Annotation of embedaddon/curl/lib/netrc.c, revision 1.1
1.1 ! misho 1: /***************************************************************************
! 2: * _ _ ____ _
! 3: * Project ___| | | | _ \| |
! 4: * / __| | | | |_) | |
! 5: * | (__| |_| | _ <| |___
! 6: * \___|\___/|_| \_\_____|
! 7: *
! 8: * Copyright (C) 1998 - 2019, 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: #ifndef CURL_DISABLE_NETRC
! 25:
! 26: #ifdef HAVE_PWD_H
! 27: #include <pwd.h>
! 28: #endif
! 29:
! 30: #include <curl/curl.h>
! 31: #include "netrc.h"
! 32: #include "strtok.h"
! 33: #include "strcase.h"
! 34:
! 35: /* The last 3 #include files should be in this order */
! 36: #include "curl_printf.h"
! 37: #include "curl_memory.h"
! 38: #include "memdebug.h"
! 39:
! 40: /* Get user and password from .netrc when given a machine name */
! 41:
! 42: enum host_lookup_state {
! 43: NOTHING,
! 44: HOSTFOUND, /* the 'machine' keyword was found */
! 45: HOSTVALID /* this is "our" machine! */
! 46: };
! 47:
! 48: #define NETRC_FILE_MISSING 1
! 49: #define NETRC_FAILED -1
! 50: #define NETRC_SUCCESS 0
! 51:
! 52: /*
! 53: * Returns zero on success.
! 54: */
! 55: static int parsenetrc(const char *host,
! 56: char **loginp,
! 57: char **passwordp,
! 58: bool *login_changed,
! 59: bool *password_changed,
! 60: char *netrcfile)
! 61: {
! 62: FILE *file;
! 63: int retcode = NETRC_FILE_MISSING;
! 64: char *login = *loginp;
! 65: char *password = *passwordp;
! 66: bool specific_login = (login && *login != 0);
! 67: bool login_alloc = FALSE;
! 68: bool password_alloc = FALSE;
! 69: enum host_lookup_state state = NOTHING;
! 70:
! 71: char state_login = 0; /* Found a login keyword */
! 72: char state_password = 0; /* Found a password keyword */
! 73: int state_our_login = FALSE; /* With specific_login, found *our* login
! 74: name */
! 75:
! 76: DEBUGASSERT(netrcfile);
! 77:
! 78: file = fopen(netrcfile, FOPEN_READTEXT);
! 79: if(file) {
! 80: char *tok;
! 81: char *tok_buf;
! 82: bool done = FALSE;
! 83: char netrcbuffer[4096];
! 84: int netrcbuffsize = (int)sizeof(netrcbuffer);
! 85:
! 86: while(!done && fgets(netrcbuffer, netrcbuffsize, file)) {
! 87: tok = strtok_r(netrcbuffer, " \t\n", &tok_buf);
! 88: if(tok && *tok == '#')
! 89: /* treat an initial hash as a comment line */
! 90: continue;
! 91: while(tok) {
! 92:
! 93: if((login && *login) && (password && *password)) {
! 94: done = TRUE;
! 95: break;
! 96: }
! 97:
! 98: switch(state) {
! 99: case NOTHING:
! 100: if(strcasecompare("machine", tok)) {
! 101: /* the next tok is the machine name, this is in itself the
! 102: delimiter that starts the stuff entered for this machine,
! 103: after this we need to search for 'login' and
! 104: 'password'. */
! 105: state = HOSTFOUND;
! 106: }
! 107: else if(strcasecompare("default", tok)) {
! 108: state = HOSTVALID;
! 109: retcode = NETRC_SUCCESS; /* we did find our host */
! 110: }
! 111: break;
! 112: case HOSTFOUND:
! 113: if(strcasecompare(host, tok)) {
! 114: /* and yes, this is our host! */
! 115: state = HOSTVALID;
! 116: retcode = NETRC_SUCCESS; /* we did find our host */
! 117: }
! 118: else
! 119: /* not our host */
! 120: state = NOTHING;
! 121: break;
! 122: case HOSTVALID:
! 123: /* we are now parsing sub-keywords concerning "our" host */
! 124: if(state_login) {
! 125: if(specific_login) {
! 126: state_our_login = strcasecompare(login, tok);
! 127: }
! 128: else if(!login || strcmp(login, tok)) {
! 129: if(login_alloc) {
! 130: free(login);
! 131: login_alloc = FALSE;
! 132: }
! 133: login = strdup(tok);
! 134: if(!login) {
! 135: retcode = NETRC_FAILED; /* allocation failed */
! 136: goto out;
! 137: }
! 138: login_alloc = TRUE;
! 139: }
! 140: state_login = 0;
! 141: }
! 142: else if(state_password) {
! 143: if((state_our_login || !specific_login)
! 144: && (!password || strcmp(password, tok))) {
! 145: if(password_alloc) {
! 146: free(password);
! 147: password_alloc = FALSE;
! 148: }
! 149: password = strdup(tok);
! 150: if(!password) {
! 151: retcode = NETRC_FAILED; /* allocation failed */
! 152: goto out;
! 153: }
! 154: password_alloc = TRUE;
! 155: }
! 156: state_password = 0;
! 157: }
! 158: else if(strcasecompare("login", tok))
! 159: state_login = 1;
! 160: else if(strcasecompare("password", tok))
! 161: state_password = 1;
! 162: else if(strcasecompare("machine", tok)) {
! 163: /* ok, there's machine here go => */
! 164: state = HOSTFOUND;
! 165: state_our_login = FALSE;
! 166: }
! 167: break;
! 168: } /* switch (state) */
! 169:
! 170: tok = strtok_r(NULL, " \t\n", &tok_buf);
! 171: } /* while(tok) */
! 172: } /* while fgets() */
! 173:
! 174: out:
! 175: if(!retcode) {
! 176: /* success */
! 177: *login_changed = FALSE;
! 178: *password_changed = FALSE;
! 179: if(login_alloc) {
! 180: if(*loginp)
! 181: free(*loginp);
! 182: *loginp = login;
! 183: *login_changed = TRUE;
! 184: }
! 185: if(password_alloc) {
! 186: if(*passwordp)
! 187: free(*passwordp);
! 188: *passwordp = password;
! 189: *password_changed = TRUE;
! 190: }
! 191: }
! 192: else {
! 193: if(login_alloc)
! 194: free(login);
! 195: if(password_alloc)
! 196: free(password);
! 197: }
! 198: fclose(file);
! 199: }
! 200:
! 201: return retcode;
! 202: }
! 203:
! 204: /*
! 205: * @unittest: 1304
! 206: *
! 207: * *loginp and *passwordp MUST be allocated if they aren't NULL when passed
! 208: * in.
! 209: */
! 210: int Curl_parsenetrc(const char *host,
! 211: char **loginp,
! 212: char **passwordp,
! 213: bool *login_changed,
! 214: bool *password_changed,
! 215: char *netrcfile)
! 216: {
! 217: int retcode = 1;
! 218: char *filealloc = NULL;
! 219:
! 220: if(!netrcfile) {
! 221: char *home = NULL;
! 222: char *homea = curl_getenv("HOME"); /* portable environment reader */
! 223: if(homea) {
! 224: home = homea;
! 225: #if defined(HAVE_GETPWUID_R) && defined(HAVE_GETEUID)
! 226: }
! 227: else {
! 228: struct passwd pw, *pw_res;
! 229: char pwbuf[1024];
! 230: if(!getpwuid_r(geteuid(), &pw, pwbuf, sizeof(pwbuf), &pw_res)
! 231: && pw_res) {
! 232: home = pw.pw_dir;
! 233: }
! 234: #elif defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
! 235: }
! 236: else {
! 237: struct passwd *pw;
! 238: pw = getpwuid(geteuid());
! 239: if(pw) {
! 240: home = pw->pw_dir;
! 241: }
! 242: #endif
! 243: }
! 244:
! 245: if(!home)
! 246: return retcode; /* no home directory found (or possibly out of
! 247: memory) */
! 248:
! 249: filealloc = curl_maprintf("%s%s.netrc", home, DIR_CHAR);
! 250: if(!filealloc) {
! 251: free(homea);
! 252: return -1;
! 253: }
! 254: retcode = parsenetrc(host, loginp, passwordp, login_changed,
! 255: password_changed, filealloc);
! 256: free(filealloc);
! 257: #ifdef WIN32
! 258: if(retcode == NETRC_FILE_MISSING) {
! 259: /* fallback to the old-style "_netrc" file */
! 260: filealloc = curl_maprintf("%s%s_netrc", home, DIR_CHAR);
! 261: if(!filealloc) {
! 262: free(homea);
! 263: return -1;
! 264: }
! 265: retcode = parsenetrc(host, loginp, passwordp, login_changed,
! 266: password_changed, filealloc);
! 267: free(filealloc);
! 268: }
! 269: #endif
! 270: free(homea);
! 271: }
! 272: else
! 273: retcode = parsenetrc(host, loginp, passwordp, login_changed,
! 274: password_changed, netrcfile);
! 275: return retcode;
! 276: }
! 277:
! 278: #endif
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to netrc.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / curl / lib