SHA256
1
0
forked from pool/dhcp
dhcp/dhcp-4.2.1-dhclient-send-hostname-rml.diff

105 lines
3.1 KiB
Diff

diff --git a/client/dhclient.8 b/client/dhclient.8
index 7a3c154..e284210 100644
--- a/client/dhclient.8
+++ b/client/dhclient.8
@@ -64,6 +64,10 @@ dhclient - Dynamic Host Configuration Protocol Client
.I port
]
[
+.B -H
+.I hostname
+]
+[
.B -d
]
[
@@ -305,6 +309,10 @@ If a different port is specified on which the client should listen and
transmit, the client will also use a different destination port -
one less than the specified port.
.TP
+.BI \-H \ hostname
+This flag may be used to specify a client hostname that should be sent to
+the DHCP server. Note, that this option is a SUSE/Novell extension.
+.TP
.BI \-s \ server
Specify the server IP address or fully qualified domain name to use as
a destination for DHCP protocol messages before
diff --git a/client/dhclient.c b/client/dhclient.c
index dc19e8b..bd02cc9 100644
--- a/client/dhclient.c
+++ b/client/dhclient.c
@@ -110,6 +110,7 @@ main(int argc, char **argv) {
int no_dhclient_db = 0;
int no_dhclient_pid = 0;
int no_dhclient_script = 0;
+ char *dhclient_hostname = NULL;
#ifdef DHCPv6
int local_family_set = 0;
#endif /* DHCPv6 */
@@ -220,6 +221,16 @@ main(int argc, char **argv) {
if (++i == argc)
usage();
mockup_relay = argv[i];
+ } else if (!strcmp (argv[i], "-H")) {
+ if (++i == argc || !argv[i] || *(argv[i]) == '\0')
+ usage ();
+ if (strlen (argv[i]) > HOST_NAME_MAX) {
+ log_error("-H option host-name string \"%s\" is too long:"
+ "maximum length is %d characters",
+ argv[i], HOST_NAME_MAX);
+ exit(1);
+ }
+ dhclient_hostname = argv [i];
} else if (!strcmp(argv[i], "-nw")) {
nowait = 1;
} else if (!strcmp(argv[i], "-n")) {
@@ -468,6 +479,32 @@ main(int argc, char **argv) {
/* Parse the dhclient.conf file. */
read_client_conf();
+ /* If the user specified a hostname, send it here and now */
+ if ((dhclient_hostname != NULL) && (*dhclient_hostname != '\0') ) {
+ struct parse *cfile = NULL;
+ char buf[HOST_NAME_MAX + 40];
+ int len;
+
+ snprintf (buf, sizeof(buf), "send host-name \"%s\";", dhclient_hostname);
+ len = strlen(buf);
+
+ status = new_parse (&cfile, -1, buf, len, "host-name option", 0);
+ if (status != ISC_R_SUCCESS)
+ log_fatal ("Cannot parse send host-name statement!");
+
+ for (;;) {
+ const char *val = NULL;
+ int token;
+
+ token = peek_token (&val, (unsigned *)0, cfile);
+ if (token == END_OF_FILE)
+ break;
+
+ parse_client_statement (cfile, NULL, &top_level_config);
+ }
+ end_parse (&cfile);
+ }
+
/* Parse the lease database. */
read_client_leases();
@@ -676,12 +713,12 @@ static void usage()
log_error("Usage: dhclient %s %s",
#ifdef DHCPv6
- "[-4|-6] [-SNTP1dvrx] [-nw] [-p <port>] [-D LL|LLT]",
+ "[-4|-6] [-SNTP1dvrx] [-nw] [-H <hostname>] [-p <port>] [-D LL|LLT]",
#else /* DHCPv6 */
- "[-1dvrx] [-nw] [-p <port>]",
+ "[-1dvrx] [-nw] [-H <hostname>] [-p <port>]",
#endif /* DHCPv6 */
"[-s server]");
- log_error(" [-cf config-file] [-lf lease-file]%s",
+ log_error(" [-cf config-file] [-lf lease-file] %s",
"[-pf pid-file] [-e VAR=val]");
log_fatal(" [-sf script-file] [interface]");
}