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57 lines
2.1 KiB
Go
57 lines
2.1 KiB
Go
package openid
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// 7.3.1. Discovered Information
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// Upon successful completion of discovery, the Relying Party will
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// have one or more sets of the following information (see the
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// Terminology section for definitions). If more than one set of the
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// following information has been discovered, the precedence rules
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// defined in [XRI_Resolution_2.0] are to be applied.
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// - OP Endpoint URL
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// - Protocol Version
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// If the end user did not enter an OP Identifier, the following
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// information will also be present:
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// - Claimed Identifier
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// - OP-Local Identifier
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// If the end user entered an OP Identifier, there is no Claimed
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// Identifier. For the purposes of making OpenID Authentication
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// requests, the value
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// "http://specs.openid.net/auth/2.0/identifier_select" MUST be
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// used as both the Claimed Identifier and the OP-Local Identifier
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// when an OP Identifier is entered.
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func Discover(id string) (opEndpoint, opLocalID, claimedID string, err error) {
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return defaultInstance.Discover(id)
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}
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func (oid *OpenID) Discover(id string) (opEndpoint, opLocalID, claimedID string, err error) {
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// From OpenID specs, 7.2: Normalization
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if id, err = Normalize(id); err != nil {
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return
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}
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// From OpenID specs, 7.3: Discovery.
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// If the identifier is an XRI, [XRI_Resolution_2.0] will yield an
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// XRDS document that contains the necessary information. It
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// should also be noted that Relying Parties can take advantage of
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// XRI Proxy Resolvers, such as the one provided by XDI.org at
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// http://www.xri.net. This will remove the need for the RPs to
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// perform XRI Resolution locally.
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// XRI not supported.
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// If it is a URL, the Yadis protocol [Yadis] SHALL be first
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// attempted. If it succeeds, the result is again an XRDS
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// document.
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if opEndpoint, opLocalID, err = yadisDiscovery(id, oid.urlGetter); err != nil {
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// If the Yadis protocol fails and no valid XRDS document is
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// retrieved, or no Service Elements are found in the XRDS
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// document, the URL is retrieved and HTML-Based discovery SHALL be
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// attempted.
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opEndpoint, opLocalID, claimedID, err = htmlDiscovery(id, oid.urlGetter)
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}
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if err != nil {
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return "", "", "", err
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}
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return
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}
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