int
intdhcrelay(char *ifname, int ifs, int argc, char **argv)
{
char *cmd[] = { DHCRELAY, "-i", ifname, NULL, '\0' };
char fname[SIZE_CONF_TEMP];
int set;
if (NO_ARG(argv[0])) {
set = 0;
argc--;
argv++;
} else
set = 1;
argc--;
argv++;
if ((!set && argc > 1) || (set && argc != 1)) {
printf("%% dhcrelay <relayserver>\n");
printf("%% no dhcrelay [relayserver]\n");
return(0);
}
cmd[3] = argv[0];
snprintf(fname, sizeof(fname), "/var/run/dhcrelay.%s", ifname);
if (set) {
flag_x(fname, X_ENABLE, argv[0]);
cmdargs(DHCRELAY, cmd);
} else {
char server[24], argue[SIZE_CONF_TEMP];
char *killcmd[] = { PKILL, "-xf", NULL, '\0' };
if (conf_dhcrelay(ifname, server, sizeof(server)) == NULL) {
if (errno == ENOENT)
printf("%% No relay configured for %s\n", ifname);
else
printf("%% int_dhcrelay: conf_dhcrelay failed: %s\n", strerror(errno));
return(0);
}
/* if dhcrelay not relaying to specified dhcp server, bail out */
if (argc && strcmp(server, argv[0]) != 0) {
printf("%% Server expected: %s (not %s)\n", server, argv[0]);
return(0);
}
/* delete .enabled file */
flag_x(fname, X_DISABLE, NULL);
/* setup argument list as one argument for pkill -xf */
snprintf(argue, sizeof(argue), "%s %s %s %s", cmd[0], cmd[1], cmd[2], server);
killcmd[2] = argue;
cmdargs(PKILL, killcmd);
}
return(0);
}
int
intdhcrelay(char *ifname, int ifs, int argc, char **argv)
{
char *cmd[] = { DHCRELAY, "-i", ifname, NULL, '\0' };
int set, alen;
struct in_addr notused;
if (NO_ARG(argv[0])) {
set = 0;
argc--;
argv++;
} else
set = 1;
argc--;
argv++;
if ((!set && argc > 1) || (set && argc != 1)) {
printf("%% dhcrelay <relayserver>\n");
printf("%% no dhcrelay [relayserver]\n");
return(0);
}
if (inet_pton(AF_INET, argv[0], ¬used)) {
cmd[3] = argv[0];
} else {
printf("%% Not a valid IPv4 address: %s\n", argv[0]);
return 0;
}
if (set) {
flag_x("dhcrelay", ifname, DB_X_ENABLE, argv[0]);
cmdargs(DHCRELAY, cmd);
} else {
char server[24], argue[SIZE_CONF_TEMP];
char *killcmd[] = { PKILL, "-xf", NULL, '\0' };
if ((alen = conf_dhcrelay(ifname, server, sizeof(server))) < 1)
{
if (alen == 0)
printf("%% No relay configured for %s\n",
ifname);
else
printf("%% int_dhcrelay: conf_dhcrelay failed:"
" %d\n", alen);
return(0);
}
/* bail if dhcrelay not relaying to specified dhcp server */
if (argc && strcmp(server, argv[0]) != 0) {
printf("%% Server expected: %s (not %s)\n", server,
argv[0]);
return(0);
}
flag_x("dhcrelay", ifname, DB_X_REMOVE, NULL);
/* setup argument list as one argument for pkill -xf */
snprintf(argue, sizeof(argue), "%s %s %s %s", cmd[0], cmd[1],
cmd[2], server);
killcmd[3] = argue;
cmdargs(PKILL, killcmd);
}
return(0);
}
