[Bluez-devel] Possible Patch: list paired devices

[Bluez-devel] Possible Patch: list paired devices

[Denis KENZIOR]

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Marcel,

I noticed that there is no way to list paired devices from hcitool/hciconfig, 
at least I couldn't find a way to do so.   Here is a proposed patch to 
hcitool which will show a list of paired devices.  

I'm not sure if this is the right solution, since it requires hcitool to be 
run with effective permissions to access the linkkeys file (e.g. root on my 
system).  If there is a better way let me know.

Also, will the patch for 128 bit UUID searching in sdptool get merged into 
CVS, or did I mess something up again?

Regards,
-Denis

[-- Attachment #2: bluez-hcitool.patch --]
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Index: tools/hcitool.c
===================================================================
RCS file: /cvsroot/bluez/utils/tools/hcitool.c,v
retrieving revision 1.85
diff -u -r1.85 hcitool.c
--- tools/hcitool.c	18 Jan 2006 17:45:51 -0000	1.85
+++ tools/hcitool.c	21 Feb 2006 08:25:45 -0000
@@ -1865,6 +1865,70 @@
 	free(cr);
 }
 
+static int dev_paired(int dd, int dev_id, long arg)
+{
+	void print_key(char *key, char *value, void *data)
+	{
+		printf("%s\n", key);
+	}
+
+	struct hci_dev_info di = { dev_id: dev_id };
+	char filename[PATH_MAX + 1];
+	char addr[18];
+	
+	if (ioctl(dd, HCIGETDEVINFO, (void *) &di))
+		return 0;
+
+	ba2str(&di.bdaddr, addr);
+
+	snprintf(filename, PATH_MAX, "%s/%s/linkkeys", STORAGEDIR, addr);
+
+	printf("Devices paired to %s:\n", addr);
+	textfile_foreach(filename, print_key, NULL);
+	printf("\n");
+
+	return 0;
+}
+
+/* List pairings */
+
+static struct option paired_options[] = {
+	{ "help",	0, 0, 'h' },
+	{ 0, 0, 0, 0 }
+};
+
+static char *paired_help =
+	"Usage:\n"
+	"\tpaired\n";
+
+static void cmd_paired(int dev_id, int argc, char **argv)
+{
+	int dd, opt;
+
+	for_each_opt(opt, cc_options, NULL) {
+		switch (opt) {
+		default:
+			printf(paired_help);
+			return;
+		}
+	}
+
+	if (dev_id < 0) {
+		hci_for_each_dev(HCI_UP, dev_paired, 0);
+		return;
+	}
+
+	dd = hci_open_dev(dev_id);
+	if (dd < 0) {
+		perror("HCI device open failed");
+		exit(1);
+	}
+
+	dev_paired(dd, dev_id, 0);
+
+	hci_close_dev(dd);
+}
+
 /* Read clock offset */
 
 static struct option clkoff_options[] = {
@@ -2051,6 +2115,7 @@
 	{ "auth",   cmd_auth,   "Request authentication"               },
 	{ "enc",    cmd_enc,    "Set connection encryption"            },
 	{ "key",    cmd_key,    "Change connection link key"           },
+	{ "paired", cmd_paired, "Show paired devices"                  },
 	{ "clkoff", cmd_clkoff, "Read clock offset"                    },
 	{ "clock",  cmd_clock,  "Read local or remote clock"           },
 	{ NULL, NULL, 0 }

Re: [Bluez-devel] Possible Patch: list paired devices

[Marcel Holtmann]

Hi Denis,

> I noticed that there is no way to list paired devices from hcitool/hciconfig, 
> at least I couldn't find a way to do so.   Here is a proposed patch to 
> hcitool which will show a list of paired devices.  
> 
> I'm not sure if this is the right solution, since it requires hcitool to be 
> run with effective permissions to access the linkkeys file (e.g. root on my 
> system).  If there is a better way let me know.

you can use standard tools like grep and awk to get this information and
since we have the limitation with the root access, I am not going to add
this. Use the new D-Bus interface to retrieve this information.

> Also, will the patch for 128 bit UUID searching in sdptool get merged into 
> CVS, or did I mess something up again?

The patch is in my todo stack, but I haven't looked at it.

Regards

Marcel




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