prysm-pulse/beacon-chain/powchain/provider.go

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package powchain
import (
"encoding/base64"
"strings"
"github.com/prysmaticlabs/prysm/network"
"github.com/prysmaticlabs/prysm/network/authorization"
)
// HttpEndpoint extracts an httputils.Endpoint from the provider parameter.
func HttpEndpoint(eth1Provider string) network.Endpoint {
endpoint := network.Endpoint{
Url: "",
Auth: network.AuthorizationData{
Method: authorization.None,
Value: "",
}}
authValues := strings.Split(eth1Provider, ",")
endpoint.Url = strings.TrimSpace(authValues[0])
if len(authValues) > 2 {
log.Errorf(
"ETH1 endpoint string can contain one comma for specifying the authorization header to access the provider."+
" String contains too many commas: %d. Skipping authorization.", len(authValues)-1)
} else if len(authValues) == 2 {
switch network.Method(strings.TrimSpace(authValues[1])) {
case authorization.Basic:
basicAuthValues := strings.Split(strings.TrimSpace(authValues[1]), " ")
if len(basicAuthValues) != 2 {
log.Errorf("Basic Authentication has incorrect format. Skipping authorization.")
} else {
endpoint.Auth.Method = authorization.Basic
endpoint.Auth.Value = base64.StdEncoding.EncodeToString([]byte(basicAuthValues[1]))
}
case authorization.Bearer:
bearerAuthValues := strings.Split(strings.TrimSpace(authValues[1]), " ")
if len(bearerAuthValues) != 2 {
log.Errorf("Bearer Authentication has incorrect format. Skipping authorization.")
} else {
endpoint.Auth.Method = authorization.Bearer
endpoint.Auth.Value = bearerAuthValues[1]
}
case authorization.None:
log.Errorf("Authorization has incorrect format or authorization type is not supported.")
}
}
return endpoint
}