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)
  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;
  95                      iter = nv_pair_list_next(nv_pair_list, iter)) {
  96           nv_pair = (nv_pair_t *)iter->data;
  97
  98           if (conf->offline_root) {
  99                sprintf_alloc(&root_dir, "%s%s", conf->offline_root, nv_pair->value);
 100           } else {
 101                root_dir = xstrdup(nv_pair->value);
 102           }
 103
 104           dest = pkg_dest_list_append(&conf->pkg_dest_list, nv_pair->name, root_dir, conf->lists_dir);
 105           free(root_dir);
 106
 107           if (conf->default_dest == NULL)
 108                conf->default_dest = dest;
 109
 110           if (conf->dest_str && !strcmp(dest->name, conf->dest_str)) {
 111                conf->default_dest = dest;
 112                conf->restrict_to_default_dest = 1;
 113           }
 114      }
 115
 116      if (conf->dest_str && !conf->restrict_to_default_dest) {
 117           opkg_msg(ERROR, "Unknown dest name: `%s'.\n", conf->dest_str);
 118           return -1;
 119      }
 120
 121      return 0;
 122 }
 123
 124 static int
 125 opkg_conf_set_option(const char *name, const char *value)
 126 {
 127      int i = 0;
 128      while (options[i].name) {
 129           if (strcmp(options[i].name, name) == 0) {
 130                switch (options[i].type) {
 131                case OPKG_OPT_TYPE_BOOL:
 132                     if (*(int *)options[i].value) {
 133                             opkg_msg(ERROR, "Duplicate boolean option %s, "
 134                                 "leaving this option on.\n", name);
 135                             return 0;
 136                     }
 137                     *((int * const)options[i].value) = 1;
 138                     return 0;
 139                case OPKG_OPT_TYPE_INT:
 140                     if (value) {
 141                             if (*(int *)options[i].value) {
 142                                     opkg_msg(ERROR, "Duplicate option %s, "
 143                                         "using first seen value \"%d\".\n",
 144                                         name, *((int *)options[i].value));
 145                                     return 0;
 146                             }
 147                          *((int * const)options[i].value) = atoi(value);
 148                          return 0;
 149                     } else {
 150                          opkg_msg(ERROR, "Option %s needs an argument\n",
 151                                 name);
 152                          return -1;
 153                     }
 154                case OPKG_OPT_TYPE_STRING:
 155                     if (value) {
 156                             if (*(char **)options[i].value) {
 157                                     opkg_msg(ERROR, "Duplicate option %s, "
 158                                         "using first seen value \"%s\".\n",
 159                                         name, *((char **)options[i].value));
 160                                     return 0;
 161                             }
 162                          *((char ** const)options[i].value) = xstrdup(value);
 163                          return 0;
 164                     } else {
 165                          opkg_msg(ERROR, "Option %s needs an argument\n",
 166                                 name);
 167                          return -1;
 168                     }
 169                }
 170           }
 171           i++;
 172      }
 173
 174      opkg_msg(ERROR, "Unrecognized option: %s=%s\n", name, value);
 175      return -1;
 176 }
 177
 178 static int
 179 opkg_conf_parse_file(const char *filename,
 180                                 pkg_src_list_t *pkg_src_list,
 181                                 nv_pair_list_t *tmp_dest_nv_pair_list)
 182 {
 183      int err;
 184      FILE *file;
 185      regex_t valid_line_re, comment_re;
 186 #define regmatch_size 12
 187      regmatch_t regmatch[regmatch_size];
 188
 189      file = fopen(filename, "r");
 190      if (file == NULL) {
 191           opkg_perror(ERROR, "Failed to open %s", filename);
 192           return -1;
 193      }
 194
 195      opkg_msg(INFO, "Loading conf file %s.\n", filename);
 196
 197      err = xregcomp(&comment_re,
 198                     "^[[:space:]]*(#.*|[[:space:]]*)$",
 199                     REG_EXTENDED);
 200      if (err) {
 201           return -1;
 202      }
 203      err = xregcomp(&valid_line_re, "^[[:space:]]*(\"([^\"]*)\"|([^[:space:]]*))[[:space:]]*(\"([^\"]*)\"|([^[:space:]]*))[[:space:]]*(\"([^\"]*)\"|([^[:space:]]*))([[:space:]]+([^[:space:]]+))?[[:space:]]*$", REG_EXTENDED);
 204      if (err) {
 205           return -1;
 206      }
 207
 208      while(1) {
 209           int line_num = 0;
 210           char *line;
 211           char *type, *name, *value, *extra;
 212
 213           line = file_read_line_alloc(file);
 214           line_num++;
 215           if (line == NULL) {
 216                break;
 217           }
 218
 219           if (regexec(&comment_re, line, 0, 0, 0) == 0) {
 220                goto NEXT_LINE;
 221           }
 222
 223           if (regexec(&valid_line_re, line, regmatch_size, regmatch, 0) == REG_NOMATCH) {
 224                opkg_msg(ERROR, "%s:%d: Ignoring invalid line: `%s'\n",
 225                        filename, line_num, line);
 226                goto NEXT_LINE;
 227           }
 228
 229           /* This has to be so ugly to deal with optional quotation marks */
 230           if (regmatch[2].rm_so > 0) {
 231                type = xstrndup(line + regmatch[2].rm_so,
 232                               regmatch[2].rm_eo - regmatch[2].rm_so);
 233           } else {
 234                type = xstrndup(line + regmatch[3].rm_so,
 235                               regmatch[3].rm_eo - regmatch[3].rm_so);
 236           }
 237           if (regmatch[5].rm_so > 0) {
 238                name = xstrndup(line + regmatch[5].rm_so,
 239                               regmatch[5].rm_eo - regmatch[5].rm_so);
 240           } else {
 241                name = xstrndup(line + regmatch[6].rm_so,
 242                               regmatch[6].rm_eo - regmatch[6].rm_so);
 243           }
 244           if (regmatch[8].rm_so > 0) {
 245                value = xstrndup(line + regmatch[8].rm_so,
 246                                regmatch[8].rm_eo - regmatch[8].rm_so);
 247           } else {
 248                value = xstrndup(line + regmatch[9].rm_so,
 249                                regmatch[9].rm_eo - regmatch[9].rm_so);
 250           }
 251           extra = NULL;
 252           if (regmatch[11].rm_so > 0) {
 253                extra = xstrndup (line + regmatch[11].rm_so,
 254                                 regmatch[11].rm_eo - regmatch[11].rm_so);
 255           }
 256
 257           /* We use the tmp_dest_nv_pair_list below instead of
 258              conf->pkg_dest_list because we might encounter an
 259              offline_root option later and that would invalidate the
 260              directories we would have computed in
 261              pkg_dest_list_init. (We do a similar thing with
 262              tmp_src_nv_pair_list for sake of symmetry.) */
 263           if (strcmp(type, "option") == 0) {
 264                opkg_conf_set_option(name, value);
 265           } else if (strcmp(type, "src") == 0) {
 266                if (!nv_pair_list_find((nv_pair_list_t*) pkg_src_list, name)) {
 267                     pkg_src_list_append (pkg_src_list, name, value, extra, 0);
 268                } else {
 269                     opkg_msg(ERROR, "Duplicate src declaration (%s %s). "
 270                                     "Skipping.\n", name, value);
 271                }
 272           } else if (strcmp(type, "src/gz") == 0) {
 273                if (!nv_pair_list_find((nv_pair_list_t*) pkg_src_list, name)) {
 274                     pkg_src_list_append (pkg_src_list, name, value, extra, 1);
 275                } else {
 276                     opkg_msg(ERROR, "Duplicate src declaration (%s %s). "
 277                                    "Skipping.\n", name, value);
 278                }
 279           } else if (strcmp(type, "dest") == 0) {
 280                nv_pair_list_append(tmp_dest_nv_pair_list, name, value);
 281           } else if (strcmp(type, "lists_dir") == 0) {
 282                conf->lists_dir = xstrdup(value);
 283           } else if (strcmp(type, "arch") == 0) {
 284                opkg_msg(INFO, "Supported arch %s priority (%s)\n", name, value);
 285                if (!value) {
 286                     opkg_msg(NOTICE, "No priority given for architecture %s,"
 287                                    "defaulting to 10\n", name);
 288                     value = xstrdup("10");
 289                }
 290                nv_pair_list_append(&conf->arch_list, name, value);
 291           } else {
 292                opkg_msg(ERROR, "Ignoring unknown configuration "
 293                        "parameter: %s %s %s\n", type, name, value);
 294                return -1;
 295           }
 296
 297           free(type);
 298           free(name);
 299           free(value);
 300           if (extra)
 301                free (extra);
 302
 303      NEXT_LINE:
 304           free(line);
 305      }
 306
 307      regfree(&comment_re);
 308      regfree(&valid_line_re);
 309      fclose(file);
 310
 311      return 0;
 312 }
 313
 314 int
 315 opkg_conf_write_status_files(void)
 316 {
 317      pkg_dest_list_elt_t *iter;
 318      pkg_dest_t *dest;
 319      pkg_vec_t *all;
 320      pkg_t *pkg;
 321      int i, ret = 0;
 322
 323      if (conf->noaction)
 324           return 0;
 325
 326      list_for_each_entry(iter, &conf->pkg_dest_list.head, node) {
 327           dest = (pkg_dest_t *)iter->data;
 328
 329           dest->status_fp = fopen(dest->status_file_name, "w");
 330           if (dest->status_fp == NULL) {
 331                opkg_perror(ERROR, "Can't open status file %s",
 332                     dest->status_file_name);
 333                ret = -1;
 334           }
 335      }
 336
 337      all = pkg_vec_alloc();
 338      pkg_hash_fetch_available(all);
 339
 340      for(i = 0; i < all->len; i++) {
 341           pkg = all->pkgs[i];
 342           /* We don't need most uninstalled packages in the status file */
 343           if (pkg->state_status == SS_NOT_INSTALLED
 344               && (pkg->state_want == SW_UNKNOWN
 345                   || pkg->state_want == SW_DEINSTALL
 346                   || pkg->state_want == SW_PURGE)) {
 347                continue;
 348           }
 349           if (pkg->dest == NULL) {
 350                opkg_msg(ERROR, "Internal error: package %s has a NULL dest\n",
 351                        pkg->name);
 352                continue;
 353           }
 354           if (pkg->dest->status_fp)
 355                pkg_print_status(pkg, pkg->dest->status_fp);
 356      }
 357
 358      pkg_vec_free(all);
 359
 360      list_for_each_entry(iter, &conf->pkg_dest_list.head, node) {
 361           dest = (pkg_dest_t *)iter->data;
 362           fclose(dest->status_fp);
 363      }
 364
 365      return ret;
 366 }
 367
 368
 369 char *
 370 root_filename_alloc(char *filename)
 371 {
 372         char *root_filename;
 373         sprintf_alloc(&root_filename, "%s%s",
 374                 (conf->offline_root ? conf->offline_root : ""), filename);
 375         return root_filename;
 376 }
 377
 378 int
 379 opkg_conf_init(void)
 380 {
 381      int err;
 382      char *tmp_dir_base, *tmp2;
 383      nv_pair_list_t tmp_dest_nv_pair_list;
 384      char *lock_file = NULL;
 385      glob_t globbuf;
 386      char *etc_opkg_conf_pattern;
 387
 388      conf->restrict_to_default_dest = 0;
 389      conf->default_dest = NULL;
 390 #if defined(HAVE_PATHFINDER)
 391      conf->check_x509_path = 1;
 392 #endif
 393
 394      pkg_src_list_init(&conf->pkg_src_list);
 395
 396      nv_pair_list_init(&tmp_dest_nv_pair_list);
 397      pkg_dest_list_init(&conf->pkg_dest_list);
 398
 399      nv_pair_list_init(&conf->arch_list);
 400
 401      if (!conf->offline_root)
 402           conf->offline_root = xstrdup(getenv("OFFLINE_ROOT"));
 403
 404      if (conf->conf_file) {
 405           struct stat stat_buf;
 406           err = stat(conf->conf_file, &stat_buf);
 407           if (err == 0)
 408                if (opkg_conf_parse_file(conf->conf_file,
 409                                     &conf->pkg_src_list, &tmp_dest_nv_pair_list)<0) {
 410                    /* Memory leakage from opkg_conf_parse-file */
 411                    return -1;
 412                }
 413      }
 414
 415      if (conf->offline_root)
 416           sprintf_alloc(&etc_opkg_conf_pattern, "%s/etc/opkg/*.conf", conf->offline_root);
 417      else {
 418           const char *conf_file_dir = getenv("OPKG_CONF_DIR");
 419           if (conf_file_dir == NULL)
 420                   conf_file_dir = OPKG_CONF_DEFAULT_CONF_FILE_DIR;
 421           sprintf_alloc(&etc_opkg_conf_pattern, "%s/*.conf", conf_file_dir);
 422      }
 423      memset(&globbuf, 0, sizeof(globbuf));
 424      err = glob(etc_opkg_conf_pattern, 0, NULL, &globbuf);
 425      free (etc_opkg_conf_pattern);
 426      if (!err) {
 427           int i;
 428           for (i = 0; i < globbuf.gl_pathc; i++) {
 429                if (globbuf.gl_pathv[i])
 430                     if (conf->conf_file &&
 431                                 !strcmp(conf->conf_file, globbuf.gl_pathv[i]))
 432                             continue;
 433                     if ( opkg_conf_parse_file(globbuf.gl_pathv[i],
 434                                          &conf->pkg_src_list, &tmp_dest_nv_pair_list)<0) {
 435                         /* Memory leakage from opkg_conf_parse-file */
 436                         return -1;
 437                     }
 438           }
 439      }
 440      globfree(&globbuf);
 441
 442      /* check for lock file */
 443      if (conf->offline_root)
 444        sprintf_alloc (&lock_file, "%s/%s/lock", conf->offline_root, OPKG_STATE_DIR_PREFIX);
 445      else
 446        sprintf_alloc (&lock_file, "%s/lock", OPKG_STATE_DIR_PREFIX);
 447
 448      lock_fd = creat(lock_file, S_IRUSR | S_IWUSR | S_IRGRP);
 449      if (lock_fd == -1) {
 450              opkg_perror(ERROR, "Could not create lock file %s", lock_file);
 451              free(lock_file);
 452              return -1;
 453      }
 454
 455      if (lockf(lock_fd, F_TLOCK, (off_t)0) == -1) {
 456           opkg_perror(ERROR, "Could not lock %s", lock_file);
 457           free(lock_file);
 458           return -1;
 459      }
 460
 461      free(lock_file);
 462
 463      if (conf->tmp_dir)
 464           tmp_dir_base = conf->tmp_dir;
 465      else
 466           tmp_dir_base = getenv("TMPDIR");
 467      sprintf_alloc(&tmp2, "%s/%s",
 468                    tmp_dir_base ? tmp_dir_base : OPKG_CONF_DEFAULT_TMP_DIR_BASE,
 469                    OPKG_CONF_TMP_DIR_SUFFIX);
 470      if (conf->tmp_dir)
 471              free(conf->tmp_dir);
 472      conf->tmp_dir = mkdtemp(tmp2);
 473      if (conf->tmp_dir == NULL) {
 474           opkg_perror(ERROR, "Creating temp dir %s failed", tmp2);
 475           return -1;
 476      }
 477
 478      pkg_hash_init();
 479      hash_table_init("file-hash", &conf->file_hash, OPKG_CONF_DEFAULT_HASH_LEN);
 480      hash_table_init("obs-file-hash", &conf->obs_file_hash, OPKG_CONF_DEFAULT_HASH_LEN/16);
 481
 482      if (conf->lists_dir == NULL)
 483         conf->lists_dir = xstrdup(OPKG_CONF_LISTS_DIR);
 484
 485      if (conf->offline_root) {
 486             char *tmp;
 487             sprintf_alloc(&tmp, "%s/%s", conf->offline_root, conf->lists_dir);
 488             free(conf->lists_dir);
 489             conf->lists_dir = tmp;
 490      }
 491
 492      /* if no architectures were defined, then default all, noarch, and host architecture */
 493      if (nv_pair_list_empty(&conf->arch_list)) {
 494           nv_pair_list_append(&conf->arch_list, "all", "1");
 495           nv_pair_list_append(&conf->arch_list, "noarch", "1");
 496           nv_pair_list_append(&conf->arch_list, HOST_CPU_STR, "10");
 497      }
 498
 499      /* Even if there is no conf file, we'll need at least one dest. */
 500      if (nv_pair_list_empty(&tmp_dest_nv_pair_list)) {
 501           nv_pair_list_append(&tmp_dest_nv_pair_list,
 502                               OPKG_CONF_DEFAULT_DEST_NAME,
 503                               OPKG_CONF_DEFAULT_DEST_ROOT_DIR);
 504      }
 505
 506      err = resolve_pkg_dest_list(&tmp_dest_nv_pair_list);
 507      nv_pair_list_deinit(&tmp_dest_nv_pair_list);
 508
 509      if (err)
 510         return -1;
 511
 512      return 0;
 513 }
 514
 515 void
 516 opkg_conf_deinit(void)
 517 {
 518         int i;
 519         char **tmp;
 520
 521         rm_r(conf->tmp_dir);
 522
 523         free(conf->lists_dir);
 524
 525         if (conf->dest_str)
 526                 free(conf->dest_str);
 527
 528         if (conf->conf_file)
 529                 free(conf->conf_file);
 530
 531         pkg_src_list_deinit(&conf->pkg_src_list);
 532         pkg_dest_list_deinit(&conf->pkg_dest_list);
 533         nv_pair_list_deinit(&conf->arch_list);
 534
 535         for (i=0; options[i].name; i++) {
 536                 if (options[i].type == OPKG_OPT_TYPE_STRING) {
 537                         tmp = (char **)options[i].value;
 538                         if (*tmp) {
 539                                 free(*tmp);
 540                                 *tmp = NULL;
 541                         }
 542                 }
 543         }
 544
 545         if (conf->verbosity >= DEBUG) {
 546                 hash_print_stats(&conf->pkg_hash);
 547                 hash_print_stats(&conf->file_hash);
 548                 hash_print_stats(&conf->obs_file_hash);
 549         }
 550
 551         pkg_hash_deinit();
 552         hash_table_deinit(&conf->file_hash);
 553         hash_table_deinit(&conf->obs_file_hash);
 554
 555         /* lockf may be defined with warn_unused_result */
 556         if (lockf(lock_fd, F_ULOCK, (off_t)0) != 0) {
 557                 opkg_perror(ERROR, "unlock failed");
 558         }
 559
 560         close(lock_fd);
 561 }