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27 changed files with 1223 additions and 1929 deletions

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---
name: Bug report
about: Create a report to help us improve
title: ''
labels: ''
assignees: ''
---
**Describe the bug**
A clear and concise description of what the bug is.
**To Reproduce**
Steps to reproduce the behavior:
1. Run command
**Expected behavior**
A clear and concise description of what you expected to happen.
**Screenshots**
If applicable, add screenshots to help explain your problem.
**Additional context**
Add any other context about the problem here.

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@ -1,20 +0,0 @@
---
name: Feature request
about: Suggest an idea for this project
title: ''
labels: ''
assignees: ''
---
**Is your feature request related to a problem? Please describe.**
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
**Describe the solution you'd like**
A clear and concise description of what you want to happen.
**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.
**Additional context**
Add any other context or screenshots about the feature request here.

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name: Makefile CI
on:
push:
branches: [ "master" ]
pull_request:
branches: [ "master" ]
jobs:
build-linux-ubuntu:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- name: configure
run: ./configure
- name: Build Proxychains
run: make
- name: Run Proxychains
run: ./proxychains4 -v
- name: Run tests
run: ./src/proxychains -f dist/proxychains.conf on
# - name: Run tests
# run: ./src/proxychains -f dist/proxychains.conf curl -o /dev/null -v https://sme.sk
# - name: Run tests
# run: ./src/proxychains -f dist/proxychains.conf ping -c 1 sme.sk
build-macos:
runs-on: macos-latest
steps:
- uses: actions/checkout@v3
- name: configure
run: ./configure
- name: Build Proxychains
run: make
- name: Run Proxychains
run: ./proxychains4 -v
- name: Run tests
run: ./src/proxychains -f dist/proxychains.conf on
# - name: Run tests
# run: ./src/proxychains -f dist/proxychains.conf curl -o /dev/null -v https://sme.sk
# - name: Run tests
# run: ./src/proxychains -f dist/proxychains.conf ping -t 1 sme.sk

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# This workflow warns and then closes issues and PRs that have had no activity for a specified amount of time.
#
# You can adjust the behavior by modifying this file.
# For more information, see:
# https://github.com/actions/stale
name: Mark stale issues and pull requests
on:
schedule:
- cron: '24 3 * * *'
jobs:
stale:
runs-on: ubuntu-latest
permissions:
issues: write
pull-requests: write
steps:
- uses: actions/stale@v5
with:
days-before-stale: 90
days-before-close: 120
repo-token: ${{ secrets.GITHUB_TOKEN }}
stale-issue-message: 'Stale issue message'
stale-pr-message: 'Stale pull request message'
stale-issue-label: 'no-issue-activity'
exempt-issue-labels: 'docu,roadmap,bug,possible-feature'
stale-pr-label: 'no-pr-activity'
exempt-pr-labels: 'feature'

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@ -1,29 +0,0 @@
# This workflow executes several linters on changed files based on languages used in your code base whenever
# you push a code or open a pull request.
#
# You can adjust the behavior by modifying this file.
# For more information, see:
# https://github.com/github/super-linter
name: Lint Code Base
on:
push:
branches: [ "master" ]
pull_request:
branches: [ "master" ]
jobs:
run-lint:
runs-on: ubuntu-latest
steps:
- name: Checkout code
uses: actions/checkout@v3
with:
# Full git history is needed to get a proper list of changed files within `super-linter`
fetch-depth: 0
- name: Lint Code Base
uses: github/super-linter@v4
env:
VALIDATE_ALL_CODEBASE: false
DEFAULT_BRANCH: "master"
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

5
.gitignore vendored
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@ -4,11 +4,8 @@
*.lo *.lo
.deps/ .deps/
.libs/ .libs/
.*
src/*.d
# Autoconf stuff # Autoconf stuff
libtool libtool
config.* config.*
stamp-h stamp-h
proxychains4
*.dylib

15
AUTHORS
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@ -1,16 +1,5 @@
original code
N3E7CR34TUR3. N3E7CR34TUR3.
http://proxychains.sourceforge.net
netcreature@users.sourceforge.net
main.c, remote-dns, thread safety, bugfixes, build system, cleanups web site: proxychains.sourceforge.net
rofl0r. email: netcreature@users.sourceforge.net
https://github.com/rofl0r/proxychains
localnet, bugfixes, macos x support, bsd support, packaging
haad.
https://github.com/haad/proxychains
localnet-port, bugfixes
jianing yang.
https://github.com/jianingy/proxychains

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@ -1,27 +1,6 @@
ProxyChains version history (public releases) ProxyChains version history (public releases)
==================== ====================
ver 4.2
* Introduce BSD support make proxychains available on (NetBSD, FreeBSD ,OpenBSD and DragonFlyBSD)
* Update pkgsrc-wip proxychains package to 4.2.0 release and make easy to install and use
proxychains
-------------------------------------------------------------------------
ver 4.1
* Mac OS X support, create install script.
* thread-safe fixes by @rofl0r
-------------------------------------------------------------------------
ver 4.0
changed:
* Add a lot of fixes
* localnet-patch
* remote-dns
* thread-safe
-------------------------------------------------------------------------
ver 3.1 ver 3.1
changed: changed:

13
INSTALL Normal file
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@ -0,0 +1,13 @@
ProxyChains ver 3.1 Installation
=======================
If you have installed other ver of proxychains "make uninstall" before installing this distribution
unpack the .tar.gz , 'cd' to distribution directory and
run following commands (as root)
-------------------------------------
./configure
make
make install
-------------------------------------
that's all

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@ -8,84 +8,55 @@
prefix = /usr/local prefix = /usr/local
includedir = $(prefix)/include includedir = $(prefix)/include
libdir = $(prefix)/lib libdir = $(prefix)/lib
confdir = $(prefix)/etc
datadir = $(prefix)/share
exec_prefix = $(prefix) exec_prefix = $(prefix)
bindir = $(exec_prefix)/bin bindir = $(exec_prefix)/bin
zshcompdir = $(datadir)/zsh/site-functions
SRCS = $(sort $(wildcard src/*.c)) SRCS = $(sort $(wildcard src/*.c))
OBJS = $(SRCS:.c=.o) OBJS = $(SRCS:.c=.o)
LOBJS = src/core.o src/common.o src/libproxychains.o LOBJS = src/core.o src/libproxychains.o
DEPS = $(OBJS:.o=.d)
CCFLAGS = -MD -Wall -O2 -g -std=c99 -D_GNU_SOURCE -pipe -DTHREAD_SAFE -Werror CFLAGS += -Wall -O0 -g -std=c99 -D_GNU_SOURCE -pipe -DTHREAD_SAFE
LDFLAGS = -shared -fPIC LDFLAGS = -shared -fPIC -ldl -lpthread
INC = INC =
PIC = -fPIC PIC = -fPIC
AR = $(CROSS_COMPILE)ar AR = $(CROSS_COMPILE)ar
RANLIB = $(CROSS_COMPILE)ranlib RANLIB = $(CROSS_COMPILE)ranlib
LD_SET_SONAME = -Wl LDSO_PATHNAME = libproxychains4.so
INSTALL_FLAGS = -D -m
-include config.mak
SHARED_LIBS = $(LDSO_PATHNAME) SHARED_LIBS = $(LDSO_PATHNAME)
ALL_LIBS = $(SHARED_LIBS) ALL_LIBS = $(SHARED_LIBS)
PXCHAINS = proxychains4 PXCHAINS = proxychains4
ALL_TOOLS = $(PXCHAINS) ALL_TOOLS = $(PXCHAINS)
CCFLAGS+=$(USER_CFLAGS) $(OS_CFLAGS) -include config.mak
LDFLAGS+=$(USER_LDFLAGS) $(OS_LDFLAGS)
CXXFLAGS+=$(CCFLAGS) $(USER_CFLAGS) $(OS_CFLAGS)
CFLAGS_MAIN=-DLIB_DIR=\"$(libdir)\" -DINSTALL_PREFIX=\"$(prefix)\" -DDLL_NAME=\"$(LDSO_PATHNAME)\" -DSYSCONFDIR=\"$(confdir)\"
UNAME_S := $(shell uname -s) CFLAGS+=$(USER_CFLAGS)
ifeq ($(UNAME_S),Linux) CFLAGS_MAIN=-DLIB_DIR=\"$(libdir)\"
LDSO_PATHNAME = libproxychains.$(LDSO_SUFFIX)
LDSO_SUFFIX = so.4
endif
ifeq ($(UNAME_S),Darwin)
LDSO_PATHNAME = libproxychains4.$(LDSO_SUFFIX)
LDSO_SUFFIX = dylib
endif
all: $(ALL_LIBS) $(ALL_TOOLS) all: $(ALL_LIBS) $(ALL_TOOLS)
#install: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(DESTDIR)$(LDSO_PATHNAME) #install: $(ALL_LIBS:lib/%=$(DESTDIR)$(libdir)/%) $(DESTDIR)$(LDSO_PATHNAME)
install: install-exec install-config install-zsh-completion install:
install -D -m 755 $(ALL_TOOLS) $(bindir)/
install-exec: install -D -m 644 $(ALL_LIBS) $(libdir)/
install -d $(DESTDIR)/$(bindir) $(DESTDIR)/$(libdir) $(DESTDIR)/$(confdir) $(DESTDIR)/$(includedir) install -D -m 644 src/proxychains.conf $(prefix)/etc/
install $(INSTALL_FLAGS) 755 $(ALL_TOOLS) src/proxychains src/proxyresolv $(DESTDIR)/$(bindir)/
install $(INSTALL_FLAGS) 644 $(ALL_LIBS) $(DESTDIR)/$(libdir)/
install-config:
install -d $(DESTDIR)/$(confdir)
install $(INSTALL_FLAGS) 644 src/proxychains.conf $(DESTDIR)/$(confdir)/
install-zsh-completion:
install -d $(DESTDIR)/$(zshcompdir)
install $(INSTALL_FLAGS) 644 completions/zsh/_proxychains4 -t $(DESTDIR)/$(zshcompdir)
clean: clean:
rm -f $(ALL_LIBS) rm -f $(ALL_LIBS)
rm -f $(ALL_TOOLS) rm -f $(ALL_TOOLS)
rm -f $(OBJS) rm -f $(OBJS)
rm -f $(DEPS)
%.o: %.c %.o: %.c
$(CC) $(CCFLAGS) $(CFLAGS_MAIN) $(INC) $(PIC) -c -o $@ $< $(CC) $(CFLAGS) $(CFLAGS_MAIN) $(INC) $(PIC) -c -o $@ $<
$(LDSO_PATHNAME): $(LOBJS) $(LDSO_PATHNAME): $(LOBJS)
$(CC) $(LDFLAGS) $(LD_SET_SONAME)$(LDSO_PATHNAME) -o $@ $(LOBJS) $(CC) $(LDFLAGS) -Wl,-soname=$(LDSO_PATHNAME) -o $@ $(LOBJS)
$(ALL_TOOLS): $(OBJS) $(ALL_TOOLS): $(OBJS)
$(CC) src/main.o src/common.o -o $(PXCHAINS) $(CC) src/main.o -o $(PXCHAINS)
.PHONY: all clean install install-exec install-config install-zsh-completion
-include $(DEPS) .PHONY: all clean install

95
README Normal file
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ProxyChains ver 4.0 README
==========================
*********** ATTENTION ***********
this program works only on dynamically linked programs.
also both proxychains and the program to call must use
the same dynamic linker (i.e. same libc)
*********************************
This is Unix version only.
How to mess with sources - How to Install : read INSTALL !!!!!!
This program forces any tcp connection made by any given tcp client
to follow through proxy (or proxy chain). It is a kind of proxifier.
It acts like sockscap / permeo / eborder driver ( intercepts TCP calls )
It is FREE.
Changelog:
----------
Version (4.x) removes the dnsresolver script which required a dynamically
linked "dig" binary to be present with remote DNS lookup.
this speeds up any operation involving DNS, as the old script had to use TCP.
additionally it allows to use .onion urls when used with TOR.
also it removed the broken autoconf build system with a simple Makefile.
there's a ./configure script though for convenience.
it also adds support for a config file passed via command line switches/
environment variables.
Version (3.x) introduces support for DNS resolving through proxy
it supports SOCKS4, SOCKS5 and HTTP CONNECT proxy servers.
Auth-types: socks - "user/pass" , http - "basic".
When to use it ?
1) When the only way to get "outside" from your LAN is through proxy server.
2) To get out from behind restrictive firewall which filters outgoing ports.
3) To use two (or more) proxies in chain:
like: your_host <--> proxy1 <--> proxy2 <--> target_host
4) To "proxify" some program with no proxy support built-in (like telnet)
5) Access intranet from outside via proxy.
5) To use DNS behind proxy.
Some cool features:
* This program can mix different proxy types in the same chain
like: your_host <-->socks5 <--> http <--> socks4 <--> target_host
* Different chaining options supported
random order from the list ( user defined length of chain ).
exact order (as they appear in the list )
dynamic order (smart exclude dead proxies from chain)
* You can use it with any TCP client application, even network scanners
yes, yes - you can make portscan via proxy (or chained proxies)
for example with Nmap scanner by fyodor (www.insecire.org/nmap).
proxychains nmap -sT -PO -p 80 -iR (find some webservers through proxy)
* You can use it with servers, like squid, sendmail, or whatever.
* DNS resolving through proxy.
Configuration:
--------------
proxychains looks for config file in following order:
1) file listed in environment variable ${PROXYCHAINS_CONF_FILE} or
provided as a -f argument to proxychains script or binary.
2) ./proxychains.conf
3) $(HOME)/.proxychains/proxychains.conf
4) /etc/proxychains.conf **
**see more in /etc/proxychains.conf
Usage Example:
bash$ proxychains telnet targethost.com
in this example it will run telnet through proxy(or chained proxies)
specified by proxychains.conf
Usage Example:
bash$ proxychains -f /etc/proxychains-other.conf targethost2.com
in this example it will use different configuration file then proxychains.conf
to connect to targethost2.com host.
Usage Example:
bash$ proxyresolv targethost.com
in this example it will resolve targethost.com through proxy(or chained proxies)
specified by proxychains.conf

179
README.md
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@ -1,179 +0,0 @@
# ProxyChains ver. 4.3.0 README
![build-badge](https://github.com/haad/proxychains/actions/workflows/buildci.yml/badge.svg)
ProxyChains is a UNIX program, that hooks network-related libc functions
in dynamically linked programs via a preloaded DLL and redirects the
connections through SOCKS4a/5 or HTTP proxies.
WARNING: this program works only on dynamically linked programs.
also both proxychains and the program to call must use
the same dynamic linker (i.e. same libc)
## Known limitations of the current version
when a process forks, does a DNS lookup in the child, and then uses
the ip in the parent, the corresponding ip mapping will not be found,
this is because the fork can't write back into the parents mapping table.
IRSSI shows this behavior, so you have to pass the resolved ip address
to it. (you can use the proxyresolv script (requires "dig") to do so)
this means that you can't currently use tor onion urls for irssi.
to solve this issue, an external data store (file, pipe, ...) has to
manage the dns <-> ip mapping. of course there has to be proper locking.
shm_open, mkstemp, are possible candidates for a file based approach,
the other option is to spawn some kind of server process that manages the
map lookups. since connect() etc are hooked, this must not be a TCP server.
I am reluctant on doing this change, because the described behavior
seems pretty idiotic (doing a fork only for a DNS lookup), and irssi
is currently the only known affected program.
## Installation
### Using release version
*Proxychains-4.3.0* are available with pkgsrc to everyone using it on _Linux_,
_NetBSD_, _FreeBSD_, _OpenBSD_, _DragonFlyBSD_ or _Mac OS X_. You just need to install
pkgsrc-wip repository and run
make install
in a wip/proxychains directory.
You can find out more about pkgsrc on link:http://www.pkgsrc.org[pkgsrc] and about pkgsrc-wip on
link:https://pkgsrc.org/wip[Pkgsrc-wip homepage]
### Installing on Mac OS X with homebrew
You can install current proxychains on Mac OS X with an homebrew. You have to
download unofficial link:https://gist.github.com/3792521[homebrew formula] from
to your BREW_HOME by default /usr/local/Library/Formula/ and run
```
$ brew install proxychains
```
### Running Current Source code version
```
# needs a working C compiler, preferably gcc
./configure
make
sudo make install
```
## Changelog
*Version (4.x)* removes the dnsresolver script which required a dynamically
linked "dig" binary to be present with remote DNS lookup.
this speeds up any operation involving DNS, as the old script had to use TCP.
additionally it allows to use .onion urls when used with TOR.
also it removed the broken autoconf build system with a simple Makefile.
there's a ./configure script though for convenience.
it also adds support for a config file passed via command line switches/
environment variables.
*Version (3.x)* introduces support for DNS resolving through proxy
it supports SOCKS4, SOCKS5 and HTTP CONNECT proxy servers.
* Auth-types
** socks - "user/pass",
** http - "basic"
## When to use it
* When the only way to get "outside" from your LAN is through proxy server.
* To get out from behind restrictive firewall which filters outgoing ports.
* To use two (or more) proxies in chain:
```
like: your_host <--> proxy1 <--> proxy2 <--> target_host
```
* To "proxify" some program with no proxy support built-in (like telnet)
* Access intranet from outside via proxy.
* To use DNS behind proxy.
### Some cool features
* This program can mix different proxy types in the same chain
```
like: your_host <-->socks5 <--> http <--> socks4 <--> target_host
```
* Different chaining options supported
random order from the list ( user defined length of chain ).
exact order (as they appear in the list )
dynamic order (smart exclude dead proxies from chain)
* You can use it with any TCP client application, even network scanners
yes, yes - you can make portscan via proxy (or chained proxies)
for example with Nmap scanner by fyodor (www.insecure.org/nmap).
```
proxychains nmap -sT -PO -p 80 -iR (find some webservers through proxy)
```
* You can use it with servers, like squid, sendmail, or whatever.
* DNS resolving through proxy.
## Configuration
proxychains looks for configuration in the following order:
* SOCKS5 proxy host ip and port in environment variable ${PROXYCHAINS_SOCKS5_HOST} ${PROXYCHAINS_SOCKS5_PORT}
(if ${PROXYCHAINS_SOCKS5_PORT} is set, no further configuration will be searched. if ${PROXYCHAINS_SOCKS5_HOST} isn't set, host ip will become "127.0.0.1")
* file listed in environment variable ${PROXYCHAINS_CONF_FILE} or
provided as a -f argument to proxychains script or binary.
* ./proxychains.conf
* $(HOME)/.proxychains/proxychains.conf
* /etc/proxychains.conf
see more in */etc/proxychains.conf*
### Usage Example
```
$ proxychains4 telnet targethost.com
```
in this example it will run telnet through proxy(or chained proxies)
specified by *proxychains.conf*
### Usage Example
```
$ proxychains4 -f /etc/proxychains-other.conf targethost2.com
```
in this example it will use different configuration file then *proxychains.conf*
to connect to targethost2.com host.
### Usage Example
```
$ proxyresolv targethost.com
```
in this example it will resolve targethost.com through proxy(or chained proxies)
specified by *proxychains.conf*
### Usage Example:
```
$ ssh -fN -D 4321 some.example.com
$ PROXYCHAINS_SOCKS5_HOST=127.0.0.1 PROXYCHAINS_SOCKS5_PORT=4321 proxychains zsh
```
in this example, it will run a shell with all traffic proxied through
OpenSSH's "dynamic proxy" (SOCKS5 proxy) on localhost port 4321.
### Usage Example:
```
$ export PROXY_DNS_SERVER=8.8.8.8
$ proxychains4 telnet targethost.com
```
in this example, it will telnet to targethost.com using the 8.8.8.8
nameserver supplied by the user through the PROXY_DNS_SERVER

12
TODO
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@ -1,11 +1,9 @@
ProxyChains ver 4.0 TODO ProxyChains ver 3.1 TODO
=================== ===================
- hooks for reentrant dns functions, i.e. gethostbyaddr_r stable DNS resolver .... currently gnu dig is used, which is an ugly hack
- shadowsocks support #133 also it is required to link it with the same libc as proxychains
- proxy change according to attempts #156
hooks for reentrant dns functions, i.e. gethostbyaddr_r

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@ -1,3 +0,0 @@
#compdef proxychains4
_arguments -s -S '1: :{_command_names -e}' '*:: :_normal'

76
configure vendored
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@ -1,20 +1,6 @@
#!/bin/sh #!/bin/sh
prefix=/usr/local prefix=/usr/local
develflg=0
usage() {
echo "supported arguments"
echo "--prefix=/path default: $prefix"
echo "--exec_prefix=/path default: $prefix/bin"
echo "--bindir=/path default: $prefix/bin"
echo "--libdir=/path default: $prefix/lib"
echo "--includedir=/path default: $prefix/include"
echo "--sysconfdir=/path default: $prefix/etc"
echo "--devel default:no (set development mode)"
echo "--help : show this text"
exit 1
}
spliteq() { spliteq() {
arg=$1 arg=$1
@ -25,29 +11,14 @@ spliteq() {
parsearg() { parsearg() {
case "$1" in case "$1" in
--prefix=*) prefix=`spliteq $1`;; --prefix=*) prefix=$(spliteq "$1");;
--exec_prefix=*) exec_prefix=`spliteq $1`;; --exec_prefix=*) exec_prefix=`spliteq $1`;;
--bindir=*) bindir=`spliteq $1`;; --bindir=*) bindir=`spliteq $1`;;
--libdir=*) libdir=`spliteq $1`;; --libdir=*) libdir=`spliteq $1`;;
--includedir=*) includedir=`spliteq $1`;; --includedir=*) includedir=`spliteq $1`;;
--sysconfdir=*) sysconfdir=`spliteq $1`;;
--devel) develflg=1;;
--help) usage;;
esac esac
} }
ismac() {
uname -s | grep Darwin
}
isbsd() {
uname -s | grep BSD
}
islinux() {
uname -s | grep Linux
}
while true ; do while true ; do
case $1 in case $1 in
-*) parsearg "$1"; shift;; -*) parsearg "$1"; shift;;
@ -55,69 +26,34 @@ while true ; do
esac esac
done done
if [ -z "$exec_prefix" ] ; then if [ ! $exec_prefix ] ; then
exec_prefix=$prefix exec_prefix=$prefix
fi fi
if [ -z "$libdir" ] ; then if [ ! $libdir ] ; then
libdir=$prefix/lib libdir=$prefix/lib
fi fi
if [ -z "$includedir" ] ; then if [ ! $includedir ] ; then
includedir=$prefix/include includedir=$prefix/include
fi fi
if [ -z "$sysconfdir" ] ; then if [ ! $bindir ] ; then
sysconfdir=$prefix/etc
fi
if [ -z "$bindir" ] ; then
bindir=$exec_prefix/bin bindir=$exec_prefix/bin
fi fi
if [ -z "$CC" ] ; then if [ ! $CC ] ; then
CC=cc CC=cc
fi fi
if [ $develflg -eq 1 ]; then
CFLAGS="-Wextra -Wunused -Wuninitialized -Wconversion -fno-common -g -O0 -DDEBUG"
fi
echo CC?=$CC>config.mak echo CC?=$CC>config.mak
[ -z "$CPPFLAGS" ] || echo CPPFLAGS?=$CPPFLAGS>>config.mak [ -z "$CPPFLAGS" ] || echo CPPFLAGS?=$CPPFLAGS>>config.mak
[ -z "$CFLAGS" ] || echo USER_CFLAGS?=$CFLAGS>>config.mak [ -z "$CFLAGS" ] || echo USER_CFLAGS?=$CFLAGS>>config.mak
[ -z "$LDFLAGS" ] || echo USER_LDFLAGS?=$LDFLAGS>>config.mak
echo prefix=$prefix>>config.mak echo prefix=$prefix>>config.mak
echo exec_prefix=$exec_prefix>>config.mak echo exec_prefix=$exec_prefix>>config.mak
echo bindir=$bindir>>config.mak echo bindir=$bindir>>config.mak
echo libdir=$libdir>>config.mak echo libdir=$libdir>>config.mak
echo includedir=$includedir>>config.mak echo includedir=$includedir>>config.mak
echo sysconfdir=$sysconfdir>>config.mak
if ismac ; then
arch=`uname -m`
echo LDSO_SUFFIX=dylib>>config.mak
echo OS_CFLAGS+=-DIS_MAC=1 -arch $arch >>config.mak
echo OS_LDFLAGS+=-arch $arch -lpthread -ldl -Wl,>>config.mak
echo LD_SET_SONAME=-Wl,-install_name,>>config.mak
echo LDSO_SUFFIX=dylib>>config.mak
echo INSTALL_FLAGS=-m>>config.mak
fi
if islinux ; then
echo OS_LDFLAGS=-pthread -ldl -Wl,--no-as-needed>>config.mak
echo LD_SET_SONAME=-Wl,-soname= >>config.mak
fi
if isbsd ; then
#echo OS_LDFLAGS=
#echo OS_CFLAGS
echo INSTALL_FLAGS=-m>>config.mak
echo LD_SET_SONAME=-Wl,-rpath,$libdir -install_name,>>config.mak
fi
echo done, now run make \&\& make install echo done, now run make \&\& make install

13
dist/proxychains.conf vendored
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@ -1,13 +0,0 @@
strict_chain
#proxy_dns
#remote_dns_subnet 224
tcp_read_time_out 15000
tcp_connect_time_out 8000
localnet 127.0.0.0/255.0.0.0
[ProxyList]
http 162.243.184.252 8585
#socks4 184.170.245.148 4145
#raw 162.243.184.252 8585

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@ -1,13 +1,13 @@
Begin3 Begin3
Title: ProxyChains Title: ProxyChains
Version: 4.3 Version: 3.0
Entered-date: Entered-date:
Description: Description:
Keywords: Keywords:
Author: <N37CR347UR3> Author: <N37CR347UR3>
Maintained-by: <haad@netbsd.org> Maintained-by: <NetCreature>
Primary-site: Primary-site:
Home-page: https://github.com/haad/proxychains Home-page: http://proxychains.sourceforge.net
Original-site: Original-site:
Platforms: Linux and other Unices Platforms: Linux and other Unices
Copying-policy: GNU Public License Copying-policy: GNU Public License

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@ -1,54 +0,0 @@
#include "common.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
static int check_path(char *path) {
if(!path)
return 0;
return access(path, R_OK) != -1;
}
char *get_config_path(char* default_path, char* pbuf, size_t bufsize) {
char buf[512];
// top priority: user defined path
char *path = default_path;
if(check_path(path))
return path;
if (!pbuf)
goto err;
// priority 1: env var PROXYCHAINS_CONF_FILE
path = getenv(PROXYCHAINS_CONF_FILE_ENV_VAR);
if(check_path(path))
return path;
// priority 2; proxychains conf in actual dir
path = getcwd(buf, sizeof(buf));
snprintf(pbuf, bufsize, "%s/%s", path, PROXYCHAINS_CONF_FILE);
path = pbuf;
if(check_path(path))
return path;
// priority 3; $HOME/.proxychains/proxychains.conf
path = getenv("HOME");
snprintf(pbuf, bufsize, "%s/.proxychains/%s", path, PROXYCHAINS_CONF_FILE);
path = pbuf;
if(check_path(path))
return path;
// priority 4: $SYSCONFDIR/proxychains.conf
path = SYSCONFDIR "/" PROXYCHAINS_CONF_FILE;
if(check_path(path))
return path;
// priority 5: /etc/proxychains.conf
path = "/etc/" PROXYCHAINS_CONF_FILE;
if(check_path(path))
return path;
err:
perror("couldn't find configuration file");
exit(1);
}

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@ -1,15 +1,4 @@
#define PROXYCHAINS_CONF_FILE_ENV_VAR "PROXYCHAINS_CONF_FILE" #define PROXYCHAINS_CONF_FILE_ENV_VAR "PROXYCHAINS_CONF_FILE"
#define PROXYCHAINS_QUIET_MODE_ENV_VAR "PROXYCHAINS_QUIET_MODE" #define PROXYCHAINS_QUIET_MODE_ENV_VAR "PROXYCHAINS_QUIET_MODE"
#define PROXYCHAINS_CONF_FILE "proxychains.conf" #define PROXYCHAINS_CONF_FILE "proxychains.conf"
#define PROXYCHAINS_SOCKS5_PORT_ENV_VAR "PROXYCHAINS_SOCKS5_PORT"
#define PROXYCHAINS_SOCKS5_HOST_ENV_VAR "PROXYCHAINS_SOCKS5_HOST"
#define PROXYCHAINS_DNS_ENV_VAR "PROXYCHAINS_DNS"
#define LOG_PREFIX "[proxychains] " #define LOG_PREFIX "[proxychains] "
#define PROXYCHAINS_VERSION_MAJOR 4
#define PROXYCHAINS_VERSION_MINOR 3
#define PROXYCHAINS_VERSION_BUGFIX 0
#include <stddef.h>
char *get_config_path(char* default_path, char* pbuf, size_t bufsize);

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@ -14,8 +14,6 @@
* (at your option) any later version. * * (at your option) any later version. *
* * * *
***************************************************************************/ ***************************************************************************/
#include <sys/types.h>
#include <sys/cdefs.h>
#include <stdio.h> #include <stdio.h>
#include <unistd.h> #include <unistd.h>
@ -27,6 +25,7 @@
#include <sys/utsname.h> #include <sys/utsname.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <sys/poll.h> #include <sys/poll.h>
#include <sys/wait.h> #include <sys/wait.h>
@ -34,16 +33,10 @@
#include <time.h> #include <time.h>
#include <sys/time.h> #include <sys/time.h>
#include <stdarg.h> #include <stdarg.h>
#include <assert.h>
#ifdef THREAD_SAFE #ifdef THREAD_SAFE
#include <pthread.h>
pthread_mutex_t internal_ips_lock; pthread_mutex_t internal_ips_lock;
#endif
#ifdef __APPLE__
pthread_mutex_t internal_getsrvbyname_lock;
#endif /* __APPLE__ */
#endif /* THREAD_SAFE */
#include "core.h" #include "core.h"
#include "common.h" #include "common.h"
@ -51,10 +44,10 @@ pthread_mutex_t internal_getsrvbyname_lock;
extern int tcp_read_time_out; extern int tcp_read_time_out;
extern int tcp_connect_time_out; extern int tcp_connect_time_out;
extern int proxychains_quiet_mode; extern int proxychains_quiet_mode;
extern unsigned int remote_dns_subnet;
internal_ip_lookup_table internal_ips = {0, 0, NULL}; internal_ip_lookup_table internal_ips = {0, 0, NULL};
uint32_t dalias_hash(char* s0) { uint32_t dalias_hash(char* s0) {
unsigned char* s = (void*) s0; unsigned char* s = (void*) s0;
uint_fast32_t h = 0; uint_fast32_t h = 0;
@ -68,27 +61,30 @@ uint32_t dalias_hash(char *s0) {
uint32_t index_from_internal_ip(ip_type internalip) { uint32_t index_from_internal_ip(ip_type internalip) {
ip_type tmp = internalip; ip_type tmp = internalip;
uint32_t ret; uint32_t ret;
ret = (uint32_t) (tmp.octet[3] + (tmp.octet[2] << 8) + (tmp.octet[1] << 16)); ret = tmp.octet[3] + (tmp.octet[2] << 8) + (tmp.octet[1] << 16);
ret -= 1; ret -= 1;
return ret; return ret;
} }
char* string_from_internal_ip(ip_type internalip) { char* string_from_internal_ip(ip_type internalip) {
char* res = NULL; char* res = NULL;
#ifdef THREAD_SAFE
pthread_mutex_lock(&internal_ips_lock);
#endif
uint32_t index = index_from_internal_ip(internalip); uint32_t index = index_from_internal_ip(internalip);
MUTEX_LOCK(&internal_ips_lock);
if(index < internal_ips.counter) if(index < internal_ips.counter)
res = internal_ips.list[index]->string; res = internal_ips.list[index]->string;
MUTEX_UNLOCK(&internal_ips_lock); #ifdef THREAD_SAFE
pthread_mutex_unlock(&internal_ips_lock);
#endif
return res; return res;
} }
in_addr_t make_internal_ip(uint32_t index) { in_addr_t make_internal_ip(uint32_t index) {
ip_type ret; ip_type ret;
index++; // so we can start at .0.0.1 index++; // so we can start at .0.0.1
if(index > 0xFFFFFF) if(index > 0xFFFFFF) return (in_addr_t) -1;
return (in_addr_t) - 1; ret.octet[0] = 224;
ret.octet[0] = remote_dns_subnet & 0xFF;
ret.octet[1] = (index & 0xFF0000) >> 16; ret.octet[1] = (index & 0xFF0000) >> 16;
ret.octet[2] = (index & 0xFF00) >> 8; ret.octet[2] = (index & 0xFF00) >> 8;
ret.octet[3] = index & 0xFF; ret.octet[3] = index & 0xFF;
@ -112,7 +108,7 @@ static int poll_retry(struct pollfd *fds, nfds_t nfsd, int timeout)
//printf("Retry %d\n", time_remain); //printf("Retry %d\n", time_remain);
ret = poll(fds, nfsd, time_remain); ret = poll(fds, nfsd, time_remain);
gettimeofday(&tv, NULL); gettimeofday(&tv, NULL);
time_elapsed = ((int)(tv.tv_sec - start_time.tv_sec) * 1000 + (int)(tv.tv_usec - start_time.tv_usec) / 1000); time_elapsed = ((tv.tv_sec - start_time.tv_sec) * 1000 + (tv.tv_usec - start_time.tv_usec) / 1000);
//printf("Time elapsed %d\n", time_elapsed); //printf("Time elapsed %d\n", time_elapsed);
time_remain = timeout - time_elapsed; time_remain = timeout - time_elapsed;
} while (ret == -1 && errno == EINTR && time_remain > 0); } while (ret == -1 && errno == EINTR && time_remain > 0);
@ -123,13 +119,13 @@ static int poll_retry(struct pollfd *fds, nfds_t nfsd, int timeout)
} }
static void encode_base_64(char *src, char *dest, int max_len) { static void encode_base_64(char* src,char* dest,int max_len)
int n, i; {
size_t l; int n,l,i;
l=strlen(src); l=strlen(src);
max_len=(max_len-1)/4; max_len=(max_len-1)/4;
for(i = 0; i < max_len; i++, src += 3, l -= 3) { for ( i=0;i<max_len;i++,src+=3,l-=3)
{
switch (l) { switch (l) {
case 0: case 0:
break; break;
@ -154,29 +150,35 @@ static void encode_base_64(char *src, char *dest, int max_len) {
*dest++=base64[(n >> 6) & 077]; *dest++=base64[(n >> 6) & 077];
*dest++=base64[n & 077]; *dest++=base64[n & 077];
} }
if(l < 3) if (l<3) break;
break;
} }
*dest++=0; *dest++=0;
} }
void proxychains_write_log(char *str, ...) { #define LOG_BUFF 1024*20
char buff[1024*20];
int proxychains_write_log(char *str,...)
{
char buff[LOG_BUFF];
va_list arglist; va_list arglist;
FILE * log_file;
log_file=stderr;
if (!proxychains_quiet_mode) { if (!proxychains_quiet_mode) {
va_start(arglist,str); va_start(arglist,str);
vsnprintf(buff, sizeof(buff), str, arglist); vsprintf(buff,str,arglist);
va_end(arglist); va_end(arglist);
fprintf(stderr, "%s", buff); fprintf(log_file,"%s",buff);
fflush(stderr); fflush(log_file);
} }
return EXIT_SUCCESS;
} }
static size_t write_n_bytes(int fd, char *buff, size_t size) { static int write_n_bytes(int fd,char *buff,size_t size)
size_t i = 0; {
int i=0;
size_t wrote=0; size_t wrote=0;
for(;;) { for(;;) {
i = (size_t) write(fd, &buff[wrote], size - wrote); i = write(fd,&buff[wrote],size-wrote);
if(i<=0) if(i<=0)
return i; return i;
wrote += i; wrote += i;
@ -185,7 +187,8 @@ static size_t write_n_bytes(int fd, char *buff, size_t size) {
} }
} }
static size_t read_n_bytes(int fd, char *buff, size_t size) { static int read_n_bytes(int fd,char *buff, size_t size)
{
int ready; int ready;
size_t i; size_t i;
struct pollfd pfd[1]; struct pollfd pfd[1];
@ -196,12 +199,13 @@ static size_t read_n_bytes(int fd, char *buff, size_t size) {
pfd[0].revents = 0; pfd[0].revents = 0;
ready = poll_retry(pfd, 1, tcp_read_time_out); ready = poll_retry(pfd, 1, tcp_read_time_out);
if(ready != 1 || !(pfd[0].revents&POLLIN) || 1 != read(fd,&buff[i],1)) if(ready != 1 || !(pfd[0].revents&POLLIN) || 1 != read(fd,&buff[i],1))
return 0; return -1;
} }
return size; return (int) size;
} }
static int timed_connect(int sock, const struct sockaddr *addr, socklen_t len) { static int timed_connect(int sock, const struct sockaddr *addr, socklen_t len)
{
int ret, value; int ret, value;
socklen_t value_len; socklen_t value_len;
struct pollfd pfd[1]; struct pollfd pfd[1];
@ -210,15 +214,23 @@ static int timed_connect(int sock, const struct sockaddr *addr, socklen_t len) {
pfd[0].events=POLLOUT; pfd[0].events=POLLOUT;
fcntl(sock, F_SETFL, O_NONBLOCK); fcntl(sock, F_SETFL, O_NONBLOCK);
ret = true_connect(sock, addr, len); ret = true_connect(sock, addr, len);
PDEBUG("\nconnect ret=%d\n", ret); #ifdef DEBUG
if(ret == -1) perror("true_connect");
printf("\nconnect ret=%d\n",ret);
fflush(stdout);
#endif
if(ret==-1 && errno==EINPROGRESS) { if(ret==-1 && errno==EINPROGRESS) {
ret=poll_retry(pfd,1,tcp_connect_time_out); ret=poll_retry(pfd,1,tcp_connect_time_out);
PDEBUG("\npoll ret=%d\n", ret); #ifdef DEBUG
printf("\npoll ret=%d\n",ret);fflush(stdout);
#endif
if(ret == 1) { if(ret == 1) {
value_len=sizeof(socklen_t); value_len=sizeof(socklen_t);
getsockopt(sock,SOL_SOCKET,SO_ERROR,&value,&value_len) ; getsockopt(sock,SOL_SOCKET,SO_ERROR,&value,&value_len) ;
PDEBUG("\nvalue=%d\n", value); #ifdef DEBUG
printf("\nvalue=%d\n",value);fflush(stdout);
#endif
if(!value) if(!value)
ret=0; ret=0;
else else
@ -227,10 +239,6 @@ static int timed_connect(int sock, const struct sockaddr *addr, socklen_t len) {
ret=-1; ret=-1;
} }
} else { } else {
#ifdef DEBUG
if(ret == -1)
perror("true_connect");
#endif
if (ret != 0) if (ret != 0)
ret=-1; ret=-1;
} }
@ -241,29 +249,24 @@ static int timed_connect(int sock, const struct sockaddr *addr, socklen_t len) {
#define INVALID_INDEX 0xFFFFFFFFU #define INVALID_INDEX 0xFFFFFFFFU
#define HTTP_AUTH_MAX ((0xFF * 2) + 1 + 1) static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt,char *user,char *pass)
{
static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt, char *user, char *pass) { #ifdef DEBUG
PDEBUG("tunnel_to()\n");
#endif
char* dns_name = NULL; char* dns_name = NULL;
size_t dns_len = 0; size_t dns_len = 0;
PDEBUG("tunnel_to()\n");
// we use ip addresses with 224.* to lookup their dns name in our table, to allow remote DNS resolution // we use ip addresses with 224.* to lookup their dns name in our table, to allow remote DNS resolution
// the range 224-255.* is reserved, and it won't go outside (unless the app does some other stuff with // the range 224-255.* is reserved, and it won't go outside (unless the app does some other stuff with
// the results returned from gethostbyname et al.) // the results returned from gethostbyname et al.)
// the hardcoded number 224 can now be changed using the config option remote_dns_subnet to i.e. 127 if(ip.octet[0] == 224) {
if(ip.octet[0] == remote_dns_subnet) {
dns_name = string_from_internal_ip(ip); dns_name = string_from_internal_ip(ip);
if(!dns_name) if(!dns_name) goto err;
goto err;
dns_len = strlen(dns_name); dns_len = strlen(dns_name);
if(!dns_len) if(!dns_len) goto err;
goto err;
} }
PDEBUG("host dns %s\n", dns_name ? dns_name : "<NULL>");
size_t ulen = strlen(user); size_t ulen = strlen(user);
size_t passlen = strlen(pass); size_t passlen = strlen(pass);
@ -272,26 +275,20 @@ static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt, c
goto err; goto err;
} }
size_t len; int len;
unsigned char buff[BUFF_SIZE]; unsigned char buff[BUFF_SIZE];
char ip_buf[16];
//memset (buff, 0, sizeof(buff)); //memset (buff, 0, sizeof(buff));
switch(pt) { switch(pt) {
case RAW_TYPE: {
return SUCCESS;
}
break;
case HTTP_TYPE: { case HTTP_TYPE: {
if(!dns_len) { if(!dns_len)
inet_ntop(AF_INET, &ip.octet[0], ip_buf, sizeof(ip_buf)); dns_name = inet_ntoa( * (struct in_addr *) &ip.as_int);
dns_name = ip_buf;
}
snprintf((char *) buff, sizeof(buff), "CONNECT %s:%d HTTP/1.0\r\n", dns_name, snprintf((char*)buff, sizeof(buff), "CONNECT %s:%d HTTP/1.0\r\n", dns_name, ntohs(port));
ntohs(port));
if(user[0]) { if (user[0])
{
#define HTTP_AUTH_MAX ((0xFF * 2) + 1 + 1)
// 2 * 0xff: username and pass, plus 1 for ':' and 1 for zero terminator. // 2 * 0xff: username and pass, plus 1 for ':' and 1 for zero terminator.
char src[HTTP_AUTH_MAX]; char src[HTTP_AUTH_MAX];
char dst[(4 * HTTP_AUTH_MAX)]; char dst[(4 * HTTP_AUTH_MAX)];
@ -305,12 +302,13 @@ static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt, c
strcat((char*)buff,"Proxy-Authorization: Basic "); strcat((char*)buff,"Proxy-Authorization: Basic ");
strcat((char*)buff, dst); strcat((char*)buff, dst);
strcat((char*)buff, "\r\n\r\n"); strcat((char*)buff, "\r\n\r\n");
} else }
else
strcat((char*)buff, "\r\n"); strcat((char*)buff, "\r\n");
len = strlen((char*)buff); len = strlen((char*)buff);
if(len != (size_t) send(sock, buff, len, 0)) if(len != send(sock, buff, len, 0))
goto err; goto err;
len = 0 ; len = 0 ;
@ -322,12 +320,17 @@ static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt, c
goto err; goto err;
if (len > 4 && if (len > 4 &&
buff[len-1]=='\n' && buff[len-1]=='\n' &&
buff[len - 2] == '\r' && buff[len - 3] == '\n' && buff[len - 4] == '\r') buff[len-2]=='\r' &&
buff[len-3]=='\n' &&
buff[len-4]=='\r' )
break; break;
} }
// if not ok (200) or response greather than BUFF_SIZE return BLOCKED; // if not ok (200) or response greather than BUFF_SIZE return BLOCKED;
if(len == BUFF_SIZE || !(buff[9] == '2' && buff[10] == '0' && buff[11] == '0')) if (len == BUFF_SIZE ||
!( buff[9] =='2' &&
buff[10]=='0' &&
buff[11]=='0' ))
return BLOCKED; return BLOCKED;
return SUCCESS; return SUCCESS;
@ -378,7 +381,8 @@ static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt, c
buff[3]=2; /// auth method -> username / password buff[3]=2; /// auth method -> username / password
if(4!=write_n_bytes(sock, (char*)buff, 4)) if(4!=write_n_bytes(sock, (char*)buff, 4))
goto err; goto err;
} else { }
else {
buff[0]=5; //version buff[0]=5; //version
buff[1]=1; //nomber of methods buff[1]=1; //nomber of methods
buff[2]=0; // no auth method buff[2]=0; // no auth method
@ -399,20 +403,19 @@ static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt, c
if (buff[1] == 2) { if (buff[1] == 2) {
// authentication // authentication
char in[2]; char in[2];
char out[515]; char out[515]; char* cur=out;
char *cur = out;
int c; int c;
*cur++=1; // version *cur++=1; // version
c = ulen & 0xFF; c = ulen & 0xFF;
*cur++ = (char)c; *cur++ = c;
memcpy(cur, user, (size_t)c); memcpy(cur, user, c);
cur += c; cur += c;
c = passlen & 0xFF; c = passlen & 0xFF;
*cur++ = (char)c; *cur++ = c;
memcpy(cur, pass, (size_t)c); memcpy(cur, pass, c);
cur += c; cur += c;
if((size_t)(cur - out) != write_n_bytes(sock, out, (size_t) (cur - out))) if((cur-out) != write_n_bytes(sock, out, cur-out))
goto err; goto err;
@ -425,7 +428,7 @@ static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt, c
return BLOCKED; return BLOCKED;
} }
} }
size_t buff_iter = 0; int buff_iter = 0;
buff[buff_iter++] = 5; // version buff[buff_iter++] = 5; // version
buff[buff_iter++] = 1; // connect buff[buff_iter++] = 1; // connect
buff[buff_iter++] = 0; // reserved buff[buff_iter++] = 0; // reserved
@ -456,14 +459,9 @@ static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt, c
switch (buff[3]) { switch (buff[3]) {
case 1: case 1: len = 4; break;
len = 4; case 4: len = 16; break;
break; case 3: len = 0;
case 4:
len = 16;
break;
case 3:
len = 0;
if(1 != read_n_bytes(sock, (char*) &len, 1)) if(1 != read_n_bytes(sock, (char*) &len, 1))
goto err; goto err;
break; break;
@ -488,17 +486,18 @@ static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt, c
#define ST "Strict chain" #define ST "Strict chain"
#define RT "Random chain" #define RT "Random chain"
static int start_chain(int *fd, proxy_data * pd, char *begin_mark) { static int start_chain(int *fd, proxy_data *pd, char* begin_mark)
{
struct sockaddr_in addr; struct sockaddr_in addr;
char ip_buf[16];
*fd=socket(PF_INET,SOCK_STREAM,0); *fd=socket(PF_INET,SOCK_STREAM,0);
if(*fd==-1) if(*fd==-1)
goto error; goto error;
inet_ntop(AF_INET, &pd->ip.octet[0], ip_buf, sizeof(ip_buf));
proxychains_write_log(LOG_PREFIX "%s "TP" %s:%d ", proxychains_write_log(LOG_PREFIX "%s "TP" %s:%d ",
begin_mark, ip_buf, htons(pd->port)); begin_mark,
inet_ntoa(*(struct in_addr*)&pd->ip),
htons(pd->port));
pd->ps=PLAY_STATE; pd->ps=PLAY_STATE;
memset(&addr, 0, sizeof(addr)); memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET; addr.sin_family = AF_INET;
@ -518,31 +517,19 @@ static int start_chain(int *fd, proxy_data * pd, char *begin_mark) {
return SOCKET_ERROR; return SOCKET_ERROR;
} }
unsigned int get_rand_int(unsigned int range){ static proxy_data * select_proxy(select_type how,
static FILE *fp; proxy_data *pd, unsigned int proxy_count, unsigned int *offset)
unsigned int randval; {
if (!fp) {
fp = fopen("/dev/urandom", "r");
}
if(fread(&randval, sizeof(randval), 1, fp)) {
return (randval % range);
} else {
srand((unsigned int)time(NULL));
return ((unsigned int)rand() % range);
}
}
static proxy_data *select_proxy(select_type how, proxy_data * pd, unsigned int proxy_count, unsigned int *offset) {
unsigned int i=0, k=0; unsigned int i=0, k=0;
if(*offset >= proxy_count) if(*offset >= proxy_count)
return NULL; return NULL;
switch(how) { switch(how) {
case RANDOMLY: case RANDOMLY:
srand(time(NULL));
do { do {
k++; k++;
i = 0 + get_rand_int(proxy_count); i = 0 + (unsigned int) (proxy_count * 1.0 * rand()/
(RAND_MAX + 1.0));
} while (pd[i].ps != PLAY_STATE && k < proxy_count*100 ); } while (pd[i].ps != PLAY_STATE && k < proxy_count*100 );
break; break;
case FIFOLY: case FIFOLY:
@ -561,14 +548,16 @@ static proxy_data *select_proxy(select_type how, proxy_data * pd, unsigned int p
} }
static void release_all(proxy_data * pd, unsigned int proxy_count) { static void release_all(proxy_data *pd, unsigned int proxy_count)
{
unsigned int i; unsigned int i;
for(i=0; i<proxy_count; i++) for(i=0; i<proxy_count; i++)
pd[i].ps = PLAY_STATE; pd[i].ps = PLAY_STATE;
return; return;
} }
static void release_busy(proxy_data * pd, unsigned int proxy_count) { static void release_busy(proxy_data *pd, unsigned int proxy_count)
{
unsigned int i; unsigned int i;
for(i=0; i<proxy_count; i++) for(i=0; i<proxy_count; i++)
if(pd[i].ps == BUSY_STATE) if(pd[i].ps == BUSY_STATE)
@ -576,8 +565,10 @@ static void release_busy(proxy_data * pd, unsigned int proxy_count) {
return; return;
} }
static unsigned int calc_alive(proxy_data * pd, unsigned int proxy_count) { static unsigned int calc_alive(proxy_data *pd, unsigned int proxy_count)
unsigned int i, alive_count = 0; {
unsigned int i;
int alive_count=0;
release_busy(pd, proxy_count); release_busy(pd, proxy_count);
for(i=0; i<proxy_count; i++) for(i=0; i<proxy_count; i++)
if(pd[i].ps == PLAY_STATE) if(pd[i].ps == PLAY_STATE)
@ -585,25 +576,28 @@ static unsigned int calc_alive(proxy_data * pd, unsigned int proxy_count) {
return alive_count; return alive_count;
} }
static int chain_step(int ns, proxy_data * pfrom, proxy_data * pto) {
static int chain_step(int ns, proxy_data *pfrom, proxy_data *pto)
{
int retcode=-1; int retcode=-1;
char* hostname; char* hostname;
char ip_buf[16]; #ifdef DEBUG
PDEBUG("chain_step()\n"); PDEBUG("chain_step()\n");
#endif
if(pto->ip.octet[0] == remote_dns_subnet) { if(pto->ip.octet[0] == 224) {
hostname = string_from_internal_ip(pto->ip); hostname = string_from_internal_ip(pto->ip);
if(!hostname) if(!hostname) goto usenumericip;
goto usenumericip;
} else { } else {
usenumericip: usenumericip:
inet_ntop(AF_INET, &pto->ip.octet[0], ip_buf, sizeof(ip_buf)); hostname = inet_ntoa(*(struct in_addr*)&pto->ip);
hostname = ip_buf;
} }
proxychains_write_log(TP " %s:%d ", hostname, htons(pto->port)); proxychains_write_log(TP" %s:%d ",
retcode = tunnel_to(ns, pto->ip, pto->port, pfrom->pt, pfrom->user, pfrom->pass); hostname,
htons(pto->port));
retcode =
tunnel_to(ns, pto->ip, pto->port, pfrom->pt, pfrom->user,
pfrom->pass);
switch(retcode) { switch(retcode) {
case SUCCESS: case SUCCESS:
pto->ps=BUSY_STATE; pto->ps=BUSY_STATE;
@ -615,7 +609,7 @@ static int chain_step(int ns, proxy_data * pfrom, proxy_data * pto) {
break; break;
case SOCKET_ERROR: case SOCKET_ERROR:
pto->ps=DOWN_STATE; pto->ps=DOWN_STATE;
proxychains_write_log("<--socket error or timeout!\n"); proxychains_write_log("<--timeout\n");
close(ns); close(ns);
break; break;
} }
@ -624,7 +618,8 @@ static int chain_step(int ns, proxy_data * pfrom, proxy_data * pto) {
int connect_proxy_chain( int sock, ip_type target_ip, int connect_proxy_chain( int sock, ip_type target_ip,
unsigned short target_port, proxy_data *pd, unsigned short target_port, proxy_data *pd,
unsigned int proxy_count, chain_type ct, unsigned int max_chain) { unsigned int proxy_count, chain_type ct, unsigned int max_chain )
{
proxy_data p4; proxy_data p4;
proxy_data *p1,*p2,*p3; proxy_data *p1,*p2,*p3;
int ns=-1; int ns=-1;
@ -633,14 +628,15 @@ int connect_proxy_chain(int sock, ip_type target_ip,
unsigned int curr_len=0; unsigned int curr_len=0;
p3=&p4; p3=&p4;
#ifdef DEBUG
PDEBUG("connect_proxy_chain\n"); PDEBUG("connect_proxy_chain\n");
#endif
again: again:
switch(ct) { switch(ct) {
case DYNAMIC_TYPE: case DYNAMIC_TYPE:
calc_alive(pd, proxy_count); alive_count = calc_alive(pd,proxy_count);
offset = 0; offset = 0;
do { do {
if(!(p1=select_proxy(FIFOLY,pd,proxy_count,&offset))) if(!(p1=select_proxy(FIFOLY,pd,proxy_count,&offset)))
@ -651,7 +647,9 @@ int connect_proxy_chain(int sock, ip_type target_ip,
if(!p2) if(!p2)
break; break;
if(SUCCESS!=chain_step(ns,p1,p2)) { if(SUCCESS!=chain_step(ns,p1,p2)) {
#ifdef DEBUG
PDEBUG("GOTO AGAIN 1\n"); PDEBUG("GOTO AGAIN 1\n");
#endif
goto again; goto again;
} }
p1=p2; p1=p2;
@ -664,21 +662,27 @@ int connect_proxy_chain(int sock, ip_type target_ip,
break; break;
case STRICT_TYPE: case STRICT_TYPE:
calc_alive(pd, proxy_count); alive_count = calc_alive(pd, proxy_count);
offset = 0; offset = 0;
if(!(p1=select_proxy(FIFOLY, pd, proxy_count, &offset))) { if(!(p1=select_proxy(FIFOLY, pd, proxy_count, &offset))) {
#ifdef DEBUG
PDEBUG("select_proxy failed\n"); PDEBUG("select_proxy failed\n");
#endif
goto error_strict; goto error_strict;
} }
if(SUCCESS!=start_chain(&ns, p1, ST)) { if(SUCCESS!=start_chain(&ns, p1, ST)) {
#ifdef DEBUG
PDEBUG("start_chain failed\n"); PDEBUG("start_chain failed\n");
#endif
goto error_strict; goto error_strict;
} }
while(offset < proxy_count) { while(offset < proxy_count) {
if(!(p2 = select_proxy(FIFOLY, pd, proxy_count, &offset))) if(!(p2 = select_proxy(FIFOLY, pd, proxy_count, &offset)))
break; break;
if(SUCCESS!=chain_step(ns, p1, p2)) { if(SUCCESS!=chain_step(ns, p1, p2)) {
#ifdef DEBUG
PDEBUG("chain_step failed\n"); PDEBUG("chain_step failed\n");
#endif
goto error_strict; goto error_strict;
} }
p1 = p2; p1 = p2;
@ -703,7 +707,9 @@ int connect_proxy_chain(int sock, ip_type target_ip,
if(!(p2=select_proxy(RANDOMLY,pd,proxy_count,&offset))) if(!(p2=select_proxy(RANDOMLY,pd,proxy_count,&offset)))
goto error_more; goto error_more;
if(SUCCESS!=chain_step(ns, p1, p2)) { if(SUCCESS!=chain_step(ns, p1, p2)) {
#ifdef DEBUG
PDEBUG("GOTO AGAIN 2\n"); PDEBUG("GOTO AGAIN 2\n");
#endif
goto again; goto again;
} }
p1 = p2; p1 = p2;
@ -713,6 +719,7 @@ int connect_proxy_chain(int sock, ip_type target_ip,
p3->port = target_port; p3->port = target_port;
if(SUCCESS!=chain_step(ns,p1,p3)) if(SUCCESS!=chain_step(ns,p1,p3))
goto error; goto error;
} }
proxychains_write_log(TP" OK\n"); proxychains_write_log(TP" OK\n");
@ -728,8 +735,9 @@ int connect_proxy_chain(int sock, ip_type target_ip,
error_more: error_more:
proxychains_write_log("\n!!!need more proxies!!!\n"); proxychains_write_log("\n!!!need more proxies!!!\n");
error_strict: error_strict:
#ifdef DEBUG
PDEBUG("error\n"); PDEBUG("error\n");
#endif
release_all(pd,proxy_count); release_all(pd,proxy_count);
if(ns!=-1) if(ns!=-1)
close(ns); close(ns);
@ -737,37 +745,36 @@ int connect_proxy_chain(int sock, ip_type target_ip,
return -1; return -1;
} }
// TODO: all those buffers aren't threadsafe, but since no memory allocation happens there shouldnt be any segfaults
static struct hostent hostent_space;
static in_addr_t resolved_addr;
static char* resolved_addr_p[2];
static char addr_name[1024*8];
static const ip_type local_host = {{127, 0, 0, 1}}; static const ip_type local_host = {{127, 0, 0, 1}};
struct hostent* proxy_gethostbyname(const char *name)
char hostname[256]; // default maximum length of hostname in linux {
struct hostent *proxy_gethostbyname(const char *name, struct gethostbyname_data* data) {
char buff[256]; char buff[256];
uint32_t i, hash; uint32_t i, hash;
// yep, new_mem never gets freed. once you passed a fake ip to the client, you can't "retreat" it // yep, new_mem never gets freed. once you passed a fake ip to the client, you can't "retreat" it
void* new_mem; void* new_mem;
size_t l; size_t l;
struct hostent* hp; struct hostent* hp;
data->resolved_addr_p[0] = (char *) &data->resolved_addr; resolved_addr_p[0] = (char*) &resolved_addr;
data->resolved_addr_p[1] = NULL; resolved_addr_p[1] = NULL;
data->hostent_space.h_addr_list = data->resolved_addr_p; hostent_space.h_addr_list = resolved_addr_p;
data->resolved_addr = 0; resolved_addr = 0;
gethostname(buff,sizeof(buff)); gethostname(buff,sizeof(buff));
if(!strcmp(buff, name)) { if(!strcmp(buff, name)) {
data->resolved_addr = inet_addr(buff); resolved_addr = inet_addr(buff);
if(data->resolved_addr == (in_addr_t) (-1)) if (resolved_addr == (in_addr_t) (-1))
data->resolved_addr = (in_addr_t) (local_host.as_int); resolved_addr = (in_addr_t) (local_host.as_int);
return &hostent_space;
snprintf(hostname,sizeof hostname, "%s", name);
data->hostent_space.h_name = hostname;
data->hostent_space.h_length = sizeof (in_addr_t);
data->hostent_space.h_addrtype = AF_INET;
return &data->hostent_space;
} }
memset(buff, 0, sizeof(buff)); memset(buff, 0, sizeof(buff));
@ -776,15 +783,18 @@ struct hostent *proxy_gethostbyname(const char *name, struct gethostbyname_data*
if (!strcmp(hp->h_name,name)) if (!strcmp(hp->h_name,name))
return hp; return hp;
hash = dalias_hash((char*) name); hash = dalias_hash((char*) name);
MUTEX_LOCK(&internal_ips_lock); #ifdef THREAD_SAFE
pthread_mutex_lock(&internal_ips_lock);
#endif
// see if we already have this dns entry saved. // see if we already have this dns entry saved.
if(internal_ips.counter) { if(internal_ips.counter) {
for( i = 0; i < internal_ips.counter; i++) { for( i = 0; i < internal_ips.counter; i++) {
if(internal_ips.list[i]->hash == hash && !strcmp(name, internal_ips.list[i]->string)) { if(internal_ips.list[i]->hash == hash && !strcmp(name, internal_ips.list[i]->string)) {
data->resolved_addr = make_internal_ip(i); resolved_addr = make_internal_ip(i);
PDEBUG("got cached ip for %s\n", name); PDEBUG("got cached ip for %s\n", name);
goto have_ip; goto have_ip;
} }
@ -805,9 +815,8 @@ struct hostent *proxy_gethostbyname(const char *name, struct gethostbyname_data*
} }
} }
data->resolved_addr = make_internal_ip(internal_ips.counter); resolved_addr = make_internal_ip(internal_ips.counter);
if(data->resolved_addr == (in_addr_t) - 1) if(resolved_addr == (in_addr_t) -1) goto err_plus_unlock;
goto err_plus_unlock;
l = strlen(name); l = strlen(name);
new_mem = malloc(sizeof(string_hash_tuple) + l + 1); new_mem = malloc(sizeof(string_hash_tuple) + l + 1);
@ -818,7 +827,6 @@ struct hostent *proxy_gethostbyname(const char *name, struct gethostbyname_data*
internal_ips.list[internal_ips.counter] = new_mem; internal_ips.list[internal_ips.counter] = new_mem;
internal_ips.list[internal_ips.counter]->hash = hash; internal_ips.list[internal_ips.counter]->hash = hash;
internal_ips.list[internal_ips.counter]->string = (char*) new_mem + sizeof(string_hash_tuple); internal_ips.list[internal_ips.counter]->string = (char*) new_mem + sizeof(string_hash_tuple);
memcpy(internal_ips.list[internal_ips.counter]->string, name, l + 1); memcpy(internal_ips.list[internal_ips.counter]->string, name, l + 1);
@ -827,110 +835,78 @@ struct hostent *proxy_gethostbyname(const char *name, struct gethostbyname_data*
have_ip: have_ip:
MUTEX_UNLOCK(&internal_ips_lock); #ifdef THREAD_SAFE
pthread_mutex_unlock(&internal_ips_lock);
#endif
strncpy(data->addr_name, name, sizeof(data->addr_name) - 1);
data->hostent_space.h_name = data->addr_name; strncpy(addr_name, name, sizeof(addr_name));
data->hostent_space.h_length = sizeof(in_addr_t);
data->hostent_space.h_addrtype = AF_INET;
return &data->hostent_space; hostent_space.h_name = addr_name;
hostent_space.h_length = sizeof (in_addr_t);
return &hostent_space;
err_plus_unlock: err_plus_unlock:
MUTEX_UNLOCK(&internal_ips_lock); #ifdef THREAD_SAFE
pthread_mutex_unlock(&internal_ips_lock);
#endif
return NULL; return NULL;
} }
int proxy_getaddrinfo(const char *node, const char *service,
struct addrinfo_data { const struct addrinfo *hints,
struct addrinfo addrinfo_space; struct addrinfo **res)
struct sockaddr sockaddr_space;
char addr_name[256];
};
void proxy_freeaddrinfo(struct addrinfo *res) {
free(res);
}
void proxy_getservbyname(const char * service, struct servent *se_buf,
char * buf, size_t buf_len, struct servent **se_result)
{ {
#ifdef __linux__
getservbyname_r(service, NULL, se_buf, buf, buf_len, se_result);
#endif
#ifdef __APPLE__
struct servent *se;
MUTEX_LOCK(&internal_getsrvbyname_lock);
if(service) {
se = getservbyname(service, NULL);
if ( se != NULL ) {
memcpy(se_buf, se, buf_len);
*se_result = se_buf;
} else {
*se_result = NULL;
}
}
MUTEX_UNLOCK(&internal_getsrvbyname_lock);
#endif /* __APPLE__ */
}
int proxy_getaddrinfo(const char *node, const char *service, const struct addrinfo *hints, struct addrinfo **res) {
struct gethostbyname_data ghdata;
struct addrinfo_data *space;
struct servent *se = NULL; struct servent *se = NULL;
struct hostent *hp = NULL; struct hostent *hp = NULL;
struct servent se_buf; struct sockaddr* sockaddr_space = NULL;
struct addrinfo *p; struct addrinfo* addrinfo_space = NULL;
char buf[1024];
int port;
// printf("proxy_getaddrinfo node %s service %s\n",node,service); // printf("proxy_getaddrinfo node %s service %s\n",node,service);
space = calloc(1, sizeof(struct addrinfo_data)); addrinfo_space = malloc(sizeof(struct addrinfo));
if(!space) if(!addrinfo_space)
return 1; goto err1;
sockaddr_space = malloc(sizeof(struct sockaddr));
if(node && !inet_aton(node, &((struct sockaddr_in *) &space->sockaddr_space)->sin_addr)) { if(!sockaddr_space)
hp = proxy_gethostbyname(node, &ghdata); goto err2;
if(hp) { memset(sockaddr_space, 0, sizeof(*sockaddr_space));
memcpy(&((struct sockaddr_in *) &space->sockaddr_space)->sin_addr, memset(addrinfo_space, 0, sizeof(*addrinfo_space));
*(hp->h_addr_list), sizeof(in_addr_t)); if (node &&
} else { !inet_aton(node,&((struct sockaddr_in*)sockaddr_space)->sin_addr)) {
free(space); hp = proxy_gethostbyname(node);
return 1; if (hp)
} memcpy(&((struct sockaddr_in*)sockaddr_space)->sin_addr,
*(hp->h_addr_list),
sizeof(in_addr_t));
else
goto err3;
} }
if (service) if (service)
proxy_getservbyname(service, &se_buf, buf, sizeof(buf), &se); se = getservbyname(service, NULL);
port = se ? se->s_port : htons((uint16_t)atoi(service ? service : "0")); if (!se) {
((struct sockaddr_in *) &space->sockaddr_space)->sin_port = (in_port_t)port; ((struct sockaddr_in*)sockaddr_space)->sin_port =
htons(atoi(service?:"0"));
} else
((struct sockaddr_in*)sockaddr_space)->sin_port = se->s_port;
*res = p = &space->addrinfo_space; *res = addrinfo_space;
assert((size_t)p == (size_t) space); (*res)->ai_addr = sockaddr_space;
p->ai_addr = &space->sockaddr_space;
if (node) if (node)
strncpy(space->addr_name, node, sizeof(space->addr_name) - 1); strcpy(addr_name, node);
p->ai_canonname = space->addr_name; (*res)->ai_canonname = addr_name;
p->ai_next = NULL; (*res)->ai_next = NULL;
p->ai_family = space->sockaddr_space.sa_family = AF_INET; (*res)->ai_family = sockaddr_space->sa_family = AF_INET;
p->ai_addrlen = sizeof(space->sockaddr_space); (*res)->ai_socktype = hints->ai_socktype;
(*res)->ai_flags = hints->ai_flags;
if(hints) { (*res)->ai_protocol = hints->ai_protocol;
p->ai_socktype = hints->ai_socktype; (*res)->ai_addrlen = sizeof(*sockaddr_space);
p->ai_flags = hints->ai_flags; goto out;
p->ai_protocol = hints->ai_protocol; err3:
} else { free(sockaddr_space);
#ifdef BSD err2:
p->ai_flags = (AI_V4MAPPED | AI_ADDRCONFIG); free(addrinfo_space);
#else err1:
p->ai_flags = (AI_ADDRCONFIG); return 1;
#endif out:
}
return 0; return 0;
} }

View File

@ -4,8 +4,10 @@
begin : Tue May 14 2002 begin : Tue May 14 2002
copyright : netcreature (C) 2002 copyright : netcreature (C) 2002
email : netcreature@users.sourceforge.net email : netcreature@users.sourceforge.net
*************************************************************************** ***************************************************************************/
*************************************************************************** #include <stdint.h>
/* GPL */
/***************************************************************************
* * * *
* This program is free software; you can redistribute it and/or modify * * This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by * * it under the terms of the GNU General Public License as published by *
@ -13,14 +15,10 @@
* (at your option) any later version. * * (at your option) any later version. *
* * * *
***************************************************************************/ ***************************************************************************/
#include <stdint.h>
#ifndef __CORE_HEADER #ifndef __CORE_HEADER
#define __CORE_HEADER #define __CORE_HEADER
#define BUFF_SIZE 8*1024 // used to read responses from proxies. #define BUFF_SIZE 8*1024 // used to read responses from proxies.
#define MAX_LOCALNET 64 #define MAX_LOCALNET 1024
#define MAX_DNAT 64
typedef union { typedef union {
unsigned char octet[4]; unsigned char octet[4];
@ -39,20 +37,9 @@ typedef struct {
} internal_ip_lookup_table; } internal_ip_lookup_table;
extern internal_ip_lookup_table internal_ips; extern internal_ip_lookup_table internal_ips;
#ifdef THREAD_SAFE #ifdef THREAD_SAFE
#include <pthread.h> #include <pthread.h>
extern pthread_mutex_t internal_ips_lock; extern pthread_mutex_t internal_ips_lock;
extern pthread_mutex_t internal_getsrvbyname_lock;
# define MUTEX_LOCK(x) pthread_mutex_lock(x)
# define MUTEX_UNLOCK(x) pthread_mutex_unlock(x)
# define MUTEX_INIT(x,y) pthread_mutex_init(x, y)
#else
# define MUTEX_LOCK(x)
# define MUTEX_UNLOCK(x)
# define MUTEX_INIT(x,y)
#endif #endif
/*error codes*/ /*error codes*/
@ -65,9 +52,9 @@ typedef enum {
BLOCKED // target's port blocked on last proxy in the chain BLOCKED // target's port blocked on last proxy in the chain
} ERR_CODE; } ERR_CODE;
typedef enum { typedef enum {
HTTP_TYPE, HTTP_TYPE,
RAW_TYPE,
SOCKS4_TYPE, SOCKS4_TYPE,
SOCKS5_TYPE SOCKS5_TYPE
} proxy_type; } proxy_type;
@ -95,11 +82,6 @@ typedef struct {
unsigned short port; unsigned short port;
} localaddr_arg; } localaddr_arg;
typedef struct {
struct in_addr orig_dst, new_dst;
unsigned short orig_port, new_port;
} dnat_arg;
typedef struct { typedef struct {
ip_type ip; ip_type ip;
unsigned short port; unsigned short port;
@ -109,50 +91,61 @@ typedef struct {
char pass[256]; char pass[256];
} proxy_data; } proxy_data;
int connect_proxy_chain (int, ip_type, unsigned short, proxy_data *, unsigned int, typedef struct {
chain_type, unsigned int); proxy_data *pd;
chain_type ct;
unsigned int proxy_count;
int sock;
struct sockaddr addr;
int flags;
} thread_arg;
int connect_proxy_chain (
int sock,
ip_type target_ip,
unsigned short target_port,
proxy_data * pd,
unsigned int proxy_count,
chain_type ct,
unsigned int max_chain );
int proxychains_write_log(char *str,...);
struct hostent* proxy_gethostbyname(const char *name);
void proxychains_write_log(char *, ...);
typedef int (*connect_t)(int, const struct sockaddr *, socklen_t); typedef int (*connect_t)(int, const struct sockaddr *, socklen_t);
connect_t true_connect;
typedef struct hostent* (*gethostbyname_t)(const char *); typedef struct hostent* (*gethostbyname_t)(const char *);
typedef int (*freeaddrinfo_t)(struct addrinfo *); gethostbyname_t true_gethostbyname;
#if (defined __linux__) || (defined __APPLE__) typedef int (*getaddrinfo_t)(const char *, const char *,
typedef struct hostent *(*gethostbyaddr_t) (const void *, socklen_t, int); const struct addrinfo *,
#else
typedef struct hostent *(*gethostbyaddr_t) (const char *, socklen_t, int);
#endif
typedef int (*getaddrinfo_t)(const char *, const char *, const struct addrinfo *,
struct addrinfo **); struct addrinfo **);
typedef int (*getnameinfo_t) (const struct sockaddr *, socklen_t, char *, getaddrinfo_t true_getaddrinfo;
socklen_t, char *, socklen_t, int);
typedef int (*freeaddrinfo_t)(struct addrinfo *);
freeaddrinfo_t true_freeaddrinfo;
extern connect_t true_connect; typedef int (*getnameinfo_t) (const struct sockaddr *,
extern gethostbyname_t true_gethostbyname; socklen_t, char *,
extern getaddrinfo_t true_getaddrinfo; socklen_t, char *,
extern freeaddrinfo_t true_freeaddrinfo; socklen_t, unsigned int);
extern getnameinfo_t true_getnameinfo; getnameinfo_t true_getnameinfo;
extern gethostbyaddr_t true_gethostbyaddr;
struct gethostbyname_data { typedef struct hostent *(*gethostbyaddr_t) (const void *, socklen_t, int);
struct hostent hostent_space; gethostbyaddr_t true_gethostbyaddr;
in_addr_t resolved_addr;
char *resolved_addr_p[2];
char addr_name[1024 * 8];
};
struct hostent* proxy_gethostbyname(const char *, struct gethostbyname_data *); int proxy_getaddrinfo(const char *node, const char *service,
void proxy_getservbyname(const char *, struct servent *, char *, size_t, struct servent **); const struct addrinfo *hints,
int proxy_getaddrinfo(const char *, const char *, const struct addrinfo *, struct addrinfo **); struct addrinfo **res);
void proxy_freeaddrinfo(struct addrinfo *);
struct hostent* proxy_gethostbyname(const char *name);
#ifdef DEBUG #ifdef DEBUG
# define PDEBUG(fmt, args...) do { fprintf(stderr,"DEBUG:"fmt, ## args); fflush(stderr); } while(0) # define PDEBUG(fmt, args...) fprintf(stderr,"DEBUG:"fmt, ## args)
#else #else
# define PDEBUG(fmt, args...) do {} while (0) # define PDEBUG(fmt, args...)
#endif #endif
#endif #endif

View File

@ -18,21 +18,20 @@
#undef _GNU_SOURCE #undef _GNU_SOURCE
#define _GNU_SOURCE #define _GNU_SOURCE
#include <sys/types.h>
#include <sys/param.h>
#include <dlfcn.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <stdio.h> #include <stdio.h>
#include <unistd.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <unistd.h> #include <errno.h>
#include <netdb.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <fcntl.h>
#include <dlfcn.h>
#include "core.h" #include "core.h"
#include "common.h" #include "common.h"
@ -42,187 +41,183 @@
#define SOCKADDR_2(x) (satosin(x)->sin_addr) #define SOCKADDR_2(x) (satosin(x)->sin_addr)
#define SOCKPORT(x) (satosin(x)->sin_port) #define SOCKPORT(x) (satosin(x)->sin_port)
#define SOCKFAMILY(x) (satosin(x)->sin_family) #define SOCKFAMILY(x) (satosin(x)->sin_family)
#define MAX_CHAIN 512 #define MAX_CHAIN 30*1024
connect_t true_connect;
gethostbyname_t true_gethostbyname;
getaddrinfo_t true_getaddrinfo;
freeaddrinfo_t true_freeaddrinfo;
getnameinfo_t true_getnameinfo;
gethostbyaddr_t true_gethostbyaddr;
int tcp_read_time_out; int tcp_read_time_out;
int tcp_connect_time_out; int tcp_connect_time_out;
int proxychains_got_chain_data = 0;
int proxychains_quiet_mode = 0;
int proxychains_resolver = 0;
unsigned int proxychains_proxy_count = 0;
unsigned int proxychains_max_chain = 1;
unsigned int remote_dns_subnet = 224;
localaddr_arg localnet_addr[MAX_LOCALNET];
chain_type proxychains_ct; chain_type proxychains_ct;
proxy_data proxychains_pd[MAX_CHAIN]; proxy_data proxychains_pd[MAX_CHAIN];
unsigned int proxychains_proxy_count = 0;
size_t num_localnet_addr = 0; int proxychains_got_chain_data = 0;
dnat_arg dnats[MAX_DNAT]; unsigned int proxychains_max_chain = 1;
size_t num_dnats = 0; int proxychains_quiet_mode = 0;
int proxychains_resolver = 0;
#ifdef THREAD_SAFE
pthread_once_t init_once = PTHREAD_ONCE_INIT;
#endif
static int init_l = 0; static int init_l = 0;
localaddr_arg localnet_addr[MAX_LOCALNET];
size_t num_localnet_addr = 0;
static void load_default_settings(chain_type *ct); static inline void get_chain_data(proxy_data *pd, unsigned int *proxy_count,
static inline void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_type * ct); chain_type *ct);
static void simple_socks5_env(proxy_data * pd, unsigned int *proxy_count, chain_type * ct); static void init_lib(void);
static void* load_sym(char* symname, void* proxyfunc) { static void init_lib(void)
{
void *funcptr = dlsym(RTLD_NEXT, symname); #ifdef THREAD_SAFE
if(!funcptr) { pthread_mutex_init(&internal_ips_lock, NULL);
fprintf(stderr, "Cannot load symbol '%s' %s\n", symname, dlerror());
exit(1);
} else {
PDEBUG("loaded symbol '%s'" " real addr %p wrapped addr %p\n", symname, funcptr, proxyfunc);
}
if(funcptr == proxyfunc) {
PDEBUG("circular reference detected, aborting!\n");
abort();
}
return funcptr;
}
#define INIT() init_lib_wrapper(__FUNCTION__)
#define SETUP_SYM(X) do { true_ ## X = load_sym( # X, X ); } while(0)
static void do_init(void) {
MUTEX_INIT(&internal_ips_lock, NULL);
#ifdef __APPLE__
MUTEX_INIT(&internal_getsrvbyname_lock, NULL);
#endif #endif
/* check for simple SOCKS5 proxy setup */
simple_socks5_env(proxychains_pd, &proxychains_proxy_count, &proxychains_ct);
/* read the config file */ /* read the config file */
get_chain_data(proxychains_pd, &proxychains_proxy_count, &proxychains_ct); get_chain_data(proxychains_pd, &proxychains_proxy_count, &proxychains_ct);
proxychains_write_log(LOG_PREFIX "DLL init\n"); proxychains_write_log(LOG_PREFIX "DLL init\n");
SETUP_SYM(connect);
SETUP_SYM(gethostbyname); true_connect = (connect_t) dlsym(RTLD_NEXT, "connect");
SETUP_SYM(getaddrinfo);
SETUP_SYM(freeaddrinfo); if (!true_connect) {
SETUP_SYM(gethostbyaddr); fprintf(stderr, "Cannot load symbol 'connect' %s\n", dlerror());
SETUP_SYM(getnameinfo); exit(1);
} else {
#ifdef DEBUG
PDEBUG( "loaded symbol 'connect'"
" real addr %p wrapped addr %p\n",
true_connect, connect);
#endif
}
if(connect==true_connect) {
#ifdef DEBUG
PDEBUG("circular reference detected, aborting!\n");
#endif
abort();
}
true_gethostbyname = (gethostbyname_t)
dlsym(RTLD_NEXT, "gethostbyname");
if (!true_gethostbyname) {
fprintf(stderr, "Cannot load symbol 'gethostbyname' %s\n",
dlerror());
exit(1);
} else {
#ifdef DEBUG
PDEBUG( "loaded symbol 'gethostbyname'"
" real addr %p wrapped addr %p\n",
true_gethostbyname, gethostbyname);
#endif
}
true_getaddrinfo = (getaddrinfo_t)
dlsym(RTLD_NEXT, "getaddrinfo");
if (!true_getaddrinfo) {
fprintf(stderr, "Cannot load symbol 'getaddrinfo' %s\n",
dlerror());
exit(1);
} else {
#ifdef DEBUG
PDEBUG( "loaded symbol 'getaddrinfo'"
" real addr %p wrapped addr %p\n",
true_getaddrinfo, getaddrinfo);
#endif
}
true_freeaddrinfo = (freeaddrinfo_t)
dlsym(RTLD_NEXT, "freeaddrinfo");
if (!true_freeaddrinfo) {
fprintf(stderr, "Cannot load symbol 'freeaddrinfo' %s\n",
dlerror());
exit(1);
} else {
#ifdef DEBUG
PDEBUG( "loaded symbol 'freeaddrinfo'"
" real addr %p wrapped addr %p\n",
true_freeaddrinfo, freeaddrinfo);
#endif
}
true_gethostbyaddr = (gethostbyaddr_t)
dlsym(RTLD_NEXT, "gethostbyaddr");
if (!true_gethostbyaddr) {
fprintf(stderr, "Cannot load symbol 'gethostbyaddr' %s\n",
dlerror());
exit(1);
} else {
#ifdef DEBUG
PDEBUG( "loaded symbol 'gethostbyaddr'"
" real addr %p wrapped addr %p\n",
true_gethostbyaddr, gethostbyaddr);
#endif
}
true_getnameinfo = (getnameinfo_t)
dlsym(RTLD_NEXT, "getnameinfo");
if (!true_getnameinfo) {
fprintf(stderr, "Cannot load symbol 'getnameinfo' %s\n",
dlerror());
exit(1);
} else {
#ifdef DEBUG
PDEBUG( "loaded symbol 'getnameinfo'"
" real addr %p wrapped addr %p\n",
true_getnameinfo, getnameinfo);
#endif
}
init_l = 1; init_l = 1;
} }
static void init_lib_wrapper(const char* caller) { static inline void get_chain_data(
#ifndef DEBUG proxy_data *pd,
(void) caller; unsigned int *proxy_count,
#endif chain_type *ct)
#ifndef THREAD_SAFE {
if(init_l) return; int count=0,port_n=0,list=0;
PDEBUG("%s called from %s\n", __FUNCTION__, caller);
do_init();
#else
if(!init_l) PDEBUG("%s called from %s\n", __FUNCTION__, caller);
pthread_once(&init_once, do_init);
#endif
}
/* if we use gcc >= 3, we can instruct the dynamic loader
* to call init_lib at link time. otherwise it gets loaded
* lazily, which has the disadvantage that there's a potential
* race condition if 2 threads call it before init_l is set
* and PTHREAD support was disabled */
#if __GNUC__ > 2
__attribute__((constructor))
static void gcc_init(void) {
INIT();
}
#endif
FILE *
open_config_file() {
char home_conf[MAXPATHLEN], prefix_conf[MAXPATHLEN];
FILE *file;
snprintf(home_conf, 256, "%s/.proxychains/proxychains.conf", getenv("HOME"));
snprintf(prefix_conf, 256, "%s/etc/proxychains.conf", INSTALL_PREFIX);
if(!(file = fopen("./proxychains.conf", "r"))) {
if(!(file = fopen(home_conf, "r"))) {
if(!(file = fopen(prefix_conf, "r"))) {
if(!(file = fopen("/etc/proxychains.conf", "r"))) {
perror("Can't locate proxychains.conf");
exit(1);
}
}
}
}
return file;
}
/* default settings common to get_chain_data and simple_socks5_env */
static void load_default_settings(chain_type *ct) {
char *env;
tcp_read_time_out = 4 * 1000;
tcp_connect_time_out = 10 * 1000;
*ct = DYNAMIC_TYPE;
env = getenv(PROXYCHAINS_QUIET_MODE_ENV_VAR);
if(env && *env == '1')
proxychains_quiet_mode = 1;
}
/* get configuration from config file */
static void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_type * ct) {
unsigned int count = 0;
int port_n = 0, list = 0;
char buff[1024],type[1024],host[1024],user[1024]; char buff[1024],type[1024],host[1024],user[1024];
char *env; char *env;
char local_in_addr_port[32]; char local_in_addr_port[32];
char local_in_addr[32], local_in_port[32], local_netmask[32]; char local_in_addr[32], local_in_port[32], local_netmask[32];
char dnat_orig_addr_port[32], dnat_new_addr_port[32]; FILE* file;
char dnat_orig_addr[32], dnat_orig_port[32], dnat_new_addr[32], dnat_new_port[32];
FILE *file = NULL;
if(proxychains_got_chain_data) if(proxychains_got_chain_data)
return; return;
load_default_settings(ct); //Some defaults
tcp_read_time_out = 4*1000;
tcp_connect_time_out = 10*1000;
*ct = DYNAMIC_TYPE;
env = get_config_path(getenv(PROXYCHAINS_CONF_FILE_ENV_VAR), buff, sizeof(buff)); /*
file = fopen(env, "r"); * Get path to configuration file from env this file has priority
* if it's defined.
*/
env = getenv(PROXYCHAINS_CONF_FILE_ENV_VAR);
snprintf(buff,256,"%s/.proxychains/proxychains.conf",getenv("HOME"));
if(!env || (!(file=fopen(env,"r"))))
if(!(file=fopen("./proxychains.conf","r")))
if(!(file=fopen(buff,"r")))
if(!(file=fopen("/etc/proxychains.conf","r")))
{
perror("Can't locate proxychains.conf");
exit(1);
}
env = getenv(PROXYCHAINS_QUIET_MODE_ENV_VAR);
if(env && *env == '1') proxychains_quiet_mode = 1;
while(fgets(buff,sizeof(buff),file)) { while(fgets(buff,sizeof(buff),file)) {
if(buff[0] != '\n' && buff[strspn(buff," ")]!='#') { if(buff[0] != '\n' && buff[strspn(buff," ")]!='#') {
/* proxylist has to come last */
if(list) { if(list) {
if(count >= MAX_CHAIN)
break;
memset(&pd[count], 0, sizeof(proxy_data)); memset(&pd[count], 0, sizeof(proxy_data));
pd[count].ps = PLAY_STATE; pd[count].ps = PLAY_STATE;
port_n = 0; port_n = 0;
sscanf(buff, "%s %s %d %s %s", type, host, &port_n, pd[count].user, pd[count].pass); sscanf(buff,"%s %s %d %s %s", type, host, &port_n,
pd[count].user, pd[count].pass);
pd[count].ip.as_int = (uint32_t) inet_addr(host); pd[count].ip.as_int = (uint32_t) inet_addr(host);
pd[count].port = htons((unsigned short)port_n); pd[count].port = htons((unsigned short)port_n);
if(!strcmp(type,"http")) { if(!strcmp(type,"http")) {
pd[count].pt = HTTP_TYPE; pd[count].pt = HTTP_TYPE;
} else if(!strcmp(type, "raw")) {
pd[count].pt = RAW_TYPE;
} else if(!strcmp(type,"socks4")) { } else if(!strcmp(type,"socks4")) {
pd[count].pt = SOCKS4_TYPE; pd[count].pt = SOCKS4_TYPE;
} else if(!strcmp(type,"socks5")) { } else if(!strcmp(type,"socks5")) {
@ -230,8 +225,10 @@ static void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_typ
} else } else
continue; continue;
if(pd[count].ip.as_int && port_n && pd[count].ip.as_int != (uint32_t) - 1) if(pd[count].ip.as_int && port_n &&
count++; pd[count].ip.as_int != (uint32_t) -1)
if(++count==MAX_CHAIN)
break;
} else { } else {
if(strstr(buff,"[ProxyList]")) { if(strstr(buff,"[ProxyList]")) {
list=1; list=1;
@ -245,113 +242,59 @@ static void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_typ
sscanf(buff,"%s %d",user,&tcp_read_time_out) ; sscanf(buff,"%s %d",user,&tcp_read_time_out) ;
} else if(strstr(buff,"tcp_connect_time_out")){ } else if(strstr(buff,"tcp_connect_time_out")){
sscanf(buff,"%s %d",user,&tcp_connect_time_out) ; sscanf(buff,"%s %d",user,&tcp_connect_time_out) ;
} else if(strstr(buff, "remote_dns_subnet")) {
sscanf(buff, "%s %d", user, &remote_dns_subnet);
if(remote_dns_subnet >= 256) {
fprintf(stderr,
"remote_dns_subnet: invalid value. requires a number between 0 and 255.\n");
exit(1);
}
} else if(strstr(buff,"localnet")) { } else if(strstr(buff,"localnet")) {
if(sscanf(buff, "%s %21[^/]/%15s", user, local_in_addr_port, local_netmask) < 3) { if (sscanf(buff,"%s %21[^/]/%15s", user,
local_in_addr_port, local_netmask) < 3) {
fprintf(stderr, "localnet format error"); fprintf(stderr, "localnet format error");
exit(1); exit(1);
} }
/* clean previously used buffer */ /* clean previously used buffer */
memset(local_in_port, 0, sizeof(local_in_port) / sizeof(local_in_port[0])); memset(local_in_port, 0,
sizeof(local_in_port) / sizeof(local_in_port[0]));
if(sscanf(local_in_addr_port, "%15[^:]:%5s", local_in_addr, local_in_port) < 2) { if (sscanf(local_in_addr_port, "%15[^:]:%5s",
PDEBUG("added localnet: netaddr=%s, netmask=%s\n", local_in_addr, local_in_port) < 2) {
PDEBUG("added localnet: netaddr=%s, port=%s\n",
local_in_addr, local_netmask); local_in_addr, local_netmask);
} else { } else {
PDEBUG("added localnet: netaddr=%s, port=%s, netmask=%s\n", PDEBUG("added localnet: netaddr=%s, port=%s, netmask=%s\n",
local_in_addr, local_in_port, local_netmask); local_in_addr, local_in_port, local_netmask);
} }
if(num_localnet_addr < MAX_LOCALNET) { if (num_localnet_addr < MAX_LOCALNET)
{
int error; int error;
error = error = inet_pton(AF_INET, local_in_addr, &localnet_addr[num_localnet_addr].in_addr);
inet_pton(AF_INET, local_in_addr, if (error <= 0)
&localnet_addr[num_localnet_addr].in_addr); {
if(error <= 0) {
fprintf(stderr, "localnet address error\n"); fprintf(stderr, "localnet address error\n");
exit(1); exit(1);
} }
error = error = inet_pton(AF_INET, local_netmask, &localnet_addr[num_localnet_addr].netmask);
inet_pton(AF_INET, local_netmask, if (error <= 0)
&localnet_addr[num_localnet_addr].netmask); {
if(error <= 0) {
fprintf(stderr, "localnet netmask error\n"); fprintf(stderr, "localnet netmask error\n");
exit(1); exit(1);
} }
if (local_in_port[0]) { if (local_in_port[0]) {
localnet_addr[num_localnet_addr].port = localnet_addr[num_localnet_addr].port = (short)atoi(local_in_port);
(unsigned short) atoi(local_in_port);
} else { } else {
localnet_addr[num_localnet_addr].port = 0; localnet_addr[num_localnet_addr].port = 0;
} }
++num_localnet_addr; ++num_localnet_addr;
} else { }
else
{
fprintf(stderr, "# of localnet exceed %d.\n", MAX_LOCALNET); fprintf(stderr, "# of localnet exceed %d.\n", MAX_LOCALNET);
} }
} else if(strstr(buff,"chain_len")){ } else if(strstr(buff,"chain_len")){
char *pc; char *pc;int len;
int len;
pc=strchr(buff,'='); pc=strchr(buff,'=');
len=atoi(++pc); len=atoi(++pc);
proxychains_max_chain = (unsigned int) (len ? len : 1); proxychains_max_chain=(len?len:1);
} else if(strstr(buff,"quiet_mode")){ } else if(strstr(buff,"quiet_mode")){
proxychains_quiet_mode=1; proxychains_quiet_mode=1;
} else if(strstr(buff,"proxy_dns")){ } else if(strstr(buff,"proxy_dns")){
proxychains_resolver=1; proxychains_resolver=1;
} else if(strstr(buff, "dnat")) {
if(sscanf(buff, "%s %21[^ ] %21s\n", user, dnat_orig_addr_port, dnat_new_addr_port) < 3) {
fprintf(stderr, "dnat format error");
exit(1);
}
/* clean previously used buffer */
memset(dnat_orig_port, 0, sizeof(dnat_orig_port) / sizeof(dnat_orig_port[0]));
memset(dnat_new_port, 0, sizeof(dnat_new_port) / sizeof(dnat_new_port[0]));
(void)sscanf(dnat_orig_addr_port, "%15[^:]:%5s", dnat_orig_addr, dnat_orig_port);
(void)sscanf(dnat_new_addr_port, "%15[^:]:%5s", dnat_new_addr, dnat_new_port);
if(num_dnats < MAX_DNAT) {
int error;
error =
inet_pton(AF_INET, dnat_orig_addr,
&dnats[num_dnats].orig_dst);
if(error <= 0) {
fprintf(stderr, "dnat original destination address error\n");
exit(1);
}
error =
inet_pton(AF_INET, dnat_new_addr,
&dnats[num_dnats].new_dst);
if(error <= 0) {
fprintf(stderr, "dnat effective destination address error\n");
exit(1);
}
if(dnat_orig_port[0]) {
dnats[num_dnats].orig_port =
(unsigned short) atoi(dnat_orig_port);
} else {
dnats[num_dnats].orig_port = 0;
}
if(dnat_new_port[0]) {
dnats[num_dnats].new_port =
(unsigned short) atoi(dnat_new_port);
} else {
dnats[num_dnats].new_port = 0;
}
PDEBUG("added dnat: orig-dst=%s orig-port=%d new-dst=%s new-port=%d\n", dnat_orig_addr, dnats[num_dnats].orig_port, dnat_new_addr, dnats[num_dnats].new_port);
++num_dnats;
} else {
fprintf(stderr, "# of dnat exceed %d.\n", MAX_DNAT);
}
} }
} }
} }
@ -361,43 +304,10 @@ static void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_typ
proxychains_got_chain_data = 1; proxychains_got_chain_data = 1;
} }
static void simple_socks5_env(proxy_data *pd, unsigned int *proxy_count, chain_type *ct) {
char *port_string;
char *host_string;
if(proxychains_got_chain_data)
return;
load_default_settings(ct); int connect (int sock, const struct sockaddr *addr, unsigned int len)
{
port_string = getenv(PROXYCHAINS_SOCKS5_PORT_ENV_VAR);
if(!port_string)
return;
host_string = getenv(PROXYCHAINS_SOCKS5_HOST_ENV_VAR);
if(!host_string)
host_string = "127.0.0.1";
memset(pd, 0, sizeof(proxy_data));
pd[0].ps = PLAY_STATE;
pd[0].ip.as_int = (uint32_t) inet_addr(host_string);
pd[0].port = htons((unsigned short) strtol(port_string, NULL, 0));
pd[0].pt = SOCKS5_TYPE;
proxychains_max_chain = 1;
if(getenv(PROXYCHAINS_DNS_ENV_VAR))
proxychains_resolver = 1;
*proxy_count = 1;
proxychains_got_chain_data = 1;
}
/******* HOOK FUNCTIONS *******/
int connect(int sock, const struct sockaddr *addr, socklen_t len) {
int socktype=0, flags=0, ret=0; int socktype=0, flags=0, ret=0;
socklen_t optlen = 0; socklen_t optlen = 0;
ip_type dest_ip; ip_type dest_ip;
@ -405,13 +315,11 @@ int connect(int sock, const struct sockaddr *addr, socklen_t len) {
char str[256]; char str[256];
#endif #endif
struct in_addr *p_addr_in; struct in_addr *p_addr_in;
struct sockaddr_in new_addr;
dnat_arg *dnat = NULL;
unsigned short port; unsigned short port;
size_t i; size_t i;
int remote_dns_connect = 0;
INIT(); if(!init_l)
init_lib();
optlen=sizeof(socktype); optlen=sizeof(socktype);
getsockopt(sock,SOL_SOCKET,SO_TYPE,&socktype,&optlen); getsockopt(sock,SOL_SOCKET,SO_TYPE,&socktype,&optlen);
if (! (SOCKFAMILY(*addr)==AF_INET && socktype==SOCK_STREAM)) if (! (SOCKFAMILY(*addr)==AF_INET && socktype==SOCK_STREAM))
@ -426,37 +334,11 @@ int connect(int sock, const struct sockaddr *addr, socklen_t len) {
PDEBUG("target: %s\n", inet_ntop(AF_INET, p_addr_in, str, sizeof(str))); PDEBUG("target: %s\n", inet_ntop(AF_INET, p_addr_in, str, sizeof(str)));
PDEBUG("port: %d\n", port); PDEBUG("port: %d\n", port);
#endif #endif
for (i = 0; i < num_localnet_addr; i++) {
// check if connect called from proxydns
remote_dns_connect = (ntohl(p_addr_in->s_addr) >> 24 == remote_dns_subnet);
// more specific first
for(i = 0; i < num_dnats && !remote_dns_connect && !dnat; i++)
if(dnats[i].orig_dst.s_addr == p_addr_in->s_addr)
if(dnats[i].orig_port && (dnats[i].orig_port == port))
dnat = &dnats[i];
for(i = 0; i < num_dnats && !remote_dns_connect && !dnat; i++)
if(dnats[i].orig_dst.s_addr == p_addr_in->s_addr)
if(!dnats[i].orig_port)
dnat = &dnats[i];
if (dnat) {
if (dnat->new_port)
new_addr.sin_port = htons(dnat->new_port);
else
new_addr.sin_port = htons(port);
new_addr.sin_addr = dnat->new_dst;
addr = (struct sockaddr *)&new_addr;
p_addr_in = &((struct sockaddr_in *) addr)->sin_addr;
port = ntohs(((struct sockaddr_in *) addr)->sin_port);
}
for(i = 0; i < num_localnet_addr && !remote_dns_connect; i++) {
if ((localnet_addr[i].in_addr.s_addr & localnet_addr[i].netmask.s_addr) if ((localnet_addr[i].in_addr.s_addr & localnet_addr[i].netmask.s_addr)
== (p_addr_in->s_addr & localnet_addr[i].netmask.s_addr)) { == (p_addr_in->s_addr & localnet_addr[i].netmask.s_addr))
if(!localnet_addr[i].port || localnet_addr[i].port == port) { {
if (localnet_addr[i].port || localnet_addr[i].port == port) {
PDEBUG("accessing localnet using true_connect\n"); PDEBUG("accessing localnet using true_connect\n");
return true_connect(sock,addr,len); return true_connect(sock,addr,len);
} }
@ -469,10 +351,14 @@ int connect(int sock, const struct sockaddr *addr, socklen_t len) {
dest_ip.as_int = SOCKADDR(*addr); dest_ip.as_int = SOCKADDR(*addr);
ret = connect_proxy_chain(sock, ret = connect_proxy_chain(
sock,
dest_ip, dest_ip,
SOCKPORT(*addr), SOCKPORT(*addr),
proxychains_pd, proxychains_proxy_count, proxychains_ct, proxychains_max_chain); proxychains_pd,
proxychains_proxy_count,
proxychains_ct,
proxychains_max_chain );
fcntl(sock, F_SETFL, flags); fcntl(sock, F_SETFL, flags);
if(ret != SUCCESS) if(ret != SUCCESS)
@ -480,24 +366,29 @@ int connect(int sock, const struct sockaddr *addr, socklen_t len) {
return ret; return ret;
} }
static struct gethostbyname_data ghbndata; struct hostent *gethostbyname(const char *name)
struct hostent *gethostbyname(const char *name) { {
INIT(); if(!init_l)
init_lib();
PDEBUG("gethostbyname: %s\n",name); PDEBUG("gethostbyname: %s\n",name);
if(proxychains_resolver) if(proxychains_resolver)
return proxy_gethostbyname(name, &ghbndata); return proxy_gethostbyname(name);
else else
return true_gethostbyname(name); return true_gethostbyname(name);
return NULL; return NULL;
} }
int getaddrinfo(const char *node, const char *service, const struct addrinfo *hints, struct addrinfo **res) { int getaddrinfo(const char *node, const char *service,
const struct addrinfo *hints,
struct addrinfo **res)
{
int ret = 0; int ret = 0;
INIT(); if(!init_l)
init_lib();
PDEBUG("getaddrinfo: %s %s\n",node ,service); PDEBUG("getaddrinfo: %s %s\n",node ,service);
@ -509,59 +400,85 @@ int getaddrinfo(const char *node, const char *service, const struct addrinfo *hi
return ret; return ret;
} }
void freeaddrinfo(struct addrinfo *res) { void freeaddrinfo(struct addrinfo *res)
INIT(); {
if(!init_l)
init_lib();
PDEBUG("freeaddrinfo %p \n",res); PDEBUG("freeaddrinfo %p \n",res);
if(!proxychains_resolver) if(!proxychains_resolver)
true_freeaddrinfo(res); true_freeaddrinfo(res);
else else {
proxy_freeaddrinfo(res); free(res->ai_addr);
free(res);
}
return; return;
} }
// work around a buggy prototype in GLIBC. according to the bugtracker it has been fixed in git at 02 May 2011. // work around a buggy prototype in GLIBC. according to the bugtracker it has been fixed in git at 02 May 2011.
// 2.14 came out in June 2011 so that should be the first fixed version // 2.14 came out in June 2011 so that should be the first fixed version
#if defined(__GLIBC__) && (__GLIBC__ < 3) && (__GLIBC_MINOR__ < 14) #if defined(__GLIBC__) && (__GLIBC__ < 3) && (__GLIBC_MINOR__ < 14)
int getnameinfo (const struct sockaddr * sa, int getnameinfo (const struct sockaddr * sa,
socklen_t salen, char *host, socklen_t hostlen, char *serv, socklen_t servlen, unsigned int flags) socklen_t salen, char * host,
socklen_t hostlen, char * serv,
socklen_t servlen, unsigned int flags)
#else #else
int getnameinfo (const struct sockaddr * sa, int getnameinfo (const struct sockaddr * sa,
socklen_t salen, char *host, socklen_t hostlen, char *serv, socklen_t servlen, int flags) socklen_t salen, char * host,
socklen_t hostlen, char * serv,
socklen_t servlen, int flags)
#endif #endif
{ {
char ip_buf[16];
int ret = 0; int ret = 0;
INIT(); if(!init_l)
init_lib();
PDEBUG("getnameinfo: %s %s\n", host, serv); PDEBUG("getnameinfo: %s %s\n", host, serv);
if(!proxychains_resolver) { if(!proxychains_resolver) {
ret = true_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags); ret = true_getnameinfo(sa,salen,host,hostlen,
serv,servlen,flags);
} else { } else {
if(hostlen) { if(hostlen)
inet_ntop(AF_INET, (unsigned char*) &(SOCKADDR_2(*sa)), ip_buf, sizeof(ip_buf)); strncpy(host, inet_ntoa(SOCKADDR_2(*sa)),hostlen);
strncpy(host, ip_buf, hostlen);
}
if(servlen) if(servlen)
snprintf(serv, servlen,"%d",ntohs(SOCKPORT(*sa))); snprintf(serv, servlen,"%d",ntohs(SOCKPORT(*sa)));
} }
return ret; return ret;
} }
#if (defined __linux__) || (defined __APPLE__) // stolen from libulz (C) rofl0r
struct hostent *gethostbyaddr(const void *addr, socklen_t len, int type) { static void pc_stringfromipv4(unsigned char* ip_buf_4_bytes, char* outbuf_16_bytes) {
#else unsigned char* p;
struct hostent *gethostbyaddr(const char *addr, socklen_t len, int type) { char *o = outbuf_16_bytes;
#endif unsigned char n;
for(p = ip_buf_4_bytes; p < ip_buf_4_bytes + 4; p++) {
n = *p;
if(*p >= 100) {
if(*p >= 200) *(o++) = '2';
else *(o++) = '1';
n %= 100;
}
if(*p >= 10) {
*(o++) = (n / 10) + '0';
n %= 10;
}
*(o++) = n + '0';
*(o++) = '.';
}
o[-1] = 0;
}
struct hostent *gethostbyaddr (const void *addr, socklen_t len, int type)
{
static char buf[16]; static char buf[16];
static char ipv4[4]; static char ipv4[4];
static char* list[2]; static char* list[2];
static struct hostent he; static struct hostent he;
INIT(); if(!init_l)
init_lib();
PDEBUG("TODO: proper gethostbyaddr hook\n"); PDEBUG("TODO: proper gethostbyaddr hook\n");
@ -570,8 +487,7 @@ struct hostent *gethostbyaddr(const char *addr, socklen_t len, int type) {
else { else {
PDEBUG("len %u\n", len); PDEBUG("len %u\n", len);
if(len != 4) if(len != 4) return NULL;
return NULL;
he.h_name = buf; he.h_name = buf;
memcpy(ipv4, addr, 4); memcpy(ipv4, addr, 4);
list[0] = ipv4; list[0] = ipv4;
@ -580,8 +496,9 @@ struct hostent *gethostbyaddr(const char *addr, socklen_t len, int type) {
he.h_addrtype = AF_INET; he.h_addrtype = AF_INET;
he.h_aliases = NULL; he.h_aliases = NULL;
he.h_length = 4; he.h_length = 4;
inet_ntop(AF_INET, addr, buf, sizeof(buf)); pc_stringfromipv4((unsigned char*)addr, buf);
return &he; return &he;
} }
return NULL; return NULL;
} }

View File

@ -1,4 +1,12 @@
/* (C) 2011, 2012 rofl0r /***************************************************************************
main.c - description
begin : Tue May 14 2002
copyright : netcreature (C) 2002
email : netcreature@users.sourceforge.net
***************************************************************************/
/* GPL */
/***************************************************************************
* * * *
* This program is free software; you can redistribute it and/or modify * * This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by * * it under the terms of the GNU General Public License as published by *
@ -6,42 +14,42 @@
* (at your option) any later version. * * (at your option) any later version. *
* * * *
***************************************************************************/ ***************************************************************************/
#undef _POSIX_C_SOURCE #undef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 200809L #define _POSIX_C_SOURCE 200809L
#undef _XOPEN_SOURCE #undef _XOPEN_SOURCE
#define _XOPEN_SOURCE 700 #define _XOPEN_SOURCE 700
#include <sys/types.h>
#include <sys/param.h>
#include <errno.h>
#include <stdio.h> #include <stdio.h>
#include <unistd.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <unistd.h> #include <errno.h>
#include <sys/types.h>
#include <sys/wait.h> #include <sys/wait.h>
extern char *optarg;
extern int optind, opterr, optopt;
#include "common.h" #include "common.h"
static int usage(char** argv) { static int usage(char** argv) {
printf( "\nProxychains4: %d.%d.%d\n" printf( "\nUsage:\t%s -q -f config_file program_name [arguments]\n"
"Usage:\t%s -q -f config_file program_name [arguments]\n"
"\t-v print version and exit\n"
"\t-q makes proxychains quiet - this overrides the config setting\n" "\t-q makes proxychains quiet - this overrides the config setting\n"
"\t-f allows to manually specify a configfile to use\n" "\t-t allows to manually specify a configfile to use\n"
"\n\tfor example : proxychains telnet somehost.com\n" "\tfor example : proxychains telnet somehost.com\n"
"\n\tMore help in README file\n\n", PROXYCHAINS_VERSION_MAJOR, "More help in README file\n\n", argv[0]);
PROXYCHAINS_VERSION_MINOR, PROXYCHAINS_VERSION_BUGFIX, argv[0]);
return EXIT_FAILURE; return EXIT_FAILURE;
} }
static const char *dll_name = DLL_NAME; int check_path(char* path) {
if(!path) return 0;
return access(path, R_OK) != -1;
}
static const char* dll_name = "libproxychains4.so";
static char own_dir[256]; static char own_dir[256];
static const char* dll_dirs[] = { static const char* dll_dirs[] = {
//".", ".",
own_dir, own_dir,
LIB_DIR, LIB_DIR,
"/lib", "/lib",
@ -53,69 +61,87 @@ static const char *dll_dirs[] = {
static void set_own_dir(const char* argv0) { static void set_own_dir(const char* argv0) {
size_t l = strlen(argv0); size_t l = strlen(argv0);
while(l && argv0[l - 1] != '/') while(l && argv0[l - 1] != '/') l--;
l--;
if(l == 0) if(l == 0)
//memcpy(own_dir, ".", 2); memcpy(own_dir, ".", 2);
memcpy(own_dir, "/dev/null/", 2);
else { else {
memcpy(own_dir, argv0, l - 1); memcpy(own_dir, argv0, l - 1);
own_dir[l] = 0; own_dir[l] = 0;
} }
} }
#define MAX_COMMANDLINE_FLAGS 2
int main(int argc, char *argv[]) { int main(int argc, char *argv[]) {
char *path = NULL; char *path = NULL;
char buf[PATH_MAX]; char buf[256];
char pbuf[PATH_MAX]; char pbuf[256];
int opt;
int start_argv = 1; int start_argv = 1;
int quiet = 0; int quiet = 0;
size_t i;
const char *prefix = NULL; if(argc == 1) return usage(argv);
for(i = 0; i < MAX_COMMANDLINE_FLAGS; i++) { while ((opt = getopt(argc, argv, "qf:")) != -1) {
if(start_argv < argc && argv[start_argv][0] == '-') { switch (opt) {
if(argv[start_argv][1] == 'q') { case 'q':
quiet = 1; quiet = 1;
start_argv++; start_argv++;
} else if(argv[start_argv][1] == 'v') {
printf("Proxychains4 version: %d.%d.%d\n", PROXYCHAINS_VERSION_MAJOR, PROXYCHAINS_VERSION_MINOR, PROXYCHAINS_VERSION_BUGFIX);
exit(EXIT_SUCCESS);
} else if(argv[start_argv][1] == 'f') {
if(start_argv + 1 < argc)
path = argv[start_argv + 1];
else
return usage(argv);
start_argv += 2;
}
} else
break; break;
case 'f':
path = (char *)optarg;
if(!path) {
fprintf(stderr, "error: no path supplied.\n");
return EXIT_FAILURE;
}
start_argv += 2;
break;
default: /* '?' */
return usage(argv);
}
} }
if(start_argv >= argc) if(start_argv >= argc) return usage(argv);
return usage(argv);
/* check if path of config file has not been passed via command line */ /* check if path of config file has not been passed via command line */
path = get_config_path(path, pbuf, sizeof(pbuf)); if(!path) {
if(!quiet) // priority 1: env var PROXYCHAINS_CONF_FILE
fprintf(stderr, LOG_PREFIX "config file found: %s\n", path); path = getenv(PROXYCHAINS_CONF_FILE_ENV_VAR);
if(check_path(path)) goto have;
// priority 2; proxychains conf in actual dir
path = getcwd(buf, sizeof(buf));
snprintf(pbuf, sizeof(pbuf), "%s/%s", path, PROXYCHAINS_CONF_FILE);
path = pbuf;
if(check_path(path)) goto have;
// priority 3; $HOME/.proxychains/proxychains.conf
path = getenv("HOME");
snprintf(pbuf, sizeof(pbuf), "%s/.proxychains/%s", path, PROXYCHAINS_CONF_FILE);
path = pbuf;
if(check_path(path)) goto have;
// priority 4: /etc/proxychains.conf
path = "/etc/proxychains.conf";
if(check_path(path)) goto have;
perror("couldnt find configuration file");
return 1;
}
have:
if(!quiet) fprintf(stderr, LOG_PREFIX "config file found: %s\n", path);
/* Set PROXYCHAINS_CONF_FILE to get proxychains lib to use new config file. */ /* Set PROXYCHAINS_CONF_FILE to get proxychains lib to use new config file. */
setenv(PROXYCHAINS_CONF_FILE_ENV_VAR, path, 1); setenv(PROXYCHAINS_CONF_FILE_ENV_VAR, path, 1);
if(quiet) if(quiet) setenv(PROXYCHAINS_QUIET_MODE_ENV_VAR, "1", 1);
setenv(PROXYCHAINS_QUIET_MODE_ENV_VAR, "1", 1);
// search DLL // search DLL
size_t i = 0;
const char* prefix = NULL;
set_own_dir(argv[0]); set_own_dir(argv[0]);
i = 0;
while(dll_dirs[i]) { while(dll_dirs[i]) {
snprintf(buf, sizeof(buf), "%s/%s", dll_dirs[i], dll_name); snprintf(buf, sizeof(buf), "%s/%s", dll_dirs[i], dll_name);
if(access(buf, R_OK) != -1) { if(access(buf, R_OK) != -1) {
@ -126,21 +152,14 @@ int main(int argc, char *argv[]) {
} }
if(!prefix) { if(!prefix) {
fprintf(stderr, "couldn't locate %s\n", dll_name); fprintf(stderr, "couldnt locate %s\n", dll_name);
return EXIT_FAILURE; return EXIT_FAILURE;
} }
if(!quiet) fprintf(stderr, LOG_PREFIX "preloading %s/%s\n", prefix, dll_name);
if(!quiet) snprintf(buf, sizeof(buf), "LD_PRELOAD=%s/%s", prefix, dll_name);
fprintf(stderr, LOG_PREFIX "preloading %s/%s\n", prefix, dll_name);
#ifndef IS_MAC putenv(buf);
snprintf(buf, sizeof(buf), "%s/%s", prefix, dll_name);
setenv("LD_PRELOAD", buf, 1);
#else
snprintf(buf, sizeof(buf), "%s/%s", prefix, dll_name);
setenv("DYLD_INSERT_LIBRARIES", buf, 1);
setenv("DYLD_FORCE_FLAT_NAMESPACE", "1", 1);
#endif
execvp(argv[start_argv], &argv[start_argv]); execvp(argv[start_argv], &argv[start_argv]);
perror("proxychains can't load process...."); perror("proxychains can't load process....");

View File

@ -1,106 +1,26 @@
#!/bin/sh #!/bin/sh
echo "ProxyChains-4.0 (https://github.com/haad/proxychains)" echo "ProxyChains-3.1 (http://proxychains.sf.net)"
usage() { usage() {
echo " usage:" echo " usage:"
echo " $0 [hqv] [-f config-file] <prog> [args]" echo " $0 [h] [f config-file] <prog> [args]"
echo " -q make proxychains quiet"
exit exit
} }
find_proxy_conf() {
show_proxy_env
if [ -f "/usr/local/etc/proxychains.conf" ]; then
export PROXYCHAINS_CONF_FILE="/usr/local/etc/proxychains.conf"
else
if [ -f "/etc/proxychains.conf" ];then
PROXYCHAINS_CONF_FILE="/etc/proxychains.conf"
fi
fi
}
#
# XXX We should not overide possible user settings here. Just add libproxychains to it.
#
setup_proxy_env() {
if [ -z "$PROXYCHAINS_CONF_FILE" ]; then
find_proxy_conf
fi
if [ $(uname -s) = "Darwin" ]; then
export DYLD_FORCE_FLAT_NAMESPACE=
export DYLD_INSERT_LIBRARIES=libproxychains4.dylib
else
export LD_PRELOAD=libproxychains.so.4
fi
}
disable_proxy_env() {
if [ $(uname -s) = "Darwin" ]; then
unset DYLD_FORCE_FLAT_NAMESPACE
export DYLD_INSERT_LIBRARIES=$(echo $DYLD_INSERT_LIBRARIES | sed -e 's/libproxychains4.dylib//g')
if [ -z $DYLD_INSERT_LIBRARIES ]; then
unset DYLD_INSERT_LIBRARIES
fi
else
export LD_PRELOAD=$(echo $DYLD_INSERT_LIBRARIES | sed -e 's/libproxychains.so.4//g')
if [ -z $LD_PRELOAD ]; then
unset LD_PRELOAD
fi
fi
}
show_proxy_env() {
echo "Proxified environment setup"
echo "PROXYCHAINS_CONF_FILE = $PROXYCHAINS_CONF_FILE"
if [ $(uname -s) = "Darwin" ]; then
echo "DYLD_FORCE_FLAT_NAMESPACE = $DYLD_FORCE_FLAT_NAMESPACE"
echo "DYLD_INSERT_LIBRARIES = $DYLD_INSERT_LIBRARIES"
else
echo "LD_PRELOAD = $LD_PRELOAD"
fi
}
if [ $# = 0 ] ; then if [ $# = 0 ] ; then
usage usage
fi fi
case "$1" in if [ $1 = "-h" ]; then
-h)
usage usage
;; fi
-f)
if [ "$1" = "-f" ]; then
export PROXYCHAINS_CONF_FILE=$2; export PROXYCHAINS_CONF_FILE=$2;
shift; shift;
shift; shift;
;; fi
-q)
export PROXYCHAINS_QUIET_MODE=1;
shift;
;;
show)
show_proxy_env
return
;;
esac
case "$1" in export LD_PRELOAD=libproxychains.so.3
on)
setup_proxy_env
show_proxy_env
;;
off)
disable_proxy_env
show_proxy_env
;;
*)
setup_proxy_env
exec "$@" exec "$@"
;;
esac

View File

@ -1,4 +1,4 @@
# proxychains.conf VER 4 # proxychains.conf VER 3.1
# #
# HTTP, SOCKS4, SOCKS5 tunneling proxifier with DNS. # HTTP, SOCKS4, SOCKS5 tunneling proxifier with DNS.
# #
@ -37,32 +37,10 @@ strict_chain
# Proxy DNS requests - no leak for DNS data # Proxy DNS requests - no leak for DNS data
proxy_dns proxy_dns
# set the class A subnet number to usefor use of the internal remote DNS mapping
# we use the reserved 224.x.x.x range by default,
# if the proxified app does a DNS request, we will return an IP from that range.
# on further accesses to this ip we will send the saved DNS name to the proxy.
# in case some control-freak app checks the returned ip, and denies to
# connect, you can use another subnet, e.g. 10.x.x.x or 127.x.x.x.
# of course you should make sure that the proxified app does not need
# *real* access to this subnet.
# i.e. dont use the same subnet then in the localnet section
#remote_dns_subnet 127
#remote_dns_subnet 10
remote_dns_subnet 224
# Some timeouts in milliseconds # Some timeouts in milliseconds
tcp_read_time_out 15000 tcp_read_time_out 15000
tcp_connect_time_out 8000 tcp_connect_time_out 8000
# By default enable localnet for loopback address ranges
# RFC5735 Loopback address range
localnet 127.0.0.0/255.0.0.0
# RFC1918 Private Address Ranges
# localnet 10.0.0.0/255.0.0.0
# localnet 172.16.0.0/255.240.0.0
# localnet 192.168.0.0/255.255.0.0
# Example for localnet exclusion # Example for localnet exclusion
## Exclude connections to 192.168.1.0/24 with port 80 ## Exclude connections to 192.168.1.0/24 with port 80
# localnet 192.168.1.0:80/255.255.255.0 # localnet 192.168.1.0:80/255.255.255.0
@ -73,24 +51,6 @@ localnet 127.0.0.0/255.0.0.0
## Exclude connections to ANYwhere with port 80 ## Exclude connections to ANYwhere with port 80
# localnet 0.0.0.0:80/0.0.0.0 # localnet 0.0.0.0:80/0.0.0.0
### Examples for dnat
## Trying to proxy connections to destinations which are dnatted,
## will result in proxying connections to the new given destinations.
## Whenever I connect to 1.1.1.1 on port 1234 actually connect to 1.1.1.2 on port 443
# dnat 1.1.1.1:1234 1.1.1.2:443
## Whenever I connect to 1.1.1.1 on port 443 actually connect to 1.1.1.2 on port 443
## (no need to write :443 again)
# dnat 1.1.1.2:443 1.1.1.2
## No matter what port I connect to on 1.1.1.1 port actually connect to 1.1.1.2 on port 443
# dnat 1.1.1.1 1.1.1.2:443
## Always, instead of connecting to 1.1.1.1, connect to 1.1.1.2
# dnat 1.1.1.1 1.1.1.2
# ProxyList format # ProxyList format
# type host port [user pass] # type host port [user pass]
# (values separated by 'tab' or 'blank') # (values separated by 'tab' or 'blank')
@ -104,13 +64,12 @@ localnet 127.0.0.0/255.0.0.0
# http 192.168.39.93 8080 # http 192.168.39.93 8080
# #
# #
# proxy types: http, socks4, socks5, raw # proxy types: http, socks4, socks5
# * raw: The traffic is simply forwarded to the proxy without modification.
# ( auth types supported: "basic"-http "user/pass"-socks ) # ( auth types supported: "basic"-http "user/pass"-socks )
# #
[ProxyList] [ProxyList]
# add proxy here ... # add proxy here ...
# meanwhile # meanwile
# defaults set to "tor" # defaults set to "tor"
socks4 127.0.0.1 9050 socks4 127.0.0.1 9050

View File

@ -2,12 +2,8 @@
# This script is called by proxychains to resolve DNS names # This script is called by proxychains to resolve DNS names
# DNS server used to resolve names # DNS server used to resolve names
DNS_SERVER=4.2.2.2
if [ -z "$PROXY_DNS_SERVER" ] ; then
DNS_SERVER=208.67.222.222 # OpenDNS
else
DNS_SERVER=$PROXY_DNS_SERVER
fi
if [ $# = 0 ] ; then if [ $# = 0 ] ; then
echo " usage:" echo " usage:"
@ -15,10 +11,6 @@ if [ $# = 0 ] ; then
exit exit
fi fi
awk 'BEGIN{ARGC=0} {for(i=2;i<=NF;i++){if($i==ARGV[1] && $1!~":"){print $1;found=1}} } END{exit found?0:1}' "$1" </etc/hosts
if [ "$?" -eq "0" ]; then
exit
fi
export LD_PRELOAD=libproxychains.so export LD_PRELOAD=libproxychains.so
drill $1 @$DNS_SERVER -t | awk '/A.+[0-9]+\.[0-9]+\.[0-9]/{print $5;}' dig $1 @$DNS_SERVER +tcp | awk '/A.+[0-9]+\.[0-9]+\.[0-9]/{print $5;}'

View File

@ -1,41 +0,0 @@
#include <stdio.h>
#include <stdlib.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#ifndef NI_MAXHOST
#define NI_MAXHOST 1025
#endif
int main(void) {
struct addrinfo *result;
struct addrinfo *res;
int error;
/* resolve the domain name into a list of addresses */
error = getaddrinfo("www.example.com", NULL, NULL, &result);
if (error != 0)
{
fprintf(stderr, "error in getaddrinfo: %s\n", gai_strerror(error));
return EXIT_FAILURE;
}
/* loop over all returned results and do inverse lookup */
for (res = result; res != NULL; res = res->ai_next)
{
char hostname[NI_MAXHOST] = "";
error = getnameinfo(res->ai_addr, res->ai_addrlen, hostname, NI_MAXHOST, NULL, 0, 0);
if (error != 0)
{
fprintf(stderr, "error in getnameinfo: %s\n", gai_strerror(error));
continue;
}
if (*hostname != '\0')
printf("hostname: %s\n", hostname);
}
freeaddrinfo(result);
return EXIT_SUCCESS;
}