--- /dev/null
+/*
+ * This file is part of the libserialport project.
+ *
+ * Copyright (C) 2014 Aurelien Jacobs <aurel@gnuage.org>
+ *
+ * This program 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 3 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 Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "libserialport.h"
+#include "libserialport_internal.h"
+
+enum sp_return get_port_details(struct sp_port *port)
+{
+ /* Description limited to 127 char,
+ anything longer would not be user friendly anyway */
+ char description[128];
+ int bus, address, vid, pid = -1;
+ char manufacturer[128], product[128], serial[128];
+ char baddr[32];
+ const char dir_name[] = "/sys/class/tty/%s/device/%s%s";
+ char sub_dir[32] = "", file_name[PATH_MAX];
+ char *ptr, *dev = port->name + 5;
+ FILE *file;
+ int i, count;
+
+ if (strncmp(port->name, "/dev/", 5))
+ RETURN_ERROR(SP_ERR_ARG, "Device name not recognized (%s)", port->name);
+
+ snprintf(file_name, sizeof(file_name), "/sys/class/tty/%s", dev);
+ count = readlink(file_name, file_name, sizeof(file_name));
+ if (count <= 0 || count >= (int) sizeof(file_name)-1)
+ RETURN_ERROR(SP_ERR_ARG, "Device not found (%s)", port->name);
+ file_name[count] = 0;
+ if (strstr(file_name, "bluetooth"))
+ port->transport = SP_TRANSPORT_BLUETOOTH;
+ else if (strstr(file_name, "usb"))
+ port->transport = SP_TRANSPORT_USB;
+
+ if (port->transport == SP_TRANSPORT_USB) {
+ for (i=0; i<5; i++) {
+ strcat(sub_dir, "../");
+
+ snprintf(file_name, sizeof(file_name), dir_name, dev, sub_dir, "busnum");
+ if (!(file = fopen(file_name, "r")))
+ continue;
+ count = fscanf(file, "%d", &bus);
+ fclose(file);
+ if (count != 1)
+ continue;
+
+ snprintf(file_name, sizeof(file_name), dir_name, dev, sub_dir, "devnum");
+ if (!(file = fopen(file_name, "r")))
+ continue;
+ count = fscanf(file, "%d", &address);
+ fclose(file);
+ if (count != 1)
+ continue;
+
+ snprintf(file_name, sizeof(file_name), dir_name, dev, sub_dir, "idVendor");
+ if (!(file = fopen(file_name, "r")))
+ continue;
+ count = fscanf(file, "%4x", &vid);
+ fclose(file);
+ if (count != 1)
+ continue;
+
+ snprintf(file_name, sizeof(file_name), dir_name, dev, sub_dir, "idProduct");
+ if (!(file = fopen(file_name, "r")))
+ continue;
+ count = fscanf(file, "%4x", &pid);
+ fclose(file);
+ if (count != 1)
+ continue;
+
+ port->usb_bus = bus;
+ port->usb_address = address;
+ port->usb_vid = vid;
+ port->usb_pid = pid;
+
+ snprintf(file_name, sizeof(file_name), dir_name, dev, sub_dir, "product");
+ if ((file = fopen(file_name, "r"))) {
+ if ((ptr = fgets(description, sizeof(description), file))) {
+ ptr = description + strlen(description) - 1;
+ if (ptr >= description && *ptr == '\n')
+ *ptr = 0;
+ port->description = strdup(description);
+ }
+ fclose(file);
+ }
+ if (!file || !ptr)
+ port->description = strdup(dev);
+
+ snprintf(file_name, sizeof(file_name), dir_name, dev, sub_dir, "manufacturer");
+ if ((file = fopen(file_name, "r"))) {
+ if ((ptr = fgets(manufacturer, sizeof(manufacturer), file))) {
+ ptr = manufacturer + strlen(manufacturer) - 1;
+ if (ptr >= manufacturer && *ptr == '\n')
+ *ptr = 0;
+ port->usb_manufacturer = strdup(manufacturer);
+ }
+ fclose(file);
+ }
+
+ snprintf(file_name, sizeof(file_name), dir_name, dev, sub_dir, "product");
+ if ((file = fopen(file_name, "r"))) {
+ if ((ptr = fgets(product, sizeof(product), file))) {
+ ptr = product + strlen(product) - 1;
+ if (ptr >= product && *ptr == '\n')
+ *ptr = 0;
+ port->usb_product = strdup(product);
+ }
+ fclose(file);
+ }
+
+ snprintf(file_name, sizeof(file_name), dir_name, dev, sub_dir, "serial");
+ if ((file = fopen(file_name, "r"))) {
+ if ((ptr = fgets(serial, sizeof(serial), file))) {
+ ptr = serial + strlen(serial) - 1;
+ if (ptr >= serial && *ptr == '\n')
+ *ptr = 0;
+ port->usb_serial = strdup(serial);
+ }
+ fclose(file);
+ }
+
+ break;
+ }
+ } else {
+ port->description = strdup(dev);
+
+ if (port->transport == SP_TRANSPORT_BLUETOOTH) {
+ snprintf(file_name, sizeof(file_name), dir_name, dev, "", "address");
+ if ((file = fopen(file_name, "r"))) {
+ if ((ptr = fgets(baddr, sizeof(baddr), file))) {
+ ptr = baddr + strlen(baddr) - 1;
+ if (ptr >= baddr && *ptr == '\n')
+ *ptr = 0;
+ port->bluetooth_address = strdup(baddr);
+ }
+ fclose(file);
+ }
+ }
+ }
+
+ RETURN_OK();
+}
projects / libserialport.git / blobdiff