initial

2 files changed, 141 insertions, 0 deletions

diff --git a/src/commands/Makefile.am b/src/commands/Makefile.am
new file mode 100644
index 0000000..b51c338
--- /dev/null
+++ b/src/commands/Makefile.am
@@ -0,0 +1,7 @@
+privexecdir = $(libexecdir)/$(PACKAGE)
+privexec_PROGRAMS = rpm2cpio
+
+INCLUDES = $(DISABLE_DEPRECATED) $(FR_CFLAGS)
+
+rpm2cpio_SOURCES = rpm2cpio.c
+rpm2cpio_LDADD = $(FR_LIBS)
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);
+}