| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 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 https://curl.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. |
| * |
| * SPDX-License-Identifier: curl |
| * |
| ***************************************************************************/ |
| #include "tool_setup.h" |
| |
| #include "curlx.h" |
| |
| #include "tool_cfgable.h" |
| #include "tool_getparam.h" |
| #include "tool_helpers.h" |
| #include "tool_findfile.h" |
| #include "tool_msgs.h" |
| #include "tool_parsecfg.h" |
| #include "tool_util.h" |
| #include "dynbuf.h" |
| |
| #include "memdebug.h" /* keep this as LAST include */ |
| |
| /* only acknowledge colon or equals as separators if the option was not |
| specified with an initial dash! */ |
| #define ISSEP(x,dash) (!dash && (((x) == '=') || ((x) == ':'))) |
| |
| static const char *unslashquote(const char *line, char *param); |
| |
| #define MAX_CONFIG_LINE_LENGTH (10*1024*1024) |
| |
| /* return 0 on everything-is-fine, and non-zero otherwise */ |
| int parseconfig(const char *filename, struct GlobalConfig *global) |
| { |
| FILE *file = NULL; |
| bool usedarg = FALSE; |
| int rc = 0; |
| struct OperationConfig *operation = global->last; |
| char *pathalloc = NULL; |
| |
| if(!filename) { |
| /* NULL means load .curlrc from homedir! */ |
| char *curlrc = findfile(".curlrc", CURLRC_DOTSCORE); |
| if(curlrc) { |
| file = fopen(curlrc, FOPEN_READTEXT); |
| if(!file) { |
| free(curlrc); |
| return 1; |
| } |
| filename = pathalloc = curlrc; |
| } |
| #if defined(_WIN32) && !defined(UNDER_CE) |
| else { |
| char *fullp; |
| /* check for .curlrc then _curlrc in the dir of the executable */ |
| file = tool_execpath(".curlrc", &fullp); |
| if(!file) |
| file = tool_execpath("_curlrc", &fullp); |
| if(file) |
| /* this is the filename we read from */ |
| filename = fullp; |
| } |
| #endif |
| } |
| else { |
| if(strcmp(filename, "-")) |
| file = fopen(filename, FOPEN_READTEXT); |
| else |
| file = stdin; |
| } |
| |
| if(file) { |
| char *line; |
| char *option; |
| char *param; |
| int lineno = 0; |
| bool dashed_option; |
| struct curlx_dynbuf buf; |
| bool fileerror = FALSE; |
| curlx_dyn_init(&buf, MAX_CONFIG_LINE_LENGTH); |
| DEBUGASSERT(filename); |
| |
| while(!rc && my_get_line(file, &buf, &fileerror)) { |
| ParameterError res; |
| bool alloced_param = FALSE; |
| lineno++; |
| line = curlx_dyn_ptr(&buf); |
| if(!line) { |
| rc = 1; /* out of memory */ |
| break; |
| } |
| |
| /* the option keywords starts here */ |
| option = line; |
| |
| /* the option starts with a dash? */ |
| dashed_option = (option[0] == '-'); |
| |
| while(*line && !ISBLANK(*line) && !ISSEP(*line, dashed_option)) |
| line++; |
| /* ... and has ended here */ |
| |
| if(*line) |
| *line++ = '\0'; /* null-terminate, we have a local copy of the data */ |
| |
| #ifdef DEBUG_CONFIG |
| fprintf(tool_stderr, "GOT: %s\n", option); |
| #endif |
| |
| /* pass spaces and separator(s) */ |
| while(ISBLANK(*line) || ISSEP(*line, dashed_option)) |
| 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 */ |
| rc = 1; |
| break; |
| } |
| alloced_param = TRUE; |
| (void)unslashquote(line, param); |
| } |
| else { |
| param = line; /* parameter starts here */ |
| while(*line && !ISSPACE(*line)) /* stop also on CRLF */ |
| line++; |
| |
| if(*line) { |
| *line = '\0'; /* null-terminate */ |
| |
| /* to detect mistakes better, see if there is data following */ |
| line++; |
| /* pass all spaces */ |
| while(ISBLANK(*line)) |
| line++; |
| |
| switch(*line) { |
| case '\0': |
| case '\r': |
| case '\n': |
| case '#': /* comment */ |
| break; |
| default: |
| warnf(operation->global, "%s:%d: warning: '%s' uses unquoted " |
| "whitespace", filename, lineno, option); |
| warnf(operation->global, "This may cause side-effects. " |
| "Consider using double quotes?"); |
| } |
| } |
| if(!*param) |
| /* do this so getparameter can check for required parameters. |
| Otherwise it always thinks there is a parameter. */ |
| param = NULL; |
| } |
| |
| #ifdef DEBUG_CONFIG |
| fprintf(tool_stderr, "PARAM: \"%s\"\n",(param ? param : "(null)")); |
| #endif |
| res = getparameter(option, param, NULL, NULL, |
| &usedarg, global, operation); |
| operation = global->last; |
| |
| if(!res && param && *param && !usedarg) |
| /* we passed in a parameter that was not used! */ |
| res = PARAM_GOT_EXTRA_PARAMETER; |
| |
| if(res == PARAM_NEXT_OPERATION) { |
| if(operation->url_list && operation->url_list->url) { |
| /* Allocate the next config */ |
| operation->next = malloc(sizeof(struct OperationConfig)); |
| if(operation->next) { |
| /* Initialise the newly created config */ |
| config_init(operation->next); |
| |
| /* Set the global config pointer */ |
| operation->next->global = global; |
| |
| /* Update the last operation pointer */ |
| global->last = operation->next; |
| |
| /* Move onto the new config */ |
| operation->next->prev = operation; |
| operation = operation->next; |
| } |
| else |
| res = PARAM_NO_MEM; |
| } |
| } |
| |
| if(res != PARAM_OK && res != PARAM_NEXT_OPERATION) { |
| /* the help request is not really an error */ |
| if(!strcmp(filename, "-")) { |
| filename = "<stdin>"; |
| } |
| if(res != PARAM_HELP_REQUESTED && |
| res != PARAM_MANUAL_REQUESTED && |
| res != PARAM_VERSION_INFO_REQUESTED && |
| res != PARAM_ENGINES_REQUESTED && |
| res != PARAM_CA_EMBED_REQUESTED) { |
| const char *reason = param2text(res); |
| errorf(operation->global, "%s:%d: '%s' %s", |
| filename, lineno, option, reason); |
| rc = (int)res; |
| } |
| } |
| |
| if(alloced_param) |
| curlx_safefree(param); |
| } |
| curlx_dyn_free(&buf); |
| if(file != stdin) |
| fclose(file); |
| if(fileerror) |
| rc = 1; |
| } |
| else |
| rc = 1; /* could not open the file */ |
| |
| free(pathalloc); |
| 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 null-terminate */ |
| return line; |
| } |
| |
| static bool get_line(FILE *input, struct dynbuf *buf, bool *error) |
| { |
| CURLcode result; |
| char buffer[128]; |
| curlx_dyn_reset(buf); |
| while(1) { |
| char *b = fgets(buffer, sizeof(buffer), input); |
| |
| if(b) { |
| size_t rlen = strlen(b); |
| |
| if(!rlen) |
| break; |
| |
| result = curlx_dyn_addn(buf, b, rlen); |
| if(result) { |
| /* too long line or out of memory */ |
| *error = TRUE; |
| return FALSE; /* error */ |
| } |
| |
| else if(b[rlen-1] == '\n') { |
| /* end of the line, drop the newline */ |
| size_t len = curlx_dyn_len(buf); |
| if(len) |
| curlx_dyn_setlen(buf, len - 1); |
| return TRUE; /* all good */ |
| } |
| |
| else if(feof(input)) |
| return TRUE; /* all good */ |
| } |
| else if(curlx_dyn_len(buf)) |
| return TRUE; /* all good */ |
| else |
| break; |
| } |
| return FALSE; |
| } |
| |
| /* |
| * Returns a line from the given file. Every line is NULL terminated (no |
| * newline). Skips #-commented and space/tabs-only lines automatically. |
| */ |
| bool my_get_line(FILE *input, struct dynbuf *buf, bool *error) |
| { |
| bool retcode; |
| do { |
| retcode = get_line(input, buf, error); |
| if(!*error && retcode) { |
| size_t len = curlx_dyn_len(buf); |
| if(len) { |
| const char *line = curlx_dyn_ptr(buf); |
| while(ISBLANK(*line)) |
| line++; |
| |
| /* a line with # in the first non-blank column is a comment! */ |
| if((*line == '#') || !*line) |
| continue; |
| } |
| else |
| continue; /* avoid returning an empty line */ |
| } |
| break; |
| } while(retcode); |
| return retcode; |
| } |
