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vnc: Clean up vncws_send_handshake_response() 

Use appropriate types, drop superfluous casts, use sizeof, don't
exploit that this particular call of gnutls_fingerprint() doesn't
change its last argument.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Markus Armbruster 2013-01-25 10:31:16 +01:00 committed by Stefan Hajnoczi
parent 0893d46014
commit cfba8e6f92
1 changed files with 6 additions and 5 deletions
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11
ui/vnc-ws.c
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@ -120,10 +120,11 @@ static char *vncws_extract_handshake_entry(const char *handshake,
static void vncws_send_handshake_response(VncState *vs, const char* key)
{
char combined_key[WS_CLIENT_KEY_LEN + WS_GUID_LEN + 1];
char hash[SHA1_DIGEST_LEN];
size_t hash_size = SHA1_DIGEST_LEN;
unsigned char hash[SHA1_DIGEST_LEN];
size_t hash_size = sizeof(hash);
char *accept = NULL, *response = NULL;
gnutls_datum_t in;
int ret;
g_strlcpy(combined_key, key, WS_CLIENT_KEY_LEN + 1);
g_strlcat(combined_key, WS_GUID, WS_CLIENT_KEY_LEN + WS_GUID_LEN + 1);
@ -131,9 +132,9 @@ static void vncws_send_handshake_response(VncState *vs, const char* key)
/* hash and encode it */
in.data = (void *)combined_key;
in.size = WS_CLIENT_KEY_LEN + WS_GUID_LEN;
if (gnutls_fingerprint(GNUTLS_DIG_SHA1, &in, hash, &hash_size)
== GNUTLS_E_SUCCESS) {
accept = g_base64_encode((guchar *)hash, SHA1_DIGEST_LEN);
ret = gnutls_fingerprint(GNUTLS_DIG_SHA1, &in, hash, &hash_size);
if (ret == GNUTLS_E_SUCCESS && hash_size <= SHA1_DIGEST_LEN) {
accept = g_base64_encode(hash, hash_size);
}
if (accept == NULL) {
VNC_DEBUG("Hashing Websocket combined key failed\n");