source: MondoRescue/branches/3.2/mindi-busybox/archival/rpm.c@ 3232

Last change on this file since 3232 was 3232, checked in by Bruno Cornec, 10 years ago
  • Update mindi-busybox to 1.21.1
File size: 12.5 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 source tree.
8 */
9
10//usage:#define rpm_trivial_usage
11//usage: "-i PACKAGE.rpm; rpm -qp[ildc] PACKAGE.rpm"
12//usage:#define rpm_full_usage "\n\n"
13//usage: "Manipulate RPM packages\n"
14//usage: "\nCommands:"
15//usage: "\n -i Install package"
16//usage: "\n -qp Query package"
17//usage: "\n -i Show information"
18//usage: "\n -l List contents"
19//usage: "\n -d List documents"
20//usage: "\n -c List config files"
21
22#include "libbb.h"
23#include "bb_archive.h"
24#include "rpm.h"
25
26#define RPM_CHAR_TYPE 1
27#define RPM_INT8_TYPE 2
28#define RPM_INT16_TYPE 3
29#define RPM_INT32_TYPE 4
30/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
31#define RPM_STRING_TYPE 6
32#define RPM_BIN_TYPE 7
33#define RPM_STRING_ARRAY_TYPE 8
34#define RPM_I18NSTRING_TYPE 9
35
36#define TAG_NAME 1000
37#define TAG_VERSION 1001
38#define TAG_RELEASE 1002
39#define TAG_SUMMARY 1004
40#define TAG_DESCRIPTION 1005
41#define TAG_BUILDTIME 1006
42#define TAG_BUILDHOST 1007
43#define TAG_SIZE 1009
44#define TAG_VENDOR 1011
45#define TAG_LICENSE 1014
46#define TAG_PACKAGER 1015
47#define TAG_GROUP 1016
48#define TAG_URL 1020
49#define TAG_PREIN 1023
50#define TAG_POSTIN 1024
51#define TAG_FILEFLAGS 1037
52#define TAG_FILEUSERNAME 1039
53#define TAG_FILEGROUPNAME 1040
54#define TAG_SOURCERPM 1044
55#define TAG_PREINPROG 1085
56#define TAG_POSTINPROG 1086
57#define TAG_PREFIXS 1098
58#define TAG_DIRINDEXES 1116
59#define TAG_BASENAMES 1117
60#define TAG_DIRNAMES 1118
61
62#define RPMFILE_CONFIG (1 << 0)
63#define RPMFILE_DOC (1 << 1)
64
65enum rpm_functions_e {
66 rpm_query = 1,
67 rpm_install = 2,
68 rpm_query_info = 4,
69 rpm_query_package = 8,
70 rpm_query_list = 16,
71 rpm_query_list_doc = 32,
72 rpm_query_list_config = 64
73};
74
75typedef struct {
76 uint32_t tag; /* 4 byte tag */
77 uint32_t type; /* 4 byte type */
78 uint32_t offset; /* 4 byte offset */
79 uint32_t count; /* 4 byte count */
80} rpm_index;
81
82static void *map;
83static rpm_index **mytags;
84static int tagcount;
85
86static void extract_cpio(int fd, const char *source_rpm);
87static rpm_index **rpm_gettags(int fd, int *num_tags);
88static int bsearch_rpmtag(const void *key, const void *item);
89static char *rpm_getstr(int tag, int itemindex);
90static int rpm_getint(int tag, int itemindex);
91static int rpm_getcount(int tag);
92static void fileaction_dobackup(char *filename, int fileref);
93static void fileaction_setowngrp(char *filename, int fileref);
94static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));
95
96int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
97int rpm_main(int argc, char **argv)
98{
99 int opt = 0, func = 0, rpm_fd, offset;
100 const int pagesize = getpagesize();
101
102 while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
103 switch (opt) {
104 case 'i': /* First arg: Install mode, with q: Information */
105 if (!func) func = rpm_install;
106 else func |= rpm_query_info;
107 break;
108 case 'q': /* First arg: Query mode */
109 if (func) bb_show_usage();
110 func = rpm_query;
111 break;
112 case 'p': /* Query a package */
113 func |= rpm_query_package;
114 break;
115 case 'l': /* List files in a package */
116 func |= rpm_query_list;
117 break;
118 case 'd': /* List doc files in a package (implies list) */
119 func |= rpm_query_list;
120 func |= rpm_query_list_doc;
121 break;
122 case 'c': /* List config files in a package (implies list) */
123 func |= rpm_query_list;
124 func |= rpm_query_list_config;
125 break;
126 default:
127 bb_show_usage();
128 }
129 }
130 argv += optind;
131 //argc -= optind;
132 if (!argv[0]) {
133 bb_show_usage();
134 }
135
136 while (*argv) {
137 const char *source_rpm;
138
139 rpm_fd = xopen(*argv++, O_RDONLY);
140 mytags = rpm_gettags(rpm_fd, &tagcount);
141 if (!mytags)
142 bb_error_msg_and_die("error reading rpm header");
143 offset = xlseek(rpm_fd, 0, SEEK_CUR);
144 /* Mimimum is one page */
145 map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
146
147 source_rpm = rpm_getstr(TAG_SOURCERPM, 0);
148
149 if (func & rpm_install) {
150 /* Backup any config files */
151 loop_through_files(TAG_BASENAMES, fileaction_dobackup);
152 /* Extact the archive */
153 extract_cpio(rpm_fd, source_rpm);
154 /* Set the correct file uid/gid's */
155 loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
156 }
157 else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
158 if (!(func & (rpm_query_info|rpm_query_list))) {
159 /* If just a straight query, just give package name */
160 printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
161 }
162 if (func & rpm_query_info) {
163 /* Do the nice printout */
164 time_t bdate_time;
165 struct tm *bdate_ptm;
166 char bdatestring[50];
167 const char *p;
168
169 p = rpm_getstr(TAG_PREFIXS, 0);
170 if (!p) p = "(not relocateable)";
171 printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), p);
172 p = rpm_getstr(TAG_VENDOR, 0);
173 if (!p) p = "(none)";
174 printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), p);
175 bdate_time = rpm_getint(TAG_BUILDTIME, 0);
176 bdate_ptm = localtime(&bdate_time);
177 strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
178 printf("Release : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring);
179 printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0));
180 printf("Group : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), source_rpm);
181 printf("Size : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0));
182 printf("URL : %s\n", rpm_getstr(TAG_URL, 0));
183 printf("Summary : %s\n", rpm_getstr(TAG_SUMMARY, 0));
184 printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
185 }
186 if (func & rpm_query_list) {
187 int count, it, flags;
188 count = rpm_getcount(TAG_BASENAMES);
189 for (it = 0; it < count; it++) {
190 flags = rpm_getint(TAG_FILEFLAGS, it);
191 switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
192 case rpm_query_list_doc:
193 if (!(flags & RPMFILE_DOC)) continue;
194 break;
195 case rpm_query_list_config:
196 if (!(flags & RPMFILE_CONFIG)) continue;
197 break;
198 case rpm_query_list_doc|rpm_query_list_config:
199 if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
200 break;
201 }
202 printf("%s%s\n",
203 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
204 rpm_getstr(TAG_BASENAMES, it));
205 }
206 }
207 }
208 free(mytags);
209 }
210 return 0;
211}
212
213static void extract_cpio(int fd, const char *source_rpm)
214{
215 archive_handle_t *archive_handle;
216
217 if (source_rpm != NULL) {
218 /* Binary rpm (it was built from some SRPM), install to root */
219 xchdir("/");
220 } /* else: SRPM, install to current dir */
221
222 /* Initialize */
223 archive_handle = init_handle();
224 archive_handle->seek = seek_by_read;
225 archive_handle->action_data = data_extract_all;
226#if 0 /* For testing (rpm -i only lists the files in internal cpio): */
227 archive_handle->action_header = header_list;
228 archive_handle->action_data = data_skip;
229#endif
230 archive_handle->ah_flags = ARCHIVE_RESTORE_DATE | ARCHIVE_CREATE_LEADING_DIRS
231 /* compat: overwrite existing files.
232 * try "rpm -i foo.src.rpm" few times in a row -
233 * standard rpm will not complain.
234 * (TODO? real rpm creates "file;1234" and then renames it) */
235 | ARCHIVE_UNLINK_OLD;
236 archive_handle->src_fd = fd;
237 /*archive_handle->offset = 0; - init_handle() did it */
238
239 setup_unzip_on_fd(archive_handle->src_fd, /*fail_if_not_detected:*/ 1);
240 while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
241 continue;
242}
243
244static rpm_index **rpm_gettags(int fd, int *num_tags)
245{
246 /* We should never need more than 200 (shrink via realloc later) */
247 rpm_index **tags = xzalloc(200 * sizeof(tags[0]));
248 int pass, tagindex = 0;
249
250 xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
251
252 /* 1st pass is the signature headers, 2nd is the main stuff */
253 for (pass = 0; pass < 2; pass++) {
254 struct rpm_header header;
255 rpm_index *tmpindex;
256 int storepos;
257
258 xread(fd, &header, sizeof(header));
259 if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER))
260 return NULL; /* Invalid magic, or not version 1 */
261 header.size = ntohl(header.size);
262 header.entries = ntohl(header.entries);
263 storepos = xlseek(fd, 0, SEEK_CUR) + header.entries * 16;
264
265 while (header.entries--) {
266 tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex));
267 xread(fd, tmpindex, sizeof(*tmpindex));
268 tmpindex->tag = ntohl(tmpindex->tag);
269 tmpindex->type = ntohl(tmpindex->type);
270 tmpindex->count = ntohl(tmpindex->count);
271 tmpindex->offset = storepos + ntohl(tmpindex->offset);
272 if (pass == 0)
273 tmpindex->tag -= 743;
274 }
275 storepos = xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
276 /* Skip padding to 8 byte boundary after reading signature headers */
277 if (pass == 0)
278 xlseek(fd, (-storepos) & 0x7, SEEK_CUR);
279 }
280 /* realloc tags to save space */
281 tags = xrealloc(tags, tagindex * sizeof(tags[0]));
282 *num_tags = tagindex;
283 /* All done, leave the file at the start of the gzipped cpio archive */
284 return tags;
285}
286
287static int bsearch_rpmtag(const void *key, const void *item)
288{
289 int *tag = (int *)key;
290 rpm_index **tmp = (rpm_index **) item;
291 return (*tag - tmp[0]->tag);
292}
293
294static int rpm_getcount(int tag)
295{
296 rpm_index **found;
297 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
298 if (!found)
299 return 0;
300 return found[0]->count;
301}
302
303static char *rpm_getstr(int tag, int itemindex)
304{
305 rpm_index **found;
306 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
307 if (!found || itemindex >= found[0]->count)
308 return NULL;
309 if (found[0]->type == RPM_STRING_TYPE
310 || found[0]->type == RPM_I18NSTRING_TYPE
311 || found[0]->type == RPM_STRING_ARRAY_TYPE
312 ) {
313 int n;
314 char *tmpstr = (char *) map + found[0]->offset;
315 for (n = 0; n < itemindex; n++)
316 tmpstr = tmpstr + strlen(tmpstr) + 1;
317 return tmpstr;
318 }
319 return NULL;
320}
321
322static int rpm_getint(int tag, int itemindex)
323{
324 rpm_index **found;
325 int *tmpint; /* NB: using int8_t* would be easier to code */
326
327 /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
328 * it's ok to ignore it because tag won't be used as a pointer */
329 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
330 if (!found || itemindex >= found[0]->count)
331 return -1;
332
333 tmpint = (int *) ((char *) map + found[0]->offset);
334
335 if (found[0]->type == RPM_INT32_TYPE) {
336 tmpint = (int *) ((char *) tmpint + itemindex*4);
337 /*return ntohl(*tmpint);*/
338 /* int can be != int32_t */
339 return ntohl(*(int32_t*)tmpint);
340 }
341 if (found[0]->type == RPM_INT16_TYPE) {
342 tmpint = (int *) ((char *) tmpint + itemindex*2);
343 /* ??? read int, and THEN ntohs() it?? */
344 /*return ntohs(*tmpint);*/
345 return ntohs(*(int16_t*)tmpint);
346 }
347 if (found[0]->type == RPM_INT8_TYPE) {
348 tmpint = (int *) ((char *) tmpint + itemindex);
349 /* ??? why we don't read byte here??? */
350 /*return ntohs(*tmpint);*/
351 return *(int8_t*)tmpint;
352 }
353 return -1;
354}
355
356static void fileaction_dobackup(char *filename, int fileref)
357{
358 struct stat oldfile;
359 int stat_res;
360 char *newname;
361 if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
362 /* Only need to backup config files */
363 stat_res = lstat(filename, &oldfile);
364 if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
365 /* File already exists - really should check MD5's etc to see if different */
366 newname = xasprintf("%s.rpmorig", filename);
367 copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
368 remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
369 free(newname);
370 }
371 }
372}
373
374static void fileaction_setowngrp(char *filename, int fileref)
375{
376 /* real rpm warns: "user foo does not exist - using <you>" */
377 struct passwd *pw = getpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref));
378 int uid = pw ? pw->pw_uid : getuid(); /* or euid? */
379 struct group *gr = getgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref));
380 int gid = gr ? gr->gr_gid : getgid();
381 chown(filename, uid, gid);
382}
383
384static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
385{
386 int count = 0;
387 while (rpm_getstr(filetag, count)) {
388 char* filename = xasprintf("%s%s",
389 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
390 rpm_getstr(TAG_BASENAMES, count));
391 fileaction(filename, count++);
392 free(filename);
393 }
394}
Note: See TracBrowser for help on using the repository browser.