1 files changed, 96 insertions, 0 deletions
diff --git a/archival/dpkg_deb.c b/archival/dpkg_deb.c
new file mode 100644
index 0000000..d11d9df
--- /dev/null
+++ b/archival/dpkg_deb.c
@@ -0,0 +1,96 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * dpkg-deb packs, unpacks and provides information about Debian archives.
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+#include "busybox.h"
+#include "unarchive.h"
+
+#define DPKG_DEB_OPT_CONTENTS	1
+#define DPKG_DEB_OPT_CONTROL	2
+#define DPKG_DEB_OPT_FIELD	4
+#define DPKG_DEB_OPT_EXTRACT	8
+#define DPKG_DEB_OPT_EXTRACT_VERBOSE	16
+
+int dpkg_deb_main(int argc, char **argv)
+{
+	archive_handle_t *ar_archive;
+	archive_handle_t *tar_archive;
+	llist_t *control_tar_llist = NULL;
+	unsigned opt;
+	char *extract_dir = NULL;
+	short argcount = 1;
+
+	/* Setup the tar archive handle */
+	tar_archive = init_handle();
+
+	/* Setup an ar archive handle that refers to the gzip sub archive */
+	ar_archive = init_handle();
+	ar_archive->sub_archive = tar_archive;
+	ar_archive->filter = filter_accept_list_reassign;
+
+#ifdef CONFIG_FEATURE_DEB_TAR_GZ
+	llist_add_to(&(ar_archive->accept), "data.tar.gz");
+	llist_add_to(&control_tar_llist, "control.tar.gz");
+#endif
+
+#ifdef CONFIG_FEATURE_DEB_TAR_BZ2
+	llist_add_to(&(ar_archive->accept), "data.tar.bz2");
+	llist_add_to(&control_tar_llist, "control.tar.bz2");
+#endif
+
+	opt_complementary = "?c--efXx:e--cfXx:f--ceXx:X--cefx:x--cefX";
+	opt = getopt32(argc, argv, "cefXx");
+
+	if (opt & DPKG_DEB_OPT_CONTENTS) {
+		tar_archive->action_header = header_verbose_list;
+	}
+	if (opt & DPKG_DEB_OPT_CONTROL) {
+		ar_archive->accept = control_tar_llist;
+		tar_archive->action_data = data_extract_all;
+		if (optind + 1 == argc) {
+			extract_dir = "./DEBIAN";
+		} else {
+			argcount++;
+		}
+	}
+	if (opt & DPKG_DEB_OPT_FIELD) {
+		/* Print the entire control file
+		 * it should accept a second argument which specifies a
+		 * specific field to print */
+		ar_archive->accept = control_tar_llist;
+		llist_add_to(&(tar_archive->accept), "./control");
+		tar_archive->filter = filter_accept_list;
+		tar_archive->action_data = data_extract_to_stdout;
+	}
+	if (opt & DPKG_DEB_OPT_EXTRACT) {
+		tar_archive->action_header = header_list;
+	}
+	if (opt & (DPKG_DEB_OPT_EXTRACT_VERBOSE | DPKG_DEB_OPT_EXTRACT)) {
+		tar_archive->action_data = data_extract_all;
+		argcount = 2;
+	}
+
+	if ((optind + argcount) != argc) {
+		bb_show_usage();
+	}
+
+	tar_archive->src_fd = ar_archive->src_fd = xopen(argv[optind++], O_RDONLY);
+
+	/* Workout where to extract the files */
+	/* 2nd argument is a dir name */
+	if (argv[optind]) {
+		extract_dir = argv[optind];
+	}
+	if (extract_dir) {
+		mkdir(extract_dir, 0777); /* bb_make_directory(extract_dir, 0777, 0) */
+		xchdir(extract_dir);
+	}
+	unpack_ar_archive(ar_archive);
+
+	/* Cleanup */
+	close(ar_archive->src_fd);
+
+	return EXIT_SUCCESS;
+}