commit d24b8141673530ad65407434918136543c228df1
from: David du Colombier <0intro@gmail.com>
date: Fri Aug 03 19:25:31 2012 UTC

lib9/getnetconn: add support for IPv6

R=rsc
http://codereview.appspot.com/6457077

commit - 3a616eaa80070a1b89b907baacc8b603b02c670e
commit + d24b8141673530ad65407434918136543c228df1
blob - 52303d0739ee05dc81ed53babb1d61b6c3ad8b02
blob + 9fa8a9e0d3ad9cc15c20be0cf7093db74e5d63f1
--- src/lib9/getnetconn.c
+++ src/lib9/getnetconn.c
@@ -5,6 +5,7 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netinet/tcp.h>
+#include <arpa/inet.h>
 #include <sys/un.h>
 #include <errno.h>
 
@@ -20,6 +21,7 @@ convert(int s, struct sockaddr *sa, char **lsys, char 
 {
 	struct sockaddr_un *sun;
 	struct sockaddr_in *sin;
+	struct sockaddr_in6 *sin6;
 	uchar *ip;
 	u32int ipl;
 	socklen_t sn;
@@ -51,6 +53,30 @@ convert(int s, struct sockaddr *sa, char **lsys, char 
 		if(*lsys == nil || *lserv == nil || *laddr == nil)
 			return -1;
 		return 0;
+	case AF_INET6:
+		sin6 = (void*)sa;
+		if (memcmp(&sin6->sin6_addr, &in6addr_any, sizeof(in6addr_any)) == 0)
+			*lsys = strdup("*");
+		else{
+			*lsys = malloc(INET6_ADDRSTRLEN);
+			inet_ntop(AF_INET6, &sin6->sin6_addr, *lsys, INET6_ADDRSTRLEN);
+		}
+		*lserv = smprint("%d", ntohs(sin6->sin6_port));
+		sn = sizeof n;
+		if(getsockopt(s, SOL_SOCKET, SO_TYPE, (void*)&n, &sn) < 0)
+			return -1;
+		if(n == SOCK_STREAM)
+			net = "tcp";
+		else if(n == SOCK_DGRAM)
+			net = "udp";
+		else{
+			werrstr("unknown network type");
+			return -1;
+		}
+		*laddr = smprint("%s!%s!%s", net, *lsys, *lserv);
+		if(*lsys == nil || *lserv == nil || *laddr == nil)
+			return -1;
+		return 0;
 	case AF_UNIX:
 		sun = (void*)sa;
 		*lsys = unknown;
@@ -72,6 +98,7 @@ getnetconninfo(char *dir, int fd)
 	union {
 		struct sockaddr sa;
 		struct sockaddr_in sin;
+		struct sockaddr_in6 sin6;
 		struct sockaddr_un sun;
 	} u;
 	NetConnInfo *nci;