From e33085889f26c76587fdab2ad600ed336dc028b5 Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Sat, 6 Oct 2018 23:35:00 +0200
Subject: Improve ssh error reporting in some tasks

---
 kpov_judge/tasks/rename_grep_network/task.py | 74 ++++++++++------------------
 1 file changed, 26 insertions(+), 48 deletions(-)

(limited to 'kpov_judge/tasks/rename_grep_network')

diff --git a/kpov_judge/tasks/rename_grep_network/task.py b/kpov_judge/tasks/rename_grep_network/task.py
index e8ce0b2..948edcf 100644
--- a/kpov_judge/tasks/rename_grep_network/task.py
+++ b/kpov_judge/tasks/rename_grep_network/task.py
@@ -139,26 +139,6 @@ params_meta = {
         'generated': True,
 
     },
-    # 'progname': {
-    #     'descriptions': {
-    #         'si': 'Ime programa',
-    #         'en': 'Program filename',
-    #     },
-    #     'w': False,
-    #     'public': True,
-    #     'type': 'filename',
-    #     'generated': True,
-    # },
-    'pubseed': {
-        'descriptions': {
-            'si': 'Nekaj nepredvidenega',
-            'en': 'A random seed',
-        },
-        'w': False,
-        'public': True,
-        'type': None,
-        'generated': True,
-    },
     'rndseed': {
         'descriptions': {
             'si': 'random seed za skrito datoteko',
@@ -171,30 +151,30 @@ params_meta = {
     },
 }
 
-def task(testip, testuser, passwd, mntdir, magicstr, pubseed):
+def task(testip, testuser, passwd, mntdir, magicstr):
+    import collections
     from pexpect import pxssh
-    import random
-    target = pxssh.pxssh()
-    target.login(testip, testuser, passwd)
-    target.sendline('ls ~/')
-    target.prompt()
-    home_ls = target.before
-    target.sendline('cat ~/*I*.txt')
-    target.prompt()
-    dst_file_contents = target.before
-    target.sendline('ls -l ~/*I*.txt')
-    target.prompt()
-    dst_ls = target.before
-    target.sendline('mount')
-    target.prompt()
-    mnt = target.before
-    results = {
-        'home_ls': home_ls,
-        'dst_ls': dst_ls,
-        'mnt': mnt,
-        'dst_file_contents': dst_file_contents,
-    }
-    target.logout()
+
+    commands = [
+        ('home_ls', 'ls ~/'),
+        ('dst_file_contents', 'cat ~/*I*.txt'),
+        ('dst_ls', 'ls -l ~/*I*.txt'),
+        ('mnt', 'mount'),
+    ]
+
+    results = collections.defaultdict(str)
+    try:
+        s = pxssh.pxssh(encoding='utf-8')
+        s.login(testip, testuser, passwd)
+        results['ssh'] = True
+        for test, command in commands:
+            s.sendline(command)
+            s.prompt()
+            if test:
+                results[test] = s.before
+        s.logout()
+    except Exception as ex:
+        results['ssh'] = str(ex)
     return results
 
 def gen_params(user_id, params_meta):
@@ -207,10 +187,6 @@ def gen_params(user_id, params_meta):
     params['passwd'] = kpov_random_helpers.alnum_gen(r, 8)
     params['magicstr'] = "".join([r.choice("qwerztlpoQWERTPOL") for i in range(10)])
     params['mntdir'] = "/" + kpov_random_helpers.default_generators['filename'](r)
-    # params['progname'] = kpov_random_helpers.default_generators['filename'](r)
-    # while params['dstfile'] == params['progname']:
-    #     params['progname'] = kpov_random_helpers.default_generators['filename'](r)
-    params['pubseed'] = kpov_random_helpers.alnum_gen(r, 8)
     params['rndseed'] = kpov_random_helpers.alnum_gen(r, 8)
     return params
 
@@ -220,6 +196,8 @@ def task_check(results, params):
     import re
     hints = []
     score = 0
+    if results['ssh'] is not True:
+        hints += ['ssh failed: ' + results['ssh']]
     hidden_contents = params['magicstr']
     r = random.Random(params['rndseed'])
     dstfile = "".join([r.choice("qQoOp") for i in range(64)]) + "I.txt"
@@ -242,7 +220,7 @@ def task_check(results, params):
     if results["dst_file_contents"] == expected_contents:
         score += 3
     else:
-        diff_pos = ""
+        diff_pos = (0, "")
         for i, c in enumerate(results["dst_file_contents"]):
             if len(expected_contents) < i or c != expected_contents[i]:
                 start = max(0, i-10)
-- 
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