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"
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
50 #define RPMFILE_CONFIG (1 << 0)
51 #define RPMFILE_DOC (1 << 1)
53 enum rpm_functions_e {
57 rpm_query_package = 8,
59 rpm_query_list_doc = 32,
60 rpm_query_list_config = 64
64 uint32_t tag; /* 4 byte tag */
65 uint32_t type; /* 4 byte type */
66 uint32_t offset; /* 4 byte offset */
67 uint32_t count; /* 4 byte count */
71 static rpm_index **mytags;
74 static void extract_cpio_gz(int fd);
75 static rpm_index **rpm_gettags(int fd, int *num_tags);
76 static int bsearch_rpmtag(const void *key, const void *item);
77 static char *rpm_getstr(int tag, int itemindex);
78 static int rpm_getint(int tag, int itemindex);
79 static int rpm_getcount(int tag);
80 static void fileaction_dobackup(char *filename, int fileref);
81 static void fileaction_setowngrp(char *filename, int fileref);
82 static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));
84 int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
85 int rpm_main(int argc, char **argv)
87 int opt = 0, func = 0, rpm_fd, offset;
88 const int pagesize = getpagesize();
90 while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
92 case 'i': /* First arg: Install mode, with q: Information */
93 if (!func) func = rpm_install;
94 else func |= rpm_query_info;
96 case 'q': /* First arg: Query mode */
97 if (func) bb_show_usage();
100 case 'p': /* Query a package */
101 func |= rpm_query_package;
103 case 'l': /* List files in a package */
104 func |= rpm_query_list;
106 case 'd': /* List doc files in a package (implies list) */
107 func |= rpm_query_list;
108 func |= rpm_query_list_doc;
110 case 'c': /* List config files in a package (implies list) */
111 func |= rpm_query_list;
112 func |= rpm_query_list_config;
125 rpm_fd = xopen(*argv++, O_RDONLY);
126 mytags = rpm_gettags(rpm_fd, &tagcount);
128 bb_error_msg_and_die("error reading rpm header");
129 offset = xlseek(rpm_fd, 0, SEEK_CUR);
130 /* Mimimum is one page */
131 map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
133 if (func & rpm_install) {
134 /* Backup any config files */
135 loop_through_files(TAG_BASENAMES, fileaction_dobackup);
136 /* Extact the archive */
137 extract_cpio_gz(rpm_fd);
138 /* Set the correct file uid/gid's */
139 loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
141 else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
142 if (!(func & (rpm_query_info|rpm_query_list))) {
143 /* If just a straight query, just give package name */
144 printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
146 if (func & rpm_query_info) {
147 /* Do the nice printout */
149 struct tm *bdate_ptm;
150 char bdatestring[50];
153 p = rpm_getstr(TAG_PREFIXS, 0);
154 if (!p) p = "(not relocateable)";
155 printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), p);
156 p = rpm_getstr(TAG_VENDOR, 0);
157 if (!p) p = "(none)";
158 printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), p);
159 bdate_time = rpm_getint(TAG_BUILDTIME, 0);
160 bdate_ptm = localtime(&bdate_time);
161 strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
162 printf("Release : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring);
163 printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0));
164 printf("Group : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), rpm_getstr(TAG_SOURCERPM, 0));
165 printf("Size : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0));
166 printf("URL : %s\n", rpm_getstr(TAG_URL, 0));
167 printf("Summary : %s\n", rpm_getstr(TAG_SUMMARY, 0));
168 printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
170 if (func & rpm_query_list) {
171 int count, it, flags;
172 count = rpm_getcount(TAG_BASENAMES);
173 for (it = 0; it < count; it++) {
174 flags = rpm_getint(TAG_FILEFLAGS, it);
175 switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
176 case rpm_query_list_doc:
177 if (!(flags & RPMFILE_DOC)) continue;
179 case rpm_query_list_config:
180 if (!(flags & RPMFILE_CONFIG)) continue;
182 case rpm_query_list_doc|rpm_query_list_config:
183 if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
187 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
188 rpm_getstr(TAG_BASENAMES, it));
197 static void extract_cpio_gz(int fd)
199 archive_handle_t *archive_handle;
202 archive_handle = init_handle();
203 archive_handle->seek = seek_by_read;
204 archive_handle->action_data = data_extract_all;
205 #if 0 /* For testing (rpm -i only lists the files in internal cpio): */
206 archive_handle->action_header = header_list;
207 archive_handle->action_data = data_skip;
209 archive_handle->ah_flags = ARCHIVE_RESTORE_DATE | ARCHIVE_CREATE_LEADING_DIRS
210 /* compat: overwrite existing files.
211 * try "rpm -i foo.src.rpm" few times in a row -
212 * standard rpm will not complain.
213 * (TODO? real rpm creates "file;1234" and then renames it) */
214 | ARCHIVE_UNLINK_OLD;
215 archive_handle->src_fd = fd;
216 /*archive_handle->offset = 0; - init_handle() did it */
218 xchdir("/"); /* Install RPM's to root */
219 setup_unzip_on_fd(archive_handle->src_fd /*, fail_if_not_detected: 1*/);
220 while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
224 static rpm_index **rpm_gettags(int fd, int *num_tags)
226 /* We should never need more than 200 (shrink via realloc later) */
227 rpm_index **tags = xzalloc(200 * sizeof(tags[0]));
228 int pass, tagindex = 0;
230 xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
232 /* 1st pass is the signature headers, 2nd is the main stuff */
233 for (pass = 0; pass < 2; pass++) {
234 struct rpm_header header;
238 xread(fd, &header, sizeof(header));
239 if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER))
240 return NULL; /* Invalid magic, or not version 1 */
241 header.size = ntohl(header.size);
242 header.entries = ntohl(header.entries);
243 storepos = xlseek(fd, 0, SEEK_CUR) + header.entries * 16;
245 while (header.entries--) {
246 tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex));
247 xread(fd, tmpindex, sizeof(*tmpindex));
248 tmpindex->tag = ntohl(tmpindex->tag);
249 tmpindex->type = ntohl(tmpindex->type);
250 tmpindex->count = ntohl(tmpindex->count);
251 tmpindex->offset = storepos + ntohl(tmpindex->offset);
253 tmpindex->tag -= 743;
255 storepos = xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
256 /* Skip padding to 8 byte boundary after reading signature headers */
258 xlseek(fd, (-storepos) & 0x7, SEEK_CUR);
260 /* realloc tags to save space */
261 tags = xrealloc(tags, tagindex * sizeof(tags[0]));
262 *num_tags = tagindex;
263 /* All done, leave the file at the start of the gzipped cpio archive */
267 static int bsearch_rpmtag(const void *key, const void *item)
269 int *tag = (int *)key;
270 rpm_index **tmp = (rpm_index **) item;
271 return (*tag - tmp[0]->tag);
274 static int rpm_getcount(int tag)
277 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
280 return found[0]->count;
283 static char *rpm_getstr(int tag, int itemindex)
286 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
287 if (!found || itemindex >= found[0]->count)
289 if (found[0]->type == RPM_STRING_TYPE
290 || found[0]->type == RPM_I18NSTRING_TYPE
291 || found[0]->type == RPM_STRING_ARRAY_TYPE
294 char *tmpstr = (char *) map + found[0]->offset;
295 for (n = 0; n < itemindex; n++)
296 tmpstr = tmpstr + strlen(tmpstr) + 1;
302 static int rpm_getint(int tag, int itemindex)
305 int *tmpint; /* NB: using int8_t* would be easier to code */
307 /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
308 * it's ok to ignore it because tag won't be used as a pointer */
309 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
310 if (!found || itemindex >= found[0]->count)
313 tmpint = (int *) ((char *) map + found[0]->offset);
315 if (found[0]->type == RPM_INT32_TYPE) {
316 tmpint = (int *) ((char *) tmpint + itemindex*4);
317 /*return ntohl(*tmpint);*/
318 /* int can be != int32_t */
319 return ntohl(*(int32_t*)tmpint);
321 if (found[0]->type == RPM_INT16_TYPE) {
322 tmpint = (int *) ((char *) tmpint + itemindex*2);
323 /* ??? read int, and THEN ntohs() it?? */
324 /*return ntohs(*tmpint);*/
325 return ntohs(*(int16_t*)tmpint);
327 if (found[0]->type == RPM_INT8_TYPE) {
328 tmpint = (int *) ((char *) tmpint + itemindex);
329 /* ??? why we don't read byte here??? */
330 /*return ntohs(*tmpint);*/
331 return *(int8_t*)tmpint;
336 static void fileaction_dobackup(char *filename, int fileref)
341 if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
342 /* Only need to backup config files */
343 stat_res = lstat(filename, &oldfile);
344 if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
345 /* File already exists - really should check MD5's etc to see if different */
346 newname = xasprintf("%s.rpmorig", filename);
347 copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
348 remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
354 static void fileaction_setowngrp(char *filename, int fileref)
356 /* real rpm warns: "user foo does not exist - using <you>" */
357 struct passwd *pw = getpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref));
358 int uid = pw ? pw->pw_uid : getuid(); /* or euid? */
359 struct group *gr = getgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref));
360 int gid = gr ? gr->gr_gid : getgid();
361 chown(filename, uid, gid);
364 static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
367 while (rpm_getstr(filetag, count)) {
368 char* filename = xasprintf("%s%s",
369 rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
370 rpm_getstr(TAG_BASENAMES, count));
371 fileaction(filename, count++);