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path: root/archival/rpm.c (plain)
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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 "bb_archive.h"
33#include "rpm.h"
34
35#define RPM_CHAR_TYPE 1
36#define RPM_INT8_TYPE 2
37#define RPM_INT16_TYPE 3
38#define RPM_INT32_TYPE 4
39/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
40#define RPM_STRING_TYPE 6
41#define RPM_BIN_TYPE 7
42#define RPM_STRING_ARRAY_TYPE 8
43#define RPM_I18NSTRING_TYPE 9
44
45#define TAG_NAME 1000
46#define TAG_VERSION 1001
47#define TAG_RELEASE 1002
48#define TAG_SUMMARY 1004
49#define TAG_DESCRIPTION 1005
50#define TAG_BUILDTIME 1006
51#define TAG_BUILDHOST 1007
52#define TAG_SIZE 1009
53#define TAG_VENDOR 1011
54#define TAG_LICENSE 1014
55#define TAG_PACKAGER 1015
56#define TAG_GROUP 1016
57#define TAG_URL 1020
58#define TAG_PREIN 1023
59#define TAG_POSTIN 1024
60#define TAG_FILEFLAGS 1037
61#define TAG_FILEUSERNAME 1039
62#define TAG_FILEGROUPNAME 1040
63#define TAG_SOURCERPM 1044
64#define TAG_PREINPROG 1085
65#define TAG_POSTINPROG 1086
66#define TAG_PREFIXS 1098
67#define TAG_DIRINDEXES 1116
68#define TAG_BASENAMES 1117
69#define TAG_DIRNAMES 1118
70
71#define RPMFILE_CONFIG (1 << 0)
72#define RPMFILE_DOC (1 << 1)
73
74enum rpm_functions_e {
75 rpm_query = 1,
76 rpm_install = 2,
77 rpm_query_info = 4,
78 rpm_query_package = 8,
79 rpm_query_list = 16,
80 rpm_query_list_doc = 32,
81 rpm_query_list_config = 64
82};
83
84typedef struct {
85 uint32_t tag; /* 4 byte tag */
86 uint32_t type; /* 4 byte type */
87 uint32_t offset; /* 4 byte offset */
88 uint32_t count; /* 4 byte count */
89} rpm_index;
90
91struct globals {
92 void *map;
93 rpm_index **mytags;
94 int tagcount;
95} FIX_ALIASING;
96#define G (*(struct globals*)&bb_common_bufsiz1)
97#define INIT_G() do { } while (0)
98
99static void extract_cpio(int fd, const char *source_rpm)
100{
101 archive_handle_t *archive_handle;
102
103 if (source_rpm != NULL) {
104 /* Binary rpm (it was built from some SRPM), install to root */
105 xchdir("/");
106 } /* else: SRPM, install to current dir */
107
108 /* Initialize */
109 archive_handle = init_handle();
110 archive_handle->seek = seek_by_read;
111 archive_handle->action_data = data_extract_all;
112#if 0 /* For testing (rpm -i only lists the files in internal cpio): */
113 archive_handle->action_header = header_list;
114 archive_handle->action_data = data_skip;
115#endif
116 archive_handle->ah_flags = ARCHIVE_RESTORE_DATE | ARCHIVE_CREATE_LEADING_DIRS
117 /* compat: overwrite existing files.
118 * try "rpm -i foo.src.rpm" few times in a row -
119 * standard rpm will not complain.
120 */
121 | ARCHIVE_REPLACE_VIA_RENAME;
122 archive_handle->src_fd = fd;
123 /*archive_handle->offset = 0; - init_handle() did it */
124
125 setup_unzip_on_fd(archive_handle->src_fd, /*fail_if_not_compressed:*/ 1);
126 while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
127 continue;
128}
129
130static rpm_index **rpm_gettags(int fd, int *num_tags)
131{
132 /* We should never need more than 200 (shrink via realloc later) */
133 rpm_index **tags = xzalloc(200 * sizeof(tags[0]));
134 int pass, tagindex = 0;
135
136 xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
137
138 /* 1st pass is the signature headers, 2nd is the main stuff */
139 for (pass = 0; pass < 2; pass++) {
140 struct rpm_header header;
141 rpm_index *tmpindex;
142 int storepos;
143
144 xread(fd, &header, sizeof(header));
145 if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER))
146 return NULL; /* Invalid magic, or not version 1 */
147 header.size = ntohl(header.size);
148 header.entries = ntohl(header.entries);
149 storepos = xlseek(fd, 0, SEEK_CUR) + header.entries * 16;
150
151 while (header.entries--) {
152 tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex));
153 xread(fd, tmpindex, sizeof(*tmpindex));
154 tmpindex->tag = ntohl(tmpindex->tag);
155 tmpindex->type = ntohl(tmpindex->type);
156 tmpindex->count = ntohl(tmpindex->count);
157 tmpindex->offset = storepos + ntohl(tmpindex->offset);
158 if (pass == 0)
159 tmpindex->tag -= 743;
160 }
161 storepos = xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
162 /* Skip padding to 8 byte boundary after reading signature headers */
163 if (pass == 0)
164 xlseek(fd, (-storepos) & 0x7, SEEK_CUR);
165 }
166 /* realloc tags to save space */
167 tags = xrealloc(tags, tagindex * sizeof(tags[0]));
168 *num_tags = tagindex;
169 /* All done, leave the file at the start of the gzipped cpio archive */
170 return tags;
171}
172
173static int bsearch_rpmtag(const void *key, const void *item)
174{
175 int *tag = (int *)key;
176 rpm_index **tmp = (rpm_index **) item;
177 return (*tag - tmp[0]->tag);
178}
179
180static int rpm_getcount(int tag)
181{
182 rpm_index **found;
183 found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
184 if (!found)
185 return 0;
186 return found[0]->count;
187}
188
189static char *rpm_getstr(int tag, int itemindex)
190{
191 rpm_index **found;
192 found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
193 if (!found || itemindex >= found[0]->count)
194 return NULL;
195 if (found[0]->type == RPM_STRING_TYPE
196 || found[0]->type == RPM_I18NSTRING_TYPE
197 || found[0]->type == RPM_STRING_ARRAY_TYPE
198 ) {
199 int n;
200 char *tmpstr = (char *) G.map + found[0]->offset;
201 for (n = 0; n < itemindex; n++)
202 tmpstr = tmpstr + strlen(tmpstr) + 1;
203 return tmpstr;
204 }
205 return NULL;
206}
207
208static int rpm_getint(int tag, int itemindex)
209{
210 rpm_index **found;
211 char *tmpint;
212
213 /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
214 * it's ok to ignore it because tag won't be used as a pointer */
215 found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
216 if (!found || itemindex >= found[0]->count)
217 return -1;
218
219 tmpint = (char *) G.map + found[0]->offset;
220 if (found[0]->type == RPM_INT32_TYPE) {
221 tmpint += itemindex*4;
222 return ntohl(*(int32_t*)tmpint);
223 }
224 if (found[0]->type == RPM_INT16_TYPE) {
225 tmpint += itemindex*2;
226 return ntohs(*(int16_t*)tmpint);
227 }
228 if (found[0]->type == RPM_INT8_TYPE) {
229 tmpint += itemindex;
230 return *(int8_t*)tmpint;
231 }
232 return -1;
233}
234
235static void fileaction_dobackup(char *filename, int fileref)
236{
237 struct stat oldfile;
238 int stat_res;
239 char *newname;
240 if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
241 /* Only need to backup config files */
242 stat_res = lstat(filename, &oldfile);
243 if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
244 /* File already exists - really should check MD5's etc to see if different */
245 newname = xasprintf("%s.rpmorig", filename);
246 copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
247 remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
248 free(newname);
249 }
250 }
251}
252
253static void fileaction_setowngrp(char *filename, int fileref)
254{
255 /* real rpm warns: "user foo does not exist - using <you>" */
256 struct passwd *pw = getpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref));
257 int uid = pw ? pw->pw_uid : getuid(); /* or euid? */
258 struct group *gr = getgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref));
259 int gid = gr ? gr->gr_gid : getgid();
260 chown(filename, uid, gid);
261}
262
263static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
264{
265 int count = 0;
266 while (rpm_getstr(filetag, count)) {
267 char* filename = xasprintf("%s%s",
268 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
269 rpm_getstr(TAG_BASENAMES, count));
270 fileaction(filename, count++);
271 free(filename);
272 }
273}
274
275int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
276int rpm_main(int argc, char **argv)
277{
278 int opt, func = 0;
279 const unsigned pagesize = getpagesize();
280
281 while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
282 switch (opt) {
283 case 'i': /* First arg: Install mode, with q: Information */
284 if (!func) func = rpm_install;
285 else func |= rpm_query_info;
286 break;
287 case 'q': /* First arg: Query mode */
288 if (func) bb_show_usage();
289 func = rpm_query;
290 break;
291 case 'p': /* Query a package */
292 func |= rpm_query_package;
293 break;
294 case 'l': /* List files in a package */
295 func |= rpm_query_list;
296 break;
297 case 'd': /* List doc files in a package (implies list) */
298 func |= rpm_query_list;
299 func |= rpm_query_list_doc;
300 break;
301 case 'c': /* List config files in a package (implies list) */
302 func |= rpm_query_list;
303 func |= rpm_query_list_config;
304 break;
305 default:
306 bb_show_usage();
307 }
308 }
309 argv += optind;
310 //argc -= optind;
311 if (!argv[0]) {
312 bb_show_usage();
313 }
314
315 while (*argv) {
316 int rpm_fd;
317 unsigned mapsize;
318 const char *source_rpm;
319
320 rpm_fd = xopen(*argv++, O_RDONLY);
321 G.mytags = rpm_gettags(rpm_fd, &G.tagcount);
322 if (!G.mytags)
323 bb_error_msg_and_die("error reading rpm header");
324 mapsize = xlseek(rpm_fd, 0, SEEK_CUR);
325 mapsize = (mapsize + pagesize) & -(int)pagesize;
326 /* Some NOMMU systems prefer MAP_PRIVATE over MAP_SHARED */
327 G.map = mmap(0, mapsize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
328//FIXME: error check?
329
330 source_rpm = rpm_getstr(TAG_SOURCERPM, 0);
331
332 if (func & rpm_install) {
333 /* Backup any config files */
334 loop_through_files(TAG_BASENAMES, fileaction_dobackup);
335 /* Extact the archive */
336 extract_cpio(rpm_fd, source_rpm);
337 /* Set the correct file uid/gid's */
338 loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
339 }
340 else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
341 if (!(func & (rpm_query_info|rpm_query_list))) {
342 /* If just a straight query, just give package name */
343 printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
344 }
345 if (func & rpm_query_info) {
346 /* Do the nice printout */
347 time_t bdate_time;
348 struct tm *bdate_ptm;
349 char bdatestring[50];
350 const char *p;
351
352 printf("%-12s: %s\n", "Name" , rpm_getstr(TAG_NAME, 0));
353 /* TODO compat: add "Epoch" here */
354 printf("%-12s: %s\n", "Version" , rpm_getstr(TAG_VERSION, 0));
355 printf("%-12s: %s\n", "Release" , rpm_getstr(TAG_RELEASE, 0));
356 /* add "Architecture" */
357 printf("%-12s: %s\n", "Install Date", "(not installed)");
358 printf("%-12s: %s\n", "Group" , rpm_getstr(TAG_GROUP, 0));
359 printf("%-12s: %d\n", "Size" , rpm_getint(TAG_SIZE, 0));
360 printf("%-12s: %s\n", "License" , rpm_getstr(TAG_LICENSE, 0));
361 /* add "Signature" */
362 printf("%-12s: %s\n", "Source RPM" , source_rpm ? source_rpm : "(none)");
363 bdate_time = rpm_getint(TAG_BUILDTIME, 0);
364 bdate_ptm = localtime(&bdate_time);
365 strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
366 printf("%-12s: %s\n", "Build Date" , bdatestring);
367 printf("%-12s: %s\n", "Build Host" , rpm_getstr(TAG_BUILDHOST, 0));
368 p = rpm_getstr(TAG_PREFIXS, 0);
369 printf("%-12s: %s\n", "Relocations" , p ? p : "(not relocatable)");
370 /* add "Packager" */
371 p = rpm_getstr(TAG_VENDOR, 0);
372 printf("%-12s: %s\n", "Vendor" , p ? p : "(none)");
373 printf("%-12s: %s\n", "URL" , rpm_getstr(TAG_URL, 0));
374 printf("%-12s: %s\n", "Summary" , rpm_getstr(TAG_SUMMARY, 0));
375 printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
376 }
377 if (func & rpm_query_list) {
378 int count, it, flags;
379 count = rpm_getcount(TAG_BASENAMES);
380 for (it = 0; it < count; it++) {
381 flags = rpm_getint(TAG_FILEFLAGS, it);
382 switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
383 case rpm_query_list_doc:
384 if (!(flags & RPMFILE_DOC)) continue;
385 break;
386 case rpm_query_list_config:
387 if (!(flags & RPMFILE_CONFIG)) continue;
388 break;
389 case rpm_query_list_doc|rpm_query_list_config:
390 if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
391 break;
392 }
393 printf("%s%s\n",
394 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
395 rpm_getstr(TAG_BASENAMES, it));
396 }
397 }
398 }
399 munmap(G.map, mapsize);
400 free(G.mytags);
401 close(rpm_fd);
402 }
403 return 0;
404}
405
generated by cgit at 2024-05-15 05:58:32 (GMT)