getting the paraz2 server host and port info from the HTTP request, and mirroring...

pazpar2-server-host
pazpar2-server-port
Notice these change according to the connection the client did made, so if a paraz2 is hidden behind firewalling and port-forwarding, the server host and port of the shielding firewall is reported back, and not the shielded host and port numbers.

diff --git a/src/eventl.c b/src/eventl.c
index 89ffb12..cc8a6b9 100644 (file)
--- a/src/eventl.c
+++ b/src/eventl.c
@@ -6,7 +6,7 @@
  */
 
 /*
- * $Id: eventl.c,v 1.2 2007-01-08 12:43:41 adam Exp $
+ * $Id: eventl.c,v 1.3 2007-03-28 12:05:18 marc Exp $
  * Based on revision YAZ' server/eventl.c 1.29.
  */
 
@@ -17,11 +17,7 @@
 #include <cconfig.h>
 #endif
 
-#ifdef WIN32
-#include <winsock.h>
-#else
-#include <unistd.h>
-#endif
+
 #include <stdlib.h>
 #include <errno.h>
 #include <string.h>
@@ -30,10 +26,13 @@
 #include <yaz/log.h>
 #include <yaz/comstack.h>
 #include <yaz/xmalloc.h>
-#include "eventl.h"
 #include <yaz/statserv.h>
 
-IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags)
+#include "eventl.h"
+
+
+IOCHAN iochan_create(int fd,  struct sockaddr_in *addr_in, 
+                     IOC_CALLBACK cb, int flags)
 {
     IOCHAN new_iochan;
 
@@ -41,6 +40,14 @@ IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags)
        return 0;
     new_iochan->destroyed = 0;
     new_iochan->fd = fd;
+
+    if(addr_in){
+        new_iochan->addr_in.sin_family = addr_in->sin_family;
+        new_iochan->addr_in.sin_port = addr_in->sin_port;
+        new_iochan->addr_in.sin_addr = addr_in->sin_addr;
+        strncpy(new_iochan->addr_str, inet_ntoa(addr_in->sin_addr), 64);
+    }
+
     new_iochan->flags = flags;
     new_iochan->fun = cb;
     new_iochan->force_event = 0;

diff --git a/src/eventl.h b/src/eventl.h
index 199d944..aee2106 100644 (file)
--- a/src/eventl.h
+++ b/src/eventl.h
@@ -3,8 +3,8 @@
  * See the file LICENSE for details.
  * Sebastian Hammer, Adam Dickmeiss
  *
- * $Log: eventl.h,v $
- * Revision 1.1  2006-12-20 20:47:16  quinn
+ * $Id: eventl.h,v 1.2 2007-03-28 12:05:18 marc Exp $
+ * Revision 1.1  2006/12/20 20:47:16  quinn
  * Reorganized source tree
  *
  * Revision 1.3  2006/12/12 02:36:24  quinn
@@ -61,6 +61,14 @@
 
 #include <time.h>
 
+#ifdef WIN32
+#include <winsock.h>
+#else
+#include <unistd.h>
+#include <arpa/inet.h>
+#endif
+
+
 struct iochan;
 
 typedef void (*IOC_CALLBACK)(struct iochan *i, int event);
@@ -68,6 +76,8 @@ typedef void (*IOC_CALLBACK)(struct iochan *i, int event);
 typedef struct iochan
 {
     int fd;
+    struct sockaddr_in addr_in;
+    char addr_str[64];
     int flags;
 #define EVENT_INPUT     0x01
 #define EVENT_OUTPUT    0x02
@@ -101,7 +111,8 @@ typedef struct iochan
 #define iochan_settimeout(i, t) ((i)->max_idle = (t), (i)->last_event = time(0))
 #define iochan_activity(i) ((i)->last_event = time(0))
 
-IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags);
+IOCHAN iochan_create(int fd, struct sockaddr_in * addr_in, 
+                     IOC_CALLBACK cb, int flags);
 int event_loop(IOCHAN *iochans);
 
 #endif

diff --git a/src/http.c b/src/http.c
index 533df30..deb500c 100644 (file)
--- a/src/http.c
+++ b/src/http.c
@@ -1,5 +1,5 @@
 /*
- * $Id: http.c,v 1.13 2007-03-27 13:41:23 marc Exp $
+ * $Id: http.c,v 1.14 2007-03-28 12:05:18 marc Exp $
  */
 
 #include <stdio.h>
@@ -14,6 +14,7 @@
 #include <netdb.h>
 #include <errno.h>
 #include <assert.h>
+#include <string.h>
 
 #if HAVE_CONFIG_H
 #include <cconfig.h>
@@ -37,8 +38,10 @@ static struct http_channel *http_create(void);
 static void http_destroy(IOCHAN i);
 
 extern IOCHAN channel_list;
+//extern struct parameters global_parameters;
 
-static struct sockaddr_in *proxy_addr = 0; // If this is set, we proxy normal HTTP requests
+// If this is set, we proxy normal HTTP requests
+static struct sockaddr_in *proxy_addr = 0; 
 static char proxy_url[256] = "";
 static char myurl[256] = "";
 static struct http_buf *http_buf_freelist = 0;
@@ -516,17 +519,27 @@ struct http_header * http_header_append(struct http_channel *ch,
                                         const char *name, 
                                         const char *value)
 {
-    struct http_header *hpnew = nmem_malloc(ch->nmem, sizeof *hpnew);
+    struct http_header *hpnew = 0; 
+
+    if (!hp | !ch)
+        return 0;
 
     while (hp && hp->next)
         hp = hp->next;
 
-     hpnew->name = nmem_strdup(ch->nmem, name);
-     hpnew->value = nmem_strdup(ch->nmem, value);
-     hpnew->next = 0;
-     hp->next = hpnew;
-     hp = hp->next;
-     return hpnew;
+    if(name && strlen(name)&& value && strlen(value)){
+        hpnew = nmem_malloc(ch->nmem, sizeof *hpnew);
+        hpnew->name = nmem_strdup(ch->nmem, name);
+        hpnew->value = nmem_strdup(ch->nmem, value);
+        
+        hpnew->next = 0;
+        hp->next = hpnew;
+        hp = hp->next;
+        
+        return hpnew;
+    }
+
+    return hp;
 }
 
     
@@ -537,7 +550,8 @@ static int http_proxy(struct http_request *rq)
     struct http_proxy *p = c->proxy;
     struct http_header *hp;
     struct http_buf *requestbuf;
-    //struct conf_server *ser = global_parameters.server;
+    char server_host[64] = "";
+    char server_port[16] = "";
 
 
     if (!p) // This is a new connection. Create a proxy channel
@@ -576,13 +590,13 @@ static int http_proxy(struct http_request *rq)
         p->first_response = 1;
         c->proxy = p;
         // We will add EVENT_OUTPUT below
-        p->iochan = iochan_create(sock, proxy_io, EVENT_INPUT);
+        p->iochan = iochan_create(sock, 0, proxy_io, EVENT_INPUT);
         iochan_setdata(p->iochan, p);
         p->iochan->next = channel_list;
         channel_list = p->iochan;
     }
 
-    // Modify Host: header
+    // Modify Host: header, but getting the host and port info first
     for (hp = rq->headers; hp; hp = hp->next)
         if (!strcmp(hp->name, "Host"))
             break;
@@ -591,16 +605,37 @@ static int http_proxy(struct http_request *rq)
         yaz_log(YLOG_WARN, "Failed to find Host header in proxy");
         return -1;
     }
+    
+    {
+        char * colon = 0;
+        
+        if((colon = strchr(hp->value, ':'))){
+            int collen = colon - hp->value;
+            strncpy(server_host, hp->value, (collen < 64) ? collen : 64 );
+            strncpy(server_port, colon + 1, 16);
+        } else {
+            strncpy(server_host, hp->value, 64);
+            strncpy(server_port, hp->value, 16);
+        }
+    }
+  
     hp->value = nmem_strdup(c->nmem, proxy_url);
 
-    // Add new header about paraz2 version, host, remote client address, etc. 
-        
-    hp = rq->headers;
-    hp = http_header_append(c, hp, PACKAGE_NAME "-version", PACKAGE_VERSION);
-    //hp = http_header_append(c, hp, PACKAGE_NAME "-server-host", ser->host);
-    //hp = http_header_append(c, hp, PACKAGE_NAME "-server-port", ser->port);
-    //hp = http_header_append(c, hp, PACKAGE_NAME "-remote-host", "blabla");
-    //hp = http_header_append(c, hp, PACKAGE_NAME "-remote-port", "blabla");
+    // Add new header about paraz2 version, host, remote client address, etc.
+    {
+
+        hp = rq->headers;
+        hp = http_header_append(c, hp, 
+                                PACKAGE_NAME "-version", PACKAGE_VERSION);
+        hp = http_header_append(c, hp, 
+                                PACKAGE_NAME "-server-host", server_host);
+        //sprintf(server_port, "%d",  ser->port);
+        hp = http_header_append(c, hp, 
+                                PACKAGE_NAME "-server-port", server_port);
+        hp = http_header_append(c, hp, 
+                                PACKAGE_NAME "-remote-addr", 
+                                c->iochan->addr_str);
+    }
 
     requestbuf = http_serialize_request(rq);
     http_buf_enqueue(&p->oqueue, requestbuf);
@@ -925,7 +960,7 @@ static void http_accept(IOCHAN i, int event)
         yaz_log(YLOG_FATAL|YLOG_ERRNO, "fcntl2");
 
     yaz_log(YLOG_DEBUG, "New command connection");
-    c = iochan_create(s, http_io, EVENT_INPUT | EVENT_EXCEPT);
+    c = iochan_create(s, &addr, http_io, EVENT_INPUT | EVENT_EXCEPT);
 
     ch = http_create();
     ch->iochan = c;
@@ -988,7 +1023,7 @@ void http_init(const char *addr)
     if (listen(l, SOMAXCONN) < 0) 
         yaz_log(YLOG_FATAL|YLOG_ERRNO, "listen");
 
-    c = iochan_create(l, http_accept, EVENT_INPUT | EVENT_EXCEPT);
+    c = iochan_create(l, &myaddr, http_accept, EVENT_INPUT | EVENT_EXCEPT);
     c->next = channel_list;
     channel_list = c;
 }

diff --git a/src/http_command.c b/src/http_command.c
index 223903d..4d6c355 100644 (file)
--- a/src/http_command.c
+++ b/src/http_command.c
@@ -1,5 +1,5 @@
 /*
- * $Id: http_command.c,v 1.28 2007-03-20 07:27:51 adam Exp $
+ * $Id: http_command.c,v 1.29 2007-03-28 12:05:18 marc Exp $
  */
 
 #include <stdio.h>
@@ -53,7 +53,7 @@ struct http_session *http_session_create()
     r->timestamp = 0;
     r->next = session_list;
     session_list = r;
-    r->timeout_iochan = iochan_create(-1, session_timeout, 0);
+    r->timeout_iochan = iochan_create(-1, 0, session_timeout, 0);
     iochan_setdata(r->timeout_iochan, r);
     iochan_settimeout(r->timeout_iochan, global_parameters.session_timeout);
     r->timeout_iochan->next = channel_list;

diff --git a/src/pazpar2.c b/src/pazpar2.c
index 1a8fdfa..31cf431 100644 (file)
--- a/src/pazpar2.c
+++ b/src/pazpar2.c
@@ -1,4 +1,4 @@
-/* $Id: pazpar2.c,v 1.55 2007-03-28 04:33:41 quinn Exp $ */
+/* $Id: pazpar2.c,v 1.56 2007-03-28 12:05:18 marc Exp $ */
 
 #include <stdlib.h>
 #include <stdio.h>
@@ -1020,7 +1020,7 @@ static struct connection *connection_create(struct client *cl)
     cl->connection = new;
     new->link = link;
 
-    new->iochan = iochan_create(cs_fileno(link), handler, 0);
+    new->iochan = iochan_create(cs_fileno(link), 0, handler, 0);
     iochan_setdata(new->iochan, new);
     new->iochan->next = channel_list;
     channel_list = new->iochan;