1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2015, 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; 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 = GetModuleFileName(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 } 213 214 if(!*param) { 215 /* do this so getparameter can check for required parameters. 216 Otherwise it always thinks there's a parameter. */ 217 if(alloced_param) 218 Curl_safefree(param); 219 param = NULL; 220 } 221 222 #ifdef DEBUG_CONFIG 223 fprintf(stderr, "PARAM: \"%s\"\n",(param ? param : "(null)")); 224 #endif 225 res = getparameter(option, param, &usedarg, global, operation); 226 227 if(param && *param && !usedarg) 228 /* we passed in a parameter that wasn't used! */ 229 res = PARAM_GOT_EXTRA_PARAMETER; 230 231 if(res == PARAM_NEXT_OPERATION) { 232 if(operation->url_list && operation->url_list->url) { 233 /* Allocate the next config */ 234 operation->next = malloc(sizeof(struct OperationConfig)); 235 if(operation->next) { 236 /* Initialise the newly created config */ 237 config_init(operation->next); 238 239 /* Copy the easy handle */ 240 operation->next->easy = global->easy; 241 242 /* Set the global config pointer */ 243 operation->next->global = global; 244 245 /* Update the last operation pointer */ 246 global->last = operation->next; 247 248 /* Move onto the new config */ 249 operation->next->prev = operation; 250 operation = operation->next; 251 } 252 else 253 res = PARAM_NO_MEM; 254 } 255 } 256 257 if(res != PARAM_OK && res != PARAM_NEXT_OPERATION) { 258 /* the help request isn't really an error */ 259 if(!strcmp(filename, "-")) { 260 filename = (char *)"<stdin>"; 261 } 262 if(res != PARAM_HELP_REQUESTED && 263 res != PARAM_MANUAL_REQUESTED && 264 res != PARAM_VERSION_INFO_REQUESTED && 265 res != PARAM_ENGINES_REQUESTED) { 266 const char *reason = param2text(res); 267 warnf(operation->global, "%s:%d: warning: '%s' %s\n", 268 filename, lineno, option, reason); 269 } 270 } 271 272 if(alloced_param) 273 Curl_safefree(param); 274 275 Curl_safefree(aline); 276 } 277 if(file != stdin) 278 fclose(file); 279 } 280 else 281 rc = 1; /* couldn't open the file */ 282 283 return rc; 284 } 285 286 /* 287 * Copies the string from line to the buffer at param, unquoting 288 * backslash-quoted characters and NUL-terminating the output string. 289 * Stops at the first non-backslash-quoted double quote character or the 290 * end of the input string. param must be at least as long as the input 291 * string. Returns the pointer after the last handled input character. 292 */ 293 static const char *unslashquote(const char *line, char *param) 294 { 295 while(*line && (*line != '\"')) { 296 if(*line == '\\') { 297 char out; 298 line++; 299 300 /* default is to output the letter after the backslash */ 301 switch(out = *line) { 302 case '\0': 303 continue; /* this'll break out of the loop */ 304 case 't': 305 out = '\t'; 306 break; 307 case 'n': 308 out = '\n'; 309 break; 310 case 'r': 311 out = '\r'; 312 break; 313 case 'v': 314 out = '\v'; 315 break; 316 } 317 *param++ = out; 318 line++; 319 } 320 else 321 *param++ = *line++; 322 } 323 *param = '\0'; /* always zero terminate */ 324 return line; 325 } 326 327 /* 328 * Reads a line from the given file, ensuring is NUL terminated. 329 * The pointer must be freed by the caller. 330 * NULL is returned on an out of memory condition. 331 */ 332 static char *my_get_line(FILE *fp) 333 { 334 char buf[4096]; 335 char *nl = NULL; 336 char *line = NULL; 337 338 do { 339 if(NULL == fgets(buf, sizeof(buf), fp)) 340 break; 341 if(!line) { 342 line = strdup(buf); 343 if(!line) 344 return NULL; 345 } 346 else { 347 char *ptr; 348 size_t linelen = strlen(line); 349 ptr = realloc(line, linelen + strlen(buf) + 1); 350 if(!ptr) { 351 Curl_safefree(line); 352 return NULL; 353 } 354 line = ptr; 355 strcpy(&line[linelen], buf); 356 } 357 nl = strchr(line, '\n'); 358 } while(!nl); 359 360 if(nl) 361 *nl = '\0'; 362 363 return line; 364 } 365 366
