Annotation of embedaddon/curl/lib/dict.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_DICT
! 26:
! 27: #ifdef HAVE_NETINET_IN_H
! 28: #include <netinet/in.h>
! 29: #endif
! 30: #ifdef HAVE_NETDB_H
! 31: #include <netdb.h>
! 32: #endif
! 33: #ifdef HAVE_ARPA_INET_H
! 34: #include <arpa/inet.h>
! 35: #endif
! 36: #ifdef HAVE_NET_IF_H
! 37: #include <net/if.h>
! 38: #endif
! 39: #ifdef HAVE_SYS_IOCTL_H
! 40: #include <sys/ioctl.h>
! 41: #endif
! 42:
! 43: #ifdef HAVE_SYS_PARAM_H
! 44: #include <sys/param.h>
! 45: #endif
! 46:
! 47: #ifdef HAVE_SYS_SELECT_H
! 48: #include <sys/select.h>
! 49: #elif defined(HAVE_UNISTD_H)
! 50: #include <unistd.h>
! 51: #endif
! 52:
! 53: #include "urldata.h"
! 54: #include <curl/curl.h>
! 55: #include "transfer.h"
! 56: #include "sendf.h"
! 57: #include "escape.h"
! 58: #include "progress.h"
! 59: #include "dict.h"
! 60: #include "strcase.h"
! 61: #include "curl_memory.h"
! 62: /* The last #include file should be: */
! 63: #include "memdebug.h"
! 64:
! 65: /*
! 66: * Forward declarations.
! 67: */
! 68:
! 69: static CURLcode dict_do(struct connectdata *conn, bool *done);
! 70:
! 71: /*
! 72: * DICT protocol handler.
! 73: */
! 74:
! 75: const struct Curl_handler Curl_handler_dict = {
! 76: "DICT", /* scheme */
! 77: ZERO_NULL, /* setup_connection */
! 78: dict_do, /* do_it */
! 79: ZERO_NULL, /* done */
! 80: ZERO_NULL, /* do_more */
! 81: ZERO_NULL, /* connect_it */
! 82: ZERO_NULL, /* connecting */
! 83: ZERO_NULL, /* doing */
! 84: ZERO_NULL, /* proto_getsock */
! 85: ZERO_NULL, /* doing_getsock */
! 86: ZERO_NULL, /* domore_getsock */
! 87: ZERO_NULL, /* perform_getsock */
! 88: ZERO_NULL, /* disconnect */
! 89: ZERO_NULL, /* readwrite */
! 90: ZERO_NULL, /* connection_check */
! 91: PORT_DICT, /* defport */
! 92: CURLPROTO_DICT, /* protocol */
! 93: PROTOPT_NONE | PROTOPT_NOURLQUERY /* flags */
! 94: };
! 95:
! 96: static char *unescape_word(struct Curl_easy *data, const char *inputbuff)
! 97: {
! 98: char *newp = NULL;
! 99: char *dictp;
! 100: size_t len;
! 101:
! 102: CURLcode result = Curl_urldecode(data, inputbuff, 0, &newp, &len, FALSE);
! 103: if(!newp || result)
! 104: return NULL;
! 105:
! 106: dictp = malloc(len*2 + 1); /* add one for terminating zero */
! 107: if(dictp) {
! 108: char *ptr;
! 109: char ch;
! 110: int olen = 0;
! 111: /* According to RFC2229 section 2.2, these letters need to be escaped with
! 112: \[letter] */
! 113: for(ptr = newp;
! 114: (ch = *ptr) != 0;
! 115: ptr++) {
! 116: if((ch <= 32) || (ch == 127) ||
! 117: (ch == '\'') || (ch == '\"') || (ch == '\\')) {
! 118: dictp[olen++] = '\\';
! 119: }
! 120: dictp[olen++] = ch;
! 121: }
! 122: dictp[olen] = 0;
! 123: }
! 124: free(newp);
! 125: return dictp;
! 126: }
! 127:
! 128: static CURLcode dict_do(struct connectdata *conn, bool *done)
! 129: {
! 130: char *word;
! 131: char *eword;
! 132: char *ppath;
! 133: char *database = NULL;
! 134: char *strategy = NULL;
! 135: char *nthdef = NULL; /* This is not part of the protocol, but required
! 136: by RFC 2229 */
! 137: CURLcode result = CURLE_OK;
! 138: struct Curl_easy *data = conn->data;
! 139: curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
! 140:
! 141: char *path = data->state.up.path;
! 142:
! 143: *done = TRUE; /* unconditionally */
! 144:
! 145: if(conn->bits.user_passwd) {
! 146: /* AUTH is missing */
! 147: }
! 148:
! 149: if(strncasecompare(path, DICT_MATCH, sizeof(DICT_MATCH)-1) ||
! 150: strncasecompare(path, DICT_MATCH2, sizeof(DICT_MATCH2)-1) ||
! 151: strncasecompare(path, DICT_MATCH3, sizeof(DICT_MATCH3)-1)) {
! 152:
! 153: word = strchr(path, ':');
! 154: if(word) {
! 155: word++;
! 156: database = strchr(word, ':');
! 157: if(database) {
! 158: *database++ = (char)0;
! 159: strategy = strchr(database, ':');
! 160: if(strategy) {
! 161: *strategy++ = (char)0;
! 162: nthdef = strchr(strategy, ':');
! 163: if(nthdef) {
! 164: *nthdef = (char)0;
! 165: }
! 166: }
! 167: }
! 168: }
! 169:
! 170: if((word == NULL) || (*word == (char)0)) {
! 171: infof(data, "lookup word is missing\n");
! 172: word = (char *)"default";
! 173: }
! 174: if((database == NULL) || (*database == (char)0)) {
! 175: database = (char *)"!";
! 176: }
! 177: if((strategy == NULL) || (*strategy == (char)0)) {
! 178: strategy = (char *)".";
! 179: }
! 180:
! 181: eword = unescape_word(data, word);
! 182: if(!eword)
! 183: return CURLE_OUT_OF_MEMORY;
! 184:
! 185: result = Curl_sendf(sockfd, conn,
! 186: "CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
! 187: "MATCH "
! 188: "%s " /* database */
! 189: "%s " /* strategy */
! 190: "%s\r\n" /* word */
! 191: "QUIT\r\n",
! 192:
! 193: database,
! 194: strategy,
! 195: eword
! 196: );
! 197:
! 198: free(eword);
! 199:
! 200: if(result) {
! 201: failf(data, "Failed sending DICT request");
! 202: return result;
! 203: }
! 204: Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1); /* no upload */
! 205: }
! 206: else if(strncasecompare(path, DICT_DEFINE, sizeof(DICT_DEFINE)-1) ||
! 207: strncasecompare(path, DICT_DEFINE2, sizeof(DICT_DEFINE2)-1) ||
! 208: strncasecompare(path, DICT_DEFINE3, sizeof(DICT_DEFINE3)-1)) {
! 209:
! 210: word = strchr(path, ':');
! 211: if(word) {
! 212: word++;
! 213: database = strchr(word, ':');
! 214: if(database) {
! 215: *database++ = (char)0;
! 216: nthdef = strchr(database, ':');
! 217: if(nthdef) {
! 218: *nthdef = (char)0;
! 219: }
! 220: }
! 221: }
! 222:
! 223: if((word == NULL) || (*word == (char)0)) {
! 224: infof(data, "lookup word is missing\n");
! 225: word = (char *)"default";
! 226: }
! 227: if((database == NULL) || (*database == (char)0)) {
! 228: database = (char *)"!";
! 229: }
! 230:
! 231: eword = unescape_word(data, word);
! 232: if(!eword)
! 233: return CURLE_OUT_OF_MEMORY;
! 234:
! 235: result = Curl_sendf(sockfd, conn,
! 236: "CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
! 237: "DEFINE "
! 238: "%s " /* database */
! 239: "%s\r\n" /* word */
! 240: "QUIT\r\n",
! 241: database,
! 242: eword);
! 243:
! 244: free(eword);
! 245:
! 246: if(result) {
! 247: failf(data, "Failed sending DICT request");
! 248: return result;
! 249: }
! 250: Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
! 251: }
! 252: else {
! 253:
! 254: ppath = strchr(path, '/');
! 255: if(ppath) {
! 256: int i;
! 257:
! 258: ppath++;
! 259: for(i = 0; ppath[i]; i++) {
! 260: if(ppath[i] == ':')
! 261: ppath[i] = ' ';
! 262: }
! 263: result = Curl_sendf(sockfd, conn,
! 264: "CLIENT " LIBCURL_NAME " " LIBCURL_VERSION "\r\n"
! 265: "%s\r\n"
! 266: "QUIT\r\n", ppath);
! 267: if(result) {
! 268: failf(data, "Failed sending DICT request");
! 269: return result;
! 270: }
! 271:
! 272: Curl_setup_transfer(data, FIRSTSOCKET, -1, FALSE, -1);
! 273: }
! 274: }
! 275:
! 276: return CURLE_OK;
! 277: }
! 278: #endif /*CURL_DISABLE_DICT*/
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