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Update dpkg to use new unarchive code

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This commit is contained in:
Glenn L McGrath 2002-10-19 10:40:55 +00:00
parent c5c1a8a112
commit 61b7904afd
5 changed files with 85 additions and 7 deletions
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50
archival/dpkg.c
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@ -38,6 +38,7 @@
*
*/
#include <fcntl.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
@ -1310,14 +1311,44 @@ void purge_package(const unsigned int package_num)
set_status(status_num, "not-installed", 3);
}
static archive_handle_t *deb_extract(const char *filename, const char *ar_name,
const char *tar_gz_name, char *prefix, void (*deb_action_data)(struct archive_handle_s *))
{
archive_handle_t *ar_archive;
archive_handle_t *tar_gz_archive;
/* Setup the tar archive handle */
tar_gz_archive = init_handle();
tar_gz_archive->filter = filter_accept_reject_list;
tar_gz_archive->action_data = deb_action_data;
tar_gz_archive->buffer = prefix;
if (tar_gz_name) {
tar_gz_archive->accept = add_to_list(NULL, tar_gz_name);
}
/* Setup an ar archive handle that refers to the gzip sub archive */
ar_archive = init_handle();
ar_archive->action_data_subarchive = get_header_tar_gz;
ar_archive->sub_archive = tar_gz_archive;
ar_archive->filter = filter_accept_reject_list;
ar_archive->accept = add_to_list(NULL, ar_name);
tar_gz_archive->src_fd = ar_archive->src_fd = xopen(filename, O_RDONLY);
unpack_ar_archive(ar_archive);
close(ar_archive->src_fd);
return(ar_archive->sub_archive);
}
void unpack_package(deb_file_t *deb_file)
{
const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
const unsigned int status_num = search_status_hashtable(package_name);
const unsigned int status_package_num = status_hashtable[status_num]->package;
FILE *out_stream;
char *info_prefix;
archive_handle_t *archive_handle;
FILE *out_stream;
/* If existing version, remove it first */
if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) {
@ -1333,8 +1364,8 @@ void unpack_package(deb_file_t *deb_file)
/* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
info_prefix = (char *) xmalloc(strlen(package_name) + 20 + 4 + 2);
sprintf(info_prefix, "/var/lib/dpkg/info/%s.", package_name);
deb_extract(deb_file->filename, stdout, (extract_quiet | extract_control_tar_gz | extract_all_to_fs | extract_unconditional), info_prefix, NULL);
deb_extract(deb_file->filename, "control.tar.gz", NULL, info_prefix, data_extract_all_prefix);
/* Run the preinst prior to extracting */
if (run_package_script(package_name, "preinst") != 0) {
/* when preinst returns exit code != 0 then quit installation process */
@ -1342,12 +1373,17 @@ void unpack_package(deb_file_t *deb_file)
}
/* Extract data.tar.gz to the root directory */
deb_extract(deb_file->filename, stdout, (extract_quiet | extract_data_tar_gz | extract_all_to_fs | extract_unconditional), "/", NULL);
archive_handle = deb_extract(deb_file->filename, "data.tar.gz", NULL, NULL, data_extract_all);
/* Create the list file */
strcat(info_prefix, "list");
out_stream = xfopen(info_prefix, "w");
deb_extract(deb_file->filename, out_stream, (extract_quiet | extract_data_tar_gz | extract_list), "/", NULL);
while (archive_handle->passed) {
/* blindly skip over the leading '.' */
fputs(archive_handle->passed->data + 1, out_stream);
fputc('\n', out_stream);
archive_handle->passed = archive_handle->passed->link;
}
fclose(out_stream);
/* change status */
@ -1440,8 +1476,10 @@ int dpkg_main(int argc, char **argv)
deb_file = xrealloc(deb_file, sizeof(deb_file_t *) * (deb_count + 2));
deb_file[deb_count] = (deb_file_t *) xmalloc(sizeof(deb_file_t));
if (dpkg_opt & dpkg_opt_filename) {
archive_handle_t *archive_handle;
deb_file[deb_count]->filename = xstrdup(argv[optind]);
deb_file[deb_count]->control_file = deb_extract(argv[optind], stdout, (extract_control_tar_gz | extract_one_to_buffer), NULL, "./control");
archive_handle = deb_extract(argv[optind], "control.tar.gz", "./control", NULL, data_extract_to_buffer);
deb_file[deb_count]->control_file = archive_handle->buffer;
if (deb_file[deb_count]->control_file == NULL) {
error_msg_and_die("Couldnt extract control file");
}

2
archival/libunarchive/Makefile.in
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@ -26,7 +26,9 @@ LIBUNARCHIVE-y:= \
\
data_skip.o \
data_extract_all.o \
data_extract_all_prefix.o \
data_extract_to_stdout.o \
data_extract_to_buffer.o \
\
filter_accept_all.o \
filter_accept_list.o \

23
archival/libunarchive/data_extract_all_prefix.c Normal file
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@ -0,0 +1,23 @@
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <utime.h>
#include <unistd.h>
#include <stdlib.h>
#include "libbb.h"
#include "unarchive.h"
extern void data_extract_all_prefix(archive_handle_t *archive_handle)
{
char *name_ptr = archive_handle->file_header->name;
name_ptr += strspn(name_ptr, "./");
if (name_ptr[0] != '\0') {
archive_handle->file_header->name = xmalloc(strlen(archive_handle->buffer) + 2 + strlen(name_ptr));
sprintf(archive_handle->file_header->name, "%s%s", archive_handle->buffer, name_ptr);
data_extract_all(archive_handle);
}
return;
}

11
archival/libunarchive/data_extract_to_buffer.c Normal file
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@ -0,0 +1,11 @@
#include <stdlib.h>
#include <stdio.h>
#include "unarchive.h"
#include "libbb.h"
extern void data_extract_to_buffer(archive_handle_t *archive_handle)
{
archive_handle->buffer = xmalloc(archive_handle->file_header->size + 1);
xread_all(archive_handle->src_fd, archive_handle->buffer, archive_handle->file_header->size);
}

6
include/unarchive.h
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@ -57,6 +57,9 @@ typedef struct archive_handle_s {
/* Count the number of bytes processed */
off_t offset;
/* Temperary storage */
char *buffer;
/* Misc. stuff */
unsigned char flags;
@ -70,10 +73,11 @@ extern char filter_accept_reject_list(const llist_t *accept_list, const llist_t
extern void unpack_ar_archive(archive_handle_t *ar_archive);
extern void data_gunzip(archive_handle_t *archive_handle);
extern void data_skip(archive_handle_t *archive_handle);
extern void data_extract_all(archive_handle_t *archive_handle);
extern void data_extract_all_prefix(archive_handle_t *archive_handle);
extern void data_extract_to_stdout(archive_handle_t *archive_handle);
extern void data_extract_to_buffer(archive_handle_t *archive_handle);
extern void header_skip(const file_header_t *file_header);
extern void header_list(const file_header_t *file_header);