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246 lines
6.3 KiB
C
246 lines
6.3 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "setup.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_PWD_H
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#include <pwd.h>
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#endif
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#ifdef __VMS
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#include <unixlib.h>
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#endif
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#include <curl/curl.h>
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#include "netrc.h"
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#include "strequal.h"
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#include "strtok.h"
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#include "curl_memory.h"
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#include "rawstr.h"
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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/* The last #include file should be: */
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#include "memdebug.h"
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/* Debug this single source file with:
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'make netrc' then run './netrc'!
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Oh, make sure you have a .netrc file too ;-)
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*/
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/* Get user and password from .netrc when given a machine name */
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enum {
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NOTHING,
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HOSTFOUND, /* the 'machine' keyword was found */
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HOSTCOMPLETE, /* the machine name following the keyword was found too */
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HOSTVALID, /* this is "our" machine! */
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HOSTEND /* LAST enum */
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};
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/* make sure we have room for at least this size: */
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#define LOGINSIZE 64
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#define PASSWORDSIZE 64
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/* returns -1 on failure, 0 if the host is found, 1 is the host isn't found */
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int Curl_parsenetrc(const char *host,
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char *login,
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char *password,
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char *netrcfile)
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{
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FILE *file;
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int retcode=1;
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int specific_login = (login[0] != 0);
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char *home = NULL;
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bool home_alloc = FALSE;
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bool netrc_alloc = FALSE;
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int state=NOTHING;
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char state_login=0; /* Found a login keyword */
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char state_password=0; /* Found a password keyword */
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int state_our_login=FALSE; /* With specific_login, found *our* login name */
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#define NETRC DOT_CHAR "netrc"
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#ifdef DEBUGBUILD
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{
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/* This is a hack to allow testing.
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* If compiled with --enable-debug and CURL_DEBUG_NETRC is defined,
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* then it's the path to a substitute .netrc for testing purposes *only* */
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char *override = curl_getenv("CURL_DEBUG_NETRC");
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if(override) {
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fprintf(stderr, "NETRC: overridden " NETRC " file: %s\n", override);
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netrcfile = override;
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netrc_alloc = TRUE;
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}
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}
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#endif /* DEBUGBUILD */
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if(!netrcfile) {
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home = curl_getenv("HOME"); /* portable environment reader */
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if(home) {
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home_alloc = TRUE;
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#if defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
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}
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else {
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struct passwd *pw;
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pw= getpwuid(geteuid());
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if(pw) {
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#ifdef __VMS
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home = decc_translate_vms(pw->pw_dir);
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#else
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home = pw->pw_dir;
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#endif
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}
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#endif
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}
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if(!home)
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return -1;
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netrcfile = curl_maprintf("%s%s%s", home, DIR_CHAR, NETRC);
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if(!netrcfile) {
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if(home_alloc)
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free(home);
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return -1;
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}
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netrc_alloc = TRUE;
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}
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file = fopen(netrcfile, "r");
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if(file) {
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char *tok;
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char *tok_buf;
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bool done=FALSE;
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char netrcbuffer[256];
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int netrcbuffsize = (int)sizeof(netrcbuffer);
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while(!done && fgets(netrcbuffer, netrcbuffsize, file)) {
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tok=strtok_r(netrcbuffer, " \t\n", &tok_buf);
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while(!done && tok) {
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if(login[0] && password[0]) {
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done=TRUE;
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break;
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}
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switch(state) {
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case NOTHING:
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if(Curl_raw_equal("machine", tok)) {
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/* the next tok is the machine name, this is in itself the
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delimiter that starts the stuff entered for this machine,
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after this we need to search for 'login' and
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'password'. */
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state=HOSTFOUND;
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}
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break;
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case HOSTFOUND:
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if(Curl_raw_equal(host, tok)) {
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/* and yes, this is our host! */
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state=HOSTVALID;
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#ifdef _NETRC_DEBUG
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fprintf(stderr, "HOST: %s\n", tok);
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#endif
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retcode=0; /* we did find our host */
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}
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else
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/* not our host */
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state=NOTHING;
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break;
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case HOSTVALID:
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/* we are now parsing sub-keywords concerning "our" host */
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if(state_login) {
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if(specific_login) {
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state_our_login = Curl_raw_equal(login, tok);
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}
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else {
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strncpy(login, tok, LOGINSIZE-1);
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#ifdef _NETRC_DEBUG
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fprintf(stderr, "LOGIN: %s\n", login);
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#endif
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}
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state_login=0;
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}
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else if(state_password) {
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if(state_our_login || !specific_login) {
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strncpy(password, tok, PASSWORDSIZE-1);
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#ifdef _NETRC_DEBUG
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fprintf(stderr, "PASSWORD: %s\n", password);
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#endif
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}
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state_password=0;
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}
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else if(Curl_raw_equal("login", tok))
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state_login=1;
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else if(Curl_raw_equal("password", tok))
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state_password=1;
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else if(Curl_raw_equal("machine", tok)) {
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/* ok, there's machine here go => */
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state = HOSTFOUND;
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state_our_login = FALSE;
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}
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break;
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} /* switch (state) */
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tok = strtok_r(NULL, " \t\n", &tok_buf);
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} /* while(tok) */
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} /* while fgets() */
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fclose(file);
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}
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if(home_alloc)
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free(home);
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if(netrc_alloc)
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free(netrcfile);
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return retcode;
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}
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#ifdef _NETRC_DEBUG
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int main(int argc, argv_item_t argv[])
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{
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char login[64]="";
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char password[64]="";
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if(argc<2)
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return -1;
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if(0 == ParseNetrc(argv[1], login, password)) {
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printf("HOST: %s LOGIN: %s PASSWORD: %s\n",
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argv[1], login, password);
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}
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}
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#endif
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