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