gitazure-devopspermissionsbranchazure-devops-rest-api

how to know if I can contribute to a branch with Azure rest Api?


with Azure Devops REST API, I would like to know if I have the permission to contribute to a specific branch, I found the request to know if I have a permission but it only work on a repos, but not on a branch...

If its not possible to get a permission for a specific branch, I would like to get the role of the user, for exemple I could make a role with the permission I want, and ask if the user has this role.

I tried this :

GET https://dev.azure.com/{organization}/_apis/permissions/2e9eb7ed-3c0a-47d4-87c1-0ffdd275fd87/4?tokens=repoV2/{idProject}/{idRepos}/refs/heads/{Branch}&api-version=7.0

2e9eb7ed-3c0a-47d4-87c1-0ffdd275fd87/4 is the permission "contribute", this requests works but it ignores the refs/heads/Branch part, without this part the request returns the same : the repos permission and not the branch permissions. But we can manage branch permissions with Azure Devops.

Maybe the token is wrong written, but I didnt found any example of what it has to look like in the Microsoft documentation.


Solution

  • Actually you are checking in correct way, the rest api works on my side:

    https://dev.azure.com/{organization}/_apis/permissions/2e9eb7ed-3c0a-47d4-87c1-0ffdd275fd87/4?tokens=repoV2/{idProject}/{idRepos}/refs/heads/{Branch}&api-version=7.0
    

    Please double check the token format repoV2/{idProject}/{idRepos}/refs/heads/{Branch}, for the {branch} name, please don't use real branch name like main, test, but should be id.

    You can get the token from rest api Access Control Lists - Query, notice branch id:

    https://dev.azure.com/{org}/_apis/accesscontrollists/2e9eb7ed-3c0a-47d4-87c1-0ffdd275fd87?api-version=7.1-preview.1
    

    enter image description here

    Actually, you can find the deny:4 for the target user which means it doesn't have contribute permission on the branch.

    Also in permission rest api above(id for branch name), it also returns false correctly.

    enter image description here