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                 if (ab)
 412                         free(ab);
 413         }
 414
 415         if (!pkg_get_ptr(oldpkg, PKG_CONFLICTS)) {
 416                 pkg_set_ptr(oldpkg, PKG_CONFLICTS, pkg_get_ptr(newpkg, PKG_CONFLICTS));
 417                 pkg_set_ptr(newpkg, PKG_CONFLICTS, NULL);
 418         }
 419
 420         if (!pkg_get_ptr(oldpkg, PKG_REPLACES)) {
 421                 pkg_set_ptr(oldpkg, PKG_REPLACES, pkg_get_ptr(newpkg, PKG_REPLACES));
 422                 pkg_set_ptr(newpkg, PKG_REPLACES, NULL);
 423         }
 424
 425         if (!pkg_get_string(oldpkg, PKG_FILENAME))
 426                 pkg_set_string(oldpkg, PKG_FILENAME, pkg_get_string(newpkg, PKG_FILENAME));
 427         if (!pkg_get_string(oldpkg, PKG_LOCAL_FILENAME))
 428                 pkg_set_string(oldpkg, PKG_LOCAL_FILENAME, pkg_get_string(newpkg, PKG_LOCAL_FILENAME));
 429         if (!pkg_get_string(oldpkg, PKG_TMP_UNPACK_DIR))
 430                 pkg_set_string(oldpkg, PKG_TMP_UNPACK_DIR, pkg_get_string(newpkg, PKG_TMP_UNPACK_DIR));
 431         if (!pkg_get_md5(oldpkg))
 432                 pkg_set_md5(oldpkg, pkg_get_md5(newpkg));
 433         if (!pkg_get_sha256(oldpkg))
 434                 pkg_set_sha256(oldpkg, pkg_get_sha256(newpkg));
 435         if (!pkg_get_int(oldpkg, PKG_SIZE))
 436                 pkg_set_int(oldpkg, PKG_SIZE, pkg_get_int(newpkg, PKG_SIZE));
 437         if (!pkg_get_int(oldpkg, PKG_INSTALLED_SIZE))
 438                 pkg_set_int(oldpkg, PKG_INSTALLED_SIZE, pkg_get_int(newpkg, PKG_INSTALLED_SIZE));
 439         if (!pkg_get_string(oldpkg, PKG_PRIORITY))
 440                 pkg_set_string(oldpkg, PKG_PRIORITY, pkg_get_string(newpkg, PKG_PRIORITY));
 441         if (!pkg_get_string(oldpkg, PKG_SOURCE))
 442                 pkg_set_string(oldpkg, PKG_SOURCE, pkg_get_string(newpkg, PKG_SOURCE));
 443
 444         if (!pkg_get_ptr(oldpkg, PKG_CONFFILES)) {
 445                 pkg_set_ptr(oldpkg, PKG_CONFFILES, pkg_get_ptr(newpkg, PKG_CONFFILES));
 446                 pkg_set_ptr(newpkg, PKG_CONFFILES, NULL);
 447         }
 448
 449         if (!oldpkg->installed_files) {
 450                 oldpkg->installed_files = newpkg->installed_files;
 451                 oldpkg->installed_files_ref_cnt =
 452                     newpkg->installed_files_ref_cnt;
 453                 newpkg->installed_files = NULL;
 454         }
 455
 456         if (!oldpkg->essential)
 457                 oldpkg->essential = newpkg->essential;
 458
 459         return 0;
 460 }
 461
 462 static void abstract_pkg_init(abstract_pkg_t * ab_pkg)
 463 {
 464         ab_pkg->provided_by = abstract_pkg_vec_alloc();
 465         ab_pkg->dependencies_checked = 0;
 466         ab_pkg->state_status = SS_NOT_INSTALLED;
 467 }
 468
 469 abstract_pkg_t *abstract_pkg_new(void)
 470 {
 471         abstract_pkg_t *ab_pkg;
 472
 473         ab_pkg = xcalloc(1, sizeof(abstract_pkg_t));
 474         abstract_pkg_init(ab_pkg);
 475
 476         return ab_pkg;
 477 }
 478
 479 void set_flags_from_control(pkg_t * pkg)
 480 {
 481         char *file_name;
 482         FILE *fp;
 483
 484         sprintf_alloc(&file_name, "%s/%s.control", pkg->dest->info_dir,
 485                       pkg->name);
 486
 487         fp = fopen(file_name, "r");
 488         if (fp == NULL) {
 489                 opkg_perror(ERROR, "Failed to open %s", file_name);
 490                 free(file_name);
 491                 return;
 492         }
 493
 494         free(file_name);
 495
 496         if (pkg_parse_from_stream(pkg, fp, PFM_ALL ^ PFM_ESSENTIAL)) {
 497                 opkg_msg(DEBUG,
 498                          "Unable to read control file for %s. May be empty.\n",
 499                          pkg->name);
 500         }
 501
 502         fclose(fp);
 503
 504         return;
 505 }
 506
 507 static const char *pkg_state_want_to_str(pkg_state_want_t sw)
 508 {
 509         int i;
 510
 511         for (i = 0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
 512                 if (pkg_state_want_map[i].value == sw) {
 513                         return pkg_state_want_map[i].str;
 514                 }
 515         }
 516
 517         opkg_msg(ERROR, "Internal error: state_want=%d\n", sw);
 518         return "<STATE_WANT_UNKNOWN>";
 519 }
 520
 521 pkg_state_want_t pkg_state_want_from_str(char *str)
 522 {
 523         int i;
 524
 525         for (i = 0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
 526                 if (strcmp(str, pkg_state_want_map[i].str) == 0) {
 527                         return pkg_state_want_map[i].value;
 528                 }
 529         }
 530
 531         opkg_msg(ERROR, "Internal error: state_want=%s\n", str);
 532         return SW_UNKNOWN;
 533 }
 534
 535 static char *pkg_state_flag_to_str(pkg_state_flag_t sf)
 536 {
 537         int i;
 538         unsigned int len;
 539         char *str;
 540
 541         /* clear the temporary flags before converting to string */
 542         sf &= SF_NONVOLATILE_FLAGS;
 543
 544         if (sf == 0)
 545                 return xstrdup("ok");
 546
 547         len = 0;
 548         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 549                 if (sf & pkg_state_flag_map[i].value)
 550                         len += strlen(pkg_state_flag_map[i].str) + 1;
 551         }
 552
 553         str = xmalloc(len + 1);
 554         str[0] = '\0';
 555
 556         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 557                 if (sf & pkg_state_flag_map[i].value) {
 558                         strncat(str, pkg_state_flag_map[i].str, len);
 559                         strncat(str, ",", len);
 560                 }
 561         }
 562
 563         len = strlen(str);
 564         str[len - 1] = '\0';    /* squash last comma */
 565
 566         return str;
 567 }
 568
 569 pkg_state_flag_t pkg_state_flag_from_str(const char *str)
 570 {
 571         int i;
 572         int sf = SF_OK;
 573         const char *sfname;
 574         unsigned int sfname_len;
 575
 576         if (strcmp(str, "ok") == 0) {
 577                 return SF_OK;
 578         }
 579         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 580                 sfname = pkg_state_flag_map[i].str;
 581                 sfname_len = strlen(sfname);
 582                 if (strncmp(str, sfname, sfname_len) == 0) {
 583                         sf |= pkg_state_flag_map[i].value;
 584                         str += sfname_len;
 585                         if (str[0] == ',') {
 586                                 str++;
 587                         } else {
 588                                 break;
 589                         }
 590                 }
 591         }
 592
 593         return sf;
 594 }
 595
 596 static const char *pkg_state_status_to_str(pkg_state_status_t ss)
 597 {
 598         int i;
 599
 600         for (i = 0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
 601                 if (pkg_state_status_map[i].value == ss) {
 602                         return pkg_state_status_map[i].str;
 603                 }
 604         }
 605
 606         opkg_msg(ERROR, "Internal error: state_status=%d\n", ss);
 607         return "<STATE_STATUS_UNKNOWN>";
 608 }
 609
 610 pkg_state_status_t pkg_state_status_from_str(const char *str)
 611 {
 612         int i;
 613
 614         for (i = 0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
 615                 if (strcmp(str, pkg_state_status_map[i].str) == 0) {
 616                         return pkg_state_status_map[i].value;
 617                 }
 618         }
 619
 620         opkg_msg(ERROR, "Internal error: state_status=%s\n", str);
 621         return SS_NOT_INSTALLED;
 622 }
 623
 624 void pkg_formatted_field(FILE * fp, pkg_t * pkg, const char *field)
 625 {
 626         int i, j;
 627         char *str;
 628         const char *p;
 629         compound_depend_t *dep;
 630         abstract_pkg_t **ab_pkg;
 631
 632         if (strlen(field) < PKG_MINIMUM_FIELD_NAME_LEN) {
 633                 goto UNKNOWN_FMT_FIELD;
 634         }
 635
 636         switch (field[0]) {
 637         case 'a':
 638         case 'A':
 639                 if (strcasecmp(field, "Architecture") == 0) {
 640                         p = pkg_get_architecture(pkg);
 641                         if (p) {
 642                                 fprintf(fp, "Architecture: %s\n",
 643                                         p);
 644                         }
 645                 } else if (strcasecmp(field, "Auto-Installed") == 0) {
 646                         if (pkg->auto_installed)
 647                                 fprintf(fp, "Auto-Installed: yes\n");
 648                 } else {
 649                         goto UNKNOWN_FMT_FIELD;
 650                 }
 651                 break;
 652         case 'c':
 653         case 'C':
 654                 if (strcasecmp(field, "Conffiles") == 0) {
 655                         conffile_list_t *cl;
 656                         conffile_list_elt_t *iter;
 657
 658                         cl = pkg_get_ptr(pkg, PKG_CONFFILES);
 659
 660                         if (!cl || nv_pair_list_empty(cl))
 661                                 return;
 662
 663                         fprintf(fp, "Conffiles:\n");
 664                         for (iter = nv_pair_list_first(cl); iter;
 665                              iter = nv_pair_list_next(cl, iter)) {
 666                                 if (((conffile_t *) iter->data)->name
 667                                     && ((conffile_t *) iter->data)->value) {
 668                                         fprintf(fp, " %s %s\n",
 669                                                 ((conffile_t *) iter->data)->
 670                                                 name,
 671                                                 ((conffile_t *) iter->data)->
 672                                                 value);
 673                                 }
 674                         }
 675                 } else if (strcasecmp(field, "Conflicts") == 0) {
 676                         struct depend *cdep;
 677                         compound_depend_t *deps, *dep;
 678                         deps = pkg_get_ptr(pkg, PKG_CONFLICTS);
 679                         if (deps) {
 680                                 fprintf(fp, "Conflicts:");
 681                                 for (i = 0, dep = deps; dep->type; dep++, i++) {
 682                                         cdep = dep->possibilities[0];
 683                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 684                                                 cdep->pkg->name);
 685                                         if (cdep->version) {
 686                                                 fprintf(fp, " (%s%s)",
 687                                                         constraint_to_str(cdep->
 688                                                                           constraint),
 689                                                         cdep->version);
 690                                         }
 691                                 }
 692                                 fprintf(fp, "\n");
 693                         }
 694                 } else {
 695                         goto UNKNOWN_FMT_FIELD;
 696                 }
 697                 break;
 698         case 'd':
 699         case 'D':
 700                 if (strcasecmp(field, "Depends") == 0) {
 701                         dep = pkg_get_depends(pkg, DEPEND);
 702                         if (dep) {
 703                                 fprintf(fp, "Depends:");
 704                                 for (i = 0, j = 0; dep && dep->type; i++, dep++) {
 705                                         if (dep->type != DEPEND)
 706                                                 continue;
 707                                         str = pkg_depend_str(pkg, i);
 708                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 709                                                 str);
 710                                         free(str);
 711                                         j++;
 712                                 }
 713                                 fprintf(fp, "\n");
 714                         }
 715                 } else if (strcasecmp(field, "Description") == 0) {
 716                         p = pkg_get_string(pkg, PKG_DESCRIPTION);
 717                         if (p) {
 718                                 fprintf(fp, "Description: %s\n",
 719                                         p);
 720                         }
 721                 } else {
 722                         goto UNKNOWN_FMT_FIELD;
 723                 }
 724                 break;
 725         case 'e':
 726         case 'E':
 727                 if (pkg->essential) {
 728                         fprintf(fp, "Essential: yes\n");
 729                 }
 730                 break;
 731         case 'f':
 732         case 'F':
 733                 p = pkg_get_string(pkg, PKG_FILENAME);
 734                 if (p) {
 735                         fprintf(fp, "Filename: %s\n", p);
 736                 }
 737                 break;
 738         case 'i':
 739         case 'I':
 740                 if (strcasecmp(field, "Installed-Size") == 0) {
 741                         fprintf(fp, "Installed-Size: %lu\n",
 742                                 (unsigned long) pkg_get_int(pkg, PKG_INSTALLED_SIZE));
 743                 } else if (strcasecmp(field, "Installed-Time") == 0) {
 744                         i = pkg_get_int(pkg, PKG_INSTALLED_TIME);
 745                         if (i) {
 746                                 fprintf(fp, "Installed-Time: %lu\n",
 747                                         (unsigned long) i);
 748                         }
 749                 }
 750                 break;
 751         case 'm':
 752         case 'M':
 753                 if (strcasecmp(field, "Maintainer") == 0) {
 754                         p = pkg_get_string(pkg, PKG_MAINTAINER);
 755                         if (p) {
 756                                 fprintf(fp, "Maintainer: %s\n", p);
 757                         }
 758                 } else if (strcasecmp(field, "MD5sum") == 0) {
 759                         p = pkg_get_md5(pkg);
 760                         if (p) {
 761                                 fprintf(fp, "MD5Sum: %s\n", p);
 762                         }
 763                 } else {
 764                         goto UNKNOWN_FMT_FIELD;
 765                 }
 766                 break;
 767         case 'p':
 768         case 'P':
 769                 if (strcasecmp(field, "Package") == 0) {
 770                         fprintf(fp, "Package: %s\n", pkg->name);
 771                 } else if (strcasecmp(field, "Priority") == 0) {
 772                         fprintf(fp, "Priority: %s\n", pkg_get_string(pkg, PKG_PRIORITY));
 773                 } else if (strcasecmp(field, "Provides") == 0) {
 774                         ab_pkg = pkg_get_ptr(pkg, PKG_PROVIDES);
 775                         if (ab_pkg && ab_pkg[0] && ab_pkg[1]) {
 776                                 fprintf(fp, "Provides:");
 777                                 for (i = 0, ab_pkg++; *ab_pkg; i++, ab_pkg++) {
 778                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 779                                                 (*ab_pkg)->name);
 780                                         ab_pkg++;
 781                                 }
 782                                 fprintf(fp, "\n");
 783                         }
 784                 } else {
 785                         goto UNKNOWN_FMT_FIELD;
 786                 }
 787                 break;
 788         case 'r':
 789         case 'R':
 790                 if (strcasecmp(field, "Replaces") == 0) {
 791                         ab_pkg = pkg_get_ptr(pkg, PKG_REPLACES);
 792                         if (ab_pkg && *ab_pkg) {
 793                                 fprintf(fp, "Replaces:");
 794                                 for (i = 0; *ab_pkg; i++, ab_pkg++) {
 795                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 796                                                 (*ab_pkg)->name);
 797                                 }
 798                                 fprintf(fp, "\n");
 799                         }
 800                 } else if (strcasecmp(field, "Recommends") == 0) {
 801                         dep = pkg_get_depends(pkg, RECOMMEND);
 802                         if (dep) {
 803                                 fprintf(fp, "Recommends:");
 804                                 for (j = 0, i = 0; dep && dep->type; i++, dep++) {
 805                                         if (dep->type != RECOMMEND)
 806                                                 continue;
 807                                         str = pkg_depend_str(pkg, i);
 808                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 809                                                 str);
 810                                         free(str);
 811                                         j++;
 812                                 }
 813                                 fprintf(fp, "\n");
 814                         }
 815                 } else {
 816                         goto UNKNOWN_FMT_FIELD;
 817                 }
 818                 break;
 819         case 's':
 820         case 'S':
 821                 if (strcasecmp(field, "Section") == 0) {
 822                         p = pkg_get_string(pkg, PKG_SECTION);
 823                         if (p) {
 824                                 fprintf(fp, "Section: %s\n", p);
 825                         }
 826 #if defined HAVE_SHA256
 827                 } else if (strcasecmp(field, "SHA256sum") == 0) {
 828                         p = pkg_get_string(pkg, PKG_SHA256SUM);
 829                         if (p) {
 830                                 fprintf(fp, "SHA256sum: %s\n", p);
 831                         }
 832 #endif
 833                 } else if (strcasecmp(field, "Size") == 0) {
 834                         i = pkg_get_int(pkg, PKG_SIZE);
 835                         if (i) {
 836                                 fprintf(fp, "Size: %lu\n", (unsigned long) i);
 837                         }
 838                 } else if (strcasecmp(field, "Source") == 0) {
 839                         p = pkg_get_string(pkg, PKG_SOURCE);
 840                         if (p) {
 841                                 fprintf(fp, "Source: %s\n", p);
 842                         }
 843                 } else if (strcasecmp(field, "Status") == 0) {
 844                         char *pflag = pkg_state_flag_to_str(pkg->state_flag);
 845                         fprintf(fp, "Status: %s %s %s\n",
 846                                 pkg_state_want_to_str(pkg->state_want),
 847                                 pflag,
 848                                 pkg_state_status_to_str(pkg->state_status));
 849                         free(pflag);
 850                 } else if (strcasecmp(field, "Suggests") == 0) {
 851                         dep = pkg_get_depends(pkg, SUGGEST);
 852                         if (dep) {
 853                                 fprintf(fp, "Suggests:");
 854                                 for (j = 0, i = 0; dep && dep->type; i++, dep++) {
 855                                         if (dep->type != SUGGEST)
 856                                                 continue;
 857                                         str = pkg_depend_str(pkg, i);
 858                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 859                                                 str);
 860                                         free(str);
 861                                         j++;
 862                                 }
 863                                 fprintf(fp, "\n");
 864                         }
 865                 } else {
 866                         goto UNKNOWN_FMT_FIELD;
 867                 }
 868                 break;
 869         case 't':
 870         case 'T':
 871                 if (strcasecmp(field, "Tags") == 0) {
 872                         p = pkg_get_string(pkg, PKG_TAGS);
 873                         if (p) {
 874                                 fprintf(fp, "Tags: %s\n", p);
 875                         }
 876                 }
 877                 break;
 878         case 'v':
 879         case 'V':
 880                 {
 881                         char *version = pkg_version_str_alloc(pkg);
 882                         if (version == NULL)
 883                                 return;
 884                         fprintf(fp, "Version: %s\n", version);
 885                         free(version);
 886                 }
 887                 break;
 888         default:
 889                 goto UNKNOWN_FMT_FIELD;
 890         }
 891
 892         return;
 893
 894 UNKNOWN_FMT_FIELD:
 895         opkg_msg(ERROR, "Internal error: field=%s\n", field);
 896 }
 897
 898 void pkg_formatted_info(FILE * fp, pkg_t * pkg)
 899 {
 900         pkg_formatted_field(fp, pkg, "Package");
 901         pkg_formatted_field(fp, pkg, "Version");
 902         pkg_formatted_field(fp, pkg, "Depends");
 903         pkg_formatted_field(fp, pkg, "Recommends");
 904         pkg_formatted_field(fp, pkg, "Suggests");
 905         pkg_formatted_field(fp, pkg, "Provides");
 906         pkg_formatted_field(fp, pkg, "Replaces");
 907         pkg_formatted_field(fp, pkg, "Conflicts");
 908         pkg_formatted_field(fp, pkg, "Status");
 909         pkg_formatted_field(fp, pkg, "Section");
 910         pkg_formatted_field(fp, pkg, "Essential");
 911         pkg_formatted_field(fp, pkg, "Architecture");
 912         pkg_formatted_field(fp, pkg, "Maintainer");
 913         pkg_formatted_field(fp, pkg, "MD5sum");
 914         pkg_formatted_field(fp, pkg, "Size");
 915         pkg_formatted_field(fp, pkg, "Filename");
 916         pkg_formatted_field(fp, pkg, "Conffiles");
 917         pkg_formatted_field(fp, pkg, "Source");
 918         pkg_formatted_field(fp, pkg, "Description");
 919         pkg_formatted_field(fp, pkg, "Installed-Time");
 920         pkg_formatted_field(fp, pkg, "Tags");
 921         fputs("\n", fp);
 922 }
 923
 924 void pkg_print_status(pkg_t * pkg, FILE * file)
 925 {
 926         if (pkg == NULL) {
 927                 return;
 928         }
 929
 930         pkg_formatted_field(file, pkg, "Package");
 931         pkg_formatted_field(file, pkg, "Version");
 932         pkg_formatted_field(file, pkg, "Depends");
 933         pkg_formatted_field(file, pkg, "Recommends");
 934         pkg_formatted_field(file, pkg, "Suggests");
 935         pkg_formatted_field(file, pkg, "Provides");
 936         pkg_formatted_field(file, pkg, "Replaces");
 937         pkg_formatted_field(file, pkg, "Conflicts");
 938         pkg_formatted_field(file, pkg, "Status");
 939         pkg_formatted_field(file, pkg, "Essential");
 940         pkg_formatted_field(file, pkg, "Architecture");
 941         pkg_formatted_field(file, pkg, "Conffiles");
 942         pkg_formatted_field(file, pkg, "Installed-Time");
 943         pkg_formatted_field(file, pkg, "Auto-Installed");
 944         fputs("\n", file);
 945 }
 946
 947 /*
 948  * libdpkg - Debian packaging suite library routines
 949  * vercmp.c - comparison of version numbers
 950  *
 951  * Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk>
 952  */
 953
 954 /* assume ascii; warning: evaluates x multiple times! */
 955 #define order(x) ((x) == '~' ? -1 \
 956                 : isdigit((x)) ? 0 \
 957                 : !(x) ? 0 \
 958                 : isalpha((x)) ? (x) \
 959                 : (x) + 256)
 960
 961 static int verrevcmp(const char *val, const char *ref)
 962 {
 963         if (!val)
 964                 val = "";
 965         if (!ref)
 966                 ref = "";
 967
 968         while (*val || *ref) {
 969                 int first_diff = 0;
 970
 971                 while ((*val && !isdigit(*val)) || (*ref && !isdigit(*ref))) {
 972                         int vc = order(*val), rc = order(*ref);
 973                         if (vc != rc)
 974                                 return vc - rc;
 975                         val++;
 976                         ref++;
 977                 }
 978
 979                 while (*val == '0')
 980                         val++;
 981                 while (*ref == '0')
 982                         ref++;
 983                 while (isdigit(*val) && isdigit(*ref)) {
 984                         if (!first_diff)
 985                                 first_diff = *val - *ref;
 986                         val++;
 987                         ref++;
 988                 }
 989                 if (isdigit(*val))
 990                         return 1;
 991                 if (isdigit(*ref))
 992                         return -1;
 993                 if (first_diff)
 994                         return first_diff;
 995         }
 996         return 0;
 997 }
 998
 999 int pkg_compare_versions(const pkg_t * pkg, const pkg_t * ref_pkg)
1000 {
1001         unsigned int epoch1 = (unsigned int) pkg_get_int(pkg, PKG_EPOCH);
1002         unsigned int epoch2 = (unsigned int) pkg_get_int(ref_pkg, PKG_EPOCH);
1003         char *revision1 = pkg_get_string(pkg, PKG_REVISION);
1004         char *revision2 = pkg_get_string(ref_pkg, PKG_REVISION);
1005         const char *version1 = pkg_get_string(pkg, PKG_VERSION);
1006         const char *version2 = pkg_get_string(ref_pkg, PKG_VERSION);
1007         int r;
1008
1009         if (epoch1 > epoch2) {
1010                 return 1;
1011         }
1012
1013         if (epoch1 < epoch2) {
1014                 return -1;
1015         }
1016
1017         r = verrevcmp(version1, version2);
1018         if (r) {
1019                 return r;
1020         }
1021
1022         r = verrevcmp(revision1, revision2);
1023         if (r) {
1024                 return r;
1025         }
1026
1027         return r;
1028 }
1029
1030 int pkg_version_satisfied(pkg_t * it, pkg_t * ref, const char *op)
1031 {
1032         int r;
1033
1034         r = pkg_compare_versions(it, ref);
1035
1036         if (strcmp(op, "<=") == 0 || strcmp(op, "<") == 0) {
1037                 return r <= 0;
1038         }
1039
1040         if (strcmp(op, ">=") == 0 || strcmp(op, ">") == 0) {
1041                 return r >= 0;
1042         }
1043
1044         if (strcmp(op, "<<") == 0) {
1045                 return r < 0;
1046         }
1047
1048         if (strcmp(op, ">>") == 0) {
1049                 return r > 0;
1050         }
1051
1052         if (strcmp(op, "=") == 0) {
1053                 return r == 0;
1054         }
1055
1056         opkg_msg(ERROR, "Unknown operator: %s.\n", op);
1057         return 0;
1058 }
1059
1060 int pkg_name_version_and_architecture_compare(const void *p1, const void *p2)
1061 {
1062         const pkg_t * a = *(const pkg_t **)p1;
1063         const pkg_t * b = *(const pkg_t **)p2;
1064         int namecmp;
1065         int vercmp;
1066         int arch_prio1, arch_prio2;
1067         if (!a->name || !b->name) {
1068                 opkg_msg(ERROR, "Internal error: a->name=%p, b->name=%p.\n",
1069                          a->name, b->name);
1070                 return 0;
1071         }
1072
1073         namecmp = strcmp(a->name, b->name);
1074         if (namecmp)
1075                 return namecmp;
1076         vercmp = pkg_compare_versions(a, b);
1077         if (vercmp)
1078                 return vercmp;
1079         arch_prio1 = pkg_get_arch_priority(a);
1080         arch_prio2 = pkg_get_arch_priority(b);
1081         if (!arch_prio1 || !arch_prio2) {
1082                 opkg_msg(ERROR,
1083                          "Internal error: a->arch_priority=%i b->arch_priority=%i.\n",
1084                          arch_prio1, arch_prio2);
1085                 return 0;
1086         }
1087         if (arch_prio1 > arch_prio2)
1088                 return 1;
1089         if (arch_prio1 < arch_prio2)
1090                 return -1;
1091         return 0;
1092 }
1093
1094 int abstract_pkg_name_compare(const void *p1, const void *p2)
1095 {
1096         const abstract_pkg_t *a = *(const abstract_pkg_t **)p1;
1097         const abstract_pkg_t *b = *(const abstract_pkg_t **)p2;
1098         if (!a->name || !b->name) {
1099                 opkg_msg(ERROR, "Internal error: a->name=%p b->name=%p.\n",
1100                          a->name, b->name);
1101                 return 0;
1102         }
1103         return strcmp(a->name, b->name);
1104 }
1105
1106 char *pkg_version_str_alloc(pkg_t * pkg)
1107 {
1108         const char *verstr;
1109         char *version, *revptr;
1110         unsigned int epoch = (unsigned int) pkg_get_int(pkg, PKG_EPOCH);
1111
1112         revptr = pkg_get_string(pkg, PKG_REVISION);
1113         verstr = pkg_get_string(pkg, PKG_VERSION);
1114
1115         if (epoch) {
1116                 if (revptr)
1117                         sprintf_alloc(&version, "%d:%s-%s",
1118                                       epoch, verstr, revptr);
1119                 else
1120                         sprintf_alloc(&version, "%d:%s",
1121                                       epoch, verstr);
1122         } else {
1123                 if (revptr)
1124                         sprintf_alloc(&version, "%s-%s",
1125                                       verstr, revptr);
1126                 else
1127                         version = xstrdup(verstr);
1128         }
1129
1130         return version;
1131 }
1132
1133 /*
1134  * XXX: this should be broken into two functions
1135  */
1136 str_list_t *pkg_get_installed_files(pkg_t * pkg)
1137 {
1138         int err, fd;
1139         char *list_file_name = NULL;
1140         FILE *list_file = NULL;
1141         char *line;
1142         char *installed_file_name;
1143         unsigned int rootdirlen = 0;
1144         int list_from_package;
1145         const char *local_filename;
1146
1147         pkg->installed_files_ref_cnt++;
1148
1149         if (pkg->installed_files) {
1150                 return pkg->installed_files;
1151         }
1152
1153         pkg->installed_files = str_list_alloc();
1154
1155         /*
1156          * For installed packages, look at the package.list file in the database.
1157          * For uninstalled packages, get the file list directly from the package.
1158          */
1159         if (pkg->state_status == SS_NOT_INSTALLED || pkg->dest == NULL)
1160                 list_from_package = 1;
1161         else
1162                 list_from_package = 0;
1163
1164         if (list_from_package) {
1165                 local_filename = pkg_get_string(pkg, PKG_LOCAL_FILENAME);
1166
1167                 if (!local_filename) {
1168                         return pkg->installed_files;
1169                 }
1170                 /* XXX: CLEANUP: Maybe rewrite this to avoid using a temporary
1171                    file. In other words, change deb_extract so that it can
1172                    simply return the file list as a char *[] rather than
1173                    insisting on writing it to a FILE * as it does now. */
1174                 sprintf_alloc(&list_file_name, "%s/%s.list.XXXXXX",
1175                               conf->tmp_dir, pkg->name);
1176                 fd = mkstemp(list_file_name);
1177                 if (fd == -1) {
1178                         opkg_perror(ERROR, "Failed to make temp file %s.",
1179                                     list_file_name);
1180                         free(list_file_name);
1181                         return pkg->installed_files;
1182                 }
1183                 list_file = fdopen(fd, "r+");
1184                 if (list_file == NULL) {
1185                         opkg_perror(ERROR, "Failed to fdopen temp file %s.",
1186                                     list_file_name);
1187                         close(fd);
1188                         unlink(list_file_name);
1189                         free(list_file_name);
1190                         return pkg->installed_files;
1191                 }
1192                 err = pkg_extract_data_file_names_to_stream(pkg, list_file);
1193                 if (err) {
1194                         opkg_msg(ERROR, "Error extracting file list from %s.\n",
1195                                  local_filename);
1196                         fclose(list_file);
1197                         unlink(list_file_name);
1198                         free(list_file_name);
1199                         str_list_deinit(pkg->installed_files);
1200                         pkg->installed_files = NULL;
1201                         return NULL;
1202                 }
1203                 rewind(list_file);
1204         } else {
1205                 sprintf_alloc(&list_file_name, "%s/%s.list",
1206                               pkg->dest->info_dir, pkg->name);
1207                 list_file = fopen(list_file_name, "r");
1208                 if (list_file == NULL) {
1209                         opkg_perror(ERROR, "Failed to open %s", list_file_name);
1210                         free(list_file_name);
1211                         return pkg->installed_files;
1212                 }
1213                 free(list_file_name);
1214         }
1215
1216         if (conf->offline_root)
1217                 rootdirlen = strlen(conf->offline_root);
1218
1219         while (1) {
1220                 char *file_name;
1221
1222                 line = file_read_line_alloc(list_file);
1223                 if (line == NULL) {
1224                         break;
1225                 }
1226                 file_name = line;
1227
1228                 if (list_from_package) {
1229                         if (*file_name == '.') {
1230                                 file_name++;
1231                         }
1232                         if (*file_name == '/') {
1233                                 file_name++;
1234                         }
1235                         sprintf_alloc(&installed_file_name, "%s%s",
1236                                       pkg->dest->root_dir, file_name);
1237                 } else {
1238                         if (conf->offline_root &&
1239                             strncmp(conf->offline_root, file_name,
1240                                     rootdirlen)) {
1241                                 sprintf_alloc(&installed_file_name, "%s%s",
1242                                               conf->offline_root, file_name);
1243                         } else {
1244                                 // already contains root_dir as header -> ABSOLUTE
1245                                 sprintf_alloc(&installed_file_name, "%s",
1246                                               file_name);
1247                         }
1248                 }
1249                 str_list_append(pkg->installed_files, installed_file_name);
1250                 free(installed_file_name);
1251                 free(line);
1252         }
1253
1254         fclose(list_file);
1255
1256         if (list_from_package) {
1257                 unlink(list_file_name);
1258                 free(list_file_name);
1259         }
1260
1261         return pkg->installed_files;
1262 }
1263
1264 /* XXX: CLEANUP: This function and it's counterpart,
1265    (pkg_get_installed_files), do not match our init/deinit naming
1266    convention. Nor the alloc/free convention. But, then again, neither
1267    of these conventions currrently fit the way these two functions
1268    work. */
1269 void pkg_free_installed_files(pkg_t * pkg)
1270 {
1271         pkg->installed_files_ref_cnt--;
1272
1273         if (pkg->installed_files_ref_cnt > 0)
1274                 return;
1275
1276         if (pkg->installed_files) {
1277                 str_list_purge(pkg->installed_files);
1278         }
1279
1280         pkg->installed_files = NULL;
1281 }
1282
1283 void pkg_remove_installed_files_list(pkg_t * pkg)
1284 {
1285         char *list_file_name;
1286
1287         sprintf_alloc(&list_file_name, "%s/%s.list",
1288                       pkg->dest->info_dir, pkg->name);
1289
1290         if (!conf->noaction)
1291                 (void)unlink(list_file_name);
1292
1293         free(list_file_name);
1294 }
1295
1296 conffile_t *pkg_get_conffile(pkg_t * pkg, const char *file_name)
1297 {
1298         conffile_list_elt_t *iter;
1299         conffile_list_t *cl;
1300         conffile_t *conffile;
1301
1302         if (pkg == NULL) {
1303                 return NULL;
1304         }
1305
1306         cl = pkg_get_ptr(pkg, PKG_CONFFILES);
1307
1308         for (iter = cl ? nv_pair_list_first(cl) : NULL; iter;
1309              iter = nv_pair_list_next(cl, iter)) {
1310                 conffile = (conffile_t *) iter->data;
1311
1312                 if (strcmp(conffile->name, file_name) == 0) {
1313                         return conffile;
1314                 }
1315         }
1316
1317         return NULL;
1318 }
1319
1320 int pkg_run_script(pkg_t * pkg, const char *script, const char *args)
1321 {
1322         int err;
1323         char *path;
1324         char *cmd;
1325         char *tmp_unpack_dir;
1326
1327         if (conf->noaction)
1328                 return 0;
1329
1330         /* XXX: FEATURE: When conf->offline_root is set, we should run the
1331            maintainer script within a chroot environment. */
1332         if (conf->offline_root && !conf->force_postinstall) {
1333                 opkg_msg(INFO, "Offline root mode: not running %s.%s.\n",
1334                          pkg->name, script);
1335                 return 0;
1336         }
1337
1338         /* Installed packages have scripts in pkg->dest->info_dir, uninstalled packages
1339            have scripts in tmp_unpack_dir. */
1340         if (pkg->state_status == SS_INSTALLED
1341             || pkg->state_status == SS_UNPACKED) {
1342                 if (pkg->dest == NULL) {
1343                         opkg_msg(ERROR, "Internal error: %s has a NULL dest.\n",
1344                                  pkg->name);
1345                         return -1;
1346                 }
1347                 sprintf_alloc(&path, "%s/%s.%s", pkg->dest->info_dir, pkg->name,
1348                               script);
1349         } else {
1350                 tmp_unpack_dir = pkg_get_string(pkg, PKG_TMP_UNPACK_DIR);
1351                 if (tmp_unpack_dir == NULL) {
1352                         opkg_msg(ERROR,
1353                                  "Internal error: %s has a NULL tmp_unpack_dir.\n",
1354                                  pkg->name);
1355                         return -1;
1356                 }
1357                 sprintf_alloc(&path, "%s/%s", tmp_unpack_dir, script);
1358         }
1359
1360         opkg_msg(INFO, "Running script %s.\n", path);
1361
1362         setenv("PKG_ROOT",
1363                pkg->dest ? pkg->dest->root_dir : conf->default_dest->root_dir,
1364                1);
1365
1366         if (pkg->is_upgrade)
1367                 setenv("PKG_UPGRADE", "1", 1);
1368         else
1369                 setenv("PKG_UPGRADE", "0", 1);
1370
1371         if (!file_exists(path)) {
1372                 free(path);
1373                 return 0;
1374         }
1375
1376         sprintf_alloc(&cmd, "%s %s", path, args);
1377         free(path);
1378         {
1379                 const char *argv[] = { "sh", "-c", cmd, NULL };
1380                 err = xsystem(argv);
1381         }
1382         free(cmd);
1383
1384         if (err) {
1385                 opkg_msg(ERROR,
1386                          "package \"%s\" %s script returned status %d.\n",
1387                          pkg->name, script, err);
1388                 return err;
1389         }
1390
1391         return 0;
1392 }
1393
1394 int pkg_arch_supported(pkg_t * pkg)
1395 {
1396         nv_pair_list_elt_t *l;
1397         char *architecture = pkg_get_architecture(pkg);
1398
1399         if (!architecture)
1400                 return 1;
1401
1402         list_for_each_entry(l, &conf->arch_list.head, node) {
1403                 nv_pair_t *nv = (nv_pair_t *) l->data;
1404                 if (strcmp(nv->name, architecture) == 0) {
1405                         opkg_msg(DEBUG,
1406                                  "Arch %s (priority %s) supported for pkg %s.\n",
1407                                  nv->name, nv->value, pkg->name);
1408                         return 1;
1409                 }
1410         }
1411
1412         opkg_msg(DEBUG, "Arch %s unsupported for pkg %s.\n",
1413                  architecture, pkg->name);
1414         return 0;
1415 }
1416
1417 void pkg_info_preinstall_check(void)
1418 {
1419         int i;
1420         pkg_vec_t *installed_pkgs = pkg_vec_alloc();
1421
1422         /* update the file owner data structure */
1423         opkg_msg(INFO, "Updating file owner list.\n");
1424         pkg_hash_fetch_all_installed(installed_pkgs);
1425         for (i = 0; i < installed_pkgs->len; i++) {
1426                 pkg_t *pkg = installed_pkgs->pkgs[i];
1427                 str_list_t *installed_files = pkg_get_installed_files(pkg);     /* this causes installed_files to be cached */
1428                 str_list_elt_t *iter, *niter;
1429                 if (installed_files == NULL) {
1430                         opkg_msg(ERROR, "Failed to determine installed "
1431                                  "files for pkg %s.\n", pkg->name);
1432                         break;
1433                 }
1434                 for (iter = str_list_first(installed_files), niter =
1435                      str_list_next(installed_files, iter); iter;
1436                      iter = niter, niter =
1437                      str_list_next(installed_files, iter)) {
1438                         char *installed_file = (char *)iter->data;
1439                         file_hash_set_file_owner(installed_file, pkg);
1440                 }
1441                 pkg_free_installed_files(pkg);
1442         }
1443         pkg_vec_free(installed_pkgs);
1444 }
1445
1446 struct pkg_write_filelist_data {
1447         pkg_t *pkg;
1448         FILE *stream;
1449 };
1450
1451 static void
1452 pkg_write_filelist_helper(const char *key, void *entry_, void *data_)
1453 {
1454         struct pkg_write_filelist_data *data = data_;
1455         pkg_t *entry = entry_;
1456         if (entry == data->pkg) {
1457                 fprintf(data->stream, "%s\n", key);
1458         }
1459 }
1460
1461 int pkg_write_filelist(pkg_t * pkg)
1462 {
1463         struct pkg_write_filelist_data data;
1464         char *list_file_name;
1465
1466         sprintf_alloc(&list_file_name, "%s/%s.list",
1467                       pkg->dest->info_dir, pkg->name);
1468
1469         opkg_msg(INFO, "Creating %s file for pkg %s.\n",
1470                  list_file_name, pkg->name);
1471
1472         data.stream = fopen(list_file_name, "w");
1473         if (!data.stream) {
1474                 opkg_perror(ERROR, "Failed to open %s", list_file_name);
1475                 free(list_file_name);
1476                 return -1;
1477         }
1478
1479         data.pkg = pkg;
1480         hash_table_foreach(&conf->file_hash, pkg_write_filelist_helper, &data);
1481         fclose(data.stream);
1482         free(list_file_name);
1483
1484         pkg->state_flag &= ~SF_FILELIST_CHANGED;
1485
1486         return 0;
1487 }
1488
1489 int pkg_write_changed_filelists(void)
1490 {
1491         pkg_vec_t *installed_pkgs = pkg_vec_alloc();
1492         int i, err, ret = 0;
1493
1494         if (conf->noaction)
1495                 return 0;
1496
1497         opkg_msg(INFO, "Saving changed filelists.\n");
1498
1499         pkg_hash_fetch_all_installed(installed_pkgs);
1500         for (i = 0; i < installed_pkgs->len; i++) {
1501                 pkg_t *pkg = installed_pkgs->pkgs[i];
1502                 if (pkg->state_flag & SF_FILELIST_CHANGED) {
1503                         err = pkg_write_filelist(pkg);
1504                         if (err)
1505                                 ret = -1;
1506                 }
1507         }
1508
1509         pkg_vec_free(installed_pkgs);
1510
1511         return ret;
1512 }