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Initial commit of prtunnel 0.2.7 (released March 12, 2006)
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‎ChangeLog

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Sun Mar 12 2006 Josh Beam <josh@joshbeam.com>
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* proxy.c: Made prt_context_list_resize() not attempt to do malloc(0)
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when the size parameter is 0, which was causing problems on some
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systems. Thanks to Jean-Francois Pirus for sending a fix for this.
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* prtunnel.h, proxy.c, direct.c, direct6.c, http.c, socks5.c:
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Made the protocol-specific connect functions set the server timeout
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so that the program doesn't hang if a server timeout is specified and
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a proxy doesn't respond.
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* main.c, prtunnel.1, README: Updated version/date.
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* prtunnel: Releasing 0.2.7.
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Mon Jan 09 2006 Josh Beam <josh@joshbeam.com>
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* main.c, prtunnel.1, README: Updated version/date.
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* prtunnel: Releasing 0.2.6.
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Sun Jan 08 2006 Josh Beam <josh@joshbeam.com>
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* prtunnel: Applied a patch from Frediano Ziglio that modifies
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most of the source files to improve win32 support, adds a
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Visual Studio NMAKE file, and makes some other changes.
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* getopt.c, getopt.h: New files containing a simple getopt function
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to be used on win32.
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Sun May 15 2005 Josh Beam <josh@joshbeam.com>
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* prtunnel.1, README: Updated date.
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* prtunnel: Releasing 0.2.5.
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Sun May 08 2005 Josh Beam <josh@joshbeam.com>
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* proxy.c: Applied patch from Vasil Dimov that makes the local_socks
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variable in prt_tcp_handle_connection() initialized to 0. This fixes
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a problem where SOCKS data would sometimes be sent to clients that
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were not using SOCKS to connect.
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* connect.c, direct.c, direct6.c, http.c,main.c, proxy.c, prtunnel.h,
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socks5.c: Replaced all calls to read(2) with calls to recv(2). Made
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some changes to help with compiling for win32 systems.
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* main.c, prtunnel.1, README: Updated version.
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Tue Jun 29 2004 Josh Beam <josh@joshbeam.com>
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* proxy.c: Added missing free(readfds) call in prt_tcp_loop().
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* main.c, README, prtunnel.1: Updated version.
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* prtunnel: Releasing 0.2.4. Thanks to Ulrik Petersen for reporting
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and help in debugging crashes caused by the bugs mentioned in the
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last ChangeLog update.
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Sun Jun 27 2004 Josh Beam <josh@joshbeam.com>
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* proxy.c: Fixed an overrun problem with prt_context_list_resize()
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when making a prt_context_list smaller. Fixed possible fd_set
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overflow.
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* http.c, socks5.c: Changed all gethostbyname calls to gethostbyname2
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calls when IPv6 is enabled.
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Thu Jun 10 2004 Josh Beam <josh@joshbeam.com>
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* proxy.c: Made prt_tcp_handle_connection call loop until a successful
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connection is made when not in daemon mode.
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* main.c, README, prtunnel.1: Updated version.
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* prtunnel: Releasing 0.2.3.
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Sun Jun 06 2004 Josh Beam <josh@joshbeam.com>
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* proxy.c: Rewrote much of the connection handling code over the past
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few days. All connections are now handled in a single process.
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* main.c: Got rid of --max-processes option, since it's now obsolete.
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* README, prtunnel.1: Removed --max-processes stuff.
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Sat May 22 2004 Josh Beam <josh@joshbeam.com>
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* prtunnel: Releasing 0.2.2.
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Fri May 21 2004 Josh Beam <josh@joshbeam.com>
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* main.c: Applied a patch (with some modifications by myself) from
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Diaconescu Bogdan which adds a proxy username and password prompt.
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* README, prtunnel.1: Updated with info on the --password-prompt
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option and updated the prtunnel web page URL.
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Sat Sep 06 2003 Josh Beam <josh@joshbeam.com>
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* prtunnel: Releasing 0.2.1.
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Wed Sep 03 2003 Josh Beam <josh@joshbeam.com>
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* http.c: Changed read_byte extern prototype from returning char (as
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the function used to) to returning int (as it now does).
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* proxy.c, prtunnel.h: Added missing #ifdef IPV6 stuff. Thanks to
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Daniel Kluge for sending a patch.
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Wed Aug 13 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: Made prt_tcp_loop return -1 if socks_method fails.
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Made daemon process in prt_tcp_loop close context->localfd if
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it successfully forks a child process to handle the connection.
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* prtunnel: Releasing 0.2.0.
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Tue Aug 12 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: Removed unused arguments from prt_tcp_loop definition.
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Made accept call IPv6 compatible and added context->sockaddr_len
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initialization before accept call.
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Added missing close call after recieving a connection from a
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non-trusted address.
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Fixed broken get_seconds function.
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* main.c, proxy.c: Changed keepalive variables from int to
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unsigned long.
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Mon Aug 11 2003 Josh Beam <josh@joshbeam.com>
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* http.c: Added use_http_1_0 argument to http_negotiate function,
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instead of having http_negotiate access the flags directly.
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Tue Aug 05 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: Added proper memory allocation error handling in
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the socks_method function, and #if 0'd out some udp functions
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that aren't used yet.
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Mon Jul 14 2003 Josh Beam <josh@joshbeam.com>
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* prtunnel: Massive code cleanups. The proxy.c file is basically
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being completely rewritten; this will take a while to finish.
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The prt_context struct was added, and the code for all protocols
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now uses it.
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Sat Jul 05 2003 Josh Beam <josh@joshbeam.com>
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* README, prtunnel.1: Documented --timeout and --server-timeout.
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* prtunnel: Releasing 0.1.8.
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Fri Jul 04 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c, main.c: Added --server-timeout option.
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Tue Jul 01 2003 Josh Beam <josh@joshbeam.com>
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* socks5.c: Added "Bad response from SOCKS5 server" error messages.
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Fri Jun 20 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c, main.c: Added --timeout option.
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Wed Jun 18 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: Fixed is_trusted_address() IPv6 handling. Before, it would
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return 1 (true) if the first four bytes of an address matched those
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of a trusted address, which worked as expected for IPv4 but not IPv6.
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* proxy.c, main.c: Added max-processes stuff.
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* README, prtunnel.1: Documented max-processes stuff.
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* main.c: Fixed segfault when specifying an option that takes an argument
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but there aren't enough arguments given.
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* prtunnel: Releasing 0.1.7.
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Wed Apr 02 2003 Josh Beam <josh@joshbeam.com>
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* http.c: Put "Host" line in HTTP/1.1 commands.
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* prtunnel: Releasing 0.1.6.
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Tue Apr 01 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c, http.c, socks5.c, Makefile: Removed #define _GNU_SOURCE from
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the C source files and added -D_GNU_SOURCE to the Makefile's CFLAGS.
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Fri Mar 28 2003 Josh Beam <josh@joshbeam.com>
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Applied patch from ZIGLIO Frediano, with some minor changes by me, that
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did the following:
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* connect.c: Added #include <string.h>, changed read_byte to return int
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and changed its char c variable to unsigned char c.
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* http.c, proxy.c: Added #define _GNU_SOURCE.
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* main.c: Allow one non-option argument to be given, setting remotehost
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to NULL and remoteport to 0.
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* proxy.c: Added socks_method and socks_method_connected functions,
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which accept and respond to socks commands if there's no predefined
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remotehost.
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* socks5.c: Added #define _GNU_SOURCE and #include <string.h>.
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Thu Mar 20 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: Removed commented out close(2) call.
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* prtunnel: Releasing 0.1.5, finally.
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Sat Mar 15 2003 Josh Beam <josh@joshbeam.com>
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* http.c, proxy.c: Changed second argument of shutdown(2) calls
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to SHUT_RDWR define instead of using an integer directly.
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Wed Mar 12 2003 Josh Beam <josh@joshbeam.com>
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* prtunnel.h, http.c, main.c: Added PRT_HTTP_1_0 flag, which, when
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set, causes the HTTP code to use HTTP/1.0 instead of HTTP/1.1.
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* http.c, proxy.c: Applied patch from Ury N. Stankevich that changes
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the HTTP commands to HTTP/1.1 by default and adds shutdown(2) calls
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before close(2) calls where needed.
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Tue Mar 11 2003 Josh Beam <josh@joshbeam.com>
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* prtunnel.h, proxy.c, main.c: Added PRT_KEEPALIVE_CRLF define
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and put it to use. This will use a carriage return plus line feed
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for keep-alive data.
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* prtunnel.h, proxy.c: Made bitcheck variable a signed int and use
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a value of -1 to mean no check. This fixes a problem that wouldn't
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allow a bitcheck of 0 to work. Thanks to Ury N. Stankevich for
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pointing out this problem.
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Mon Feb 10 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: Made keep-alive function send type-specific data and other
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minor changes.
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* prtunnel: Releasing 0.1.4.
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Sun Feb 09 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c, prtunnel.h: keepalive_type variable added to proxy.c and
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its PRT_KEEPALIVE_TELNET define added to prtunnel.h.
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* everywhere: --keep-alive option changed to --telnet-keep-alive.
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Fri Feb 07 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c, main.c: Added --keep-alive option and the code needed
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to use it.
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* documentation: Mention --keep-alive option.
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Thu Feb 06 2003 Josh Beam <josh@joshbeam.com>
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* prtunnel.h, main.c: Added PRT_IRC_AUTOPONG flag and
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--irc-auto-pong option to enable it.
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* proxy.c: Added check_incoming_data function for performing actions
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when certain data is recieved; currently just handles IRC PINGs.
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* documentation: Added info on --irc-auto-pong option.
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Wed Feb 05 2003 Josh Beam <josh@joshbeam.com>
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* documentation: Minor stuff.
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* proxy.c: Ditto.
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* prtunnel: Releasing 0.1.3.
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Tue Feb 04 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: Added SIGINT handler to close listening socket when
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quitting and made the exiting parent connection process close it
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if not in daemon mode.
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* http.c, socks5.c: Changed to connect with IPv6 if the IPv6 flag
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is set.
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* README, prtunnel.1: Describe -6 option for IPv6 use.
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Mon Feb 03 2003 Josh Beam <josh@joshbeam.com>
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* README, prtunnel.1: Slight changes to description paragraphs.
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Thu Jan 30 2003 Josh Beam <josh@joshbeam.com>
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* main.c, proxy.c: Did a whole bunch of stuff to support IPv6.
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Tue Jan 28 2003 Josh Beam <josh@joshbeam.com>
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* prtunnel.h: Added PRT_IPV6 flag.
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* documentation: Very slight changes.
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Mon Jan 27 2003 Josh Beam <josh@joshbeam.com>
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* connect.c: Added establish_connection6 function, which is an IPv6
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version of establish_connection.
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* direct6.c: New direct IPv6 tunneling mode; allows for tunneling of
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connections from IPv4 clients to IPv6 servers, for example.
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* documentation: Now mentions the direct6 mode.
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Thu Jan 09 2003 Josh Beam <josh@joshbeam.com>
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* http.c: send(2) was only called for the non-authorization CONNECT.
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No need to explain how stupid this was. Also added a couple of
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error messages that should help us find problems with connecting.
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* prtunnel: Releasing 0.1.2.
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Mon Jan 06 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: Ugh. Multiply sizeof(struct trusted_address) by
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num_trust_addrs PLUS 1, not num_trust_addrs.
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* prtunnel: Releasing 0.1.1 due to dumb typo described above; it's
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not a big deal though, so this is definitely just a minor update.
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Sun Jan 05 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: s/htons/ntohs/ in the printf about connection attempts
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from non-trusted addresses.
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* connect.c: Changed sizeof(struct sockaddr) to sizeof(sin) in the
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connect(2) call.
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Sat Jan 04 2003 Josh Beam <josh@joshbeam.com>
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* README: Make the description more similar with the ones on the
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website, freshmeat, etc.
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* prtunnel: Other minor changes, and released version 0.1.0.
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Fri Jan 03 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c, prtunnel.h: Added bitcheck to struct trusted_address and
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put it to use in the appropriate functions in proxy.c. Read the entry
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for the -T option in the man page to see what this does.
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* documentation: Stuff about the trusted_address bitcheck.
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* INSTALL: Added a reminder to read the man page, as it's pretty damn
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good compared to the --help message, which is getting crowded.
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* proxy.c: Made the bind_to error message a bit more informative.
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Thu Jan 02 2003 Josh Beam <josh@joshbeam.com>
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* proxy.c: Removed the wait(2) error message in proxy_kill();
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it was rather pointless.
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* proxy.c: Stuff to waitpid(2) for daemon child processes when they're
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done. Took a while to figure this one out.
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Wed Jan 01 2003 Josh Beam <josh@joshbeam.com>
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* main.c, proxy.c, prtunnel.h: Added struct trusted_address and
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put it to use a bit.
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* proxy.c: Added some missing close(2) calls.
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* main.c, proxy.c, prtunnel.h: Added the PRT_DAEMON flag and used it.
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See fw_proxy() in proxy.c for all of the scary accept(2) and fork(2)
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stuff.
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* all the documentation: Document new features.
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Sun Dec 29 2002 Josh Beam <josh@joshbeam.com>
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* proxy.c: Fixed up print_data a little; it's now a bit easier to
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differentiate between incoming/outgoing non-color output.
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* prtunnel.1: s/MISC/WEBSITE/, since the only thing in that section
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is the URL; describe non-color verbose output a bit.
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* README: Same stuff about non-color verbose output from man page.
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* prtunnel: Released version 0.0.4.
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Thu Dec 26 2002 Josh Beam <josh@joshbeam.com>
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* proxy.c, http.c, socks5.c: Print all status messages to stderr instead
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of just the ones indicating failure.
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* main.c, prtunnel.1, README: Make sure people know where to find the
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latest version.
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* prtunnel: Released version 0.0.3.
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Wed Dec 25 2002 Josh Beam <josh@joshbeam.com>
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* prtunnel.1: That's right, I wrote a man page! Merry Christmas!
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* Makefile: install/uninstall the man page.
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Tue Dec 24 2002 Josh Beam <josh@joshbeam.com>
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* socks5.c: Added SOCKS5 username/password authentication support.
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* socks5.c: Fixed possible buffer overflow with the hostname memcpy.
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* http.c, socks5.c: Added some more informative error messages.
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* proxy.c: usleep(500) before killing the processes. See the comments
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before the first usleep to see why; not a big deal.
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* proxy.c: fflush at the end of print_data.
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* prtunnel: Released version 0.0.2.

‎INSTALL

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To build and install, just run:
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make
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make install
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The prtunnel binary will be installed to /usr/local/bin/prtunnel by default.
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If you want a prefix other than /usr/local, change the PREFIX in the Makefile.
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To compile prtunnel without IPv6 support, you must comment out or remove the
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"CFLAGS+= -DIPV6" line in the Makefile.
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Read the man page (`man prtunnel') for information on using it.

‎Makefile

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PREFIX=/usr/local
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CC=gcc
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CFLAGS=-Wall -ansi -pedantic -D_GNU_SOURCE
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CFLAGS+= -DIPV6
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OBJS=connect.o direct.o direct6.o http.o socks5.o proxy.o main.o
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prtunnel: $(OBJS)
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$(CC) $(OBJS) -o prtunnel
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install:
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install -c prtunnel $(PREFIX)/bin/prtunnel
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install -c prtunnel.1 $(PREFIX)/man/man1/prtunnel.1
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uninstall:
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rm -f $(PREFIX)/bin/prtunnel
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rm -f $(PREFIX)/man/man1/prtunnel.1
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clean:
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rm -f prtunnel
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rm -f $(OBJS)
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connect.o: connect.c
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direct.o: direct.c
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direct6.o: direct6.c
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http.o: http.c
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socks5.o: socks5.c
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proxy.o: proxy.c
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main.o: main.c

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