--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib/resolve.c	Thu May 28 01:17:36 2009 +0300
@@ -0,0 +1,109 @@
+#include "resolve.h"
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <string.h>
+#include <stdio.h>
+
+static const char* _gai_error_msg (const struct error_extra_type *type, const union error_extra *extra)
+{
+    (void) type;
+
+    return gai_strerror(extra->int_);
+}
+
+static const struct error_extra_type _gai_error_type = {
+    .name       = "gai",
+    .msg_func   = _gai_error_msg
+};
+
+
+
+const struct error_list resolve_errors = ERROR_LIST("resolve",
+    ERROR_TYPE_EXTRA(   ERR_RESOLVE_GETADDRINFO,        "getaddrinfo",              &_gai_error_type),
+    ERROR_TYPE_EXTRA(   ERR_RESOLVE_GETADDRINFO_EMPTY,  "getaddrinfo: no results",  &_gai_error_type)
+
+);
+
+err_t resolve_addr (struct resolve_result *res, const char *node, const char *service, int socktype, int ai_flags, error_t *err)
+{
+    struct addrinfo hints, *ai;
+    int ret;
+
+    // build hints
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_flags = ai_flags;
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = socktype;
+
+    // resolve (blocking)
+    if ((ret = getaddrinfo(node, service, &hints, &ai)))
+        return SET_ERROR_EXTRA(err, &resolve_errors, ERR_RESOLVE_GETADDRINFO, &_gai_error_type, ret);
+
+    // no results?
+    if (!ai)
+        return SET_ERROR(err, &resolve_errors, ERR_RESOLVE_GETADDRINFO_EMPTY);
+    
+    // store
+    res->list = res->item = ai;
+
+    // ok
+    return SUCCESS;
+}
+
+void resolve_result_init (struct resolve_result *res)
+{
+    res->list = res->item = NULL;
+}
+
+struct addrinfo* resolve_result_next (struct resolve_result *res)
+{
+    if (!res->item) {
+        // no items left
+        return NULL;
+
+    } else {
+        // ...remember the current item
+        struct addrinfo *ai = res->item;
+
+        if (res->item)
+            // advance item to the next one
+            res->item = res->item->ai_next;
+
+        // return the current one
+        return ai;
+    }
+}
+
+void resolve_result_deinit (struct resolve_result *res)
+{
+    if (res->list)
+        // free them all
+        freeaddrinfo(res->list);
+    
+    // invalidate
+    res->list = res->item = NULL;
+}
+
+const char * resolve_addr_text (const struct addrinfo *addr)
+{
+    static char text[1024];
+    char host[NI_MAXHOST], service[NI_MAXSERV];
+    int ret;
+
+    // lookup the reverse nameinfo
+    if ((ret = getnameinfo(
+                addr->ai_addr, addr->ai_addrlen, 
+                host, sizeof(host), service, sizeof(service), 
+                NI_NUMERICHOST | NI_NUMERICSERV
+    ))) {
+        strcpy(host, "???");
+        strcpy(service, "???");
+    }
+
+    // format message
+    snprintf(text, sizeof(text), "[%s]:%s", host, service);
+
+    // return static pointer
+    return text;
+}