/* 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 "busybox.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 RPMTAG_NAME 1000 #define RPMTAG_VERSION 1001 #define RPMTAG_RELEASE 1002 #define RPMTAG_SUMMARY 1004 #define RPMTAG_DESCRIPTION 1005 #define RPMTAG_BUILDTIME 1006 #define RPMTAG_BUILDHOST 1007 #define RPMTAG_SIZE 1009 #define RPMTAG_VENDOR 1011 #define RPMTAG_LICENSE 1014 #define RPMTAG_PACKAGER 1015 #define RPMTAG_GROUP 1016 #define RPMTAG_URL 1020 #define RPMTAG_PREIN 1023 #define RPMTAG_POSTIN 1024 #define RPMTAG_FILEFLAGS 1037 #define RPMTAG_FILEUSERNAME 1039 #define RPMTAG_FILEGROUPNAME 1040 #define RPMTAG_SOURCERPM 1044 #define RPMTAG_PREINPROG 1085 #define RPMTAG_POSTINPROG 1086 #define RPMTAG_PREFIXS 1098 #define RPMTAG_DIRINDEXES 1116 #define RPMTAG_BASENAMES 1117 #define RPMTAG_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_getstring(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) { int opt = 0, func = 0, rpm_fd, offset; 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) func |= rpm_query; else bb_show_usage(); 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(); } } if (optind == argc) bb_show_usage(); while (optind < argc) { rpm_fd = xopen(argv[optind], O_RDONLY); mytags = rpm_gettags(rpm_fd, (int *) &tagcount); offset = lseek(rpm_fd, 0, SEEK_CUR); if (!mytags) { printf("Error reading rpm header\n"); exit(-1); } map = mmap(0, offset > getpagesize() ? (offset + offset % getpagesize()) : getpagesize(), PROT_READ, MAP_PRIVATE, rpm_fd, 0); // Mimimum is one page if (func & rpm_install) { loop_through_files(RPMTAG_BASENAMES, fileaction_dobackup); /* Backup any config files */ extract_cpio_gz(rpm_fd); // Extact the archive loop_through_files(RPMTAG_BASENAMES, fileaction_setowngrp); /* Set the correct file uid/gid's */ } else if (func & rpm_query && func & rpm_query_package) { if (!((func & rpm_query_info) || (func & rpm_query_list))) { // If just a straight query, just give package name printf("%s-%s-%s\n", rpm_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_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_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_PREFIXS, 0) ? rpm_getstring(RPMTAG_PREFIXS, 0) : "(not relocateable)"); printf("Version : %-34sVendor: %s\n", rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_VENDOR, 0) ? rpm_getstring(RPMTAG_VENDOR, 0) : "(none)"); bdate_time = rpm_getint(RPMTAG_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_getstring(RPMTAG_RELEASE, 0), bdatestring); printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstring(RPMTAG_BUILDHOST, 0)); printf("Group : %-30sSource RPM: %s\n", rpm_getstring(RPMTAG_GROUP, 0), rpm_getstring(RPMTAG_SOURCERPM, 0)); printf("Size : %-33dLicense: %s\n", rpm_getint(RPMTAG_SIZE, 0), rpm_getstring(RPMTAG_LICENSE, 0)); printf("URL : %s\n", rpm_getstring(RPMTAG_URL, 0)); printf("Summary : %s\n", rpm_getstring(RPMTAG_SUMMARY, 0)); printf("Description :\n%s\n", rpm_getstring(RPMTAG_DESCRIPTION, 0)); } if (func & rpm_query_list) { int count, it, flags; count = rpm_getcount(RPMTAG_BASENAMES); for (it = 0; it < count; it++) { flags = rpm_getint(RPMTAG_FILEFLAGS, it); switch ((func & rpm_query_list_doc) + (func & 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) || (flags & RPMFILE_DOC))) continue; break; } printf("%s%s\n", rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES, it)), rpm_getstring(RPMTAG_BASENAMES, it)); } } } optind++; free (mytags); } return 0; } static void extract_cpio_gz(int fd) { archive_handle_t *archive_handle; unsigned char magic[2]; /* Initialise */ archive_handle = init_handle(); archive_handle->seek = seek_by_char; //archive_handle->action_header = header_list; archive_handle->action_data = data_extract_all; archive_handle->flags |= ARCHIVE_PRESERVE_DATE; archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS; archive_handle->src_fd = fd; archive_handle->offset = 0; xread(archive_handle->src_fd, &magic, 2); if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) { bb_error_msg_and_die("Invalid gzip magic"); } check_header_gzip(archive_handle->src_fd); xchdir("/"); // Install RPM's to root archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip); archive_handle->offset = 0; while (get_header_cpio(archive_handle) == EXIT_SUCCESS); } static rpm_index **rpm_gettags(int fd, int *num_tags) { rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *)); /* We should never need mode than 200, and realloc later */ int pass, tagindex = 0; lseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */ for (pass = 0; pass < 2; pass++) { /* 1st pass is the signature headers, 2nd is the main stuff */ 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; rpm_index *tmpindex; int storepos; read(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 = lseek(fd,0,SEEK_CUR) + header.entries * 16; while (header.entries--) { tmpindex = tags[tagindex++] = xmalloc(sizeof(rpm_index)); read(fd, tmpindex, sizeof(rpm_index)); 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; } lseek(fd, header.size, SEEK_CUR); /* Seek past store */ 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 */ } tags = realloc(tags, tagindex * sizeof(struct rpmtag *)); /* 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; else return found[0]->count; } static char *rpm_getstring(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; } else return NULL; } static int rpm_getint(int tag, int itemindex) { rpm_index **found; int n, *tmpint; /* 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 *) (map + found[0]->offset); if (found[0]->type == RPM_INT32_TYPE) { for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 4); return ntohl(*tmpint); } else if (found[0]->type == RPM_INT16_TYPE) { for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 2); return ntohs(*tmpint); } else if (found[0]->type == RPM_INT8_TYPE) { for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 1); return ntohs(*tmpint); } else return -1; } static void fileaction_dobackup(char *filename, int fileref) { struct stat oldfile; int stat_res; char *newname; if (rpm_getint(RPMTAG_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) { int uid, gid; uid = bb_xgetpwnam(rpm_getstring(RPMTAG_FILEUSERNAME, fileref)); gid = bb_xgetgrnam(rpm_getstring(RPMTAG_FILEGROUPNAME, fileref)); chown (filename, uid, gid); } static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref)) { int count = 0; while (rpm_getstring(filetag, count)) { char * filename = xasprintf("%s%s", rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES, count)), rpm_getstring(RPMTAG_BASENAMES, count)); fileaction(filename, count++); free(filename); } }