busybox/archival/rpm.c

/* vi: set sw=4 ts=4: */
/*
 * Mini rpm applet for busybox
 *
 * Copyright (C) 2001,2002 by Laurence Anderson
 *
 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */

#include "libbb.h"
#include "unarchive.h"
#include "rpm.h"

#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 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,
	rpm_install = 2,
	rpm_query_info = 4,
	rpm_query_package = 8,
	rpm_query_list = 16,
	rpm_query_list_doc = 32,
	rpm_query_list_config = 64
};

typedef struct {
	uint32_t tag; /* 4 byte tag */
	uint32_t type; /* 4 byte type */
	uint32_t offset; /* 4 byte offset */
	uint32_t count; /* 4 byte count */
} rpm_index;

static void *map;
static rpm_index **mytags;
static int tagcount;

static void extract_cpio(int fd, const char *source_rpm);
static rpm_index **rpm_gettags(int fd, int *num_tags);
static int bsearch_rpmtag(const void *key, const void *item);
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);
static void fileaction_setowngrp(char *filename, int fileref);
static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));

int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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;
			else func |= rpm_query_info;
			break;
		case 'q': /* First arg: Query mode */
			if (func) bb_show_usage();
			func = rpm_query;
			break;
		case 'p': /* Query a package */
			func |= rpm_query_package;
			break;
		case 'l': /* List files in a package */
			func |= rpm_query_list;
			break;
		case 'd': /* List doc files in a package (implies list) */
			func |= rpm_query_list;
			func |= rpm_query_list_doc;
			break;
		case 'c': /* List config files in a package (implies list) */
			func |= rpm_query_list;
			func |= rpm_query_list_config;
			break;
		default:
			bb_show_usage();
		}
	}
	argv += optind;
	//argc -= optind;
	if (!argv[0]) {
		bb_show_usage();
	}

	while (*argv) {
		const char *source_rpm;

		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);

		source_rpm = rpm_getstr(TAG_SOURCERPM, 0);

		if (func & rpm_install) {
			/* Backup any config files */
			loop_through_files(TAG_BASENAMES, fileaction_dobackup);
			/* Extact the archive */
			extract_cpio(rpm_fd, source_rpm);
			/* 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_ptm;
				char bdatestring[50];
				const char *p;

				p = rpm_getstr(TAG_PREFIXS, 0);
				if (!p) p = "(not relocateable)";
				printf("Name        : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), p);
				p = rpm_getstr(TAG_VENDOR, 0);
				if (!p) p = "(none)";
				printf("Version     : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), p);
				bdate_time = rpm_getint(TAG_BUILDTIME, 0);
				bdate_ptm = localtime(&bdate_time);
				strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
				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), source_rpm);
				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(TAG_BASENAMES);
				for (it = 0; it < count; it++) {
					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_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
						rpm_getstr(TAG_BASENAMES, it));
				}
			}
		}
		free(mytags);
	}
	return 0;
}

static void extract_cpio(int fd, const char *source_rpm)
{
	archive_handle_t *archive_handle;

	if (source_rpm != NULL) {
		/* Binary rpm (it was built from some SRPM), install to root */
		xchdir("/");
	} /* else: SRPM, install to current dir */

	/* Initialize */
	archive_handle = init_handle();
	archive_handle->seek = seek_by_read;
	archive_handle->action_data = data_extract_all;
#if 0 /* For testing (rpm -i only lists the files in internal cpio): */
	archive_handle->action_header = header_list;
	archive_handle->action_data = data_skip;
#endif
	archive_handle->ah_flags = ARCHIVE_RESTORE_DATE | ARCHIVE_CREATE_LEADING_DIRS
		/* compat: overwrite existing files.
		 * try "rpm -i foo.src.rpm" few times in a row -
		 * standard rpm will not complain.
		 * (TODO? real rpm creates "file;1234" and then renames it) */
		| ARCHIVE_UNLINK_OLD;
	archive_handle->src_fd = fd;
	/*archive_handle->offset = 0; - init_handle() did it */

	setup_unzip_on_fd(archive_handle->src_fd /*, fail_if_not_detected: 1*/);
	while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
		continue;
}

static rpm_index **rpm_gettags(int fd, int *num_tags)
{
	/* We should never need more than 200 (shrink via realloc later) */
	rpm_index **tags = xzalloc(200 * sizeof(tags[0]));
	int pass, tagindex = 0;

	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 rpm_header header;
		rpm_index *tmpindex;
		int storepos;

		xread(fd, &header, sizeof(header));
		if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER))
			return NULL; /* Invalid magic, or not version 1 */
		header.size = ntohl(header.size);
		header.entries = ntohl(header.entries);
		storepos = xlseek(fd, 0, SEEK_CUR) + header.entries * 16;

		while (header.entries--) {
			tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex));
			xread(fd, tmpindex, sizeof(*tmpindex));
			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;
		}
		storepos = xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
		/* Skip padding to 8 byte boundary after reading signature headers */
		if (pass == 0)
			xlseek(fd, (-storepos) & 0x7, SEEK_CUR);
	}
	/* realloc tags to save space */
	tags = xrealloc(tags, tagindex * sizeof(tags[0]));
	*num_tags = tagindex;
	/* All done, leave the file at the start of the gzipped cpio archive */
	return tags;
}

static int bsearch_rpmtag(const void *key, const void *item)
{
	int *tag = (int *)key;
	rpm_index **tmp = (rpm_index **) item;
	return (*tag - tmp[0]->tag);
}

static int rpm_getcount(int tag)
{
	rpm_index **found;
	found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
	if (!found)
		return 0;
	return found[0]->count;
}

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[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;
	}
	return NULL;
}

static int rpm_getint(int tag, int itemindex)
{
	rpm_index **found;
	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;

	tmpint = (int *) ((char *) map + found[0]->offset);

	if (found[0]->type == RPM_INT32_TYPE) {
		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)
{
	struct stat oldfile;
	int stat_res;
	char *newname;
	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);
			free(newname);
		}
	}
}

static void fileaction_setowngrp(char *filename, int fileref)
{
	/* real rpm warns: "user foo does not exist - using <you>" */
	struct passwd *pw = getpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref));
	int uid = pw ? pw->pw_uid : getuid(); /* or euid? */
	struct group *gr = getgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref));
	int gid = gr ? gr->gr_gid : getgid();
	chown(filename, uid, gid);
}

static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
{
	int count = 0;
	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);
	}
}
1	niro	532	/* vi: set sw=4 ts=4: */
2			/*
3			* Mini rpm applet for busybox
4			*
5			* Copyright (C) 2001,2002 by Laurence Anderson
6			*
7			* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
8			*/
9
10	niro	816	#include "libbb.h"
11	niro	532	#include "unarchive.h"
12	niro	1123	#include "rpm.h"
13	niro	532
14			#define RPM_CHAR_TYPE 1
15			#define RPM_INT8_TYPE 2
16			#define RPM_INT16_TYPE 3
17			#define RPM_INT32_TYPE 4
18			/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
19			#define RPM_STRING_TYPE 6
20			#define RPM_BIN_TYPE 7
21			#define RPM_STRING_ARRAY_TYPE 8
22			#define RPM_I18NSTRING_TYPE 9
23
24			#define TAG_NAME 1000
25			#define TAG_VERSION 1001
26			#define TAG_RELEASE 1002
27			#define TAG_SUMMARY 1004
28			#define TAG_DESCRIPTION 1005
29			#define TAG_BUILDTIME 1006
30			#define TAG_BUILDHOST 1007
31			#define TAG_SIZE 1009
32			#define TAG_VENDOR 1011
33			#define TAG_LICENSE 1014
34			#define TAG_PACKAGER 1015
35			#define TAG_GROUP 1016
36			#define TAG_URL 1020
37			#define TAG_PREIN 1023
38			#define TAG_POSTIN 1024
39			#define TAG_FILEFLAGS 1037
40			#define TAG_FILEUSERNAME 1039
41			#define TAG_FILEGROUPNAME 1040
42			#define TAG_SOURCERPM 1044
43			#define TAG_PREINPROG 1085
44			#define TAG_POSTINPROG 1086
45			#define TAG_PREFIXS 1098
46			#define TAG_DIRINDEXES 1116
47			#define TAG_BASENAMES 1117
48			#define TAG_DIRNAMES 1118
49	niro	1123
50	niro	532	#define RPMFILE_CONFIG (1 << 0)
51			#define RPMFILE_DOC (1 << 1)
52
53			enum rpm_functions_e {
54			rpm_query = 1,
55			rpm_install = 2,
56			rpm_query_info = 4,
57			rpm_query_package = 8,
58			rpm_query_list = 16,
59			rpm_query_list_doc = 32,
60			rpm_query_list_config = 64
61			};
62
63			typedef struct {
64			uint32_t tag; /* 4 byte tag */
65			uint32_t type; /* 4 byte type */
66			uint32_t offset; /* 4 byte offset */
67			uint32_t count; /* 4 byte count */
68			} rpm_index;
69
70			static void *map;
71			static rpm_index **mytags;
72			static int tagcount;
73
74	niro	1123	static void extract_cpio(int fd, const char *source_rpm);
75	niro	532	static rpm_index *rpm_gettags(int fd, int num_tags);
76			static int bsearch_rpmtag(const void key, const void item);
77			static char *rpm_getstr(int tag, int itemindex);
78			static int rpm_getint(int tag, int itemindex);
79			static int rpm_getcount(int tag);
80			static void fileaction_dobackup(char *filename, int fileref);
81			static void fileaction_setowngrp(char *filename, int fileref);
82			static void loop_through_files(int filetag, void (fileaction)(char filename, int fileref));
83
84	niro	816	int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
85	niro	532	int rpm_main(int argc, char **argv)
86			{
87			int opt = 0, func = 0, rpm_fd, offset;
88			const int pagesize = getpagesize();
89
90			while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
91			switch (opt) {
92			case 'i': /* First arg: Install mode, with q: Information */
93			if (!func) func = rpm_install;
94			else func \|= rpm_query_info;
95			break;
96			case 'q': /* First arg: Query mode */
97			if (func) bb_show_usage();
98			func = rpm_query;
99			break;
100			case 'p': /* Query a package */
101			func \|= rpm_query_package;
102			break;
103			case 'l': /* List files in a package */
104			func \|= rpm_query_list;
105			break;
106			case 'd': /* List doc files in a package (implies list) */
107			func \|= rpm_query_list;
108			func \|= rpm_query_list_doc;
109			break;
110			case 'c': /* List config files in a package (implies list) */
111			func \|= rpm_query_list;
112			func \|= rpm_query_list_config;
113			break;
114			default:
115			bb_show_usage();
116			}
117			}
118			argv += optind;
119	niro	816	//argc -= optind;
120	niro	984	if (!argv[0]) {
121			bb_show_usage();
122			}
123	niro	532
124			while (*argv) {
125	niro	1123	const char *source_rpm;
126
127	niro	532	rpm_fd = xopen(*argv++, O_RDONLY);
128			mytags = rpm_gettags(rpm_fd, &tagcount);
129			if (!mytags)
130			bb_error_msg_and_die("error reading rpm header");
131			offset = xlseek(rpm_fd, 0, SEEK_CUR);
132			/* Mimimum is one page */
133			map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
134
135	niro	1123	source_rpm = rpm_getstr(TAG_SOURCERPM, 0);
136
137	niro	532	if (func & rpm_install) {
138			/* Backup any config files */
139			loop_through_files(TAG_BASENAMES, fileaction_dobackup);
140			/* Extact the archive */
141	niro	1123	extract_cpio(rpm_fd, source_rpm);
142	niro	532	/* Set the correct file uid/gid's */
143			loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
144			}
145			else if ((func & (rpm_query\|rpm_query_package)) == (rpm_query\|rpm_query_package)) {
146			if (!(func & (rpm_query_info\|rpm_query_list))) {
147			/* If just a straight query, just give package name */
148			printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
149			}
150			if (func & rpm_query_info) {
151			/* Do the nice printout */
152			time_t bdate_time;
153	niro	984	struct tm *bdate_ptm;
154	niro	532	char bdatestring[50];
155	niro	1123	const char *p;
156
157			p = rpm_getstr(TAG_PREFIXS, 0);
158			if (!p) p = "(not relocateable)";
159			printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), p);
160			p = rpm_getstr(TAG_VENDOR, 0);
161			if (!p) p = "(none)";
162			printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), p);
163	niro	532	bdate_time = rpm_getint(TAG_BUILDTIME, 0);
164	niro	984	bdate_ptm = localtime(&bdate_time);
165			strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
166	niro	532	printf("Release : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring);
167			printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0));
168	niro	1123	printf("Group : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), source_rpm);
169	niro	532	printf("Size : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0));
170			printf("URL : %s\n", rpm_getstr(TAG_URL, 0));
171			printf("Summary : %s\n", rpm_getstr(TAG_SUMMARY, 0));
172			printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
173			}
174			if (func & rpm_query_list) {
175			int count, it, flags;
176			count = rpm_getcount(TAG_BASENAMES);
177			for (it = 0; it < count; it++) {
178			flags = rpm_getint(TAG_FILEFLAGS, it);
179			switch (func & (rpm_query_list_doc\|rpm_query_list_config)) {
180			case rpm_query_list_doc:
181			if (!(flags & RPMFILE_DOC)) continue;
182			break;
183			case rpm_query_list_config:
184			if (!(flags & RPMFILE_CONFIG)) continue;
185			break;
186			case rpm_query_list_doc\|rpm_query_list_config:
187			if (!(flags & (RPMFILE_CONFIG\|RPMFILE_DOC))) continue;
188			break;
189			}
190			printf("%s%s\n",
191			rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
192			rpm_getstr(TAG_BASENAMES, it));
193			}
194			}
195			}
196			free(mytags);
197			}
198			return 0;
199			}
200
201	niro	1123	static void extract_cpio(int fd, const char *source_rpm)
202	niro	816	{
203	niro	532	archive_handle_t *archive_handle;
204
205	niro	1123	if (source_rpm != NULL) {
206			/* Binary rpm (it was built from some SRPM), install to root */
207			xchdir("/");
208			} /* else: SRPM, install to current dir */
209
210	niro	816	/* Initialize */
211	niro	532	archive_handle = init_handle();
212			archive_handle->seek = seek_by_read;
213			archive_handle->action_data = data_extract_all;
214	niro	1123	#if 0 /* For testing (rpm -i only lists the files in internal cpio): */
215			archive_handle->action_header = header_list;
216			archive_handle->action_data = data_skip;
217			#endif
218	niro	984	archive_handle->ah_flags = ARCHIVE_RESTORE_DATE \| ARCHIVE_CREATE_LEADING_DIRS
219	niro	816	/* compat: overwrite existing files.
220			* try "rpm -i foo.src.rpm" few times in a row -
221			* standard rpm will not complain.
222			* (TODO? real rpm creates "file;1234" and then renames it) */
223	niro	984	\| ARCHIVE_UNLINK_OLD;
224	niro	532	archive_handle->src_fd = fd;
225	niro	816	/archive_handle->offset = 0; - init_handle() did it /
226	niro	532
227	niro	1123	setup_unzip_on_fd(archive_handle->src_fd /, fail_if_not_detected: 1/);
228	niro	532	while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
229	niro	816	continue;
230	niro	532	}
231
232			static rpm_index *rpm_gettags(int fd, int num_tags)
233			{
234	niro	1123	/* We should never need more than 200 (shrink via realloc later) */
235	niro	816	rpm_index *tags = xzalloc(200 sizeof(tags[0]));
236	niro	532	int pass, tagindex = 0;
237
238			xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
239
240			/* 1st pass is the signature headers, 2nd is the main stuff */
241			for (pass = 0; pass < 2; pass++) {
242	niro	1123	struct rpm_header header;
243	niro	532	rpm_index *tmpindex;
244			int storepos;
245
246			xread(fd, &header, sizeof(header));
247	niro	1123	if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER))
248			return NULL; /* Invalid magic, or not version 1 */
249	niro	532	header.size = ntohl(header.size);
250			header.entries = ntohl(header.entries);
251	niro	1123	storepos = xlseek(fd, 0, SEEK_CUR) + header.entries * 16;
252	niro	532
253			while (header.entries--) {
254	niro	816	tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex));
255			xread(fd, tmpindex, sizeof(*tmpindex));
256	niro	532	tmpindex->tag = ntohl(tmpindex->tag);
257			tmpindex->type = ntohl(tmpindex->type);
258			tmpindex->count = ntohl(tmpindex->count);
259			tmpindex->offset = storepos + ntohl(tmpindex->offset);
260	niro	816	if (pass == 0)
261	niro	532	tmpindex->tag -= 743;
262			}
263	niro	1123	storepos = xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
264	niro	532	/* Skip padding to 8 byte boundary after reading signature headers */
265	niro	816	if (pass == 0)
266	niro	1123	xlseek(fd, (-storepos) & 0x7, SEEK_CUR);
267	niro	532	}
268	niro	1123	/* realloc tags to save space */
269			tags = xrealloc(tags, tagindex * sizeof(tags[0]));
270	niro	532	*num_tags = tagindex;
271	niro	1123	/* All done, leave the file at the start of the gzipped cpio archive */
272			return tags;
273	niro	532	}
274
275			static int bsearch_rpmtag(const void key, const void item)
276			{
277			int tag = (int )key;
278			rpm_index tmp = (rpm_index ) item;
279			return (*tag - tmp[0]->tag);
280			}
281
282			static int rpm_getcount(int tag)
283			{
284			rpm_index **found;
285			found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
286			if (!found)
287			return 0;
288			return found[0]->count;
289			}
290
291			static char *rpm_getstr(int tag, int itemindex)
292			{
293			rpm_index **found;
294			found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
295			if (!found \|\| itemindex >= found[0]->count)
296			return NULL;
297	niro	1123	if (found[0]->type == RPM_STRING_TYPE
298			\|\| found[0]->type == RPM_I18NSTRING_TYPE
299			\|\| found[0]->type == RPM_STRING_ARRAY_TYPE
300			) {
301	niro	532	int n;
302	niro	984	char tmpstr = (char ) map + found[0]->offset;
303	niro	1123	for (n = 0; n < itemindex; n++)
304	niro	532	tmpstr = tmpstr + strlen(tmpstr) + 1;
305			return tmpstr;
306			}
307			return NULL;
308			}
309
310			static int rpm_getint(int tag, int itemindex)
311			{
312			rpm_index **found;
313			int tmpint; / NB: using int8_t* would be easier to code */
314
315			/* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
316			* it's ok to ignore it because tag won't be used as a pointer */
317			found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
318			if (!found \|\| itemindex >= found[0]->count)
319			return -1;
320
321	niro	984	tmpint = (int ) ((char ) map + found[0]->offset);
322	niro	532
323			if (found[0]->type == RPM_INT32_TYPE) {
324			tmpint = (int ) ((char ) tmpint + itemindex*4);
325			/return ntohl(tmpint);*/
326			/* int can be != int32_t */
327			return ntohl((int32_t)tmpint);
328			}
329			if (found[0]->type == RPM_INT16_TYPE) {
330			tmpint = (int ) ((char ) tmpint + itemindex*2);
331			/* ??? read int, and THEN ntohs() it?? */
332			/return ntohs(tmpint);*/
333			return ntohs((int16_t)tmpint);
334			}
335			if (found[0]->type == RPM_INT8_TYPE) {
336			tmpint = (int ) ((char ) tmpint + itemindex);
337			/* ??? why we don't read byte here??? */
338			/return ntohs(tmpint);*/
339			return (int8_t)tmpint;
340			}
341			return -1;
342			}
343
344			static void fileaction_dobackup(char *filename, int fileref)
345			{
346			struct stat oldfile;
347			int stat_res;
348			char *newname;
349			if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
350			/* Only need to backup config files */
351			stat_res = lstat(filename, &oldfile);
352			if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
353			/* File already exists - really should check MD5's etc to see if different */
354			newname = xasprintf("%s.rpmorig", filename);
355			copy_file(filename, newname, FILEUTILS_RECUR \| FILEUTILS_PRESERVE_STATUS);
356			remove_file(filename, FILEUTILS_RECUR \| FILEUTILS_FORCE);
357			free(newname);
358			}
359			}
360			}
361
362			static void fileaction_setowngrp(char *filename, int fileref)
363			{
364	niro	816	/* real rpm warns: "user foo does not exist - using <you>" */
365			struct passwd *pw = getpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref));
366			int uid = pw ? pw->pw_uid : getuid(); /* or euid? */
367			struct group *gr = getgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref));
368			int gid = gr ? gr->gr_gid : getgid();
369	niro	532	chown(filename, uid, gid);
370			}
371
372			static void loop_through_files(int filetag, void (fileaction)(char filename, int fileref))
373			{
374			int count = 0;
375			while (rpm_getstr(filetag, count)) {
376			char* filename = xasprintf("%s%s",
377			rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
378			rpm_getstr(TAG_BASENAMES, count));
379			fileaction(filename, count++);
380			free(filename);
381			}
382			}