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 %zu 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                 case PKG_ALTERNATIVES:
 325                         ptr = pkg_get_ptr(pkg, blob_id(cur));
 326
 327                         if (ptr) {
 328                                 struct pkg_alternatives *pkg_alts = ptr;
 329
 330                                 while (pkg_alts->nalts)
 331                                         free(pkg_alts->alts[--pkg_alts->nalts]);
 332                                 free(pkg_alts->alts);
 333                                 free(pkg_alts);
 334                         }
 335
 336                         pkg_set_ptr(pkg, blob_id(cur), NULL);
 337                         break;
 338                 }
 339         }
 340
 341         //conffile_list_deinit(&pkg->conffiles);
 342
 343         /* XXX: QUESTION: Is forcing this to 1 correct? I suppose so,
 344            since if they are calling deinit, they should know. Maybe do an
 345            assertion here instead? */
 346         pkg->installed_files_ref_cnt = 1;
 347         pkg_free_installed_files(pkg);
 348         pkg->essential = 0;
 349
 350         blob_buf_free(&pkg->blob);
 351 }
 352
 353 int pkg_init_from_file(pkg_t * pkg, const char *filename)
 354 {
 355         int fd, err = 0;
 356         FILE *control_file;
 357         char *control_path, *tmp;
 358
 359         pkg_init(pkg);
 360
 361         if (!(pkg->state_flag & SF_NEED_DETAIL)) {
 362                 opkg_msg(DEBUG, "applying abpkg flag to %s\n", filename);
 363                 pkg->state_flag |= SF_NEED_DETAIL;
 364         }
 365
 366         pkg_set_string(pkg, PKG_LOCAL_FILENAME, filename);
 367
 368         tmp = xstrdup(filename);
 369         sprintf_alloc(&control_path, "%s/%s.control.XXXXXX",
 370                       conf->tmp_dir, basename(tmp));
 371         free(tmp);
 372         fd = mkstemp(control_path);
 373         if (fd == -1) {
 374                 opkg_perror(ERROR, "Failed to make temp file %s", control_path);
 375                 err = -1;
 376                 goto err0;
 377         }
 378
 379         control_file = fdopen(fd, "r+");
 380         if (control_file == NULL) {
 381                 opkg_perror(ERROR, "Failed to fdopen %s", control_path);
 382                 close(fd);
 383                 err = -1;
 384                 goto err1;
 385         }
 386
 387         err = pkg_extract_control_file_to_stream(pkg, control_file);
 388         if (err) {
 389                 opkg_msg(ERROR, "Failed to extract control file from %s.\n",
 390                          filename);
 391                 goto err2;
 392         }
 393
 394         rewind(control_file);
 395
 396         if ((err = pkg_parse_from_stream(pkg, control_file, 0))) {
 397                 if (err == 1) {
 398                         opkg_msg(ERROR, "Malformed package file %s.\n",
 399                                  filename);
 400                 }
 401                 err = -1;
 402         }
 403
 404 err2:
 405         fclose(control_file);
 406 err1:
 407         unlink(control_path);
 408 err0:
 409         free(control_path);
 410
 411         return err;
 412 }
 413
 414 /* Merge any new information in newpkg into oldpkg */
 415 int pkg_merge(pkg_t * oldpkg, pkg_t * newpkg)
 416 {
 417         abstract_pkg_t **ab;
 418
 419         if (oldpkg == newpkg) {
 420                 return 0;
 421         }
 422
 423         if (!oldpkg->auto_installed)
 424                 oldpkg->auto_installed = newpkg->auto_installed;
 425
 426         if (!oldpkg->src)
 427                 oldpkg->src = newpkg->src;
 428         if (!oldpkg->dest)
 429                 oldpkg->dest = newpkg->dest;
 430         if (!oldpkg->arch_index)
 431                 oldpkg->arch_index = newpkg->arch_index;
 432         if (!pkg_get_string(oldpkg, PKG_SECTION))
 433                 pkg_set_string(oldpkg, PKG_SECTION, pkg_get_string(newpkg, PKG_SECTION));
 434         if (!pkg_get_string(oldpkg, PKG_MAINTAINER))
 435                 pkg_set_string(oldpkg, PKG_MAINTAINER, pkg_get_string(newpkg, PKG_MAINTAINER));
 436         if (!pkg_get_string(oldpkg, PKG_DESCRIPTION))
 437                 pkg_set_string(oldpkg, PKG_DESCRIPTION, pkg_get_string(newpkg, PKG_DESCRIPTION));
 438
 439         if (!pkg_get_ptr(oldpkg, PKG_DEPENDS)) {
 440                 pkg_set_ptr(oldpkg, PKG_DEPENDS, pkg_get_ptr(newpkg, PKG_DEPENDS));
 441                 pkg_set_ptr(newpkg, PKG_DEPENDS, NULL);
 442         }
 443
 444         ab = pkg_get_ptr(oldpkg, PKG_PROVIDES);
 445
 446         if (!ab || !ab[0] || !ab[1]) {
 447                 pkg_set_ptr(oldpkg, PKG_PROVIDES, pkg_get_ptr(newpkg, PKG_PROVIDES));
 448                 pkg_set_ptr(newpkg, PKG_PROVIDES, NULL);
 449
 450                 if (ab)
 451                         free(ab);
 452         }
 453
 454         if (!pkg_get_ptr(oldpkg, PKG_CONFLICTS)) {
 455                 pkg_set_ptr(oldpkg, PKG_CONFLICTS, pkg_get_ptr(newpkg, PKG_CONFLICTS));
 456                 pkg_set_ptr(newpkg, PKG_CONFLICTS, NULL);
 457         }
 458
 459         if (!pkg_get_ptr(oldpkg, PKG_REPLACES)) {
 460                 pkg_set_ptr(oldpkg, PKG_REPLACES, pkg_get_ptr(newpkg, PKG_REPLACES));
 461                 pkg_set_ptr(newpkg, PKG_REPLACES, NULL);
 462         }
 463
 464         if (!pkg_get_string(oldpkg, PKG_FILENAME))
 465                 pkg_set_string(oldpkg, PKG_FILENAME, pkg_get_string(newpkg, PKG_FILENAME));
 466         if (!pkg_get_string(oldpkg, PKG_LOCAL_FILENAME))
 467                 pkg_set_string(oldpkg, PKG_LOCAL_FILENAME, pkg_get_string(newpkg, PKG_LOCAL_FILENAME));
 468         if (!pkg_get_string(oldpkg, PKG_TMP_UNPACK_DIR))
 469                 pkg_set_string(oldpkg, PKG_TMP_UNPACK_DIR, pkg_get_string(newpkg, PKG_TMP_UNPACK_DIR));
 470         if (!pkg_get_md5(oldpkg))
 471                 pkg_set_md5(oldpkg, pkg_get_md5(newpkg));
 472         if (!pkg_get_sha256(oldpkg))
 473                 pkg_set_sha256(oldpkg, pkg_get_sha256(newpkg));
 474         if (!pkg_get_int(oldpkg, PKG_SIZE))
 475                 pkg_set_int(oldpkg, PKG_SIZE, pkg_get_int(newpkg, PKG_SIZE));
 476         if (!pkg_get_int(oldpkg, PKG_INSTALLED_SIZE))
 477                 pkg_set_int(oldpkg, PKG_INSTALLED_SIZE, pkg_get_int(newpkg, PKG_INSTALLED_SIZE));
 478         if (!pkg_get_string(oldpkg, PKG_PRIORITY))
 479                 pkg_set_string(oldpkg, PKG_PRIORITY, pkg_get_string(newpkg, PKG_PRIORITY));
 480         if (!pkg_get_string(oldpkg, PKG_SOURCE))
 481                 pkg_set_string(oldpkg, PKG_SOURCE, pkg_get_string(newpkg, PKG_SOURCE));
 482         if (!pkg_get_string(oldpkg, PKG_ABIVERSION))
 483                 pkg_set_string(oldpkg, PKG_ABIVERSION, pkg_get_string(newpkg, PKG_ABIVERSION));
 484
 485         if (!pkg_get_ptr(oldpkg, PKG_CONFFILES)) {
 486                 pkg_set_ptr(oldpkg, PKG_CONFFILES, pkg_get_ptr(newpkg, PKG_CONFFILES));
 487                 pkg_set_ptr(newpkg, PKG_CONFFILES, NULL);
 488         }
 489
 490         if (!oldpkg->installed_files) {
 491                 oldpkg->installed_files = newpkg->installed_files;
 492                 oldpkg->installed_files_ref_cnt =
 493                     newpkg->installed_files_ref_cnt;
 494                 newpkg->installed_files = NULL;
 495         }
 496
 497         if (!oldpkg->essential)
 498                 oldpkg->essential = newpkg->essential;
 499
 500         if (!oldpkg->provided_by_hand)
 501                 oldpkg->provided_by_hand = newpkg->provided_by_hand;
 502
 503         return 0;
 504 }
 505
 506 static void abstract_pkg_init(abstract_pkg_t * ab_pkg)
 507 {
 508         ab_pkg->provided_by = abstract_pkg_vec_alloc();
 509         ab_pkg->dependencies_checked = 0;
 510         ab_pkg->state_status = SS_NOT_INSTALLED;
 511 }
 512
 513 abstract_pkg_t *abstract_pkg_new(void)
 514 {
 515         abstract_pkg_t *ab_pkg;
 516
 517         ab_pkg = xcalloc(1, sizeof(abstract_pkg_t));
 518         abstract_pkg_init(ab_pkg);
 519
 520         return ab_pkg;
 521 }
 522
 523 static const char *pkg_state_want_to_str(pkg_state_want_t sw)
 524 {
 525         int i;
 526
 527         for (i = 0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
 528                 if (pkg_state_want_map[i].value == sw) {
 529                         return pkg_state_want_map[i].str;
 530                 }
 531         }
 532
 533         opkg_msg(ERROR, "Internal error: state_want=%d\n", sw);
 534         return "<STATE_WANT_UNKNOWN>";
 535 }
 536
 537 pkg_state_want_t pkg_state_want_from_str(char *str)
 538 {
 539         int i;
 540
 541         for (i = 0; i < ARRAY_SIZE(pkg_state_want_map); i++) {
 542                 if (strcmp(str, pkg_state_want_map[i].str) == 0) {
 543                         return pkg_state_want_map[i].value;
 544                 }
 545         }
 546
 547         opkg_msg(ERROR, "Internal error: state_want=%s\n", str);
 548         return SW_UNKNOWN;
 549 }
 550
 551 static char *pkg_state_flag_to_str(pkg_state_flag_t sf)
 552 {
 553         int i;
 554         unsigned int len;
 555         char *str;
 556
 557         /* clear the temporary flags before converting to string */
 558         sf &= SF_NONVOLATILE_FLAGS;
 559
 560         if (sf == 0)
 561                 return xstrdup("ok");
 562
 563         len = 0;
 564         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 565                 if (sf & pkg_state_flag_map[i].value)
 566                         len += strlen(pkg_state_flag_map[i].str) + 1;
 567         }
 568
 569         str = xmalloc(len + 1);
 570         str[0] = '\0';
 571
 572         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 573                 if (sf & pkg_state_flag_map[i].value) {
 574                         strncat(str, pkg_state_flag_map[i].str, len);
 575                         strncat(str, ",", len);
 576                 }
 577         }
 578
 579         len = strlen(str);
 580         str[len - 1] = '\0';    /* squash last comma */
 581
 582         return str;
 583 }
 584
 585 pkg_state_flag_t pkg_state_flag_from_str(const char *str)
 586 {
 587         int i;
 588         int sf = SF_OK;
 589         const char *sfname;
 590         unsigned int sfname_len;
 591
 592         if (strcmp(str, "ok") == 0) {
 593                 return SF_OK;
 594         }
 595         for (i = 0; i < ARRAY_SIZE(pkg_state_flag_map); i++) {
 596                 sfname = pkg_state_flag_map[i].str;
 597                 sfname_len = strlen(sfname);
 598                 if (strncmp(str, sfname, sfname_len) == 0) {
 599                         sf |= pkg_state_flag_map[i].value;
 600                         str += sfname_len;
 601                         if (str[0] == ',') {
 602                                 str++;
 603                         } else {
 604                                 break;
 605                         }
 606                 }
 607         }
 608
 609         return sf;
 610 }
 611
 612 static const char *pkg_state_status_to_str(pkg_state_status_t ss)
 613 {
 614         int i;
 615
 616         for (i = 0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
 617                 if (pkg_state_status_map[i].value == ss) {
 618                         return pkg_state_status_map[i].str;
 619                 }
 620         }
 621
 622         opkg_msg(ERROR, "Internal error: state_status=%d\n", ss);
 623         return "<STATE_STATUS_UNKNOWN>";
 624 }
 625
 626 pkg_state_status_t pkg_state_status_from_str(const char *str)
 627 {
 628         int i;
 629
 630         for (i = 0; i < ARRAY_SIZE(pkg_state_status_map); i++) {
 631                 if (strcmp(str, pkg_state_status_map[i].str) == 0) {
 632                         return pkg_state_status_map[i].value;
 633                 }
 634         }
 635
 636         opkg_msg(ERROR, "Internal error: state_status=%s\n", str);
 637         return SS_NOT_INSTALLED;
 638 }
 639
 640 void pkg_formatted_field(FILE * fp, pkg_t * pkg, const char *field)
 641 {
 642         int i, j;
 643         char *str;
 644         const char *p;
 645         compound_depend_t *dep;
 646         abstract_pkg_t **ab_pkg;
 647
 648         if (strlen(field) < PKG_MINIMUM_FIELD_NAME_LEN) {
 649                 goto UNKNOWN_FMT_FIELD;
 650         }
 651
 652         switch (field[0]) {
 653         case 'a':
 654         case 'A':
 655                 if (strcasecmp(field, "ABIVersion") == 0) {
 656                         p = pkg_get_string(pkg, PKG_ABIVERSION);
 657                         if (p) {
 658                                 fprintf(fp, "ABIVersion: %s\n", p);
 659                         }
 660                 } else if (strcasecmp(field, "Alternatives") == 0) {
 661                         struct pkg_alternatives *pkg_alts = pkg_get_ptr(pkg, PKG_ALTERNATIVES);
 662
 663                         if (pkg_alts && pkg_alts->nalts > 0) {
 664                                 int i;
 665                                 struct pkg_alternative *alt;
 666
 667                                 alt = pkg_alts->alts[0];
 668                                 fprintf(fp, "Alternatives: %d:%s:%s", alt->prio, alt->path, alt->altpath);
 669                                 for (i = 1; i < pkg_alts->nalts; i++) {
 670                                         alt = pkg_alts->alts[i];
 671                                         fprintf(fp, ", %d:%s:%s", alt->prio, alt->path, alt->altpath);
 672                                 }
 673                                 fputs("\n", fp);
 674                         }
 675                 } else if (strcasecmp(field, "Architecture") == 0) {
 676                         p = pkg_get_architecture(pkg);
 677                         if (p) {
 678                                 fprintf(fp, "Architecture: %s\n",
 679                                         p);
 680                         }
 681                 } else if (strcasecmp(field, "Auto-Installed") == 0) {
 682                         if (pkg->auto_installed)
 683                                 fprintf(fp, "Auto-Installed: yes\n");
 684                 } else {
 685                         goto UNKNOWN_FMT_FIELD;
 686                 }
 687                 break;
 688         case 'c':
 689         case 'C':
 690                 if (strcasecmp(field, "Conffiles") == 0) {
 691                         conffile_list_t *cl;
 692                         conffile_list_elt_t *iter;
 693
 694                         cl = pkg_get_ptr(pkg, PKG_CONFFILES);
 695
 696                         if (!cl || nv_pair_list_empty(cl))
 697                                 return;
 698
 699                         fprintf(fp, "Conffiles:\n");
 700                         for (iter = nv_pair_list_first(cl); iter;
 701                              iter = nv_pair_list_next(cl, iter)) {
 702                                 if (((conffile_t *) iter->data)->name
 703                                     && ((conffile_t *) iter->data)->value) {
 704                                         fprintf(fp, " %s %s\n",
 705                                                 ((conffile_t *) iter->data)->
 706                                                 name,
 707                                                 ((conffile_t *) iter->data)->
 708                                                 value);
 709                                 }
 710                         }
 711                 } else if (strcasecmp(field, "Conflicts") == 0) {
 712                         struct depend *cdep;
 713                         compound_depend_t *deps, *dep;
 714                         deps = pkg_get_ptr(pkg, PKG_CONFLICTS);
 715                         if (deps) {
 716                                 fprintf(fp, "Conflicts:");
 717                                 for (i = 0, dep = deps; dep->type; dep++, i++) {
 718                                         cdep = dep->possibilities[0];
 719                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 720                                                 cdep->pkg->name);
 721                                         if (cdep->version) {
 722                                                 fprintf(fp, " (%s%s)",
 723                                                         constraint_to_str(cdep->
 724                                                                           constraint),
 725                                                         cdep->version);
 726                                         }
 727                                 }
 728                                 fprintf(fp, "\n");
 729                         }
 730                 } else {
 731                         goto UNKNOWN_FMT_FIELD;
 732                 }
 733                 break;
 734         case 'd':
 735         case 'D':
 736                 if (strcasecmp(field, "Depends") == 0) {
 737                         dep = pkg_get_depends(pkg, DEPEND);
 738                         if (dep) {
 739                                 fprintf(fp, "Depends:");
 740                                 for (i = 0, j = 0; dep && dep->type; i++, dep++) {
 741                                         if (dep->type != DEPEND)
 742                                                 continue;
 743                                         str = pkg_depend_str(pkg, i);
 744                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 745                                                 str);
 746                                         free(str);
 747                                         j++;
 748                                 }
 749                                 fprintf(fp, "\n");
 750                         }
 751                 } else if (strcasecmp(field, "Description") == 0) {
 752                         p = pkg_get_string(pkg, PKG_DESCRIPTION);
 753                         if (p) {
 754                                 fprintf(fp, "Description: %s\n",
 755                                         p);
 756                         }
 757                 } else {
 758                         goto UNKNOWN_FMT_FIELD;
 759                 }
 760                 break;
 761         case 'e':
 762         case 'E':
 763                 if (pkg->essential) {
 764                         fprintf(fp, "Essential: yes\n");
 765                 }
 766                 break;
 767         case 'f':
 768         case 'F':
 769                 p = pkg_get_string(pkg, PKG_FILENAME);
 770                 if (p) {
 771                         fprintf(fp, "Filename: %s\n", p);
 772                 }
 773                 break;
 774         case 'i':
 775         case 'I':
 776                 if (strcasecmp(field, "Installed-Size") == 0) {
 777                         fprintf(fp, "Installed-Size: %lu\n",
 778                                 (unsigned long) pkg_get_int(pkg, PKG_INSTALLED_SIZE));
 779                 } else if (strcasecmp(field, "Installed-Time") == 0) {
 780                         i = pkg_get_int(pkg, PKG_INSTALLED_TIME);
 781                         if (i) {
 782                                 fprintf(fp, "Installed-Time: %lu\n",
 783                                         (unsigned long) i);
 784                         }
 785                 }
 786                 break;
 787         case 'm':
 788         case 'M':
 789                 if (strcasecmp(field, "Maintainer") == 0) {
 790                         p = pkg_get_string(pkg, PKG_MAINTAINER);
 791                         if (p) {
 792                                 fprintf(fp, "Maintainer: %s\n", p);
 793                         }
 794                 } else if (strcasecmp(field, "MD5sum") == 0) {
 795                         p = pkg_get_md5(pkg);
 796                         if (p) {
 797                                 fprintf(fp, "MD5Sum: %s\n", p);
 798                         }
 799                 } else {
 800                         goto UNKNOWN_FMT_FIELD;
 801                 }
 802                 break;
 803         case 'p':
 804         case 'P':
 805                 if (strcasecmp(field, "Package") == 0) {
 806                         fprintf(fp, "Package: %s\n", pkg->name);
 807                 } else if (strcasecmp(field, "Priority") == 0) {
 808                         fprintf(fp, "Priority: %s\n", pkg_get_string(pkg, PKG_PRIORITY));
 809                 } else if (strcasecmp(field, "Provides") == 0) {
 810                         ab_pkg = pkg_get_ptr(pkg, PKG_PROVIDES);
 811                         if (ab_pkg && ab_pkg[0] && ab_pkg[1]) {
 812                                 fprintf(fp, "Provides:");
 813                                 for (i = 1; ab_pkg[i]; i++) {
 814                                         fprintf(fp, "%s %s", i == 1 ? "" : ",",
 815                                                 ab_pkg[i]->name);
 816                                 }
 817                                 fprintf(fp, "\n");
 818                         }
 819                 } else {
 820                         goto UNKNOWN_FMT_FIELD;
 821                 }
 822                 break;
 823         case 'r':
 824         case 'R':
 825                 if (strcasecmp(field, "Replaces") == 0) {
 826                         ab_pkg = pkg_get_ptr(pkg, PKG_REPLACES);
 827                         if (ab_pkg && ab_pkg[0]) {
 828                                 fprintf(fp, "Replaces:");
 829                                 for (i = 0; ab_pkg[i]; i++) {
 830                                         fprintf(fp, "%s %s", i == 0 ? "" : ",",
 831                                                 ab_pkg[i]->name);
 832                                 }
 833                                 fprintf(fp, "\n");
 834                         }
 835                 } else if (strcasecmp(field, "Recommends") == 0) {
 836                         dep = pkg_get_depends(pkg, RECOMMEND);
 837                         if (dep) {
 838                                 fprintf(fp, "Recommends:");
 839                                 for (j = 0, i = 0; dep && dep->type; i++, dep++) {
 840                                         if (dep->type != RECOMMEND)
 841                                                 continue;
 842                                         str = pkg_depend_str(pkg, i);
 843                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 844                                                 str);
 845                                         free(str);
 846                                         j++;
 847                                 }
 848                                 fprintf(fp, "\n");
 849                         }
 850                 } else {
 851                         goto UNKNOWN_FMT_FIELD;
 852                 }
 853                 break;
 854         case 's':
 855         case 'S':
 856                 if (strcasecmp(field, "Section") == 0) {
 857                         p = pkg_get_string(pkg, PKG_SECTION);
 858                         if (p) {
 859                                 fprintf(fp, "Section: %s\n", p);
 860                         }
 861                 } else if (strcasecmp(field, "SHA256sum") == 0) {
 862                         p = pkg_get_string(pkg, PKG_SHA256SUM);
 863                         if (p) {
 864                                 fprintf(fp, "SHA256sum: %s\n", p);
 865                         }
 866                 } else if (strcasecmp(field, "Size") == 0) {
 867                         i = pkg_get_int(pkg, PKG_SIZE);
 868                         if (i) {
 869                                 fprintf(fp, "Size: %lu\n", (unsigned long) i);
 870                         }
 871                 } else if (strcasecmp(field, "Source") == 0) {
 872                         p = pkg_get_string(pkg, PKG_SOURCE);
 873                         if (p) {
 874                                 fprintf(fp, "Source: %s\n", p);
 875                         }
 876                 } else if (strcasecmp(field, "Status") == 0) {
 877                         char *pflag = pkg_state_flag_to_str(pkg->state_flag);
 878                         fprintf(fp, "Status: %s %s %s\n",
 879                                 pkg_state_want_to_str(pkg->state_want),
 880                                 pflag,
 881                                 pkg_state_status_to_str(pkg->state_status));
 882                         free(pflag);
 883                 } else if (strcasecmp(field, "Suggests") == 0) {
 884                         dep = pkg_get_depends(pkg, SUGGEST);
 885                         if (dep) {
 886                                 fprintf(fp, "Suggests:");
 887                                 for (j = 0, i = 0; dep && dep->type; i++, dep++) {
 888                                         if (dep->type != SUGGEST)
 889                                                 continue;
 890                                         str = pkg_depend_str(pkg, i);
 891                                         fprintf(fp, "%s %s", j == 0 ? "" : ",",
 892                                                 str);
 893                                         free(str);
 894                                         j++;
 895                                 }
 896                                 fprintf(fp, "\n");
 897                         }
 898                 } else {
 899                         goto UNKNOWN_FMT_FIELD;
 900                 }
 901                 break;
 902         case 't':
 903         case 'T':
 904                 if (strcasecmp(field, "Tags") == 0) {
 905                         p = pkg_get_string(pkg, PKG_TAGS);
 906                         if (p) {
 907                                 fprintf(fp, "Tags: %s\n", p);
 908                         }
 909                 }
 910                 break;
 911         case 'v':
 912         case 'V':
 913                 {
 914                         char *version = pkg_version_str_alloc(pkg);
 915                         if (version == NULL)
 916                                 return;
 917                         fprintf(fp, "Version: %s\n", version);
 918                         free(version);
 919                 }
 920                 break;
 921         default:
 922                 goto UNKNOWN_FMT_FIELD;
 923         }
 924
 925         return;
 926
 927 UNKNOWN_FMT_FIELD:
 928         opkg_msg(ERROR, "Internal error: field=%s\n", field);
 929 }
 930
 931 void pkg_formatted_info(FILE * fp, pkg_t * pkg)
 932 {
 933         pkg_formatted_field(fp, pkg, "Package");
 934         pkg_formatted_field(fp, pkg, "Version");
 935         pkg_formatted_field(fp, pkg, "Depends");
 936         pkg_formatted_field(fp, pkg, "Recommends");
 937         pkg_formatted_field(fp, pkg, "Suggests");
 938         pkg_formatted_field(fp, pkg, "Provides");
 939         pkg_formatted_field(fp, pkg, "Replaces");
 940         pkg_formatted_field(fp, pkg, "Conflicts");
 941         pkg_formatted_field(fp, pkg, "Status");
 942         pkg_formatted_field(fp, pkg, "Section");
 943         pkg_formatted_field(fp, pkg, "Essential");
 944         pkg_formatted_field(fp, pkg, "Architecture");
 945         pkg_formatted_field(fp, pkg, "Maintainer");
 946         pkg_formatted_field(fp, pkg, "MD5sum");
 947         pkg_formatted_field(fp, pkg, "Size");
 948         pkg_formatted_field(fp, pkg, "Filename");
 949         pkg_formatted_field(fp, pkg, "Conffiles");
 950         pkg_formatted_field(fp, pkg, "Source");
 951         pkg_formatted_field(fp, pkg, "Description");
 952         pkg_formatted_field(fp, pkg, "Installed-Time");
 953         pkg_formatted_field(fp, pkg, "Tags");
 954         fputs("\n", fp);
 955 }
 956
 957 void pkg_print_status(pkg_t * pkg, FILE * file)
 958 {
 959         if (pkg == NULL) {
 960                 return;
 961         }
 962
 963         pkg_formatted_field(file, pkg, "Package");
 964         pkg_formatted_field(file, pkg, "ABIVersion");
 965         pkg_formatted_field(file, pkg, "Version");
 966         pkg_formatted_field(file, pkg, "Depends");
 967         pkg_formatted_field(file, pkg, "Recommends");
 968         pkg_formatted_field(file, pkg, "Suggests");
 969         pkg_formatted_field(file, pkg, "Provides");
 970         pkg_formatted_field(file, pkg, "Replaces");
 971         pkg_formatted_field(file, pkg, "Conflicts");
 972         pkg_formatted_field(file, pkg, "Status");
 973         pkg_formatted_field(file, pkg, "Essential");
 974         pkg_formatted_field(file, pkg, "Architecture");
 975         pkg_formatted_field(file, pkg, "Conffiles");
 976         pkg_formatted_field(file, pkg, "Installed-Time");
 977         pkg_formatted_field(file, pkg, "Auto-Installed");
 978         pkg_formatted_field(file, pkg, "Alternatives");
 979         fputs("\n", file);
 980 }
 981
 982 /*
 983  * libdpkg - Debian packaging suite library routines
 984  * vercmp.c - comparison of version numbers
 985  *
 986  * Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk>
 987  */
 988
 989 /* assume ascii; warning: evaluates x multiple times! */
 990 #define order(x) ((x) == '~' ? -1 \
 991                 : isdigit((x)) ? 0 \
 992                 : !(x) ? 0 \
 993                 : isalpha((x)) ? (x) \
 994                 : (x) + 256)
 995
 996 static int verrevcmp(const char *val, const char *ref)
 997 {
 998         if (!val)
 999                 val = "";
1000         if (!ref)
1001                 ref = "";
1002
1003         while (*val || *ref) {
1004                 int first_diff = 0;
1005
1006                 while ((*val && !isdigit(*val)) || (*ref && !isdigit(*ref))) {
1007                         int vc = order(*val), rc = order(*ref);
1008                         if (vc != rc)
1009                                 return vc - rc;
1010                         val++;
1011                         ref++;
1012                 }
1013
1014                 while (*val == '0')
1015                         val++;
1016                 while (*ref == '0')
1017                         ref++;
1018                 while (isdigit(*val) && isdigit(*ref)) {
1019                         if (!first_diff)
1020                                 first_diff = *val - *ref;
1021                         val++;
1022                         ref++;
1023                 }
1024                 if (isdigit(*val))
1025                         return 1;
1026                 if (isdigit(*ref))
1027                         return -1;
1028                 if (first_diff)
1029                         return first_diff;
1030         }
1031         return 0;
1032 }
1033
1034 int pkg_compare_versions(const pkg_t * pkg, const pkg_t * ref_pkg)
1035 {
1036         unsigned int epoch1 = (unsigned int) pkg_get_int(pkg, PKG_EPOCH);
1037         unsigned int epoch2 = (unsigned int) pkg_get_int(ref_pkg, PKG_EPOCH);
1038         char *revision1 = pkg_get_string(pkg, PKG_REVISION);
1039         char *revision2 = pkg_get_string(ref_pkg, PKG_REVISION);
1040         const char *version1 = pkg_get_string(pkg, PKG_VERSION);
1041         const char *version2 = pkg_get_string(ref_pkg, PKG_VERSION);
1042         int r;
1043
1044         if (epoch1 > epoch2) {
1045                 return 1;
1046         }
1047
1048         if (epoch1 < epoch2) {
1049                 return -1;
1050         }
1051
1052         r = verrevcmp(version1, version2);
1053         if (r) {
1054                 return r;
1055         }
1056
1057         r = verrevcmp(revision1, revision2);
1058         if (r) {
1059                 return r;
1060         }
1061
1062         return r;
1063 }
1064
1065 int pkg_version_satisfied(pkg_t * it, pkg_t * ref, const char *op)
1066 {
1067         int r;
1068
1069         r = pkg_compare_versions(it, ref);
1070
1071         if (strcmp(op, "<=") == 0 || strcmp(op, "<") == 0) {
1072                 return r <= 0;
1073         }
1074
1075         if (strcmp(op, ">=") == 0 || strcmp(op, ">") == 0) {
1076                 return r >= 0;
1077         }
1078
1079         if (strcmp(op, "<<") == 0) {
1080                 return r < 0;
1081         }
1082
1083         if (strcmp(op, ">>") == 0) {
1084                 return r > 0;
1085         }
1086
1087         if (strcmp(op, "=") == 0) {
1088                 return r == 0;
1089         }
1090
1091         opkg_msg(ERROR, "Unknown operator: %s.\n", op);
1092         return 0;
1093 }
1094
1095 int pkg_name_version_and_architecture_compare(const void *p1, const void *p2)
1096 {
1097         const pkg_t * a = *(const pkg_t **)p1;
1098         const pkg_t * b = *(const pkg_t **)p2;
1099         int namecmp;
1100         int vercmp;
1101         int arch_prio1, arch_prio2;
1102         if (!a->name || !b->name) {
1103                 opkg_msg(ERROR, "Internal error: a->name=%p, b->name=%p.\n",
1104                          a->name, b->name);
1105                 return 0;
1106         }
1107
1108         namecmp = strcmp(a->name, b->name);
1109         if (namecmp)
1110                 return namecmp;
1111         vercmp = pkg_compare_versions(a, b);
1112         if (vercmp)
1113                 return vercmp;
1114         arch_prio1 = pkg_get_arch_priority(a);
1115         arch_prio2 = pkg_get_arch_priority(b);
1116         if (!arch_prio1 || !arch_prio2) {
1117                 opkg_msg(ERROR,
1118                          "Internal error: a->arch_priority=%i b->arch_priority=%i.\n",
1119                          arch_prio1, arch_prio2);
1120                 return 0;
1121         }
1122         if (arch_prio1 > arch_prio2)
1123                 return 1;
1124         if (arch_prio1 < arch_prio2)
1125                 return -1;
1126         return 0;
1127 }
1128
1129 int abstract_pkg_name_compare(const void *p1, const void *p2)
1130 {
1131         const abstract_pkg_t *a = *(const abstract_pkg_t **)p1;
1132         const abstract_pkg_t *b = *(const abstract_pkg_t **)p2;
1133         if (!a->name || !b->name) {
1134                 opkg_msg(ERROR, "Internal error: a->name=%p b->name=%p.\n",
1135                          a->name, b->name);
1136                 return 0;
1137         }
1138         return strcmp(a->name, b->name);
1139 }
1140
1141 char *pkg_version_str_alloc(pkg_t * pkg)
1142 {
1143         const char *verstr;
1144         char *version, *revptr;
1145         unsigned int epoch = (unsigned int) pkg_get_int(pkg, PKG_EPOCH);
1146
1147         revptr = pkg_get_string(pkg, PKG_REVISION);
1148         verstr = pkg_get_string(pkg, PKG_VERSION);
1149
1150         if (epoch) {
1151                 if (revptr)
1152                         sprintf_alloc(&version, "%d:%s-%s",
1153                                       epoch, verstr, revptr);
1154                 else
1155                         sprintf_alloc(&version, "%d:%s",
1156                                       epoch, verstr);
1157         } else {
1158                 if (revptr)
1159                         sprintf_alloc(&version, "%s-%s",
1160                                       verstr, revptr);
1161                 else
1162                         version = xstrdup(verstr);
1163         }
1164
1165         return version;
1166 }
1167
1168 /*
1169  * XXX: this should be broken into two functions
1170  */
1171 str_list_t *pkg_get_installed_files(pkg_t * pkg)
1172 {
1173         int err, fd;
1174         char *list_file_name = NULL;
1175         FILE *list_file = NULL;
1176         char *line;
1177         char *installed_file_name;
1178         unsigned int rootdirlen = 0;
1179         int list_from_package;
1180         const char *local_filename;
1181
1182         pkg->installed_files_ref_cnt++;
1183
1184         if (pkg->installed_files) {
1185                 return pkg->installed_files;
1186         }
1187
1188         pkg->installed_files = str_list_alloc();
1189
1190         /*
1191          * For installed packages, look at the package.list file in the database.
1192          * For uninstalled packages, get the file list directly from the package.
1193          */
1194         if (pkg->state_status == SS_NOT_INSTALLED || pkg->dest == NULL)
1195                 list_from_package = 1;
1196         else
1197                 list_from_package = 0;
1198
1199         if (list_from_package) {
1200                 local_filename = pkg_get_string(pkg, PKG_LOCAL_FILENAME);
1201
1202                 if (!local_filename) {
1203                         return pkg->installed_files;
1204                 }
1205                 /* XXX: CLEANUP: Maybe rewrite this to avoid using a temporary
1206                    file. In other words, change deb_extract so that it can
1207                    simply return the file list as a char *[] rather than
1208                    insisting on writing it to a FILE * as it does now. */
1209                 sprintf_alloc(&list_file_name, "%s/%s.list.XXXXXX",
1210                               conf->tmp_dir, pkg->name);
1211                 fd = mkstemp(list_file_name);
1212                 if (fd == -1) {
1213                         opkg_perror(ERROR, "Failed to make temp file %s.",
1214                                     list_file_name);
1215                         free(list_file_name);
1216                         return pkg->installed_files;
1217                 }
1218                 list_file = fdopen(fd, "r+");
1219                 if (list_file == NULL) {
1220                         opkg_perror(ERROR, "Failed to fdopen temp file %s.",
1221                                     list_file_name);
1222                         close(fd);
1223                         unlink(list_file_name);
1224                         free(list_file_name);
1225                         return pkg->installed_files;
1226                 }
1227                 err = pkg_extract_data_file_names_to_stream(pkg, list_file);
1228                 if (err) {
1229                         opkg_msg(ERROR, "Error extracting file list from %s.\n",
1230                                  local_filename);
1231                         fclose(list_file);
1232                         unlink(list_file_name);
1233                         free(list_file_name);
1234                         str_list_deinit(pkg->installed_files);
1235                         pkg->installed_files = NULL;
1236                         return NULL;
1237                 }
1238                 rewind(list_file);
1239         } else {
1240                 sprintf_alloc(&list_file_name, "%s/%s.list",
1241                               pkg->dest->info_dir, pkg->name);
1242                 list_file = fopen(list_file_name, "r");
1243                 if (list_file == NULL) {
1244                         opkg_perror(ERROR, "Failed to open %s", list_file_name);
1245                         free(list_file_name);
1246                         return pkg->installed_files;
1247                 }
1248                 free(list_file_name);
1249         }
1250
1251         if (conf->offline_root)
1252                 rootdirlen = strlen(conf->offline_root);
1253
1254         while (1) {
1255                 char *file_name;
1256
1257                 line = file_read_line_alloc(list_file);
1258                 if (line == NULL) {
1259                         break;
1260                 }
1261                 file_name = line;
1262
1263                 if (list_from_package) {
1264                         if (*file_name == '.') {
1265                                 file_name++;
1266                         }
1267                         if (*file_name == '/') {
1268                                 file_name++;
1269                         }
1270                         sprintf_alloc(&installed_file_name, "%s%s",
1271                                       pkg->dest->root_dir, file_name);
1272                 } else {
1273                         if (conf->offline_root &&
1274                             strncmp(conf->offline_root, file_name,
1275                                     rootdirlen)) {
1276                                 sprintf_alloc(&installed_file_name, "%s%s",
1277                                               conf->offline_root, file_name);
1278                         } else {
1279                                 // already contains root_dir as header -> ABSOLUTE
1280                                 sprintf_alloc(&installed_file_name, "%s",
1281                                               file_name);
1282                         }
1283                 }
1284                 str_list_append(pkg->installed_files, installed_file_name);
1285                 free(installed_file_name);
1286                 free(line);
1287         }
1288
1289         fclose(list_file);
1290
1291         if (list_from_package) {
1292                 unlink(list_file_name);
1293                 free(list_file_name);
1294         }
1295
1296         return pkg->installed_files;
1297 }
1298
1299 /* XXX: CLEANUP: This function and it's counterpart,
1300    (pkg_get_installed_files), do not match our init/deinit naming
1301    convention. Nor the alloc/free convention. But, then again, neither
1302    of these conventions currrently fit the way these two functions
1303    work. */
1304 void pkg_free_installed_files(pkg_t * pkg)
1305 {
1306         pkg->installed_files_ref_cnt--;
1307
1308         if (pkg->installed_files_ref_cnt > 0)
1309                 return;
1310
1311         if (pkg->installed_files) {
1312                 str_list_purge(pkg->installed_files);
1313         }
1314
1315         pkg->installed_files = NULL;
1316 }
1317
1318 void pkg_remove_installed_files_list(pkg_t * pkg)
1319 {
1320         char *list_file_name;
1321
1322         sprintf_alloc(&list_file_name, "%s/%s.list",
1323                       pkg->dest->info_dir, pkg->name);
1324
1325         if (!conf->noaction)
1326                 (void)unlink(list_file_name);
1327
1328         free(list_file_name);
1329 }
1330
1331 conffile_t *pkg_get_conffile(pkg_t * pkg, const char *file_name)
1332 {
1333         conffile_list_elt_t *iter;
1334         conffile_list_t *cl;
1335         conffile_t *conffile;
1336
1337         if (pkg == NULL) {
1338                 return NULL;
1339         }
1340
1341         cl = pkg_get_ptr(pkg, PKG_CONFFILES);
1342
1343         for (iter = cl ? nv_pair_list_first(cl) : NULL; iter;
1344              iter = nv_pair_list_next(cl, iter)) {
1345                 conffile = (conffile_t *) iter->data;
1346
1347                 if (strcmp(conffile->name, file_name) == 0) {
1348                         return conffile;
1349                 }
1350         }
1351
1352         return NULL;
1353 }
1354
1355 int pkg_run_script(pkg_t * pkg, const char *script, const char *args)
1356 {
1357         int err;
1358         char *path;
1359         char *cmd;
1360         char *tmp_unpack_dir;
1361
1362         if (conf->noaction)
1363                 return 0;
1364
1365         /* XXX: FEATURE: When conf->offline_root is set, we should run the
1366            maintainer script within a chroot environment. */
1367         if (conf->offline_root && !conf->force_postinstall) {
1368                 opkg_msg(INFO, "Offline root mode: not running %s.%s.\n",
1369                          pkg->name, script);
1370                 return 0;
1371         }
1372
1373         /* Installed packages have scripts in pkg->dest->info_dir, uninstalled packages
1374            have scripts in tmp_unpack_dir. */
1375         if (pkg->state_status == SS_INSTALLED
1376             || pkg->state_status == SS_UNPACKED
1377             || pkg->state_status == SS_HALF_INSTALLED) {
1378                 if (pkg->dest == NULL) {
1379                         opkg_msg(ERROR, "Internal error: %s has a NULL dest.\n",
1380                                  pkg->name);
1381                         return -1;
1382                 }
1383                 sprintf_alloc(&path, "%s/%s.%s", pkg->dest->info_dir, pkg->name,
1384                               script);
1385         } else {
1386                 tmp_unpack_dir = pkg_get_string(pkg, PKG_TMP_UNPACK_DIR);
1387                 if (tmp_unpack_dir == NULL) {
1388                         opkg_msg(ERROR,
1389                                  "Internal error: %s has a NULL tmp_unpack_dir.\n",
1390                                  pkg->name);
1391                         return -1;
1392                 }
1393                 sprintf_alloc(&path, "%s/%s", tmp_unpack_dir, script);
1394         }
1395
1396         opkg_msg(INFO, "Running script %s.\n", path);
1397
1398         setenv("PKG_ROOT",
1399                pkg->dest ? pkg->dest->root_dir : conf->default_dest->root_dir,
1400                1);
1401
1402         if (pkg->is_upgrade)
1403                 setenv("PKG_UPGRADE", "1", 1);
1404         else
1405                 setenv("PKG_UPGRADE", "0", 1);
1406
1407         if (!file_exists(path)) {
1408                 free(path);
1409                 return 0;
1410         }
1411
1412         sprintf_alloc(&cmd, "%s %s", path, args);
1413         free(path);
1414         {
1415                 const char *argv[] = { "/bin/sh", "-c", cmd, NULL };
1416                 err = xsystem(argv);
1417         }
1418         free(cmd);
1419
1420         if (err) {
1421                 opkg_msg(ERROR,
1422                          "package \"%s\" %s script returned status %d.\n",
1423                          pkg->name, script, err);
1424                 return err;
1425         }
1426
1427         return 0;
1428 }
1429
1430 int pkg_arch_supported(pkg_t * pkg)
1431 {
1432         nv_pair_list_elt_t *l;
1433         char *architecture = pkg_get_architecture(pkg);
1434
1435         if (!architecture)
1436                 return 1;
1437
1438         list_for_each_entry(l, &conf->arch_list.head, node) {
1439                 nv_pair_t *nv = (nv_pair_t *) l->data;
1440                 if (strcmp(nv->name, architecture) == 0) {
1441                         opkg_msg(DEBUG,
1442                                  "Arch %s (priority %s) supported for pkg %s.\n",
1443                                  nv->name, nv->value, pkg->name);
1444                         return 1;
1445                 }
1446         }
1447
1448         opkg_msg(DEBUG, "Arch %s unsupported for pkg %s.\n",
1449                  architecture, pkg->name);
1450         return 0;
1451 }
1452
1453 void pkg_info_preinstall_check(void)
1454 {
1455         int i;
1456         pkg_vec_t *installed_pkgs = pkg_vec_alloc();
1457
1458         /* update the file owner data structure */
1459         opkg_msg(INFO, "Updating file owner list.\n");
1460         pkg_hash_fetch_all_installed(installed_pkgs);
1461         for (i = 0; i < installed_pkgs->len; i++) {
1462                 pkg_t *pkg = installed_pkgs->pkgs[i];
1463                 str_list_t *installed_files = pkg_get_installed_files(pkg);     /* this causes installed_files to be cached */
1464                 str_list_elt_t *iter, *niter;
1465                 if (installed_files == NULL) {
1466                         opkg_msg(ERROR, "Failed to determine installed "
1467                                  "files for pkg %s.\n", pkg->name);
1468                         break;
1469                 }
1470                 for (iter = str_list_first(installed_files), niter =
1471                      str_list_next(installed_files, iter); iter;
1472                      iter = niter, niter =
1473                      str_list_next(installed_files, iter)) {
1474                         char *installed_file = (char *)iter->data;
1475                         file_hash_set_file_owner(installed_file, pkg);
1476                 }
1477                 pkg_free_installed_files(pkg);
1478         }
1479         pkg_vec_free(installed_pkgs);
1480 }
1481
1482 struct pkg_write_filelist_data {
1483         pkg_t *pkg;
1484         FILE *stream;
1485 };
1486
1487 static void
1488 pkg_write_filelist_helper(const char *key, void *entry_, void *data_)
1489 {
1490         struct pkg_write_filelist_data *data = data_;
1491         pkg_t *entry = entry_;
1492         if (entry == data->pkg) {
1493                 fprintf(data->stream, "%s\n", key);
1494         }
1495 }
1496
1497 int pkg_write_filelist(pkg_t * pkg)
1498 {
1499         struct pkg_write_filelist_data data;
1500         char *list_file_name;
1501
1502         sprintf_alloc(&list_file_name, "%s/%s.list",
1503                       pkg->dest->info_dir, pkg->name);
1504
1505         opkg_msg(INFO, "Creating %s file for pkg %s.\n",
1506                  list_file_name, pkg->name);
1507
1508         data.stream = fopen(list_file_name, "w");
1509         if (!data.stream) {
1510                 opkg_perror(ERROR, "Failed to open %s", list_file_name);
1511                 free(list_file_name);
1512                 return -1;
1513         }
1514
1515         data.pkg = pkg;
1516         hash_table_foreach(&conf->file_hash, pkg_write_filelist_helper, &data);
1517         fclose(data.stream);
1518         free(list_file_name);
1519
1520         pkg->state_flag &= ~SF_FILELIST_CHANGED;
1521
1522         return 0;
1523 }
1524
1525 int pkg_write_changed_filelists(void)
1526 {
1527         pkg_vec_t *installed_pkgs = pkg_vec_alloc();
1528         int i, err, ret = 0;
1529
1530         if (conf->noaction)
1531                 return 0;
1532
1533         opkg_msg(INFO, "Saving changed filelists.\n");
1534
1535         pkg_hash_fetch_all_installed(installed_pkgs);
1536         for (i = 0; i < installed_pkgs->len; i++) {
1537                 pkg_t *pkg = installed_pkgs->pkgs[i];
1538                 if (pkg->state_flag & SF_FILELIST_CHANGED) {
1539                         err = pkg_write_filelist(pkg);
1540                         if (err)
1541                                 ret = -1;
1542                 }
1543         }
1544
1545         pkg_vec_free(installed_pkgs);
1546
1547         return ret;
1548 }