[dts] [PATCH 3/6] framework: Add login password support

[Michael Qiu <michael.qiu@intel.com>]

DTS login dut and tester machine via ssh service while
public and private keys are needed.

That means it can't use the user:password to login, which
should not always be a good idea.

Add login with password for another choice.

Signed-off-by: Michael Qiu <michael.qiu@intel.com>
---
 framework/crbs.py           |  1 +
 framework/dut.py            | 12 ++++++++++--
 framework/etgen.py          |  7 ++++++-
 framework/ssh_connection.py |  4 ++--
 framework/ssh_pexpect.py    | 23 ++++++++++++-----------
 framework/tester.py         | 12 ++++++++++--
 6 files changed, 41 insertions(+), 18 deletions(-)

diff --git a/framework/crbs.py b/framework/crbs.py
index 77446c3..6aa5435 100644
--- a/framework/crbs.py
+++ b/framework/crbs.py
@@ -10,6 +10,7 @@ crbs = [
      'user': '',
      'pass': '',
      'tester IP': '',
+     'tester pass': '',
      IXIA: None,
      'memory channels': 4,
      'bypass core0': True},
diff --git a/framework/dut.py b/framework/dut.py
index 4def144..d7099ef 100644
--- a/framework/dut.py
+++ b/framework/dut.py
@@ -59,9 +59,11 @@ class Dut(Crb):
         super(Dut, self).__init__(crb, serializer)
         self.NAME = 'dut'
         self.logger = getLogger(self.NAME)
-        self.session = SSHConnection(self.get_ip_address(), self.NAME)
+        self.session = SSHConnection(self.get_ip_address(), self.NAME,
+                                     self.get_password())
         self.session.init_log(self.logger)
-        self.alt_session = SSHConnection(self.get_ip_address(), self.NAME)
+        self.alt_session = SSHConnection(self.get_ip_address(), self.NAME,
+                                         self.get_password())
         self.alt_session.init_log(self.logger)
         self.number_of_cores = 0
         self.tester = None
@@ -120,6 +122,12 @@ class Dut(Crb):
         """
         return self.crb['IP']
 
+    def get_password(self):
+        """
+        Get DUT's login password.
+        """
+        return self.crb['pass']
+
     def dut_prerequisites(self):
         """
         Prerequest function should be called before execute any test case.
diff --git a/framework/etgen.py b/framework/etgen.py
index fe7100c..2f2e975 100644
--- a/framework/etgen.py
+++ b/framework/etgen.py
@@ -137,7 +137,9 @@ class IxiaPacketGenerator(SSHConnection):
         self.tester = tester
         self.NAME = 'ixia'
         self.logger = getLogger(self.NAME)
-        super(IxiaPacketGenerator, self).__init__(self.get_ip_address(), self.NAME)
+        super(IxiaPacketGenerator, self).__init__(self.get_ip_address(),
+                                                  self.NAME,
+                                                  self.get_password())
         super(IxiaPacketGenerator, self).init_log(self.logger)
 
         self.tcl_cmds = []
@@ -170,6 +172,9 @@ class IxiaPacketGenerator(SSHConnection):
     def get_ip_address(self):
         return self.tester.get_ip_address()
 
+    def get_password(self):
+        return self.tester.get_password()
+
     def add_tcl_cmd(self, cmd):
         """
         Add one tcl command into command list.
diff --git a/framework/ssh_connection.py b/framework/ssh_connection.py
index be1fb76..4306162 100644
--- a/framework/ssh_connection.py
+++ b/framework/ssh_connection.py
@@ -40,8 +40,8 @@ class SSHConnection(object):
     Implement send_expect/copy function upper SSHPexpet module.
     """
 
-    def __init__(self, host, session_name):
-        self.session = SSHPexpect(host, USERNAME)
+    def __init__(self, host, session_name, password = ''):
+        self.session = SSHPexpect(host, USERNAME, password)
         self.name = session_name
 
     def init_log(self, logger):
diff --git a/framework/ssh_pexpect.py b/framework/ssh_pexpect.py
index 8fb441b..9c353e7 100644
--- a/framework/ssh_pexpect.py
+++ b/framework/ssh_pexpect.py
@@ -12,12 +12,14 @@ Aslo support transfer files to tester or DUT.
 
 class SSHPexpect(object):
 
-    def __init__(self, host, username):
+    def __init__(self, host, username, password):
         try:
             self.session = pxssh.pxssh()
             self.username = username
             self.host = host
-            self.session.login(self.host, self.username)
+            self.password = password
+            self.session.login(self.host, self.username,
+                               self.password, original_prompt='[$#>]')
             self.send_expect('stty -echo', '# ', timeout=2)
         except Exception:
             raise SSHConnectionException(host)
@@ -69,21 +71,20 @@ class SSHPexpect(object):
         Copies a file from a remote place into local.
         """
         command = 'scp {0}@{1}:{2} .'.format(self.username, self.host, filename)
-        self._spawn_scp(command, password)
+        if password == '':
+            self._spawn_scp(command, self.password)
+        else:
+            self._spawn_scp(command, password)
 
     def copy_file_to(self, filename, password=''):
         """
         Sends a local file to a remote place.
         """
         command = 'scp {0} {1}@{2}:'.format(filename, self.username, self.host)
-        self._spawn_scp(command, password)
-
-    def copy_file_from(self, filename, password=''):
-        """
-        copy a remote file to a local place.
-        """
-        command = 'scp {1}@{2}:{0} .'.format(filename, self.username, self.host)
-        self._spawn_scp(command, password)
+        if password == '':
+            self._spawn_scp(command, self.password)
+        else:
+            self._spawn_scp(command, password)
 
     def _spawn_scp(self, scp_cmd, password):
         """
diff --git a/framework/tester.py b/framework/tester.py
index d69503a..0ebe29a 100644
--- a/framework/tester.py
+++ b/framework/tester.py
@@ -61,9 +61,11 @@ class Tester(Crb):
         self.NAME = 'tester'
 
         self.logger = getLogger(self.NAME)
-        self.session = SSHConnection(self.get_ip_address(), self.NAME)
+        self.session = SSHConnection(self.get_ip_address(),
+                                     self.NAME, self.get_password())
         self.session.init_log(self.logger)
-        self.alt_session = SSHConnection(self.get_ip_address(), self.NAME)
+        self.alt_session = SSHConnection(self.get_ip_address(),
+                                         self.NAME, self.get_password())
         self.alt_session.init_log(self.logger)
 
         self.ports_map = []
@@ -88,6 +90,12 @@ class Tester(Crb):
         """
         return self.crb['tester IP']
 
+    def get_password(self):
+        """
+        Get tester login password of tester CRB.
+        """
+        return self.crb['tester pass']
+
     def has_external_traffic_generator(self):
         """
         Check whether performance test will base on IXIA equipment.
-- 
1.9.3