307 lines
8.1 KiB
C
307 lines
8.1 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 - 2012, 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 "tool_setup.h"
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#define ENABLE_CURLX_PRINTF
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/* use our own printf() functions */
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#include "curlx.h"
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#include "tool_cfgable.h"
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#include "tool_getparam.h"
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#include "tool_helpers.h"
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#include "tool_homedir.h"
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#include "tool_msgs.h"
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#include "tool_parsecfg.h"
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#include "memdebug.h" /* keep this as LAST include */
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#define CURLRC DOT_CHAR "curlrc"
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#define ISSEP(x) (((x) == '=') || ((x) == ':'))
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static const char *unslashquote(const char *line, char *param);
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static char *my_get_line(FILE *fp);
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/* return 0 on everything-is-fine, and non-zero otherwise */
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int parseconfig(const char *filename,
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struct Configurable *config)
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{
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int res;
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FILE *file;
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char filebuffer[512];
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bool usedarg;
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char *home;
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int rc = 0;
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if(!filename || !*filename) {
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/* NULL or no file name attempts to load .curlrc from the homedir! */
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#ifndef __AMIGA__
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filename = CURLRC; /* sensible default */
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home = homedir(); /* portable homedir finder */
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if(home) {
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if(strlen(home) < (sizeof(filebuffer) - strlen(CURLRC))) {
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snprintf(filebuffer, sizeof(filebuffer),
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"%s%s%s", home, DIR_CHAR, CURLRC);
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#ifdef WIN32
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/* Check if the file exists - if not, try CURLRC in the same
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* directory as our executable
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*/
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file = fopen(filebuffer, "r");
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if(file != NULL) {
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fclose(file);
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filename = filebuffer;
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}
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else {
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/* Get the filename of our executable. GetModuleFileName is
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* already declared via inclusions done in setup header file.
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* We assume that we are using the ASCII version here.
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*/
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int n = GetModuleFileName(0, filebuffer, sizeof(filebuffer));
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if(n > 0 && n < (int)sizeof(filebuffer)) {
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/* We got a valid filename - get the directory part */
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char *lastdirchar = strrchr(filebuffer, '\\');
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if(lastdirchar) {
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size_t remaining;
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*lastdirchar = 0;
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/* If we have enough space, build the RC filename */
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remaining = sizeof(filebuffer) - strlen(filebuffer);
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if(strlen(CURLRC) < remaining - 1) {
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snprintf(lastdirchar, remaining,
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"%s%s", DIR_CHAR, CURLRC);
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/* Don't bother checking if it exists - we do
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* that later
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*/
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filename = filebuffer;
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}
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}
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}
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}
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#else /* WIN32 */
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filename = filebuffer;
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#endif /* WIN32 */
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}
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Curl_safefree(home); /* we've used it, now free it */
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}
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# else /* __AMIGA__ */
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/* On AmigaOS all the config files are into env:
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*/
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filename = "ENV:" CURLRC;
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#endif
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}
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if(strcmp(filename,"-"))
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file = fopen(filename, "r");
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else
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file = stdin;
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if(file) {
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char *line;
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char *aline;
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char *option;
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char *param;
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int lineno = 0;
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bool alloced_param;
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while(NULL != (aline = my_get_line(file))) {
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lineno++;
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line = aline;
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alloced_param=FALSE;
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/* line with # in the first non-blank column is a comment! */
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while(*line && ISSPACE(*line))
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line++;
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switch(*line) {
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case '#':
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case '/':
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case '\r':
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case '\n':
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case '*':
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case '\0':
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Curl_safefree(aline);
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continue;
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}
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/* the option keywords starts here */
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option = line;
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while(*line && !ISSPACE(*line) && !ISSEP(*line))
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line++;
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/* ... and has ended here */
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if(*line)
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*line++ = '\0'; /* zero terminate, we have a local copy of the data */
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#ifdef DEBUG_CONFIG
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fprintf(stderr, "GOT: %s\n", option);
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#endif
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/* pass spaces and separator(s) */
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while(*line && (ISSPACE(*line) || ISSEP(*line)))
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line++;
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/* the parameter starts here (unless quoted) */
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if(*line == '\"') {
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/* quoted parameter, do the quote dance */
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line++;
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param = malloc(strlen(line) + 1); /* parameter */
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if(!param) {
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/* out of memory */
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Curl_safefree(aline);
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rc = 1;
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break;
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}
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alloced_param = TRUE;
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(void)unslashquote(line, param);
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}
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else {
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param = line; /* parameter starts here */
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while(*line && !ISSPACE(*line))
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line++;
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*line = '\0'; /* zero terminate */
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}
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if(param && !*param) {
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/* do this so getparameter can check for required parameters.
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Otherwise it always thinks there's a parameter. */
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if(alloced_param)
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Curl_safefree(param);
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param = NULL;
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}
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#ifdef DEBUG_CONFIG
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fprintf(stderr, "PARAM: \"%s\"\n",(param ? param : "(null)"));
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#endif
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res = getparameter(option, param, &usedarg, config);
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if(param && *param && !usedarg)
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/* we passed in a parameter that wasn't used! */
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res = PARAM_GOT_EXTRA_PARAMETER;
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if(res != PARAM_OK) {
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/* the help request isn't really an error */
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if(!strcmp(filename, "-")) {
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filename = (char *)"<stdin>";
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}
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if(PARAM_HELP_REQUESTED != res) {
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const char *reason = param2text(res);
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warnf(config, "%s:%d: warning: '%s' %s\n",
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filename, lineno, option, reason);
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}
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}
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if(alloced_param)
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Curl_safefree(param);
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Curl_safefree(aline);
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}
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if(file != stdin)
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fclose(file);
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}
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else
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rc = 1; /* couldn't open the file */
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return rc;
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}
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/*
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* Copies the string from line to the buffer at param, unquoting
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* backslash-quoted characters and NUL-terminating the output string.
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* Stops at the first non-backslash-quoted double quote character or the
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* end of the input string. param must be at least as long as the input
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* string. Returns the pointer after the last handled input character.
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*/
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static const char *unslashquote(const char *line, char *param)
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{
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while(*line && (*line != '\"')) {
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if(*line == '\\') {
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char out;
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line++;
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/* default is to output the letter after the backslash */
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switch(out = *line) {
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case '\0':
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continue; /* this'll break out of the loop */
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case 't':
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out = '\t';
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break;
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case 'n':
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out = '\n';
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break;
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case 'r':
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out = '\r';
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break;
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case 'v':
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out = '\v';
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break;
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}
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*param++ = out;
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line++;
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}
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else
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*param++ = *line++;
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}
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*param = '\0'; /* always zero terminate */
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return line;
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}
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/*
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* Reads a line from the given file, ensuring is NUL terminated.
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* The pointer must be freed by the caller.
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* NULL is returned on an out of memory condition.
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*/
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static char *my_get_line(FILE *fp)
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{
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char buf[4096];
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char *nl = NULL;
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char *retval = NULL;
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do {
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if(NULL == fgets(buf, sizeof(buf), fp))
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break;
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if(!retval) {
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retval = strdup(buf);
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if(!retval)
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return NULL;
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}
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else {
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char *ptr;
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ptr = realloc(retval, strlen(retval) + strlen(buf) + 1);
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if(!ptr) {
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Curl_safefree(retval);
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return NULL;
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}
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retval = ptr;
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strcat(retval, buf);
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}
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nl = strchr(retval, '\n');
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} while(!nl);
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if(nl)
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*nl = '\0';
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return retval;
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}
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