/* 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 source tree. */ //config:config RPM //config: bool "rpm (33 kb)" //config: default y //config: help //config: Mini RPM applet - queries and extracts RPM packages. //applet:IF_RPM(APPLET(rpm, BB_DIR_BIN, BB_SUID_DROP)) //kbuild:lib-$(CONFIG_RPM) += rpm.o #include "libbb.h" #include "common_bufsiz.h" #include "bb_archive.h" #include "rpm.h" #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; struct globals { void *map; rpm_index *mytags; int tagcount; unsigned mapsize, pagesize; } FIX_ALIASING; #define G (*(struct globals*)bb_common_bufsiz1) #define INIT_G() do { setup_common_bufsiz(); } while (0) static void extract_cpio(int fd, const char *source_rpm) { archive_handle_t *archive_handle; if (source_rpm != NULL) { /* Binary rpm (it was built from some SRPM), install to root */ xchdir("/"); } /* else: SRPM, install to current dir */ /* Initialize */ archive_handle = init_handle(); archive_handle->seek = seek_by_read; archive_handle->action_data = data_extract_all; #if 0 /* For testing (rpm -i only lists the files in internal cpio): */ archive_handle->action_header = header_list; archive_handle->action_data = data_skip; #endif 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. */ | ARCHIVE_REPLACE_VIA_RENAME; archive_handle->src_fd = fd; /*archive_handle->offset = 0; - init_handle() did it */ setup_unzip_on_fd(archive_handle->src_fd, /*fail_if_not_compressed:*/ 1); while (get_header_cpio(archive_handle) == EXIT_SUCCESS) continue; } static rpm_index *rpm_gettags(int fd) { rpm_index *tags; unsigned pass, idx; unsigned storepos; storepos = xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */ G.tagcount = 0; tags = NULL; idx = 0; /* 1st pass is the signature headers, 2nd is the main stuff */ for (pass = 0; pass < 2; pass++) { struct rpm_header header; unsigned cnt; xread(fd, &header, sizeof(header)); if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER)) return NULL; /* Invalid magic, or not version 1 */ header.size = ntohl(header.size); cnt = ntohl(header.entries); storepos += sizeof(header) + cnt * 16; G.tagcount += cnt; tags = xrealloc(tags, G.tagcount * sizeof(tags[0])); xread(fd, &tags[idx], sizeof(tags[0]) * cnt); while (cnt--) { rpm_index *tag = &tags[idx]; tag->tag = ntohl(tag->tag); tag->type = ntohl(tag->type); tag->count = ntohl(tag->count); tag->offset = storepos + ntohl(tag->offset); if (pass == 0) tag->tag -= 743; idx++; } /* Skip padding to 8 byte boundary after reading signature headers */ if (pass == 0) while (header.size & 7) header.size++; /* Seek past store */ storepos = xlseek(fd, header.size, SEEK_CUR); } /* Map the store */ storepos = (storepos + G.pagesize) & -(int)G.pagesize; /* remember size for munmap */ G.mapsize = storepos; /* some NOMMU systems prefer MAP_PRIVATE over MAP_SHARED */ G.map = mmap(0, storepos, PROT_READ, MAP_PRIVATE, fd, 0); if (G.map == MAP_FAILED) return NULL; /* error */ return tags; } static int bsearch_rpmtag(const void *key, const void *item) { int *tag = (int *)key; rpm_index *tmp = (rpm_index *) item; return (*tag - tmp->tag); } static int rpm_getcount(int tag) { rpm_index *found; found = bsearch(&tag, G.mytags, G.tagcount, sizeof(G.mytags[0]), bsearch_rpmtag); if (!found) return 0; return found->count; } static char *rpm_getstr(int tag, int itemindex) { rpm_index *found; found = bsearch(&tag, G.mytags, G.tagcount, sizeof(G.mytags[0]), bsearch_rpmtag); if (!found || itemindex >= found->count) return NULL; if (found->type == RPM_STRING_TYPE || found->type == RPM_I18NSTRING_TYPE || found->type == RPM_STRING_ARRAY_TYPE ) { int n; char *tmpstr = (char *) G.map + found->offset; for (n = 0; n < itemindex; n++) tmpstr = tmpstr + strlen(tmpstr) + 1; return tmpstr; } return NULL; } static char *rpm_getstr0(int tag) { return rpm_getstr(tag, 0); } static int rpm_getint(int tag, int itemindex) { rpm_index *found; char *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, G.mytags, G.tagcount, sizeof(G.mytags[0]), bsearch_rpmtag); if (!found || itemindex >= found->count) return -1; tmpint = (char *) G.map + found->offset; if (found->type == RPM_INT32_TYPE) { tmpint += itemindex*4; return ntohl(*(int32_t*)tmpint); } if (found->type == RPM_INT16_TYPE) { tmpint += itemindex*2; return ntohs(*(int16_t*)tmpint); } if (found->type == RPM_INT8_TYPE) { tmpint += itemindex; 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 " */ 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); } } #if 0 //DEBUG static void print_all_tags(void) { unsigned i = 0; while (i < G.tagcount) { rpm_index *tag = &G.mytags[i]; if (tag->type == RPM_STRING_TYPE || tag->type == RPM_I18NSTRING_TYPE || tag->type == RPM_STRING_ARRAY_TYPE ) { unsigned n; char *str = (char *) G.map + tag->offset; printf("tag[%u] %08x type %08x offset %08x count %d '%s'\n", i, tag->tag, tag->type, tag->offset, tag->count, str ); for (n = 1; n < tag->count; n++) { str += strlen(str) + 1; printf("\t'%s'\n", str); } } i++; } } #else #define print_all_tags() ((void)0) #endif //usage:#define rpm_trivial_usage //usage: "-i PACKAGE.rpm; rpm -qp[ildc] PACKAGE.rpm" //usage:#define rpm_full_usage "\n\n" //usage: "Manipulate RPM packages\n" //usage: "\nCommands:" //usage: "\n -i Install package" //usage: "\n -qp Query package" //usage: "\n -qpi Show information" //usage: "\n -qpl List contents" //usage: "\n -qpd List documents" //usage: "\n -qpc List config files" /* RPM version 4.13.0.1: * Unlike -q, -i seems to imply -p: -i, -ip and -pi work the same. * OTOH, with -q order is important: "-piq FILE.rpm" works as -qp, not -qpi * (IOW: shows only package name, not package info). * "-iq ARG" works as -q: treats ARG as package name, not a file. * * "man rpm" on -l option and options implying it: * -l, --list List files in package. * -c, --configfiles List only configuration files (implies -l). * -d, --docfiles List only documentation files (implies -l). * -L, --licensefiles List only license files (implies -l). * --dump Dump file information as follows (implies -l): * path size mtime digest mode owner group isconfig isdoc rdev symlink * -s, --state Display the states of files in the package (implies -l). * The state of each file is one of normal, not installed, or replaced. * * Looks like we can switch to getopt32 here: in practice, people * do place -q first if they intend to use it (misinterpreting "-piq" wouldn't matter). */ int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int rpm_main(int argc, char **argv) { int opt, func = 0; G.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 (IOW: .rpm file, we are not querying RPMDB) */ 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 -l) */ func |= rpm_query_list; func |= rpm_query_list_doc; break; case 'c': /* List config files in a package (implies -l) */ func |= rpm_query_list; func |= rpm_query_list_config; break; default: bb_show_usage(); } } argv += optind; //argc -= optind; if (!argv[0]) { bb_show_usage(); } for (;;) { int rpm_fd; const char *source_rpm; rpm_fd = xopen(*argv, O_RDONLY); G.mytags = rpm_gettags(rpm_fd); if (!G.mytags) bb_error_msg_and_die("error reading rpm header from '%s'", *argv); print_all_tags(); source_rpm = rpm_getstr0(TAG_SOURCERPM); if (func & rpm_install) { /* -i (and not -qi) */ /* Backup any config files */ loop_through_files(TAG_BASENAMES, fileaction_dobackup); /* Extact the archive */ extract_cpio(rpm_fd, source_rpm); /* 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)) { /* -qp */ if (!(func & (rpm_query_info|rpm_query_list))) { /* If just a straight query, just give package name */ printf("%s-%s-%s\n", rpm_getstr0(TAG_NAME), rpm_getstr0(TAG_VERSION), rpm_getstr0(TAG_RELEASE)); } if (func & rpm_query_info) { /* Do the nice printout */ time_t bdate_time; struct tm *bdate_ptm; char bdatestring[50]; const char *p; printf("%-12s: %s\n", "Name" , rpm_getstr0(TAG_NAME)); /* TODO compat: add "Epoch" here */ printf("%-12s: %s\n", "Version" , rpm_getstr0(TAG_VERSION)); printf("%-12s: %s\n", "Release" , rpm_getstr0(TAG_RELEASE)); /* add "Architecture" */ /* printf("%-12s: %s\n", "Install Date", "(not installed)"); - we don't know */ printf("%-12s: %s\n", "Group" , rpm_getstr0(TAG_GROUP)); printf("%-12s: %d\n", "Size" , rpm_getint(TAG_SIZE, 0)); printf("%-12s: %s\n", "License" , rpm_getstr0(TAG_LICENSE)); /* add "Signature" */ printf("%-12s: %s\n", "Source RPM" , source_rpm ? source_rpm : "(none)"); bdate_time = rpm_getint(TAG_BUILDTIME, 0); bdate_ptm = localtime(&bdate_time); strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm); printf("%-12s: %s\n", "Build Date" , bdatestring); printf("%-12s: %s\n", "Build Host" , rpm_getstr0(TAG_BUILDHOST)); p = rpm_getstr0(TAG_PREFIXS); printf("%-12s: %s\n", "Relocations" , p ? p : "(not relocatable)"); /* add "Packager" */ p = rpm_getstr0(TAG_VENDOR); if (p) /* rpm 4.13.0.1 does not show "(none)" for Vendor: */ printf("%-12s: %s\n", "Vendor" , p); p = rpm_getstr0(TAG_URL); if (p) /* rpm 4.13.0.1 does not show "(none)"/"(null)" for URL: */ printf("%-12s: %s\n", "URL" , p); printf("%-12s: %s\n", "Summary" , rpm_getstr0(TAG_SUMMARY)); printf("Description :\n%s\n", rpm_getstr0(TAG_DESCRIPTION)); } 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)); } } } else { /* Unsupported (help text shows what we support) */ bb_show_usage(); } if (!*++argv) break; munmap(G.map, G.mapsize); free(G.mytags); close(rpm_fd); } return 0; }