1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel (at) 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 #include "tool_setup.h" 23 24 #define ENABLE_CURLX_PRINTF 25 /* use our own printf() functions */ 26 #include "curlx.h" 27 28 #include "tool_cfgable.h" 29 #include "tool_getparam.h" 30 #include "tool_helpers.h" 31 #include "tool_homedir.h" 32 #include "tool_msgs.h" 33 #include "tool_parsecfg.h" 34 35 #include "memdebug.h" /* keep this as LAST include */ 36 37 #define CURLRC DOT_CHAR "curlrc" 38 39 /* only acknowledge colon or equals as separators if the option was not 40 specified with an initial dash! */ 41 #define ISSEP(x,dash) (!dash && (((x) == '=') || ((x) == ':'))) 42 43 static const char *unslashquote(const char *line, char *param); 44 static char *my_get_line(FILE *fp); 45 46 /* return 0 on everything-is-fine, and non-zero otherwise */ 47 int parseconfig(const char *filename, struct GlobalConfig *global) 48 { 49 int res; 50 FILE *file; 51 char filebuffer[512]; 52 bool usedarg = FALSE; 53 char *home; 54 int rc = 0; 55 struct OperationConfig *operation = global->first; 56 57 if(!filename || !*filename) { 58 /* NULL or no file name attempts to load .curlrc from the homedir! */ 59 60 #ifndef __AMIGA__ 61 filename = CURLRC; /* sensible default */ 62 home = homedir(); /* portable homedir finder */ 63 if(home) { 64 if(strlen(home) < (sizeof(filebuffer) - strlen(CURLRC))) { 65 snprintf(filebuffer, sizeof(filebuffer), 66 "%s%s%s", home, DIR_CHAR, CURLRC); 67 68 #ifdef WIN32 69 /* Check if the file exists - if not, try CURLRC in the same 70 * directory as our executable 71 */ 72 file = fopen(filebuffer, FOPEN_READTEXT); 73 if(file != NULL) { 74 fclose(file); 75 filename = filebuffer; 76 } 77 else { 78 /* Get the filename of our executable. GetModuleFileName is 79 * already declared via inclusions done in setup header file. 80 * We assume that we are using the ASCII version here. 81 */ 82 int n = GetModuleFileNameA(0, filebuffer, sizeof(filebuffer)); 83 if(n > 0 && n < (int)sizeof(filebuffer)) { 84 /* We got a valid filename - get the directory part */ 85 char *lastdirchar = strrchr(filebuffer, '\\'); 86 if(lastdirchar) { 87 size_t remaining; 88 *lastdirchar = 0; 89 /* If we have enough space, build the RC filename */ 90 remaining = sizeof(filebuffer) - strlen(filebuffer); 91 if(strlen(CURLRC) < remaining - 1) { 92 snprintf(lastdirchar, remaining, 93 "%s%s", DIR_CHAR, CURLRC); 94 /* Don't bother checking if it exists - we do 95 * that later 96 */ 97 filename = filebuffer; 98 } 99 } 100 } 101 } 102 #else /* WIN32 */ 103 filename = filebuffer; 104 #endif /* WIN32 */ 105 } 106 Curl_safefree(home); /* we've used it, now free it */ 107 } 108 109 # else /* __AMIGA__ */ 110 /* On AmigaOS all the config files are into env: 111 */ 112 filename = "ENV:" CURLRC; 113 114 #endif 115 } 116 117 if(strcmp(filename, "-")) 118 file = fopen(filename, FOPEN_READTEXT); 119 else 120 file = stdin; 121 122 if(file) { 123 char *line; 124 char *aline; 125 char *option; 126 char *param; 127 int lineno = 0; 128 bool alloced_param; 129 bool dashed_option; 130 131 while(NULL != (aline = my_get_line(file))) { 132 lineno++; 133 line = aline; 134 alloced_param = FALSE; 135 136 /* line with # in the first non-blank column is a comment! */ 137 while(*line && ISSPACE(*line)) 138 line++; 139 140 switch(*line) { 141 case '#': 142 case '/': 143 case '\r': 144 case '\n': 145 case '*': 146 case '\0': 147 Curl_safefree(aline); 148 continue; 149 } 150 151 /* the option keywords starts here */ 152 option = line; 153 154 /* the option starts with a dash? */ 155 dashed_option = option[0]=='-'?TRUE:FALSE; 156 157 while(*line && !ISSPACE(*line) && !ISSEP(*line, dashed_option)) 158 line++; 159 /* ... and has ended here */ 160 161 if(*line) 162 *line++ = '\0'; /* zero terminate, we have a local copy of the data */ 163 164 #ifdef DEBUG_CONFIG 165 fprintf(stderr, "GOT: %s\n", option); 166 #endif 167 168 /* pass spaces and separator(s) */ 169 while(*line && (ISSPACE(*line) || ISSEP(*line, dashed_option))) 170 line++; 171 172 /* the parameter starts here (unless quoted) */ 173 if(*line == '\"') { 174 /* quoted parameter, do the quote dance */ 175 line++; 176 param = malloc(strlen(line) + 1); /* parameter */ 177 if(!param) { 178 /* out of memory */ 179 Curl_safefree(aline); 180 rc = 1; 181 break; 182 } 183 alloced_param = TRUE; 184 (void)unslashquote(line, param); 185 } 186 else { 187 param = line; /* parameter starts here */ 188 while(*line && !ISSPACE(*line)) 189 line++; 190 191 if(*line) { 192 *line = '\0'; /* zero terminate */ 193 194 /* to detect mistakes better, see if there's data following */ 195 line++; 196 /* pass all spaces */ 197 while(*line && ISSPACE(*line)) 198 line++; 199 200 switch(*line) { 201 case '\0': 202 case '\r': 203 case '\n': 204 case '#': /* comment */ 205 break; 206 default: 207 warnf(operation->global, "%s:%d: warning: '%s' uses unquoted " 208 "white space in the line that may cause side-effects!\n", 209 filename, lineno, option); 210 } 211 } 212 if(!*param) 213 /* do this so getparameter can check for required parameters. 214 Otherwise it always thinks there's a parameter. */ 215 param = NULL; 216 } 217 218 #ifdef DEBUG_CONFIG 219 fprintf(stderr, "PARAM: \"%s\"\n",(param ? param : "(null)")); 220 #endif 221 res = getparameter(option, param, &usedarg, global, operation); 222 223 if(!res && param && *param && !usedarg) 224 /* we passed in a parameter that wasn't used! */ 225 res = PARAM_GOT_EXTRA_PARAMETER; 226 227 if(res == PARAM_NEXT_OPERATION) { 228 if(operation->url_list && operation->url_list->url) { 229 /* Allocate the next config */ 230 operation->next = malloc(sizeof(struct OperationConfig)); 231 if(operation->next) { 232 /* Initialise the newly created config */ 233 config_init(operation->next); 234 235 /* Copy the easy handle */ 236 operation->next->easy = global->easy; 237 238 /* Set the global config pointer */ 239 operation->next->global = global; 240 241 /* Update the last operation pointer */ 242 global->last = operation->next; 243 244 /* Move onto the new config */ 245 operation->next->prev = operation; 246 operation = operation->next; 247 } 248 else 249 res = PARAM_NO_MEM; 250 } 251 } 252 253 if(res != PARAM_OK && res != PARAM_NEXT_OPERATION) { 254 /* the help request isn't really an error */ 255 if(!strcmp(filename, "-")) { 256 filename = "<stdin>"; 257 } 258 if(res != PARAM_HELP_REQUESTED && 259 res != PARAM_MANUAL_REQUESTED && 260 res != PARAM_VERSION_INFO_REQUESTED && 261 res != PARAM_ENGINES_REQUESTED) { 262 const char *reason = param2text(res); 263 warnf(operation->global, "%s:%d: warning: '%s' %s\n", 264 filename, lineno, option, reason); 265 } 266 } 267 268 if(alloced_param) 269 Curl_safefree(param); 270 271 Curl_safefree(aline); 272 } 273 if(file != stdin) 274 fclose(file); 275 } 276 else 277 rc = 1; /* couldn't open the file */ 278 279 return rc; 280 } 281 282 /* 283 * Copies the string from line to the buffer at param, unquoting 284 * backslash-quoted characters and NUL-terminating the output string. 285 * Stops at the first non-backslash-quoted double quote character or the 286 * end of the input string. param must be at least as long as the input 287 * string. Returns the pointer after the last handled input character. 288 */ 289 static const char *unslashquote(const char *line, char *param) 290 { 291 while(*line && (*line != '\"')) { 292 if(*line == '\\') { 293 char out; 294 line++; 295 296 /* default is to output the letter after the backslash */ 297 switch(out = *line) { 298 case '\0': 299 continue; /* this'll break out of the loop */ 300 case 't': 301 out = '\t'; 302 break; 303 case 'n': 304 out = '\n'; 305 break; 306 case 'r': 307 out = '\r'; 308 break; 309 case 'v': 310 out = '\v'; 311 break; 312 } 313 *param++ = out; 314 line++; 315 } 316 else 317 *param++ = *line++; 318 } 319 *param = '\0'; /* always zero terminate */ 320 return line; 321 } 322 323 /* 324 * Reads a line from the given file, ensuring is NUL terminated. 325 * The pointer must be freed by the caller. 326 * NULL is returned on an out of memory condition. 327 */ 328 static char *my_get_line(FILE *fp) 329 { 330 char buf[4096]; 331 char *nl = NULL; 332 char *line = NULL; 333 334 do { 335 if(NULL == fgets(buf, sizeof(buf), fp)) 336 break; 337 if(!line) { 338 line = strdup(buf); 339 if(!line) 340 return NULL; 341 } 342 else { 343 char *ptr; 344 size_t linelen = strlen(line); 345 ptr = realloc(line, linelen + strlen(buf) + 1); 346 if(!ptr) { 347 Curl_safefree(line); 348 return NULL; 349 } 350 line = ptr; 351 strcpy(&line[linelen], buf); 352 } 353 nl = strchr(line, '\n'); 354 } while(!nl); 355 356 if(nl) 357 *nl = '\0'; 358 359 return line; 360 } 361 362
