From: Vsevolod Stakhov <vsevolod@rambler-co.ru>
Date: Mon, 31 Aug 2009 10:09:38 +0000 (+0400)
Subject: * Handle base10 encoded ip addresses correctly
X-Git-Tag: 0.2.7~32
X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=d77c3021ccbdf4994c8a5681ec99b99d978cb044;p=rspamd.git

* Handle base10 encoded ip addresses correctly
---

diff --git a/src/plugins/surbl.c b/src/plugins/surbl.c
index e7b9daec8..10d6e9fa9 100644
--- a/src/plugins/surbl.c
+++ b/src/plugins/surbl.c
@@ -45,209 +45,211 @@ static int  urls_command_handler (struct worker_task *task);
 
 #define SURBL_ERROR surbl_error_quark ()
 #define WHITELIST_ERROR 0
+#define CONVERSION_ERROR 1
 GQuark
 surbl_error_quark (void)
 {
-	return g_quark_from_static_string ("surbl-error-quark");
+    return g_quark_from_static_string ("surbl-error-quark");
 }
 
 int
 surbl_module_init (struct config_file *cfg, struct module_ctx **ctx)
 {
-	GError *err = NULL;
-
-	surbl_module_ctx = g_malloc (sizeof (struct surbl_ctx));
-
-	surbl_module_ctx->filter = surbl_filter;
-	surbl_module_ctx->use_redirector = 0;
-	surbl_module_ctx->suffixes = NULL;
-	surbl_module_ctx->bits = NULL;
-	surbl_module_ctx->surbl_pool = memory_pool_new (memory_pool_get_size ());
-	
-	surbl_module_ctx->tld2_file = NULL;
-	surbl_module_ctx->whitelist_file = NULL;
-
-	surbl_module_ctx->tld2 = g_hash_table_new (rspamd_strcase_hash, rspamd_strcase_equal);
-	surbl_module_ctx->redirector_hosts = g_hash_table_new (rspamd_strcase_hash, rspamd_strcase_equal);
-	surbl_module_ctx->whitelist = g_hash_table_new (rspamd_strcase_hash, rspamd_strcase_equal);
-	/* Register destructors */
-	memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_hash_table_destroy, surbl_module_ctx->tld2);
-	memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_hash_table_destroy, surbl_module_ctx->whitelist);
-	memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_hash_table_destroy, surbl_module_ctx->redirector_hosts);
-	
-	memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_list_free, surbl_module_ctx->suffixes);
-	memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_list_free, surbl_module_ctx->bits);
-		
-	/* Init matching regexps */
-	surbl_module_ctx->extract_hoster_regexp = g_regex_new ("([^.]+)\\.([^.]+)\\.([^.]+)$", G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, &err);
-	surbl_module_ctx->extract_normal_regexp = g_regex_new ("([^.]+)\\.([^.]+)$", G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, &err);
-	surbl_module_ctx->extract_numeric_regexp = g_regex_new ("(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$", G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, &err);
-
-	*ctx = (struct module_ctx *)surbl_module_ctx;
-
-	register_protocol_command ("urls", urls_command_handler);
-
-	return 0;
+    GError *err = NULL;
+
+    surbl_module_ctx = g_malloc (sizeof (struct surbl_ctx));
+
+    surbl_module_ctx->filter = surbl_filter;
+    surbl_module_ctx->use_redirector = 0;
+    surbl_module_ctx->suffixes = NULL;
+    surbl_module_ctx->bits = NULL;
+    surbl_module_ctx->surbl_pool = memory_pool_new (memory_pool_get_size ());
+    
+    surbl_module_ctx->tld2_file = NULL;
+    surbl_module_ctx->whitelist_file = NULL;
+
+    surbl_module_ctx->tld2 = g_hash_table_new (rspamd_strcase_hash, rspamd_strcase_equal);
+    surbl_module_ctx->redirector_hosts = g_hash_table_new (rspamd_strcase_hash, rspamd_strcase_equal);
+    surbl_module_ctx->whitelist = g_hash_table_new (rspamd_strcase_hash, rspamd_strcase_equal);
+    /* Register destructors */
+    memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_hash_table_destroy, surbl_module_ctx->tld2);
+    memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_hash_table_destroy, surbl_module_ctx->whitelist);
+    memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_hash_table_destroy, surbl_module_ctx->redirector_hosts);
+    
+    memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_list_free, surbl_module_ctx->suffixes);
+    memory_pool_add_destructor (surbl_module_ctx->surbl_pool, (pool_destruct_func)g_list_free, surbl_module_ctx->bits);
+        
+    /* Init matching regexps */
+    surbl_module_ctx->extract_hoster_regexp = g_regex_new ("([^.]+)\\.([^.]+)\\.([^.]+)$", G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, &err);
+    surbl_module_ctx->extract_normal_regexp = g_regex_new ("([^.]+)\\.([^.]+)$", G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, &err);
+    surbl_module_ctx->extract_ip_regexp = g_regex_new ("(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$", G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, &err);
+    surbl_module_ctx->extract_numeric_regexp = g_regex_new ("(\\d{5,20})$", G_REGEX_RAW | G_REGEX_OPTIMIZE, 0, &err);
+
+    *ctx = (struct module_ctx *)surbl_module_ctx;
+
+    register_protocol_command ("urls", urls_command_handler);
+
+    return 0;
 }
 
 int
 surbl_module_config (struct config_file *cfg)
 {
-	struct hostent *hent;
-	GList *cur_opt;
-	struct module_opt *cur;
-	struct suffix_item *new_suffix;
-	struct surbl_bit_item *new_bit;
-	struct metric *metric;
-	double *w;
-
-	char *value, *cur_tok, *str;
-	uint32_t bit;
-
-
-	if ((value = get_module_opt (cfg, "surbl", "redirector")) != NULL) {
-		str = memory_pool_strdup (surbl_module_ctx->surbl_pool, value);
-		cur_tok = strsep (&str, ":");
-		if (!inet_aton (cur_tok, &surbl_module_ctx->redirector_addr)) {
-			/* Try to call gethostbyname */
-			hent = gethostbyname (cur_tok);
-			if (hent != NULL) {
-				memcpy((char *)&surbl_module_ctx->redirector_addr, hent->h_addr, sizeof(struct in_addr));
-				if (str != NULL) {
-					surbl_module_ctx->redirector_port = (uint16_t)strtoul (str, NULL, 10);
-				}
-				else {
-					surbl_module_ctx->redirector_port = DEFAULT_REDIRECTOR_PORT;
-				}
-				surbl_module_ctx->use_redirector = 1;
-			}
-		}
-	}
-	if ((value = get_module_opt (cfg, "surbl", "weight")) != NULL) {
-		surbl_module_ctx->weight = atoi (value);
-	}
-	else {
-		surbl_module_ctx->weight = DEFAULT_SURBL_WEIGHT;
-	}
-	if ((value = get_module_opt (cfg, "surbl", "url_expire")) != NULL) {
-		surbl_module_ctx->url_expire = atoi (value);
-	}
-	else {
-		surbl_module_ctx->url_expire = DEFAULT_SURBL_URL_EXPIRE;
-	}
-	if ((value = get_module_opt (cfg, "surbl", "redirector_connect_timeout")) != NULL) {
-		surbl_module_ctx->connect_timeout = parse_seconds (value);
-	}
-	else {
-		surbl_module_ctx->connect_timeout = DEFAULT_REDIRECTOR_CONNECT_TIMEOUT;
-	}
-	if ((value = get_module_opt (cfg, "surbl", "redirector_read_timeout")) != NULL) {
-		surbl_module_ctx->read_timeout = parse_seconds (value);
-	}
-	else {
-		surbl_module_ctx->read_timeout = DEFAULT_REDIRECTOR_READ_TIMEOUT;
-	}
-	if ((value = get_module_opt (cfg, "surbl", "redirector_hosts_map")) != NULL) {
-		add_map (value, read_host_list, fin_host_list, (void **)&surbl_module_ctx->redirector_hosts);
-	}
-	else {
-		surbl_module_ctx->read_timeout = DEFAULT_REDIRECTOR_READ_TIMEOUT;
-	}
-	if ((value = get_module_opt (cfg, "surbl", "max_urls")) != NULL) {
-		surbl_module_ctx->max_urls = atoi (value);
-	}
-	else {
-		surbl_module_ctx->max_urls = DEFAULT_SURBL_MAX_URLS;
-	}
-	if ((value = get_module_opt (cfg, "surbl", "metric")) != NULL) {
-		surbl_module_ctx->metric = memory_pool_strdup (surbl_module_ctx->surbl_pool, value);
-	}
-	else {
-		surbl_module_ctx->metric = DEFAULT_METRIC;
-	}
-	if ((value = get_module_opt (cfg, "surbl", "2tld")) != NULL) {
-		if (add_map (value, read_host_list, fin_host_list, (void **)&surbl_module_ctx->tld2)) {
-			surbl_module_ctx->tld2_file = memory_pool_strdup (surbl_module_ctx->surbl_pool, value + sizeof ("file://") - 1);
-		}
-	}
-	if ((value = get_module_opt (cfg, "surbl", "whitelist")) != NULL) {
-		if (add_map (value, read_host_list, fin_host_list, (void **)&surbl_module_ctx->whitelist)) {
-			surbl_module_ctx->whitelist_file = memory_pool_strdup (surbl_module_ctx->surbl_pool, value + sizeof ("file://") - 1);
-		}
-	}
-	
-	metric = g_hash_table_lookup (cfg->metrics, surbl_module_ctx->metric);
-	if (metric == NULL) {
-		msg_err ("surbl_module_config: cannot find metric definition %s", surbl_module_ctx->metric);
-		return FALSE;
-	}
-
-
-	cur_opt = g_hash_table_lookup (cfg->modules_opts, "surbl");
-	while (cur_opt) {
-		cur = cur_opt->data;
-		if (!g_strncasecmp (cur->param, "suffix", sizeof ("suffix") - 1)) {
-			if ((str = strchr (cur->param, '_')) != NULL) {
-				new_suffix = memory_pool_alloc (surbl_module_ctx->surbl_pool, sizeof (struct suffix_item));
-				*str = '\0';
-				new_suffix->symbol = memory_pool_strdup (surbl_module_ctx->surbl_pool, str + 1);
-				new_suffix->suffix = memory_pool_strdup (surbl_module_ctx->surbl_pool, cur->value);
-				msg_debug ("surbl_module_config: add new surbl suffix: %s with symbol: %s", 
-							new_suffix->suffix, new_suffix->symbol);
-				*str = '_';
-				surbl_module_ctx->suffixes = g_list_prepend (surbl_module_ctx->suffixes, new_suffix);
-				/* Search in factors hash table */
-				w = g_hash_table_lookup (cfg->factors, new_suffix->symbol);
-				if (w == NULL) {
-					register_symbol (&metric->cache, new_suffix->symbol, 1, surbl_test_url, new_suffix);
-				}
-				else {
-					register_symbol (&metric->cache, new_suffix->symbol, *w, surbl_test_url, new_suffix);
-				}
-			}
-		}
-		if (!g_strncasecmp (cur->param, "bit", sizeof ("bit") - 1)) {
-			if ((str = strchr (cur->param, '_')) != NULL) {
-				bit = strtoul (str + 1, NULL, 10);
-				if (bit != 0) {
-					new_bit = memory_pool_alloc (surbl_module_ctx->surbl_pool, sizeof (struct surbl_bit_item));
-					new_bit->bit = bit;
-					new_bit->symbol = memory_pool_strdup (surbl_module_ctx->surbl_pool, cur->value);
-					msg_debug ("surbl_module_config: add new bit suffix: %d with symbol: %s", 
-								(int)new_bit->bit, new_bit->symbol);
-					surbl_module_ctx->bits = g_list_prepend (surbl_module_ctx->bits, new_bit);
-				}
-			}
-		}
-		cur_opt = g_list_next (cur_opt);
-	}
-	/* Add default suffix */
-	if (surbl_module_ctx->suffixes == NULL) {
-		new_suffix = memory_pool_alloc (surbl_module_ctx->surbl_pool, sizeof (struct suffix_item));
-		new_suffix->suffix = memory_pool_strdup (surbl_module_ctx->surbl_pool, DEFAULT_SURBL_SUFFIX);
-		new_suffix->symbol = memory_pool_strdup (surbl_module_ctx->surbl_pool, DEFAULT_SURBL_SYMBOL);
-		msg_debug ("surbl_module_config: add default surbl suffix: %s with symbol: %s", 
-								new_suffix->suffix, new_suffix->symbol);
-		surbl_module_ctx->suffixes = g_list_prepend (surbl_module_ctx->suffixes, new_suffix);
-		w = g_hash_table_lookup (cfg->factors, new_suffix->symbol);
-		if (w == NULL) {
-			register_symbol (&metric->cache, new_suffix->symbol, 1, surbl_test_url, new_suffix);
-		}
-		else {
-			register_symbol (&metric->cache, new_suffix->symbol, *w, surbl_test_url, new_suffix);
-		}
-	}
-
-	return TRUE;
+    struct hostent *hent;
+    GList *cur_opt;
+    struct module_opt *cur;
+    struct suffix_item *new_suffix;
+    struct surbl_bit_item *new_bit;
+    struct metric *metric;
+    double *w;
+
+    char *value, *cur_tok, *str;
+    uint32_t bit;
+
+
+    if ((value = get_module_opt (cfg, "surbl", "redirector")) != NULL) {
+        str = memory_pool_strdup (surbl_module_ctx->surbl_pool, value);
+        cur_tok = strsep (&str, ":");
+        if (!inet_aton (cur_tok, &surbl_module_ctx->redirector_addr)) {
+            /* Try to call gethostbyname */
+            hent = gethostbyname (cur_tok);
+            if (hent != NULL) {
+                memcpy((char *)&surbl_module_ctx->redirector_addr, hent->h_addr, sizeof(struct in_addr));
+                if (str != NULL) {
+                    surbl_module_ctx->redirector_port = (uint16_t)strtoul (str, NULL, 10);
+                }
+                else {
+                    surbl_module_ctx->redirector_port = DEFAULT_REDIRECTOR_PORT;
+                }
+                surbl_module_ctx->use_redirector = 1;
+            }
+        }
+    }
+    if ((value = get_module_opt (cfg, "surbl", "weight")) != NULL) {
+        surbl_module_ctx->weight = atoi (value);
+    }
+    else {
+        surbl_module_ctx->weight = DEFAULT_SURBL_WEIGHT;
+    }
+    if ((value = get_module_opt (cfg, "surbl", "url_expire")) != NULL) {
+        surbl_module_ctx->url_expire = atoi (value);
+    }
+    else {
+        surbl_module_ctx->url_expire = DEFAULT_SURBL_URL_EXPIRE;
+    }
+    if ((value = get_module_opt (cfg, "surbl", "redirector_connect_timeout")) != NULL) {
+        surbl_module_ctx->connect_timeout = parse_seconds (value);
+    }
+    else {
+        surbl_module_ctx->connect_timeout = DEFAULT_REDIRECTOR_CONNECT_TIMEOUT;
+    }
+    if ((value = get_module_opt (cfg, "surbl", "redirector_read_timeout")) != NULL) {
+        surbl_module_ctx->read_timeout = parse_seconds (value);
+    }
+    else {
+        surbl_module_ctx->read_timeout = DEFAULT_REDIRECTOR_READ_TIMEOUT;
+    }
+    if ((value = get_module_opt (cfg, "surbl", "redirector_hosts_map")) != NULL) {
+        add_map (value, read_host_list, fin_host_list, (void **)&surbl_module_ctx->redirector_hosts);
+    }
+    else {
+        surbl_module_ctx->read_timeout = DEFAULT_REDIRECTOR_READ_TIMEOUT;
+    }
+    if ((value = get_module_opt (cfg, "surbl", "max_urls")) != NULL) {
+        surbl_module_ctx->max_urls = atoi (value);
+    }
+    else {
+        surbl_module_ctx->max_urls = DEFAULT_SURBL_MAX_URLS;
+    }
+    if ((value = get_module_opt (cfg, "surbl", "metric")) != NULL) {
+        surbl_module_ctx->metric = memory_pool_strdup (surbl_module_ctx->surbl_pool, value);
+    }
+    else {
+        surbl_module_ctx->metric = DEFAULT_METRIC;
+    }
+    if ((value = get_module_opt (cfg, "surbl", "2tld")) != NULL) {
+        if (add_map (value, read_host_list, fin_host_list, (void **)&surbl_module_ctx->tld2)) {
+            surbl_module_ctx->tld2_file = memory_pool_strdup (surbl_module_ctx->surbl_pool, value + sizeof ("file://") - 1);
+        }
+    }
+    if ((value = get_module_opt (cfg, "surbl", "whitelist")) != NULL) {
+        if (add_map (value, read_host_list, fin_host_list, (void **)&surbl_module_ctx->whitelist)) {
+            surbl_module_ctx->whitelist_file = memory_pool_strdup (surbl_module_ctx->surbl_pool, value + sizeof ("file://") - 1);
+        }
+    }
+    
+    metric = g_hash_table_lookup (cfg->metrics, surbl_module_ctx->metric);
+    if (metric == NULL) {
+        msg_err ("surbl_module_config: cannot find metric definition %s", surbl_module_ctx->metric);
+        return FALSE;
+    }
+
+
+    cur_opt = g_hash_table_lookup (cfg->modules_opts, "surbl");
+    while (cur_opt) {
+        cur = cur_opt->data;
+        if (!g_strncasecmp (cur->param, "suffix", sizeof ("suffix") - 1)) {
+            if ((str = strchr (cur->param, '_')) != NULL) {
+                new_suffix = memory_pool_alloc (surbl_module_ctx->surbl_pool, sizeof (struct suffix_item));
+                *str = '\0';
+                new_suffix->symbol = memory_pool_strdup (surbl_module_ctx->surbl_pool, str + 1);
+                new_suffix->suffix = memory_pool_strdup (surbl_module_ctx->surbl_pool, cur->value);
+                msg_debug ("surbl_module_config: add new surbl suffix: %s with symbol: %s", 
+                            new_suffix->suffix, new_suffix->symbol);
+                *str = '_';
+                surbl_module_ctx->suffixes = g_list_prepend (surbl_module_ctx->suffixes, new_suffix);
+                /* Search in factors hash table */
+                w = g_hash_table_lookup (cfg->factors, new_suffix->symbol);
+                if (w == NULL) {
+                    register_symbol (&metric->cache, new_suffix->symbol, 1, surbl_test_url, new_suffix);
+                }
+                else {
+                    register_symbol (&metric->cache, new_suffix->symbol, *w, surbl_test_url, new_suffix);
+                }
+            }
+        }
+        if (!g_strncasecmp (cur->param, "bit", sizeof ("bit") - 1)) {
+            if ((str = strchr (cur->param, '_')) != NULL) {
+                bit = strtoul (str + 1, NULL, 10);
+                if (bit != 0) {
+                    new_bit = memory_pool_alloc (surbl_module_ctx->surbl_pool, sizeof (struct surbl_bit_item));
+                    new_bit->bit = bit;
+                    new_bit->symbol = memory_pool_strdup (surbl_module_ctx->surbl_pool, cur->value);
+                    msg_debug ("surbl_module_config: add new bit suffix: %d with symbol: %s", 
+                                (int)new_bit->bit, new_bit->symbol);
+                    surbl_module_ctx->bits = g_list_prepend (surbl_module_ctx->bits, new_bit);
+                }
+            }
+        }
+        cur_opt = g_list_next (cur_opt);
+    }
+    /* Add default suffix */
+    if (surbl_module_ctx->suffixes == NULL) {
+        new_suffix = memory_pool_alloc (surbl_module_ctx->surbl_pool, sizeof (struct suffix_item));
+        new_suffix->suffix = memory_pool_strdup (surbl_module_ctx->surbl_pool, DEFAULT_SURBL_SUFFIX);
+        new_suffix->symbol = memory_pool_strdup (surbl_module_ctx->surbl_pool, DEFAULT_SURBL_SYMBOL);
+        msg_debug ("surbl_module_config: add default surbl suffix: %s with symbol: %s", 
+                                new_suffix->suffix, new_suffix->symbol);
+        surbl_module_ctx->suffixes = g_list_prepend (surbl_module_ctx->suffixes, new_suffix);
+        w = g_hash_table_lookup (cfg->factors, new_suffix->symbol);
+        if (w == NULL) {
+            register_symbol (&metric->cache, new_suffix->symbol, 1, surbl_test_url, new_suffix);
+        }
+        else {
+            register_symbol (&metric->cache, new_suffix->symbol, *w, surbl_test_url, new_suffix);
+        }
+    }
+
+    return TRUE;
 }
 
 int
 surbl_module_reconfig (struct config_file *cfg)
 {
-	memory_pool_delete (surbl_module_ctx->surbl_pool);
-	surbl_module_ctx->surbl_pool = memory_pool_new (1024);
+    memory_pool_delete (surbl_module_ctx->surbl_pool);
+    surbl_module_ctx->surbl_pool = memory_pool_new (1024);
 
-	return surbl_module_config (cfg);
+    return surbl_module_config (cfg);
 }
 
 
@@ -255,620 +257,658 @@ surbl_module_reconfig (struct config_file *cfg)
 static char *
 format_surbl_request (memory_pool_t *pool, f_str_t *hostname, struct suffix_item *suffix, char **host_end, gboolean append_suffix, GError **err) 
 {
-	GMatchInfo *info;
-	char *result = NULL;
+    GMatchInfo *info;
+    char *result = NULL;
     int len, slen, r;
-	
-	if (suffix != NULL) {
-		slen = strlen (suffix->suffix);
-	}
-	else if (!append_suffix) {
-		slen = 0;
-	}
-	else {
-		g_assert_not_reached ();
-	}
+    
+    if (suffix != NULL) {
+        slen = strlen (suffix->suffix);
+    }
+    else if (!append_suffix) {
+        slen = 0;
+    }
+    else {
+        g_assert_not_reached ();
+    }
     len = hostname->len + slen + 2;
 
-	/* First try to match numeric expression */
-	if (g_regex_match_full (surbl_module_ctx->extract_numeric_regexp, hostname->begin, hostname->len, 0, 0, &info, NULL) == TRUE) {
-		gchar *octet1, *octet2, *octet3, *octet4;
-		octet1 = g_match_info_fetch (info, 1);
-		octet2 = g_match_info_fetch (info, 2);
-		octet3 = g_match_info_fetch (info, 3);
-		octet4 = g_match_info_fetch (info, 4);
-		result = memory_pool_alloc (pool, len);
-		msg_debug ("format_surbl_request: got numeric host for check: %s.%s.%s.%s", octet1, octet2, octet3, octet4);
-		r = snprintf (result, len, "%s.%s.%s.%s", octet4, octet3, octet2, octet1);
-		if (g_hash_table_lookup (surbl_module_ctx->whitelist, result) != NULL) {
-			g_free (octet1);
-			g_free (octet2);
-			g_free (octet3);
-			g_free (octet4);
-			g_match_info_free (info);
-			msg_debug ("format_surbl_request: url %s is whitelisted", result);
-			g_set_error (err,
-                   SURBL_ERROR,                 /* error domain */
-                   WHITELIST_ERROR,				/* error code */
-                   "URL is whitelisted: %s",	/* error message format string */
-                   result);
-
-			return NULL;
-		}
-		if (append_suffix) {
-			r += snprintf (result + r, len - r, ".%s", suffix->suffix);
-		}
-		*host_end = result + r - slen - 1;
-		g_free (octet1);
-		g_free (octet2);
-		g_free (octet3);
-		g_free (octet4);
-		g_match_info_free (info);
-		return result;
-	}
-	g_match_info_free (info);
-	/* Try to match normal domain */
-	if (g_regex_match_full (surbl_module_ctx->extract_normal_regexp, hostname->begin, hostname->len, 0, 0, &info, NULL) == TRUE) {
-		gchar *part1, *part2;
-		part1 = g_match_info_fetch (info, 1);
-		part2 = g_match_info_fetch (info, 2);
-		g_match_info_free (info);
-		result = memory_pool_alloc (pool, len); 
-		r = snprintf (result, len, "%s.%s", part1, part2);
-		if (g_hash_table_lookup (surbl_module_ctx->tld2, result) != NULL) {
-			/* Match additional part for hosters */
-			g_free (part1);
-			g_free (part2);
-			if (g_regex_match_full (surbl_module_ctx->extract_hoster_regexp, hostname->begin, hostname->len, 0, 0, &info, NULL) == TRUE) {
-				gchar *hpart1, *hpart2, *hpart3;
-				hpart1 = g_match_info_fetch (info, 1);
-				hpart2 = g_match_info_fetch (info, 2);
-				hpart3 = g_match_info_fetch (info, 3);
-				msg_debug ("format_surbl_request: got hoster 3-d level domain %s.%s.%s", hpart1, hpart2, hpart3);
-				r = snprintf (result, len, "%s.%s.%s", hpart1, hpart2, hpart3);
-				if (g_hash_table_lookup (surbl_module_ctx->whitelist, result) != NULL) {
-					g_free (hpart1);
-					g_free (hpart2);
-					g_free (hpart3);
-					g_match_info_free (info);
-					msg_debug ("format_surbl_request: url %s is whitelisted", result);
-					g_set_error (err,
-						   SURBL_ERROR,                 /* error domain */
-						   WHITELIST_ERROR,				/* error code */
-						   "URL is whitelisted: %s",	/* error message format string */
-						   result);
-					return NULL;
-				}
-				if (append_suffix) {
-					r += snprintf (result + r, len - r, ".%s", suffix->suffix);
-				}
-				*host_end = result + r - slen - 1;
-				g_free (hpart1);
-				g_free (hpart2);
-				g_free (hpart3);
-				g_match_info_free (info);
-				return result;
-			}
-			g_match_info_free (info);
-			*host_end = NULL;
-			return NULL;
-		}
-		else {
-			if (g_hash_table_lookup (surbl_module_ctx->whitelist, result) != NULL) {
-				g_free (part1);
-				g_free (part2);
-				msg_debug ("format_surbl_request: url %s is whitelisted", result);
-				g_set_error (err,
-					   SURBL_ERROR,                 /* error domain */
-					   WHITELIST_ERROR,				/* error code */
-					   "URL is whitelisted: %s",	/* error message format string */
-					   result);
-				return NULL;
-			}
-			if (append_suffix) {
-				r += snprintf (result + r, len - r, ".%s", suffix->suffix);
-			}
-			*host_end = result + r - slen - 1;
-			msg_debug ("format_surbl_request: got normal 2-d level domain %s.%s", part1, part2);
-		}
-		g_free (part1);
-		g_free (part2);
-		return result;
-	}
-
-	g_match_info_free (info);
-	*host_end = NULL;
-	return NULL;
+    /* First try to match numeric expression */
+    if (g_ascii_isdigit (*hostname->begin)) {
+        if (g_regex_match_full (surbl_module_ctx->extract_ip_regexp, hostname->begin, hostname->len, 0, 0, &info, NULL) == TRUE) {
+            gchar *octet1, *octet2, *octet3, *octet4;
+            octet1 = g_match_info_fetch (info, 1);
+            octet2 = g_match_info_fetch (info, 2);
+            octet3 = g_match_info_fetch (info, 3);
+            octet4 = g_match_info_fetch (info, 4);
+            result = memory_pool_alloc (pool, len);
+            msg_debug ("format_surbl_request: got numeric host for check: %s.%s.%s.%s", octet1, octet2, octet3, octet4);
+            r = snprintf (result, len, "%s.%s.%s.%s", octet4, octet3, octet2, octet1);
+            if (g_hash_table_lookup (surbl_module_ctx->whitelist, result) != NULL) {
+                g_free (octet1);
+                g_free (octet2);
+                g_free (octet3);
+                g_free (octet4);
+                g_match_info_free (info);
+                msg_debug ("format_surbl_request: url %s is whitelisted", result);
+                g_set_error (err,
+                    SURBL_ERROR,                 /* error domain */
+                    WHITELIST_ERROR,                /* error code */
+                    "URL is whitelisted: %s",   /* error message format string */
+                    result);
+
+                return NULL;
+            }
+            if (append_suffix) {
+                r += snprintf (result + r, len - r, ".%s", suffix->suffix);
+            }
+            *host_end = result + r - slen - 1;
+            g_free (octet1);
+            g_free (octet2);
+            g_free (octet3);
+            g_free (octet4);
+            g_match_info_free (info);
+            return result;
+        }
+        g_match_info_free (info);
+        if (g_regex_match_full (surbl_module_ctx->extract_numeric_regexp, hostname->begin, hostname->len, 0, 0, &info, NULL) == TRUE) {
+            gchar *ip = g_match_info_fetch (info, 1);
+            uint64_t ip_num;
+            
+            errno = 0;
+            ip_num = strtoull (ip, NULL, 10);
+            if (errno != 0) {
+                g_match_info_free (info);
+                msg_info ("format_surbl_request: cannot convert ip to number '%s': %s", ip, strerror (errno));
+                g_set_error (err,
+                    SURBL_ERROR,                 /* error domain */
+                    CONVERSION_ERROR,                /* error code */
+                    "URL cannot be decoded");
+                g_free (ip);
+
+                return NULL;
+            }
+
+            len = sizeof ("255.255.255.255") + slen;
+            result = memory_pool_alloc (pool, len);
+            /* Hack for bugged windows resolver */
+            ip_num &= 0xFFFFFFFF;
+            /* Get octets */
+            r = snprintf (result, len, "%u.%u.%u.%u",
+                    (uint32_t)ip_num & 0x000000FF,
+                    (uint32_t)(ip_num & 0x0000FF00) >> 8,
+                    (uint32_t)(ip_num & 0x00FF0000) >> 16,
+                    (uint32_t)(ip_num & 0xFF000000) >> 24);
+            if (append_suffix) {
+                r += snprintf (result + r, len - r, ".%s", suffix->suffix);
+            }
+            *host_end = result + r - slen - 1;
+            g_free (ip);
+            g_match_info_free (info);
+            return result;
+        }
+    }
+    /* Try to match normal domain */
+    if (g_regex_match_full (surbl_module_ctx->extract_normal_regexp, hostname->begin, hostname->len, 0, 0, &info, NULL) == TRUE) {
+        gchar *part1, *part2;
+        part1 = g_match_info_fetch (info, 1);
+        part2 = g_match_info_fetch (info, 2);
+        g_match_info_free (info);
+        result = memory_pool_alloc (pool, len); 
+        r = snprintf (result, len, "%s.%s", part1, part2);
+        if (g_hash_table_lookup (surbl_module_ctx->tld2, result) != NULL) {
+            /* Match additional part for hosters */
+            g_free (part1);
+            g_free (part2);
+            if (g_regex_match_full (surbl_module_ctx->extract_hoster_regexp, hostname->begin, hostname->len, 0, 0, &info, NULL) == TRUE) {
+                gchar *hpart1, *hpart2, *hpart3;
+                hpart1 = g_match_info_fetch (info, 1);
+                hpart2 = g_match_info_fetch (info, 2);
+                hpart3 = g_match_info_fetch (info, 3);
+                msg_debug ("format_surbl_request: got hoster 3-d level domain %s.%s.%s", hpart1, hpart2, hpart3);
+                r = snprintf (result, len, "%s.%s.%s", hpart1, hpart2, hpart3);
+                if (g_hash_table_lookup (surbl_module_ctx->whitelist, result) != NULL) {
+                    g_free (hpart1);
+                    g_free (hpart2);
+                    g_free (hpart3);
+                    g_match_info_free (info);
+                    msg_debug ("format_surbl_request: url %s is whitelisted", result);
+                    g_set_error (err,
+                           SURBL_ERROR,                 /* error domain */
+                           WHITELIST_ERROR,             /* error code */
+                           "URL is whitelisted: %s",    /* error message format string */
+                           result);
+                    return NULL;
+                }
+                if (append_suffix) {
+                    r += snprintf (result + r, len - r, ".%s", suffix->suffix);
+                }
+                *host_end = result + r - slen - 1;
+                g_free (hpart1);
+                g_free (hpart2);
+                g_free (hpart3);
+                g_match_info_free (info);
+                return result;
+            }
+            g_match_info_free (info);
+            *host_end = NULL;
+            return NULL;
+        }
+        else {
+            if (g_hash_table_lookup (surbl_module_ctx->whitelist, result) != NULL) {
+                g_free (part1);
+                g_free (part2);
+                msg_debug ("format_surbl_request: url %s is whitelisted", result);
+                g_set_error (err,
+                       SURBL_ERROR,                 /* error domain */
+                       WHITELIST_ERROR,             /* error code */
+                       "URL is whitelisted: %s",    /* error message format string */
+                       result);
+                return NULL;
+            }
+            if (append_suffix) {
+                r += snprintf (result + r, len - r, ".%s", suffix->suffix);
+            }
+            *host_end = result + r - slen - 1;
+            msg_debug ("format_surbl_request: got normal 2-d level domain %s.%s", part1, part2);
+        }
+        g_free (part1);
+        g_free (part2);
+        return result;
+    }
+
+    g_match_info_free (info);
+    *host_end = NULL;
+    return NULL;
 }
 
 static void 
 make_surbl_requests (struct uri* url, struct worker_task *task, GTree *tree, struct suffix_item *suffix)
-{	
-	char *surbl_req;
-	f_str_t f;
-	GError *err = NULL;
-	struct dns_param *param;
-	char *host_end;
-
-	f.begin = url->host;
-	f.len = url->hostlen;
-
-	if (check_view (task->cfg->views, suffix->symbol, task)) {
-		if ((surbl_req = format_surbl_request (task->task_pool, &f, suffix, &host_end, TRUE, &err)) != NULL) {
-			if (g_tree_lookup (tree, surbl_req) == NULL) {
-				g_tree_insert (tree, surbl_req, surbl_req);
-				param = memory_pool_alloc (task->task_pool, sizeof (struct dns_param));
-				param->url = url;
-				param->task = task;
-				param->suffix = suffix;
-				*host_end = '\0';
-				param->host_resolve = memory_pool_strdup (task->task_pool, surbl_req);
-				*host_end = '.';
-				msg_debug ("surbl_test_url: send surbl dns request %s", surbl_req);
-				if (evdns_resolve_ipv4 (surbl_req, DNS_QUERY_NO_SEARCH, dns_callback, (void *)param) == 0) {
-					param->task->save.saved ++;
-				}
-			}
-			else {
-				msg_debug ("make_surbl_requests: request %s is already sent", surbl_req);
-			}
-		}
-		else if (err != NULL && err->code != WHITELIST_ERROR) {
-			msg_info ("surbl_test_url: cannot format url string for surbl %s, %s", struri (url), err->message);
-			g_error_free (err);
-			return;
-		}
-		else if (err != NULL) {
-			g_error_free (err);
-		}
-	}
-	else {
-		msg_debug ("make_surbl_requests: skipping symbol that is not in view: %s", suffix->symbol);
-	}
+{   
+    char *surbl_req;
+    f_str_t f;
+    GError *err = NULL;
+    struct dns_param *param;
+    char *host_end;
+
+    f.begin = url->host;
+    f.len = url->hostlen;
+
+    if (check_view (task->cfg->views, suffix->symbol, task)) {
+        if ((surbl_req = format_surbl_request (task->task_pool, &f, suffix, &host_end, TRUE, &err)) != NULL) {
+            if (g_tree_lookup (tree, surbl_req) == NULL) {
+                g_tree_insert (tree, surbl_req, surbl_req);
+                param = memory_pool_alloc (task->task_pool, sizeof (struct dns_param));
+                param->url = url;
+                param->task = task;
+                param->suffix = suffix;
+                *host_end = '\0';
+                param->host_resolve = memory_pool_strdup (task->task_pool, surbl_req);
+                *host_end = '.';
+                msg_debug ("surbl_test_url: send surbl dns request %s", surbl_req);
+                if (evdns_resolve_ipv4 (surbl_req, DNS_QUERY_NO_SEARCH, dns_callback, (void *)param) == 0) {
+                    param->task->save.saved ++;
+                }
+            }
+            else {
+                msg_debug ("make_surbl_requests: request %s is already sent", surbl_req);
+            }
+        }
+        else if (err != NULL && err->code != WHITELIST_ERROR) {
+            msg_info ("surbl_test_url: cannot format url string for surbl %s, %s", struri (url), err->message);
+            g_error_free (err);
+            return;
+        }
+        else if (err != NULL) {
+            g_error_free (err);
+        }
+    }
+    else {
+        msg_debug ("make_surbl_requests: skipping symbol that is not in view: %s", suffix->symbol);
+    }
 }
 
 static void
 process_dns_results (struct worker_task *task, struct suffix_item *suffix, char *url, uint32_t addr)
 {
-	char *c, *symbol;
-	GList *cur;
-	struct surbl_bit_item *bit;
-	int len, found = 0;
-	
-	if ((c = strchr (suffix->symbol, '%')) != NULL && *(c + 1) == 'b') {
-		cur = g_list_first (surbl_module_ctx->bits);
-
-		while (cur) {
-			bit = (struct surbl_bit_item *)cur->data;
-			msg_debug ("process_dns_results: got result(%d) AND bit(%d): %d", (int)addr, (int)ntohl(bit->bit), 
-							(int)bit->bit & (int)ntohl (addr));
-			if (((int)bit->bit & (int)ntohl (addr)) != 0) {
-				len = strlen (suffix->symbol) - 2 + strlen (bit->symbol) + 1;
-				*c = '\0';
-				symbol = memory_pool_alloc (task->task_pool, len);
-				snprintf (symbol, len, "%s%s%s", suffix->symbol, bit->symbol, c + 2);
-				*c = '%';
-				insert_result (task, surbl_module_ctx->metric, symbol, 1, 
-							g_list_prepend (NULL, memory_pool_strdup (task->task_pool, url)));
-				found = 1;
-			}
-			cur = g_list_next (cur);
-		}
-
-		if (!found) {
-			insert_result (task, surbl_module_ctx->metric, suffix->symbol, 1, 
-							g_list_prepend (NULL, memory_pool_strdup (task->task_pool, url)));
-		}
-	}
-	else {
-		insert_result (task, surbl_module_ctx->metric, suffix->symbol, 1, 
-							g_list_prepend (NULL, memory_pool_strdup (task->task_pool, url)));
-	}
+    char *c, *symbol;
+    GList *cur;
+    struct surbl_bit_item *bit;
+    int len, found = 0;
+    
+    if ((c = strchr (suffix->symbol, '%')) != NULL && *(c + 1) == 'b') {
+        cur = g_list_first (surbl_module_ctx->bits);
+
+        while (cur) {
+            bit = (struct surbl_bit_item *)cur->data;
+            msg_debug ("process_dns_results: got result(%d) AND bit(%d): %d", (int)addr, (int)ntohl(bit->bit), 
+                            (int)bit->bit & (int)ntohl (addr));
+            if (((int)bit->bit & (int)ntohl (addr)) != 0) {
+                len = strlen (suffix->symbol) - 2 + strlen (bit->symbol) + 1;
+                *c = '\0';
+                symbol = memory_pool_alloc (task->task_pool, len);
+                snprintf (symbol, len, "%s%s%s", suffix->symbol, bit->symbol, c + 2);
+                *c = '%';
+                insert_result (task, surbl_module_ctx->metric, symbol, 1, 
+                            g_list_prepend (NULL, memory_pool_strdup (task->task_pool, url)));
+                found = 1;
+            }
+            cur = g_list_next (cur);
+        }
+
+        if (!found) {
+            insert_result (task, surbl_module_ctx->metric, suffix->symbol, 1, 
+                            g_list_prepend (NULL, memory_pool_strdup (task->task_pool, url)));
+        }
+    }
+    else {
+        insert_result (task, surbl_module_ctx->metric, suffix->symbol, 1, 
+                            g_list_prepend (NULL, memory_pool_strdup (task->task_pool, url)));
+    }
 }
 
 static void 
 dns_callback (int result, char type, int count, int ttl, void *addresses, void *data)
 {
-	struct dns_param *param = (struct dns_param *)data;
-	
-	msg_debug ("dns_callback: in surbl request callback");
-	/* If we have result from DNS server, this url exists in SURBL, so increase score */
-	if (result == DNS_ERR_NONE && type == DNS_IPv4_A) {
-		msg_info ("surbl_check: <%s> domain [%s] is in surbl %s", 
-					param->task->message_id, param->host_resolve, param->suffix->suffix);
-		process_dns_results (param->task, param->suffix, param->host_resolve, (uint32_t)(((in_addr_t *)addresses)[0]));
-	}
-	else {
-		msg_debug ("surbl_check: <%s> domain [%s] is not in surbl %s", 
-					param->task->message_id, param->host_resolve, param->suffix->suffix);
-	}
-	
-	param->task->save.saved --;
-	if (param->task->save.saved == 0) {
-		/* Call other filters */
-		param->task->save.saved = 1;
-		process_filters (param->task);
-	}
+    struct dns_param *param = (struct dns_param *)data;
+    
+    msg_debug ("dns_callback: in surbl request callback");
+    /* If we have result from DNS server, this url exists in SURBL, so increase score */
+    if (result == DNS_ERR_NONE && type == DNS_IPv4_A) {
+        msg_info ("surbl_check: <%s> domain [%s] is in surbl %s", 
+                    param->task->message_id, param->host_resolve, param->suffix->suffix);
+        process_dns_results (param->task, param->suffix, param->host_resolve, (uint32_t)(((in_addr_t *)addresses)[0]));
+    }
+    else {
+        msg_debug ("surbl_check: <%s> domain [%s] is not in surbl %s", 
+                    param->task->message_id, param->host_resolve, param->suffix->suffix);
+    }
+    
+    param->task->save.saved --;
+    if (param->task->save.saved == 0) {
+        /* Call other filters */
+        param->task->save.saved = 1;
+        process_filters (param->task);
+    }
 
 }
 
 static void 
 memcached_callback (memcached_ctx_t *ctx, memc_error_t error, void *data)
 {
-	struct memcached_param *param = (struct memcached_param *)data;
-	int *url_count;
-
-	switch (ctx->op) {
-		case CMD_CONNECT:
-			if (error != OK) {
-				msg_info ("memcached_callback: memcached returned error %s on CONNECT stage", memc_strerror (error));
-				memc_close_ctx (param->ctx);
-				param->task->save.saved --;
-				if (param->task->save.saved == 0) {
-					/* Call other filters */
-					param->task->save.saved = 1;
-					process_filters (param->task);
-				}
-			}
-			else {
-				memc_get (param->ctx, param->ctx->param);
-			}
-			break;
-		case CMD_READ:
-			if (error != OK) {
-				msg_info ("memcached_callback: memcached returned error %s on READ stage", memc_strerror (error));
-				memc_close_ctx (param->ctx);
-				param->task->save.saved --;
-				if (param->task->save.saved == 0) {
-					/* Call other filters */
-					param->task->save.saved = 1;
-					process_filters (param->task);
-				}
-			}
-			else {
-				url_count = (int *)param->ctx->param->buf;
-				/* Do not check DNS for urls that have count more than max_urls */
-				if (*url_count > surbl_module_ctx->max_urls) {
-					msg_info ("memcached_callback: url '%s' has count %d, max: %d", struri (param->url), *url_count, surbl_module_ctx->max_urls);
-					/* 
-					 * XXX: try to understand why we should use memcached here
-					 * insert_result (param->task, surbl_module_ctx->metric, surbl_module_ctx->symbol, 1);
-					 */
-				}
-				(*url_count) ++;
-				memc_set (param->ctx, param->ctx->param, surbl_module_ctx->url_expire);
-			}
-			break;
-		case CMD_WRITE:
-			if (error != OK) {
-				msg_info ("memcached_callback: memcached returned error %s on WRITE stage", memc_strerror (error));
-			}
-			memc_close_ctx (param->ctx);
-			param->task->save.saved --;
-			if (param->task->save.saved == 0) {
-				/* Call other filters */
-				param->task->save.saved = 1;
-				process_filters (param->task);
-			}
-			make_surbl_requests (param->url, param->task, param->tree, param->suffix);
-			break;
-		default:
-			return;
-	}
+    struct memcached_param *param = (struct memcached_param *)data;
+    int *url_count;
+
+    switch (ctx->op) {
+        case CMD_CONNECT:
+            if (error != OK) {
+                msg_info ("memcached_callback: memcached returned error %s on CONNECT stage", memc_strerror (error));
+                memc_close_ctx (param->ctx);
+                param->task->save.saved --;
+                if (param->task->save.saved == 0) {
+                    /* Call other filters */
+                    param->task->save.saved = 1;
+                    process_filters (param->task);
+                }
+            }
+            else {
+                memc_get (param->ctx, param->ctx->param);
+            }
+            break;
+        case CMD_READ:
+            if (error != OK) {
+                msg_info ("memcached_callback: memcached returned error %s on READ stage", memc_strerror (error));
+                memc_close_ctx (param->ctx);
+                param->task->save.saved --;
+                if (param->task->save.saved == 0) {
+                    /* Call other filters */
+                    param->task->save.saved = 1;
+                    process_filters (param->task);
+                }
+            }
+            else {
+                url_count = (int *)param->ctx->param->buf;
+                /* Do not check DNS for urls that have count more than max_urls */
+                if (*url_count > surbl_module_ctx->max_urls) {
+                    msg_info ("memcached_callback: url '%s' has count %d, max: %d", struri (param->url), *url_count, surbl_module_ctx->max_urls);
+                    /* 
+                     * XXX: try to understand why we should use memcached here
+                     * insert_result (param->task, surbl_module_ctx->metric, surbl_module_ctx->symbol, 1);
+                     */
+                }
+                (*url_count) ++;
+                memc_set (param->ctx, param->ctx->param, surbl_module_ctx->url_expire);
+            }
+            break;
+        case CMD_WRITE:
+            if (error != OK) {
+                msg_info ("memcached_callback: memcached returned error %s on WRITE stage", memc_strerror (error));
+            }
+            memc_close_ctx (param->ctx);
+            param->task->save.saved --;
+            if (param->task->save.saved == 0) {
+                /* Call other filters */
+                param->task->save.saved = 1;
+                process_filters (param->task);
+            }
+            make_surbl_requests (param->url, param->task, param->tree, param->suffix);
+            break;
+        default:
+            return;
+    }
 }
 
 static void
 register_memcached_call (struct uri *url, struct worker_task *task, GTree *url_tree, struct suffix_item *suffix) 
 {
-	struct memcached_param *param;
-	struct memcached_server *selected;
-	memcached_param_t *cur_param;
-	gchar *sum_str;
-	int *url_count;
-
-	param = memory_pool_alloc (task->task_pool, sizeof (struct memcached_param));
-	cur_param = memory_pool_alloc0 (task->task_pool, sizeof (memcached_param_t));
-	url_count = memory_pool_alloc (task->task_pool, sizeof (int));
-
-	param->url = url;
-	param->task = task;
-	param->tree = url_tree;
-	param->suffix = suffix;
-
-	param->ctx = memory_pool_alloc0 (task->task_pool, sizeof (memcached_ctx_t));
-
-	cur_param->buf = (u_char *)url_count;
-	cur_param->bufsize = sizeof (int);
-
-	sum_str = g_compute_checksum_for_string (G_CHECKSUM_MD5, struri (url), -1);
-	g_strlcpy (cur_param->key, sum_str, sizeof (cur_param->key));
-	g_free (sum_str);
-
-	selected = (struct memcached_server *) get_upstream_by_hash ((void *)task->cfg->memcached_servers,
-											task->cfg->memcached_servers_num, sizeof (struct memcached_server),
-											time (NULL), task->cfg->memcached_error_time, task->cfg->memcached_dead_time, task->cfg->memcached_maxerrors,
-											cur_param->key, strlen(cur_param->key));
-	if (selected == NULL) {
-		msg_err ("surbl_register_memcached_call: no memcached servers can be selected");
-		return;
-	}
-	param->ctx->callback = memcached_callback;
-	param->ctx->callback_data = (void *)param;
-	param->ctx->protocol = task->cfg->memcached_protocol;
-	memcpy(&param->ctx->addr, &selected->addr, sizeof (struct in_addr));
-	param->ctx->port = selected->port;
-	param->ctx->timeout.tv_sec = task->cfg->memcached_connect_timeout / 1000;
-	param->ctx->timeout.tv_sec = task->cfg->memcached_connect_timeout - param->ctx->timeout.tv_sec * 1000;
-	param->ctx->sock = -1;
+    struct memcached_param *param;
+    struct memcached_server *selected;
+    memcached_param_t *cur_param;
+    gchar *sum_str;
+    int *url_count;
+
+    param = memory_pool_alloc (task->task_pool, sizeof (struct memcached_param));
+    cur_param = memory_pool_alloc0 (task->task_pool, sizeof (memcached_param_t));
+    url_count = memory_pool_alloc (task->task_pool, sizeof (int));
+
+    param->url = url;
+    param->task = task;
+    param->tree = url_tree;
+    param->suffix = suffix;
+
+    param->ctx = memory_pool_alloc0 (task->task_pool, sizeof (memcached_ctx_t));
+
+    cur_param->buf = (u_char *)url_count;
+    cur_param->bufsize = sizeof (int);
+
+    sum_str = g_compute_checksum_for_string (G_CHECKSUM_MD5, struri (url), -1);
+    g_strlcpy (cur_param->key, sum_str, sizeof (cur_param->key));
+    g_free (sum_str);
+
+    selected = (struct memcached_server *) get_upstream_by_hash ((void *)task->cfg->memcached_servers,
+                                            task->cfg->memcached_servers_num, sizeof (struct memcached_server),
+                                            time (NULL), task->cfg->memcached_error_time, task->cfg->memcached_dead_time, task->cfg->memcached_maxerrors,
+                                            cur_param->key, strlen(cur_param->key));
+    if (selected == NULL) {
+        msg_err ("surbl_register_memcached_call: no memcached servers can be selected");
+        return;
+    }
+    param->ctx->callback = memcached_callback;
+    param->ctx->callback_data = (void *)param;
+    param->ctx->protocol = task->cfg->memcached_protocol;
+    memcpy(&param->ctx->addr, &selected->addr, sizeof (struct in_addr));
+    param->ctx->port = selected->port;
+    param->ctx->timeout.tv_sec = task->cfg->memcached_connect_timeout / 1000;
+    param->ctx->timeout.tv_sec = task->cfg->memcached_connect_timeout - param->ctx->timeout.tv_sec * 1000;
+    param->ctx->sock = -1;
 #ifdef WITH_DEBUG
-	param->ctx->options = MEMC_OPT_DEBUG;
+    param->ctx->options = MEMC_OPT_DEBUG;
 #else
-	param->ctx->options = 0;
+    param->ctx->options = 0;
 #endif
-	param->ctx->param = cur_param;
-	memc_init_ctx (param->ctx);
+    param->ctx->param = cur_param;
+    memc_init_ctx (param->ctx);
 }
 
 static void
 redirector_callback (int fd, short what, void *arg)
 {
-	struct redirector_param *param = (struct redirector_param *)arg;
-	char url_buf[1024];
-	int r;
-	struct timeval *timeout;
-	char *p, *c;
-
-	switch (param->state) {
-		case STATE_CONNECT:
-			/* We have write readiness after connect call, so reinit event */
-			if (what == EV_WRITE) {
-				timeout = memory_pool_alloc (param->task->task_pool, sizeof (struct timeval));
-				timeout->tv_sec = surbl_module_ctx->read_timeout / 1000;
-				timeout->tv_usec = surbl_module_ctx->read_timeout - timeout->tv_sec * 1000;
-				event_del (&param->ev);
-				event_set (&param->ev, param->sock, EV_READ | EV_PERSIST, redirector_callback, (void *)param);
-				event_add (&param->ev, timeout);
-				r = snprintf (url_buf, sizeof (url_buf), "GET %s HTTP/1.0\r\n\r\n", struri (param->url));
-				if (write (param->sock, url_buf, r) == -1) {
-					msg_err ("redirector_callback: write failed %s", strerror (errno));
-					event_del (&param->ev);
-					close (fd);
-					param->task->save.saved --;
-					make_surbl_requests (param->url, param->task, param->tree, param->suffix);
-					if (param->task->save.saved == 0) {
-						/* Call other filters */
-						param->task->save.saved = 1;
-						process_filters (param->task);
-					}
-					return;
-				}
-				param->state = STATE_READ;
-			}
-			else {
-				event_del (&param->ev);
-				close (fd);
-				msg_info ("redirector_callback: <%s> connection to redirector timed out while waiting for write",
-							param->task->message_id);
-				param->task->save.saved --;
-				make_surbl_requests (param->url, param->task, param->tree, param->suffix);
-
-				if (param->task->save.saved == 0) {
-					/* Call other filters */
-					param->task->save.saved = 1;
-					process_filters (param->task);
-				}
-			}
-			break;
-		case STATE_READ:
-			if (what == EV_READ) {
-				r = read (param->sock, url_buf, sizeof (url_buf));
-				if ((p = strstr (url_buf, "Uri: ")) != NULL) {
-					p += sizeof ("Uri: ") - 1;
-					c = p;
-					while (p++ < url_buf + sizeof (url_buf) - 1) {
-						if (*p == '\r' || *p == '\n') {
-							*p = '\0';
-							break;
-						}
-					}
-					if (*p == '\0') {
-						msg_debug ("redirector_callback: <%s> got reply from redirector: '%s' -> '%s'", 
-									param->task->message_id, struri (param->url), c);
-						parse_uri (param->url, memory_pool_strdup (param->task->task_pool, c), param->task->task_pool);
-					}
-				}
-				event_del (&param->ev);
-				close (fd);
-				param->task->save.saved --;
-				make_surbl_requests (param->url, param->task, param->tree, param->suffix);
-				if (param->task->save.saved == 0) {
-					/* Call other filters */
-					param->task->save.saved = 1;
-					process_filters (param->task);
-				}
-			}
-			else {
-				event_del (&param->ev);
-				close (fd);
-				msg_info ("redirector_callback: <%s> reading redirector timed out, while waiting for read",
-							param->task->message_id);
-				param->task->save.saved --;
-				make_surbl_requests (param->url, param->task, param->tree, param->suffix);
-				if (param->task->save.saved == 0) {
-					/* Call other filters */
-					param->task->save.saved = 1;
-					process_filters (param->task);
-				}
-			}
-			break;
-	}
+    struct redirector_param *param = (struct redirector_param *)arg;
+    char url_buf[1024];
+    int r;
+    struct timeval *timeout;
+    char *p, *c;
+
+    switch (param->state) {
+        case STATE_CONNECT:
+            /* We have write readiness after connect call, so reinit event */
+            if (what == EV_WRITE) {
+                timeout = memory_pool_alloc (param->task->task_pool, sizeof (struct timeval));
+                timeout->tv_sec = surbl_module_ctx->read_timeout / 1000;
+                timeout->tv_usec = surbl_module_ctx->read_timeout - timeout->tv_sec * 1000;
+                event_del (&param->ev);
+                event_set (&param->ev, param->sock, EV_READ | EV_PERSIST, redirector_callback, (void *)param);
+                event_add (&param->ev, timeout);
+                r = snprintf (url_buf, sizeof (url_buf), "GET %s HTTP/1.0\r\n\r\n", struri (param->url));
+                if (write (param->sock, url_buf, r) == -1) {
+                    msg_err ("redirector_callback: write failed %s", strerror (errno));
+                    event_del (&param->ev);
+                    close (fd);
+                    param->task->save.saved --;
+                    make_surbl_requests (param->url, param->task, param->tree, param->suffix);
+                    if (param->task->save.saved == 0) {
+                        /* Call other filters */
+                        param->task->save.saved = 1;
+                        process_filters (param->task);
+                    }
+                    return;
+                }
+                param->state = STATE_READ;
+            }
+            else {
+                event_del (&param->ev);
+                close (fd);
+                msg_info ("redirector_callback: <%s> connection to redirector timed out while waiting for write",
+                            param->task->message_id);
+                param->task->save.saved --;
+                make_surbl_requests (param->url, param->task, param->tree, param->suffix);
+
+                if (param->task->save.saved == 0) {
+                    /* Call other filters */
+                    param->task->save.saved = 1;
+                    process_filters (param->task);
+                }
+            }
+            break;
+        case STATE_READ:
+            if (what == EV_READ) {
+                r = read (param->sock, url_buf, sizeof (url_buf));
+                if ((p = strstr (url_buf, "Uri: ")) != NULL) {
+                    p += sizeof ("Uri: ") - 1;
+                    c = p;
+                    while (p++ < url_buf + sizeof (url_buf) - 1) {
+                        if (*p == '\r' || *p == '\n') {
+                            *p = '\0';
+                            break;
+                        }
+                    }
+                    if (*p == '\0') {
+                        msg_debug ("redirector_callback: <%s> got reply from redirector: '%s' -> '%s'", 
+                                    param->task->message_id, struri (param->url), c);
+                        parse_uri (param->url, memory_pool_strdup (param->task->task_pool, c), param->task->task_pool);
+                    }
+                }
+                event_del (&param->ev);
+                close (fd);
+                param->task->save.saved --;
+                make_surbl_requests (param->url, param->task, param->tree, param->suffix);
+                if (param->task->save.saved == 0) {
+                    /* Call other filters */
+                    param->task->save.saved = 1;
+                    process_filters (param->task);
+                }
+            }
+            else {
+                event_del (&param->ev);
+                close (fd);
+                msg_info ("redirector_callback: <%s> reading redirector timed out, while waiting for read",
+                            param->task->message_id);
+                param->task->save.saved --;
+                make_surbl_requests (param->url, param->task, param->tree, param->suffix);
+                if (param->task->save.saved == 0) {
+                    /* Call other filters */
+                    param->task->save.saved = 1;
+                    process_filters (param->task);
+                }
+            }
+            break;
+    }
 }
 
 
 static void
 register_redirector_call (struct uri *url, struct worker_task *task, GTree *url_tree, struct suffix_item *suffix) 
 {
-	int s;
-	struct redirector_param *param;
-	struct timeval *timeout;
-
-	s = make_tcp_socket (&surbl_module_ctx->redirector_addr, surbl_module_ctx->redirector_port, FALSE, TRUE);
-
-	if (s == -1) {
-		msg_info ("register_redirector_call: <%s> cannot create tcp socket failed: %s", 
-					task->message_id, strerror (errno));
-		task->save.saved --;
-		make_surbl_requests (url, task, url_tree, suffix);
-		return; 
-	}
-
-	param = memory_pool_alloc (task->task_pool, sizeof (struct redirector_param));
-	param->url = url;
-	param->task = task;
-	param->state = STATE_CONNECT;
-	param->sock = s;
-	param->tree = url_tree;
-	param->suffix = suffix;
-	timeout = memory_pool_alloc (task->task_pool, sizeof (struct timeval));
-	timeout->tv_sec = surbl_module_ctx->connect_timeout / 1000;
-	timeout->tv_usec = surbl_module_ctx->connect_timeout - timeout->tv_sec * 1000;
-	event_set (&param->ev, s, EV_WRITE, redirector_callback, (void *)param);
-	event_add (&param->ev, timeout);
+    int s;
+    struct redirector_param *param;
+    struct timeval *timeout;
+
+    s = make_tcp_socket (&surbl_module_ctx->redirector_addr, surbl_module_ctx->redirector_port, FALSE, TRUE);
+
+    if (s == -1) {
+        msg_info ("register_redirector_call: <%s> cannot create tcp socket failed: %s", 
+                    task->message_id, strerror (errno));
+        task->save.saved --;
+        make_surbl_requests (url, task, url_tree, suffix);
+        return; 
+    }
+
+    param = memory_pool_alloc (task->task_pool, sizeof (struct redirector_param));
+    param->url = url;
+    param->task = task;
+    param->state = STATE_CONNECT;
+    param->sock = s;
+    param->tree = url_tree;
+    param->suffix = suffix;
+    timeout = memory_pool_alloc (task->task_pool, sizeof (struct timeval));
+    timeout->tv_sec = surbl_module_ctx->connect_timeout / 1000;
+    timeout->tv_usec = surbl_module_ctx->connect_timeout - timeout->tv_sec * 1000;
+    event_set (&param->ev, s, EV_WRITE, redirector_callback, (void *)param);
+    event_add (&param->ev, timeout);
 }
 
 static gboolean
 tree_url_callback (gpointer key, gpointer value, void *data)
 {
-	struct redirector_param *param = data;
-	struct uri *url = value;
-	f_str_t f;
-	char *urlstr, *host_end;
-	GError *err = NULL;
-
-	msg_debug ("surbl_test_url: check url %s", struri (url));
-
-	
-	if (surbl_module_ctx->use_redirector) {
-		f.begin = url->host;
-		f.len = url->hostlen;
-		if ((urlstr = format_surbl_request (param->task->task_pool, &f, NULL, &host_end, FALSE, &err)) != NULL) {
-			if (g_hash_table_lookup (surbl_module_ctx->redirector_hosts, urlstr) != NULL) {
-				register_redirector_call (url, param->task, param->tree, param->suffix);
-				param->task->save.saved++;
-				return FALSE;
-			}
-		}
-		make_surbl_requests (url, param->task, param->tree, param->suffix);
-	}
-	else {
-		if (param->task->worker->srv->cfg->memcached_servers_num > 0) {
-			register_memcached_call (url, param->task, param->tree, param->suffix);
-			param->task->save.saved++;
-		}
-		else {
-			make_surbl_requests (url, param->task, param->tree, param->suffix);
-		}
-	}
-
-	return FALSE;
+    struct redirector_param *param = data;
+    struct uri *url = value;
+    f_str_t f;
+    char *urlstr, *host_end;
+    GError *err = NULL;
+
+    msg_debug ("surbl_test_url: check url %s", struri (url));
+
+    
+    if (surbl_module_ctx->use_redirector) {
+        f.begin = url->host;
+        f.len = url->hostlen;
+        if ((urlstr = format_surbl_request (param->task->task_pool, &f, NULL, &host_end, FALSE, &err)) != NULL) {
+            if (g_hash_table_lookup (surbl_module_ctx->redirector_hosts, urlstr) != NULL) {
+                register_redirector_call (url, param->task, param->tree, param->suffix);
+                param->task->save.saved++;
+                return FALSE;
+            }
+        }
+        make_surbl_requests (url, param->task, param->tree, param->suffix);
+    }
+    else {
+        if (param->task->worker->srv->cfg->memcached_servers_num > 0) {
+            register_memcached_call (url, param->task, param->tree, param->suffix);
+            param->task->save.saved++;
+        }
+        else {
+            make_surbl_requests (url, param->task, param->tree, param->suffix);
+        }
+    }
+
+    return FALSE;
 }
 
 static void
 surbl_test_url (struct worker_task *task, void *user_data)
 {
-	GTree *url_tree;
-	GList *cur;
-	struct mime_text_part *part;
-	struct redirector_param param;
-	struct suffix_item *suffix = user_data;
-
-	url_tree = g_tree_new ((GCompareFunc)g_ascii_strcasecmp);
-	
-	param.tree = url_tree;
-	param.task = task;
-	param.suffix = suffix;
-	cur = task->text_parts;
-	while (cur) {
-		part = cur->data;
-		if (part->urls) {
-			g_tree_foreach (part->urls, tree_url_callback, &param); 
-		}
-		if (part->html_urls) {
-			g_tree_foreach (part->html_urls, tree_url_callback, &param); 
-		}
-
-		cur = g_list_next (cur);
-	}
-
-	memory_pool_add_destructor (task->task_pool, (pool_destruct_func)g_tree_destroy, url_tree);
+    GTree *url_tree;
+    GList *cur;
+    struct mime_text_part *part;
+    struct redirector_param param;
+    struct suffix_item *suffix = user_data;
+
+    url_tree = g_tree_new ((GCompareFunc)g_ascii_strcasecmp);
+    
+    param.tree = url_tree;
+    param.task = task;
+    param.suffix = suffix;
+    cur = task->text_parts;
+    while (cur) {
+        part = cur->data;
+        if (part->urls) {
+            g_tree_foreach (part->urls, tree_url_callback, &param); 
+        }
+        if (part->html_urls) {
+            g_tree_foreach (part->html_urls, tree_url_callback, &param); 
+        }
+
+        cur = g_list_next (cur);
+    }
+
+    memory_pool_add_destructor (task->task_pool, (pool_destruct_func)g_tree_destroy, url_tree);
 }
 
 static int
 surbl_filter (struct worker_task *task)
 {
-	/* XXX: remove this shit */
-	return 0;
+    /* XXX: remove this shit */
+    return 0;
 }
 
 static int 
 urls_command_handler (struct worker_task *task)
 {
-	GList *cur;
-	char *outbuf, *urlstr;
-	int r, num = 0, buflen;
-	struct uri *url;
-	GError *err = NULL;
-	GTree *url_tree;
-	f_str_t f;
-	char *host_end;
-
-	url_tree = g_tree_new ((GCompareFunc)g_ascii_strcasecmp);
-
-	/* First calculate buffer length */
-	cur = g_list_first (task->urls);
-	buflen = 0;
-	while (cur) {
-		url = cur->data;
-		buflen += strlen (struri (url)) + url->hostlen + sizeof (" <\"\">, ") - 1;	
-		cur = g_list_next (cur);
-	}
-
-	buflen += sizeof (RSPAMD_REPLY_BANNER " 0 OK" CRLF CRLF "URLs: ");
-
-	outbuf = memory_pool_alloc (task->task_pool, buflen * sizeof (char));
-
-	r = snprintf (outbuf, buflen, "%s 0 %s" CRLF, (task->proto == SPAMC_PROTO) ? SPAMD_REPLY_BANNER : RSPAMD_REPLY_BANNER, "OK");
-	
-	r += snprintf (outbuf + r, buflen - r - 2, "URLs: ");
-	
-	cur = g_list_first (task->urls);
-
-	while (cur) {
-		num ++;
-		url = cur->data;
-		if (g_tree_lookup (url_tree, struri (url)) == NULL) {
-			g_tree_insert (url_tree, struri (url), url);
-			f.begin = url->host;
-			f.len = url->hostlen;
-			if ((urlstr = format_surbl_request (task->task_pool, &f, NULL, &host_end, FALSE, &err)) != NULL) {
-				if (g_list_next (cur) != NULL) {
-					r += snprintf (outbuf + r, buflen - r - 2, "%s <\"%s\">, ", (char *)urlstr, struri (url));
-				}
-				else {
-					r += snprintf (outbuf + r, buflen - r - 2, "%s <\"%s\">", (char *)urlstr, struri (url));
-				}
-			}
-		}
-		cur = g_list_next (cur);
-	}
-	
-	outbuf[r++] = '\r'; outbuf[r++] = '\n';
-
-	rspamd_dispatcher_write (task->dispatcher, outbuf, r, FALSE, TRUE);
-	msg_info ("process_message: msg ok, id: <%s>, %d urls extracted", task->message_id, num);
-	g_tree_destroy (url_tree);
-
-	return 0;
+    GList *cur;
+    char *outbuf, *urlstr;
+    int r, num = 0, buflen;
+    struct uri *url;
+    GError *err = NULL;
+    GTree *url_tree;
+    f_str_t f;
+    char *host_end;
+
+    url_tree = g_tree_new ((GCompareFunc)g_ascii_strcasecmp);
+
+    /* First calculate buffer length */
+    cur = g_list_first (task->urls);
+    buflen = 0;
+    while (cur) {
+        url = cur->data;
+        buflen += strlen (struri (url)) + url->hostlen + sizeof (" <\"\">, ") - 1;  
+        cur = g_list_next (cur);
+    }
+
+    buflen += sizeof (RSPAMD_REPLY_BANNER " 0 OK" CRLF CRLF "URLs: ");
+
+    outbuf = memory_pool_alloc (task->task_pool, buflen * sizeof (char));
+
+    r = snprintf (outbuf, buflen, "%s 0 %s" CRLF, (task->proto == SPAMC_PROTO) ? SPAMD_REPLY_BANNER : RSPAMD_REPLY_BANNER, "OK");
+    
+    r += snprintf (outbuf + r, buflen - r - 2, "URLs: ");
+    
+    cur = g_list_first (task->urls);
+
+    while (cur) {
+        num ++;
+        url = cur->data;
+        if (g_tree_lookup (url_tree, struri (url)) == NULL) {
+            g_tree_insert (url_tree, struri (url), url);
+            f.begin = url->host;
+            f.len = url->hostlen;
+            if ((urlstr = format_surbl_request (task->task_pool, &f, NULL, &host_end, FALSE, &err)) != NULL) {
+                if (g_list_next (cur) != NULL) {
+                    r += snprintf (outbuf + r, buflen - r - 2, "%s <\"%s\">, ", (char *)urlstr, struri (url));
+                }
+                else {
+                    r += snprintf (outbuf + r, buflen - r - 2, "%s <\"%s\">", (char *)urlstr, struri (url));
+                }
+            }
+        }
+        cur = g_list_next (cur);
+    }
+    
+    outbuf[r++] = '\r'; outbuf[r++] = '\n';
+
+    rspamd_dispatcher_write (task->dispatcher, outbuf, r, FALSE, TRUE);
+    msg_info ("process_message: msg ok, id: <%s>, %d urls extracted", task->message_id, num);
+    g_tree_destroy (url_tree);
+
+    return 0;
 }
 
 
diff --git a/src/plugins/surbl.h b/src/plugins/surbl.h
index ea7f9359b..7169e59a1 100644
--- a/src/plugins/surbl.h
+++ b/src/plugins/surbl.h
@@ -37,6 +37,7 @@ struct surbl_ctx {
 	memory_pool_t *surbl_pool;
     GRegex *extract_hoster_regexp;
 	GRegex *extract_normal_regexp;
+	GRegex *extract_ip_regexp;
 	GRegex *extract_numeric_regexp;
 };
 
diff --git a/src/url.c b/src/url.c
index c089f4275..e5040ca95 100644
--- a/src/url.c
+++ b/src/url.c
@@ -57,7 +57,8 @@ static const char *text_url = "((https?|ftp)://)?"
 "|[a-z]{2}"
 "(?(1)|(?=/)))"
 "(?!\\w)"
-"|(?:\\d{1,3}\\.){3}\\d{1,3}(?(1)|(?=[/:]))"
+"|(?:\\d{1,3}\\.){3}\\d{1,3}(?(1)|(?=[/:]))" /* ip in dotted view */
+"|\\d{5,20}(?(1)|(?=[/:]))" /* ip in numeric view */
 ")"
 "(?::\\d{1,5})?"	/* port */
 "(?!\\.\\w)" /* host part ended, no more of this further on */