Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1 | /* |
| 2 | * profile.c -- A simple configuration file parsing "library in a file" |
| 3 | * |
| 4 | * The profile library was originally written by Theodore Ts'o in 1995 |
| 5 | * for use in the MIT Kerberos v5 library. It has been |
| 6 | * modified/enhanced/bug-fixed over time by other members of the MIT |
| 7 | * Kerberos team. This version was originally taken from the Kerberos |
| 8 | * v5 distribution, version 1.4.2, and radically simplified for use in |
| 9 | * e2fsprogs. (Support for locking for multi-threaded operations, |
| 10 | * being able to modify and update the configuration file |
| 11 | * programmatically, and Mac/Windows portability have been removed. |
| 12 | * It has been folded into a single C source file to make it easier to |
| 13 | * fold into an application program.) |
| 14 | * |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 15 | * Copyright (C) 2005, 2006 by Theodore Ts'o. |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 16 | * |
| 17 | * %Begin-Header% |
| 18 | * This file may be redistributed under the terms of the GNU Public |
| 19 | * License. |
| 20 | * %End-Header% |
| 21 | * |
| 22 | * Copyright (C) 1985-2005 by the Massachusetts Institute of Technology. |
| 23 | * |
| 24 | * All rights reserved. |
| 25 | * |
| 26 | * Export of this software from the United States of America may require |
| 27 | * a specific license from the United States Government. It is the |
| 28 | * responsibility of any person or organization contemplating export to |
| 29 | * obtain such a license before exporting. |
| 30 | * |
| 31 | * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and |
| 32 | * distribute this software and its documentation for any purpose and |
| 33 | * without fee is hereby granted, provided that the above copyright |
| 34 | * notice appear in all copies and that both that copyright notice and |
| 35 | * this permission notice appear in supporting documentation, and that |
| 36 | * the name of M.I.T. not be used in advertising or publicity pertaining |
| 37 | * to distribution of the software without specific, written prior |
| 38 | * permission. Furthermore if you modify this software you must label |
| 39 | * your software as modified software and not distribute it in such a |
| 40 | * fashion that it might be confused with the original MIT software. |
| 41 | * M.I.T. makes no representations about the suitability of this software |
| 42 | * for any purpose. It is provided "as is" without express or implied |
| 43 | * warranty. |
| 44 | * |
| 45 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 46 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 47 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 48 | * |
| 49 | */ |
| 50 | |
| 51 | #ifdef HAVE_UNISTD_H |
| 52 | #include <unistd.h> |
| 53 | #endif |
| 54 | #include <stdio.h> |
| 55 | #ifdef HAVE_STDLIB_H |
| 56 | #include <stdlib.h> |
| 57 | #endif |
| 58 | #include <time.h> |
| 59 | #include <string.h> |
| 60 | #include <errno.h> |
| 61 | #include <ctype.h> |
| 62 | #include <limits.h> |
| 63 | #include <stddef.h> |
| 64 | #include <sys/types.h> |
| 65 | #include <sys/stat.h> |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 66 | #include <dirent.h> |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 67 | #ifdef HAVE_PWD_H |
| 68 | #include <pwd.h> |
| 69 | #endif |
| 70 | |
Theodore Ts'o | cec7103 | 2006-01-01 21:31:45 -0500 | [diff] [blame] | 71 | #include <et/com_err.h> |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 72 | #include "profile.h" |
Theodore Ts'o | fd7ac1f | 2005-12-31 01:28:33 -0500 | [diff] [blame] | 73 | #include "prof_err.h" |
| 74 | |
Theodore Ts'o | 5582275 | 2005-12-31 16:24:07 -0500 | [diff] [blame] | 75 | #undef STAT_ONCE_PER_SECOND |
| 76 | #undef HAVE_STAT |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 77 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 78 | /* |
| 79 | * prof_int.h |
| 80 | */ |
| 81 | |
| 82 | typedef long prf_magic_t; |
| 83 | |
| 84 | /* |
| 85 | * This is the structure which stores the profile information for a |
| 86 | * particular configuration file. |
| 87 | */ |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 88 | struct _prf_file_t { |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 89 | prf_magic_t magic; |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 90 | char *filespec; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 91 | #ifdef STAT_ONCE_PER_SECOND |
| 92 | time_t last_stat; |
| 93 | #endif |
| 94 | time_t timestamp; /* time tree was last updated from file */ |
| 95 | int flags; /* r/w, dirty */ |
| 96 | int upd_serial; /* incremented when data changes */ |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 97 | struct profile_node *root; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 98 | struct _prf_file_t *next; |
| 99 | }; |
| 100 | |
| 101 | typedef struct _prf_file_t *prf_file_t; |
| 102 | |
| 103 | /* |
| 104 | * The profile flags |
| 105 | */ |
| 106 | #define PROFILE_FILE_RW 0x0001 |
| 107 | #define PROFILE_FILE_DIRTY 0x0002 |
| 108 | |
| 109 | /* |
| 110 | * This structure defines the high-level, user visible profile_t |
| 111 | * object, which is used as a handle by users who need to query some |
| 112 | * configuration file(s) |
| 113 | */ |
| 114 | struct _profile_t { |
| 115 | prf_magic_t magic; |
| 116 | prf_file_t first_file; |
| 117 | }; |
| 118 | |
| 119 | /* |
| 120 | * Used by the profile iterator in prof_get.c |
| 121 | */ |
| 122 | #define PROFILE_ITER_LIST_SECTION 0x0001 |
| 123 | #define PROFILE_ITER_SECTIONS_ONLY 0x0002 |
| 124 | #define PROFILE_ITER_RELATIONS_ONLY 0x0004 |
| 125 | |
| 126 | #define PROFILE_ITER_FINAL_SEEN 0x0100 |
| 127 | |
| 128 | /* |
| 129 | * Check if a filespec is last in a list (NULL on UNIX, invalid FSSpec on MacOS |
| 130 | */ |
| 131 | |
| 132 | #define PROFILE_LAST_FILESPEC(x) (((x) == NULL) || ((x)[0] == '\0')) |
| 133 | |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 134 | struct profile_node { |
| 135 | errcode_t magic; |
| 136 | char *name; |
| 137 | char *value; |
| 138 | int group_level; |
| 139 | int final:1; /* Indicate don't search next file */ |
| 140 | int deleted:1; |
| 141 | struct profile_node *first_child; |
| 142 | struct profile_node *parent; |
| 143 | struct profile_node *next, *prev; |
| 144 | }; |
| 145 | |
| 146 | #define CHECK_MAGIC(node) \ |
| 147 | if ((node)->magic != PROF_MAGIC_NODE) \ |
| 148 | return PROF_MAGIC_NODE; |
| 149 | |
Theodore Ts'o | 204ae37 | 2006-03-22 10:01:24 -0500 | [diff] [blame] | 150 | /* profile parser declarations */ |
| 151 | struct parse_state { |
| 152 | int state; |
| 153 | int group_level; |
| 154 | int line_num; |
| 155 | struct profile_node *root_section; |
| 156 | struct profile_node *current_section; |
| 157 | }; |
| 158 | |
| 159 | static profile_syntax_err_cb_t syntax_err_cb; |
| 160 | |
| 161 | static errcode_t parse_line(char *line, struct parse_state *state); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 162 | |
| 163 | #ifdef DEBUG_PROGRAM |
| 164 | static errcode_t profile_write_tree_file |
| 165 | (struct profile_node *root, FILE *dstfile); |
| 166 | |
| 167 | static errcode_t profile_write_tree_to_buffer |
| 168 | (struct profile_node *root, char **buf); |
| 169 | #endif |
| 170 | |
| 171 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 172 | static void profile_free_node |
| 173 | (struct profile_node *relation); |
| 174 | |
| 175 | static errcode_t profile_create_node |
| 176 | (const char *name, const char *value, |
| 177 | struct profile_node **ret_node); |
| 178 | |
| 179 | #ifdef DEBUG_PROGRAM |
| 180 | static errcode_t profile_verify_node |
| 181 | (struct profile_node *node); |
| 182 | #endif |
| 183 | |
| 184 | static errcode_t profile_add_node |
| 185 | (struct profile_node *section, |
| 186 | const char *name, const char *value, |
| 187 | struct profile_node **ret_node); |
| 188 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 189 | static errcode_t profile_find_node |
| 190 | (struct profile_node *section, |
| 191 | const char *name, const char *value, |
| 192 | int section_flag, void **state, |
| 193 | struct profile_node **node); |
| 194 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 195 | static errcode_t profile_node_iterator |
| 196 | (void **iter_p, struct profile_node **ret_node, |
| 197 | char **ret_name, char **ret_value); |
| 198 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 199 | static errcode_t profile_open_file |
| 200 | (const char * file, prf_file_t *ret_prof); |
| 201 | |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 202 | static errcode_t profile_update_file |
| 203 | (prf_file_t prf); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 204 | |
| 205 | static void profile_free_file |
| 206 | (prf_file_t profile); |
| 207 | |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 208 | static errcode_t profile_get_value(profile_t profile, const char *name, |
| 209 | const char *subname, const char *subsubname, |
| 210 | const char **ret_value); |
| 211 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 212 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 213 | /* |
| 214 | * prof_init.c --- routines that manipulate the user-visible profile_t |
| 215 | * object. |
| 216 | */ |
| 217 | |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 218 | static int compstr(const void *m1, const void *m2) |
| 219 | { |
| 220 | const char *s1 = *((const char **) m1); |
| 221 | const char *s2 = *((const char **) m2); |
| 222 | |
| 223 | return strcmp(s1, s2); |
| 224 | } |
| 225 | |
| 226 | static void free_list(char **list) |
| 227 | { |
| 228 | char **cp; |
| 229 | |
| 230 | if (list == 0) |
| 231 | return; |
| 232 | |
| 233 | for (cp = list; *cp; cp++) |
| 234 | free(*cp); |
| 235 | free(list); |
| 236 | } |
| 237 | |
| 238 | static errcode_t get_dirlist(const char *dirname, char***ret_array) |
| 239 | { |
| 240 | DIR *dir; |
| 241 | struct dirent *de; |
| 242 | struct stat st; |
| 243 | errcode_t retval; |
| 244 | char *fn, *cp; |
| 245 | char **array = 0, **new_array; |
| 246 | int max = 0, num = 0; |
| 247 | |
| 248 | dir = opendir(dirname); |
| 249 | if (!dir) |
| 250 | return errno; |
| 251 | |
| 252 | while ((de = readdir(dir)) != NULL) { |
| 253 | for (cp = de->d_name; *cp; cp++) { |
| 254 | if (!isalnum(*cp) && |
| 255 | (*cp != '-') && |
| 256 | (*cp != '_')) |
| 257 | break; |
| 258 | } |
| 259 | if (*cp) |
| 260 | continue; |
| 261 | fn = malloc(strlen(dirname) + strlen(de->d_name) + 2); |
| 262 | if (!fn) { |
| 263 | retval = ENOMEM; |
| 264 | goto errout; |
| 265 | } |
| 266 | sprintf(fn, "%s/%s", dirname, de->d_name); |
| 267 | if ((stat(fn, &st) < 0) || !S_ISREG(st.st_mode)) { |
| 268 | free(fn); |
| 269 | continue; |
| 270 | } |
| 271 | if (num >= max) { |
| 272 | max += 10; |
| 273 | new_array = realloc(array, sizeof(char *) * (max+1)); |
| 274 | if (!new_array) { |
| 275 | retval = ENOMEM; |
| 276 | goto errout; |
| 277 | } |
| 278 | array = new_array; |
| 279 | } |
| 280 | array[num++] = fn; |
| 281 | } |
| 282 | qsort(array, num, sizeof(char *), compstr); |
| 283 | array[num++] = 0; |
| 284 | *ret_array = array; |
| 285 | closedir(dir); |
| 286 | return 0; |
| 287 | errout: |
| 288 | closedir(dir); |
| 289 | free_list(array); |
| 290 | return retval; |
| 291 | } |
| 292 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 293 | errcode_t |
| 294 | profile_init(const char **files, profile_t *ret_profile) |
| 295 | { |
| 296 | const char **fs; |
| 297 | profile_t profile; |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 298 | prf_file_t new_file, *last; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 299 | errcode_t retval = 0; |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 300 | char **cpp, *cp, **array = 0; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 301 | |
| 302 | profile = malloc(sizeof(struct _profile_t)); |
| 303 | if (!profile) |
| 304 | return ENOMEM; |
| 305 | memset(profile, 0, sizeof(struct _profile_t)); |
| 306 | profile->magic = PROF_MAGIC_PROFILE; |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 307 | last = &profile->first_file; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 308 | |
| 309 | /* if the filenames list is not specified return an empty profile */ |
| 310 | if ( files ) { |
| 311 | for (fs = files; !PROFILE_LAST_FILESPEC(*fs); fs++) { |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 312 | retval = get_dirlist(*fs, &array); |
| 313 | if (retval == 0) { |
| 314 | for (cpp = array; (cp = *cpp); cpp++) { |
| 315 | retval = profile_open_file(cp, &new_file); |
| 316 | if (retval == EACCES) |
| 317 | continue; |
| 318 | if (retval) |
| 319 | goto errout; |
| 320 | *last = new_file; |
| 321 | last = &new_file->next; |
| 322 | } |
| 323 | } else if (retval != ENOTDIR) |
| 324 | goto errout; |
| 325 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 326 | retval = profile_open_file(*fs, &new_file); |
| 327 | /* if this file is missing, skip to the next */ |
| 328 | if (retval == ENOENT || retval == EACCES) { |
| 329 | continue; |
| 330 | } |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 331 | if (retval) |
| 332 | goto errout; |
| 333 | *last = new_file; |
| 334 | last = &new_file->next; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 335 | } |
| 336 | /* |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 337 | * If all the files were not found, return the appropriate error. |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 338 | */ |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 339 | if (!profile->first_file) { |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 340 | profile_release(profile); |
| 341 | return ENOENT; |
| 342 | } |
| 343 | } |
| 344 | |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 345 | free_list(array); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 346 | *ret_profile = profile; |
| 347 | return 0; |
Theodore Ts'o | 7d922f8 | 2006-01-05 03:56:19 -0500 | [diff] [blame] | 348 | errout: |
| 349 | free_list(array); |
| 350 | profile_release(profile); |
| 351 | return retval; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 352 | } |
| 353 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 354 | void |
| 355 | profile_release(profile_t profile) |
| 356 | { |
| 357 | prf_file_t p, next; |
| 358 | |
| 359 | if (!profile || profile->magic != PROF_MAGIC_PROFILE) |
| 360 | return; |
| 361 | |
| 362 | for (p = profile->first_file; p; p = next) { |
| 363 | next = p->next; |
| 364 | profile_free_file(p); |
| 365 | } |
| 366 | profile->magic = 0; |
| 367 | free(profile); |
| 368 | } |
| 369 | |
| 370 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 371 | /* |
| 372 | * prof_file.c ---- routines that manipulate an individual profile file. |
| 373 | */ |
| 374 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 375 | errcode_t profile_open_file(const char * filespec, |
| 376 | prf_file_t *ret_prof) |
| 377 | { |
| 378 | prf_file_t prf; |
| 379 | errcode_t retval; |
| 380 | char *home_env = 0; |
| 381 | unsigned int len; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 382 | char *expanded_filename; |
| 383 | |
| 384 | prf = malloc(sizeof(struct _prf_file_t)); |
| 385 | if (!prf) |
| 386 | return ENOMEM; |
| 387 | memset(prf, 0, sizeof(struct _prf_file_t)); |
| 388 | prf->magic = PROF_MAGIC_FILE; |
| 389 | |
| 390 | len = strlen(filespec)+1; |
| 391 | if (filespec[0] == '~' && filespec[1] == '/') { |
| 392 | home_env = getenv("HOME"); |
| 393 | #ifdef HAVE_PWD_H |
| 394 | if (home_env == NULL) { |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 395 | #ifdef HAVE_GETWUID_R |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 396 | struct passwd *pw, pwx; |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 397 | uid_t uid; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 398 | char pwbuf[BUFSIZ]; |
| 399 | |
| 400 | uid = getuid(); |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 401 | if (!getpwuid_r(uid, &pwx, pwbuf, sizeof(pwbuf), &pw) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 402 | && pw != NULL && pw->pw_dir[0] != 0) |
| 403 | home_env = pw->pw_dir; |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 404 | #else |
| 405 | struct passwd *pw; |
| 406 | |
| 407 | pw = getpwuid(getuid()); |
| 408 | home_env = pw->pw_dir; |
| 409 | #endif |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 410 | } |
| 411 | #endif |
| 412 | if (home_env) |
| 413 | len += strlen(home_env); |
| 414 | } |
| 415 | expanded_filename = malloc(len); |
| 416 | if (expanded_filename == 0) |
| 417 | return errno; |
| 418 | if (home_env) { |
| 419 | strcpy(expanded_filename, home_env); |
| 420 | strcat(expanded_filename, filespec+1); |
| 421 | } else |
| 422 | memcpy(expanded_filename, filespec, len); |
| 423 | |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 424 | prf->filespec = expanded_filename; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 425 | |
| 426 | retval = profile_update_file(prf); |
| 427 | if (retval) { |
| 428 | profile_free_file(prf); |
| 429 | return retval; |
| 430 | } |
| 431 | |
| 432 | *ret_prof = prf; |
| 433 | return 0; |
| 434 | } |
| 435 | |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 436 | errcode_t profile_update_file(prf_file_t prf) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 437 | { |
| 438 | errcode_t retval; |
| 439 | #ifdef HAVE_STAT |
| 440 | struct stat st; |
| 441 | #ifdef STAT_ONCE_PER_SECOND |
| 442 | time_t now; |
| 443 | #endif |
| 444 | #endif |
| 445 | FILE *f; |
Theodore Ts'o | 204ae37 | 2006-03-22 10:01:24 -0500 | [diff] [blame] | 446 | char buf[2048]; |
| 447 | struct parse_state state; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 448 | |
| 449 | #ifdef HAVE_STAT |
| 450 | #ifdef STAT_ONCE_PER_SECOND |
| 451 | now = time(0); |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 452 | if (now == prf->last_stat && prf->root != NULL) { |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 453 | return 0; |
| 454 | } |
| 455 | #endif |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 456 | if (stat(prf->filespec, &st)) { |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 457 | retval = errno; |
| 458 | return retval; |
| 459 | } |
| 460 | #ifdef STAT_ONCE_PER_SECOND |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 461 | prf->last_stat = now; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 462 | #endif |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 463 | if (st.st_mtime == prf->timestamp && prf->root != NULL) { |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 464 | return 0; |
| 465 | } |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 466 | if (prf->root) { |
| 467 | profile_free_node(prf->root); |
| 468 | prf->root = 0; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 469 | } |
| 470 | #else |
| 471 | /* |
| 472 | * If we don't have the stat() call, assume that our in-core |
| 473 | * memory image is correct. That is, we won't reread the |
| 474 | * profile file if it changes. |
| 475 | */ |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 476 | if (prf->root) { |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 477 | return 0; |
| 478 | } |
| 479 | #endif |
Theodore Ts'o | 204ae37 | 2006-03-22 10:01:24 -0500 | [diff] [blame] | 480 | memset(&state, 0, sizeof(struct parse_state)); |
| 481 | retval = profile_create_node("(root)", 0, &state.root_section); |
| 482 | if (retval) |
| 483 | return retval; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 484 | errno = 0; |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 485 | f = fopen(prf->filespec, "r"); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 486 | if (f == NULL) { |
| 487 | retval = errno; |
| 488 | if (retval == 0) |
| 489 | retval = ENOENT; |
| 490 | return retval; |
| 491 | } |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 492 | prf->upd_serial++; |
Theodore Ts'o | 204ae37 | 2006-03-22 10:01:24 -0500 | [diff] [blame] | 493 | while (!feof(f)) { |
| 494 | if (fgets(buf, sizeof(buf), f) == NULL) |
| 495 | break; |
| 496 | retval = parse_line(buf, &state); |
| 497 | if (retval) { |
| 498 | if (syntax_err_cb) |
| 499 | (syntax_err_cb)(prf->filespec, retval, |
| 500 | state.line_num); |
| 501 | fclose(f); |
| 502 | return retval; |
| 503 | } |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 504 | } |
Theodore Ts'o | 204ae37 | 2006-03-22 10:01:24 -0500 | [diff] [blame] | 505 | prf->root = state.root_section; |
| 506 | |
| 507 | fclose(f); |
| 508 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 509 | #ifdef HAVE_STAT |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 510 | prf->timestamp = st.st_mtime; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 511 | #endif |
| 512 | return 0; |
| 513 | } |
| 514 | |
| 515 | void profile_free_file(prf_file_t prf) |
| 516 | { |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 517 | if (prf->root) |
| 518 | profile_free_node(prf->root); |
| 519 | if (prf->filespec) |
| 520 | free(prf->filespec); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 521 | free(prf); |
| 522 | } |
| 523 | |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 524 | /* Begin the profile parser */ |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 525 | |
Theodore Ts'o | f5f14fc | 2006-01-04 10:32:16 -0500 | [diff] [blame] | 526 | profile_syntax_err_cb_t profile_set_syntax_err_cb(profile_syntax_err_cb_t hook) |
| 527 | { |
| 528 | profile_syntax_err_cb_t old; |
| 529 | |
| 530 | old = syntax_err_cb; |
| 531 | syntax_err_cb = hook; |
| 532 | return(old); |
| 533 | } |
| 534 | |
Theodore Ts'o | f5f14fc | 2006-01-04 10:32:16 -0500 | [diff] [blame] | 535 | #define STATE_INIT_COMMENT 0 |
| 536 | #define STATE_STD_LINE 1 |
| 537 | #define STATE_GET_OBRACE 2 |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 538 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 539 | static char *skip_over_blanks(char *cp) |
| 540 | { |
| 541 | while (*cp && isspace((int) (*cp))) |
| 542 | cp++; |
| 543 | return cp; |
| 544 | } |
| 545 | |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 546 | static int end_or_comment(char ch) |
| 547 | { |
| 548 | return (ch == 0 || ch == '#' || ch == ';'); |
| 549 | } |
| 550 | |
| 551 | static char *skip_over_nonblanks(char *cp) |
| 552 | { |
| 553 | while (!end_or_comment(*cp) && !isspace(*cp)) |
| 554 | cp++; |
| 555 | return cp; |
| 556 | } |
| 557 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 558 | static void strip_line(char *line) |
| 559 | { |
| 560 | char *p = line + strlen(line); |
| 561 | while (p > line && (p[-1] == '\n' || p[-1] == '\r')) |
| 562 | *p-- = 0; |
| 563 | } |
| 564 | |
| 565 | static void parse_quoted_string(char *str) |
| 566 | { |
| 567 | char *to, *from; |
| 568 | |
| 569 | to = from = str; |
| 570 | |
| 571 | for (to = from = str; *from && *from != '"'; to++, from++) { |
| 572 | if (*from == '\\') { |
| 573 | from++; |
| 574 | switch (*from) { |
| 575 | case 'n': |
| 576 | *to = '\n'; |
| 577 | break; |
| 578 | case 't': |
| 579 | *to = '\t'; |
| 580 | break; |
| 581 | case 'b': |
| 582 | *to = '\b'; |
| 583 | break; |
| 584 | default: |
| 585 | *to = *from; |
| 586 | } |
| 587 | continue; |
| 588 | } |
| 589 | *to = *from; |
| 590 | } |
| 591 | *to = '\0'; |
| 592 | } |
| 593 | |
Theodore Ts'o | 204ae37 | 2006-03-22 10:01:24 -0500 | [diff] [blame] | 594 | static errcode_t parse_line(char *line, struct parse_state *state) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 595 | { |
| 596 | char *cp, ch, *tag, *value; |
| 597 | char *p; |
| 598 | errcode_t retval; |
| 599 | struct profile_node *node; |
| 600 | int do_subsection = 0; |
| 601 | void *iter = 0; |
| 602 | |
Theodore Ts'o | 204ae37 | 2006-03-22 10:01:24 -0500 | [diff] [blame] | 603 | state->line_num++; |
| 604 | if (state->state == STATE_GET_OBRACE) { |
| 605 | cp = skip_over_blanks(line); |
| 606 | if (*cp != '{') |
| 607 | return PROF_MISSING_OBRACE; |
| 608 | state->state = STATE_STD_LINE; |
| 609 | return 0; |
| 610 | } |
| 611 | if (state->state == STATE_INIT_COMMENT) { |
| 612 | if (line[0] != '[') |
| 613 | return 0; |
| 614 | state->state = STATE_STD_LINE; |
| 615 | } |
| 616 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 617 | if (*line == 0) |
| 618 | return 0; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 619 | strip_line(line); |
| 620 | cp = skip_over_blanks(line); |
| 621 | ch = *cp; |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 622 | if (end_or_comment(ch)) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 623 | return 0; |
| 624 | if (ch == '[') { |
| 625 | if (state->group_level > 0) |
| 626 | return PROF_SECTION_NOTOP; |
| 627 | cp++; |
Theodore Ts'o | 22fe674 | 2006-01-06 15:04:39 -0500 | [diff] [blame] | 628 | cp = skip_over_blanks(cp); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 629 | p = strchr(cp, ']'); |
| 630 | if (p == NULL) |
| 631 | return PROF_SECTION_SYNTAX; |
Theodore Ts'o | 22fe674 | 2006-01-06 15:04:39 -0500 | [diff] [blame] | 632 | if (*cp == '"') { |
| 633 | cp++; |
| 634 | parse_quoted_string(cp); |
| 635 | } else { |
| 636 | *p-- = '\0'; |
| 637 | while (isspace(*p) && (p > cp)) |
| 638 | *p-- = '\0'; |
| 639 | if (*cp == 0) |
| 640 | return PROF_SECTION_SYNTAX; |
| 641 | } |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 642 | retval = profile_find_node(state->root_section, cp, 0, 1, |
| 643 | &iter, &state->current_section); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 644 | if (retval == PROF_NO_SECTION) { |
| 645 | retval = profile_add_node(state->root_section, |
| 646 | cp, 0, |
| 647 | &state->current_section); |
| 648 | if (retval) |
| 649 | return retval; |
| 650 | } else if (retval) |
| 651 | return retval; |
| 652 | |
| 653 | /* |
| 654 | * Finish off the rest of the line. |
| 655 | */ |
| 656 | cp = p+1; |
| 657 | if (*cp == '*') { |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 658 | state->current_section->final = 1; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 659 | cp++; |
| 660 | } |
| 661 | /* |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 662 | * Spaces or comments after ']' should not be fatal |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 663 | */ |
| 664 | cp = skip_over_blanks(cp); |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 665 | if (!end_or_comment(*cp)) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 666 | return PROF_SECTION_SYNTAX; |
| 667 | return 0; |
| 668 | } |
| 669 | if (ch == '}') { |
| 670 | if (state->group_level == 0) |
| 671 | return PROF_EXTRA_CBRACE; |
| 672 | if (*(cp+1) == '*') |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 673 | state->current_section->final = 1; |
| 674 | state->current_section = state->current_section->parent; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 675 | state->group_level--; |
| 676 | return 0; |
| 677 | } |
| 678 | /* |
| 679 | * Parse the relations |
| 680 | */ |
| 681 | tag = cp; |
| 682 | cp = strchr(cp, '='); |
| 683 | if (!cp) |
| 684 | return PROF_RELATION_SYNTAX; |
| 685 | if (cp == tag) |
| 686 | return PROF_RELATION_SYNTAX; |
| 687 | *cp = '\0'; |
Theodore Ts'o | 22fe674 | 2006-01-06 15:04:39 -0500 | [diff] [blame] | 688 | if (*tag == '"') { |
| 689 | tag++; |
| 690 | parse_quoted_string(tag); |
| 691 | } else { |
| 692 | /* Look for whitespace on left-hand side. */ |
| 693 | p = skip_over_nonblanks(tag); |
| 694 | if (*p) |
| 695 | *p++ = 0; |
| 696 | p = skip_over_blanks(p); |
| 697 | /* If we have more non-whitespace, it's an error. */ |
| 698 | if (*p) |
| 699 | return PROF_RELATION_SYNTAX; |
| 700 | } |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 701 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 702 | cp = skip_over_blanks(cp+1); |
| 703 | value = cp; |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 704 | ch = value[0]; |
| 705 | if (ch == '"') { |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 706 | value++; |
| 707 | parse_quoted_string(value); |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 708 | } else if (end_or_comment(ch)) { |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 709 | do_subsection++; |
| 710 | state->state = STATE_GET_OBRACE; |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 711 | } else if (value[0] == '{') { |
| 712 | cp = skip_over_blanks(value+1); |
| 713 | ch = *cp; |
| 714 | if (end_or_comment(ch)) |
| 715 | do_subsection++; |
| 716 | else |
| 717 | return PROF_RELATION_SYNTAX; |
| 718 | } else { |
| 719 | cp = skip_over_nonblanks(value); |
| 720 | p = skip_over_blanks(cp); |
| 721 | ch = *p; |
| 722 | *cp = 0; |
| 723 | if (!end_or_comment(ch)) |
| 724 | return PROF_RELATION_SYNTAX; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 725 | } |
| 726 | if (do_subsection) { |
| 727 | p = strchr(tag, '*'); |
| 728 | if (p) |
| 729 | *p = '\0'; |
| 730 | retval = profile_add_node(state->current_section, |
| 731 | tag, 0, &state->current_section); |
| 732 | if (retval) |
| 733 | return retval; |
| 734 | if (p) |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 735 | state->current_section->final = 1; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 736 | state->group_level++; |
| 737 | return 0; |
| 738 | } |
| 739 | p = strchr(tag, '*'); |
| 740 | if (p) |
| 741 | *p = '\0'; |
| 742 | profile_add_node(state->current_section, tag, value, &node); |
| 743 | if (p) |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 744 | node->final = 1; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 745 | return 0; |
| 746 | } |
| 747 | |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 748 | #ifdef DEBUG_PROGRAM |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 749 | /* |
| 750 | * Return TRUE if the string begins or ends with whitespace |
| 751 | */ |
| 752 | static int need_double_quotes(char *str) |
| 753 | { |
| 754 | if (!str || !*str) |
| 755 | return 0; |
| 756 | if (isspace((int) (*str)) ||isspace((int) (*(str + strlen(str) - 1)))) |
| 757 | return 1; |
Theodore Ts'o | 95a8d1d | 2006-01-05 00:47:34 -0500 | [diff] [blame] | 758 | if (strchr(str, '\n') || strchr(str, '\t') || strchr(str, '\b') || |
| 759 | strchr(str, ' ') || strchr(str, '#') || strchr(str, ';')) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 760 | return 1; |
| 761 | return 0; |
| 762 | } |
| 763 | |
| 764 | /* |
| 765 | * Output a string with double quotes, doing appropriate backquoting |
| 766 | * of characters as necessary. |
| 767 | */ |
| 768 | static void output_quoted_string(char *str, void (*cb)(const char *,void *), |
| 769 | void *data) |
| 770 | { |
| 771 | char ch; |
| 772 | char buf[2]; |
| 773 | |
| 774 | cb("\"", data); |
| 775 | if (!str) { |
| 776 | cb("\"", data); |
| 777 | return; |
| 778 | } |
| 779 | buf[1] = 0; |
| 780 | while ((ch = *str++)) { |
| 781 | switch (ch) { |
| 782 | case '\\': |
| 783 | cb("\\\\", data); |
| 784 | break; |
| 785 | case '\n': |
| 786 | cb("\\n", data); |
| 787 | break; |
| 788 | case '\t': |
| 789 | cb("\\t", data); |
| 790 | break; |
| 791 | case '\b': |
| 792 | cb("\\b", data); |
| 793 | break; |
| 794 | default: |
| 795 | /* This would be a lot faster if we scanned |
| 796 | forward for the next "interesting" |
| 797 | character. */ |
| 798 | buf[0] = ch; |
| 799 | cb(buf, data); |
| 800 | break; |
| 801 | } |
| 802 | } |
| 803 | cb("\"", data); |
| 804 | } |
| 805 | |
| 806 | #ifndef EOL |
| 807 | #define EOL "\n" |
| 808 | #endif |
| 809 | |
| 810 | /* Errors should be returned, not ignored! */ |
| 811 | static void dump_profile(struct profile_node *root, int level, |
| 812 | void (*cb)(const char *, void *), void *data) |
| 813 | { |
| 814 | int i; |
| 815 | struct profile_node *p; |
| 816 | void *iter; |
| 817 | long retval; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 818 | |
| 819 | iter = 0; |
| 820 | do { |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 821 | retval = profile_find_node(root, 0, 0, 0, &iter, &p); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 822 | if (retval) |
| 823 | break; |
| 824 | for (i=0; i < level; i++) |
| 825 | cb("\t", data); |
Theodore Ts'o | 22fe674 | 2006-01-06 15:04:39 -0500 | [diff] [blame] | 826 | if (need_double_quotes(p->name)) |
| 827 | output_quoted_string(p->name, cb, data); |
| 828 | else |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 829 | cb(p->name, data); |
Theodore Ts'o | 22fe674 | 2006-01-06 15:04:39 -0500 | [diff] [blame] | 830 | cb(" = ", data); |
| 831 | if (need_double_quotes(p->value)) |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 832 | output_quoted_string(p->value, cb, data); |
Theodore Ts'o | 22fe674 | 2006-01-06 15:04:39 -0500 | [diff] [blame] | 833 | else |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 834 | cb(p->value, data); |
Theodore Ts'o | 22fe674 | 2006-01-06 15:04:39 -0500 | [diff] [blame] | 835 | cb(EOL, data); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 836 | } while (iter != 0); |
| 837 | |
| 838 | iter = 0; |
| 839 | do { |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 840 | retval = profile_find_node(root, 0, 0, 1, &iter, &p); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 841 | if (retval) |
| 842 | break; |
| 843 | if (level == 0) { /* [xxx] */ |
| 844 | cb("[", data); |
Theodore Ts'o | 22fe674 | 2006-01-06 15:04:39 -0500 | [diff] [blame] | 845 | if (need_double_quotes(p->name)) |
| 846 | output_quoted_string(p->name, cb, data); |
| 847 | else |
| 848 | cb(p->name, data); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 849 | cb("]", data); |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 850 | cb(p->final ? "*" : "", data); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 851 | cb(EOL, data); |
| 852 | dump_profile(p, level+1, cb, data); |
| 853 | cb(EOL, data); |
| 854 | } else { /* xxx = { ... } */ |
| 855 | for (i=0; i < level; i++) |
| 856 | cb("\t", data); |
Theodore Ts'o | 22fe674 | 2006-01-06 15:04:39 -0500 | [diff] [blame] | 857 | if (need_double_quotes(p->name)) |
| 858 | output_quoted_string(p->name, cb, data); |
| 859 | else |
| 860 | cb(p->name, data); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 861 | cb(" = {", data); |
| 862 | cb(EOL, data); |
| 863 | dump_profile(p, level+1, cb, data); |
| 864 | for (i=0; i < level; i++) |
| 865 | cb("\t", data); |
| 866 | cb("}", data); |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 867 | cb(p->final ? "*" : "", data); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 868 | cb(EOL, data); |
| 869 | } |
| 870 | } while (iter != 0); |
| 871 | } |
| 872 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 873 | static void dump_profile_to_file_cb(const char *str, void *data) |
| 874 | { |
| 875 | fputs(str, data); |
| 876 | } |
| 877 | |
| 878 | errcode_t profile_write_tree_file(struct profile_node *root, FILE *dstfile) |
| 879 | { |
| 880 | dump_profile(root, 0, dump_profile_to_file_cb, dstfile); |
| 881 | return 0; |
| 882 | } |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 883 | |
| 884 | struct prof_buf { |
| 885 | char *base; |
| 886 | size_t cur, max; |
| 887 | int err; |
| 888 | }; |
| 889 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 890 | static void add_data_to_buffer(struct prof_buf *b, const void *d, size_t len) |
| 891 | { |
| 892 | if (b->err) |
| 893 | return; |
| 894 | if (b->max - b->cur < len) { |
| 895 | size_t newsize; |
| 896 | char *newptr; |
| 897 | |
| 898 | newsize = b->max + (b->max >> 1) + len + 1024; |
| 899 | newptr = realloc(b->base, newsize); |
| 900 | if (newptr == NULL) { |
| 901 | b->err = 1; |
| 902 | return; |
| 903 | } |
| 904 | b->base = newptr; |
| 905 | b->max = newsize; |
| 906 | } |
| 907 | memcpy(b->base + b->cur, d, len); |
| 908 | b->cur += len; /* ignore overflow */ |
| 909 | } |
| 910 | |
| 911 | static void dump_profile_to_buffer_cb(const char *str, void *data) |
| 912 | { |
| 913 | add_data_to_buffer((struct prof_buf *)data, str, strlen(str)); |
| 914 | } |
| 915 | |
| 916 | errcode_t profile_write_tree_to_buffer(struct profile_node *root, |
| 917 | char **buf) |
| 918 | { |
| 919 | struct prof_buf prof_buf = { 0, 0, 0, 0 }; |
| 920 | |
| 921 | dump_profile(root, 0, dump_profile_to_buffer_cb, &prof_buf); |
| 922 | if (prof_buf.err) { |
| 923 | *buf = NULL; |
| 924 | return ENOMEM; |
| 925 | } |
| 926 | add_data_to_buffer(&prof_buf, "", 1); /* append nul */ |
| 927 | if (prof_buf.max - prof_buf.cur > (prof_buf.max >> 3)) { |
| 928 | char *newptr = realloc(prof_buf.base, prof_buf.cur); |
| 929 | if (newptr) |
| 930 | prof_buf.base = newptr; |
| 931 | } |
| 932 | *buf = prof_buf.base; |
| 933 | return 0; |
| 934 | } |
| 935 | #endif |
| 936 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 937 | /* |
| 938 | * prof_tree.c --- these routines maintain the parse tree of the |
| 939 | * config file. |
| 940 | * |
| 941 | * All of the details of how the tree is stored is abstracted away in |
| 942 | * this file; all of the other profile routines build, access, and |
| 943 | * modify the tree via the accessor functions found in this file. |
| 944 | * |
| 945 | * Each node may represent either a relation or a section header. |
| 946 | * |
| 947 | * A section header must have its value field set to 0, and may a one |
| 948 | * or more child nodes, pointed to by first_child. |
| 949 | * |
| 950 | * A relation has as its value a pointer to allocated memory |
| 951 | * containing a string. Its first_child pointer must be null. |
| 952 | * |
| 953 | */ |
| 954 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 955 | /* |
| 956 | * Free a node, and any children |
| 957 | */ |
| 958 | void profile_free_node(struct profile_node *node) |
| 959 | { |
| 960 | struct profile_node *child, *next; |
| 961 | |
| 962 | if (node->magic != PROF_MAGIC_NODE) |
| 963 | return; |
| 964 | |
| 965 | if (node->name) |
| 966 | free(node->name); |
| 967 | if (node->value) |
| 968 | free(node->value); |
| 969 | |
| 970 | for (child=node->first_child; child; child = next) { |
| 971 | next = child->next; |
| 972 | profile_free_node(child); |
| 973 | } |
| 974 | node->magic = 0; |
| 975 | |
| 976 | free(node); |
| 977 | } |
| 978 | |
| 979 | #ifndef HAVE_STRDUP |
| 980 | #undef strdup |
| 981 | #define strdup MYstrdup |
| 982 | static char *MYstrdup (const char *s) |
| 983 | { |
| 984 | size_t sz = strlen(s) + 1; |
| 985 | char *p = malloc(sz); |
| 986 | if (p != 0) |
| 987 | memcpy(p, s, sz); |
| 988 | return p; |
| 989 | } |
| 990 | #endif |
| 991 | |
| 992 | /* |
| 993 | * Create a node |
| 994 | */ |
| 995 | errcode_t profile_create_node(const char *name, const char *value, |
| 996 | struct profile_node **ret_node) |
| 997 | { |
| 998 | struct profile_node *new; |
| 999 | |
| 1000 | new = malloc(sizeof(struct profile_node)); |
| 1001 | if (!new) |
| 1002 | return ENOMEM; |
| 1003 | memset(new, 0, sizeof(struct profile_node)); |
| 1004 | new->name = strdup(name); |
| 1005 | if (new->name == 0) { |
| 1006 | profile_free_node(new); |
| 1007 | return ENOMEM; |
| 1008 | } |
| 1009 | if (value) { |
| 1010 | new->value = strdup(value); |
| 1011 | if (new->value == 0) { |
| 1012 | profile_free_node(new); |
| 1013 | return ENOMEM; |
| 1014 | } |
| 1015 | } |
| 1016 | new->magic = PROF_MAGIC_NODE; |
| 1017 | |
| 1018 | *ret_node = new; |
| 1019 | return 0; |
| 1020 | } |
| 1021 | |
| 1022 | /* |
| 1023 | * This function verifies that all of the representation invarients of |
| 1024 | * the profile are true. If not, we have a programming bug somewhere, |
| 1025 | * probably in this file. |
| 1026 | */ |
| 1027 | #ifdef DEBUG_PROGRAM |
| 1028 | errcode_t profile_verify_node(struct profile_node *node) |
| 1029 | { |
| 1030 | struct profile_node *p, *last; |
| 1031 | errcode_t retval; |
| 1032 | |
| 1033 | CHECK_MAGIC(node); |
| 1034 | |
| 1035 | if (node->value && node->first_child) |
| 1036 | return PROF_SECTION_WITH_VALUE; |
| 1037 | |
| 1038 | last = 0; |
| 1039 | for (p = node->first_child; p; last = p, p = p->next) { |
| 1040 | if (p->prev != last) |
| 1041 | return PROF_BAD_LINK_LIST; |
| 1042 | if (last && (last->next != p)) |
| 1043 | return PROF_BAD_LINK_LIST; |
| 1044 | if (node->group_level+1 != p->group_level) |
| 1045 | return PROF_BAD_GROUP_LVL; |
| 1046 | if (p->parent != node) |
| 1047 | return PROF_BAD_PARENT_PTR; |
| 1048 | retval = profile_verify_node(p); |
| 1049 | if (retval) |
| 1050 | return retval; |
| 1051 | } |
| 1052 | return 0; |
| 1053 | } |
| 1054 | #endif |
| 1055 | |
| 1056 | /* |
| 1057 | * Add a node to a particular section |
| 1058 | */ |
| 1059 | errcode_t profile_add_node(struct profile_node *section, const char *name, |
| 1060 | const char *value, struct profile_node **ret_node) |
| 1061 | { |
| 1062 | errcode_t retval; |
| 1063 | struct profile_node *p, *last, *new; |
| 1064 | |
| 1065 | CHECK_MAGIC(section); |
| 1066 | |
| 1067 | if (section->value) |
| 1068 | return PROF_ADD_NOT_SECTION; |
| 1069 | |
| 1070 | /* |
| 1071 | * Find the place to insert the new node. We look for the |
| 1072 | * place *after* the last match of the node name, since |
| 1073 | * order matters. |
| 1074 | */ |
| 1075 | for (p=section->first_child, last = 0; p; last = p, p = p->next) { |
| 1076 | int cmp; |
| 1077 | cmp = strcmp(p->name, name); |
| 1078 | if (cmp > 0) |
| 1079 | break; |
| 1080 | } |
| 1081 | retval = profile_create_node(name, value, &new); |
| 1082 | if (retval) |
| 1083 | return retval; |
| 1084 | new->group_level = section->group_level+1; |
| 1085 | new->deleted = 0; |
| 1086 | new->parent = section; |
| 1087 | new->prev = last; |
| 1088 | new->next = p; |
| 1089 | if (p) |
| 1090 | p->prev = new; |
| 1091 | if (last) |
| 1092 | last->next = new; |
| 1093 | else |
| 1094 | section->first_child = new; |
| 1095 | if (ret_node) |
| 1096 | *ret_node = new; |
| 1097 | return 0; |
| 1098 | } |
| 1099 | |
| 1100 | /* |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1101 | * Iterate through the section, returning the nodes which match |
| 1102 | * the given name. If name is NULL, then interate through all the |
| 1103 | * nodes in the section. If section_flag is non-zero, only return the |
| 1104 | * section which matches the name; don't return relations. If value |
| 1105 | * is non-NULL, then only return relations which match the requested |
| 1106 | * value. (The value argument is ignored if section_flag is non-zero.) |
| 1107 | * |
| 1108 | * The first time this routine is called, the state pointer must be |
| 1109 | * null. When this profile_find_node_relation() returns, if the state |
| 1110 | * pointer is non-NULL, then this routine should be called again. |
| 1111 | * (This won't happen if section_flag is non-zero, obviously.) |
| 1112 | * |
| 1113 | */ |
| 1114 | errcode_t profile_find_node(struct profile_node *section, const char *name, |
| 1115 | const char *value, int section_flag, void **state, |
| 1116 | struct profile_node **node) |
| 1117 | { |
| 1118 | struct profile_node *p; |
| 1119 | |
| 1120 | CHECK_MAGIC(section); |
| 1121 | p = *state; |
| 1122 | if (p) { |
| 1123 | CHECK_MAGIC(p); |
| 1124 | } else |
| 1125 | p = section->first_child; |
| 1126 | |
| 1127 | for (; p; p = p->next) { |
| 1128 | if (name && (strcmp(p->name, name))) |
| 1129 | continue; |
| 1130 | if (section_flag) { |
| 1131 | if (p->value) |
| 1132 | continue; |
| 1133 | } else { |
| 1134 | if (!p->value) |
| 1135 | continue; |
| 1136 | if (value && (strcmp(p->value, value))) |
| 1137 | continue; |
| 1138 | } |
| 1139 | if (p->deleted) |
| 1140 | continue; |
| 1141 | /* A match! */ |
| 1142 | if (node) |
| 1143 | *node = p; |
| 1144 | break; |
| 1145 | } |
| 1146 | if (p == 0) { |
| 1147 | *state = 0; |
| 1148 | return section_flag ? PROF_NO_SECTION : PROF_NO_RELATION; |
| 1149 | } |
| 1150 | /* |
| 1151 | * OK, we've found one match; now let's try to find another |
| 1152 | * one. This way, if we return a non-zero state pointer, |
| 1153 | * there's guaranteed to be another match that's returned. |
| 1154 | */ |
| 1155 | for (p = p->next; p; p = p->next) { |
| 1156 | if (name && (strcmp(p->name, name))) |
| 1157 | continue; |
| 1158 | if (section_flag) { |
| 1159 | if (p->value) |
| 1160 | continue; |
| 1161 | } else { |
| 1162 | if (!p->value) |
| 1163 | continue; |
| 1164 | if (value && (strcmp(p->value, value))) |
| 1165 | continue; |
| 1166 | } |
| 1167 | /* A match! */ |
| 1168 | break; |
| 1169 | } |
| 1170 | *state = p; |
| 1171 | return 0; |
| 1172 | } |
| 1173 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1174 | /* |
| 1175 | * This is a general-purpose iterator for returning all nodes that |
| 1176 | * match the specified name array. |
| 1177 | */ |
| 1178 | struct profile_iterator { |
| 1179 | prf_magic_t magic; |
| 1180 | profile_t profile; |
| 1181 | int flags; |
| 1182 | const char *const *names; |
| 1183 | const char *name; |
| 1184 | prf_file_t file; |
| 1185 | int file_serial; |
| 1186 | int done_idx; |
| 1187 | struct profile_node *node; |
| 1188 | int num; |
| 1189 | }; |
| 1190 | |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1191 | errcode_t |
| 1192 | profile_iterator_create(profile_t profile, const char *const *names, int flags, |
| 1193 | void **ret_iter) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1194 | { |
| 1195 | struct profile_iterator *iter; |
| 1196 | int done_idx = 0; |
| 1197 | |
| 1198 | if (profile == 0) |
| 1199 | return PROF_NO_PROFILE; |
| 1200 | if (profile->magic != PROF_MAGIC_PROFILE) |
| 1201 | return PROF_MAGIC_PROFILE; |
| 1202 | if (!names) |
| 1203 | return PROF_BAD_NAMESET; |
| 1204 | if (!(flags & PROFILE_ITER_LIST_SECTION)) { |
| 1205 | if (!names[0]) |
| 1206 | return PROF_BAD_NAMESET; |
| 1207 | done_idx = 1; |
| 1208 | } |
| 1209 | |
| 1210 | if ((iter = malloc(sizeof(struct profile_iterator))) == NULL) |
| 1211 | return ENOMEM; |
| 1212 | |
| 1213 | iter->magic = PROF_MAGIC_ITERATOR; |
| 1214 | iter->profile = profile; |
| 1215 | iter->names = names; |
| 1216 | iter->flags = flags; |
| 1217 | iter->file = profile->first_file; |
| 1218 | iter->done_idx = done_idx; |
| 1219 | iter->node = 0; |
| 1220 | iter->num = 0; |
| 1221 | *ret_iter = iter; |
| 1222 | return 0; |
| 1223 | } |
| 1224 | |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1225 | void profile_iterator_free(void **iter_p) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1226 | { |
| 1227 | struct profile_iterator *iter; |
| 1228 | |
| 1229 | if (!iter_p) |
| 1230 | return; |
| 1231 | iter = *iter_p; |
| 1232 | if (!iter || iter->magic != PROF_MAGIC_ITERATOR) |
| 1233 | return; |
| 1234 | free(iter); |
| 1235 | *iter_p = 0; |
| 1236 | } |
| 1237 | |
| 1238 | /* |
| 1239 | * Note: the returned character strings in ret_name and ret_value |
| 1240 | * points to the stored character string in the parse string. Before |
| 1241 | * this string value is returned to a calling application |
| 1242 | * (profile_node_iterator is not an exported interface), it should be |
| 1243 | * strdup()'ed. |
| 1244 | */ |
| 1245 | errcode_t profile_node_iterator(void **iter_p, struct profile_node **ret_node, |
| 1246 | char **ret_name, char **ret_value) |
| 1247 | { |
| 1248 | struct profile_iterator *iter = *iter_p; |
| 1249 | struct profile_node *section, *p; |
| 1250 | const char *const *cpp; |
| 1251 | errcode_t retval; |
| 1252 | int skip_num = 0; |
| 1253 | |
| 1254 | if (!iter || iter->magic != PROF_MAGIC_ITERATOR) |
| 1255 | return PROF_MAGIC_ITERATOR; |
| 1256 | if (iter->file && iter->file->magic != PROF_MAGIC_FILE) |
| 1257 | return PROF_MAGIC_FILE; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1258 | /* |
| 1259 | * If the file has changed, then the node pointer is invalid, |
| 1260 | * so we'll have search the file again looking for it. |
| 1261 | */ |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 1262 | if (iter->node && (iter->file->upd_serial != iter->file_serial)) { |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1263 | iter->flags &= ~PROFILE_ITER_FINAL_SEEN; |
| 1264 | skip_num = iter->num; |
| 1265 | iter->node = 0; |
| 1266 | } |
| 1267 | if (iter->node && iter->node->magic != PROF_MAGIC_NODE) { |
| 1268 | return PROF_MAGIC_NODE; |
| 1269 | } |
| 1270 | get_new_file: |
| 1271 | if (iter->node == 0) { |
| 1272 | if (iter->file == 0 || |
| 1273 | (iter->flags & PROFILE_ITER_FINAL_SEEN)) { |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1274 | profile_iterator_free(iter_p); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1275 | if (ret_node) |
| 1276 | *ret_node = 0; |
| 1277 | if (ret_name) |
| 1278 | *ret_name = 0; |
| 1279 | if (ret_value) |
| 1280 | *ret_value =0; |
| 1281 | return 0; |
| 1282 | } |
| 1283 | if ((retval = profile_update_file(iter->file))) { |
| 1284 | if (retval == ENOENT || retval == EACCES) { |
| 1285 | /* XXX memory leak? */ |
| 1286 | iter->file = iter->file->next; |
| 1287 | skip_num = 0; |
| 1288 | retval = 0; |
| 1289 | goto get_new_file; |
| 1290 | } else { |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1291 | profile_iterator_free(iter_p); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1292 | return retval; |
| 1293 | } |
| 1294 | } |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 1295 | iter->file_serial = iter->file->upd_serial; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1296 | /* |
| 1297 | * Find the section to list if we are a LIST_SECTION, |
| 1298 | * or find the containing section if not. |
| 1299 | */ |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 1300 | section = iter->file->root; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1301 | for (cpp = iter->names; cpp[iter->done_idx]; cpp++) { |
| 1302 | for (p=section->first_child; p; p = p->next) { |
| 1303 | if (!strcmp(p->name, *cpp) && !p->value) |
| 1304 | break; |
| 1305 | } |
| 1306 | if (!p) { |
| 1307 | section = 0; |
| 1308 | break; |
| 1309 | } |
| 1310 | section = p; |
| 1311 | if (p->final) |
| 1312 | iter->flags |= PROFILE_ITER_FINAL_SEEN; |
| 1313 | } |
| 1314 | if (!section) { |
| 1315 | iter->file = iter->file->next; |
| 1316 | skip_num = 0; |
| 1317 | goto get_new_file; |
| 1318 | } |
| 1319 | iter->name = *cpp; |
| 1320 | iter->node = section->first_child; |
| 1321 | } |
| 1322 | /* |
| 1323 | * OK, now we know iter->node is set up correctly. Let's do |
| 1324 | * the search. |
| 1325 | */ |
| 1326 | for (p = iter->node; p; p = p->next) { |
| 1327 | if (iter->name && strcmp(p->name, iter->name)) |
| 1328 | continue; |
| 1329 | if ((iter->flags & PROFILE_ITER_SECTIONS_ONLY) && |
| 1330 | p->value) |
| 1331 | continue; |
| 1332 | if ((iter->flags & PROFILE_ITER_RELATIONS_ONLY) && |
| 1333 | !p->value) |
| 1334 | continue; |
| 1335 | if (skip_num > 0) { |
| 1336 | skip_num--; |
| 1337 | continue; |
| 1338 | } |
| 1339 | if (p->deleted) |
| 1340 | continue; |
| 1341 | break; |
| 1342 | } |
| 1343 | iter->num++; |
| 1344 | if (!p) { |
| 1345 | iter->file = iter->file->next; |
| 1346 | if (iter->file) { |
| 1347 | } |
| 1348 | iter->node = 0; |
| 1349 | skip_num = 0; |
| 1350 | goto get_new_file; |
| 1351 | } |
| 1352 | if ((iter->node = p->next) == NULL) |
| 1353 | iter->file = iter->file->next; |
| 1354 | if (ret_node) |
| 1355 | *ret_node = p; |
| 1356 | if (ret_name) |
| 1357 | *ret_name = p->name; |
| 1358 | if (ret_value) |
| 1359 | *ret_value = p->value; |
| 1360 | return 0; |
| 1361 | } |
| 1362 | |
| 1363 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1364 | /* |
| 1365 | * prof_get.c --- routines that expose the public interfaces for |
| 1366 | * querying items from the profile. |
| 1367 | * |
| 1368 | */ |
| 1369 | |
| 1370 | /* |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1371 | * This function only gets the first value from the file; it is a |
| 1372 | * helper function for profile_get_string, profile_get_integer, etc. |
| 1373 | */ |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1374 | errcode_t profile_get_value(profile_t profile, const char *name, |
| 1375 | const char *subname, const char *subsubname, |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1376 | const char **ret_value) |
| 1377 | { |
| 1378 | errcode_t retval; |
| 1379 | void *state; |
| 1380 | char *value; |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1381 | const char *names[4]; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1382 | |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1383 | names[0] = name; |
| 1384 | names[1] = subname; |
| 1385 | names[2] = subsubname; |
| 1386 | names[3] = 0; |
| 1387 | |
| 1388 | if ((retval = profile_iterator_create(profile, names, |
| 1389 | PROFILE_ITER_RELATIONS_ONLY, |
| 1390 | &state))) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1391 | return retval; |
| 1392 | |
| 1393 | if ((retval = profile_node_iterator(&state, 0, 0, &value))) |
| 1394 | goto cleanup; |
| 1395 | |
| 1396 | if (value) |
| 1397 | *ret_value = value; |
| 1398 | else |
| 1399 | retval = PROF_NO_RELATION; |
| 1400 | |
| 1401 | cleanup: |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1402 | profile_iterator_free(&state); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1403 | return retval; |
| 1404 | } |
| 1405 | |
| 1406 | errcode_t |
| 1407 | profile_get_string(profile_t profile, const char *name, const char *subname, |
| 1408 | const char *subsubname, const char *def_val, |
| 1409 | char **ret_string) |
| 1410 | { |
| 1411 | const char *value; |
| 1412 | errcode_t retval; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1413 | |
| 1414 | if (profile) { |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1415 | retval = profile_get_value(profile, name, subname, |
| 1416 | subsubname, &value); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1417 | if (retval == PROF_NO_SECTION || retval == PROF_NO_RELATION) |
| 1418 | value = def_val; |
| 1419 | else if (retval) |
| 1420 | return retval; |
| 1421 | } else |
| 1422 | value = def_val; |
| 1423 | |
| 1424 | if (value) { |
| 1425 | *ret_string = malloc(strlen(value)+1); |
| 1426 | if (*ret_string == 0) |
| 1427 | return ENOMEM; |
| 1428 | strcpy(*ret_string, value); |
| 1429 | } else |
| 1430 | *ret_string = 0; |
| 1431 | return 0; |
| 1432 | } |
| 1433 | |
| 1434 | errcode_t |
| 1435 | profile_get_integer(profile_t profile, const char *name, const char *subname, |
| 1436 | const char *subsubname, int def_val, int *ret_int) |
| 1437 | { |
| 1438 | const char *value; |
| 1439 | errcode_t retval; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1440 | char *end_value; |
| 1441 | long ret_long; |
| 1442 | |
| 1443 | *ret_int = def_val; |
| 1444 | if (profile == 0) |
| 1445 | return 0; |
| 1446 | |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1447 | retval = profile_get_value(profile, name, subname, subsubname, &value); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1448 | if (retval == PROF_NO_SECTION || retval == PROF_NO_RELATION) { |
| 1449 | *ret_int = def_val; |
| 1450 | return 0; |
| 1451 | } else if (retval) |
| 1452 | return retval; |
| 1453 | |
| 1454 | if (value[0] == 0) |
| 1455 | /* Empty string is no good. */ |
| 1456 | return PROF_BAD_INTEGER; |
| 1457 | errno = 0; |
| 1458 | ret_long = strtol (value, &end_value, 10); |
| 1459 | |
| 1460 | /* Overflow or underflow. */ |
| 1461 | if ((ret_long == LONG_MIN || ret_long == LONG_MAX) && errno != 0) |
| 1462 | return PROF_BAD_INTEGER; |
| 1463 | /* Value outside "int" range. */ |
| 1464 | if ((long) (int) ret_long != ret_long) |
| 1465 | return PROF_BAD_INTEGER; |
| 1466 | /* Garbage in string. */ |
| 1467 | if (end_value != value + strlen (value)) |
| 1468 | return PROF_BAD_INTEGER; |
| 1469 | |
| 1470 | |
| 1471 | *ret_int = ret_long; |
| 1472 | return 0; |
| 1473 | } |
| 1474 | |
| 1475 | static const char *const conf_yes[] = { |
| 1476 | "y", "yes", "true", "t", "1", "on", |
| 1477 | 0, |
| 1478 | }; |
| 1479 | |
| 1480 | static const char *const conf_no[] = { |
| 1481 | "n", "no", "false", "nil", "0", "off", |
| 1482 | 0, |
| 1483 | }; |
| 1484 | |
| 1485 | static errcode_t |
| 1486 | profile_parse_boolean(const char *s, int *ret_boolean) |
| 1487 | { |
| 1488 | const char *const *p; |
| 1489 | |
| 1490 | if (ret_boolean == NULL) |
| 1491 | return PROF_EINVAL; |
| 1492 | |
| 1493 | for(p=conf_yes; *p; p++) { |
| 1494 | if (!strcasecmp(*p,s)) { |
| 1495 | *ret_boolean = 1; |
| 1496 | return 0; |
| 1497 | } |
| 1498 | } |
| 1499 | |
| 1500 | for(p=conf_no; *p; p++) { |
| 1501 | if (!strcasecmp(*p,s)) { |
| 1502 | *ret_boolean = 0; |
| 1503 | return 0; |
| 1504 | } |
| 1505 | } |
| 1506 | |
| 1507 | return PROF_BAD_BOOLEAN; |
| 1508 | } |
| 1509 | |
| 1510 | errcode_t |
| 1511 | profile_get_boolean(profile_t profile, const char *name, const char *subname, |
| 1512 | const char *subsubname, int def_val, int *ret_boolean) |
| 1513 | { |
| 1514 | const char *value; |
| 1515 | errcode_t retval; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1516 | |
| 1517 | if (profile == 0) { |
| 1518 | *ret_boolean = def_val; |
| 1519 | return 0; |
| 1520 | } |
| 1521 | |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1522 | retval = profile_get_value(profile, name, subname, subsubname, &value); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1523 | if (retval == PROF_NO_SECTION || retval == PROF_NO_RELATION) { |
| 1524 | *ret_boolean = def_val; |
| 1525 | return 0; |
| 1526 | } else if (retval) |
| 1527 | return retval; |
| 1528 | |
| 1529 | return profile_parse_boolean (value, ret_boolean); |
| 1530 | } |
| 1531 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1532 | errcode_t |
| 1533 | profile_iterator(void **iter_p, char **ret_name, char **ret_value) |
| 1534 | { |
| 1535 | char *name, *value; |
| 1536 | errcode_t retval; |
| 1537 | |
| 1538 | retval = profile_node_iterator(iter_p, 0, &name, &value); |
| 1539 | if (retval) |
| 1540 | return retval; |
| 1541 | |
| 1542 | if (ret_name) { |
| 1543 | if (name) { |
| 1544 | *ret_name = malloc(strlen(name)+1); |
| 1545 | if (!*ret_name) |
| 1546 | return ENOMEM; |
| 1547 | strcpy(*ret_name, name); |
| 1548 | } else |
| 1549 | *ret_name = 0; |
| 1550 | } |
| 1551 | if (ret_value) { |
| 1552 | if (value) { |
| 1553 | *ret_value = malloc(strlen(value)+1); |
| 1554 | if (!*ret_value) { |
| 1555 | if (ret_name) { |
| 1556 | free(*ret_name); |
| 1557 | *ret_name = 0; |
| 1558 | } |
| 1559 | return ENOMEM; |
| 1560 | } |
| 1561 | strcpy(*ret_value, value); |
| 1562 | } else |
| 1563 | *ret_value = 0; |
| 1564 | } |
| 1565 | return 0; |
| 1566 | } |
| 1567 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1568 | #ifdef DEBUG_PROGRAM |
| 1569 | |
| 1570 | /* |
| 1571 | * test_profile.c --- testing program for the profile routine |
| 1572 | */ |
| 1573 | |
| 1574 | #include "argv_parse.h" |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1575 | #include "profile_helpers.h" |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1576 | |
| 1577 | const char *program_name = "test_profile"; |
| 1578 | |
| 1579 | #define PRINT_VALUE 1 |
| 1580 | #define PRINT_VALUES 2 |
| 1581 | |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 1582 | static void do_cmd(profile_t profile, char **argv) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1583 | { |
| 1584 | errcode_t retval; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1585 | const char **names, *value; |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 1586 | char **values, **cpp; |
| 1587 | char *cmd; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1588 | int print_status; |
| 1589 | |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 1590 | cmd = *(argv); |
| 1591 | names = (const char **) argv + 1; |
| 1592 | print_status = 0; |
| 1593 | retval = 0; |
| 1594 | if (cmd == 0) |
| 1595 | return; |
| 1596 | if (!strcmp(cmd, "query")) { |
| 1597 | retval = profile_get_values(profile, names, &values); |
| 1598 | print_status = PRINT_VALUES; |
| 1599 | } else if (!strcmp(cmd, "query1")) { |
Theodore Ts'o | 9a4c209 | 2006-01-02 22:04:41 -0500 | [diff] [blame] | 1600 | const char *name = 0; |
| 1601 | const char *subname = 0; |
| 1602 | const char *subsubname = 0; |
| 1603 | |
| 1604 | name = names[0]; |
| 1605 | if (name) |
| 1606 | subname = names[1]; |
| 1607 | if (subname) |
| 1608 | subsubname = names[2]; |
| 1609 | if (subsubname && names[3]) { |
| 1610 | fprintf(stderr, |
| 1611 | "Only 3 levels are allowed with query1\n"); |
| 1612 | retval = EINVAL; |
| 1613 | } else |
| 1614 | retval = profile_get_value(profile, name, subname, |
| 1615 | subsubname, &value); |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 1616 | print_status = PRINT_VALUE; |
| 1617 | } else if (!strcmp(cmd, "list_sections")) { |
| 1618 | retval = profile_get_subsection_names(profile, names, |
| 1619 | &values); |
| 1620 | print_status = PRINT_VALUES; |
| 1621 | } else if (!strcmp(cmd, "list_relations")) { |
| 1622 | retval = profile_get_relation_names(profile, names, |
| 1623 | &values); |
| 1624 | print_status = PRINT_VALUES; |
| 1625 | } else if (!strcmp(cmd, "dump")) { |
| 1626 | retval = profile_write_tree_file |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 1627 | (profile->first_file->root, stdout); |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 1628 | #if 0 |
| 1629 | } else if (!strcmp(cmd, "clear")) { |
| 1630 | retval = profile_clear_relation(profile, names); |
| 1631 | } else if (!strcmp(cmd, "update")) { |
| 1632 | retval = profile_update_relation(profile, names+2, |
| 1633 | *names, *(names+1)); |
| 1634 | #endif |
| 1635 | } else if (!strcmp(cmd, "verify")) { |
| 1636 | retval = profile_verify_node |
Theodore Ts'o | d45544c | 2006-01-05 01:23:48 -0500 | [diff] [blame] | 1637 | (profile->first_file->root); |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 1638 | #if 0 |
| 1639 | } else if (!strcmp(cmd, "rename_section")) { |
| 1640 | retval = profile_rename_section(profile, names+1, *names); |
| 1641 | } else if (!strcmp(cmd, "add")) { |
| 1642 | value = *names; |
| 1643 | if (strcmp(value, "NULL") == 0) |
| 1644 | value = NULL; |
| 1645 | retval = profile_add_relation(profile, names+1, value); |
| 1646 | } else if (!strcmp(cmd, "flush")) { |
| 1647 | retval = profile_flush(profile); |
| 1648 | #endif |
| 1649 | } else { |
| 1650 | printf("Invalid command.\n"); |
| 1651 | } |
| 1652 | if (retval) { |
| 1653 | com_err(cmd, retval, ""); |
| 1654 | print_status = 0; |
| 1655 | } |
| 1656 | switch (print_status) { |
| 1657 | case PRINT_VALUE: |
| 1658 | printf("%s\n", value); |
| 1659 | break; |
| 1660 | case PRINT_VALUES: |
| 1661 | for (cpp = values; *cpp; cpp++) |
| 1662 | printf("%s\n", *cpp); |
| 1663 | profile_free_list(values); |
| 1664 | break; |
| 1665 | } |
| 1666 | } |
| 1667 | |
| 1668 | static void do_batchmode(profile_t profile) |
| 1669 | { |
| 1670 | int argc, ret; |
| 1671 | char **argv; |
| 1672 | char buf[256]; |
| 1673 | |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1674 | while (!feof(stdin)) { |
| 1675 | if (fgets(buf, sizeof(buf), stdin) == NULL) |
| 1676 | break; |
| 1677 | printf(">%s", buf); |
| 1678 | ret = argv_parse(buf, &argc, &argv); |
| 1679 | if (ret != 0) { |
| 1680 | printf("Argv_parse returned %d!\n", ret); |
| 1681 | continue; |
| 1682 | } |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 1683 | do_cmd(profile, argv); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1684 | printf("\n"); |
| 1685 | argv_free(argv); |
| 1686 | } |
| 1687 | profile_release(profile); |
| 1688 | exit(0); |
| 1689 | |
| 1690 | } |
| 1691 | |
Theodore Ts'o | f5f14fc | 2006-01-04 10:32:16 -0500 | [diff] [blame] | 1692 | void syntax_err_report(const char *filename, long err, int line_num) |
| 1693 | { |
| 1694 | fprintf(stderr, "Syntax error in %s, line number %d: %s\n", |
| 1695 | filename, line_num, error_message(err)); |
| 1696 | exit(1); |
| 1697 | } |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1698 | |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 1699 | int main(int argc, char **argv) |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1700 | { |
| 1701 | profile_t profile; |
| 1702 | long retval; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1703 | char *cmd; |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1704 | |
| 1705 | if (argc < 2) { |
| 1706 | fprintf(stderr, "Usage: %s filename [cmd argset]\n", program_name); |
| 1707 | exit(1); |
| 1708 | } |
| 1709 | |
| 1710 | initialize_prof_error_table(); |
Theodore Ts'o | f5f14fc | 2006-01-04 10:32:16 -0500 | [diff] [blame] | 1711 | |
| 1712 | profile_set_syntax_err_cb(syntax_err_report); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1713 | |
| 1714 | retval = profile_init_path(argv[1], &profile); |
| 1715 | if (retval) { |
| 1716 | com_err(program_name, retval, "while initializing profile"); |
| 1717 | exit(1); |
| 1718 | } |
| 1719 | cmd = *(argv+2); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1720 | if (!cmd || !strcmp(cmd, "batch")) |
| 1721 | do_batchmode(profile); |
Theodore Ts'o | 44dc5f8 | 2006-01-02 12:25:03 -0500 | [diff] [blame] | 1722 | else |
| 1723 | do_cmd(profile, argv+2); |
Theodore Ts'o | 2fa9ba9 | 2005-12-30 23:57:32 -0500 | [diff] [blame] | 1724 | profile_release(profile); |
| 1725 | |
| 1726 | return 0; |
| 1727 | } |
| 1728 | |
| 1729 | #endif |