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 <stdio.h>
  19 #include <string.h>
  20 #include <ctype.h>
  21 #include <unistd.h>
  22 #include <libgen.h>
  23
  24 #include "pkg.h"
  25
  26 #include "pkg_parse.h"
  27 #include "pkg_extract.h"
  28 #include "opkg_message.h"
  29 #include "opkg_utils.h"
  30
  31 #include "libbb/libbb.h"
  32 #include "sprintf_alloc.h"
  33 #include "file_util.h"
  34 #include "xsystem.h"
  35 #include "opkg_conf.h"
  36
  37 typedef struct enum_map enum_map_t;
  38 struct enum_map {
  39         unsigned int value;
  40         const char *str;
  41 };
  42
  43 static const enum_map_t pkg_state_want_map[] = {
  44         {SW_UNKNOWN, "unknown"},
  45         {SW_INSTALL, "install"},
  46         {SW_DEINSTALL, "deinstall"},
  47         {SW_PURGE, "purge"}
  48 };
  49
  50 static const enum_map_t pkg_state_flag_map[] = {
  51         {SF_OK, "ok"},
  52         {SF_REINSTREQ, "reinstreq"},
  53         {SF_HOLD, "hold"},
  54         {SF_REPLACE, "replace"},
  55         {SF_NOPRUNE, "noprune"},
  56         {SF_PREFER, "prefer"},
  57         {SF_OBSOLETE, "obsolete"},
  58         {SF_USER, "user"},
  59 };
  60
  61 static const enum_map_t pkg_state_status_map[] = {
  62         {SS_NOT_INSTALLED, "not-installed"},
  63         {SS_UNPACKED, "unpacked"},
  64         {SS_HALF_CONFIGURED, "half-configured"},
  65         {SS_INSTALLED, "installed"},
  66         {SS_HALF_INSTALLED, "half-installed"},
  67         {SS_CONFIG_FILES, "config-files"},
  68         {SS_POST_INST_FAILED, "post-inst-failed"},
  69         {SS_REMOVAL_FAILED, "removal-failed"}
  70 };
  71
  72 static void pkg_init(pkg_t * pkg)
  73 {
  74         pkg->name = NULL;
  75         pkg->dest = NULL;
  76         pkg->src = NULL;
  77         pkg->state_want = SW_UNKNOWN;
  78         pkg->state_flag = SF_OK;
  79         pkg->state_status = SS_NOT_INSTALLED;
  80
  81         pkg->installed_files = NULL;
  82         pkg->installed_files_ref_cnt = 0;
  83         pkg->essential = 0;
  84         pkg->provided_by_hand = 0;
  85
  86         pkg->arch_index = 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 char *pkg_get_architecture(const pkg_t *pkg)
 161 {
 162         nv_pair_list_elt_t *l;
 163         int n = 1;
 164
 165         list_for_each_entry(l, &conf->arch_list.head, node) {
 166                 nv_pair_t *nv = (nv_pair_t *) l->data;
 167                 if (n++ == pkg->arch_index)
 168                         return nv->name;
 169         }
 170
 171         return NULL;
 172 }
 173
 174 char *pkg_set_architecture(pkg_t *pkg, const char *architecture, ssize_t len)
 175 {
 176         nv_pair_list_elt_t *l;
 177         int n = 1;
 178
 179         list_for_each_entry(l, &conf->arch_list.head, node) {
 180                 nv_pair_t *nv = (nv_pair_t *) l->data;
 181
 182                 if (!strncmp(nv->name, architecture, len) && nv->name[len] == '\0') {
 183                         if (n >= 8) {
 184                                 opkg_msg(ERROR, "Internal error: too many different architectures\n");
 185                                 break;
 186                         }
 187
 188                         pkg->arch_index = n;
 189                         return nv->name;
 190                 }
 191
 192                 n++;
 193         }
 194
 195         pkg->arch_index = 0;
 196         return NULL;
 197 }
 198
 199 int pkg_get_arch_priority(const pkg_t *pkg)
 200 {
 201         nv_pair_list_elt_t *l;
 202         int n = 1;
 203
 204         list_for_each_entry(l, &conf->arch_list.head, node) {
 205                 nv_pair_t *nv = (nv_pair_t *) l->data;
 206                 if (n++ == pkg->arch_index)
 207                         return strtol(nv->value, NULL, 0);
 208         }
 209
 210         return 0;
 211 }
 212
 213 char *pkg_get_md5(const pkg_t *pkg)
 214 {
 215         char *p = pkg_get_raw(pkg, PKG_MD5SUM);
 216
 217         if (!p)
 218                 return NULL;
 219
 220         return checksum_bin2hex(p, 16);
 221 }
 222
 223 char *pkg_set_md5(pkg_t *pkg, const char *cksum)
 224 {
 225         size_t len;
 226         char *p = checksum_hex2bin(cksum, &len);
 227
 228         if (!p || len != 16)
 229                 return NULL;
 230
 231         return pkg_set_raw(pkg, PKG_MD5SUM, p, len);
 232 }
 233
 234 char *pkg_get_sha256(const pkg_t *pkg)
 235 {
 236         char *p = pkg_get_raw(pkg, PKG_SHA256SUM);
 237
 238         if (!p)
 239                 return NULL;
 240
 241         return checksum_bin2hex(p, 32);
 242 }
 243
 244 char *pkg_set_sha256(pkg_t *pkg, const char *cksum)
 245 {
 246         size_t len;
 247         char *p = checksum_hex2bin(cksum, &len);
 248
 249         if (!p || len != 32)
 250                 return NULL;
 251
 252         return pkg_set_raw(pkg, PKG_SHA256SUM, p, len);
 253 }
 254
 255
 256 static void compound_depend_deinit(compound_depend_t * depends)
 257 {
 258         int i;
 259         for (i = 0; i < depends->possibility_count; i++) {
 260                 depend_t *d;
 261                 d = depends->possibilities[i];
 262                 free(d->version);
 263                 free(d);
 264         }
 265         free(depends->possibilities);
 266 }
 267
 268 void pkg_deinit(pkg_t * pkg)
 269 {
 270         int rem;
 271         struct blob_attr *cur;
 272         compound_depend_t *deps, *dep;
 273         void *ptr;
 274
 275         if (pkg->name)
 276                 free(pkg->name);
 277         pkg->name = NULL;
 278
 279         /* owned by opkg_conf_t */
 280         pkg->dest = NULL;
 281         /* owned by opkg_conf_t */
 282         pkg->src = NULL;
 283
 284         pkg->state_want = SW_UNKNOWN;
 285         pkg->state_flag = SF_OK;
 286         pkg->state_status = SS_NOT_INSTALLED;
 287
 288         blob_for_each_attr(cur, pkg->blob.head, rem) {
 289                 switch (blob_id(cur)) {
 290                 case PKG_DEPENDS:
 291                 case PKG_CONFLICTS:
 292                         deps = pkg_get_ptr(pkg, blob_id(cur));
 293
 294                         if (deps) {
 295                                 for (dep = deps; dep->type; dep++)
 296                                         compound_depend_deinit(dep);
 297
 298                                 free(deps);
 299                         }
 300
 301                         pkg_set_ptr(pkg, blob_id(cur), NULL);
 302                         break;
 303
 304                 case PKG_REPLACES:
 305                 case PKG_PROVIDES:
 306                         ptr = pkg_get_ptr(pkg, blob_id(cur));
 307
 308                         if (ptr)
 309                                 free(ptr);
 310
 311                         pkg_set_ptr(pkg, blob_id(cur), NULL);
 312                         break;
 313
 314                 case PKG_CONFFILES:
 315                         ptr = pkg_get_ptr(pkg, blob_id(cur));
 316
 317                         if (ptr) {
 318                                 conffile_list_deinit(ptr);
 319                                 free(ptr);
 320                         }
 321
 322                         pkg_set_ptr(pkg, blob_id(cur), NULL);
 323                         break;
 324                 }
 325         }
 326
 327         //conffile_list_deinit(&pkg->conffiles);
 328
 329         /* XXX: QUESTION: Is forcing this to 1 correct? I suppose so,
 330            since if they are calling deinit, they should know. Maybe do an
 331            assertion here instead? */
 332         pkg->installed_files_ref_cnt = 1;
 333         pkg_free_installed_files(pkg);
 334         pkg->essential = 0;
 335
 336         blob_buf_free(&pkg->blob);
 337 }
 338
 339 int pkg_init_from_file(pkg_t * pkg, const char *filename)
 340 {
 341         int fd, err = 0;
 342         FILE *control_file;
 343         char *control_path, *tmp;
 344
 345         pkg_init(pkg);
 346
 347         if (!(pkg->state_flag & SF_NEED_DETAIL)) {
 348                 opkg_msg(DEBUG, "applying abpkg flag to %s\n", filename);
 349                 pkg->state_flag |= SF_NEED_DETAIL;
 350         }
 351
 352         pkg_set_string(pkg, PKG_LOCAL_FILENAME, filename);
 353
 354         tmp = xstrdup(filename);
 355         sprintf_alloc(&control_path, "%s/%s.control.XXXXXX",
 356                       conf->tmp_dir, basename(tmp));
 357         free(tmp);
 358         fd = mkstemp(control_path);
 359         if (fd == -1) {
 360                 opkg_perror(ERROR, "Failed to make temp file %s", control_path);
 361                 err = -1;
 362                 goto err0;
 363         }
 364
 365         control_file = fdopen(fd, "r+");
 366         if (control_file == NULL) {
 367                 opkg_perror(ERROR, "Failed to fdopen %s", control_path);
 368                 close(fd);
 369                 err = -1;
 370                 goto err1;
 371         }
 372
 373         err = pkg_extract_control_file_to_stream(pkg, control_file);
 374         if (err) {
 375                 opkg_msg(ERROR, "Failed to extract control file from %s.\n",
 376                          filename);
 377                 goto err2;
 378         }
 379
 380         rewind(control_file);
 381
 382         if ((err = pkg_parse_from_stream(pkg, control_file, 0))) {
 383                 if (err == 1) {
 384                         opkg_msg(ERROR, "Malformed package file %s.\n",
 385                                  filename);
 386                 }
 387                 err = -1;
 388         }
 389
 390 err2:
 391         fclose(control_file);
 392 err1:
 393         unlink(control_path);
 394 err0:
 395         free(control_path);
 396
 397         return err;
 398 }
 399
 400 /* Merge any new information in newpkg into oldpkg */
 401 int pkg_merge(pkg_t * oldpkg, pkg_t * newpkg)
 402 {
 403         abstract_pkg_t **ab;
 404
 405         if (oldpkg == newpkg) {
 406                 return 0;
 407         }
 408
 409         if (!oldpkg->auto_installed)
 410                 oldpkg->auto_installed = newpkg->auto_installed;
 411
 412         if (!oldpkg->src)
 413                 oldpkg->src = newpkg->src;
 414         if (!oldpkg->dest)
 415                 oldpkg->dest = newpkg->dest;
 416         if (!oldpkg->arch_index)
 417                 oldpkg->arch_index = newpkg->arch_index;
 418         if (!pkg_get_string(oldpkg, PKG_SECTION))
 419                 pkg_set_string(oldpkg, PKG_SECTION, pkg_get_string(newpkg, PKG_SECTION));
 420         if (!pkg_get_string(oldpkg, PKG_MAINTAINER))
 421                 pkg_set_string(oldpkg, PKG_MAINTAINER, pkg_get_string(newpkg, PKG_MAINTAINER));
 422         if (!pkg_get_string(oldpkg, PKG_DESCRIPTION))
 423                 pkg_set_string(oldpkg, PKG_DESCRIPTION, pkg_get_string(newpkg, PKG_DESCRIPTION));
 424
 425         if (!pkg_get_ptr(oldpkg, PKG_DEPENDS)) {
 426                 pkg_set_ptr(oldpkg, PKG_DEPENDS, pkg_get_ptr(newpkg, PKG_DEPENDS));
 427                 pkg_set_ptr(newpkg, PKG_DEPENDS, NULL);
 428         }
 429
 430         ab = pkg_get_ptr(oldpkg, PKG_PROVIDES);
 431
 432         if (!ab || !ab[0] || !ab[1]) {
 433                 pkg_set_ptr(oldpkg, PKG_PROVIDES, pkg_get_ptr(newpkg, PKG_PROVIDES));
 434                 pkg_set_ptr(newpkg, PKG_PROVIDES, NULL);
 435
 436                 if (ab)
 437                         free(ab);
 438         }
 439
 440         if (!pkg_get_ptr(oldpkg, PKG_CONFLICTS)) {
 441                 pkg_set_ptr(oldpkg, PKG_CONFLICTS, pkg_get_ptr(newpkg, PKG_CONFLICTS));
 442                 pkg_set_ptr(newpkg, PKG_CONFLICTS, NULL);
 443         }
 444
 445         if (!pkg_get_ptr(oldpkg, PKG_REPLACES)) {
 446                 pkg_set_ptr(oldpkg, PKG_REPLACES, pkg_get_ptr(newpkg, PKG_REPLACES));
 447                 pkg_set_ptr(newpkg, PKG_REPLACES, NULL);
 448         }
 449
 450         if (!pkg_get_string(oldpkg, PKG_FILENAME))
 451                 pkg_set_string(oldpkg, PKG_FILENAME, pkg_get_string(newpkg, PKG_FILENAME));
 452         if (!pkg_get_string(oldpkg, PKG_LOCAL_FILENAME))
 453                 pkg_set_string(oldpkg, PKG_LOCAL_FILENAME, pkg_get_string(newpkg, PKG_LOCAL_FILENAME));
 454         if (!pkg_get_string(oldpkg, PKG_TMP_UNPACK_DIR))
 455                 pkg_set_string(oldpkg, PKG_TMP_UNPACK_DIR, pkg_get_string(newpkg, PKG_TMP_UNPACK_DIR));
 456         if (!pkg_get_md5(oldpkg))
 457                 pkg_set_md5(oldpkg, pkg_get_md5(newpkg));
 458         if (!pkg_get_sha256(oldpkg))
 459                 pkg_set_sha256(oldpkg, pkg_get_sha256(newpkg));
 460         if (!pkg_get_int(oldpkg, PKG_SIZE))
 461                 pkg_set_int(oldpkg, PKG_SIZE, pkg_get_int(newpkg, PKG_SIZE));
 462         if (!pkg_get_int(oldpkg, PKG_INSTALLED_SIZE))
 463                 pkg_set_int(oldpkg, PKG_INSTALLED_SIZE, pkg_get_int(newpkg, PKG_INSTALLED_SIZE));
 464         if (!pkg_get_string(oldpkg, PKG_PRIORITY))
 465                 pkg_set_string(oldpkg, PKG_PRIORITY, pkg_get_string(newpkg, PKG_PRIORITY));
 466         if (!pkg_get_string(oldpkg, PKG_SOURCE))
 467                 pkg_set_string(oldpkg, PKG_SOURCE, pkg_get_string(newpkg, PKG_SOURCE));
 468
 469         if (!pkg_get_ptr(oldpkg, PKG_CONFFILES)) {
 470                 pkg_set_ptr(oldpkg, PKG_CONFFILES, pkg_get_ptr(newpkg, PKG_CONFFILES));
 471                 pkg_set_ptr(newpkg, PKG_CONFFILES, NULL);
 472         }
 473
 474         if (!oldpkg->installed_files) {
 475                 oldpkg->installed_files = newpkg->installed_files;
 476                 oldpkg->installed_files_ref_cnt =
 477                     newpkg->installed_files_ref_cnt;
 478                 newpkg->installed_files = NULL;
 479         }
 480
 481         if (!oldpkg->essential)
 482                 oldpkg->essential = newpkg->essential;
 483
 484         return 0;
 485 }
 486
 487 static void abstract_pkg_init(abstract_pkg_t * ab_pkg)
 488 {
 489         ab_pkg->provided_by = abstract_pkg_vec_alloc();
 490         ab_pkg->dependencies_checked = 0;
 491         ab_pkg->state_status = SS_NOT_INSTALLED;
 492 }
 493
 494 abstract_pkg_t *abstract_pkg_new(void)
 495 {
 496         abstract_pkg_t *ab_pkg;
 497
 498         ab_pkg = xcalloc(1, sizeof(abstract_pkg_t));
 499         abstract_pkg_init(ab_pkg);
 500
 501         return ab_pkg;
 502 }
 503
 504 void set_flags_from_control(pkg_t * pkg)
 505 {
 506         char *file_name;
 507         FILE *fp;
 508
 509         sprintf_alloc(&file_name, "%s/%s.control", pkg->dest->info_dir,
 510                       pkg->name);
 511
 512         fp = fopen(file_name, "r");
 513         if (fp == NULL) {
 514                 opkg_perror(ERROR, "Failed to open %s", file_name);
 515                 free(file_name);
 516                 return;
 517         }
 518
 519         free(file_name);
 520
 521         if (pkg_parse_from_stream(pkg, fp, PFM_ALL ^ PFM_ESSENTIAL)) {
 522                 opkg_msg(DEBUG,
 523                          "Unable to read control file for %s. May be empty.\n",
 524                          pkg->name);
 525         }
 526
 527         fclose(fp);
 528
 529         return;
 530 }
 531
 532 static const char *pkg_state_want_to_str(pkg_state_want_t sw)
 533 {
 534         int i;
 535
 536         for (i = 0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
 537                 if (pkg_state_want_map[i].value == sw) {
 538                         return pkg_state_want_map[i].str;
 539                 }
 540         }
 541
 542         opkg_msg(ERROR, "Internal error: state_want=%d\n", sw);
 543         return "<STATE_WANT_UNKNOWN>";
 544 }
 545
 546 pkg_state_want_t pkg_state_want_from_str(char *str)
 547 {
 548         int i;
 549
 550         for (i = 0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
 551                 if (strcmp(str, pkg_state_want_map[i].str) == 0) {
 552                         return pkg_state_want_map[i].value;
 553                 }
 554         }
 555
 556         opkg_msg(ERROR, "Internal error: state_want=%s\n", str);
 557         return SW_UNKNOWN;
 558 }
 559
 560 static char *pkg_state_flag_to_str(pkg_state_flag_t sf)
 561 {
 562         int i;
 563         unsigned int len;
 564         char *str;
 565
 566         /* clear the temporary flags before converting to string */
 567         sf &= SF_NONVOLATILE_FLAGS;
 568
 569         if (sf == 0)
 570                 return xstrdup("ok");
 571
 572         len = 0;
 573         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 574                 if (sf & pkg_state_flag_map[i].value)
 575                         len += strlen(pkg_state_flag_map[i].str) + 1;
 576         }
 577
 578         str = xmalloc(len + 1);
 579         str[0] = '\0';
 580
 581         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 582                 if (sf & pkg_state_flag_map[i].value) {
 583                         strncat(str, pkg_state_flag_map[i].str, len);
 584                         strncat(str, ",", len);
 585                 }
 586         }
 587
 588         len = strlen(str);
 589         str[len - 1] = '\0';    /* squash last comma */
 590
 591         return str;
 592 }
 593
 594 pkg_state_flag_t pkg_state_flag_from_str(const char *str)
 595 {
 596         int i;
 597         int sf = SF_OK;
 598         const char *sfname;
 599         unsigned int sfname_len;
 600
 601         if (strcmp(str, "ok") == 0) {
 602                 return SF_OK;
 603         }
 604         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 605                 sfname = pkg_state_flag_map[i].str;
 606                 sfname_len = strlen(sfname);
 607                 if (strncmp(str, sfname, sfname_len) == 0) {
 608                         sf |= pkg_state_flag_map[i].value;
 609                         str += sfname_len;
 610                         if (str[0] == ',') {
 611                                 str++;
 612                         } else {
 613                                 break;
 614                         }
 615                 }
 616         }
 617
 618         return sf;
 619 }
 620
 621 static const char *pkg_state_status_to_str(pkg_state_status_t ss)
 622 {
 623         int i;
 624
 625         for (i = 0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
 626                 if (pkg_state_status_map[i].value == ss) {
 627                         return pkg_state_status_map[i].str;
 628                 }
 629         }
 630
 631         opkg_msg(ERROR, "Internal error: state_status=%d\n", ss);
 632         return "<STATE_STATUS_UNKNOWN>";
 633 }
 634
 635 pkg_state_status_t pkg_state_status_from_str(const char *str)
 636 {
 637         int i;
 638
 639         for (i = 0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
 640                 if (strcmp(str, pkg_state_status_map[i].str) == 0) {
 641                         return pkg_state_status_map[i].value;
 642                 }
 643         }
 644
 645         opkg_msg(ERROR, "Internal error: state_status=%s\n", str);
 646         return SS_NOT_INSTALLED;
 647 }
 648
 649 void pkg_formatted_field(FILE * fp, pkg_t * pkg, const char *field)
 650 {
 651         int i, j;
 652         char *str;
 653         const char *p;
 654         compound_depend_t *dep;
 655         abstract_pkg_t **ab_pkg;
 656
 657         if (strlen(field) < PKG_MINIMUM_FIELD_NAME_LEN) {
 658                 goto UNKNOWN_FMT_FIELD;
 659         }
 660
 661         switch (field[0]) {
 662         case 'a':
 663         case 'A':
 664                 if (strcasecmp(field, "Architecture") == 0) {
 665                         p = pkg_get_architecture(pkg);
 666                         if (p) {
 667                                 fprintf(fp, "Architecture: %s\n",
 668                                         p);
 669                         }
 670                 } else if (strcasecmp(field, "Auto-Installed") == 0) {
 671                         if (pkg->auto_installed)
 672                                 fprintf(fp, "Auto-Installed: yes\n");
 673                 } else {
 674                         goto UNKNOWN_FMT_FIELD;
 675                 }
 676                 break;
 677         case 'c':
 678         case 'C':
 679                 if (strcasecmp(field, "Conffiles") == 0) {
 680                         conffile_list_t *cl;
 681                         conffile_list_elt_t *iter;
 682
 683                         cl = pkg_get_ptr(pkg, PKG_CONFFILES);
 684
 685                         if (!cl || nv_pair_list_empty(cl))
 686                                 return;
 687
 688                         fprintf(fp, "Conffiles:\n");
 689                         for (iter = nv_pair_list_first(cl); iter;
 690                              iter = nv_pair_list_next(cl, iter)) {
 691                                 if (((conffile_t *) iter->data)->name
 692                                     && ((conffile_t *) iter->data)->value) {
 693                                         fprintf(fp, " %s %s\n",
 694                                                 ((conffile_t *) iter->data)->
 695                                                 name,
 696                                                 ((conffile_t *) iter->data)->
 697                                                 value);
 698                                 }
 699                         }
 700                 } else if (strcasecmp(field, "Conflicts") == 0) {
 701                         struct depend *cdep;
 702                         compound_depend_t *deps, *dep;
 703                         deps = pkg_get_ptr(pkg, PKG_CONFLICTS);
 704                         if (deps) {
 705                                 fprintf(fp, "Conflicts:");
 706                                 for (i = 0, dep = deps; dep->type; dep++, i++) {
 707                                         cdep = dep->possibilities[0];
 708                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 709                                                 cdep->pkg->name);
 710                                         if (cdep->version) {
 711                                                 fprintf(fp, " (%s%s)",
 712                                                         constraint_to_str(cdep->
 713                                                                           constraint),
 714                                                         cdep->version);
 715                                         }
 716                                 }
 717                                 fprintf(fp, "\n");
 718                         }
 719                 } else {
 720                         goto UNKNOWN_FMT_FIELD;
 721                 }
 722                 break;
 723         case 'd':
 724         case 'D':
 725                 if (strcasecmp(field, "Depends") == 0) {
 726                         dep = pkg_get_depends(pkg, DEPEND);
 727                         if (dep) {
 728                                 fprintf(fp, "Depends:");
 729                                 for (i = 0, j = 0; dep && dep->type; i++, dep++) {
 730                                         if (dep->type != DEPEND)
 731                                                 continue;
 732                                         str = pkg_depend_str(pkg, i);
 733                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 734                                                 str);
 735                                         free(str);
 736                                         j++;
 737                                 }
 738                                 fprintf(fp, "\n");
 739                         }
 740                 } else if (strcasecmp(field, "Description") == 0) {
 741                         p = pkg_get_string(pkg, PKG_DESCRIPTION);
 742                         if (p) {
 743                                 fprintf(fp, "Description: %s\n",
 744                                         p);
 745                         }
 746                 } else {
 747                         goto UNKNOWN_FMT_FIELD;
 748                 }
 749                 break;
 750         case 'e':
 751         case 'E':
 752                 if (pkg->essential) {
 753                         fprintf(fp, "Essential: yes\n");
 754                 }
 755                 break;
 756         case 'f':
 757         case 'F':
 758                 p = pkg_get_string(pkg, PKG_FILENAME);
 759                 if (p) {
 760                         fprintf(fp, "Filename: %s\n", p);
 761                 }
 762                 break;
 763         case 'i':
 764         case 'I':
 765                 if (strcasecmp(field, "Installed-Size") == 0) {
 766                         fprintf(fp, "Installed-Size: %lu\n",
 767                                 (unsigned long) pkg_get_int(pkg, PKG_INSTALLED_SIZE));
 768                 } else if (strcasecmp(field, "Installed-Time") == 0) {
 769                         i = pkg_get_int(pkg, PKG_INSTALLED_TIME);
 770                         if (i) {
 771                                 fprintf(fp, "Installed-Time: %lu\n",
 772                                         (unsigned long) i);
 773                         }
 774                 }
 775                 break;
 776         case 'm':
 777         case 'M':
 778                 if (strcasecmp(field, "Maintainer") == 0) {
 779                         p = pkg_get_string(pkg, PKG_MAINTAINER);
 780                         if (p) {
 781                                 fprintf(fp, "Maintainer: %s\n", p);
 782                         }
 783                 } else if (strcasecmp(field, "MD5sum") == 0) {
 784                         p = pkg_get_md5(pkg);
 785                         if (p) {
 786                                 fprintf(fp, "MD5Sum: %s\n", p);
 787                         }
 788                 } else {
 789                         goto UNKNOWN_FMT_FIELD;
 790                 }
 791                 break;
 792         case 'p':
 793         case 'P':
 794                 if (strcasecmp(field, "Package") == 0) {
 795                         fprintf(fp, "Package: %s\n", pkg->name);
 796                 } else if (strcasecmp(field, "Priority") == 0) {
 797                         fprintf(fp, "Priority: %s\n", pkg_get_string(pkg, PKG_PRIORITY));
 798                 } else if (strcasecmp(field, "Provides") == 0) {
 799                         ab_pkg = pkg_get_ptr(pkg, PKG_PROVIDES);
 800                         if (ab_pkg && ab_pkg[0] && ab_pkg[1]) {
 801                                 fprintf(fp, "Provides:");
 802                                 for (i = 1; ab_pkg[i]; i++) {
 803                                         fprintf(fp, "%s %s", i == 1 ? "" : ",",
 804                                                 ab_pkg[i]->name);
 805                                 }
 806                                 fprintf(fp, "\n");
 807                         }
 808                 } else {
 809                         goto UNKNOWN_FMT_FIELD;
 810                 }
 811                 break;
 812         case 'r':
 813         case 'R':
 814                 if (strcasecmp(field, "Replaces") == 0) {
 815                         ab_pkg = pkg_get_ptr(pkg, PKG_REPLACES);
 816                         if (ab_pkg && *ab_pkg) {
 817                                 fprintf(fp, "Replaces:");
 818                                 for (i = 0; *ab_pkg; i++, ab_pkg++) {
 819                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 820                                                 (*ab_pkg)->name);
 821                                 }
 822                                 fprintf(fp, "\n");
 823                         }
 824                 } else if (strcasecmp(field, "Recommends") == 0) {
 825                         dep = pkg_get_depends(pkg, RECOMMEND);
 826                         if (dep) {
 827                                 fprintf(fp, "Recommends:");
 828                                 for (j = 0, i = 0; dep && dep->type; i++, dep++) {
 829                                         if (dep->type != RECOMMEND)
 830                                                 continue;
 831                                         str = pkg_depend_str(pkg, i);
 832                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 833                                                 str);
 834                                         free(str);
 835                                         j++;
 836                                 }
 837                                 fprintf(fp, "\n");
 838                         }
 839                 } else {
 840                         goto UNKNOWN_FMT_FIELD;
 841                 }
 842                 break;
 843         case 's':
 844         case 'S':
 845                 if (strcasecmp(field, "Section") == 0) {
 846                         p = pkg_get_string(pkg, PKG_SECTION);
 847                         if (p) {
 848                                 fprintf(fp, "Section: %s\n", p);
 849                         }
 850 #if defined HAVE_SHA256
 851                 } else if (strcasecmp(field, "SHA256sum") == 0) {
 852                         p = pkg_get_string(pkg, PKG_SHA256SUM);
 853                         if (p) {
 854                                 fprintf(fp, "SHA256sum: %s\n", p);
 855                         }
 856 #endif
 857                 } else if (strcasecmp(field, "Size") == 0) {
 858                         i = pkg_get_int(pkg, PKG_SIZE);
 859                         if (i) {
 860                                 fprintf(fp, "Size: %lu\n", (unsigned long) i);
 861                         }
 862                 } else if (strcasecmp(field, "Source") == 0) {
 863                         p = pkg_get_string(pkg, PKG_SOURCE);
 864                         if (p) {
 865                                 fprintf(fp, "Source: %s\n", p);
 866                         }
 867                 } else if (strcasecmp(field, "Status") == 0) {
 868                         char *pflag = pkg_state_flag_to_str(pkg->state_flag);
 869                         fprintf(fp, "Status: %s %s %s\n",
 870                                 pkg_state_want_to_str(pkg->state_want),
 871                                 pflag,
 872                                 pkg_state_status_to_str(pkg->state_status));
 873                         free(pflag);
 874                 } else if (strcasecmp(field, "Suggests") == 0) {
 875                         dep = pkg_get_depends(pkg, SUGGEST);
 876                         if (dep) {
 877                                 fprintf(fp, "Suggests:");
 878                                 for (j = 0, i = 0; dep && dep->type; i++, dep++) {
 879                                         if (dep->type != SUGGEST)
 880                                                 continue;
 881                                         str = pkg_depend_str(pkg, i);
 882                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 883                                                 str);
 884                                         free(str);
 885                                         j++;
 886                                 }
 887                                 fprintf(fp, "\n");
 888                         }
 889                 } else {
 890                         goto UNKNOWN_FMT_FIELD;
 891                 }
 892                 break;
 893         case 't':
 894         case 'T':
 895                 if (strcasecmp(field, "Tags") == 0) {
 896                         p = pkg_get_string(pkg, PKG_TAGS);
 897                         if (p) {
 898                                 fprintf(fp, "Tags: %s\n", p);
 899                         }
 900                 }
 901                 break;
 902         case 'v':
 903         case 'V':
 904                 {
 905                         char *version = pkg_version_str_alloc(pkg);
 906                         if (version == NULL)
 907                                 return;
 908                         fprintf(fp, "Version: %s\n", version);
 909                         free(version);
 910                 }
 911                 break;
 912         default:
 913                 goto UNKNOWN_FMT_FIELD;
 914         }
 915
 916         return;
 917
 918 UNKNOWN_FMT_FIELD:
 919         opkg_msg(ERROR, "Internal error: field=%s\n", field);
 920 }
 921
 922 void pkg_formatted_info(FILE * fp, pkg_t * pkg)
 923 {
 924         pkg_formatted_field(fp, pkg, "Package");
 925         pkg_formatted_field(fp, pkg, "Version");
 926         pkg_formatted_field(fp, pkg, "Depends");
 927         pkg_formatted_field(fp, pkg, "Recommends");
 928         pkg_formatted_field(fp, pkg, "Suggests");
 929         pkg_formatted_field(fp, pkg, "Provides");
 930         pkg_formatted_field(fp, pkg, "Replaces");
 931         pkg_formatted_field(fp, pkg, "Conflicts");
 932         pkg_formatted_field(fp, pkg, "Status");
 933         pkg_formatted_field(fp, pkg, "Section");
 934         pkg_formatted_field(fp, pkg, "Essential");
 935         pkg_formatted_field(fp, pkg, "Architecture");
 936         pkg_formatted_field(fp, pkg, "Maintainer");
 937         pkg_formatted_field(fp, pkg, "MD5sum");
 938         pkg_formatted_field(fp, pkg, "Size");
 939         pkg_formatted_field(fp, pkg, "Filename");
 940         pkg_formatted_field(fp, pkg, "Conffiles");
 941         pkg_formatted_field(fp, pkg, "Source");
 942         pkg_formatted_field(fp, pkg, "Description");
 943         pkg_formatted_field(fp, pkg, "Installed-Time");
 944         pkg_formatted_field(fp, pkg, "Tags");
 945         fputs("\n", fp);
 946 }
 947
 948 void pkg_print_status(pkg_t * pkg, FILE * file)
 949 {
 950         if (pkg == NULL) {
 951                 return;
 952         }
 953
 954         pkg_formatted_field(file, pkg, "Package");
 955         pkg_formatted_field(file, pkg, "Version");
 956         pkg_formatted_field(file, pkg, "Depends");
 957         pkg_formatted_field(file, pkg, "Recommends");
 958         pkg_formatted_field(file, pkg, "Suggests");
 959         pkg_formatted_field(file, pkg, "Provides");
 960         pkg_formatted_field(file, pkg, "Replaces");
 961         pkg_formatted_field(file, pkg, "Conflicts");
 962         pkg_formatted_field(file, pkg, "Status");
 963         pkg_formatted_field(file, pkg, "Essential");
 964         pkg_formatted_field(file, pkg, "Architecture");
 965         pkg_formatted_field(file, pkg, "Conffiles");
 966         pkg_formatted_field(file, pkg, "Installed-Time");
 967         pkg_formatted_field(file, pkg, "Auto-Installed");
 968         fputs("\n", file);
 969 }
 970
 971 /*
 972  * libdpkg - Debian packaging suite library routines
 973  * vercmp.c - comparison of version numbers
 974  *
 975  * Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk>
 976  */
 977
 978 /* assume ascii; warning: evaluates x multiple times! */
 979 #define order(x) ((x) == '~' ? -1 \
 980                 : isdigit((x)) ? 0 \
 981                 : !(x) ? 0 \
 982                 : isalpha((x)) ? (x) \
 983                 : (x) + 256)
 984
 985 static int verrevcmp(const char *val, const char *ref)
 986 {
 987         if (!val)
 988                 val = "";
 989         if (!ref)
 990                 ref = "";
 991
 992         while (*val || *ref) {
 993                 int first_diff = 0;
 994
 995                 while ((*val && !isdigit(*val)) || (*ref && !isdigit(*ref))) {
 996                         int vc = order(*val), rc = order(*ref);
 997                         if (vc != rc)
 998                                 return vc - rc;
 999                         val++;
1000                         ref++;
1001                 }
1002
1003                 while (*val == '0')
1004                         val++;
1005                 while (*ref == '0')
1006                         ref++;
1007                 while (isdigit(*val) && isdigit(*ref)) {
1008                         if (!first_diff)
1009                                 first_diff = *val - *ref;
1010                         val++;
1011                         ref++;
1012                 }
1013                 if (isdigit(*val))
1014                         return 1;
1015                 if (isdigit(*ref))
1016                         return -1;
1017                 if (first_diff)
1018                         return first_diff;
1019         }
1020         return 0;
1021 }
1022
1023 int pkg_compare_versions(const pkg_t * pkg, const pkg_t * ref_pkg)
1024 {
1025         unsigned int epoch1 = (unsigned int) pkg_get_int(pkg, PKG_EPOCH);
1026         unsigned int epoch2 = (unsigned int) pkg_get_int(ref_pkg, PKG_EPOCH);
1027         char *revision1 = pkg_get_string(pkg, PKG_REVISION);
1028         char *revision2 = pkg_get_string(ref_pkg, PKG_REVISION);
1029         const char *version1 = pkg_get_string(pkg, PKG_VERSION);
1030         const char *version2 = pkg_get_string(ref_pkg, PKG_VERSION);
1031         int r;
1032
1033         if (epoch1 > epoch2) {
1034                 return 1;
1035         }
1036
1037         if (epoch1 < epoch2) {
1038                 return -1;
1039         }
1040
1041         r = verrevcmp(version1, version2);
1042         if (r) {
1043                 return r;
1044         }
1045
1046         r = verrevcmp(revision1, revision2);
1047         if (r) {
1048                 return r;
1049         }
1050
1051         return r;
1052 }
1053
1054 int pkg_version_satisfied(pkg_t * it, pkg_t * ref, const char *op)
1055 {
1056         int r;
1057
1058         r = pkg_compare_versions(it, ref);
1059
1060         if (strcmp(op, "<=") == 0 || strcmp(op, "<") == 0) {
1061                 return r <= 0;
1062         }
1063
1064         if (strcmp(op, ">=") == 0 || strcmp(op, ">") == 0) {
1065                 return r >= 0;
1066         }
1067
1068         if (strcmp(op, "<<") == 0) {
1069                 return r < 0;
1070         }
1071
1072         if (strcmp(op, ">>") == 0) {
1073                 return r > 0;
1074         }
1075
1076         if (strcmp(op, "=") == 0) {
1077                 return r == 0;
1078         }
1079
1080         opkg_msg(ERROR, "Unknown operator: %s.\n", op);
1081         return 0;
1082 }
1083
1084 int pkg_name_version_and_architecture_compare(const void *p1, const void *p2)
1085 {
1086         const pkg_t * a = *(const pkg_t **)p1;
1087         const pkg_t * b = *(const pkg_t **)p2;
1088         int namecmp;
1089         int vercmp;
1090         int arch_prio1, arch_prio2;
1091         if (!a->name || !b->name) {
1092                 opkg_msg(ERROR, "Internal error: a->name=%p, b->name=%p.\n",
1093                          a->name, b->name);
1094                 return 0;
1095         }
1096
1097         namecmp = strcmp(a->name, b->name);
1098         if (namecmp)
1099                 return namecmp;
1100         vercmp = pkg_compare_versions(a, b);
1101         if (vercmp)
1102                 return vercmp;
1103         arch_prio1 = pkg_get_arch_priority(a);
1104         arch_prio2 = pkg_get_arch_priority(b);
1105         if (!arch_prio1 || !arch_prio2) {
1106                 opkg_msg(ERROR,
1107                          "Internal error: a->arch_priority=%i b->arch_priority=%i.\n",
1108                          arch_prio1, arch_prio2);
1109                 return 0;
1110         }
1111         if (arch_prio1 > arch_prio2)
1112                 return 1;
1113         if (arch_prio1 < arch_prio2)
1114                 return -1;
1115         return 0;
1116 }
1117
1118 int abstract_pkg_name_compare(const void *p1, const void *p2)
1119 {
1120         const abstract_pkg_t *a = *(const abstract_pkg_t **)p1;
1121         const abstract_pkg_t *b = *(const abstract_pkg_t **)p2;
1122         if (!a->name || !b->name) {
1123                 opkg_msg(ERROR, "Internal error: a->name=%p b->name=%p.\n",
1124                          a->name, b->name);
1125                 return 0;
1126         }
1127         return strcmp(a->name, b->name);
1128 }
1129
1130 char *pkg_version_str_alloc(pkg_t * pkg)
1131 {
1132         const char *verstr;
1133         char *version, *revptr;
1134         unsigned int epoch = (unsigned int) pkg_get_int(pkg, PKG_EPOCH);
1135
1136         revptr = pkg_get_string(pkg, PKG_REVISION);
1137         verstr = pkg_get_string(pkg, PKG_VERSION);
1138
1139         if (epoch) {
1140                 if (revptr)
1141                         sprintf_alloc(&version, "%d:%s-%s",
1142                                       epoch, verstr, revptr);
1143                 else
1144                         sprintf_alloc(&version, "%d:%s",
1145                                       epoch, verstr);
1146         } else {
1147                 if (revptr)
1148                         sprintf_alloc(&version, "%s-%s",
1149                                       verstr, revptr);
1150                 else
1151                         version = xstrdup(verstr);
1152         }
1153
1154         return version;
1155 }
1156
1157 /*
1158  * XXX: this should be broken into two functions
1159  */
1160 str_list_t *pkg_get_installed_files(pkg_t * pkg)
1161 {
1162         int err, fd;
1163         char *list_file_name = NULL;
1164         FILE *list_file = NULL;
1165         char *line;
1166         char *installed_file_name;
1167         unsigned int rootdirlen = 0;
1168         int list_from_package;
1169         const char *local_filename;
1170
1171         pkg->installed_files_ref_cnt++;
1172
1173         if (pkg->installed_files) {
1174                 return pkg->installed_files;
1175         }
1176
1177         pkg->installed_files = str_list_alloc();
1178
1179         /*
1180          * For installed packages, look at the package.list file in the database.
1181          * For uninstalled packages, get the file list directly from the package.
1182          */
1183         if (pkg->state_status == SS_NOT_INSTALLED || pkg->dest == NULL)
1184                 list_from_package = 1;
1185         else
1186                 list_from_package = 0;
1187
1188         if (list_from_package) {
1189                 local_filename = pkg_get_string(pkg, PKG_LOCAL_FILENAME);
1190
1191                 if (!local_filename) {
1192                         return pkg->installed_files;
1193                 }
1194                 /* XXX: CLEANUP: Maybe rewrite this to avoid using a temporary
1195                    file. In other words, change deb_extract so that it can
1196                    simply return the file list as a char *[] rather than
1197                    insisting on writing it to a FILE * as it does now. */
1198                 sprintf_alloc(&list_file_name, "%s/%s.list.XXXXXX",
1199                               conf->tmp_dir, pkg->name);
1200                 fd = mkstemp(list_file_name);
1201                 if (fd == -1) {
1202                         opkg_perror(ERROR, "Failed to make temp file %s.",
1203                                     list_file_name);
1204                         free(list_file_name);
1205                         return pkg->installed_files;
1206                 }
1207                 list_file = fdopen(fd, "r+");
1208                 if (list_file == NULL) {
1209                         opkg_perror(ERROR, "Failed to fdopen temp file %s.",
1210                                     list_file_name);
1211                         close(fd);
1212                         unlink(list_file_name);
1213                         free(list_file_name);
1214                         return pkg->installed_files;
1215                 }
1216                 err = pkg_extract_data_file_names_to_stream(pkg, list_file);
1217                 if (err) {
1218                         opkg_msg(ERROR, "Error extracting file list from %s.\n",
1219                                  local_filename);
1220                         fclose(list_file);
1221                         unlink(list_file_name);
1222                         free(list_file_name);
1223                         str_list_deinit(pkg->installed_files);
1224                         pkg->installed_files = NULL;
1225                         return NULL;
1226                 }
1227                 rewind(list_file);
1228         } else {
1229                 sprintf_alloc(&list_file_name, "%s/%s.list",
1230                               pkg->dest->info_dir, pkg->name);
1231                 list_file = fopen(list_file_name, "r");
1232                 if (list_file == NULL) {
1233                         opkg_perror(ERROR, "Failed to open %s", list_file_name);
1234                         free(list_file_name);
1235                         return pkg->installed_files;
1236                 }
1237                 free(list_file_name);
1238         }
1239
1240         if (conf->offline_root)
1241                 rootdirlen = strlen(conf->offline_root);
1242
1243         while (1) {
1244                 char *file_name;
1245
1246                 line = file_read_line_alloc(list_file);
1247                 if (line == NULL) {
1248                         break;
1249                 }
1250                 file_name = line;
1251
1252                 if (list_from_package) {
1253                         if (*file_name == '.') {
1254                                 file_name++;
1255                         }
1256                         if (*file_name == '/') {
1257                                 file_name++;
1258                         }
1259                         sprintf_alloc(&installed_file_name, "%s%s",
1260                                       pkg->dest->root_dir, file_name);
1261                 } else {
1262                         if (conf->offline_root &&
1263                             strncmp(conf->offline_root, file_name,
1264                                     rootdirlen)) {
1265                                 sprintf_alloc(&installed_file_name, "%s%s",
1266                                               conf->offline_root, file_name);
1267                         } else {
1268                                 // already contains root_dir as header -> ABSOLUTE
1269                                 sprintf_alloc(&installed_file_name, "%s",
1270                                               file_name);
1271                         }
1272                 }
1273                 str_list_append(pkg->installed_files, installed_file_name);
1274                 free(installed_file_name);
1275                 free(line);
1276         }
1277
1278         fclose(list_file);
1279
1280         if (list_from_package) {
1281                 unlink(list_file_name);
1282                 free(list_file_name);
1283         }
1284
1285         return pkg->installed_files;
1286 }
1287
1288 /* XXX: CLEANUP: This function and it's counterpart,
1289    (pkg_get_installed_files), do not match our init/deinit naming
1290    convention. Nor the alloc/free convention. But, then again, neither
1291    of these conventions currrently fit the way these two functions
1292    work. */
1293 void pkg_free_installed_files(pkg_t * pkg)
1294 {
1295         pkg->installed_files_ref_cnt--;
1296
1297         if (pkg->installed_files_ref_cnt > 0)
1298                 return;
1299
1300         if (pkg->installed_files) {
1301                 str_list_purge(pkg->installed_files);
1302         }
1303
1304         pkg->installed_files = NULL;
1305 }
1306
1307 void pkg_remove_installed_files_list(pkg_t * pkg)
1308 {
1309         char *list_file_name;
1310
1311         sprintf_alloc(&list_file_name, "%s/%s.list",
1312                       pkg->dest->info_dir, pkg->name);
1313
1314         if (!conf->noaction)
1315                 (void)unlink(list_file_name);
1316
1317         free(list_file_name);
1318 }
1319
1320 conffile_t *pkg_get_conffile(pkg_t * pkg, const char *file_name)
1321 {
1322         conffile_list_elt_t *iter;
1323         conffile_list_t *cl;
1324         conffile_t *conffile;
1325
1326         if (pkg == NULL) {
1327                 return NULL;
1328         }
1329
1330         cl = pkg_get_ptr(pkg, PKG_CONFFILES);
1331
1332         for (iter = cl ? nv_pair_list_first(cl) : NULL; iter;
1333              iter = nv_pair_list_next(cl, iter)) {
1334                 conffile = (conffile_t *) iter->data;
1335
1336                 if (strcmp(conffile->name, file_name) == 0) {
1337                         return conffile;
1338                 }
1339         }
1340
1341         return NULL;
1342 }
1343
1344 int pkg_run_script(pkg_t * pkg, const char *script, const char *args)
1345 {
1346         int err;
1347         char *path;
1348         char *cmd;
1349         char *tmp_unpack_dir;
1350
1351         if (conf->noaction)
1352                 return 0;
1353
1354         /* XXX: FEATURE: When conf->offline_root is set, we should run the
1355            maintainer script within a chroot environment. */
1356         if (conf->offline_root && !conf->force_postinstall) {
1357                 opkg_msg(INFO, "Offline root mode: not running %s.%s.\n",
1358                          pkg->name, script);
1359                 return 0;
1360         }
1361
1362         /* Installed packages have scripts in pkg->dest->info_dir, uninstalled packages
1363            have scripts in tmp_unpack_dir. */
1364         if (pkg->state_status == SS_INSTALLED
1365             || pkg->state_status == SS_UNPACKED) {
1366                 if (pkg->dest == NULL) {
1367                         opkg_msg(ERROR, "Internal error: %s has a NULL dest.\n",
1368                                  pkg->name);
1369                         return -1;
1370                 }
1371                 sprintf_alloc(&path, "%s/%s.%s", pkg->dest->info_dir, pkg->name,
1372                               script);
1373         } else {
1374                 tmp_unpack_dir = pkg_get_string(pkg, PKG_TMP_UNPACK_DIR);
1375                 if (tmp_unpack_dir == NULL) {
1376                         opkg_msg(ERROR,
1377                                  "Internal error: %s has a NULL tmp_unpack_dir.\n",
1378                                  pkg->name);
1379                         return -1;
1380                 }
1381                 sprintf_alloc(&path, "%s/%s", tmp_unpack_dir, script);
1382         }
1383
1384         opkg_msg(INFO, "Running script %s.\n", path);
1385
1386         setenv("PKG_ROOT",
1387                pkg->dest ? pkg->dest->root_dir : conf->default_dest->root_dir,
1388                1);
1389
1390         if (pkg->is_upgrade)
1391                 setenv("PKG_UPGRADE", "1", 1);
1392         else
1393                 setenv("PKG_UPGRADE", "0", 1);
1394
1395         if (!file_exists(path)) {
1396                 free(path);
1397                 return 0;
1398         }
1399
1400         sprintf_alloc(&cmd, "%s %s", path, args);
1401         free(path);
1402         {
1403                 const char *argv[] = { "sh", "-c", cmd, NULL };
1404                 err = xsystem(argv);
1405         }
1406         free(cmd);
1407
1408         if (err) {
1409                 opkg_msg(ERROR,
1410                          "package \"%s\" %s script returned status %d.\n",
1411                          pkg->name, script, err);
1412                 return err;
1413         }
1414
1415         return 0;
1416 }
1417
1418 int pkg_arch_supported(pkg_t * pkg)
1419 {
1420         nv_pair_list_elt_t *l;
1421         char *architecture = pkg_get_architecture(pkg);
1422
1423         if (!architecture)
1424                 return 1;
1425
1426         list_for_each_entry(l, &conf->arch_list.head, node) {
1427                 nv_pair_t *nv = (nv_pair_t *) l->data;
1428                 if (strcmp(nv->name, architecture) == 0) {
1429                         opkg_msg(DEBUG,
1430                                  "Arch %s (priority %s) supported for pkg %s.\n",
1431                                  nv->name, nv->value, pkg->name);
1432                         return 1;
1433                 }
1434         }
1435
1436         opkg_msg(DEBUG, "Arch %s unsupported for pkg %s.\n",
1437                  architecture, pkg->name);
1438         return 0;
1439 }
1440
1441 void pkg_info_preinstall_check(void)
1442 {
1443         int i;
1444         pkg_vec_t *installed_pkgs = pkg_vec_alloc();
1445
1446         /* update the file owner data structure */
1447         opkg_msg(INFO, "Updating file owner list.\n");
1448         pkg_hash_fetch_all_installed(installed_pkgs);
1449         for (i = 0; i < installed_pkgs->len; i++) {
1450                 pkg_t *pkg = installed_pkgs->pkgs[i];
1451                 str_list_t *installed_files = pkg_get_installed_files(pkg);     /* this causes installed_files to be cached */
1452                 str_list_elt_t *iter, *niter;
1453                 if (installed_files == NULL) {
1454                         opkg_msg(ERROR, "Failed to determine installed "
1455                                  "files for pkg %s.\n", pkg->name);
1456                         break;
1457                 }
1458                 for (iter = str_list_first(installed_files), niter =
1459                      str_list_next(installed_files, iter); iter;
1460                      iter = niter, niter =
1461                      str_list_next(installed_files, iter)) {
1462                         char *installed_file = (char *)iter->data;
1463                         file_hash_set_file_owner(installed_file, pkg);
1464                 }
1465                 pkg_free_installed_files(pkg);
1466         }
1467         pkg_vec_free(installed_pkgs);
1468 }
1469
1470 struct pkg_write_filelist_data {
1471         pkg_t *pkg;
1472         FILE *stream;
1473 };
1474
1475 static void
1476 pkg_write_filelist_helper(const char *key, void *entry_, void *data_)
1477 {
1478         struct pkg_write_filelist_data *data = data_;
1479         pkg_t *entry = entry_;
1480         if (entry == data->pkg) {
1481                 fprintf(data->stream, "%s\n", key);
1482         }
1483 }
1484
1485 int pkg_write_filelist(pkg_t * pkg)
1486 {
1487         struct pkg_write_filelist_data data;
1488         char *list_file_name;
1489
1490         sprintf_alloc(&list_file_name, "%s/%s.list",
1491                       pkg->dest->info_dir, pkg->name);
1492
1493         opkg_msg(INFO, "Creating %s file for pkg %s.\n",
1494                  list_file_name, pkg->name);
1495
1496         data.stream = fopen(list_file_name, "w");
1497         if (!data.stream) {
1498                 opkg_perror(ERROR, "Failed to open %s", list_file_name);
1499                 free(list_file_name);
1500                 return -1;
1501         }
1502
1503         data.pkg = pkg;
1504         hash_table_foreach(&conf->file_hash, pkg_write_filelist_helper, &data);
1505         fclose(data.stream);
1506         free(list_file_name);
1507
1508         pkg->state_flag &= ~SF_FILELIST_CHANGED;
1509
1510         return 0;
1511 }
1512
1513 int pkg_write_changed_filelists(void)
1514 {
1515         pkg_vec_t *installed_pkgs = pkg_vec_alloc();
1516         int i, err, ret = 0;
1517
1518         if (conf->noaction)
1519                 return 0;
1520
1521         opkg_msg(INFO, "Saving changed filelists.\n");
1522
1523         pkg_hash_fetch_all_installed(installed_pkgs);
1524         for (i = 0; i < installed_pkgs->len; i++) {
1525                 pkg_t *pkg = installed_pkgs->pkgs[i];
1526                 if (pkg->state_flag & SF_FILELIST_CHANGED) {
1527                         err = pkg_write_filelist(pkg);
1528                         if (err)
1529                                 ret = -1;
1530                 }
1531         }
1532
1533         pkg_vec_free(installed_pkgs);
1534
1535         return ret;
1536 }