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udhcp: optional support for non-standard DHCP ports (+300 bytes when selected)

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This commit is contained in:
Denis Vlasenko
2008-02-04 13:12:16 +00:00
parent e8ef7ec7de
commit d55fe3e595
10 changed files with 79 additions and 14 deletions
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16
networking/udhcp/dhcpd.c
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@ -12,6 +12,7 @@
#include <syslog.h>
#include "common.h"
#include "dhcpc.h"
#include "dhcpd.h"
#include "options.h"
@ -35,8 +36,14 @@ int udhcpd_main(int argc, char **argv)
unsigned opt;
struct option_set *option;
struct dhcpOfferedAddr *lease, static_lease;
USE_FEATURE_UDHCP_PORT(char *str_P;)
opt = getopt32(argv, "fS");
#if ENABLE_FEATURE_UDHCP_PORT
SERVER_PORT = 67;
CLIENT_PORT = 68;
#endif
opt = getopt32(argv, "fS" USE_FEATURE_UDHCP_PORT("P:", &str_P));
argv += optind;
if (!(opt & 1)) { /* no -f */
@ -48,7 +55,12 @@ int udhcpd_main(int argc, char **argv)
openlog(applet_name, LOG_PID, LOG_LOCAL0);
logmode |= LOGMODE_SYSLOG;
}
#if ENABLE_FEATURE_UDHCP_PORT
if (opt & 4) { /* -P */
SERVER_PORT = xatou16(str_P);
CLIENT_PORT = SERVER_PORT + 1;
}
#endif
/* Would rather not do read_config before daemonization -
* otherwise NOMMU machines will parse config twice */
read_config(argv[0] ? argv[0] : DHCPD_CONF_FILE);