source: MondoRescue/branches/2.2.9/mindi-busybox/archival/rpm.c@ 2142

Last change on this file since 2142 was 1765, checked in by Bruno Cornec, 16 years ago

Update to busybox 1.7.2
File size: 12.8 KB
Line 
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 tarball for details.
8 */
9
10#include "libbb.h"
11#include "unarchive.h"
12
13#define RPM_HEADER_MAGIC "\216\255\350"
14#define RPM_CHAR_TYPE 1
15#define RPM_INT8_TYPE 2
16#define RPM_INT16_TYPE 3
17#define RPM_INT32_TYPE 4
18/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
19#define RPM_STRING_TYPE 6
20#define RPM_BIN_TYPE 7
21#define RPM_STRING_ARRAY_TYPE 8
22#define RPM_I18NSTRING_TYPE 9
23
24#define TAG_NAME 1000
25#define TAG_VERSION 1001
26#define TAG_RELEASE 1002
27#define TAG_SUMMARY 1004
28#define TAG_DESCRIPTION 1005
29#define TAG_BUILDTIME 1006
30#define TAG_BUILDHOST 1007
31#define TAG_SIZE 1009
32#define TAG_VENDOR 1011
33#define TAG_LICENSE 1014
34#define TAG_PACKAGER 1015
35#define TAG_GROUP 1016
36#define TAG_URL 1020
37#define TAG_PREIN 1023
38#define TAG_POSTIN 1024
39#define TAG_FILEFLAGS 1037
40#define TAG_FILEUSERNAME 1039
41#define TAG_FILEGROUPNAME 1040
42#define TAG_SOURCERPM 1044
43#define TAG_PREINPROG 1085
44#define TAG_POSTINPROG 1086
45#define TAG_PREFIXS 1098
46#define TAG_DIRINDEXES 1116
47#define TAG_BASENAMES 1117
48#define TAG_DIRNAMES 1118
49#define RPMFILE_CONFIG (1 << 0)
50#define RPMFILE_DOC (1 << 1)
51
52enum rpm_functions_e {
53 rpm_query = 1,
54 rpm_install = 2,
55 rpm_query_info = 4,
56 rpm_query_package = 8,
57 rpm_query_list = 16,
58 rpm_query_list_doc = 32,
59 rpm_query_list_config = 64
60};
61
62typedef struct {
63 uint32_t tag; /* 4 byte tag */
64 uint32_t type; /* 4 byte type */
65 uint32_t offset; /* 4 byte offset */
66 uint32_t count; /* 4 byte count */
67} rpm_index;
68
69static void *map;
70static rpm_index **mytags;
71static int tagcount;
72
73static void extract_cpio_gz(int fd);
74static rpm_index **rpm_gettags(int fd, int *num_tags);
75static int bsearch_rpmtag(const void *key, const void *item);
76static char *rpm_getstr(int tag, int itemindex);
77static int rpm_getint(int tag, int itemindex);
78static int rpm_getcount(int tag);
79static void fileaction_dobackup(char *filename, int fileref);
80static void fileaction_setowngrp(char *filename, int fileref);
81static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));
82
83int rpm_main(int argc, char **argv);
84int rpm_main(int argc, char **argv)
85{
86 int opt = 0, func = 0, rpm_fd, offset;
87 const int pagesize = getpagesize();
88
89 while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
90 switch (opt) {
91 case 'i': /* First arg: Install mode, with q: Information */
92 if (!func) func = rpm_install;
93 else func |= rpm_query_info;
94 break;
95 case 'q': /* First arg: Query mode */
96 if (func) bb_show_usage();
97 func = rpm_query;
98 break;
99 case 'p': /* Query a package */
100 func |= rpm_query_package;
101 break;
102 case 'l': /* List files in a package */
103 func |= rpm_query_list;
104 break;
105 case 'd': /* List doc files in a package (implies list) */
106 func |= rpm_query_list;
107 func |= rpm_query_list_doc;
108 break;
109 case 'c': /* List config files in a package (implies list) */
110 func |= rpm_query_list;
111 func |= rpm_query_list_config;
112 break;
113 default:
114 bb_show_usage();
115 }
116 }
117 argv += optind;
118 argc -= optind;
119 if (!argc) bb_show_usage();
120
121 while (*argv) {
122 rpm_fd = xopen(*argv++, O_RDONLY);
123 mytags = rpm_gettags(rpm_fd, &tagcount);
124 if (!mytags)
125 bb_error_msg_and_die("error reading rpm header");
126 offset = xlseek(rpm_fd, 0, SEEK_CUR);
127 /* Mimimum is one page */
128 map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
129
130 if (func & rpm_install) {
131 /* Backup any config files */
132 loop_through_files(TAG_BASENAMES, fileaction_dobackup);
133 /* Extact the archive */
134 extract_cpio_gz(rpm_fd);
135 /* Set the correct file uid/gid's */
136 loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
137 }
138 else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
139 if (!(func & (rpm_query_info|rpm_query_list))) {
140 /* If just a straight query, just give package name */
141 printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
142 }
143 if (func & rpm_query_info) {
144 /* Do the nice printout */
145 time_t bdate_time;
146 struct tm *bdate;
147 char bdatestring[50];
148 printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_PREFIXS, 0) ? rpm_getstr(TAG_PREFIXS, 0) : "(not relocateable)");
149 printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_VENDOR, 0) ? rpm_getstr(TAG_VENDOR, 0) : "(none)");
150 bdate_time = rpm_getint(TAG_BUILDTIME, 0);
151 bdate = localtime((time_t *) &bdate_time);
152 strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate);
153 printf("Release : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring);
154 printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0));
155 printf("Group : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), rpm_getstr(TAG_SOURCERPM, 0));
156 printf("Size : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0));
157 printf("URL : %s\n", rpm_getstr(TAG_URL, 0));
158 printf("Summary : %s\n", rpm_getstr(TAG_SUMMARY, 0));
159 printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
160 }
161 if (func & rpm_query_list) {
162 int count, it, flags;
163 count = rpm_getcount(TAG_BASENAMES);
164 for (it = 0; it < count; it++) {
165 flags = rpm_getint(TAG_FILEFLAGS, it);
166 switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
167 case rpm_query_list_doc:
168 if (!(flags & RPMFILE_DOC)) continue;
169 break;
170 case rpm_query_list_config:
171 if (!(flags & RPMFILE_CONFIG)) continue;
172 break;
173 case rpm_query_list_doc|rpm_query_list_config:
174 if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
175 break;
176 }
177 printf("%s%s\n",
178 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
179 rpm_getstr(TAG_BASENAMES, it));
180 }
181 }
182 }
183 free(mytags);
184 }
185 return 0;
186}
187
188static void extract_cpio_gz(int fd)
189{
190 archive_handle_t *archive_handle;
191 unsigned char magic[2];
192#if BB_MMU
193 USE_DESKTOP(long long) int (*xformer)(int src_fd, int dst_fd);
194 enum { xformer_prog = 0 };
195#else
196 enum { xformer = 0 };
197 const char *xformer_prog;
198#endif
199
200 /* Initialize */
201 archive_handle = init_handle();
202 archive_handle->seek = seek_by_read;
203 //archive_handle->action_header = header_list;
204 archive_handle->action_data = data_extract_all;
205 archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
206 archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
207 archive_handle->src_fd = fd;
208 archive_handle->offset = 0;
209
210 xread(archive_handle->src_fd, &magic, 2);
211#if BB_MMU
212 xformer = unpack_gz_stream;
213#else
214 xformer_prog = "gunzip";
215#endif
216 if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
217 if (ENABLE_FEATURE_RPM_BZ2
218 && (magic[0] == 0x42) && (magic[1] == 0x5a)) {
219#if BB_MMU
220 xformer = unpack_bz2_stream;
221#else
222 xformer_prog = "bunzip2";
223#endif
224 /* We can do better, need modifying unpack_bz2_stream to not require
225 * first 2 bytes. Not very hard to do... I mean, TODO :) */
226 xlseek(archive_handle->src_fd, -2, SEEK_CUR);
227 } else
228 bb_error_msg_and_die("no gzip"
229 USE_FEATURE_RPM_BZ2("/bzip")
230 " magic");
231 } else {
232 check_header_gzip_or_die(archive_handle->src_fd);
233#if !BB_MMU
234 /* NOMMU version of open_transformer execs an external unzipper that should
235 * have the file position at the start of the file */
236 xlseek(archive_handle->src_fd, 0, SEEK_SET);
237#endif
238 }
239
240 xchdir("/"); /* Install RPM's to root */
241 archive_handle->src_fd = open_transformer(archive_handle->src_fd, xformer, xformer_prog, xformer_prog, "-cf", "-", NULL);
242 archive_handle->offset = 0;
243 while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
244 continue;
245}
246
247
248static rpm_index **rpm_gettags(int fd, int *num_tags)
249{
250 /* We should never need mode than 200, and realloc later */
251 rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *));
252 int pass, tagindex = 0;
253
254 xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
255
256 /* 1st pass is the signature headers, 2nd is the main stuff */
257 for (pass = 0; pass < 2; pass++) {
258 struct {
259 char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
260 uint8_t version; /* 1 byte version number */
261 uint32_t reserved; /* 4 bytes reserved */
262 uint32_t entries; /* Number of entries in header (4 bytes) */
263 uint32_t size; /* Size of store (4 bytes) */
264 } header;
265 rpm_index *tmpindex;
266 int storepos;
267
268 xread(fd, &header, sizeof(header));
269 if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0)
270 return NULL; /* Invalid magic */
271 if (header.version != 1)
272 return NULL; /* This program only supports v1 headers */
273 header.size = ntohl(header.size);
274 header.entries = ntohl(header.entries);
275 storepos = xlseek(fd,0,SEEK_CUR) + header.entries * 16;
276
277 while (header.entries--) {
278 tmpindex = tags[tagindex++] = xmalloc(sizeof(rpm_index));
279 xread(fd, tmpindex, sizeof(rpm_index));
280 tmpindex->tag = ntohl(tmpindex->tag);
281 tmpindex->type = ntohl(tmpindex->type);
282 tmpindex->count = ntohl(tmpindex->count);
283 tmpindex->offset = storepos + ntohl(tmpindex->offset);
284 if (pass==0)
285 tmpindex->tag -= 743;
286 }
287 xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
288 /* Skip padding to 8 byte boundary after reading signature headers */
289 if (pass==0)
290 xlseek(fd, (8 - (xlseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR);
291 }
292 tags = xrealloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */
293 *num_tags = tagindex;
294 return tags; /* All done, leave the file at the start of the gzipped cpio archive */
295}
296
297static int bsearch_rpmtag(const void *key, const void *item)
298{
299 int *tag = (int *)key;
300 rpm_index **tmp = (rpm_index **) item;
301 return (*tag - tmp[0]->tag);
302}
303
304static int rpm_getcount(int tag)
305{
306 rpm_index **found;
307 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
308 if (!found)
309 return 0;
310 return found[0]->count;
311}
312
313static char *rpm_getstr(int tag, int itemindex)
314{
315 rpm_index **found;
316 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
317 if (!found || itemindex >= found[0]->count)
318 return NULL;
319 if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) {
320 int n;
321 char *tmpstr = (char *) (map + found[0]->offset);
322 for (n=0; n < itemindex; n++)
323 tmpstr = tmpstr + strlen(tmpstr) + 1;
324 return tmpstr;
325 }
326 return NULL;
327}
328
329static int rpm_getint(int tag, int itemindex)
330{
331 rpm_index **found;
332 int *tmpint; /* NB: using int8_t* would be easier to code */
333
334 /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
335 * it's ok to ignore it because tag won't be used as a pointer */
336 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
337 if (!found || itemindex >= found[0]->count)
338 return -1;
339
340 tmpint = (int *) (map + found[0]->offset);
341
342 if (found[0]->type == RPM_INT32_TYPE) {
343 tmpint = (int *) ((char *) tmpint + itemindex*4);
344 /*return ntohl(*tmpint);*/
345 /* int can be != int32_t */
346 return ntohl(*(int32_t*)tmpint);
347 }
348 if (found[0]->type == RPM_INT16_TYPE) {
349 tmpint = (int *) ((char *) tmpint + itemindex*2);
350 /* ??? read int, and THEN ntohs() it?? */
351 /*return ntohs(*tmpint);*/
352 return ntohs(*(int16_t*)tmpint);
353 }
354 if (found[0]->type == RPM_INT8_TYPE) {
355 tmpint = (int *) ((char *) tmpint + itemindex);
356 /* ??? why we don't read byte here??? */
357 /*return ntohs(*tmpint);*/
358 return *(int8_t*)tmpint;
359 }
360 return -1;
361}
362
363static void fileaction_dobackup(char *filename, int fileref)
364{
365 struct stat oldfile;
366 int stat_res;
367 char *newname;
368 if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
369 /* Only need to backup config files */
370 stat_res = lstat(filename, &oldfile);
371 if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
372 /* File already exists - really should check MD5's etc to see if different */
373 newname = xasprintf("%s.rpmorig", filename);
374 copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
375 remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
376 free(newname);
377 }
378 }
379}
380
381static void fileaction_setowngrp(char *filename, int fileref)
382{
383 int uid, gid;
384 uid = xuname2uid(rpm_getstr(TAG_FILEUSERNAME, fileref));
385 gid = xgroup2gid(rpm_getstr(TAG_FILEGROUPNAME, fileref));
386 chown(filename, uid, gid);
387}
388
389static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
390{
391 int count = 0;
392 while (rpm_getstr(filetag, count)) {
393 char* filename = xasprintf("%s%s",
394 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
395 rpm_getstr(TAG_BASENAMES, count));
396 fileaction(filename, count++);
397 free(filename);
398 }
399}
Note: See TracBrowser for help on using the repository browser.