X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=src%2Fusb.c;h=96df219fd734fa168d6347bfeeddad0d2e331f03;hb=47bbc4b531eb8e491115b0dbcb686d23c78235fb;hp=f53119a6aab181b08c2faf338777da9db9db0712;hpb=176d785d33a28a1bb24f2ee483595ec54f7b52b6;p=libsigrok.git

diff --git a/src/usb.c b/src/usb.c
index f53119a6..96df219f 100644
--- a/src/usb.c
+++ b/src/usb.c
@@ -329,8 +329,7 @@ SR_PRIV GSList *sr_usb_find(libusb_context *usb_ctx, const char *conn)
 		if ((mstr = g_match_info_fetch(match, 2)))
 			pid = strtoul(mstr, NULL, 16);
 		g_free(mstr);
-		sr_dbg("Trying to find USB device with VID:PID = %04x:%04x.",
-		       vid, pid);
+		/* Trying to find USB device via VID:PID. */
 	} else {
 		g_match_info_unref(match);
 		g_regex_unref(reg);
@@ -343,8 +342,7 @@ SR_PRIV GSList *sr_usb_find(libusb_context *usb_ctx, const char *conn)
 			if ((mstr = g_match_info_fetch(match, 2)))
 				addr = strtoul(mstr, NULL, 10);
 			g_free(mstr);
-			sr_dbg("Trying to find USB device with bus.address = "
-			       "%d.%d.", bus, addr);
+			/* Trying to find USB device via bus.address. */
 		}
 	}
 	g_match_info_unref(match);
@@ -392,7 +390,7 @@ SR_PRIV GSList *sr_usb_find(libusb_context *usb_ctx, const char *conn)
 	}
 	libusb_free_device_list(devlist, 1);
 
-	sr_dbg("Found %d device(s).", g_slist_length(devices));
+	/* No log message for #devices found (caller will log that). */
 
 	return devices;
 }
@@ -510,3 +508,47 @@ SR_PRIV int usb_get_port_path(libusb_device *dev, char *path, int path_len)
 
 	return SR_OK;
 }
+
+/**
+ * Check the USB configuration to determine if this device has a given 
+ * manufacturer and product string.
+ *
+ * @return TRUE if the device's configuration profile strings
+ *         configuration, FALSE otherwise.
+ */
+SR_PRIV gboolean usb_match_manuf_prod(libusb_device *dev,
+		const char *manufacturer, const char *product)
+{
+	struct libusb_device_descriptor des;
+	struct libusb_device_handle *hdl;
+	gboolean ret;
+	unsigned char strdesc[64];
+
+	hdl = NULL;
+	ret = FALSE;
+	while (!ret) {
+		/* Assume the FW has not been loaded, unless proven wrong. */
+		libusb_get_device_descriptor(dev, &des);
+
+		if (libusb_open(dev, &hdl) != 0)
+			break;
+
+		if (libusb_get_string_descriptor_ascii(hdl,
+				des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
+			break;
+		if (strcmp((const char *)strdesc, manufacturer))
+			break;
+
+		if (libusb_get_string_descriptor_ascii(hdl,
+				des.iProduct, strdesc, sizeof(strdesc)) < 0)
+			break;
+		if (strcmp((const char *)strdesc, product))
+			break;
+
+		ret = TRUE;
+	}
+	if (hdl)
+		libusb_close(hdl);
+
+	return ret;
+}