1 /* Copyright (c) 2008 The Board of Trustees of The Leland Stanford
4 * We are making the OpenFlow specification and associated documentation
5 * (Software) available for public use and benefit with the expectation
6 * that others will use, modify and enhance the Software and contribute
7 * those enhancements back to the community. However, since we would
8 * like to make the Software available for broadest use, with as few
9 * restrictions as possible permission is hereby granted, free of
10 * charge, to any person obtaining a copy of this Software to deal in
11 * the Software under the copyrights without restriction, including
12 * without limitation the rights to use, copy, modify, merge, publish,
13 * distribute, sublicense, and/or sell copies of the Software, and to
14 * permit persons to whom the Software is furnished to do so, subject to
15 * the following conditions:
17 * The above copyright notice and this permission notice shall be
18 * included in all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
24 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
25 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 * The name and trademarks of copyright holder(s) may NOT be used in
30 * advertising or publicity pertaining to the Software or any
31 * derivatives without specific, written prior permission.
34 #include "dhcp-client.h"
35 #include <arpa/inet.h>
39 #include "command-line.h"
41 #include "fatal-signal.h"
43 #include "poll-loop.h"
47 /* --request-ip: IP address to request from server. If zero, then do not
48 * request a specific IP address. */
49 static struct in_addr request_ip;
51 /* --vendor-class: Vendor class string to include in request. If null, no
52 * vendor class string is included. */
53 static const char *vendor_class;
55 static void parse_options(int argc, char *argv[]);
56 static void usage(void);
57 static void release(void *cli_);
58 static void modify_dhcp_request(struct dhcp_msg *, void *aux);
61 main(int argc, char *argv[])
66 set_program_name(argv[0]);
67 register_fault_handlers();
69 parse_options(argc, argv);
74 fatal(0, "exactly one non-option argument required; "
75 "use --help for help");
78 error = dhclient_create(argv[0], modify_dhcp_request, NULL, NULL, &cli);
80 fatal(error, "dhclient_create failed");
82 dhclient_init(cli, request_ip.s_addr);
83 fatal_signal_add_hook(release, cli);
88 fatal_signal_unblock();
97 struct dhclient *cli = cli_;
98 dhclient_release(cli);
102 modify_dhcp_request(struct dhcp_msg *msg, void *aux UNUSED)
105 dhcp_msg_put_string(msg, DHCP_CODE_VENDOR_CLASS, vendor_class);
110 parse_options(int argc, char *argv[])
113 OPT_REQUEST_IP = UCHAR_MAX + 1,
116 static struct option long_options[] = {
117 {"request-ip", required_argument, 0, OPT_REQUEST_IP },
118 {"vendor-class", required_argument, 0, OPT_VENDOR_CLASS },
119 {"verbose", optional_argument, 0, 'v'},
120 {"help", no_argument, 0, 'h'},
121 {"version", no_argument, 0, 'V'},
124 char *short_options = long_options_to_short_options(long_options);
129 c = getopt_long(argc, argv, short_options, long_options, NULL);
136 if (!inet_aton(optarg, &request_ip)) {
137 fatal(0, "--request-ip argument is not a valid IP address");
141 case OPT_VENDOR_CLASS:
142 vendor_class = optarg;
149 printf("%s "VERSION" compiled "__DATE__" "__TIME__"\n", argv[0]);
153 vlog_set_verbosity(optarg);
169 printf("%s: standalone program for testing OpenFlow DHCP client.\n"
170 "usage: %s [OPTIONS] NETDEV\n"
171 "where NETDEV is a network device (e.g. eth0).\n"
173 " --request-ip=IP request specified IP address (default:\n"
174 " do not request a specific IP)\n"
175 " --vendor-class=STRING use STRING as vendor class (default:\n"
176 " none); use OpenFlow to imitate secchan\n"
178 " -v, --verbose=MODULE:FACILITY:LEVEL configure logging levels\n"
179 " -v, --verbose set maximum verbosity level\n"
180 " -h, --help display this help message\n"
181 " -V, --version display version information\n",
182 program_name, program_name);