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-rw-r--r--src/commands/rpm2cpio.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/src/commands/rpm2cpio.c b/src/commands/rpm2cpio.c
new file mode 100644
index 0000000..034cd89
--- /dev/null
+++ b/src/commands/rpm2cpio.c
@@ -0,0 +1,134 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+
+/*
+ * File-Roller
+ *
+ * Copyright (C) 2001 The Free Software Foundation, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <glib.h>
+
+
+static const char *
+get_mime_type_from_magic_numbers (char *buffer)
+{
+ static struct {
+ const char *mime_type;
+ const char *first_bytes;
+ int offset;
+ int len;
+ } sniffer_data [] = {
+ { "application/x-bzip2", "BZh", 0, 3 },
+ { "application/x-gzip", "\037\213", 0, 2 },
+ { "application/x-xz", "\3757zXZ\000", 0, 6 },
+ { NULL, NULL, 0 }
+ };
+ int i;
+
+ for (i = 0; sniffer_data[i].mime_type != NULL; i++)
+ if (memcmp (sniffer_data[i].first_bytes,
+ buffer + sniffer_data[i].offset,
+ sniffer_data[i].len) == 0)
+ {
+ return sniffer_data[i].mime_type;
+ }
+
+ return NULL;
+}
+
+
+int
+main (int argc, char **argv)
+{
+ const char *filename;
+ GString *cpio_args;
+ int i;
+ FILE *stream;
+ guchar bytes[8];
+ int il, dl, sigsize, offset;
+ const char *mime_type;
+ const char *archive_command;
+ char *command;
+
+ if (argc < 3)
+ return 0;
+
+ filename = argv[1];
+ cpio_args = g_string_new (argv[2]);
+ for (i = 3; i < argc; i++) {
+ g_string_append (cpio_args, " ");
+ g_string_append (cpio_args, argv[i]);
+ }
+
+ stream = fopen (filename, "r");
+ if (stream == NULL)
+ return 1;
+
+ if (fseek (stream, 104 , SEEK_CUR) != 0) {
+ fclose (stream);
+ return 1;
+ }
+ if (fread (bytes, 1, 8, stream) == 0) {
+ fclose (stream);
+ return 1;
+ }
+ il = 256 * (256 * (256 * bytes[0] + bytes[1]) + bytes[2]) + bytes[3];
+ dl = 256 * (256 * (256 * bytes[4] + bytes[5]) + bytes[6]) + bytes[7];
+ sigsize = 8 + 16 * il + dl;
+ offset = 104 + sigsize + (8 - (sigsize % 8)) % 8 + 8;
+ if (fseek (stream, offset, SEEK_SET) != 0) {
+ fclose (stream);
+ return 1;
+ }
+ if (fread (bytes, 1, 8, stream) == 0) {
+ fclose (stream);
+ return 1;
+ }
+ il = 256 * (256 * (256 * bytes[0] + bytes[1]) + bytes[2]) + bytes[3];
+ dl = 256 * (256 * (256 * bytes[4] + bytes[5]) + bytes[6]) + bytes[7];
+ sigsize = 8 + 16 * il + dl;
+ offset = offset + sigsize;
+
+ /* get the payload type */
+
+ if (fseek (stream, offset, SEEK_SET) != 0) {
+ fclose (stream);
+ return 1;
+ }
+ if (fread (bytes, 1, 8, stream) == 0) {
+ fclose (stream);
+ return 1;
+ }
+ mime_type = get_mime_type_from_magic_numbers ((char *)bytes);
+ if (mime_type == NULL)
+ archive_command = "lzma -dc";
+ else if (strcmp (mime_type, "application/x-xz") == 0)
+ archive_command = "xz -dc";
+ else if (strcmp (mime_type, "application/x-gzip") == 0)
+ archive_command = "gzip -dc";
+ else
+ archive_command = "bzip2 -dc";
+ fclose (stream);
+
+ command = g_strdup_printf ("sh -c \"dd if=%s ibs=%u skip=1 2>/dev/null | %s | cpio %s\"", g_shell_quote (filename), offset, archive_command, cpio_args->str);
+
+ return system (command);
+}