Unshare from Nextcloud to ownCloud doesn't work. #352
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Security flaw: Marek ---share---> Mahdi ---reshare---> Milan Marek ---unshare---> Mahdi | Mahdi cannot she the share anymore Flaw: Milan can still see the share! Marek doesn't see any shared status on the file he just unshared. |
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Also: |
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pondersource/sciencemesh-php#171 Reshare: Unshare: |
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It is probably a config mismatch since this URL |
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Regarding the unshare chain: On my nextcloud I could not see any information about the file being shared. In the logs I had impression, that CESNET was using another token (from other files I shared to them directly). At least that is how I've interpreted the line in logs: dRBXXXXXXXXXXXXXXXXXXXXXXXXXXXXX is the token I found in oc_share table and was associated to another share with CESNET. 1.2.3.4 was CESNET IP. When I deleted the other shares, Milan could not see Directory A. I see at least a few potentials/bugs here:
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During debug session with Marek, Milan, Giuseppe, Antoon, Thirsa, David, Mirek and David etc.
We found that we can unshare from oc to oc, oc to nc but not nc to OC:
Nextcloud log:
{ "reqId": "0JexICKyaKvpcurBglCv", "level": 3, "time": "2023-06-02T12:52:58+00:00", "remoteAddr": "192.248.171.117", "user": "einstein", "app": "no app in context", "method": "DELETE", "url": "/ocs/v2.php/apps/files_sharing/api/v1/shares/14", "message": "Server error: `POST https://sciencemesh.cesnet.cz/ocs/v2.php/cloud/shares/14/unshare?format=json` resulted in a `500 Internal Server Error` response:\nInternal Server Error\n", "userAgent": "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/113.0", "version": "26.0.0.6", "exception": { "Exception": "GuzzleHttp\\Exception\\ServerException", "Message": "Server error: `POST https://sciencemesh.cesnet.cz/ocs/v2.php/cloud/shares/14/unshare?format=json` resulted in a `500 Internal Server Error` response:\nInternal Server Error\n", "Code": 500, "Trace": [ { "file": "/var/www/html/3rdparty/guzzlehttp/guzzle/src/Middleware.php", "line": 69, "function": "create", "class": "GuzzleHttp\\Exception\\RequestException", "type": "::" }, { "file": "/var/www/html/3rdparty/guzzlehttp/promises/src/Promise.php", "line": 204, "function": "GuzzleHttp\\{closure}", "class": "GuzzleHttp\\Middleware", "type": "::", "args": [ "*** sensitive parameters replaced ***" ] }, { "file": "/var/www/html/3rdparty/guzzlehttp/promises/src/Promise.php", "line": 153, "function": "callHandler", "class": "GuzzleHttp\\Promise\\Promise", "type": "::" }, { "file": "/var/www/html/3rdparty/guzzlehttp/promises/src/TaskQueue.php", "line": 48, "function": "GuzzleHttp\\Promise\\{closure}", "class": "GuzzleHttp\\Promise\\Promise", "type": "::", "args": [ "*** sensitive parameters replaced ***" ] }, { "file": "/var/www/html/3rdparty/guzzlehttp/promises/src/Promise.php", "line": 248, "function": "run", "class": "GuzzleHttp\\Promise\\TaskQueue", "type": "->" }, { "file": "/var/www/html/3rdparty/guzzlehttp/promises/src/Promise.php", "line": 224, "function": "invokeWaitFn", "class": "GuzzleHttp\\Promise\\Promise", "type": "->" }, { "file": "/var/www/html/3rdparty/guzzlehttp/promises/src/Promise.php", "line": 269, "function": "waitIfPending", "class": "GuzzleHttp\\Promise\\Promise", "type": "->" }, { "file": "/var/www/html/3rdparty/guzzlehttp/promises/src/Promise.php", "line": 226, "function": "invokeWaitList", "class": "GuzzleHttp\\Promise\\Promise", "type": "->" }, { "file": "/var/www/html/3rdparty/guzzlehttp/promises/src/Promise.php", "line": 62, "function": "waitIfPending", "class": "GuzzleHttp\\Promise\\Promise", "type": "->" }, { "file": "/var/www/html/3rdparty/guzzlehttp/guzzle/src/Client.php", "line": 187, "function": "wait", "class": "GuzzleHttp\\Promise\\Promise", "type": "->" }, { "file": "/var/www/html/lib/private/Http/Client/Client.php", "line": 297, "function": "request", "class": "GuzzleHttp\\Client", "type": "->" }, { "file": "/var/www/html/apps/federatedfilesharing/lib/Notifications.php", "line": 385, "function": "post", "class": "OC\\Http\\Client\\Client", "type": "->" }, { "file": "/var/www/html/apps/federatedfilesharing/lib/Notifications.php", "line": 359, "function": "tryLegacyEndPoint", "class": "OCA\\FederatedFileSharing\\Notifications", "type": "->" }, { "file": "/var/www/html/apps/federatedfilesharing/lib/Notifications.php", "line": 292, "function": "tryHttpPostToShareEndpoint", "class": "OCA\\FederatedFileSharing\\Notifications", "type": "->" }, { "file": "/var/www/html/apps/federatedfilesharing/lib/Notifications.php", "line": 222, "function": "sendUpdateToRemote", "class": "OCA\\FederatedFileSharing\\Notifications", "type": "->" }, { "file": "/var/www/html/apps/federatedfilesharing/lib/FederatedShareProvider.php", "line": 560, "function": "sendRemoteUnShare", "class": "OCA\\FederatedFileSharing\\Notifications", "type": "->" }, { "file": "/var/www/html/lib/private/Share20/Manager.php", "line": 1238, "function": "delete", "class": "OCA\\FederatedFileSharing\\FederatedShareProvider", "type": "->" }, { "file": "/var/www/html/apps/files_sharing/lib/Controller/ShareAPIController.php", "line": 444, "function": "deleteShare", "class": "OC\\Share20\\Manager", "type": "->" }, { "file": "/var/www/html/lib/private/AppFramework/Http/Dispatcher.php", "line": 230, "function": "deleteShare", "class": "OCA\\Files_Sharing\\Controller\\ShareAPIController", "type": "->" }, { "file": "/var/www/html/lib/private/AppFramework/Http/Dispatcher.php", "line": 137, "function": "executeController", "class": "OC\\AppFramework\\Http\\Dispatcher", "type": "->" }, { "file": "/var/www/html/lib/private/AppFramework/App.php", "line": 183, "function": "dispatch", "class": "OC\\AppFramework\\Http\\Dispatcher", "type": "->" }, { "file": "/var/www/html/lib/private/Route/Router.php", "line": 315, "function": "main", "class": "OC\\AppFramework\\App", "type": "::" }, { "file": "/var/www/html/ocs/v1.php", "line": 63, "function": "match", "class": "OC\\Route\\Router", "type": "->" }, { "file": "/var/www/html/ocs/v2.php", "line": 23, "args": [ "/var/www/html/ocs/v1.php" ], "function": "require_once" } ], "File": "/var/www/html/3rdparty/guzzlehttp/guzzle/src/Exception/RequestException.php", "Line": 113, "CustomMessage": "--" } }Reva on Nextcloud side log:
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