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ipfw2.c

Show First 20 Lines • Show All 3,983 Lines • ▼ Show 20 Lines	chkarg:

case TOK_FORWARD: {		case TOK_FORWARD: {
/*		/*
* Locate the address-port separator (':' or ',').		* Locate the address-port separator (':' or ',').
* Could be one of the following:		* Could be one of the following:
* hostname:port		* hostname:port
* IPv4 a.b.c.d,port		* IPv4 a.b.c.d,port
* IPv4 a.b.c.d:port		* IPv4 a.b.c.d:port
		* IPv4 [a.b.c.d]:port
		markjUnsubmitted Not Done Inline Actions Hmm, is this standard syntax for IPv4 addresses? I have never seen it. markj: Hmm, is this standard syntax for IPv4 addresses? I have never seen it.
		donnerUnsubmitted Not Done Inline Actions No, but a canonical extension. donner: No, but a canonical extension.
* IPv6 w:x:y::z,port		* IPv6 w:x:y::z,port
* The ':' can only be used with hostname and IPv4 address.		* IPv6 [w:x:y::z]:port
* XXX-BZ Should we also support [w:x:y::z]:port?
*/		*/
struct sockaddr_storage result;		struct sockaddr_storage result;
struct addrinfo *res;		struct addrinfo *res;
char s, end;		char s, end;
int family;		int family;
u_short port_number;		u_short port_number = 0;

NEED1("missing forward address[:port]");		NEED1("missing forward address[:port]");

		if (_substrcmp(*av, "tablearg") == 0) {
		family = PF_INET;
		((struct sockaddr_in*)&result)->sin_addr.s_addr =
		INADDR_ANY;
		} else {
/*		/*
		* Are we an bracket-enclosed IPv6 address?
		*/
		if (strchr(*av, '['))
		(*av)++;

		/*
* locate the address-port separator (':' or ',')		* locate the address-port separator (':' or ',')
*/		*/
s = strchr(*av, ',');		s = strchr(*av, ',');
if (s == NULL) {		if (s == NULL) {
		char ptr = strchr(av, ']');
		/* Prevent erroneous parsing on brackets. */
		if (ptr)
		*(ptr++) = '\0';
		else
		ptr = *av;

/* Distinguish between IPv4:port and IPv6 cases. */		/* Distinguish between IPv4:port and IPv6 cases. */
s = strchr(*av, ':');		s = strchr(ptr, ':');
if (s && strchr(s+1, ':'))		if (s && strchr(s+1, ':'))
s = NULL; /* no port */		s = NULL; /* no port */
}		}

port_number = 0;
if (s != NULL) {		if (s != NULL) {
/* Terminate host portion and set s to start of port. */		/* Terminate host portion and set s to start of port. */
*(s++) = '\0';		*(s++) = '\0';
i = strtoport(s, &end, 0 /* base /, 0 / proto */);		i = strtoport(s, &end, 0 /* base /, 0 / proto */);
if (s == end)		if (s == end)
errx(EX_DATAERR,		errx(EX_DATAERR,
"illegal forwarding port ``%s''", s);		"illegal forwarding port ``%s''", s);
port_number = (u_short)i;		port_number = (u_short) i;
		markjUnsubmitted Not Done Inline Actions Per style(9), casts are not followed by a space. markj: Per style(9), casts are not followed by a space.
}		}

if (_substrcmp(*av, "tablearg") == 0) {
family = PF_INET;
((struct sockaddr_in*)&result)->sin_addr.s_addr =
INADDR_ANY;
} else {
/*		/*
* Resolve the host name or address to a family and a		* Resolve the host name or address to a family and a
* network representation of the address.		* network representation of the address.
*/		*/
if (getaddrinfo(*av, NULL, NULL, &res))		if (getaddrinfo(*av, NULL, NULL, &res))
errx(EX_DATAERR, NULL);		errx(EX_DATAERR, NULL);
/* Just use the first host in the answer. */		/* Just use the first host in the answer. */
family = res->ai_family;		family = res->ai_family;
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