X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=lib%2Ffake-getaddrinfo.c;h=0c27025bd19fdce5e92e83a35189dd73d252664e;hb=f02d3ed3e135b5326003e7f69f8331ff6a3cc219;hp=0c9fae94dda83b5d18f67256cf9b1c372b29a87f;hpb=03995ca52ee31ed505902a3c8c3d1119988c8497;p=tinc

diff --git a/lib/fake-getaddrinfo.c b/lib/fake-getaddrinfo.c
index 0c9fae94..0c27025b 100644
--- a/lib/fake-getaddrinfo.c
+++ b/lib/fake-getaddrinfo.c
@@ -14,15 +14,17 @@
 #include "ipv4.h"
 #include "ipv6.h"
 #include "fake-getaddrinfo.h"
+#include "xalloc.h"
 
 #ifndef HAVE_GAI_STRERROR
-char *gai_strerror(int ecode)
-{
+char *gai_strerror(int ecode) {
 	switch (ecode) {
 		case EAI_NODATA:
 			return "No address associated with hostname";
 		case EAI_MEMORY:
 			return "Memory allocation failure";
+		case EAI_FAMILY:
+			return "Address family not supported";
 		default:
 			return "Unknown error";
 	}
@@ -30,8 +32,7 @@ char *gai_strerror(int ecode)
 #endif /* !HAVE_GAI_STRERROR */
 
 #ifndef HAVE_FREEADDRINFO
-void freeaddrinfo(struct addrinfo *ai)
-{
+void freeaddrinfo(struct addrinfo *ai) {
 	struct addrinfo *next;
 
 	while(ai) {
@@ -43,8 +44,7 @@ void freeaddrinfo(struct addrinfo *ai)
 #endif /* !HAVE_FREEADDRINFO */
 
 #ifndef HAVE_GETADDRINFO
-static struct addrinfo *malloc_ai(uint16_t port, uint32_t addr)
-{
+static struct addrinfo *malloc_ai(uint16_t port, uint32_t addr) {
 	struct addrinfo *ai;
 
 	ai = xmalloc_and_zero(sizeof(struct addrinfo) + sizeof(struct sockaddr_in));
@@ -59,14 +59,16 @@ static struct addrinfo *malloc_ai(uint16_t port, uint32_t addr)
 	return ai;
 }
 
-int getaddrinfo(const char *hostname, const char *servname, const struct addrinfo *hints, struct addrinfo **res)
-{
+int getaddrinfo(const char *hostname, const char *servname, const struct addrinfo *hints, struct addrinfo **res) {
 	struct addrinfo *prev = NULL;
 	struct hostent *hp;
 	struct in_addr in = {0};
 	int i;
 	uint16_t port = 0;
 
+	if(hints && hints->ai_family != AF_INET && hints->ai_family != AF_UNSPEC)
+		return EAI_FAMILY;
+
 	if (servname)
 		port = htons(atoi(servname));
 
@@ -82,7 +84,7 @@ int getaddrinfo(const char *hostname, const char *servname, const struct addrinf
 	
 	hp = gethostbyname(hostname);
 
-	if(!hp || !hp->h_addr_list[0])
+	if(!hp || !hp->h_addr_list || !hp->h_addr_list[0])
 		return EAI_NODATA;
 
 	for (i = 0; hp->h_addr_list[i]; i++) {