Contents of /tags/mkinitrd-6_4_0/busybox/archival/dpkg.c
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Fri May 27 18:20:23 2011 UTC (13 years, 4 months ago) by niro
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Fri May 27 18:20:23 2011 UTC (13 years, 4 months ago) by niro
File MIME type: text/plain
File size: 59052 byte(s)
tagged 'mkinitrd-6_4_0'
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * mini dpkg implementation for busybox. |
4 | * this is not meant as a replacement for dpkg |
5 | * |
6 | * written by glenn mcgrath with the help of others |
7 | * copyright (c) 2001 by glenn mcgrath |
8 | * |
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> |
12 | * |
13 | * started life as a busybox implementation of udpkg |
14 | * |
15 | * licensed under gplv2 or later, see file license in this tarball for details. |
16 | */ |
17 | |
18 | /* |
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. |
25 | * |
26 | * bugs that need to be fixed |
27 | * - (unknown, please let me know when you find any) |
28 | * |
29 | */ |
30 | |
31 | #include "libbb.h" |
32 | #include <fnmatch.h> |
33 | #include "unarchive.h" |
34 | |
35 | /* note: if you vary hash_prime sizes be aware, |
36 | * 1) tweaking these will have a big effect on how much memory this program uses. |
37 | * 2) for computational efficiency these hash tables should be at least 20% |
38 | * larger than the maximum number of elements stored in it. |
39 | * 3) all _hash_prime's must be a prime number or chaos is assured, if your looking |
40 | * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt |
41 | * 4) if you go bigger than 15 bits you may get into trouble (untested) as its |
42 | * sometimes cast to an unsigned, if you go to 16 bit you will overlap |
43 | * int's and chaos is assured, 16381 is the max prime for 14 bit field |
44 | */ |
45 | |
46 | /* NAME_HASH_PRIME, Stores package names and versions, |
47 | * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME, |
48 | * as there a lot of duplicate version numbers */ |
49 | #define NAME_HASH_PRIME 16381 |
50 | |
51 | /* PACKAGE_HASH_PRIME, Maximum number of unique packages, |
52 | * It must not be smaller than STATUS_HASH_PRIME, |
53 | * Currently only packages from status_hashtable are stored in here, but in |
54 | * future this may be used to store packages not only from a status file, |
55 | * but an available_hashtable, and even multiple packages files. |
56 | * Package can be stored more than once if they have different versions. |
57 | * e.g. The same package may have different versions in the status file |
58 | * and available file */ |
59 | #define PACKAGE_HASH_PRIME 10007 |
60 | typedef struct edge_s { |
61 | unsigned operator:4; /* was:3 */ |
62 | unsigned type:4; |
63 | unsigned name:16; /* was:14 */ |
64 | unsigned version:16; /* was:14 */ |
65 | } edge_t; |
66 | |
67 | typedef struct common_node_s { |
68 | unsigned name:16; /* was:14 */ |
69 | unsigned version:16; /* was:14 */ |
70 | unsigned num_of_edges:16; /* was:14 */ |
71 | edge_t **edge; |
72 | } common_node_t; |
73 | |
74 | /* Currently it doesnt store packages that have state-status of not-installed |
75 | * So it only really has to be the size of the maximum number of packages |
76 | * likely to be installed at any one time, so there is a bit of leeway here */ |
77 | #define STATUS_HASH_PRIME 8191 |
78 | typedef struct status_node_s { |
79 | unsigned package:16; /* was:14 */ /* has to fit PACKAGE_HASH_PRIME */ |
80 | unsigned status:16; /* was:14 */ /* has to fit STATUS_HASH_PRIME */ |
81 | } status_node_t; |
82 | |
83 | |
84 | /* Globals */ |
85 | struct globals { |
86 | char *name_hashtable[NAME_HASH_PRIME + 1]; |
87 | common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1]; |
88 | status_node_t *status_hashtable[STATUS_HASH_PRIME + 1]; |
89 | }; |
90 | #define G (*ptr_to_globals) |
91 | #define name_hashtable (G.name_hashtable ) |
92 | #define package_hashtable (G.package_hashtable) |
93 | #define status_hashtable (G.status_hashtable ) |
94 | #define INIT_G() do { \ |
95 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \ |
96 | } while (0) |
97 | |
98 | |
99 | /* Even numbers are for 'extras', like ored dependencies or null */ |
100 | enum edge_type_e { |
101 | EDGE_NULL = 0, |
102 | EDGE_PRE_DEPENDS = 1, |
103 | EDGE_OR_PRE_DEPENDS = 2, |
104 | EDGE_DEPENDS = 3, |
105 | EDGE_OR_DEPENDS = 4, |
106 | EDGE_REPLACES = 5, |
107 | EDGE_PROVIDES = 7, |
108 | EDGE_CONFLICTS = 9, |
109 | EDGE_SUGGESTS = 11, |
110 | EDGE_RECOMMENDS = 13, |
111 | EDGE_ENHANCES = 15 |
112 | }; |
113 | enum operator_e { |
114 | VER_NULL = 0, |
115 | VER_EQUAL = 1, |
116 | VER_LESS = 2, |
117 | VER_LESS_EQUAL = 3, |
118 | VER_MORE = 4, |
119 | VER_MORE_EQUAL = 5, |
120 | VER_ANY = 6 |
121 | }; |
122 | |
123 | typedef struct deb_file_s { |
124 | char *control_file; |
125 | char *filename; |
126 | unsigned package:16; /* was:14 */ |
127 | } deb_file_t; |
128 | |
129 | |
130 | static void make_hash(const char *key, unsigned *start, unsigned *decrement, const int hash_prime) |
131 | { |
132 | unsigned long hash_num = key[0]; |
133 | int len = strlen(key); |
134 | int i; |
135 | |
136 | /* Maybe i should have uses a "proper" hashing algorithm here instead |
137 | * of making one up myself, seems to be working ok though. */ |
138 | for (i = 1; i < len; i++) { |
139 | /* shifts the ascii based value and adds it to previous value |
140 | * shift amount is mod 24 because long int is 32 bit and data |
141 | * to be shifted is 8, don't want to shift data to where it has |
142 | * no effect */ |
143 | hash_num += (key[i] + key[i-1]) << ((key[i] * i) % 24); |
144 | } |
145 | *start = (unsigned) hash_num % hash_prime; |
146 | *decrement = (unsigned) 1 + (hash_num % (hash_prime - 1)); |
147 | } |
148 | |
149 | /* this adds the key to the hash table */ |
150 | static int search_name_hashtable(const char *key) |
151 | { |
152 | unsigned probe_address; |
153 | unsigned probe_decrement; |
154 | |
155 | make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME); |
156 | while (name_hashtable[probe_address] != NULL) { |
157 | if (strcmp(name_hashtable[probe_address], key) == 0) { |
158 | return probe_address; |
159 | } |
160 | probe_address -= probe_decrement; |
161 | if ((int)probe_address < 0) { |
162 | probe_address += NAME_HASH_PRIME; |
163 | } |
164 | } |
165 | name_hashtable[probe_address] = xstrdup(key); |
166 | return probe_address; |
167 | } |
168 | |
169 | /* this DOESNT add the key to the hashtable |
170 | * TODO make it consistent with search_name_hashtable |
171 | */ |
172 | static unsigned search_status_hashtable(const char *key) |
173 | { |
174 | unsigned probe_address; |
175 | unsigned probe_decrement; |
176 | |
177 | make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME); |
178 | while (status_hashtable[probe_address] != NULL) { |
179 | if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) { |
180 | break; |
181 | } |
182 | probe_address -= probe_decrement; |
183 | if ((int)probe_address < 0) { |
184 | probe_address += STATUS_HASH_PRIME; |
185 | } |
186 | } |
187 | return probe_address; |
188 | } |
189 | |
190 | static int order(char x) |
191 | { |
192 | return (x == '~' ? -1 |
193 | : x == '\0' ? 0 |
194 | : isdigit(x) ? 0 |
195 | : isalpha(x) ? x |
196 | : (unsigned char)x + 256 |
197 | ); |
198 | } |
199 | |
200 | /* This code is taken from dpkg and modified slightly to work with busybox */ |
201 | static int version_compare_part(const char *val, const char *ref) |
202 | { |
203 | if (!val) val = ""; |
204 | if (!ref) ref = ""; |
205 | |
206 | while (*val || *ref) { |
207 | int first_diff; |
208 | |
209 | while ((*val && !isdigit(*val)) || (*ref && !isdigit(*ref))) { |
210 | int vc = order(*val); |
211 | int rc = order(*ref); |
212 | if (vc != rc) |
213 | return vc - rc; |
214 | val++; |
215 | ref++; |
216 | } |
217 | |
218 | while (*val == '0') |
219 | val++; |
220 | while (*ref == '0') |
221 | ref++; |
222 | |
223 | first_diff = 0; |
224 | while (isdigit(*val) && isdigit(*ref)) { |
225 | if (first_diff == 0) |
226 | first_diff = *val - *ref; |
227 | val++; |
228 | ref++; |
229 | } |
230 | if (isdigit(*val)) |
231 | return 1; |
232 | if (isdigit(*ref)) |
233 | return -1; |
234 | if (first_diff) |
235 | return first_diff; |
236 | } |
237 | return 0; |
238 | } |
239 | |
240 | /* if ver1 < ver2 return -1, |
241 | * if ver1 = ver2 return 0, |
242 | * if ver1 > ver2 return 1, |
243 | */ |
244 | static int version_compare(const unsigned ver1, const unsigned ver2) |
245 | { |
246 | char *ch_ver1 = name_hashtable[ver1]; |
247 | char *ch_ver2 = name_hashtable[ver2]; |
248 | unsigned epoch1 = 0, epoch2 = 0; |
249 | char *colon; |
250 | char *deb_ver1, *deb_ver2; |
251 | char *upstream_ver1; |
252 | char *upstream_ver2; |
253 | int result; |
254 | |
255 | /* Compare epoch */ |
256 | colon = strchr(ch_ver1, ':'); |
257 | if (colon) { |
258 | epoch1 = atoi(ch_ver1); |
259 | ch_ver1 = colon + 1; |
260 | } |
261 | colon = strchr(ch_ver2, ':'); |
262 | if (colon) { |
263 | epoch2 = atoi(ch_ver2); |
264 | ch_ver2 = colon + 1; |
265 | } |
266 | if (epoch1 < epoch2) { |
267 | return -1; |
268 | } |
269 | if (epoch1 > epoch2) { |
270 | return 1; |
271 | } |
272 | |
273 | /* Compare upstream version */ |
274 | upstream_ver1 = xstrdup(ch_ver1); |
275 | upstream_ver2 = xstrdup(ch_ver2); |
276 | |
277 | /* Chop off debian version, and store for later use */ |
278 | deb_ver1 = strrchr(upstream_ver1, '-'); |
279 | deb_ver2 = strrchr(upstream_ver2, '-'); |
280 | if (deb_ver1) { |
281 | *deb_ver1++ = '\0'; |
282 | } |
283 | if (deb_ver2) { |
284 | *deb_ver2++ = '\0'; |
285 | } |
286 | result = version_compare_part(upstream_ver1, upstream_ver2); |
287 | if (result == 0) { |
288 | /* Compare debian versions */ |
289 | result = version_compare_part(deb_ver1, deb_ver2); |
290 | } |
291 | |
292 | free(upstream_ver1); |
293 | free(upstream_ver2); |
294 | return result; |
295 | } |
296 | |
297 | static int test_version(const unsigned version1, const unsigned version2, const unsigned operator) |
298 | { |
299 | const int version_result = version_compare(version1, version2); |
300 | switch (operator) { |
301 | case VER_ANY: |
302 | return TRUE; |
303 | case VER_EQUAL: |
304 | return (version_result == 0); |
305 | case VER_LESS: |
306 | return (version_result < 0); |
307 | case VER_LESS_EQUAL: |
308 | return (version_result <= 0); |
309 | case VER_MORE: |
310 | return (version_result > 0); |
311 | case VER_MORE_EQUAL: |
312 | return (version_result >= 0); |
313 | } |
314 | return FALSE; |
315 | } |
316 | |
317 | static int search_package_hashtable(const unsigned name, const unsigned version, const unsigned operator) |
318 | { |
319 | unsigned probe_address; |
320 | unsigned probe_decrement; |
321 | |
322 | make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME); |
323 | while (package_hashtable[probe_address] != NULL) { |
324 | if (package_hashtable[probe_address]->name == name) { |
325 | if (operator == VER_ANY) { |
326 | return probe_address; |
327 | } |
328 | if (test_version(package_hashtable[probe_address]->version, version, operator)) { |
329 | return probe_address; |
330 | } |
331 | } |
332 | probe_address -= probe_decrement; |
333 | if ((int)probe_address < 0) { |
334 | probe_address += PACKAGE_HASH_PRIME; |
335 | } |
336 | } |
337 | return probe_address; |
338 | } |
339 | |
340 | /* |
341 | * This function searches through the entire package_hashtable looking |
342 | * for a package which provides "needle". It returns the index into |
343 | * the package_hashtable for the providing package. |
344 | * |
345 | * needle is the index into name_hashtable of the package we are |
346 | * looking for. |
347 | * |
348 | * start_at is the index in the package_hashtable to start looking |
349 | * at. If start_at is -1 then start at the beginning. This is to allow |
350 | * for repeated searches since more than one package might provide |
351 | * needle. |
352 | * |
353 | * FIXME: I don't think this is very efficient, but I thought I'd keep |
354 | * it simple for now until it proves to be a problem. |
355 | */ |
356 | static int search_for_provides(int needle, int start_at) |
357 | { |
358 | int i, j; |
359 | common_node_t *p; |
360 | for (i = start_at + 1; i < PACKAGE_HASH_PRIME; i++) { |
361 | p = package_hashtable[i]; |
362 | if (p == NULL) |
363 | continue; |
364 | for (j = 0; j < p->num_of_edges; j++) |
365 | if (p->edge[j]->type == EDGE_PROVIDES && p->edge[j]->name == needle) |
366 | return i; |
367 | } |
368 | return -1; |
369 | } |
370 | |
371 | /* |
372 | * Add an edge to a node |
373 | */ |
374 | static void add_edge_to_node(common_node_t *node, edge_t *edge) |
375 | { |
376 | node->edge = xrealloc_vector(node->edge, 2, node->num_of_edges); |
377 | node->edge[node->num_of_edges++] = edge; |
378 | } |
379 | |
380 | /* |
381 | * Create one new node and one new edge for every dependency. |
382 | * |
383 | * Dependencies which contain multiple alternatives are represented as |
384 | * an EDGE_OR_PRE_DEPENDS or EDGE_OR_DEPENDS node, followed by a |
385 | * number of EDGE_PRE_DEPENDS or EDGE_DEPENDS nodes. The name field of |
386 | * the OR edge contains the full dependency string while the version |
387 | * field contains the number of EDGE nodes which follow as part of |
388 | * this alternative. |
389 | */ |
390 | static void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned edge_type) |
391 | { |
392 | char *line = xstrdup(whole_line); |
393 | char *line2; |
394 | char *line_ptr1 = NULL; |
395 | char *line_ptr2 = NULL; |
396 | char *field; |
397 | char *field2; |
398 | char *version; |
399 | edge_t *edge; |
400 | edge_t *or_edge; |
401 | int offset_ch; |
402 | |
403 | field = strtok_r(line, ",", &line_ptr1); |
404 | do { |
405 | /* skip leading spaces */ |
406 | field += strspn(field, " "); |
407 | line2 = xstrdup(field); |
408 | field2 = strtok_r(line2, "|", &line_ptr2); |
409 | or_edge = NULL; |
410 | if ((edge_type == EDGE_DEPENDS || edge_type == EDGE_PRE_DEPENDS) |
411 | && (strcmp(field, field2) != 0) |
412 | ) { |
413 | or_edge = xzalloc(sizeof(edge_t)); |
414 | or_edge->type = edge_type + 1; |
415 | or_edge->name = search_name_hashtable(field); |
416 | //or_edge->version = 0; // tracks the number of alternatives |
417 | add_edge_to_node(parent_node, or_edge); |
418 | } |
419 | |
420 | do { |
421 | edge = xmalloc(sizeof(edge_t)); |
422 | edge->type = edge_type; |
423 | |
424 | /* Skip any extra leading spaces */ |
425 | field2 += strspn(field2, " "); |
426 | |
427 | /* Get dependency version info */ |
428 | version = strchr(field2, '('); |
429 | if (version == NULL) { |
430 | edge->operator = VER_ANY; |
431 | /* Get the versions hash number, adding it if the number isnt already in there */ |
432 | edge->version = search_name_hashtable("ANY"); |
433 | } else { |
434 | /* Skip leading ' ' or '(' */ |
435 | version += strspn(version, " ("); |
436 | /* Calculate length of any operator characters */ |
437 | offset_ch = strspn(version, "<=>"); |
438 | /* Determine operator */ |
439 | if (offset_ch > 0) { |
440 | if (strncmp(version, "=", offset_ch) == 0) { |
441 | edge->operator = VER_EQUAL; |
442 | } else if (strncmp(version, "<<", offset_ch) == 0) { |
443 | edge->operator = VER_LESS; |
444 | } else if (strncmp(version, "<=", offset_ch) == 0) { |
445 | edge->operator = VER_LESS_EQUAL; |
446 | } else if (strncmp(version, ">>", offset_ch) == 0) { |
447 | edge->operator = VER_MORE; |
448 | } else if (strncmp(version, ">=", offset_ch) == 0) { |
449 | edge->operator = VER_MORE_EQUAL; |
450 | } else { |
451 | bb_error_msg_and_die("illegal operator"); |
452 | } |
453 | } |
454 | /* skip to start of version numbers */ |
455 | version += offset_ch; |
456 | version += strspn(version, " "); |
457 | |
458 | /* Truncate version at trailing ' ' or ')' */ |
459 | version[strcspn(version, " )")] = '\0'; |
460 | /* Get the versions hash number, adding it if the number isnt already in there */ |
461 | edge->version = search_name_hashtable(version); |
462 | } |
463 | |
464 | /* Get the dependency name */ |
465 | field2[strcspn(field2, " (")] = '\0'; |
466 | edge->name = search_name_hashtable(field2); |
467 | |
468 | if (or_edge) |
469 | or_edge->version++; |
470 | |
471 | add_edge_to_node(parent_node, edge); |
472 | field2 = strtok_r(NULL, "|", &line_ptr2); |
473 | } while (field2 != NULL); |
474 | |
475 | free(line2); |
476 | field = strtok_r(NULL, ",", &line_ptr1); |
477 | } while (field != NULL); |
478 | |
479 | free(line); |
480 | } |
481 | |
482 | static void free_package(common_node_t *node) |
483 | { |
484 | unsigned i; |
485 | if (node) { |
486 | for (i = 0; i < node->num_of_edges; i++) { |
487 | free(node->edge[i]); |
488 | } |
489 | free(node->edge); |
490 | free(node); |
491 | } |
492 | } |
493 | |
494 | /* |
495 | * Gets the next package field from package_buffer, separated into the field name |
496 | * and field value, it returns the int offset to the first character of the next field |
497 | */ |
498 | static int read_package_field(const char *package_buffer, char **field_name, char **field_value) |
499 | { |
500 | int offset_name_start = 0; |
501 | int offset_name_end = 0; |
502 | int offset_value_start = 0; |
503 | int offset_value_end = 0; |
504 | int offset = 0; |
505 | int next_offset; |
506 | int name_length; |
507 | int value_length; |
508 | int exit_flag = FALSE; |
509 | |
510 | if (package_buffer == NULL) { |
511 | *field_name = NULL; |
512 | *field_value = NULL; |
513 | return -1; |
514 | } |
515 | while (1) { |
516 | next_offset = offset + 1; |
517 | switch (package_buffer[offset]) { |
518 | case '\0': |
519 | exit_flag = TRUE; |
520 | break; |
521 | case ':': |
522 | if (offset_name_end == 0) { |
523 | offset_name_end = offset; |
524 | offset_value_start = next_offset; |
525 | } |
526 | /* TODO: Name might still have trailing spaces if ':' isnt |
527 | * immediately after name */ |
528 | break; |
529 | case '\n': |
530 | /* TODO: The char next_offset may be out of bounds */ |
531 | if (package_buffer[next_offset] != ' ') { |
532 | exit_flag = TRUE; |
533 | break; |
534 | } |
535 | case '\t': |
536 | case ' ': |
537 | /* increment the value start point if its a just filler */ |
538 | if (offset_name_start == offset) { |
539 | offset_name_start++; |
540 | } |
541 | if (offset_value_start == offset) { |
542 | offset_value_start++; |
543 | } |
544 | break; |
545 | } |
546 | if (exit_flag) { |
547 | /* Check that the names are valid */ |
548 | offset_value_end = offset; |
549 | name_length = offset_name_end - offset_name_start; |
550 | value_length = offset_value_end - offset_value_start; |
551 | if (name_length == 0) { |
552 | break; |
553 | } |
554 | if ((name_length > 0) && (value_length > 0)) { |
555 | break; |
556 | } |
557 | |
558 | /* If not valid, start fresh with next field */ |
559 | exit_flag = FALSE; |
560 | offset_name_start = offset + 1; |
561 | offset_name_end = 0; |
562 | offset_value_start = offset + 1; |
563 | offset_value_end = offset + 1; |
564 | offset++; |
565 | } |
566 | offset++; |
567 | } |
568 | *field_name = NULL; |
569 | if (name_length) { |
570 | *field_name = xstrndup(&package_buffer[offset_name_start], name_length); |
571 | } |
572 | *field_value = NULL; |
573 | if (value_length > 0) { |
574 | *field_value = xstrndup(&package_buffer[offset_value_start], value_length); |
575 | } |
576 | return next_offset; |
577 | } |
578 | |
579 | static unsigned fill_package_struct(char *control_buffer) |
580 | { |
581 | static const char field_names[] ALIGN1 = |
582 | "Package\0""Version\0" |
583 | "Pre-Depends\0""Depends\0""Replaces\0""Provides\0" |
584 | "Conflicts\0""Suggests\0""Recommends\0""Enhances\0"; |
585 | |
586 | common_node_t *new_node = xzalloc(sizeof(common_node_t)); |
587 | char *field_name; |
588 | char *field_value; |
589 | int field_start = 0; |
590 | int num = -1; |
591 | int buffer_length = strlen(control_buffer); |
592 | |
593 | new_node->version = search_name_hashtable("unknown"); |
594 | while (field_start < buffer_length) { |
595 | unsigned field_num; |
596 | |
597 | field_start += read_package_field(&control_buffer[field_start], |
598 | &field_name, &field_value); |
599 | |
600 | if (field_name == NULL) { |
601 | goto fill_package_struct_cleanup; |
602 | } |
603 | |
604 | field_num = index_in_strings(field_names, field_name); |
605 | switch (field_num) { |
606 | case 0: /* Package */ |
607 | new_node->name = search_name_hashtable(field_value); |
608 | break; |
609 | case 1: /* Version */ |
610 | new_node->version = search_name_hashtable(field_value); |
611 | break; |
612 | case 2: /* Pre-Depends */ |
613 | add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS); |
614 | break; |
615 | case 3: /* Depends */ |
616 | add_split_dependencies(new_node, field_value, EDGE_DEPENDS); |
617 | break; |
618 | case 4: /* Replaces */ |
619 | add_split_dependencies(new_node, field_value, EDGE_REPLACES); |
620 | break; |
621 | case 5: /* Provides */ |
622 | add_split_dependencies(new_node, field_value, EDGE_PROVIDES); |
623 | break; |
624 | case 6: /* Conflicts */ |
625 | add_split_dependencies(new_node, field_value, EDGE_CONFLICTS); |
626 | break; |
627 | case 7: /* Suggests */ |
628 | add_split_dependencies(new_node, field_value, EDGE_SUGGESTS); |
629 | break; |
630 | case 8: /* Recommends */ |
631 | add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS); |
632 | break; |
633 | case 9: /* Enhances */ |
634 | add_split_dependencies(new_node, field_value, EDGE_ENHANCES); |
635 | break; |
636 | } |
637 | fill_package_struct_cleanup: |
638 | free(field_name); |
639 | free(field_value); |
640 | } |
641 | |
642 | if (new_node->version == search_name_hashtable("unknown")) { |
643 | free_package(new_node); |
644 | return -1; |
645 | } |
646 | num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL); |
647 | free_package(package_hashtable[num]); |
648 | package_hashtable[num] = new_node; |
649 | return num; |
650 | } |
651 | |
652 | /* if num = 1, it returns the want status, 2 returns flag, 3 returns status */ |
653 | static unsigned get_status(const unsigned status_node, const int num) |
654 | { |
655 | char *status_string = name_hashtable[status_hashtable[status_node]->status]; |
656 | char *state_sub_string; |
657 | unsigned state_sub_num; |
658 | int len; |
659 | int i; |
660 | |
661 | /* set tmp_string to point to the start of the word number */ |
662 | for (i = 1; i < num; i++) { |
663 | /* skip past a word */ |
664 | status_string += strcspn(status_string, " "); |
665 | /* skip past the separating spaces */ |
666 | status_string += strspn(status_string, " "); |
667 | } |
668 | len = strcspn(status_string, " \n"); |
669 | state_sub_string = xstrndup(status_string, len); |
670 | state_sub_num = search_name_hashtable(state_sub_string); |
671 | free(state_sub_string); |
672 | return state_sub_num; |
673 | } |
674 | |
675 | static void set_status(const unsigned status_node_num, const char *new_value, const int position) |
676 | { |
677 | const unsigned new_value_len = strlen(new_value); |
678 | const unsigned new_value_num = search_name_hashtable(new_value); |
679 | unsigned want = get_status(status_node_num, 1); |
680 | unsigned flag = get_status(status_node_num, 2); |
681 | unsigned status = get_status(status_node_num, 3); |
682 | int want_len = strlen(name_hashtable[want]); |
683 | int flag_len = strlen(name_hashtable[flag]); |
684 | int status_len = strlen(name_hashtable[status]); |
685 | char *new_status; |
686 | |
687 | switch (position) { |
688 | case 1: |
689 | want = new_value_num; |
690 | want_len = new_value_len; |
691 | break; |
692 | case 2: |
693 | flag = new_value_num; |
694 | flag_len = new_value_len; |
695 | break; |
696 | case 3: |
697 | status = new_value_num; |
698 | status_len = new_value_len; |
699 | break; |
700 | default: |
701 | bb_error_msg_and_die("DEBUG ONLY: this shouldnt happen"); |
702 | } |
703 | |
704 | new_status = xasprintf("%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]); |
705 | status_hashtable[status_node_num]->status = search_name_hashtable(new_status); |
706 | free(new_status); |
707 | } |
708 | |
709 | static const char *describe_status(int status_num) |
710 | { |
711 | int status_want, status_state; |
712 | if (status_hashtable[status_num] == NULL || status_hashtable[status_num]->status == 0) |
713 | return "is not installed or flagged to be installed"; |
714 | |
715 | status_want = get_status(status_num, 1); |
716 | status_state = get_status(status_num, 3); |
717 | |
718 | if (status_state == search_name_hashtable("installed")) { |
719 | if (status_want == search_name_hashtable("install")) |
720 | return "is installed"; |
721 | if (status_want == search_name_hashtable("deinstall")) |
722 | return "is marked to be removed"; |
723 | if (status_want == search_name_hashtable("purge")) |
724 | return "is marked to be purged"; |
725 | } |
726 | if (status_want == search_name_hashtable("unknown")) |
727 | return "is in an indeterminate state"; |
728 | if (status_want == search_name_hashtable("install")) |
729 | return "is marked to be installed"; |
730 | |
731 | return "is not installed or flagged to be installed"; |
732 | } |
733 | |
734 | static void index_status_file(const char *filename) |
735 | { |
736 | FILE *status_file; |
737 | char *control_buffer; |
738 | char *status_line; |
739 | status_node_t *status_node = NULL; |
740 | unsigned status_num; |
741 | |
742 | status_file = xfopen_for_read(filename); |
743 | while ((control_buffer = xmalloc_fgetline_str(status_file, "\n\n")) != NULL) { |
744 | const unsigned package_num = fill_package_struct(control_buffer); |
745 | if (package_num != -1) { |
746 | status_node = xmalloc(sizeof(status_node_t)); |
747 | /* fill_package_struct doesnt handle the status field */ |
748 | status_line = strstr(control_buffer, "Status:"); |
749 | if (status_line != NULL) { |
750 | status_line += 7; |
751 | status_line += strspn(status_line, " \n\t"); |
752 | status_line = xstrndup(status_line, strcspn(status_line, "\n")); |
753 | status_node->status = search_name_hashtable(status_line); |
754 | free(status_line); |
755 | } |
756 | status_node->package = package_num; |
757 | status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]); |
758 | status_hashtable[status_num] = status_node; |
759 | } |
760 | free(control_buffer); |
761 | } |
762 | fclose(status_file); |
763 | } |
764 | |
765 | static void write_buffer_no_status(FILE *new_status_file, const char *control_buffer) |
766 | { |
767 | char *name; |
768 | char *value; |
769 | int start = 0; |
770 | while (1) { |
771 | start += read_package_field(&control_buffer[start], &name, &value); |
772 | if (name == NULL) { |
773 | break; |
774 | } |
775 | if (strcmp(name, "Status") != 0) { |
776 | fprintf(new_status_file, "%s: %s\n", name, value); |
777 | } |
778 | } |
779 | } |
780 | |
781 | /* This could do with a cleanup */ |
782 | static void write_status_file(deb_file_t **deb_file) |
783 | { |
784 | FILE *old_status_file = xfopen_for_read("/var/lib/dpkg/status"); |
785 | FILE *new_status_file = xfopen_for_write("/var/lib/dpkg/status.udeb"); |
786 | char *package_name; |
787 | char *status_from_file; |
788 | char *control_buffer = NULL; |
789 | char *tmp_string; |
790 | int status_num; |
791 | int field_start = 0; |
792 | int write_flag; |
793 | int i = 0; |
794 | |
795 | /* Update previously known packages */ |
796 | while ((control_buffer = xmalloc_fgetline_str(old_status_file, "\n\n")) != NULL) { |
797 | tmp_string = strstr(control_buffer, "Package:"); |
798 | if (tmp_string == NULL) { |
799 | continue; |
800 | } |
801 | |
802 | tmp_string += 8; |
803 | tmp_string += strspn(tmp_string, " \n\t"); |
804 | package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n")); |
805 | write_flag = FALSE; |
806 | tmp_string = strstr(control_buffer, "Status:"); |
807 | if (tmp_string != NULL) { |
808 | /* Separate the status value from the control buffer */ |
809 | tmp_string += 7; |
810 | tmp_string += strspn(tmp_string, " \n\t"); |
811 | status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n")); |
812 | } else { |
813 | status_from_file = NULL; |
814 | } |
815 | |
816 | /* Find this package in the status hashtable */ |
817 | status_num = search_status_hashtable(package_name); |
818 | if (status_hashtable[status_num] != NULL) { |
819 | const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status]; |
820 | if (strcmp(status_from_file, status_from_hashtable) != 0) { |
821 | /* New status isnt exactly the same as old status */ |
822 | const int state_status = get_status(status_num, 3); |
823 | if ((strcmp("installed", name_hashtable[state_status]) == 0) |
824 | || (strcmp("unpacked", name_hashtable[state_status]) == 0) |
825 | ) { |
826 | /* We need to add the control file from the package */ |
827 | i = 0; |
828 | while (deb_file[i] != NULL) { |
829 | if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) { |
830 | /* Write a status file entry with a modified status */ |
831 | /* remove trailing \n's */ |
832 | write_buffer_no_status(new_status_file, deb_file[i]->control_file); |
833 | set_status(status_num, "ok", 2); |
834 | fprintf(new_status_file, "Status: %s\n\n", |
835 | name_hashtable[status_hashtable[status_num]->status]); |
836 | write_flag = TRUE; |
837 | break; |
838 | } |
839 | i++; |
840 | } |
841 | /* This is temperary, debugging only */ |
842 | if (deb_file[i] == NULL) { |
843 | bb_error_msg_and_die("ALERT: cannot find a control file, " |
844 | "your status file may be broken, status may be " |
845 | "incorrect for %s", package_name); |
846 | } |
847 | } |
848 | else if (strcmp("not-installed", name_hashtable[state_status]) == 0) { |
849 | /* Only write the Package, Status, Priority and Section lines */ |
850 | fprintf(new_status_file, "Package: %s\n", package_name); |
851 | fprintf(new_status_file, "Status: %s\n", status_from_hashtable); |
852 | |
853 | while (1) { |
854 | char *field_name; |
855 | char *field_value; |
856 | field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value); |
857 | if (field_name == NULL) { |
858 | break; |
859 | } |
860 | if ((strcmp(field_name, "Priority") == 0) |
861 | || (strcmp(field_name, "Section") == 0) |
862 | ) { |
863 | fprintf(new_status_file, "%s: %s\n", field_name, field_value); |
864 | } |
865 | } |
866 | write_flag = TRUE; |
867 | fputs("\n", new_status_file); |
868 | } |
869 | else if (strcmp("config-files", name_hashtable[state_status]) == 0) { |
870 | /* only change the status line */ |
871 | while (1) { |
872 | char *field_name; |
873 | char *field_value; |
874 | field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value); |
875 | if (field_name == NULL) { |
876 | break; |
877 | } |
878 | /* Setup start point for next field */ |
879 | if (strcmp(field_name, "Status") == 0) { |
880 | fprintf(new_status_file, "Status: %s\n", status_from_hashtable); |
881 | } else { |
882 | fprintf(new_status_file, "%s: %s\n", field_name, field_value); |
883 | } |
884 | } |
885 | write_flag = TRUE; |
886 | fputs("\n", new_status_file); |
887 | } |
888 | } |
889 | } |
890 | /* If the package from the status file wasnt handle above, do it now*/ |
891 | if (!write_flag) { |
892 | fprintf(new_status_file, "%s\n\n", control_buffer); |
893 | } |
894 | |
895 | free(status_from_file); |
896 | free(package_name); |
897 | free(control_buffer); |
898 | } |
899 | |
900 | /* Write any new packages */ |
901 | for (i = 0; deb_file[i] != NULL; i++) { |
902 | status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]); |
903 | if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) { |
904 | write_buffer_no_status(new_status_file, deb_file[i]->control_file); |
905 | set_status(status_num, "ok", 2); |
906 | fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]); |
907 | } |
908 | } |
909 | fclose(old_status_file); |
910 | fclose(new_status_file); |
911 | |
912 | /* Create a separate backfile to dpkg */ |
913 | if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) { |
914 | if (errno != ENOENT) |
915 | bb_error_msg_and_die("can't create backup status file"); |
916 | /* Its ok if renaming the status file fails because status |
917 | * file doesnt exist, maybe we are starting from scratch */ |
918 | bb_error_msg("no status file found, creating new one"); |
919 | } |
920 | |
921 | xrename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status"); |
922 | } |
923 | |
924 | /* This function returns TRUE if the given package can satisfy a |
925 | * dependency of type depend_type. |
926 | * |
927 | * A pre-depends is satisfied only if a package is already installed, |
928 | * which a regular depends can be satisfied by a package which we want |
929 | * to install. |
930 | */ |
931 | static int package_satisfies_dependency(int package, int depend_type) |
932 | { |
933 | int status_num = search_status_hashtable(name_hashtable[package_hashtable[package]->name]); |
934 | |
935 | /* status could be unknown if package is a pure virtual |
936 | * provides which cannot satisfy any dependency by itself. |
937 | */ |
938 | if (status_hashtable[status_num] == NULL) |
939 | return 0; |
940 | |
941 | switch (depend_type) { |
942 | case EDGE_PRE_DEPENDS: return get_status(status_num, 3) == search_name_hashtable("installed"); |
943 | case EDGE_DEPENDS: return get_status(status_num, 1) == search_name_hashtable("install"); |
944 | } |
945 | return 0; |
946 | } |
947 | |
948 | static int check_deps(deb_file_t **deb_file, int deb_start /*, int dep_max_count - ?? */) |
949 | { |
950 | int *conflicts = NULL; |
951 | int conflicts_num = 0; |
952 | int i = deb_start; |
953 | int j; |
954 | |
955 | /* Check for conflicts |
956 | * TODO: TEST if conflicts with other packages to be installed |
957 | * |
958 | * Add install packages and the packages they provide |
959 | * to the list of files to check conflicts for |
960 | */ |
961 | |
962 | /* Create array of package numbers to check against |
963 | * installed package for conflicts*/ |
964 | while (deb_file[i] != NULL) { |
965 | const unsigned package_num = deb_file[i]->package; |
966 | conflicts = xrealloc_vector(conflicts, 2, conflicts_num); |
967 | conflicts[conflicts_num] = package_num; |
968 | conflicts_num++; |
969 | /* add provides to conflicts list */ |
970 | for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) { |
971 | if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) { |
972 | const int conflicts_package_num = search_package_hashtable( |
973 | package_hashtable[package_num]->edge[j]->name, |
974 | package_hashtable[package_num]->edge[j]->version, |
975 | package_hashtable[package_num]->edge[j]->operator); |
976 | if (package_hashtable[conflicts_package_num] == NULL) { |
977 | /* create a new package */ |
978 | common_node_t *new_node = xzalloc(sizeof(common_node_t)); |
979 | new_node->name = package_hashtable[package_num]->edge[j]->name; |
980 | new_node->version = package_hashtable[package_num]->edge[j]->version; |
981 | package_hashtable[conflicts_package_num] = new_node; |
982 | } |
983 | conflicts = xrealloc_vector(conflicts, 2, conflicts_num); |
984 | conflicts[conflicts_num] = conflicts_package_num; |
985 | conflicts_num++; |
986 | } |
987 | } |
988 | i++; |
989 | } |
990 | |
991 | /* Check conflicts */ |
992 | i = 0; |
993 | while (deb_file[i] != NULL) { |
994 | const common_node_t *package_node = package_hashtable[deb_file[i]->package]; |
995 | int status_num = 0; |
996 | status_num = search_status_hashtable(name_hashtable[package_node->name]); |
997 | |
998 | if (get_status(status_num, 3) == search_name_hashtable("installed")) { |
999 | i++; |
1000 | continue; |
1001 | } |
1002 | |
1003 | for (j = 0; j < package_node->num_of_edges; j++) { |
1004 | const edge_t *package_edge = package_node->edge[j]; |
1005 | |
1006 | if (package_edge->type == EDGE_CONFLICTS) { |
1007 | const unsigned package_num = |
1008 | search_package_hashtable(package_edge->name, |
1009 | package_edge->version, |
1010 | package_edge->operator); |
1011 | int result = 0; |
1012 | if (package_hashtable[package_num] != NULL) { |
1013 | status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]); |
1014 | |
1015 | if (get_status(status_num, 1) == search_name_hashtable("install")) { |
1016 | result = test_version(package_hashtable[deb_file[i]->package]->version, |
1017 | package_edge->version, package_edge->operator); |
1018 | } |
1019 | } |
1020 | |
1021 | if (result) { |
1022 | bb_error_msg_and_die("package %s conflicts with %s", |
1023 | name_hashtable[package_node->name], |
1024 | name_hashtable[package_edge->name]); |
1025 | } |
1026 | } |
1027 | } |
1028 | i++; |
1029 | } |
1030 | |
1031 | |
1032 | /* Check dependendcies */ |
1033 | for (i = 0; i < PACKAGE_HASH_PRIME; i++) { |
1034 | int status_num = 0; |
1035 | int number_of_alternatives = 0; |
1036 | const edge_t * root_of_alternatives = NULL; |
1037 | const common_node_t *package_node = package_hashtable[i]; |
1038 | |
1039 | /* If the package node does not exist then this |
1040 | * package is a virtual one. In which case there are |
1041 | * no dependencies to check. |
1042 | */ |
1043 | if (package_node == NULL) continue; |
1044 | |
1045 | status_num = search_status_hashtable(name_hashtable[package_node->name]); |
1046 | |
1047 | /* If there is no status then this package is a |
1048 | * virtual one provided by something else. In which |
1049 | * case there are no dependencies to check. |
1050 | */ |
1051 | if (status_hashtable[status_num] == NULL) continue; |
1052 | |
1053 | /* If we don't want this package installed then we may |
1054 | * as well ignore it's dependencies. |
1055 | */ |
1056 | if (get_status(status_num, 1) != search_name_hashtable("install")) { |
1057 | continue; |
1058 | } |
1059 | |
1060 | /* This code is tested only for EDGE_DEPENDS, since I |
1061 | * have no suitable pre-depends available. There is no |
1062 | * reason that it shouldn't work though :-) |
1063 | */ |
1064 | for (j = 0; j < package_node->num_of_edges; j++) { |
1065 | const edge_t *package_edge = package_node->edge[j]; |
1066 | unsigned package_num; |
1067 | |
1068 | if (package_edge->type == EDGE_OR_PRE_DEPENDS |
1069 | || package_edge->type == EDGE_OR_DEPENDS |
1070 | ) { /* start an EDGE_OR_ list */ |
1071 | number_of_alternatives = package_edge->version; |
1072 | root_of_alternatives = package_edge; |
1073 | continue; |
1074 | } |
1075 | if (number_of_alternatives == 0) { /* not in the middle of an EDGE_OR_ list */ |
1076 | number_of_alternatives = 1; |
1077 | root_of_alternatives = NULL; |
1078 | } |
1079 | |
1080 | package_num = search_package_hashtable(package_edge->name, package_edge->version, package_edge->operator); |
1081 | |
1082 | if (package_edge->type == EDGE_PRE_DEPENDS |
1083 | || package_edge->type == EDGE_DEPENDS |
1084 | ) { |
1085 | int result=1; |
1086 | status_num = 0; |
1087 | |
1088 | /* If we are inside an alternative then check |
1089 | * this edge is the right type. |
1090 | * |
1091 | * EDGE_DEPENDS == OR_DEPENDS -1 |
1092 | * EDGE_PRE_DEPENDS == OR_PRE_DEPENDS -1 |
1093 | */ |
1094 | if (root_of_alternatives && package_edge->type != root_of_alternatives->type - 1) |
1095 | bb_error_msg_and_die("fatal error, package dependencies corrupt: %d != %d - 1", |
1096 | package_edge->type, root_of_alternatives->type); |
1097 | |
1098 | if (package_hashtable[package_num] != NULL) |
1099 | result = !package_satisfies_dependency(package_num, package_edge->type); |
1100 | |
1101 | if (result) { /* check for other package which provide what we are looking for */ |
1102 | int provider = -1; |
1103 | |
1104 | while ((provider = search_for_provides(package_edge->name, provider)) > -1) { |
1105 | if (package_hashtable[provider] == NULL) { |
1106 | puts("Have a provider but no package information for it"); |
1107 | continue; |
1108 | } |
1109 | result = !package_satisfies_dependency(provider, package_edge->type); |
1110 | |
1111 | if (result == 0) |
1112 | break; |
1113 | } |
1114 | } |
1115 | |
1116 | /* It must be already installed, or to be installed */ |
1117 | number_of_alternatives--; |
1118 | if (result && number_of_alternatives == 0) { |
1119 | if (root_of_alternatives) |
1120 | bb_error_msg_and_die( |
1121 | "package %s %sdepends on %s, " |
1122 | "which cannot be satisfied", |
1123 | name_hashtable[package_node->name], |
1124 | package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "", |
1125 | name_hashtable[root_of_alternatives->name]); |
1126 | bb_error_msg_and_die( |
1127 | "package %s %sdepends on %s, which %s\n", |
1128 | name_hashtable[package_node->name], |
1129 | package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "", |
1130 | name_hashtable[package_edge->name], |
1131 | describe_status(status_num)); |
1132 | } |
1133 | if (result == 0 && number_of_alternatives) { |
1134 | /* we've found a package which |
1135 | * satisfies the dependency, |
1136 | * so skip over the rest of |
1137 | * the alternatives. |
1138 | */ |
1139 | j += number_of_alternatives; |
1140 | number_of_alternatives = 0; |
1141 | } |
1142 | } |
1143 | } |
1144 | } |
1145 | free(conflicts); |
1146 | return TRUE; |
1147 | } |
1148 | |
1149 | static char **create_list(const char *filename) |
1150 | { |
1151 | FILE *list_stream; |
1152 | char **file_list; |
1153 | char *line; |
1154 | int count; |
1155 | |
1156 | /* don't use [xw]fopen here, handle error ourself */ |
1157 | list_stream = fopen_for_read(filename); |
1158 | if (list_stream == NULL) { |
1159 | return NULL; |
1160 | } |
1161 | |
1162 | file_list = NULL; |
1163 | count = 0; |
1164 | while ((line = xmalloc_fgetline(list_stream)) != NULL) { |
1165 | file_list = xrealloc_vector(file_list, 2, count); |
1166 | file_list[count++] = line; |
1167 | /*file_list[count] = NULL; - xrealloc_vector did it */ |
1168 | } |
1169 | fclose(list_stream); |
1170 | |
1171 | return file_list; |
1172 | } |
1173 | |
1174 | /* maybe i should try and hook this into remove_file.c somehow */ |
1175 | static int remove_file_array(char **remove_names, char **exclude_names) |
1176 | { |
1177 | struct stat path_stat; |
1178 | int remove_flag = 1; /* not removed anything yet */ |
1179 | int i, j; |
1180 | |
1181 | if (remove_names == NULL) { |
1182 | return 0; |
1183 | } |
1184 | for (i = 0; remove_names[i] != NULL; i++) { |
1185 | if (exclude_names != NULL) { |
1186 | for (j = 0; exclude_names[j] != NULL; j++) { |
1187 | if (strcmp(remove_names[i], exclude_names[j]) == 0) { |
1188 | goto skip; |
1189 | } |
1190 | } |
1191 | } |
1192 | /* TODO: why we are checking lstat? we can just try rm/rmdir */ |
1193 | if (lstat(remove_names[i], &path_stat) < 0) { |
1194 | continue; |
1195 | } |
1196 | if (S_ISDIR(path_stat.st_mode)) { |
1197 | remove_flag &= rmdir(remove_names[i]); /* 0 if no error */ |
1198 | } else { |
1199 | remove_flag &= unlink(remove_names[i]); /* 0 if no error */ |
1200 | } |
1201 | skip: |
1202 | continue; |
1203 | } |
1204 | return (remove_flag == 0); |
1205 | } |
1206 | |
1207 | static void run_package_script_or_die(const char *package_name, const char *script_type) |
1208 | { |
1209 | char *script_path; |
1210 | int result; |
1211 | |
1212 | script_path = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, script_type); |
1213 | |
1214 | /* If the file doesnt exist is isnt fatal */ |
1215 | result = access(script_path, F_OK) ? EXIT_SUCCESS : system(script_path); |
1216 | free(script_path); |
1217 | if (result) |
1218 | bb_error_msg_and_die("%s failed, exit code %d", script_type, result); |
1219 | } |
1220 | |
1221 | /* |
1222 | The policy manual defines what scripts get called when and with |
1223 | what arguments. I realize that busybox does not support all of |
1224 | these scenarios, but it does support some of them; it does not, |
1225 | however, run them with any parameters in run_package_script_or_die(). |
1226 | Here are the scripts: |
1227 | |
1228 | preinst install |
1229 | preinst install <old_version> |
1230 | preinst upgrade <old_version> |
1231 | preinst abort_upgrade <new_version> |
1232 | postinst configure <most_recent_version> |
1233 | postinst abort-upgade <new_version> |
1234 | postinst abort-remove |
1235 | postinst abort-remove in-favour <package> <version> |
1236 | postinst abort-deconfigure in-favor <failed_install_package> removing <conflicting_package> <version> |
1237 | prerm remove |
1238 | prerm upgrade <new_version> |
1239 | prerm failed-upgrade <old_version> |
1240 | prerm remove in-favor <package> <new_version> |
1241 | prerm deconfigure in-favour <package> <version> removing <package> <version> |
1242 | postrm remove |
1243 | postrm purge |
1244 | postrm upgrade <new_version> |
1245 | postrm failed-upgrade <old_version> |
1246 | postrm abort-install |
1247 | postrm abort-install <old_version> |
1248 | postrm abort-upgrade <old_version> |
1249 | postrm disappear <overwriter> <version> |
1250 | */ |
1251 | static const char *const all_control_files[] = { |
1252 | "preinst", "postinst", "prerm", "postrm", |
1253 | "list", "md5sums", "shlibs", "conffiles", |
1254 | "config", "templates" |
1255 | }; |
1256 | |
1257 | static char **all_control_list(const char *package_name) |
1258 | { |
1259 | unsigned i = 0; |
1260 | char **remove_files; |
1261 | |
1262 | /* Create a list of all /var/lib/dpkg/info/<package> files */ |
1263 | remove_files = xzalloc(sizeof(all_control_files) + sizeof(char*)); |
1264 | while (i < ARRAY_SIZE(all_control_files)) { |
1265 | remove_files[i] = xasprintf("/var/lib/dpkg/info/%s.%s", |
1266 | package_name, all_control_files[i]); |
1267 | i++; |
1268 | } |
1269 | |
1270 | return remove_files; |
1271 | } |
1272 | |
1273 | static void free_array(char **array) |
1274 | { |
1275 | if (array) { |
1276 | unsigned i = 0; |
1277 | while (array[i]) { |
1278 | free(array[i]); |
1279 | i++; |
1280 | } |
1281 | free(array); |
1282 | } |
1283 | } |
1284 | |
1285 | /* This function lists information on the installed packages. It loops through |
1286 | * the status_hashtable to retrieve the info. This results in smaller code than |
1287 | * scanning the status file. The resulting list, however, is unsorted. |
1288 | */ |
1289 | static void list_packages(const char *pattern) |
1290 | { |
1291 | int i; |
1292 | |
1293 | puts(" Name Version"); |
1294 | puts("+++-==============-=============="); |
1295 | |
1296 | /* go through status hash, dereference package hash and finally strings */ |
1297 | for (i = 0; i < STATUS_HASH_PRIME+1; i++) { |
1298 | if (status_hashtable[i]) { |
1299 | const char *stat_str; /* status string */ |
1300 | const char *name_str; /* package name */ |
1301 | const char *vers_str; /* version */ |
1302 | char s1, s2; /* status abbreviations */ |
1303 | int spccnt; /* space count */ |
1304 | int j; |
1305 | |
1306 | stat_str = name_hashtable[status_hashtable[i]->status]; |
1307 | name_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->name]; |
1308 | vers_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->version]; |
1309 | |
1310 | if (pattern && fnmatch(pattern, name_str, 0) != 0) |
1311 | continue; |
1312 | |
1313 | /* get abbreviation for status field 1 */ |
1314 | s1 = stat_str[0] == 'i' ? 'i' : 'r'; |
1315 | |
1316 | /* get abbreviation for status field 2 */ |
1317 | for (j = 0, spccnt = 0; stat_str[j] && spccnt < 2; j++) { |
1318 | if (stat_str[j] == ' ') spccnt++; |
1319 | } |
1320 | s2 = stat_str[j]; |
1321 | |
1322 | /* print out the line formatted like Debian dpkg */ |
1323 | printf("%c%c %-14s %s\n", s1, s2, name_str, vers_str); |
1324 | } |
1325 | } |
1326 | } |
1327 | |
1328 | static void remove_package(const unsigned package_num, int noisy) |
1329 | { |
1330 | const char *package_name = name_hashtable[package_hashtable[package_num]->name]; |
1331 | const char *package_version = name_hashtable[package_hashtable[package_num]->version]; |
1332 | const unsigned status_num = search_status_hashtable(package_name); |
1333 | const int package_name_length = strlen(package_name); |
1334 | char **remove_files; |
1335 | char **exclude_files; |
1336 | char list_name[package_name_length + 25]; |
1337 | char conffile_name[package_name_length + 30]; |
1338 | |
1339 | if (noisy) |
1340 | printf("Removing %s (%s)...\n", package_name, package_version); |
1341 | |
1342 | /* Run prerm script */ |
1343 | run_package_script_or_die(package_name, "prerm"); |
1344 | |
1345 | /* Create a list of files to remove, and a separate list of those to keep */ |
1346 | sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list"); |
1347 | remove_files = create_list(list_name); |
1348 | |
1349 | sprintf(conffile_name, "/var/lib/dpkg/info/%s.%s", package_name, "conffiles"); |
1350 | exclude_files = create_list(conffile_name); |
1351 | |
1352 | /* Some directories can't be removed straight away, so do multiple passes */ |
1353 | while (remove_file_array(remove_files, exclude_files)) |
1354 | continue; |
1355 | free_array(exclude_files); |
1356 | free_array(remove_files); |
1357 | |
1358 | /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */ |
1359 | exclude_files = xzalloc(sizeof(exclude_files[0]) * 3); |
1360 | exclude_files[0] = xstrdup(conffile_name); |
1361 | exclude_files[1] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm"); |
1362 | |
1363 | /* Create a list of all /var/lib/dpkg/info/<package> files */ |
1364 | remove_files = all_control_list(package_name); |
1365 | |
1366 | remove_file_array(remove_files, exclude_files); |
1367 | free_array(remove_files); |
1368 | free_array(exclude_files); |
1369 | |
1370 | /* rename <package>.conffiles to <package>.list |
1371 | * The conffiles control file isn't required in Debian packages, so don't |
1372 | * error out if it's missing. */ |
1373 | rename(conffile_name, list_name); |
1374 | |
1375 | /* Change package status */ |
1376 | set_status(status_num, "config-files", 3); |
1377 | } |
1378 | |
1379 | static void purge_package(const unsigned package_num) |
1380 | { |
1381 | const char *package_name = name_hashtable[package_hashtable[package_num]->name]; |
1382 | const char *package_version = name_hashtable[package_hashtable[package_num]->version]; |
1383 | const unsigned status_num = search_status_hashtable(package_name); |
1384 | char **remove_files; |
1385 | char **exclude_files; |
1386 | char list_name[strlen(package_name) + 25]; |
1387 | |
1388 | printf("Purging %s (%s)...\n", package_name, package_version); |
1389 | |
1390 | /* Run prerm script */ |
1391 | run_package_script_or_die(package_name, "prerm"); |
1392 | |
1393 | /* Create a list of files to remove */ |
1394 | sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list"); |
1395 | remove_files = create_list(list_name); |
1396 | |
1397 | /* Some directories cant be removed straight away, so do multiple passes */ |
1398 | while (remove_file_array(remove_files, NULL)) |
1399 | continue; |
1400 | free_array(remove_files); |
1401 | |
1402 | /* Create a list of all /var/lib/dpkg/info/<package> files */ |
1403 | remove_files = all_control_list(package_name); |
1404 | |
1405 | /* Delete all of them except the postrm script */ |
1406 | exclude_files = xzalloc(sizeof(exclude_files[0]) * 2); |
1407 | exclude_files[0] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm"); |
1408 | remove_file_array(remove_files, exclude_files); |
1409 | free_array(exclude_files); |
1410 | |
1411 | /* Run and remove postrm script */ |
1412 | run_package_script_or_die(package_name, "postrm"); |
1413 | remove_file_array(remove_files, NULL); |
1414 | |
1415 | free_array(remove_files); |
1416 | |
1417 | /* Change package status */ |
1418 | set_status(status_num, "not-installed", 3); |
1419 | } |
1420 | |
1421 | static archive_handle_t *init_archive_deb_ar(const char *filename) |
1422 | { |
1423 | archive_handle_t *ar_handle; |
1424 | |
1425 | /* Setup an ar archive handle that refers to the gzip sub archive */ |
1426 | ar_handle = init_handle(); |
1427 | ar_handle->filter = filter_accept_list_reassign; |
1428 | ar_handle->src_fd = xopen(filename, O_RDONLY); |
1429 | |
1430 | return ar_handle; |
1431 | } |
1432 | |
1433 | static void init_archive_deb_control(archive_handle_t *ar_handle) |
1434 | { |
1435 | archive_handle_t *tar_handle; |
1436 | |
1437 | /* Setup the tar archive handle */ |
1438 | tar_handle = init_handle(); |
1439 | tar_handle->src_fd = ar_handle->src_fd; |
1440 | |
1441 | /* We don't care about data.tar.* or debian-binary, just control.tar.* */ |
1442 | #if ENABLE_FEATURE_SEAMLESS_GZ |
1443 | llist_add_to(&(ar_handle->accept), (char*)"control.tar.gz"); |
1444 | #endif |
1445 | #if ENABLE_FEATURE_SEAMLESS_BZ2 |
1446 | llist_add_to(&(ar_handle->accept), (char*)"control.tar.bz2"); |
1447 | #endif |
1448 | |
1449 | /* Assign the tar handle as a subarchive of the ar handle */ |
1450 | ar_handle->dpkg__sub_archive = tar_handle; |
1451 | } |
1452 | |
1453 | static void init_archive_deb_data(archive_handle_t *ar_handle) |
1454 | { |
1455 | archive_handle_t *tar_handle; |
1456 | |
1457 | /* Setup the tar archive handle */ |
1458 | tar_handle = init_handle(); |
1459 | tar_handle->src_fd = ar_handle->src_fd; |
1460 | |
1461 | /* We don't care about control.tar.* or debian-binary, just data.tar.* */ |
1462 | #if ENABLE_FEATURE_SEAMLESS_GZ |
1463 | llist_add_to(&(ar_handle->accept), (char*)"data.tar.gz"); |
1464 | #endif |
1465 | #if ENABLE_FEATURE_SEAMLESS_BZ2 |
1466 | llist_add_to(&(ar_handle->accept), (char*)"data.tar.bz2"); |
1467 | #endif |
1468 | |
1469 | /* Assign the tar handle as a subarchive of the ar handle */ |
1470 | ar_handle->dpkg__sub_archive = tar_handle; |
1471 | } |
1472 | |
1473 | static void FAST_FUNC data_extract_to_buffer(archive_handle_t *archive_handle) |
1474 | { |
1475 | unsigned size = archive_handle->file_header->size; |
1476 | |
1477 | archive_handle->dpkg__buffer = xzalloc(size + 1); |
1478 | xread(archive_handle->src_fd, archive_handle->dpkg__buffer, size); |
1479 | } |
1480 | |
1481 | static char *deb_extract_control_file_to_buffer(archive_handle_t *ar_handle, llist_t *myaccept) |
1482 | { |
1483 | ar_handle->dpkg__sub_archive->action_data = data_extract_to_buffer; |
1484 | ar_handle->dpkg__sub_archive->accept = myaccept; |
1485 | ar_handle->dpkg__sub_archive->filter = filter_accept_list; |
1486 | |
1487 | unpack_ar_archive(ar_handle); |
1488 | close(ar_handle->src_fd); |
1489 | |
1490 | return ar_handle->dpkg__sub_archive->dpkg__buffer; |
1491 | } |
1492 | |
1493 | static void append_control_file_to_llist(const char *package_name, const char *control_name, llist_t **ll) |
1494 | { |
1495 | FILE *fp; |
1496 | char *filename, *line; |
1497 | |
1498 | filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, control_name); |
1499 | fp = fopen_for_read(filename); |
1500 | free(filename); |
1501 | if (fp != NULL) { |
1502 | while ((line = xmalloc_fgetline(fp)) != NULL) |
1503 | llist_add_to(ll, line); |
1504 | fclose(fp); |
1505 | } |
1506 | } |
1507 | |
1508 | static char FAST_FUNC filter_rename_config(archive_handle_t *archive_handle) |
1509 | { |
1510 | int fd; |
1511 | char *name_ptr = archive_handle->file_header->name + 1; |
1512 | |
1513 | /* Is this file marked as config file? */ |
1514 | if (!find_list_entry(archive_handle->accept, name_ptr)) |
1515 | return EXIT_SUCCESS; /* no */ |
1516 | |
1517 | fd = open(name_ptr, O_RDONLY); |
1518 | if (fd >= 0) { |
1519 | md5_ctx_t md5; |
1520 | char *md5line, *buf; |
1521 | int count; |
1522 | |
1523 | /* Calculate MD5 of existing file */ |
1524 | buf = xmalloc(4096); |
1525 | md5_begin(&md5); |
1526 | while ((count = safe_read(fd, buf, 4096)) > 0) |
1527 | md5_hash(buf, count, &md5); |
1528 | md5_end(buf, &md5); /* using buf as result storage */ |
1529 | close(fd); |
1530 | |
1531 | md5line = xmalloc(16 * 2 + 2 + strlen(name_ptr) + 1); |
1532 | sprintf(bin2hex(md5line, buf, 16), " %s", name_ptr); |
1533 | free(buf); |
1534 | |
1535 | /* Is it changed after install? */ |
1536 | if (find_list_entry(archive_handle->accept, md5line) == NULL) { |
1537 | printf("Warning: Creating %s as %s.dpkg-new\n", name_ptr, name_ptr); |
1538 | archive_handle->file_header->name = xasprintf("%s.dpkg-new", archive_handle->file_header->name); |
1539 | } |
1540 | free(md5line); |
1541 | } |
1542 | return EXIT_SUCCESS; |
1543 | } |
1544 | |
1545 | static void FAST_FUNC data_extract_all_prefix(archive_handle_t *archive_handle) |
1546 | { |
1547 | char *name_ptr = archive_handle->file_header->name; |
1548 | |
1549 | /* Skip all leading "/" */ |
1550 | while (*name_ptr == '/') |
1551 | name_ptr++; |
1552 | /* Skip all leading "./" and "../" */ |
1553 | while (name_ptr[0] == '.') { |
1554 | if (name_ptr[1] == '.') |
1555 | name_ptr++; |
1556 | if (name_ptr[1] != '/') |
1557 | break; |
1558 | name_ptr += 2; |
1559 | } |
1560 | |
1561 | if (name_ptr[0] != '\0') { |
1562 | archive_handle->file_header->name = xasprintf("%s%s", archive_handle->dpkg__buffer, name_ptr); |
1563 | data_extract_all(archive_handle); |
1564 | if (fnmatch("*.dpkg-new", archive_handle->file_header->name, 0) == 0) { |
1565 | /* remove .dpkg-new suffix */ |
1566 | archive_handle->file_header->name[strlen(archive_handle->file_header->name) - 9] = '\0'; |
1567 | } |
1568 | } |
1569 | } |
1570 | |
1571 | enum { |
1572 | /* Commands */ |
1573 | OPT_configure = (1 << 0), |
1574 | OPT_install = (1 << 1), |
1575 | OPT_list_installed = (1 << 2), |
1576 | OPT_purge = (1 << 3), |
1577 | OPT_remove = (1 << 4), |
1578 | OPT_unpack = (1 << 5), |
1579 | OPTMASK_cmd = (1 << 6) - 1, |
1580 | /* Options */ |
1581 | OPT_force = (1 << 6), |
1582 | OPT_force_ignore_depends = (1 << 7), |
1583 | OPT_force_confnew = (1 << 8), |
1584 | OPT_force_confold = (1 << 9), |
1585 | }; |
1586 | |
1587 | static void unpack_package(deb_file_t *deb_file) |
1588 | { |
1589 | const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name]; |
1590 | const unsigned status_num = search_status_hashtable(package_name); |
1591 | const unsigned status_package_num = status_hashtable[status_num]->package; |
1592 | char *info_prefix; |
1593 | char *list_filename; |
1594 | archive_handle_t *archive_handle; |
1595 | FILE *out_stream; |
1596 | llist_t *accept_list; |
1597 | llist_t *conffile_list; |
1598 | int i; |
1599 | |
1600 | /* If existing version, remove it first */ |
1601 | conffile_list = NULL; |
1602 | if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) { |
1603 | /* Package is already installed, remove old version first */ |
1604 | printf("Preparing to replace %s %s (using %s)...\n", package_name, |
1605 | name_hashtable[package_hashtable[status_package_num]->version], |
1606 | deb_file->filename); |
1607 | |
1608 | /* Read md5sums from old package */ |
1609 | if (!(option_mask32 & OPT_force_confold)) |
1610 | append_control_file_to_llist(package_name, "md5sums", &conffile_list); |
1611 | |
1612 | remove_package(status_package_num, 0); |
1613 | } else { |
1614 | printf("Unpacking %s (from %s)...\n", package_name, deb_file->filename); |
1615 | } |
1616 | |
1617 | /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */ |
1618 | info_prefix = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, ""); |
1619 | archive_handle = init_archive_deb_ar(deb_file->filename); |
1620 | init_archive_deb_control(archive_handle); |
1621 | |
1622 | accept_list = NULL; |
1623 | i = 0; |
1624 | while (i < ARRAY_SIZE(all_control_files)) { |
1625 | char *c = xasprintf("./%s", all_control_files[i]); |
1626 | llist_add_to(&accept_list, c); |
1627 | i++; |
1628 | } |
1629 | archive_handle->dpkg__sub_archive->accept = accept_list; |
1630 | archive_handle->dpkg__sub_archive->filter = filter_accept_list; |
1631 | archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix; |
1632 | archive_handle->dpkg__sub_archive->dpkg__buffer = info_prefix; |
1633 | archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_UNLINK_OLD; |
1634 | unpack_ar_archive(archive_handle); |
1635 | |
1636 | /* Run the preinst prior to extracting */ |
1637 | run_package_script_or_die(package_name, "preinst"); |
1638 | |
1639 | /* Don't overwrite existing config files */ |
1640 | if (!(option_mask32 & OPT_force_confnew)) |
1641 | append_control_file_to_llist(package_name, "conffiles", &conffile_list); |
1642 | |
1643 | /* Extract data.tar.gz to the root directory */ |
1644 | archive_handle = init_archive_deb_ar(deb_file->filename); |
1645 | init_archive_deb_data(archive_handle); |
1646 | archive_handle->dpkg__sub_archive->accept = conffile_list; |
1647 | archive_handle->dpkg__sub_archive->filter = filter_rename_config; |
1648 | archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix; |
1649 | archive_handle->dpkg__sub_archive->dpkg__buffer = (char*)"/"; /* huh? */ |
1650 | archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_UNLINK_OLD; |
1651 | unpack_ar_archive(archive_handle); |
1652 | |
1653 | /* Create the list file */ |
1654 | list_filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "list"); |
1655 | out_stream = xfopen_for_write(list_filename); |
1656 | while (archive_handle->dpkg__sub_archive->passed) { |
1657 | /* the leading . has been stripped by data_extract_all_prefix already */ |
1658 | fputs(archive_handle->dpkg__sub_archive->passed->data, out_stream); |
1659 | fputc('\n', out_stream); |
1660 | archive_handle->dpkg__sub_archive->passed = archive_handle->dpkg__sub_archive->passed->link; |
1661 | } |
1662 | fclose(out_stream); |
1663 | |
1664 | /* change status */ |
1665 | set_status(status_num, "install", 1); |
1666 | set_status(status_num, "unpacked", 3); |
1667 | |
1668 | free(info_prefix); |
1669 | free(list_filename); |
1670 | } |
1671 | |
1672 | static void configure_package(deb_file_t *deb_file) |
1673 | { |
1674 | const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name]; |
1675 | const char *package_version = name_hashtable[package_hashtable[deb_file->package]->version]; |
1676 | const int status_num = search_status_hashtable(package_name); |
1677 | |
1678 | printf("Setting up %s (%s)...\n", package_name, package_version); |
1679 | |
1680 | /* Run the postinst script */ |
1681 | /* TODO: handle failure gracefully */ |
1682 | run_package_script_or_die(package_name, "postinst"); |
1683 | |
1684 | /* Change status to reflect success */ |
1685 | set_status(status_num, "install", 1); |
1686 | set_status(status_num, "installed", 3); |
1687 | } |
1688 | |
1689 | int dpkg_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
1690 | int dpkg_main(int argc UNUSED_PARAM, char **argv) |
1691 | { |
1692 | deb_file_t **deb_file = NULL; |
1693 | status_node_t *status_node; |
1694 | char *str_f; |
1695 | int opt; |
1696 | int package_num; |
1697 | int deb_count = 0; |
1698 | int state_status; |
1699 | int status_num; |
1700 | int i; |
1701 | #if ENABLE_LONG_OPTS |
1702 | static const char dpkg_longopts[] ALIGN1 = |
1703 | // FIXME: we use -C non-compatibly, should be: |
1704 | // "-C|--audit Check for broken package(s)" |
1705 | "configure\0" No_argument "C" |
1706 | "force\0" Required_argument "F" |
1707 | "install\0" No_argument "i" |
1708 | "list\0" No_argument "l" |
1709 | "purge\0" No_argument "P" |
1710 | "remove\0" No_argument "r" |
1711 | "unpack\0" No_argument "u" |
1712 | "force-depends\0" No_argument "\xff" |
1713 | "force-confnew\0" No_argument "\xfe" |
1714 | "force-confold\0" No_argument "\xfd" |
1715 | ; |
1716 | #endif |
1717 | |
1718 | INIT_G(); |
1719 | |
1720 | IF_LONG_OPTS(applet_long_options = dpkg_longopts); |
1721 | opt = getopt32(argv, "CilPruF:", &str_f); |
1722 | argv += optind; |
1723 | //if (opt & OPT_configure) ... // -C |
1724 | if (opt & OPT_force) { // -F (--force in official dpkg) |
1725 | if (strcmp(str_f, "depends") == 0) |
1726 | opt |= OPT_force_ignore_depends; |
1727 | else if (strcmp(str_f, "confnew") == 0) |
1728 | opt |= OPT_force_confnew; |
1729 | else if (strcmp(str_f, "confold") == 0) |
1730 | opt |= OPT_force_confold; |
1731 | else |
1732 | bb_show_usage(); |
1733 | option_mask32 = opt; |
1734 | } |
1735 | //if (opt & OPT_install) ... // -i |
1736 | //if (opt & OPT_list_installed) ... // -l |
1737 | //if (opt & OPT_purge) ... // -P |
1738 | //if (opt & OPT_remove) ... // -r |
1739 | //if (opt & OPT_unpack) ... // -u (--unpack in official dpkg) |
1740 | if (!(opt & OPTMASK_cmd) /* no cmd */ |
1741 | || ((opt & OPTMASK_cmd) & ((opt & OPTMASK_cmd)-1)) /* more than one cmd */ |
1742 | ) { |
1743 | bb_show_usage(); |
1744 | } |
1745 | |
1746 | /* puts("(Reading database ... xxxxx files and directories installed.)"); */ |
1747 | index_status_file("/var/lib/dpkg/status"); |
1748 | |
1749 | /* if the list action was given print the installed packages and exit */ |
1750 | if (opt & OPT_list_installed) { |
1751 | list_packages(argv[0]); /* param can be NULL */ |
1752 | return EXIT_SUCCESS; |
1753 | } |
1754 | |
1755 | /* Read arguments and store relevant info in structs */ |
1756 | while (*argv) { |
1757 | /* deb_count = nb_elem - 1 and we need nb_elem + 1 to allocate terminal node [NULL pointer] */ |
1758 | deb_file = xrealloc_vector(deb_file, 2, deb_count); |
1759 | deb_file[deb_count] = xzalloc(sizeof(deb_file[0][0])); |
1760 | if (opt & (OPT_install | OPT_unpack)) { |
1761 | /* -i/-u: require filename */ |
1762 | archive_handle_t *archive_handle; |
1763 | llist_t *control_list = NULL; |
1764 | |
1765 | /* Extract the control file */ |
1766 | llist_add_to(&control_list, (char*)"./control"); |
1767 | archive_handle = init_archive_deb_ar(argv[0]); |
1768 | init_archive_deb_control(archive_handle); |
1769 | deb_file[deb_count]->control_file = deb_extract_control_file_to_buffer(archive_handle, control_list); |
1770 | if (deb_file[deb_count]->control_file == NULL) { |
1771 | bb_error_msg_and_die("can't extract control file"); |
1772 | } |
1773 | deb_file[deb_count]->filename = xstrdup(argv[0]); |
1774 | package_num = fill_package_struct(deb_file[deb_count]->control_file); |
1775 | |
1776 | if (package_num == -1) { |
1777 | bb_error_msg("invalid control file in %s", argv[0]); |
1778 | argv++; |
1779 | continue; |
1780 | } |
1781 | deb_file[deb_count]->package = (unsigned) package_num; |
1782 | |
1783 | /* Add the package to the status hashtable */ |
1784 | if (opt & (OPT_unpack | OPT_install)) { |
1785 | /* Try and find a currently installed version of this package */ |
1786 | status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]); |
1787 | /* If no previous entry was found initialise a new entry */ |
1788 | if (status_hashtable[status_num] == NULL |
1789 | || status_hashtable[status_num]->status == 0 |
1790 | ) { |
1791 | status_node = xmalloc(sizeof(status_node_t)); |
1792 | status_node->package = deb_file[deb_count]->package; |
1793 | /* reinstreq isnt changed to "ok" until the package control info |
1794 | * is written to the status file*/ |
1795 | status_node->status = search_name_hashtable("install reinstreq not-installed"); |
1796 | status_hashtable[status_num] = status_node; |
1797 | } else { |
1798 | set_status(status_num, "install", 1); |
1799 | set_status(status_num, "reinstreq", 2); |
1800 | } |
1801 | } |
1802 | } else if (opt & (OPT_configure | OPT_purge | OPT_remove)) { |
1803 | /* -C/-p/-r: require package name */ |
1804 | deb_file[deb_count]->package = search_package_hashtable( |
1805 | search_name_hashtable(argv[0]), |
1806 | search_name_hashtable("ANY"), VER_ANY); |
1807 | if (package_hashtable[deb_file[deb_count]->package] == NULL) { |
1808 | bb_error_msg_and_die("package %s is uninstalled or unknown", argv[0]); |
1809 | } |
1810 | package_num = deb_file[deb_count]->package; |
1811 | status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]); |
1812 | state_status = get_status(status_num, 3); |
1813 | |
1814 | /* check package status is "installed" */ |
1815 | if (opt & OPT_remove) { |
1816 | if (strcmp(name_hashtable[state_status], "not-installed") == 0 |
1817 | || strcmp(name_hashtable[state_status], "config-files") == 0 |
1818 | ) { |
1819 | bb_error_msg_and_die("%s is already removed", name_hashtable[package_hashtable[package_num]->name]); |
1820 | } |
1821 | set_status(status_num, "deinstall", 1); |
1822 | } else if (opt & OPT_purge) { |
1823 | /* if package status is "conf-files" then its ok */ |
1824 | if (strcmp(name_hashtable[state_status], "not-installed") == 0) { |
1825 | bb_error_msg_and_die("%s is already purged", name_hashtable[package_hashtable[package_num]->name]); |
1826 | } |
1827 | set_status(status_num, "purge", 1); |
1828 | } |
1829 | } |
1830 | deb_count++; |
1831 | argv++; |
1832 | } |
1833 | if (!deb_count) |
1834 | bb_error_msg_and_die("no package files specified"); |
1835 | deb_file[deb_count] = NULL; |
1836 | |
1837 | /* Check that the deb file arguments are installable */ |
1838 | if (!(opt & OPT_force_ignore_depends)) { |
1839 | if (!check_deps(deb_file, 0 /*, deb_count*/)) { |
1840 | bb_error_msg_and_die("dependency check failed"); |
1841 | } |
1842 | } |
1843 | |
1844 | /* TODO: install or remove packages in the correct dependency order */ |
1845 | for (i = 0; i < deb_count; i++) { |
1846 | /* Remove or purge packages */ |
1847 | if (opt & OPT_remove) { |
1848 | remove_package(deb_file[i]->package, 1); |
1849 | } |
1850 | else if (opt & OPT_purge) { |
1851 | purge_package(deb_file[i]->package); |
1852 | } |
1853 | else if (opt & OPT_unpack) { |
1854 | unpack_package(deb_file[i]); |
1855 | } |
1856 | else if (opt & OPT_install) { |
1857 | unpack_package(deb_file[i]); |
1858 | /* package is configured in second pass below */ |
1859 | } |
1860 | else if (opt & OPT_configure) { |
1861 | configure_package(deb_file[i]); |
1862 | } |
1863 | } |
1864 | /* configure installed packages */ |
1865 | if (opt & OPT_install) { |
1866 | for (i = 0; i < deb_count; i++) |
1867 | configure_package(deb_file[i]); |
1868 | } |
1869 | |
1870 | write_status_file(deb_file); |
1871 | |
1872 | if (ENABLE_FEATURE_CLEAN_UP) { |
1873 | for (i = 0; i < deb_count; i++) { |
1874 | free(deb_file[i]->control_file); |
1875 | free(deb_file[i]->filename); |
1876 | free(deb_file[i]); |
1877 | } |
1878 | |
1879 | free(deb_file); |
1880 | |
1881 | for (i = 0; i < NAME_HASH_PRIME; i++) { |
1882 | free(name_hashtable[i]); |
1883 | } |
1884 | |
1885 | for (i = 0; i < PACKAGE_HASH_PRIME; i++) { |
1886 | free_package(package_hashtable[i]); |
1887 | } |
1888 | |
1889 | for (i = 0; i < STATUS_HASH_PRIME; i++) { |
1890 | free(status_hashtable[i]); |
1891 | } |
1892 | |
1893 | free(status_hashtable); |
1894 | free(package_hashtable); |
1895 | free(name_hashtable); |
1896 | } |
1897 | |
1898 | return EXIT_SUCCESS; |
1899 | } |