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cleanup in dns.c

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This commit is contained in:
Bjorn Andersson 2006-06-11 13:13:20 +00:00
parent b1dbcc664b
commit 0775344744
1 changed files with 45 additions and 45 deletions
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90
dns.c
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@ -109,6 +109,50 @@ open_dns(const char *host, const char *domain)
return fd; return fd;
} }
int
open_dnsd(const char *domain)
{
int fd;
int flag;
struct sockaddr_in addr;
bzero(&addr, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(53);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
fd = socket(AF_INET, SOCK_DGRAM, 0);
if(fd < 0) {
warn("socket");
return 0;
}
flag = 1;
#ifdef SO_REUSEPORT
setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &flag, sizeof(flag));
#endif
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &flag, sizeof(flag));
if(bind(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
warn("bind");
return 0;
}
printf("Opened UDP socket\n");
// Save top domain used
strncpy(topdomain, domain, sizeof(topdomain) - 2);
topdomain[sizeof(topdomain) - 1] = 0;
packetlen = 0;
delayed_q_type = 0;
delayed_q_id = 0;
delayed_q_fromlen = 0;
return fd;
}
void void
close_dns(int fd) close_dns(int fd)
{ {
@ -205,12 +249,11 @@ dns_query(int fd, int id, char *host, int type)
sendto(fd, buf, len, 0, (struct sockaddr*)&peer, peerlen); sendto(fd, buf, len, 0, (struct sockaddr*)&peer, peerlen);
} }
static char to_hex[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
static void static void
put_hex(char *p, char h) put_hex(char *p, char h)
{ {
int t; int t;
static const char to_hex[] = "0123456789ABCDEF";
t = (h & 0xF0) >> 4; t = (h & 0xF0) >> 4;
p[0] = to_hex[t]; p[0] = to_hex[t];
@ -502,49 +545,6 @@ decodepacket(const char *name, struct packet *packet)
return len; return len;
} }
int
open_dnsd(const char *domain)
{
int fd;
int flag;
struct sockaddr_in addr;
bzero(&addr, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(53);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
fd = socket(AF_INET, SOCK_DGRAM, 0);
if(fd < 0) {
warn("socket");
return 0;
}
flag = 1;
#ifdef SO_REUSEPORT
setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &flag, sizeof(flag));
#endif
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &flag, sizeof(flag));
if(bind(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
warn("bind");
return 0;
}
printf("Opened UDP socket\n");
// Save top domain used
strncpy(topdomain, domain, sizeof(topdomain) - 2);
topdomain[sizeof(topdomain) - 1] = 0;
packetlen = 0;
delayed_q_type = 0;
delayed_q_id = 0;
delayed_q_fromlen = 0;
return fd;
}
void void
close_dnsd(int fd) close_dnsd(int fd)
{ {