mirror of
https://github.com/Tha14/toxic.git
synced 2024-11-14 08:03:02 +01:00
Replace DNS-based username lookups with HTTPS & drop utox.org support
This commit is contained in:
Jfreegman
parent
f7e48d294e
commit
8584feab80
@ -10,11 +10,12 @@
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<a name="deps" />
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## Dependencies
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| Name | Needed by | Debian package |
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|------------------------------------------------------|----------------------------|------------------|
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|------------------------------------------------------|----------------------------|---------------------|
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| [Tox Core](https://github.com/irungentoo/toxcore) | BASE | *None* |
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| [NCurses](https://www.gnu.org/software/ncurses) | BASE | libncursesw5-dev |
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| [LibConfig](http://www.hyperrealm.com/libconfig) | BASE | libconfig-dev |
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| [GNUmake](https://www.gnu.org/software/make) | BASE | make |
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| [libcurl](http://curl.haxx.se/) | BASE | libcurl4-openssl-dev|
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| [Tox Core AV](https://github.com/irungentoo/toxcore) | AUDIO | *None* |
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| [OpenAL](http://openal.org) | AUDIO, SOUND NOTIFICATIONS | libopenal-dev |
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| [OpenALUT](http://openal.org) | SOUND NOTIFICATIONS | libalut-dev |
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4
Makefile
4
Makefile
@ -11,10 +11,10 @@ CFLAGS += '-DPACKAGE_DATADIR="$(abspath $(DATADIR))"'
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CFLAGS += $(USER_CFLAGS)
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LDFLAGS = $(USER_LDFLAGS)
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OBJ = chat.o chat_commands.o configdir.o dns.o execute.o file_transfers.o notify.o
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OBJ = chat.o chat_commands.o configdir.o execute.o file_transfers.o notify.o
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OBJ += friendlist.o global_commands.o groupchat.o line_info.o input.o help.o autocomplete.o
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OBJ += log.o misc_tools.o prompt.o settings.o toxic.o toxic_strings.o windows.o message_queue.o
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OBJ += group_commands.o term_mplex.o avatars.o
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OBJ += group_commands.o term_mplex.o avatars.o name_lookup.o
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# Check on wich system we are running
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UNAME_S = $(shell uname -s)
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@ -16,7 +16,7 @@ MISC_DIR = $(BASE_DIR)/misc
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# Project files
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MANFILES = toxic.1 toxic.conf.5
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DATAFILES = DHTnodes DNSservers toxic.conf.example
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DATAFILES = DHTnodes nameservers toxic.conf.example
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DESKFILE = toxic.desktop
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SNDFILES = ToxicContactOnline.wav ToxicContactOffline.wav ToxicError.wav
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SNDFILES += ToxicRecvMessage.wav ToxicOutgoingCall.wav ToxicIncomingCall.wav
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@ -6,5 +6,5 @@ PKG_CONFIG_PATH = $(shell export PKG_CONFIG_PATH=/usr/lib/pkgconfig:/usr/local/o
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LIBS := $(filter-out ncursesw, $(LIBS))
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# OS X ships a usable, recent version of ncurses, but calls it ncurses not ncursesw.
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LDFLAGS += -lncurses -lalut -ltoxav -ltoxcore -ltoxdns -lresolv -lconfig -ltoxencryptsave -g
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LDFLAGS += -lncurses -lalut -ltoxav -ltoxcore -lcurl -lconfig -ltoxencryptsave -g
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CFLAGS += -I/usr/local/opt/freealut/include/AL -I/usr/local/opt/glib/include/glib-2.0 -g
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@ -1,4 +1,4 @@
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# Specials options for linux systems
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CFLAGS +=
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LDFLAGS += -ldl -lresolv -lrt
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LDFLAGS += -ldl -lrt -lcurl
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MANDIR = $(PREFIX)/share/man
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@ -2,12 +2,12 @@
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.\" Title: toxic
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.\" Author: [see the "AUTHORS" section]
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.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
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.\" Date: 2015-03-28
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.\" Date: 2015-07-08
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.\" Manual: Toxic Manual
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.\" Source: toxic __VERSION__
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.\" Language: English
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.\"
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.TH "TOXIC" "1" "2015\-03\-28" "toxic __VERSION__" "Toxic Manual"
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.TH "TOXIC" "1" "2015\-07\-08" "toxic __VERSION__" "Toxic Manual"
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.\" -----------------------------------------------------------------
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.\" * Define some portability stuff
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.\" -----------------------------------------------------------------
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@ -101,9 +101,9 @@ Use a SOCKS5 proxy: Requires [IP] [port]
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Use a HTTP proxy: Requires [IP] [port]
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.RE
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.PP
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\-r, \-\-dnslist
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\-r, \-\-namelist
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.RS 4
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Use specified DNSservers file
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Use specified nameservers list
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.RE
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.PP
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\-t, \-\-force\-tcp
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@ -53,8 +53,8 @@ OPTIONS
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-P, --HTTP-proxy::
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Use a HTTP proxy: Requires [IP] [port]
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-r, --dnslist::
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Use specified DNSservers file
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-r, --namelist::
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Use specified nameservers list
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-t, --force-tcp::
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Force TCP connection (use this with proxies)
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@ -1,3 +1,2 @@
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utox.org d3154f65d28a5b41a05d4ac7e4b39c6b1c233cc857fb365c56e8392737462a12
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toxme.io 1A39E7A5D5FA9CF155C751570A32E625698A60A55F6D88028F949F66144F4F25
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391
src/dns.c
391
src/dns.c
@ -1,391 +0,0 @@
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/* dns.c
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*
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*
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* Copyright (C) 2014 Toxic All Rights Reserved.
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*
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* This file is part of Toxic.
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*
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* Toxic is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Toxic is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Toxic. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h> /* for u_char */
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#include <netinet/in.h>
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#include <resolv.h>
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#ifdef __APPLE__
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#include <arpa/nameser_compat.h>
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#else
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#include <arpa/nameser.h>
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#endif /* ifdef __APPLE__ */
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#include <tox/toxdns.h>
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#include "toxic.h"
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#include "windows.h"
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#include "line_info.h"
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#include "dns.h"
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#include "global_commands.h"
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#include "misc_tools.h"
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#include "configdir.h"
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#define DNS3_KEY_SIZE 32
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#define MAX_DNS_REQST_SIZE 255
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#define TOX_DNS3_TXT_PREFIX "v=tox3;id="
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extern struct Winthread Winthread;
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extern struct dns3_servers dns3_servers;
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extern struct arg_opts arg_opts;
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static struct thread_data {
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ToxWindow *self;
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char id_bin[TOX_ADDRESS_SIZE];
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char addr[MAX_STR_SIZE];
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char msg[MAX_STR_SIZE];
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uint8_t busy;
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Tox *m;
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} t_data;
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static struct dns_thread {
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pthread_t tid;
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pthread_attr_t attr;
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} dns_thread;
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#define MAX_DNS_SERVERS 50
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#define MAX_DOMAIN_SIZE 32
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#define MAX_DNS_LINE MAX_DOMAIN_SIZE + (DNS3_KEY_SIZE * 2) + 3
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struct dns3_servers {
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bool loaded;
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int lines;
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char names[MAX_DNS_SERVERS][MAX_DOMAIN_SIZE];
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char keys[MAX_DNS_SERVERS][DNS3_KEY_SIZE];
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} dns3_servers;
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static int load_dns_domainlist(const char *path)
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{
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FILE *fp = fopen(path, "r");
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if (fp == NULL)
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return -1;
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char line[MAX_DNS_LINE];
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while (fgets(line, sizeof(line), fp) && dns3_servers.lines < MAX_DNS_SERVERS) {
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int linelen = strlen(line);
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if (linelen < DNS3_KEY_SIZE * 2 + 5)
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continue;
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if (line[linelen - 1] == '\n')
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line[--linelen] = '\0';
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const char *name = strtok(line, " ");
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const char *keystr = strtok(NULL, " ");
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if (name == NULL || keystr == NULL)
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continue;
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if (strlen(keystr) != DNS3_KEY_SIZE * 2)
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continue;
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snprintf(dns3_servers.names[dns3_servers.lines], sizeof(dns3_servers.names[dns3_servers.lines]), "%s", name);
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int res = hex_string_to_bytes(dns3_servers.keys[dns3_servers.lines], DNS3_KEY_SIZE, keystr);
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if (res == -1)
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continue;
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++dns3_servers.lines;
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}
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fclose(fp);
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if (dns3_servers.lines < 1)
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return -2;
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return 0;
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}
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static int dns_error(ToxWindow *self, const char *errmsg)
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{
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pthread_mutex_lock(&Winthread.lock);
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line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "User lookup failed: %s", errmsg);
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pthread_mutex_unlock(&Winthread.lock);
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return -1;
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}
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static void killdns_thread(void *dns_obj)
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{
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if (dns_obj)
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tox_dns3_kill(dns_obj);
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memset(&t_data, 0, sizeof(struct thread_data));
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pthread_attr_destroy(&dns_thread.attr);
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pthread_exit(NULL);
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}
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/* puts TXT from dns response in buf. Returns length of TXT on success, -1 on fail.*/
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static int parse_dns_response(ToxWindow *self, u_char *answer, int ans_len, char *buf)
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{
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uint8_t *ans_pt = answer + sizeof(HEADER);
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uint8_t *ans_end = answer + ans_len;
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char exp_ans[PACKETSZ];
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int len = dn_expand(answer, ans_end, ans_pt, exp_ans, sizeof(exp_ans));
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if (len == -1)
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return dns_error(self, "dn_expand failed.");
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ans_pt += len;
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if (ans_pt > ans_end - 4)
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return dns_error(self, "DNS reply was too short.");
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int type;
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GETSHORT(type, ans_pt);
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if (type != T_TXT)
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return dns_error(self, "Broken DNS reply.");
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ans_pt += INT16SZ; /* class */
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uint32_t size = 0;
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/* recurse through CNAME rr's */
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do {
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ans_pt += size;
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len = dn_expand(answer, ans_end, ans_pt, exp_ans, sizeof(exp_ans));
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if (len == -1)
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return dns_error(self, "Second dn_expand failed.");
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ans_pt += len;
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if (ans_pt > ans_end - 10)
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return dns_error(self, "DNS reply was too short.");
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GETSHORT(type, ans_pt);
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ans_pt += INT16SZ;
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ans_pt += 4;
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GETSHORT(size, ans_pt);
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if (ans_pt + size < answer || ans_pt + size > ans_end)
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return dns_error(self, "RR overflow.");
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} while (type == T_CNAME);
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if (type != T_TXT)
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return dns_error(self, "DNS response failed.");
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uint32_t txt_len = *ans_pt;
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if (!size || txt_len >= size || !txt_len)
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return dns_error(self, "No record found.");
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if (txt_len > MAX_DNS_REQST_SIZE)
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return dns_error(self, "Invalid DNS response.");
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ans_pt++;
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ans_pt[txt_len] = '\0';
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memcpy(buf, ans_pt, txt_len + 1);
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return txt_len;
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}
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/* Takes address addr in the form "username@domain", puts the username in namebuf,
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and the domain in dombuf.
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return length of username on success, -1 on failure */
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static int parse_addr(const char *addr, char *namebuf, size_t namebuf_sz, char *dombuf, size_t dombuf_sz)
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{
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if (strlen(addr) >= MAX_STR_SIZE)
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return -1;
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char tmpaddr[MAX_STR_SIZE];
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char *tmpname = NULL;
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char *tmpdom = NULL;
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snprintf(tmpaddr, sizeof(tmpaddr), "%s", addr);
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tmpname = strtok(tmpaddr, "@");
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tmpdom = strtok(NULL, "");
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if (tmpname == NULL || tmpdom == NULL)
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return -1;
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str_to_lower(tmpdom);
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snprintf(namebuf, namebuf_sz, "%s", tmpname);
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snprintf(dombuf, dombuf_sz, "%s", tmpdom);
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return strlen(namebuf);
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}
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/* matches input domain name with domains in list and obtains key. Return 0 on success, -1 on failure */
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static int get_domain_match(char *pubkey, char *domain, const char *inputdomain)
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{
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int i;
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for (i = 0; i < dns3_servers.lines; ++i) {
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if (strcmp(dns3_servers.names[i], inputdomain) == 0) {
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memcpy(pubkey, dns3_servers.keys[i], DNS3_KEY_SIZE);
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snprintf(domain, MAX_DOMAIN_SIZE, "%s", dns3_servers.names[i]);
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return 0;
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}
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}
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return -1;
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}
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/* Does DNS lookup for addr and puts resulting tox id in id_bin. */
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void *dns3_lookup_thread(void *data)
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{
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ToxWindow *self = t_data.self;
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char inputdomain[MAX_STR_SIZE];
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char name[MAX_STR_SIZE];
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int namelen = parse_addr(t_data.addr, name, sizeof(name), inputdomain, sizeof(inputdomain));
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if (namelen == -1) {
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dns_error(self, "Must be a Tox ID or an address in the form username@domain");
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killdns_thread(NULL);
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}
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char DNS_pubkey[DNS3_KEY_SIZE];
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char domain[MAX_DOMAIN_SIZE];
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int match = get_domain_match(DNS_pubkey, domain, inputdomain);
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if (match == -1) {
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dns_error(self, "Domain not found.");
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killdns_thread(NULL);
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}
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void *dns_obj = tox_dns3_new((uint8_t *) DNS_pubkey);
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if (dns_obj == NULL) {
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dns_error(self, "Core failed to create DNS object.");
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killdns_thread(NULL);
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}
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char string[MAX_DNS_REQST_SIZE + 1];
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uint32_t request_id;
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int str_len = tox_generate_dns3_string(dns_obj, (uint8_t *) string, sizeof(string), &request_id,
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(uint8_t *) name, namelen);
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if (str_len == -1) {
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dns_error(self, "Core failed to generate DNS3 string.");
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killdns_thread(dns_obj);
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}
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string[str_len] = '\0';
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u_char answer[PACKETSZ];
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char d_string[MAX_DOMAIN_SIZE + MAX_DNS_REQST_SIZE + 10];
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/* format string and create dns query */
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snprintf(d_string, sizeof(d_string), "_%s._tox.%s", string, domain);
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int ans_len = res_query(d_string, C_IN, T_TXT, answer, sizeof(answer));
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if (ans_len <= 0) {
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dns_error(self, "DNS query failed.");
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killdns_thread(dns_obj);
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}
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char ans_id[MAX_DNS_REQST_SIZE + 1];
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/* extract TXT from DNS response */
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if (parse_dns_response(self, answer, ans_len, ans_id) == -1)
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killdns_thread(dns_obj);
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char encrypted_id[MAX_DNS_REQST_SIZE + 1];
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int prfx_len = strlen(TOX_DNS3_TXT_PREFIX);
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/* extract the encrypted ID from TXT response */
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if (strncmp(ans_id, TOX_DNS3_TXT_PREFIX, prfx_len) != 0) {
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dns_error(self, "Bad DNS3 TXT response.");
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killdns_thread(dns_obj);
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}
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memcpy(encrypted_id, ans_id + prfx_len, ans_len - prfx_len);
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if (tox_decrypt_dns3_TXT(dns_obj, (uint8_t *) t_data.id_bin, (uint8_t *) encrypted_id,
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strlen(encrypted_id), request_id) == -1) {
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dns_error(self, "Core failed to decrypt DNS response.");
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killdns_thread(dns_obj);
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}
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pthread_mutex_lock(&Winthread.lock);
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cmd_add_helper(self, t_data.m, t_data.id_bin, t_data.msg);
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pthread_mutex_unlock(&Winthread.lock);
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killdns_thread(dns_obj);
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return 0;
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}
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/* creates new thread for dns3 lookup. Only allows one lookup at a time. */
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void dns3_lookup(ToxWindow *self, Tox *m, const char *id_bin, const char *addr, const char *msg)
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{
|
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if (arg_opts.proxy_type != TOX_PROXY_TYPE_NONE && arg_opts.force_tcp) {
|
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line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "DNS lookups are disabled.");
|
||||
return;
|
||||
}
|
||||
|
||||
if (t_data.busy) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Please wait for previous user lookup to finish.");
|
||||
return;
|
||||
}
|
||||
|
||||
if (!dns3_servers.loaded) {
|
||||
const char *path = arg_opts.dns_path[0] ? arg_opts.dns_path : PACKAGE_DATADIR "/DNSservers";
|
||||
dns3_servers.loaded = true;
|
||||
int ret = load_dns_domainlist(path);
|
||||
|
||||
if (ret < 0) {
|
||||
const char *errmsg = "DNS server list failed to load with error code %d. Falling back to hard-coded list.";
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, errmsg, ret);
|
||||
}
|
||||
}
|
||||
|
||||
snprintf(t_data.id_bin, sizeof(t_data.id_bin), "%s", id_bin);
|
||||
snprintf(t_data.addr, sizeof(t_data.addr), "%s", addr);
|
||||
snprintf(t_data.msg, sizeof(t_data.msg), "%s", msg);
|
||||
t_data.self = self;
|
||||
t_data.m = m;
|
||||
t_data.busy = 1;
|
||||
|
||||
if (pthread_attr_init(&dns_thread.attr) != 0) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, RED, "Error: DNS thread attr failed to init");
|
||||
memset(&t_data, 0, sizeof(struct thread_data));
|
||||
return;
|
||||
}
|
||||
|
||||
if (pthread_attr_setdetachstate(&dns_thread.attr, PTHREAD_CREATE_DETACHED) != 0) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, RED, "Error: DNS thread attr failed to set");
|
||||
pthread_attr_destroy(&dns_thread.attr);
|
||||
memset(&t_data, 0, sizeof(struct thread_data));
|
||||
return;
|
||||
}
|
||||
|
||||
if (pthread_create(&dns_thread.tid, &dns_thread.attr, dns3_lookup_thread, NULL) != 0) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, RED, "Error: DNS thread failed to init");
|
||||
pthread_attr_destroy(&dns_thread.attr);
|
||||
memset(&t_data, 0, sizeof(struct thread_data));
|
||||
return;
|
||||
}
|
||||
}
|
||||
@ -30,12 +30,12 @@
|
||||
#include "friendlist.h"
|
||||
#include "log.h"
|
||||
#include "line_info.h"
|
||||
#include "dns.h"
|
||||
#include "groupchat.h"
|
||||
#include "prompt.h"
|
||||
#include "help.h"
|
||||
#include "term_mplex.h"
|
||||
#include "avatars.h"
|
||||
#include "name_lookup.h"
|
||||
|
||||
extern char *DATA_FILE;
|
||||
extern ToxWindow *prompt;
|
||||
@ -192,8 +192,8 @@ void cmd_add(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX
|
||||
}
|
||||
|
||||
cmd_add_helper(self, m, id_bin, msg);
|
||||
} else { /* assume id is a username@domain address and do DNS lookup */
|
||||
dns3_lookup(self, m, id_bin, id, msg);
|
||||
} else { /* assume id is a username@domain address and do http name server lookup */
|
||||
name_lookup(self, m, id_bin, id, msg);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
391
src/name_lookup.c
Normal file
391
src/name_lookup.c
Normal file
@ -0,0 +1,391 @@
|
||||
/* name_lookup.c
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2015 Toxic All Rights Reserved.
|
||||
*
|
||||
* This file is part of Toxic.
|
||||
*
|
||||
* Toxic is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* Toxic is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with Toxic. If not, see <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <sys/types.h> /* for u_char */
|
||||
#include <curl/curl.h>
|
||||
|
||||
#include "toxic.h"
|
||||
#include "windows.h"
|
||||
#include "line_info.h"
|
||||
#include "global_commands.h"
|
||||
#include "misc_tools.h"
|
||||
#include "configdir.h"
|
||||
|
||||
extern struct arg_opts arg_opts;
|
||||
extern struct Winthread Winthread;;
|
||||
|
||||
#define NAMESERVER_API_PATH "api"
|
||||
#define SERVER_KEY_SIZE 32
|
||||
#define MAX_SERVERS 50
|
||||
#define MAX_DOMAIN_SIZE 32
|
||||
#define MAX_SERVER_LINE MAX_DOMAIN_SIZE + (SERVER_KEY_SIZE * 2) + 3
|
||||
|
||||
struct Nameservers {
|
||||
int lines;
|
||||
char names[MAX_SERVERS][MAX_DOMAIN_SIZE];
|
||||
char keys[MAX_SERVERS][SERVER_KEY_SIZE];
|
||||
} Nameservers;
|
||||
|
||||
static struct thread_data {
|
||||
Tox *m;
|
||||
ToxWindow *self;
|
||||
char id_bin[TOX_ADDRESS_SIZE];
|
||||
char addr[MAX_STR_SIZE];
|
||||
char msg[MAX_STR_SIZE];
|
||||
bool busy;
|
||||
bool disabled;
|
||||
} t_data;
|
||||
|
||||
static struct lookup_thread {
|
||||
pthread_t tid;
|
||||
pthread_attr_t attr;
|
||||
} lookup_thread;
|
||||
|
||||
static int lookup_error(ToxWindow *self, const char *errmsg)
|
||||
{
|
||||
pthread_mutex_lock(&Winthread.lock);
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "name lookup failed: %s", errmsg);
|
||||
pthread_mutex_unlock(&Winthread.lock);
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
static void kill_lookup_thread(void)
|
||||
{
|
||||
memset(&t_data, 0, sizeof(struct thread_data));
|
||||
pthread_attr_destroy(&lookup_thread.attr);
|
||||
pthread_exit(NULL);
|
||||
}
|
||||
|
||||
/* Attempts to load the nameserver list pointed at by path into the Nameservers structure.
|
||||
*
|
||||
* Returns 0 on success.
|
||||
* -1 is reserved.
|
||||
* Returns -2 if the supplied path does not exist.
|
||||
* Returns -3 if the list does not contain any valid entries.
|
||||
*/
|
||||
static int load_nameserver_list(const char *path)
|
||||
{
|
||||
FILE *fp = fopen(path, "r");
|
||||
|
||||
if (fp == NULL)
|
||||
return -2;
|
||||
|
||||
char line[MAX_SERVER_LINE];
|
||||
|
||||
while (fgets(line, sizeof(line), fp) && Nameservers.lines < MAX_SERVERS) {
|
||||
int linelen = strlen(line);
|
||||
|
||||
if (linelen < SERVER_KEY_SIZE * 2 + 5)
|
||||
continue;
|
||||
|
||||
if (line[linelen - 1] == '\n')
|
||||
line[--linelen] = '\0';
|
||||
|
||||
const char *name = strtok(line, " ");
|
||||
const char *keystr = strtok(NULL, " ");
|
||||
|
||||
if (name == NULL || keystr == NULL)
|
||||
continue;
|
||||
|
||||
if (strlen(keystr) != SERVER_KEY_SIZE * 2)
|
||||
continue;
|
||||
|
||||
snprintf(Nameservers.names[Nameservers.lines], sizeof(Nameservers.names[Nameservers.lines]), "%s", name);
|
||||
int res = hex_string_to_bytes(Nameservers.keys[Nameservers.lines], SERVER_KEY_SIZE, keystr);
|
||||
|
||||
if (res == -1)
|
||||
continue;
|
||||
|
||||
++Nameservers.lines;
|
||||
}
|
||||
|
||||
fclose(fp);
|
||||
|
||||
if (Nameservers.lines < 1)
|
||||
return -3;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Takes address addr in the form "username@domain", puts the username in namebuf,
|
||||
* and the domain in dombuf.
|
||||
*
|
||||
* Returns 0 on success.
|
||||
* Returns -1 on failure
|
||||
*/
|
||||
static int parse_addr(const char *addr, char *namebuf, size_t namebuf_sz, char *dombuf, size_t dombuf_sz)
|
||||
{
|
||||
if (strlen(addr) >= (MAX_STR_SIZE - strlen(NAMESERVER_API_PATH)))
|
||||
return -1;
|
||||
|
||||
char tmpaddr[MAX_STR_SIZE];
|
||||
char *tmpname = NULL;
|
||||
char *tmpdom = NULL;
|
||||
|
||||
snprintf(tmpaddr, sizeof(tmpaddr), "%s", addr);
|
||||
tmpname = strtok(tmpaddr, "@");
|
||||
tmpdom = strtok(NULL, "");
|
||||
|
||||
if (tmpname == NULL || tmpdom == NULL)
|
||||
return -1;
|
||||
|
||||
str_to_lower(tmpdom);
|
||||
snprintf(namebuf, namebuf_sz, "%s", tmpname);
|
||||
snprintf(dombuf, dombuf_sz, "%s", tmpdom);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* matches input domain name with domains in list and obtains key.
|
||||
* Turns out_domain into the full domain we need to make a POST request.
|
||||
*
|
||||
* Return true on match.
|
||||
* Returns false on no match.
|
||||
*/
|
||||
static bool get_domain_match(char *pubkey, char *out_domain, size_t out_domain_size, const char *inputdomain)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < Nameservers.lines; ++i) {
|
||||
if (strcmp(Nameservers.names[i], inputdomain) == 0) {
|
||||
memcpy(pubkey, Nameservers.keys[i], SERVER_KEY_SIZE);
|
||||
snprintf(out_domain, out_domain_size, "https://%s/%s", Nameservers.names[i], NAMESERVER_API_PATH);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
#define MAX_RECV_LOOKUP_DATA_SIZE 1024
|
||||
|
||||
/* Holds raw data received from name server */
|
||||
struct Recv_Data {
|
||||
char data[MAX_RECV_LOOKUP_DATA_SIZE];
|
||||
size_t size;
|
||||
};
|
||||
|
||||
size_t write_lookup_data(void *data, size_t size, size_t nmemb, void *user_pointer)
|
||||
{
|
||||
struct Recv_Data *recv_data = (struct Recv_Data *) user_pointer;
|
||||
size_t real_size = size * nmemb;
|
||||
|
||||
if (real_size > MAX_RECV_LOOKUP_DATA_SIZE)
|
||||
return 0;
|
||||
|
||||
memcpy(&recv_data->data, data, real_size);
|
||||
recv_data->size = real_size;
|
||||
recv_data->data[real_size] = 0;
|
||||
|
||||
return real_size;
|
||||
}
|
||||
|
||||
/* Converts Tox ID string contained in recv_data to binary format and puts it in thread's ID buffer.
|
||||
*
|
||||
* Returns 0 on success.
|
||||
* Returns -1 on failure.
|
||||
*/
|
||||
#define ID_PREFIX "\"tox_id\": \""
|
||||
static int process_response(struct Recv_Data *recv_data)
|
||||
{
|
||||
size_t prefix_size = strlen(ID_PREFIX);
|
||||
|
||||
if (recv_data->size < TOX_ADDRESS_SIZE * 2 + prefix_size)
|
||||
return -1;
|
||||
|
||||
const char *IDstart = strstr(recv_data->data, ID_PREFIX);
|
||||
|
||||
if (IDstart == NULL)
|
||||
return -1;
|
||||
|
||||
if (strlen(IDstart) < TOX_ADDRESS_SIZE * 2 + prefix_size)
|
||||
return -1;
|
||||
|
||||
char ID_string[TOX_ADDRESS_SIZE * 2 + 1];
|
||||
memcpy(ID_string, IDstart + prefix_size, TOX_ADDRESS_SIZE * 2);
|
||||
ID_string[TOX_ADDRESS_SIZE * 2] = 0;
|
||||
|
||||
if (hex_string_to_bin(ID_string, strlen(ID_string), t_data.id_bin, sizeof(t_data.id_bin)) == -1)
|
||||
return -1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void *lookup_thread_func(void *data)
|
||||
{
|
||||
ToxWindow *self = t_data.self;
|
||||
|
||||
char input_domain[MAX_STR_SIZE];
|
||||
char name[MAX_STR_SIZE];
|
||||
|
||||
if (parse_addr(t_data.addr, name, sizeof(name), input_domain, sizeof(input_domain)) == -1) {
|
||||
lookup_error(self, "Input must be a 76 character Tox ID or an address in the form: username@domain");
|
||||
kill_lookup_thread();
|
||||
}
|
||||
|
||||
char nameserver_key[SERVER_KEY_SIZE];
|
||||
char real_domain[MAX_DOMAIN_SIZE];
|
||||
|
||||
if (!get_domain_match(nameserver_key, real_domain, sizeof(real_domain), input_domain)) {
|
||||
if (!strcasecmp(input_domain, "utox.org"))
|
||||
lookup_error(self, "utox.org uses deprecated DNS-based lookups and is no longer supported by Toxic");
|
||||
else
|
||||
lookup_error(self, "Name server domain not found.");
|
||||
|
||||
kill_lookup_thread();
|
||||
}
|
||||
|
||||
CURL *c_handle = curl_easy_init();
|
||||
|
||||
if (!c_handle) {
|
||||
lookup_error(self, "curl handler error");
|
||||
kill_lookup_thread();
|
||||
}
|
||||
|
||||
struct Recv_Data recv_data;
|
||||
memset(&recv_data, 0, sizeof(struct Recv_Data));
|
||||
|
||||
char post_data[MAX_STR_SIZE];
|
||||
snprintf(post_data, sizeof(post_data), "{\"action\": 3, \"name\": \"%s\"}", name);
|
||||
|
||||
struct curl_slist *headers = NULL;
|
||||
|
||||
headers = curl_slist_append(headers, "Content-Type: application/json");
|
||||
headers = curl_slist_append(headers, "charsets: utf-8");
|
||||
|
||||
curl_easy_setopt(c_handle, CURLOPT_HTTPHEADER, headers);
|
||||
curl_easy_setopt(c_handle, CURLOPT_URL, real_domain);
|
||||
curl_easy_setopt(c_handle, CURLOPT_WRITEFUNCTION, write_lookup_data);
|
||||
curl_easy_setopt(c_handle, CURLOPT_WRITEDATA, (void *) &recv_data);
|
||||
curl_easy_setopt(c_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
|
||||
curl_easy_setopt(c_handle, CURLOPT_POSTFIELDS, post_data);
|
||||
|
||||
if (curl_easy_setopt(c_handle, CURLOPT_USE_SSL, CURLUSESSL_ALL) != CURLE_OK) {
|
||||
lookup_error(self, "Failed to enable TLS.");
|
||||
goto on_exit;
|
||||
}
|
||||
|
||||
if (curl_easy_setopt(c_handle, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2) != CURLE_OK) {
|
||||
lookup_error(self, "TLSv1.2 could not be set.");
|
||||
goto on_exit;
|
||||
}
|
||||
|
||||
if (curl_easy_perform(c_handle) != CURLE_OK) {
|
||||
lookup_error(self, "curl lookup error.");
|
||||
goto on_exit;
|
||||
}
|
||||
|
||||
if (process_response(&recv_data) == -1) {
|
||||
lookup_error(self, "parsing error.");
|
||||
goto on_exit;
|
||||
}
|
||||
|
||||
pthread_mutex_lock(&Winthread.lock);
|
||||
cmd_add_helper(self, t_data.m, t_data.id_bin, t_data.msg);
|
||||
pthread_mutex_unlock(&Winthread.lock);
|
||||
|
||||
on_exit:
|
||||
curl_slist_free_all(headers);
|
||||
curl_easy_cleanup(c_handle);
|
||||
kill_lookup_thread();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void name_lookup(ToxWindow *self, Tox *m, const char *id_bin, const char *addr, const char *message)
|
||||
{
|
||||
if (t_data.disabled) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "name lookups are disabled.");
|
||||
return;
|
||||
}
|
||||
|
||||
if (arg_opts.proxy_type != TOX_PROXY_TYPE_NONE && arg_opts.force_tcp) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "name lookups are disabled.");
|
||||
return;
|
||||
}
|
||||
|
||||
if (t_data.busy) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Please wait for previous name lookup to finish.");
|
||||
return;
|
||||
}
|
||||
|
||||
snprintf(t_data.id_bin, sizeof(t_data.id_bin), "%s", id_bin);
|
||||
snprintf(t_data.addr, sizeof(t_data.addr), "%s", addr);
|
||||
snprintf(t_data.msg, sizeof(t_data.msg), "%s", message);
|
||||
t_data.self = self;
|
||||
t_data.m = m;
|
||||
t_data.busy = true;
|
||||
|
||||
if (pthread_attr_init(&lookup_thread.attr) != 0) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, RED, "Error: lookup thread attr failed to init");
|
||||
memset(&t_data, 0, sizeof(struct thread_data));
|
||||
return;
|
||||
}
|
||||
|
||||
if (pthread_attr_setdetachstate(&lookup_thread.attr, PTHREAD_CREATE_DETACHED) != 0) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, RED, "Error: lookup thread attr failed to set");
|
||||
pthread_attr_destroy(&lookup_thread.attr);
|
||||
memset(&t_data, 0, sizeof(struct thread_data));
|
||||
return;
|
||||
}
|
||||
|
||||
if (pthread_create(&lookup_thread.tid, &lookup_thread.attr, lookup_thread_func, NULL) != 0) {
|
||||
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, RED, "Error: lookup thread failed to init");
|
||||
pthread_attr_destroy(&lookup_thread.attr);
|
||||
memset(&t_data, 0, sizeof(struct thread_data));
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/* Initializes http based name lookups. Note: This function must be called only once before additional
|
||||
* threads are spawned.
|
||||
*
|
||||
* Returns 0 on success.
|
||||
* Returns -1 if curl failed to init.
|
||||
* Returns -2 if the nameserver list cannot be found.
|
||||
* Returns -3 if the nameserver list does not contain any valid entries.
|
||||
*/
|
||||
int name_lookup_init(void)
|
||||
{
|
||||
if (curl_global_init(CURL_GLOBAL_ALL) != 0) {
|
||||
t_data.disabled = true;
|
||||
return -1;
|
||||
}
|
||||
|
||||
const char *path = arg_opts.nameserver_path[0] ? arg_opts.nameserver_path : PACKAGE_DATADIR "/nameservers";
|
||||
int ret = load_nameserver_list(path);
|
||||
|
||||
if (ret != 0) {
|
||||
t_data.disabled = true;
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void name_lookup_cleanup(void)
|
||||
{
|
||||
curl_global_cleanup();
|
||||
}
|
||||
@ -1,7 +1,7 @@
|
||||
/* dns.c
|
||||
/* name_lookup.h
|
||||
*
|
||||
*
|
||||
* Copyright (C) 2014 Toxic All Rights Reserved.
|
||||
* Copyright (C) 2015 Toxic All Rights Reserved.
|
||||
*
|
||||
* This file is part of Toxic.
|
||||
*
|
||||
@ -20,13 +20,18 @@
|
||||
*
|
||||
*/
|
||||
|
||||
/* Does DNS lookup for addr and puts resulting tox id in id_bin.
|
||||
Return 0 on success, -1 on failure. */
|
||||
#ifndef NAME_LOOKUP
|
||||
#define NAME_LOOKUP
|
||||
|
||||
#ifndef DNS_H
|
||||
#define DNS_H
|
||||
/* Initializes http based name lookups. Note: This function must be called only once before additional
|
||||
* threads are spawned.
|
||||
*
|
||||
* Returns 0 on success.
|
||||
* Returns -1 on failure.
|
||||
*/
|
||||
int name_lookup_init(void);
|
||||
void name_lookup_cleanup(void);
|
||||
|
||||
/* creates new thread for dns3 lookup. Only allows one lookup at a time. */
|
||||
void dns3_lookup(ToxWindow *self, Tox *m, const char *id_bin, const char *addr, const char *msg);
|
||||
int name_lookup(ToxWindow *self, Tox *m, const char *id_bin, const char *addr, const char *message);
|
||||
|
||||
#endif /* #define DNS_H */
|
||||
#endif /* NAME_LOOKUP */
|
||||
28
src/toxic.c
28
src/toxic.c
@ -58,6 +58,7 @@
|
||||
#include "message_queue.h"
|
||||
#include "execute.h"
|
||||
#include "term_mplex.h"
|
||||
#include "name_lookup.h"
|
||||
|
||||
#ifdef X11
|
||||
#include "xtra.h"
|
||||
@ -155,6 +156,7 @@ void exit_toxic_success(Tox *m)
|
||||
free_global_data();
|
||||
tox_kill(m);
|
||||
endwin();
|
||||
name_lookup_cleanup();
|
||||
|
||||
#ifdef X11
|
||||
/* We have to terminate xtra last coz reasons
|
||||
@ -904,7 +906,7 @@ static void print_usage(void)
|
||||
fprintf(stderr, " -o, --noconnect Do not connect to the DHT network\n");
|
||||
fprintf(stderr, " -p, --SOCKS5-proxy Use SOCKS5 proxy: Requires [IP] [port]\n");
|
||||
fprintf(stderr, " -P, --HTTP-proxy Use HTTP proxy: Requires [IP] [port]\n");
|
||||
fprintf(stderr, " -r, --dnslist Use specified DNSservers file\n");
|
||||
fprintf(stderr, " -r, --namelist Use specified name lookup server list\n");
|
||||
fprintf(stderr, " -t, --force-tcp Force toxic to use a TCP connection (use with proxies)\n");
|
||||
fprintf(stderr, " -T, --tcp-server Act as a TCP relay server: Requires [port]\n");
|
||||
fprintf(stderr, " -u, --unencrypt-data Unencrypt an encrypted data file\n");
|
||||
@ -932,7 +934,7 @@ static void parse_args(int argc, char *argv[])
|
||||
{"nodes", required_argument, 0, 'n'},
|
||||
{"help", no_argument, 0, 'h'},
|
||||
{"noconnect", no_argument, 0, 'o'},
|
||||
{"dnslist", required_argument, 0, 'r'},
|
||||
{"namelist", required_argument, 0, 'r'},
|
||||
{"force-tcp", no_argument, 0, 't'},
|
||||
{"tcp-server", required_argument, 0, 'T'},
|
||||
{"SOCKS5-proxy", required_argument, 0, 'p'},
|
||||
@ -1044,10 +1046,10 @@ static void parse_args(int argc, char *argv[])
|
||||
break;
|
||||
|
||||
case 'r':
|
||||
snprintf(arg_opts.dns_path, sizeof(arg_opts.dns_path), "%s", optarg);
|
||||
snprintf(arg_opts.nameserver_path, sizeof(arg_opts.nameserver_path), "%s", optarg);
|
||||
|
||||
if (!file_exists(arg_opts.dns_path))
|
||||
queue_init_message("DNSservers file not found");
|
||||
if (!file_exists(arg_opts.nameserver_path))
|
||||
queue_init_message("nameserver list not found");
|
||||
|
||||
break;
|
||||
|
||||
@ -1222,7 +1224,18 @@ int main(int argc, char **argv)
|
||||
exit_toxic_err("failed in main", FATALERR_MEMORY);
|
||||
|
||||
const char *p = arg_opts.config_path[0] ? arg_opts.config_path : NULL;
|
||||
int settings_err = settings_load(user_settings, p);
|
||||
|
||||
if (settings_load(user_settings, p) == -1)
|
||||
queue_init_message("Failed to load user settings");
|
||||
|
||||
int nameserver_ret = name_lookup_init();
|
||||
|
||||
if (nameserver_ret == -1)
|
||||
queue_init_message("curl failed to initialize; name lookup service is disabled.");
|
||||
else if (nameserver_ret == -2)
|
||||
queue_init_message("Name lookup server list could not be found.");
|
||||
else if (nameserver_ret == -3)
|
||||
queue_init_message("Name lookup server list does not contain any valid entries.");
|
||||
|
||||
#ifdef X11
|
||||
if (init_xtra(DnD_callback) == -1)
|
||||
@ -1271,9 +1284,6 @@ int main(int argc, char **argv)
|
||||
|
||||
init_notify(60, 3000);
|
||||
|
||||
if (settings_err == -1)
|
||||
queue_init_message("Failed to load user settings");
|
||||
|
||||
/* screen/tmux auto-away timer */
|
||||
if (init_mplex_away_timer(m) == -1)
|
||||
queue_init_message("Failed to init mplex auto-away.");
|
||||
|
||||
@ -90,7 +90,7 @@ struct arg_opts {
|
||||
bool encrypt_data;
|
||||
bool unencrypt_data;
|
||||
|
||||
char dns_path[MAX_STR_SIZE];
|
||||
char nameserver_path[MAX_STR_SIZE];
|
||||
char config_path[MAX_STR_SIZE];
|
||||
char nodes_path[MAX_STR_SIZE];
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user