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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * command structure borrowed from udev
4 * (git://git.kernel.org/pub/scm/linux/hotplug/udev.git)
5 *
6 * Copyright (C) 2011 matt mooney <[email protected]>
7 * 2005-2007 Takahiro Hirofuchi
8 */
9
10#include <stdio.h>
11#include <stdlib.h>
12
13#include <getopt.h>
14#include <syslog.h>
15
16#include "usbip_common.h"
17#include "usbip_network.h"
18#include "usbip.h"
19
20static int usbip_help(int argc, char *argv[]);
21static int usbip_version(int argc, char *argv[]);
22
23static const char usbip_version_string[] = PACKAGE_STRING;
24
25static const char usbip_usage_string[] =
26 "usbip [--debug] [--log] [--tcp-port PORT] [version]\n"
27 " [help] <command> <args>\n";
28
29static void usbip_usage(void)
30{
31 printf("usage: %s", usbip_usage_string);
32}
33
34struct command {
35 const char *name;
36 int (*fn)(int argc, char *argv[]);
37 const char *help;
38 void (*usage)(void);
39};
40
41static const struct command cmds[] = {
42 {
43 .name = "help",
44 .fn = usbip_help,
45 .help = NULL,
46 .usage = NULL
47 },
48 {
49 .name = "version",
50 .fn = usbip_version,
51 .help = NULL,
52 .usage = NULL
53 },
54 {
55 .name = "attach",
56 .fn = usbip_attach,
57 .help = "Attach a remote USB device",
58 .usage = usbip_attach_usage
59 },
60 {
61 .name = "detach",
62 .fn = usbip_detach,
63 .help = "Detach a remote USB device",
64 .usage = usbip_detach_usage
65 },
66 {
67 .name = "list",
68 .fn = usbip_list,
69 .help = "List exportable or local USB devices",
70 .usage = usbip_list_usage
71 },
72 {
73 .name = "bind",
74 .fn = usbip_bind,
75 .help = "Bind device to " USBIP_HOST_DRV_NAME ".ko",
76 .usage = usbip_bind_usage
77 },
78 {
79 .name = "unbind",
80 .fn = usbip_unbind,
81 .help = "Unbind device from " USBIP_HOST_DRV_NAME ".ko",
82 .usage = usbip_unbind_usage
83 },
84 {
85 .name = "port",
86 .fn = usbip_port_show,
87 .help = "Show imported USB devices",
88 .usage = NULL
89 },
90 { NULL, NULL, NULL, NULL }
91};
92
93static int usbip_help(int argc, char *argv[])
94{
95 const struct command *cmd;
96 int i;
97 int ret = 0;
98
99 if (argc > 1 && argv++) {
100 for (i = 0; cmds[i].name != NULL; i++)
101 if (!strcmp(cmds[i].name, argv[0]) && cmds[i].usage) {
102 cmds[i].usage();
103 goto done;
104 }
105 ret = -1;
106 }
107
108 usbip_usage();
109 printf("\n");
110 for (cmd = cmds; cmd->name != NULL; cmd++)
111 if (cmd->help != NULL)
112 printf(" %-10s %s\n", cmd->name, cmd->help);
113 printf("\n");
114done:
115 return ret;
116}
117
118static int usbip_version(int argc, char *argv[])
119{
120 (void) argc;
121 (void) argv;
122
123 printf(PROGNAME " (%s)\n", usbip_version_string);
124 return 0;
125}
126
127static int run_command(const struct command *cmd, int argc, char *argv[])
128{
129 dbg("running command: `%s'", cmd->name);
130 return cmd->fn(argc, argv);
131}
132
133int main(int argc, char *argv[])
134{
135 static const struct option opts[] = {
136 { "debug", no_argument, NULL, 'd' },
137 { "log", no_argument, NULL, 'l' },
138 { "tcp-port", required_argument, NULL, 't' },
139 { NULL, 0, NULL, 0 }
140 };
141
142 char *cmd;
143 int opt;
144 int i, rc = -1;
145
146 usbip_use_stderr = 1;
147 opterr = 0;
148 for (;;) {
149 opt = getopt_long(argc, argv, "+dlt:", opts, NULL);
150
151 if (opt == -1)
152 break;
153
154 switch (opt) {
155 case 'd':
156 usbip_use_debug = 1;
157 break;
158 case 'l':
159 usbip_use_syslog = 1;
160 openlog("", LOG_PID, LOG_USER);
161 break;
162 case 't':
163 usbip_setup_port_number(optarg);
164 break;
165 case '?':
166 printf("usbip: invalid option\n");
167 /* Terminate after printing error */
168 /* FALLTHRU */
169 default:
170 usbip_usage();
171 goto out;
172 }
173 }
174
175 cmd = argv[optind];
176 if (cmd) {
177 for (i = 0; cmds[i].name != NULL; i++)
178 if (!strcmp(cmds[i].name, cmd)) {
179 argc -= optind;
180 argv += optind;
181 optind = 0;
182 rc = run_command(&cmds[i], argc, argv);
183 goto out;
184 }
185 }
186
187 /* invalid command */
188 usbip_help(0, NULL);
189out:
190 return (rc > -1 ? EXIT_SUCCESS : EXIT_FAILURE);
191}