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XForms bug 302685 - XForms submission allows cross domain instance replacement. r=pedemonte,aaronr a=mkaply

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doronr%us.ibm.com 2005-08-03 14:30:54 +00:00
parent a3c8d78e87
commit e9f7469250
1 changed files with 28 additions and 13 deletions
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41
extensions/xforms/nsXFormsSubmissionElement.cpp
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@ -21,6 +21,7 @@
*
* Contributor(s):
* Darin Fisher <darin@meer.net>
* Doron Rosenberg <doronr@us.ibm.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
@ -851,28 +852,42 @@ nsXFormsSubmissionElement::SerializeDataXML(nsIDOMNode *data,
PRBool
nsXFormsSubmissionElement::CheckSameOrigin(nsIURI *aBaseURI, nsIURI *aTestURI)
{
PRBool result = PR_TRUE;
// we default to true to allow regular posts to work like html forms.
PRBool allowSubmission = PR_TRUE;
// We require same-origin for replace="instance" or XML submission
/* for replace="instance" or XML submission, we follow these strict guidelines:
- we default to denying submission
- if we are not replacing instance, then file:// urls can submit anywhere.
We don't allow fetching of content for file:// urls since for example
XMLHttpRequest doesn't, since file:// doesn't always mean it is local.
- if we are still denying, we check the permission manager to see if the
domain hosting the XForm has been granted permission to get/send data
anywhere
- lastly, if submission is still being denied, we do a same origin check
*/
if (mFormat & (ENCODING_XML | ENCODING_MULTIPART_RELATED) || mIsReplaceInstance) {
// if we don't replace the instance, we allow file:// or sites whitelisted
// to submit data
if (!mIsReplaceInstance) {
aBaseURI->SchemeIs("file", &result);
// if same origin is required, default to false
allowSubmission = PR_FALSE;
// lets check the permission manager
if (!result) {
result = CheckPermissionManager(aBaseURI);
}
// if we don't replace the instance, we allow file:// to submit data anywhere
if (!mIsReplaceInstance) {
aBaseURI->SchemeIs("file", &allowSubmission);
}
if (!result) {
result = nsXFormsUtils::CheckSameOrigin(aBaseURI, aTestURI);
// let's check the permission manager
if (!allowSubmission) {
allowSubmission = CheckPermissionManager(aBaseURI);
}
// if none of the above checks have allowed the submission, we do a
// same origin check.
if (!allowSubmission) {
allowSubmission = nsXFormsUtils::CheckSameOrigin(aBaseURI, aTestURI);
}
}
return result;
return allowSubmission;
}
PRBool