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-rw-r--r--src/tool_parsecfg.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/src/tool_parsecfg.c b/src/tool_parsecfg.c
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+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at http://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+#include "setup.h"
+
+#include <curl/curl.h>
+
+#define ENABLE_CURLX_PRINTF
+/* use our own printf() functions */
+#include "curlx.h"
+
+#include "tool_cfgable.h"
+#include "tool_getparam.h"
+#include "tool_helpers.h"
+#include "tool_homedir.h"
+#include "tool_msgs.h"
+#include "tool_parsecfg.h"
+
+#include "memdebug.h" /* keep this as LAST include */
+
+#define CURLRC DOT_CHAR "curlrc"
+#define ISSEP(x) (((x) == '=') || ((x) == ':'))
+
+static const char *unslashquote(const char *line, char *param);
+static char *my_get_line(FILE *fp);
+
+/* return 0 on everything-is-fine, and non-zero otherwise */
+int parseconfig(const char *filename,
+ struct Configurable *config)
+{
+ int res;
+ FILE *file;
+ char filebuffer[512];
+ bool usedarg;
+ char *home;
+ int rc = 0;
+
+ if(!filename || !*filename) {
+ /* NULL or no file name attempts to load .curlrc from the homedir! */
+
+#ifndef __AMIGA__
+ filename = CURLRC; /* sensible default */
+ home = homedir(); /* portable homedir finder */
+ if(home) {
+ if(strlen(home) < (sizeof(filebuffer) - strlen(CURLRC))) {
+ snprintf(filebuffer, sizeof(filebuffer),
+ "%s%s%s", home, DIR_CHAR, CURLRC);
+
+#ifdef WIN32
+ /* Check if the file exists - if not, try CURLRC in the same
+ * directory as our executable
+ */
+ file = fopen(filebuffer, "r");
+ if(file != NULL) {
+ fclose(file);
+ filename = filebuffer;
+ }
+ else {
+ /* Get the filename of our executable. GetModuleFileName is
+ * already declared via inclusions done in setup header file.
+ * We assume that we are using the ASCII version here.
+ */
+ int n = GetModuleFileName(0, filebuffer, sizeof(filebuffer));
+ if(n > 0 && n < (int)sizeof(filebuffer)) {
+ /* We got a valid filename - get the directory part */
+ char *lastdirchar = strrchr(filebuffer, '\\');
+ if(lastdirchar) {
+ size_t remaining;
+ *lastdirchar = 0;
+ /* If we have enough space, build the RC filename */
+ remaining = sizeof(filebuffer) - strlen(filebuffer);
+ if(strlen(CURLRC) < remaining - 1) {
+ snprintf(lastdirchar, remaining,
+ "%s%s", DIR_CHAR, CURLRC);
+ /* Don't bother checking if it exists - we do
+ * that later
+ */
+ filename = filebuffer;
+ }
+ }
+ }
+ }
+#else /* WIN32 */
+ filename = filebuffer;
+#endif /* WIN32 */
+ }
+ Curl_safefree(home); /* we've used it, now free it */
+ }
+
+# else /* __AMIGA__ */
+ /* On AmigaOS all the config files are into env:
+ */
+ filename = "ENV:" CURLRC;
+
+#endif
+ }
+
+ if(strcmp(filename,"-"))
+ file = fopen(filename, "r");
+ else
+ file = stdin;
+
+ if(file) {
+ char *line;
+ char *aline;
+ char *option;
+ char *param;
+ int lineno = 0;
+ bool alloced_param;
+
+ while(NULL != (aline = my_get_line(file))) {
+ lineno++;
+ line = aline;
+ alloced_param=FALSE;
+
+ /* line with # in the first non-blank column is a comment! */
+ while(*line && ISSPACE(*line))
+ line++;
+
+ switch(*line) {
+ case '#':
+ case '/':
+ case '\r':
+ case '\n':
+ case '*':
+ case '\0':
+ Curl_safefree(aline);
+ continue;
+ }
+
+ /* the option keywords starts here */
+ option = line;
+ while(*line && !ISSPACE(*line) && !ISSEP(*line))
+ line++;
+ /* ... and has ended here */
+
+ if(*line)
+ *line++ = '\0'; /* zero terminate, we have a local copy of the data */
+
+#ifdef DEBUG_CONFIG
+ fprintf(stderr, "GOT: %s\n", option);
+#endif
+
+ /* pass spaces and separator(s) */
+ while(*line && (ISSPACE(*line) || ISSEP(*line)))
+ line++;
+
+ /* the parameter starts here (unless quoted) */
+ if(*line == '\"') {
+ /* quoted parameter, do the quote dance */
+ line++;
+ param = malloc(strlen(line) + 1); /* parameter */
+ if(!param) {
+ /* out of memory */
+ Curl_safefree(aline);
+ rc = 1;
+ break;
+ }
+ alloced_param = TRUE;
+ (void)unslashquote(line, param);
+ }
+ else {
+ param = line; /* parameter starts here */
+ while(*line && !ISSPACE(*line))
+ line++;
+ *line = '\0'; /* zero terminate */
+ }
+
+ if(param && !*param) {
+ /* do this so getparameter can check for required parameters.
+ Otherwise it always thinks there's a parameter. */
+ if(alloced_param)
+ Curl_safefree(param);
+ param = NULL;
+ }
+
+#ifdef DEBUG_CONFIG
+ fprintf(stderr, "PARAM: \"%s\"\n",(param ? param : "(null)"));
+#endif
+ res = getparameter(option, param, &usedarg, config);
+
+ if(param && *param && !usedarg)
+ /* we passed in a parameter that wasn't used! */
+ res = PARAM_GOT_EXTRA_PARAMETER;
+
+ if(res != PARAM_OK) {
+ /* the help request isn't really an error */
+ if(!strcmp(filename, "-")) {
+ filename = (char *)"<stdin>";
+ }
+ if(PARAM_HELP_REQUESTED != res) {
+ const char *reason = param2text(res);
+ warnf(config, "%s:%d: warning: '%s' %s\n",
+ filename, lineno, option, reason);
+ }
+ }
+
+ if(alloced_param)
+ Curl_safefree(param);
+
+ Curl_safefree(aline);
+ }
+ if(file != stdin)
+ fclose(file);
+ }
+ else
+ rc = 1; /* couldn't open the file */
+
+ return rc;
+}
+
+/*
+ * Copies the string from line to the buffer at param, unquoting
+ * backslash-quoted characters and NUL-terminating the output string.
+ * Stops at the first non-backslash-quoted double quote character or the
+ * end of the input string. param must be at least as long as the input
+ * string. Returns the pointer after the last handled input character.
+ */
+static const char *unslashquote(const char *line, char *param)
+{
+ while(*line && (*line != '\"')) {
+ if(*line == '\\') {
+ char out;
+ line++;
+
+ /* default is to output the letter after the backslash */
+ switch(out = *line) {
+ case '\0':
+ continue; /* this'll break out of the loop */
+ case 't':
+ out = '\t';
+ break;
+ case 'n':
+ out = '\n';
+ break;
+ case 'r':
+ out = '\r';
+ break;
+ case 'v':
+ out = '\v';
+ break;
+ }
+ *param++ = out;
+ line++;
+ }
+ else
+ *param++ = *line++;
+ }
+ *param = '\0'; /* always zero terminate */
+ return line;
+}
+
+/*
+ * Reads a line from the given file, ensuring is NUL terminated.
+ * The pointer must be freed by the caller.
+ * NULL is returned on an out of memory condition.
+ */
+static char *my_get_line(FILE *fp)
+{
+ char buf[4096];
+ char *nl = NULL;
+ char *retval = NULL;
+
+ do {
+ if(NULL == fgets(buf, sizeof(buf), fp))
+ break;
+ if(!retval) {
+ retval = strdup(buf);
+ if(!retval)
+ return NULL;
+ }
+ else {
+ char *ptr;
+ ptr = realloc(retval, strlen(retval) + strlen(buf) + 1);
+ if(!ptr) {
+ Curl_safefree(retval);
+ return NULL;
+ }
+ retval = ptr;
+ strcat(retval, buf);
+ }
+ nl = strchr(retval, '\n');
+ } while(!nl);
+
+ if(nl)
+ *nl = '\0';
+
+ return retval;
+}
+
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