1 /* Tox Shell
2 *
3 * Proof of concept ssh like server software using tox.
4 *
5 * Command line arguments are the ip, port and public_key of a node (for bootstrapping).
6 *
7 * EX: ./test 127.0.0.1 33445 CDCFD319CE3460824B33BE58FD86B8941C9585181D8FBD7C79C5721D7C2E9F7C
8 */
9
10 /*
11 * Copyright © 2016-2017 The TokTok team.
12 * Copyright © 2014 Tox project.
13 *
14 * This file is part of Tox, the free peer to peer instant messenger.
15 *
16 * Tox is free software: you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation, either version 3 of the License, or
19 * (at your option) any later version.
20 *
21 * Tox is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with Tox. If not, see <http://www.gnu.org/licenses/>.
28 */
29 #define _XOPEN_SOURCE 600
30
31 #include <tox/tox.h>
32
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <unistd.h>
36
37 #include "../util/misc_tools.h"
38
39 #if defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
40 #include <util.h>
41 #elif defined(__FreeBSD__) || defined(__DragonFly__)
42 #include <libutil.h>
43 #else
44 #include <pty.h>
45 #endif
46 #include <fcntl.h>
47
print_online(Tox * tox,uint32_t friendnumber,TOX_CONNECTION status,void * userdata)48 static void print_online(Tox *tox, uint32_t friendnumber, TOX_CONNECTION status, void *userdata)
49 {
50 if (status) {
51 printf("\nOther went online.\n");
52 } else {
53 printf("\nOther went offline.\n");
54 }
55 }
56
print_message(Tox * tox,uint32_t friendnumber,TOX_MESSAGE_TYPE type,const uint8_t * string,size_t length,void * userdata)57 static void print_message(Tox *tox, uint32_t friendnumber, TOX_MESSAGE_TYPE type, const uint8_t *string, size_t length,
58 void *userdata)
59 {
60 int master = *((int *)userdata);
61 write(master, string, length);
62 write(master, "\n", 1);
63 }
64
main(int argc,char * argv[])65 int main(int argc, char *argv[])
66 {
67 uint8_t ipv6enabled = 1; /* x */
68 int argvoffset = cmdline_parsefor_ipv46(argc, argv, &ipv6enabled);
69
70 if (argvoffset == -1) {
71 exit(1);
72 }
73
74 /* with optional --ipvx, now it can be 1-4 arguments... */
75 if ((argc != argvoffset + 2) && (argc != argvoffset + 4)) {
76 printf("Usage: %s [--ipv4|--ipv6] ip port public_key (of the DHT bootstrap node)\n", argv[0]);
77 exit(0);
78 }
79
80 int *master = (int *)malloc(sizeof(int));
81 int ret = forkpty(master, nullptr, nullptr, nullptr);
82
83 if (ret == -1) {
84 printf("fork failed\n");
85 free(master);
86 return 1;
87 }
88
89 if (ret == 0) {
90 execl("/bin/sh", "sh", nullptr);
91 return 0;
92 }
93
94 int flags = fcntl(*master, F_GETFL, 0);
95 int r = fcntl(*master, F_SETFL, flags | O_NONBLOCK);
96
97 if (r < 0) {
98 printf("error setting flags\n");
99 }
100
101 Tox *tox = tox_new(0, 0);
102 tox_callback_friend_connection_status(tox, print_online);
103 tox_callback_friend_message(tox, print_message);
104
105
106 uint16_t port = atoi(argv[argvoffset + 2]);
107 unsigned char *binary_string = hex_string_to_bin(argv[argvoffset + 3]);
108 int res = tox_bootstrap(tox, argv[argvoffset + 1], port, binary_string, 0);
109 free(binary_string);
110
111 if (!res) {
112 printf("Failed to convert \"%s\" into an IP address. Exiting...\n", argv[argvoffset + 1]);
113 exit(1);
114 }
115
116 uint8_t address[TOX_ADDRESS_SIZE];
117 tox_self_get_address(tox, address);
118 uint32_t i;
119
120 for (i = 0; i < TOX_ADDRESS_SIZE; i++) {
121 printf("%02X", address[i]);
122 }
123
124 char temp_id[128];
125 printf("\nEnter the address of the other id you want to sync with (38 bytes HEX format):\n");
126
127 if (scanf("%s", temp_id) != 1) {
128 return 1;
129 }
130
131 uint8_t *bin_id = hex_string_to_bin(temp_id);
132 uint32_t num = tox_friend_add(tox, bin_id, (const uint8_t *)"Install Gentoo", sizeof("Install Gentoo"), 0);
133 free(bin_id);
134
135 if (num == UINT32_MAX) {
136 printf("\nSomething went wrong when adding friend.\n");
137 return 1;
138 }
139
140 uint8_t notconnected = 1;
141
142 while (1) {
143 if (tox_self_get_connection_status(tox) && notconnected) {
144 printf("\nDHT connected.\n");
145 notconnected = 0;
146 }
147
148 while (tox_friend_get_connection_status(tox, num, 0)) {
149 uint8_t buf[TOX_MAX_MESSAGE_LENGTH];
150 ret = read(*master, buf, sizeof(buf));
151
152 if (ret <= 0) {
153 break;
154 }
155
156 tox_friend_send_message(tox, num, TOX_MESSAGE_TYPE_NORMAL, buf, ret, 0);
157 }
158
159 tox_iterate(tox, master);
160 c_sleep(1);
161 }
162 }
163