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package client
import (
"os"
"github.com/mimecast/dtail/internal/config"
"github.com/mimecast/dtail/internal/io/logger"
"github.com/mimecast/dtail/internal/ssh"
gossh "golang.org/x/crypto/ssh"
)
// InitSSHAuthMethods initialises all known SSH auth methods on the client side.
func InitSSHAuthMethods(sshAuthMethods []gossh.AuthMethod, hostKeyCallback gossh.HostKeyCallback, trustAllHosts bool, throttleCh chan struct{}) ([]gossh.AuthMethod, HostKeyCallback) {
if len(sshAuthMethods) > 0 {
simpleCallback, err := NewSimpleCallback()
if err != nil {
logger.FatalExit(err)
}
return sshAuthMethods, simpleCallback
}
return initKnownHostsAuthMethods(trustAllHosts, throttleCh)
}
func initKnownHostsAuthMethods(trustAllHosts bool, throttleCh chan struct{}) ([]gossh.AuthMethod, HostKeyCallback) {
var sshAuthMethods []gossh.AuthMethod
if config.Common.ExperimentalFeaturesEnable {
sshAuthMethods = append(sshAuthMethods, gossh.Password("experimental feature test"))
logger.Debug("Added experimental method to list of auth methods")
}
keyPath := os.Getenv("HOME") + "/.ssh/id_rsa"
if authMethod, err := ssh.PrivateKey(keyPath); err == nil {
sshAuthMethods = append(sshAuthMethods, authMethod)
logger.Debug("Added path to list of auth methods", keyPath)
}
keyPath = os.Getenv("HOME") + "/.ssh/id_dsa"
if authMethod, err := ssh.PrivateKey(keyPath); err == nil {
sshAuthMethods = append(sshAuthMethods, authMethod)
logger.Debug("Added path to list of auth methods", keyPath)
}
if authMethod, err := ssh.Agent(); err == nil {
sshAuthMethods = append(sshAuthMethods, authMethod)
logger.Debug("Added SSH Agent to list of auth methods")
}
knownHostsPath := os.Getenv("HOME") + "/.ssh/known_hosts"
knownHostsCallback, err := NewKnownHostsCallback(knownHostsPath, trustAllHosts, throttleCh)
if err != nil {
logger.FatalExit(knownHostsPath, err)
}
logger.Debug("Added known hosts file path", knownHostsPath)
return sshAuthMethods, knownHostsCallback
}
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