1 /*
2 * Copyright (C) 2011 matt mooney <mfm@muteddisk.com>
3 * 2005-2007 Takahiro Hirofuchi
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 #include <sys/types.h>
20 #include <sysfs/libsysfs.h>
21
22 #include <errno.h>
23 #include <stdbool.h>
24 #include <stdint.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28
29 #include <getopt.h>
30 #include <netdb.h>
31 #include <unistd.h>
32
33 #include "usbip_common.h"
34 #include "usbip_network.h"
35 #include "usbip.h"
36
37 static const char usbip_list_usage_string[] =
38 "usbip list [-p|--parsable] <args>\n"
39 " -p, --parsable Parsable list format\n"
40 " -r, --remote=<host> List the exportable USB devices on <host>\n"
41 " -l, --local List the local USB devices\n";
42
usbip_list_usage(void)43 void usbip_list_usage(void)
44 {
45 printf("usage: %s", usbip_list_usage_string);
46 }
47
get_exported_devices(char * host,int sockfd)48 static int get_exported_devices(char *host, int sockfd)
49 {
50 char product_name[100];
51 char class_name[100];
52 struct op_devlist_reply reply;
53 uint16_t code = OP_REP_DEVLIST;
54 struct usbip_usb_device udev;
55 struct usbip_usb_interface uintf;
56 unsigned int i;
57 int j, rc;
58
59 rc = usbip_net_send_op_common(sockfd, OP_REQ_DEVLIST, 0);
60 if (rc < 0) {
61 dbg("usbip_net_send_op_common failed");
62 return -1;
63 }
64
65 rc = usbip_net_recv_op_common(sockfd, &code);
66 if (rc < 0) {
67 dbg("usbip_net_recv_op_common failed");
68 return -1;
69 }
70
71 memset(&reply, 0, sizeof(reply));
72 rc = usbip_net_recv(sockfd, &reply, sizeof(reply));
73 if (rc < 0) {
74 dbg("usbip_net_recv_op_devlist failed");
75 return -1;
76 }
77 PACK_OP_DEVLIST_REPLY(0, &reply);
78 dbg("exportable devices: %d\n", reply.ndev);
79
80 if (reply.ndev == 0) {
81 info("no exportable devices found on %s", host);
82 return 0;
83 }
84
85 printf("Exportable USB devices\n");
86 printf("======================\n");
87 printf(" - %s\n", host);
88
89 for (i = 0; i < reply.ndev; i++) {
90 memset(&udev, 0, sizeof(udev));
91 rc = usbip_net_recv(sockfd, &udev, sizeof(udev));
92 if (rc < 0) {
93 dbg("usbip_net_recv failed: usbip_usb_device[%d]", i);
94 return -1;
95 }
96 usbip_net_pack_usb_device(0, &udev);
97
98 usbip_names_get_product(product_name, sizeof(product_name),
99 udev.idVendor, udev.idProduct);
100 usbip_names_get_class(class_name, sizeof(class_name),
101 udev.bDeviceClass, udev.bDeviceSubClass,
102 udev.bDeviceProtocol);
103 printf("%11s: %s\n", udev.busid, product_name);
104 printf("%11s: %s\n", "", udev.path);
105 printf("%11s: %s\n", "", class_name);
106
107 for (j = 0; j < udev.bNumInterfaces; j++) {
108 rc = usbip_net_recv(sockfd, &uintf, sizeof(uintf));
109 if (rc < 0) {
110 dbg("usbip_net_recv failed: usbip_usb_intf[%d]",
111 j);
112
113 return -1;
114 }
115 usbip_net_pack_usb_interface(0, &uintf);
116
117 usbip_names_get_class(class_name, sizeof(class_name),
118 uintf.bInterfaceClass,
119 uintf.bInterfaceSubClass,
120 uintf.bInterfaceProtocol);
121 printf("%11s: %2d - %s\n", "", j, class_name);
122 }
123 printf("\n");
124 }
125
126 return 0;
127 }
128
list_exported_devices(char * host)129 static int list_exported_devices(char *host)
130 {
131 int rc;
132 int sockfd;
133
134 sockfd = usbip_net_tcp_connect(host, USBIP_PORT_STRING);
135 if (sockfd < 0) {
136 err("could not connect to %s:%s: %s", host,
137 USBIP_PORT_STRING, gai_strerror(sockfd));
138 return -1;
139 }
140 dbg("connected to %s:%s", host, USBIP_PORT_STRING);
141
142 rc = get_exported_devices(host, sockfd);
143 if (rc < 0) {
144 err("failed to get device list from %s", host);
145 return -1;
146 }
147
148 close(sockfd);
149
150 return 0;
151 }
152
print_device(char * busid,char * vendor,char * product,bool parsable)153 static void print_device(char *busid, char *vendor, char *product,
154 bool parsable)
155 {
156 if (parsable)
157 printf("busid=%s#usbid=%.4s:%.4s#", busid, vendor, product);
158 else
159 printf(" - busid %s (%.4s:%.4s)\n", busid, vendor, product);
160 }
161
print_interface(char * busid,char * driver,bool parsable)162 static void print_interface(char *busid, char *driver, bool parsable)
163 {
164 if (parsable)
165 printf("%s=%s#", busid, driver);
166 else
167 printf("%9s%s -> %s\n", "", busid, driver);
168 }
169
is_device(void * x)170 static int is_device(void *x)
171 {
172 struct sysfs_attribute *devpath;
173 struct sysfs_device *dev = x;
174 int ret = 0;
175
176 devpath = sysfs_get_device_attr(dev, "devpath");
177 if (devpath && *devpath->value != '0')
178 ret = 1;
179
180 return ret;
181 }
182
devcmp(void * a,void * b)183 static int devcmp(void *a, void *b)
184 {
185 return strcmp(a, b);
186 }
187
list_devices(bool parsable)188 static int list_devices(bool parsable)
189 {
190 char bus_type[] = "usb";
191 char busid[SYSFS_BUS_ID_SIZE];
192 struct sysfs_bus *ubus;
193 struct sysfs_device *dev;
194 struct sysfs_device *intf;
195 struct sysfs_attribute *idVendor;
196 struct sysfs_attribute *idProduct;
197 struct sysfs_attribute *bConfValue;
198 struct sysfs_attribute *bNumIntfs;
199 struct dlist *devlist;
200 int i;
201 int ret = -1;
202
203 ubus = sysfs_open_bus(bus_type);
204 if (!ubus) {
205 err("could not open %s bus: %s", bus_type, strerror(errno));
206 return -1;
207 }
208
209 devlist = sysfs_get_bus_devices(ubus);
210 if (!devlist) {
211 err("could not get %s bus devices: %s", bus_type,
212 strerror(errno));
213 goto err_out;
214 }
215
216 /* remove interfaces and root hubs from device list */
217 dlist_filter_sort(devlist, is_device, devcmp);
218
219 if (!parsable) {
220 printf("Local USB devices\n");
221 printf("=================\n");
222 }
223 dlist_for_each_data(devlist, dev, struct sysfs_device) {
224 idVendor = sysfs_get_device_attr(dev, "idVendor");
225 idProduct = sysfs_get_device_attr(dev, "idProduct");
226 bConfValue = sysfs_get_device_attr(dev, "bConfigurationValue");
227 bNumIntfs = sysfs_get_device_attr(dev, "bNumInterfaces");
228 if (!idVendor || !idProduct || !bConfValue || !bNumIntfs) {
229 err("problem getting device attributes: %s",
230 strerror(errno));
231 goto err_out;
232 }
233
234 print_device(dev->bus_id, idVendor->value, idProduct->value,
235 parsable);
236
237 for (i = 0; i < atoi(bNumIntfs->value); i++) {
238 snprintf(busid, sizeof(busid), "%s:%.1s.%d",
239 dev->bus_id, bConfValue->value, i);
240 intf = sysfs_open_device(bus_type, busid);
241 if (!intf) {
242 err("could not open device interface: %s",
243 strerror(errno));
244 goto err_out;
245 }
246 print_interface(busid, intf->driver_name, parsable);
247 sysfs_close_device(intf);
248 }
249 printf("\n");
250 }
251
252 ret = 0;
253
254 err_out:
255 sysfs_close_bus(ubus);
256
257 return ret;
258 }
259
usbip_list(int argc,char * argv[])260 int usbip_list(int argc, char *argv[])
261 {
262 static const struct option opts[] = {
263 { "parsable", no_argument, NULL, 'p' },
264 { "remote", required_argument, NULL, 'r' },
265 { "local", no_argument, NULL, 'l' },
266 { NULL, 0, NULL, 0 }
267 };
268
269 bool parsable = false;
270 int opt;
271 int ret = -1;
272
273 if (usbip_names_init(USBIDS_FILE))
274 err("failed to open %s", USBIDS_FILE);
275
276 for (;;) {
277 opt = getopt_long(argc, argv, "pr:l", opts, NULL);
278
279 if (opt == -1)
280 break;
281
282 switch (opt) {
283 case 'p':
284 parsable = true;
285 break;
286 case 'r':
287 ret = list_exported_devices(optarg);
288 goto out;
289 case 'l':
290 ret = list_devices(parsable);
291 goto out;
292 default:
293 goto err_out;
294 }
295 }
296
297 err_out:
298 usbip_list_usage();
299 out:
300 usbip_names_free();
301
302 return ret;
303 }
304