thread::attribute only available in Boost 1.50 or later

[metaproxy-moved-to-github.git] / src / filter_http_client.cpp

diff --git a/src/filter_http_client.cpp b/src/filter_http_client.cpp
index e756ce5..e3d6116 100644 (file)
--- a/src/filter_http_client.cpp
+++ b/src/filter_http_client.cpp
@@ -51,6 +51,8 @@ namespace metaproxy_1 {
             std::string proxy_host;
             std::string default_host;
             int max_redirects;
+            bool x_forwarded_for;
+            bool bind_host;
             Rep();
         };
     }
@@ -58,7 +60,9 @@ namespace metaproxy_1 {
 
 yf::HTTPClient::Rep::Rep()
 {
-    max_redirects = -0;
+    max_redirects = 0;
+    x_forwarded_for = false;
+    bind_host = false;
 }
 
 yf::HTTPClient::HTTPClient() : m_p(new Rep)
@@ -89,6 +93,21 @@ void yf::HTTPClient::Rep::proxy(mp::Package &package)
 
         yaz_url_set_max_redirects(yaz_url, max_redirects);
 
+        if (x_forwarded_for)
+        {
+            std::string peer_name2 = package.origin().get_address();
+            const char *peer_name1 =
+                z_HTTP_header_lookup(hreq->headers, "X-Forwarded-For");
+            std::string pcomb;
+            if (peer_name1)
+            {
+                pcomb.append(peer_name1);
+                pcomb.append(", ");
+            }
+            pcomb.append(peer_name2);
+            z_HTTP_header_set(o, &hreq->headers, "X-Forwarded-For",
+                              pcomb.c_str());
+        }
         std::string uri;
         if (hreq->path[0] == '/')
         {
@@ -97,24 +116,38 @@ void yf::HTTPClient::Rep::proxy(mp::Package &package)
         }
         else
             uri = hreq->path;
-        Z_HTTP_Response *http_response = 0;
-        if (uri.length())
-            http_response =
-            yaz_url_exec(yaz_url, uri.c_str(), hreq->method,
-                         hreq->headers, hreq->content_buf,
-                         hreq->content_len);
-        if (http_response)
+
+        if (bind_host)
         {
-            res_gdu = o.create_HTTP_Response(package.session(), hreq, 200);
-            z_HTTP_header_remove(&http_response->headers, "Transfer-Encoding");
-            res_gdu->u.HTTP_Response = http_response;
+            std::string host = package.origin().get_bind_address();
+            uri.append(" ");
+            uri.append(host);
         }
-        else
+        if (!uri.length())
         {
             res_gdu = o.create_HTTP_Response_details(
                 package.session(),
-                hreq, 502,
-                yaz_url_get_error(yaz_url));
+                hreq, 404,
+                "http_client: no target URI specified");
+        }
+        else
+        {
+            Z_HTTP_Response * http_response =
+                yaz_url_exec(yaz_url, uri.c_str(), hreq->method,
+                             hreq->headers, hreq->content_buf,
+                             hreq->content_len);
+            if (http_response)
+            {
+                res_gdu = o.create_HTTP_Response(package.session(), hreq, 200);
+                z_HTTP_header_remove(&http_response->headers, "Transfer-Encoding");
+                res_gdu->u.HTTP_Response = http_response;
+            }
+            else
+            {
+                res_gdu = o.create_HTTP_Response_details(
+                    package.session(),
+                    hreq, 502, yaz_url_get_error(yaz_url));
+            }
         }
         package.response() = res_gdu;
         yaz_url_destroy(yaz_url);
@@ -157,6 +190,14 @@ void mp::filter::HTTPClient::configure(const xmlNode * ptr, bool test_only,
                      " in http_client filter");
             }
         }
+        else if (!strcmp((const char *) ptr->name, "x-forwarded-for"))
+        {
+            m_p->x_forwarded_for = mp::xml::get_bool(ptr, 0);
+        }
+        else if (!strcmp((const char *) ptr->name, "bind_host"))
+        {
+            m_p->bind_host = mp::xml::get_bool(ptr, 0);
+        }
         else
         {
             throw mp::filter::FilterException