From dd0ceb6720b8fe6b0a5e9fe21fa9da3538e7586b Mon Sep 17 00:00:00 2001
From: Thomas Schmitt <scdbackup@gmx.net>
Date: Tue, 4 Feb 2014 11:31:12 +0000
Subject: [PATCH] Implemented a generic verification whether a SPC device is a
 MMC device

---
 cdrskin/cdrskin_timestamp.h |  2 +-
 libburn/spc.c               | 35 +++++++++++++++++++++++++++++++++++
 libburn/spc.h               |  7 ++++++-
 libburn/transport.h         |  7 +++++++
 4 files changed, 49 insertions(+), 2 deletions(-)

diff --git a/cdrskin/cdrskin_timestamp.h b/cdrskin/cdrskin_timestamp.h
index 0754d22..e2e25d5 100644
--- a/cdrskin/cdrskin_timestamp.h
+++ b/cdrskin/cdrskin_timestamp.h
@@ -1 +1 @@
-#define Cdrskin_timestamP "2014.01.15.174907"
+#define Cdrskin_timestamP "2014.02.04.112944"
diff --git a/libburn/spc.c b/libburn/spc.c
index ee9c065..0ebc826 100644
--- a/libburn/spc.c
+++ b/libburn/spc.c
@@ -352,6 +352,8 @@ void spc_inquiry(struct burn_drive *d)
 	c->dir = FROM_DRIVE;
 	d->issue_command(d, c);
 	id = (struct burn_scsi_inquiry_data *)d->idata;
+	id->peripheral = 0x7f; /* SPC-3: incabable undefined peripheral type */
+	id->version = 0;                  /* SPC-3: no claim for conformance */
 	memset(id->vendor, 0, 9);
 	memset(id->product, 0, 17);
 	memset(id->revision, 0, 5);
@@ -359,6 +361,8 @@ void spc_inquiry(struct burn_drive *d)
 		id->valid = -1;
 		goto ex;
 	}
+	id->peripheral = ((char *) c->page->data)[0];
+	id->version = ((char *) c->page->data)[2];
 	memcpy(id->vendor, c->page->data + 8, 8);
 	memcpy(id->product, c->page->data + 16, 16);
 	memcpy(id->revision, c->page->data + 32, 4);
@@ -1840,3 +1844,34 @@ ex:;
 	BURN_FREE_MEM(msg);
 	return done;
 }
+
+
+int spc_confirm_cd_drive(struct burn_drive *d, int flag)
+{
+	char *msg = NULL;
+	int ret;
+
+	BURN_ALLOC_MEM(msg, char, strlen(d->devname) + 1024); 
+
+	spc_inquiry(d);
+	if (d->idata->valid < 0) {
+		sprintf(msg, "INQUIRY failed with drive '%s'", d->devname);
+		libdax_msgs_submit(libdax_messenger, -1, 0x0002000a,
+		                   LIBDAX_MSGS_SEV_FAILURE,
+		                   LIBDAX_MSGS_PRIO_HIGH, msg, 0,0);
+		ret = 0; goto ex;
+	}
+	if (d->idata->peripheral != 0x5) {
+		sprintf(msg, "Does not identify itself as CD-ROM drive '%s'",
+		             d->devname);
+		libdax_msgs_submit(libdax_messenger, -1, 0x0002000a,
+		                   LIBDAX_MSGS_SEV_FAILURE,
+		                   LIBDAX_MSGS_PRIO_HIGH, msg, 0,0);
+		ret = 0; goto ex;
+	}
+	ret = 1;
+ex:;
+	BURN_FREE_MEM(msg);
+	return ret;
+}
+
diff --git a/libburn/spc.h b/libburn/spc.h
index 81491ed..769bdae 100644
--- a/libburn/spc.h
+++ b/libburn/spc.h
@@ -1,7 +1,7 @@
 /* -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 8; -*- */
 
 /* Copyright (c) 2004 - 2006 Derek Foreman, Ben Jansens
-   Copyright (c) 2006 - 2013 Thomas Schmitt <scdbackup@gmx.net>
+   Copyright (c) 2006 - 2014 Thomas Schmitt <scdbackup@gmx.net>
    Provided under GPL version 2 or later.
 */
 
@@ -116,6 +116,11 @@ int scsi_eval_cmd_outcome(struct burn_drive *d, struct command *c, void *fp_in,
                         time_t start_time, int timeout_ms,
 			int loop_count, int flag);
 
+/* ts B40204 */
+/* Verify by INQUIRY that the drive is indeed a MMC device.
+*/
+int spc_confirm_cd_drive(struct burn_drive *d, int flag);
+
 
 /* The waiting time before eventually retrying a failed SCSI command.
    Before each retry wait Libburn_scsi_retry_incR longer than with
diff --git a/libburn/transport.h b/libburn/transport.h
index 8bbd702..a02c20a 100644
--- a/libburn/transport.h
+++ b/libburn/transport.h
@@ -73,9 +73,16 @@ struct command
 
 struct burn_scsi_inquiry_data
 {
+	char peripheral; /* bit0-4: device type should be 5
+	                    bit5-7: qualifier must be 0 */
+
+	char version;    /* should be 3 (SPC-1) to 5 (SPC-3) (or higher ?)
+	                    but is often 0. */
+
 	char vendor[9];
 	char product[17];
 	char revision[5];
+
 	int valid;
 };