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 * parts of the version comparison code is plucked from the real dpkg
10 * application which is licensed GPLv2 and
11 * copyright (c) 1995 Ian Jackson <ian@chiark.greenend.org.uk>
13 * started life as a busybox implementation of udpkg
15 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
19 * known difference between busybox dpkg and the official dpkg that i don't
20 * consider important, its worth keeping a note of differences anyway, just to
21 * make it easier to maintain.
22 * - the first value for the confflile: field isnt placed on a new line.
23 * - when installing a package the status: field is placed at the end of the
24 * section, rather than just after the package: field.
26 * bugs that need to be fixed
27 * - (unknown, please let me know when you find any)
31 //kbuild:lib-$(CONFIG_DPKG) += dpkg.o
33 //usage:#define dpkg_trivial_usage
34 //usage: "[-ilCPru] [-F OPT] PACKAGE"
35 //usage:#define dpkg_full_usage "\n\n"
36 //usage: "Install, remove and manage Debian packages\n"
37 //usage: IF_LONG_OPTS(
38 //usage: "\n -i,--install Install the package"
39 //usage: "\n -l,--list List of installed packages"
40 //usage: "\n --configure Configure an unpackaged package"
41 //usage: "\n -P,--purge Purge all files of a package"
42 //usage: "\n -r,--remove Remove all but the configuration files for a package"
43 //usage: "\n --unpack Unpack a package, but don't configure it"
44 //usage: "\n --force-depends Ignore dependency problems"
45 //usage: "\n --force-confnew Overwrite existing config files when installing"
46 //usage: "\n --force-confold Keep old config files when installing"
48 //usage: IF_NOT_LONG_OPTS(
49 //usage: "\n -i Install the package"
50 //usage: "\n -l List of installed packages"
51 //usage: "\n -C Configure an unpackaged package"
52 //usage: "\n -P Purge all files of a package"
53 //usage: "\n -r Remove all but the configuration files for a package"
54 //usage: "\n -u Unpack a package, but don't configure it"
55 //usage: "\n -F depends Ignore dependency problems"
56 //usage: "\n -F confnew Overwrite existing config files when installing"
57 //usage: "\n -F confold Keep old config files when installing"
62 #include "bb_archive.h"
64 /* note: if you vary hash_prime sizes be aware,
65 * 1) tweaking these will have a big effect on how much memory this program uses.
66 * 2) for computational efficiency these hash tables should be at least 20%
67 * larger than the maximum number of elements stored in it.
68 * 3) all _hash_prime's must be a prime number or chaos is assured, if your looking
69 * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt
70 * 4) if you go bigger than 15 bits you may get into trouble (untested) as its
71 * sometimes cast to an unsigned, if you go to 16 bit you will overlap
72 * int's and chaos is assured, 16381 is the max prime for 14 bit field
75 /* NAME_HASH_PRIME, Stores package names and versions,
76 * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME,
77 * as there a lot of duplicate version numbers */
78 #define NAME_HASH_PRIME 16381
80 /* PACKAGE_HASH_PRIME, Maximum number of unique packages,
81 * It must not be smaller than STATUS_HASH_PRIME,
82 * Currently only packages from status_hashtable are stored in here, but in
83 * future this may be used to store packages not only from a status file,
84 * but an available_hashtable, and even multiple packages files.
85 * Package can be stored more than once if they have different versions.
86 * e.g. The same package may have different versions in the status file
87 * and available file */
88 #define PACKAGE_HASH_PRIME 10007
89 typedef struct edge_s {
90 unsigned operator:4; /* was:3 */
92 unsigned name:16; /* was:14 */
93 unsigned version:16; /* was:14 */
96 typedef struct common_node_s {
97 unsigned name:16; /* was:14 */
98 unsigned version:16; /* was:14 */
99 unsigned num_of_edges:16; /* was:14 */
103 /* Currently it doesnt store packages that have state-status of not-installed
104 * So it only really has to be the size of the maximum number of packages
105 * likely to be installed at any one time, so there is a bit of leeway here */
106 #define STATUS_HASH_PRIME 8191
107 typedef struct status_node_s {
108 unsigned package:16; /* was:14 */ /* has to fit PACKAGE_HASH_PRIME */
109 unsigned status:16; /* was:14 */ /* has to fit STATUS_HASH_PRIME */
115 char *name_hashtable[NAME_HASH_PRIME + 1];
116 common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
117 status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
119 #define G (*ptr_to_globals)
120 #define name_hashtable (G.name_hashtable )
121 #define package_hashtable (G.package_hashtable)
122 #define status_hashtable (G.status_hashtable )
123 #define INIT_G() do { \
124 SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
128 /* Even numbers are for 'extras', like ored dependencies or null */
131 EDGE_PRE_DEPENDS = 1,
132 EDGE_OR_PRE_DEPENDS = 2,
139 EDGE_RECOMMENDS = 13,
152 typedef struct deb_file_s {
155 unsigned package:16; /* was:14 */
159 static void make_hash(const char *key, unsigned *start, unsigned *decrement, const int hash_prime)
161 unsigned long hash_num = key[0];
162 int len = strlen(key);
165 /* Maybe i should have uses a "proper" hashing algorithm here instead
166 * of making one up myself, seems to be working ok though. */
167 for (i = 1; i < len; i++) {
168 /* shifts the ascii based value and adds it to previous value
169 * shift amount is mod 24 because long int is 32 bit and data
170 * to be shifted is 8, don't want to shift data to where it has
172 hash_num += (key[i] + key[i-1]) << ((key[i] * i) % 24);
174 *start = (unsigned) hash_num % hash_prime;
175 *decrement = (unsigned) 1 + (hash_num % (hash_prime - 1));
178 /* this adds the key to the hash table */
179 static int search_name_hashtable(const char *key)
181 unsigned probe_address;
182 unsigned probe_decrement;
184 make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME);
185 while (name_hashtable[probe_address] != NULL) {
186 if (strcmp(name_hashtable[probe_address], key) == 0) {
187 return probe_address;
189 probe_address -= probe_decrement;
190 if ((int)probe_address < 0) {
191 probe_address += NAME_HASH_PRIME;
194 name_hashtable[probe_address] = xstrdup(key);
195 return probe_address;
198 /* this DOESNT add the key to the hashtable
199 * TODO make it consistent with search_name_hashtable
201 static unsigned search_status_hashtable(const char *key)
203 unsigned probe_address;
204 unsigned probe_decrement;
206 make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME);
207 while (status_hashtable[probe_address] != NULL) {
208 if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) {
211 probe_address -= probe_decrement;
212 if ((int)probe_address < 0) {
213 probe_address += STATUS_HASH_PRIME;
216 return probe_address;
219 static int order(char x)
221 return (x == '~' ? -1
225 : (unsigned char)x + 256
229 /* This code is taken from dpkg and modified slightly to work with busybox */
230 static int version_compare_part(const char *val, const char *ref)
235 while (*val || *ref) {
238 while ((*val && !isdigit(*val)) || (*ref && !isdigit(*ref))) {
239 int vc = order(*val);
240 int rc = order(*ref);
253 while (isdigit(*val) && isdigit(*ref)) {
255 first_diff = *val - *ref;
269 /* if ver1 < ver2 return -1,
270 * if ver1 = ver2 return 0,
271 * if ver1 > ver2 return 1,
273 static int version_compare(const unsigned ver1, const unsigned ver2)
275 char *ch_ver1 = name_hashtable[ver1];
276 char *ch_ver2 = name_hashtable[ver2];
277 unsigned epoch1 = 0, epoch2 = 0;
279 char *deb_ver1, *deb_ver2;
285 colon = strchr(ch_ver1, ':');
287 epoch1 = atoi(ch_ver1);
290 colon = strchr(ch_ver2, ':');
292 epoch2 = atoi(ch_ver2);
295 if (epoch1 < epoch2) {
298 if (epoch1 > epoch2) {
302 /* Compare upstream version */
303 upstream_ver1 = xstrdup(ch_ver1);
304 upstream_ver2 = xstrdup(ch_ver2);
306 /* Chop off debian version, and store for later use */
307 deb_ver1 = strrchr(upstream_ver1, '-');
308 deb_ver2 = strrchr(upstream_ver2, '-');
315 result = version_compare_part(upstream_ver1, upstream_ver2);
317 /* Compare debian versions */
318 result = version_compare_part(deb_ver1, deb_ver2);
326 static int test_version(const unsigned version1, const unsigned version2, const unsigned operator)
328 const int version_result = version_compare(version1, version2);
333 return (version_result == 0);
335 return (version_result < 0);
337 return (version_result <= 0);
339 return (version_result > 0);
341 return (version_result >= 0);
346 static int search_package_hashtable(const unsigned name, const unsigned version, const unsigned operator)
348 unsigned probe_address;
349 unsigned probe_decrement;
351 make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME);
352 while (package_hashtable[probe_address] != NULL) {
353 if (package_hashtable[probe_address]->name == name) {
354 if (operator == VER_ANY) {
355 return probe_address;
357 if (test_version(package_hashtable[probe_address]->version, version, operator)) {
358 return probe_address;
361 probe_address -= probe_decrement;
362 if ((int)probe_address < 0) {
363 probe_address += PACKAGE_HASH_PRIME;
366 return probe_address;
370 * This function searches through the entire package_hashtable looking
371 * for a package which provides "needle". It returns the index into
372 * the package_hashtable for the providing package.
374 * needle is the index into name_hashtable of the package we are
377 * start_at is the index in the package_hashtable to start looking
378 * at. If start_at is -1 then start at the beginning. This is to allow
379 * for repeated searches since more than one package might provide
382 * FIXME: I don't think this is very efficient, but I thought I'd keep
383 * it simple for now until it proves to be a problem.
385 static int search_for_provides(int needle, int start_at)
389 for (i = start_at + 1; i < PACKAGE_HASH_PRIME; i++) {
390 p = package_hashtable[i];
393 for (j = 0; j < p->num_of_edges; j++)
394 if (p->edge[j]->type == EDGE_PROVIDES && p->edge[j]->name == needle)
401 * Add an edge to a node
403 static void add_edge_to_node(common_node_t *node, edge_t *edge)
405 node->edge = xrealloc_vector(node->edge, 2, node->num_of_edges);
406 node->edge[node->num_of_edges++] = edge;
410 * Create one new node and one new edge for every dependency.
412 * Dependencies which contain multiple alternatives are represented as
413 * an EDGE_OR_PRE_DEPENDS or EDGE_OR_DEPENDS node, followed by a
414 * number of EDGE_PRE_DEPENDS or EDGE_DEPENDS nodes. The name field of
415 * the OR edge contains the full dependency string while the version
416 * field contains the number of EDGE nodes which follow as part of
419 static void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned edge_type)
421 char *line = xstrdup(whole_line);
423 char *line_ptr1 = NULL;
424 char *line_ptr2 = NULL;
432 field = strtok_r(line, ",", &line_ptr1);
434 /* skip leading spaces */
435 field += strspn(field, " ");
436 line2 = xstrdup(field);
437 field2 = strtok_r(line2, "|", &line_ptr2);
439 if ((edge_type == EDGE_DEPENDS || edge_type == EDGE_PRE_DEPENDS)
440 && (strcmp(field, field2) != 0)
442 or_edge = xzalloc(sizeof(edge_t));
443 or_edge->type = edge_type + 1;
444 or_edge->name = search_name_hashtable(field);
445 //or_edge->version = 0; // tracks the number of alternatives
446 add_edge_to_node(parent_node, or_edge);
450 edge = xmalloc(sizeof(edge_t));
451 edge->type = edge_type;
453 /* Skip any extra leading spaces */
454 field2 += strspn(field2, " ");
456 /* Get dependency version info */
457 version = strchr(field2, '(');
458 if (version == NULL) {
459 edge->operator = VER_ANY;
460 /* Get the versions hash number, adding it if the number isnt already in there */
461 edge->version = search_name_hashtable("ANY");
463 /* Skip leading ' ' or '(' */
464 version += strspn(version, " (");
465 /* Calculate length of any operator characters */
466 offset_ch = strspn(version, "<=>");
467 /* Determine operator */
469 if (strncmp(version, "=", offset_ch) == 0) {
470 edge->operator = VER_EQUAL;
471 } else if (strncmp(version, "<<", offset_ch) == 0) {
472 edge->operator = VER_LESS;
473 } else if (strncmp(version, "<=", offset_ch) == 0) {
474 edge->operator = VER_LESS_EQUAL;
475 } else if (strncmp(version, ">>", offset_ch) == 0) {
476 edge->operator = VER_MORE;
477 } else if (strncmp(version, ">=", offset_ch) == 0) {
478 edge->operator = VER_MORE_EQUAL;
480 bb_error_msg_and_die("illegal operator");
483 /* skip to start of version numbers */
484 version += offset_ch;
485 version += strspn(version, " ");
487 /* Truncate version at trailing ' ' or ')' */
488 version[strcspn(version, " )")] = '\0';
489 /* Get the versions hash number, adding it if the number isnt already in there */
490 edge->version = search_name_hashtable(version);
493 /* Get the dependency name */
494 field2[strcspn(field2, " (")] = '\0';
495 edge->name = search_name_hashtable(field2);
500 add_edge_to_node(parent_node, edge);
501 field2 = strtok_r(NULL, "|", &line_ptr2);
502 } while (field2 != NULL);
505 field = strtok_r(NULL, ",", &line_ptr1);
506 } while (field != NULL);
511 static void free_package(common_node_t *node)
515 for (i = 0; i < node->num_of_edges; i++) {
524 * Gets the next package field from package_buffer, separated into the field name
525 * and field value, it returns the int offset to the first character of the next field
527 static int read_package_field(const char *package_buffer, char **field_name, char **field_value)
529 int offset_name_start = 0;
530 int offset_name_end = 0;
531 int offset_value_start = 0;
532 int offset_value_end = 0;
537 int exit_flag = FALSE;
539 if (package_buffer == NULL) {
545 next_offset = offset + 1;
546 switch (package_buffer[offset]) {
551 if (offset_name_end == 0) {
552 offset_name_end = offset;
553 offset_value_start = next_offset;
555 /* TODO: Name might still have trailing spaces if ':' isnt
556 * immediately after name */
559 /* TODO: The char next_offset may be out of bounds */
560 if (package_buffer[next_offset] != ' ') {
566 /* increment the value start point if its a just filler */
567 if (offset_name_start == offset) {
570 if (offset_value_start == offset) {
571 offset_value_start++;
576 /* Check that the names are valid */
577 offset_value_end = offset;
578 name_length = offset_name_end - offset_name_start;
579 value_length = offset_value_end - offset_value_start;
580 if (name_length == 0) {
583 if ((name_length > 0) && (value_length > 0)) {
587 /* If not valid, start fresh with next field */
589 offset_name_start = offset + 1;
591 offset_value_start = offset + 1;
592 offset_value_end = offset + 1;
599 *field_name = xstrndup(&package_buffer[offset_name_start], name_length);
602 if (value_length > 0) {
603 *field_value = xstrndup(&package_buffer[offset_value_start], value_length);
608 static unsigned fill_package_struct(char *control_buffer)
610 static const char field_names[] ALIGN1 =
611 "Package\0""Version\0"
612 "Pre-Depends\0""Depends\0""Replaces\0""Provides\0"
613 "Conflicts\0""Suggests\0""Recommends\0""Enhances\0";
615 common_node_t *new_node = xzalloc(sizeof(common_node_t));
620 int buffer_length = strlen(control_buffer);
622 new_node->version = search_name_hashtable("unknown");
623 while (field_start < buffer_length) {
626 field_start += read_package_field(&control_buffer[field_start],
627 &field_name, &field_value);
629 if (field_name == NULL) {
630 goto fill_package_struct_cleanup;
633 field_num = index_in_strings(field_names, field_name);
635 case 0: /* Package */
636 new_node->name = search_name_hashtable(field_value);
638 case 1: /* Version */
639 new_node->version = search_name_hashtable(field_value);
641 case 2: /* Pre-Depends */
642 add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS);
644 case 3: /* Depends */
645 add_split_dependencies(new_node, field_value, EDGE_DEPENDS);
647 case 4: /* Replaces */
648 add_split_dependencies(new_node, field_value, EDGE_REPLACES);
650 case 5: /* Provides */
651 add_split_dependencies(new_node, field_value, EDGE_PROVIDES);
653 case 6: /* Conflicts */
654 add_split_dependencies(new_node, field_value, EDGE_CONFLICTS);
656 case 7: /* Suggests */
657 add_split_dependencies(new_node, field_value, EDGE_SUGGESTS);
659 case 8: /* Recommends */
660 add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS);
662 case 9: /* Enhances */
663 add_split_dependencies(new_node, field_value, EDGE_ENHANCES);
666 fill_package_struct_cleanup:
671 if (new_node->version == search_name_hashtable("unknown")) {
672 free_package(new_node);
675 num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL);
676 free_package(package_hashtable[num]);
677 package_hashtable[num] = new_node;
681 /* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
682 static unsigned get_status(const unsigned status_node, const int num)
684 char *status_string = name_hashtable[status_hashtable[status_node]->status];
685 char *state_sub_string;
686 unsigned state_sub_num;
690 /* set tmp_string to point to the start of the word number */
691 for (i = 1; i < num; i++) {
692 /* skip past a word */
693 status_string += strcspn(status_string, " ");
694 /* skip past the separating spaces */
695 status_string += strspn(status_string, " ");
697 len = strcspn(status_string, " \n");
698 state_sub_string = xstrndup(status_string, len);
699 state_sub_num = search_name_hashtable(state_sub_string);
700 free(state_sub_string);
701 return state_sub_num;
704 static void set_status(const unsigned status_node_num, const char *new_value, const int position)
706 const unsigned new_value_num = search_name_hashtable(new_value);
707 unsigned want = get_status(status_node_num, 1);
708 unsigned flag = get_status(status_node_num, 2);
709 unsigned status = get_status(status_node_num, 3);
714 want = new_value_num;
717 flag = new_value_num;
720 status = new_value_num;
723 bb_error_msg_and_die("DEBUG ONLY: this shouldnt happen");
726 new_status = xasprintf("%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]);
727 status_hashtable[status_node_num]->status = search_name_hashtable(new_status);
731 static const char *describe_status(int status_num)
733 int status_want, status_state;
734 if (status_hashtable[status_num] == NULL || status_hashtable[status_num]->status == 0)
735 return "is not installed or flagged to be installed";
737 status_want = get_status(status_num, 1);
738 status_state = get_status(status_num, 3);
740 if (status_state == search_name_hashtable("installed")) {
741 if (status_want == search_name_hashtable("install"))
742 return "is installed";
743 if (status_want == search_name_hashtable("deinstall"))
744 return "is marked to be removed";
745 if (status_want == search_name_hashtable("purge"))
746 return "is marked to be purged";
748 if (status_want == search_name_hashtable("unknown"))
749 return "is in an indeterminate state";
750 if (status_want == search_name_hashtable("install"))
751 return "is marked to be installed";
753 return "is not installed or flagged to be installed";
756 static void index_status_file(const char *filename)
759 char *control_buffer;
761 status_node_t *status_node = NULL;
764 status_file = xfopen_for_read(filename);
765 while ((control_buffer = xmalloc_fgetline_str(status_file, "\n\n")) != NULL) {
766 const unsigned package_num = fill_package_struct(control_buffer);
767 if (package_num != -1) {
768 status_node = xmalloc(sizeof(status_node_t));
769 /* fill_package_struct doesnt handle the status field */
770 status_line = strstr(control_buffer, "Status:");
771 if (status_line != NULL) {
773 status_line += strspn(status_line, " \n\t");
774 status_line = xstrndup(status_line, strcspn(status_line, "\n"));
775 status_node->status = search_name_hashtable(status_line);
778 status_node->package = package_num;
779 status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]);
780 status_hashtable[status_num] = status_node;
782 free(control_buffer);
787 static void write_buffer_no_status(FILE *new_status_file, const char *control_buffer)
793 start += read_package_field(&control_buffer[start], &name, &value);
797 if (strcmp(name, "Status") != 0) {
798 fprintf(new_status_file, "%s: %s\n", name, value);
803 /* This could do with a cleanup */
804 static void write_status_file(deb_file_t **deb_file)
806 FILE *old_status_file = xfopen_for_read("/var/lib/dpkg/status");
807 FILE *new_status_file = xfopen_for_write("/var/lib/dpkg/status.udeb");
809 char *status_from_file;
810 char *control_buffer = NULL;
817 /* Update previously known packages */
818 while ((control_buffer = xmalloc_fgetline_str(old_status_file, "\n\n")) != NULL) {
819 tmp_string = strstr(control_buffer, "Package:");
820 if (tmp_string == NULL) {
825 tmp_string += strspn(tmp_string, " \n\t");
826 package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
828 tmp_string = strstr(control_buffer, "Status:");
829 if (tmp_string != NULL) {
830 /* Separate the status value from the control buffer */
832 tmp_string += strspn(tmp_string, " \n\t");
833 status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
835 status_from_file = NULL;
838 /* Find this package in the status hashtable */
839 status_num = search_status_hashtable(package_name);
840 if (status_hashtable[status_num] != NULL) {
841 const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status];
842 if (strcmp(status_from_file, status_from_hashtable) != 0) {
843 /* New status isnt exactly the same as old status */
844 const int state_status = get_status(status_num, 3);
845 if ((strcmp("installed", name_hashtable[state_status]) == 0)
846 || (strcmp("unpacked", name_hashtable[state_status]) == 0)
848 /* We need to add the control file from the package */
850 while (deb_file[i] != NULL) {
851 if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) {
852 /* Write a status file entry with a modified status */
853 /* remove trailing \n's */
854 write_buffer_no_status(new_status_file, deb_file[i]->control_file);
855 set_status(status_num, "ok", 2);
856 fprintf(new_status_file, "Status: %s\n\n",
857 name_hashtable[status_hashtable[status_num]->status]);
863 /* This is temperary, debugging only */
864 if (deb_file[i] == NULL) {
865 bb_error_msg_and_die("ALERT: cannot find a control file, "
866 "your status file may be broken, status may be "
867 "incorrect for %s", package_name);
870 else if (strcmp("not-installed", name_hashtable[state_status]) == 0) {
871 /* Only write the Package, Status, Priority and Section lines */
872 fprintf(new_status_file, "Package: %s\n", package_name);
873 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
878 field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
879 if (field_name == NULL) {
882 if ((strcmp(field_name, "Priority") == 0)
883 || (strcmp(field_name, "Section") == 0)
885 fprintf(new_status_file, "%s: %s\n", field_name, field_value);
889 fputs("\n", new_status_file);
891 else if (strcmp("config-files", name_hashtable[state_status]) == 0) {
892 /* only change the status line */
896 field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
897 if (field_name == NULL) {
900 /* Setup start point for next field */
901 if (strcmp(field_name, "Status") == 0) {
902 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
904 fprintf(new_status_file, "%s: %s\n", field_name, field_value);
908 fputs("\n", new_status_file);
912 /* If the package from the status file wasnt handle above, do it now*/
914 fprintf(new_status_file, "%s\n\n", control_buffer);
917 free(status_from_file);
919 free(control_buffer);
922 /* Write any new packages */
923 for (i = 0; deb_file[i] != NULL; i++) {
924 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]);
925 if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) {
926 write_buffer_no_status(new_status_file, deb_file[i]->control_file);
927 set_status(status_num, "ok", 2);
928 fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
931 fclose(old_status_file);
932 fclose(new_status_file);
934 /* Create a separate backfile to dpkg */
935 if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) {
937 bb_error_msg_and_die("can't create backup status file");
938 /* Its ok if renaming the status file fails because status
939 * file doesnt exist, maybe we are starting from scratch */
940 bb_error_msg("no status file found, creating new one");
943 xrename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status");
946 /* This function returns TRUE if the given package can satisfy a
947 * dependency of type depend_type.
949 * A pre-depends is satisfied only if a package is already installed,
950 * which a regular depends can be satisfied by a package which we want
953 static int package_satisfies_dependency(int package, int depend_type)
955 int status_num = search_status_hashtable(name_hashtable[package_hashtable[package]->name]);
957 /* status could be unknown if package is a pure virtual
958 * provides which cannot satisfy any dependency by itself.
960 if (status_hashtable[status_num] == NULL)
963 switch (depend_type) {
964 case EDGE_PRE_DEPENDS: return get_status(status_num, 3) == search_name_hashtable("installed");
965 case EDGE_DEPENDS: return get_status(status_num, 1) == search_name_hashtable("install");
970 static int check_deps(deb_file_t **deb_file, int deb_start /*, int dep_max_count - ?? */)
972 int *conflicts = NULL;
973 int conflicts_num = 0;
977 /* Check for conflicts
978 * TODO: TEST if conflicts with other packages to be installed
980 * Add install packages and the packages they provide
981 * to the list of files to check conflicts for
984 /* Create array of package numbers to check against
985 * installed package for conflicts*/
986 while (deb_file[i] != NULL) {
987 const unsigned package_num = deb_file[i]->package;
988 conflicts = xrealloc_vector(conflicts, 2, conflicts_num);
989 conflicts[conflicts_num] = package_num;
991 /* add provides to conflicts list */
992 for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) {
993 if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) {
994 const int conflicts_package_num = search_package_hashtable(
995 package_hashtable[package_num]->edge[j]->name,
996 package_hashtable[package_num]->edge[j]->version,
997 package_hashtable[package_num]->edge[j]->operator);
998 if (package_hashtable[conflicts_package_num] == NULL) {
999 /* create a new package */
1000 common_node_t *new_node = xzalloc(sizeof(common_node_t));
1001 new_node->name = package_hashtable[package_num]->edge[j]->name;
1002 new_node->version = package_hashtable[package_num]->edge[j]->version;
1003 package_hashtable[conflicts_package_num] = new_node;
1005 conflicts = xrealloc_vector(conflicts, 2, conflicts_num);
1006 conflicts[conflicts_num] = conflicts_package_num;
1013 /* Check conflicts */
1015 while (deb_file[i] != NULL) {
1016 const common_node_t *package_node = package_hashtable[deb_file[i]->package];
1018 status_num = search_status_hashtable(name_hashtable[package_node->name]);
1020 if (get_status(status_num, 3) == search_name_hashtable("installed")) {
1025 for (j = 0; j < package_node->num_of_edges; j++) {
1026 const edge_t *package_edge = package_node->edge[j];
1028 if (package_edge->type == EDGE_CONFLICTS) {
1029 const unsigned package_num =
1030 search_package_hashtable(package_edge->name,
1031 package_edge->version,
1032 package_edge->operator);
1034 if (package_hashtable[package_num] != NULL) {
1035 status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
1037 if (get_status(status_num, 1) == search_name_hashtable("install")) {
1038 result = test_version(package_hashtable[deb_file[i]->package]->version,
1039 package_edge->version, package_edge->operator);
1044 bb_error_msg_and_die("package %s conflicts with %s",
1045 name_hashtable[package_node->name],
1046 name_hashtable[package_edge->name]);
1054 /* Check dependendcies */
1055 for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
1057 int number_of_alternatives = 0;
1058 const edge_t * root_of_alternatives = NULL;
1059 const common_node_t *package_node = package_hashtable[i];
1061 /* If the package node does not exist then this
1062 * package is a virtual one. In which case there are
1063 * no dependencies to check.
1065 if (package_node == NULL) continue;
1067 status_num = search_status_hashtable(name_hashtable[package_node->name]);
1069 /* If there is no status then this package is a
1070 * virtual one provided by something else. In which
1071 * case there are no dependencies to check.
1073 if (status_hashtable[status_num] == NULL) continue;
1075 /* If we don't want this package installed then we may
1076 * as well ignore it's dependencies.
1078 if (get_status(status_num, 1) != search_name_hashtable("install")) {
1082 /* This code is tested only for EDGE_DEPENDS, since I
1083 * have no suitable pre-depends available. There is no
1084 * reason that it shouldn't work though :-)
1086 for (j = 0; j < package_node->num_of_edges; j++) {
1087 const edge_t *package_edge = package_node->edge[j];
1088 unsigned package_num;
1090 if (package_edge->type == EDGE_OR_PRE_DEPENDS
1091 || package_edge->type == EDGE_OR_DEPENDS
1093 /* start an EDGE_OR_ list */
1094 number_of_alternatives = package_edge->version;
1095 root_of_alternatives = package_edge;
1098 if (number_of_alternatives == 0) { /* not in the middle of an EDGE_OR_ list */
1099 number_of_alternatives = 1;
1100 root_of_alternatives = NULL;
1103 package_num = search_package_hashtable(package_edge->name, package_edge->version, package_edge->operator);
1105 if (package_edge->type == EDGE_PRE_DEPENDS
1106 || package_edge->type == EDGE_DEPENDS
1111 /* If we are inside an alternative then check
1112 * this edge is the right type.
1114 * EDGE_DEPENDS == OR_DEPENDS -1
1115 * EDGE_PRE_DEPENDS == OR_PRE_DEPENDS -1
1117 if (root_of_alternatives && package_edge->type != root_of_alternatives->type - 1)
1118 bb_error_msg_and_die("fatal error, package dependencies corrupt: %d != %d - 1",
1119 package_edge->type, root_of_alternatives->type);
1121 if (package_hashtable[package_num] != NULL)
1122 result = !package_satisfies_dependency(package_num, package_edge->type);
1124 if (result) { /* check for other package which provide what we are looking for */
1127 while ((provider = search_for_provides(package_edge->name, provider)) > -1) {
1128 if (package_hashtable[provider] == NULL) {
1129 puts("Have a provider but no package information for it");
1132 result = !package_satisfies_dependency(provider, package_edge->type);
1139 /* It must be already installed, or to be installed */
1140 number_of_alternatives--;
1141 if (result && number_of_alternatives == 0) {
1142 if (root_of_alternatives)
1143 bb_error_msg_and_die(
1144 "package %s %sdepends on %s, "
1145 "which cannot be satisfied",
1146 name_hashtable[package_node->name],
1147 package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
1148 name_hashtable[root_of_alternatives->name]);
1149 bb_error_msg_and_die(
1150 "package %s %sdepends on %s, which %s\n",
1151 name_hashtable[package_node->name],
1152 package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
1153 name_hashtable[package_edge->name],
1154 describe_status(status_num));
1156 if (result == 0 && number_of_alternatives) {
1157 /* we've found a package which
1158 * satisfies the dependency,
1159 * so skip over the rest of
1162 j += number_of_alternatives;
1163 number_of_alternatives = 0;
1172 static char **create_list(const char *filename)
1179 /* don't use [xw]fopen here, handle error ourself */
1180 list_stream = fopen_for_read(filename);
1181 if (list_stream == NULL) {
1187 while ((line = xmalloc_fgetline(list_stream)) != NULL) {
1188 file_list = xrealloc_vector(file_list, 2, count);
1189 file_list[count++] = line;
1190 /*file_list[count] = NULL; - xrealloc_vector did it */
1192 fclose(list_stream);
1197 /* maybe i should try and hook this into remove_file.c somehow */
1198 static int remove_file_array(char **remove_names, char **exclude_names)
1200 struct stat path_stat;
1201 int remove_flag = 1; /* not removed anything yet */
1204 if (remove_names == NULL) {
1207 for (i = 0; remove_names[i] != NULL; i++) {
1208 if (exclude_names != NULL) {
1209 for (j = 0; exclude_names[j] != NULL; j++) {
1210 if (strcmp(remove_names[i], exclude_names[j]) == 0) {
1215 /* TODO: why we are checking lstat? we can just try rm/rmdir */
1216 if (lstat(remove_names[i], &path_stat) < 0) {
1219 if (S_ISDIR(path_stat.st_mode)) {
1220 remove_flag &= rmdir(remove_names[i]); /* 0 if no error */
1222 remove_flag &= unlink(remove_names[i]); /* 0 if no error */
1227 return (remove_flag == 0);
1230 static void run_package_script_or_die(const char *package_name, const char *script_type)
1235 script_path = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, script_type);
1237 /* If the file doesnt exist is isnt fatal */
1238 result = access(script_path, F_OK) ? EXIT_SUCCESS : system(script_path);
1241 bb_error_msg_and_die("%s failed, exit code %d", script_type, result);
1245 The policy manual defines what scripts get called when and with
1246 what arguments. I realize that busybox does not support all of
1247 these scenarios, but it does support some of them; it does not,
1248 however, run them with any parameters in run_package_script_or_die().
1249 Here are the scripts:
1252 preinst install <old_version>
1253 preinst upgrade <old_version>
1254 preinst abort_upgrade <new_version>
1255 postinst configure <most_recent_version>
1256 postinst abort-upgade <new_version>
1257 postinst abort-remove
1258 postinst abort-remove in-favour <package> <version>
1259 postinst abort-deconfigure in-favor <failed_install_package> removing <conflicting_package> <version>
1261 prerm upgrade <new_version>
1262 prerm failed-upgrade <old_version>
1263 prerm remove in-favor <package> <new_version>
1264 prerm deconfigure in-favour <package> <version> removing <package> <version>
1267 postrm upgrade <new_version>
1268 postrm failed-upgrade <old_version>
1269 postrm abort-install
1270 postrm abort-install <old_version>
1271 postrm abort-upgrade <old_version>
1272 postrm disappear <overwriter> <version>
1274 static const char *const all_control_files[] = {
1275 "preinst", "postinst", "prerm", "postrm",
1276 "list", "md5sums", "shlibs", "conffiles",
1277 "config", "templates"
1280 static char **all_control_list(const char *package_name)
1283 char **remove_files;
1285 /* Create a list of all /var/lib/dpkg/info/<package> files */
1286 remove_files = xzalloc(sizeof(all_control_files) + sizeof(char*));
1287 while (i < ARRAY_SIZE(all_control_files)) {
1288 remove_files[i] = xasprintf("/var/lib/dpkg/info/%s.%s",
1289 package_name, all_control_files[i]);
1293 return remove_files;
1296 static void free_array(char **array)
1308 /* This function lists information on the installed packages. It loops through
1309 * the status_hashtable to retrieve the info. This results in smaller code than
1310 * scanning the status file. The resulting list, however, is unsorted.
1312 static void list_packages(const char *pattern)
1316 puts(" Name Version");
1317 puts("+++-==============-==============");
1319 /* go through status hash, dereference package hash and finally strings */
1320 for (i = 0; i < STATUS_HASH_PRIME+1; i++) {
1321 if (status_hashtable[i]) {
1322 const char *stat_str; /* status string */
1323 const char *name_str; /* package name */
1324 const char *vers_str; /* version */
1325 char s1, s2; /* status abbreviations */
1326 int spccnt; /* space count */
1329 stat_str = name_hashtable[status_hashtable[i]->status];
1330 name_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->name];
1331 vers_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->version];
1333 if (pattern && fnmatch(pattern, name_str, 0) != 0)
1336 /* get abbreviation for status field 1 */
1337 s1 = stat_str[0] == 'i' ? 'i' : 'r';
1339 /* get abbreviation for status field 2 */
1340 for (j = 0, spccnt = 0; stat_str[j] && spccnt < 2; j++) {
1341 if (stat_str[j] == ' ') spccnt++;
1345 /* print out the line formatted like Debian dpkg */
1346 printf("%c%c %-14s %s\n", s1, s2, name_str, vers_str);
1351 static void remove_package(const unsigned package_num, int noisy)
1353 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
1354 const char *package_version = name_hashtable[package_hashtable[package_num]->version];
1355 const unsigned status_num = search_status_hashtable(package_name);
1356 const int package_name_length = strlen(package_name);
1357 char **remove_files;
1358 char **exclude_files;
1359 char list_name[package_name_length + 25];
1360 char conffile_name[package_name_length + 30];
1363 printf("Removing %s (%s)...\n", package_name, package_version);
1365 /* Run prerm script */
1366 run_package_script_or_die(package_name, "prerm");
1368 /* Create a list of files to remove, and a separate list of those to keep */
1369 sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list");
1370 remove_files = create_list(list_name);
1372 sprintf(conffile_name, "/var/lib/dpkg/info/%s.%s", package_name, "conffiles");
1373 exclude_files = create_list(conffile_name);
1375 /* Some directories can't be removed straight away, so do multiple passes */
1376 while (remove_file_array(remove_files, exclude_files))
1378 free_array(exclude_files);
1379 free_array(remove_files);
1381 /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */
1382 exclude_files = xzalloc(sizeof(exclude_files[0]) * 3);
1383 exclude_files[0] = xstrdup(conffile_name);
1384 exclude_files[1] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm");
1386 /* Create a list of all /var/lib/dpkg/info/<package> files */
1387 remove_files = all_control_list(package_name);
1389 remove_file_array(remove_files, exclude_files);
1390 free_array(remove_files);
1391 free_array(exclude_files);
1393 /* rename <package>.conffiles to <package>.list
1394 * The conffiles control file isn't required in Debian packages, so don't
1395 * error out if it's missing. */
1396 rename(conffile_name, list_name);
1398 /* Change package status */
1399 set_status(status_num, "config-files", 3);
1402 static void purge_package(const unsigned package_num)
1404 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
1405 const char *package_version = name_hashtable[package_hashtable[package_num]->version];
1406 const unsigned status_num = search_status_hashtable(package_name);
1407 char **remove_files;
1408 char **exclude_files;
1409 char list_name[strlen(package_name) + 25];
1411 printf("Purging %s (%s)...\n", package_name, package_version);
1413 /* Run prerm script */
1414 run_package_script_or_die(package_name, "prerm");
1416 /* Create a list of files to remove */
1417 sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list");
1418 remove_files = create_list(list_name);
1420 /* Some directories cant be removed straight away, so do multiple passes */
1421 while (remove_file_array(remove_files, NULL))
1423 free_array(remove_files);
1425 /* Create a list of all /var/lib/dpkg/info/<package> files */
1426 remove_files = all_control_list(package_name);
1428 /* Delete all of them except the postrm script */
1429 exclude_files = xzalloc(sizeof(exclude_files[0]) * 2);
1430 exclude_files[0] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm");
1431 remove_file_array(remove_files, exclude_files);
1432 free_array(exclude_files);
1434 /* Run and remove postrm script */
1435 run_package_script_or_die(package_name, "postrm");
1436 remove_file_array(remove_files, NULL);
1438 free_array(remove_files);
1440 /* Change package status */
1441 set_status(status_num, "not-installed", 3);
1444 static archive_handle_t *init_archive_deb_ar(const char *filename)
1446 archive_handle_t *ar_handle;
1448 /* Setup an ar archive handle that refers to the gzip sub archive */
1449 ar_handle = init_handle();
1450 ar_handle->filter = filter_accept_list_reassign;
1451 ar_handle->src_fd = xopen(filename, O_RDONLY);
1456 static void init_archive_deb_control(archive_handle_t *ar_handle)
1458 archive_handle_t *tar_handle;
1460 /* Setup the tar archive handle */
1461 tar_handle = init_handle();
1462 tar_handle->src_fd = ar_handle->src_fd;
1464 /* We don't care about data.tar.* or debian-binary, just control.tar.* */
1465 #if ENABLE_FEATURE_SEAMLESS_GZ
1466 llist_add_to(&(ar_handle->accept), (char*)"control.tar.gz");
1468 #if ENABLE_FEATURE_SEAMLESS_BZ2
1469 llist_add_to(&(ar_handle->accept), (char*)"control.tar.bz2");
1472 /* Assign the tar handle as a subarchive of the ar handle */
1473 ar_handle->dpkg__sub_archive = tar_handle;
1476 static void init_archive_deb_data(archive_handle_t *ar_handle)
1478 archive_handle_t *tar_handle;
1480 /* Setup the tar archive handle */
1481 tar_handle = init_handle();
1482 tar_handle->src_fd = ar_handle->src_fd;
1484 /* We don't care about control.tar.* or debian-binary, just data.tar.* */
1485 #if ENABLE_FEATURE_SEAMLESS_GZ
1486 llist_add_to(&(ar_handle->accept), (char*)"data.tar.gz");
1488 #if ENABLE_FEATURE_SEAMLESS_BZ2
1489 llist_add_to(&(ar_handle->accept), (char*)"data.tar.bz2");
1492 /* Assign the tar handle as a subarchive of the ar handle */
1493 ar_handle->dpkg__sub_archive = tar_handle;
1496 static void FAST_FUNC data_extract_to_buffer(archive_handle_t *archive_handle)
1498 unsigned size = archive_handle->file_header->size;
1500 archive_handle->dpkg__buffer = xzalloc(size + 1);
1501 xread(archive_handle->src_fd, archive_handle->dpkg__buffer, size);
1504 static char *deb_extract_control_file_to_buffer(archive_handle_t *ar_handle, llist_t *myaccept)
1506 ar_handle->dpkg__sub_archive->action_data = data_extract_to_buffer;
1507 ar_handle->dpkg__sub_archive->accept = myaccept;
1508 ar_handle->dpkg__sub_archive->filter = filter_accept_list;
1510 unpack_ar_archive(ar_handle);
1511 close(ar_handle->src_fd);
1513 return ar_handle->dpkg__sub_archive->dpkg__buffer;
1516 static void append_control_file_to_llist(const char *package_name, const char *control_name, llist_t **ll)
1519 char *filename, *line;
1521 filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, control_name);
1522 fp = fopen_for_read(filename);
1525 while ((line = xmalloc_fgetline(fp)) != NULL)
1526 llist_add_to(ll, line);
1531 static char FAST_FUNC filter_rename_config(archive_handle_t *archive_handle)
1534 char *name_ptr = archive_handle->file_header->name + 1;
1536 /* Is this file marked as config file? */
1537 if (!find_list_entry(archive_handle->accept, name_ptr))
1538 return EXIT_SUCCESS; /* no */
1540 fd = open(name_ptr, O_RDONLY);
1543 char *md5line, *buf;
1546 /* Calculate MD5 of existing file */
1547 buf = xmalloc(4096);
1549 while ((count = safe_read(fd, buf, 4096)) > 0)
1550 md5_hash(&md5, buf, count);
1551 md5_end(&md5, buf); /* using buf as result storage */
1554 md5line = xmalloc(16 * 2 + 2 + strlen(name_ptr) + 1);
1555 sprintf(bin2hex(md5line, buf, 16), " %s", name_ptr);
1558 /* Is it changed after install? */
1559 if (find_list_entry(archive_handle->accept, md5line) == NULL) {
1560 printf("Warning: Creating %s as %s.dpkg-new\n", name_ptr, name_ptr);
1561 archive_handle->file_header->name = xasprintf("%s.dpkg-new", archive_handle->file_header->name);
1565 return EXIT_SUCCESS;
1568 static void FAST_FUNC data_extract_all_prefix(archive_handle_t *archive_handle)
1570 char *name_ptr = archive_handle->file_header->name;
1572 /* Skip all leading "/" */
1573 while (*name_ptr == '/')
1575 /* Skip all leading "./" and "../" */
1576 while (name_ptr[0] == '.') {
1577 if (name_ptr[1] == '.')
1579 if (name_ptr[1] != '/')
1584 if (name_ptr[0] != '\0') {
1585 archive_handle->file_header->name = xasprintf("%s%s", archive_handle->dpkg__buffer, name_ptr);
1586 data_extract_all(archive_handle);
1587 if (fnmatch("*.dpkg-new", archive_handle->file_header->name, 0) == 0) {
1588 /* remove .dpkg-new suffix */
1589 archive_handle->file_header->name[strlen(archive_handle->file_header->name) - 9] = '\0';
1596 OPT_configure = (1 << 0),
1597 OPT_install = (1 << 1),
1598 OPT_list_installed = (1 << 2),
1599 OPT_purge = (1 << 3),
1600 OPT_remove = (1 << 4),
1601 OPT_unpack = (1 << 5),
1602 OPTMASK_cmd = (1 << 6) - 1,
1604 OPT_force = (1 << 6),
1605 OPT_force_ignore_depends = (1 << 7),
1606 OPT_force_confnew = (1 << 8),
1607 OPT_force_confold = (1 << 9),
1610 static void unpack_package(deb_file_t *deb_file)
1612 const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
1613 const unsigned status_num = search_status_hashtable(package_name);
1614 const unsigned status_package_num = status_hashtable[status_num]->package;
1616 char *list_filename;
1617 archive_handle_t *archive_handle;
1619 llist_t *accept_list;
1620 llist_t *conffile_list;
1623 /* If existing version, remove it first */
1624 conffile_list = NULL;
1625 if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) {
1626 /* Package is already installed, remove old version first */
1627 printf("Preparing to replace %s %s (using %s)...\n", package_name,
1628 name_hashtable[package_hashtable[status_package_num]->version],
1629 deb_file->filename);
1631 /* Read md5sums from old package */
1632 if (!(option_mask32 & OPT_force_confold))
1633 append_control_file_to_llist(package_name, "md5sums", &conffile_list);
1635 remove_package(status_package_num, 0);
1637 printf("Unpacking %s (from %s)...\n", package_name, deb_file->filename);
1640 /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
1641 info_prefix = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "");
1642 archive_handle = init_archive_deb_ar(deb_file->filename);
1643 init_archive_deb_control(archive_handle);
1647 while (i < ARRAY_SIZE(all_control_files)) {
1648 char *c = xasprintf("./%s", all_control_files[i]);
1649 llist_add_to(&accept_list, c);
1652 archive_handle->dpkg__sub_archive->accept = accept_list;
1653 archive_handle->dpkg__sub_archive->filter = filter_accept_list;
1654 archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix;
1655 archive_handle->dpkg__sub_archive->dpkg__buffer = info_prefix;
1656 archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_UNLINK_OLD;
1657 unpack_ar_archive(archive_handle);
1659 /* Run the preinst prior to extracting */
1660 run_package_script_or_die(package_name, "preinst");
1662 /* Don't overwrite existing config files */
1663 if (!(option_mask32 & OPT_force_confnew))
1664 append_control_file_to_llist(package_name, "conffiles", &conffile_list);
1666 /* Extract data.tar.gz to the root directory */
1667 archive_handle = init_archive_deb_ar(deb_file->filename);
1668 init_archive_deb_data(archive_handle);
1669 archive_handle->dpkg__sub_archive->accept = conffile_list;
1670 /* Why ARCHIVE_REMEMBER_NAMES?
1671 * We want names collected in ->passed list even if conffile_list
1672 * is NULL (otherwise get_header_tar may optimize name saving out):
1674 archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_REMEMBER_NAMES | ARCHIVE_UNLINK_OLD;
1675 archive_handle->dpkg__sub_archive->filter = filter_rename_config;
1676 archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix;
1677 archive_handle->dpkg__sub_archive->dpkg__buffer = (char*)"/"; /* huh? */
1678 unpack_ar_archive(archive_handle);
1680 /* Create the list file */
1681 list_filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "list");
1682 out_stream = xfopen_for_write(list_filename);
1683 archive_handle->dpkg__sub_archive->passed = llist_rev(archive_handle->dpkg__sub_archive->passed);
1684 while (archive_handle->dpkg__sub_archive->passed) {
1685 char *filename = llist_pop(&archive_handle->dpkg__sub_archive->passed);
1686 /* the leading . has been stripped by data_extract_all_prefix already */
1687 fprintf(out_stream, "%s\n", filename);
1693 set_status(status_num, "install", 1);
1694 set_status(status_num, "unpacked", 3);
1697 free(list_filename);
1700 static void configure_package(deb_file_t *deb_file)
1702 const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
1703 const char *package_version = name_hashtable[package_hashtable[deb_file->package]->version];
1704 const int status_num = search_status_hashtable(package_name);
1706 printf("Setting up %s (%s)...\n", package_name, package_version);
1708 /* Run the postinst script */
1709 /* TODO: handle failure gracefully */
1710 run_package_script_or_die(package_name, "postinst");
1712 /* Change status to reflect success */
1713 set_status(status_num, "install", 1);
1714 set_status(status_num, "installed", 3);
1717 int dpkg_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
1718 int dpkg_main(int argc UNUSED_PARAM, char **argv)
1720 deb_file_t **deb_file = NULL;
1721 status_node_t *status_node;
1729 #if ENABLE_LONG_OPTS
1730 static const char dpkg_longopts[] ALIGN1 =
1731 // FIXME: we use -C non-compatibly, should be:
1732 // "-C|--audit Check for broken package(s)"
1733 "configure\0" No_argument "C"
1734 "force\0" Required_argument "F"
1735 "install\0" No_argument "i"
1736 "list\0" No_argument "l"
1737 "purge\0" No_argument "P"
1738 "remove\0" No_argument "r"
1739 "unpack\0" No_argument "u"
1740 "force-depends\0" No_argument "\xff"
1741 "force-confnew\0" No_argument "\xfe"
1742 "force-confold\0" No_argument "\xfd"
1748 IF_LONG_OPTS(applet_long_options = dpkg_longopts);
1749 opt = getopt32(argv, "CilPruF:", &str_f);
1751 //if (opt & OPT_configure) ... // -C
1752 if (opt & OPT_force) { // -F (--force in official dpkg)
1753 if (strcmp(str_f, "depends") == 0)
1754 opt |= OPT_force_ignore_depends;
1755 else if (strcmp(str_f, "confnew") == 0)
1756 opt |= OPT_force_confnew;
1757 else if (strcmp(str_f, "confold") == 0)
1758 opt |= OPT_force_confold;
1761 option_mask32 = opt;
1763 //if (opt & OPT_install) ... // -i
1764 //if (opt & OPT_list_installed) ... // -l
1765 //if (opt & OPT_purge) ... // -P
1766 //if (opt & OPT_remove) ... // -r
1767 //if (opt & OPT_unpack) ... // -u (--unpack in official dpkg)
1768 if (!(opt & OPTMASK_cmd) /* no cmd */
1769 || ((opt & OPTMASK_cmd) & ((opt & OPTMASK_cmd)-1)) /* more than one cmd */
1774 /* puts("(Reading database ... xxxxx files and directories installed.)"); */
1775 index_status_file("/var/lib/dpkg/status");
1777 /* if the list action was given print the installed packages and exit */
1778 if (opt & OPT_list_installed) {
1779 list_packages(argv[0]); /* param can be NULL */
1780 return EXIT_SUCCESS;
1783 /* Read arguments and store relevant info in structs */
1785 /* deb_count = nb_elem - 1 and we need nb_elem + 1 to allocate terminal node [NULL pointer] */
1786 deb_file = xrealloc_vector(deb_file, 2, deb_count);
1787 deb_file[deb_count] = xzalloc(sizeof(deb_file[0][0]));
1788 if (opt & (OPT_install | OPT_unpack)) {
1789 /* -i/-u: require filename */
1790 archive_handle_t *archive_handle;
1791 llist_t *control_list = NULL;
1793 /* Extract the control file */
1794 llist_add_to(&control_list, (char*)"./control");
1795 archive_handle = init_archive_deb_ar(argv[0]);
1796 init_archive_deb_control(archive_handle);
1797 deb_file[deb_count]->control_file = deb_extract_control_file_to_buffer(archive_handle, control_list);
1798 if (deb_file[deb_count]->control_file == NULL) {
1799 bb_error_msg_and_die("can't extract control file");
1801 deb_file[deb_count]->filename = xstrdup(argv[0]);
1802 package_num = fill_package_struct(deb_file[deb_count]->control_file);
1804 if (package_num == -1) {
1805 bb_error_msg("invalid control file in %s", argv[0]);
1809 deb_file[deb_count]->package = (unsigned) package_num;
1811 /* Add the package to the status hashtable */
1812 if (opt & (OPT_unpack | OPT_install)) {
1813 /* Try and find a currently installed version of this package */
1814 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1815 /* If no previous entry was found initialise a new entry */
1816 if (status_hashtable[status_num] == NULL
1817 || status_hashtable[status_num]->status == 0
1819 status_node = xmalloc(sizeof(status_node_t));
1820 status_node->package = deb_file[deb_count]->package;
1821 /* reinstreq isnt changed to "ok" until the package control info
1822 * is written to the status file*/
1823 status_node->status = search_name_hashtable("install reinstreq not-installed");
1824 status_hashtable[status_num] = status_node;
1826 set_status(status_num, "install", 1);
1827 set_status(status_num, "reinstreq", 2);
1830 } else if (opt & (OPT_configure | OPT_purge | OPT_remove)) {
1831 /* -C/-p/-r: require package name */
1832 deb_file[deb_count]->package = search_package_hashtable(
1833 search_name_hashtable(argv[0]),
1834 search_name_hashtable("ANY"), VER_ANY);
1835 if (package_hashtable[deb_file[deb_count]->package] == NULL) {
1836 bb_error_msg_and_die("package %s is uninstalled or unknown", argv[0]);
1838 package_num = deb_file[deb_count]->package;
1839 status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
1840 state_status = get_status(status_num, 3);
1842 /* check package status is "installed" */
1843 if (opt & OPT_remove) {
1844 if (strcmp(name_hashtable[state_status], "not-installed") == 0
1845 || strcmp(name_hashtable[state_status], "config-files") == 0
1847 bb_error_msg_and_die("%s is already removed", name_hashtable[package_hashtable[package_num]->name]);
1849 set_status(status_num, "deinstall", 1);
1850 } else if (opt & OPT_purge) {
1851 /* if package status is "conf-files" then its ok */
1852 if (strcmp(name_hashtable[state_status], "not-installed") == 0) {
1853 bb_error_msg_and_die("%s is already purged", name_hashtable[package_hashtable[package_num]->name]);
1855 set_status(status_num, "purge", 1);
1862 bb_error_msg_and_die("no package files specified");
1863 deb_file[deb_count] = NULL;
1865 /* Check that the deb file arguments are installable */
1866 if (!(opt & OPT_force_ignore_depends)) {
1867 if (!check_deps(deb_file, 0 /*, deb_count*/)) {
1868 bb_error_msg_and_die("dependency check failed");
1872 /* TODO: install or remove packages in the correct dependency order */
1873 for (i = 0; i < deb_count; i++) {
1874 /* Remove or purge packages */
1875 if (opt & OPT_remove) {
1876 remove_package(deb_file[i]->package, 1);
1878 else if (opt & OPT_purge) {
1879 purge_package(deb_file[i]->package);
1881 else if (opt & OPT_unpack) {
1882 unpack_package(deb_file[i]);
1884 else if (opt & OPT_install) {
1885 unpack_package(deb_file[i]);
1886 /* package is configured in second pass below */
1888 else if (opt & OPT_configure) {
1889 configure_package(deb_file[i]);
1892 /* configure installed packages */
1893 if (opt & OPT_install) {
1894 for (i = 0; i < deb_count; i++)
1895 configure_package(deb_file[i]);
1898 write_status_file(deb_file);
1900 if (ENABLE_FEATURE_CLEAN_UP) {
1901 for (i = 0; i < deb_count; i++) {
1902 free(deb_file[i]->control_file);
1903 free(deb_file[i]->filename);
1909 for (i = 0; i < NAME_HASH_PRIME; i++) {
1910 free(name_hashtable[i]);
1913 for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
1914 free_package(package_hashtable[i]);
1917 for (i = 0; i < STATUS_HASH_PRIME; i++) {
1918 free(status_hashtable[i]);
1921 free(status_hashtable);
1922 free(package_hashtable);
1923 free(name_hashtable);
1926 return EXIT_SUCCESS;