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|
package control
import (
"strings"
"github.com/cretz/bine/torutil"
)
// ProtocolInfo is the protocol info result of Conn.ProtocolInfo.
type ProtocolInfo struct {
AuthMethods []string
CookieFile string
TorVersion string
RawResponse *Response
}
// HasAuthMethod checks if ProtocolInfo contains the requested auth method.
func (p *ProtocolInfo) HasAuthMethod(authMethod string) bool {
for _, m := range p.AuthMethods {
if m == authMethod {
return true
}
}
return false
}
// ProtocolInfo invokes PROTOCOLINFO on first invocation and returns a cached
// result on all others.
func (c *Conn) ProtocolInfo() (*ProtocolInfo, error) {
var err error
if c.protocolInfo == nil {
c.protocolInfo, err = c.sendProtocolInfo()
}
return c.protocolInfo, err
}
func (c *Conn) sendProtocolInfo() (*ProtocolInfo, error) {
resp, err := c.SendRequest("PROTOCOLINFO")
if err != nil {
return nil, err
}
// Check data vals
ret := &ProtocolInfo{RawResponse: resp}
for _, piece := range resp.Data {
key, val, ok := torutil.PartitionString(piece, ' ')
if !ok {
continue
}
switch key {
case "PROTOCOLINFO":
if val != "1" {
return nil, c.protoErr("Invalid PIVERSION: %v", val)
}
case "AUTH":
methods, cookieFile, _ := torutil.PartitionString(val, ' ')
if !strings.HasPrefix(methods, "METHODS=") {
continue
}
if cookieFile != "" {
if !strings.HasPrefix(cookieFile, "COOKIEFILE=") {
continue
}
if ret.CookieFile, err = torutil.UnescapeSimpleQuotedString(cookieFile[11:]); err != nil {
continue
}
}
ret.AuthMethods = strings.Split(methods[8:], ",")
case "VERSION":
torVersion, _, _ := torutil.PartitionString(val, ' ')
if strings.HasPrefix(torVersion, "Tor=") {
ret.TorVersion, err = torutil.UnescapeSimpleQuotedString(torVersion[4:])
}
}
}
return ret, nil
}
|
