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authorGlenn L McGrath2002-09-25 02:47:48 +0000
committerGlenn L McGrath2002-09-25 02:47:48 +0000
commit7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23 (patch)
treef38c7ef4317eea28c6abdb0adbbb286fe041711e /archival/ar.c
parentecfa290cfd4953598e6d91989bd66ac16e135f84 (diff)
downloadbusybox-7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23.zip
busybox-7ca04f328e22fcbee4659d73f9a72dfdf1dd6a23.tar.gz
New common unarchive code.
Diffstat (limited to 'archival/ar.c')
-rw-r--r--archival/ar.c123
1 files changed, 92 insertions, 31 deletions
diff --git a/archival/ar.c b/archival/ar.c
index ac8c41f..b5fa795 100644
--- a/archival/ar.c
+++ b/archival/ar.c
@@ -21,41 +21,100 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
+ * There is no signle standard to adhere to so ar may not portable
+ * between different systems
+ * http://www.unix-systems.org/single_unix_specification_v2/xcu/ar.html
*/
+#include <sys/types.h>
#include <fcntl.h>
+#include <fnmatch.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <time.h>
+#include <utime.h>
+#include <unistd.h>
#include <getopt.h>
#include "unarchive.h"
#include "busybox.h"
+static void header_verbose_list_ar(const file_header_t *file_header)
+{
+ const char *mode = mode_string(file_header->mode);
+ char *mtime;
+
+ mtime = ctime(&file_header->mtime);
+ mtime[16] = ' ';
+ memmove(&mtime[17], &mtime[20], 4);
+ mtime[21] = '\0';
+ printf("%s %d/%d%7d %s %s\n", &mode[1], file_header->uid, file_header->gid, (int) file_header->size, &mtime[4], file_header->name);
+}
+
+#if defined CONFIG_TAR | defined CONFIG_DPKG_DEB | defined CONFIG_CPIO
+/* This is simpler than data_extract_all */
+static void data_extract_regular_file(archive_handle_t *archive_handle)
+{
+ file_header_t *file_header;
+ int dst_fd;
+
+ file_header = archive_handle->file_header;
+ dst_fd = xopen(file_header->name, O_WRONLY | O_CREAT);
+ copy_file_chunk_fd(archive_handle->src_fd, dst_fd, file_header->size);
+ close(dst_fd);
+
+ chmod(file_header->name, file_header->mode);
+ chown(file_header->name, file_header->uid, file_header->gid);
+
+ if (archive_handle->flags & ARCHIVE_PRESERVE_DATE) {
+ struct utimbuf t;
+ t.actime = t.modtime = file_header->mtime;
+ utime(file_header->name, &t);
+ }
+
+ return;
+}
+#endif
+
extern int ar_main(int argc, char **argv)
{
- FILE *src_stream = NULL;
- char **extract_names = NULL;
- char ar_magic[8];
- int extract_function = extract_unconditional;
+ archive_handle_t *archive_handle;
int opt;
- int num_of_entries = 0;
- extern off_t archive_offset;
- while ((opt = getopt(argc, argv, "ovtpx")) != -1) {
+#if defined CONFIG_TAR | defined CONFIG_DPKG_DEB | defined CONFIG_CPIO
+ archive_handle = init_handle();
+#else
+ char magic[8];
+
+ archive_handle = xcalloc(1, sizeof(archive_handle_t));
+ archive_handle->filter = filter_accept_all;
+ archive_handle->action_data = data_skip;
+ archive_handle->action_header = header_skip;
+ archive_handle->file_header =xmalloc(sizeof(file_header_t));
+#endif
+
+ while ((opt = getopt(argc, argv, "covtpxX")) != -1) {
switch (opt) {
- case 'o':
- extract_function |= extract_preserve_date;
+ case 'p': /* print */
+ archive_handle->action_data = data_extract_to_stdout;
break;
- case 'v':
- extract_function |= extract_verbose_list;
+ case 't': /* list contents */
+ archive_handle->action_header = header_list;
break;
- case 't':
- extract_function |= extract_list;
+ case 'X':
+ archive_handle->action_header = header_verbose_list_ar;
+ case 'x': /* extract */
+#if defined CONFIG_TAR | defined CONFIG_DPKG_DEB | defined CONFIG_CPIO
+ archive_handle->action_data = data_extract_all;
+#else
+ archive_handle->action_data = data_extract_regular_file;
+#endif
break;
- case 'p':
- extract_function |= extract_to_stdout;
+ /* Modifiers */
+ case 'o': /* preserve original dates */
+ archive_handle->flags |= ARCHIVE_PRESERVE_DATE;
break;
- case 'x':
- extract_function |= extract_all_to_fs;
+ case 'v': /* verbose */
+ archive_handle->action_header = header_verbose_list_ar;
break;
default:
show_usage();
@@ -67,24 +126,26 @@ extern int ar_main(int argc, char **argv)
show_usage();
}
- src_stream = xfopen(argv[optind++], "r");
+ archive_handle->src_fd = xopen(argv[optind++], O_RDONLY);
- /* check ar magic */
- fread(ar_magic, 1, 8, src_stream);
- archive_offset = 8;
- if (strncmp(ar_magic,"!<arch>",7) != 0) {
- error_msg_and_die("invalid magic");
- }
-
- /* Create a list of files to extract */
+ /* TODO: This is the same as in tar, seperate function ? */
while (optind < argc) {
- extract_names = xrealloc(extract_names, sizeof(char *) * (num_of_entries + 2));
- extract_names[num_of_entries] = xstrdup(argv[optind]);
- num_of_entries++;
- extract_names[num_of_entries] = NULL;
+ archive_handle->filter = filter_accept_list;
+ archive_handle->accept = add_to_list(archive_handle->accept, argv[optind]);
optind++;
}
- unarchive(src_stream, stdout, &get_header_ar, extract_function, "./", extract_names, NULL);
+#if defined CONFIG_DPKG_DEB
+ unpack_ar_archive(archive_handle);
+#else
+ xread_all(archive_handle->src_fd, magic, 7);
+ if (strncmp(magic, "!<arch>", 7) != 0) {
+ error_msg_and_die("Invalid ar magic");
+ }
+ archive_handle->offset += 7;
+
+ while (get_header_ar(archive_handle) == EXIT_SUCCESS);
+#endif
+
return EXIT_SUCCESS;
}