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83 lines
3.1 KiB
83 lines
3.1 KiB
package mssql
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import (
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"context"
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"errors"
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)
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// Federated authentication library affects the login data structure and message sequence.
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const (
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// fedAuthLibraryLiveIDCompactToken specifies the Microsoft Live ID Compact Token authentication scheme
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fedAuthLibraryLiveIDCompactToken = 0x00
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// fedAuthLibrarySecurityToken specifies a token-based authentication where the token is available
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// without additional information provided during the login sequence.
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fedAuthLibrarySecurityToken = 0x01
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// fedAuthLibraryADAL specifies a token-based authentication where a token is obtained during the
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// login sequence using the server SPN and STS URL provided by the server during login.
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fedAuthLibraryADAL = 0x02
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// fedAuthLibraryReserved is used to indicate that no federated authentication scheme applies.
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fedAuthLibraryReserved = 0x7F
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)
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// Federated authentication ADAL workflow affects the mechanism used to authenticate.
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const (
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// fedAuthADALWorkflowPassword uses a username/password to obtain a token from Active Directory
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fedAuthADALWorkflowPassword = 0x01
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// fedAuthADALWorkflowPassword uses the Windows identity to obtain a token from Active Directory
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fedAuthADALWorkflowIntegrated = 0x02
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// fedAuthADALWorkflowMSI uses the managed identity service to obtain a token
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fedAuthADALWorkflowMSI = 0x03
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)
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// newSecurityTokenConnector creates a new connector from a DSN and a token provider.
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// When invoked, token provider implementations should contact the security token
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// service specified and obtain the appropriate token, or return an error
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// to indicate why a token is not available.
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// The returned connector may be used with sql.OpenDB.
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func newSecurityTokenConnector(dsn string, tokenProvider func(ctx context.Context) (string, error)) (*Connector, error) {
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if tokenProvider == nil {
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return nil, errors.New("mssql: tokenProvider cannot be nil")
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}
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conn, err := NewConnector(dsn)
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if err != nil {
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return nil, err
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}
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conn.params.fedAuthLibrary = fedAuthLibrarySecurityToken
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conn.securityTokenProvider = tokenProvider
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return conn, nil
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}
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// newADALTokenConnector creates a new connector from a DSN and a Active Directory token provider.
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// Token provider implementations are called during federated
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// authentication login sequences where the server provides a service
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// principal name and security token service endpoint that should be used
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// to obtain the token. Implementations should contact the security token
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// service specified and obtain the appropriate token, or return an error
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// to indicate why a token is not available.
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//
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// The returned connector may be used with sql.OpenDB.
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func newActiveDirectoryTokenConnector(dsn string, adalWorkflow byte, tokenProvider func(ctx context.Context, serverSPN, stsURL string) (string, error)) (*Connector, error) {
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if tokenProvider == nil {
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return nil, errors.New("mssql: tokenProvider cannot be nil")
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}
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conn, err := NewConnector(dsn)
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if err != nil {
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return nil, err
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}
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conn.params.fedAuthLibrary = fedAuthLibraryADAL
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conn.params.fedAuthADALWorkflow = adalWorkflow
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conn.adalTokenProvider = tokenProvider
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return conn, nil
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}
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