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module Gitlab
module Checks
class ChangeAccess
# protocol is currently used only in EE
attr_reader :user_access, :project, :skip_authorization, :protocol
def initialize(
change, user_access:, project:, env: {}, skip_authorization: false,
protocol:
)
@oldrev, @newrev, @ref = change.values_at(:oldrev, :newrev, :ref)
@branch_name = Gitlab::Git.branch_name(@ref)
@user_access = user_access
@project = project
@env = env
@skip_authorization = skip_authorization
@protocol = protocol
end
def exec
error = push_checks || tag_checks || protected_branch_checks
if error
GitAccessStatus.new(false, error)
else
GitAccessStatus.new(true)
end
end
protected
def protected_branch_checks
return if skip_authorization
return unless @branch_name
return unless project.protected_branch?(@branch_name)
if forced_push?
return "You are not allowed to force push code to a protected branch on this project."
elsif Gitlab::Git.blank_ref?(@newrev)
return "You are not allowed to delete protected branches from this project."
end
if matching_merge_request?
if user_access.can_merge_to_branch?(@branch_name) || user_access.can_push_to_branch?(@branch_name)
return
else
"You are not allowed to merge code into protected branches on this project."
end
else
if user_access.can_push_to_branch?(@branch_name)
return
else
"You are not allowed to push code to protected branches on this project."
end
end
end
def tag_checks
return if skip_authorization
tag_ref = Gitlab::Git.tag_name(@ref)
if tag_ref && protected_tag?(tag_ref) && user_access.cannot_do_action?(:admin_project)
"You are not allowed to change existing tags on this project."
end
end
def push_checks
return if skip_authorization
if user_access.cannot_do_action?(:push_code)
"You are not allowed to push code to this project."
end
end
private
def protected_tag?(tag_name)
project.repository.tag_exists?(tag_name)
end
def forced_push?
Gitlab::Checks::ForcePush.force_push?(@project, @oldrev, @newrev, env: @env)
end
def matching_merge_request?
Checks::MatchingMergeRequest.new(@newrev, @branch_name, @project).match?
end
end
end
end
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