forked from External/grumble
48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
// Copyright (c) 2010-2013 The Grumble Authors
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// The use of this source code is goverened by a BSD-style
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// license that can be found in the LICENSE-file.
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package acl
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// Context represents a context in which ACLs can
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// be understood. Typically embedded into a type
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// that represents a Mumble channel.
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type Context struct {
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// Parent points to the context's parent.
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// May be nil if the Context does not have a parent.
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Parent *Context
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// ACLs is the Context's list of ACL entries.
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ACLs []ACL
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// Groups is the Context's representation of groups.
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// It is indexed by the Group's name.
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Groups map[string]Group
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// InheritACL determines whether this context should
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// inherit ACLs from its parent.
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InheritACL bool
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}
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// indexOf finds the index of the context ctx in the context chain contexts.
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// Returns -1 if the given context was not found in the context chain.
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func indexOf(contexts []*Context, ctx *Context) int {
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for i, iter := range contexts {
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if iter == ctx {
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return i
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}
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}
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return -1
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}
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// buildChain walks from the context ctx back through all of its parents,
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// collecting them all in a slice. The first element of the returned
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// slice is the final ancestor (it has a nil Parent).
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func buildChain(ctx *Context) []*Context {
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chain := []*Context{}
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for ctx != nil {
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chain = append([]*Context{ctx}, chain...)
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ctx = ctx.Parent
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}
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return chain
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}
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