From c861903f376fa38dd7981405cc2980557b325bb5 Mon Sep 17 00:00:00 2001 From: "gasperfele@fri1.uni-lj.si" Date: Sun, 1 Nov 2015 22:03:39 +0000 Subject: Added task. git-svn-id: https://svn.lusy.fri.uni-lj.si/kpov-public-svn/kpov-public@347 5cf9fbd1-b2bc-434c-b4b7-e852f4f63414 --- kpov_judge/tasks/mock_entrance_exam/task.py | 33 ++++++++++++++++------------- 1 file changed, 18 insertions(+), 15 deletions(-) diff --git a/kpov_judge/tasks/mock_entrance_exam/task.py b/kpov_judge/tasks/mock_entrance_exam/task.py index 8a0f80f..6aa2144 100644 --- a/kpov_judge/tasks/mock_entrance_exam/task.py +++ b/kpov_judge/tasks/mock_entrance_exam/task.py @@ -152,13 +152,15 @@ def task(student_IP, net_prog_name, def gen_params(user_id, params_meta): import random - r = random.Random(user_id) + r = random.Random(user_id+'evil cornholio') params = kpov_random_helpers.default_gen(user_id, params_meta) homedir = '/home/student/' params['env_c'] = "".join([r.choice('ABCDEFGHIJKLMNPRSTUVZ') for i in xrange(5)]) params['P_c'] = "".join([r.choice('abcdefghijklmnoprst') for i in xrange(5)]) + ".c" params['param_gen_seed'] = str(r.randint(0, 2**24)) params['c_destroy_gen_seed'] = str(r.randint(0, 2**24)) + dest_net = kpov_random_helpers.IPv4_subnet_gen(r, '10.0.2.128/26', 26) + params['student_IP'] = kpov_random_helpers.IPv4_addr_gen(r, dest_net)[0] for k in ['P_c', 'P_executable', 'out_stderr_c', 'P_script', 'out_stdout_c']: params[k] = homedir + params[k] return params @@ -246,13 +248,13 @@ int main(int argc, char **argv){ for (i = 0; i<100; i++){ printf("%c", 32 + (arg[i % arg_len] ^ var[i % env_len]) % 64); r += (int)arg[i % arg_len] + (int)var[i % env_len] + i; - if (i % 20 == 0){ + if (i % 17 == 0){ printf("RAUS\\n"); } - if (i % 31 == 0){ + if (i % 29 == 0){ printf("ma"); } - fprintf(stderr, "%c", (r % 32) + 'A'); + fprintf(stderr, "%c", (r % 31) + 'A'); if (i % 23 == 0){ fprintf(stderr, "PATACIS\\n"); } @@ -262,13 +264,13 @@ int main(int argc, char **argv){ return r % 16; } ''' - evil_shell_source = """#!/bin/sh -while true; do - ifconfig eth1 10.0.2.19; - ifconfig eth0 10.0.2.20; - ifconfig eth2 10.0.2.21; + evil_shell_source = """#!/bin/bash -e +{ while true; do + ifconfig eth1 10.0.4.19 2> /dev/null; + ifconfig eth0 10.0.4.20 2> /dev/null; + ifconfig eth2 10.0.4.21 2> /dev/null; sleep 10; -done +done; }& """ import random d = templates['student-entrance'] @@ -285,12 +287,13 @@ done destroyed_c_source += c d.write(params['P_c'], destroyed_c_source) d.chown(1000, 1000, params['P_c']) - sh_path ='/usr/local/bin/' + params['net_prog_name'] - d.write(sh_path, evil_shell_source) - d.chmod(0775, sh_path) + sh_path = r.choice(['/usr/share/doc', '/var/lib', '/usr/local/share', '/etc/alternatives']) + sh_file = sh_path + '/' + params['net_prog_name'] + d.write(sh_file, evil_shell_source) + d.chmod(0775, sh_file) d.write("/etc/rc.local", """#!/bin/sh -e - +export PATH=$PATH:{} {} & exit 0 -""".format(sh_path)) +""".format(sh_path, params['net_prog_name'])) -- cgit v1.2.1