libopkg/opkg_conf.c

   1 /* opkg_conf.c - the opkg package management system
   2
   3    Carl D. Worth
   4
   5    Copyright (C) 2001 University of Southern California
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #include "includes.h"
  19 #include "opkg_conf.h"
  20
  21 #include "xregex.h"
  22 #include "sprintf_alloc.h"
  23 #include "args.h"
  24 #include "opkg_message.h"
  25 #include "file_util.h"
  26 #include "opkg_defines.h"
  27 #include "libbb/libbb.h"
  28
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31 #include <fcntl.h>
  32 #include <errno.h>
  33 #include <glob.h>
  34
  35 static int lock_fd;
  36
  37 static opkg_conf_t _conf;
  38 opkg_conf_t *conf = &_conf;
  39
  40 /*
  41  * Config file options
  42  */
  43 opkg_option_t options[] = {
  44           { "cache", OPKG_OPT_TYPE_STRING, &_conf.cache},
  45           { "force_defaults", OPKG_OPT_TYPE_BOOL, &_conf.force_defaults },
  46           { "force_maintainer", OPKG_OPT_TYPE_BOOL, &_conf.force_maintainer },
  47           { "force_depends", OPKG_OPT_TYPE_BOOL, &_conf.force_depends },
  48           { "force_overwrite", OPKG_OPT_TYPE_BOOL, &_conf.force_overwrite },
  49           { "force_downgrade", OPKG_OPT_TYPE_BOOL, &_conf.force_downgrade },
  50           { "force_reinstall", OPKG_OPT_TYPE_BOOL, &_conf.force_reinstall },
  51           { "force_space", OPKG_OPT_TYPE_BOOL, &_conf.force_space },
  52           { "check_signature", OPKG_OPT_TYPE_BOOL, &_conf.check_signature },
  53           { "ftp_proxy", OPKG_OPT_TYPE_STRING, &_conf.ftp_proxy },
  54           { "http_proxy", OPKG_OPT_TYPE_STRING, &_conf.http_proxy },
  55           { "no_proxy", OPKG_OPT_TYPE_STRING, &_conf.no_proxy },
  56           { "test", OPKG_OPT_TYPE_BOOL, &_conf.noaction },
  57           { "noaction", OPKG_OPT_TYPE_BOOL, &_conf.noaction },
  58           { "nodeps", OPKG_OPT_TYPE_BOOL, &_conf.nodeps },
  59           { "offline_root", OPKG_OPT_TYPE_STRING, &_conf.offline_root },
  60           { "proxy_passwd", OPKG_OPT_TYPE_STRING, &_conf.proxy_passwd },
  61           { "proxy_user", OPKG_OPT_TYPE_STRING, &_conf.proxy_user },
  62           { "query-all", OPKG_OPT_TYPE_BOOL, &_conf.query_all },
  63           { "tmp_dir", OPKG_OPT_TYPE_STRING, &_conf.tmp_dir },
  64           { "verbosity", OPKG_OPT_TYPE_INT, &_conf.verbosity },
  65 #if defined(HAVE_OPENSSL)
  66           { "signature_ca_file", OPKG_OPT_TYPE_STRING, &_conf.signature_ca_file },
  67           { "signature_ca_path", OPKG_OPT_TYPE_STRING, &_conf.signature_ca_path },
  68 #endif
  69 #if defined(HAVE_PATHFINDER)
  70           { "check_x509_path", OPKG_OPT_TYPE_BOOL, &_conf.check_x509_path },
  71 #endif
  72 #if defined(HAVE_SSLCURL) && defined(HAVE_CURL)
  73           { "ssl_engine", OPKG_OPT_TYPE_STRING, &_conf.ssl_engine },
  74           { "ssl_cert", OPKG_OPT_TYPE_STRING, &_conf.ssl_cert },
  75           { "ssl_cert_type", OPKG_OPT_TYPE_STRING, &_conf.ssl_cert_type },
  76           { "ssl_key", OPKG_OPT_TYPE_STRING, &_conf.ssl_key },
  77           { "ssl_key_type", OPKG_OPT_TYPE_STRING, &_conf.ssl_key_type },
  78           { "ssl_key_passwd", OPKG_OPT_TYPE_STRING, &_conf.ssl_key_passwd },
  79           { "ssl_ca_file", OPKG_OPT_TYPE_STRING, &_conf.ssl_ca_file },
  80           { "ssl_ca_path", OPKG_OPT_TYPE_STRING, &_conf.ssl_ca_path },
  81           { "ssl_dont_verify_peer", OPKG_OPT_TYPE_BOOL, &_conf.ssl_dont_verify_peer },
  82 #endif
  83           { NULL, 0, NULL }
  84 };
  85
  86 static int
  87 resolve_pkg_dest_list(nv_pair_list_t *nv_pair_list, const char *default_dest_name)
  88 {
  89      nv_pair_list_elt_t *iter;
  90      nv_pair_t *nv_pair;
  91      pkg_dest_t *dest;
  92      char *root_dir;
  93
  94      for (iter = nv_pair_list_first(nv_pair_list); iter; iter = nv_pair_list_next(nv_pair_list, iter)) {
  95           nv_pair = (nv_pair_t *)iter->data;
  96
  97           if (conf->offline_root) {
  98                sprintf_alloc(&root_dir, "%s%s", conf->offline_root, nv_pair->value);
  99           } else {
 100                root_dir = xstrdup(nv_pair->value);
 101           }
 102
 103           dest = pkg_dest_list_append(&conf->pkg_dest_list, nv_pair->name, root_dir, conf->lists_dir);
 104           free(root_dir);
 105
 106           if (conf->default_dest == NULL)
 107                conf->default_dest = dest;
 108
 109           if (default_dest_name && !strcmp(dest->name, default_dest_name)) {
 110                conf->default_dest = dest;
 111                conf->restrict_to_default_dest = 1;
 112           }
 113      }
 114
 115      if (default_dest_name && !conf->restrict_to_default_dest) {
 116           opkg_msg(ERROR, "Unknown dest name: `%s'.\n", default_dest_name);
 117           return -1;
 118      }
 119
 120      return 0;
 121 }
 122
 123 static int
 124 opkg_conf_set_option(const char *name, const char *value)
 125 {
 126      int i = 0;
 127      while (options[i].name) {
 128           if (strcmp(options[i].name, name) == 0) {
 129                switch (options[i].type) {
 130                case OPKG_OPT_TYPE_BOOL:
 131                     if (*(int *)options[i].value) {
 132                             opkg_msg(ERROR, "Duplicate boolean option %s, "
 133                                 "leaving this option on.\n", name);
 134                             return 0;
 135                     }
 136                     *((int * const)options[i].value) = 1;
 137                     return 0;
 138                case OPKG_OPT_TYPE_INT:
 139                     if (value) {
 140                             if (*(int *)options[i].value) {
 141                                     opkg_msg(ERROR, "Duplicate option %s, "
 142                                         "using first seen value \"%d\".\n",
 143                                         name, *((int *)options[i].value));
 144                                     return 0;
 145                             }
 146                          *((int * const)options[i].value) = atoi(value);
 147                          return 0;
 148                     } else {
 149                          opkg_msg(ERROR, "Option %s needs an argument\n",
 150                                 name);
 151                          return -1;
 152                     }
 153                case OPKG_OPT_TYPE_STRING:
 154                     if (value) {
 155                             if (*(char **)options[i].value) {
 156                                     opkg_msg(ERROR, "Duplicate option %s, "
 157                                         "using first seen value \"%s\".\n",
 158                                         name, *((char **)options[i].value));
 159                                     return 0;
 160                             }
 161                          *((char ** const)options[i].value) = xstrdup(value);
 162                          return 0;
 163                     } else {
 164                          opkg_msg(ERROR, "Option %s needs an argument\n",
 165                                 name);
 166                          return -1;
 167                     }
 168                }
 169           }
 170           i++;
 171      }
 172
 173      opkg_msg(ERROR, "Unrecognized option: %s=%s\n", name, value);
 174      return -1;
 175 }
 176
 177 static int
 178 opkg_conf_parse_file(const char *filename,
 179                                 pkg_src_list_t *pkg_src_list,
 180                                 nv_pair_list_t *tmp_dest_nv_pair_list)
 181 {
 182      int err;
 183      FILE *file;
 184      regex_t valid_line_re, comment_re;
 185 #define regmatch_size 12
 186      regmatch_t regmatch[regmatch_size];
 187
 188      file = fopen(filename, "r");
 189      if (file == NULL) {
 190           opkg_perror(ERROR, "Failed to open %s", filename);
 191           return -1;
 192      }
 193
 194      opkg_msg(INFO, "Loading conf file %s.\n", filename);
 195
 196      err = xregcomp(&comment_re,
 197                     "^[[:space:]]*(#.*|[[:space:]]*)$",
 198                     REG_EXTENDED);
 199      if (err) {
 200           return -1;
 201      }
 202      err = xregcomp(&valid_line_re, "^[[:space:]]*(\"([^\"]*)\"|([^[:space:]]*))[[:space:]]*(\"([^\"]*)\"|([^[:space:]]*))[[:space:]]*(\"([^\"]*)\"|([^[:space:]]*))([[:space:]]+([^[:space:]]+))?[[:space:]]*$", REG_EXTENDED);
 203      if (err) {
 204           return -1;
 205      }
 206
 207      while(1) {
 208           int line_num = 0;
 209           char *line;
 210           char *type, *name, *value, *extra;
 211
 212           line = file_read_line_alloc(file);
 213           line_num++;
 214           if (line == NULL) {
 215                break;
 216           }
 217
 218           if (regexec(&comment_re, line, 0, 0, 0) == 0) {
 219                goto NEXT_LINE;
 220           }
 221
 222           if (regexec(&valid_line_re, line, regmatch_size, regmatch, 0) == REG_NOMATCH) {
 223                opkg_msg(ERROR, "%s:%d: Ignoring invalid line: `%s'\n",
 224                        filename, line_num, line);
 225                goto NEXT_LINE;
 226           }
 227
 228           /* This has to be so ugly to deal with optional quotation marks */
 229           if (regmatch[2].rm_so > 0) {
 230                type = xstrndup(line + regmatch[2].rm_so,
 231                               regmatch[2].rm_eo - regmatch[2].rm_so);
 232           } else {
 233                type = xstrndup(line + regmatch[3].rm_so,
 234                               regmatch[3].rm_eo - regmatch[3].rm_so);
 235           }
 236           if (regmatch[5].rm_so > 0) {
 237                name = xstrndup(line + regmatch[5].rm_so,
 238                               regmatch[5].rm_eo - regmatch[5].rm_so);
 239           } else {
 240                name = xstrndup(line + regmatch[6].rm_so,
 241                               regmatch[6].rm_eo - regmatch[6].rm_so);
 242           }
 243           if (regmatch[8].rm_so > 0) {
 244                value = xstrndup(line + regmatch[8].rm_so,
 245                                regmatch[8].rm_eo - regmatch[8].rm_so);
 246           } else {
 247                value = xstrndup(line + regmatch[9].rm_so,
 248                                regmatch[9].rm_eo - regmatch[9].rm_so);
 249           }
 250           extra = NULL;
 251           if (regmatch[11].rm_so > 0) {
 252                extra = xstrndup (line + regmatch[11].rm_so,
 253                                 regmatch[11].rm_eo - regmatch[11].rm_so);
 254           }
 255
 256           /* We use the tmp_dest_nv_pair_list below instead of
 257              conf->pkg_dest_list because we might encounter an
 258              offline_root option later and that would invalidate the
 259              directories we would have computed in
 260              pkg_dest_list_init. (We do a similar thing with
 261              tmp_src_nv_pair_list for sake of symmetry.) */
 262           if (strcmp(type, "option") == 0) {
 263                opkg_conf_set_option(name, value);
 264           } else if (strcmp(type, "src") == 0) {
 265                if (!nv_pair_list_find((nv_pair_list_t*) pkg_src_list, name)) {
 266                     pkg_src_list_append (pkg_src_list, name, value, extra, 0);
 267                } else {
 268                     opkg_msg(ERROR, "Duplicate src declaration (%s %s). "
 269                                     "Skipping.\n", name, value);
 270                }
 271           } else if (strcmp(type, "src/gz") == 0) {
 272                if (!nv_pair_list_find((nv_pair_list_t*) pkg_src_list, name)) {
 273                     pkg_src_list_append (pkg_src_list, name, value, extra, 1);
 274                } else {
 275                     opkg_msg(ERROR, "Duplicate src declaration (%s %s). "
 276                                    "Skipping.\n", name, value);
 277                }
 278           } else if (strcmp(type, "dest") == 0) {
 279                nv_pair_list_append(tmp_dest_nv_pair_list, name, value);
 280           } else if (strcmp(type, "lists_dir") == 0) {
 281                conf->lists_dir = xstrdup(value);
 282           } else if (strcmp(type, "arch") == 0) {
 283                opkg_msg(INFO, "Supported arch %s priority (%s)\n", name, value);
 284                if (!value) {
 285                     opkg_msg(NOTICE, "No priority given for architecture %s,"
 286                                    "defaulting to 10\n", name);
 287                     value = xstrdup("10");
 288                }
 289                nv_pair_list_append(&conf->arch_list, name, value);
 290           } else {
 291                opkg_msg(ERROR, "Ignoring unknown configuration "
 292                        "parameter: %s %s %s\n", type, name, value);
 293                return -1;
 294           }
 295
 296           free(type);
 297           free(name);
 298           free(value);
 299           if (extra)
 300                free (extra);
 301
 302      NEXT_LINE:
 303           free(line);
 304      }
 305
 306      regfree(&comment_re);
 307      regfree(&valid_line_re);
 308      fclose(file);
 309
 310      return 0;
 311 }
 312
 313 int
 314 opkg_conf_write_status_files(void)
 315 {
 316      pkg_dest_list_elt_t *iter;
 317      pkg_dest_t *dest;
 318      pkg_vec_t *all;
 319      pkg_t *pkg;
 320      int i, ret = 0;
 321
 322      if (conf->noaction)
 323           return 0;
 324
 325      list_for_each_entry(iter, &conf->pkg_dest_list.head, node) {
 326           dest = (pkg_dest_t *)iter->data;
 327
 328           dest->status_fp = fopen(dest->status_file_name, "w");
 329           if (dest->status_fp == NULL) {
 330                opkg_perror(ERROR, "Can't open status file %s",
 331                     dest->status_file_name);
 332                ret = -1;
 333           }
 334      }
 335
 336      all = pkg_vec_alloc();
 337      pkg_hash_fetch_available(all);
 338
 339      for(i = 0; i < all->len; i++) {
 340           pkg = all->pkgs[i];
 341           /* We don't need most uninstalled packages in the status file */
 342           if (pkg->state_status == SS_NOT_INSTALLED
 343               && (pkg->state_want == SW_UNKNOWN
 344                   || pkg->state_want == SW_DEINSTALL
 345                   || pkg->state_want == SW_PURGE)) {
 346                continue;
 347           }
 348           if (pkg->dest == NULL) {
 349                opkg_msg(ERROR, "Internal error: package %s has a NULL dest\n",
 350                        pkg->name);
 351                continue;
 352           }
 353           if (pkg->dest->status_fp)
 354                pkg_print_status(pkg, pkg->dest->status_fp);
 355      }
 356
 357      pkg_vec_free(all);
 358
 359      list_for_each_entry(iter, &conf->pkg_dest_list.head, node) {
 360           dest = (pkg_dest_t *)iter->data;
 361           fclose(dest->status_fp);
 362      }
 363
 364      return ret;
 365 }
 366
 367
 368 char *
 369 root_filename_alloc(char *filename)
 370 {
 371         char *root_filename;
 372         sprintf_alloc(&root_filename, "%s%s",
 373                 (conf->offline_root ? conf->offline_root : ""), filename);
 374         return root_filename;
 375 }
 376
 377 int
 378 opkg_conf_init(const args_t *args)
 379 {
 380      int err;
 381      char *tmp_dir_base, *tmp2;
 382      nv_pair_list_t tmp_dest_nv_pair_list;
 383      char *lock_file = NULL;
 384      glob_t globbuf;
 385      char *etc_opkg_conf_pattern;
 386
 387      conf->restrict_to_default_dest = 0;
 388      conf->default_dest = NULL;
 389 #if defined(HAVE_PATHFINDER)
 390      conf->check_x509_path = 1;
 391 #endif
 392
 393      pkg_src_list_init(&conf->pkg_src_list);
 394
 395      nv_pair_list_init(&tmp_dest_nv_pair_list);
 396      pkg_dest_list_init(&conf->pkg_dest_list);
 397
 398      nv_pair_list_init(&conf->arch_list);
 399
 400      if (!conf->offline_root)
 401           conf->offline_root = xstrdup(getenv("OFFLINE_ROOT"));
 402
 403      if (args->conf_file) {
 404           struct stat stat_buf;
 405           err = stat(args->conf_file, &stat_buf);
 406           if (err == 0)
 407                if (opkg_conf_parse_file(args->conf_file,
 408                                     &conf->pkg_src_list, &tmp_dest_nv_pair_list)<0) {
 409                    /* Memory leakage from opkg_conf_parse-file */
 410                    return -1;
 411                }
 412      }
 413
 414      if (conf->offline_root)
 415           sprintf_alloc(&etc_opkg_conf_pattern, "%s/etc/opkg/*.conf", conf->offline_root);
 416      else {
 417           const char *conf_file_dir = getenv("OPKG_CONF_DIR");
 418           if (conf_file_dir == NULL)
 419                   conf_file_dir = ARGS_DEFAULT_CONF_FILE_DIR;
 420           sprintf_alloc(&etc_opkg_conf_pattern, "%s/*.conf", conf_file_dir);
 421      }
 422      memset(&globbuf, 0, sizeof(globbuf));
 423      err = glob(etc_opkg_conf_pattern, 0, NULL, &globbuf);
 424      free (etc_opkg_conf_pattern);
 425      if (!err) {
 426           int i;
 427           for (i = 0; i < globbuf.gl_pathc; i++) {
 428                if (globbuf.gl_pathv[i])
 429                     if (args->conf_file &&
 430                                 !strcmp(args->conf_file, globbuf.gl_pathv[i]))
 431                             continue;
 432                     if ( opkg_conf_parse_file(globbuf.gl_pathv[i],
 433                                          &conf->pkg_src_list, &tmp_dest_nv_pair_list)<0) {
 434                         /* Memory leakage from opkg_conf_parse-file */
 435                         return -1;
 436                     }
 437           }
 438      }
 439      globfree(&globbuf);
 440
 441      /* check for lock file */
 442      if (conf->offline_root)
 443        sprintf_alloc (&lock_file, "%s/%s/lock", conf->offline_root, OPKG_STATE_DIR_PREFIX);
 444      else
 445        sprintf_alloc (&lock_file, "%s/lock", OPKG_STATE_DIR_PREFIX);
 446
 447      lock_fd = creat(lock_file, S_IRUSR | S_IWUSR | S_IRGRP);
 448      if (lock_fd == -1) {
 449              opkg_perror(ERROR, "Could not create lock file %s", lock_file);
 450              free(lock_file);
 451              return -1;
 452      }
 453
 454      if (lockf(lock_fd, F_TLOCK, (off_t)0) == -1) {
 455           opkg_perror(ERROR, "Could not lock %s", lock_file);
 456           free(lock_file);
 457           return -1;
 458      }
 459
 460      free(lock_file);
 461
 462      if (conf->tmp_dir)
 463           tmp_dir_base = conf->tmp_dir;
 464      else
 465           tmp_dir_base = getenv("TMPDIR");
 466      sprintf_alloc(&tmp2, "%s/%s",
 467                    tmp_dir_base ? tmp_dir_base : OPKG_CONF_DEFAULT_TMP_DIR_BASE,
 468                    OPKG_CONF_TMP_DIR_SUFFIX);
 469      if (conf->tmp_dir)
 470              free(conf->tmp_dir);
 471      conf->tmp_dir = mkdtemp(tmp2);
 472      if (conf->tmp_dir == NULL) {
 473           opkg_perror(ERROR, "Creating temp dir %s failed", tmp2);
 474           return -1;
 475      }
 476
 477      pkg_hash_init();
 478      hash_table_init("file-hash", &conf->file_hash, OPKG_CONF_DEFAULT_HASH_LEN);
 479      hash_table_init("obs-file-hash", &conf->obs_file_hash, OPKG_CONF_DEFAULT_HASH_LEN/16);
 480
 481      if (conf->lists_dir == NULL)
 482         conf->lists_dir = xstrdup(OPKG_CONF_LISTS_DIR);
 483
 484      if (conf->offline_root) {
 485             char *tmp;
 486             sprintf_alloc(&tmp, "%s/%s", conf->offline_root, conf->lists_dir);
 487             free(conf->lists_dir);
 488             conf->lists_dir = tmp;
 489      }
 490
 491      /* if no architectures were defined, then default all, noarch, and host architecture */
 492      if (nv_pair_list_empty(&conf->arch_list)) {
 493           nv_pair_list_append(&conf->arch_list, "all", "1");
 494           nv_pair_list_append(&conf->arch_list, "noarch", "1");
 495           nv_pair_list_append(&conf->arch_list, HOST_CPU_STR, "10");
 496      }
 497
 498      /* Even if there is no conf file, we'll need at least one dest. */
 499      if (nv_pair_list_empty(&tmp_dest_nv_pair_list)) {
 500           nv_pair_list_append(&tmp_dest_nv_pair_list,
 501                               OPKG_CONF_DEFAULT_DEST_NAME,
 502                               OPKG_CONF_DEFAULT_DEST_ROOT_DIR);
 503      }
 504
 505      err = resolve_pkg_dest_list(&tmp_dest_nv_pair_list, args->dest);
 506      nv_pair_list_deinit(&tmp_dest_nv_pair_list);
 507
 508      if (err)
 509         return -1;
 510
 511      return 0;
 512 }
 513
 514 void
 515 opkg_conf_deinit(void)
 516 {
 517         int i;
 518         char **tmp;
 519
 520         rm_r(conf->tmp_dir);
 521
 522         free(conf->lists_dir);
 523
 524         pkg_src_list_deinit(&conf->pkg_src_list);
 525         pkg_dest_list_deinit(&conf->pkg_dest_list);
 526         nv_pair_list_deinit(&conf->arch_list);
 527
 528         for (i=0; options[i].name; i++) {
 529                 if (options[i].type == OPKG_OPT_TYPE_STRING) {
 530                         tmp = (char **)options[i].value;
 531                         if (*tmp) {
 532                                 free(*tmp);
 533                                 *tmp = NULL;
 534                         }
 535                 }
 536         }
 537
 538         if (conf->verbosity >= DEBUG) {
 539                 hash_print_stats(&conf->pkg_hash);
 540                 hash_print_stats(&conf->file_hash);
 541                 hash_print_stats(&conf->obs_file_hash);
 542         }
 543
 544         pkg_hash_deinit();
 545         hash_table_deinit(&conf->file_hash);
 546         hash_table_deinit(&conf->obs_file_hash);
 547
 548         /* lockf may be defined with warn_unused_result */
 549         if (lockf(lock_fd, F_ULOCK, (off_t)0) != 0) {
 550                 opkg_perror(ERROR, "unlock failed");
 551         }
 552
 553         close(lock_fd);
 554 }