Libdnsres provides a non-blocking thread-safe API for resolving DNS names. It

requires that your main application is built on top of libevent. Libdnsres' API
essentially mirrors the traditional gethostbyname and getaddrinfo interfaces.
All return values have been replaced by callbacks instead.

The code borrows heavily from the BSD resolver library. In fact, it is an
extremely ugly hack to make the BSD resolver library non-blocking and
thread-safe without changing the API too much.

WWW: http://www.monkey.org/~provos/libdnsres/

PR:		ports/93365
Submitted by:	Phil Oleson <oz@nixil.net>

devel/Makefile

@@ -460,6 +460,7 @@
     SUBDIR += libdaemon
     SUBDIR += libdict
     SUBDIR += libdlmalloc
+    SUBDIR += libdnsres
     SUBDIR += libds
     SUBDIR += libdsp
     SUBDIR += libdwarf

devel/libdnsres/Makefile

@@ -0,0 +1,38 @@
+# New ports collection makefile for:	libdnsres
+# Date created:				Fri Feb  3 18:15:51 MST 2006
+# Whom:					Phil Oleson <oz@nixil.net>
+#
+# $FreeBSD$
+#
+
+PORTNAME=	libdnsres
+PORTVERSION=	0.1a
+CATEGORIES=	devel
+MASTER_SITES=	http://monkey.org/~provos/
+
+MAINTAINER=	oz@nixil.net
+COMMENT=	Provides a non-blocking thread-safe API for resolving DNS names
+
+BUILD_DEPENDS=	${LOCALBASE}/lib/libevent.a:${PORTSDIR}/devel/libevent
+
+GNU_CONFIGURE=	yes
+USE_AUTOTOOLS=	libtool:15
+INSTALLS_SHLIB=	yes
+
+PLIST_SUB+=	PORTVERSION="${PORTVERSION}"
+
+MAN3=	dnsres.3
+MLINKS=	dnsres.3 dnsres_init.3 dnsres.3 dnsres_gethostbyname.3 \
+	dnsres.3 dnsres_gethostbyname2.3 dnsres.3 dnsres_gethostbyaddr.3 \
+	dnsres.3 dnsres_getaddrinfo.3
+
+.include <bsd.port.pre.mk>
+
+.if ${OSVERSION} >= 700014
+BROKEN=		Does not compile on FreeBSD >= 7.0
+.endif
+
+post-patch:
+	@${REINPLACE_CMD} -e 's,CFLAGS =,CFLAGS +=,' ${WRKSRC}/Makefile.in
+
+.include <bsd.port.post.mk>

devel/libdnsres/distinfo

@@ -0,0 +1,3 @@
+MD5 (libdnsres-0.1a.tar.gz) = 069cc39d7ddf85c9be9ada679d5363c2
+SHA256 (libdnsres-0.1a.tar.gz) = c0b94f27cb537eed42bc32ca9771f0955f717c66d34d1361e0a75600c6589307
+SIZE (libdnsres-0.1a.tar.gz) = 360583

devel/libdnsres/files/patch-dnsres.3

@@ -0,0 +1,38 @@
+--- dnsres.3.orig	Tue Feb 14 15:17:58 2006
++++ dnsres.3	Tue Feb 14 16:15:58 2006
+@@ -38,17 +38,20 @@
+ .Nm dnsres_getaddrinfo
+ .Nd non blocking DNS resolving library
+ .Sh SYNOPSIS
++.Fd #include <sys/types.h>
++.Fd #include <sys/socket.h>
++.Fd #include <netdb.h>
+ .Fd #include <dnsres.h>
+ .Ft int
+ .Fn dnsres_init "struct dnsres *_resp"
+ .Ft void
+-.Fn dnsres_gethostbyname "struct dnsres* res" "const char *name" "void (*cb)(struct hostent *hp, int error, void *arg" "void *arg"
++.Fn dnsres_gethostbyname "struct dnsres *res" "const char *name" "void (*cb)(struct hostent *hp, int error, void *arg)" "void *arg"
+ .Ft void
+-.Fn dnsres_gethostbyname2 "const char *name" "int af" "void (*cb)(struct hostent *hp, int error, void *arg" "void *arg"
++.Fn dnsres_gethostbyname2 "struct dnsres *res" "const char *name" "int af" "void (*cb)(struct hostent *hp, int error, void *arg)" "void *arg"
+ .Ft void
+-.Fn dnsres_gethostbyaddr "const char *addr" "int len" "int af" "void (*cb)(struct hostent *hp, int error, void *arg" "void *arg"
++.Fn dnsres_gethostbyaddr "struct dnsres *res" "const char *addr" "int len" "int af" "void (*cb)(struct hostent *hp, int error, void *arg)" "void *arg"
+ .Ft void
+-.Fn dnsres_getaddrinfo "struct dnsres *" "const char *" "const char *" "const struct addrinfo *" "void (*)(struct addrinfo *, int, void *)" "void *";
++.Fn dnsres_getaddrinfo "struct dnsres *res" "const char *hostname" "const char *servname" "const struct addrinfo *hints" "void (*cb)(struct addrinfo *ai, int res, void *arg)" "void *arg"
+ .Sh DESCRIPTION
+ The
+ .Fn dnsres_init
+@@ -134,6 +137,10 @@
+ The only address family currently supported is
+ .Dv AF_INET .
+ .Pp
++The
++.Fn dnsres_getaddrinfo
++function is used to get a list of IP addresses and port
++numbers for host hostname and service servname.  
+ .Sh ENVIRONMENT
+ .Bl -tag -width HOSTALIASES
+ .It HOSTALIASES

devel/libdnsres/files/patch-test-simple_test.c

@@ -0,0 +1,11 @@
+--- test/simple_test.c.old	Fri Feb  3 19:18:27 2006
++++ test/simple_test.c	Fri Feb  3 19:18:48 2006
+@@ -47,7 +47,7 @@
+ #include <unistd.h>
+ #include <ctype.h>
+ #include <fcntl.h>
+-
++#include <sys/time.h>
+ #include <event.h>
+ 
+ #include "dnsres.h"

devel/libdnsres/pkg-descr

@@ -0,0 +1,10 @@
+Libdnsres provides a non-blocking thread-safe API for resolving DNS names.  It
+requires that your main application is built on top of libevent. Libdnsres' API
+essentially mirrors the traditional gethostbyname and getaddrinfo interfaces. 
+All return values have been replaced by callbacks instead.
+
+The code borrows heavily from the BSD resolver library. In fact, it is an 
+extremely ugly hack to make the BSD resolver library non-blocking and 
+thread-safe without changing the API too much. 
+
+WWW: http://www.monkey.org/~provos/libdnsres/

devel/libdnsres/pkg-plist

@@ -0,0 +1,4 @@
+include/dnsres.h
+lib/libdnsres.a
+lib/libdnsres.so
+lib/libdnsres.so.0