_a_follow ||
! 2288: strcasecompare(data->state.first_host, conn->host.name))) {
! 2289: #if !defined(CURL_DISABLE_COOKIES)
! 2290: /* If we have a given custom Host: header, we extract the host name in
! 2291: order to possibly use it for cookie reasons later on. We only allow the
! 2292: custom Host: header if this is NOT a redirect, as setting Host: in the
! 2293: redirected request is being out on thin ice. Except if the host name
! 2294: is the same as the first one! */
! 2295: char *cookiehost = Curl_copy_header_value(ptr);
! 2296: if(!cookiehost)
! 2297: return CURLE_OUT_OF_MEMORY;
! 2298: if(!*cookiehost)
! 2299: /* ignore empty data */
! 2300: free(cookiehost);
! 2301: else {
! 2302: /* If the host begins with '[', we start searching for the port after
! 2303: the bracket has been closed */
! 2304: if(*cookiehost == '[') {
! 2305: char *closingbracket;
! 2306: /* since the 'cookiehost' is an allocated memory area that will be
! 2307: freed later we cannot simply increment the pointer */
! 2308: memmove(cookiehost, cookiehost + 1, strlen(cookiehost) - 1);
! 2309: closingbracket = strchr(cookiehost, ']');
! 2310: if(closingbracket)
! 2311: *closingbracket = 0;
! 2312: }
! 2313: else {
! 2314: int startsearch = 0;
! 2315: char *colon = strchr(cookiehost + startsearch, ':');
! 2316: if(colon)
! 2317: *colon = 0; /* The host must not include an embedded port number */
! 2318: }
! 2319: Curl_safefree(conn->allocptr.cookiehost);
! 2320: conn->allocptr.cookiehost = cookiehost;
! 2321: }
! 2322: #endif
! 2323:
! 2324: if(strcmp("Host:", ptr)) {
! 2325: conn->allocptr.host = aprintf("Host:%s\r\n", &ptr[5]);
! 2326: if(!conn->allocptr.host)
! 2327: return CURLE_OUT_OF_MEMORY;
! 2328: }
! 2329: else
! 2330: /* when clearing the header */
! 2331: conn->allocptr.host = NULL;
! 2332: }
! 2333: else {
! 2334: /* When building Host: headers, we must put the host name within
! 2335: [brackets] if the host name is a plain IPv6-address. RFC2732-style. */
! 2336:
! 2337: if(((conn->given->protocol&CURLPROTO_HTTPS) &&
! 2338: (conn->remote_port == PORT_HTTPS)) ||
! 2339: ((conn->given->protocol&CURLPROTO_HTTP) &&
! 2340: (conn->remote_port == PORT_HTTP)) )
! 2341: /* if(HTTPS on port 443) OR (HTTP on port 80) then don't include
! 2342: the port number in the host string */
! 2343: conn->allocptr.host = aprintf("Host: %s%s%s\r\n",
! 2344: conn->bits.ipv6_ip?"[":"",
! 2345: host,
! 2346: conn->bits.ipv6_ip?"]":"");
! 2347: else
! 2348: conn->allocptr.host = aprintf("Host: %s%s%s:%d\r\n",
! 2349: conn->bits.ipv6_ip?"[":"",
! 2350: host,
! 2351: conn->bits.ipv6_ip?"]":"",
! 2352: conn->remote_port);
! 2353:
! 2354: if(!conn->allocptr.host)
! 2355: /* without Host: we can't make a nice request */
! 2356: return CURLE_OUT_OF_MEMORY;
! 2357: }
! 2358:
! 2359: #ifndef CURL_DISABLE_PROXY
! 2360: if(conn->bits.httpproxy && !conn->bits.tunnel_proxy) {
! 2361: /* Using a proxy but does not tunnel through it */
! 2362:
! 2363: /* The path sent to the proxy is in fact the entire URL. But if the remote
! 2364: host is a IDN-name, we must make sure that the request we produce only
! 2365: uses the encoded host name! */
! 2366:
! 2367: /* and no fragment part */
! 2368: CURLUcode uc;
! 2369: CURLU *h = curl_url_dup(data->state.uh);
! 2370: if(!h)
! 2371: return CURLE_OUT_OF_MEMORY;
! 2372:
! 2373: if(conn->host.dispname != conn->host.name) {
! 2374: uc = curl_url_set(h, CURLUPART_HOST, conn->host.name, 0);
! 2375: if(uc) {
! 2376: curl_url_cleanup(h);
! 2377: return CURLE_OUT_OF_MEMORY;
! 2378: }
! 2379: }
! 2380: uc = curl_url_set(h, CURLUPART_FRAGMENT, NULL, 0);
! 2381: if(uc) {
! 2382: curl_url_cleanup(h);
! 2383: return CURLE_OUT_OF_MEMORY;
! 2384: }
! 2385:
! 2386: if(strcasecompare("http", data->state.up.scheme)) {
! 2387: /* when getting HTTP, we don't want the userinfo the URL */
! 2388: uc = curl_url_set(h, CURLUPART_USER, NULL, 0);
! 2389: if(uc) {
! 2390: curl_url_cleanup(h);
! 2391: return CURLE_OUT_OF_MEMORY;
! 2392: }
! 2393: uc = curl_url_set(h, CURLUPART_PASSWORD, NULL, 0);
! 2394: if(uc) {
! 2395: curl_url_cleanup(h);
! 2396: return CURLE_OUT_OF_MEMORY;
! 2397: }
! 2398: }
! 2399: /* Extract the URL to use in the request. Store in STRING_TEMP_URL for
! 2400: clean-up reasons if the function returns before the free() further
! 2401: down. */
! 2402: uc = curl_url_get(h, CURLUPART_URL, &data->set.str[STRING_TEMP_URL], 0);
! 2403: if(uc) {
! 2404: curl_url_cleanup(h);
! 2405: return CURLE_OUT_OF_MEMORY;
! 2406: }
! 2407:
! 2408: curl_url_cleanup(h);
! 2409:
! 2410: if(strcasecompare("ftp", data->state.up.scheme)) {
! 2411: if(data->set.proxy_transfer_mode) {
! 2412: /* when doing ftp, append ;type=<a|i> if not present */
! 2413: char *type = strstr(path, ";type=");
! 2414: if(type && type[6] && type[7] == 0) {
! 2415: switch(Curl_raw_toupper(type[6])) {
! 2416: case 'A':
! 2417: case 'D':
! 2418: case 'I':
! 2419: break;
! 2420: default:
! 2421: type = NULL;
! 2422: }
! 2423: }
! 2424: if(!type) {
! 2425: char *p = ftp_typecode;
! 2426: /* avoid sending invalid URLs like ftp://example.com;type=i if the
! 2427: * user specified ftp://example.com without the slash */
! 2428: if(!*data->state.up.path && path[strlen(path) - 1] != '/') {
! 2429: *p++ = '/';
! 2430: }
! 2431: msnprintf(p, sizeof(ftp_typecode) - 1, ";type=%c",
! 2432: data->set.prefer_ascii ? 'a' : 'i');
! 2433: }
! 2434: }
! 2435: if(conn->bits.user_passwd && !conn->bits.userpwd_in_url)
! 2436: paste_ftp_userpwd = TRUE;
! 2437: }
! 2438: }
! 2439: #endif /* CURL_DISABLE_PROXY */
! 2440:
! 2441: http->p_accept = Curl_checkheaders(conn, "Accept")?NULL:"Accept: */*\r\n";
! 2442:
! 2443: if((HTTPREQ_POST == httpreq || HTTPREQ_PUT == httpreq) &&
! 2444: data->state.resume_from) {
! 2445: /**********************************************************************
! 2446: * Resuming upload in HTTP means that we PUT or POST and that we have
! 2447: * got a resume_from value set. The resume value has already created
! 2448: * a Range: header that will be passed along. We need to "fast forward"
! 2449: * the file the given number of bytes and decrease the assume upload
! 2450: * file size before we continue this venture in the dark lands of HTTP.
! 2451: * Resuming mime/form posting at an offset > 0 has no sense and is ignored.
! 2452: *********************************************************************/
! 2453:
! 2454: if(data->state.resume_from < 0) {
! 2455: /*
! 2456: * This is meant to get the size of the present remote-file by itself.
! 2457: * We don't support this now. Bail out!
! 2458: */
! 2459: data->state.resume_from = 0;
! 2460: }
! 2461:
! 2462: if(data->state.resume_from && !data->state.this_is_a_follow) {
! 2463: /* do we still game? */
! 2464:
! 2465: /* Now, let's read off the proper amount of bytes from the
! 2466: input. */
! 2467: int seekerr = CURL_SEEKFUNC_CANTSEEK;
! 2468: if(conn->seek_func) {
! 2469: Curl_set_in_callback(data, true);
! 2470: seekerr = conn->seek_func(conn->seek_client, data->state.resume_from,
! 2471: SEEK_SET);
! 2472: Curl_set_in_callback(data, false);
! 2473: }
! 2474:
! 2475: if(seekerr != CURL_SEEKFUNC_OK) {
! 2476: curl_off_t passed = 0;
! 2477:
! 2478: if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
! 2479: failf(data, "Could not seek stream");
! 2480: return CURLE_READ_ERROR;
! 2481: }
! 2482: /* when seekerr == CURL_SEEKFUNC_CANTSEEK (can't seek to offset) */
! 2483: do {
! 2484: size_t readthisamountnow =
! 2485: (data->state.resume_from - passed > data->set.buffer_size) ?
! 2486: (size_t)data->set.buffer_size :
! 2487: curlx_sotouz(data->state.resume_from - passed);
! 2488:
! 2489: size_t actuallyread =
! 2490: data->state.fread_func(data->state.buffer, 1, readthisamountnow,
! 2491: data->state.in);
! 2492:
! 2493: passed += actuallyread;
! 2494: if((actuallyread == 0) || (actuallyread > readthisamountnow)) {
! 2495: /* this checks for greater-than only to make sure that the
! 2496: CURL_READFUNC_ABORT return code still aborts */
! 2497: failf(data, "Could only read %" CURL_FORMAT_CURL_OFF_T
! 2498: " bytes from the input", passed);
! 2499: return CURLE_READ_ERROR;
! 2500: }
! 2501: } while(passed < data->state.resume_from);
! 2502: }
! 2503:
! 2504: /* now, decrease the size of the read */
! 2505: if(data->state.infilesize>0) {
! 2506: data->state.infilesize -= data->state.resume_from;
! 2507:
! 2508: if(data->state.infilesize <= 0) {
! 2509: failf(data, "File already completely uploaded");
! 2510: return CURLE_PARTIAL_FILE;
! 2511: }
! 2512: }
! 2513: /* we've passed, proceed as normal */
! 2514: }
! 2515: }
! 2516: if(data->state.use_range) {
! 2517: /*
! 2518: * A range is selected. We use different headers whether we're downloading
! 2519: * or uploading and we always let customized headers override our internal
! 2520: * ones if any such are specified.
! 2521: */
! 2522: if(((httpreq == HTTPREQ_GET) || (httpreq == HTTPREQ_HEAD)) &&
! 2523: !Curl_checkheaders(conn, "Range")) {
! 2524: /* if a line like this was already allocated, free the previous one */
! 2525: free(conn->allocptr.rangeline);
! 2526: conn->allocptr.rangeline = aprintf("Range: bytes=%s\r\n",
! 2527: data->state.range);
! 2528: }
! 2529: else if((httpreq == HTTPREQ_POST || httpreq == HTTPREQ_PUT) &&
! 2530: !Curl_checkheaders(conn, "Content-Range")) {
! 2531:
! 2532: /* if a line like this was already allocated, free the previous one */
! 2533: free(conn->allocptr.rangeline);
! 2534:
! 2535: if(data->set.set_resume_from < 0) {
! 2536: /* Upload resume was asked for, but we don't know the size of the
! 2537: remote part so we tell the server (and act accordingly) that we
! 2538: upload the whole file (again) */
! 2539: conn->allocptr.rangeline =
! 2540: aprintf("Content-Range: bytes 0-%" CURL_FORMAT_CURL_OFF_T
! 2541: "/%" CURL_FORMAT_CURL_OFF_T "\r\n",
! 2542: data->state.infilesize - 1, data->state.infilesize);
! 2543:
! 2544: }
! 2545: else if(data->state.resume_from) {
! 2546: /* This is because "resume" was selected */
! 2547: curl_off_t total_expected_size =
! 2548: data->state.resume_from + data->state.infilesize;
! 2549: conn->allocptr.rangeline =
! 2550: aprintf("Content-Range: bytes %s%" CURL_FORMAT_CURL_OFF_T
! 2551: "/%" CURL_FORMAT_CURL_OFF_T "\r\n",
! 2552: data->state.range, total_expected_size-1,
! 2553: total_expected_size);
! 2554: }
! 2555: else {
! 2556: /* Range was selected and then we just pass the incoming range and
! 2557: append total size */
! 2558: conn->allocptr.rangeline =
! 2559: aprintf("Content-Range: bytes %s/%" CURL_FORMAT_CURL_OFF_T "\r\n",
! 2560: data->state.range, data->state.infilesize);
! 2561: }
! 2562: if(!conn->allocptr.rangeline)
! 2563: return CURLE_OUT_OF_MEMORY;
! 2564: }
! 2565: }
! 2566:
! 2567: httpstring = get_http_string(data, conn);
! 2568:
! 2569: /* initialize a dynamic send-buffer */
! 2570: req_buffer = Curl_add_buffer_init();
! 2571:
! 2572: if(!req_buffer)
! 2573: return CURLE_OUT_OF_MEMORY;
! 2574:
! 2575: /* add the main request stuff */
! 2576: /* GET/HEAD/POST/PUT */
! 2577: result = Curl_add_bufferf(&req_buffer, "%s ", request);
! 2578: if(result)
! 2579: return result;
! 2580:
! 2581: if(data->set.str[STRING_TARGET]) {
! 2582: path = data->set.str[STRING_TARGET];
! 2583: query = NULL;
! 2584: }
! 2585:
! 2586: #ifndef CURL_DISABLE_PROXY
! 2587: /* url */
! 2588: if(conn->bits.httpproxy && !conn->bits.tunnel_proxy) {
! 2589: char *url = data->set.str[STRING_TEMP_URL];
! 2590: result = Curl_add_buffer(&req_buffer, url, strlen(url));
! 2591: Curl_safefree(data->set.str[STRING_TEMP_URL]);
! 2592: }
! 2593: else
! 2594: #endif
! 2595: if(paste_ftp_userpwd)
! 2596: result = Curl_add_bufferf(&req_buffer, "ftp://%s:%s@%s",
! 2597: conn->user, conn->passwd,
! 2598: path + sizeof("ftp://") - 1);
! 2599: else {
! 2600: result = Curl_add_buffer(&req_buffer, path, strlen(path));
! 2601: if(result)
! 2602: return result;
! 2603: if(query)
! 2604: result = Curl_add_bufferf(&req_buffer, "?%s", query);
! 2605: }
! 2606: if(result)
! 2607: return result;
! 2608:
! 2609: #ifdef USE_ALTSVC
! 2610: if(conn->bits.altused && !Curl_checkheaders(conn, "Alt-Used")) {
! 2611: altused = aprintf("Alt-Used: %s:%d\r\n",
! 2612: conn->conn_to_host.name, conn->conn_to_port);
! 2613: if(!altused) {
! 2614: Curl_add_buffer_free(&req_buffer);
! 2615: return CURLE_OUT_OF_MEMORY;
! 2616: }
! 2617: }
! 2618: #endif
! 2619: result =
! 2620: Curl_add_bufferf(&req_buffer,
! 2621: "%s" /* ftp typecode (;type=x) */
! 2622: " HTTP/%s\r\n" /* HTTP version */
! 2623: "%s" /* host */
! 2624: "%s" /* proxyuserpwd */
! 2625: "%s" /* userpwd */
! 2626: "%s" /* range */
! 2627: "%s" /* user agent */
! 2628: "%s" /* accept */
! 2629: "%s" /* TE: */
! 2630: "%s" /* accept-encoding */
! 2631: "%s" /* referer */
! 2632: "%s" /* Proxy-Connection */
! 2633: "%s" /* transfer-encoding */
! 2634: "%s",/* Alt-Used */
! 2635:
! 2636: ftp_typecode,
! 2637: httpstring,
! 2638: (conn->allocptr.host?conn->allocptr.host:""),
! 2639: conn->allocptr.proxyuserpwd?
! 2640: conn->allocptr.proxyuserpwd:"",
! 2641: conn->allocptr.userpwd?conn->allocptr.userpwd:"",
! 2642: (data->state.use_range && conn->allocptr.rangeline)?
! 2643: conn->allocptr.rangeline:"",
! 2644: (data->set.str[STRING_USERAGENT] &&
! 2645: *data->set.str[STRING_USERAGENT] &&
! 2646: conn->allocptr.uagent)?
! 2647: conn->allocptr.uagent:"",
! 2648: http->p_accept?http->p_accept:"",
! 2649: conn->allocptr.te?conn->allocptr.te:"",
! 2650: (data->set.str[STRING_ENCODING] &&
! 2651: *data->set.str[STRING_ENCODING] &&
! 2652: conn->allocptr.accept_encoding)?
! 2653: conn->allocptr.accept_encoding:"",
! 2654: (data->change.referer && conn->allocptr.ref)?
! 2655: conn->allocptr.ref:"" /* Referer: <data> */,
! 2656: (conn->bits.httpproxy &&
! 2657: !conn->bits.tunnel_proxy &&
! 2658: !Curl_checkProxyheaders(conn, "Proxy-Connection"))?
! 2659: "Proxy-Connection: Keep-Alive\r\n":"",
! 2660: te,
! 2661: altused ? altused : ""
! 2662: );
! 2663:
! 2664: /* clear userpwd and proxyuserpwd to avoid re-using old credentials
! 2665: * from re-used connections */
! 2666: Curl_safefree(conn->allocptr.userpwd);
! 2667: Curl_safefree(conn->allocptr.proxyuserpwd);
! 2668: free(altused);
! 2669:
! 2670: if(result)
! 2671: return result;
! 2672:
! 2673: if(!(conn->handler->flags&PROTOPT_SSL) &&
! 2674: conn->httpversion != 20 &&
! 2675: (data->set.httpversion == CURL_HTTP_VERSION_2)) {
! 2676: /* append HTTP2 upgrade magic stuff to the HTTP request if it isn't done
! 2677: over SSL */
! 2678: result = Curl_http2_request_upgrade(req_buffer, conn);
! 2679: if(result)
! 2680: return result;
! 2681: }
! 2682:
! 2683: #if !defined(CURL_DISABLE_COOKIES)
! 2684: if(data->cookies || addcookies) {
! 2685: struct Cookie *co = NULL; /* no cookies from start */
! 2686: int count = 0;
! 2687:
! 2688: if(data->cookies && data->state.cookie_engine) {
! 2689: Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
! 2690: co = Curl_cookie_getlist(data->cookies,
! 2691: conn->allocptr.cookiehost?
! 2692: conn->allocptr.cookiehost:host,
! 2693: data->state.up.path,
! 2694: (conn->handler->protocol&CURLPROTO_HTTPS)?
! 2695: TRUE:FALSE);
! 2696: Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
! 2697: }
! 2698: if(co) {
! 2699: struct Cookie *store = co;
! 2700: /* now loop through all cookies that matched */
! 2701: while(co) {
! 2702: if(co->value) {
! 2703: if(0 == count) {
! 2704: result = Curl_add_bufferf(&req_buffer, "Cookie: ");
! 2705: if(result)
! 2706: break;
! 2707: }
! 2708: result = Curl_add_bufferf(&req_buffer,
! 2709: "%s%s=%s", count?"; ":"",
! 2710: co->name, co->value);
! 2711: if(result)
! 2712: break;
! 2713: count++;
! 2714: }
! 2715: co = co->next; /* next cookie please */
! 2716: }
! 2717: Curl_cookie_freelist(store);
! 2718: }
! 2719: if(addcookies && !result) {
! 2720: if(!count)
! 2721: result = Curl_add_bufferf(&req_buffer, "Cookie: ");
! 2722: if(!result) {
! 2723: result = Curl_add_bufferf(&req_buffer, "%s%s", count?"; ":"",
! 2724: addcookies);
! 2725: count++;
! 2726: }
! 2727: }
! 2728: if(count && !result)
! 2729: result = Curl_add_buffer(&req_buffer, "\r\n", 2);
! 2730:
! 2731: if(result)
! 2732: return result;
! 2733: }
! 2734: #endif
! 2735:
! 2736: result = Curl_add_timecondition(conn, req_buffer);
! 2737: if(result)
! 2738: return result;
! 2739:
! 2740: result = Curl_add_custom_headers(conn, FALSE, req_buffer);
! 2741: if(result)
! 2742: return result;
! 2743:
! 2744: http->postdata = NULL; /* nothing to post at this point */
! 2745: Curl_pgrsSetUploadSize(data, -1); /* upload size is unknown atm */
! 2746:
! 2747: /* If 'authdone' is FALSE, we must not set the write socket index to the
! 2748: Curl_transfer() call below, as we're not ready to actually upload any
! 2749: data yet. */
! 2750:
! 2751: switch(httpreq) {
! 2752:
! 2753: case HTTPREQ_PUT: /* Let's PUT the data to the server! */
! 2754:
! 2755: if(conn->bits.authneg)
! 2756: postsize = 0;
! 2757: else
! 2758: postsize = data->state.infilesize;
! 2759:
! 2760: if((postsize != -1) && !data->req.upload_chunky &&
! 2761: (conn->bits.authneg || !Curl_checkheaders(conn, "Content-Length"))) {
! 2762: /* only add Content-Length if not uploading chunked */
! 2763: result = Curl_add_bufferf(&req_buffer,
! 2764: "Content-Length: %" CURL_FORMAT_CURL_OFF_T
! 2765: "\r\n", postsize);
! 2766: if(result)
! 2767: return result;
! 2768: }
! 2769:
! 2770: if(postsize != 0) {
! 2771: result = expect100(data, conn, req_buffer);
! 2772: if(result)
! 2773: return result;
! 2774: }
! 2775:
! 2776: result = Curl_add_buffer(&req_buffer, "\r\n", 2); /* end of headers */
! 2777: if(result)
! 2778: return result;
! 2779:
! 2780: /* set the upload size to the progress meter */
! 2781: Curl_pgrsSetUploadSize(data, postsize);
! 2782:
! 2783: /* this sends the buffer and frees all the buffer resources */
! 2784: result = Curl_add_buffer_send(&req_buffer, conn,
! 2785: &data->info.request_size, 0, FIRSTSOCKET);
! 2786: if(result)
! 2787: failf(data, "Failed sending PUT request");
! 2788: else
! 2789: /* prepare for transfer */
! 2790: Curl_setup_transfer(data, FIRSTSOCKET, -1, TRUE,
! 2791: postsize?FIRSTSOCKET:-1);
! 2792: if(result)
! 2793: return result;
! 2794: break;
! 2795:
! 2796: case HTTPREQ_POST_FORM:
! 2797: case HTTPREQ_POST_MIME:
! 2798: /* This is form posting using mime data. */
! 2799: if(conn->bits.authneg) {
! 2800: /* nothing to post! */
! 2801: result = Curl_add_bufferf(&req_buffer, "Content-Length: 0\r\n\r\n");
! 2802: if(result)
! 2803: return result;
! 2804:
! 2805: result = Curl_add_buffer_send(&req_buffer, conn,
! 2806: &data->info.request_size, 0, FIRSTSOCKET);
! 2807: if(result)
! 2808: failf(data, "Failed sending POST request");
! 2809: else
! 2810: /* setup variables for the upcoming transfer */
! 2811: Curl_setup_transfer(data, FIRSTSOCKET, -1, TRUE, -1);
! 2812: break;
! 2813: }
! 2814:
! 2815: data->state.infilesize = postsize = http->postsize;
! 2816:
! 2817: /* We only set Content-Length and allow a custom Content-Length if
! 2818: we don't upload data chunked, as RFC2616 forbids us to set both
! 2819: kinds of headers (Transfer-Encoding: chunked and Content-Length) */
! 2820: if(postsize != -1 && !data->req.upload_chunky &&
! 2821: (conn->bits.authneg || !Curl_checkheaders(conn, "Content-Length"))) {
! 2822: /* we allow replacing this header if not during auth negotiation,
! 2823: although it isn't very wise to actually set your own */
! 2824: result = Curl_add_bufferf(&req_buffer,
! 2825: "Content-Length: %" CURL_FORMAT_CURL_OFF_T
! 2826: "\r\n", postsize);
! 2827: if(result)
! 2828: return result;
! 2829: }
! 2830:
! 2831: #ifndef CURL_DISABLE_MIME
! 2832: /* Output mime-generated headers. */
! 2833: {
! 2834: struct curl_slist *hdr;
! 2835:
! 2836: for(hdr = http->sendit->curlheaders; hdr; hdr = hdr->next) {
! 2837: result = Curl_add_bufferf(&req_buffer, "%s\r\n", hdr->data);
! 2838: if(result)
! 2839: return result;
! 2840: }
! 2841: }
! 2842: #endif
! 2843:
! 2844: /* For really small posts we don't use Expect: headers at all, and for
! 2845: the somewhat bigger ones we allow the app to disable it. Just make
! 2846: sure that the expect100header is always set to the preferred value
! 2847: here. */
! 2848: ptr = Curl_checkheaders(conn, "Expect");
! 2849: if(ptr) {
! 2850: data->state.expect100header =
! 2851: Curl_compareheader(ptr, "Expect:", "100-continue");
! 2852: }
! 2853: else if(postsize > EXPECT_100_THRESHOLD || postsize < 0) {
! 2854: result = expect100(data, conn, req_buffer);
! 2855: if(result)
! 2856: return result;
! 2857: }
! 2858: else
! 2859: data->state.expect100header = FALSE;
! 2860:
! 2861: /* make the request end in a true CRLF */
! 2862: result = Curl_add_buffer(&req_buffer, "\r\n", 2);
! 2863: if(result)
! 2864: return result;
! 2865:
! 2866: /* set the upload size to the progress meter */
! 2867: Curl_pgrsSetUploadSize(data, postsize);
! 2868:
! 2869: /* Read from mime structure. */
! 2870: data->state.fread_func = (curl_read_callback) Curl_mime_read;
! 2871: data->state.in = (void *) http->sendit;
! 2872: http->sending = HTTPSEND_BODY;
! 2873:
! 2874: /* this sends the buffer and frees all the buffer resources */
! 2875: result = Curl_add_buffer_send(&req_buffer, conn,
! 2876: &data->info.request_size, 0, FIRSTSOCKET);
! 2877: if(result)
! 2878: failf(data, "Failed sending POST request");
! 2879: else
! 2880: /* prepare for transfer */
! 2881: Curl_setup_transfer(data, FIRSTSOCKET, -1, TRUE,
! 2882: postsize?FIRSTSOCKET:-1);
! 2883: if(result)
! 2884: return result;
! 2885:
! 2886: break;
! 2887:
! 2888: case HTTPREQ_POST:
! 2889: /* this is the simple POST, using x-www-form-urlencoded style */
! 2890:
! 2891: if(conn->bits.authneg)
! 2892: postsize = 0;
! 2893: else
! 2894: /* the size of the post body */
! 2895: postsize = data->state.infilesize;
! 2896:
! 2897: /* We only set Content-Length and allow a custom Content-Length if
! 2898: we don't upload data chunked, as RFC2616 forbids us to set both
! 2899: kinds of headers (Transfer-Encoding: chunked and Content-Length) */
! 2900: if((postsize != -1) && !data->req.upload_chunky &&
! 2901: (conn->bits.authneg || !Curl_checkheaders(conn, "Content-Length"))) {
! 2902: /* we allow replacing this header if not during auth negotiation,
! 2903: although it isn't very wise to actually set your own */
! 2904: result = Curl_add_bufferf(&req_buffer,
! 2905: "Content-Length: %" CURL_FORMAT_CURL_OFF_T
! 2906: "\r\n", postsize);
! 2907: if(result)
! 2908: return result;
! 2909: }
! 2910:
! 2911: if(!Curl_checkheaders(conn, "Content-Type")) {
! 2912: result = Curl_add_bufferf(&req_buffer,
! 2913: "Content-Type: application/"
! 2914: "x-www-form-urlencoded\r\n");
! 2915: if(result)
! 2916: return result;
! 2917: }
! 2918:
! 2919: /* For really small posts we don't use Expect: headers at all, and for
! 2920: the somewhat bigger ones we allow the app to disable it. Just make
! 2921: sure that the expect100header is always set to the preferred value
! 2922: here. */
! 2923: ptr = Curl_checkheaders(conn, "Expect");
! 2924: if(ptr) {
! 2925: data->state.expect100header =
! 2926: Curl_compareheader(ptr, "Expect:", "100-continue");
! 2927: }
! 2928: else if(postsize > EXPECT_100_THRESHOLD || postsize < 0) {
! 2929: result = expect100(data, conn, req_buffer);
! 2930: if(result)
! 2931: return result;
! 2932: }
! 2933: else
! 2934: data->state.expect100header = FALSE;
! 2935:
! 2936: if(data->set.postfields) {
! 2937:
! 2938: /* In HTTP2, we send request body in DATA frame regardless of
! 2939: its size. */
! 2940: if(conn->httpversion != 20 &&
! 2941: !data->state.expect100header &&
! 2942: (postsize < MAX_INITIAL_POST_SIZE)) {
! 2943: /* if we don't use expect: 100 AND
! 2944: postsize is less than MAX_INITIAL_POST_SIZE
! 2945:
! 2946: then append the post data to the HTTP request header. This limit
! 2947: is no magic limit but only set to prevent really huge POSTs to
! 2948: get the data duplicated with malloc() and family. */
! 2949:
! 2950: result = Curl_add_buffer(&req_buffer, "\r\n", 2); /* end of headers! */
! 2951: if(result)
! 2952: return result;
! 2953:
! 2954: if(!data->req.upload_chunky) {
! 2955: /* We're not sending it 'chunked', append it to the request
! 2956: already now to reduce the number if send() calls */
! 2957: result = Curl_add_buffer(&req_buffer, data->set.postfields,
! 2958: (size_t)postsize);
! 2959: included_body = postsize;
! 2960: }
! 2961: else {
! 2962: if(postsize) {
! 2963: /* Append the POST data chunky-style */
! 2964: result = Curl_add_bufferf(&req_buffer, "%x\r\n", (int)postsize);
! 2965: if(!result) {
! 2966: result = Curl_add_buffer(&req_buffer, data->set.postfields,
! 2967: (size_t)postsize);
! 2968: if(!result)
! 2969: result = Curl_add_buffer(&req_buffer, "\r\n", 2);
! 2970: included_body = postsize + 2;
! 2971: }
! 2972: }
! 2973: if(!result)
! 2974: result = Curl_add_buffer(&req_buffer, "\x30\x0d\x0a\x0d\x0a", 5);
! 2975: /* 0 CR LF CR LF */
! 2976: included_body += 5;
! 2977: }
! 2978: if(result)
! 2979: return result;
! 2980: /* Make sure the progress information is accurate */
! 2981: Curl_pgrsSetUploadSize(data, postsize);
! 2982: }
! 2983: else {
! 2984: /* A huge POST coming up, do data separate from the request */
! 2985: http->postsize = postsize;
! 2986: http->postdata = data->set.postfields;
! 2987:
! 2988: http->sending = HTTPSEND_BODY;
! 2989:
! 2990: data->state.fread_func = (curl_read_callback)readmoredata;
! 2991: data->state.in = (void *)conn;
! 2992:
! 2993: /* set the upload size to the progress meter */
! 2994: Curl_pgrsSetUploadSize(data, http->postsize);
! 2995:
! 2996: result = Curl_add_buffer(&req_buffer, "\r\n", 2); /* end of headers! */
! 2997: if(result)
! 2998: return result;
! 2999: }
! 3000: }
! 3001: else {
! 3002: result = Curl_add_buffer(&req_buffer, "\r\n", 2); /* end of headers! */
! 3003: if(result)
! 3004: return result;
! 3005:
! 3006: if(data->req.upload_chunky && conn->bits.authneg) {
! 3007: /* Chunky upload is selected and we're negotiating auth still, send
! 3008: end-of-data only */
! 3009: result = Curl_add_buffer(&req_buffer,
! 3010: "\x30\x0d\x0a\x0d\x0a", 5);
! 3011: /* 0 CR LF CR LF */
! 3012: if(result)
! 3013: return result;
! 3014: }
! 3015:
! 3016: else if(data->state.infilesize) {
! 3017: /* set the upload size to the progress meter */
! 3018: Curl_pgrsSetUploadSize(data, postsize?postsize:-1);
! 3019:
! 3020: /* set the pointer to mark that we will send the post body using the
! 3021: read callback, but only if we're not in authenticate
! 3022: negotiation */
! 3023: if(!conn->bits.authneg) {
! 3024: http->postdata = (char *)&http->postdata;
! 3025: http->postsize = postsize;
! 3026: }
! 3027: }
! 3028: }
! 3029: /* issue the request */
! 3030: result = Curl_add_buffer_send(&req_buffer, conn, &data->info.request_size,
! 3031: (size_t)included_body, FIRSTSOCKET);
! 3032:
! 3033: if(result)
! 3034: failf(data, "Failed sending HTTP POST request");
! 3035: else
! 3036: Curl_setup_transfer(data, FIRSTSOCKET, -1, TRUE,
! 3037: http->postdata?FIRSTSOCKET:-1);
! 3038: break;
! 3039:
! 3040: default:
! 3041: result = Curl_add_buffer(&req_buffer, "\r\n", 2);
! 3042: if(result)
! 3043: return result;
! 3044:
! 3045: /* issue the request */
! 3046: result = Curl_add_buffer_send(&req_buffer, conn,
! 3047: &data->info.request_size, 0, FIRSTSOCKET);
! 3048:
! 3049: if(result)
! 3050: failf(data, "Failed sending HTTP request");
! 3051: else
! 3052: /* HTTP GET/HEAD download: */
! 3053: Curl_setup_transfer(data, FIRSTSOCKET, -1, TRUE, -1);
! 3054: }
! 3055: if(result)
! 3056: return result;
! 3057: if(!postsize && (http->sending != HTTPSEND_REQUEST))
! 3058: data->req.upload_done = TRUE;
! 3059:
! 3060: if(data->req.writebytecount) {
! 3061: /* if a request-body has been sent off, we make sure this progress is noted
! 3062: properly */
! 3063: Curl_pgrsSetUploadCounter(data, data->req.writebytecount);
! 3064: if(Curl_pgrsUpdate(conn))
! 3065: result = CURLE_ABORTED_BY_CALLBACK;
! 3066:
! 3067: if(data->req.writebytecount >= postsize) {
! 3068: /* already sent the entire request body, mark the "upload" as
! 3069: complete */
! 3070: infof(data, "upload completely sent off: %" CURL_FORMAT_CURL_OFF_T
! 3071: " out of %" CURL_FORMAT_CURL_OFF_T " bytes\n",
! 3072: data->req.writebytecount, postsize);
! 3073: data->req.upload_done = TRUE;
! 3074: data->req.keepon &= ~KEEP_SEND; /* we're done writing */
! 3075: data->req.exp100 = EXP100_SEND_DATA; /* already sent */
! 3076: Curl_expire_done(data, EXPIRE_100_TIMEOUT);
! 3077: }
! 3078: }
! 3079:
! 3080: if((conn->httpversion == 20) && data->req.upload_chunky)
! 3081: /* upload_chunky was set above to set up the request in a chunky fashion,
! 3082: but is disabled here again to avoid that the chunked encoded version is
! 3083: actually used when sending the request body over h2 */
! 3084: data->req.upload_chunky = FALSE;
! 3085: return result;
! 3086: }
! 3087:
! 3088: typedef enum {
! 3089: STATUS_UNKNOWN, /* not enough data to tell yet */
! 3090: STATUS_DONE, /* a status line was read */
! 3091: STATUS_BAD /* not a status line */
! 3092: } statusline;
! 3093:
! 3094:
! 3095: /* Check a string for a prefix. Check no more than 'len' bytes */
! 3096: static bool checkprefixmax(const char *prefix, const char *buffer, size_t len)
! 3097: {
! 3098: size_t ch = CURLMIN(strlen(prefix), len);
! 3099: return curl_strnequal(prefix, buffer, ch);
! 3100: }
! 3101:
! 3102: /*
! 3103: * checkhttpprefix()
! 3104: *
! 3105: * Returns TRUE if member of the list matches prefix of string
! 3106: */
! 3107: static statusline
! 3108: checkhttpprefix(struct Curl_easy *data,
! 3109: const char *s, size_t len)
! 3110: {
! 3111: struct curl_slist *head = data->set.http200aliases;
! 3112: statusline rc = STATUS_BAD;
! 3113: statusline onmatch = len >= 5? STATUS_DONE : STATUS_UNKNOWN;
! 3114: #ifdef CURL_DOES_CONVERSIONS
! 3115: /* convert from the network encoding using a scratch area */
! 3116: char *scratch = strdup(s);
! 3117: if(NULL == scratch) {
! 3118: failf(data, "Failed to allocate memory for conversion!");
! 3119: return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
! 3120: }
! 3121: if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s) + 1)) {
! 3122: /* Curl_convert_from_network calls failf if unsuccessful */
! 3123: free(scratch);
! 3124: return FALSE; /* can't return CURLE_foobar so return FALSE */
! 3125: }
! 3126: s = scratch;
! 3127: #endif /* CURL_DOES_CONVERSIONS */
! 3128:
! 3129: while(head) {
! 3130: if(checkprefixmax(head->data, s, len)) {
! 3131: rc = onmatch;
! 3132: break;
! 3133: }
! 3134: head = head->next;
! 3135: }
! 3136:
! 3137: if((rc != STATUS_DONE) && (checkprefixmax("HTTP/", s, len)))
! 3138: rc = onmatch;
! 3139:
! 3140: #ifdef CURL_DOES_CONVERSIONS
! 3141: free(scratch);
! 3142: #endif /* CURL_DOES_CONVERSIONS */
! 3143: return rc;
! 3144: }
! 3145:
! 3146: #ifndef CURL_DISABLE_RTSP
! 3147: static statusline
! 3148: checkrtspprefix(struct Curl_easy *data,
! 3149: const char *s, size_t len)
! 3150: {
! 3151: statusline result = STATUS_BAD;
! 3152: statusline onmatch = len >= 5? STATUS_DONE : STATUS_UNKNOWN;
! 3153:
! 3154: #ifdef CURL_DOES_CONVERSIONS
! 3155: /* convert from the network encoding using a scratch area */
! 3156: char *scratch = strdup(s);
! 3157: if(NULL == scratch) {
! 3158: failf(data, "Failed to allocate memory for conversion!");
! 3159: return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
! 3160: }
! 3161: if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s) + 1)) {
! 3162: /* Curl_convert_from_network calls failf if unsuccessful */
! 3163: result = FALSE; /* can't return CURLE_foobar so return FALSE */
! 3164: }
! 3165: else if(checkprefixmax("RTSP/", scratch, len))
! 3166: result = onmatch;
! 3167: free(scratch);
! 3168: #else
! 3169: (void)data; /* unused */
! 3170: if(checkprefixmax("RTSP/", s, len))
! 3171: result = onmatch;
! 3172: #endif /* CURL_DOES_CONVERSIONS */
! 3173:
! 3174: return result;
! 3175: }
! 3176: #endif /* CURL_DISABLE_RTSP */
! 3177:
! 3178: static statusline
! 3179: checkprotoprefix(struct Curl_easy *data, struct connectdata *conn,
! 3180: const char *s, size_t len)
! 3181: {
! 3182: #ifndef CURL_DISABLE_RTSP
! 3183: if(conn->handler->protocol & CURLPROTO_RTSP)
! 3184: return checkrtspprefix(data, s, len);
! 3185: #else
! 3186: (void)conn;
! 3187: #endif /* CURL_DISABLE_RTSP */
! 3188:
! 3189: return checkhttpprefix(data, s, len);
! 3190: }
! 3191:
! 3192: /*
! 3193: * header_append() copies a chunk of data to the end of the already received
! 3194: * header. We make sure that the full string fit in the allocated header
! 3195: * buffer, or else we enlarge it.
! 3196: */
! 3197: static CURLcode header_append(struct Curl_easy *data,
! 3198: struct SingleRequest *k,
! 3199: size_t length)
! 3200: {
! 3201: /* length is at most the size of a full read buffer, for which the upper
! 3202: bound is CURL_MAX_READ_SIZE. There is thus no chance of overflow in this
! 3203: calculation. */
! 3204: size_t newsize = k->hbuflen + length;
! 3205: if(newsize > CURL_MAX_HTTP_HEADER) {
! 3206: /* The reason to have a max limit for this is to avoid the risk of a bad
! 3207: server feeding libcurl with a never-ending header that will cause
! 3208: reallocs infinitely */
! 3209: failf(data, "Rejected %zu bytes header (max is %d)!", newsize,
! 3210: CURL_MAX_HTTP_HEADER);
! 3211: return CURLE_OUT_OF_MEMORY;
! 3212: }
! 3213: if(newsize >= data->state.headersize) {
! 3214: /* We enlarge the header buffer as it is too small */
! 3215: char *newbuff;
! 3216: size_t hbufp_index;
! 3217:
! 3218: newsize = CURLMAX((k->hbuflen + length) * 3 / 2, data->state.headersize*2);
! 3219: hbufp_index = k->hbufp - data->state.headerbuff;
! 3220: newbuff = realloc(data->state.headerbuff, newsize);
! 3221: if(!newbuff) {
! 3222: failf(data, "Failed to alloc memory for big header!");
! 3223: return CURLE_OUT_OF_MEMORY;
! 3224: }
! 3225: data->state.headersize = newsize;
! 3226: data->state.headerbuff = newbuff;
! 3227: k->hbufp = data->state.headerbuff + hbufp_index;
! 3228: }
! 3229: memcpy(k->hbufp, k->str_start, length);
! 3230: k->hbufp += length;
! 3231: k->hbuflen += length;
! 3232: *k->hbufp = 0;
! 3233:
! 3234: return CURLE_OK;
! 3235: }
! 3236:
! 3237: static void print_http_error(struct Curl_easy *data)
! 3238: {
! 3239: struct SingleRequest *k = &data->req;
! 3240: char *beg = k->p;
! 3241:
! 3242: /* make sure that data->req.p points to the HTTP status line */
! 3243: if(!strncmp(beg, "HTTP", 4)) {
! 3244:
! 3245: /* skip to HTTP status code */
! 3246: beg = strchr(beg, ' ');
! 3247: if(beg && *++beg) {
! 3248:
! 3249: /* find trailing CR */
! 3250: char end_char = '\r';
! 3251: char *end = strchr(beg, end_char);
! 3252: if(!end) {
! 3253: /* try to find LF (workaround for non-compliant HTTP servers) */
! 3254: end_char = '\n';
! 3255: end = strchr(beg, end_char);
! 3256: }
! 3257:
! 3258: if(end) {
! 3259: /* temporarily replace CR or LF by NUL and print the error message */
! 3260: *end = '\0';
! 3261: failf(data, "The requested URL returned error: %s", beg);
! 3262:
! 3263: /* restore the previously replaced CR or LF */
! 3264: *end = end_char;
! 3265: return;
! 3266: }
! 3267: }
! 3268: }
! 3269:
! 3270: /* fall-back to printing the HTTP status code only */
! 3271: failf(data, "The requested URL returned error: %d", k->httpcode);
! 3272: }
! 3273:
! 3274: /*
! 3275: * Read any HTTP header lines from the server and pass them to the client app.
! 3276: */
! 3277: CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
! 3278: struct connectdata *conn,
! 3279: ssize_t *nread,
! 3280: bool *stop_reading)
! 3281: {
! 3282: CURLcode result;
! 3283: struct SingleRequest *k = &data->req;
! 3284: ssize_t onread = *nread;
! 3285: char *ostr = k->str;
! 3286:
! 3287: /* header line within buffer loop */
! 3288: do {
! 3289: size_t rest_length;
! 3290: size_t full_length;
! 3291: int writetype;
! 3292:
! 3293: /* str_start is start of line within buf */
! 3294: k->str_start = k->str;
! 3295:
! 3296: /* data is in network encoding so use 0x0a instead of '\n' */
! 3297: k->end_ptr = memchr(k->str_start, 0x0a, *nread);
! 3298:
! 3299: if(!k->end_ptr) {
! 3300: /* Not a complete header line within buffer, append the data to
! 3301: the end of the headerbuff. */
! 3302: result = header_append(data, k, *nread);
! 3303: if(result)
! 3304: return result;
! 3305:
! 3306: if(!k->headerline) {
! 3307: /* check if this looks like a protocol header */
! 3308: statusline st = checkprotoprefix(data, conn, data->state.headerbuff,
! 3309: k->hbuflen);
! 3310: if(st == STATUS_BAD) {
! 3311: /* this is not the beginning of a protocol first header line */
! 3312: k->header = FALSE;
! 3313: k->badheader = HEADER_ALLBAD;
! 3314: streamclose(conn, "bad HTTP: No end-of-message indicator");
! 3315: if(!data->set.http09_allowed) {
! 3316: failf(data, "Received HTTP/0.9 when not allowed\n");
! 3317: return CURLE_UNSUPPORTED_PROTOCOL;
! 3318: }
! 3319: break;
! 3320: }
! 3321: }
! 3322:
! 3323: break; /* read more and try again */
! 3324: }
! 3325:
! 3326: /* decrease the size of the remaining (supposed) header line */
! 3327: rest_length = (k->end_ptr - k->str) + 1;
! 3328: *nread -= (ssize_t)rest_length;
! 3329:
! 3330: k->str = k->end_ptr + 1; /* move past new line */
! 3331:
! 3332: full_length = k->str - k->str_start;
! 3333:
! 3334: result = header_append(data, k, full_length);
! 3335: if(result)
! 3336: return result;
! 3337:
! 3338: k->end_ptr = k->hbufp;
! 3339: k->p = data->state.headerbuff;
! 3340:
! 3341: /****
! 3342: * We now have a FULL header line that p points to
! 3343: *****/
! 3344:
! 3345: if(!k->headerline) {
! 3346: /* the first read header */
! 3347: statusline st = checkprotoprefix(data, conn, data->state.headerbuff,
! 3348: k->hbuflen);
! 3349: if(st == STATUS_BAD) {
! 3350: streamclose(conn, "bad HTTP: No end-of-message indicator");
! 3351: /* this is not the beginning of a protocol first header line */
! 3352: if(!data->set.http09_allowed) {
! 3353: failf(data, "Received HTTP/0.9 when not allowed\n");
! 3354: return CURLE_UNSUPPORTED_PROTOCOL;
! 3355: }
! 3356: k->header = FALSE;
! 3357: if(*nread)
! 3358: /* since there's more, this is a partial bad header */
! 3359: k->badheader = HEADER_PARTHEADER;
! 3360: else {
! 3361: /* this was all we read so it's all a bad header */
! 3362: k->badheader = HEADER_ALLBAD;
! 3363: *nread = onread;
! 3364: k->str = ostr;
! 3365: return CURLE_OK;
! 3366: }
! 3367: break;
! 3368: }
! 3369: }
! 3370:
! 3371: /* headers are in network encoding so
! 3372: use 0x0a and 0x0d instead of '\n' and '\r' */
! 3373: if((0x0a == *k->p) || (0x0d == *k->p)) {
! 3374: size_t headerlen;
! 3375: /* Zero-length header line means end of headers! */
! 3376:
! 3377: #ifdef CURL_DOES_CONVERSIONS
! 3378: if(0x0d == *k->p) {
! 3379: *k->p = '\r'; /* replace with CR in host encoding */
! 3380: k->p++; /* pass the CR byte */
! 3381: }
! 3382: if(0x0a == *k->p) {
! 3383: *k->p = '\n'; /* replace with LF in host encoding */
! 3384: k->p++; /* pass the LF byte */
! 3385: }
! 3386: #else
! 3387: if('\r' == *k->p)
! 3388: k->p++; /* pass the \r byte */
! 3389: if('\n' == *k->p)
! 3390: k->p++; /* pass the \n byte */
! 3391: #endif /* CURL_DOES_CONVERSIONS */
! 3392:
! 3393: if(100 <= k->httpcode && 199 >= k->httpcode) {
! 3394: /* "A user agent MAY ignore unexpected 1xx status responses." */
! 3395: switch(k->httpcode) {
! 3396: case 100:
! 3397: /*
! 3398: * We have made a HTTP PUT or POST and this is 1.1-lingo
! 3399: * that tells us that the server is OK with this and ready
! 3400: * to receive the data.
! 3401: * However, we'll get more headers now so we must get
! 3402: * back into the header-parsing state!
! 3403: */
! 3404: k->header = TRUE;
! 3405: k->headerline = 0; /* restart the header line counter */
! 3406:
! 3407: /* if we did wait for this do enable write now! */
! 3408: if(k->exp100 > EXP100_SEND_DATA) {
! 3409: k->exp100 = EXP100_SEND_DATA;
! 3410: k->keepon |= KEEP_SEND;
! 3411: Curl_expire_done(data, EXPIRE_100_TIMEOUT);
! 3412: }
! 3413: break;
! 3414: case 101:
! 3415: /* Switching Protocols */
! 3416: if(k->upgr101 == UPGR101_REQUESTED) {
! 3417: /* Switching to HTTP/2 */
! 3418: infof(data, "Received 101\n");
! 3419: k->upgr101 = UPGR101_RECEIVED;
! 3420:
! 3421: /* we'll get more headers (HTTP/2 response) */
! 3422: k->header = TRUE;
! 3423: k->headerline = 0; /* restart the header line counter */
! 3424:
! 3425: /* switch to http2 now. The bytes after response headers
! 3426: are also processed here, otherwise they are lost. */
! 3427: result = Curl_http2_switched(conn, k->str, *nread);
! 3428: if(result)
! 3429: return result;
! 3430: *nread = 0;
! 3431: }
! 3432: else {
! 3433: /* Switching to another protocol (e.g. WebSocket) */
! 3434: k->header = FALSE; /* no more header to parse! */
! 3435: }
! 3436: break;
! 3437: default:
! 3438: /* the status code 1xx indicates a provisional response, so
! 3439: we'll get another set of headers */
! 3440: k->header = TRUE;
! 3441: k->headerline = 0; /* restart the header line counter */
! 3442: break;
! 3443: }
! 3444: }
! 3445: else {
! 3446: k->header = FALSE; /* no more header to parse! */
! 3447:
! 3448: if((k->size == -1) && !k->chunk && !conn->bits.close &&
! 3449: (conn->httpversion == 11) &&
! 3450: !(conn->handler->protocol & CURLPROTO_RTSP) &&
! 3451: data->set.httpreq != HTTPREQ_HEAD) {
! 3452: /* On HTTP 1.1, when connection is not to get closed, but no
! 3453: Content-Length nor Transfer-Encoding chunked have been
! 3454: received, according to RFC2616 section 4.4 point 5, we
! 3455: assume that the server will close the connection to
! 3456: signal the end of the document. */
! 3457: infof(data, "no chunk, no close, no size. Assume close to "
! 3458: "signal end\n");
! 3459: streamclose(conn, "HTTP: No end-of-message indicator");
! 3460: }
! 3461: }
! 3462:
! 3463: /* At this point we have some idea about the fate of the connection.
! 3464: If we are closing the connection it may result auth failure. */
! 3465: #if defined(USE_NTLM)
! 3466: if(conn->bits.close &&
! 3467: (((data->req.httpcode == 401) &&
! 3468: (conn->http_ntlm_state == NTLMSTATE_TYPE2)) ||
! 3469: ((data->req.httpcode == 407) &&
! 3470: (conn->proxy_ntlm_state == NTLMSTATE_TYPE2)))) {
! 3471: infof(data, "Connection closure while negotiating auth (HTTP 1.0?)\n");
! 3472: data->state.authproblem = TRUE;
! 3473: }
! 3474: #endif
! 3475: #if defined(USE_SPNEGO)
! 3476: if(conn->bits.close &&
! 3477: (((data->req.httpcode == 401) &&
! 3478: (conn->http_negotiate_state == GSS_AUTHRECV)) ||
! 3479: ((data->req.httpcode == 407) &&
! 3480: (conn->proxy_negotiate_state == GSS_AUTHRECV)))) {
! 3481: infof(data, "Connection closure while negotiating auth (HTTP 1.0?)\n");
! 3482: data->state.authproblem = TRUE;
! 3483: }
! 3484: if((conn->http_negotiate_state == GSS_AUTHDONE) &&
! 3485: (data->req.httpcode != 401)) {
! 3486: conn->http_negotiate_state = GSS_AUTHSUCC;
! 3487: }
! 3488: if((conn->proxy_negotiate_state == GSS_AUTHDONE) &&
! 3489: (data->req.httpcode != 407)) {
! 3490: conn->proxy_negotiate_state = GSS_AUTHSUCC;
! 3491: }
! 3492: #endif
! 3493: /*
! 3494: * When all the headers have been parsed, see if we should give
! 3495: * up and return an error.
! 3496: */
! 3497: if(http_should_fail(conn)) {
! 3498: failf(data, "The requested URL returned error: %d",
! 3499: k->httpcode);
! 3500: return CURLE_HTTP_RETURNED_ERROR;
! 3501: }
! 3502:
! 3503: /* now, only output this if the header AND body are requested:
! 3504: */
! 3505: writetype = CLIENTWRITE_HEADER;
! 3506: if(data->set.include_header)
! 3507: writetype |= CLIENTWRITE_BODY;
! 3508:
! 3509: headerlen = k->p - data->state.headerbuff;
! 3510:
! 3511: result = Curl_client_write(conn, writetype,
! 3512: data->state.headerbuff,
! 3513: headerlen);
! 3514: if(result)
! 3515: return result;
! 3516:
! 3517: data->info.header_size += (long)headerlen;
! 3518: data->req.headerbytecount += (long)headerlen;
! 3519:
! 3520: data->req.deductheadercount =
! 3521: (100 <= k->httpcode && 199 >= k->httpcode)?data->req.headerbytecount:0;
! 3522:
! 3523: /* Curl_http_auth_act() checks what authentication methods
! 3524: * that are available and decides which one (if any) to
! 3525: * use. It will set 'newurl' if an auth method was picked. */
! 3526: result = Curl_http_auth_act(conn);
! 3527:
! 3528: if(result)
! 3529: return result;
! 3530:
! 3531: if(k->httpcode >= 300) {
! 3532: if((!conn->bits.authneg) && !conn->bits.close &&
! 3533: !conn->bits.rewindaftersend) {
! 3534: /*
! 3535: * General treatment of errors when about to send data. Including :
! 3536: * "417 Expectation Failed", while waiting for 100-continue.
! 3537: *
! 3538: * The check for close above is done simply because of something
! 3539: * else has already deemed the connection to get closed then
! 3540: * something else should've considered the big picture and we
! 3541: * avoid this check.
! 3542: *
! 3543: * rewindaftersend indicates that something has told libcurl to
! 3544: * continue sending even if it gets discarded
! 3545: */
! 3546:
! 3547: switch(data->set.httpreq) {
! 3548: case HTTPREQ_PUT:
! 3549: case HTTPREQ_POST:
! 3550: case HTTPREQ_POST_FORM:
! 3551: case HTTPREQ_POST_MIME:
! 3552: /* We got an error response. If this happened before the whole
! 3553: * request body has been sent we stop sending and mark the
! 3554: * connection for closure after we've read the entire response.
! 3555: */
! 3556: Curl_expire_done(data, EXPIRE_100_TIMEOUT);
! 3557: if(!k->upload_done) {
! 3558: if((k->httpcode == 417) && data->state.expect100header) {
! 3559: /* 417 Expectation Failed - try again without the Expect
! 3560: header */
! 3561: infof(data, "Got 417 while waiting for a 100\n");
! 3562: data->state.disableexpect = TRUE;
! 3563: DEBUGASSERT(!data->req.newurl);
! 3564: data->req.newurl = strdup(conn->data->change.url);
! 3565: Curl_done_sending(conn, k);
! 3566: }
! 3567: else if(data->set.http_keep_sending_on_error) {
! 3568: infof(data, "HTTP error before end of send, keep sending\n");
! 3569: if(k->exp100 > EXP100_SEND_DATA) {
! 3570: k->exp100 = EXP100_SEND_DATA;
! 3571: k->keepon |= KEEP_SEND;
! 3572: }
! 3573: }
! 3574: else {
! 3575: infof(data, "HTTP error before end of send, stop sending\n");
! 3576: streamclose(conn, "Stop sending data before everything sent");
! 3577: result = Curl_done_sending(conn, k);
! 3578: if(result)
! 3579: return result;
! 3580: k->upload_done = TRUE;
! 3581: if(data->state.expect100header)
! 3582: k->exp100 = EXP100_FAILED;
! 3583: }
! 3584: }
! 3585: break;
! 3586:
! 3587: default: /* default label present to avoid compiler warnings */
! 3588: break;
! 3589: }
! 3590: }
! 3591:
! 3592: if(conn->bits.rewindaftersend) {
! 3593: /* We rewind after a complete send, so thus we continue
! 3594: sending now */
! 3595: infof(data, "Keep sending data to get tossed away!\n");
! 3596: k->keepon |= KEEP_SEND;
! 3597: }
! 3598: }
! 3599:
! 3600: if(!k->header) {
! 3601: /*
! 3602: * really end-of-headers.
! 3603: *
! 3604: * If we requested a "no body", this is a good time to get
! 3605: * out and return home.
! 3606: */
! 3607: if(data->set.opt_no_body)
! 3608: *stop_reading = TRUE;
! 3609: #ifndef CURL_DISABLE_RTSP
! 3610: else if((conn->handler->protocol & CURLPROTO_RTSP) &&
! 3611: (data->set.rtspreq == RTSPREQ_DESCRIBE) &&
! 3612: (k->size <= -1))
! 3613: /* Respect section 4.4 of rfc2326: If the Content-Length header is
! 3614: absent, a length 0 must be assumed. It will prevent libcurl from
! 3615: hanging on DESCRIBE request that got refused for whatever
! 3616: reason */
! 3617: *stop_reading = TRUE;
! 3618: #endif
! 3619: else {
! 3620: /* If we know the expected size of this document, we set the
! 3621: maximum download size to the size of the expected
! 3622: document or else, we won't know when to stop reading!
! 3623:
! 3624: Note that we set the download maximum even if we read a
! 3625: "Connection: close" header, to make sure that
! 3626: "Content-Length: 0" still prevents us from attempting to
! 3627: read the (missing) response-body.
! 3628: */
! 3629: /* According to RFC2616 section 4.4, we MUST ignore
! 3630: Content-Length: headers if we are now receiving data
! 3631: using chunked Transfer-Encoding.
! 3632: */
! 3633: if(k->chunk)
! 3634: k->maxdownload = k->size = -1;
! 3635: }
! 3636: if(-1 != k->size) {
! 3637: /* We do this operation even if no_body is true, since this
! 3638: data might be retrieved later with curl_easy_getinfo()
! 3639: and its CURLINFO_CONTENT_LENGTH_DOWNLOAD option. */
! 3640:
! 3641: Curl_pgrsSetDownloadSize(data, k->size);
! 3642: k->maxdownload = k->size;
! 3643: }
! 3644:
! 3645: /* If max download size is *zero* (nothing) we already have
! 3646: nothing and can safely return ok now! But for HTTP/2, we'd
! 3647: like to call http2_handle_stream_close to properly close a
! 3648: stream. In order to do this, we keep reading until we
! 3649: close the stream. */
! 3650: if(0 == k->maxdownload
! 3651: #if defined(USE_NGHTTP2)
! 3652: && !((conn->handler->protocol & PROTO_FAMILY_HTTP) &&
! 3653: conn->httpversion == 20)
! 3654: #endif
! 3655: )
! 3656: *stop_reading = TRUE;
! 3657:
! 3658: if(*stop_reading) {
! 3659: /* we make sure that this socket isn't read more now */
! 3660: k->keepon &= ~KEEP_RECV;
! 3661: }
! 3662:
! 3663: if(data->set.verbose)
! 3664: Curl_debug(data, CURLINFO_HEADER_IN,
! 3665: k->str_start, headerlen);
! 3666: break; /* exit header line loop */
! 3667: }
! 3668:
! 3669: /* We continue reading headers, so reset the line-based
! 3670: header parsing variables hbufp && hbuflen */
! 3671: k->hbufp = data->state.headerbuff;
! 3672: k->hbuflen = 0;
! 3673: continue;
! 3674: }
! 3675:
! 3676: /*
! 3677: * Checks for special headers coming up.
! 3678: */
! 3679:
! 3680: if(!k->headerline++) {
! 3681: /* This is the first header, it MUST be the error code line
! 3682: or else we consider this to be the body right away! */
! 3683: int httpversion_major;
! 3684: int rtspversion_major;
! 3685: int nc = 0;
! 3686: #ifdef CURL_DOES_CONVERSIONS
! 3687: #define HEADER1 scratch
! 3688: #define SCRATCHSIZE 21
! 3689: CURLcode res;
! 3690: char scratch[SCRATCHSIZE + 1]; /* "HTTP/major.minor 123" */
! 3691: /* We can't really convert this yet because we
! 3692: don't know if it's the 1st header line or the body.
! 3693: So we do a partial conversion into a scratch area,
! 3694: leaving the data at k->p as-is.
! 3695: */
! 3696: strncpy(&scratch[0], k->p, SCRATCHSIZE);
! 3697: scratch[SCRATCHSIZE] = 0; /* null terminate */
! 3698: res = Curl_convert_from_network(data,
! 3699: &scratch[0],
! 3700: SCRATCHSIZE);
! 3701: if(res)
! 3702: /* Curl_convert_from_network calls failf if unsuccessful */
! 3703: return res;
! 3704: #else
! 3705: #define HEADER1 k->p /* no conversion needed, just use k->p */
! 3706: #endif /* CURL_DOES_CONVERSIONS */
! 3707:
! 3708: if(conn->handler->protocol & PROTO_FAMILY_HTTP) {
! 3709: /*
! 3710: * https://tools.ietf.org/html/rfc7230#section-3.1.2
! 3711: *
! 3712: * The response code is always a three-digit number in HTTP as the spec
! 3713: * says. We try to allow any number here, but we cannot make
! 3714: * guarantees on future behaviors since it isn't within the protocol.
! 3715: */
! 3716: char separator;
! 3717: char twoorthree[2];
! 3718: nc = sscanf(HEADER1,
! 3719: " HTTP/%1d.%1d%c%3d",
! 3720: &httpversion_major,
! 3721: &conn->httpversion,
! 3722: &separator,
! 3723: &k->httpcode);
! 3724:
! 3725: if(nc == 1 && httpversion_major >= 2 &&
! 3726: 2 == sscanf(HEADER1, " HTTP/%1[23] %d", twoorthree, &k->httpcode)) {
! 3727: conn->httpversion = 0;
! 3728: nc = 4;
! 3729: separator = ' ';
! 3730: }
! 3731:
! 3732: if((nc == 4) && (' ' == separator)) {
! 3733: conn->httpversion += 10 * httpversion_major;
! 3734:
! 3735: if(k->upgr101 == UPGR101_RECEIVED) {
! 3736: /* supposedly upgraded to http2 now */
! 3737: if(conn->httpversion != 20)
! 3738: infof(data, "Lying server, not serving HTTP/2\n");
! 3739: }
! 3740: if(conn->httpversion < 20) {
! 3741: conn->bundle->multiuse = BUNDLE_NO_MULTIUSE;
! 3742: infof(data, "Mark bundle as not supporting multiuse\n");
! 3743: }
! 3744: }
! 3745: else if(!nc) {
! 3746: /* this is the real world, not a Nirvana
! 3747: NCSA 1.5.x returns this crap when asked for HTTP/1.1
! 3748: */
! 3749: nc = sscanf(HEADER1, " HTTP %3d", &k->httpcode);
! 3750: conn->httpversion = 10;
! 3751:
! 3752: /* If user has set option HTTP200ALIASES,
! 3753: compare header line against list of aliases
! 3754: */
! 3755: if(!nc) {
! 3756: if(checkhttpprefix(data, k->p, k->hbuflen) == STATUS_DONE) {
! 3757: nc = 1;
! 3758: k->httpcode = 200;
! 3759: conn->httpversion = 10;
! 3760: }
! 3761: }
! 3762: }
! 3763: else {
! 3764: failf(data, "Unsupported HTTP version in response");
! 3765: return CURLE_UNSUPPORTED_PROTOCOL;
! 3766: }
! 3767: }
! 3768: else if(conn->handler->protocol & CURLPROTO_RTSP) {
! 3769: char separator;
! 3770: nc = sscanf(HEADER1,
! 3771: " RTSP/%1d.%1d%c%3d",
! 3772: &rtspversion_major,
! 3773: &conn->rtspversion,
! 3774: &separator,
! 3775: &k->httpcode);
! 3776: if((nc == 4) && (' ' == separator)) {
! 3777: conn->rtspversion += 10 * rtspversion_major;
! 3778: conn->httpversion = 11; /* For us, RTSP acts like HTTP 1.1 */
! 3779: }
! 3780: else {
! 3781: nc = 0;
! 3782: }
! 3783: }
! 3784:
! 3785: if(nc) {
! 3786: data->info.httpcode = k->httpcode;
! 3787:
! 3788: data->info.httpversion = conn->httpversion;
! 3789: if(!data->state.httpversion ||
! 3790: data->state.httpversion > conn->httpversion)
! 3791: /* store the lowest server version we encounter */
! 3792: data->state.httpversion = conn->httpversion;
! 3793:
! 3794: /*
! 3795: * This code executes as part of processing the header. As a
! 3796: * result, it's not totally clear how to interpret the
! 3797: * response code yet as that depends on what other headers may
! 3798: * be present. 401 and 407 may be errors, but may be OK
! 3799: * depending on how authentication is working. Other codes
! 3800: * are definitely errors, so give up here.
! 3801: */
! 3802: if(data->state.resume_from && data->set.httpreq == HTTPREQ_GET &&
! 3803: k->httpcode == 416) {
! 3804: /* "Requested Range Not Satisfiable", just proceed and
! 3805: pretend this is no error */
! 3806: k->ignorebody = TRUE; /* Avoid appending error msg to good data. */
! 3807: }
! 3808: else if(data->set.http_fail_on_error && (k->httpcode >= 400) &&
! 3809: ((k->httpcode != 401) || !conn->bits.user_passwd) &&
! 3810: ((k->httpcode != 407) || !conn->bits.proxy_user_passwd) ) {
! 3811: /* serious error, go home! */
! 3812: print_http_error(data);
! 3813: return CURLE_HTTP_RETURNED_ERROR;
! 3814: }
! 3815:
! 3816: if(conn->httpversion == 10) {
! 3817: /* Default action for HTTP/1.0 must be to close, unless
! 3818: we get one of those fancy headers that tell us the
! 3819: server keeps it open for us! */
! 3820: infof(data, "HTTP 1.0, assume close after body\n");
! 3821: connclose(conn, "HTTP/1.0 close after body");
! 3822: }
! 3823: else if(conn->httpversion == 20 ||
! 3824: (k->upgr101 == UPGR101_REQUESTED && k->httpcode == 101)) {
! 3825: DEBUGF(infof(data, "HTTP/2 found, allow multiplexing\n"));
! 3826:
! 3827: /* HTTP/2 cannot blacklist multiplexing since it is a core
! 3828: functionality of the protocol */
! 3829: conn->bundle->multiuse = BUNDLE_MULTIPLEX;
! 3830: }
! 3831: else if(conn->httpversion >= 11 &&
! 3832: !conn->bits.close) {
! 3833: /* If HTTP version is >= 1.1 and connection is persistent */
! 3834: DEBUGF(infof(data,
! 3835: "HTTP 1.1 or later with persistent connection\n"));
! 3836: }
! 3837:
! 3838: k->http_bodyless = k->httpcode >= 100 && k->httpcode < 200;
! 3839: switch(k->httpcode) {
! 3840: case 304:
! 3841: /* (quote from RFC2616, section 10.3.5): The 304 response
! 3842: * MUST NOT contain a message-body, and thus is always
! 3843: * terminated by the first empty line after the header
! 3844: * fields. */
! 3845: if(data->set.timecondition)
! 3846: data->info.timecond = TRUE;
! 3847: /* FALLTHROUGH */
! 3848: case 204:
! 3849: /* (quote from RFC2616, section 10.2.5): The server has
! 3850: * fulfilled the request but does not need to return an
! 3851: * entity-body ... The 204 response MUST NOT include a
! 3852: * message-body, and thus is always terminated by the first
! 3853: * empty line after the header fields. */
! 3854: k->size = 0;
! 3855: k->maxdownload = 0;
! 3856: k->http_bodyless = TRUE;
! 3857: break;
! 3858: default:
! 3859: break;
! 3860: }
! 3861: }
! 3862: else {
! 3863: k->header = FALSE; /* this is not a header line */
! 3864: break;
! 3865: }
! 3866: }
! 3867:
! 3868: result = Curl_convert_from_network(data, k->p, strlen(k->p));
! 3869: /* Curl_convert_from_network calls failf if unsuccessful */
! 3870: if(result)
! 3871: return result;
! 3872:
! 3873: /* Check for Content-Length: header lines to get size */
! 3874: if(!k->http_bodyless &&
! 3875: !data->set.ignorecl && checkprefix("Content-Length:", k->p)) {
! 3876: curl_off_t contentlength;
! 3877: CURLofft offt = curlx_strtoofft(k->p + 15, NULL, 10, &contentlength);
! 3878:
! 3879: if(offt == CURL_OFFT_OK) {
! 3880: if(data->set.max_filesize &&
! 3881: contentlength > data->set.max_filesize) {
! 3882: failf(data, "Maximum file size exceeded");
! 3883: return CURLE_FILESIZE_EXCEEDED;
! 3884: }
! 3885: k->size = contentlength;
! 3886: k->maxdownload = k->size;
! 3887: /* we set the progress download size already at this point
! 3888: just to make it easier for apps/callbacks to extract this
! 3889: info as soon as possible */
! 3890: Curl_pgrsSetDownloadSize(data, k->size);
! 3891: }
! 3892: else if(offt == CURL_OFFT_FLOW) {
! 3893: /* out of range */
! 3894: if(data->set.max_filesize) {
! 3895: failf(data, "Maximum file size exceeded");
! 3896: return CURLE_FILESIZE_EXCEEDED;
! 3897: }
! 3898: streamclose(conn, "overflow content-length");
! 3899: infof(data, "Overflow Content-Length: value!\n");
! 3900: }
! 3901: else {
! 3902: /* negative or just rubbish - bad HTTP */
! 3903: failf(data, "Invalid Content-Length: value");
! 3904: return CURLE_WEIRD_SERVER_REPLY;
! 3905: }
! 3906: }
! 3907: /* check for Content-Type: header lines to get the MIME-type */
! 3908: else if(checkprefix("Content-Type:", k->p)) {
! 3909: char *contenttype = Curl_copy_header_value(k->p);
! 3910: if(!contenttype)
! 3911: return CURLE_OUT_OF_MEMORY;
! 3912: if(!*contenttype)
! 3913: /* ignore empty data */
! 3914: free(contenttype);
! 3915: else {
! 3916: Curl_safefree(data->info.contenttype);
! 3917: data->info.contenttype = contenttype;
! 3918: }
! 3919: }
! 3920: else if((conn->httpversion == 10) &&
! 3921: conn->bits.httpproxy &&
! 3922: Curl_compareheader(k->p,
! 3923: "Proxy-Connection:", "keep-alive")) {
! 3924: /*
! 3925: * When a HTTP/1.0 reply comes when using a proxy, the
! 3926: * 'Proxy-Connection: keep-alive' line tells us the
! 3927: * connection will be kept alive for our pleasure.
! 3928: * Default action for 1.0 is to close.
! 3929: */
! 3930: connkeep(conn, "Proxy-Connection keep-alive"); /* don't close */
! 3931: infof(data, "HTTP/1.0 proxy connection set to keep alive!\n");
! 3932: }
! 3933: else if((conn->httpversion == 11) &&
! 3934: conn->bits.httpproxy &&
! 3935: Curl_compareheader(k->p,
! 3936: "Proxy-Connection:", "close")) {
! 3937: /*
! 3938: * We get a HTTP/1.1 response from a proxy and it says it'll
! 3939: * close down after this transfer.
! 3940: */
! 3941: connclose(conn, "Proxy-Connection: asked to close after done");
! 3942: infof(data, "HTTP/1.1 proxy connection set close!\n");
! 3943: }
! 3944: else if((conn->httpversion == 10) &&
! 3945: Curl_compareheader(k->p, "Connection:", "keep-alive")) {
! 3946: /*
! 3947: * A HTTP/1.0 reply with the 'Connection: keep-alive' line
! 3948: * tells us the connection will be kept alive for our
! 3949: * pleasure. Default action for 1.0 is to close.
! 3950: *
! 3951: * [RFC2068, section 19.7.1] */
! 3952: connkeep(conn, "Connection keep-alive");
! 3953: infof(data, "HTTP/1.0 connection set to keep alive!\n");
! 3954: }
! 3955: else if(Curl_compareheader(k->p, "Connection:", "close")) {
! 3956: /*
! 3957: * [RFC 2616, section 8.1.2.1]
! 3958: * "Connection: close" is HTTP/1.1 language and means that
! 3959: * the connection will close when this request has been
! 3960: * served.
! 3961: */
! 3962: streamclose(conn, "Connection: close used");
! 3963: }
! 3964: else if(!k->http_bodyless && checkprefix("Transfer-Encoding:", k->p)) {
! 3965: /* One or more encodings. We check for chunked and/or a compression
! 3966: algorithm. */
! 3967: /*
! 3968: * [RFC 2616, section 3.6.1] A 'chunked' transfer encoding
! 3969: * means that the server will send a series of "chunks". Each
! 3970: * chunk starts with line with info (including size of the
! 3971: * coming block) (terminated with CRLF), then a block of data
! 3972: * with the previously mentioned size. There can be any amount
! 3973: * of chunks, and a chunk-data set to zero signals the
! 3974: * end-of-chunks. */
! 3975:
! 3976: result = Curl_build_unencoding_stack(conn, k->p + 18, TRUE);
! 3977: if(result)
! 3978: return result;
! 3979: }
! 3980: else if(!k->http_bodyless && checkprefix("Content-Encoding:", k->p) &&
! 3981: data->set.str[STRING_ENCODING]) {
! 3982: /*
! 3983: * Process Content-Encoding. Look for the values: identity,
! 3984: * gzip, deflate, compress, x-gzip and x-compress. x-gzip and
! 3985: * x-compress are the same as gzip and compress. (Sec 3.5 RFC
! 3986: * 2616). zlib cannot handle compress. However, errors are
! 3987: * handled further down when the response body is processed
! 3988: */
! 3989: result = Curl_build_unencoding_stack(conn, k->p + 17, FALSE);
! 3990: if(result)
! 3991: return result;
! 3992: }
! 3993: else if(checkprefix("Retry-After:", k->p)) {
! 3994: /* Retry-After = HTTP-date / delay-seconds */
! 3995: curl_off_t retry_after = 0; /* zero for unknown or "now" */
! 3996: time_t date = Curl_getdate_capped(&k->p[12]);
! 3997: if(-1 == date) {
! 3998: /* not a date, try it as a decimal number */
! 3999: (void)curlx_strtoofft(&k->p[12], NULL, 10, &retry_after);
! 4000: }
! 4001: else
! 4002: /* convert date to number of seconds into the future */
! 4003: retry_after = date - time(NULL);
! 4004: data->info.retry_after = retry_after; /* store it */
! 4005: }
! 4006: else if(!k->http_bodyless && checkprefix("Content-Range:", k->p)) {
! 4007: /* Content-Range: bytes [num]-
! 4008: Content-Range: bytes: [num]-
! 4009: Content-Range: [num]-
! 4010: Content-Range: [asterisk]/[total]
! 4011:
! 4012: The second format was added since Sun's webserver
! 4013: JavaWebServer/1.1.1 obviously sends the header this way!
! 4014: The third added since some servers use that!
! 4015: The forth means the requested range was unsatisfied.
! 4016: */
! 4017:
! 4018: char *ptr = k->p + 14;
! 4019:
! 4020: /* Move forward until first digit or asterisk */
! 4021: while(*ptr && !ISDIGIT(*ptr) && *ptr != '*')
! 4022: ptr++;
! 4023:
! 4024: /* if it truly stopped on a digit */
! 4025: if(ISDIGIT(*ptr)) {
! 4026: if(!curlx_strtoofft(ptr, NULL, 10, &k->offset)) {
! 4027: if(data->state.resume_from == k->offset)
! 4028: /* we asked for a resume and we got it */
! 4029: k->content_range = TRUE;
! 4030: }
! 4031: }
! 4032: else
! 4033: data->state.resume_from = 0; /* get everything */
! 4034: }
! 4035: #if !defined(CURL_DISABLE_COOKIES)
! 4036: else if(data->cookies && data->state.cookie_engine &&
! 4037: checkprefix("Set-Cookie:", k->p)) {
! 4038: Curl_share_lock(data, CURL_LOCK_DATA_COOKIE,
! 4039: CURL_LOCK_ACCESS_SINGLE);
! 4040: Curl_cookie_add(data,
! 4041: data->cookies, TRUE, FALSE, k->p + 11,
! 4042: /* If there is a custom-set Host: name, use it
! 4043: here, or else use real peer host name. */
! 4044: conn->allocptr.cookiehost?
! 4045: conn->allocptr.cookiehost:conn->host.name,
! 4046: data->state.up.path,
! 4047: (conn->handler->protocol&CURLPROTO_HTTPS)?
! 4048: TRUE:FALSE);
! 4049: Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
! 4050: }
! 4051: #endif
! 4052: else if(!k->http_bodyless && checkprefix("Last-Modified:", k->p) &&
! 4053: (data->set.timecondition || data->set.get_filetime) ) {
! 4054: k->timeofdoc = Curl_getdate_capped(k->p + strlen("Last-Modified:"));
! 4055: if(data->set.get_filetime)
! 4056: data->info.filetime = k->timeofdoc;
! 4057: }
! 4058: else if((checkprefix("WWW-Authenticate:", k->p) &&
! 4059: (401 == k->httpcode)) ||
! 4060: (checkprefix("Proxy-authenticate:", k->p) &&
! 4061: (407 == k->httpcode))) {
! 4062:
! 4063: bool proxy = (k->httpcode == 407) ? TRUE : FALSE;
! 4064: char *auth = Curl_copy_header_value(k->p);
! 4065: if(!auth)
! 4066: return CURLE_OUT_OF_MEMORY;
! 4067:
! 4068: result = Curl_http_input_auth(conn, proxy, auth);
! 4069:
! 4070: free(auth);
! 4071:
! 4072: if(result)
! 4073: return result;
! 4074: }
! 4075: #ifdef USE_SPNEGO
! 4076: else if(checkprefix("Persistent-Auth", k->p)) {
! 4077: struct negotiatedata *negdata = &conn->negotiate;
! 4078: struct auth *authp = &data->state.authhost;
! 4079: if(authp->picked == CURLAUTH_NEGOTIATE) {
! 4080: char *persistentauth = Curl_copy_header_value(k->p);
! 4081: if(!persistentauth)
! 4082: return CURLE_OUT_OF_MEMORY;
! 4083: negdata->noauthpersist = checkprefix("false", persistentauth)?
! 4084: TRUE:FALSE;
! 4085: negdata->havenoauthpersist = TRUE;
! 4086: infof(data, "Negotiate: noauthpersist -> %d, header part: %s",
! 4087: negdata->noauthpersist, persistentauth);
! 4088: free(persistentauth);
! 4089: }
! 4090: }
! 4091: #endif
! 4092: else if((k->httpcode >= 300 && k->httpcode < 400) &&
! 4093: checkprefix("Location:", k->p) &&
! 4094: !data->req.location) {
! 4095: /* this is the URL that the server advises us to use instead */
! 4096: char *location = Curl_copy_header_value(k->p);
! 4097: if(!location)
! 4098: return CURLE_OUT_OF_MEMORY;
! 4099: if(!*location)
! 4100: /* ignore empty data */
! 4101: free(location);
! 4102: else {
! 4103: data->req.location = location;
! 4104:
! 4105: if(data->set.http_follow_location) {
! 4106: DEBUGASSERT(!data->req.newurl);
! 4107: data->req.newurl = strdup(data->req.location); /* clone */
! 4108: if(!data->req.newurl)
! 4109: return CURLE_OUT_OF_MEMORY;
! 4110:
! 4111: /* some cases of POST and PUT etc needs to rewind the data
! 4112: stream at this point */
! 4113: result = http_perhapsrewind(conn);
! 4114: if(result)
! 4115: return result;
! 4116: }
! 4117: }
! 4118: }
! 4119: #ifdef USE_ALTSVC
! 4120: /* If enabled, the header is incoming and this is over HTTPS */
! 4121: else if(data->asi && checkprefix("Alt-Svc:", k->p) &&
! 4122: ((conn->handler->flags & PROTOPT_SSL) ||
! 4123: #ifdef CURLDEBUG
! 4124: /* allow debug builds to circumvent the HTTPS restriction */
! 4125: getenv("CURL_ALTSVC_HTTP")
! 4126: #else
! 4127: 0
! 4128: #endif
! 4129: )) {
! 4130: /* the ALPN of the current request */
! 4131: enum alpnid id = (conn->httpversion == 20) ? ALPN_h2 : ALPN_h1;
! 4132: result = Curl_altsvc_parse(data, data->asi,
! 4133: &k->p[ strlen("Alt-Svc:") ],
! 4134: id, conn->host.name,
! 4135: curlx_uitous(conn->remote_port));
! 4136: if(result)
! 4137: return result;
! 4138: }
! 4139: #endif
! 4140: else if(conn->handler->protocol & CURLPROTO_RTSP) {
! 4141: result = Curl_rtsp_parseheader(conn, k->p);
! 4142: if(result)
! 4143: return result;
! 4144: }
! 4145:
! 4146: /*
! 4147: * End of header-checks. Write them to the client.
! 4148: */
! 4149:
! 4150: writetype = CLIENTWRITE_HEADER;
! 4151: if(data->set.include_header)
! 4152: writetype |= CLIENTWRITE_BODY;
! 4153:
! 4154: if(data->set.verbose)
! 4155: Curl_debug(data, CURLINFO_HEADER_IN, k->p, (size_t)k->hbuflen);
! 4156:
! 4157: result = Curl_client_write(conn, writetype, k->p, k->hbuflen);
! 4158: if(result)
! 4159: return result;
! 4160:
! 4161: data->info.header_size += (long)k->hbuflen;
! 4162: data->req.headerbytecount += (long)k->hbuflen;
! 4163:
! 4164: /* reset hbufp pointer && hbuflen */
! 4165: k->hbufp = data->state.headerbuff;
! 4166: k->hbuflen = 0;
! 4167: }
! 4168: while(*k->str); /* header line within buffer */
! 4169:
! 4170: /* We might have reached the end of the header part here, but
! 4171: there might be a non-header part left in the end of the read
! 4172: buffer. */
! 4173:
! 4174: return CURLE_OK;
! 4175: }
! 4176:
! 4177: #endif /* CURL_DISABLE_HTTP */
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