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[MEDIUM] use getaddrinfo to resolve names if gethostbyname fail

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Function gethostbyname is deprecated since IEEE Std 1003.1-2008 and
was replaced by getaddrinfo (available since IEEE Std 1003.1-2004).
Contrary to gethostbyname, getaddrinfo is specified to support both
IPv4 and IPv4 addresses.
Since some libc doesn't handle getaddrinfo properly, constant
USE_GETADDRINFO must be defined at compile time to enable use of
getaddrinfo.
This commit is contained in:
David du Colombier 2011-03-17 10:40:16 +01:00 committed by Willy Tarreau
parent 2dff0c28e8
commit d5f4328efd
1 changed files with 27 additions and 1 deletions
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28
src/standard.c
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@ -265,8 +265,34 @@ struct sockaddr_storage *str2ip(const char *str)
((struct sockaddr_in6 *)&sa)->sin6_addr = *(struct in6_addr *) *(he->h_addr_list);
return &sa;
}
/* unsupported address family */
}
#ifdef USE_GETADDRINFO
else {
struct addrinfo hints, *result;
memset(&result, 0, sizeof(result));
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_DGRAM;
hints.ai_flags = AI_PASSIVE;
hints.ai_protocol = 0;
if (getaddrinfo(str, NULL, &hints, &result) == 0) {
sa.ss_family = result->ai_family;
switch (result->ai_family) {
case AF_INET:
memcpy((struct sockaddr_in *)&sa, result->ai_addr, result->ai_addrlen);
return &sa;
case AF_INET6:
memcpy((struct sockaddr_in6 *)&sa, result->ai_addr, result->ai_addrlen);
return &sa;
}
}
freeaddrinfo(result);
}
#endif
/* unsupported address family */
return NULL;
}