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