Add dispatcher event for audit log

[sharidas]

Adding a dispatcher event to log unshare
event done by the recipient.

Signed-off-by: Sujith H sharidasan@owncloud.com

Description

This change helps to dispatch the unshare event triggered by recipient user.

Related Issue

Motivation and Context

This helps to trigger unshare event triggered by recipient user.

How Has This Been Tested?

• Create two users admin and user1
• Create folder test and file sampletext.txt under user admin
• Share test and sampletext.txt to user user1
• As user1 unshare test folder and file sampletext.txt
  Below are the logs obtained:

{"reqId":"1DRPazRmtEL4aBXXeJU3","level":1,"time":"2017-08-08T06:37:08+00:00","remoteAddr":"127.0.0.1","user":"user1","app":"admin_audit","method":"DELETE","url":"\/testing\/remote.php\/dav\/files\/user1\/test","message":"user <user1>, displayName <user1> unshared folder \/test from user admin, owner path: \/admin\/files\/test [CLIENT_IP: 127.0.0.1] [USER_AGENT: Mozilla\/5.0 (X11; Linux x86_64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/60.0.3112.90 Safari\/537.36]"}

{"reqId":"PIShxuF0agZxrQIRFzwv","level":1,"time":"2017-08-08T06:37:10+00:00","remoteAddr":"127.0.0.1","user":"user1","app":"admin_audit","method":"DELETE","url":"\/testing\/remote.php\/dav\/files\/user1\/sampletest.txt","message":"user <user1>, displayName <user1> unshared file \/sampletest.txt from user admin, owner path: \/admin\/files\/sampletest.txt [CLIENT_IP: 127.0.0.1] [USER_AGENT: Mozilla\/5.0 (X11; Linux x86_64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/60.0.3112.90 Safari\/537.36]"}

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[sharidas]

grep-ing through the source, I couldn't find connect for post_unshareFromSelf being used. One more reference is found in the core https://github.com/owncloud/core/blob/master/lib/private/Share/Share.php#L1101 .

[PVince81]

This is because it was missing and just got added recently in #28401

[PVince81]

Looks good 👍

[sharidas]

Backport stable10: #29851

[lock]

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