proxychains-ng

configure: check for -pthread vs -lpthread (#379 )

rofl0r · 2021-04-30 16:15:30 +01:00

6af2686a52

experimental new feature: proxy_dns_daemon

since many users complain about issues with modern, ultracomplex
clusterfuck software such as chromium, nodejs, etc, i've reconsidered
one of my original ideas how to implement remote dns lookup support.
instead of having a background thread serving requests via a pipe,
the user manually starts a background daemon process before running
proxychains, and the two processes then communicate via UDP.
this requires much less hacks (like hooking of close() to prevent
pipes from getting closed) and doesn't need to call any async-signal
unsafe code like malloc(). this means it should be much more compatible
than the previous method, however it's not as practical and slightly
slower.

it's recommended that the proxychains4-daemon runs on localhost, and
if you use proxychains-ng a lot you might want to set ip up as a service
that starts on boot. a single proxychains4-daemon should theoretically
be able to serve many parallel proxychains4 instances, but this has not
yet been tested so far. it's also possible to run the daemon on other
computers, even over internet, but currently there is no error-checking/
timeout code at all; that means the UDP connection needs to be very
stable.

the library code used for the daemon sources are from my projects
libulz[0] and htab[1], and the server code is loosely based on
microsocks[2]. their licenses are all compatible with the GPL.
if not otherwise mentioned, they're released for this purpose under
the standard proxychains-ng license (see COPYING).

[0]: https://github.com/rofl0r/libulz
[1]: https://github.com/rofl0r/htab
[2]: https://github.com/rofl0r/microsocks

rofl0r · 2020-09-23 22:14:39 +01:00

7fe8139496

get rid of ip_type.c

rofl0r · 2020-09-23 17:00:16 +01:00

1e00b9ac1e

get own_dir by using dladdr() instead of argv[0]

Solar Flare · 2019-11-27 00:32:08 +08:00

b8fa2a7405

configure: Solaris detection, ld 'soname' option auto detection; other Solaris related fixes

WHR · 2018-01-11 00:45:40 +08:00

35a674bdbc

Revert "Makefile: suppress pedantic warnings in user CFLAGS"

This reverts commit 6ae959e051.

It appears as if -pedantic is special in that there is no option
to disable it.

rofl0r · 2016-12-24 12:49:14 +00:00

cd4ced1d52

Makefile: suppress pedantic warnings in user CFLAGS

rofl0r · 2016-12-13 20:42:50 +00:00

6ae959e051

Fix build failure with -pie in user LDFLAGS

When hardening flags are set by Debian's auto build system,
the project fails to build due to usage of -pie, which tells the linker
to build a PIE binary, and since the user LDFLAGS are deliberately put
later in the command line to override things, this overrides -shared.
work around by putting it directly in the last position of the linker
command line.

closes #124
Commit message authored by commiter.

Carlos Maddela · 2016-06-09 21:07:33 +01:00

635ded3393

fix segfault in DNS mapping lookup code

the allocatorthread got pointers to RAM which were reallocated
behind the back, and if realloc() couldn't grow in-place, lead
to segfaults in applications that do a lot of DNS-lookups such
as webbrowsers.

closes #66
closes #31

thanks to @ravomavain for tracking down the issue.

rofl0r · 2015-06-06 11:43:53 +01:00

2182eff358

configure: respect user LDFLAGS without breaking link order

rofl0r · 2015-06-04 21:11:08 +01:00

53c6c2ca9b

Revert "Fix LDFLAGS"

This reverts commit e79e05a228.

This commit broke link order for a number of people.

rofl0r · 2015-06-04 21:04:30 +01:00

c9c51d6705

Revert "fix makefile link order"

This reverts commit 377b474b40.

There still are problems with the link order.
Revert to the known-good version.

rofl0r · 2015-06-04 21:03:25 +01:00

fda4ba37ec

fix makefile link order

jackyzy823 · 2015-04-03 22:37:26 +08:00

377b474b40

Fix LDFLAGS

- Use user-supplied LDFLAGS
- Use LDFLAGS for linking proxychains4

Till Maas · 2015-03-15 11:46:31 +01:00

e79e05a228

replace problematic hostentdb with hostsreader

the hostentdb introduced between 4.2 and 4.3
(via af5c6f0c6a )
had several issues:
- it caused breakage on FreeBSD and was commented out there
- prevented usage of the hostdb when proxy_dns was turned off
  (issue #42)
- required dynamic memory allocation which was accessed from several
  threads
- wouldnt reflect changes to the hosts file made during program run

the only sensible solution is to remove the hostentdb and replace it
with a home-grown hosts parser (we can't use gethostent() since
that would mess up the gethostent()-state from different threads).

the new parser used here is deliberately held simple and only meant
to provide the user with means to reference hardcoded ipv4 addresses
via his hosts file.

fixes #42

rofl0r · 2014-11-14 12:33:58 +01:00

4fb7eb0532

fix regression in install-config Makefile target

closes #34

rofl0r · 2014-07-22 17:21:14 +02:00

d8a08707e7

use musl's install.sh rather than doing workarounds for BSD install

rofl0r · 2014-07-22 14:32:27 +02:00

6143266edd

print proxychains version on DLL init

framework to print version stolen from musl

rofl0r · 2014-07-22 14:10:11 +02:00

cd4aee1997

Makefile: respect CPPFLAGS

rofl0r · 2014-02-02 09:49:21 +01:00

69abe128ca

Makefile: add proper dependency info for install targets

rofl0r · 2014-02-02 09:46:57 +01:00

3dd2fa7782

Add DUMP_PROXY_CHAIN for debug builds and debug.c.

crass · 2013-06-25 12:56:41 +02:00

5c4c166802

Makefile: prevent from using 2 slashes (cosmetic change)

rofl0r · 2013-02-10 12:38:05 +01:00

73ff65ed76

Makefile: add install-data to .PHONY

rofl0r · 2013-01-06 19:33:34 +01:00

5d7715551d

Makefile: put include config later so the program name can be overridden

rofl0r · 2013-01-06 19:26:01 +01:00

4f7363efbc

FreeBSD support

rofl0r · 2012-12-25 19:08:05 +01:00

5526afb56d

fix for mac build error

closes #6

rofl0r · 2012-12-18 09:42:17 +01:00

ab4fb353b6

fix the never-ending issues with the wrong glibc prototype of getnameinfo

this bug was fixed shortly before 2.14 release, so we checked for that.
however some distros decided to backport this fix to earlier versions,
breaking our compiletime check.

http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=e4ecafe004b3d4270b3a9dace8f970047400ed38

the portable solution is to stick the function into a separate comilation
unit that does not see the glibc prototype.

closes #7

rofl0r · 2012-12-17 22:17:04 +01:00

ce655fdac8

replace hostent lookup with better performing in-memory copy.

the central dns resolver function proxy_gethostbyname() used
to iterate over the gethostent() db (/etc/hosts) on each dns
request.
since this is not threadsafe, we synchronized access to it
previously using mutexes. the parsing of this file is slow,
and blocking all threads to do it even moreso.
since gethostent_r() is only available on a few platforms,
i decided to read the hostent db once and then use a quick
in-memory lookup on further usage.

+ some further refactoring.

rofl0r · 2012-11-08 01:18:19 +01:00

af5c6f0c6a

remove THREAD_SAFE ifdefs. from now on, pthreads are required.

additionally we have some explicit init and deinit routines for
core.c now, so that we dont need to share variables with
libproxychains.c.

rofl0r · 2012-11-07 21:31:19 +01:00

03ee84060e

preliminary first fork-safe version

instead of allocating memory in the child, we now use the allocator
thread to do all the necessary allocations himself.
additionally we provide a clean API to query the ip <-> dns mapping.
these functions connect via a pipe to the allocator thread, and
exchange messages.

further cleanup is needed, but it seems to work so far.
thread-safety is not yet guaranteed.

closes #1

rofl0r · 2012-11-07 21:31:11 +01:00

d0abc93c74

failed attempt to use shared memory for the ip <-> dns mapping

this is in order to get irssi, which forks for DNS lookups,
and similar programs, to work as intended.

in a previous attempt i learned that shared memory created in a
child process is not visible to the parent;
in this attempt i spin off a thread from the parent which listens
on a pipe and manages the shared memory allocation from the parent
address-space. however this doesnt work as expected:
memory allocated in the parent after the child forked is not visi-
ble to the child as well.

so what happens is: irssi starts a child process, the thread allocs
memory and hands it to the child, the child attempts to write and
segfaults. however irssi doesnt crash. since now the memory is
already allocated, doing the dns lookup again will succeed.

i.e. the dns lookup works now in irssi by luck.
all but the first dns lookups will suceed.

however this is not good enough for me to be satisfied, i commit
this only for documentation purposes.

rofl0r · 2012-11-07 16:49:14 +01:00

25afe98b20

fix issues with pthread and dlsym symbols on ubuntu 12.04

for some reason, the linker needs --no-as-needed for both
libdl and libpthread.

closes #4

thanks to @tomsawyer for discovering this.

the proposed -pthread change was not needed though,
and this is a good thing since it seems not portable.

rofl0r · 2012-11-04 01:21:29 +01:00

6f35888528

Makefile: put config into new install-config target

rofl0r · 2012-07-16 02:36:35 +02:00

a4f3dd0538

use config file lookup routine from a common place

rofl0r · 2012-07-08 23:32:50 +02:00

fba5f5694c

Makefile: create destination dirs in case they do not exist

rofl0r · 2012-03-07 18:05:04 +01:00

1000366f88

Makefile: add support for DESTDIR