| /* 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; |
| |
| void extract_cpio_gz(int fd); |
| rpm_index **rpm_gettags(int fd, int *num_tags); |
| int bsearch_rpmtag(const void *key, const void *item); |
| char *rpm_getstring(int tag, int itemindex); |
| int rpm_getint(int tag, int itemindex); |
| int rpm_getcount(int tag); |
| void exec_script(int progtag, int datatag, char *prefix); |
| void fileaction_dobackup(char *filename, int fileref); |
| void fileaction_setowngrp(char *filename, int fileref); |
| void fileaction_list(char *filename, int itemno); |
| 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; |
| } |
| |
| 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); |
| } |
| |
| |
| 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 */ |
| } |
| |
| int bsearch_rpmtag(const void *key, const void *item) |
| { |
| int *tag = (int *)key; |
| rpm_index **tmp = (rpm_index **) item; |
| return (*tag - tmp[0]->tag); |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| 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 = xstrdup(filename); |
| newname = strcat(newname, ".rpmorig"); |
| copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS); |
| remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE); |
| free(newname); |
| } |
| } |
| } |
| |
| 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); |
| } |
| |
| void fileaction_list(char *filename, int ATTRIBUTE_UNUSED fileref) |
| { |
| printf("%s\n", filename); |
| } |
| |
| 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); |
| } |
| } |