diff -uNpar mod_rpaf/mod_rpaf-2.0.c mod_rpaf.realip/mod_rpaf-2.0.c

--- mod_rpaf/mod_rpaf-2.0.c	2004-03-17 18:47:30 +0300

+++ mod_rpaf.realip/mod_rpaf-2.0.c	2007-03-08 13:03:57 +0300

@@ -61,6 +61,9 @@

  * This module does the opposite of mod_proxy_add_forward written by

  * Ask BjЬrn Hansen. http://develooper.com/code/mpaf/ or mod_proxy

  * in 1.3.25 and above and mod_proxy from Apache 2.0

+ *

+ * Patched for nginx/mod_realip X-Real-IP header detection

+ * by Konstantin A. Lepikhov <lakostis@altlinux.org>

  * 

  */ 

@@ -161,10 +164,26 @@ static int change_remote_ip(request_rec 

                     apr_table_set(r->headers_in, "Host", apr_pstrdup(r->pool, hostvalue));

                     r->hostname = apr_pstrdup(r->pool, hostvalue);

                     ap_update_vhost_from_headers(r);

+                } else if (hostvalue = apr_table_get(r->headers_in, "X-Real-IP")) {

+                    /* nginx proxy frontend or 1.3 mod_realip */

+                    apr_table_set(r->headers_in, "Host", apr_pstrdup(r->pool, hostvalue));

+                    r->hostname = apr_pstrdup(r->pool, hostvalue);

+                    ap_update_vhost_from_headers(r);

                 }

             }

-        }

+	} else {

+		if (fwdvalue = apr_table_get(r->headers_in, "X-Real-IP")) {

+			apr_array_header_t *arr = apr_array_make(r->pool, 0, sizeof(char*));

+			while (*fwdvalue && (val = ap_get_token(r->pool, &fwdvalue, 1))) {

+				*(char **)apr_array_push(arr) = apr_pstrdup(r->pool, val);

+				if (*fwdvalue != '\0')

+					++fwdvalue;

+			}

+			r->connection->remote_ip = apr_pstrdup(r->connection->pool, ((char **)arr->elts)[((arr->nelts)-1)]);

+			r->connection->remote_addr->sa.sin.sin_addr.s_addr = inet_addr(r->connection->remote_ip);

+		}

+	}

     }

     return DECLINED;

 }

@@ -182,14 +201,14 @@ static const command_rec rpaf_cmds[] = {

                  rpaf_sethostname,

                  NULL,

                  RSRC_CONF,

-                 "Let mod_rpaf set the hostname from X-Host header and update vhosts"

+                 "Let mod_rpaf set the hostname from X-Host or X-Real-IP header and update vhosts"

                  ),

     AP_INIT_ITERATE(

                     "RPAFproxy_ips",

                     rpaf_set_proxy_ip,

                     NULL,

                     RSRC_CONF,

-                    "IP(s) of Proxy server setting X-Forwarded-For header"

+                    "IP(s) of Proxy server setting X-Forwarded-For or X-Real-IP header"

                     ),

     { NULL }

 };