1 /* vi: set sw=4 ts=4: */
3 * mini dpkg implementation for busybox.
4 * this is not meant as a replacement for dpkg
6 * written by glenn mcgrath with the help of others
7 * copyright (c) 2001 by glenn mcgrath
9 * started life as a busybox implementation of udpkg
11 * licensed under gplv2 or later, see file license in this tarball for details.
15 * known difference between busybox dpkg and the official dpkg that i don't
16 * consider important, its worth keeping a note of differences anyway, just to
17 * make it easier to maintain.
18 * - the first value for the confflile: field isnt placed on a new line.
19 * - when installing a package the status: field is placed at the end of the
20 * section, rather than just after the package: field.
22 * bugs that need to be fixed
23 * - (unknown, please let me know when you find any)
28 #include "unarchive.h"
30 /* note: if you vary hash_prime sizes be aware,
31 * 1) tweaking these will have a big effect on how much memory this program uses.
32 * 2) for computational efficiency these hash tables should be at least 20%
33 * larger than the maximum number of elements stored in it.
34 * 3) all _hash_prime's must be a prime number or chaos is assured, if your looking
35 * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt
36 * 4) if you go bigger than 15 bits you may get into trouble (untested) as its
37 * sometimes cast to an unsigned, if you go to 16 bit you will overlap
38 * int's and chaos is assured, 16381 is the max prime for 14 bit field
41 /* NAME_HASH_PRIME, Stores package names and versions,
42 * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME,
43 * as there a lot of duplicate version numbers */
44 #define NAME_HASH_PRIME 16381
46 /* PACKAGE_HASH_PRIME, Maximum number of unique packages,
47 * It must not be smaller than STATUS_HASH_PRIME,
48 * Currently only packages from status_hashtable are stored in here, but in
49 * future this may be used to store packages not only from a status file,
50 * but an available_hashtable, and even multiple packages files.
51 * Package can be stored more than once if they have different versions.
52 * e.g. The same package may have different versions in the status file
53 * and available file */
54 #define PACKAGE_HASH_PRIME 10007
55 typedef struct edge_s {
56 unsigned operator:4; /* was:3 */
58 unsigned name:16; /* was:14 */
59 unsigned version:16; /* was:14 */
62 typedef struct common_node_s {
63 unsigned name:16; /* was:14 */
64 unsigned version:16; /* was:14 */
65 unsigned num_of_edges:16; /* was:14 */
69 /* Currently it doesnt store packages that have state-status of not-installed
70 * So it only really has to be the size of the maximum number of packages
71 * likely to be installed at any one time, so there is a bit of leeway here */
72 #define STATUS_HASH_PRIME 8191
73 typedef struct status_node_s {
74 unsigned package:16; /* was:14 */ /* has to fit PACKAGE_HASH_PRIME */
75 unsigned status:16; /* was:14 */ /* has to fit STATUS_HASH_PRIME */
78 /* Were statically declared here, but such a big bss is nommu-unfriendly */
79 static char **name_hashtable; /* [NAME_HASH_PRIME + 1] */
80 static common_node_t **package_hashtable; /* [PACKAGE_HASH_PRIME + 1] */
81 static status_node_t **status_hashtable; /* [STATUS_HASH_PRIME + 1] */
83 /* Even numbers are for 'extras', like ored dependencies or null */
87 EDGE_OR_PRE_DEPENDS = 2,
107 typedef struct deb_file_s {
110 unsigned package:16; /* was:14 */
114 static void make_hash(const char *key, unsigned *start, unsigned *decrement, const int hash_prime)
116 unsigned long hash_num = key[0];
117 int len = strlen(key);
120 /* Maybe i should have uses a "proper" hashing algorithm here instead
121 * of making one up myself, seems to be working ok though. */
122 for (i = 1; i < len; i++) {
123 /* shifts the ascii based value and adds it to previous value
124 * shift amount is mod 24 because long int is 32 bit and data
125 * to be shifted is 8, don't want to shift data to where it has
127 hash_num += ((key[i] + key[i-1]) << ((key[i] * i) % 24));
129 *start = (unsigned) hash_num % hash_prime;
130 *decrement = (unsigned) 1 + (hash_num % (hash_prime - 1));
133 /* this adds the key to the hash table */
134 static int search_name_hashtable(const char *key)
136 unsigned probe_address = 0;
137 unsigned probe_decrement = 0;
139 make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME);
140 while (name_hashtable[probe_address] != NULL) {
141 if (strcmp(name_hashtable[probe_address], key) == 0) {
142 return probe_address;
144 probe_address -= probe_decrement;
145 if ((int)probe_address < 0) {
146 probe_address += NAME_HASH_PRIME;
149 name_hashtable[probe_address] = xstrdup(key);
150 return probe_address;
153 /* this DOESNT add the key to the hashtable
154 * TODO make it consistent with search_name_hashtable
156 static unsigned search_status_hashtable(const char *key)
158 unsigned probe_address = 0;
159 unsigned probe_decrement = 0;
161 make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME);
162 while (status_hashtable[probe_address] != NULL) {
163 if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) {
166 probe_address -= probe_decrement;
167 if ((int)probe_address < 0) {
168 probe_address += STATUS_HASH_PRIME;
171 return probe_address;
174 /* Need to rethink version comparison, maybe the official dpkg has something i can use ? */
175 static int version_compare_part(const char *version1, const char *version2)
177 int upstream_len1 = 0;
178 int upstream_len2 = 0;
187 if (version1 == NULL) {
188 version1 = xstrdup("");
190 if (version2 == NULL) {
191 version2 = xstrdup("");
193 upstream_len1 = strlen(version1);
194 upstream_len2 = strlen(version2);
196 while ((len1 < upstream_len1) || (len2 < upstream_len2)) {
197 /* Compare non-digit section */
198 tmp_int = strcspn(&version1[len1], "0123456789");
199 name1_char = xstrndup(&version1[len1], tmp_int);
201 tmp_int = strcspn(&version2[len2], "0123456789");
202 name2_char = xstrndup(&version2[len2], tmp_int);
204 tmp_int = strcmp(name1_char, name2_char);
212 tmp_int = strspn(&version1[len1], "0123456789");
213 name1_char = xstrndup(&version1[len1], tmp_int);
215 tmp_int = strspn(&version2[len2], "0123456789");
216 name2_char = xstrndup(&version2[len2], tmp_int);
218 ver_num1 = atoi(name1_char);
219 ver_num2 = atoi(name2_char);
222 if (ver_num1 < ver_num2) {
225 if (ver_num1 > ver_num2) {
232 /* if ver1 < ver2 return -1,
233 * if ver1 = ver2 return 0,
234 * if ver1 > ver2 return 1,
236 static int version_compare(const unsigned ver1, const unsigned ver2)
238 char *ch_ver1 = name_hashtable[ver1];
239 char *ch_ver2 = name_hashtable[ver2];
242 char *deb_ver1, *deb_ver2;
243 char *ver1_ptr, *ver2_ptr;
249 if (ch_ver1[1] == ':') {
251 ver1_ptr = strchr(ch_ver1, ':') + 1;
256 if (ch_ver2[1] == ':') {
258 ver2_ptr = strchr(ch_ver2, ':') + 1;
263 if (epoch1 < epoch2) {
266 else if (epoch1 > epoch2) {
270 /* Compare upstream version */
271 upstream_ver1 = xstrdup(ver1_ptr);
272 upstream_ver2 = xstrdup(ver2_ptr);
274 /* Chop off debian version, and store for later use */
275 deb_ver1 = strrchr(upstream_ver1, '-');
276 deb_ver2 = strrchr(upstream_ver2, '-');
285 result = version_compare_part(upstream_ver1, upstream_ver2);
287 /* Compare debian versions */
288 result = version_compare_part(deb_ver1, deb_ver2);
295 static int test_version(const unsigned version1, const unsigned version2, const unsigned operator)
297 const int version_result = version_compare(version1, version2);
302 return (version_result == 0);
304 return (version_result < 0);
306 return (version_result <= 0);
308 return (version_result > 0);
310 return (version_result >= 0);
316 static int search_package_hashtable(const unsigned name, const unsigned version, const unsigned operator)
318 unsigned probe_address = 0;
319 unsigned probe_decrement = 0;
321 make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME);
322 while (package_hashtable[probe_address] != NULL) {
323 if (package_hashtable[probe_address]->name == name) {
324 if (operator == VER_ANY) {
325 return probe_address;
327 if (test_version(package_hashtable[probe_address]->version, version, operator)) {
328 return probe_address;
331 probe_address -= probe_decrement;
332 if ((int)probe_address < 0) {
333 probe_address += PACKAGE_HASH_PRIME;
336 return probe_address;
340 * This function searches through the entire package_hashtable looking
341 * for a package which provides "needle". It returns the index into
342 * the package_hashtable for the providing package.
344 * needle is the index into name_hashtable of the package we are
347 * start_at is the index in the package_hashtable to start looking
348 * at. If start_at is -1 then start at the beginning. This is to allow
349 * for repeated searches since more than one package might provide
352 * FIXME: I don't think this is very efficient, but I thought I'd keep
353 * it simple for now until it proves to be a problem.
355 static int search_for_provides(int needle, int start_at) {
358 for (i = start_at + 1; i < PACKAGE_HASH_PRIME; i++) {
359 p = package_hashtable[i];
362 for (j = 0; j < p->num_of_edges; j++)
363 if (p->edge[j]->type == EDGE_PROVIDES && p->edge[j]->name == needle)
370 * Add an edge to a node
372 static void add_edge_to_node(common_node_t *node, edge_t *edge)
374 node->num_of_edges++;
375 node->edge = xrealloc(node->edge, sizeof(edge_t) * (node->num_of_edges + 1));
376 node->edge[node->num_of_edges - 1] = edge;
380 * Create one new node and one new edge for every dependency.
382 * Dependencies which contain multiple alternatives are represented as
383 * an EDGE_OR_PRE_DEPENDS or EDGE_OR_DEPENDS node, followed by a
384 * number of EDGE_PRE_DEPENDS or EDGE_DEPENDS nodes. The name field of
385 * the OR edge contains the full dependency string while the version
386 * field contains the number of EDGE nodes which follow as part of
389 static void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned 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 /* skip leading spaces */
405 field += strspn(field, " ");
406 line2 = xstrdup(field);
407 field2 = strtok_r(line2, "|", &line_ptr2);
409 if ((edge_type == EDGE_DEPENDS || edge_type == EDGE_PRE_DEPENDS)
410 && (strcmp(field, field2) != 0)
412 or_edge = xmalloc(sizeof(edge_t));
413 or_edge->type = edge_type + 1;
414 or_edge->name = search_name_hashtable(field);
415 or_edge->version = 0; // tracks the number of altenatives
416 add_edge_to_node(parent_node, or_edge);
420 edge = xmalloc(sizeof(edge_t));
421 edge->type = edge_type;
423 /* Skip any extra leading spaces */
424 field2 += strspn(field2, " ");
426 /* Get dependency version info */
427 version = strchr(field2, '(');
428 if (version == NULL) {
429 edge->operator = VER_ANY;
430 /* Get the versions hash number, adding it if the number isnt already in there */
431 edge->version = search_name_hashtable("ANY");
433 /* Skip leading ' ' or '(' */
434 version += strspn(field2, " (");
435 /* Calculate length of any operator characters */
436 offset_ch = strspn(version, "<=>");
437 /* Determine operator */
439 if (strncmp(version, "=", offset_ch) == 0) {
440 edge->operator = VER_EQUAL;
442 else if (strncmp(version, "<<", offset_ch) == 0) {
443 edge->operator = VER_LESS;
445 else if (strncmp(version, "<=", offset_ch) == 0) {
446 edge->operator = VER_LESS_EQUAL;
448 else if (strncmp(version, ">>", offset_ch) == 0) {
449 edge->operator = VER_MORE;
451 else if (strncmp(version, ">=", offset_ch) == 0) {
452 edge->operator = VER_MORE_EQUAL;
454 bb_error_msg_and_die("illegal operator");
457 /* skip to start of version numbers */
458 version += offset_ch;
459 version += strspn(version, " ");
461 /* Truncate version at trailing ' ' or ')' */
462 version[strcspn(version, " )")] = '\0';
463 /* Get the versions hash number, adding it if the number isnt already in there */
464 edge->version = search_name_hashtable(version);
467 /* Get the dependency name */
468 field2[strcspn(field2, " (")] = '\0';
469 edge->name = search_name_hashtable(field2);
474 add_edge_to_node(parent_node, edge);
475 field2 = strtok_r(NULL, "|", &line_ptr2);
476 } while (field2 != NULL);
479 field = strtok_r(NULL, ",", &line_ptr1);
480 } while (field != NULL);
485 static void free_package(common_node_t *node)
489 for (i = 0; i < node->num_of_edges; i++) {
498 * Gets the next package field from package_buffer, seperated into the field name
499 * and field value, it returns the int offset to the first character of the next field
501 static int read_package_field(const char *package_buffer, char **field_name, char **field_value)
503 int offset_name_start = 0;
504 int offset_name_end = 0;
505 int offset_value_start = 0;
506 int offset_value_end = 0;
511 int exit_flag = FALSE;
513 if (package_buffer == NULL) {
519 next_offset = offset + 1;
520 switch (package_buffer[offset]) {
525 if (offset_name_end == 0) {
526 offset_name_end = offset;
527 offset_value_start = next_offset;
529 /* TODO: Name might still have trailing spaces if ':' isnt
530 * immediately after name */
533 /* TODO: The char next_offset may be out of bounds */
534 if (package_buffer[next_offset] != ' ') {
540 /* increment the value start point if its a just filler */
541 if (offset_name_start == offset) {
544 if (offset_value_start == offset) {
545 offset_value_start++;
550 /* Check that the names are valid */
551 offset_value_end = offset;
552 name_length = offset_name_end - offset_name_start;
553 value_length = offset_value_end - offset_value_start;
554 if (name_length == 0) {
557 if ((name_length > 0) && (value_length > 0)) {
561 /* If not valid, start fresh with next field */
563 offset_name_start = offset + 1;
565 offset_value_start = offset + 1;
566 offset_value_end = offset + 1;
573 *field_name = xstrndup(&package_buffer[offset_name_start], name_length);
576 if (value_length > 0) {
577 *field_value = xstrndup(&package_buffer[offset_value_start], value_length);
582 static unsigned fill_package_struct(char *control_buffer)
584 static const char *const field_names[] = { "Package", "Version",
585 "Pre-Depends", "Depends","Replaces", "Provides",
586 "Conflicts", "Suggests", "Recommends", "Enhances", NULL
589 common_node_t *new_node = xzalloc(sizeof(common_node_t));
594 int buffer_length = strlen(control_buffer);
596 new_node->version = search_name_hashtable("unknown");
597 while (field_start < buffer_length) {
600 field_start += read_package_field(&control_buffer[field_start],
601 &field_name, &field_value);
603 if (field_name == NULL) {
604 goto fill_package_struct_cleanup; /* Oh no, the dreaded goto statement ! */
607 field_num = index_in_str_array(field_names, field_name);
609 case 0: /* Package */
610 new_node->name = search_name_hashtable(field_value);
612 case 1: /* Version */
613 new_node->version = search_name_hashtable(field_value);
615 case 2: /* Pre-Depends */
616 add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS);
618 case 3: /* Depends */
619 add_split_dependencies(new_node, field_value, EDGE_DEPENDS);
621 case 4: /* Replaces */
622 add_split_dependencies(new_node, field_value, EDGE_REPLACES);
624 case 5: /* Provides */
625 add_split_dependencies(new_node, field_value, EDGE_PROVIDES);
627 case 6: /* Conflicts */
628 add_split_dependencies(new_node, field_value, EDGE_CONFLICTS);
630 case 7: /* Suggests */
631 add_split_dependencies(new_node, field_value, EDGE_SUGGESTS);
633 case 8: /* Recommends */
634 add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS);
636 case 9: /* Enhances */
637 add_split_dependencies(new_node, field_value, EDGE_ENHANCES);
640 fill_package_struct_cleanup:
645 if (new_node->version == search_name_hashtable("unknown")) {
646 free_package(new_node);
649 num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL);
650 free_package(package_hashtable[num]);
651 package_hashtable[num] = new_node;
655 /* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
656 static unsigned get_status(const unsigned status_node, const int num)
658 char *status_string = name_hashtable[status_hashtable[status_node]->status];
659 char *state_sub_string;
660 unsigned state_sub_num;
664 /* set tmp_string to point to the start of the word number */
665 for (i = 1; i < num; i++) {
666 /* skip past a word */
667 status_string += strcspn(status_string, " ");
668 /* skip past the separating spaces */
669 status_string += strspn(status_string, " ");
671 len = strcspn(status_string, " \n");
672 state_sub_string = xstrndup(status_string, len);
673 state_sub_num = search_name_hashtable(state_sub_string);
674 free(state_sub_string);
675 return state_sub_num;
678 static void set_status(const unsigned status_node_num, const char *new_value, const int position)
680 const unsigned new_value_len = strlen(new_value);
681 const unsigned new_value_num = search_name_hashtable(new_value);
682 unsigned want = get_status(status_node_num, 1);
683 unsigned flag = get_status(status_node_num, 2);
684 unsigned status = get_status(status_node_num, 3);
685 int want_len = strlen(name_hashtable[want]);
686 int flag_len = strlen(name_hashtable[flag]);
687 int status_len = strlen(name_hashtable[status]);
692 want = new_value_num;
693 want_len = new_value_len;
696 flag = new_value_num;
697 flag_len = new_value_len;
700 status = new_value_num;
701 status_len = new_value_len;
704 bb_error_msg_and_die("DEBUG ONLY: this shouldnt happen");
707 new_status = xasprintf("%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]);
708 status_hashtable[status_node_num]->status = search_name_hashtable(new_status);
712 static const char *describe_status(int status_num)
714 int status_want, status_state ;
715 if (status_hashtable[status_num] == NULL || status_hashtable[status_num]->status == 0)
716 return "is not installed or flagged to be installed\n";
718 status_want = get_status(status_num, 1);
719 status_state = get_status(status_num, 3);
721 if (status_state == search_name_hashtable("installed")) {
722 if (status_want == search_name_hashtable("install"))
723 return "is installed";
724 if (status_want == search_name_hashtable("deinstall"))
725 return "is marked to be removed";
726 if (status_want == search_name_hashtable("purge"))
727 return "is marked to be purged";
729 if (status_want == search_name_hashtable("unknown"))
730 return "is in an indeterminate state";
731 if (status_want == search_name_hashtable("install"))
732 return "is marked to be installed";
734 return "is not installed or flagged to be installed";
738 static void index_status_file(const char *filename)
741 char *control_buffer;
743 status_node_t *status_node = NULL;
746 status_file = xfopen(filename, "r");
747 while ((control_buffer = xmalloc_fgets_str(status_file, "\n\n")) != NULL) {
748 const unsigned package_num = fill_package_struct(control_buffer);
749 if (package_num != -1) {
750 status_node = xmalloc(sizeof(status_node_t));
751 /* fill_package_struct doesnt handle the status field */
752 status_line = strstr(control_buffer, "Status:");
753 if (status_line != NULL) {
755 status_line += strspn(status_line, " \n\t");
756 status_line = xstrndup(status_line, strcspn(status_line, "\n"));
757 status_node->status = search_name_hashtable(status_line);
760 status_node->package = package_num;
761 status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]);
762 status_hashtable[status_num] = status_node;
764 free(control_buffer);
769 static void write_buffer_no_status(FILE *new_status_file, const char *control_buffer)
775 start += read_package_field(&control_buffer[start], &name, &value);
779 if (strcmp(name, "Status") != 0) {
780 fprintf(new_status_file, "%s: %s\n", name, value);
785 /* This could do with a cleanup */
786 static void write_status_file(deb_file_t **deb_file)
788 FILE *old_status_file = xfopen("/var/lib/dpkg/status", "r");
789 FILE *new_status_file = xfopen("/var/lib/dpkg/status.udeb", "w");
791 char *status_from_file;
792 char *control_buffer = NULL;
799 /* Update previously known packages */
800 while ((control_buffer = xmalloc_fgets_str(old_status_file, "\n\n")) != NULL) {
801 tmp_string = strstr(control_buffer, "Package:");
802 if (tmp_string == NULL) {
807 tmp_string += strspn(tmp_string, " \n\t");
808 package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
810 tmp_string = strstr(control_buffer, "Status:");
811 if (tmp_string != NULL) {
812 /* Seperate the status value from the control buffer */
814 tmp_string += strspn(tmp_string, " \n\t");
815 status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
817 status_from_file = NULL;
820 /* Find this package in the status hashtable */
821 status_num = search_status_hashtable(package_name);
822 if (status_hashtable[status_num] != NULL) {
823 const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status];
824 if (strcmp(status_from_file, status_from_hashtable) != 0) {
825 /* New status isnt exactly the same as old status */
826 const int state_status = get_status(status_num, 3);
827 if ((strcmp("installed", name_hashtable[state_status]) == 0)
828 || (strcmp("unpacked", name_hashtable[state_status]) == 0)
830 /* We need to add the control file from the package */
832 while (deb_file[i] != NULL) {
833 if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) {
834 /* Write a status file entry with a modified status */
835 /* remove trailing \n's */
836 write_buffer_no_status(new_status_file, deb_file[i]->control_file);
837 set_status(status_num, "ok", 2);
838 fprintf(new_status_file, "Status: %s\n\n",
839 name_hashtable[status_hashtable[status_num]->status]);
845 /* This is temperary, debugging only */
846 if (deb_file[i] == NULL) {
847 bb_error_msg_and_die("ALERT: cannot find a control file, "
848 "your status file may be broken, status may be "
849 "incorrect for %s", package_name);
852 else if (strcmp("not-installed", name_hashtable[state_status]) == 0) {
853 /* Only write the Package, Status, Priority and Section lines */
854 fprintf(new_status_file, "Package: %s\n", package_name);
855 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
860 field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
861 if (field_name == NULL) {
864 if ((strcmp(field_name, "Priority") == 0) ||
865 (strcmp(field_name, "Section") == 0)) {
866 fprintf(new_status_file, "%s: %s\n", field_name, field_value);
870 fputs("\n", new_status_file);
872 else if (strcmp("config-files", name_hashtable[state_status]) == 0) {
873 /* only change the status line */
877 field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
878 if (field_name == NULL) {
881 /* Setup start point for next field */
882 if (strcmp(field_name, "Status") == 0) {
883 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
885 fprintf(new_status_file, "%s: %s\n", field_name, field_value);
889 fputs("\n", new_status_file);
893 /* If the package from the status file wasnt handle above, do it now*/
895 fprintf(new_status_file, "%s\n\n", control_buffer);
898 free(status_from_file);
900 free(control_buffer);
903 /* Write any new packages */
904 for (i = 0; deb_file[i] != NULL; i++) {
905 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]);
906 if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) {
907 write_buffer_no_status(new_status_file, deb_file[i]->control_file);
908 set_status(status_num, "ok", 2);
909 fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
912 fclose(old_status_file);
913 fclose(new_status_file);
916 /* Create a separate backfile to dpkg */
917 if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) {
918 struct stat stat_buf;
919 xstat("/var/lib/dpkg/status", &stat_buf);
920 /* Its ok if renaming the status file fails because status
921 * file doesnt exist, maybe we are starting from scratch */
922 bb_error_msg("no status file found, creating new one");
925 if (rename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status") == -1) {
926 bb_error_msg_and_die("DANGER: cannot create status file, "
927 "you need to manually repair your status file");
931 /* This function returns TRUE if the given package can satisfy a
932 * dependency of type depend_type.
934 * A pre-depends is satisfied only if a package is already installed,
935 * which a regular depends can be satisfied by a package which we want
938 static int package_satisfies_dependency(int package, int depend_type)
940 int status_num = search_status_hashtable(name_hashtable[package_hashtable[package]->name]);
942 /* status could be unknown if package is a pure virtual
943 * provides which cannot satisfy any dependency by itself.
945 if (status_hashtable[status_num] == NULL)
948 switch (depend_type) {
949 case EDGE_PRE_DEPENDS: return get_status(status_num, 3) == search_name_hashtable("installed");
950 case EDGE_DEPENDS: return get_status(status_num, 1) == search_name_hashtable("install");
955 static int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
957 int *conflicts = NULL;
958 int conflicts_num = 0;
962 /* Check for conflicts
963 * TODO: TEST if conflicts with other packages to be installed
965 * Add install packages and the packages they provide
966 * to the list of files to check conflicts for
969 /* Create array of package numbers to check against
970 * installed package for conflicts*/
971 while (deb_file[i] != NULL) {
972 const unsigned package_num = deb_file[i]->package;
973 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
974 conflicts[conflicts_num] = package_num;
976 /* add provides to conflicts list */
977 for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) {
978 if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) {
979 const int conflicts_package_num = search_package_hashtable(
980 package_hashtable[package_num]->edge[j]->name,
981 package_hashtable[package_num]->edge[j]->version,
982 package_hashtable[package_num]->edge[j]->operator);
983 if (package_hashtable[conflicts_package_num] == NULL) {
984 /* create a new package */
985 common_node_t *new_node = xzalloc(sizeof(common_node_t));
986 new_node->name = package_hashtable[package_num]->edge[j]->name;
987 new_node->version = package_hashtable[package_num]->edge[j]->version;
988 package_hashtable[conflicts_package_num] = new_node;
990 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
991 conflicts[conflicts_num] = conflicts_package_num;
998 /* Check conflicts */
1000 while (deb_file[i] != NULL) {
1001 const common_node_t *package_node = package_hashtable[deb_file[i]->package];
1003 status_num = search_status_hashtable(name_hashtable[package_node->name]);
1005 if (get_status(status_num, 3) == search_name_hashtable("installed")) {
1010 for (j = 0; j < package_node->num_of_edges; j++) {
1011 const edge_t *package_edge = package_node->edge[j];
1013 if (package_edge->type == EDGE_CONFLICTS) {
1014 const unsigned package_num =
1015 search_package_hashtable(package_edge->name,
1016 package_edge->version,
1017 package_edge->operator);
1019 if (package_hashtable[package_num] != NULL) {
1020 status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
1022 if (get_status(status_num, 1) == search_name_hashtable("install")) {
1023 result = test_version(package_hashtable[deb_file[i]->package]->version,
1024 package_edge->version, package_edge->operator);
1029 bb_error_msg_and_die("package %s conflicts with %s",
1030 name_hashtable[package_node->name],
1031 name_hashtable[package_edge->name]);
1039 /* Check dependendcies */
1040 for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
1042 int number_of_alternatives = 0;
1043 const edge_t * root_of_alternatives = NULL;
1044 const common_node_t *package_node = package_hashtable[i];
1046 /* If the package node does not exist then this
1047 * package is a virtual one. In which case there are
1048 * no dependencies to check.
1050 if (package_node == NULL) continue;
1052 status_num = search_status_hashtable(name_hashtable[package_node->name]);
1054 /* If there is no status then this package is a
1055 * virtual one provided by something else. In which
1056 * case there are no dependencies to check.
1058 if (status_hashtable[status_num] == NULL) continue;
1060 /* If we don't want this package installed then we may
1061 * as well ignore it's dependencies.
1063 if (get_status(status_num, 1) != search_name_hashtable("install")) {
1067 /* This code is tested only for EDGE_DEPENDS, since I
1068 * have no suitable pre-depends available. There is no
1069 * reason that it shouldn't work though :-)
1071 for (j = 0; j < package_node->num_of_edges; j++) {
1072 const edge_t *package_edge = package_node->edge[j];
1073 unsigned package_num;
1075 if (package_edge->type == EDGE_OR_PRE_DEPENDS
1076 || package_edge->type == EDGE_OR_DEPENDS
1077 ) { /* start an EDGE_OR_ list */
1078 number_of_alternatives = package_edge->version;
1079 root_of_alternatives = package_edge;
1082 if (number_of_alternatives == 0) { /* not in the middle of an EDGE_OR_ list */
1083 number_of_alternatives = 1;
1084 root_of_alternatives = NULL;
1087 package_num = search_package_hashtable(package_edge->name, package_edge->version, package_edge->operator);
1089 if (package_edge->type == EDGE_PRE_DEPENDS ||
1090 package_edge->type == EDGE_DEPENDS) {
1094 /* If we are inside an alternative then check
1095 * this edge is the right type.
1097 * EDGE_DEPENDS == OR_DEPENDS -1
1098 * EDGE_PRE_DEPENDS == OR_PRE_DEPENDS -1
1100 if (root_of_alternatives && package_edge->type != root_of_alternatives->type - 1)
1101 bb_error_msg_and_die("fatal error, package dependencies corrupt: %d != %d - 1",
1102 package_edge->type, root_of_alternatives->type);
1104 if (package_hashtable[package_num] != NULL)
1105 result = !package_satisfies_dependency(package_num, package_edge->type);
1107 if (result) { /* check for other package which provide what we are looking for */
1110 while ((provider = search_for_provides(package_edge->name, provider)) > -1) {
1111 if (package_hashtable[provider] == NULL) {
1112 puts("Have a provider but no package information for it");
1115 result = !package_satisfies_dependency(provider, package_edge->type);
1122 /* It must be already installed, or to be installed */
1123 number_of_alternatives--;
1124 if (result && number_of_alternatives == 0) {
1125 if (root_of_alternatives)
1126 bb_error_msg_and_die(
1127 "package %s %sdepends on %s, "
1128 "which cannot be satisfied",
1129 name_hashtable[package_node->name],
1130 package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
1131 name_hashtable[root_of_alternatives->name]);
1132 bb_error_msg_and_die(
1133 "package %s %sdepends on %s, which %s\n",
1134 name_hashtable[package_node->name],
1135 package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
1136 name_hashtable[package_edge->name],
1137 describe_status(status_num));
1139 if (result == 0 && number_of_alternatives) {
1140 /* we've found a package which
1141 * satisfies the dependency,
1142 * so skip over the rest of
1145 j += number_of_alternatives;
1146 number_of_alternatives = 0;
1155 static char **create_list(const char *filename)
1158 char **file_list = NULL;
1162 /* don't use [xw]fopen here, handle error ourself */
1163 list_stream = fopen(filename, "r");
1164 if (list_stream == NULL) {
1168 while ((line = xmalloc_getline(list_stream)) != NULL) {
1169 file_list = xrealloc(file_list, sizeof(char *) * (count + 2));
1170 file_list[count] = line;
1173 fclose(list_stream);
1178 file_list[count] = NULL;
1182 /* maybe i should try and hook this into remove_file.c somehow */
1183 static int remove_file_array(char **remove_names, char **exclude_names)
1185 struct stat path_stat;
1186 int remove_flag = 1; /* not removed anything yet */
1189 if (remove_names == NULL) {
1192 for (i = 0; remove_names[i] != NULL; i++) {
1193 if (exclude_names != NULL) {
1194 for (j = 0; exclude_names[j] != NULL; j++) {
1195 if (strcmp(remove_names[i], exclude_names[j]) == 0) {
1200 /* TODO: why we are checking lstat? we can just try rm/rmdir */
1201 if (lstat(remove_names[i], &path_stat) < 0) {
1204 if (S_ISDIR(path_stat.st_mode)) {
1205 remove_flag &= rmdir(remove_names[i]); /* 0 if no error */
1207 remove_flag &= unlink(remove_names[i]); /* 0 if no error */
1212 return (remove_flag == 0);
1215 static int run_package_script(const char *package_name, const char *script_type)
1217 struct stat path_stat;
1221 script_path = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, script_type);
1223 /* If the file doesnt exist is isnt a fatal */
1224 result = lstat(script_path, &path_stat) < 0 ? EXIT_SUCCESS : system(script_path);
1229 static const char *all_control_files[] = {
1230 "preinst", "postinst", "prerm", "postrm",
1231 "list", "md5sums", "shlibs", "conffiles",
1232 "config", "templates", NULL
1235 static char **all_control_list(const char *package_name)
1238 char **remove_files;
1240 /* Create a list of all /var/lib/dpkg/info/<package> files */
1241 remove_files = xzalloc(sizeof(all_control_files));
1242 while (all_control_files[i]) {
1243 remove_files[i] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, all_control_files[i]);
1247 return remove_files;
1250 static void free_array(char **array)
1262 /* This function lists information on the installed packages. It loops through
1263 * the status_hashtable to retrieve the info. This results in smaller code than
1264 * scanning the status file. The resulting list, however, is unsorted.
1266 static void list_packages(void)
1270 puts(" Name Version");
1271 puts("+++-==============-==============");
1273 /* go through status hash, dereference package hash and finally strings */
1274 for (i = 0; i < STATUS_HASH_PRIME+1; i++) {
1275 if (status_hashtable[i]) {
1276 const char *stat_str; /* status string */
1277 const char *name_str; /* package name */
1278 const char *vers_str; /* version */
1279 char s1, s2; /* status abbreviations */
1280 int spccnt; /* space count */
1283 stat_str = name_hashtable[status_hashtable[i]->status];
1284 name_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->name];
1285 vers_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->version];
1287 /* get abbreviation for status field 1 */
1288 s1 = stat_str[0] == 'i' ? 'i' : 'r';
1290 /* get abbreviation for status field 2 */
1291 for (j = 0, spccnt = 0; stat_str[j] && spccnt < 2; j++) {
1292 if (stat_str[j] == ' ') spccnt++;
1296 /* print out the line formatted like Debian dpkg */
1297 printf("%c%c %-14s %s\n", s1, s2, name_str, vers_str);
1302 static void remove_package(const unsigned package_num, int noisy)
1304 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
1305 const char *package_version = name_hashtable[package_hashtable[package_num]->version];
1306 const unsigned status_num = search_status_hashtable(package_name);
1307 const int package_name_length = strlen(package_name);
1308 char **remove_files;
1309 char **exclude_files;
1310 char list_name[package_name_length + 25];
1311 char conffile_name[package_name_length + 30];
1314 printf("Removing %s (%s)...\n", package_name, package_version);
1316 /* run prerm script */
1317 if (run_package_script(package_name, "prerm") != 0) {
1318 bb_error_msg_and_die("script failed, prerm failure");
1321 /* Create a list of files to remove, and a separate list of those to keep */
1322 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
1323 remove_files = create_list(list_name);
1325 sprintf(conffile_name, "/var/lib/dpkg/info/%s.conffiles", package_name);
1326 exclude_files = create_list(conffile_name);
1328 /* Some directories can't be removed straight away, so do multiple passes */
1329 while (remove_file_array(remove_files, exclude_files)) /*repeat */;
1330 free_array(exclude_files);
1331 free_array(remove_files);
1333 /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */
1334 exclude_files = xzalloc(sizeof(char*) * 3);
1335 exclude_files[0] = xstrdup(conffile_name);
1336 exclude_files[1] = xasprintf("/var/lib/dpkg/info/%s.postrm", package_name);
1338 /* Create a list of all /var/lib/dpkg/info/<package> files */
1339 remove_files = all_control_list(package_name);
1341 remove_file_array(remove_files, exclude_files);
1342 free_array(remove_files);
1343 free_array(exclude_files);
1345 /* rename <package>.conffile to <package>.list */
1346 rename(conffile_name, list_name);
1348 /* Change package status */
1349 set_status(status_num, "config-files", 3);
1352 static void purge_package(const unsigned package_num)
1354 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
1355 const char *package_version = name_hashtable[package_hashtable[package_num]->version];
1356 const unsigned status_num = search_status_hashtable(package_name);
1357 char **remove_files;
1358 char **exclude_files;
1359 char list_name[strlen(package_name) + 25];
1361 printf("Purging %s (%s)...\n", package_name, package_version);
1363 /* run prerm script */
1364 if (run_package_script(package_name, "prerm") != 0) {
1365 bb_error_msg_and_die("script failed, prerm failure");
1368 /* Create a list of files to remove */
1369 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
1370 remove_files = create_list(list_name);
1372 exclude_files = xzalloc(sizeof(char*));
1374 /* Some directories cant be removed straight away, so do multiple passes */
1375 while (remove_file_array(remove_files, exclude_files)) /* repeat */;
1376 free_array(remove_files);
1378 /* Create a list of all /var/lib/dpkg/info/<package> files */
1379 remove_files = all_control_list(package_name);
1380 remove_file_array(remove_files, exclude_files);
1381 free_array(remove_files);
1382 free(exclude_files);
1384 /* run postrm script */
1385 if (run_package_script(package_name, "postrm") != 0) {
1386 bb_error_msg_and_die("postrm failure.. set status to what?");
1389 /* Change package status */
1390 set_status(status_num, "not-installed", 3);
1393 static archive_handle_t *init_archive_deb_ar(const char *filename)
1395 archive_handle_t *ar_handle;
1397 /* Setup an ar archive handle that refers to the gzip sub archive */
1398 ar_handle = init_handle();
1399 ar_handle->filter = filter_accept_list_reassign;
1400 ar_handle->src_fd = xopen(filename, O_RDONLY);
1405 static void init_archive_deb_control(archive_handle_t *ar_handle)
1407 archive_handle_t *tar_handle;
1409 /* Setup the tar archive handle */
1410 tar_handle = init_handle();
1411 tar_handle->src_fd = ar_handle->src_fd;
1413 /* We don't care about data.tar.* or debian-binary, just control.tar.* */
1414 #ifdef CONFIG_FEATURE_DEB_TAR_GZ
1415 llist_add_to(&(ar_handle->accept), (char*)"control.tar.gz");
1417 #ifdef CONFIG_FEATURE_DEB_TAR_BZ2
1418 llist_add_to(&(ar_handle->accept), (char*)"control.tar.bz2");
1421 /* Assign the tar handle as a subarchive of the ar handle */
1422 ar_handle->sub_archive = tar_handle;
1425 static void init_archive_deb_data(archive_handle_t *ar_handle)
1427 archive_handle_t *tar_handle;
1429 /* Setup the tar archive handle */
1430 tar_handle = init_handle();
1431 tar_handle->src_fd = ar_handle->src_fd;
1433 /* We don't care about control.tar.* or debian-binary, just data.tar.* */
1434 #ifdef CONFIG_FEATURE_DEB_TAR_GZ
1435 llist_add_to(&(ar_handle->accept), (char*)"data.tar.gz");
1437 #ifdef CONFIG_FEATURE_DEB_TAR_BZ2
1438 llist_add_to(&(ar_handle->accept), (char*)"data.tar.bz2");
1441 /* Assign the tar handle as a subarchive of the ar handle */
1442 ar_handle->sub_archive = tar_handle;
1445 static char *deb_extract_control_file_to_buffer(archive_handle_t *ar_handle, llist_t *myaccept)
1447 ar_handle->sub_archive->action_data = data_extract_to_buffer;
1448 ar_handle->sub_archive->accept = myaccept;
1449 ar_handle->sub_archive->filter = filter_accept_list;
1451 unpack_ar_archive(ar_handle);
1452 close(ar_handle->src_fd);
1454 return ar_handle->sub_archive->buffer;
1457 static void data_extract_all_prefix(archive_handle_t *archive_handle)
1459 char *name_ptr = archive_handle->file_header->name;
1461 name_ptr += strspn(name_ptr, "./");
1462 if (name_ptr[0] != '\0') {
1463 archive_handle->file_header->name = xasprintf("%s%s", archive_handle->buffer, name_ptr);
1464 data_extract_all(archive_handle);
1468 static void unpack_package(deb_file_t *deb_file)
1470 const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
1471 const unsigned status_num = search_status_hashtable(package_name);
1472 const unsigned status_package_num = status_hashtable[status_num]->package;
1474 char *list_filename;
1475 archive_handle_t *archive_handle;
1477 llist_t *accept_list = NULL;
1480 /* If existing version, remove it first */
1481 if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) {
1482 /* Package is already installed, remove old version first */
1483 printf("Preparing to replace %s %s (using %s)...\n", package_name,
1484 name_hashtable[package_hashtable[status_package_num]->version],
1485 deb_file->filename);
1486 remove_package(status_package_num, 0);
1488 printf("Unpacking %s (from %s)...\n", package_name, deb_file->filename);
1491 /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
1492 info_prefix = xasprintf("/var/lib/dpkg/info/%s.", package_name);
1493 archive_handle = init_archive_deb_ar(deb_file->filename);
1494 init_archive_deb_control(archive_handle);
1496 while (all_control_files[i]) {
1497 char *c = xasprintf("./%s", all_control_files[i]);
1498 llist_add_to(&accept_list, c);
1501 archive_handle->sub_archive->accept = accept_list;
1502 archive_handle->sub_archive->filter = filter_accept_list;
1503 archive_handle->sub_archive->action_data = data_extract_all_prefix;
1504 archive_handle->sub_archive->buffer = info_prefix;
1505 archive_handle->sub_archive->flags |= ARCHIVE_EXTRACT_UNCONDITIONAL;
1506 unpack_ar_archive(archive_handle);
1508 /* Run the preinst prior to extracting */
1509 if (run_package_script(package_name, "preinst") != 0) {
1510 /* when preinst returns exit code != 0 then quit installation process */
1511 bb_error_msg_and_die("subprocess pre-installation script returned error");
1514 /* Extract data.tar.gz to the root directory */
1515 archive_handle = init_archive_deb_ar(deb_file->filename);
1516 init_archive_deb_data(archive_handle);
1517 archive_handle->sub_archive->action_data = data_extract_all_prefix;
1518 archive_handle->sub_archive->buffer = (char*)"/"; /* huh? */
1519 archive_handle->sub_archive->flags |= ARCHIVE_EXTRACT_UNCONDITIONAL;
1520 unpack_ar_archive(archive_handle);
1522 /* Create the list file */
1523 list_filename = xasprintf("/var/lib/dpkg/info/%s.list", package_name);
1524 out_stream = xfopen(list_filename, "w");
1525 while (archive_handle->sub_archive->passed) {
1526 /* the leading . has been stripped by data_extract_all_prefix already */
1527 fputs(archive_handle->sub_archive->passed->data, out_stream);
1528 fputc('\n', out_stream);
1529 archive_handle->sub_archive->passed = archive_handle->sub_archive->passed->link;
1534 set_status(status_num, "install", 1);
1535 set_status(status_num, "unpacked", 3);
1538 free(list_filename);
1541 static void configure_package(deb_file_t *deb_file)
1543 const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
1544 const char *package_version = name_hashtable[package_hashtable[deb_file->package]->version];
1545 const int status_num = search_status_hashtable(package_name);
1547 printf("Setting up %s (%s)...\n", package_name, package_version);
1549 /* Run the postinst script */
1550 if (run_package_script(package_name, "postinst") != 0) {
1551 /* TODO: handle failure gracefully */
1552 bb_error_msg_and_die("postrm failure.. set status to what?");
1554 /* Change status to reflect success */
1555 set_status(status_num, "install", 1);
1556 set_status(status_num, "installed", 3);
1559 int dpkg_main(int argc, char **argv);
1560 int dpkg_main(int argc, char **argv)
1562 deb_file_t **deb_file = NULL;
1563 status_node_t *status_node;
1572 OPT_configure = 0x1,
1573 OPT_force_ignore_depends = 0x2,
1575 OPT_list_installed = 0x8,
1581 opt = getopt32(argc, argv, "CF:ilPru", &str_f);
1582 //if (opt & OPT_configure) ... // -C
1583 if (opt & OPT_force_ignore_depends) { // -F (--force in official dpkg)
1584 if (strcmp(str_f, "depends"))
1585 opt &= ~OPT_force_ignore_depends;
1587 //if (opt & OPT_install) ... // -i
1588 //if (opt & OPT_list_installed) ... // -l
1589 //if (opt & OPT_purge) ... // -P
1590 //if (opt & OPT_remove) ... // -r
1591 //if (opt & OPT_unpack) ... // -u (--unpack in official dpkg)
1594 /* check for non-option argument if expected */
1595 if (!opt || (!argc && !(opt && OPT_list_installed)))
1598 name_hashtable = xzalloc(sizeof(name_hashtable[0]) * (NAME_HASH_PRIME + 1));
1599 package_hashtable = xzalloc(sizeof(package_hashtable[0]) * (PACKAGE_HASH_PRIME + 1));
1600 status_hashtable = xzalloc(sizeof(status_hashtable[0]) * (STATUS_HASH_PRIME + 1));
1602 /* puts("(Reading database ... xxxxx files and directories installed.)"); */
1603 index_status_file("/var/lib/dpkg/status");
1605 /* if the list action was given print the installed packages and exit */
1606 if (opt & OPT_list_installed) {
1608 return EXIT_SUCCESS;
1611 /* Read arguments and store relevant info in structs */
1613 /* deb_count = nb_elem - 1 and we need nb_elem + 1 to allocate terminal node [NULL pointer] */
1614 deb_file = xrealloc(deb_file, sizeof(deb_file[0]) * (deb_count + 2));
1615 deb_file[deb_count] = xzalloc(sizeof(deb_file[0][0]));
1616 if (opt & (OPT_install | OPT_unpack)) {
1617 /* -i/-u: require filename */
1618 archive_handle_t *archive_handle;
1619 llist_t *control_list = NULL;
1621 /* Extract the control file */
1622 llist_add_to(&control_list, (char*)"./control");
1623 archive_handle = init_archive_deb_ar(argv[0]);
1624 init_archive_deb_control(archive_handle);
1625 deb_file[deb_count]->control_file = deb_extract_control_file_to_buffer(archive_handle, control_list);
1626 if (deb_file[deb_count]->control_file == NULL) {
1627 bb_error_msg_and_die("cannot extract control file");
1629 deb_file[deb_count]->filename = xstrdup(argv[0]);
1630 package_num = fill_package_struct(deb_file[deb_count]->control_file);
1632 if (package_num == -1) {
1633 bb_error_msg("invalid control file in %s", argv[0]);
1637 deb_file[deb_count]->package = (unsigned) package_num;
1639 /* Add the package to the status hashtable */
1640 if (opt & (OPT_unpack | OPT_install)) {
1641 /* Try and find a currently installed version of this package */
1642 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1643 /* If no previous entry was found initialise a new entry */
1644 if (status_hashtable[status_num] == NULL
1645 || status_hashtable[status_num]->status == 0
1647 status_node = xmalloc(sizeof(status_node_t));
1648 status_node->package = deb_file[deb_count]->package;
1649 /* reinstreq isnt changed to "ok" until the package control info
1650 * is written to the status file*/
1651 status_node->status = search_name_hashtable("install reinstreq not-installed");
1652 status_hashtable[status_num] = status_node;
1654 set_status(status_num, "install", 1);
1655 set_status(status_num, "reinstreq", 2);
1658 } else if (opt & (OPT_configure | OPT_purge | OPT_remove)) {
1659 /* -C/-p/-r: require package name */
1660 deb_file[deb_count]->package = search_package_hashtable(
1661 search_name_hashtable(argv[0]),
1662 search_name_hashtable("ANY"), VER_ANY);
1663 if (package_hashtable[deb_file[deb_count]->package] == NULL) {
1664 bb_error_msg_and_die("package %s is uninstalled or unknown", argv[0]);
1666 package_num = deb_file[deb_count]->package;
1667 status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
1668 state_status = get_status(status_num, 3);
1670 /* check package status is "installed" */
1671 if (opt & OPT_remove) {
1672 if (strcmp(name_hashtable[state_status], "not-installed") == 0
1673 || strcmp(name_hashtable[state_status], "config-files") == 0
1675 bb_error_msg_and_die("%s is already removed", name_hashtable[package_hashtable[package_num]->name]);
1677 set_status(status_num, "deinstall", 1);
1678 } else if (opt & OPT_purge) {
1679 /* if package status is "conf-files" then its ok */
1680 if (strcmp(name_hashtable[state_status], "not-installed") == 0) {
1681 bb_error_msg_and_die("%s is already purged", name_hashtable[package_hashtable[package_num]->name]);
1683 set_status(status_num, "purge", 1);
1690 bb_error_msg_and_die("no package files specified");
1691 deb_file[deb_count] = NULL;
1693 /* Check that the deb file arguments are installable */
1694 if (!(opt & OPT_force_ignore_depends)) {
1695 if (!check_deps(deb_file, 0, deb_count)) {
1696 bb_error_msg_and_die("dependency check failed");
1700 /* TODO: install or remove packages in the correct dependency order */
1701 for (i = 0; i < deb_count; i++) {
1702 /* Remove or purge packages */
1703 if (opt & OPT_remove) {
1704 remove_package(deb_file[i]->package, 1);
1706 else if (opt & OPT_purge) {
1707 purge_package(deb_file[i]->package);
1709 else if (opt & OPT_unpack) {
1710 unpack_package(deb_file[i]);
1712 else if (opt & OPT_install) {
1713 unpack_package(deb_file[i]);
1714 /* package is configured in second pass below */
1716 else if (opt & OPT_configure) {
1717 configure_package(deb_file[i]);
1720 /* configure installed packages */
1721 if (opt & OPT_install) {
1722 for (i = 0; i < deb_count; i++)
1723 configure_package(deb_file[i]);
1726 write_status_file(deb_file);
1728 if (ENABLE_FEATURE_CLEAN_UP) {
1729 for (i = 0; i < deb_count; i++) {
1730 free(deb_file[i]->control_file);
1731 free(deb_file[i]->filename);
1737 for (i = 0; i < NAME_HASH_PRIME; i++) {
1738 free(name_hashtable[i]);
1741 for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
1742 free_package(package_hashtable[i]);
1745 for (i = 0; i < STATUS_HASH_PRIME; i++) {
1746 free(status_hashtable[i]);
1749 free(status_hashtable);
1750 free(package_hashtable);
1751 free(name_hashtable);
1754 return EXIT_SUCCESS;