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