blob: 83160f975eaecd5671cb3c0628cce1f9e9bc4f1e
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini rpm applet for busybox |
4 | * |
5 | * Copyright (C) 2001,2002 by Laurence Anderson |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
8 | */ |
9 | |
10 | //config:config RPM |
11 | //config: bool "rpm" |
12 | //config: default y |
13 | //config: help |
14 | //config: Mini RPM applet - queries and extracts RPM packages. |
15 | |
16 | //applet:IF_RPM(APPLET(rpm, BB_DIR_BIN, BB_SUID_DROP)) |
17 | //kbuild:lib-$(CONFIG_RPM) += rpm.o |
18 | |
19 | //usage:#define rpm_trivial_usage |
20 | //usage: "-i PACKAGE.rpm; rpm -qp[ildc] PACKAGE.rpm" |
21 | //usage:#define rpm_full_usage "\n\n" |
22 | //usage: "Manipulate RPM packages\n" |
23 | //usage: "\nCommands:" |
24 | //usage: "\n -i Install package" |
25 | //usage: "\n -qp Query package" |
26 | //usage: "\n -qpi Show information" |
27 | //usage: "\n -qpl List contents" |
28 | //usage: "\n -qpd List documents" |
29 | //usage: "\n -qpc List config files" |
30 | |
31 | #include "libbb.h" |
32 | #include "common_bufsiz.h" |
33 | #include "bb_archive.h" |
34 | #include "rpm.h" |
35 | |
36 | #define RPM_CHAR_TYPE 1 |
37 | #define RPM_INT8_TYPE 2 |
38 | #define RPM_INT16_TYPE 3 |
39 | #define RPM_INT32_TYPE 4 |
40 | /* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */ |
41 | #define RPM_STRING_TYPE 6 |
42 | #define RPM_BIN_TYPE 7 |
43 | #define RPM_STRING_ARRAY_TYPE 8 |
44 | #define RPM_I18NSTRING_TYPE 9 |
45 | |
46 | #define TAG_NAME 1000 |
47 | #define TAG_VERSION 1001 |
48 | #define TAG_RELEASE 1002 |
49 | #define TAG_SUMMARY 1004 |
50 | #define TAG_DESCRIPTION 1005 |
51 | #define TAG_BUILDTIME 1006 |
52 | #define TAG_BUILDHOST 1007 |
53 | #define TAG_SIZE 1009 |
54 | #define TAG_VENDOR 1011 |
55 | #define TAG_LICENSE 1014 |
56 | #define TAG_PACKAGER 1015 |
57 | #define TAG_GROUP 1016 |
58 | #define TAG_URL 1020 |
59 | #define TAG_PREIN 1023 |
60 | #define TAG_POSTIN 1024 |
61 | #define TAG_FILEFLAGS 1037 |
62 | #define TAG_FILEUSERNAME 1039 |
63 | #define TAG_FILEGROUPNAME 1040 |
64 | #define TAG_SOURCERPM 1044 |
65 | #define TAG_PREINPROG 1085 |
66 | #define TAG_POSTINPROG 1086 |
67 | #define TAG_PREFIXS 1098 |
68 | #define TAG_DIRINDEXES 1116 |
69 | #define TAG_BASENAMES 1117 |
70 | #define TAG_DIRNAMES 1118 |
71 | |
72 | #define RPMFILE_CONFIG (1 << 0) |
73 | #define RPMFILE_DOC (1 << 1) |
74 | |
75 | enum rpm_functions_e { |
76 | rpm_query = 1, |
77 | rpm_install = 2, |
78 | rpm_query_info = 4, |
79 | rpm_query_package = 8, |
80 | rpm_query_list = 16, |
81 | rpm_query_list_doc = 32, |
82 | rpm_query_list_config = 64 |
83 | }; |
84 | |
85 | typedef struct { |
86 | uint32_t tag; /* 4 byte tag */ |
87 | uint32_t type; /* 4 byte type */ |
88 | uint32_t offset; /* 4 byte offset */ |
89 | uint32_t count; /* 4 byte count */ |
90 | } rpm_index; |
91 | |
92 | struct globals { |
93 | void *map; |
94 | rpm_index **mytags; |
95 | int tagcount; |
96 | } FIX_ALIASING; |
97 | #define G (*(struct globals*)bb_common_bufsiz1) |
98 | #define INIT_G() do { setup_common_bufsiz(); } while (0) |
99 | |
100 | static void extract_cpio(int fd, const char *source_rpm) |
101 | { |
102 | archive_handle_t *archive_handle; |
103 | |
104 | if (source_rpm != NULL) { |
105 | /* Binary rpm (it was built from some SRPM), install to root */ |
106 | xchdir("/"); |
107 | } /* else: SRPM, install to current dir */ |
108 | |
109 | /* Initialize */ |
110 | archive_handle = init_handle(); |
111 | archive_handle->seek = seek_by_read; |
112 | archive_handle->action_data = data_extract_all; |
113 | #if 0 /* For testing (rpm -i only lists the files in internal cpio): */ |
114 | archive_handle->action_header = header_list; |
115 | archive_handle->action_data = data_skip; |
116 | #endif |
117 | archive_handle->ah_flags = ARCHIVE_RESTORE_DATE | ARCHIVE_CREATE_LEADING_DIRS |
118 | /* compat: overwrite existing files. |
119 | * try "rpm -i foo.src.rpm" few times in a row - |
120 | * standard rpm will not complain. |
121 | */ |
122 | | ARCHIVE_REPLACE_VIA_RENAME; |
123 | archive_handle->src_fd = fd; |
124 | /*archive_handle->offset = 0; - init_handle() did it */ |
125 | |
126 | setup_unzip_on_fd(archive_handle->src_fd, /*fail_if_not_compressed:*/ 1); |
127 | while (get_header_cpio(archive_handle) == EXIT_SUCCESS) |
128 | continue; |
129 | } |
130 | |
131 | static rpm_index **rpm_gettags(int fd, int *num_tags) |
132 | { |
133 | /* We should never need more than 200 (shrink via realloc later) */ |
134 | rpm_index **tags = xzalloc(200 * sizeof(tags[0])); |
135 | int pass, tagindex = 0; |
136 | |
137 | xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */ |
138 | |
139 | /* 1st pass is the signature headers, 2nd is the main stuff */ |
140 | for (pass = 0; pass < 2; pass++) { |
141 | struct rpm_header header; |
142 | rpm_index *tmpindex; |
143 | int storepos; |
144 | |
145 | xread(fd, &header, sizeof(header)); |
146 | if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER)) |
147 | return NULL; /* Invalid magic, or not version 1 */ |
148 | header.size = ntohl(header.size); |
149 | header.entries = ntohl(header.entries); |
150 | storepos = xlseek(fd, 0, SEEK_CUR) + header.entries * 16; |
151 | |
152 | while (header.entries--) { |
153 | tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex)); |
154 | xread(fd, tmpindex, sizeof(*tmpindex)); |
155 | tmpindex->tag = ntohl(tmpindex->tag); |
156 | tmpindex->type = ntohl(tmpindex->type); |
157 | tmpindex->count = ntohl(tmpindex->count); |
158 | tmpindex->offset = storepos + ntohl(tmpindex->offset); |
159 | if (pass == 0) |
160 | tmpindex->tag -= 743; |
161 | } |
162 | storepos = xlseek(fd, header.size, SEEK_CUR); /* Seek past store */ |
163 | /* Skip padding to 8 byte boundary after reading signature headers */ |
164 | if (pass == 0) |
165 | xlseek(fd, (-storepos) & 0x7, SEEK_CUR); |
166 | } |
167 | /* realloc tags to save space */ |
168 | tags = xrealloc(tags, tagindex * sizeof(tags[0])); |
169 | *num_tags = tagindex; |
170 | /* All done, leave the file at the start of the gzipped cpio archive */ |
171 | return tags; |
172 | } |
173 | |
174 | static int bsearch_rpmtag(const void *key, const void *item) |
175 | { |
176 | int *tag = (int *)key; |
177 | rpm_index **tmp = (rpm_index **) item; |
178 | return (*tag - tmp[0]->tag); |
179 | } |
180 | |
181 | static int rpm_getcount(int tag) |
182 | { |
183 | rpm_index **found; |
184 | found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag); |
185 | if (!found) |
186 | return 0; |
187 | return found[0]->count; |
188 | } |
189 | |
190 | static char *rpm_getstr(int tag, int itemindex) |
191 | { |
192 | rpm_index **found; |
193 | found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag); |
194 | if (!found || itemindex >= found[0]->count) |
195 | return NULL; |
196 | if (found[0]->type == RPM_STRING_TYPE |
197 | || found[0]->type == RPM_I18NSTRING_TYPE |
198 | || found[0]->type == RPM_STRING_ARRAY_TYPE |
199 | ) { |
200 | int n; |
201 | char *tmpstr = (char *) G.map + found[0]->offset; |
202 | for (n = 0; n < itemindex; n++) |
203 | tmpstr = tmpstr + strlen(tmpstr) + 1; |
204 | return tmpstr; |
205 | } |
206 | return NULL; |
207 | } |
208 | |
209 | static int rpm_getint(int tag, int itemindex) |
210 | { |
211 | rpm_index **found; |
212 | char *tmpint; |
213 | |
214 | /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ... |
215 | * it's ok to ignore it because tag won't be used as a pointer */ |
216 | found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag); |
217 | if (!found || itemindex >= found[0]->count) |
218 | return -1; |
219 | |
220 | tmpint = (char *) G.map + found[0]->offset; |
221 | if (found[0]->type == RPM_INT32_TYPE) { |
222 | tmpint += itemindex*4; |
223 | return ntohl(*(int32_t*)tmpint); |
224 | } |
225 | if (found[0]->type == RPM_INT16_TYPE) { |
226 | tmpint += itemindex*2; |
227 | return ntohs(*(int16_t*)tmpint); |
228 | } |
229 | if (found[0]->type == RPM_INT8_TYPE) { |
230 | tmpint += itemindex; |
231 | return *(int8_t*)tmpint; |
232 | } |
233 | return -1; |
234 | } |
235 | |
236 | static void fileaction_dobackup(char *filename, int fileref) |
237 | { |
238 | struct stat oldfile; |
239 | int stat_res; |
240 | char *newname; |
241 | if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) { |
242 | /* Only need to backup config files */ |
243 | stat_res = lstat(filename, &oldfile); |
244 | if (stat_res == 0 && S_ISREG(oldfile.st_mode)) { |
245 | /* File already exists - really should check MD5's etc to see if different */ |
246 | newname = xasprintf("%s.rpmorig", filename); |
247 | copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS); |
248 | remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE); |
249 | free(newname); |
250 | } |
251 | } |
252 | } |
253 | |
254 | static void fileaction_setowngrp(char *filename, int fileref) |
255 | { |
256 | /* real rpm warns: "user foo does not exist - using <you>" */ |
257 | struct passwd *pw = getpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref)); |
258 | int uid = pw ? pw->pw_uid : getuid(); /* or euid? */ |
259 | struct group *gr = getgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref)); |
260 | int gid = gr ? gr->gr_gid : getgid(); |
261 | chown(filename, uid, gid); |
262 | } |
263 | |
264 | static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref)) |
265 | { |
266 | int count = 0; |
267 | while (rpm_getstr(filetag, count)) { |
268 | char* filename = xasprintf("%s%s", |
269 | rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)), |
270 | rpm_getstr(TAG_BASENAMES, count)); |
271 | fileaction(filename, count++); |
272 | free(filename); |
273 | } |
274 | } |
275 | |
276 | int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
277 | int rpm_main(int argc, char **argv) |
278 | { |
279 | int opt, func = 0; |
280 | const unsigned pagesize = getpagesize(); |
281 | |
282 | while ((opt = getopt(argc, argv, "iqpldc")) != -1) { |
283 | switch (opt) { |
284 | case 'i': /* First arg: Install mode, with q: Information */ |
285 | if (!func) func = rpm_install; |
286 | else func |= rpm_query_info; |
287 | break; |
288 | case 'q': /* First arg: Query mode */ |
289 | if (func) bb_show_usage(); |
290 | func = rpm_query; |
291 | break; |
292 | case 'p': /* Query a package */ |
293 | func |= rpm_query_package; |
294 | break; |
295 | case 'l': /* List files in a package */ |
296 | func |= rpm_query_list; |
297 | break; |
298 | case 'd': /* List doc files in a package (implies list) */ |
299 | func |= rpm_query_list; |
300 | func |= rpm_query_list_doc; |
301 | break; |
302 | case 'c': /* List config files in a package (implies list) */ |
303 | func |= rpm_query_list; |
304 | func |= rpm_query_list_config; |
305 | break; |
306 | default: |
307 | bb_show_usage(); |
308 | } |
309 | } |
310 | argv += optind; |
311 | //argc -= optind; |
312 | if (!argv[0]) { |
313 | bb_show_usage(); |
314 | } |
315 | |
316 | while (*argv) { |
317 | int rpm_fd; |
318 | unsigned mapsize; |
319 | const char *source_rpm; |
320 | |
321 | rpm_fd = xopen(*argv++, O_RDONLY); |
322 | G.mytags = rpm_gettags(rpm_fd, &G.tagcount); |
323 | if (!G.mytags) |
324 | bb_error_msg_and_die("error reading rpm header"); |
325 | mapsize = xlseek(rpm_fd, 0, SEEK_CUR); |
326 | mapsize = (mapsize + pagesize) & -(int)pagesize; |
327 | /* Some NOMMU systems prefer MAP_PRIVATE over MAP_SHARED */ |
328 | G.map = mmap(0, mapsize, PROT_READ, MAP_PRIVATE, rpm_fd, 0); |
329 | //FIXME: error check? |
330 | |
331 | source_rpm = rpm_getstr(TAG_SOURCERPM, 0); |
332 | |
333 | if (func & rpm_install) { |
334 | /* Backup any config files */ |
335 | loop_through_files(TAG_BASENAMES, fileaction_dobackup); |
336 | /* Extact the archive */ |
337 | extract_cpio(rpm_fd, source_rpm); |
338 | /* Set the correct file uid/gid's */ |
339 | loop_through_files(TAG_BASENAMES, fileaction_setowngrp); |
340 | } |
341 | else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) { |
342 | if (!(func & (rpm_query_info|rpm_query_list))) { |
343 | /* If just a straight query, just give package name */ |
344 | printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0)); |
345 | } |
346 | if (func & rpm_query_info) { |
347 | /* Do the nice printout */ |
348 | time_t bdate_time; |
349 | struct tm *bdate_ptm; |
350 | char bdatestring[50]; |
351 | const char *p; |
352 | |
353 | printf("%-12s: %s\n", "Name" , rpm_getstr(TAG_NAME, 0)); |
354 | /* TODO compat: add "Epoch" here */ |
355 | printf("%-12s: %s\n", "Version" , rpm_getstr(TAG_VERSION, 0)); |
356 | printf("%-12s: %s\n", "Release" , rpm_getstr(TAG_RELEASE, 0)); |
357 | /* add "Architecture" */ |
358 | printf("%-12s: %s\n", "Install Date", "(not installed)"); |
359 | printf("%-12s: %s\n", "Group" , rpm_getstr(TAG_GROUP, 0)); |
360 | printf("%-12s: %d\n", "Size" , rpm_getint(TAG_SIZE, 0)); |
361 | printf("%-12s: %s\n", "License" , rpm_getstr(TAG_LICENSE, 0)); |
362 | /* add "Signature" */ |
363 | printf("%-12s: %s\n", "Source RPM" , source_rpm ? source_rpm : "(none)"); |
364 | bdate_time = rpm_getint(TAG_BUILDTIME, 0); |
365 | bdate_ptm = localtime(&bdate_time); |
366 | strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm); |
367 | printf("%-12s: %s\n", "Build Date" , bdatestring); |
368 | printf("%-12s: %s\n", "Build Host" , rpm_getstr(TAG_BUILDHOST, 0)); |
369 | p = rpm_getstr(TAG_PREFIXS, 0); |
370 | printf("%-12s: %s\n", "Relocations" , p ? p : "(not relocatable)"); |
371 | /* add "Packager" */ |
372 | p = rpm_getstr(TAG_VENDOR, 0); |
373 | printf("%-12s: %s\n", "Vendor" , p ? p : "(none)"); |
374 | printf("%-12s: %s\n", "URL" , rpm_getstr(TAG_URL, 0)); |
375 | printf("%-12s: %s\n", "Summary" , rpm_getstr(TAG_SUMMARY, 0)); |
376 | printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0)); |
377 | } |
378 | if (func & rpm_query_list) { |
379 | int count, it, flags; |
380 | count = rpm_getcount(TAG_BASENAMES); |
381 | for (it = 0; it < count; it++) { |
382 | flags = rpm_getint(TAG_FILEFLAGS, it); |
383 | switch (func & (rpm_query_list_doc|rpm_query_list_config)) { |
384 | case rpm_query_list_doc: |
385 | if (!(flags & RPMFILE_DOC)) continue; |
386 | break; |
387 | case rpm_query_list_config: |
388 | if (!(flags & RPMFILE_CONFIG)) continue; |
389 | break; |
390 | case rpm_query_list_doc|rpm_query_list_config: |
391 | if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue; |
392 | break; |
393 | } |
394 | printf("%s%s\n", |
395 | rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)), |
396 | rpm_getstr(TAG_BASENAMES, it)); |
397 | } |
398 | } |
399 | } |
400 | munmap(G.map, mapsize); |
401 | free(G.mytags); |
402 | close(rpm_fd); |
403 | } |
404 | return 0; |
405 | } |
406 |