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(_gssapi_verify_pad): verify padding of a gss wrapped message and

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return its length


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@12686 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2003-08-28 10:22:03 +00:00
parent 819d80283e
commit 9ef52e1041
2 changed files with 58 additions and 0 deletions
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29
lib/gssapi/decapsulate.c
View File

@@ -178,3 +178,32 @@ gssapi_krb5_decapsulate(OM_uint32 *minor_status,
out_data->data = p;
return GSS_S_COMPLETE;
}
/*
* Verify padding of a gss wrapped message and return its length.
*/
OM_uint32
_gssapi_verify_pad(gss_buffer_t wrapped_token,
size_t datalen,
size_t *padlen)
{
u_char *pad;
size_t padlength;
int i;
pad = (u_char *)wrapped_token->value + wrapped_token->length - 1;
padlength = *pad;
if (padlength > datalen)
return GSS_S_BAD_MECH;
for (i = padlength; i > 0 && *pad == padlength; i--, pad--)
;
if (i != 0)
return GSS_S_BAD_MIC;
*padlen = padlength;
return 0;
}

29
lib/gssapi/krb5/decapsulate.c
View File

@@ -178,3 +178,32 @@ gssapi_krb5_decapsulate(OM_uint32 *minor_status,
out_data->data = p;
return GSS_S_COMPLETE;
}
/*
* Verify padding of a gss wrapped message and return its length.
*/
OM_uint32
_gssapi_verify_pad(gss_buffer_t wrapped_token,
size_t datalen,
size_t *padlen)
{
u_char *pad;
size_t padlength;
int i;
pad = (u_char *)wrapped_token->value + wrapped_token->length - 1;
padlength = *pad;
if (padlength > datalen)
return GSS_S_BAD_MECH;
for (i = padlength; i > 0 && *pad == padlength; i--, pad--)
;
if (i != 0)
return GSS_S_BAD_MIC;
*padlen = padlength;
return 0;
}