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