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get_udp_unicast_socket() needs to have the client address as an argument

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when sending the request to sockd.

Also, print error messages if sockd returns an invalid fd (< 0).
This commit is contained in:
Nicholas J. Kain 2014-04-15 17:55:28 -04:00
parent a9055b5ca5
commit 18604c5245
1 changed files with 17 additions and 5 deletions
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22
src/dhcp.c
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@ -54,9 +54,15 @@ typedef enum {
LM_RAW
} listen_mode_t;
static int get_udp_unicast_socket(void)
static int get_udp_unicast_socket(struct client_state_t *cs)
{
return request_sockd_fd("u", 1, NULL);
char buf[32];
size_t buflen = 0;
buf[0] = 'u';
buflen += 1;
memcpy(buf + buflen, &cs->clientAddr, sizeof cs->clientAddr);
buflen += sizeof cs->clientAddr;
return request_sockd_fd(buf, buflen, NULL);
}
static int get_raw_broadcast_socket(void)
@ -90,9 +96,12 @@ static ssize_t send_dhcp_cooked(struct client_state_t *cs,
struct dhcpmsg *payload)
{
ssize_t ret = -1;
int fd = get_udp_unicast_socket();
if (fd < 0)
int fd = get_udp_unicast_socket(cs);
if (fd < 0) {
log_error("%s: (%s) get_udp_unicast_socket failed",
client_config.interface, __func__);
goto out;
}
struct sockaddr_in raddr = {
.sin_family = AF_INET,
@ -281,8 +290,11 @@ static ssize_t send_dhcp_raw(struct dhcpmsg *payload)
{
ssize_t ret = -1;
int fd = get_raw_broadcast_socket();
if (fd < 0)
if (fd < 0) {
log_error("%s: (%s) get_raw_broadcast_socket failed",
client_config.interface, __func__);
return ret;
}
// Send packets that are as short as possible.
ssize_t endloc = get_end_option_idx(payload);