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text data bss dec hex filename 677858 738 7236 685832 a7708 busybox_old 677804 738 7236 685778 a76d2 busybox_unstripped
399 lines
13 KiB
C
399 lines
13 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini rpm applet for busybox
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*
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* Copyright (C) 2001,2002 by Laurence Anderson
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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#include "unarchive.h"
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#define RPM_HEADER_MAGIC "\216\255\350"
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#define RPM_CHAR_TYPE 1
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#define RPM_INT8_TYPE 2
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#define RPM_INT16_TYPE 3
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#define RPM_INT32_TYPE 4
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/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
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#define RPM_STRING_TYPE 6
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#define RPM_BIN_TYPE 7
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#define RPM_STRING_ARRAY_TYPE 8
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#define RPM_I18NSTRING_TYPE 9
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#define TAG_NAME 1000
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#define TAG_VERSION 1001
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#define TAG_RELEASE 1002
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#define TAG_SUMMARY 1004
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#define TAG_DESCRIPTION 1005
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#define TAG_BUILDTIME 1006
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#define TAG_BUILDHOST 1007
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#define TAG_SIZE 1009
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#define TAG_VENDOR 1011
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#define TAG_LICENSE 1014
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#define TAG_PACKAGER 1015
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#define TAG_GROUP 1016
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#define TAG_URL 1020
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#define TAG_PREIN 1023
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#define TAG_POSTIN 1024
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#define TAG_FILEFLAGS 1037
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#define TAG_FILEUSERNAME 1039
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#define TAG_FILEGROUPNAME 1040
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#define TAG_SOURCERPM 1044
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#define TAG_PREINPROG 1085
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#define TAG_POSTINPROG 1086
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#define TAG_PREFIXS 1098
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#define TAG_DIRINDEXES 1116
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#define TAG_BASENAMES 1117
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#define TAG_DIRNAMES 1118
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#define RPMFILE_CONFIG (1 << 0)
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#define RPMFILE_DOC (1 << 1)
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enum rpm_functions_e {
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rpm_query = 1,
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rpm_install = 2,
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rpm_query_info = 4,
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rpm_query_package = 8,
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rpm_query_list = 16,
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rpm_query_list_doc = 32,
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rpm_query_list_config = 64
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};
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typedef struct {
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uint32_t tag; /* 4 byte tag */
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uint32_t type; /* 4 byte type */
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uint32_t offset; /* 4 byte offset */
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uint32_t count; /* 4 byte count */
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} rpm_index;
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static void *map;
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static rpm_index **mytags;
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static int tagcount;
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static void extract_cpio_gz(int fd);
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static rpm_index **rpm_gettags(int fd, int *num_tags);
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static int bsearch_rpmtag(const void *key, const void *item);
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static char *rpm_getstr(int tag, int itemindex);
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static int rpm_getint(int tag, int itemindex);
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static int rpm_getcount(int tag);
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static void fileaction_dobackup(char *filename, int fileref);
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static void fileaction_setowngrp(char *filename, int fileref);
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static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));
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int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int rpm_main(int argc, char **argv)
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{
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int opt = 0, func = 0, rpm_fd, offset;
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const int pagesize = getpagesize();
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while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
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switch (opt) {
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case 'i': /* First arg: Install mode, with q: Information */
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if (!func) func = rpm_install;
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else func |= rpm_query_info;
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break;
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case 'q': /* First arg: Query mode */
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if (func) bb_show_usage();
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func = rpm_query;
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break;
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case 'p': /* Query a package */
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func |= rpm_query_package;
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break;
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case 'l': /* List files in a package */
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func |= rpm_query_list;
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break;
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case 'd': /* List doc files in a package (implies list) */
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func |= rpm_query_list;
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func |= rpm_query_list_doc;
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break;
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case 'c': /* List config files in a package (implies list) */
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func |= rpm_query_list;
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func |= rpm_query_list_config;
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break;
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default:
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bb_show_usage();
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}
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}
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argv += optind;
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argc -= optind;
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if (!argc) bb_show_usage();
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while (*argv) {
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rpm_fd = xopen(*argv++, O_RDONLY);
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mytags = rpm_gettags(rpm_fd, &tagcount);
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if (!mytags)
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bb_error_msg_and_die("error reading rpm header");
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offset = xlseek(rpm_fd, 0, SEEK_CUR);
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/* Mimimum is one page */
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map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
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if (func & rpm_install) {
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/* Backup any config files */
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loop_through_files(TAG_BASENAMES, fileaction_dobackup);
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/* Extact the archive */
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extract_cpio_gz(rpm_fd);
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/* Set the correct file uid/gid's */
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loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
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}
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else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
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if (!(func & (rpm_query_info|rpm_query_list))) {
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/* If just a straight query, just give package name */
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printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
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}
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if (func & rpm_query_info) {
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/* Do the nice printout */
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time_t bdate_time;
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struct tm *bdate;
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char bdatestring[50];
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printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_PREFIXS, 0) ? rpm_getstr(TAG_PREFIXS, 0) : "(not relocateable)");
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printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_VENDOR, 0) ? rpm_getstr(TAG_VENDOR, 0) : "(none)");
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bdate_time = rpm_getint(TAG_BUILDTIME, 0);
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bdate = localtime((time_t *) &bdate_time);
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strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate);
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printf("Release : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring);
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printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0));
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printf("Group : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), rpm_getstr(TAG_SOURCERPM, 0));
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printf("Size : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0));
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printf("URL : %s\n", rpm_getstr(TAG_URL, 0));
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printf("Summary : %s\n", rpm_getstr(TAG_SUMMARY, 0));
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printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
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}
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if (func & rpm_query_list) {
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int count, it, flags;
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count = rpm_getcount(TAG_BASENAMES);
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for (it = 0; it < count; it++) {
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flags = rpm_getint(TAG_FILEFLAGS, it);
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switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
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case rpm_query_list_doc:
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if (!(flags & RPMFILE_DOC)) continue;
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break;
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case rpm_query_list_config:
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if (!(flags & RPMFILE_CONFIG)) continue;
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break;
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case rpm_query_list_doc|rpm_query_list_config:
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if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
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break;
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}
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printf("%s%s\n",
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rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
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rpm_getstr(TAG_BASENAMES, it));
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}
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}
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}
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free(mytags);
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}
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return 0;
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}
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static void extract_cpio_gz(int fd)
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{
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archive_handle_t *archive_handle;
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unsigned char magic[2];
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#if BB_MMU
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USE_DESKTOP(long long) int (*xformer)(int src_fd, int dst_fd);
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enum { xformer_prog = 0 };
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#else
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enum { xformer = 0 };
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const char *xformer_prog;
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#endif
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/* Initialize */
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archive_handle = init_handle();
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archive_handle->seek = seek_by_read;
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//archive_handle->action_header = header_list;
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archive_handle->action_data = data_extract_all;
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archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
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archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
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archive_handle->src_fd = fd;
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archive_handle->offset = 0;
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xread(archive_handle->src_fd, &magic, 2);
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#if BB_MMU
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xformer = unpack_gz_stream;
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#else
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xformer_prog = "gunzip";
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#endif
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if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
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if (ENABLE_FEATURE_RPM_BZ2
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&& (magic[0] == 0x42) && (magic[1] == 0x5a)) {
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#if BB_MMU
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xformer = unpack_bz2_stream;
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#else
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xformer_prog = "bunzip2";
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#endif
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/* We can do better, need modifying unpack_bz2_stream to not require
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* first 2 bytes. Not very hard to do... I mean, TODO :) */
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xlseek(archive_handle->src_fd, -2, SEEK_CUR);
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} else
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bb_error_msg_and_die("no gzip"
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USE_FEATURE_RPM_BZ2("/bzip")
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" magic");
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} else {
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#if !BB_MMU
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/* NOMMU version of open_transformer execs an external unzipper that should
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* have the file position at the start of the file */
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xlseek(archive_handle->src_fd, 0, SEEK_SET);
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#endif
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}
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xchdir("/"); /* Install RPM's to root */
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archive_handle->src_fd = open_transformer(archive_handle->src_fd, xformer, xformer_prog);
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archive_handle->offset = 0;
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while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
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continue;
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}
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static rpm_index **rpm_gettags(int fd, int *num_tags)
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{
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/* We should never need mode than 200, and realloc later */
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rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *));
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int pass, tagindex = 0;
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xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
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/* 1st pass is the signature headers, 2nd is the main stuff */
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for (pass = 0; pass < 2; pass++) {
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struct {
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char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
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uint8_t version; /* 1 byte version number */
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uint32_t reserved; /* 4 bytes reserved */
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uint32_t entries; /* Number of entries in header (4 bytes) */
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uint32_t size; /* Size of store (4 bytes) */
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} header;
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rpm_index *tmpindex;
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int storepos;
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xread(fd, &header, sizeof(header));
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if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0)
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return NULL; /* Invalid magic */
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if (header.version != 1)
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return NULL; /* This program only supports v1 headers */
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header.size = ntohl(header.size);
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header.entries = ntohl(header.entries);
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storepos = xlseek(fd,0,SEEK_CUR) + header.entries * 16;
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while (header.entries--) {
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tmpindex = tags[tagindex++] = xmalloc(sizeof(rpm_index));
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xread(fd, tmpindex, sizeof(rpm_index));
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tmpindex->tag = ntohl(tmpindex->tag);
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tmpindex->type = ntohl(tmpindex->type);
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tmpindex->count = ntohl(tmpindex->count);
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tmpindex->offset = storepos + ntohl(tmpindex->offset);
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if (pass==0)
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tmpindex->tag -= 743;
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}
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xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
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/* Skip padding to 8 byte boundary after reading signature headers */
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if (pass==0)
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xlseek(fd, (8 - (xlseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR);
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}
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tags = xrealloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */
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*num_tags = tagindex;
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return tags; /* All done, leave the file at the start of the gzipped cpio archive */
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}
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static int bsearch_rpmtag(const void *key, const void *item)
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{
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int *tag = (int *)key;
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rpm_index **tmp = (rpm_index **) item;
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return (*tag - tmp[0]->tag);
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}
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static int rpm_getcount(int tag)
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{
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rpm_index **found;
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found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
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if (!found)
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return 0;
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return found[0]->count;
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}
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static char *rpm_getstr(int tag, int itemindex)
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{
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rpm_index **found;
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found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
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if (!found || itemindex >= found[0]->count)
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return NULL;
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if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) {
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int n;
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char *tmpstr = (char *) (map + found[0]->offset);
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for (n=0; n < itemindex; n++)
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tmpstr = tmpstr + strlen(tmpstr) + 1;
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return tmpstr;
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}
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return NULL;
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}
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static int rpm_getint(int tag, int itemindex)
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{
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rpm_index **found;
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int *tmpint; /* NB: using int8_t* would be easier to code */
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/* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
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* it's ok to ignore it because tag won't be used as a pointer */
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found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
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if (!found || itemindex >= found[0]->count)
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return -1;
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tmpint = (int *) (map + found[0]->offset);
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if (found[0]->type == RPM_INT32_TYPE) {
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tmpint = (int *) ((char *) tmpint + itemindex*4);
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/*return ntohl(*tmpint);*/
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/* int can be != int32_t */
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return ntohl(*(int32_t*)tmpint);
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}
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if (found[0]->type == RPM_INT16_TYPE) {
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tmpint = (int *) ((char *) tmpint + itemindex*2);
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/* ??? read int, and THEN ntohs() it?? */
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/*return ntohs(*tmpint);*/
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return ntohs(*(int16_t*)tmpint);
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}
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if (found[0]->type == RPM_INT8_TYPE) {
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tmpint = (int *) ((char *) tmpint + itemindex);
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/* ??? why we don't read byte here??? */
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/*return ntohs(*tmpint);*/
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return *(int8_t*)tmpint;
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}
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return -1;
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}
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static void fileaction_dobackup(char *filename, int fileref)
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{
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struct stat oldfile;
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int stat_res;
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char *newname;
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if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
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/* Only need to backup config files */
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stat_res = lstat(filename, &oldfile);
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if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
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/* File already exists - really should check MD5's etc to see if different */
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newname = xasprintf("%s.rpmorig", filename);
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copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
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remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
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free(newname);
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}
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}
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}
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static void fileaction_setowngrp(char *filename, int fileref)
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{
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int uid, gid;
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uid = xuname2uid(rpm_getstr(TAG_FILEUSERNAME, fileref));
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gid = xgroup2gid(rpm_getstr(TAG_FILEGROUPNAME, fileref));
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chown(filename, uid, gid);
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}
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static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
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{
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int count = 0;
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while (rpm_getstr(filetag, count)) {
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char* filename = xasprintf("%s%s",
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rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
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rpm_getstr(TAG_BASENAMES, count));
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fileaction(filename, count++);
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free(filename);
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}
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}
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