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Sources/opkg-lede/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 
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 == '')
1007                         val++;
1008                 while (*ref == '')
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", "", 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 }
1541 

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