2007-09-27 Christophe Fergeau <teuf@gnome.org>

* configure.ac: build tool to generate the iPod SysInfoExtended file
if sgutils is detected
* Makefile.am:
* tools/
* tools/Makefile.am: changes to optionally build the sgutils-based tool
* tools/read-sysinfoextended-sgutils.c: (do_sg_inquiry),
(read_sysinfo_extended), (main): new file, reads the SysInfoExtended
file from the iPod using SCSI queries

git-svn-id: https://gtkpod.svn.sf.net/svnroot/gtkpod/libgpod/trunk@1703 f01d2545-417e-4e96-918e-98f8d0dbbcb6

2 files changed, 161 insertions, 0 deletions

diff --git a/tools/Makefile.am b/tools/Makefile.am
new file mode 100644
index 0000000..bbd5159
--- /dev/null
+++ b/tools/Makefile.am
@@ -0,0 +1,9 @@
+if HAVE_SGUTILS
+
+bin_PROGRAMS=ipod-read-sysinfo-extended
+
+ipod_read_sysinfo_extended_SOURCES = read-sysinfoextended-sgutils.c
+ipod_read_sysinfo_extended_CFLAGS=$(LIBGPOD_CFLAGS) $(SGUTILS_CFLAGS) -I$(top_srcdir)/src
+ipod_read_sysinfo_extended_LDADD=$(LIBGPOD_LIBS) $(SGUTILS_LIBS) $(top_builddir)/src/libgpod.la
+
+endif
\ No newline at end of file
diff --git a/tools/read-sysinfoextended-sgutils.c b/tools/read-sysinfoextended-sgutils.c
new file mode 100644
index 0000000..268626f
--- /dev/null
+++ b/tools/read-sysinfoextended-sgutils.c
@@ -0,0 +1,152 @@
+/* Copyright (c) 2007, Christophe Fergeau  <teuf@gnome.org>
+ *
+ * The code contained in this file is free software; you can redistribute
+ * it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either version
+ * 2.1 of the License, or (at your option) any later version.
+ *
+ * This file 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this code; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * iTunes and iPod are trademarks of Apple
+ *
+ * This product is not supported/written/published by Apple!
+ *
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <scsi/sg_cmds.h>
+#include <sys/stat.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+
+#include "itdb.h"
+
+
+/* do_sg_inquiry and read_sysinfo_extended were heavily
+ * inspired from libipoddevice
+ */
+static unsigned char
+do_sg_inquiry (int fd, int page, char *buf, char **start)
+{
+    const unsigned int IPOD_BUF_LENGTH = 252;
+
+    if (sg_ll_inquiry (fd, 0, 1, page, buf, IPOD_BUF_LENGTH, 1, 0) != 0) {
+	*start = NULL;
+	return 0;
+    } else {
+	*start = buf + 4;
+	return (unsigned char)buf[3];
+    }
+}
+
+static char *
+read_sysinfo_extended (const char *device)
+{
+    int fd;
+    const unsigned int IPOD_XML_PAGE = 0xc0;
+    unsigned char len;
+    char buf[512];
+    char *start;
+    char *offsets;
+    GString *xml_sysinfo;
+    unsigned int i;
+
+    fd = open (device, O_RDWR);
+    if (fd < 0) {
+	return NULL;
+    }
+
+    len = do_sg_inquiry (fd, IPOD_XML_PAGE, buf, &start);
+    if (start == NULL || len == 0) {
+	close(fd);
+	return NULL;
+    }
+
+    offsets = g_new (char, len+1);
+    memcpy(offsets, start, len);
+    offsets[len] = 0;
+
+    xml_sysinfo = g_string_new_len (NULL, 512);
+    if (xml_sysinfo == NULL) {
+	g_free (offsets);
+	close (fd);
+	return NULL;
+    }
+
+    for (i = 0; offsets[i]; i++) {
+	bzero(buf, 512);
+	len = do_sg_inquiry (fd, offsets[i], buf, &start);
+	start[len] = 0;
+	g_string_append (xml_sysinfo, start);
+    }
+    
+    g_free (offsets);
+    close (fd);
+
+    return g_string_free (xml_sysinfo, FALSE);
+}
+
+int
+main (int argc, char **argv)
+{
+    char *xml;
+    
+    if (argc < 3) {
+      g_print (_("usage: %s <device> <mountpoint>\n"), g_basename (argv[0]));
+	exit (0);
+    }
+
+    xml = read_sysinfo_extended (argv[1]);
+    if (xml == NULL) {
+      g_print (_("Couldn't read xml sysinfo from %s\n"), argv[1]);
+      return 1;
+    } else {
+	const char *mountpoint = argv[2];
+	char *device_path;
+	char *filename;
+	const char *components[] = { "SysInfoExtended", NULL };
+	gboolean success;
+
+	device_path = itdb_get_device_dir (mountpoint);
+	if (device_path == NULL) {
+	    g_free (xml);
+	    g_print (_("Couldn't resolve Device directory path on %s"), 
+		     mountpoint);
+	    return 1;
+	}
+
+	filename = itdb_resolve_path (device_path, components);
+	g_free (device_path);
+	if (filename == NULL) {
+	    g_print (_("Couldn't resolve SysInfoExtended path on %s"),
+		     mountpoint);
+	    g_free (xml);
+	    return 1;
+	}
+
+	success = g_file_set_contents (filename, xml, -1, NULL);
+	g_free (xml);
+	g_free (filename);
+	if (!success) {
+	    g_print (_("Couldn't write SysInfoExtended to %s"), mountpoint);
+	    return 1;
+	}
+    }
+
+    return 0;
+}