50 lines
1.6 KiB
Go
50 lines
1.6 KiB
Go
package trustgraph
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import "github.com/docker/libtrust"
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// TrustGraph represents a graph of authorization mapping
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// public keys to nodes and grants between nodes.
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type TrustGraph interface {
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// Verifies that the given public key is allowed to perform
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// the given action on the given node according to the trust
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// graph.
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Verify(libtrust.PublicKey, string, uint16) (bool, error)
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// GetGrants returns an array of all grant chains which are used to
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// allow the requested permission.
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GetGrants(libtrust.PublicKey, string, uint16) ([][]*Grant, error)
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}
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// Grant represents a transfer of permission from one part of the
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// trust graph to another. This is the only way to delegate
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// permission between two different sub trees in the graph.
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type Grant struct {
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// Subject is the namespace being granted
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Subject string
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// Permissions is a bit map of permissions
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Permission uint16
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// Grantee represents the node being granted
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// a permission scope. The grantee can be
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// either a namespace item or a key id where namespace
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// items will always start with a '/'.
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Grantee string
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// statement represents the statement used to create
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// this object.
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statement *Statement
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}
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// Permissions
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// Read node 0x01 (can read node, no sub nodes)
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// Write node 0x02 (can write to node object, cannot create subnodes)
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// Read subtree 0x04 (delegates read to each sub node)
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// Write subtree 0x08 (delegates write to each sub node, included create on the subject)
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//
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// Permission shortcuts
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// ReadItem = 0x01
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// WriteItem = 0x03
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// ReadAccess = 0x07
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// WriteAccess = 0x0F
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// Delegate = 0x0F
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