2 * Mini dpkg implementation for busybox.
3 * This is not meant as a replacemnt for dpkg
5 * Copyright (C) 2001 by Glenn McGrath
7 * Started life as a busybox implementation of udpkg
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Library General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * Known difference between busybox dpkg and the official dpkg that i dont
26 * consider important, its worth keeping a note of differences anyway, just to
27 * make it easier to maintain.
28 * - The first value for the Confflile: field isnt placed on a new line.
29 * - The <package>.control file is extracted and kept in the info dir.
30 * - When installing a package the Status: field is placed at the end of the
31 * section, rather than just after the Package: field.
32 * - Packages with previously unknown status are inserted at the begining of
35 * Bugs that need to be fixed
36 * - (unknown, please let me know when you find any)
46 /* NOTE: If you vary HASH_PRIME sizes be aware,
47 * 1) Tweaking these will have a big effect on how much memory this program uses.
48 * 2) For computational efficiency these hash tables should be at least 20%
49 * larger than the maximum number of elements stored in it.
50 * 3) All _HASH_PRIME's must be a prime number or chaos is assured, if your looking
51 * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt
52 * 4) If you go bigger than 15 bits you may get into trouble (untested) as its
53 * sometimes cast to an unsigned int, if you go to 16 bit you will overlap
54 * int's and chaos is assured, 16381 is the max prime for 14 bit field
57 /* NAME_HASH_PRIME, Stores package names and versions,
58 * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME,
59 * as there a lot of duplicate version numbers */
60 #define NAME_HASH_PRIME 16381
61 char *name_hashtable[NAME_HASH_PRIME + 1];
63 /* PACKAGE_HASH_PRIME, Maximum number of unique packages,
64 * It must not be smaller than STATUS_HASH_PRIME,
65 * Currently only packages from status_hashtable are stored in here, but in
66 * future this may be used to store packages not only from a status file,
67 * but an available_hashtable, and even multiple packages files.
68 * Package can be stored more than once if they have different versions.
69 * e.g. The same package may have different versions in the status file
70 * and available file */
71 #define PACKAGE_HASH_PRIME 10007
72 typedef struct edge_s {
73 unsigned int operator:3;
76 unsigned int version:14;
79 typedef struct common_node_s {
81 unsigned int version:14;
82 unsigned int num_of_edges:14;
85 common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
87 /* Currently it doesnt store packages that have state-status of not-installed
88 * So it only really has to be the size of the maximum number of packages
89 * likely to be installed at any one time, so there is a bit of leaway here */
90 #define STATUS_HASH_PRIME 8191
91 typedef struct status_node_s {
92 unsigned int package:14; /* has to fit PACKAGE_HASH_PRIME */
93 unsigned int status:14; /* has to fit STATUS_HASH_PRIME */
95 status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
97 /* Even numbers are for 'extras', like ored dependecies or null */
100 EDGE_PRE_DEPENDS = 1,
101 EDGE_OR_PRE_DEPENDS = 2,
108 EDGE_RECOMMENDS = 13,
125 dpkg_opt_configure = 8,
126 dpkg_opt_install = 16,
127 dpkg_opt_package_name = 32,
128 dpkg_opt_filename = 64,
129 dpkg_opt_list_installed = 128,
130 dpkg_opt_force_ignore_depends = 256
133 typedef struct deb_file_s {
136 unsigned int package:14;
140 void make_hash(const char *key, unsigned int *start, unsigned int *decrement, const int hash_prime)
142 unsigned long int hash_num = key[0];
143 int len = strlen(key);
146 /* Maybe i should have uses a "proper" hashing algorithm here instead
147 * of making one up myself, seems to be working ok though. */
148 for(i = 1; i < len; i++) {
149 /* shifts the ascii based value and adds it to previous value
150 * shift amount is mod 24 because long int is 32 bit and data
151 * to be shifted is 8, dont want to shift data to where it has
153 hash_num += ((key[i] + key[i-1]) << ((key[i] * i) % 24));
155 *start = (unsigned int) hash_num % hash_prime;
156 *decrement = (unsigned int) 1 + (hash_num % (hash_prime - 1));
159 /* this adds the key to the hash table */
160 int search_name_hashtable(const char *key)
162 unsigned int probe_address = 0;
163 unsigned int probe_decrement = 0;
165 make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME);
166 while(name_hashtable[probe_address] != NULL) {
167 if (strcmp(name_hashtable[probe_address], key) == 0) {
168 return(probe_address);
170 probe_address -= probe_decrement;
171 if ((int)probe_address < 0) {
172 probe_address += NAME_HASH_PRIME;
176 name_hashtable[probe_address] = xstrdup(key);
178 return(probe_address);
181 /* this DOESNT add the key to the hashtable
182 * TODO make it consistent with search_name_hashtable
184 unsigned int search_status_hashtable(const char *key)
186 unsigned int probe_address = 0;
187 unsigned int probe_decrement = 0;
189 make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME);
190 while(status_hashtable[probe_address] != NULL) {
191 if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) {
194 probe_address -= probe_decrement;
195 if ((int)probe_address < 0) {
196 probe_address += STATUS_HASH_PRIME;
200 return(probe_address);
203 /* Need to rethink version comparison, maybe the official dpkg has something i can use ? */
204 int version_compare_part(const char *version1, const char *version2)
206 int upstream_len1 = 0;
207 int upstream_len2 = 0;
216 if (version1 == NULL) {
217 version1 = xstrdup("");
219 if (version2 != NULL) {
220 version2 = xstrdup("");
222 upstream_len1 = strlen(version1);
223 upstream_len2 = strlen(version2);
225 while ((len1 < upstream_len1) || (len2 < upstream_len2)) {
226 /* Compare non-digit section */
227 tmp_int = strcspn(&version1[len1], "0123456789");
228 name1_char = xstrndup(&version1[len1], tmp_int);
230 tmp_int = strcspn(&version2[len2], "0123456789");
231 name2_char = xstrndup(&version2[len2], tmp_int);
233 tmp_int = strcmp(name1_char, name2_char);
241 tmp_int = strspn(&version1[len1], "0123456789");
242 name1_char = xstrndup(&version1[len1], tmp_int);
244 tmp_int = strspn(&version2[len2], "0123456789");
245 name2_char = xstrndup(&version2[len2], tmp_int);
247 ver_num1 = atoi(name1_char);
248 ver_num2 = atoi(name2_char);
251 if (ver_num1 < ver_num2) {
254 else if (ver_num1 > ver_num2) {
261 /* if ver1 < ver2 return -1,
262 * if ver1 = ver2 return 0,
263 * if ver1 > ver2 return 1,
265 int version_compare(const unsigned int ver1, const unsigned int ver2)
267 char *ch_ver1 = name_hashtable[ver1];
268 char *ch_ver2 = name_hashtable[ver2];
271 char *deb_ver1, *deb_ver2;
272 char *ver1_ptr, *ver2_ptr;
278 if (ch_ver1[1] == ':') {
280 ver1_ptr = strchr(ch_ver1, ':') + 1;
285 if (ch_ver2[1] == ':') {
287 ver2_ptr = strchr(ch_ver2, ':') + 1;
292 if (epoch1 < epoch2) {
295 else if (epoch1 > epoch2) {
299 /* Compare upstream version */
300 upstream_ver1 = xstrdup(ver1_ptr);
301 upstream_ver2 = xstrdup(ver2_ptr);
303 /* Chop off debian version, and store for later use */
304 deb_ver1 = strrchr(upstream_ver1, '-');
305 deb_ver2 = strrchr(upstream_ver2, '-');
314 result = version_compare_part(upstream_ver1, upstream_ver2);
323 /* Compare debian versions */
324 return(version_compare_part(deb_ver1, deb_ver2));
327 int test_version(const unsigned int version1, const unsigned int version2, const unsigned int operator)
329 const int version_result = version_compare(version1, version2);
334 if (version_result == 0) {
339 if (version_result < 0) {
343 case (VER_LESS_EQUAL):
344 if (version_result <= 0) {
349 if (version_result > 0) {
353 case (VER_MORE_EQUAL):
354 if (version_result >= 0) {
363 int search_package_hashtable(const unsigned int name, const unsigned int version, const unsigned int operator)
365 unsigned int probe_address = 0;
366 unsigned int probe_decrement = 0;
368 make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME);
369 while(package_hashtable[probe_address] != NULL) {
370 if (package_hashtable[probe_address]->name == name) {
371 if (operator == VER_ANY) {
372 return(probe_address);
374 if (test_version(package_hashtable[probe_address]->version, version, operator)) {
375 return(probe_address);
378 probe_address -= probe_decrement;
379 if ((int)probe_address < 0) {
380 probe_address += PACKAGE_HASH_PRIME;
383 return(probe_address);
387 * Create one new node and one new edge for every dependency.
389 void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned int edge_type)
391 char *line = xstrdup(whole_line);
393 char *line_ptr1 = NULL;
394 char *line_ptr2 = NULL;
402 field = strtok_r(line, ",", &line_ptr1);
404 line2 = xstrdup(field);
405 field2 = strtok_r(line2, "|", &line_ptr2);
406 if ((edge_type == EDGE_DEPENDS) && (strcmp(field, field2) != 0)) {
407 type = EDGE_OR_DEPENDS;
409 else if ((edge_type == EDGE_PRE_DEPENDS) && (strcmp(field, field2) != 0)) {
410 type = EDGE_OR_PRE_DEPENDS;
416 edge = (edge_t *) xmalloc(sizeof(edge_t));
419 /* Skip any extra leading spaces */
420 field2 += strspn(field2, " ");
422 /* Get dependency version info */
423 version = strchr(field2, '(');
424 if (version == NULL) {
425 edge->operator = VER_ANY;
426 /* Get the versions hash number, adding it if the number isnt already in there */
427 edge->version = search_name_hashtable("ANY");
429 /* Skip leading ' ' or '(' */
430 version += strspn(field2, " ");
431 version += strspn(version, "(");
432 /* Calculate length of any operator charactors */
433 offset_ch = strspn(version, "<=>");
434 /* Determine operator */
436 if (strncmp(version, "=", offset_ch) == 0) {
437 edge->operator = VER_EQUAL;
439 else if (strncmp(version, "<<", offset_ch) == 0) {
440 edge->operator = VER_LESS;
442 else if (strncmp(version, "<=", offset_ch) == 0) {
443 edge->operator = VER_LESS_EQUAL;
445 else if (strncmp(version, ">>", offset_ch) == 0) {
446 edge->operator = VER_MORE;
448 else if (strncmp(version, ">=", offset_ch) == 0) {
449 edge->operator = VER_MORE_EQUAL;
451 error_msg_and_die("Illegal operator\n");
454 /* skip to start of version numbers */
455 version += offset_ch;
456 version += strspn(version, " ");
458 /* Truncate version at trailing ' ' or ')' */
459 version[strcspn(version, " )")] = '\0';
460 /* Get the versions hash number, adding it if the number isnt already in there */
461 edge->version = search_name_hashtable(version);
464 /* Get the dependency name */
465 field2[strcspn(field2, " (")] = '\0';
466 edge->name = search_name_hashtable(field2);
468 /* link the new edge to the current node */
469 parent_node->num_of_edges++;
470 parent_node->edge = xrealloc(parent_node->edge, sizeof(edge_t) * (parent_node->num_of_edges + 1));
471 parent_node->edge[parent_node->num_of_edges - 1] = edge;
472 } while ((field2 = strtok_r(NULL, "|", &line_ptr2)) != NULL);
474 } while ((field = strtok_r(NULL, ",", &line_ptr1)) != NULL);
480 void free_package(common_node_t *node)
484 for (i = 0; i < node->num_of_edges; i++) {
485 if (node->edge[i] != NULL) {
489 if (node->edge != NULL) {
498 unsigned int fill_package_struct(char *control_buffer)
500 common_node_t *new_node = (common_node_t *) xcalloc(1, sizeof(common_node_t));
507 int seperator_offset;
509 int buffer_length = strlen(control_buffer);
511 new_node->version = search_name_hashtable("unknown");
512 while (field_start < buffer_length) {
513 field = read_package_field(&control_buffer[field_start]);
515 /* Setup start point for next field */
516 field_length = strlen(field);
517 field_start += (field_length + 1);
519 seperator_offset = strcspn(field, ":");
520 if (seperator_offset == 0) {
524 field_name = xstrndup(field, seperator_offset);
525 field_value = field + seperator_offset + 1;
526 field_value += strspn(field_value, " \n\t");
528 /* Should be able to replace this strlen with pointer arithmatic */
529 if (strlen(field_value) == 0) {
530 goto fill_package_struct_cleanup; // Oh no, the dreaded goto statement !!
533 if (strcmp(field_name, "Package") == 0) {
534 new_node->name = search_name_hashtable(field_value);
536 else if (strcmp(field_name, "Version") == 0) {
537 new_node->version = search_name_hashtable(field_value);
539 else if (strcmp(field_name, "Pre-Depends") == 0) {
540 add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS);
542 else if (strcmp(field_name, "Depends") == 0) {
543 add_split_dependencies(new_node, field_value, EDGE_DEPENDS);
545 else if (strcmp(field_name, "Replaces") == 0) {
546 add_split_dependencies(new_node, field_value, EDGE_REPLACES);
548 else if (strcmp(field_name, "Provides") == 0) {
549 add_split_dependencies(new_node, field_value, EDGE_PROVIDES);
551 else if (strcmp(field_name, "Conflicts") == 0) {
552 add_split_dependencies(new_node, field_value, EDGE_CONFLICTS);
554 else if (strcmp(field_name, "Suggests") == 0) {
555 add_split_dependencies(new_node, field_value, EDGE_SUGGESTS);
557 else if (strcmp(field_name, "Recommends") == 0) {
558 add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS);
560 else if (strcmp(field_name, "Enhances") == 0) {
561 add_split_dependencies(new_node, field_value, EDGE_ENHANCES);
563 fill_package_struct_cleanup:
567 if (new_node->version == search_name_hashtable("unknown")) {
568 free_package(new_node);
571 num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL);
572 if (package_hashtable[num] == NULL) {
573 package_hashtable[num] = new_node;
575 free_package(new_node);
580 /* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
581 unsigned int get_status(const unsigned int status_node, const int num)
583 char *status_string = name_hashtable[status_hashtable[status_node]->status];
584 char *state_sub_string;
585 unsigned int state_sub_num;
589 /* set tmp_string to point to the start of the word number */
590 for (i = 1; i < num; i++) {
591 /* skip past a word */
592 status_string += strcspn(status_string, " ");
593 /* skip past the seperating spaces */
594 status_string += strspn(status_string, " ");
596 len = strcspn(status_string, " \n\0");
597 state_sub_string = xstrndup(status_string, len);
598 state_sub_num = search_name_hashtable(state_sub_string);
599 free(state_sub_string);
600 return(state_sub_num);
603 void set_status(const unsigned int status_node_num, const char *new_value, const int position)
605 const unsigned int new_value_len = strlen(new_value);
606 const unsigned int new_value_num = search_name_hashtable(new_value);
607 unsigned int want = get_status(status_node_num, 1);
608 unsigned int flag = get_status(status_node_num, 2);
609 unsigned int status = get_status(status_node_num, 3);
610 int want_len = strlen(name_hashtable[want]);
611 int flag_len = strlen(name_hashtable[flag]);
612 int status_len = strlen(name_hashtable[status]);
617 want = new_value_num;
618 want_len = new_value_len;
621 flag = new_value_num;
622 flag_len = new_value_len;
625 status = new_value_num;
626 status_len = new_value_len;
629 error_msg_and_die("DEBUG ONLY: this shouldnt happen");
632 new_status = (char *) xmalloc(want_len + flag_len + status_len + 3);
633 sprintf(new_status, "%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]);
634 status_hashtable[status_node_num]->status = search_name_hashtable(new_status);
638 void index_status_file(const char *filename)
641 char *control_buffer;
643 status_node_t *status_node = NULL;
644 unsigned int status_num;
646 status_file = xfopen(filename, "r");
647 while ((control_buffer = fgets_str(status_file, "\n\n")) != NULL) {
648 const unsigned int package_num = fill_package_struct(control_buffer);
649 if (package_num != -1) {
650 status_node = xmalloc(sizeof(status_node_t));
651 /* fill_package_struct doesnt handle the status field */
652 status_line = strstr(control_buffer, "Status:");
653 if (status_line != NULL) {
655 status_line += strspn(status_line, " \n\t");
656 status_line = xstrndup(status_line, strcspn(status_line, "\n\0"));
657 status_node->status = search_name_hashtable(status_line);
660 status_node->package = package_num;
661 status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]);
662 status_hashtable[status_num] = status_node;
664 free(control_buffer);
671 char *get_depends_field(common_node_t *package, const int depends_type)
673 char *depends = NULL;
674 char *old_sep = (char *)xcalloc(1, 3);
675 char *new_sep = (char *)xcalloc(1, 3);
681 for (i = 0; i < package->num_of_edges; i++) {
682 if ((package->edge[i]->type == EDGE_OR_PRE_DEPENDS) ||
683 (package->edge[i]->type == EDGE_OR_DEPENDS)) {
686 if ((package->edge[i]->type == depends_type) ||
687 (package->edge[i]->type == depends_type + 1)) {
688 /* Check if its the first time through */
690 depends_size = 8 + strlen(name_hashtable[package->edge[i]->name])
691 + strlen(name_hashtable[package->edge[i]->version]);
692 line_size += depends_size;
693 depends = (char *) xrealloc(depends, line_size + 1);
695 /* Check to see if this dependency is the type we are looking for
696 * +1 to check for 'extra' types, e.g. ored dependecies */
697 strcpy(old_sep, new_sep);
698 if (package->edge[i]->type == depends_type) {
699 strcpy(new_sep, ", ");
701 else if (package->edge[i]->type == depends_type + 1) {
702 strcpy(new_sep, "| ");
705 if (depends_size == line_size) {
708 if ((strcmp(old_sep, "| ") == 0) && (strcmp(new_sep, "| ") == 0)) {
709 strcat(depends, " | ");
711 strcat(depends, ", ");
715 strcat(depends, name_hashtable[package->edge[i]->name]);
716 if (strcmp(name_hashtable[package->edge[i]->version], "NULL") != 0) {
717 if (package->edge[i]->operator == VER_EQUAL) {
718 strcat(depends, " (= ");
720 else if (package->edge[i]->operator == VER_LESS) {
721 strcat(depends, " (<< ");
723 else if (package->edge[i]->operator == VER_LESS_EQUAL) {
724 strcat(depends, " (<= ");
726 else if (package->edge[i]->operator == VER_MORE) {
727 strcat(depends, " (>> ");
729 else if (package->edge[i]->operator == VER_MORE_EQUAL) {
730 strcat(depends, " (>= ");
732 strcat(depends, " (");
734 strcat(depends, name_hashtable[package->edge[i]->version]);
735 strcat(depends, ")");
742 /* This could do with a cleanup */
743 void write_status_file(deb_file_t **deb_file)
745 FILE *old_status_file = xfopen("/var/lib/dpkg/status", "r");
746 FILE *new_status_file = xfopen("/var/lib/dpkg/status.udeb", "w");
748 char *status_from_file;
749 char *control_buffer = NULL;
759 /* Update previously known packages */
760 while ((control_buffer = fgets_str(old_status_file, "\n\n")) != NULL) {
761 tmp_string = strstr(control_buffer, "Package:") + 8;
762 tmp_string += strspn(tmp_string, " \n\t");
763 package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n\0"));
766 tmp_string = strstr(control_buffer, "Status:");
767 if (tmp_string != NULL) {
768 /* Seperate the status value from the control buffer */
770 tmp_string += strspn(tmp_string, " \n\t");
771 status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
773 status_from_file = NULL;
776 /* Find this package in the status hashtable */
777 status_num = search_status_hashtable(package_name);
778 if (status_hashtable[status_num] != NULL) {
779 const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status];
780 if (strcmp(status_from_file, status_from_hashtable) != 0) {
781 /* New status isnt exactly the same as old status */
782 const int state_status = get_status(status_num, 3);
783 if ((strcmp("installed", name_hashtable[state_status]) == 0) ||
784 (strcmp("unpacked", name_hashtable[state_status]) == 0)) {
785 /* We need to add the control file from the package */
787 while(deb_file[i] != NULL) {
788 if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) {
790 /* Write a status file entry with a modified status */
791 /* remove trailing \n's */
793 last_char = last_char_is(deb_file[i]->control_file, '\n');
800 fputs(deb_file[i]->control_file, new_status_file);
801 set_status(status_num, "ok", 2);
802 fprintf(new_status_file, "\nStatus: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
808 /* This is temperary, debugging only */
809 if (deb_file[i] == NULL) {
810 error_msg_and_die("ALERT: Couldnt find a control file, your status file may be broken, status may be incorrect for %s", package_name);
813 else if (strcmp("not-installed", name_hashtable[state_status]) == 0) {
814 /* Only write the Package, Status, Priority and Section lines */
815 fprintf(new_status_file, "Package: %s\n", package_name);
816 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
817 buffer_length = strlen(control_buffer);
818 while (field_start < buffer_length) {
819 field = read_package_field(&control_buffer[field_start]);
820 field_length = strlen(field);
821 field_start += (field_length + 1);
822 if (strncmp(field, "Priority:", 9) == 0) {
823 fprintf(new_status_file, "Priority:%s\n", field + 9);
825 if (strncmp(field, "Section:", 8) == 0) {
826 fprintf(new_status_file, "Section:%s\n", field + 8);
830 fputs("\n", new_status_file);
832 else if (strcmp("config-files", name_hashtable[state_status]) == 0) {
833 /* only change the status line */
834 buffer_length = strlen(control_buffer);
835 while (field_start < buffer_length) {
836 field = read_package_field(&control_buffer[field_start]);
837 /* Setup start point for next field */
838 field_length = strlen(field);
839 field_start += (field_length + 1);
840 if (strncmp(field, "Status:", 7) == 0) {
841 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
843 fprintf(new_status_file, "%s\n", field);
848 fputs("\n", new_status_file);
853 /* If the package from the status file wasnt handle above, do it now*/
854 if (write_flag == FALSE) {
855 fprintf(new_status_file, "%s\n\n", control_buffer);
858 if (status_from_file != NULL) {
859 free(status_from_file);
862 free(control_buffer);
864 /* Write any new packages */
865 for(i = 0; deb_file[i] != NULL; i++) {
866 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]);
867 if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) {
869 /* remove trailing \n's */
871 last_char = last_char_is(deb_file[i]->control_file, '\n');
879 fputs(deb_file[i]->control_file, new_status_file);
880 set_status(status_num, "ok", 2);
881 fprintf(new_status_file, "\nStatus: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
884 fclose(old_status_file);
885 fclose(new_status_file);
888 /* Create a seperate backfile to dpkg */
889 if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) {
890 struct stat stat_buf;
891 if (stat("/var/lib/dpkg/status", &stat_buf) == 0) {
892 error_msg_and_die("Couldnt create backup status file");
894 /* Its ok if renaming the status file fails becasue status
895 * file doesnt exist, maybe we are starting from scratch */
896 error_msg("No status file found, creating new one");
899 if (rename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status") == -1) {
900 error_msg_and_die("DANGER: Couldnt create status file, you need to manually repair your status file");
904 int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
906 int *conflicts = NULL;
907 int conflicts_num = 0;
911 unsigned int status_package_num;
915 /* Check for conflicts
916 * TODO: TEST if conflicts with other packages to be installed
918 * Add install packages and the packages they provide
919 * to the list of files to check conflicts for
922 /* Create array of package numbers to check against
923 * installed package for conflicts*/
924 while (deb_file[i] != NULL) {
925 const unsigned int package_num = deb_file[i]->package;
926 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
927 conflicts[conflicts_num] = package_num;
929 /* add provides to conflicts list */
930 for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) {
931 if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) {
932 const int conflicts_package_num = search_package_hashtable(
933 package_hashtable[package_num]->edge[j]->name,
934 package_hashtable[package_num]->edge[j]->version,
935 package_hashtable[package_num]->edge[j]->operator);
936 if (package_hashtable[conflicts_package_num] == NULL) {
937 /* create a new package */
938 common_node_t *new_node = (common_node_t *) xmalloc(sizeof(common_node_t));
939 new_node->name = package_hashtable[package_num]->edge[j]->name;
940 new_node->version = package_hashtable[package_num]->edge[j]->version;
941 new_node->num_of_edges = 0;
942 new_node->edge = NULL;
943 package_hashtable[conflicts_package_num] = new_node;
945 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
946 conflicts[conflicts_num] = conflicts_package_num;
953 /* Check conflicts */
954 for (i = 0; i < conflicts_num; i++) {
955 /* Check for conflicts */
956 for (j = 0; j < STATUS_HASH_PRIME; j++) {
957 if (status_hashtable[j] == NULL) {
960 state_flag = get_status(j, 2);
961 state_status = get_status(j, 3);
962 if ((state_status != search_name_hashtable("installed"))
963 && (state_flag != search_name_hashtable("want-install"))) {
966 status_package_num = status_hashtable[j]->package;
967 for (k = 0; k < package_hashtable[status_package_num]->num_of_edges; k++) {
968 const edge_t *package_edge = package_hashtable[status_package_num]->edge[k];
969 if (package_edge->type != EDGE_CONFLICTS) {
972 if (package_edge->name != package_hashtable[conflicts[i]]->name) {
975 /* There is a conflict against the package name
976 * check if version conflict as well */
977 if (test_version(package_hashtable[deb_file[i]->package]->version,
978 package_edge->version, package_edge->operator)) {
979 error_msg_and_die("Package %s conflict with %s",
980 name_hashtable[package_hashtable[deb_file[i]->package]->name],
981 name_hashtable[package_hashtable[status_package_num]->name]);
987 /* Check dependendcies */
989 while (deb_file[i] != NULL) {
990 const common_node_t *package_node = package_hashtable[deb_file[i]->package];
993 for (j = 0; j < package_hashtable[deb_file[i]->package]->num_of_edges; j++) {
994 const edge_t *package_edge = package_node->edge[j];
995 const unsigned int package_num = search_package_hashtable(package_edge->name,
996 package_edge->version, package_edge->operator);
998 status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
999 state_status = get_status(status_num, 3);
1000 state_want = get_status(status_num, 1);
1001 switch (package_edge->type) {
1002 case(EDGE_PRE_DEPENDS):
1003 case(EDGE_OR_PRE_DEPENDS):
1004 /* It must be already installed */
1005 /* NOTE: This is untested, nothing apropriate in my status file */
1006 if ((package_hashtable[package_num] == NULL) || (state_status != search_name_hashtable("installed"))) {
1007 error_msg_and_die("Package %s pre-depends on %s, but it is not installed",
1008 name_hashtable[package_node->name],
1009 name_hashtable[package_edge->name]);
1013 case(EDGE_OR_DEPENDS):
1014 /* It must be already installed, or to be installed */
1015 if ((package_hashtable[package_num] == NULL) ||
1016 ((state_status != search_name_hashtable("installed")) &&
1017 (state_want != search_name_hashtable("want_install")))) {
1018 error_msg_and_die("Package %s depends on %s, but it is not installed, or flaged to be installed",
1019 name_hashtable[package_node->name],
1020 name_hashtable[package_edge->name]);
1030 char **create_list(const char *filename)
1033 char **file_list = xmalloc(sizeof(char *));
1039 list_stream = xfopen(filename, "r");
1040 if (list_stream == NULL) {
1043 while (getline(&line, &length, list_stream) != -1) {
1044 file_list = xrealloc(file_list, sizeof(char *) * (length + 1));
1045 last_char = last_char_is(line, '\n');
1049 file_list[count] = xstrdup(line);
1054 fclose(list_stream);
1058 file_list[count] = NULL;
1063 /* maybe i should try and hook this into remove_file.c somehow */
1064 int remove_file_array(char **remove_names, char **exclude_names)
1066 struct stat path_stat;
1068 int remove_flag = FALSE;
1071 if (remove_names == NULL) {
1074 for (i = 0; remove_names[i] != NULL; i++) {
1076 if (exclude_names != NULL) {
1077 for (j = 0; exclude_names[j] != 0; j++) {
1078 if (strcmp(remove_names[i], exclude_names[j]) == 0) {
1085 if (lstat(remove_names[i], &path_stat) < 0) {
1088 if (S_ISDIR(path_stat.st_mode)) {
1089 if (rmdir(remove_names[i]) != -1) {
1093 if (unlink(remove_names[i]) != -1) {
1099 return(remove_flag);
1102 int run_package_script(const char *package_name, const char *script_type)
1104 struct stat path_stat;
1107 script_path = xmalloc(strlen(package_name) + strlen(script_type) + 21);
1108 sprintf(script_path, "/var/lib/dpkg/info/%s.%s", package_name, script_type);
1110 /* If the file doesnt exist is isnt a fatal */
1111 if (lstat(script_path, &path_stat) < 0) {
1112 return(EXIT_SUCCESS);
1114 return(system(script_path));
1118 void all_control_list(char **remove_files, const char *package_name)
1120 const char *all_extensions[11] = {"preinst", "postinst", "prerm", "postrm",
1121 "list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL };
1124 /* Create a list of all /var/lib/dpkg/info/<package> files */
1125 for(i = 0; i < 10; i++) {
1126 remove_files[i] = xmalloc(strlen(package_name) + strlen(all_extensions[i]) + 21);
1127 sprintf(remove_files[i], "/var/lib/dpkg/info/%s.%s", package_name, all_extensions[i]);
1129 remove_files[10] = NULL;
1132 void remove_package(const unsigned int package_num)
1134 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
1135 const unsigned int status_num = search_status_hashtable(package_name);
1136 const int package_name_length = strlen(package_name);
1137 char **remove_files;
1138 char **exclude_files;
1139 char list_name[package_name_length + 25];
1140 char conffile_name[package_name_length + 30];
1143 /* run prerm script */
1144 return_value = run_package_script(package_name, "prem");
1145 if (return_value == -1) {
1146 error_msg_and_die("script failed, prerm failure");
1149 /* Create a list of files to remove, and a seperate list of those to keep */
1150 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
1151 remove_files = create_list(list_name);
1153 sprintf(conffile_name, "/var/lib/dpkg/info/%s.conffiles", package_name);
1154 exclude_files = create_list(conffile_name);
1156 /* Some directories cant be removed straight away, so do multiple passes */
1157 while (remove_file_array(remove_files, exclude_files) == TRUE);
1159 /* Create a list of all /var/lib/dpkg/info/<package> files */
1160 remove_files = xmalloc(11);
1161 all_control_list(remove_files, package_name);
1163 /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */
1164 exclude_files = xmalloc(sizeof(char*) * 3);
1165 exclude_files[0] = xstrdup(conffile_name);
1166 exclude_files[1] = xmalloc(package_name_length + 27);
1167 sprintf(exclude_files[1], "/var/lib/dpkg/info/%s.postrm", package_name);
1168 exclude_files[2] = NULL;
1170 remove_file_array(remove_files, exclude_files);
1172 /* rename <package>.conffile to <package>.list */
1173 rename(conffile_name, list_name);
1175 /* Change package status */
1176 set_status(status_num, "deinstall", 1);
1177 set_status(status_num, "config-files", 3);
1180 void purge_package(const unsigned int package_num)
1182 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
1183 const unsigned int status_num = search_status_hashtable(package_name);
1184 char **remove_files;
1185 char **exclude_files;
1186 char list_name[strlen(package_name) + 25];
1188 /* run prerm script */
1189 if (run_package_script(package_name, "prerm") == -1) {
1190 error_msg_and_die("script failed, prerm failure");
1193 /* Create a list of files to remove */
1194 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
1195 remove_files = create_list(list_name);
1197 exclude_files = xmalloc(1);
1198 exclude_files[0] = NULL;
1200 /* Some directories cant be removed straight away, so do multiple passes */
1201 while (remove_file_array(remove_files, exclude_files) == TRUE);
1203 /* Create a list of all /var/lib/dpkg/info/<package> files */
1204 remove_files = xmalloc(11);
1205 all_control_list(remove_files, package_name);
1206 remove_file_array(remove_files, exclude_files);
1208 /* run postrm script */
1209 if (run_package_script(package_name, "postrm") == -1) {
1210 error_msg_and_die("postrm fialure.. set status to what?");
1212 /* Change package status */
1213 set_status(status_num, "purge", 1);
1214 set_status(status_num, "not-installed", 3);
1217 void unpack_package(deb_file_t *deb_file)
1219 const unsigned int package_name_num = package_hashtable[deb_file->package]->name;
1220 const char *package_name = name_hashtable[package_name_num];
1221 const unsigned int status_num = search_status_hashtable(package_name);
1222 unsigned int status_package_num;
1227 /* If existing version, remove it first */
1228 if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) {
1229 /* Package is already installed, remove old version first */
1230 printf("Preparing to replace %s %s (using %s) ...\n", package_name,
1231 name_hashtable[package_hashtable[status_package_num]->version],
1232 deb_file->filename);
1233 remove_package(status_package_num);
1235 printf("Unpacking %s (from %s) ...\n", package_name, deb_file->filename);
1238 /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
1239 info_prefix = (char *) xmalloc(sizeof(package_name) + 20 + 4 + 1);
1240 sprintf(info_prefix, "/var/lib/dpkg/info/%s.", package_name);
1241 deb_extract(deb_file->filename, stdout, (extract_quiet | extract_control_tar_gz | extract_all_to_fs), info_prefix, NULL);
1243 /* Extract data.tar.gz to the root directory */
1244 deb_extract(deb_file->filename, stdout, (extract_quiet | extract_data_tar_gz | extract_all_to_fs), "/", NULL);
1246 /* Create the list file */
1247 strcat(info_prefix, "list");
1249 out_stream = xfopen(info_prefix, "w");
1250 deb_extract(deb_file->filename, out_stream, (extract_quiet | extract_data_tar_gz | extract_list), NULL, NULL);
1254 set_status(status_num, "install", 1);
1255 set_status(status_num, "unpacked", 3);
1258 void configure_package(deb_file_t *deb_file)
1263 /* Run the preinst prior to extracting */
1264 return_value = run_package_script(name_hashtable[package_hashtable[deb_file->package]->name], "postinst");
1265 if (return_value == -1) {
1266 /* TODO: handle failure gracefully */
1267 error_msg_and_die("postrm fialure.. set status to what?");
1270 /* Change status to reflect success */
1271 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file->package]->name]);
1272 set_status(status_num, "install", 1);
1273 set_status(status_num, "installed", 3);
1276 extern int dpkg_main(int argc, char **argv)
1278 deb_file_t **deb_file = NULL;
1279 status_node_t *status_node;
1288 while ((opt = getopt(argc, argv, "cF:ilPru")) != -1) {
1291 dpkg_opt |= dpkg_opt_configure;
1292 dpkg_opt |= dpkg_opt_package_name;
1294 case 'F': // equivalent to --force in official dpkg
1295 if (strcmp(optarg, "depends") == 0) {
1296 dpkg_opt |= dpkg_opt_force_ignore_depends;
1299 dpkg_opt |= dpkg_opt_install;
1300 dpkg_opt |= dpkg_opt_filename;
1303 dpkg_opt |= dpkg_opt_list_installed;
1305 dpkg_opt |= dpkg_opt_purge;
1306 dpkg_opt |= dpkg_opt_package_name;
1309 dpkg_opt |= dpkg_opt_remove;
1310 dpkg_opt |= dpkg_opt_package_name;
1312 case 'u': /* Equivalent to --unpack in official dpkg */
1313 dpkg_opt |= dpkg_opt_unpack;
1314 dpkg_opt |= dpkg_opt_filename;
1321 if ((argc == optind) || (dpkg_opt == 0)) {
1325 puts("(Reading database ... xxxxx files and directories installed.)");
1326 index_status_file("/var/lib/dpkg/status");
1328 /* Read arguments and store relevant info in structs */
1329 deb_file = xmalloc(sizeof(deb_file_t));
1330 while (optind < argc) {
1331 deb_file[deb_count] = (deb_file_t *) xmalloc(sizeof(deb_file_t));
1332 if (dpkg_opt & dpkg_opt_filename) {
1333 deb_file[deb_count]->filename = xstrdup(argv[optind]);
1334 deb_file[deb_count]->control_file = deb_extract(argv[optind], stdout, (extract_control_tar_gz | extract_one_to_buffer), NULL, "./control");
1335 if (deb_file[deb_count]->control_file == NULL) {
1336 error_msg_and_die("Couldnt extract control file");
1338 package_num = fill_package_struct(deb_file[deb_count]->control_file);
1340 if (package_num == -1) {
1341 error_msg("Invalid control file in %s", argv[optind]);
1344 deb_file[deb_count]->package = (unsigned int) package_num;
1345 /* Add the package to the status hashtable */
1346 if ((dpkg_opt & dpkg_opt_unpack) || (dpkg_opt & dpkg_opt_install)) {
1347 status_node = (status_node_t *) xmalloc(sizeof(status_node_t));
1348 status_node->package = deb_file[deb_count]->package;
1349 /* use reinstreq isnt changed to "ok" until the package control info
1350 * is written to the status file*/
1351 status_node->status = search_name_hashtable("install reinstreq not-installed");
1353 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1354 status_hashtable[status_num] = status_node;
1357 else if (dpkg_opt & dpkg_opt_package_name) {
1358 deb_file[deb_count]->filename = NULL;
1359 deb_file[deb_count]->control_file = NULL;
1360 deb_file[deb_count]->package = search_package_hashtable(
1361 search_name_hashtable(argv[optind]),
1362 search_name_hashtable("ANY"), VER_ANY);
1363 if (package_hashtable[deb_file[deb_count]->package] == NULL) {
1364 error_msg_and_die("unknown package, %s\n", argv[optind]);
1366 state_status = get_status(search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]), 3);
1368 /* check package status is "installed" */
1369 if (dpkg_opt & dpkg_opt_remove) {
1370 if ((strcmp(name_hashtable[state_status], "not-installed") == 0) ||
1371 (strcmp(name_hashtable[state_status], "config-files") == 0)) {
1372 error_msg_and_die("%s is already removed.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1375 else if (dpkg_opt & dpkg_opt_purge) {
1376 /* if package status is "conf-files" then its ok */
1377 if (strcmp(name_hashtable[state_status], "not-installed") == 0) {
1378 error_msg_and_die("%s is already purged.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1385 deb_file[deb_count] = NULL;
1387 /* Check that the deb file arguments are installable */
1388 /* TODO: check dependencies before removing */
1389 if ((dpkg_opt & dpkg_opt_force_ignore_depends) != dpkg_opt_force_ignore_depends) {
1390 if (!check_deps(deb_file, 0, deb_count)) {
1391 error_msg_and_die("Dependency check fialed");
1395 for (i = 0; i < deb_count; i++) {
1396 /* Remove or purge packages */
1397 if (dpkg_opt & dpkg_opt_remove) {
1398 remove_package(deb_file[i]->package);
1400 else if (dpkg_opt & dpkg_opt_purge) {
1401 purge_package(deb_file[i]->package);
1403 else if (dpkg_opt & dpkg_opt_unpack) {
1404 unpack_package(deb_file[i]);
1406 else if (dpkg_opt & dpkg_opt_install) {
1407 unpack_package(deb_file[i]);
1408 configure_package(deb_file[i]);
1410 else if (dpkg_opt & dpkg_opt_configure) {
1411 configure_package(deb_file[i]);
1415 write_status_file(deb_file);
1417 for (i = 0; i < NAME_HASH_PRIME; i++) {
1418 if (name_hashtable[i] != NULL) {
1419 free(name_hashtable[i]);
1422 for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
1423 free_package(package_hashtable[i]);
1425 for (i = 0; i < STATUS_HASH_PRIME; i++) {
1426 if (status_hashtable[i] != NULL) {
1427 free(status_hashtable[i]);
1431 return(EXIT_FAILURE);