libopkg/pkg.c

   1 /* pkg.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 "config.h"
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <ctype.h>
  23 #include <unistd.h>
  24 #include <libgen.h>
  25
  26 #include "pkg.h"
  27
  28 #include "pkg_parse.h"
  29 #include "pkg_extract.h"
  30 #include "opkg_message.h"
  31 #include "opkg_utils.h"
  32
  33 #include "libbb/libbb.h"
  34 #include "sprintf_alloc.h"
  35 #include "file_util.h"
  36 #include "xsystem.h"
  37 #include "opkg_conf.h"
  38
  39 typedef struct enum_map enum_map_t;
  40 struct enum_map {
  41         unsigned int value;
  42         const char *str;
  43 };
  44
  45 static const enum_map_t pkg_state_want_map[] = {
  46         {SW_UNKNOWN, "unknown"},
  47         {SW_INSTALL, "install"},
  48         {SW_DEINSTALL, "deinstall"},
  49         {SW_PURGE, "purge"}
  50 };
  51
  52 static const enum_map_t pkg_state_flag_map[] = {
  53         {SF_OK, "ok"},
  54         {SF_REINSTREQ, "reinstreq"},
  55         {SF_HOLD, "hold"},
  56         {SF_REPLACE, "replace"},
  57         {SF_NOPRUNE, "noprune"},
  58         {SF_PREFER, "prefer"},
  59         {SF_OBSOLETE, "obsolete"},
  60         {SF_USER, "user"},
  61 };
  62
  63 static const enum_map_t pkg_state_status_map[] = {
  64         {SS_NOT_INSTALLED, "not-installed"},
  65         {SS_UNPACKED, "unpacked"},
  66         {SS_HALF_CONFIGURED, "half-configured"},
  67         {SS_INSTALLED, "installed"},
  68         {SS_HALF_INSTALLED, "half-installed"},
  69         {SS_CONFIG_FILES, "config-files"},
  70         {SS_POST_INST_FAILED, "post-inst-failed"},
  71         {SS_REMOVAL_FAILED, "removal-failed"}
  72 };
  73
  74 static void pkg_init(pkg_t * pkg)
  75 {
  76         pkg->name = NULL;
  77         pkg->dest = NULL;
  78         pkg->src = NULL;
  79         pkg->state_want = SW_UNKNOWN;
  80         pkg->state_flag = SF_OK;
  81         pkg->state_status = SS_NOT_INSTALLED;
  82
  83         pkg->installed_files = NULL;
  84         pkg->installed_files_ref_cnt = 0;
  85         pkg->essential = 0;
  86         pkg->provided_by_hand = 0;
  87
  88         pkg->arch_index = 0;
  89
  90         blob_buf_init(&pkg->blob, 0);
  91 }
  92
  93 pkg_t *pkg_new(void)
  94 {
  95         pkg_t *pkg;
  96
  97         pkg = xcalloc(1, sizeof(pkg_t));
  98         pkg_init(pkg);
  99
 100         return pkg;
 101 }
 102
 103 void *pkg_set_raw(pkg_t *pkg, int id, const void *val, size_t len)
 104 {
 105         int rem;
 106         struct blob_attr *cur;
 107
 108         blob_for_each_attr(cur, pkg->blob.head, rem) {
 109                 if (blob_id(cur) == id) {
 110                         if (blob_len(cur) < len) {
 111                                 fprintf(stderr, "ERROR: truncating field %d <%p> to %d byte",
 112                                         id, val, blob_len(cur));
 113                         }
 114                         memcpy(blob_data(cur), val, blob_len(cur));
 115                         return blob_data(cur);
 116                 }
 117         }
 118
 119         cur = blob_put(&pkg->blob, id, val, len);
 120         return cur ? blob_data(cur) : NULL;
 121 }
 122
 123 void *pkg_get_raw(const pkg_t * pkg, int id)
 124 {
 125         int rem;
 126         struct blob_attr *cur;
 127
 128         blob_for_each_attr(cur, pkg->blob.head, rem)
 129                 if (blob_id(cur) == id)
 130                         return blob_data(cur);
 131
 132         return NULL;
 133 }
 134
 135 char *pkg_set_string(pkg_t *pkg, int id, const char *s)
 136 {
 137         size_t len;
 138         char *p;
 139
 140         if (!s)
 141                 return NULL;
 142
 143         len = strlen(s);
 144
 145         while (isspace(*s)) {
 146                 s++;
 147                 len--;
 148         }
 149
 150         while (len > 0 && isspace(s[len - 1]))
 151                 len--;
 152
 153         if (!len)
 154                 return NULL;
 155
 156         p = pkg_set_raw(pkg, id, s, len + 1);
 157         p[len] = 0;
 158
 159         return p;
 160 }
 161
 162 char *pkg_get_architecture(const pkg_t *pkg)
 163 {
 164         nv_pair_list_elt_t *l;
 165         int n = 1;
 166
 167         list_for_each_entry(l, &conf->arch_list.head, node) {
 168                 nv_pair_t *nv = (nv_pair_t *) l->data;
 169                 if (n++ == pkg->arch_index)
 170                         return nv->name;
 171         }
 172
 173         return NULL;
 174 }
 175
 176 char *pkg_set_architecture(pkg_t *pkg, const char *architecture, ssize_t len)
 177 {
 178         nv_pair_list_elt_t *l;
 179         int n = 1;
 180
 181         list_for_each_entry(l, &conf->arch_list.head, node) {
 182                 nv_pair_t *nv = (nv_pair_t *) l->data;
 183
 184                 if (!strncmp(nv->name, architecture, len) && nv->name[len] == '\0') {
 185                         if (n >= 8) {
 186                                 opkg_msg(ERROR, "Internal error: too many different architectures\n");
 187                                 break;
 188                         }
 189
 190                         pkg->arch_index = n;
 191                         return nv->name;
 192                 }
 193
 194                 n++;
 195         }
 196
 197         pkg->arch_index = 0;
 198         return NULL;
 199 }
 200
 201 int pkg_get_arch_priority(const pkg_t *pkg)
 202 {
 203         nv_pair_list_elt_t *l;
 204         int n = 1;
 205
 206         list_for_each_entry(l, &conf->arch_list.head, node) {
 207                 nv_pair_t *nv = (nv_pair_t *) l->data;
 208                 if (n++ == pkg->arch_index)
 209                         return strtol(nv->value, NULL, 0);
 210         }
 211
 212         return 0;
 213 }
 214
 215 char *pkg_get_md5(const pkg_t *pkg)
 216 {
 217         char *p = pkg_get_raw(pkg, PKG_MD5SUM);
 218
 219         if (!p)
 220                 return NULL;
 221
 222         return checksum_bin2hex(p, 16);
 223 }
 224
 225 char *pkg_set_md5(pkg_t *pkg, const char *cksum)
 226 {
 227         size_t len;
 228         char *p = checksum_hex2bin(cksum, &len);
 229
 230         if (!p || len != 16)
 231                 return NULL;
 232
 233         return pkg_set_raw(pkg, PKG_MD5SUM, p, len);
 234 }
 235
 236 char *pkg_get_sha256(const pkg_t *pkg)
 237 {
 238         char *p = pkg_get_raw(pkg, PKG_SHA256SUM);
 239
 240         if (!p)
 241                 return NULL;
 242
 243         return checksum_bin2hex(p, 32);
 244 }
 245
 246 char *pkg_set_sha256(pkg_t *pkg, const char *cksum)
 247 {
 248         size_t len;
 249         char *p = checksum_hex2bin(cksum, &len);
 250
 251         if (!p || len != 32)
 252                 return NULL;
 253
 254         return pkg_set_raw(pkg, PKG_SHA256SUM, p, len);
 255 }
 256
 257
 258 static void compound_depend_deinit(compound_depend_t * depends)
 259 {
 260         int i;
 261         for (i = 0; i < depends->possibility_count; i++) {
 262                 depend_t *d;
 263                 d = depends->possibilities[i];
 264                 free(d->version);
 265                 free(d);
 266         }
 267         free(depends->possibilities);
 268 }
 269
 270 void pkg_deinit(pkg_t * pkg)
 271 {
 272         compound_depend_t *deps, *dep;
 273
 274         if (pkg->name)
 275                 free(pkg->name);
 276         pkg->name = NULL;
 277
 278         /* owned by opkg_conf_t */
 279         pkg->dest = NULL;
 280         /* owned by opkg_conf_t */
 281         pkg->src = NULL;
 282
 283         pkg->state_want = SW_UNKNOWN;
 284         pkg->state_flag = SF_OK;
 285         pkg->state_status = SS_NOT_INSTALLED;
 286
 287         deps = pkg_get_ptr(pkg, PKG_DEPENDS);
 288
 289         if (deps) {
 290                 for (dep = deps; dep->type; dep++)
 291                         compound_depend_deinit(dep);
 292
 293                 free(deps);
 294                 pkg_set_ptr(pkg, PKG_DEPENDS, NULL);
 295         }
 296
 297         deps = pkg_get_ptr(pkg, PKG_CONFLICTS);
 298
 299         if (deps) {
 300                 for (dep = deps; dep->type; dep++)
 301                         compound_depend_deinit(dep);
 302
 303                 free(deps);
 304                 pkg_set_ptr(pkg, PKG_CONFLICTS, NULL);
 305         }
 306
 307         //conffile_list_deinit(&pkg->conffiles);
 308
 309         /* XXX: QUESTION: Is forcing this to 1 correct? I suppose so,
 310            since if they are calling deinit, they should know. Maybe do an
 311            assertion here instead? */
 312         pkg->installed_files_ref_cnt = 1;
 313         pkg_free_installed_files(pkg);
 314         pkg->essential = 0;
 315
 316         //blob_buf_free(&pkg->blob);
 317 }
 318
 319 int pkg_init_from_file(pkg_t * pkg, const char *filename)
 320 {
 321         int fd, err = 0;
 322         FILE *control_file;
 323         char *control_path, *tmp;
 324
 325         pkg_init(pkg);
 326
 327         pkg_set_string(pkg, PKG_LOCAL_FILENAME, filename);
 328
 329         tmp = xstrdup(filename);
 330         sprintf_alloc(&control_path, "%s/%s.control.XXXXXX",
 331                       conf->tmp_dir, basename(tmp));
 332         free(tmp);
 333         fd = mkstemp(control_path);
 334         if (fd == -1) {
 335                 opkg_perror(ERROR, "Failed to make temp file %s", control_path);
 336                 err = -1;
 337                 goto err0;
 338         }
 339
 340         control_file = fdopen(fd, "r+");
 341         if (control_file == NULL) {
 342                 opkg_perror(ERROR, "Failed to fdopen %s", control_path);
 343                 close(fd);
 344                 err = -1;
 345                 goto err1;
 346         }
 347
 348         err = pkg_extract_control_file_to_stream(pkg, control_file);
 349         if (err) {
 350                 opkg_msg(ERROR, "Failed to extract control file from %s.\n",
 351                          filename);
 352                 goto err2;
 353         }
 354
 355         rewind(control_file);
 356
 357         if ((err = pkg_parse_from_stream(pkg, control_file, 0))) {
 358                 if (err == 1) {
 359                         opkg_msg(ERROR, "Malformed package file %s.\n",
 360                                  filename);
 361                 }
 362                 err = -1;
 363         }
 364
 365 err2:
 366         fclose(control_file);
 367 err1:
 368         unlink(control_path);
 369 err0:
 370         free(control_path);
 371
 372         return err;
 373 }
 374
 375 /* Merge any new information in newpkg into oldpkg */
 376 int pkg_merge(pkg_t * oldpkg, pkg_t * newpkg)
 377 {
 378         abstract_pkg_t **ab;
 379
 380         if (oldpkg == newpkg) {
 381                 return 0;
 382         }
 383
 384         if (!oldpkg->auto_installed)
 385                 oldpkg->auto_installed = newpkg->auto_installed;
 386
 387         if (!oldpkg->src)
 388                 oldpkg->src = newpkg->src;
 389         if (!oldpkg->dest)
 390                 oldpkg->dest = newpkg->dest;
 391         if (!oldpkg->arch_index)
 392                 oldpkg->arch_index = newpkg->arch_index;
 393         if (!pkg_get_string(oldpkg, PKG_SECTION))
 394                 pkg_set_string(oldpkg, PKG_SECTION, pkg_get_string(newpkg, PKG_SECTION));
 395         if (!pkg_get_string(oldpkg, PKG_MAINTAINER))
 396                 pkg_set_string(oldpkg, PKG_MAINTAINER, pkg_get_string(newpkg, PKG_MAINTAINER));
 397         if (!pkg_get_string(oldpkg, PKG_DESCRIPTION))
 398                 pkg_set_string(oldpkg, PKG_DESCRIPTION, pkg_get_string(newpkg, PKG_DESCRIPTION));
 399
 400         if (!pkg_get_ptr(oldpkg, PKG_DEPENDS)) {
 401                 pkg_set_ptr(oldpkg, PKG_DEPENDS, pkg_get_ptr(newpkg, PKG_DEPENDS));
 402                 pkg_set_ptr(newpkg, PKG_DEPENDS, NULL);
 403         }
 404
 405         ab = pkg_get_ptr(oldpkg, PKG_PROVIDES);
 406
 407         if (!ab || !ab[0] || !ab[1]) {
 408                 pkg_set_ptr(oldpkg, PKG_PROVIDES, pkg_get_ptr(newpkg, PKG_PROVIDES));
 409                 pkg_set_ptr(newpkg, PKG_PROVIDES, NULL);
 410         }
 411
 412         if (!pkg_get_ptr(oldpkg, PKG_CONFLICTS)) {
 413                 pkg_set_ptr(oldpkg, PKG_CONFLICTS, pkg_get_ptr(newpkg, PKG_CONFLICTS));
 414                 pkg_set_ptr(newpkg, PKG_CONFLICTS, NULL);
 415         }
 416
 417         if (!pkg_get_ptr(oldpkg, PKG_REPLACES)) {
 418                 pkg_set_ptr(oldpkg, PKG_REPLACES, pkg_get_ptr(newpkg, PKG_REPLACES));
 419                 pkg_set_ptr(newpkg, PKG_REPLACES, NULL);
 420         }
 421
 422         if (!pkg_get_string(oldpkg, PKG_FILENAME))
 423                 pkg_set_string(oldpkg, PKG_FILENAME, pkg_get_string(newpkg, PKG_FILENAME));
 424         if (!pkg_get_string(oldpkg, PKG_LOCAL_FILENAME))
 425                 pkg_set_string(oldpkg, PKG_LOCAL_FILENAME, pkg_get_string(newpkg, PKG_LOCAL_FILENAME));
 426         if (!pkg_get_string(oldpkg, PKG_TMP_UNPACK_DIR))
 427                 pkg_set_string(oldpkg, PKG_TMP_UNPACK_DIR, pkg_get_string(newpkg, PKG_TMP_UNPACK_DIR));
 428         if (!pkg_get_md5(oldpkg))
 429                 pkg_set_md5(oldpkg, pkg_get_md5(newpkg));
 430         if (!pkg_get_sha256(oldpkg))
 431                 pkg_set_sha256(oldpkg, pkg_get_sha256(newpkg));
 432         if (!pkg_get_int(oldpkg, PKG_SIZE))
 433                 pkg_set_int(oldpkg, PKG_SIZE, pkg_get_int(newpkg, PKG_SIZE));
 434         if (!pkg_get_int(oldpkg, PKG_INSTALLED_SIZE))
 435                 pkg_set_int(oldpkg, PKG_INSTALLED_SIZE, pkg_get_int(newpkg, PKG_INSTALLED_SIZE));
 436         if (!pkg_get_string(oldpkg, PKG_PRIORITY))
 437                 pkg_set_string(oldpkg, PKG_PRIORITY, pkg_get_string(newpkg, PKG_PRIORITY));
 438         if (!pkg_get_string(oldpkg, PKG_SOURCE))
 439                 pkg_set_string(oldpkg, PKG_SOURCE, pkg_get_string(newpkg, PKG_SOURCE));
 440
 441         if (!pkg_get_ptr(oldpkg, PKG_CONFFILES)) {
 442                 pkg_set_ptr(oldpkg, PKG_CONFFILES, pkg_get_ptr(newpkg, PKG_CONFFILES));
 443                 pkg_set_ptr(newpkg, PKG_CONFFILES, NULL);
 444         }
 445
 446         if (!oldpkg->installed_files) {
 447                 oldpkg->installed_files = newpkg->installed_files;
 448                 oldpkg->installed_files_ref_cnt =
 449                     newpkg->installed_files_ref_cnt;
 450                 newpkg->installed_files = NULL;
 451         }
 452
 453         if (!oldpkg->essential)
 454                 oldpkg->essential = newpkg->essential;
 455
 456         return 0;
 457 }
 458
 459 static void abstract_pkg_init(abstract_pkg_t * ab_pkg)
 460 {
 461         ab_pkg->provided_by = abstract_pkg_vec_alloc();
 462         ab_pkg->dependencies_checked = 0;
 463         ab_pkg->state_status = SS_NOT_INSTALLED;
 464 }
 465
 466 abstract_pkg_t *abstract_pkg_new(void)
 467 {
 468         abstract_pkg_t *ab_pkg;
 469
 470         ab_pkg = xcalloc(1, sizeof(abstract_pkg_t));
 471         abstract_pkg_init(ab_pkg);
 472
 473         return ab_pkg;
 474 }
 475
 476 void set_flags_from_control(pkg_t * pkg)
 477 {
 478         char *file_name;
 479         FILE *fp;
 480
 481         sprintf_alloc(&file_name, "%s/%s.control", pkg->dest->info_dir,
 482                       pkg->name);
 483
 484         fp = fopen(file_name, "r");
 485         if (fp == NULL) {
 486                 opkg_perror(ERROR, "Failed to open %s", file_name);
 487                 free(file_name);
 488                 return;
 489         }
 490
 491         free(file_name);
 492
 493         if (pkg_parse_from_stream(pkg, fp, PFM_ALL ^ PFM_ESSENTIAL)) {
 494                 opkg_msg(DEBUG,
 495                          "Unable to read control file for %s. May be empty.\n",
 496                          pkg->name);
 497         }
 498
 499         fclose(fp);
 500
 501         return;
 502 }
 503
 504 static const char *pkg_state_want_to_str(pkg_state_want_t sw)
 505 {
 506         int i;
 507
 508         for (i = 0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
 509                 if (pkg_state_want_map[i].value == sw) {
 510                         return pkg_state_want_map[i].str;
 511                 }
 512         }
 513
 514         opkg_msg(ERROR, "Internal error: state_want=%d\n", sw);
 515         return "<STATE_WANT_UNKNOWN>";
 516 }
 517
 518 pkg_state_want_t pkg_state_want_from_str(char *str)
 519 {
 520         int i;
 521
 522         for (i = 0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
 523                 if (strcmp(str, pkg_state_want_map[i].str) == 0) {
 524                         return pkg_state_want_map[i].value;
 525                 }
 526         }
 527
 528         opkg_msg(ERROR, "Internal error: state_want=%s\n", str);
 529         return SW_UNKNOWN;
 530 }
 531
 532 static char *pkg_state_flag_to_str(pkg_state_flag_t sf)
 533 {
 534         int i;
 535         unsigned int len;
 536         char *str;
 537
 538         /* clear the temporary flags before converting to string */
 539         sf &= SF_NONVOLATILE_FLAGS;
 540
 541         if (sf == 0)
 542                 return xstrdup("ok");
 543
 544         len = 0;
 545         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 546                 if (sf & pkg_state_flag_map[i].value)
 547                         len += strlen(pkg_state_flag_map[i].str) + 1;
 548         }
 549
 550         str = xmalloc(len + 1);
 551         str[0] = '\0';
 552
 553         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 554                 if (sf & pkg_state_flag_map[i].value) {
 555                         strncat(str, pkg_state_flag_map[i].str, len);
 556                         strncat(str, ",", len);
 557                 }
 558         }
 559
 560         len = strlen(str);
 561         str[len - 1] = '\0';    /* squash last comma */
 562
 563         return str;
 564 }
 565
 566 pkg_state_flag_t pkg_state_flag_from_str(const char *str)
 567 {
 568         int i;
 569         int sf = SF_OK;
 570         const char *sfname;
 571         unsigned int sfname_len;
 572
 573         if (strcmp(str, "ok") == 0) {
 574                 return SF_OK;
 575         }
 576         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 577                 sfname = pkg_state_flag_map[i].str;
 578                 sfname_len = strlen(sfname);
 579                 if (strncmp(str, sfname, sfname_len) == 0) {
 580                         sf |= pkg_state_flag_map[i].value;
 581                         str += sfname_len;
 582                         if (str[0] == ',') {
 583                                 str++;
 584                         } else {
 585                                 break;
 586                         }
 587                 }
 588         }
 589
 590         return sf;
 591 }
 592
 593 static const char *pkg_state_status_to_str(pkg_state_status_t ss)
 594 {
 595         int i;
 596
 597         for (i = 0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
 598                 if (pkg_state_status_map[i].value == ss) {
 599                         return pkg_state_status_map[i].str;
 600                 }
 601         }
 602
 603         opkg_msg(ERROR, "Internal error: state_status=%d\n", ss);
 604         return "<STATE_STATUS_UNKNOWN>";
 605 }
 606
 607 pkg_state_status_t pkg_state_status_from_str(const char *str)
 608 {
 609         int i;
 610
 611         for (i = 0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
 612                 if (strcmp(str, pkg_state_status_map[i].str) == 0) {
 613                         return pkg_state_status_map[i].value;
 614                 }
 615         }
 616
 617         opkg_msg(ERROR, "Internal error: state_status=%s\n", str);
 618         return SS_NOT_INSTALLED;
 619 }
 620
 621 void pkg_formatted_field(FILE * fp, pkg_t * pkg, const char *field)
 622 {
 623         int i, j;
 624         char *str;
 625         const char *p;
 626         compound_depend_t *dep;
 627         abstract_pkg_t **ab_pkg;
 628
 629         if (strlen(field) < PKG_MINIMUM_FIELD_NAME_LEN) {
 630                 goto UNKNOWN_FMT_FIELD;
 631         }
 632
 633         switch (field[0]) {
 634         case 'a':
 635         case 'A':
 636                 if (strcasecmp(field, "Architecture") == 0) {
 637                         p = pkg_get_architecture(pkg);
 638                         if (p) {
 639                                 fprintf(fp, "Architecture: %s\n",
 640                                         p);
 641                         }
 642                 } else if (strcasecmp(field, "Auto-Installed") == 0) {
 643                         if (pkg->auto_installed)
 644                                 fprintf(fp, "Auto-Installed: yes\n");
 645                 } else {
 646                         goto UNKNOWN_FMT_FIELD;
 647                 }
 648                 break;
 649         case 'c':
 650         case 'C':
 651                 if (strcasecmp(field, "Conffiles") == 0) {
 652                         conffile_list_t *cl;
 653                         conffile_list_elt_t *iter;
 654
 655                         cl = pkg_get_ptr(pkg, PKG_CONFFILES);
 656
 657                         if (!cl || nv_pair_list_empty(cl))
 658                                 return;
 659
 660                         fprintf(fp, "Conffiles:\n");
 661                         for (iter = nv_pair_list_first(cl); iter;
 662                              iter = nv_pair_list_next(cl, iter)) {
 663                                 if (((conffile_t *) iter->data)->name
 664                                     && ((conffile_t *) iter->data)->value) {
 665                                         fprintf(fp, " %s %s\n",
 666                                                 ((conffile_t *) iter->data)->
 667                                                 name,
 668                                                 ((conffile_t *) iter->data)->
 669                                                 value);
 670                                 }
 671                         }
 672                 } else if (strcasecmp(field, "Conflicts") == 0) {
 673                         struct depend *cdep;
 674                         compound_depend_t *deps, *dep;
 675                         deps = pkg_get_ptr(pkg, PKG_CONFLICTS);
 676                         if (deps) {
 677                                 fprintf(fp, "Conflicts:");
 678                                 for (i = 0, dep = deps; dep->type; dep++, i++) {
 679                                         cdep = dep->possibilities[0];
 680                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 681                                                 cdep->pkg->name);
 682                                         if (cdep->version) {
 683                                                 fprintf(fp, " (%s%s)",
 684                                                         constraint_to_str(cdep->
 685                                                                           constraint),
 686                                                         cdep->version);
 687                                         }
 688                                 }
 689                                 fprintf(fp, "\n");
 690                         }
 691                 } else {
 692                         goto UNKNOWN_FMT_FIELD;
 693                 }
 694                 break;
 695         case 'd':
 696         case 'D':
 697                 if (strcasecmp(field, "Depends") == 0) {
 698                         dep = pkg_get_depends(pkg, DEPEND);
 699                         if (dep) {
 700                                 fprintf(fp, "Depends:");
 701                                 for (i = 0, j = 0; dep && dep->type; i++, dep++) {
 702                                         if (dep->type != DEPEND)
 703                                                 continue;
 704                                         str = pkg_depend_str(pkg, i);
 705                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 706                                                 str);
 707                                         free(str);
 708                                         j++;
 709                                 }
 710                                 fprintf(fp, "\n");
 711                         }
 712                 } else if (strcasecmp(field, "Description") == 0) {
 713                         p = pkg_get_string(pkg, PKG_DESCRIPTION);
 714                         if (p) {
 715                                 fprintf(fp, "Description: %s\n",
 716                                         p);
 717                         }
 718                 } else {
 719                         goto UNKNOWN_FMT_FIELD;
 720                 }
 721                 break;
 722         case 'e':
 723         case 'E':
 724                 if (pkg->essential) {
 725                         fprintf(fp, "Essential: yes\n");
 726                 }
 727                 break;
 728         case 'f':
 729         case 'F':
 730                 p = pkg_get_string(pkg, PKG_FILENAME);
 731                 if (p) {
 732                         fprintf(fp, "Filename: %s\n", p);
 733                 }
 734                 break;
 735         case 'i':
 736         case 'I':
 737                 if (strcasecmp(field, "Installed-Size") == 0) {
 738                         fprintf(fp, "Installed-Size: %lu\n",
 739                                 (unsigned long) pkg_get_int(pkg, PKG_INSTALLED_SIZE));
 740                 } else if (strcasecmp(field, "Installed-Time") == 0) {
 741                         i = pkg_get_int(pkg, PKG_INSTALLED_TIME);
 742                         if (i) {
 743                                 fprintf(fp, "Installed-Time: %lu\n",
 744                                         (unsigned long) i);
 745                         }
 746                 }
 747                 break;
 748         case 'm':
 749         case 'M':
 750                 if (strcasecmp(field, "Maintainer") == 0) {
 751                         p = pkg_get_string(pkg, PKG_MAINTAINER);
 752                         if (p) {
 753                                 fprintf(fp, "Maintainer: %s\n", p);
 754                         }
 755                 } else if (strcasecmp(field, "MD5sum") == 0) {
 756                         p = pkg_get_md5(pkg);
 757                         if (p) {
 758                                 fprintf(fp, "MD5Sum: %s\n", p);
 759                         }
 760                 } else {
 761                         goto UNKNOWN_FMT_FIELD;
 762                 }
 763                 break;
 764         case 'p':
 765         case 'P':
 766                 if (strcasecmp(field, "Package") == 0) {
 767                         fprintf(fp, "Package: %s\n", pkg->name);
 768                 } else if (strcasecmp(field, "Priority") == 0) {
 769                         fprintf(fp, "Priority: %s\n", pkg_get_string(pkg, PKG_PRIORITY));
 770                 } else if (strcasecmp(field, "Provides") == 0) {
 771                         ab_pkg = pkg_get_ptr(pkg, PKG_PROVIDES);
 772                         if (ab_pkg && ab_pkg[0] && ab_pkg[1]) {
 773                                 fprintf(fp, "Provides:");
 774                                 for (i = 0, ab_pkg++; *ab_pkg; i++, ab_pkg++) {
 775                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 776                                                 (*ab_pkg)->name);
 777                                         ab_pkg++;
 778                                 }
 779                                 fprintf(fp, "\n");
 780                         }
 781                 } else {
 782                         goto UNKNOWN_FMT_FIELD;
 783                 }
 784                 break;
 785         case 'r':
 786         case 'R':
 787                 if (strcasecmp(field, "Replaces") == 0) {
 788                         ab_pkg = pkg_get_ptr(pkg, PKG_REPLACES);
 789                         if (ab_pkg && *ab_pkg) {
 790                                 fprintf(fp, "Replaces:");
 791                                 for (i = 0; *ab_pkg; i++, ab_pkg++) {
 792                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 793                                                 (*ab_pkg)->name);
 794                                 }
 795                                 fprintf(fp, "\n");
 796                         }
 797                 } else if (strcasecmp(field, "Recommends") == 0) {
 798                         dep = pkg_get_depends(pkg, RECOMMEND);
 799                         if (dep) {
 800                                 fprintf(fp, "Recommends:");
 801                                 for (j = 0, i = 0; dep && dep->type; i++, dep++) {
 802                                         if (dep->type != RECOMMEND)
 803                                                 continue;
 804                                         str = pkg_depend_str(pkg, i);
 805                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 806                                                 str);
 807                                         free(str);
 808                                         j++;
 809                                 }
 810                                 fprintf(fp, "\n");
 811                         }
 812                 } else {
 813                         goto UNKNOWN_FMT_FIELD;
 814                 }
 815                 break;
 816         case 's':
 817         case 'S':
 818                 if (strcasecmp(field, "Section") == 0) {
 819                         p = pkg_get_string(pkg, PKG_SECTION);
 820                         if (p) {
 821                                 fprintf(fp, "Section: %s\n", p);
 822                         }
 823 #if defined HAVE_SHA256
 824                 } else if (strcasecmp(field, "SHA256sum") == 0) {
 825                         p = pkg_get_string(pkg, PKG_SHA256SUM);
 826                         if (p) {
 827                                 fprintf(fp, "SHA256sum: %s\n", p);
 828                         }
 829 #endif
 830                 } else if (strcasecmp(field, "Size") == 0) {
 831                         i = pkg_get_int(pkg, PKG_SIZE);
 832                         if (i) {
 833                                 fprintf(fp, "Size: %lu\n", (unsigned long) i);
 834                         }
 835                 } else if (strcasecmp(field, "Source") == 0) {
 836                         p = pkg_get_string(pkg, PKG_SOURCE);
 837                         if (p) {
 838                                 fprintf(fp, "Source: %s\n", p);
 839                         }
 840                 } else if (strcasecmp(field, "Status") == 0) {
 841                         char *pflag = pkg_state_flag_to_str(pkg->state_flag);
 842                         fprintf(fp, "Status: %s %s %s\n",
 843                                 pkg_state_want_to_str(pkg->state_want),
 844                                 pflag,
 845                                 pkg_state_status_to_str(pkg->state_status));
 846                         free(pflag);
 847                 } else if (strcasecmp(field, "Suggests") == 0) {
 848                         dep = pkg_get_depends(pkg, SUGGEST);
 849                         if (dep) {
 850                                 fprintf(fp, "Suggests:");
 851                                 for (j = 0, i = 0; dep && dep->type; i++, dep++) {
 852                                         if (dep->type != SUGGEST)
 853                                                 continue;
 854                                         str = pkg_depend_str(pkg, i);
 855                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 856                                                 str);
 857                                         free(str);
 858                                         j++;
 859                                 }
 860                                 fprintf(fp, "\n");
 861                         }
 862                 } else {
 863                         goto UNKNOWN_FMT_FIELD;
 864                 }
 865                 break;
 866         case 't':
 867         case 'T':
 868                 if (strcasecmp(field, "Tags") == 0) {
 869                         p = pkg_get_string(pkg, PKG_TAGS);
 870                         if (p) {
 871                                 fprintf(fp, "Tags: %s\n", p);
 872                         }
 873                 }
 874                 break;
 875         case 'v':
 876         case 'V':
 877                 {
 878                         char *version = pkg_version_str_alloc(pkg);
 879                         if (version == NULL)
 880                                 return;
 881                         fprintf(fp, "Version: %s\n", version);
 882                         free(version);
 883                 }
 884                 break;
 885         default:
 886                 goto UNKNOWN_FMT_FIELD;
 887         }
 888
 889         return;
 890
 891 UNKNOWN_FMT_FIELD:
 892         opkg_msg(ERROR, "Internal error: field=%s\n", field);
 893 }
 894
 895 void pkg_formatted_info(FILE * fp, pkg_t * pkg)
 896 {
 897         pkg_formatted_field(fp, pkg, "Package");
 898         pkg_formatted_field(fp, pkg, "Version");
 899         pkg_formatted_field(fp, pkg, "Depends");
 900         pkg_formatted_field(fp, pkg, "Recommends");
 901         pkg_formatted_field(fp, pkg, "Suggests");
 902         pkg_formatted_field(fp, pkg, "Provides");
 903         pkg_formatted_field(fp, pkg, "Replaces");
 904         pkg_formatted_field(fp, pkg, "Conflicts");
 905         pkg_formatted_field(fp, pkg, "Status");
 906         pkg_formatted_field(fp, pkg, "Section");
 907         pkg_formatted_field(fp, pkg, "Essential");
 908         pkg_formatted_field(fp, pkg, "Architecture");
 909         pkg_formatted_field(fp, pkg, "Maintainer");
 910         pkg_formatted_field(fp, pkg, "MD5sum");
 911         pkg_formatted_field(fp, pkg, "Size");
 912         pkg_formatted_field(fp, pkg, "Filename");
 913         pkg_formatted_field(fp, pkg, "Conffiles");
 914         pkg_formatted_field(fp, pkg, "Source");
 915         pkg_formatted_field(fp, pkg, "Description");
 916         pkg_formatted_field(fp, pkg, "Installed-Time");
 917         pkg_formatted_field(fp, pkg, "Tags");
 918         fputs("\n", fp);
 919 }
 920
 921 void pkg_print_status(pkg_t * pkg, FILE * file)
 922 {
 923         if (pkg == NULL) {
 924                 return;
 925         }
 926
 927         pkg_formatted_field(file, pkg, "Package");
 928         pkg_formatted_field(file, pkg, "Version");
 929         pkg_formatted_field(file, pkg, "Depends");
 930         pkg_formatted_field(file, pkg, "Recommends");
 931         pkg_formatted_field(file, pkg, "Suggests");
 932         pkg_formatted_field(file, pkg, "Provides");
 933         pkg_formatted_field(file, pkg, "Replaces");
 934         pkg_formatted_field(file, pkg, "Conflicts");
 935         pkg_formatted_field(file, pkg, "Status");
 936         pkg_formatted_field(file, pkg, "Essential");
 937         pkg_formatted_field(file, pkg, "Architecture");
 938         pkg_formatted_field(file, pkg, "Conffiles");
 939         pkg_formatted_field(file, pkg, "Installed-Time");
 940         pkg_formatted_field(file, pkg, "Auto-Installed");
 941         fputs("\n", file);
 942 }
 943
 944 /*
 945  * libdpkg - Debian packaging suite library routines
 946  * vercmp.c - comparison of version numbers
 947  *
 948  * Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk>
 949  */
 950
 951 /* assume ascii; warning: evaluates x multiple times! */
 952 #define order(x) ((x) == '~' ? -1 \
 953                 : isdigit((x)) ? 0 \
 954                 : !(x) ? 0 \
 955                 : isalpha((x)) ? (x) \
 956                 : (x) + 256)
 957
 958 static int verrevcmp(const char *val, const char *ref)
 959 {
 960         if (!val)
 961                 val = "";
 962         if (!ref)
 963                 ref = "";
 964
 965         while (*val || *ref) {
 966                 int first_diff = 0;
 967
 968                 while ((*val && !isdigit(*val)) || (*ref && !isdigit(*ref))) {
 969                         int vc = order(*val), rc = order(*ref);
 970                         if (vc != rc)
 971                                 return vc - rc;
 972                         val++;
 973                         ref++;
 974                 }
 975
 976                 while (*val == '0')
 977                         val++;
 978                 while (*ref == '0')
 979                         ref++;
 980                 while (isdigit(*val) && isdigit(*ref)) {
 981                         if (!first_diff)
 982                                 first_diff = *val - *ref;
 983                         val++;
 984                         ref++;
 985                 }
 986                 if (isdigit(*val))
 987                         return 1;
 988                 if (isdigit(*ref))
 989                         return -1;
 990                 if (first_diff)
 991                         return first_diff;
 992         }
 993         return 0;
 994 }
 995
 996 int pkg_compare_versions(const pkg_t * pkg, const pkg_t * ref_pkg)
 997 {
 998         unsigned int epoch1 = (unsigned int) pkg_get_int(pkg, PKG_EPOCH);
 999         unsigned int epoch2 = (unsigned int) pkg_get_int(ref_pkg, PKG_EPOCH);
1000         char *revision1 = pkg_get_string(pkg, PKG_REVISION);
1001         char *revision2 = pkg_get_string(ref_pkg, PKG_REVISION);
1002         const char *version1 = pkg_get_string(pkg, PKG_VERSION);
1003         const char *version2 = pkg_get_string(ref_pkg, PKG_VERSION);
1004         int r;
1005
1006         if (epoch1 > epoch2) {
1007                 return 1;
1008         }
1009
1010         if (epoch1 < epoch2) {
1011                 return -1;
1012         }
1013
1014         r = verrevcmp(version1, version2);
1015         if (r) {
1016                 return r;
1017         }
1018
1019         r = verrevcmp(revision1, revision2);
1020         if (r) {
1021                 return r;
1022         }
1023
1024         return r;
1025 }
1026
1027 int pkg_version_satisfied(pkg_t * it, pkg_t * ref, const char *op)
1028 {
1029         int r;
1030
1031         r = pkg_compare_versions(it, ref);
1032
1033         if (strcmp(op, "<=") == 0 || strcmp(op, "<") == 0) {
1034                 return r <= 0;
1035         }
1036
1037         if (strcmp(op, ">=") == 0 || strcmp(op, ">") == 0) {
1038                 return r >= 0;
1039         }
1040
1041         if (strcmp(op, "<<") == 0) {
1042                 return r < 0;
1043         }
1044
1045         if (strcmp(op, ">>") == 0) {
1046                 return r > 0;
1047         }
1048
1049         if (strcmp(op, "=") == 0) {
1050                 return r == 0;
1051         }
1052
1053         opkg_msg(ERROR, "Unknown operator: %s.\n", op);
1054         return 0;
1055 }
1056
1057 int pkg_name_version_and_architecture_compare(const void *p1, const void *p2)
1058 {
1059         const pkg_t * a = *(const pkg_t **)p1;
1060         const pkg_t * b = *(const pkg_t **)p2;
1061         int namecmp;
1062         int vercmp;
1063         int arch_prio1, arch_prio2;
1064         if (!a->name || !b->name) {
1065                 opkg_msg(ERROR, "Internal error: a->name=%p, b->name=%p.\n",
1066                          a->name, b->name);
1067                 return 0;
1068         }
1069
1070         namecmp = strcmp(a->name, b->name);
1071         if (namecmp)
1072                 return namecmp;
1073         vercmp = pkg_compare_versions(a, b);
1074         if (vercmp)
1075                 return vercmp;
1076         arch_prio1 = pkg_get_arch_priority(a);
1077         arch_prio2 = pkg_get_arch_priority(b);
1078         if (!arch_prio1 || !arch_prio2) {
1079                 opkg_msg(ERROR,
1080                          "Internal error: a->arch_priority=%i b->arch_priority=%i.\n",
1081                          arch_prio1, arch_prio2);
1082                 return 0;
1083         }
1084         if (arch_prio1 > arch_prio2)
1085                 return 1;
1086         if (arch_prio1 < arch_prio2)
1087                 return -1;
1088         return 0;
1089 }
1090
1091 int abstract_pkg_name_compare(const void *p1, const void *p2)
1092 {
1093         const abstract_pkg_t *a = *(const abstract_pkg_t **)p1;
1094         const abstract_pkg_t *b = *(const abstract_pkg_t **)p2;
1095         if (!a->name || !b->name) {
1096                 opkg_msg(ERROR, "Internal error: a->name=%p b->name=%p.\n",
1097                          a->name, b->name);
1098                 return 0;
1099         }
1100         return strcmp(a->name, b->name);
1101 }
1102
1103 char *pkg_version_str_alloc(pkg_t * pkg)
1104 {
1105         const char *verstr;
1106         char *version, *revptr;
1107         unsigned int epoch = (unsigned int) pkg_get_int(pkg, PKG_EPOCH);
1108
1109         revptr = pkg_get_string(pkg, PKG_REVISION);
1110         verstr = pkg_get_string(pkg, PKG_VERSION);
1111
1112         if (epoch) {
1113                 if (revptr)
1114                         sprintf_alloc(&version, "%d:%s-%s",
1115                                       epoch, verstr, revptr);
1116                 else
1117                         sprintf_alloc(&version, "%d:%s",
1118                                       epoch, verstr);
1119         } else {
1120                 if (revptr)
1121                         sprintf_alloc(&version, "%s-%s",
1122                                       verstr, revptr);
1123                 else
1124                         version = xstrdup(verstr);
1125         }
1126
1127         return version;
1128 }
1129
1130 /*
1131  * XXX: this should be broken into two functions
1132  */
1133 str_list_t *pkg_get_installed_files(pkg_t * pkg)
1134 {
1135         int err, fd;
1136         char *list_file_name = NULL;
1137         FILE *list_file = NULL;
1138         char *line;
1139         char *installed_file_name;
1140         unsigned int rootdirlen = 0;
1141         int list_from_package;
1142         const char *local_filename;
1143
1144         pkg->installed_files_ref_cnt++;
1145
1146         if (pkg->installed_files) {
1147                 return pkg->installed_files;
1148         }
1149
1150         pkg->installed_files = str_list_alloc();
1151
1152         /*
1153          * For installed packages, look at the package.list file in the database.
1154          * For uninstalled packages, get the file list directly from the package.
1155          */
1156         if (pkg->state_status == SS_NOT_INSTALLED || pkg->dest == NULL)
1157                 list_from_package = 1;
1158         else
1159                 list_from_package = 0;
1160
1161         if (list_from_package) {
1162                 local_filename = pkg_get_string(pkg, PKG_LOCAL_FILENAME);
1163
1164                 if (!local_filename) {
1165                         return pkg->installed_files;
1166                 }
1167                 /* XXX: CLEANUP: Maybe rewrite this to avoid using a temporary
1168                    file. In other words, change deb_extract so that it can
1169                    simply return the file list as a char *[] rather than
1170                    insisting on writing it to a FILE * as it does now. */
1171                 sprintf_alloc(&list_file_name, "%s/%s.list.XXXXXX",
1172                               conf->tmp_dir, pkg->name);
1173                 fd = mkstemp(list_file_name);
1174                 if (fd == -1) {
1175                         opkg_perror(ERROR, "Failed to make temp file %s.",
1176                                     list_file_name);
1177                         free(list_file_name);
1178                         return pkg->installed_files;
1179                 }
1180                 list_file = fdopen(fd, "r+");
1181                 if (list_file == NULL) {
1182                         opkg_perror(ERROR, "Failed to fdopen temp file %s.",
1183                                     list_file_name);
1184                         close(fd);
1185                         unlink(list_file_name);
1186                         free(list_file_name);
1187                         return pkg->installed_files;
1188                 }
1189                 err = pkg_extract_data_file_names_to_stream(pkg, list_file);
1190                 if (err) {
1191                         opkg_msg(ERROR, "Error extracting file list from %s.\n",
1192                                  local_filename);
1193                         fclose(list_file);
1194                         unlink(list_file_name);
1195                         free(list_file_name);
1196                         str_list_deinit(pkg->installed_files);
1197                         pkg->installed_files = NULL;
1198                         return NULL;
1199                 }
1200                 rewind(list_file);
1201         } else {
1202                 sprintf_alloc(&list_file_name, "%s/%s.list",
1203                               pkg->dest->info_dir, pkg->name);
1204                 list_file = fopen(list_file_name, "r");
1205                 if (list_file == NULL) {
1206                         opkg_perror(ERROR, "Failed to open %s", list_file_name);
1207                         free(list_file_name);
1208                         return pkg->installed_files;
1209                 }
1210                 free(list_file_name);
1211         }
1212
1213         if (conf->offline_root)
1214                 rootdirlen = strlen(conf->offline_root);
1215
1216         while (1) {
1217                 char *file_name;
1218
1219                 line = file_read_line_alloc(list_file);
1220                 if (line == NULL) {
1221                         break;
1222                 }
1223                 file_name = line;
1224
1225                 if (list_from_package) {
1226                         if (*file_name == '.') {
1227                                 file_name++;
1228                         }
1229                         if (*file_name == '/') {
1230                                 file_name++;
1231                         }
1232                         sprintf_alloc(&installed_file_name, "%s%s",
1233                                       pkg->dest->root_dir, file_name);
1234                 } else {
1235                         if (conf->offline_root &&
1236                             strncmp(conf->offline_root, file_name,
1237                                     rootdirlen)) {
1238                                 sprintf_alloc(&installed_file_name, "%s%s",
1239                                               conf->offline_root, file_name);
1240                         } else {
1241                                 // already contains root_dir as header -> ABSOLUTE
1242                                 sprintf_alloc(&installed_file_name, "%s",
1243                                               file_name);
1244                         }
1245                 }
1246                 str_list_append(pkg->installed_files, installed_file_name);
1247                 free(installed_file_name);
1248                 free(line);
1249         }
1250
1251         fclose(list_file);
1252
1253         if (list_from_package) {
1254                 unlink(list_file_name);
1255                 free(list_file_name);
1256         }
1257
1258         return pkg->installed_files;
1259 }
1260
1261 /* XXX: CLEANUP: This function and it's counterpart,
1262    (pkg_get_installed_files), do not match our init/deinit naming
1263    convention. Nor the alloc/free convention. But, then again, neither
1264    of these conventions currrently fit the way these two functions
1265    work. */
1266 void pkg_free_installed_files(pkg_t * pkg)
1267 {
1268         pkg->installed_files_ref_cnt--;
1269
1270         if (pkg->installed_files_ref_cnt > 0)
1271                 return;
1272
1273         if (pkg->installed_files) {
1274                 str_list_purge(pkg->installed_files);
1275         }
1276
1277         pkg->installed_files = NULL;
1278 }
1279
1280 void pkg_remove_installed_files_list(pkg_t * pkg)
1281 {
1282         char *list_file_name;
1283
1284         sprintf_alloc(&list_file_name, "%s/%s.list",
1285                       pkg->dest->info_dir, pkg->name);
1286
1287         if (!conf->noaction)
1288                 (void)unlink(list_file_name);
1289
1290         free(list_file_name);
1291 }
1292
1293 conffile_t *pkg_get_conffile(pkg_t * pkg, const char *file_name)
1294 {
1295         conffile_list_elt_t *iter;
1296         conffile_list_t *cl;
1297         conffile_t *conffile;
1298
1299         if (pkg == NULL) {
1300                 return NULL;
1301         }
1302
1303         cl = pkg_get_ptr(pkg, PKG_CONFFILES);
1304
1305         for (iter = cl ? nv_pair_list_first(cl) : NULL; iter;
1306              iter = nv_pair_list_next(cl, iter)) {
1307                 conffile = (conffile_t *) iter->data;
1308
1309                 if (strcmp(conffile->name, file_name) == 0) {
1310                         return conffile;
1311                 }
1312         }
1313
1314         return NULL;
1315 }
1316
1317 int pkg_run_script(pkg_t * pkg, const char *script, const char *args)
1318 {
1319         int err;
1320         char *path;
1321         char *cmd;
1322         char *tmp_unpack_dir;
1323
1324         if (conf->noaction)
1325                 return 0;
1326
1327         /* XXX: FEATURE: When conf->offline_root is set, we should run the
1328            maintainer script within a chroot environment. */
1329         if (conf->offline_root && !conf->force_postinstall) {
1330                 opkg_msg(INFO, "Offline root mode: not running %s.%s.\n",
1331                          pkg->name, script);
1332                 return 0;
1333         }
1334
1335         /* Installed packages have scripts in pkg->dest->info_dir, uninstalled packages
1336            have scripts in tmp_unpack_dir. */
1337         if (pkg->state_status == SS_INSTALLED
1338             || pkg->state_status == SS_UNPACKED) {
1339                 if (pkg->dest == NULL) {
1340                         opkg_msg(ERROR, "Internal error: %s has a NULL dest.\n",
1341                                  pkg->name);
1342                         return -1;
1343                 }
1344                 sprintf_alloc(&path, "%s/%s.%s", pkg->dest->info_dir, pkg->name,
1345                               script);
1346         } else {
1347                 tmp_unpack_dir = pkg_get_string(pkg, PKG_TMP_UNPACK_DIR);
1348                 if (tmp_unpack_dir == NULL) {
1349                         opkg_msg(ERROR,
1350                                  "Internal error: %s has a NULL tmp_unpack_dir.\n",
1351                                  pkg->name);
1352                         return -1;
1353                 }
1354                 sprintf_alloc(&path, "%s/%s", tmp_unpack_dir, script);
1355         }
1356
1357         opkg_msg(INFO, "Running script %s.\n", path);
1358
1359         setenv("PKG_ROOT",
1360                pkg->dest ? pkg->dest->root_dir : conf->default_dest->root_dir,
1361                1);
1362
1363         if (pkg->is_upgrade)
1364                 setenv("PKG_UPGRADE", "1", 1);
1365         else
1366                 setenv("PKG_UPGRADE", "0", 1);
1367
1368         if (!file_exists(path)) {
1369                 free(path);
1370                 return 0;
1371         }
1372
1373         sprintf_alloc(&cmd, "%s %s", path, args);
1374         free(path);
1375         {
1376                 const char *argv[] = { "sh", "-c", cmd, NULL };
1377                 err = xsystem(argv);
1378         }
1379         free(cmd);
1380
1381         if (err) {
1382                 opkg_msg(ERROR,
1383                          "package \"%s\" %s script returned status %d.\n",
1384                          pkg->name, script, err);
1385                 return err;
1386         }
1387
1388         return 0;
1389 }
1390
1391 int pkg_arch_supported(pkg_t * pkg)
1392 {
1393         nv_pair_list_elt_t *l;
1394         char *architecture = pkg_get_architecture(pkg);
1395
1396         if (!architecture)
1397                 return 1;
1398
1399         list_for_each_entry(l, &conf->arch_list.head, node) {
1400                 nv_pair_t *nv = (nv_pair_t *) l->data;
1401                 if (strcmp(nv->name, architecture) == 0) {
1402                         opkg_msg(DEBUG,
1403                                  "Arch %s (priority %s) supported for pkg %s.\n",
1404                                  nv->name, nv->value, pkg->name);
1405                         return 1;
1406                 }
1407         }
1408
1409         opkg_msg(DEBUG, "Arch %s unsupported for pkg %s.\n",
1410                  architecture, pkg->name);
1411         return 0;
1412 }
1413
1414 void pkg_info_preinstall_check(void)
1415 {
1416         int i;
1417         pkg_vec_t *installed_pkgs = pkg_vec_alloc();
1418
1419         /* update the file owner data structure */
1420         opkg_msg(INFO, "Updating file owner list.\n");
1421         pkg_hash_fetch_all_installed(installed_pkgs);
1422         for (i = 0; i < installed_pkgs->len; i++) {
1423                 pkg_t *pkg = installed_pkgs->pkgs[i];
1424                 str_list_t *installed_files = pkg_get_installed_files(pkg);     /* this causes installed_files to be cached */
1425                 str_list_elt_t *iter, *niter;
1426                 if (installed_files == NULL) {
1427                         opkg_msg(ERROR, "Failed to determine installed "
1428                                  "files for pkg %s.\n", pkg->name);
1429                         break;
1430                 }
1431                 for (iter = str_list_first(installed_files), niter =
1432                      str_list_next(installed_files, iter); iter;
1433                      iter = niter, niter =
1434                      str_list_next(installed_files, iter)) {
1435                         char *installed_file = (char *)iter->data;
1436                         file_hash_set_file_owner(installed_file, pkg);
1437                 }
1438                 pkg_free_installed_files(pkg);
1439         }
1440         pkg_vec_free(installed_pkgs);
1441 }
1442
1443 struct pkg_write_filelist_data {
1444         pkg_t *pkg;
1445         FILE *stream;
1446 };
1447
1448 static void
1449 pkg_write_filelist_helper(const char *key, void *entry_, void *data_)
1450 {
1451         struct pkg_write_filelist_data *data = data_;
1452         pkg_t *entry = entry_;
1453         if (entry == data->pkg) {
1454                 fprintf(data->stream, "%s\n", key);
1455         }
1456 }
1457
1458 int pkg_write_filelist(pkg_t * pkg)
1459 {
1460         struct pkg_write_filelist_data data;
1461         char *list_file_name;
1462
1463         sprintf_alloc(&list_file_name, "%s/%s.list",
1464                       pkg->dest->info_dir, pkg->name);
1465
1466         opkg_msg(INFO, "Creating %s file for pkg %s.\n",
1467                  list_file_name, pkg->name);
1468
1469         data.stream = fopen(list_file_name, "w");
1470         if (!data.stream) {
1471                 opkg_perror(ERROR, "Failed to open %s", list_file_name);
1472                 free(list_file_name);
1473                 return -1;
1474         }
1475
1476         data.pkg = pkg;
1477         hash_table_foreach(&conf->file_hash, pkg_write_filelist_helper, &data);
1478         fclose(data.stream);
1479         free(list_file_name);
1480
1481         pkg->state_flag &= ~SF_FILELIST_CHANGED;
1482
1483         return 0;
1484 }
1485
1486 int pkg_write_changed_filelists(void)
1487 {
1488         pkg_vec_t *installed_pkgs = pkg_vec_alloc();
1489         int i, err, ret = 0;
1490
1491         if (conf->noaction)
1492                 return 0;
1493
1494         opkg_msg(INFO, "Saving changed filelists.\n");
1495
1496         pkg_hash_fetch_all_installed(installed_pkgs);
1497         for (i = 0; i < installed_pkgs->len; i++) {
1498                 pkg_t *pkg = installed_pkgs->pkgs[i];
1499                 if (pkg->state_flag & SF_FILELIST_CHANGED) {
1500                         err = pkg_write_filelist(pkg);
1501                         if (err)
1502                                 ret = -1;
1503                 }
1504         }
1505
1506         pkg_vec_free(installed_pkgs);
1507
1508         return ret;
1509 }