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
24 #define RPMTAG_NAME 1000
25 #define RPMTAG_VERSION 1001
26 #define RPMTAG_RELEASE 1002
27 #define RPMTAG_SUMMARY 1004
28 #define RPMTAG_DESCRIPTION 1005
29 #define RPMTAG_BUILDTIME 1006
30 #define RPMTAG_BUILDHOST 1007
31 #define RPMTAG_SIZE 1009
32 #define RPMTAG_VENDOR 1011
33 #define RPMTAG_LICENSE 1014
34 #define RPMTAG_PACKAGER 1015
35 #define RPMTAG_GROUP 1016
36 #define RPMTAG_URL 1020
37 #define RPMTAG_PREIN 1023
38 #define RPMTAG_POSTIN 1024
39 #define RPMTAG_FILEFLAGS 1037
40 #define RPMTAG_FILEUSERNAME 1039
41 #define RPMTAG_FILEGROUPNAME 1040
42 #define RPMTAG_SOURCERPM 1044
43 #define RPMTAG_PREINPROG 1085
44 #define RPMTAG_POSTINPROG 1086
45 #define RPMTAG_PREFIXS 1098
46 #define RPMTAG_DIRINDEXES 1116
47 #define RPMTAG_BASENAMES 1117
48 #define RPMTAG_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_getstring(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)
85 int opt = 0, func = 0, rpm_fd, offset;
87 while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
89 case 'i': // First arg: Install mode, with q: Information
90 if (!func) func |= rpm_install;
91 else func |= rpm_query_info;
93 case 'q': // First arg: Query mode
94 if (!func) func |= rpm_query;
97 case 'p': // Query a package
98 func |= rpm_query_package;
100 case 'l': // List files in a package
101 func |= rpm_query_list;
103 case 'd': // List doc files in a package (implies list)
104 func |= rpm_query_list;
105 func |= rpm_query_list_doc;
107 case 'c': // List config files in a package (implies list)
108 func |= rpm_query_list;
109 func |= rpm_query_list_config;
116 if (optind == argc) bb_show_usage();
117 while (optind < argc) {
118 rpm_fd = xopen(argv[optind], O_RDONLY);
119 mytags = rpm_gettags(rpm_fd, (int *) &tagcount);
120 offset = lseek(rpm_fd, 0, SEEK_CUR);
121 if (!mytags) { printf("Error reading rpm header\n"); exit(-1); }
122 map = mmap(0, offset > getpagesize() ? (offset + offset % getpagesize()) : getpagesize(), PROT_READ, MAP_PRIVATE, rpm_fd, 0); // Mimimum is one page
123 if (func & rpm_install) {
124 loop_through_files(RPMTAG_BASENAMES, fileaction_dobackup); /* Backup any config files */
125 extract_cpio_gz(rpm_fd); // Extact the archive
126 loop_through_files(RPMTAG_BASENAMES, fileaction_setowngrp); /* Set the correct file uid/gid's */
127 } else if (func & rpm_query && func & rpm_query_package) {
128 if (!((func & rpm_query_info) || (func & rpm_query_list))) { // If just a straight query, just give package name
129 printf("%s-%s-%s\n", rpm_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_RELEASE, 0));
131 if (func & rpm_query_info) {
132 /* Do the nice printout */
135 char bdatestring[50];
136 printf("Name : %-29sRelocations: %s\n", rpm_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_PREFIXS, 0) ? rpm_getstring(RPMTAG_PREFIXS, 0) : "(not relocateable)");
137 printf("Version : %-34sVendor: %s\n", rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_VENDOR, 0) ? rpm_getstring(RPMTAG_VENDOR, 0) : "(none)");
138 bdate_time = rpm_getint(RPMTAG_BUILDTIME, 0);
139 bdate = localtime((time_t *) &bdate_time);
140 strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate);
141 printf("Release : %-30sBuild Date: %s\n", rpm_getstring(RPMTAG_RELEASE, 0), bdatestring);
142 printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstring(RPMTAG_BUILDHOST, 0));
143 printf("Group : %-30sSource RPM: %s\n", rpm_getstring(RPMTAG_GROUP, 0), rpm_getstring(RPMTAG_SOURCERPM, 0));
144 printf("Size : %-33dLicense: %s\n", rpm_getint(RPMTAG_SIZE, 0), rpm_getstring(RPMTAG_LICENSE, 0));
145 printf("URL : %s\n", rpm_getstring(RPMTAG_URL, 0));
146 printf("Summary : %s\n", rpm_getstring(RPMTAG_SUMMARY, 0));
147 printf("Description :\n%s\n", rpm_getstring(RPMTAG_DESCRIPTION, 0));
149 if (func & rpm_query_list) {
150 int count, it, flags;
151 count = rpm_getcount(RPMTAG_BASENAMES);
152 for (it = 0; it < count; it++) {
153 flags = rpm_getint(RPMTAG_FILEFLAGS, it);
154 switch ((func & rpm_query_list_doc) + (func & rpm_query_list_config))
156 case rpm_query_list_doc: if (!(flags & RPMFILE_DOC)) continue; break;
157 case rpm_query_list_config: if (!(flags & RPMFILE_CONFIG)) continue; break;
158 case rpm_query_list_doc + rpm_query_list_config: if (!((flags & RPMFILE_CONFIG) || (flags & RPMFILE_DOC))) continue; break;
160 printf("%s%s\n", rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES, it)), rpm_getstring(RPMTAG_BASENAMES, it));
170 static void extract_cpio_gz(int fd) {
171 archive_handle_t *archive_handle;
172 unsigned char magic[2];
175 archive_handle = init_handle();
176 archive_handle->seek = seek_by_char;
177 //archive_handle->action_header = header_list;
178 archive_handle->action_data = data_extract_all;
179 archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
180 archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
181 archive_handle->src_fd = fd;
182 archive_handle->offset = 0;
184 xread(archive_handle->src_fd, &magic, 2);
185 if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
186 bb_error_msg_and_die("Invalid gzip magic");
188 check_header_gzip(archive_handle->src_fd);
189 xchdir("/"); // Install RPM's to root
191 archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip);
192 archive_handle->offset = 0;
193 while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
197 static rpm_index **rpm_gettags(int fd, int *num_tags)
199 rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *)); /* We should never need mode than 200, and realloc later */
200 int pass, tagindex = 0;
201 lseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
203 for (pass = 0; pass < 2; pass++) { /* 1st pass is the signature headers, 2nd is the main stuff */
205 char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
206 uint8_t version; /* 1 byte version number */
207 uint32_t reserved; /* 4 bytes reserved */
208 uint32_t entries; /* Number of entries in header (4 bytes) */
209 uint32_t size; /* Size of store (4 bytes) */
214 read(fd, &header, sizeof(header));
215 if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0) return NULL; /* Invalid magic */
216 if (header.version != 1) return NULL; /* This program only supports v1 headers */
217 header.size = ntohl(header.size);
218 header.entries = ntohl(header.entries);
219 storepos = lseek(fd,0,SEEK_CUR) + header.entries * 16;
221 while (header.entries--) {
222 tmpindex = tags[tagindex++] = xmalloc(sizeof(rpm_index));
223 read(fd, tmpindex, sizeof(rpm_index));
224 tmpindex->tag = ntohl(tmpindex->tag); tmpindex->type = ntohl(tmpindex->type); tmpindex->count = ntohl(tmpindex->count);
225 tmpindex->offset = storepos + ntohl(tmpindex->offset);
226 if (pass==0) tmpindex->tag -= 743;
228 lseek(fd, header.size, SEEK_CUR); /* Seek past store */
229 if (pass==0) lseek(fd, (8 - (lseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR); /* Skip padding to 8 byte boundary after reading signature headers */
231 tags = realloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */
232 *num_tags = tagindex;
233 return tags; /* All done, leave the file at the start of the gzipped cpio archive */
236 static int bsearch_rpmtag(const void *key, const void *item)
238 int *tag = (int *)key;
239 rpm_index **tmp = (rpm_index **) item;
240 return (*tag - tmp[0]->tag);
243 static int rpm_getcount(int tag)
246 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
247 if (!found) return 0;
248 else return found[0]->count;
251 static char *rpm_getstring(int tag, int itemindex)
254 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
255 if (!found || itemindex >= found[0]->count) return NULL;
256 if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) {
258 char *tmpstr = (char *) (map + found[0]->offset);
259 for (n=0; n < itemindex; n++) tmpstr = tmpstr + strlen(tmpstr) + 1;
264 static int rpm_getint(int tag, int itemindex)
268 /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
269 * it's ok to ignore it because tag won't be used as a pointer */
270 found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
271 if (!found || itemindex >= found[0]->count) return -1;
272 tmpint = (int *) (map + found[0]->offset);
273 if (found[0]->type == RPM_INT32_TYPE) {
274 for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 4);
275 return ntohl(*tmpint);
276 } else if (found[0]->type == RPM_INT16_TYPE) {
277 for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 2);
278 return ntohs(*tmpint);
279 } else if (found[0]->type == RPM_INT8_TYPE) {
280 for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 1);
281 return ntohs(*tmpint);
285 static void fileaction_dobackup(char *filename, int fileref)
290 if (rpm_getint(RPMTAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) { /* Only need to backup config files */
291 stat_res = lstat (filename, &oldfile);
292 if (stat_res == 0 && S_ISREG(oldfile.st_mode)) { /* File already exists - really should check MD5's etc to see if different */
293 newname = xasprintf("%s.rpmorig", filename);
294 copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
295 remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
301 static void fileaction_setowngrp(char *filename, int fileref)
304 uid = bb_xgetpwnam(rpm_getstring(RPMTAG_FILEUSERNAME, fileref));
305 gid = bb_xgetgrnam(rpm_getstring(RPMTAG_FILEGROUPNAME, fileref));
306 chown (filename, uid, gid);
309 static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
312 while (rpm_getstring(filetag, count)) {
313 char * filename = xasprintf("%s%s",
314 rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES,
315 count)), rpm_getstring(RPMTAG_BASENAMES, count));
316 fileaction(filename, count++);