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Validate the "this" argument for methods

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svn path=/trunk/; revision=615
This commit is contained in:
Colin Walters 2008-09-19 14:55:20 +00:00
parent 4e4c8c137d
commit c760a31723
1 changed files with 59 additions and 1 deletions
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60
gtypelib.c
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@ -705,6 +705,7 @@ validate_function_blob (ValidateContext *ctx,
GTypelib *typelib = ctx->typelib;
FunctionBlob *blob;
SignatureBlob *sigblob;
gboolean is_method;
if (typelib->len < offset + sizeof (FunctionBlob))
{
@ -733,6 +734,17 @@ validate_function_blob (ValidateContext *ctx,
if (!validate_name (typelib, "function symbol", typelib->data, blob->symbol, error))
return FALSE;
switch (container_type)
{
case BLOB_TYPE_BOXED:
case BLOB_TYPE_OBJECT:
case BLOB_TYPE_INTERFACE:
is_method = !(blob->constructor || blob->setter || blob->getter || blob->wraps_vfunc);
break;
default:
is_method = FALSE;
}
if (blob->constructor)
{
@ -780,7 +792,6 @@ validate_function_blob (ValidateContext *ctx,
}
/* FIXME: validate index range */
/* FIXME: validate "this" argument for methods */
if (!validate_signature_blob (typelib, blob->signature, error))
return FALSE;
@ -810,6 +821,53 @@ validate_function_blob (ValidateContext *ctx,
return FALSE;
}
}
else if (is_method)
{
guint32 this_offset;
guint32 this_type_offset;
ArgBlob *this;
SimpleTypeBlob *thistype;
InterfaceTypeBlob *thistype_iface;
if (sigblob->n_arguments == 0)
{
g_set_error (error,
G_TYPELIB_ERROR,
G_TYPELIB_ERROR_INVALID,
"Invalid 0-argument method");
}
this_offset = blob->signature + sizeof (SignatureBlob);
this = (ArgBlob*) &typelib->data[this_offset];
this_type_offset = this_offset + G_STRUCT_OFFSET (ArgBlob, arg_type);
thistype = (SimpleTypeBlob *)&typelib->data[this_type_offset];
if (thistype->reserved == 0 &&
thistype->reserved2 == 0)
{
g_set_error (error,
G_TYPELIB_ERROR,
G_TYPELIB_ERROR_INVALID_BLOB,
"Non-reference type tag %d found for \"this\" argument",
thistype->tag);
return FALSE;
}
thistype_iface = (InterfaceTypeBlob*)&typelib->data[thistype->offset];
switch (thistype_iface->tag)
{
case GI_TYPE_TAG_INTERFACE:
break;
default:
g_set_error (error,
G_TYPELIB_ERROR,
G_TYPELIB_ERROR_INVALID_BLOB,
"Invalid type tag %d found for \"this\" argument",
thistype_iface->tag);
return FALSE;
}
}
pop_context (ctx);