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d921b2ecc0
busybox/archival/rpm.c
Rob Landley d921b2ecc0 Remove bb_ prefixes from xfuncs.c (and a few other places), consolidate 
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only
had one user), clean up lots of #includes...  General cleanup pass.  What I've
been doing for the last couple days.

And it conflicts!  I've removed httpd.c from this checkin due to somebody else
touching that file.  It builds for me.  I have to catch a bus.  (Now you know
why I'm looking forward to Mercurial.)
2006-08-03 15:41:12 +00:00

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/* 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 "busybox.h"
#include "unarchive.h"
#define RPM_HEADER_MAGIC "\216\255\350"
#define RPM_CHAR_TYPE 1
#define RPM_INT8_TYPE 2
#define RPM_INT16_TYPE 3
#define RPM_INT32_TYPE 4
/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
#define RPM_STRING_TYPE 6
#define RPM_BIN_TYPE 7
#define RPM_STRING_ARRAY_TYPE 8
#define RPM_I18NSTRING_TYPE 9
#define RPMTAG_NAME 1000
#define RPMTAG_VERSION 1001
#define RPMTAG_RELEASE 1002
#define RPMTAG_SUMMARY 1004
#define RPMTAG_DESCRIPTION 1005
#define RPMTAG_BUILDTIME 1006
#define RPMTAG_BUILDHOST 1007
#define RPMTAG_SIZE 1009
#define RPMTAG_VENDOR 1011
#define RPMTAG_LICENSE 1014
#define RPMTAG_PACKAGER 1015
#define RPMTAG_GROUP 1016
#define RPMTAG_URL 1020
#define RPMTAG_PREIN 1023
#define RPMTAG_POSTIN 1024
#define RPMTAG_FILEFLAGS 1037
#define RPMTAG_FILEUSERNAME 1039
#define RPMTAG_FILEGROUPNAME 1040
#define RPMTAG_SOURCERPM 1044
#define RPMTAG_PREINPROG 1085
#define RPMTAG_POSTINPROG 1086
#define RPMTAG_PREFIXS 1098
#define RPMTAG_DIRINDEXES 1116
#define RPMTAG_BASENAMES 1117
#define RPMTAG_DIRNAMES 1118
#define RPMFILE_CONFIG (1 << 0)
#define RPMFILE_DOC (1 << 1)
enum rpm_functions_e {
rpm_query = 1,
rpm_install = 2,
rpm_query_info = 4,
rpm_query_package = 8,
rpm_query_list = 16,
rpm_query_list_doc = 32,
rpm_query_list_config = 64
};
typedef struct {
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;
void extract_cpio_gz(int fd);
rpm_index **rpm_gettags(int fd, int *num_tags);
int bsearch_rpmtag(const void *key, const void *item);
char *rpm_getstring(int tag, int itemindex);
int rpm_getint(int tag, int itemindex);
int rpm_getcount(int tag);
void exec_script(int progtag, int datatag, char *prefix);
void fileaction_dobackup(char *filename, int fileref);
void fileaction_setowngrp(char *filename, int fileref);
void fileaction_list(char *filename, int itemno);
void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref));
int rpm_main(int argc, char **argv)
{
int opt = 0, func = 0, rpm_fd, offset;
while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
switch (opt) {
case 'i': // First arg: Install mode, with q: Information
if (!func) func |= rpm_install;
else func |= rpm_query_info;
break;
case 'q': // First arg: Query mode
if (!func) func |= rpm_query;
else bb_show_usage();
break;
case 'p': // Query a package
func |= rpm_query_package;
break;
case 'l': // List files in a package
func |= rpm_query_list;
break;
case 'd': // List doc files in a package (implies list)
func |= rpm_query_list;
func |= rpm_query_list_doc;
break;
case 'c': // List config files in a package (implies list)
func |= rpm_query_list;
func |= rpm_query_list_config;
break;
default:
bb_show_usage();
}
}
if (optind == argc) bb_show_usage();
while (optind < argc) {
rpm_fd = xopen(argv[optind], O_RDONLY);
mytags = rpm_gettags(rpm_fd, (int *) &tagcount);
offset = lseek(rpm_fd, 0, SEEK_CUR);
if (!mytags) { printf("Error reading rpm header\n"); exit(-1); }
map = mmap(0, offset > getpagesize() ? (offset + offset % getpagesize()) : getpagesize(), PROT_READ, MAP_PRIVATE, rpm_fd, 0); // Mimimum is one page
if (func & rpm_install) {
loop_through_files(RPMTAG_BASENAMES, fileaction_dobackup); /* Backup any config files */
extract_cpio_gz(rpm_fd); // Extact the archive
loop_through_files(RPMTAG_BASENAMES, fileaction_setowngrp); /* Set the correct file uid/gid's */
} else if (func & rpm_query && func & rpm_query_package) {
if (!((func & rpm_query_info) || (func & rpm_query_list))) { // If just a straight query, just give package name
printf("%s-%s-%s\n", rpm_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_RELEASE, 0));
}
if (func & rpm_query_info) {
/* Do the nice printout */
time_t bdate_time;
struct tm *bdate;
char bdatestring[50];
printf("Name : %-29sRelocations: %s\n", rpm_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_PREFIXS, 0) ? rpm_getstring(RPMTAG_PREFIXS, 0) : "(not relocateable)");
printf("Version : %-34sVendor: %s\n", rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_VENDOR, 0) ? rpm_getstring(RPMTAG_VENDOR, 0) : "(none)");
bdate_time = rpm_getint(RPMTAG_BUILDTIME, 0);
bdate = localtime((time_t *) &bdate_time);
strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate);
printf("Release : %-30sBuild Date: %s\n", rpm_getstring(RPMTAG_RELEASE, 0), bdatestring);
printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstring(RPMTAG_BUILDHOST, 0));
printf("Group : %-30sSource RPM: %s\n", rpm_getstring(RPMTAG_GROUP, 0), rpm_getstring(RPMTAG_SOURCERPM, 0));
printf("Size : %-33dLicense: %s\n", rpm_getint(RPMTAG_SIZE, 0), rpm_getstring(RPMTAG_LICENSE, 0));
printf("URL : %s\n", rpm_getstring(RPMTAG_URL, 0));
printf("Summary : %s\n", rpm_getstring(RPMTAG_SUMMARY, 0));
printf("Description :\n%s\n", rpm_getstring(RPMTAG_DESCRIPTION, 0));
}
if (func & rpm_query_list) {
int count, it, flags;
count = rpm_getcount(RPMTAG_BASENAMES);
for (it = 0; it < count; it++) {
flags = rpm_getint(RPMTAG_FILEFLAGS, it);
switch ((func & rpm_query_list_doc) + (func & rpm_query_list_config))
{
case rpm_query_list_doc: if (!(flags & RPMFILE_DOC)) continue; break;
case rpm_query_list_config: if (!(flags & RPMFILE_CONFIG)) continue; break;
case rpm_query_list_doc + rpm_query_list_config: if (!((flags & RPMFILE_CONFIG) || (flags & RPMFILE_DOC))) continue; break;
}
printf("%s%s\n", rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES, it)), rpm_getstring(RPMTAG_BASENAMES, it));
}
}
}
optind++;
free (mytags);
}
return 0;
}
void extract_cpio_gz(int fd) {
archive_handle_t *archive_handle;
unsigned char magic[2];
/* Initialise */
archive_handle = init_handle();
archive_handle->seek = seek_by_char;
//archive_handle->action_header = header_list;
archive_handle->action_data = data_extract_all;
archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
archive_handle->flags |= ARCHIVE_CREATE_LEADING_DIRS;
archive_handle->src_fd = fd;
archive_handle->offset = 0;
xread(archive_handle->src_fd, &magic, 2);
if ((magic[0] != 0x1f) || (magic[1] != 0x8b)) {
bb_error_msg_and_die("Invalid gzip magic");
}
check_header_gzip(archive_handle->src_fd);
xchdir("/"); // Install RPM's to root
archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip);
archive_handle->offset = 0;
while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
}
rpm_index **rpm_gettags(int fd, int *num_tags)
{
rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *)); /* We should never need mode than 200, and realloc later */
int pass, tagindex = 0;
lseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
for (pass = 0; pass < 2; pass++) { /* 1st pass is the signature headers, 2nd is the main stuff */
struct {
char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
uint8_t version; /* 1 byte version number */
uint32_t reserved; /* 4 bytes reserved */
uint32_t entries; /* Number of entries in header (4 bytes) */
uint32_t size; /* Size of store (4 bytes) */
} header;
rpm_index *tmpindex;
int storepos;
read(fd, &header, sizeof(header));
if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0) return NULL; /* Invalid magic */
if (header.version != 1) return NULL; /* This program only supports v1 headers */
header.size = ntohl(header.size);
header.entries = ntohl(header.entries);
storepos = lseek(fd,0,SEEK_CUR) + header.entries * 16;
while (header.entries--) {
tmpindex = tags[tagindex++] = xmalloc(sizeof(rpm_index));
read(fd, tmpindex, sizeof(rpm_index));
tmpindex->tag = ntohl(tmpindex->tag); tmpindex->type = ntohl(tmpindex->type); tmpindex->count = ntohl(tmpindex->count);
tmpindex->offset = storepos + ntohl(tmpindex->offset);
if (pass==0) tmpindex->tag -= 743;
}
lseek(fd, header.size, SEEK_CUR); /* Seek past store */
if (pass==0) lseek(fd, (8 - (lseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR); /* Skip padding to 8 byte boundary after reading signature headers */
}
tags = realloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */
*num_tags = tagindex;
return tags; /* All done, leave the file at the start of the gzipped cpio archive */
}
int bsearch_rpmtag(const void *key, const void *item)
{
int *tag = (int *)key;
rpm_index **tmp = (rpm_index **) item;
return (*tag - tmp[0]->tag);
}
int rpm_getcount(int tag)
{
rpm_index **found;
found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
if (!found) return 0;
else return found[0]->count;
}
char *rpm_getstring(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;
} else return NULL;
}
int rpm_getint(int tag, int itemindex)
{
rpm_index **found;
int n, *tmpint;
/* 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 *) (map + found[0]->offset);
if (found[0]->type == RPM_INT32_TYPE) {
for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 4);
return ntohl(*tmpint);
} else if (found[0]->type == RPM_INT16_TYPE) {
for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 2);
return ntohs(*tmpint);
} else if (found[0]->type == RPM_INT8_TYPE) {
for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 1);
return ntohs(*tmpint);
} else return -1;
}
void fileaction_dobackup(char *filename, int fileref)
{
struct stat oldfile;
int stat_res;
char *newname;
if (rpm_getint(RPMTAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) { /* Only need to backup config files */
stat_res = lstat (filename, &oldfile);
if (stat_res == 0 && S_ISREG(oldfile.st_mode)) { /* File already exists - really should check MD5's etc to see if different */
newname = xstrdup(filename);
newname = strcat(newname, ".rpmorig");
copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
free(newname);
}
}
}
void fileaction_setowngrp(char *filename, int fileref)
{
int uid, gid;
uid = bb_xgetpwnam(rpm_getstring(RPMTAG_FILEUSERNAME, fileref));
gid = bb_xgetgrnam(rpm_getstring(RPMTAG_FILEGROUPNAME, fileref));
chown (filename, uid, gid);
}
void fileaction_list(char *filename, int ATTRIBUTE_UNUSED fileref)
{
printf("%s\n", filename);
}
void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
{
int count = 0;
while (rpm_getstring(filetag, count)) {
char * filename = xasprintf("%s%s",
rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES,
count)), rpm_getstring(RPMTAG_BASENAMES, count));
fileaction(filename, count++);
free(filename);
}
}
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