* Detect when the client browser is capable of gzip encoding

[citadel.git] / webcit / context_loop.c

diff --git a/webcit/context_loop.c b/webcit/context_loop.c
index 5f67f93859d8af908764c26e0784e02c90b4cefa..9b744f13f12708675abade12df20fa94ff8f489d 100644 (file)
--- a/webcit/context_loop.c
+++ b/webcit/context_loop.c
@@ -35,6 +35,11 @@
 #include <stdarg.h>
 #include <pthread.h>
 #include <signal.h>
+
+#ifdef WITH_ZLIB
+#include <zlib.h>
+#endif
+
 #include "webcit.h"
 #include "webserver.h"
 
@@ -152,6 +157,7 @@ int req_gets(int sock, char *buf, char *hold)
                                return(0);
                        }
        }
+
        return(0);
 }
 
@@ -231,6 +237,10 @@ void context_loop(int sock)
        int desired_session = 0;
        int got_cookie = 0;
        struct wcsession *TheSession, *sptr;
+       char enc[SIZ];
+       char encodings[SIZ];
+       int gzip = 0;
+       int i;
 
        /*
         * Find out what it is that the web browser is asking for
@@ -238,12 +248,23 @@ void context_loop(int sock)
        memset(hold, 0, sizeof(hold));
        do {
                if (req_gets(sock, buf, hold) < 0) return;
+
                if (!strncasecmp(buf, "Cookie: webcit=", 15)) {
                        cookie_to_stuff(&buf[15], &desired_session,
                                NULL, NULL, NULL);
                        got_cookie = 1;
                }
 
+               if (!strncasecmp(buf, "Accept-encoding: ", 17)) {
+                       extract_token(encodings, &buf[17], 0, ';');
+                       for (i=0; i<num_tokens(encodings, ','); ++i) {
+                               extract_token(enc, encodings, i, ',');
+                               if (!strcasecmp(enc, "gzip")) {
+                                       gzip = 1;
+                               }
+                       }
+               }
+
                hptr = (struct httprequest *)
                        malloc(sizeof(struct httprequest));
                if (req == NULL)
@@ -334,7 +355,7 @@ void context_loop(int sock)
        pthread_setspecific(MyConKey, (void *)TheSession);
        TheSession->http_sock = sock;
        TheSession->lastreq = time(NULL);                       /* log */
-       session_loop(req);              /* perform the requested transaction */
+       session_loop(req, gzip);        /* perform the requested transaction */
        pthread_mutex_unlock(&TheSession->SessionMutex);        /* unbind */
 
        /* Free the request buffer */