Add script for running integration tests

This makes it possible to run the integration tests without
requiring that the user change their local ssh configuration.
This is desirable because some sites have strict controls over
the local ssh configuration files.

This commit adds a script that spawns a local copy of the ssh
daemon running on an alternate port with a specific configuration
that is known to successfully pass the test suite.

This has only been tested on my local macos machine so far.

3 files changed, 73 insertions, 4 deletions

diff --git a/tests/all/main.rs b/tests/all/main.rs
index 6f4335d..75f2a29 100644
--- a/tests/all/main.rs
+++ b/tests/all/main.rs
@@ -13,7 +13,10 @@ mod session;
 mod sftp;
 
 pub fn socket() -> TcpStream {
-    TcpStream::connect("127.0.0.1:22").unwrap()
+    let port = env::var("RUST_SSH2_FIXTURE_PORT")
+        .map(|s| s.parse().unwrap())
+        .unwrap_or(22);
+    TcpStream::connect(&format!("127.0.0.1:{}", port)).unwrap()
 }
 
 pub fn authed_session() -> ssh2::Session {
diff --git a/tests/all/session.rs b/tests/all/session.rs
index 77fb824..2c636a2 100644
--- a/tests/all/session.rs
+++ b/tests/all/session.rs
@@ -1,7 +1,7 @@
 use std::env;
 use std::fs::File;
 use std::io::prelude::*;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 use tempdir::TempDir;
 
 use ssh2::{HashType, MethodType, Session};
@@ -57,10 +57,14 @@ fn keepalive() {
 #[test]
 fn scp_recv() {
     let sess = ::authed_session();
-    let (mut ch, _) = sess.scp_recv(Path::new(".ssh/authorized_keys")).unwrap();
+
+    // Download our own source file; it's the only path that
+    // we know for sure exists on this system.
+    let p = Path::new(file!()).canonicalize().unwrap();
+
+    let (mut ch, _) = sess.scp_recv(&p).unwrap();
     let mut data = String::new();
     ch.read_to_string(&mut data).unwrap();
-    let p = PathBuf::from(env::var("HOME").unwrap()).join(".ssh/authorized_keys");
     let mut expected = String::new();
     File::open(&p)
         .unwrap()
diff --git a/tests/run_integration_tests.sh b/tests/run_integration_tests.sh
new file mode 100755
index 0000000..784a734
--- /dev/null
+++ b/tests/run_integration_tests.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+set -e
+set -x
+
+# This script spawns an ssh daemon with a known configuration so that we can
+# test various functionality against it.
+
+# Tell the tests to use the port number we're using to spawn this server
+export RUST_SSH2_FIXTURE_PORT=8022
+
+cleanup() {
+  # Stop the ssh server
+  kill $(< $SSHDIR/sshd.pid)
+  # Stop local ssh agent
+  kill $SSH_AGENT_PID
+}
+trap cleanup EXIT
+
+# Blow away any prior state and re-configure our test server
+SSHDIR=$(pwd)/tests/sshd
+
+rm -rf $SSHDIR
+mkdir -p $SSHDIR
+
+eval $(ssh-agent -s)
+
+ssh-keygen -t rsa -f $SSHDIR/id_rsa -N "" -q
+chmod 0600 $SSHDIR/id_rsa*
+ssh-add $SSHDIR/id_rsa
+cp $SSHDIR/id_rsa.pub $SSHDIR/authorized_keys
+
+ssh-keygen -f $SSHDIR/ssh_host_rsa_key -N '' -t rsa
+
+for p in /usr/lib/openssh/sftp-server /usr/libexec/sftp-server ; do
+  if test -x $p ; then
+    SFTP=$p
+  fi
+done
+
+cat > $SSHDIR/sshd_config <<-EOT
+AuthorizedKeysFile=$SSHDIR/authorized_keys
+HostKey=$SSHDIR/ssh_host_rsa_key
+PidFile=$SSHDIR/sshd.pid
+Subsystem sftp $SFTP
+UsePAM yes
+X11Forwarding yes
+PrintMotd yes
+PermitTunnel yes
+AllowTcpForwarding yes
+MaxStartups 500
+# Relax modes when the repo is under eg: /var/tmp
+StrictModes no
+EOT
+
+# Start an ssh server
+/usr/sbin/sshd -p $RUST_SSH2_FIXTURE_PORT -f $SSHDIR/sshd_config -E $SSHDIR/sshd.log
+# Give it a moment to start up
+sleep 2
+
+# Run the tests against it
+cargo test --all
+cargo test --features vendored-openssl