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[Qemu-devel] [PATCH v1 6/7] io: cope with websock 'Connection' header ha


From: Daniel P. Berrange
Subject: [Qemu-devel] [PATCH v1 6/7] io: cope with websock 'Connection' header having multiple values
Date: Tue, 10 Oct 2017 16:43:27 +0100

The noVNC server sends a header "Connection: keep-alive, Upgrade" which
fails our simple equality test. Split the header on ',', trim whitespace
and then check for 'upgrade' token.

Signed-off-by: Daniel P. Berrange <address@hidden>
---
 io/channel-websock.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/io/channel-websock.c b/io/channel-websock.c
index 455f5e322c..a21915881d 100644
--- a/io/channel-websock.c
+++ b/io/channel-websock.c
@@ -374,6 +374,9 @@ static void 
qio_channel_websock_handshake_process(QIOChannelWebsock *ioc,
     size_t nhdrs = G_N_ELEMENTS(hdrs);
     const char *protocols = NULL, *version = NULL, *key = NULL,
         *host = NULL, *connection = NULL, *upgrade = NULL;
+    char **connectionv;
+    bool upgraded = false;
+    size_t i;
 
     nhdrs = qio_channel_websock_extract_headers(ioc, buffer, hdrs, nhdrs, 
errp);
     if (!nhdrs) {
@@ -440,7 +443,16 @@ static void 
qio_channel_websock_handshake_process(QIOChannelWebsock *ioc,
         goto bad_request;
     }
 
-    if (strcasecmp(connection, QIO_CHANNEL_WEBSOCK_CONNECTION_UPGRADE) != 0) {
+    connectionv = g_strsplit(connection, ",", 0);
+    for (i = 0; connectionv != NULL && connectionv[i] != NULL; i++) {
+        g_strstrip(connectionv[i]);
+        if (strcasecmp(connectionv[i],
+                       QIO_CHANNEL_WEBSOCK_CONNECTION_UPGRADE) == 0) {
+            upgraded = true;
+        }
+    }
+    g_strfreev(connectionv);
+    if (!upgraded) {
         error_setg(errp, "No connection upgrade requested '%s'", connection);
         goto bad_request;
     }
-- 
2.13.5




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