add arg.h and -d, -i and -c options (untested) - sdhcp - simple dhcp client
(HTM) git clone git://git.codemadness.org/sdhcp
(DIR) Log
(DIR) Files
(DIR) Refs
(DIR) LICENSE
---
(DIR) commit 1c2db38abfb99b98dfcb3e13eab361e741c08d4e
(DIR) parent ff21770ca48baa7851a9e6972e33584d66c3e785
(HTM) Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date: Fri, 25 Apr 2014 22:02:00 +0200
add arg.h and -d, -i and -c options (untested)
Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>
Diffstat:
M sdhcp.c | 27 ++++++++++++++++++++++-----
1 file changed, 22 insertions(+), 5 deletions(-)
---
(DIR) diff --git a/sdhcp.c b/sdhcp.c
@@ -14,6 +14,7 @@
#include <unistd.h>
#include "util.h"
+#include "arg.h"
typedef struct bootp {
unsigned char op [1];
@@ -83,7 +84,7 @@ static unsigned char xid[sizeof bp.xid];
static unsigned char hwaddr[16];
static time_t starttime;
static char *ifname = "eth0";
-static char *cid = "vaio.12340";
+static char *cid = "vaio.12340"; /* TODO sane default value */
static int sock;
/* sav */
static unsigned char server[4];
@@ -93,8 +94,9 @@ static unsigned char router[4];
static unsigned char dns[4];
static unsigned long t1;
-#define IP(...) (unsigned char[4]){__VA_ARGS__}
+static int dflag = 0;
+#define IP(...) (unsigned char[4]){__VA_ARGS__}
static void
hnput(unsigned char *dst, unsigned long long src, size_t n)
@@ -412,10 +414,25 @@ main(int argc, char *argv[])
struct sockaddr addr;
int rnd;
- if(argc > 2)
+ ARGBEGIN {
+ case 'c': /* client-id */
+ strlcpy(cid, EARGF(usage()), sizeof(cid));
+ break;
+ case 'i': /* interface */
+ ifname = EARGF(usage());
+ break;
+ case 'd': /* DNS: update /etc/resolv.conf */
+ dflag = 1;
+ break;
+ default:
+ usage();
+ break;
+ } ARGEND;
+
+ if(argc == 2)
usage();
- else if(argc == 2)
- ifname = argv[1];
+ else if(argc == 1)
+ ifname = argv[0];
signal(SIGALRM, nop);
signal(SIGTERM, cleanexit);