diff options
| -rw-r--r-- | archival/rpm.c | 289 |
1 files changed, 168 insertions, 121 deletions
diff --git a/archival/rpm.c b/archival/rpm.c index 2ef7232..c0a1dee 100644 --- a/archival/rpm.c +++ b/archival/rpm.c @@ -10,44 +10,44 @@ #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 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) +#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, @@ -73,7 +73,7 @@ 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 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); @@ -83,28 +83,29 @@ static void loop_through_files(int filetag, void (*fileaction)(char *filename, i 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; + 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(); + case 'q': /* First arg: Query mode */ + if (func) bb_show_usage(); + func = rpm_query; break; - case 'p': // Query a package + case 'p': /* Query a package */ func |= rpm_query_package; break; - case 'l': // List files in a package + case 'l': /* List files in a package */ func |= rpm_query_list; break; - case 'd': // List doc files in a package (implies list) + 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) + case 'c': /* List config files in a package (implies list) */ func |= rpm_query_list; func |= rpm_query_list_config; break; @@ -112,57 +113,73 @@ int rpm_main(int argc, char **argv) bb_show_usage(); } } + argv += optind; + argc -= optind; + if (!argc) 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 (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)); + /* 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_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); + 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_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)); + 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(RPMTAG_BASENAMES); + count = rpm_getcount(TAG_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; + 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_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES, it)), rpm_getstring(RPMTAG_BASENAMES, it)); + printf("%s%s\n", + rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)), + rpm_getstr(TAG_BASENAMES, it)); } } } - optind++; - free (mytags); + free(mytags); } return 0; } @@ -186,21 +203,25 @@ static void extract_cpio_gz(int fd) { bb_error_msg_and_die("invalid gzip magic"); } check_header_gzip(archive_handle->src_fd); - xchdir("/"); // Install RPM's to root + 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); + while (get_header_cpio(archive_handle) == EXIT_SUCCESS) + /* loop */; } 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 */ + /* We should never need mode than 200, and realloc later */ + rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *)); 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 */ + 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 */ @@ -211,24 +232,31 @@ static rpm_index **rpm_gettags(int fd, int *num_tags) 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 */ + 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 = lseek(fd,0,SEEK_CUR) + header.entries * 16; + storepos = xlseek(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); + xread(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; + 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 */ + 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 = realloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */ + tags = xrealloc(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 */ } @@ -244,42 +272,59 @@ 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; + if (!found) + return 0; + return found[0]->count; } -static char *rpm_getstring(int tag, int itemindex) +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 || 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; + for (n=0; n < itemindex; n++) + tmpstr = tmpstr + strlen(tmpstr) + 1; return tmpstr; - } else return NULL; + } + return NULL; } static int rpm_getint(int tag, int itemindex) { rpm_index **found; - int n, *tmpint; + 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; + 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; + 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) @@ -287,9 +332,11 @@ 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 */ + 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); @@ -301,18 +348,18 @@ static void fileaction_dobackup(char *filename, int fileref) 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)); + uid = bb_xgetpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref)); + gid = bb_xgetgrnam(rpm_getstr(TAG_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)); + 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); } |