mirror of
https://github.com/osmarks/ngircd.git
synced 2025-03-12 20:18:11 +00:00
b2c0a89f45
this also obsoletes ListenIPv4 and ListenIPv6 options. If Listen is unset, it is treated as Listen="::,0.0.0.0". Note: ListenIPv4 and ListenIPv6 options are still recognized, but ngircd will print a warning if they are used in the config file. Also, some plattforms require that ai_socktype is set in the getaddrinfo() hints structure.
168 lines
3.5 KiB
C
168 lines
3.5 KiB
C
/*
|
|
* Functions for AF_ agnostic ipv4/ipv6 handling.
|
|
*
|
|
* (c) 2008 Florian Westphal <fw@strlen.de>, public domain.
|
|
*/
|
|
|
|
#include "portab.h"
|
|
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#ifdef HAVE_GETADDRINFO
|
|
#include <netdb.h>
|
|
#include <sys/types.h>
|
|
#endif
|
|
|
|
#include "ng_ipaddr.h"
|
|
|
|
GLOBAL bool
|
|
ng_ipaddr_init(ng_ipaddr_t *addr, const char *ip_str, UINT16 port)
|
|
{
|
|
#ifdef HAVE_GETADDRINFO
|
|
int ret;
|
|
char portstr[64];
|
|
struct addrinfo *res0;
|
|
struct addrinfo hints;
|
|
|
|
assert(ip_str);
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_flags = AI_NUMERICHOST;
|
|
|
|
/* some getaddrinfo implementations require that ai_socktype is set. */
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
|
|
/* silly, but ngircd stores UINT16 in server config, not string */
|
|
snprintf(portstr, sizeof(portstr), "%u", (unsigned int) port);
|
|
|
|
ret = getaddrinfo(ip_str, portstr, &hints, &res0);
|
|
assert(ret == 0);
|
|
if (ret != 0)
|
|
return false;
|
|
|
|
assert(sizeof(*addr) >= res0->ai_addrlen);
|
|
if (sizeof(*addr) >= res0->ai_addrlen)
|
|
memcpy(addr, res0->ai_addr, res0->ai_addrlen);
|
|
else
|
|
ret = -1;
|
|
freeaddrinfo(res0);
|
|
return ret == 0;
|
|
#else /* HAVE_GETADDRINFO */
|
|
assert(ip_str);
|
|
addr->sin4.sin_family = AF_INET;
|
|
# ifdef HAVE_INET_ATON
|
|
if (inet_aton(ip_str, &addr->sin4.sin_addr) == 0)
|
|
return false;
|
|
# else
|
|
addr->sin4.sin_addr.s_addr = inet_addr(ip_str);
|
|
if (addr->sin4.sin_addr.s_addr == (unsigned) -1)
|
|
return false;
|
|
# endif
|
|
ng_ipaddr_setport(addr, port);
|
|
return true;
|
|
#endif /* HAVE_GETADDRINFO */
|
|
}
|
|
|
|
|
|
GLOBAL void
|
|
ng_ipaddr_setport(ng_ipaddr_t *a, UINT16 port)
|
|
{
|
|
#ifdef WANT_IPV6
|
|
int af;
|
|
|
|
assert(a != NULL);
|
|
|
|
af = a->sa.sa_family;
|
|
|
|
assert(af == AF_INET || af == AF_INET6);
|
|
|
|
switch (af) {
|
|
case AF_INET:
|
|
a->sin4.sin_port = htons(port);
|
|
break;
|
|
case AF_INET6:
|
|
a->sin6.sin6_port = htons(port);
|
|
break;
|
|
}
|
|
#else /* WANT_IPV6 */
|
|
assert(a != NULL);
|
|
assert(a->sin4.sin_family == AF_INET);
|
|
a->sin4.sin_port = htons(port);
|
|
#endif /* WANT_IPV6 */
|
|
}
|
|
|
|
|
|
|
|
GLOBAL bool
|
|
ng_ipaddr_ipequal(const ng_ipaddr_t *a, const ng_ipaddr_t *b)
|
|
{
|
|
assert(a != NULL);
|
|
assert(b != NULL);
|
|
#ifdef WANT_IPV6
|
|
if (a->sa.sa_family != b->sa.sa_family)
|
|
return false;
|
|
assert(ng_ipaddr_salen(a) == ng_ipaddr_salen(b));
|
|
switch (a->sa.sa_family) {
|
|
case AF_INET6:
|
|
return IN6_ARE_ADDR_EQUAL(&a->sin6.sin6_addr, &b->sin6.sin6_addr);
|
|
case AF_INET:
|
|
return memcmp(&a->sin4.sin_addr, &b->sin4.sin_addr, sizeof(a->sin4.sin_addr)) == 0;
|
|
}
|
|
return false;
|
|
#else
|
|
assert(a->sin4.sin_family == AF_INET);
|
|
assert(b->sin4.sin_family == AF_INET);
|
|
return memcmp(&a->sin4.sin_addr, &b->sin4.sin_addr, sizeof(a->sin4.sin_addr)) == 0;
|
|
#endif
|
|
}
|
|
|
|
|
|
#ifdef WANT_IPV6
|
|
GLOBAL const char *
|
|
ng_ipaddr_tostr(const ng_ipaddr_t *addr)
|
|
{
|
|
static char strbuf[NG_INET_ADDRSTRLEN];
|
|
|
|
strbuf[0] = 0;
|
|
|
|
ng_ipaddr_tostr_r(addr, strbuf);
|
|
return strbuf;
|
|
}
|
|
|
|
|
|
/* str must be at least NG_INET_ADDRSTRLEN bytes long */
|
|
GLOBAL bool
|
|
ng_ipaddr_tostr_r(const ng_ipaddr_t *addr, char *str)
|
|
{
|
|
#ifdef HAVE_GETNAMEINFO
|
|
const struct sockaddr *sa = (const struct sockaddr *) addr;
|
|
int ret;
|
|
|
|
*str = 0;
|
|
|
|
ret = getnameinfo(sa, ng_ipaddr_salen(addr),
|
|
str, NG_INET_ADDRSTRLEN, NULL, 0, NI_NUMERICHOST);
|
|
/*
|
|
* avoid leading ':'.
|
|
* causes mis-interpretation of client host in e.g. /WHOIS
|
|
*/
|
|
if (*str == ':') {
|
|
char tmp[NG_INET_ADDRSTRLEN] = "0";
|
|
ret = getnameinfo(sa, ng_ipaddr_salen(addr),
|
|
tmp+1, sizeof(tmp) -1, NULL, 0, NI_NUMERICHOST);
|
|
if (ret == 0)
|
|
strlcpy(str, tmp, NG_INET_ADDRSTRLEN);
|
|
}
|
|
assert (ret == 0);
|
|
return ret == 0;
|
|
#else
|
|
abort(); /* WANT_IPV6 depends on HAVE_GETNAMEINFO */
|
|
#endif
|
|
}
|
|
|
|
#endif /* WANT_IPV6 */
|
|
|
|
/* -eof- */
|