author | wenzelm |
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changeset 76116 | c4dc343fdbcb |
parent 76115 | f17393e21388 |
child 76117 | 531248fd8952 |
permissions | -rw-r--r-- |
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/* Title: Pure/General/ssh.scala |
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Author: Makarius |
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SSH client based on JSch (see also http://www.jcraft.com/jsch/examples). |
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*/ |
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package isabelle |
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import java.util.{Map => JMap} |
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import java.io.{InputStream, OutputStream, ByteArrayOutputStream} |
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import scala.collection.mutable |
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import scala.util.matching.Regex |
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import com.jcraft.jsch.{JSch, Logger => JSch_Logger, Session => JSch_Session, SftpException, |
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OpenSSHConfig, UserInfo, ChannelExec, ChannelSftp, SftpATTRS, JSchException} |
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object SSH { |
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/* target machine: user@host syntax */ |
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object Target { |
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val User_Host: Regex = "^([^@]+)@(.+)$".r |
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def parse(s: String): (String, String) = |
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s match { |
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case User_Host(user, host) => (user, host) |
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case _ => ("", s) |
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} |
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def unapplySeq(s: String): Option[List[String]] = |
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parse(s) match { |
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case (_, "") => None |
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case (user, host) => Some(List(user, host)) |
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} |
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} |
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val default_port = 22 |
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def make_port(port: Int): Int = if (port > 0) port else default_port |
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def port_suffix(port: Int): String = |
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if (port == default_port) "" else ":" + port |
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def user_prefix(user: String): String = |
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proper_string(user) match { |
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case None => "" |
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case Some(name) => name + "@" |
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} |
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def connect_timeout(options: Options): Int = |
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options.seconds("ssh_connect_timeout").ms.toInt |
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def alive_interval(options: Options): Int = |
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options.seconds("ssh_alive_interval").ms.toInt |
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def alive_count_max(options: Options): Int = |
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options.int("ssh_alive_count_max") |
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/* open session */ |
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private def connect_session( |
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options: Options, |
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jsch: JSch, |
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host: String, |
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user: String = "", |
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port: Int = 0, |
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permissive: Boolean = false, |
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nominal_host: String = "", |
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nominal_user: String = "", |
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nominal_port: Option[Int] = None, |
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on_close: () => Unit = () => () |
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): Session = { |
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val connect_port = make_port(port) |
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val session = jsch.getSession(proper_string(user).orNull, host, connect_port) |
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session.setUserInfo(No_User_Info) |
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session.setServerAliveInterval(alive_interval(options)) |
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session.setServerAliveCountMax(alive_count_max(options)) |
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session.setConfig("MaxAuthTries", "3") |
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if (permissive) session.setConfig("StrictHostKeyChecking", "no") |
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if (nominal_host != "") session.setHostKeyAlias(nominal_host) |
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if (options.bool("ssh_compression")) { |
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session.setConfig("compression.s2c", "zlib@openssh.com,zlib,none") |
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session.setConfig("compression.c2s", "zlib@openssh.com,zlib,none") |
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session.setConfig("compression_level", "9") |
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} |
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session.connect(connect_timeout(options)) |
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new Session(options, session, on_close, |
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proper_string(nominal_host) getOrElse host, |
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proper_string(nominal_user) getOrElse user, |
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nominal_port getOrElse connect_port) |
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} |
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def open_session( |
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options: Options, |
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host: String, |
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user: String = "", |
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port: Int = 0, |
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actual_host: String = "", |
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proxy_host: String = "", |
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proxy_user: String = "", |
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proxy_port: Int = 0, |
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permissive: Boolean = false |
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): Session = { |
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val config_dir = Path.explode(options.string("ssh_config_dir")) |
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if (!config_dir.is_dir) error("Bad ssh config directory: " + config_dir) |
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val jsch = new JSch |
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val config_file = Path.explode(options.string("ssh_config_file")) |
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if (config_file.is_file) |
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jsch.setConfigRepository(OpenSSHConfig.parseFile(File.platform_path(config_file))) |
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val known_hosts = config_dir + Path.explode("known_hosts") |
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if (!known_hosts.is_file) known_hosts.file.createNewFile |
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jsch.setKnownHosts(File.platform_path(known_hosts)) |
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val identity_files = |
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space_explode(':', options.string("ssh_identity_files")).map(Path.explode) |
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for (identity_file <- identity_files if identity_file.is_file) { |
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try { jsch.addIdentity(File.platform_path(identity_file)) } |
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catch { |
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case exn: JSchException => |
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error("Error in ssh identity file " + identity_file + ": " + exn.getMessage) |
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} |
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} |
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val connect_host = proper_string(actual_host) getOrElse host |
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val connect_port = make_port(port) |
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if (proxy_host == "") { |
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connect_session(options, jsch, host = connect_host, user = user, port = connect_port) |
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} |
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else { |
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val proxy = |
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connect_session(options, jsch, host = proxy_host, port = proxy_port, user = proxy_user) |
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val fw = |
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try { proxy.port_forwarding(remote_host = connect_host, remote_port = connect_port) } |
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catch { case exn: Throwable => proxy.close(); throw exn } |
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try { |
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connect_session(options, jsch, |
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host = fw.local_host, |
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port = fw.local_port, |
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permissive = permissive, |
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nominal_host = host, |
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nominal_port = Some(connect_port), |
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nominal_user = user, user = user, |
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on_close = { () => fw.close(); proxy.close() }) |
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} |
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catch { case exn: Throwable => fw.close(); proxy.close(); throw exn } |
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} |
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} |
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/* logging */ |
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def logging(verbose: Boolean = true, debug: Boolean = false): Unit = { |
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JSch.setLogger(if (verbose) new Logger(debug) else null) |
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} |
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private class Logger(debug: Boolean) extends JSch_Logger { |
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def isEnabled(level: Int): Boolean = level != JSch_Logger.DEBUG || debug |
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def log(level: Int, msg: String): Unit = { |
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level match { |
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case JSch_Logger.ERROR | JSch_Logger.FATAL => Output.error_message(msg) |
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case JSch_Logger.WARN => Output.warning(msg) |
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case _ => Output.writeln(msg) |
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} |
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} |
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} |
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/* user info */ |
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object No_User_Info extends UserInfo { |
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def getPassphrase: String = null |
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def getPassword: String = null |
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def promptPassword(msg: String): Boolean = false |
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def promptPassphrase(msg: String): Boolean = false |
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def promptYesNo(msg: String): Boolean = false |
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def showMessage(msg: String): Unit = Output.writeln(msg) |
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} |
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/* Sftp channel */ |
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type Attrs = SftpATTRS |
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sealed case class Dir_Entry(name: String, is_dir: Boolean) { |
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def is_file: Boolean = !is_dir |
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} |
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/* exec channel */ |
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private val exec_wait_delay = Time.seconds(0.3) |
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class Exec private[SSH](session: Session, channel: ChannelExec) extends AutoCloseable { |
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override def toString: String = "exec " + session.toString |
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def close(): Unit = channel.disconnect() |
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val exit_status: Future[Int] = |
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Future.thread("ssh_wait") { |
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while (!channel.isClosed) exec_wait_delay.sleep() |
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channel.getExitStatus |
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} |
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val stdin: OutputStream = channel.getOutputStream |
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val stdout: InputStream = channel.getInputStream |
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val stderr: InputStream = channel.getErrStream |
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// connect after preparing streams |
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channel.connect(connect_timeout(session.options)) |
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def result( |
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progress_stdout: String => Unit = (_: String) => (), |
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progress_stderr: String => Unit = (_: String) => (), |
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strict: Boolean = true |
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): Process_Result = { |
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stdin.close() |
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227 |
|
75393 | 228 |
def read_lines(stream: InputStream, progress: String => Unit): List[String] = { |
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229 |
val result = new mutable.ListBuffer[String] |
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230 |
val line_buffer = new ByteArrayOutputStream(100) |
75393 | 231 |
def line_flush(): Unit = { |
64326 | 232 |
val line = Library.trim_line(line_buffer.toString(UTF8.charset_name)) |
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233 |
progress(line) |
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234 |
result += line |
75548 | 235 |
line_buffer.reset() |
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236 |
} |
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237 |
|
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238 |
var c = 0 |
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239 |
var finished = false |
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240 |
while (!finished) { |
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241 |
while ({ c = stream.read; c != -1 && c != 10 }) line_buffer.write(c) |
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|
242 |
if (c == 10) line_flush() |
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243 |
else if (channel.isClosed) { |
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244 |
if (line_buffer.size > 0) line_flush() |
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245 |
finished = true |
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246 |
} |
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247 |
else exec_wait_delay.sleep() |
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|
248 |
} |
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|
249 |
|
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250 |
result.toList |
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|
251 |
} |
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|
252 |
|
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253 |
val out_lines = Future.thread("ssh_stdout") { read_lines(stdout, progress_stdout) } |
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254 |
val err_lines = Future.thread("ssh_stderr") { read_lines(stderr, progress_stderr) } |
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255 |
|
75393 | 256 |
def terminate(): Unit = { |
73367 | 257 |
close() |
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|
258 |
out_lines.join |
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|
259 |
err_lines.join |
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|
260 |
exit_status.join |
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|
261 |
} |
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|
262 |
|
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263 |
val rc = |
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|
264 |
try { exit_status.join } |
74306 | 265 |
catch { case Exn.Interrupt() => terminate(); Process_Result.RC.interrupt } |
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266 |
|
73367 | 267 |
close() |
74306 | 268 |
if (strict && rc == Process_Result.RC.interrupt) throw Exn.Interrupt() |
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|
269 |
|
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270 |
Process_Result(rc, out_lines.join, err_lines.join) |
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271 |
} |
64131 | 272 |
} |
273 |
||
274 |
||
64123 | 275 |
/* session */ |
276 |
||
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277 |
class Session private[SSH]( |
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278 |
val options: Options, |
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279 |
session: JSch_Session, |
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on_close: () => Unit, |
281 |
val nominal_host: String, |
|
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282 |
val nominal_user: String, |
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283 |
val nominal_port: Int |
75393 | 284 |
) extends System { |
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285 |
ssh => |
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286 |
|
64347 | 287 |
def host: String = if (session.getHost == null) "" else session.getHost |
71549 | 288 |
|
289 |
override def hg_url: String = |
|
290 |
"ssh://" + user_prefix(nominal_user) + nominal_host + "/" |
|
66570 | 291 |
|
75500 | 292 |
override def rsync_prefix: String = |
293 |
user_prefix(nominal_user) + nominal_host + ":" |
|
294 |
||
64123 | 295 |
override def toString: String = |
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|
296 |
user_prefix(session.getUserName) + host + port_suffix(session.getPort) + |
71549 | 297 |
(if (session.isConnected) "" else " (disconnected)") |
64123 | 298 |
|
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299 |
|
65009 | 300 |
/* port forwarding */ |
301 |
||
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|
302 |
def port_forwarding( |
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|
303 |
remote_port: Int, |
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|
304 |
remote_host: String = "localhost", |
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|
305 |
local_port: Int = 0, |
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|
306 |
local_host: String = "localhost", |
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|
307 |
ssh_close: Boolean = false |
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|
308 |
): Port_Forwarding = { |
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|
309 |
val local_port1 = session.setPortForwardingL(local_host, local_port, remote_host, remote_port) |
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310 |
new Port_Forwarding(local_host, local_port1, remote_host, remote_port) { |
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|
311 |
override def close(): Unit = { |
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|
312 |
session.delPortForwardingL(this.local_host, this.local_port) |
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|
313 |
if (ssh_close) ssh.close() |
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|
314 |
} |
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|
315 |
} |
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|
316 |
} |
65009 | 317 |
|
318 |
||
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319 |
/* sftp channel */ |
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|
320 |
|
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|
321 |
private val sftp: ChannelSftp = session.openChannel("sftp").asInstanceOf[ChannelSftp] |
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|
322 |
sftp.connect(connect_timeout(options)) |
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|
323 |
|
75548 | 324 |
override def close(): Unit = { sftp.disconnect(); session.disconnect(); on_close() } |
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|
325 |
|
75393 | 326 |
val settings: JMap[String, String] = { |
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|
327 |
val home = sftp.getHome |
73897 | 328 |
JMap.of("HOME", home, "USER_HOME", home) |
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|
329 |
} |
66570 | 330 |
override def expand_path(path: Path): Path = path.expand_env(settings) |
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|
331 |
def remote_path(path: Path): String = expand_path(path).implode |
67066 | 332 |
override def bash_path(path: Path): String = Bash.string(remote_path(path)) |
64123 | 333 |
|
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|
334 |
def chmod(permissions: Int, path: Path): Unit = sftp.chmod(permissions, remote_path(path)) |
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changeset
|
335 |
def mv(path1: Path, path2: Path): Unit = sftp.rename(remote_path(path1), remote_path(path2)) |
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|
336 |
def rm(path: Path): Unit = sftp.rm(remote_path(path)) |
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|
337 |
def mkdir(path: Path): Unit = sftp.mkdir(remote_path(path)) |
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|
338 |
def rmdir(path: Path): Unit = sftp.rmdir(remote_path(path)) |
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diff
changeset
|
339 |
|
69302 | 340 |
private def test_entry(path: Path, as_dir: Boolean): Boolean = |
341 |
try { |
|
342 |
val is_dir = sftp.stat(remote_path(path)).isDir |
|
343 |
if (as_dir) is_dir else !is_dir |
|
344 |
} |
|
345 |
catch { case _: SftpException => false } |
|
69300
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changeset
|
346 |
|
69302 | 347 |
override def is_dir(path: Path): Boolean = test_entry(path, true) |
348 |
override def is_file(path: Path): Boolean = test_entry(path, false) |
|
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changeset
|
349 |
|
69301 | 350 |
def is_link(path: Path): Boolean = |
351 |
try { sftp.lstat(remote_path(path)).isLink } |
|
352 |
catch { case _: SftpException => false } |
|
353 |
||
75393 | 354 |
override def make_directory(path: Path): Path = { |
64256
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diff
changeset
|
355 |
if (!is_dir(path)) { |
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changeset
|
356 |
execute( |
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parents:
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diff
changeset
|
357 |
"perl -e \"use File::Path make_path; make_path('" + remote_path(path) + "');\"") |
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changeset
|
358 |
if (!is_dir(path)) error("Failed to create directory: " + quote(remote_path(path))) |
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parents:
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diff
changeset
|
359 |
} |
72376 | 360 |
path |
361 |
} |
|
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changeset
|
362 |
|
75393 | 363 |
def read_dir(path: Path): List[Dir_Entry] = { |
69300
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parents:
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diff
changeset
|
364 |
if (!is_dir(path)) error("No such directory: " + path.toString) |
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|
365 |
|
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changeset
|
366 |
val dir_name = remote_path(path) |
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|
367 |
val dir = sftp.ls(dir_name) |
64256
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changeset
|
368 |
(for { |
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|
369 |
i <- (0 until dir.size).iterator |
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|
370 |
a = dir.get(i).asInstanceOf[AnyRef] |
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|
371 |
name = Untyped.get[String](a, "filename") |
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|
372 |
attrs = Untyped.get[Attrs](a, "attrs") |
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diff
changeset
|
373 |
if name != "." && name != ".." |
69302 | 374 |
} |
375 |
yield { |
|
376 |
Dir_Entry(name, |
|
377 |
if (attrs.isLink) { |
|
378 |
try { sftp.stat(dir_name + "/" + name).isDir } |
|
379 |
catch { case _: SftpException => false } |
|
380 |
} |
|
381 |
else attrs.isDir) |
|
69427
ff2f39a221d4
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diff
changeset
|
382 |
}).toList.sortBy(_.name) |
64191 | 383 |
} |
64135
865dda40e1cc
provide execute operation, similar to Isabelle_System.bash;
wenzelm
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diff
changeset
|
384 |
|
69301 | 385 |
def find_files( |
386 |
start: Path, |
|
387 |
pred: Path => Boolean = _ => true, |
|
388 |
include_dirs: Boolean = false, |
|
75393 | 389 |
follow_links: Boolean = false |
390 |
): List[Path] = { |
|
69301 | 391 |
val result = new mutable.ListBuffer[Path] |
73340 | 392 |
def check(path: Path): Unit = { if (pred(path)) result += path } |
69301 | 393 |
|
75393 | 394 |
def find(dir: Path): Unit = { |
69303 | 395 |
if (include_dirs) check(dir) |
69301 | 396 |
if (follow_links || !is_link(dir)) { |
397 |
for (entry <- read_dir(dir)) { |
|
69302 | 398 |
val path = dir + Path.basic(entry.name) |
399 |
if (entry.is_file) check(path) else find(path) |
|
69301 | 400 |
} |
401 |
} |
|
402 |
} |
|
403 |
if (is_file(start)) check(start) else find(start) |
|
404 |
||
405 |
result.toList |
|
64256
c3197aeae90b
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parents:
64254
diff
changeset
|
406 |
} |
c3197aeae90b
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wenzelm
parents:
64254
diff
changeset
|
407 |
|
c3197aeae90b
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parents:
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diff
changeset
|
408 |
def open_input(path: Path): InputStream = sftp.get(remote_path(path)) |
c3197aeae90b
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parents:
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diff
changeset
|
409 |
def open_output(path: Path): OutputStream = sftp.put(remote_path(path)) |
c3197aeae90b
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410 |
|
73634 | 411 |
override def read_file(path: Path, local_path: Path): Unit = |
64256
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simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
wenzelm
parents:
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diff
changeset
|
412 |
sftp.get(remote_path(path), File.platform_path(local_path)) |
75513 | 413 |
override def read_bytes(path: Path): Bytes = using(open_input(path))(Bytes.read_stream(_)) |
414 |
override def read(path: Path): String = using(open_input(path))(File.read_stream) |
|
64256
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simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
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parents:
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diff
changeset
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415 |
|
73634 | 416 |
override def write_file(path: Path, local_path: Path): Unit = |
64256
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simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
wenzelm
parents:
64254
diff
changeset
|
417 |
sftp.put(File.platform_path(local_path), remote_path(path)) |
c3197aeae90b
simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
wenzelm
parents:
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diff
changeset
|
418 |
def write_bytes(path: Path, bytes: Bytes): Unit = |
71601 | 419 |
using(open_output(path))(bytes.write_stream) |
64256
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simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
wenzelm
parents:
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diff
changeset
|
420 |
def write(path: Path, text: String): Unit = |
c3197aeae90b
simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
wenzelm
parents:
64254
diff
changeset
|
421 |
using(open_output(path))(stream => Bytes(text).write_stream(stream)) |
c3197aeae90b
simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
wenzelm
parents:
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diff
changeset
|
422 |
|
c3197aeae90b
simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
wenzelm
parents:
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diff
changeset
|
423 |
|
c3197aeae90b
simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
wenzelm
parents:
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diff
changeset
|
424 |
/* exec channel */ |
c3197aeae90b
simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
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parents:
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diff
changeset
|
425 |
|
75393 | 426 |
def exec(command: String): Exec = { |
64256
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simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
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parents:
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diff
changeset
|
427 |
val channel = session.openChannel("exec").asInstanceOf[ChannelExec] |
64190
c62b99e3ec07
provide USER_HOME, such that symbolic Path.explode("~") can be used remotely;
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parents:
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diff
changeset
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428 |
channel.setCommand("export USER_HOME=\"$HOME\"\n" + command) |
64256
c3197aeae90b
simplified SSH.Session: sftp channel is always open and its operations provided by the main interface;
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parents:
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diff
changeset
|
429 |
new Exec(this, channel) |
64129 | 430 |
} |
64123 | 431 |
|
66570 | 432 |
override def execute(command: String, |
64191 | 433 |
progress_stdout: String => Unit = (_: String) => (), |
434 |
progress_stderr: String => Unit = (_: String) => (), |
|
73634 | 435 |
settings: Boolean = true, |
64191 | 436 |
strict: Boolean = true): Process_Result = |
437 |
exec(command).result(progress_stdout, progress_stderr, strict) |
|
64137 | 438 |
|
72340 | 439 |
override def isabelle_platform: Isabelle_Platform = Isabelle_Platform(ssh = Some(this)) |
72338 | 440 |
|
64137 | 441 |
|
442 |
/* tmp dirs */ |
|
443 |
||
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tuned signature, in accordance to Isabelle_System;
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parents:
64304
diff
changeset
|
444 |
def rm_tree(dir: Path): Unit = rm_tree(remote_path(dir)) |
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parents:
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diff
changeset
|
445 |
|
64137 | 446 |
def rm_tree(remote_dir: String): Unit = |
64304 | 447 |
execute("rm -r -f " + Bash.string(remote_dir)).check |
64137 | 448 |
|
449 |
def tmp_dir(): String = |
|
450 |
execute("mktemp -d -t tmp.XXXXXXXXXX").check.out |
|
451 |
||
75393 | 452 |
override def with_tmp_dir[A](body: Path => A): A = { |
64137 | 453 |
val remote_dir = tmp_dir() |
64233 | 454 |
try { body(Path.explode(remote_dir)) } finally { rm_tree(remote_dir) } |
64137 | 455 |
} |
64123 | 456 |
} |
66570 | 457 |
|
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parents:
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diff
changeset
|
458 |
abstract class Port_Forwarding private[SSH]( |
c4dc343fdbcb
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changeset
|
459 |
val local_host: String, |
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|
460 |
val local_port: Int, |
c4dc343fdbcb
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parents:
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changeset
|
461 |
val remote_host: String, |
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parents:
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diff
changeset
|
462 |
val remote_port: Int |
c4dc343fdbcb
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changeset
|
463 |
) extends AutoCloseable { |
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|
464 |
override def toString: String = |
c4dc343fdbcb
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parents:
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diff
changeset
|
465 |
local_host + ":" + local_port + ":" + remote_host + ":" + remote_port |
c4dc343fdbcb
clarified signature: avoid exposure of JSch types;
wenzelm
parents:
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changeset
|
466 |
} |
c4dc343fdbcb
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wenzelm
parents:
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diff
changeset
|
467 |
|
66570 | 468 |
|
469 |
/* system operations */ |
|
470 |
||
75393 | 471 |
trait System extends AutoCloseable { |
73634 | 472 |
def close(): Unit = () |
473 |
||
66570 | 474 |
def hg_url: String = "" |
475 |
||
75500 | 476 |
def rsync_prefix: String = "" |
75517 | 477 |
def rsync_path(path: Path): String = rsync_prefix + expand_path(path).implode |
75500 | 478 |
|
66570 | 479 |
def expand_path(path: Path): Path = path.expand |
67066 | 480 |
def bash_path(path: Path): String = File.bash_path(path) |
69300
8b6ab9989bcd
is_file/is_dir/read_dir: more uniform treatment of errors and boundary cases, notably for symlinks in ssh;
wenzelm
parents:
67771
diff
changeset
|
481 |
def is_dir(path: Path): Boolean = path.is_dir |
66570 | 482 |
def is_file(path: Path): Boolean = path.is_file |
72376 | 483 |
def make_directory(path: Path): Path = Isabelle_System.make_directory(path) |
73634 | 484 |
def with_tmp_dir[A](body: Path => A): A = Isabelle_System.with_tmp_dir("tmp")(body) |
485 |
def read_file(path1: Path, path2: Path): Unit = Isabelle_System.copy_file(path1, path2) |
|
486 |
def write_file(path1: Path, path2: Path): Unit = Isabelle_System.copy_file(path2, path1) |
|
75513 | 487 |
def read_bytes(path: Path): Bytes = Bytes.read(path) |
488 |
def read(path: Path): String = File.read(path) |
|
66570 | 489 |
|
490 |
def execute(command: String, |
|
491 |
progress_stdout: String => Unit = (_: String) => (), |
|
492 |
progress_stderr: String => Unit = (_: String) => (), |
|
73634 | 493 |
settings: Boolean = true, |
66570 | 494 |
strict: Boolean = true): Process_Result = |
73634 | 495 |
Isabelle_System.bash(command, |
496 |
progress_stdout = progress_stdout, |
|
497 |
progress_stderr = progress_stderr, |
|
498 |
env = if (settings) Isabelle_System.settings() else null, |
|
499 |
strict = strict) |
|
72338 | 500 |
|
72340 | 501 |
def isabelle_platform: Isabelle_Platform = Isabelle_Platform() |
66570 | 502 |
} |
503 |
||
504 |
object Local extends System |
|
64123 | 505 |
} |