/* vi: set sw=4 ts=4: */ /* * Mini rpm applet for busybox * * Copyright (C) 2001,2002 by Laurence Anderson * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ #include "libbb.h" #include "unarchive.h" #define RPM_HEADER_MAGIC "\216\255\350" #define RPM_CHAR_TYPE 1 #define RPM_INT8_TYPE 2 #define RPM_INT16_TYPE 3 #define RPM_INT32_TYPE 4 /* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */ #define RPM_STRING_TYPE 6 #define RPM_BIN_TYPE 7 #define RPM_STRING_ARRAY_TYPE 8 #define RPM_I18NSTRING_TYPE 9 #define TAG_NAME 1000 #define TAG_VERSION 1001 #define TAG_RELEASE 1002 #define TAG_SUMMARY 1004 #define TAG_DESCRIPTION 1005 #define TAG_BUILDTIME 1006 #define TAG_BUILDHOST 1007 #define TAG_SIZE 1009 #define TAG_VENDOR 1011 #define TAG_LICENSE 1014 #define TAG_PACKAGER 1015 #define TAG_GROUP 1016 #define TAG_URL 1020 #define TAG_PREIN 1023 #define TAG_POSTIN 1024 #define TAG_FILEFLAGS 1037 #define TAG_FILEUSERNAME 1039 #define TAG_FILEGROUPNAME 1040 #define TAG_SOURCERPM 1044 #define TAG_PREINPROG 1085 #define TAG_POSTINPROG 1086 #define TAG_PREFIXS 1098 #define TAG_DIRINDEXES 1116 #define TAG_BASENAMES 1117 #define TAG_DIRNAMES 1118 #define RPMFILE_CONFIG (1 << 0) #define RPMFILE_DOC (1 << 1) enum rpm_functions_e { rpm_query = 1, rpm_install = 2, rpm_query_info = 4, rpm_query_package = 8, rpm_query_list = 16, rpm_query_list_doc = 32, rpm_query_list_config = 64 }; typedef struct { uint32_t tag; /* 4 byte tag */ uint32_t type; /* 4 byte type */ uint32_t offset; /* 4 byte offset */ uint32_t count; /* 4 byte count */ } rpm_index; static void *map; static rpm_index **mytags; static int tagcount; static void extract_cpio_gz(int fd); static rpm_index **rpm_gettags(int fd, int *num_tags); static int bsearch_rpmtag(const void *key, const void *item); static char *rpm_getstr(int tag, int itemindex); static int rpm_getint(int tag, int itemindex); static int rpm_getcount(int tag); static void fileaction_dobackup(char *filename, int fileref); static void fileaction_setowngrp(char *filename, int fileref); static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref)); int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int rpm_main(int argc, char **argv) { int opt = 0, func = 0, rpm_fd, offset; const int pagesize = getpagesize(); while ((opt = getopt(argc, argv, "iqpldc")) != -1) { switch (opt) { case 'i': /* First arg: Install mode, with q: Information */ if (!func) func = rpm_install; else func |= rpm_query_info; break; case 'q': /* First arg: Query mode */ if (func) bb_show_usage(); func = rpm_query; break; case 'p': /* Query a package */ func |= rpm_query_package; break; case 'l': /* List files in a package */ func |= rpm_query_list; break; case 'd': /* List doc files in a package (implies list) */ func |= rpm_query_list; func |= rpm_query_list_doc; break; case 'c': /* List config files in a package (implies list) */ func |= rpm_query_list; func |= rpm_query_list_config; break; default: bb_show_usage(); } } argv += optind; //argc -= optind; if (!argv[0]) bb_show_usage(); while (*argv) { rpm_fd = xopen(*argv++, O_RDONLY); mytags = rpm_gettags(rpm_fd, &tagcount); if (!mytags) bb_error_msg_and_die("error reading rpm header"); offset = xlseek(rpm_fd, 0, SEEK_CUR); /* Mimimum is one page */ map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0); if (func & rpm_install) { /* Backup any config files */ loop_through_files(TAG_BASENAMES, fileaction_dobackup); /* Extact the archive */ extract_cpio_gz(rpm_fd); /* Set the correct file uid/gid's */ loop_through_files(TAG_BASENAMES, fileaction_setowngrp); } else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) { if (!(func & (rpm_query_info|rpm_query_list))) { /* If just a straight query, just give package name */ printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0)); } if (func & rpm_query_info) { /* Do the nice printout */ time_t bdate_time; struct tm *bdate; char bdatestring[50]; printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_PREFIXS, 0) ? rpm_getstr(TAG_PREFIXS, 0) : "(not relocateable)"); printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_VENDOR, 0) ? rpm_getstr(TAG_VENDOR, 0) : "(none)"); bdate_time = rpm_getint(TAG_BUILDTIME, 0); bdate = localtime((time_t *) &bdate_time); strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate); printf("Release : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring); printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0)); printf("Group : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), rpm_getstr(TAG_SOURCERPM, 0)); printf("Size : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0)); printf("URL : %s\n", rpm_getstr(TAG_URL, 0)); printf("Summary : %s\n", rpm_getstr(TAG_SUMMARY, 0)); printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0)); } if (func & rpm_query_list) { int count, it, flags; count = rpm_getcount(TAG_BASENAMES); for (it = 0; it < count; it++) { flags = rpm_getint(TAG_FILEFLAGS, it); switch (func & (rpm_query_list_doc|rpm_query_list_config)) { case rpm_query_list_doc: if (!(flags & RPMFILE_DOC)) continue; break; case rpm_query_list_config: if (!(flags & RPMFILE_CONFIG)) continue; break; case rpm_query_list_doc|rpm_query_list_config: if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue; break; } printf("%s%s\n", rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)), rpm_getstr(TAG_BASENAMES, it)); } } } free(mytags); } return 0; } static void extract_cpio_gz(int fd) { archive_handle_t *archive_handle; unsigned char magic[2]; #if BB_MMU IF_DESKTOP(long long) int FAST_FUNC (*xformer)(int src_fd, int dst_fd); enum { xformer_prog = 0 }; #else enum { xformer = 0 }; const char *xformer_prog; #endif /* Initialize */ archive_handle = init_handle(); archive_handle->seek = seek_by_read; //archive_handle->action_header = header_list; archive_handle->action_data = data_extract_all; archive_handle->ah_flags = ARCHIVE_RESTORE_DATE | ARCHIVE_CREATE_LEADING_DIRS /* compat: overwrite existing files. * try "rpm -i foo.src.rpm" few times in a row - * standard rpm will not complain. * (TODO? real rpm creates "file;1234" and then renames it) */ | ARCHIVE_UNLINK_OLD; archive_handle->src_fd = fd; /*archive_handle->offset = 0; - init_handle() did it */ // TODO: open_zipped does the same xread(archive_handle->src_fd, &magic, 2); #if BB_MMU xformer = unpack_gz_stream; #else xformer_prog = "gunzip"; #endif if (magic[0] != 0x1f || magic[1] != 0x8b) { if (!ENABLE_FEATURE_SEAMLESS_BZ2 || magic[0] != 'B' || magic[1] != 'Z' ) { bb_error_msg_and_die("no gzip" IF_FEATURE_SEAMLESS_BZ2("/bzip2") " magic"); } #if BB_MMU xformer = unpack_bz2_stream; #else xformer_prog = "bunzip2"; #endif } else { #if !BB_MMU /* NOMMU version of open_transformer execs an external unzipper that should * have the file position at the start of the file */ xlseek(archive_handle->src_fd, 0, SEEK_SET); #endif } xchdir("/"); /* Install RPM's to root */ open_transformer(archive_handle->src_fd, xformer, xformer_prog); archive_handle->offset = 0; while (get_header_cpio(archive_handle) == EXIT_SUCCESS) continue; } static rpm_index **rpm_gettags(int fd, int *num_tags) { /* We should never need mode than 200, and realloc later */ rpm_index **tags = xzalloc(200 * sizeof(tags[0])); int pass, tagindex = 0; xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */ /* 1st pass is the signature headers, 2nd is the main stuff */ for (pass = 0; pass < 2; pass++) { struct { char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */ uint8_t version; /* 1 byte version number */ uint32_t reserved; /* 4 bytes reserved */ uint32_t entries; /* Number of entries in header (4 bytes) */ uint32_t size; /* Size of store (4 bytes) */ } header; struct BUG_header { char BUG_header[sizeof(header) == 16 ? 1 : -1]; }; rpm_index *tmpindex; int storepos; xread(fd, &header, sizeof(header)); if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0) return NULL; /* Invalid magic */ if (header.version != 1) return NULL; /* This program only supports v1 headers */ header.size = ntohl(header.size); header.entries = ntohl(header.entries); storepos = xlseek(fd,0,SEEK_CUR) + header.entries * 16; while (header.entries--) { tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex)); xread(fd, tmpindex, sizeof(*tmpindex)); tmpindex->tag = ntohl(tmpindex->tag); tmpindex->type = ntohl(tmpindex->type); tmpindex->count = ntohl(tmpindex->count); tmpindex->offset = storepos + ntohl(tmpindex->offset); if (pass == 0) tmpindex->tag -= 743; } xlseek(fd, header.size, SEEK_CUR); /* Seek past store */ /* Skip padding to 8 byte boundary after reading signature headers */ if (pass == 0) xlseek(fd, (8 - (xlseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR); } tags = xrealloc(tags, tagindex * sizeof(tags[0])); /* realloc tags to save space */ *num_tags = tagindex; return tags; /* All done, leave the file at the start of the gzipped cpio archive */ } static int bsearch_rpmtag(const void *key, const void *item) { int *tag = (int *)key; rpm_index **tmp = (rpm_index **) item; return (*tag - tmp[0]->tag); } static int rpm_getcount(int tag) { rpm_index **found; found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag); if (!found) return 0; return found[0]->count; } static char *rpm_getstr(int tag, int itemindex) { rpm_index **found; found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag); if (!found || itemindex >= found[0]->count) return NULL; if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) { int n; char *tmpstr = (char *) map + found[0]->offset; for (n=0; n < itemindex; n++) tmpstr = tmpstr + strlen(tmpstr) + 1; return tmpstr; } return NULL; } static int rpm_getint(int tag, int itemindex) { rpm_index **found; int *tmpint; /* NB: using int8_t* would be easier to code */ /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ... * it's ok to ignore it because tag won't be used as a pointer */ found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag); if (!found || itemindex >= found[0]->count) return -1; tmpint = (int *) ((char *) map + found[0]->offset); if (found[0]->type == RPM_INT32_TYPE) { tmpint = (int *) ((char *) tmpint + itemindex*4); /*return ntohl(*tmpint);*/ /* int can be != int32_t */ return ntohl(*(int32_t*)tmpint); } if (found[0]->type == RPM_INT16_TYPE) { tmpint = (int *) ((char *) tmpint + itemindex*2); /* ??? read int, and THEN ntohs() it?? */ /*return ntohs(*tmpint);*/ return ntohs(*(int16_t*)tmpint); } if (found[0]->type == RPM_INT8_TYPE) { tmpint = (int *) ((char *) tmpint + itemindex); /* ??? why we don't read byte here??? */ /*return ntohs(*tmpint);*/ return *(int8_t*)tmpint; } return -1; } static void fileaction_dobackup(char *filename, int fileref) { struct stat oldfile; int stat_res; char *newname; if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) { /* Only need to backup config files */ stat_res = lstat(filename, &oldfile); if (stat_res == 0 && S_ISREG(oldfile.st_mode)) { /* File already exists - really should check MD5's etc to see if different */ newname = xasprintf("%s.rpmorig", filename); copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS); remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE); free(newname); } } } static void fileaction_setowngrp(char *filename, int fileref) { /* real rpm warns: "user foo does not exist - using <you>" */ struct passwd *pw = getpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref)); int uid = pw ? pw->pw_uid : getuid(); /* or euid? */ struct group *gr = getgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref)); int gid = gr ? gr->gr_gid : getgid(); chown(filename, uid, gid); } static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref)) { int count = 0; while (rpm_getstr(filetag, count)) { char* filename = xasprintf("%s%s", rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)), rpm_getstr(TAG_BASENAMES, count)); fileaction(filename, count++); free(filename); } }