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Glenn L McGrathccd65c92001-07-13 18:35:24 +00001/*
2 * Mini dpkg implementation for busybox.
3 * This is not meant as a replacemnt for dpkg
4 *
5 * Copyright (C) 2001 by Glenn McGrath
6 *
7 * Started life as a busybox implementation of udpkg
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Library General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 */
Glenn L McGrath649968c2001-02-10 14:26:48 +000023
Glenn L McGrathccd65c92001-07-13 18:35:24 +000024/*
25 * Known difference between busybox dpkg and the official dpkg that i dont
26 * consider important, its worth keeping a note of differences anyway, just to
27 * make it easier to maintain.
28 * - The first value for the Confflile: field isnt placed on a new line.
29 * - The <package>.control file is extracted and kept in the info dir.
30 * - When installing a package the Status: field is placed at the end of the
31 * section, rather than just after the Package: field.
32 * - Packages with previously unknown status are inserted at the begining of
33 * the status file
34 *
35 * Bugs that need to be fixed
36 * - (unknown, please let me know when you find any)
37 *
38 */
39
40#include <getopt.h>
41#include <stdlib.h>
42#include <string.h>
43#include <unistd.h>
Glenn L McGrathc9005752001-02-10 02:05:24 +000044#include "busybox.h"
45
Glenn L McGrathccd65c92001-07-13 18:35:24 +000046/* NOTE: If you vary HASH_PRIME sizes be aware,
47 * 1) Tweaking these will have a big effect on how much memory this program uses.
48 * 2) For computational efficiency these hash tables should be at least 20%
49 * larger than the maximum number of elements stored in it.
50 * 3) All _HASH_PRIME's must be a prime number or chaos is assured, if your looking
51 * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt
52 * 4) If you go bigger than 15 bits you may get into trouble (untested) as its
53 * sometimes cast to an unsigned int, if you go to 16 bit you will overlap
54 * int's and chaos is assured, 16381 is the max prime for 14 bit field
55 */
Glenn L McGrathc9005752001-02-10 02:05:24 +000056
Glenn L McGrathccd65c92001-07-13 18:35:24 +000057/* NAME_HASH_PRIME, Stores package names and versions,
58 * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME,
59 * as there a lot of duplicate version numbers */
60#define NAME_HASH_PRIME 16381
61char *name_hashtable[NAME_HASH_PRIME + 1];
Glenn L McGrathc9005752001-02-10 02:05:24 +000062
Glenn L McGrathccd65c92001-07-13 18:35:24 +000063/* PACKAGE_HASH_PRIME, Maximum number of unique packages,
64 * It must not be smaller than STATUS_HASH_PRIME,
65 * Currently only packages from status_hashtable are stored in here, but in
66 * future this may be used to store packages not only from a status file,
67 * but an available_hashtable, and even multiple packages files.
68 * Package can be stored more than once if they have different versions.
69 * e.g. The same package may have different versions in the status file
70 * and available file */
71#define PACKAGE_HASH_PRIME 10007
72typedef struct edge_s {
73 unsigned int operator:3;
74 unsigned int type:4;
75 unsigned int name:14;
76 unsigned int version:14;
77} edge_t;
Glenn L McGrathc9005752001-02-10 02:05:24 +000078
Glenn L McGrathccd65c92001-07-13 18:35:24 +000079typedef struct common_node_s {
80 unsigned int name:14;
81 unsigned int version:14;
82 unsigned int num_of_edges:14;
83 edge_t **edge;
84} common_node_t;
85common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
Glenn L McGrathc9005752001-02-10 02:05:24 +000086
Glenn L McGrathccd65c92001-07-13 18:35:24 +000087/* Currently it doesnt store packages that have state-status of not-installed
88 * So it only really has to be the size of the maximum number of packages
89 * likely to be installed at any one time, so there is a bit of leaway here */
90#define STATUS_HASH_PRIME 8191
91typedef struct status_node_s {
92 unsigned int package:14; /* has to fit PACKAGE_HASH_PRIME */
93 unsigned int status:14; /* has to fit STATUS_HASH_PRIME */
94} status_node_t;
95status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
Glenn L McGrathd22e5602001-04-11 02:12:08 +000096
Glenn L McGrathccd65c92001-07-13 18:35:24 +000097/* Even numbers are for 'extras', like ored dependecies or null */
98enum edge_type_e {
99 EDGE_NULL = 0,
100 EDGE_PRE_DEPENDS = 1,
101 EDGE_OR_PRE_DEPENDS = 2,
102 EDGE_DEPENDS = 3,
103 EDGE_OR_DEPENDS = 4,
104 EDGE_REPLACES = 5,
105 EDGE_PROVIDES = 7,
106 EDGE_CONFLICTS = 9,
107 EDGE_SUGGESTS = 11,
108 EDGE_RECOMMENDS = 13,
109 EDGE_ENHANCES = 15
110};
111enum operator_e {
112 VER_NULL = 0,
113 VER_EQUAL = 1,
114 VER_LESS = 2,
115 VER_LESS_EQUAL = 3,
116 VER_MORE = 4,
117 VER_MORE_EQUAL = 5,
118 VER_ANY = 6
119};
Glenn L McGrath63106462001-02-11 01:40:23 +0000120
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000121enum dpkg_opt_e {
122 dpkg_opt_purge = 1,
123 dpkg_opt_remove = 2,
124 dpkg_opt_unpack = 4,
125 dpkg_opt_configure = 8,
126 dpkg_opt_install = 16,
127 dpkg_opt_package_name = 32,
128 dpkg_opt_filename = 64,
129 dpkg_opt_list_installed = 128,
130 dpkg_opt_force_ignore_depends = 256
131};
Glenn L McGrathc9005752001-02-10 02:05:24 +0000132
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000133typedef struct deb_file_s {
134 char *control_file;
Glenn L McGrath33431eb2001-04-16 04:52:19 +0000135 char *filename;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000136 unsigned int package:14;
137} deb_file_t;
Glenn L McGrathc9005752001-02-10 02:05:24 +0000138
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000139
140void make_hash(const char *key, unsigned int *start, unsigned int *decrement, const int hash_prime)
Glenn L McGrath63106462001-02-11 01:40:23 +0000141{
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000142 unsigned long int hash_num = key[0];
143 int len = strlen(key);
Glenn L McGrathc9005752001-02-10 02:05:24 +0000144 int i;
Glenn L McGrathc9005752001-02-10 02:05:24 +0000145
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000146 /* Maybe i should have uses a "proper" hashing algorithm here instead
147 * of making one up myself, seems to be working ok though. */
148 for(i = 1; i < len; i++) {
149 /* shifts the ascii based value and adds it to previous value
150 * shift amount is mod 24 because long int is 32 bit and data
151 * to be shifted is 8, dont want to shift data to where it has
152 * no effect*/
153 hash_num += ((key[i] + key[i-1]) << ((key[i] * i) % 24));
Glenn L McGrathc9005752001-02-10 02:05:24 +0000154 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000155 *start = (unsigned int) hash_num % hash_prime;
156 *decrement = (unsigned int) 1 + (hash_num % (hash_prime - 1));
Glenn L McGrathc9005752001-02-10 02:05:24 +0000157}
Glenn L McGrathc9005752001-02-10 02:05:24 +0000158
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000159/* this adds the key to the hash table */
160int search_name_hashtable(const char *key)
Glenn L McGrathc9005752001-02-10 02:05:24 +0000161{
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000162 unsigned int probe_address = 0;
163 unsigned int probe_decrement = 0;
Glenn L McGrath81108e72001-07-19 12:15:13 +0000164// char *temp;
Glenn L McGrath63106462001-02-11 01:40:23 +0000165
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000166 make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME);
167 while(name_hashtable[probe_address] != NULL) {
168 if (strcmp(name_hashtable[probe_address], key) == 0) {
169 return(probe_address);
170 } else {
171 probe_address -= probe_decrement;
172 if ((int)probe_address < 0) {
173 probe_address += NAME_HASH_PRIME;
174 }
Glenn L McGrath63106462001-02-11 01:40:23 +0000175 }
Glenn L McGrathc9005752001-02-10 02:05:24 +0000176 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000177 name_hashtable[probe_address] = xstrdup(key);
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000178 return(probe_address);
179}
180
181/* this DOESNT add the key to the hashtable
182 * TODO make it consistent with search_name_hashtable
183 */
184unsigned int search_status_hashtable(const char *key)
185{
186 unsigned int probe_address = 0;
187 unsigned int probe_decrement = 0;
188
189 make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME);
190 while(status_hashtable[probe_address] != NULL) {
191 if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) {
192 break;
193 } else {
194 probe_address -= probe_decrement;
195 if ((int)probe_address < 0) {
196 probe_address += STATUS_HASH_PRIME;
197 }
198 }
199 }
200 return(probe_address);
201}
202
203/* Need to rethink version comparison, maybe the official dpkg has something i can use ? */
204int version_compare_part(const char *version1, const char *version2)
205{
206 int upstream_len1 = 0;
207 int upstream_len2 = 0;
208 char *name1_char;
209 char *name2_char;
210 int len1 = 0;
211 int len2 = 0;
212 int tmp_int;
213 int ver_num1;
214 int ver_num2;
Glenn L McGrath81108e72001-07-19 12:15:13 +0000215 int ret;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000216
217 if (version1 == NULL) {
218 version1 = xstrdup("");
219 }
220 if (version2 != NULL) {
221 version2 = xstrdup("");
222 }
223 upstream_len1 = strlen(version1);
224 upstream_len2 = strlen(version2);
225
226 while ((len1 < upstream_len1) || (len2 < upstream_len2)) {
227 /* Compare non-digit section */
228 tmp_int = strcspn(&version1[len1], "0123456789");
229 name1_char = xstrndup(&version1[len1], tmp_int);
230 len1 += tmp_int;
231 tmp_int = strcspn(&version2[len2], "0123456789");
232 name2_char = xstrndup(&version2[len2], tmp_int);
233 len2 += tmp_int;
234 tmp_int = strcmp(name1_char, name2_char);
235 free(name1_char);
236 free(name2_char);
237 if (tmp_int != 0) {
Glenn L McGrath81108e72001-07-19 12:15:13 +0000238 ret = tmp_int;
239 goto cleanup_version_compare_part;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000240 }
241
242 /* Compare digits */
243 tmp_int = strspn(&version1[len1], "0123456789");
244 name1_char = xstrndup(&version1[len1], tmp_int);
245 len1 += tmp_int;
246 tmp_int = strspn(&version2[len2], "0123456789");
247 name2_char = xstrndup(&version2[len2], tmp_int);
248 len2 += tmp_int;
249 ver_num1 = atoi(name1_char);
250 ver_num2 = atoi(name2_char);
251 free(name1_char);
252 free(name2_char);
253 if (ver_num1 < ver_num2) {
Glenn L McGrath81108e72001-07-19 12:15:13 +0000254 ret = -1;
255 goto cleanup_version_compare_part;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000256 }
257 else if (ver_num1 > ver_num2) {
Glenn L McGrath81108e72001-07-19 12:15:13 +0000258 ret = 1;
259 goto cleanup_version_compare_part;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000260 }
261 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000262 ret = 0;
263cleanup_version_compare_part:
264 return(ret);
Glenn L McGrathc9005752001-02-10 02:05:24 +0000265}
266
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000267/* if ver1 < ver2 return -1,
268 * if ver1 = ver2 return 0,
269 * if ver1 > ver2 return 1,
Glenn L McGrathc9005752001-02-10 02:05:24 +0000270 */
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000271int version_compare(const unsigned int ver1, const unsigned int ver2)
Glenn L McGrathc9005752001-02-10 02:05:24 +0000272{
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000273 char *ch_ver1 = name_hashtable[ver1];
274 char *ch_ver2 = name_hashtable[ver2];
Glenn L McGrathae1c7042001-04-16 10:26:46 +0000275
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000276 char epoch1, epoch2;
277 char *deb_ver1, *deb_ver2;
278 char *ver1_ptr, *ver2_ptr;
279 char *upstream_ver1;
280 char *upstream_ver2;
281 int result;
282
283 /* Compare epoch */
284 if (ch_ver1[1] == ':') {
285 epoch1 = ch_ver1[0];
286 ver1_ptr = strchr(ch_ver1, ':') + 1;
287 } else {
288 epoch1 = '0';
289 ver1_ptr = ch_ver1;
290 }
291 if (ch_ver2[1] == ':') {
292 epoch2 = ch_ver2[0];
293 ver2_ptr = strchr(ch_ver2, ':') + 1;
294 } else {
295 epoch2 = '0';
296 ver2_ptr = ch_ver2;
297 }
298 if (epoch1 < epoch2) {
299 return(-1);
300 }
301 else if (epoch1 > epoch2) {
302 return(1);
303 }
304
305 /* Compare upstream version */
306 upstream_ver1 = xstrdup(ver1_ptr);
307 upstream_ver2 = xstrdup(ver2_ptr);
308
309 /* Chop off debian version, and store for later use */
310 deb_ver1 = strrchr(upstream_ver1, '-');
311 deb_ver2 = strrchr(upstream_ver2, '-');
312 if (deb_ver1) {
313 deb_ver1[0] = '\0';
314 deb_ver1++;
315 }
316 if (deb_ver2) {
317 deb_ver2[0] = '\0';
318 deb_ver2++;
319 }
320 result = version_compare_part(upstream_ver1, upstream_ver2);
321
322 free(upstream_ver1);
323 free(upstream_ver2);
324
325 if (result != 0) {
326 return(result);
327 }
328
329 /* Compare debian versions */
330 return(version_compare_part(deb_ver1, deb_ver2));
331}
332
333int test_version(const unsigned int version1, const unsigned int version2, const unsigned int operator)
334{
335 const int version_result = version_compare(version1, version2);
336 switch(operator) {
337 case (VER_ANY):
338 return(TRUE);
339 case (VER_EQUAL):
340 if (version_result == 0) {
341 return(TRUE);
342 }
343 break;
344 case (VER_LESS):
345 if (version_result < 0) {
346 return(TRUE);
347 }
348 break;
349 case (VER_LESS_EQUAL):
350 if (version_result <= 0) {
351 return(TRUE);
352 }
353 break;
354 case (VER_MORE):
355 if (version_result > 0) {
356 return(TRUE);
357 }
358 break;
359 case (VER_MORE_EQUAL):
360 if (version_result >= 0) {
361 return(TRUE);
362 }
363 break;
364 }
365 return(FALSE);
366}
367
368
369int search_package_hashtable(const unsigned int name, const unsigned int version, const unsigned int operator)
370{
371 unsigned int probe_address = 0;
372 unsigned int probe_decrement = 0;
373
374 make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME);
375 while(package_hashtable[probe_address] != NULL) {
376 if (package_hashtable[probe_address]->name == name) {
377 if (operator == VER_ANY) {
378 return(probe_address);
379 }
380 if (test_version(package_hashtable[probe_address]->version, version, operator)) {
381 return(probe_address);
382 }
383 }
384 probe_address -= probe_decrement;
385 if ((int)probe_address < 0) {
386 probe_address += PACKAGE_HASH_PRIME;
387 }
388 }
389 return(probe_address);
390}
391
392/*
393 * Create one new node and one new edge for every dependency.
394 */
395void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned int edge_type)
396{
397 char *line = xstrdup(whole_line);
398 char *line2;
399 char *line_ptr1 = NULL;
400 char *line_ptr2 = NULL;
401 char *field;
402 char *field2;
403 char *version;
404 edge_t *edge;
405 int offset_ch;
406 int type;
407
408 field = strtok_r(line, ",", &line_ptr1);
409 do {
410 line2 = xstrdup(field);
411 field2 = strtok_r(line2, "|", &line_ptr2);
412 if ((edge_type == EDGE_DEPENDS) && (strcmp(field, field2) != 0)) {
413 type = EDGE_OR_DEPENDS;
414 }
415 else if ((edge_type == EDGE_PRE_DEPENDS) && (strcmp(field, field2) != 0)) {
416 type = EDGE_OR_PRE_DEPENDS;
417 } else {
418 type = edge_type;
419 }
420
421 do {
422 edge = (edge_t *) xmalloc(sizeof(edge_t));
423 edge->type = type;
424
425 /* Skip any extra leading spaces */
426 field2 += strspn(field2, " ");
427
428 /* Get dependency version info */
429 version = strchr(field2, '(');
430 if (version == NULL) {
431 edge->operator = VER_ANY;
432 /* Get the versions hash number, adding it if the number isnt already in there */
433 edge->version = search_name_hashtable("ANY");
434 } else {
435 /* Skip leading ' ' or '(' */
436 version += strspn(field2, " ");
437 version += strspn(version, "(");
438 /* Calculate length of any operator charactors */
439 offset_ch = strspn(version, "<=>");
440 /* Determine operator */
441 if (offset_ch > 0) {
442 if (strncmp(version, "=", offset_ch) == 0) {
443 edge->operator = VER_EQUAL;
444 }
445 else if (strncmp(version, "<<", offset_ch) == 0) {
446 edge->operator = VER_LESS;
447 }
448 else if (strncmp(version, "<=", offset_ch) == 0) {
449 edge->operator = VER_LESS_EQUAL;
450 }
451 else if (strncmp(version, ">>", offset_ch) == 0) {
452 edge->operator = VER_MORE;
453 }
454 else if (strncmp(version, ">=", offset_ch) == 0) {
455 edge->operator = VER_MORE_EQUAL;
456 } else {
457 error_msg_and_die("Illegal operator\n");
458 }
459 }
460 /* skip to start of version numbers */
461 version += offset_ch;
462 version += strspn(version, " ");
463
464 /* Truncate version at trailing ' ' or ')' */
465 version[strcspn(version, " )")] = '\0';
466 /* Get the versions hash number, adding it if the number isnt already in there */
467 edge->version = search_name_hashtable(version);
468 }
469
470 /* Get the dependency name */
471 field2[strcspn(field2, " (")] = '\0';
472 edge->name = search_name_hashtable(field2);
473
474 /* link the new edge to the current node */
475 parent_node->num_of_edges++;
476 parent_node->edge = xrealloc(parent_node->edge, sizeof(edge_t) * (parent_node->num_of_edges + 1));
477 parent_node->edge[parent_node->num_of_edges - 1] = edge;
478 } while ((field2 = strtok_r(NULL, "|", &line_ptr2)) != NULL);
479 free(line2);
480 } while ((field = strtok_r(NULL, ",", &line_ptr1)) != NULL);
481 free(line);
482
483 return;
484}
485
486void free_package(common_node_t *node)
487{
488 int i;
489 if (node != NULL) {
490 for (i = 0; i < node->num_of_edges; i++) {
491 if (node->edge[i] != NULL) {
492 free(node->edge[i]);
493 }
494 }
495 if (node->edge != NULL) {
496 free(node->edge);
497 }
498 if (node != NULL) {
499 free(node);
500 }
501 }
502}
503
504unsigned int fill_package_struct(char *control_buffer)
505{
506 common_node_t *new_node = (common_node_t *) xcalloc(1, sizeof(common_node_t));
507
Glenn L McGrath81108e72001-07-19 12:15:13 +0000508 char **field_name = xmalloc(sizeof(char *));
509 char **field_value = xmalloc(sizeof(char *));
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000510 int field_start = 0;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000511 int num = -1;
512 int buffer_length = strlen(control_buffer);
513
514 new_node->version = search_name_hashtable("unknown");
515 while (field_start < buffer_length) {
Glenn L McGrath81108e72001-07-19 12:15:13 +0000516 field_start += read_package_field(&control_buffer[field_start], field_name, field_value);
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000517
Glenn L McGrath81108e72001-07-19 12:15:13 +0000518 if (*field_name == NULL) {
Glenn L McGrath58a5bd12001-07-14 06:25:54 +0000519 goto fill_package_struct_cleanup; // Oh no, the dreaded goto statement !!
520 }
521
Glenn L McGrath81108e72001-07-19 12:15:13 +0000522 if (strcmp(*field_name, "Package") == 0) {
523 new_node->name = search_name_hashtable(*field_value);
Glenn L McGrath305fdfa2001-04-08 13:27:39 +0000524 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000525 else if (strcmp(*field_name, "Version") == 0) {
526 new_node->version = search_name_hashtable(*field_value);
Glenn L McGrath305fdfa2001-04-08 13:27:39 +0000527 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000528 else if (strcmp(*field_name, "Pre-Depends") == 0) {
529 add_split_dependencies(new_node, *field_value, EDGE_PRE_DEPENDS);
Glenn L McGrath305fdfa2001-04-08 13:27:39 +0000530 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000531 else if (strcmp(*field_name, "Depends") == 0) {
532 add_split_dependencies(new_node, *field_value, EDGE_DEPENDS);
Glenn L McGrath305fdfa2001-04-08 13:27:39 +0000533 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000534 else if (strcmp(*field_name, "Replaces") == 0) {
535 add_split_dependencies(new_node, *field_value, EDGE_REPLACES);
Glenn L McGrathc9005752001-02-10 02:05:24 +0000536 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000537 else if (strcmp(*field_name, "Provides") == 0) {
538 add_split_dependencies(new_node, *field_value, EDGE_PROVIDES);
Glenn L McGrath33431eb2001-04-16 04:52:19 +0000539 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000540 else if (strcmp(*field_name, "Conflicts") == 0) {
541 add_split_dependencies(new_node, *field_value, EDGE_CONFLICTS);
Glenn L McGrath33431eb2001-04-16 04:52:19 +0000542 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000543 else if (strcmp(*field_name, "Suggests") == 0) {
544 add_split_dependencies(new_node, *field_value, EDGE_SUGGESTS);
Glenn L McGrath33431eb2001-04-16 04:52:19 +0000545 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000546 else if (strcmp(*field_name, "Recommends") == 0) {
547 add_split_dependencies(new_node, *field_value, EDGE_RECOMMENDS);
Glenn L McGrath33431eb2001-04-16 04:52:19 +0000548 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000549 else if (strcmp(*field_name, "Enhances") == 0) {
550 add_split_dependencies(new_node, *field_value, EDGE_ENHANCES);
Glenn L McGrath33431eb2001-04-16 04:52:19 +0000551 }
Glenn L McGrath58a5bd12001-07-14 06:25:54 +0000552fill_package_struct_cleanup:
Glenn L McGrath81108e72001-07-19 12:15:13 +0000553 if (*field_name) {
554 free(*field_name);
555 }
556 if (*field_value) {
557 free(*field_value);
558 }
Glenn L McGrathc9005752001-02-10 02:05:24 +0000559 }
Glenn L McGrath81108e72001-07-19 12:15:13 +0000560 free(field_name);
561 free(field_value);
562
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000563 if (new_node->version == search_name_hashtable("unknown")) {
564 free_package(new_node);
565 return(-1);
566 }
567 num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL);
568 if (package_hashtable[num] == NULL) {
569 package_hashtable[num] = new_node;
570 } else {
571 free_package(new_node);
572 }
573 return(num);
Glenn L McGrathc9005752001-02-10 02:05:24 +0000574}
575
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000576/* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
577unsigned int get_status(const unsigned int status_node, const int num)
Glenn L McGrathae1c7042001-04-16 10:26:46 +0000578{
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000579 char *status_string = name_hashtable[status_hashtable[status_node]->status];
580 char *state_sub_string;
581 unsigned int state_sub_num;
582 int len;
583 int i;
584
585 /* set tmp_string to point to the start of the word number */
586 for (i = 1; i < num; i++) {
587 /* skip past a word */
588 status_string += strcspn(status_string, " ");
589 /* skip past the seperating spaces */
590 status_string += strspn(status_string, " ");
Glenn L McGrathae1c7042001-04-16 10:26:46 +0000591 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000592 len = strcspn(status_string, " \n\0");
593 state_sub_string = xstrndup(status_string, len);
594 state_sub_num = search_name_hashtable(state_sub_string);
595 free(state_sub_string);
596 return(state_sub_num);
Glenn L McGrathae1c7042001-04-16 10:26:46 +0000597}
598
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000599void set_status(const unsigned int status_node_num, const char *new_value, const int position)
Glenn L McGrathc9005752001-02-10 02:05:24 +0000600{
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000601 const unsigned int new_value_len = strlen(new_value);
602 const unsigned int new_value_num = search_name_hashtable(new_value);
603 unsigned int want = get_status(status_node_num, 1);
604 unsigned int flag = get_status(status_node_num, 2);
605 unsigned int status = get_status(status_node_num, 3);
606 int want_len = strlen(name_hashtable[want]);
607 int flag_len = strlen(name_hashtable[flag]);
608 int status_len = strlen(name_hashtable[status]);
609 char *new_status;
Glenn L McGrathc9005752001-02-10 02:05:24 +0000610
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000611 switch (position) {
612 case (1):
613 want = new_value_num;
614 want_len = new_value_len;
615 break;
616 case (2):
617 flag = new_value_num;
618 flag_len = new_value_len;
619 break;
620 case (3):
621 status = new_value_num;
622 status_len = new_value_len;
623 break;
624 default:
625 error_msg_and_die("DEBUG ONLY: this shouldnt happen");
Glenn L McGrath0c9d77c2001-02-11 00:17:22 +0000626 }
Glenn L McGrath63106462001-02-11 01:40:23 +0000627
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000628 new_status = (char *) xmalloc(want_len + flag_len + status_len + 3);
629 sprintf(new_status, "%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]);
630 status_hashtable[status_node_num]->status = search_name_hashtable(new_status);
Glenn L McGrath81108e72001-07-19 12:15:13 +0000631 free(new_status);
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000632 return;
633}
Glenn L McGrath305fdfa2001-04-08 13:27:39 +0000634
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000635void index_status_file(const char *filename)
636{
637 FILE *status_file;
638 char *control_buffer;
639 char *status_line;
640 status_node_t *status_node = NULL;
641 unsigned int status_num;
642
Glenn L McGrath4cdc6072001-07-18 03:13:49 +0000643 status_file = xfopen(filename, "r");
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000644 while ((control_buffer = fgets_str(status_file, "\n\n")) != NULL) {
645 const unsigned int package_num = fill_package_struct(control_buffer);
646 if (package_num != -1) {
647 status_node = xmalloc(sizeof(status_node_t));
648 /* fill_package_struct doesnt handle the status field */
649 status_line = strstr(control_buffer, "Status:");
650 if (status_line != NULL) {
651 status_line += 7;
652 status_line += strspn(status_line, " \n\t");
653 status_line = xstrndup(status_line, strcspn(status_line, "\n\0"));
654 status_node->status = search_name_hashtable(status_line);
655 free(status_line);
656 }
657 status_node->package = package_num;
658 status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]);
659 status_hashtable[status_num] = status_node;
660 }
661 free(control_buffer);
662 }
663 fclose(status_file);
664 return;
665}
666
667
668char *get_depends_field(common_node_t *package, const int depends_type)
669{
670 char *depends = NULL;
671 char *old_sep = (char *)xcalloc(1, 3);
672 char *new_sep = (char *)xcalloc(1, 3);
673 int line_size = 0;
674 int depends_size;
675
676 int i;
677
678 for (i = 0; i < package->num_of_edges; i++) {
679 if ((package->edge[i]->type == EDGE_OR_PRE_DEPENDS) ||
680 (package->edge[i]->type == EDGE_OR_DEPENDS)) {
681 }
682
683 if ((package->edge[i]->type == depends_type) ||
684 (package->edge[i]->type == depends_type + 1)) {
685 /* Check if its the first time through */
686
687 depends_size = 8 + strlen(name_hashtable[package->edge[i]->name])
688 + strlen(name_hashtable[package->edge[i]->version]);
689 line_size += depends_size;
690 depends = (char *) xrealloc(depends, line_size + 1);
691
692 /* Check to see if this dependency is the type we are looking for
693 * +1 to check for 'extra' types, e.g. ored dependecies */
694 strcpy(old_sep, new_sep);
695 if (package->edge[i]->type == depends_type) {
696 strcpy(new_sep, ", ");
697 }
698 else if (package->edge[i]->type == depends_type + 1) {
699 strcpy(new_sep, "| ");
700 }
701
702 if (depends_size == line_size) {
703 strcpy(depends, "");
704 } else {
705 if ((strcmp(old_sep, "| ") == 0) && (strcmp(new_sep, "| ") == 0)) {
706 strcat(depends, " | ");
Glenn L McGrath305fdfa2001-04-08 13:27:39 +0000707 } else {
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000708 strcat(depends, ", ");
Glenn L McGrathc9005752001-02-10 02:05:24 +0000709 }
710 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000711
712 strcat(depends, name_hashtable[package->edge[i]->name]);
713 if (strcmp(name_hashtable[package->edge[i]->version], "NULL") != 0) {
714 if (package->edge[i]->operator == VER_EQUAL) {
715 strcat(depends, " (= ");
716 }
717 else if (package->edge[i]->operator == VER_LESS) {
718 strcat(depends, " (<< ");
719 }
720 else if (package->edge[i]->operator == VER_LESS_EQUAL) {
721 strcat(depends, " (<= ");
722 }
723 else if (package->edge[i]->operator == VER_MORE) {
724 strcat(depends, " (>> ");
725 }
726 else if (package->edge[i]->operator == VER_MORE_EQUAL) {
727 strcat(depends, " (>= ");
728 } else {
729 strcat(depends, " (");
730 }
731 strcat(depends, name_hashtable[package->edge[i]->version]);
732 strcat(depends, ")");
733 }
Glenn L McGrathc9005752001-02-10 02:05:24 +0000734 }
735 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000736 return(depends);
Glenn L McGrathc9005752001-02-10 02:05:24 +0000737}
738
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000739void write_buffer_no_status(FILE *new_status_file, const char *control_buffer)
740{
741 char *name;
742 char *value;
743 int start = 0;
744 while (1) {
745 start += read_package_field(&control_buffer[start], &name, &value);
746 if (name == NULL) {
747 break;
748 }
749 if (strcmp(name, "Status") != 0) {
750 fprintf(new_status_file, "%s: %s\n", name, value);
751 }
752 }
753 return;
754}
755
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000756/* This could do with a cleanup */
757void write_status_file(deb_file_t **deb_file)
Glenn L McGrathc9005752001-02-10 02:05:24 +0000758{
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000759 FILE *old_status_file = xfopen("/var/lib/dpkg/status", "r");
760 FILE *new_status_file = xfopen("/var/lib/dpkg/status.udeb", "w");
761 char *package_name;
762 char *status_from_file;
763 char *control_buffer = NULL;
764 char *tmp_string;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000765 int status_num;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000766 int field_start = 0;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000767 int write_flag;
768 int i = 0;
Glenn L McGrathc9005752001-02-10 02:05:24 +0000769
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000770 /* Update previously known packages */
771 while ((control_buffer = fgets_str(old_status_file, "\n\n")) != NULL) {
772 tmp_string = strstr(control_buffer, "Package:") + 8;
773 tmp_string += strspn(tmp_string, " \n\t");
774 package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n\0"));
775 write_flag = FALSE;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000776 tmp_string = strstr(control_buffer, "Status:");
777 if (tmp_string != NULL) {
778 /* Seperate the status value from the control buffer */
779 tmp_string += 7;
780 tmp_string += strspn(tmp_string, " \n\t");
781 status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
782 } else {
783 status_from_file = NULL;
784 }
Glenn L McGrath63106462001-02-11 01:40:23 +0000785
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000786 /* Find this package in the status hashtable */
787 status_num = search_status_hashtable(package_name);
788 if (status_hashtable[status_num] != NULL) {
789 const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status];
790 if (strcmp(status_from_file, status_from_hashtable) != 0) {
791 /* New status isnt exactly the same as old status */
792 const int state_status = get_status(status_num, 3);
793 if ((strcmp("installed", name_hashtable[state_status]) == 0) ||
794 (strcmp("unpacked", name_hashtable[state_status]) == 0)) {
795 /* We need to add the control file from the package */
796 i = 0;
797 while(deb_file[i] != NULL) {
798 if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) {
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000799 /* Write a status file entry with a modified status */
800 /* remove trailing \n's */
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000801 write_buffer_no_status(new_status_file, deb_file[i]->control_file);
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000802 set_status(status_num, "ok", 2);
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000803 fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000804 write_flag = TRUE;
805 break;
806 }
807 i++;
808 }
809 /* This is temperary, debugging only */
810 if (deb_file[i] == NULL) {
811 error_msg_and_die("ALERT: Couldnt find a control file, your status file may be broken, status may be incorrect for %s", package_name);
812 }
813 }
814 else if (strcmp("not-installed", name_hashtable[state_status]) == 0) {
815 /* Only write the Package, Status, Priority and Section lines */
816 fprintf(new_status_file, "Package: %s\n", package_name);
817 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000818
819 while (1) {
820 char *field_name;
821 char *field_value;
822 field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
823 if (field_name == NULL) {
824 break;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000825 }
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000826 if ((strcmp(field_name, "Priority") == 0) ||
827 (strcmp(field_name, "Section") == 0)) {
828 fprintf(new_status_file, "%s: %s\n", field_name, field_value);
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000829 }
830 }
831 write_flag = TRUE;
832 fputs("\n", new_status_file);
833 }
834 else if (strcmp("config-files", name_hashtable[state_status]) == 0) {
835 /* only change the status line */
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000836 while (1) {
837 char *field_name;
838 char *field_value;
839 field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
840 if (field_name == NULL) {
841 break;
842 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000843 /* Setup start point for next field */
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000844 if (strcmp(field_name, "Status") == 0) {
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000845 fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
846 } else {
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000847 fprintf(new_status_file, "%s: %s\n", field_name, field_value);
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000848 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000849 }
850 write_flag = TRUE;
851 fputs("\n", new_status_file);
Glenn L McGrath0e757a22001-04-08 05:27:18 +0000852 }
Glenn L McGrath0c9d77c2001-02-11 00:17:22 +0000853 }
Glenn L McGrathc9005752001-02-10 02:05:24 +0000854 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000855 /* If the package from the status file wasnt handle above, do it now*/
856 if (write_flag == FALSE) {
857 fprintf(new_status_file, "%s\n\n", control_buffer);
858 }
Glenn L McGrathc9005752001-02-10 02:05:24 +0000859
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000860 if (status_from_file != NULL) {
861 free(status_from_file);
862 }
863 free(package_name);
864 free(control_buffer);
865 }
Glenn L McGrath7b024152001-07-18 04:33:31 +0000866
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000867 /* Write any new packages */
868 for(i = 0; deb_file[i] != NULL; i++) {
869 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]);
870 if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) {
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000871 write_buffer_no_status(new_status_file, deb_file[i]->control_file);
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000872 set_status(status_num, "ok", 2);
Glenn L McGrathc3fbec72001-07-18 15:47:21 +0000873 fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000874 }
875 }
876 fclose(old_status_file);
877 fclose(new_status_file);
878
879
880 /* Create a seperate backfile to dpkg */
881 if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) {
Glenn L McGrath13e9c7a2001-04-08 07:18:08 +0000882 struct stat stat_buf;
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000883 if (stat("/var/lib/dpkg/status", &stat_buf) == 0) {
884 error_msg_and_die("Couldnt create backup status file");
Glenn L McGrath13e9c7a2001-04-08 07:18:08 +0000885 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000886 /* Its ok if renaming the status file fails becasue status
887 * file doesnt exist, maybe we are starting from scratch */
Glenn L McGrath305fdfa2001-04-08 13:27:39 +0000888 error_msg("No status file found, creating new one");
Glenn L McGrath0c9d77c2001-02-11 00:17:22 +0000889 }
Glenn L McGrath63106462001-02-11 01:40:23 +0000890
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000891 if (rename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status") == -1) {
892 error_msg_and_die("DANGER: Couldnt create status file, you need to manually repair your status file");
Glenn L McGrath13e9c7a2001-04-08 07:18:08 +0000893 }
Glenn L McGrathc9005752001-02-10 02:05:24 +0000894}
895
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000896int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
Glenn L McGrathc9005752001-02-10 02:05:24 +0000897{
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000898 int *conflicts = NULL;
899 int conflicts_num = 0;
900 int state_status;
901 int state_flag;
902 int state_want;
903 unsigned int status_package_num;
904 int i = deb_start;
905 int j, k;
Glenn L McGrathc9005752001-02-10 02:05:24 +0000906
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000907 /* Check for conflicts
908 * TODO: TEST if conflicts with other packages to be installed
909 *
910 * Add install packages and the packages they provide
911 * to the list of files to check conflicts for
912 */
913
914 /* Create array of package numbers to check against
915 * installed package for conflicts*/
916 while (deb_file[i] != NULL) {
917 const unsigned int package_num = deb_file[i]->package;
918 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
919 conflicts[conflicts_num] = package_num;
920 conflicts_num++;
921 /* add provides to conflicts list */
922 for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) {
923 if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) {
924 const int conflicts_package_num = search_package_hashtable(
925 package_hashtable[package_num]->edge[j]->name,
926 package_hashtable[package_num]->edge[j]->version,
927 package_hashtable[package_num]->edge[j]->operator);
928 if (package_hashtable[conflicts_package_num] == NULL) {
929 /* create a new package */
930 common_node_t *new_node = (common_node_t *) xmalloc(sizeof(common_node_t));
931 new_node->name = package_hashtable[package_num]->edge[j]->name;
932 new_node->version = package_hashtable[package_num]->edge[j]->version;
933 new_node->num_of_edges = 0;
934 new_node->edge = NULL;
935 package_hashtable[conflicts_package_num] = new_node;
936 }
937 conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
938 conflicts[conflicts_num] = conflicts_package_num;
939 conflicts_num++;
940 }
941 }
942 i++;
Glenn L McGrath0c9d77c2001-02-11 00:17:22 +0000943 }
Glenn L McGrathc9005752001-02-10 02:05:24 +0000944
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000945 /* Check conflicts */
946 for (i = 0; i < conflicts_num; i++) {
947 /* Check for conflicts */
948 for (j = 0; j < STATUS_HASH_PRIME; j++) {
949 if (status_hashtable[j] == NULL) {
950 continue;
951 }
952 state_flag = get_status(j, 2);
953 state_status = get_status(j, 3);
954 if ((state_status != search_name_hashtable("installed"))
955 && (state_flag != search_name_hashtable("want-install"))) {
956 continue;
957 }
958 status_package_num = status_hashtable[j]->package;
959 for (k = 0; k < package_hashtable[status_package_num]->num_of_edges; k++) {
960 const edge_t *package_edge = package_hashtable[status_package_num]->edge[k];
961 if (package_edge->type != EDGE_CONFLICTS) {
962 continue;
963 }
964 if (package_edge->name != package_hashtable[conflicts[i]]->name) {
965 continue;
966 }
967 /* There is a conflict against the package name
968 * check if version conflict as well */
969 if (test_version(package_hashtable[deb_file[i]->package]->version,
970 package_edge->version, package_edge->operator)) {
971 error_msg_and_die("Package %s conflict with %s",
972 name_hashtable[package_hashtable[deb_file[i]->package]->name],
973 name_hashtable[package_hashtable[status_package_num]->name]);
974 }
975 }
Glenn L McGrathc9005752001-02-10 02:05:24 +0000976 }
977 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +0000978
979 /* Check dependendcies */
980 i = 0;
981 while (deb_file[i] != NULL) {
982 const common_node_t *package_node = package_hashtable[deb_file[i]->package];
983 int status_num = 0;
984
985 for (j = 0; j < package_hashtable[deb_file[i]->package]->num_of_edges; j++) {
986 const edge_t *package_edge = package_node->edge[j];
987 const unsigned int package_num = search_package_hashtable(package_edge->name,
988 package_edge->version, package_edge->operator);
989
990 status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
991 state_status = get_status(status_num, 3);
992 state_want = get_status(status_num, 1);
993 switch (package_edge->type) {
994 case(EDGE_PRE_DEPENDS):
995 case(EDGE_OR_PRE_DEPENDS):
996 /* It must be already installed */
997 /* NOTE: This is untested, nothing apropriate in my status file */
998 if ((package_hashtable[package_num] == NULL) || (state_status != search_name_hashtable("installed"))) {
999 error_msg_and_die("Package %s pre-depends on %s, but it is not installed",
1000 name_hashtable[package_node->name],
1001 name_hashtable[package_edge->name]);
1002 }
1003 break;
1004 case(EDGE_DEPENDS):
1005 case(EDGE_OR_DEPENDS):
1006 /* It must be already installed, or to be installed */
1007 if ((package_hashtable[package_num] == NULL) ||
1008 ((state_status != search_name_hashtable("installed")) &&
1009 (state_want != search_name_hashtable("want_install")))) {
1010 error_msg_and_die("Package %s depends on %s, but it is not installed, or flaged to be installed",
1011 name_hashtable[package_node->name],
1012 name_hashtable[package_edge->name]);
1013 }
1014 break;
1015 }
1016 }
1017 i++;
1018 }
Glenn L McGrath81108e72001-07-19 12:15:13 +00001019 free(conflicts);
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001020 return(TRUE);
Glenn L McGrathc9005752001-02-10 02:05:24 +00001021}
1022
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001023char **create_list(const char *filename)
Glenn L McGrathc9005752001-02-10 02:05:24 +00001024{
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001025 FILE *list_stream;
1026 char **file_list = xmalloc(sizeof(char *));
1027 char *line = NULL;
1028 char *last_char;
1029 int length = 0;
1030 int count = 0;
1031
Glenn L McGrathc3fbec72001-07-18 15:47:21 +00001032 /* dont use [xw]fopen here, handle error ourself */
1033 list_stream = fopen(filename, "r");
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001034 if (list_stream == NULL) {
Glenn L McGrathc3fbec72001-07-18 15:47:21 +00001035 *file_list = NULL;
1036 return(file_list);
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001037 }
1038 while (getline(&line, &length, list_stream) != -1) {
1039 file_list = xrealloc(file_list, sizeof(char *) * (length + 1));
1040 last_char = last_char_is(line, '\n');
1041 if (last_char) {
1042 *last_char = '\0';
1043 }
1044 file_list[count] = xstrdup(line);
1045 free(line);
1046 count++;
1047 length = 0;
1048 }
1049 fclose(list_stream);
Glenn L McGrathc3fbec72001-07-18 15:47:21 +00001050
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001051 if (count == 0) {
1052 return(NULL);
1053 } else {
1054 file_list[count] = NULL;
1055 return(file_list);
1056 }
1057}
1058
1059/* maybe i should try and hook this into remove_file.c somehow */
1060int remove_file_array(char **remove_names, char **exclude_names)
1061{
1062 struct stat path_stat;
1063 int match_flag;
1064 int remove_flag = FALSE;
1065 int i,j;
1066
1067 if (remove_names == NULL) {
1068 return(FALSE);
1069 }
1070 for (i = 0; remove_names[i] != NULL; i++) {
1071 match_flag = FALSE;
1072 if (exclude_names != NULL) {
1073 for (j = 0; exclude_names[j] != 0; j++) {
1074 if (strcmp(remove_names[i], exclude_names[j]) == 0) {
1075 match_flag = TRUE;
1076 break;
1077 }
1078 }
1079 }
1080 if (!match_flag) {
1081 if (lstat(remove_names[i], &path_stat) < 0) {
1082 continue;
1083 }
1084 if (S_ISDIR(path_stat.st_mode)) {
1085 if (rmdir(remove_names[i]) != -1) {
1086 remove_flag = TRUE;
1087 }
1088 } else {
1089 if (unlink(remove_names[i]) != -1) {
1090 remove_flag = TRUE;
1091 }
1092 }
1093 }
1094 }
1095 return(remove_flag);
1096}
1097
1098int run_package_script(const char *package_name, const char *script_type)
1099{
1100 struct stat path_stat;
1101 char *script_path;
1102
1103 script_path = xmalloc(strlen(package_name) + strlen(script_type) + 21);
1104 sprintf(script_path, "/var/lib/dpkg/info/%s.%s", package_name, script_type);
1105
1106 /* If the file doesnt exist is isnt a fatal */
1107 if (lstat(script_path, &path_stat) < 0) {
Glenn L McGrath81108e72001-07-19 12:15:13 +00001108 free(script_path);
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001109 return(EXIT_SUCCESS);
1110 } else {
Glenn L McGrath81108e72001-07-19 12:15:13 +00001111 free(script_path);
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001112 return(system(script_path));
1113 }
1114}
1115
1116void all_control_list(char **remove_files, const char *package_name)
1117{
1118 const char *all_extensions[11] = {"preinst", "postinst", "prerm", "postrm",
1119 "list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL };
1120 int i;
1121
1122 /* Create a list of all /var/lib/dpkg/info/<package> files */
1123 for(i = 0; i < 10; i++) {
1124 remove_files[i] = xmalloc(strlen(package_name) + strlen(all_extensions[i]) + 21);
1125 sprintf(remove_files[i], "/var/lib/dpkg/info/%s.%s", package_name, all_extensions[i]);
1126 }
1127 remove_files[10] = NULL;
1128}
1129
1130void remove_package(const unsigned int package_num)
1131{
1132 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
1133 const unsigned int status_num = search_status_hashtable(package_name);
1134 const int package_name_length = strlen(package_name);
1135 char **remove_files;
1136 char **exclude_files;
1137 char list_name[package_name_length + 25];
1138 char conffile_name[package_name_length + 30];
1139 int return_value;
1140
Glenn L McGrathed4492a2001-07-18 05:03:49 +00001141 printf("Removing %s ...\n", package_name);
1142
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001143 /* run prerm script */
1144 return_value = run_package_script(package_name, "prem");
1145 if (return_value == -1) {
1146 error_msg_and_die("script failed, prerm failure");
1147 }
1148
1149 /* Create a list of files to remove, and a seperate list of those to keep */
1150 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
1151 remove_files = create_list(list_name);
1152
1153 sprintf(conffile_name, "/var/lib/dpkg/info/%s.conffiles", package_name);
1154 exclude_files = create_list(conffile_name);
1155
1156 /* Some directories cant be removed straight away, so do multiple passes */
1157 while (remove_file_array(remove_files, exclude_files) == TRUE);
1158
1159 /* Create a list of all /var/lib/dpkg/info/<package> files */
1160 remove_files = xmalloc(11);
1161 all_control_list(remove_files, package_name);
1162
1163 /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */
1164 exclude_files = xmalloc(sizeof(char*) * 3);
1165 exclude_files[0] = xstrdup(conffile_name);
1166 exclude_files[1] = xmalloc(package_name_length + 27);
1167 sprintf(exclude_files[1], "/var/lib/dpkg/info/%s.postrm", package_name);
1168 exclude_files[2] = NULL;
1169
1170 remove_file_array(remove_files, exclude_files);
1171
1172 /* rename <package>.conffile to <package>.list */
1173 rename(conffile_name, list_name);
1174
1175 /* Change package status */
1176 set_status(status_num, "deinstall", 1);
1177 set_status(status_num, "config-files", 3);
1178}
1179
1180void purge_package(const unsigned int package_num)
1181{
1182 const char *package_name = name_hashtable[package_hashtable[package_num]->name];
1183 const unsigned int status_num = search_status_hashtable(package_name);
1184 char **remove_files;
1185 char **exclude_files;
1186 char list_name[strlen(package_name) + 25];
1187
1188 /* run prerm script */
1189 if (run_package_script(package_name, "prerm") == -1) {
1190 error_msg_and_die("script failed, prerm failure");
1191 }
1192
1193 /* Create a list of files to remove */
1194 sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
1195 remove_files = create_list(list_name);
1196
1197 exclude_files = xmalloc(1);
1198 exclude_files[0] = NULL;
1199
1200 /* Some directories cant be removed straight away, so do multiple passes */
1201 while (remove_file_array(remove_files, exclude_files) == TRUE);
1202
1203 /* Create a list of all /var/lib/dpkg/info/<package> files */
1204 remove_files = xmalloc(11);
1205 all_control_list(remove_files, package_name);
1206 remove_file_array(remove_files, exclude_files);
1207
1208 /* run postrm script */
1209 if (run_package_script(package_name, "postrm") == -1) {
1210 error_msg_and_die("postrm fialure.. set status to what?");
1211 }
Glenn L McGrathc3fbec72001-07-18 15:47:21 +00001212
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001213 /* Change package status */
1214 set_status(status_num, "purge", 1);
1215 set_status(status_num, "not-installed", 3);
1216}
1217
1218void unpack_package(deb_file_t *deb_file)
1219{
Glenn L McGrath7b024152001-07-18 04:33:31 +00001220 const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001221 const unsigned int status_num = search_status_hashtable(package_name);
Glenn L McGrath7b024152001-07-18 04:33:31 +00001222 const unsigned int status_package_num = status_hashtable[status_num]->status;
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001223
Glenn L McGrath9aff9032001-06-13 07:26:39 +00001224 FILE *out_stream;
1225 char *info_prefix;
Glenn L McGrathc9005752001-02-10 02:05:24 +00001226
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001227 /* If existing version, remove it first */
1228 if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) {
1229 /* Package is already installed, remove old version first */
1230 printf("Preparing to replace %s %s (using %s) ...\n", package_name,
1231 name_hashtable[package_hashtable[status_package_num]->version],
1232 deb_file->filename);
1233 remove_package(status_package_num);
1234 } else {
1235 printf("Unpacking %s (from %s) ...\n", package_name, deb_file->filename);
1236 }
Glenn L McGrathc9005752001-02-10 02:05:24 +00001237
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001238 /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
1239 info_prefix = (char *) xmalloc(sizeof(package_name) + 20 + 4 + 1);
1240 sprintf(info_prefix, "/var/lib/dpkg/info/%s.", package_name);
1241 deb_extract(deb_file->filename, stdout, (extract_quiet | extract_control_tar_gz | extract_all_to_fs), info_prefix, NULL);
Glenn L McGrath3af1f882001-02-12 11:33:09 +00001242
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001243 /* Extract data.tar.gz to the root directory */
1244 deb_extract(deb_file->filename, stdout, (extract_quiet | extract_data_tar_gz | extract_all_to_fs), "/", NULL);
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001245
Glenn L McGrath33431eb2001-04-16 04:52:19 +00001246 /* Create the list file */
Glenn L McGrath9aff9032001-06-13 07:26:39 +00001247 strcat(info_prefix, "list");
Glenn L McGrath4cdc6072001-07-18 03:13:49 +00001248 out_stream = xfopen(info_prefix, "w");
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001249 deb_extract(deb_file->filename, out_stream, (extract_quiet | extract_data_tar_gz | extract_list), NULL, NULL);
Glenn L McGrath9aff9032001-06-13 07:26:39 +00001250 fclose(out_stream);
Glenn L McGrath3af1f882001-02-12 11:33:09 +00001251
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001252 /* change status */
1253 set_status(status_num, "install", 1);
1254 set_status(status_num, "unpacked", 3);
Glenn L McGrath81108e72001-07-19 12:15:13 +00001255
1256 free(info_prefix);
Glenn L McGrathc9005752001-02-10 02:05:24 +00001257}
1258
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001259void configure_package(deb_file_t *deb_file)
Glenn L McGrathc9005752001-02-10 02:05:24 +00001260{
Glenn L McGrath7b024152001-07-18 04:33:31 +00001261 const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
1262 const char *package_version = name_hashtable[package_hashtable[deb_file->package]->version];
1263 const int status_num = search_status_hashtable(package_name);
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001264 int return_value;
Glenn L McGrath7b024152001-07-18 04:33:31 +00001265
1266 printf("Setting up %s (%s)\n", package_name, package_version);
Glenn L McGrathc9005752001-02-10 02:05:24 +00001267
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001268 /* Run the preinst prior to extracting */
Glenn L McGrath7b024152001-07-18 04:33:31 +00001269 return_value = run_package_script(package_name, "postinst");
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001270 if (return_value == -1) {
1271 /* TODO: handle failure gracefully */
Glenn L McGrath7b024152001-07-18 04:33:31 +00001272 error_msg_and_die("postrm failure.. set status to what?");
Glenn L McGrath63106462001-02-11 01:40:23 +00001273 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001274 /* Change status to reflect success */
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001275 set_status(status_num, "install", 1);
1276 set_status(status_num, "installed", 3);
Glenn L McGrathc9005752001-02-10 02:05:24 +00001277}
1278
Glenn L McGrath649968c2001-02-10 14:26:48 +00001279extern int dpkg_main(int argc, char **argv)
Glenn L McGrathc9005752001-02-10 02:05:24 +00001280{
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001281 deb_file_t **deb_file = NULL;
1282 status_node_t *status_node;
1283 char opt = 0;
1284 int package_num;
1285 int dpkg_opt = 0;
1286 int deb_count = 0;
1287 int state_status;
1288 int status_num;
1289 int i;
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001290
Glenn L McGrath778041f2001-07-18 05:17:39 +00001291 while ((opt = getopt(argc, argv, "CF:ilPru")) != -1) {
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001292 switch (opt) {
Glenn L McGrath778041f2001-07-18 05:17:39 +00001293 case 'C': // equivalent to --configure in official dpkg
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001294 dpkg_opt |= dpkg_opt_configure;
1295 dpkg_opt |= dpkg_opt_package_name;
1296 break;
1297 case 'F': // equivalent to --force in official dpkg
1298 if (strcmp(optarg, "depends") == 0) {
1299 dpkg_opt |= dpkg_opt_force_ignore_depends;
1300 }
1301 case 'i':
1302 dpkg_opt |= dpkg_opt_install;
1303 dpkg_opt |= dpkg_opt_filename;
1304 break;
1305 case 'l':
1306 dpkg_opt |= dpkg_opt_list_installed;
1307 case 'P':
1308 dpkg_opt |= dpkg_opt_purge;
1309 dpkg_opt |= dpkg_opt_package_name;
1310 break;
1311 case 'r':
1312 dpkg_opt |= dpkg_opt_remove;
1313 dpkg_opt |= dpkg_opt_package_name;
1314 break;
1315 case 'u': /* Equivalent to --unpack in official dpkg */
1316 dpkg_opt |= dpkg_opt_unpack;
1317 dpkg_opt |= dpkg_opt_filename;
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001318 break;
1319 default:
1320 show_usage();
1321 }
Glenn L McGrathc9005752001-02-10 02:05:24 +00001322 }
Glenn L McGrath63106462001-02-11 01:40:23 +00001323
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001324 if ((argc == optind) || (dpkg_opt == 0)) {
1325 show_usage();
1326 }
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001327
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001328 puts("(Reading database ... xxxxx files and directories installed.)");
1329 index_status_file("/var/lib/dpkg/status");
1330
1331 /* Read arguments and store relevant info in structs */
1332 deb_file = xmalloc(sizeof(deb_file_t));
1333 while (optind < argc) {
1334 deb_file[deb_count] = (deb_file_t *) xmalloc(sizeof(deb_file_t));
1335 if (dpkg_opt & dpkg_opt_filename) {
1336 deb_file[deb_count]->filename = xstrdup(argv[optind]);
1337 deb_file[deb_count]->control_file = deb_extract(argv[optind], stdout, (extract_control_tar_gz | extract_one_to_buffer), NULL, "./control");
1338 if (deb_file[deb_count]->control_file == NULL) {
1339 error_msg_and_die("Couldnt extract control file");
1340 }
1341 package_num = fill_package_struct(deb_file[deb_count]->control_file);
1342
1343 if (package_num == -1) {
1344 error_msg("Invalid control file in %s", argv[optind]);
1345 continue;
1346 }
1347 deb_file[deb_count]->package = (unsigned int) package_num;
1348 /* Add the package to the status hashtable */
1349 if ((dpkg_opt & dpkg_opt_unpack) || (dpkg_opt & dpkg_opt_install)) {
1350 status_node = (status_node_t *) xmalloc(sizeof(status_node_t));
1351 status_node->package = deb_file[deb_count]->package;
1352 /* use reinstreq isnt changed to "ok" until the package control info
1353 * is written to the status file*/
1354 status_node->status = search_name_hashtable("install reinstreq not-installed");
1355
1356 status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1357 status_hashtable[status_num] = status_node;
1358 }
1359 }
1360 else if (dpkg_opt & dpkg_opt_package_name) {
1361 deb_file[deb_count]->filename = NULL;
1362 deb_file[deb_count]->control_file = NULL;
1363 deb_file[deb_count]->package = search_package_hashtable(
1364 search_name_hashtable(argv[optind]),
1365 search_name_hashtable("ANY"), VER_ANY);
1366 if (package_hashtable[deb_file[deb_count]->package] == NULL) {
Glenn L McGrathed4492a2001-07-18 05:03:49 +00001367 error_msg_and_die("Package %s is uninstalled or unknown\n", argv[optind]);
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001368 }
1369 state_status = get_status(search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]), 3);
1370
1371 /* check package status is "installed" */
1372 if (dpkg_opt & dpkg_opt_remove) {
1373 if ((strcmp(name_hashtable[state_status], "not-installed") == 0) ||
1374 (strcmp(name_hashtable[state_status], "config-files") == 0)) {
1375 error_msg_and_die("%s is already removed.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1376 }
1377 }
1378 else if (dpkg_opt & dpkg_opt_purge) {
1379 /* if package status is "conf-files" then its ok */
1380 if (strcmp(name_hashtable[state_status], "not-installed") == 0) {
1381 error_msg_and_die("%s is already purged.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
1382 }
1383 }
1384 }
1385 deb_count++;
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001386 optind++;
1387 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001388 deb_file[deb_count] = NULL;
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001389
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001390 /* Check that the deb file arguments are installable */
1391 /* TODO: check dependencies before removing */
1392 if ((dpkg_opt & dpkg_opt_force_ignore_depends) != dpkg_opt_force_ignore_depends) {
1393 if (!check_deps(deb_file, 0, deb_count)) {
Glenn L McGrathc3fbec72001-07-18 15:47:21 +00001394 error_msg_and_die("Dependency check failed");
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001395 }
1396 }
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001397
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001398 for (i = 0; i < deb_count; i++) {
1399 /* Remove or purge packages */
1400 if (dpkg_opt & dpkg_opt_remove) {
1401 remove_package(deb_file[i]->package);
1402 }
1403 else if (dpkg_opt & dpkg_opt_purge) {
1404 purge_package(deb_file[i]->package);
1405 }
1406 else if (dpkg_opt & dpkg_opt_unpack) {
1407 unpack_package(deb_file[i]);
1408 }
1409 else if (dpkg_opt & dpkg_opt_install) {
1410 unpack_package(deb_file[i]);
1411 configure_package(deb_file[i]);
1412 }
1413 else if (dpkg_opt & dpkg_opt_configure) {
1414 configure_package(deb_file[i]);
1415 }
1416 }
Glenn L McGrathc3fbec72001-07-18 15:47:21 +00001417
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001418 write_status_file(deb_file);
1419
Glenn L McGrath81108e72001-07-19 12:15:13 +00001420 for (i = 0; i < deb_count; i++) {
1421 free(deb_file[i]->control_file);
1422 free(deb_file[i]->filename);
1423 free(deb_file[i]);
1424 }
1425 free(deb_file);
1426
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001427 for (i = 0; i < NAME_HASH_PRIME; i++) {
1428 if (name_hashtable[i] != NULL) {
1429 free(name_hashtable[i]);
1430 }
Glenn L McGrathc9005752001-02-10 02:05:24 +00001431 }
Glenn L McGrath7b024152001-07-18 04:33:31 +00001432
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001433 for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
1434 free_package(package_hashtable[i]);
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001435 }
Glenn L McGrath7b024152001-07-18 04:33:31 +00001436
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001437 for (i = 0; i < STATUS_HASH_PRIME; i++) {
1438 if (status_hashtable[i] != NULL) {
1439 free(status_hashtable[i]);
1440 }
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001441 }
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001442
Glenn L McGrath0e757a22001-04-08 05:27:18 +00001443 return(EXIT_FAILURE);
Eric Andersen67991cf2001-02-14 21:23:06 +00001444}
Glenn L McGrathccd65c92001-07-13 18:35:24 +00001445