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-rw-r--r--archival/rpm.c351
1 files changed, 351 insertions, 0 deletions
diff --git a/archival/rpm.c b/archival/rpm.c
new file mode 100644
index 0000000..ee5087f
--- /dev/null
+++ b/archival/rpm.c
@@ -0,0 +1,351 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini rpm applet for busybox
+ *
+ * Copyright (C) 2001,2002 by Laurence Anderson
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "busybox.h"
+#include "unarchive.h"
+#include <stdio.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <netinet/in.h> /* For ntohl & htonl function */
+#include <string.h> /* For strncmp */
+#include <sys/mman.h> /* For mmap */
+#include <time.h> /* For ctime */
+
+#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 {
+ u_int32_t tag; /* 4 byte tag */
+ u_int32_t type; /* 4 byte type */
+ u_int32_t offset; /* 4 byte offset */
+ u_int32_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 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:
+ show_usage();
+ }
+ }
+
+ if (optind == argc) 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_SHARED, 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->read = read_gz;
+ 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_all(archive_handle->src_fd, &magic, 2);
+ if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
+ error_msg_and_die("Invalid gzip magic");
+ }
+ check_header_gzip(archive_handle->src_fd);
+ chdir("/"); // Install RPM's to root
+
+ GZ_gzReadOpen(archive_handle->src_fd, 0, 0);
+ while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
+ GZ_gzReadClose();
+
+ check_trailer_gzip(archive_handle->src_fd);
+}
+
+
+rpm_index **rpm_gettags(int fd, int *num_tags)
+{
+ rpm_index **tags = calloc(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 */
+ u_int8_t version; /* 1 byte version number */
+ u_int32_t reserved; /* 4 bytes reserved */
+ u_int32_t entries; /* Number of entries in header (4 bytes) */
+ u_int32_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++] = malloc(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)
+{
+ rpm_index **tmp = (rpm_index **) item;
+ return ((int) key - tmp[0]->tag);
+}
+
+int rpm_getcount(int tag)
+{
+ rpm_index **found;
+ found = bsearch((void *) 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((void *) 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;
+ found = bsearch((void *) 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 = my_getpwnam(rpm_getstring(RPMTAG_FILEUSERNAME, fileref));
+ gid = my_getgrnam(rpm_getstring(RPMTAG_FILEGROUPNAME, fileref));
+ chown (filename, uid, gid);
+}
+
+void fileaction_list(char *filename, int fileref)
+{
+ printf("%s\n", filename);
+}
+
+void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
+{
+ int count = 0;
+ char *filename, *tmp_dirname, *tmp_basename;
+ while (rpm_getstring(filetag, count)) {
+ tmp_dirname = rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES, count)); /* 1st put on the directory */
+ tmp_basename = rpm_getstring(RPMTAG_BASENAMES, count);
+ filename = xmalloc(strlen(tmp_basename) + strlen(tmp_dirname) + 1);
+ strcpy(filename, tmp_dirname); /* First the directory name */
+ strcat(filename, tmp_basename); /* then the filename */
+ fileaction(filename, count++);
+ free(filename);
+ }
+}
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