egg: Check that bytes are valid when they come into ASN.1

diff --git a/egg/egg-asn1x.c b/egg/egg-asn1x.c
index fc80d8f..cea8dad 100644 (file)
--- a/egg/egg-asn1x.c
+++ b/egg/egg-asn1x.c
@@ -1214,6 +1214,8 @@ egg_asn1x_decode_no_validate (GNode *asn,
        egg_asn1x_clear (asn);
 
        dat = egg_bytes_get_data (data);
+       g_return_val_if_fail (dat != NULL, FALSE);
+
        size = egg_bytes_get_size (data);
        if (!anode_decode_tlv_for_data (dat, dat + size, &tlv))
                return anode_failure (asn, "content is not encoded properly");
@@ -1597,6 +1599,8 @@ anode_encoder_unsigned (gpointer user_data,
         */
 
        p = egg_bytes_get_data (value);
+       g_return_val_if_fail (p != NULL, FALSE);
+
        sign = !!(p[0] & 0x80);
        if (sign) {
                g_assert (n_data > 1);
@@ -2853,6 +2857,8 @@ egg_asn1x_take_integer_as_raw (GNode *node,
 
        /* Make sure the integer is properly encoded in twos complement*/
        p = egg_bytes_get_data (value);
+       g_return_if_fail (p != NULL);
+
        sign = !!(p[0] & 0x80);
        if (sign) {
                g_warning ("integer in egg_asn1x_set_integer_as_raw is not two's complement");
@@ -2885,6 +2891,8 @@ egg_asn1x_take_integer_as_usg (GNode *node,
 
        /* Make sure the integer is properly encoded in twos complement*/
        p = egg_bytes_get_data (value);
+       g_return_if_fail (p != NULL);
+
        sign = !!(p[0] & 0x80);
        len = egg_bytes_get_size (value);
 
@@ -2948,6 +2956,8 @@ egg_asn1x_set_element_raw (GNode *node,
        memset (&dtlv, 0, sizeof (dtlv));
 
        data = egg_bytes_get_data (element);
+       g_return_val_if_fail (data != NULL, FALSE);
+
        size = egg_bytes_get_size (element);
 
        /* Decode the beginning TLV */