[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini rpm applet for busybox
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| 4 | *
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| 5 | * Copyright (C) 2001,2002 by Laurence Anderson
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| 6 | *
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| 7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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| 8 | */
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| 9 |
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[1765] | 10 | #include "libbb.h"
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[821] | 11 | #include "unarchive.h"
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| 12 |
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[1765] | 13 | #define RPM_HEADER_MAGIC "\216\255\350"
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| 14 | #define RPM_CHAR_TYPE 1
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| 15 | #define RPM_INT8_TYPE 2
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| 16 | #define RPM_INT16_TYPE 3
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| 17 | #define RPM_INT32_TYPE 4
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| 18 | /* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
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| 19 | #define RPM_STRING_TYPE 6
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| 20 | #define RPM_BIN_TYPE 7
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| 21 | #define RPM_STRING_ARRAY_TYPE 8
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| 22 | #define RPM_I18NSTRING_TYPE 9
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[821] | 23 |
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[1765] | 24 | #define TAG_NAME 1000
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| 25 | #define TAG_VERSION 1001
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| 26 | #define TAG_RELEASE 1002
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| 27 | #define TAG_SUMMARY 1004
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| 28 | #define TAG_DESCRIPTION 1005
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| 29 | #define TAG_BUILDTIME 1006
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| 30 | #define TAG_BUILDHOST 1007
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| 31 | #define TAG_SIZE 1009
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| 32 | #define TAG_VENDOR 1011
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| 33 | #define TAG_LICENSE 1014
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| 34 | #define TAG_PACKAGER 1015
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| 35 | #define TAG_GROUP 1016
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| 36 | #define TAG_URL 1020
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| 37 | #define TAG_PREIN 1023
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| 38 | #define TAG_POSTIN 1024
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| 39 | #define TAG_FILEFLAGS 1037
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| 40 | #define TAG_FILEUSERNAME 1039
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| 41 | #define TAG_FILEGROUPNAME 1040
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| 42 | #define TAG_SOURCERPM 1044
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| 43 | #define TAG_PREINPROG 1085
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| 44 | #define TAG_POSTINPROG 1086
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| 45 | #define TAG_PREFIXS 1098
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| 46 | #define TAG_DIRINDEXES 1116
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| 47 | #define TAG_BASENAMES 1117
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| 48 | #define TAG_DIRNAMES 1118
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| 49 | #define RPMFILE_CONFIG (1 << 0)
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| 50 | #define RPMFILE_DOC (1 << 1)
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[821] | 51 |
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| 52 | enum rpm_functions_e {
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| 53 | rpm_query = 1,
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| 54 | rpm_install = 2,
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| 55 | rpm_query_info = 4,
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| 56 | rpm_query_package = 8,
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| 57 | rpm_query_list = 16,
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| 58 | rpm_query_list_doc = 32,
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| 59 | rpm_query_list_config = 64
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| 60 | };
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| 61 |
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| 62 | typedef struct {
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| 63 | uint32_t tag; /* 4 byte tag */
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| 64 | uint32_t type; /* 4 byte type */
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| 65 | uint32_t offset; /* 4 byte offset */
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| 66 | uint32_t count; /* 4 byte count */
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| 67 | } rpm_index;
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| 68 |
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| 69 | static void *map;
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| 70 | static rpm_index **mytags;
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| 71 | static int tagcount;
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| 72 |
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[1765] | 73 | static void extract_cpio_gz(int fd);
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| 74 | static rpm_index **rpm_gettags(int fd, int *num_tags);
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| 75 | static int bsearch_rpmtag(const void *key, const void *item);
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| 76 | static char *rpm_getstr(int tag, int itemindex);
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| 77 | static int rpm_getint(int tag, int itemindex);
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| 78 | static int rpm_getcount(int tag);
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| 79 | static void fileaction_dobackup(char *filename, int fileref);
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| 80 | static void fileaction_setowngrp(char *filename, int fileref);
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| 81 | static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));
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[821] | 82 |
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[1765] | 83 | int rpm_main(int argc, char **argv);
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[821] | 84 | int rpm_main(int argc, char **argv)
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| 85 | {
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| 86 | int opt = 0, func = 0, rpm_fd, offset;
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[1765] | 87 | const int pagesize = getpagesize();
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[821] | 88 |
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| 89 | while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
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| 90 | switch (opt) {
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[1765] | 91 | case 'i': /* First arg: Install mode, with q: Information */
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| 92 | if (!func) func = rpm_install;
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[821] | 93 | else func |= rpm_query_info;
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| 94 | break;
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[1765] | 95 | case 'q': /* First arg: Query mode */
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| 96 | if (func) bb_show_usage();
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| 97 | func = rpm_query;
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[821] | 98 | break;
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[1765] | 99 | case 'p': /* Query a package */
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[821] | 100 | func |= rpm_query_package;
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| 101 | break;
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[1765] | 102 | case 'l': /* List files in a package */
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[821] | 103 | func |= rpm_query_list;
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| 104 | break;
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[1765] | 105 | case 'd': /* List doc files in a package (implies list) */
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[821] | 106 | func |= rpm_query_list;
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| 107 | func |= rpm_query_list_doc;
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| 108 | break;
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[1765] | 109 | case 'c': /* List config files in a package (implies list) */
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[821] | 110 | func |= rpm_query_list;
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| 111 | func |= rpm_query_list_config;
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| 112 | break;
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| 113 | default:
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| 114 | bb_show_usage();
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| 115 | }
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| 116 | }
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[1765] | 117 | argv += optind;
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| 118 | argc -= optind;
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| 119 | if (!argc) bb_show_usage();
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[821] | 120 |
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[1765] | 121 | while (*argv) {
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| 122 | rpm_fd = xopen(*argv++, O_RDONLY);
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| 123 | mytags = rpm_gettags(rpm_fd, &tagcount);
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| 124 | if (!mytags)
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| 125 | bb_error_msg_and_die("error reading rpm header");
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| 126 | offset = xlseek(rpm_fd, 0, SEEK_CUR);
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| 127 | /* Mimimum is one page */
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| 128 | map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
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| 129 |
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[821] | 130 | if (func & rpm_install) {
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[1765] | 131 | /* Backup any config files */
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| 132 | loop_through_files(TAG_BASENAMES, fileaction_dobackup);
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| 133 | /* Extact the archive */
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| 134 | extract_cpio_gz(rpm_fd);
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| 135 | /* Set the correct file uid/gid's */
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| 136 | loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
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| 137 | }
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| 138 | else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
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| 139 | if (!(func & (rpm_query_info|rpm_query_list))) {
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| 140 | /* If just a straight query, just give package name */
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| 141 | printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
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[821] | 142 | }
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| 143 | if (func & rpm_query_info) {
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| 144 | /* Do the nice printout */
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| 145 | time_t bdate_time;
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| 146 | struct tm *bdate;
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| 147 | char bdatestring[50];
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[1765] | 148 | 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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| 149 | 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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| 150 | bdate_time = rpm_getint(TAG_BUILDTIME, 0);
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[821] | 151 | bdate = localtime((time_t *) &bdate_time);
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| 152 | strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate);
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[1765] | 153 | printf("Release : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring);
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| 154 | printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0));
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| 155 | printf("Group : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), rpm_getstr(TAG_SOURCERPM, 0));
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| 156 | printf("Size : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0));
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| 157 | printf("URL : %s\n", rpm_getstr(TAG_URL, 0));
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| 158 | printf("Summary : %s\n", rpm_getstr(TAG_SUMMARY, 0));
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| 159 | printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
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[821] | 160 | }
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| 161 | if (func & rpm_query_list) {
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| 162 | int count, it, flags;
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[1765] | 163 | count = rpm_getcount(TAG_BASENAMES);
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[821] | 164 | for (it = 0; it < count; it++) {
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[1765] | 165 | flags = rpm_getint(TAG_FILEFLAGS, it);
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| 166 | switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
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| 167 | case rpm_query_list_doc:
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| 168 | if (!(flags & RPMFILE_DOC)) continue;
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| 169 | break;
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| 170 | case rpm_query_list_config:
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| 171 | if (!(flags & RPMFILE_CONFIG)) continue;
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| 172 | break;
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| 173 | case rpm_query_list_doc|rpm_query_list_config:
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| 174 | if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
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| 175 | break;
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[821] | 176 | }
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[1765] | 177 | printf("%s%s\n",
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| 178 | rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
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| 179 | rpm_getstr(TAG_BASENAMES, it));
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[821] | 180 | }
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| 181 | }
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| 182 | }
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[1765] | 183 | free(mytags);
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[821] | 184 | }
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| 185 | return 0;
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| 186 | }
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| 187 |
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[1765] | 188 | static void extract_cpio_gz(int fd)
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| 189 | {
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[821] | 190 | archive_handle_t *archive_handle;
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| 191 | unsigned char magic[2];
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[1765] | 192 | #if BB_MMU
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| 193 | USE_DESKTOP(long long) int (*xformer)(int src_fd, int dst_fd);
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| 194 | enum { xformer_prog = 0 };
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| 195 | #else
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| 196 | enum { xformer = 0 };
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| 197 | const char *xformer_prog;
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| 198 | #endif
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[821] | 199 |
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[1765] | 200 | /* Initialize */
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[821] | 201 | archive_handle = init_handle();
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[1765] | 202 | archive_handle->seek = seek_by_read;
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[821] | 203 | //archive_handle->action_header = header_list;
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| 204 | archive_handle->action_data = data_extract_all;
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| 205 | archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
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| 206 | archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
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| 207 | archive_handle->src_fd = fd;
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| 208 | archive_handle->offset = 0;
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| 209 |
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[1765] | 210 | xread(archive_handle->src_fd, &magic, 2);
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| 211 | #if BB_MMU
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| 212 | xformer = unpack_gz_stream;
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| 213 | #else
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| 214 | xformer_prog = "gunzip";
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| 215 | #endif
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[821] | 216 | if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
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[1765] | 217 | if (ENABLE_FEATURE_RPM_BZ2
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| 218 | && (magic[0] == 0x42) && (magic[1] == 0x5a)) {
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| 219 | #if BB_MMU
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| 220 | xformer = unpack_bz2_stream;
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| 221 | #else
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| 222 | xformer_prog = "bunzip2";
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| 223 | #endif
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| 224 | /* We can do better, need modifying unpack_bz2_stream to not require
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| 225 | * first 2 bytes. Not very hard to do... I mean, TODO :) */
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| 226 | xlseek(archive_handle->src_fd, -2, SEEK_CUR);
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| 227 | } else
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| 228 | bb_error_msg_and_die("no gzip"
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| 229 | USE_FEATURE_RPM_BZ2("/bzip")
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| 230 | " magic");
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| 231 | } else {
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| 232 | check_header_gzip_or_die(archive_handle->src_fd);
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| 233 | #if !BB_MMU
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| 234 | /* NOMMU version of open_transformer execs an external unzipper that should
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| 235 | * have the file position at the start of the file */
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| 236 | xlseek(archive_handle->src_fd, 0, SEEK_SET);
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| 237 | #endif
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[821] | 238 | }
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| 239 |
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[1765] | 240 | xchdir("/"); /* Install RPM's to root */
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| 241 | archive_handle->src_fd = open_transformer(archive_handle->src_fd, xformer, xformer_prog, xformer_prog, "-cf", "-", NULL);
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[821] | 242 | archive_handle->offset = 0;
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[1765] | 243 | while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
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| 244 | continue;
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[821] | 245 | }
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| 246 |
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| 247 |
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[1765] | 248 | static rpm_index **rpm_gettags(int fd, int *num_tags)
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[821] | 249 | {
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[1765] | 250 | /* We should never need mode than 200, and realloc later */
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| 251 | rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *));
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[821] | 252 | int pass, tagindex = 0;
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| 253 |
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[1765] | 254 | xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
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| 255 |
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| 256 | /* 1st pass is the signature headers, 2nd is the main stuff */
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| 257 | for (pass = 0; pass < 2; pass++) {
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[821] | 258 | struct {
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| 259 | char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
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| 260 | uint8_t version; /* 1 byte version number */
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| 261 | uint32_t reserved; /* 4 bytes reserved */
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| 262 | uint32_t entries; /* Number of entries in header (4 bytes) */
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| 263 | uint32_t size; /* Size of store (4 bytes) */
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| 264 | } header;
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| 265 | rpm_index *tmpindex;
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| 266 | int storepos;
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| 267 |
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[1765] | 268 | xread(fd, &header, sizeof(header));
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| 269 | if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0)
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| 270 | return NULL; /* Invalid magic */
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| 271 | if (header.version != 1)
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| 272 | return NULL; /* This program only supports v1 headers */
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[821] | 273 | header.size = ntohl(header.size);
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| 274 | header.entries = ntohl(header.entries);
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[1765] | 275 | storepos = xlseek(fd,0,SEEK_CUR) + header.entries * 16;
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[821] | 276 |
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| 277 | while (header.entries--) {
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| 278 | tmpindex = tags[tagindex++] = xmalloc(sizeof(rpm_index));
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[1765] | 279 | xread(fd, tmpindex, sizeof(rpm_index));
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| 280 | tmpindex->tag = ntohl(tmpindex->tag);
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| 281 | tmpindex->type = ntohl(tmpindex->type);
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| 282 | tmpindex->count = ntohl(tmpindex->count);
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[821] | 283 | tmpindex->offset = storepos + ntohl(tmpindex->offset);
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[1765] | 284 | if (pass==0)
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| 285 | tmpindex->tag -= 743;
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[821] | 286 | }
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[1765] | 287 | xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
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| 288 | /* Skip padding to 8 byte boundary after reading signature headers */
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| 289 | if (pass==0)
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| 290 | xlseek(fd, (8 - (xlseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR);
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[821] | 291 | }
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[1765] | 292 | tags = xrealloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */
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[821] | 293 | *num_tags = tagindex;
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| 294 | return tags; /* All done, leave the file at the start of the gzipped cpio archive */
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| 295 | }
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| 296 |
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[1765] | 297 | static int bsearch_rpmtag(const void *key, const void *item)
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[821] | 298 | {
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| 299 | int *tag = (int *)key;
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| 300 | rpm_index **tmp = (rpm_index **) item;
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| 301 | return (*tag - tmp[0]->tag);
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| 302 | }
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| 303 |
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[1765] | 304 | static int rpm_getcount(int tag)
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[821] | 305 | {
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| 306 | rpm_index **found;
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| 307 | found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
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[1765] | 308 | if (!found)
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| 309 | return 0;
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| 310 | return found[0]->count;
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[821] | 311 | }
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| 312 |
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[1765] | 313 | static char *rpm_getstr(int tag, int itemindex)
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[821] | 314 | {
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| 315 | rpm_index **found;
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| 316 | found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
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[1765] | 317 | if (!found || itemindex >= found[0]->count)
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| 318 | return NULL;
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[821] | 319 | if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) {
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| 320 | int n;
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| 321 | char *tmpstr = (char *) (map + found[0]->offset);
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[1765] | 322 | for (n=0; n < itemindex; n++)
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| 323 | tmpstr = tmpstr + strlen(tmpstr) + 1;
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[821] | 324 | return tmpstr;
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[1765] | 325 | }
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| 326 | return NULL;
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[821] | 327 | }
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| 328 |
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[1765] | 329 | static int rpm_getint(int tag, int itemindex)
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[821] | 330 | {
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| 331 | rpm_index **found;
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[1765] | 332 | int *tmpint; /* NB: using int8_t* would be easier to code */
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| 333 |
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[821] | 334 | /* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
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| 335 | * it's ok to ignore it because tag won't be used as a pointer */
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| 336 | found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
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[1765] | 337 | if (!found || itemindex >= found[0]->count)
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| 338 | return -1;
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| 339 |
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[821] | 340 | tmpint = (int *) (map + found[0]->offset);
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[1765] | 341 |
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[821] | 342 | if (found[0]->type == RPM_INT32_TYPE) {
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[1765] | 343 | tmpint = (int *) ((char *) tmpint + itemindex*4);
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| 344 | /*return ntohl(*tmpint);*/
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| 345 | /* int can be != int32_t */
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| 346 | return ntohl(*(int32_t*)tmpint);
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| 347 | }
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| 348 | if (found[0]->type == RPM_INT16_TYPE) {
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| 349 | tmpint = (int *) ((char *) tmpint + itemindex*2);
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| 350 | /* ??? read int, and THEN ntohs() it?? */
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| 351 | /*return ntohs(*tmpint);*/
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| 352 | return ntohs(*(int16_t*)tmpint);
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| 353 | }
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| 354 | if (found[0]->type == RPM_INT8_TYPE) {
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| 355 | tmpint = (int *) ((char *) tmpint + itemindex);
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| 356 | /* ??? why we don't read byte here??? */
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| 357 | /*return ntohs(*tmpint);*/
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| 358 | return *(int8_t*)tmpint;
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| 359 | }
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| 360 | return -1;
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[821] | 361 | }
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| 362 |
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[1765] | 363 | static void fileaction_dobackup(char *filename, int fileref)
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[821] | 364 | {
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| 365 | struct stat oldfile;
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| 366 | int stat_res;
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| 367 | char *newname;
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[1765] | 368 | if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
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| 369 | /* Only need to backup config files */
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| 370 | stat_res = lstat(filename, &oldfile);
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| 371 | if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
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| 372 | /* File already exists - really should check MD5's etc to see if different */
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| 373 | newname = xasprintf("%s.rpmorig", filename);
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[821] | 374 | copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
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| 375 | remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
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| 376 | free(newname);
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| 377 | }
|
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| 378 | }
|
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| 379 | }
|
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| 380 |
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[1765] | 381 | static void fileaction_setowngrp(char *filename, int fileref)
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[821] | 382 | {
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| 383 | int uid, gid;
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[1765] | 384 | uid = xuname2uid(rpm_getstr(TAG_FILEUSERNAME, fileref));
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| 385 | gid = xgroup2gid(rpm_getstr(TAG_FILEGROUPNAME, fileref));
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| 386 | chown(filename, uid, gid);
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[821] | 387 | }
|
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| 388 |
|
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[1765] | 389 | static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
|
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[821] | 390 | {
|
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| 391 | int count = 0;
|
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[1765] | 392 | while (rpm_getstr(filetag, count)) {
|
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| 393 | char* filename = xasprintf("%s%s",
|
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| 394 | rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
|
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| 395 | rpm_getstr(TAG_BASENAMES, count));
|
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[821] | 396 | fileaction(filename, count++);
|
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| 397 | free(filename);
|
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| 398 | }
|
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| 399 | }
|
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