1 /* vi: set sw=4 ts=4: */
3 * Mini rpm applet for busybox
5 * Copyright (C) 2001,2002 by Laurence Anderson
7 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
11 #include "unarchive.h"
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
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
32 #define TAG_VENDOR 1011
33 #define TAG_LICENSE 1014
34 #define TAG_PACKAGER 1015
35 #define TAG_GROUP 1016
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)
52 enum rpm_functions_e {
56 rpm_query_package = 8,
58 rpm_query_list_doc = 32,
59 rpm_query_list_config = 64
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 */
70 static rpm_index **mytags;
73 static void extract_cpio_gz(int fd);
74 static rpm_index **rpm_gettags(int fd, int *num_tags);
75 static int bsearch_rpmtag(const void *key, const void *item);
76 static char *rpm_getstr(int tag, int itemindex);
77 static int rpm_getint(int tag, int itemindex);
78 static int rpm_getcount(int tag);
79 static void fileaction_dobackup(char *filename, int fileref);
80 static void fileaction_setowngrp(char *filename, int fileref);
81 static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));
83 int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
84 int rpm_main(int argc, char **argv)
86 int opt = 0, func = 0, rpm_fd, offset;
87 const int pagesize = getpagesize();
89 while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
91 case 'i': /* First arg: Install mode, with q: Information */
92 if (!func) func = rpm_install;
93 else func |= rpm_query_info;
95 case 'q': /* First arg: Query mode */
96 if (func) bb_show_usage();
99 case 'p': /* Query a package */
100 func |= rpm_query_package;
102 case 'l': /* List files in a package */
103 func |= rpm_query_list;
105 case 'd': /* List doc files in a package (implies list) */
106 func |= rpm_query_list;
107 func |= rpm_query_list_doc;
109 case 'c': /* List config files in a package (implies list) */
110 func |= rpm_query_list;
111 func |= rpm_query_list_config;
124 rpm_fd = xopen(*argv++, O_RDONLY);
125 mytags = rpm_gettags(rpm_fd, &tagcount);
127 bb_error_msg_and_die("error reading rpm header");
128 offset = xlseek(rpm_fd, 0, SEEK_CUR);
129 /* Mimimum is one page */
130 map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
132 if (func & rpm_install) {
133 /* Backup any config files */
134 loop_through_files(TAG_BASENAMES, fileaction_dobackup);
135 /* Extact the archive */
136 extract_cpio_gz(rpm_fd);
137 /* Set the correct file uid/gid's */
138 loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
140 else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
141 if (!(func & (rpm_query_info|rpm_query_list))) {
142 /* If just a straight query, just give package name */
143 printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
145 if (func & rpm_query_info) {
146 /* Do the nice printout */
148 struct tm *bdate_ptm;
149 char bdatestring[50];
150 printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_PREFIXS, 0) ? rpm_getstr(TAG_PREFIXS, 0) : "(not relocateable)");
151 printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_VENDOR, 0) ? rpm_getstr(TAG_VENDOR, 0) : "(none)");
152 bdate_time = rpm_getint(TAG_BUILDTIME, 0);
153 bdate_ptm = localtime(&bdate_time);
154 strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
155 printf("Release : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring);
156 printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0));
157 printf("Group : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), rpm_getstr(TAG_SOURCERPM, 0));
158 printf("Size : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0));
159 printf("URL : %s\n", rpm_getstr(TAG_URL, 0));
160 printf("Summary : %s\n", rpm_getstr(TAG_SUMMARY, 0));
161 printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
163 if (func & rpm_query_list) {
164 int count, it, flags;
165 count = rpm_getcount(TAG_BASENAMES);
166 for (it = 0; it < count; it++) {
167 flags = rpm_getint(TAG_FILEFLAGS, it);
168 switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
169 case rpm_query_list_doc:
170 if (!(flags & RPMFILE_DOC)) continue;
172 case rpm_query_list_config:
173 if (!(flags & RPMFILE_CONFIG)) continue;
175 case rpm_query_list_doc|rpm_query_list_config:
176 if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
180 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
181 rpm_getstr(TAG_BASENAMES, it));
190 static void extract_cpio_gz(int fd)
192 archive_handle_t *archive_handle;
193 unsigned char magic[2];
195 IF_DESKTOP(long long) int FAST_FUNC (*xformer)(int src_fd, int dst_fd);
196 enum { xformer_prog = 0 };
198 enum { xformer = 0 };
199 const char *xformer_prog;
203 archive_handle = init_handle();
204 archive_handle->seek = seek_by_read;
205 //archive_handle->action_header = header_list;
206 archive_handle->action_data = data_extract_all;
207 archive_handle->ah_flags = ARCHIVE_RESTORE_DATE | ARCHIVE_CREATE_LEADING_DIRS
208 /* compat: overwrite existing files.
209 * try "rpm -i foo.src.rpm" few times in a row -
210 * standard rpm will not complain.
211 * (TODO? real rpm creates "file;1234" and then renames it) */
212 | ARCHIVE_UNLINK_OLD;
213 archive_handle->src_fd = fd;
214 /*archive_handle->offset = 0; - init_handle() did it */
216 // TODO: open_zipped does the same
218 xread(archive_handle->src_fd, &magic, 2);
220 xformer = unpack_gz_stream;
222 xformer_prog = "gunzip";
224 if (magic[0] != 0x1f || magic[1] != 0x8b) {
225 if (!ENABLE_FEATURE_SEAMLESS_BZ2
226 || magic[0] != 'B' || magic[1] != 'Z'
228 bb_error_msg_and_die("no gzip"
229 IF_FEATURE_SEAMLESS_BZ2("/bzip2")
233 xformer = unpack_bz2_stream;
235 xformer_prog = "bunzip2";
239 /* NOMMU version of open_transformer execs an external unzipper that should
240 * have the file position at the start of the file */
241 xlseek(archive_handle->src_fd, 0, SEEK_SET);
245 xchdir("/"); /* Install RPM's to root */
246 open_transformer(archive_handle->src_fd, xformer, xformer_prog);
247 archive_handle->offset = 0;
248 while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
253 static rpm_index **rpm_gettags(int fd, int *num_tags)
255 /* We should never need mode than 200, and realloc later */
256 rpm_index **tags = xzalloc(200 * sizeof(tags[0]));
257 int pass, tagindex = 0;
259 xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
261 /* 1st pass is the signature headers, 2nd is the main stuff */
262 for (pass = 0; pass < 2; pass++) {
264 char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
265 uint8_t version; /* 1 byte version number */
266 uint32_t reserved; /* 4 bytes reserved */
267 uint32_t entries; /* Number of entries in header (4 bytes) */
268 uint32_t size; /* Size of store (4 bytes) */
271 char BUG_header[sizeof(header) == 16 ? 1 : -1];
276 xread(fd, &header, sizeof(header));
277 if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0)
278 return NULL; /* Invalid magic */
279 if (header.version != 1)
280 return NULL; /* This program only supports v1 headers */
281 header.size = ntohl(header.size);
282 header.entries = ntohl(header.entries);
283 storepos = xlseek(fd,0,SEEK_CUR) + header.entries * 16;
285 while (header.entries--) {
286 tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex));
287 xread(fd, tmpindex, sizeof(*tmpindex));
288 tmpindex->tag = ntohl(tmpindex->tag);
289 tmpindex->type = ntohl(tmpindex->type);
290 tmpindex->count = ntohl(tmpindex->count);
291 tmpindex->offset = storepos + ntohl(tmpindex->offset);
293 tmpindex->tag -= 743;
295 xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
296 /* Skip padding to 8 byte boundary after reading signature headers */
298 xlseek(fd, (8 - (xlseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR);
300 tags = xrealloc(tags, tagindex * sizeof(tags[0])); /* realloc tags to save space */
301 *num_tags = tagindex;
302 return tags; /* All done, leave the file at the start of the gzipped cpio archive */
305 static int bsearch_rpmtag(const void *key, const void *item)
307 int *tag = (int *)key;
308 rpm_index **tmp = (rpm_index **) item;
309 return (*tag - tmp[0]->tag);
312 static int rpm_getcount(int tag)
315 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
318 return found[0]->count;
321 static char *rpm_getstr(int tag, int itemindex)
324 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
325 if (!found || itemindex >= found[0]->count)
327 if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) {
329 char *tmpstr = (char *) map + found[0]->offset;
330 for (n=0; n < itemindex; n++)
331 tmpstr = tmpstr + strlen(tmpstr) + 1;
337 static int rpm_getint(int tag, int itemindex)
340 int *tmpint; /* NB: using int8_t* would be easier to code */
342 /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
343 * it's ok to ignore it because tag won't be used as a pointer */
344 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
345 if (!found || itemindex >= found[0]->count)
348 tmpint = (int *) ((char *) map + found[0]->offset);
350 if (found[0]->type == RPM_INT32_TYPE) {
351 tmpint = (int *) ((char *) tmpint + itemindex*4);
352 /*return ntohl(*tmpint);*/
353 /* int can be != int32_t */
354 return ntohl(*(int32_t*)tmpint);
356 if (found[0]->type == RPM_INT16_TYPE) {
357 tmpint = (int *) ((char *) tmpint + itemindex*2);
358 /* ??? read int, and THEN ntohs() it?? */
359 /*return ntohs(*tmpint);*/
360 return ntohs(*(int16_t*)tmpint);
362 if (found[0]->type == RPM_INT8_TYPE) {
363 tmpint = (int *) ((char *) tmpint + itemindex);
364 /* ??? why we don't read byte here??? */
365 /*return ntohs(*tmpint);*/
366 return *(int8_t*)tmpint;
371 static void fileaction_dobackup(char *filename, int fileref)
376 if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
377 /* Only need to backup config files */
378 stat_res = lstat(filename, &oldfile);
379 if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
380 /* File already exists - really should check MD5's etc to see if different */
381 newname = xasprintf("%s.rpmorig", filename);
382 copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
383 remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
389 static void fileaction_setowngrp(char *filename, int fileref)
391 /* real rpm warns: "user foo does not exist - using <you>" */
392 struct passwd *pw = getpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref));
393 int uid = pw ? pw->pw_uid : getuid(); /* or euid? */
394 struct group *gr = getgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref));
395 int gid = gr ? gr->gr_gid : getgid();
396 chown(filename, uid, gid);
399 static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
402 while (rpm_getstr(filetag, count)) {
403 char* filename = xasprintf("%s%s",
404 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
405 rpm_getstr(TAG_BASENAMES, count));
406 fileaction(filename, count++);