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b715be5cf3
The client could bypass the password check by continuing after getting error from the server and guessing the network parameters. The server would still accept the rest of the setup and also network traffic. Add checks for normal and raw mode that user has authenticated before allowing any other communication. Problem found by Oscar Reparaz.
211 lines
4.6 KiB
C
211 lines
4.6 KiB
C
/*
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* Copyright (c) 2006-2014 Erik Ekman <yarrick@kryo.se>,
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* 2006-2009 Bjorn Andersson <flex@kryo.se>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <check.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "common.h"
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#include "encoding.h"
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#include "user.h"
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#include "test.h"
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START_TEST(test_init_users)
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{
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in_addr_t ip;
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char givenip[16];
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int i;
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int count;
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ip = inet_addr("127.0.0.1");
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count = init_users(ip, 27);
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for (i = 0; i < count; i++) {
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fail_unless(users[i].id == i);
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fail_unless(users[i].q.id == 0);
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fail_unless(users[i].inpacket.len == 0);
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fail_unless(users[i].outpacket.len == 0);
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snprintf(givenip, sizeof(givenip), "127.0.0.%d", i + 2);
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fail_unless(users[i].tun_ip == inet_addr(givenip));
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}
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}
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END_TEST
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START_TEST(test_users_waiting)
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{
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in_addr_t ip;
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ip = inet_addr("127.0.0.1");
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init_users(ip, 27);
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fail_unless(users_waiting_on_reply() == 0);
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users[3].active = 1;
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fail_unless(users_waiting_on_reply() == 0);
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users[3].last_pkt = time(NULL);
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fail_unless(users_waiting_on_reply() == 0);
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users[3].conn = CONN_DNS_NULL;
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users[3].q.id = 1;
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fail_unless(users_waiting_on_reply() == 1);
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}
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END_TEST
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START_TEST(test_find_user_by_ip)
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{
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in_addr_t ip;
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unsigned int testip;
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ip = inet_addr("127.0.0.1");
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init_users(ip, 27);
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users[0].conn = CONN_DNS_NULL;
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testip = (unsigned int) inet_addr("10.0.0.1");
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fail_unless(find_user_by_ip(testip) == -1);
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testip = (unsigned int) inet_addr("127.0.0.2");
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fail_unless(find_user_by_ip(testip) == -1);
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users[0].active = 1;
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testip = (unsigned int) inet_addr("127.0.0.2");
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fail_unless(find_user_by_ip(testip) == -1);
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users[0].last_pkt = time(NULL);
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testip = (unsigned int) inet_addr("127.0.0.2");
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fail_unless(find_user_by_ip(testip) == -1);
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users[0].authenticated = 1;
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testip = (unsigned int) inet_addr("127.0.0.2");
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fail_unless(find_user_by_ip(testip) == 0);
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}
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END_TEST
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START_TEST(test_all_users_waiting_to_send)
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{
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in_addr_t ip;
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ip = inet_addr("127.0.0.1");
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init_users(ip, 27);
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fail_unless(all_users_waiting_to_send() == 1);
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users[0].conn = CONN_DNS_NULL;
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users[0].active = 1;
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fail_unless(all_users_waiting_to_send() == 1);
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users[0].last_pkt = time(NULL);
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users[0].outpacket.len = 0;
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fail_unless(all_users_waiting_to_send() == 0);
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#ifdef OUTPACKETQ_LEN
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users[0].outpacketq_filled = 1;
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#else
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users[0].outpacket.len = 44;
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#endif
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fail_unless(all_users_waiting_to_send() == 1);
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}
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END_TEST
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START_TEST(test_find_available_user)
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{
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in_addr_t ip;
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int i;
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ip = inet_addr("127.0.0.1");
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init_users(ip, 27);
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for (i = 0; i < USERS; i++) {
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users[i].authenticated = 1;
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users[i].authenticated_raw = 1;
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fail_unless(find_available_user() == i);
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fail_if(users[i].authenticated);
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fail_if(users[i].authenticated_raw);
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}
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for (i = 0; i < USERS; i++) {
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fail_unless(find_available_user() == -1);
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}
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users[3].active = 0;
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fail_unless(find_available_user() == 3);
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fail_unless(find_available_user() == -1);
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users[3].last_pkt = 55;
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fail_unless(find_available_user() == 3);
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fail_unless(find_available_user() == -1);
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}
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END_TEST
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START_TEST(test_find_available_user_small_net)
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{
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in_addr_t ip;
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int i;
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ip = inet_addr("127.0.0.1");
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init_users(ip, 29); /* this should result in 5 enabled users */
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for (i = 0; i < 5; i++) {
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fail_unless(find_available_user() == i);
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}
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for (i = 0; i < USERS; i++) {
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fail_unless(find_available_user() == -1);
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}
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users[3].active = 0;
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fail_unless(find_available_user() == 3);
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fail_unless(find_available_user() == -1);
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users[3].last_pkt = 55;
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fail_unless(find_available_user() == 3);
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fail_unless(find_available_user() == -1);
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}
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END_TEST
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TCase *
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test_user_create_tests()
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{
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TCase *tc;
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tc = tcase_create("User");
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tcase_add_test(tc, test_init_users);
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tcase_add_test(tc, test_users_waiting);
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tcase_add_test(tc, test_find_user_by_ip);
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tcase_add_test(tc, test_all_users_waiting_to_send);
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tcase_add_test(tc, test_find_available_user);
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tcase_add_test(tc, test_find_available_user_small_net);
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return tc;
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}
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