3 files changed, 124 insertions, 22 deletions

diff --git a/makefile b/makefile
index 8e9e967..934485b 100644
--- a/makefile
+++ b/makefile
@@ -1,13 +1,23 @@
-PLAT?= macosx
+# luasocket makefile
+#
+# see src/makefile for description of how to customize the build
+#
+# Targets:
+#   install       install system independent support
+#   install-unix  also install unix-only support
+#   install-both  install both lua5.1 and lua5.2 socket support
+#   print         print the build settings
+
+PLAT?= linux
 PLATS= macosx linux win32
 
-#------
-# Hopefully no need to change anything below this line
-#
 all: $(PLAT)
 
 $(PLATS) none install install-unix local clean:
-        @cd src; $(MAKE) $@
+        $(MAKE) -C src $@
+
+print:
+        $(MAKE) -C src $@
 
 test:
         lua test/hello.lua
diff --git a/src/inet.c b/src/inet.c
index 5823c36..55e89d7 100644
--- a/src/inet.c
+++ b/src/inet.c
@@ -16,6 +16,7 @@
 static int inet_global_toip(lua_State *L);
 static int inet_global_getaddrinfo(lua_State *L);
 static int inet_global_tohostname(lua_State *L);
+static int inet_global_getnameinfo(lua_State *L);
 static void inet_pushresolved(lua_State *L, struct hostent *hp);
 static int inet_global_gethostname(lua_State *L);
 
@@ -24,6 +25,7 @@ static luaL_Reg func[] = {
     { "toip", inet_global_toip},
     { "getaddrinfo", inet_global_getaddrinfo},
     { "tohostname", inet_global_tohostname},
+    { "getnameinfo", inet_global_getnameinfo},
     { "gethostname", inet_global_gethostname},
     { NULL, NULL}
 };
@@ -76,6 +78,52 @@ static int inet_global_tohostname(lua_State *L) {
     return 2;
 }
 
+static int inet_global_getnameinfo(lua_State *L) {
+    int i, ret;
+    char host[1024];
+    char serv[32];
+    struct addrinfo hints;
+    struct addrinfo *resolved, *iter;
+    const char *node = luaL_optstring(L, 1, NULL);
+    const char *service = luaL_optstring(L, 2, NULL);
+
+    if (!(node || service))
+        luaL_error(L, "You have to specify a hostname, a service, or both");
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_family = PF_UNSPEC;
+
+    /* getaddrinfo must get a node and a service argument */
+    ret = getaddrinfo(node ? node : "127.0.0.1", service ? service : "7",
+        &hints, &resolved);
+    if (ret != 0) {
+        lua_pushnil(L);
+        lua_pushstring(L, socket_gaistrerror(ret));
+        return 2;
+    }
+
+    lua_newtable(L);
+    for (i = 1, iter = resolved; iter; i++, iter = iter->ai_next) {
+        getnameinfo(iter->ai_addr, iter->ai_addrlen, host,
+            node ? sizeof(host) : 0, serv, service ? sizeof(serv) : 0, 0);
+
+        if (node) {
+            lua_pushnumber(L, i);
+            lua_pushstring(L, host);
+            lua_settable(L, -3);
+        }
+    }
+    freeaddrinfo(resolved);
+
+    if (service) {
+        lua_pushstring(L, serv);
+        return 2;
+    } else {
+        return 1;
+    }
+}
+
 /*-------------------------------------------------------------------------*\
 * Returns all information provided by the resolver given a host name
 * or ip address
diff --git a/src/makefile b/src/makefile
index 6225ce4..4df62bd 100644
--- a/src/makefile
+++ b/src/makefile
@@ -1,21 +1,65 @@
-PLAT?=macosx
+# luasocket src/makefile
+#
+# Definitions in this section can be overriden on the command line or in the
+# environment.
+#
+# These are equivalent:
+#
+#    export PLAT=linux DEBUG=DEBUG LUAV=5.2 prefix=/sw
+#    make
+#
+# and
+#
+#   make PLAT=linux DEBUG=DEBUG LUAV=5.2 prefix=/sw
+
+# PLAT: linux macosx win32
+# platform to build for
+PLAT?=linux
+
+# LUAV: 5.1 5.2
+# lua version to build against
 LUAV?=5.1
-prefix=../../../build/lua/$(LUAV)
-#prefix=/usr/local
-#prefix=/opt/local
-#prefix=.
 
-LUAINC_macosx=../../../build/lua/$(LUAV)/include
-#LUAINC_macosx=/opt/local/include
-#LUAINC_macosx=../../../../projects/lua_env/luaenv/lua_versions/lua-5.2.0-beta/src
-#LUAINC_macosx=../../../../projects/lua_env/luaenv/lua_versions/lua-5.1.4/src
+# DEBUG: NODEBUG DEBUG
+# debug mode causes luasocket to collect and returns timing information useful
+# for testing and debugging luasocket itself
+DEBUG?=NODEBUG
 
-#LUAINC_linux=/usr/local/include/lua$(LUAV)
-LUAINC_linux=/usr/include/lua$(LUAV)
-#LUAINC_linux=/usr/local/include
+# prefix: /usr/local /usr /opt/local /sw
+# the top of the default install tree
+prefix?=/usr/local
+
+# where lua headers are found for macosx builds
+# LUAINC_macosx: /opt/local/include
+LUAINC_macosx?=/opt/local/include
+# FIXME default should be where fink puts lua
+
+# LUAINC_linux: /usr/include/lua$(LUAV) /usr/local/include /usr/local/include/lua$(LUAV)
+# where lua headers are found for linux builds
+LUAINC_linux?=/usr/include/lua$(LUAV)
+
+# LUAINC_win32:
+# LUALIB_win32:
+# where lua headers and libraries are found for win32 builds
+LUAINC_win32?="../../lua-5.1.3/src"
+LUALIB_win32?="../../lua-5.1.3"
+# FIXME default should be where lua-for-windows puts lua
+
+# DESTDIR: (no default)
+# used by package managers to install into a temporary destination
+DESTDIR=
+
+#------
+# Definitions below can be overridden on the make command line, but
+# shouldn't have to be.
 
-LUAINC_win32="../../lua-5.1.3/src"
-LUALIB_win32="../../lua-5.1.3"
+print:
+        @echo PLAT=$(PLAT)
+        @echo LUAV=$(LUAV)
+        @echo DEBUG=$(DEBUG)
+        @echo prefix=$(prefix)
+        @echo LUAINC_$(PLAT)=$(LUAINC_$(PLAT))
+        @echo LUALIB_$(PLAT)=$(LUALIB_$(PLAT))
 
 #------
 # Install directories
@@ -44,7 +88,7 @@ PLATS= macosx linux win32
 SO_macosx=so
 O_macosx=o
 CC_macosx=gcc
-DEF_macosx= -DLUASOCKET_DEBUG -DUNIX_HAS_SUN_LEN -DLUA_COMPAT_MODULE \
+DEF_macosx= -DLUASOCKET_$(DEBUG) -DUNIX_HAS_SUN_LEN -DLUA_COMPAT_MODULE \
         -DLUASOCKET_API='__attribute__((visibility("default")))' \
         -DMIME_API='__attribute__((visibility("default")))'
 CFLAGS_macosx= -I$(LUAINC) $(DEF) -pedantic -Wall -O2 -fno-common \
@@ -59,7 +103,7 @@ SOCKET_macosx=usocket.o
 SO_linux=so
 O_linux=o
 CC_linux=gcc
-DEF_linux=-DLUASOCKET_DEBUG \
+DEF_linux=-DLUASOCKET_$(DEBUG) \
         -DLUASOCKET_API='__attribute__((visibility("default")))' \
         -DMIME_API='__attribute__((visibility("default")))'
 CFLAGS_linux= -I$(LUAINC) $(DEF) -pedantic -Wall -Wshadow -Wextra -Wimplicit -O2 -ggdb3 -fpic \
@@ -75,7 +119,7 @@ SO_win32=dll
 O_win32=obj
 CC_win32=cl
 DEF_win32= /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /D "_USRDLL" \
-     /D "LUASOCKET_API=__declspec(dllexport)" /D "LUASOCKET_DEBUG" \
+     /D "LUASOCKET_API=__declspec(dllexport)" /D "LUASOCKET_$(DEBUG)" \
      /D "_CRT_SECURE_NO_WARNINGS" /D "_WINDLL"
 CFLAGS_win32=/I$(LUAINC) $(DEF) /O2 /Ot /MD /W3 /nologo
 LDFLAGS_win32= /nologo /link /NOLOGO /DLL /INCREMENTAL:NO \