mirror of
https://github.com/matrix-org/dendrite.git
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56 lines
1.6 KiB
Go
56 lines
1.6 KiB
Go
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package auth
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import (
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"fmt"
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"net/http"
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"strings"
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"github.com/matrix-org/dendrite/clientapi/jsonerror"
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"github.com/matrix-org/util"
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)
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// VerifyAccessToken verifies that an access token was supplied in the given HTTP request
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// and returns the user ID it corresponds to. Returns resErr (an error response which can be
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// sent to the client) if the token is invalid or there was a problem querying the database.
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func VerifyAccessToken(req *http.Request) (userID string, resErr *util.JSONResponse) {
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token, tokenErr := extractAccessToken(req)
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if tokenErr != nil {
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resErr = &util.JSONResponse{
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Code: 401,
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JSON: jsonerror.MissingToken(tokenErr.Error()),
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}
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return
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}
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if token == "fail" {
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res := util.ErrorResponse(fmt.Errorf("Fatal error"))
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resErr = &res
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}
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// TODO: Check the token against the database
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return
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}
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// extractAccessToken from a request, or return an error detailing what went wrong. The
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// error message MUST be human-readable and comprehensible to the client.
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func extractAccessToken(req *http.Request) (string, error) {
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// cf https://github.com/matrix-org/synapse/blob/v0.19.2/synapse/api/auth.py#L631
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authBearer := req.Header.Get("Authorization")
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queryToken := req.URL.Query().Get("access_token")
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if authBearer != "" && queryToken != "" {
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return "", fmt.Errorf("mixing Authorization headers and access_token query parameters")
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}
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if queryToken != "" {
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return queryToken, nil
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}
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if authBearer != "" {
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parts := strings.SplitN(authBearer, " ", 2)
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if len(parts) != 2 || parts[0] != "Bearer" {
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return "", fmt.Errorf("invalid Authorization header")
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}
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return parts[1], nil
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}
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return "", fmt.Errorf("missing access token")
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}
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