source: MondoRescue/branches/3.3/mindi-busybox/archival/rpm.c@ 3621

Last change on this file since 3621 was 3621, checked in by Bruno Cornec, 7 years ago

New 3?3 banch for incorporation of latest busybox 1.25. Changing minor version to handle potential incompatibilities.
File size: 12.4 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//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
75enum 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
85typedef 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
92struct 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
100static 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
131static 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
174static 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
181static 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
190static 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
209static 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
236static 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
254static 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
264static 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
276int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
277int 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}
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