-const char jcc_rcs[] = "$Id: jcc.c,v 1.36 2001/09/10 10:56:15 oes Exp $";
+const char jcc_rcs[] = "$Id: jcc.c,v 1.127 2007/03/20 13:53:17 fabiankeil Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/jcc.c,v $
*
- * Purpose : Main file. Contains main() method, main loop, and
+ * Purpose : Main file. Contains main() method, main loop, and
* the main connection-handling function.
*
- * Copyright : Written by and Copyright (C) 2001 the SourceForge
- * IJBSWA team. http://ijbswa.sourceforge.net
+ * Copyright : Written by and Copyright (C) 2001-2007 the SourceForge
+ * Privoxy team. http://www.privoxy.org/
*
* Based on the Internet Junkbuster originally written
- * by and Copyright (C) 1997 Anonymous Coders and
+ * by and Copyright (C) 1997 Anonymous Coders and
* Junkbusters Corporation. http://www.junkbusters.com
*
- * This program is free software; you can redistribute it
+ * 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 the Free Software
* Foundation; either version 2 of the License, or (at
*
* Revisions :
* $Log: jcc.c,v $
+ * Revision 1.127 2007/03/20 13:53:17 fabiankeil
+ * Log the source address for ACL-related connection drops.
+ *
+ * Revision 1.126 2007/03/17 15:20:05 fabiankeil
+ * New config option: enforce-blocks.
+ *
+ * Revision 1.125 2007/03/09 14:12:00 fabiankeil
+ * - Move null byte check into separate function.
+ * - Don't confuse the client with error pages
+ * if a CONNECT request was already confirmed.
+ *
+ * Revision 1.124 2007/02/23 14:59:54 fabiankeil
+ * Speed up NULL byte escaping and only log the complete
+ * NULL byte requests with header debugging enabled.
+ *
+ * Revision 1.123 2007/02/21 18:42:10 fabiankeil
+ * Answer requests that contain NULL bytes with
+ * a custom response instead of waiting for more
+ * data until the client eventually hangs up.
+ *
+ * Revision 1.122 2007/02/07 11:12:02 fabiankeil
+ * - Move delivery and logging of crunched responses
+ * from chat() into send_crunch_response().
+ * - Display the reason for generating http_responses.
+ * - Log the content length for LOG_LEVEL_CLF correctly
+ * (still incorrect for some fixed responses).
+ * - Reword an incorrect comment about
+ * treat-forbidden-connects-like-blocks violating
+ * the specs.
+ * - Add some log messages.
+ *
+ * Revision 1.121 2007/01/27 10:52:56 fabiankeil
+ * Move mutex initialization into separate
+ * function and exit in case of errors.
+ *
+ * Revision 1.120 2007/01/26 14:18:42 fabiankeil
+ * - Start to reduce chat()'s line count and move
+ * parts of it into separate functions.
+ * - Add "HTTP/1.1 100 Continue" hack for BR 756734.
+ *
+ * Revision 1.119 2007/01/25 14:02:30 fabiankeil
+ * - Add Proxy-Agent header to HTTP snippets that are
+ * supposed to reach HTTP clients only.
+ * - Made a few CONNECT log messages more descriptive.
+ * - Catch completely empty server responses (as seen
+ * with Tor's fake ".noconnect" top level domain).
+ * - Use shiny new "forwarding-failed" template for socks errors.
+ *
+ * Revision 1.118 2007/01/07 07:43:43 joergs
+ * AmigaOS4 support added.
+ *
+ * Revision 1.117 2006/12/31 17:56:37 fabiankeil
+ * Added config option accept-intercepted-requests
+ * and disabled it by default.
+ *
+ * Revision 1.116 2006/12/29 19:08:22 fabiankeil
+ * Reverted parts of my last commit
+ * to keep error handling working.
+ *
+ * Revision 1.115 2006/12/29 17:38:57 fabiankeil
+ * Fixed gcc43 conversion warnings.
+ *
+ * Revision 1.114 2006/12/27 18:52:02 fabiankeil
+ * Fix -pedantic ISO C warning about converting
+ * from function pointer to object pointer.
+ *
+ * Revision 1.113 2006/12/26 17:38:50 fabiankeil
+ * Silence compiler warning I introduced with my last commit.
+ *
+ * Revision 1.112 2006/12/26 17:31:41 fabiankeil
+ * Mutex protect rand() if POSIX threading
+ * is used, warn the user if that's not possible
+ * and stop using it on _WIN32 where it could
+ * cause crashes.
+ *
+ * Revision 1.111 2006/12/23 16:15:06 fabiankeil
+ * Don't prevent core dumps by catching SIGABRT.
+ * It's rude and makes debugging unreasonable painful.
+ *
+ * Revision 1.110 2006/12/13 14:52:53 etresoft
+ * Fix build failure on MacOS X. Global symbols can be either static or extern, but not both.
+ *
+ * Revision 1.109 2006/12/06 19:41:40 fabiankeil
+ * Privoxy is now able to run as intercepting
+ * proxy in combination with any packet filter
+ * that does the port redirection. The destination
+ * is extracted from the "Host:" header which
+ * should be available for nearly all requests.
+ *
+ * Moved HTTP snipplets into jcc.c.
+ * Added error message for gopher proxy requests.
+ *
+ * Revision 1.108 2006/11/28 15:38:51 fabiankeil
+ * Only unlink the pidfile if it's actually used.
+ *
+ * Change order of interception checks to make
+ * it possible to block or redirect requests for
+ * the cgi pages.
+ *
+ * Revision 1.107 2006/11/13 19:05:51 fabiankeil
+ * Make pthread mutex locking more generic. Instead of
+ * checking for OSX and OpenBSD, check for FEATURE_PTHREAD
+ * and use mutex locking unless there is an _r function
+ * available. Better safe than sorry.
+ *
+ * Fixes "./configure --disable-pthread" and should result
+ * in less threading-related problems on pthread-using platforms,
+ * but it still doesn't fix BR#1122404.
+ *
+ * Revision 1.106 2006/11/06 19:58:23 fabiankeil
+ * Move pthread.h inclusion from jcc.c to jcc.h.
+ * Fixes build on x86-freebsd1 (FreeBSD 5.4-RELEASE).
+ *
+ * Revision 1.105 2006/11/06 14:26:02 fabiankeil
+ * Don't exit after receiving the second SIGHUP on Solaris.
+ *
+ * Fixes BR 1052235, but the same problem may exist on other
+ * systems. Once 3.0.6 is out we should use sigset()
+ * where available and see if it breaks anything.
+ *
+ * Revision 1.104 2006/09/23 13:26:38 roro
+ * Replace TABs by spaces in source code.
+ *
+ * Revision 1.103 2006/09/21 12:54:43 fabiankeil
+ * Fix +redirect{}. Didn't work with -fast-redirects.
+ *
+ * Revision 1.102 2006/09/06 13:03:04 fabiankeil
+ * Respond with 400 and a short text message
+ * if the client tries to use Privoxy as FTP proxy.
+ *
+ * Revision 1.101 2006/09/06 09:23:37 fabiankeil
+ * Make number of retries in case of forwarded-connect problems
+ * a config file option (forwarded-connect-retries) and use 0 as
+ * default.
+ *
+ * Revision 1.100 2006/09/03 19:42:59 fabiankeil
+ * Set random(3) seed.
+ *
+ * Revision 1.99 2006/09/02 15:36:42 fabiankeil
+ * Follow the OpenBSD port's lead and protect the resolve
+ * functions on OpenBSD as well.
+ *
+ * Revision 1.98 2006/08/24 11:01:34 fabiankeil
+ * --user fix. Only use the user as group if no group is specified.
+ * Solves BR 1492612. Thanks to Spinor S. and David Laight.
+ *
+ * Revision 1.97 2006/08/18 15:23:17 david__schmidt
+ * Windows service (re-)integration
+ *
+ * The new args are:
+ *
+ * --install[:service_name]
+ * --uninstall[:service_name]
+ * --service
+ *
+ * They work as follows:
+ * --install will create a service for you and then terminate.
+ * By default the service name will be "privoxy" (without the quotes).
+ * However you can run multiple services if you wish, just by adding
+ * a colon and then a name (no spaces).
+ *
+ * --uninstall follows the exact same rules a --install.
+ *
+ * --service is used when the program is executed by the service
+ * control manager, and in normal circumstances would never be
+ * used as a command line argument.
+ *
+ * Revision 1.96 2006/08/15 20:12:36 david__schmidt
+ * Windows service integration
+ *
+ * Revision 1.95 2006/08/03 02:46:41 david__schmidt
+ * Incorporate Fabian Keil's patch work:
+http://www.fabiankeil.de/sourcecode/privoxy/
+ *
+ * Revision 1.94 2006/07/18 14:48:46 david__schmidt
+ * Reorganizing the repository: swapping out what was HEAD (the old 3.1 branch)
+ * with what was really the latest development (the v_3_0_branch branch)
+ *
+ * Revision 1.92.2.16 2005/04/03 20:10:50 david__schmidt
+ * Thanks to Jindrich Makovicka for a race condition fix for the log
+ * file. The race condition remains for non-pthread implementations.
+ * Reference patch #1175720.
+ *
+ * Revision 1.92.2.15 2004/10/03 12:53:32 david__schmidt
+ * Add the ability to check jpeg images for invalid
+ * lengths of comment blocks. Defensive strategy
+ * against the exploit:
+ * Microsoft Security Bulletin MS04-028
+ * Buffer Overrun in JPEG Processing (GDI+) Could
+ * Allow Code Execution (833987)
+ * Enabled with +inspect-jpegs in actions files.
+ *
+ * Revision 1.92.2.14 2003/12/12 12:52:53 oes
+ * - Fixed usage info for non-unix platforms
+ * - Fixed small cmdline parsing bug
+ *
+ * Revision 1.92.2.13 2003/11/27 19:20:27 oes
+ * Diagnostics: Now preserve the returncode of pthread_create
+ * in errno. Closes BR #775721. Thanks to Geoffrey Hausheer.
+ *
+ * Revision 1.92.2.12 2003/07/11 11:34:19 oes
+ * No longer ignore SIGCHLD. Fixes bug #769381
+ *
+ * Revision 1.92.2.11 2003/05/14 12:32:02 oes
+ * Close jarfile on graceful exit, remove stray line
+ *
+ * Revision 1.92.2.10 2003/05/08 15:13:46 oes
+ * Cosmetics: Killed a warning, a typo and an allocation left at exit
+ *
+ * Revision 1.92.2.9 2003/04/03 15:08:42 oes
+ * No longer rely on non-POSIX.1 extensions of getcwd().
+ * Fixes bug #711001
+ *
+ * Revision 1.92.2.8 2003/03/31 13:12:32 oes
+ * Replaced setenv() by posix-compliant putenv()
+ * Thanks to Neil McCalden (nmcc AT users.sf.net).
+ *
+ * Revision 1.92.2.7 2003/03/17 16:48:59 oes
+ * Added chroot ability, thanks to patch by Sviatoslav Sviridov
+ *
+ * Revision 1.92.2.6 2003/03/11 11:55:00 oes
+ * Clean-up and extension of improvements for forked mode:
+ * - Child's return code now consists of flags RC_FLAG_*
+ * - Reporting toggle to parent now properly #ifdef'ed
+ * - Children now report blocking to parent. This enables
+ * statistics in forked mode
+ *
+ * Revision 1.92.2.5 2003/03/10 23:45:32 oes
+ * Fixed bug #700381: Non-Threaded version now capable of being toggled.
+ * Children now report having been toggled through _exit(17), parents
+ * watch for that code and toggle themselves if found.
+ *
+ * Revision 1.92.2.4 2003/03/07 03:41:04 david__schmidt
+ * Wrapping all *_r functions (the non-_r versions of them) with
+ * mutex semaphores for OSX. Hopefully this will take care of all
+ * of those pesky crash reports.
+ *
+ * Revision 1.92.2.3 2003/02/28 12:53:06 oes
+ * Fixed two mostly harmless mem leaks
+ *
+ * Revision 1.92.2.2 2002/11/20 14:37:47 oes
+ * Fix: Head of global clients list now initialized to NULL
+ *
+ * Revision 1.92.2.1 2002/09/25 14:52:24 oes
+ * Added basic support for OPTIONS and TRACE HTTP methods:
+ * - New interceptor direct_response() added in chat().
+ * - sed() moved to earlier in the process, so that the
+ * Host: header is evaluated before actions and forwarding
+ * are decided on.
+ *
+ * Revision 1.92 2002/05/08 16:00:46 oes
+ * Chat's buffer handling:
+ * - Fixed bug with unchecked out-of-mem conditions
+ * while reading client request & server headers
+ * - No longer predict if the buffer limit will be exceeded
+ * in the next read -- check add_to_iob's new
+ * return code. If buffer couldn't be extended
+ * (policy or out-of-mem) while
+ * - reading from client: abort
+ * - reading server headers: send error page
+ * - buffering server body for filter: flush,
+ * and if that fails: send error page
+ *
+ * Revision 1.91 2002/04/08 20:35:58 swa
+ * fixed JB spelling
+ *
+ * Revision 1.90 2002/04/02 14:57:28 oes
+ * Made sending wafers independent of FEATURE_COOKIE_JAR
+ *
+ * Revision 1.89 2002/03/31 17:18:59 jongfoster
+ * Win32 only: Enabling STRICT to fix a VC++ compile warning.
+ *
+ * Revision 1.88 2002/03/27 14:32:43 david__schmidt
+ * More compiler warning message maintenance
+ *
+ * Revision 1.87 2002/03/26 22:29:54 swa
+ * we have a new homepage!
+ *
+ * Revision 1.86 2002/03/25 17:04:55 david__schmidt
+ * Workaround for closing the jarfile before load_config() comes around again
+ *
+ * Revision 1.85 2002/03/24 15:23:33 jongfoster
+ * Name changes
+ *
+ * Revision 1.84 2002/03/24 13:25:43 swa
+ * name change related issues
+ *
+ * Revision 1.83 2002/03/16 23:54:06 jongfoster
+ * Adding graceful termination feature, to help look for memory leaks.
+ * If you enable this (which, by design, has to be done by hand
+ * editing config.h) and then go to http://i.j.b/die, then the program
+ * will exit cleanly after the *next* request. It should free all the
+ * memory that was used.
+ *
+ * Revision 1.82 2002/03/13 00:27:05 jongfoster
+ * Killing warnings
+ *
+ * Revision 1.81 2002/03/12 01:42:50 oes
+ * Introduced modular filters
+ *
+ * Revision 1.80 2002/03/11 22:07:05 david__schmidt
+ * OS/2 port maintenance:
+ * - Fixed EMX build - it had decayed a little
+ * - Fixed inexplicable crash during FD_ZERO - must be due to a bad macro.
+ * substituted a memset for now.
+ *
+ * Revision 1.79 2002/03/09 20:03:52 jongfoster
+ * - Making various functions return int rather than size_t.
+ * (Undoing a recent change). Since size_t is unsigned on
+ * Windows, functions like read_socket that return -1 on
+ * error cannot return a size_t.
+ *
+ * THIS WAS A MAJOR BUG - it caused frequent, unpredictable
+ * crashes, and also frequently caused JB to jump to 100%
+ * CPU and stay there. (Because it thought it had just
+ * read ((unsigned)-1) == 4Gb of data...)
+ *
+ * - The signature of write_socket has changed, it now simply
+ * returns success=0/failure=nonzero.
+ *
+ * - Trying to get rid of a few warnings --with-debug on
+ * Windows, I've introduced a new type "jb_socket". This is
+ * used for the socket file descriptors. On Windows, this
+ * is SOCKET (a typedef for unsigned). Everywhere else, it's
+ * an int. The error value can't be -1 any more, so it's
+ * now JB_INVALID_SOCKET (which is -1 on UNIX, and in
+ * Windows it maps to the #define INVALID_SOCKET.)
+ *
+ * - The signature of bind_port has changed.
+ *
+ * Revision 1.78 2002/03/08 21:35:04 oes
+ * Added optional group supplement to --user option. Will now use default group of user if no group given
+ *
+ * Revision 1.77 2002/03/07 03:52:06 oes
+ * - Fixed compiler warnings etc
+ * - Improved handling of failed DNS lookups
+ *
+ * Revision 1.76 2002/03/06 22:54:35 jongfoster
+ * Automated function-comment nitpicking.
+ *
+ * Revision 1.75 2002/03/06 10:02:19 oes
+ * Fixed stupid bug when --user was not given
+ *
+ * Revision 1.74 2002/03/06 00:49:31 jongfoster
+ * Fixing warning on Windows
+ * Making #ifdefs that refer to the same variable consistently
+ * use #ifdef unix rather than mixing #ifdef unix & #ifndef OS2
+ *
+ * Revision 1.73 2002/03/05 23:57:30 hal9
+ * Stray character 's' on line 1618 was breaking build.
+ *
+ * Revision 1.72 2002/03/05 21:33:45 david__schmidt
+ * - Re-enable OS/2 building after new parms were added
+ * - Fix false out of memory report when resolving CGI templates when no IP
+ * address is available of failed attempt (a la no such domain)
+ *
+ * Revision 1.71 2002/03/05 18:13:56 oes
+ * Added --user option
+ *
+ * Revision 1.70 2002/03/05 04:52:42 oes
+ * Deleted non-errlog debugging code
+ *
+ * Revision 1.69 2002/03/04 23:50:00 jongfoster
+ * Splitting off bind_port() call into bind_port_helper(), with
+ * improved logging.
+ *
+ * Revision 1.68 2002/03/04 20:17:32 oes
+ * Fixed usage info
+ *
+ * Revision 1.67 2002/03/04 18:18:57 oes
+ * - Removed _DEBUG mode
+ * - Cleand up cmdline parsing
+ * - Introduced --no-daemon, --pidfile options
+ * - Cleaned up signal handling:
+ * - Terminate cleanly on INT, TERM and ABRT
+ * - Schedule logfile for re-opening on HUP
+ * - Ignore CHLD and PIPE
+ * - Leave the rest with their default handlers
+ * - Uniform handler registration
+ * - Added usage() function
+ * - Played styleguide police
+ *
+ * Revision 1.66 2002/03/03 15:06:55 oes
+ * Re-enabled automatic config reloading
+ *
+ * Revision 1.65 2002/03/03 14:49:11 oes
+ * Fixed CLF logging: Now uses client's original HTTP request
+ *
+ * Revision 1.64 2002/03/03 09:18:03 joergs
+ * Made jumbjuster work on AmigaOS again.
+ *
+ * Revision 1.63 2002/03/02 04:14:50 david__schmidt
+ * Clean up a little CRLF unpleasantness that suddenly appeared
+ *
+ * Revision 1.62 2002/02/20 23:17:23 jongfoster
+ * Detecting some out-of memory conditions and exiting with a log message.
+ *
+ * Revision 1.61 2002/01/17 21:01:52 jongfoster
+ * Moving all our URL and URL pattern parsing code to urlmatch.c.
+ *
+ * Revision 1.60 2001/12/30 14:07:32 steudten
+ * - Add signal handling (unix)
+ * - Add SIGHUP handler (unix)
+ * - Add creation of pidfile (unix)
+ * - Add action 'top' in rc file (RH)
+ * - Add entry 'SIGNALS' to manpage
+ * - Add exit message to logfile (unix)
+ *
+ * Revision 1.59 2001/12/13 14:07:18 oes
+ * Fixed Bug: 503 error page now sent OK
+ *
+ * Revision 1.58 2001/11/30 23:37:24 jongfoster
+ * Renaming the Win32 config file to config.txt - this is almost the
+ * same as the corresponding UNIX name "config"
+ *
+ * Revision 1.57 2001/11/16 00:47:43 jongfoster
+ * Changing the tty-disconnection code to use setsid().
+ *
+ * Revision 1.56 2001/11/13 20:20:54 jongfoster
+ * Tabs->spaces, fixing a bug with missing {} around an if()
+ *
+ * Revision 1.55 2001/11/13 20:14:53 jongfoster
+ * Patch for FreeBSD setpgrp() as suggested by Alexander Lazic
+ *
+ * Revision 1.54 2001/11/07 00:03:14 steudten
+ * Give reliable return value if an error
+ * occurs not just 0 with new daemon mode.
+ *
+ * Revision 1.53 2001/11/05 21:41:43 steudten
+ * Add changes to be a real daemon just for unix os.
+ * (change cwd to /, detach from controlling tty, set
+ * process group and session leader to the own process.
+ * Add DBG() Macro.
+ * Add some fatal-error log message for failed malloc().
+ * Add '-d' if compiled with 'configure --with-debug' to
+ * enable debug output.
+ *
+ * Revision 1.52 2001/10/26 20:11:20 jongfoster
+ * Fixing type mismatch
+ *
+ * Revision 1.51 2001/10/26 17:38:28 oes
+ * Cosmetics
+ *
+ * Revision 1.50 2001/10/25 03:40:48 david__schmidt
+ * Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
+ * threads to call select() simultaneously. So, it's time to do a real, live,
+ * native OS/2 port. See defines for __EMX__ (the porting layer) vs. __OS2__
+ * (native). Both versions will work, but using __OS2__ offers multi-threading.
+ *
+ * Revision 1.49 2001/10/23 21:41:35 jongfoster
+ * Added call to initialize the (statically-allocated of course)
+ * "out of memory" CGI response.
+ *
+ * Revision 1.48 2001/10/10 19:56:46 jongfoster
+ * Moving some code that wasn't cookie-related out of an #ifdef
+ * FEATURE_COOKIE_JAR
+ *
+ * Revision 1.47 2001/10/10 16:44:36 oes
+ * Added CONNECT destination port limitation check
+ *
+ * Revision 1.46 2001/10/08 15:17:41 oes
+ * Re-enabled SSL forwarding
+ *
+ * Revision 1.45 2001/10/07 15:42:11 oes
+ * Replaced 6 boolean members of csp with one bitmap (csp->flags)
+ *
+ * Moved downgrading of the HTTP version from parse_http_request to
+ * chat(), since we can't decide if it is necessary before we have
+ * determined the actions for the URL. The HTTP command is now
+ * *always* re-built so the repairs need no longer be special-cased.
+ *
+ * filter_popups now gets a csp pointer so it can raise the new
+ * CSP_FLAG_MODIFIED flag.
+ *
+ * Bugfix
+ *
+ * Added configurable size limit for the IOB. If the IOB grows so
+ * large that the next read would exceed the limit, the header
+ * is generated, and the header & unfiltered buffer are flushed
+ * to the client. Chat then continues in non-buffering,
+ * non-filtering body mode.
+ *
+ * Revision 1.44 2001/10/02 18:13:57 oes
+ * Ooops
+ *
+ * Revision 1.43 2001/10/02 15:32:13 oes
+ * Moved generation of hdr
+ *
+ * Revision 1.42 2001/09/21 23:02:02 david__schmidt
+ * Cleaning up 2 compiler warnings on OS/2.
+ *
+ * Revision 1.41 2001/09/16 17:05:14 jongfoster
+ * Removing unused #include showarg.h
+ *
+ * Revision 1.40 2001/09/16 15:41:45 jongfoster
+ * Fixing signed/unsigned comparison warning.
+ *
+ * Revision 1.39 2001/09/16 13:21:27 jongfoster
+ * Changes to use new list functions.
+ *
+ * Revision 1.38 2001/09/16 13:01:46 jongfoster
+ * Removing redundant function call that zeroed zalloc()'d memory.
+ *
+ * Revision 1.37 2001/09/10 11:12:24 oes
+ * Deleted unused variable
+ *
* Revision 1.36 2001/09/10 10:56:15 oes
* Silenced compiler warnings
*
#include <signal.h>
#include <fcntl.h>
#include <errno.h>
-
-#ifdef FEATURE_PTHREAD
-#include <pthread.h>
-#endif /* def FEATURE_PTHREAD */
+#include <assert.h>
#ifdef _WIN32
# ifndef FEATURE_PTHREAD
+# ifndef STRICT
+# define STRICT
+# endif
# include <windows.h>
# include <process.h>
# endif /* ndef FEATURE_PTHREAD */
# ifndef _WIN_CONSOLE
# include "w32log.h"
# endif /* ndef _WIN_CONSOLE */
+# include "w32svrapi.h"
#else /* ifndef _WIN32 */
+# if !defined (__OS2__)
# include <unistd.h>
-# include <sys/time.h>
# include <sys/wait.h>
+# endif /* ndef __OS2__ */
+# include <sys/time.h>
# include <sys/stat.h>
+# include <sys/ioctl.h>
+
+#ifdef sun
+#include <sys/termios.h>
+#endif /* sun */
+
+#ifdef unix
+#include <pwd.h>
+#include <grp.h>
+#endif
+
# include <signal.h>
# ifdef __BEOS__
# include <OS.h> /* declarations for threads and stuff. */
# endif
+# if defined(__EMX__) || defined(__OS2__)
+# include <sys/select.h> /* OS/2/EMX needs a little help with select */
+# endif
+# ifdef __OS2__
+#define INCL_DOS
+# include <os2.h>
+#define bzero(B,N) memset(B,0x00,n)
+# endif
+
# ifndef FD_ZERO
# include <select.h>
# endif
#include "jcc.h"
#include "filters.h"
#include "loaders.h"
-#include "showargs.h"
#include "parsers.h"
#include "killpopup.h"
#include "miscutil.h"
#include "actions.h"
#include "cgi.h"
#include "loadcfg.h"
+#include "urlmatch.h"
const char jcc_h_rcs[] = JCC_H_VERSION;
const char project_h_rcs[] = PROJECT_H_VERSION;
+int no_daemon = 0;
struct client_state clients[1];
struct file_list files[1];
int urls_rejected = 0; /* total nr of urls rejected */
#endif /* def FEATURE_STATISTICS */
+#ifdef FEATURE_GRACEFUL_TERMINATION
+int g_terminate = 0;
+#endif
static void listen_loop(void);
static void chat(struct client_state *csp);
#define sleep(N) Sleep(((N) * 1000))
#endif
+#ifdef __OS2__
+#define sleep(N) DosSleep(((N) * 100))
+#endif
+
+#ifdef FEATURE_PTHREAD
+pthread_mutex_t log_mutex;
+pthread_mutex_t log_init_mutex;
+
+#ifndef HAVE_GMTIME_R
+pthread_mutex_t gmtime_mutex;
+#endif /* ndef HAVE_GMTIME_R */
+
+#ifndef HAVE_LOCALTIME_R
+pthread_mutex_t localtime_mutex;
+#endif /* ndef HAVE_GMTIME_R */
+
+#ifndef HAVE_GETHOSTBYADDR_R
+pthread_mutex_t gethostbyaddr_mutex;
+#endif /* ndef HAVE_GETHOSTBYADDR_R */
+
+#ifndef HAVE_GETHOSTBYNAME_R
+pthread_mutex_t gethostbyname_mutex;
+#endif /* ndef HAVE_GETHOSTBYNAME_R */
+
+#ifndef HAVE_RANDOM
+pthread_mutex_t rand_mutex;
+#endif /* ndef HAVE_RANDOM */
+
+#endif /* FEATURE_PTHREAD */
+
+#if defined(unix) || defined(__EMX__)
+const char *basedir = NULL;
+const char *pidfile = NULL;
+int received_hup_signal = 0;
+#endif /* defined unix */
/* The vanilla wafer. */
static const char VANILLA_WAFER[] =
"Take_notice_that_I_refuse_to_be_bound_by_any_license_condition_"
"(copyright_or_otherwise)_applying_to_any_cookie._";
-
+/* HTTP snipplets. */
+const char CSUCCEED[] =
+ "HTTP/1.0 200 Connection established\n"
+ "Proxy-Agent: Privoxy/" VERSION "\r\n\r\n";
+
+const char CHEADER[] =
+ "HTTP/1.0 400 Invalid header received from browser\r\n"
+ "Connection: close\r\n\r\n"
+ "Invalid header received from browser.\r\n";
+
+const char CFORBIDDEN[] =
+ "HTTP/1.0 403 Connection not allowable\r\n"
+ "Proxy-Agent: Privoxy " VERSION "\r\n"
+ "X-Hint: If you read this message interactively, then you know why this happens ,-)\r\n"
+ "Connection: close\r\n\r\n";
+
+const char FTP_RESPONSE[] =
+ "HTTP/1.0 400 Invalid request received from browser\r\n"
+ "Connection: close\r\n\r\n"
+ "Invalid request. Privoxy doesn't support FTP.\r\n";
+
+const char GOPHER_RESPONSE[] =
+ "HTTP/1.0 400 Invalid request received from browser\r\n"
+ "Connection: close\r\n\r\n"
+ "Invalid request. Privoxy doesn't support gopher.\r\n";
+
+/* XXX: should be a template */
+const char MISSING_DESTINATION_RESPONSE[] =
+ "HTTP/1.0 400 Bad request received from browser\r\n"
+ "Proxy-Agent: Privoxy " VERSION "\r\n"
+ "Connection: close\r\n\r\n"
+ "Bad request. Privoxy was unable to extract the destination.\r\n";
+
+/* XXX: should be a template */
+const char NO_SERVER_DATA_RESPONSE[] =
+ "HTTP/1.0 502 Server or forwarder response empty\r\n"
+ "Proxy-Agent: Privoxy " VERSION "\r\n"
+ "Connection: close\r\n\r\n"
+ "Empty server or forwarder response.\r\n"
+ "The connection was closed without sending any data.\r\n";
+
+/* XXX: should be a template */
+const char NULL_BYTE_RESPONSE[] =
+ "HTTP/1.0 400 Bad request received from browser\r\n"
+ "Proxy-Agent: Privoxy " VERSION "\r\n"
+ "Connection: close\r\n\r\n"
+ "Bad request. Null byte(s) before end of request.\r\n";
+
+#if !defined(_WIN32) && !defined(__OS2__) && !defined(AMIGA)
/*********************************************************************
*
- * Function : chat
+ * Function : sig_handler
*
- * Description : Once a connection to the client has been accepted,
- * this function is called (via serve()) to handle the
- * main business of the communication. When this
- * function returns, the caller must close the client
- * socket handle.
+ * Description : Signal handler for different signals.
+ * Exit gracefully on TERM and INT
+ * or set a flag that will cause the errlog
+ * to be reopened by the main thread on HUP.
*
* Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
+ * 1 : the_signal = the signal cause this function to call
*
- * Returns : On success, the number of bytes written are returned (zero
- * indicates nothing was written). On error, -1 is returned,
- * and errno is set appropriately. If count is zero and the
- * file descriptor refers to a regular file, 0 will be
- * returned without causing any other effect. For a special
- * file, the results are not portable.
+ * Returns : -
*
*********************************************************************/
-static void chat(struct client_state *csp)
+static void sig_handler(int the_signal)
{
-/*
- * This next lines are a little ugly, but they simplifies the if statements
- * below. Basically if TOGGLE, then we want the if to test "csp->toggled_on",
- * else we don't. And if FEATURE_FORCE_LOAD, then we want the if to test
- * "csp->toggled_on", else we don't
- */
-#ifdef FEATURE_TOGGLE
-# define IS_TOGGLED_ON_AND (csp->toggled_on) &&
-#else /* ifndef FEATURE_TOGGLE */
-# define IS_TOGGLED_ON_AND
-#endif /* ndef FEATURE_TOGGLE */
-#ifdef FEATURE_FORCE_LOAD
-# define IS_NOT_FORCED_AND (!csp->force) &&
-#else /* ifndef FEATURE_FORCE_LOAD */
-# define IS_NOT_FORCED_AND
-#endif /* def FEATURE_FORCE_LOAD */
-
-#define IS_ENABLED_AND IS_TOGGLED_ON_AND IS_NOT_FORCED_AND
-
- char buf[BUFFER_SIZE];
- char *hdr, *p, *req;
- fd_set rfds;
- int n, maxfd, server_body;
- int ms_iis5_hack = 0;
- int byte_count = 0;
- const struct forward_spec * fwd;
- struct http_request *http;
-#ifdef FEATURE_KILL_POPUPS
- int block_popups; /* bool, 1==will block popups */
- int block_popups_now = 0; /* bool, 1==currently blocking popups */
-#endif /* def FEATURE_KILL_POPUPS */
-
- int pcrs_filter; /* bool, 1==will filter through pcrs */
- int gif_deanimate; /* bool, 1==will deanimate gifs */
+ switch(the_signal)
+ {
+ case SIGTERM:
+ case SIGINT:
+ log_error(LOG_LEVEL_INFO, "exiting by signal %d .. bye", the_signal);
+#if defined(unix)
+ if(pidfile)
+ {
+ unlink(pidfile);
+ }
+#endif /* unix */
+ exit(the_signal);
+ break;
+
+ case SIGHUP:
+ received_hup_signal = 1;
+ break;
+
+ default:
+ /*
+ * We shouldn't be here, unless we catch signals
+ * in main() that we can't handle here!
+ */
+ log_error(LOG_LEVEL_FATAL, "sig_handler: exiting on unexpected signal %d", the_signal);
+ }
+ return;
- /* Function that does the content filtering for the current request */
- char *(*content_filter)() = NULL;
+}
+#endif
- /* Skeleton for HTTP response, if we should intercept the request */
- struct http_response *rsp;
- http = csp->http;
+/*********************************************************************
+ *
+ * Function : client_protocol_is_unsupported
+ *
+ * Description : Checks if the client used a known unsupported
+ * protocol and deals with it by sending an error
+ * response.
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ * 2 : req = the first request line send by the client
+ *
+ * Returns : TRUE if an error response has been generated, or
+ * FALSE if the request doesn't look invalid.
+ *
+ *********************************************************************/
+int client_protocol_is_unsupported(const struct client_state *csp, char *req)
+{
+ char buf[BUFFER_SIZE];
/*
- * Read the client's request. Note that since we're not using select() we
- * could get blocked here if a client connected, then didn't say anything!
+ * If it's a FTP or gopher request, we don't support it.
+ *
+ * These checks are better than nothing, but they might
+ * not work in all configurations and some clients might
+ * have problems digesting the answer.
+ *
+ * They should, however, never cause more problems than
+ * Privoxy's old behaviour (returning the misleading HTML
+ * error message:
+ *
+ * "Could not resolve http://(ftp|gopher)://example.org").
*/
-
- while (FOREVER)
+ if (!strncmpic(req, "GET ftp://", 10) || !strncmpic(req, "GET gopher://", 13))
{
- n = read_socket(csp->cfd, buf, sizeof(buf));
-
- if (n <= 0) break; /* error! */
-
- add_to_iob(csp, buf, n);
-
- req = get_header(csp);
-
- if (req == NULL)
- {
- break; /* no HTTP request! */
- }
-
- if (*req == '\0')
+ if (!strncmpic(req, "GET ftp://", 10))
{
- continue; /* more to come! */
+ strcpy(buf, FTP_RESPONSE);
+ log_error(LOG_LEVEL_ERROR, "%s tried to use Privoxy as FTP proxy: %s",
+ csp->ip_addr_str, req);
}
-
-#ifdef FEATURE_FORCE_LOAD
- /* If this request contains the FORCE_PREFIX,
- * better get rid of it now and set the force flag --oes
- */
-
- if (strstr(req, FORCE_PREFIX))
- {
- strclean(req, FORCE_PREFIX);
- log_error(LOG_LEVEL_FORCE, "Enforcing request \"%s\".\n", req);
- csp->force = 1;
- }
else
{
- csp->force = 0;
+ strcpy(buf, GOPHER_RESPONSE);
+ log_error(LOG_LEVEL_ERROR, "%s tried to use Privoxy as gopher proxy: %s",
+ csp->ip_addr_str, req);
}
-#endif /* def FEATURE_FORCE_LOAD */
-
- parse_http_request(req, http, csp);
+ log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 400 0", csp->ip_addr_str, req);
freez(req);
- break;
- }
-
- if (http->cmd == NULL)
- {
- strcpy(buf, CHEADER);
write_socket(csp->cfd, buf, strlen(buf));
- log_error(LOG_LEVEL_CLF, "%s - - [%T] \" \" 400 0", csp->ip_addr_str);
-
- return;
+ return TRUE;
}
- /* decide how to route the HTTP request */
+ return FALSE;
+}
- if ((fwd = forward_url(http, csp)) == NULL)
- {
- log_error(LOG_LEVEL_FATAL, "gateway spec is NULL!?!? This can't happen!");
- /* Never get here - LOG_LEVEL_FATAL causes program exit */
- }
- /* build the http request to send to the server
- * we have to do one of the following:
- *
- * create = use the original HTTP request to create a new
- * HTTP request that has only the path component
- * without the http://domainspec
- * pass = pass the original HTTP request unchanged
- *
- * drop = drop the HTTP request
- *
- * here's the matrix:
- * SSL
- * 0 1
- * +--------+--------+
- * | | |
- * 0 | create | drop |
- * | | |
- * Forwarding +--------+--------+
- * | | |
- * 1 | pass | pass |
- * | | |
- * +--------+--------+
- *
- */
+/*********************************************************************
+ *
+ * Function : get_request_destination_elsewhere
+ *
+ * Description : If the client's request was redirected into
+ * Privoxy without the client's knowledge,
+ * the request line lacks the destination host.
+ *
+ * This function tries to get it elsewhere,
+ * provided accept-intercepted-requests is enabled.
+ *
+ * "Elsewhere" currently only means "Host: header",
+ * but in the future we may ask the redirecting
+ * packet filter to look the destination up.
+ *
+ * If the destination stays unknown, an error
+ * response is send to the client and headers
+ * are freed so that chat() can return directly.
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ * 2 : headers = a header list
+ *
+ * Returns : JB_ERR_OK if the destination is now known, or
+ * JB_ERR_PARSE if it isn't.
+ *
+ *********************************************************************/
+jb_err get_request_destination_elsewhere(struct client_state *csp, struct list *headers)
+{
+ char buf[BUFFER_SIZE];
+ char *req;
- if (fwd->forward_host)
- {
- /* if forwarding, just pass the request as is */
- enlist(csp->headers, http->cmd);
- }
- else
+ if (!(csp->config->feature_flags & RUNTIME_FEATURE_ACCEPT_INTERCEPTED_REQUESTS))
{
- if (http->ssl == 0)
- {
- /* otherwise elide the host information from the url */
- p = NULL;
- p = strsav(p, http->gpc);
- p = strsav(p, " ");
- p = strsav(p, http->path);
- p = strsav(p, " ");
- p = strsav(p, http->ver);
- enlist(csp->headers, p);
- freez(p);
- }
- }
+ log_error(LOG_LEVEL_ERROR, "%s's request: \'%s\' is invalid."
+ " Privoxy isn't configured to accept intercepted requests.",
+ csp->ip_addr_str, csp->http->cmd);
+ /* XXX: Use correct size */
+ log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 400 0",
+ csp->ip_addr_str, csp->http->cmd);
- /* decide what we're to do with cookies */
+ strcpy(buf, CHEADER);
+ write_socket(csp->cfd, buf, strlen(buf));
+ destroy_list(headers);
-#ifdef FEATURE_TOGGLE
- if (!csp->toggled_on)
+ return JB_ERR_PARSE;
+ }
+ else if (JB_ERR_OK == get_destination_from_headers(headers, csp->http))
{
- /* Most compatible set of actions (i.e. none) */
- init_current_action(csp->action);
+ /* Split the domain we just got for pattern matching */
+ init_domain_components(csp->http);
+
+ return JB_ERR_OK;
}
else
-#endif /* ndef FEATURE_TOGGLE */
{
- url_actions(http, csp);
- }
+ /* We can't work without destination. Go spread the news.*/
+
+ req = list_to_text(headers);
+ chomp(req);
+ /* XXX: Use correct size */
+ log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 400 0",
+ csp->ip_addr_str, csp->http->cmd);
+ log_error(LOG_LEVEL_ERROR,
+ "Privoxy was unable to get the destination for %s's request:\n%s\n%s",
+ csp->ip_addr_str, csp->http->cmd, req);
+ freez(req);
-#ifdef FEATURE_COOKIE_JAR
+ strcpy(buf, MISSING_DESTINATION_RESPONSE);
+ write_socket(csp->cfd, buf, strlen(buf));
+ destroy_list(headers);
+
+ return JB_ERR_PARSE;
+ }
/*
- * If we're logging cookies in a cookie jar, and the user has not
- * supplied any wafers, and the user has not told us to suppress the
- * vanilla wafer, then send the vanilla wafer.
+ * TODO: If available, use PF's ioctl DIOCNATLOOK as last resort
+ * to get the destination IP address, use it as host directly
+ * or do a reverse DNS lookup first.
*/
- if ((csp->config->jarfile != NULL)
- && (csp->action->multi[ACTION_MULTI_WAFER]->next == NULL)
- && ((csp->action->flags & ACTION_VANILLA_WAFER) != 0))
- {
- enlist(csp->action->multi[ACTION_MULTI_WAFER], VANILLA_WAFER);
- }
-#endif /* def FEATURE_COOKIE_JAR */
-
-#ifdef FEATURE_KILL_POPUPS
- block_popups = ((csp->action->flags & ACTION_NO_POPUPS) != 0);
-#endif /* def FEATURE_KILL_POPUPS */
-
- pcrs_filter = (csp->rlist != NULL) && /* There are expressions to be used */
- ((csp->action->flags & ACTION_FILTER) != 0);
+}
- gif_deanimate = ((csp->action->flags & ACTION_DEANIMATE) != 0);
- /* grab the rest of the client's headers */
+/*********************************************************************
+ *
+ * Function : get_server_headers
+ *
+ * Description : Parses server headers in iob and fills them
+ * into csp->headers so that they can later be
+ * handled by sed().
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ *
+ * Returns : JB_ERR_OK if everything went fine, or
+ * JB_ERR_PARSE if the headers were incomplete.
+ *
+ *********************************************************************/
+jb_err get_server_headers(struct client_state *csp)
+{
+ int continue_hack_in_da_house = 0;
+ char * header;
- while (FOREVER)
+ while (((header = get_header(csp)) != NULL) || continue_hack_in_da_house)
{
- if ( ( p = get_header(csp) ) && ( *p == '\0' ) )
+ if (header == NULL)
{
- n = read_socket(csp->cfd, buf, sizeof(buf));
- if (n <= 0)
- {
- log_error(LOG_LEVEL_ERROR, "read from client failed: %E");
- return;
- }
- add_to_iob(csp, buf, n);
+ /*
+ * continue hack in da house. Ignore the ending of
+ * this head and continue enlisting header lines.
+ * The reason is described below.
+ */
+ enlist(csp->headers, "");
+ continue_hack_in_da_house = 0;
continue;
}
-
- if (p == NULL) break;
-
- enlist(csp->headers, p);
- freez(p);
- }
-
- /* We have a request. */
-
- hdr = sed(client_patterns, add_client_headers, csp);
- destroy_list(csp->headers);
-
- /*
- * Now, check to see if we need to intercept it, i.e.
- * If
- */
-
- if (
- /* a CGI call was detected and answered */
- (NULL != (rsp = dispatch_cgi(csp)))
-
- /* or we are enabled and... */
- || (IS_ENABLED_AND (
-
- /* ..the request was blocked */
- ( NULL != (rsp = block_url(csp)))
-
- /* ..or untrusted */
-#ifdef FEATURE_TRUST
- || ( NULL != (rsp = trust_url(csp)))
-#endif /* def FEATURE_TRUST */
-
- /* ..or a fast redirect kicked in */
-#ifdef FEATURE_FAST_REDIRECTS
- || (((csp->action->flags & ACTION_FAST_REDIRECTS) != 0) &&
- (NULL != (rsp = redirect_url(csp))))
-#endif /* def FEATURE_FAST_REDIRECTS */
- ))
- )
- {
- /* Write the answer to the client */
- if ((write_socket(csp->cfd, rsp->head, rsp->head_length) != rsp->head_length)
- || (write_socket(csp->cfd, rsp->body, rsp->content_length) != rsp->content_length))
- {
- log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
+ else if (0 == strncmpic(header, "HTTP/1.1 100", 12))
+ {
+ /*
+ * It's a bodyless continue response, don't
+ * stop header parsing after reaching it's end.
+ *
+ * As a result Privoxy will concatenate the
+ * next response's head and parse and deliver
+ * the headers as if they belonged to one request.
+ *
+ * The client will separate them because of the
+ * empty line between them.
+ *
+ * XXX: What we're doing here is clearly against
+ * the intended purpose of the continue header,
+ * and under some conditions (HTTP/1.0 client request)
+ * it's a standard violation.
+ *
+ * Anyway, "sort of against the spec" is preferable
+ * to "always getting confused by Continue responses"
+ * (Privoxy's behaviour before this hack was added)
+ */
+ log_error(LOG_LEVEL_HEADER, "Continue hack in da house.");
+ continue_hack_in_da_house = 1;
+ }
+ else if (*header == '\0')
+ {
+ /*
+ * If the header is empty, but the Continue hack
+ * isn't active, we can assume that we reached the
+ * end of the buffer before we hit the end of the
+ * head.
+ *
+ * Inform the caller an let it decide how to handle it.
+ */
+ return JB_ERR_PARSE;
}
-#ifdef FEATURE_STATISTICS
- /* Count as a rejected request */
- csp->rejected = 1;
-#endif /* def FEATURE_STATISTICS */
+ /* Enlist header */
+ if (JB_ERR_MEMORY == enlist(csp->headers, header))
+ {
+ /*
+ * XXX: Should we quit the request and return a
+ * out of memory error page instead?
+ */
+ log_error(LOG_LEVEL_ERROR,
+ "Out of memory while enlisting server headers. %s lost.",
+ header);
+ }
+ freez(header);
+ }
- /* Log (FIXME: All intercept reasons apprear as "crunch" with Status 200) */
- log_error(LOG_LEVEL_GPC, "%s%s crunch!", http->hostport, http->path);
- log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 3", csp->ip_addr_str, http->cmd);
+ return JB_ERR_OK;
+}
- /* Clean up and return */
- free_http_response(rsp);
- freez(hdr);
- return;
- }
- log_error(LOG_LEVEL_GPC, "%s%s", http->hostport, http->path);
+/*********************************************************************
+ *
+ * Function : crunch_reason
+ *
+ * Description : Translates the crunch reason code into a string.
+ *
+ * Parameters :
+ * 1 : rsp = a http_response
+ *
+ * Returns : A string with the crunch reason or an error description.
+ *
+ *********************************************************************/
+const char *crunch_reason(const struct http_response *rsp)
+{
+ char * reason = NULL;
- if (fwd->forward_host)
+ assert(rsp != NULL);
+ if (rsp == NULL)
{
- log_error(LOG_LEVEL_CONNECT, "via %s:%d to: %s",
- fwd->forward_host, fwd->forward_port, http->hostport);
+ return "Internal error while searching for crunch reason";
}
- else
+
+ switch (rsp->reason)
{
- log_error(LOG_LEVEL_CONNECT, "to %s", http->hostport);
+ case RSP_REASON_UNSUPPORTED:
+ reason = "Unsupported HTTP feature";
+ break;
+ case RSP_REASON_BLOCKED:
+ reason = "Blocked";
+ break;
+ case RSP_REASON_UNTRUSTED:
+ reason = "Untrusted";
+ break;
+ case RSP_REASON_REDIRECTED:
+ reason = "Redirected";
+ break;
+ case RSP_REASON_CGI_CALL:
+ reason = "CGI Call";
+ break;
+ case RSP_REASON_NO_SUCH_DOMAIN:
+ reason = "DNS failure";
+ break;
+ case RSP_REASON_FORWARDING_FAILED:
+ reason = "Forwarding failed";
+ break;
+ case RSP_REASON_CONNECT_FAILED:
+ reason = "Connection failure";
+ break;
+ case RSP_REASON_OUT_OF_MEMORY:
+ reason = "Out of memory (may mask other reasons)";
+ break;
+ default:
+ reason = "No reason recorded";
+ break;
}
- /* here we connect to the server, gateway, or the forwarder */
+ return reason;
+}
- csp->sfd = forwarded_connect(fwd, http, csp);
- if (csp->sfd < 0)
- {
- log_error(LOG_LEVEL_CONNECT, "connect to: %s failed: %E",
- http->hostport);
+/*********************************************************************
+ *
+ * Function : send_crunch_response
+ *
+ * Description : Delivers already prepared response for
+ * intercepted requests, logs the interception
+ * and frees the response.
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ * 1 : rsp = Fully prepared response. Will be freed on exit.
+ *
+ * Returns : Nothing.
+ *
+ *********************************************************************/
+void send_crunch_response(struct client_state *csp, struct http_response *rsp)
+{
+ const struct http_request *http = csp->http;
+ char status_code[4];
- if (errno == EINVAL)
- {
- rsp = error_response(csp, "no-such-domain", errno);
+ assert(rsp != NULL);
+ assert(rsp->head != NULL);
- log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 404 0",
- csp->ip_addr_str, http->cmd);
- }
- else
+ if (rsp == NULL)
{
- rsp = error_response(csp, "connect-failed", errno);
-
- log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0",
- csp->ip_addr_str, http->cmd);
+ /*
+ * Not supposed to happen. If it does
+ * anyway, treat it as an unknown error.
+ */
+ cgi_error_unknown(csp, rsp, RSP_REASON_INTERNAL_ERROR);
+ /* return code doesn't matter */
}
- /* Write the answer to the client */
- if(rsp)
- {
- if ((write_socket(csp->cfd, rsp->head, rsp->head_length) != rsp->head_length)
- || (write_socket(csp->cfd, rsp->body, rsp->content_length) != rsp->content_length))
- {
- log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
- }
+ if (rsp == NULL)
+ {
+ /* If rsp is still NULL, we have serious internal problems. */
+ log_error(LOG_LEVEL_FATAL,
+ "NULL response in send_crunch_response and cgi_error_unknown failed as well.");
}
- free_http_response(rsp);
- freez(hdr);
- return;
- }
-
- log_error(LOG_LEVEL_CONNECT, "OK");
-
- if (fwd->forward_host || (http->ssl == 0))
- {
- /* write the client's (modified) header to the server
- * (along with anything else that may be in the buffer)
+ /*
+ * Extract the status code from the actual head
+ * that was send to the client. It is the only
+ * way to get it right for all requests, including
+ * the fixed ones for out-of-memory problems.
+ *
+ * A head starts like this: 'HTTP/1.1 200...'
+ * 0123456789|11
+ * 10
*/
+ status_code[0] = rsp->head[9];
+ status_code[1] = rsp->head[10];
+ status_code[2] = rsp->head[11];
+ status_code[3] = '\0';
+
+ /* Write the answer to the client */
+ if (write_socket(csp->cfd, rsp->head, rsp->head_length)
+ || write_socket(csp->cfd, rsp->body, rsp->content_length))
+ {
+ /* There is nothing we can do about it. */
+ log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", csp->http->host);
+ }
- n = strlen(hdr);
+ /* Log that the request was crunched and why. */
+ log_error(LOG_LEVEL_GPC, "%s%s crunch! (%s)",
+ http->hostport, http->path, crunch_reason(rsp));
+ log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" %s %d",
+ csp->ip_addr_str, http->ocmd, status_code, rsp->content_length);
- if ((write_socket(csp->sfd, hdr, n) != n)
- || (flush_socket(csp->sfd, csp ) < 0))
+ /* Clean up and return */
+ if (cgi_error_memory() != rsp)
{
- log_error(LOG_LEVEL_CONNECT, "write header to: %s failed: %E",
- http->hostport);
+ free_http_response(rsp);
+ }
+ return;
+}
- log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0",
- csp->ip_addr_str, http->cmd);
- rsp = error_response(csp, "connect-failed", errno);
+/*********************************************************************
+ *
+ * Function : request_contains_null_bytes
+ *
+ * Description : Checks for NULL bytes in the request and sends
+ * an error message to the client if any were found.
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ * 2 : buf = Data from the client's request to check.
+ * 3 : len = The data length.
+ *
+ * Returns : TRUE if the request contained one or more NULL bytes, or
+ * FALSE otherwise.
+ *
+ *********************************************************************/
+int request_contains_null_bytes(const struct client_state *csp, char *buf, int len)
+{
+ size_t c_len; /* Request lenght when treated as C string */
- if(rsp)
- {
- if ((write_socket(csp->cfd, rsp->head, n) != n)
- || (write_socket(csp->cfd, rsp->body, rsp->content_length) != rsp->content_length))
- {
- log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
- }
- }
+ c_len = strlen(buf);
- free_http_response(rsp);
- freez(hdr);
- return;
- }
- }
- else
+ if (c_len < len)
{
/*
- * We're running an SSL tunnel and we're not forwarding,
- * so just send the "connect succeeded" message to the
- * client, flush the rest, and get out of the way.
+ * Null byte(s) found. Log the request,
+ * return an error response and hang up.
*/
- log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 2\n",
- csp->ip_addr_str, http->cmd);
+ size_t tmp_len = c_len;
- if (write_socket(csp->cfd, CSUCCEED, sizeof(CSUCCEED)-1) < 0)
+ do
{
- freez(hdr);
- return;
- }
- IOB_RESET(csp);
+ /*
+ * Replace NULL byte(s) with '°' characters
+ * so the request can be logged as string.
+ * XXX: Is there a better replacement character?
+ */
+ buf[tmp_len]='°';
+ tmp_len += strlen(buf+tmp_len);
+ } while (tmp_len < len);
+
+ log_error(LOG_LEVEL_ERROR, "%s\'s request contains at least one NULL byte "
+ "(length=%d, strlen=%d).", csp->ip_addr_str, len, c_len);
+ log_error(LOG_LEVEL_HEADER,
+ "Offending request data with NULL bytes turned into \'°\' characters: %s", buf);
+
+ strcpy(buf, NULL_BYTE_RESPONSE);
+ write_socket(csp->cfd, buf, strlen(buf));
+
+ /* XXX: Log correct size */
+ log_error(LOG_LEVEL_CLF, "%s - - [%T] \"Invalid request\" 400 0", csp->ip_addr_str);
+
+ return TRUE;
}
- /* we're finished with the client's header */
- freez(hdr);
+ return FALSE;
+}
- maxfd = ( csp->cfd > csp->sfd ) ? csp->cfd : csp->sfd;
- /* pass data between the client and server
- * until one or the other shuts down the connection.
- */
+/*********************************************************************
+ *
+ * Function : chat
+ *
+ * Description : Once a connection to the client has been accepted,
+ * this function is called (via serve()) to handle the
+ * main business of the communication. When this
+ * function returns, the caller must close the client
+ * socket handle.
+ *
+ * FIXME: chat is nearly thousand lines long.
+ * Ridiculous.
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ *
+ * Returns : On success, the number of bytes written are returned (zero
+ * indicates nothing was written). On error, -1 is returned,
+ * and errno is set appropriately. If count is zero and the
+ * file descriptor refers to a regular file, 0 will be
+ * returned without causing any other effect. For a special
+ * file, the results are not portable.
+ *
+ *********************************************************************/
+static void chat(struct client_state *csp)
+{
+/*
+ * This next lines are a little ugly, but they simplifies the if statements
+ * below. Basically if TOGGLE, then we want the if to test if the
+ * CSP_FLAG_TOGGLED_ON flag ist set, else we don't. And if FEATURE_FORCE_LOAD,
+ * then we want the if to test for CSP_FLAG_FORCED , else we don't
+ */
+#ifdef FEATURE_TOGGLE
+# define IS_TOGGLED_ON_AND (csp->flags & CSP_FLAG_TOGGLED_ON) &&
+#else /* ifndef FEATURE_TOGGLE */
+# define IS_TOGGLED_ON_AND
+#endif /* ndef FEATURE_TOGGLE */
+#ifdef FEATURE_FORCE_LOAD
+# define IS_NOT_FORCED_AND !(csp->flags & CSP_FLAG_FORCED) &&
+#else /* ifndef FEATURE_FORCE_LOAD */
+# define IS_NOT_FORCED_AND
+#endif /* def FEATURE_FORCE_LOAD */
- server_body = 0;
+#define IS_ENABLED_AND IS_TOGGLED_ON_AND IS_NOT_FORCED_AND
- while (FOREVER)
- {
- FD_ZERO(&rfds);
+ char buf[BUFFER_SIZE];
+ char *hdr;
+ char *p;
+ char *req;
+ fd_set rfds;
+ int n;
+ jb_socket maxfd;
+ int server_body;
+ int ms_iis5_hack = 0;
+ size_t byte_count = 0;
+ int forwarded_connect_retries = 0;
+ int max_forwarded_connect_retries = csp->config->forwarded_connect_retries;
+ const struct forward_spec * fwd;
+ struct http_request *http;
+ int len; /* for buffer sizes (and negative error codes) */
+#ifdef FEATURE_KILL_POPUPS
+ int block_popups; /* bool, 1==will block popups */
+ int block_popups_now = 0; /* bool, 1==currently blocking popups */
+#endif /* def FEATURE_KILL_POPUPS */
- FD_SET(csp->cfd, &rfds);
- FD_SET(csp->sfd, &rfds);
+ int pcrs_filter; /* bool, 1==will filter through pcrs */
+ int gif_deanimate; /* bool, 1==will deanimate gifs */
+ int jpeg_inspect; /* bool, 1==will inspect jpegs */
- n = select(maxfd+1, &rfds, NULL, NULL, NULL);
+ /* Function that does the content filtering for the current request */
+ char *(*content_filter)() = NULL;
- if (n < 0)
+ /* Skeleton for HTTP response, if we should intercept the request */
+ struct http_response *rsp;
+
+ /* Temporary copy of the client's headers before they get enlisted in csp->headers */
+ struct list header_list;
+ struct list *headers = &header_list;
+
+ http = csp->http;
+
+ memset(buf, 0, sizeof(buf));
+
+ /*
+ * Read the client's request. Note that since we're not using select() we
+ * could get blocked here if a client connected, then didn't say anything!
+ */
+
+ for (;;)
+ {
+ len = read_socket(csp->cfd, buf, sizeof(buf)-1);
+
+ if (len <= 0) break; /* error! */
+
+ if (request_contains_null_bytes(csp, buf, len))
{
- log_error(LOG_LEVEL_ERROR, "select() failed!: %E");
+ /* NULL bytes found and dealt with, just hang up. */
return;
}
- /* this is the body of the browser's request
- * just read it and write it.
+ /*
+ * If there is no memory left for buffering the
+ * request, there is nothing we can do but hang up
*/
+ if (add_to_iob(csp, buf, len))
+ {
+ return;
+ }
- if (FD_ISSET(csp->cfd, &rfds))
+ req = get_header(csp);
+
+ if (req == NULL)
{
- n = read_socket(csp->cfd, buf, sizeof(buf));
+ break; /* no HTTP request! */
+ }
- if (n <= 0)
- {
- break; /* "game over, man" */
- }
+ if (*req == '\0')
+ {
+ continue; /* more to come! */
+ }
- if (write_socket(csp->sfd, buf, n) != n)
- {
- log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
- return;
- }
- continue;
+ /* Does the request line look invalid? */
+ if (client_protocol_is_unsupported(csp, req))
+ {
+ /*
+ * Yes. The request has already been
+ * answered with a error response, the buffers
+ * were freed and we're done with chatting.
+ */
+ return;
}
+#ifdef FEATURE_FORCE_LOAD
/*
- * The server wants to talk. It could be the header or the body.
- * If `hdr' is null, then it's the header otherwise it's the body.
- * FIXME: Does `hdr' really mean `host'? No.
+ * If this request contains the FORCE_PREFIX and blocks
+ * aren't enforced, get rid of it and set the force flag.
*/
-
-
- if (FD_ISSET(csp->sfd, &rfds))
+ if (strstr(req, FORCE_PREFIX))
{
- fflush( 0 );
- n = read_socket(csp->sfd, buf, sizeof(buf) - 1);
-
- if (n < 0)
+ if (csp->config->feature_flags & RUNTIME_FEATURE_ENFORCE_BLOCKS)
{
- log_error(LOG_LEVEL_ERROR, "read from: %s failed: %E", http->host);
+ log_error(LOG_LEVEL_FORCE,
+ "Ignored force prefix in request: \"%s\".", req);
+ }
+ else
+ {
+ strclean(req, FORCE_PREFIX);
+ log_error(LOG_LEVEL_FORCE, "Enforcing request: \"%s\".", req);
+ csp->flags |= CSP_FLAG_FORCED;
+ }
+ }
- log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0",
- csp->ip_addr_str, http->cmd);
+#endif /* def FEATURE_FORCE_LOAD */
- rsp = error_response(csp, "connect-failed", errno);
+ switch( parse_http_request(req, http, csp) )
+ {
+ case JB_ERR_MEMORY:
+ log_error(LOG_LEVEL_ERROR, "Out of memory while parsing request.");
+ break;
+ case JB_ERR_PARSE:
+ log_error(LOG_LEVEL_ERROR, "Couldn't parse request: %s.", req);
+ break;
+ }
- if(rsp)
- {
- if ((write_socket(csp->cfd, rsp->head, rsp->head_length) != rsp->head_length)
- || (write_socket(csp->cfd, rsp->body, rsp->content_length) != rsp->content_length))
- {
- log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
- }
- }
-
- free_http_response(rsp);
- return;
- }
+ freez(req);
+ break;
+ }
- /* Add a trailing zero. This lets filter_popups
- * use string operations.
- */
- buf[n] = '\0';
+ if (http->cmd == NULL)
+ {
+ strcpy(buf, CHEADER);
+ write_socket(csp->cfd, buf, strlen(buf));
+ /* XXX: Use correct size */
+ log_error(LOG_LEVEL_CLF, "%s - - [%T] \"Invalid request\" 400 0", csp->ip_addr_str);
+ log_error(LOG_LEVEL_ERROR, "Invalid header received from %s.", csp->ip_addr_str);
-#ifdef FEATURE_KILL_POPUPS
- /* Filter the popups on this read. */
- if (block_popups_now)
+ free_http_request(http);
+ return;
+ }
+
+ /* grab the rest of the client's headers */
+ init_list(headers);
+ for (;;)
+ {
+ if ( ( ( p = get_header(csp) ) != NULL) && ( *p == '\0' ) )
+ {
+ len = read_socket(csp->cfd, buf, sizeof(buf));
+ if (len <= 0)
{
- filter_popups(buf);
+ log_error(LOG_LEVEL_ERROR, "read from client failed: %E");
+ return;
}
-#endif /* def FEATURE_KILL_POPUPS */
-
- /* Normally, this would indicate that we've read
- * as much as the server has sent us and we can
- * close the client connection. However, Microsoft
- * in its wisdom has released IIS/5 with a bug that
- * prevents it from sending the trailing \r\n in
- * a 302 redirect header (and possibly other headers).
- * To work around this if we've haven't parsed
- * a full header we'll append a trailing \r\n
- * and see if this now generates a valid one.
- *
- * This hack shouldn't have any impacts. If we've
- * already transmitted the header or if this is a
- * SSL connection, then we won't bother with this
- * hack. So we only work on partially received
- * headers. If we append a \r\n and this still
- * doesn't generate a valid header, then we won't
- * transmit anything to the client.
+
+ /*
+ * If there is no memory left for buffering the
+ * request, there is nothing we can do but hang up
*/
- if (n == 0)
+ if (add_to_iob(csp, buf, len))
{
-
- if (server_body || http->ssl)
- {
- /*
- * If we have been buffering up the document,
- * now is the time to apply content modification
- * and send the result to the client.
- */
- if (content_filter)
- {
- /*
- * If the content filter fails, use the original
- * buffer and length.
- * (see p != NULL ? p : csp->iob->cur below)
- */
- if (NULL == (p = (*content_filter)(csp)))
- {
- csp->content_length = csp->iob->eod - csp->iob->cur;
- }
+ return;
+ }
+ continue;
+ }
- hdr = sed(server_patterns, add_server_headers, csp);
- n = strlen(hdr);
+ if (p == NULL) break;
- if ((write_socket(csp->cfd, hdr, n) != n)
- || (write_socket(csp->cfd, p != NULL ? p : csp->iob->cur, csp->content_length) != csp->content_length))
- {
- log_error(LOG_LEVEL_CONNECT, "write modified content to client failed: %E");
- return;
- }
+ enlist(headers, p);
+ freez(p);
- freez(hdr);
- freez(p);
- }
+ }
- break; /* "game over, man" */
- }
+ if (http->host == NULL)
+ {
+ /*
+ * If we still don't know the request destination,
+ * the request is invalid or the client uses
+ * Privoxy without it's knowledge.
+ */
+ if (JB_ERR_OK != get_request_destination_elsewhere(csp, headers))
+ {
+ /*
+ * Our attempts to get the request destination
+ * elsewhere failed or Privoxy is configured
+ * to only accept proxy requests.
+ *
+ * An error response has already been send
+ * and we're done here.
+ */
+ return;
+ }
+ }
- /*
- * This is NOT the body, so
- * Let's pretend the server just sent us a blank line.
- */
- n = sprintf(buf, "\r\n");
+ /* decide how to route the HTTP request */
- /*
- * Now, let the normal header parsing algorithm below do its
- * job. If it fails, we'll exit instead of continuing.
- */
+ if ((fwd = forward_url(http, csp)) == NULL)
+ {
+ log_error(LOG_LEVEL_FATAL, "gateway spec is NULL!?!? This can't happen!");
+ /* Never get here - LOG_LEVEL_FATAL causes program exit */
+ }
- ms_iis5_hack = 1;
- }
+ /* build the http request to send to the server
+ * we have to do one of the following:
+ *
+ * create = use the original HTTP request to create a new
+ * HTTP request that has either the path component
+ * without the http://domainspec (w/path) or the
+ * full orininal URL (w/url)
+ * Note that the path and/or the HTTP version may
+ * have been altered by now.
+ *
+ * connect = Open a socket to the host:port of the server
+ * and short-circuit server and client socket.
+ *
+ * pass = Pass the request unchanged if forwarding a CONNECT
+ * request to a parent proxy. Note that we'll be sending
+ * the CFAIL message ourselves if connecting to the parent
+ * fails, but we won't send a CSUCCEED message if it works,
+ * since that would result in a double message (ours and the
+ * parent's). After sending the request to the parent, we simply
+ * tunnel.
+ *
+ * here's the matrix:
+ * SSL
+ * 0 1
+ * +--------+--------+
+ * | | |
+ * 0 | create | connect|
+ * | w/path | |
+ * Forwarding +--------+--------+
+ * | | |
+ * 1 | create | pass |
+ * | w/url | |
+ * +--------+--------+
+ *
+ */
- /*
- * If this is an SSL connection or we're in the body
- * of the server document, just write it to the client,
- * unless we need to buffer the body for later content-filtering
- */
+ /*
+ * Determine the actions for this URL
+ */
+#ifdef FEATURE_TOGGLE
+ if (!(csp->flags & CSP_FLAG_TOGGLED_ON))
+ {
+ /* Most compatible set of actions (i.e. none) */
+ init_current_action(csp->action);
+ }
+ else
+#endif /* ndef FEATURE_TOGGLE */
+ {
+ url_actions(http, csp);
+ }
- if (server_body || http->ssl)
+
+ /*
+ * Check if a CONNECT request is allowable:
+ * In the absence of a +limit-connect action, allow only port 443.
+ * If there is an action, allow whatever matches the specificaton.
+ */
+ if(http->ssl)
+ {
+ if( ( !(csp->action->flags & ACTION_LIMIT_CONNECT) && csp->http->port != 443)
+ || (csp->action->flags & ACTION_LIMIT_CONNECT
+ && !match_portlist(csp->action->string[ACTION_STRING_LIMIT_CONNECT], csp->http->port)) )
+ {
+ if (csp->action->flags & ACTION_TREAT_FORBIDDEN_CONNECTS_LIKE_BLOCKS)
{
- if (content_filter)
- {
- add_to_iob(csp, buf, n);
- }
- else
- {
- if (write_socket(csp->cfd, buf, n) != n)
- {
- log_error(LOG_LEVEL_ERROR, "write to client failed: %E");
- return;
- }
- }
- byte_count += n;
- continue;
+ /*
+ * The response may confuse some clients,
+ * but makes unblocking easier.
+ */
+ log_error(LOG_LEVEL_ERROR, "Marking suspicious CONNECT request from %s for blocking.",
+ csp->ip_addr_str);
+ csp->action->flags |= ACTION_BLOCK;
+ http->ssl = 0;
}
else
{
- /* we're still looking for the end of the
- * server's header ... (does that make header
- * parsing an "out of body experience" ?
- */
+ strcpy(buf, CFORBIDDEN);
+ write_socket(csp->cfd, buf, strlen(buf));
+ log_error(LOG_LEVEL_CONNECT, "Denying suspicious CONNECT request from %s", csp->ip_addr_str);
+ log_error(LOG_LEVEL_CLF, "%s - - [%T] \" \" 403 0", csp->ip_addr_str);
+ return;
+ }
+ }
+ }
- /* buffer up the data we just read */
- add_to_iob(csp, buf, n);
- /* get header lines from the iob */
+ /*
+ * Downgrade http version from 1.1 to 1.0 if +downgrade
+ * action applies
+ */
+ if ( (http->ssl == 0)
+ && (!strcmpic(http->ver, "HTTP/1.1"))
+ && (csp->action->flags & ACTION_DOWNGRADE))
+ {
+ freez(http->ver);
+ http->ver = strdup("HTTP/1.0");
- while ((p = get_header(csp)))
- {
- if (*p == '\0')
- {
- /* see following note */
- break;
- }
- enlist(csp->headers, p);
- freez(p);
- }
+ if (http->ver == NULL)
+ {
+ log_error(LOG_LEVEL_FATAL, "Out of memory downgrading HTTP version");
+ }
+ }
- /* NOTE: there are no "empty" headers so
- * if the pointer `p' is not NULL we must
- * assume that we reached the end of the
- * buffer before we hit the end of the header.
- */
+ /*
+ * Save a copy of the original request for logging
+ */
+ http->ocmd = strdup(http->cmd);
- if (p)
- {
- if (ms_iis5_hack)
- {
- /* Well, we tried our MS IIS/5
- * hack and it didn't work.
- * The header is incomplete
- * and there isn't anything
- * we can do about it.
- */
- break;
- }
- else
- {
- /* Since we have to wait for
- * more from the server before
- * we can parse the headers
- * we just continue here.
- */
- continue;
- }
- }
+ if (http->ocmd == NULL)
+ {
+ log_error(LOG_LEVEL_FATAL, "Out of memory copying HTTP request line");
+ }
- /* we have now received the entire header.
- * filter it and send the result to the client
- */
+ /*
+ * (Re)build the HTTP request for non-SSL requests.
+ * If forwarding, use the whole URL, else, use only the path.
+ */
+ if (http->ssl == 0)
+ {
+ freez(http->cmd);
- hdr = sed(server_patterns, add_server_headers, csp);
- n = strlen(hdr);
+ http->cmd = strdup(http->gpc);
+ string_append(&http->cmd, " ");
- /* write the server's (modified) header to
- * the client (along with anything else that
- * may be in the buffer)
- */
+ if (fwd->forward_host)
+ {
+ string_append(&http->cmd, http->url);
+ }
+ else
+ {
+ string_append(&http->cmd, http->path);
+ }
+ string_append(&http->cmd, " ");
+ string_append(&http->cmd, http->ver);
-#ifdef FEATURE_KILL_POPUPS
- /* Start blocking popups if appropriate. */
+ if (http->cmd == NULL)
+ {
+ log_error(LOG_LEVEL_FATAL, "Out of memory writing HTTP command");
+ }
+ log_error(LOG_LEVEL_HEADER, "New HTTP Request-Line: %s", http->cmd);
+ }
+ enlist(csp->headers, http->cmd);
- if ((csp->content_type & CT_TEXT) && /* It's a text / * MIME-Type */
- !http->ssl && /* We talk plaintext */
- block_popups) /* Policy allows */
- {
- block_popups_now = 1;
- /*
- * Filter the part of the body that came in the same read
- * as the last headers:
- */
- filter_popups(csp->iob->cur);
- }
+ /* Append the previously read headers */
+ list_append_list_unique(csp->headers, headers);
+ destroy_list(headers);
+
+ /*
+ * If the user has not supplied any wafers, and the user has not
+ * told us to suppress the vanilla wafer, then send the vanilla wafer.
+ */
+ if (list_is_empty(csp->action->multi[ACTION_MULTI_WAFER])
+ && ((csp->action->flags & ACTION_VANILLA_WAFER) != 0))
+ {
+ enlist(csp->action->multi[ACTION_MULTI_WAFER], VANILLA_WAFER);
+ }
+
+#ifdef FEATURE_KILL_POPUPS
+ block_popups = ((csp->action->flags & ACTION_NO_POPUPS) != 0);
#endif /* def FEATURE_KILL_POPUPS */
- /* Buffer and pcrs filter this if appropriate. */
+ pcrs_filter = (csp->rlist != NULL) && /* There are expressions to be used */
+ (!list_is_empty(csp->action->multi[ACTION_MULTI_FILTER]));
- if ((csp->content_type & CT_TEXT) && /* It's a text / * MIME-Type */
- !http->ssl && /* We talk plaintext */
- pcrs_filter) /* Policy allows */
- {
- content_filter = pcrs_filter_response;
- }
+ gif_deanimate = ((csp->action->flags & ACTION_DEANIMATE) != 0);
- /* Buffer and gif_deanimate this if appropriate. */
+ jpeg_inspect = ((csp->action->flags & ACTION_JPEG_INSPECT) != 0);
- if ((csp->content_type & CT_GIF) && /* It's a image/gif MIME-Type */
- !http->ssl && /* We talk plaintext */
- gif_deanimate) /* Policy allows */
- {
- content_filter = gif_deanimate_response;
- }
+ /*
+ * We have a request. Now, check to see if we need to
+ * intercept it, i.e. If ..
+ */
+ if (
+ /* We may not forward the request by rfc2616 sect 14.31 */
+ (NULL != (rsp = direct_response(csp)))
- /*
+ /* or we are enabled and... */
+ || (IS_ENABLED_AND (
+
+ /* ..the request was blocked */
+ ( NULL != (rsp = block_url(csp)))
+
+ /* ..or untrusted */
+#ifdef FEATURE_TRUST
+ || ( NULL != (rsp = trust_url(csp)))
+#endif /* def FEATURE_TRUST */
+
+ /* ..or a redirect kicked in */
+ || ( NULL != (rsp = redirect_url(csp)))
+ ))
+
+ /*
+ * .. or a CGI call was detected and answered.
+ *
+ * This check comes last to give the user the power
+ * to deny acces to some (or all) of the cgi pages.
+ */
+ || (NULL != (rsp = dispatch_cgi(csp)))
+
+ )
+ {
+ /*
+ * Deliver, log and free the interception
+ * response. Afterwards we're done here.
+ */
+ send_crunch_response(csp, rsp);
+#ifdef FEATURE_STATISTICS
+ /* Count as a rejected request */
+ csp->flags |= CSP_FLAG_REJECTED;
+#endif /* def FEATURE_STATISTICS */
+
+ return;
+ }
+
+ hdr = sed(client_patterns, add_client_headers, csp);
+ if (hdr == NULL)
+ {
+ /* FIXME Should handle error properly */
+ log_error(LOG_LEVEL_FATAL, "Out of memory parsing client header");
+ }
+
+ list_remove_all(csp->headers);
+
+ log_error(LOG_LEVEL_GPC, "%s%s", http->hostport, http->path);
+
+ if (fwd->forward_host)
+ {
+ log_error(LOG_LEVEL_CONNECT, "via %s:%d to: %s",
+ fwd->forward_host, fwd->forward_port, http->hostport);
+ }
+ else
+ {
+ log_error(LOG_LEVEL_CONNECT, "to %s", http->hostport);
+ }
+
+ /* here we connect to the server, gateway, or the forwarder */
+
+ while ( (csp->sfd = forwarded_connect(fwd, http, csp))
+ && (errno == EINVAL) && (forwarded_connect_retries++ < max_forwarded_connect_retries))
+ {
+ log_error(LOG_LEVEL_ERROR, "failed request #%u to connect to %s. Trying again.",
+ forwarded_connect_retries, http->hostport);
+ }
+
+ if (csp->sfd == JB_INVALID_SOCKET)
+ {
+ if (fwd->type != SOCKS_NONE)
+ {
+ /* Socks error. */
+ rsp = error_response(csp, "forwarding-failed", errno);
+ }
+ else if (errno == EINVAL)
+ {
+ rsp = error_response(csp, "no-such-domain", errno);
+ }
+ else
+ {
+ rsp = error_response(csp, "connect-failed", errno);
+ log_error(LOG_LEVEL_CONNECT, "connect to: %s failed: %E",
+ http->hostport);
+ }
+
+
+ /* Write the answer to the client */
+ if(rsp != NULL)
+ {
+ send_crunch_response(csp, rsp);
+ }
+
+ freez(hdr);
+ return;
+ }
+
+ if (fwd->forward_host || (http->ssl == 0))
+ {
+ /* write the client's (modified) header to the server
+ * (along with anything else that may be in the buffer)
+ */
+
+ if (write_socket(csp->sfd, hdr, strlen(hdr))
+ || (flush_socket(csp->sfd, csp) < 0))
+ {
+ log_error(LOG_LEVEL_CONNECT, "write header to: %s failed: %E",
+ http->hostport);
+
+ rsp = error_response(csp, "connect-failed", errno);
+
+ if(rsp)
+ {
+ send_crunch_response(csp, rsp);
+ }
+
+ freez(hdr);
+ return;
+ }
+ }
+ else
+ {
+ /*
+ * We're running an SSL tunnel and we're not forwarding,
+ * so just send the "connect succeeded" message to the
+ * client, flush the rest, and get out of the way.
+ */
+ if (write_socket(csp->cfd, CSUCCEED, sizeof(CSUCCEED)-1))
+ {
+ freez(hdr);
+ return;
+ }
+ IOB_RESET(csp);
+ }
+
+ log_error(LOG_LEVEL_CONNECT, "to %s successful", http->hostport);
+
+ /* we're finished with the client's header */
+ freez(hdr);
+
+ maxfd = ( csp->cfd > csp->sfd ) ? csp->cfd : csp->sfd;
+
+ /* pass data between the client and server
+ * until one or the other shuts down the connection.
+ */
+
+ server_body = 0;
+
+ for (;;)
+ {
+#ifdef __OS2__
+ /*
+ * FD_ZERO here seems to point to an errant macro which crashes.
+ * So do this by hand for now...
+ */
+ memset(&rfds,0x00,sizeof(fd_set));
+#else
+ FD_ZERO(&rfds);
+#endif
+ FD_SET(csp->cfd, &rfds);
+ FD_SET(csp->sfd, &rfds);
+
+ n = select((int)maxfd+1, &rfds, NULL, NULL, NULL);
+
+ if (n < 0)
+ {
+ log_error(LOG_LEVEL_ERROR, "select() failed!: %E");
+ return;
+ }
+
+ /* this is the body of the browser's request
+ * just read it and write it.
+ */
+
+ if (FD_ISSET(csp->cfd, &rfds))
+ {
+ len = read_socket(csp->cfd, buf, sizeof(buf));
+
+ if (len <= 0)
+ {
+ break; /* "game over, man" */
+ }
+
+ if (write_socket(csp->sfd, buf, (size_t)len))
+ {
+ log_error(LOG_LEVEL_ERROR, "write to: %s failed: %E", http->host);
+ return;
+ }
+ continue;
+ }
+
+ /*
+ * The server wants to talk. It could be the header or the body.
+ * If `hdr' is null, then it's the header otherwise it's the body.
+ * FIXME: Does `hdr' really mean `host'? No.
+ */
+
+
+ if (FD_ISSET(csp->sfd, &rfds))
+ {
+ fflush( 0 );
+ len = read_socket(csp->sfd, buf, sizeof(buf) - 1);
+
+ if (len < 0)
+ {
+ log_error(LOG_LEVEL_ERROR, "read from: %s failed: %E", http->host);
+
+ if (http->ssl && (fwd->forward_host == NULL))
+ {
+ /*
+ * Just hang up. We already confirmed the client's CONNECT
+ * request with status code 200 and unencrypted content is
+ * no longer welcome.
+ */
+ log_error(LOG_LEVEL_ERROR,
+ "CONNECT already confirmed. Unable to tell the client about the problem.");
+ return;
+ }
+
+ rsp = error_response(csp, "connect-failed", errno);
+
+ if(rsp)
+ {
+ send_crunch_response(csp, rsp);
+ }
+
+ return;
+ }
+
+ /* Add a trailing zero. This lets filter_popups
+ * use string operations.
+ */
+ buf[len] = '\0';
+
+#ifdef FEATURE_KILL_POPUPS
+ /* Filter the popups on this read. */
+ if (block_popups_now)
+ {
+ filter_popups(buf, csp);
+ }
+#endif /* def FEATURE_KILL_POPUPS */
+
+ /* Normally, this would indicate that we've read
+ * as much as the server has sent us and we can
+ * close the client connection. However, Microsoft
+ * in its wisdom has released IIS/5 with a bug that
+ * prevents it from sending the trailing \r\n in
+ * a 302 redirect header (and possibly other headers).
+ * To work around this if we've haven't parsed
+ * a full header we'll append a trailing \r\n
+ * and see if this now generates a valid one.
+ *
+ * This hack shouldn't have any impacts. If we've
+ * already transmitted the header or if this is a
+ * SSL connection, then we won't bother with this
+ * hack. So we only work on partially received
+ * headers. If we append a \r\n and this still
+ * doesn't generate a valid header, then we won't
+ * transmit anything to the client.
+ */
+ if (len == 0)
+ {
+
+ if (server_body || http->ssl)
+ {
+ /*
+ * If we have been buffering up the document,
+ * now is the time to apply content modification
+ * and send the result to the client.
+ */
+ if (content_filter)
+ {
+ /*
+ * If the content filter fails, use the original
+ * buffer and length.
+ * (see p != NULL ? p : csp->iob->cur below)
+ */
+ if (NULL == (p = (*content_filter)(csp)))
+ {
+ csp->content_length = (size_t)(csp->iob->eod - csp->iob->cur);
+ }
+
+ hdr = sed(server_patterns_light, NULL, csp);
+
+ if (hdr == NULL)
+ {
+ /* FIXME Should handle error properly */
+ log_error(LOG_LEVEL_FATAL, "Out of memory parsing server header");
+ }
+
+ if (write_socket(csp->cfd, hdr, strlen(hdr))
+ || write_socket(csp->cfd, p != NULL ? p : csp->iob->cur, csp->content_length))
+ {
+ log_error(LOG_LEVEL_ERROR, "write modified content to client failed: %E");
+ freez(hdr);
+ freez(p);
+ return;
+ }
+
+ freez(hdr);
+ freez(p);
+ }
+
+ break; /* "game over, man" */
+ }
+
+ /*
+ * This is NOT the body, so
+ * Let's pretend the server just sent us a blank line.
+ */
+ snprintf(buf, sizeof(buf), "\r\n");
+ len = (int)strlen(buf);
+
+ /*
+ * Now, let the normal header parsing algorithm below do its
+ * job. If it fails, we'll exit instead of continuing.
+ */
+
+ ms_iis5_hack = 1;
+ }
+
+ /*
+ * If this is an SSL connection or we're in the body
+ * of the server document, just write it to the client,
+ * unless we need to buffer the body for later content-filtering
+ */
+
+ if (server_body || http->ssl)
+ {
+ if (content_filter)
+ {
+ /*
+ * If there is no memory left for buffering the content, or the buffer limit
+ * has been reached, switch to non-filtering mode, i.e. make & write the
+ * header, flush the iob and buf, and get out of the way.
+ */
+ if (add_to_iob(csp, buf, len))
+ {
+ size_t hdrlen;
+ int flushed;
+
+ log_error(LOG_LEVEL_ERROR, "Flushing header and buffers. Stepping back from filtering.");
+
+ hdr = sed(server_patterns, add_server_headers, csp);
+ if (hdr == NULL)
+ {
+ /*
+ * Memory is too tight to even generate the header.
+ * Send our static "Out-of-memory" page.
+ */
+ log_error(LOG_LEVEL_ERROR, "Out of memory while trying to flush.");
+ rsp = cgi_error_memory();
+ send_crunch_response(csp, rsp);
+
+ return;
+ }
+
+ hdrlen = strlen(hdr);
+
+ if (write_socket(csp->cfd, hdr, hdrlen)
+ || ((flushed = flush_socket(csp->cfd, csp)) < 0)
+ || (write_socket(csp->cfd, buf, (size_t)len)))
+ {
+ log_error(LOG_LEVEL_CONNECT, "Flush header and buffers to client failed: %E");
+
+ freez(hdr);
+ return;
+ }
+
+ byte_count += hdrlen + (size_t)flushed + (size_t)len;
+ freez(hdr);
+ content_filter = NULL;
+ server_body = 1;
+
+ }
+ }
+ else
+ {
+ if (write_socket(csp->cfd, buf, (size_t)len))
+ {
+ log_error(LOG_LEVEL_ERROR, "write to client failed: %E");
+ return;
+ }
+ }
+ byte_count += (size_t)len;
+ continue;
+ }
+ else
+ {
+ /* we're still looking for the end of the
+ * server's header ... (does that make header
+ * parsing an "out of body experience" ?
+ */
+
+ /*
+ * buffer up the data we just read. If that fails,
+ * there's little we can do but send our static
+ * out-of-memory page.
+ */
+ if (add_to_iob(csp, buf, len))
+ {
+ log_error(LOG_LEVEL_ERROR, "Out of memory while looking for end of server headers.");
+ rsp = cgi_error_memory();
+ send_crunch_response(csp, rsp);
+
+ return;
+ }
+
+ /* Convert iob into something sed() can digest */
+ if (JB_ERR_PARSE == get_server_headers(csp))
+ {
+ if (ms_iis5_hack)
+ {
+ /* Well, we tried our MS IIS/5
+ * hack and it didn't work.
+ * The header is incomplete
+ * and there isn't anything
+ * we can do about it.
+ */
+ break;
+ }
+ else
+ {
+ /* Since we have to wait for
+ * more from the server before
+ * we can parse the headers
+ * we just continue here.
+ */
+ continue;
+ }
+ }
+
+ /* Did we actually get anything? */
+ if (NULL == csp->headers->first)
+ {
+ log_error(LOG_LEVEL_ERROR, "Empty server or forwarder response.");
+ log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 502 0", csp->ip_addr_str, http->cmd);
+ strcpy(buf, NO_SERVER_DATA_RESPONSE);
+ write_socket(csp->cfd, buf, strlen(buf));
+ free_http_request(http);
+ return;
+ }
+
+ /* we have now received the entire header.
+ * filter it and send the result to the client
+ */
+
+ hdr = sed(server_patterns, add_server_headers, csp);
+ if (hdr == NULL)
+ {
+ /* FIXME Should handle error properly */
+ log_error(LOG_LEVEL_FATAL, "Out of memory parsing server header");
+ }
+
+#ifdef FEATURE_KILL_POPUPS
+ /* Start blocking popups if appropriate. */
+
+ if ((csp->content_type & CT_TEXT) && /* It's a text / * MIME-Type */
+ !http->ssl && /* We talk plaintext */
+ block_popups) /* Policy allows */
+ {
+ block_popups_now = 1;
+ /*
+ * Filter the part of the body that came in the same read
+ * as the last headers:
+ */
+ filter_popups(csp->iob->cur, csp);
+ }
+
+#endif /* def FEATURE_KILL_POPUPS */
+
+ /* Buffer and pcrs filter this if appropriate. */
+
+ if ((csp->content_type & CT_TEXT) && /* It's a text / * MIME-Type */
+ !http->ssl && /* We talk plaintext */
+ pcrs_filter) /* Policy allows */
+ {
+ content_filter = pcrs_filter_response;
+ }
+
+ /* Buffer and gif_deanimate this if appropriate. */
+
+ if ((csp->content_type & CT_GIF) && /* It's an image/gif MIME-Type */
+ !http->ssl && /* We talk plaintext */
+ gif_deanimate) /* Policy allows */
+ {
+ content_filter = gif_deanimate_response;
+ }
+
+ /* Buffer and jpg_inspect this if appropriate. */
+
+ if ((csp->content_type & CT_JPEG) && /* It's an image/jpeg MIME-Type */
+ !http->ssl && /* We talk plaintext */
+ jpeg_inspect) /* Policy allows */
+ {
+ content_filter = jpeg_inspect_response;
+ }
+
+ /*
* Only write if we're not buffering for content modification
*/
- if (!content_filter && ((write_socket(csp->cfd, hdr, n) != n)
- || (n = flush_socket(csp->cfd, csp) < 0)))
+ if (!content_filter)
+ {
+ /* write the server's (modified) header to
+ * the client (along with anything else that
+ * may be in the buffer)
+ */
+
+ if (write_socket(csp->cfd, hdr, strlen(hdr))
+ || ((len = flush_socket(csp->cfd, csp)) < 0))
+ {
+ log_error(LOG_LEVEL_CONNECT, "write header to client failed: %E");
+
+ /* the write failed, so don't bother
+ * mentioning it to the client...
+ * it probably can't hear us anyway.
+ */
+ freez(hdr);
+ return;
+ }
+
+ byte_count += (size_t)len;
+ }
+
+ /* we're finished with the server's header */
+
+ freez(hdr);
+ server_body = 1;
+
+ /* If this was a MS IIS/5 hack then it means
+ * the server has already closed the
+ * connection. Nothing more to read. Time
+ * to bail.
+ */
+ if (ms_iis5_hack)
{
- log_error(LOG_LEVEL_CONNECT, "write header to client failed: %E");
+ break;
+ }
+ }
+ continue;
+ }
+
+ return; /* huh? we should never get here */
+ }
+
+ if (csp->content_length == 0)
+ {
+ /*
+ * If Privoxy didn't recalculate the
+ * Content-Lenght, byte_count is still
+ * correct.
+ */
+ csp->content_length = byte_count;
+ }
+
+ log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 %d",
+ csp->ip_addr_str, http->ocmd, csp->content_length);
+}
+
+
+/*********************************************************************
+ *
+ * Function : serve
+ *
+ * Description : This is little more than chat. We only "serve" to
+ * to close any socket that chat may have opened.
+ *
+ * Parameters :
+ * 1 : csp = Current client state (buffers, headers, etc...)
+ *
+ * Returns : N/A
+ *
+ *********************************************************************/
+#ifdef AMIGA
+void serve(struct client_state *csp)
+#else /* ifndef AMIGA */
+static void serve(struct client_state *csp)
+#endif /* def AMIGA */
+{
+ chat(csp);
+ close_socket(csp->cfd);
+
+ if (csp->sfd != JB_INVALID_SOCKET)
+ {
+ close_socket(csp->sfd);
+ }
+
+ csp->flags &= ~CSP_FLAG_ACTIVE;
+
+}
+
+
+#ifdef __BEOS__
+/*********************************************************************
+ *
+ * Function : server_thread
+ *
+ * Description : We only exist to call `serve' in a threaded environment.
+ *
+ * Parameters :
+ * 1 : data = Current client state (buffers, headers, etc...)
+ *
+ * Returns : Always 0.
+ *
+ *********************************************************************/
+static int32 server_thread(void *data)
+{
+ serve((struct client_state *) data);
+ return 0;
+
+}
+#endif
+
+
+/*********************************************************************
+ *
+ * Function : usage
+ *
+ * Description : Print usage info & exit.
+ *
+ * Parameters : Pointer to argv[0] for identifying ourselves
+ *
+ * Returns : No. ,-)
+ *
+ *********************************************************************/
+void usage(const char *myname)
+{
+ printf("Privoxy version " VERSION " (" HOME_PAGE_URL ")\n"
+#if !defined(unix)
+ "Usage: %s [--help] [--version] [configfile]\n"
+#else
+ "Usage: %s [--help] [--version] [--no-daemon] [--pidfile pidfile] [--user user[.group]] [configfile]\n"
+#endif
+ "Aborting.\n", myname);
+
+ exit(2);
+
+}
+
+
+/*********************************************************************
+ *
+ * Function : initialize_mutexes
+ *
+ * Description : Prepares mutexes if mutex support is available.
+ *
+ * Parameters : None
+ *
+ * Returns : Void, exits in case of errors.
+ *
+ *********************************************************************/
+void initialize_mutexes()
+{
+ int err = 0;
+
+#ifdef FEATURE_PTHREAD
+ /*
+ * Prepare global mutex semaphores
+ */
+ err = pthread_mutex_init(&log_mutex, 0);
+
+ if (!err) err = pthread_mutex_init(&log_init_mutex, 0);
+
+ /*
+ * XXX: The assumptions below are a bit naive
+ * and can cause locks that aren't necessary.
+ *
+ * For example older FreeBSD versions (< 6.x?)
+ * have no gethostbyname_r, but gethostbyname is
+ * thead safe.
+ */
+#ifndef HAVE_GMTIME_R
+ if (!err) err = pthread_mutex_init(&gmtime_mutex, 0);
+#endif /* ndef HAVE_GMTIME_R */
+
+#ifndef HAVE_LOCALTIME_R
+ if (!err) err = pthread_mutex_init(&localtime_mutex, 0);
+#endif /* ndef HAVE_GMTIME_R */
+
+#ifndef HAVE_GETHOSTBYADDR_R
+ if (!err) err = pthread_mutex_init(&gethostbyaddr_mutex, 0);
+#endif /* ndef HAVE_GETHOSTBYADDR_R */
+
+#ifndef HAVE_GETHOSTBYNAME_R
+ if (!err) err = pthread_mutex_init(&gethostbyname_mutex, 0);
+#endif /* ndef HAVE_GETHOSTBYNAME_R */
+
+#ifndef HAVE_RANDOM
+ if (!err) err = pthread_mutex_init(&rand_mutex, 0);
+#endif /* ndef HAVE_RANDOM */
+#endif /* FEATURE_PTHREAD */
+
+ /*
+ * TODO: mutex support for mingw32 would be swell.
+ */
+
+ if (err)
+ {
+ printf("Fatal error. Mutex initialization failed: %s.\n",
+ strerror(err));
+ exit(1);
+ }
+
+ return;
+}
+
+
+/*********************************************************************
+ *
+ * Function : main
+ *
+ * Description : Load the config file and start the listen loop.
+ * This function is a lot more *sane* with the `load_config'
+ * and `listen_loop' functions; although it stills does
+ * a *little* too much for my taste.
+ *
+ * Parameters :
+ * 1 : argc = Number of parameters (including $0).
+ * 2 : argv = Array of (char *)'s to the parameters.
+ *
+ * Returns : 1 if : can't open config file, unrecognized directive,
+ * stats requested in multi-thread mode, can't open the
+ * log file, can't open the jar file, listen port is invalid,
+ * any load fails, and can't bind port.
+ *
+ * Else main never returns, the process must be signaled
+ * to terminate execution. Or, on Windows, use the
+ * "File", "Exit" menu option.
+ *
+ *********************************************************************/
+#ifdef __MINGW32__
+int real_main(int argc, const char *argv[])
+#else
+int main(int argc, const char *argv[])
+#endif
+{
+ int argc_pos = 0;
+ unsigned int random_seed;
+#ifdef unix
+ struct passwd *pw = NULL;
+ struct group *grp = NULL;
+ char *p;
+ int do_chroot = 0;
+#endif
+
+ Argc = argc;
+ Argv = argv;
+
+ configfile =
+#if !defined(_WIN32)
+ "config"
+#else
+ "config.txt"
+#endif
+ ;
+
+ /*
+ * Parse the command line arguments
+ */
+ while (++argc_pos < argc)
+ {
+#ifdef _WIN32
+ /* Check to see if the service must be installed or uninstalled */
+ if (strncmp(argv[argc_pos], "--install", 9) == 0)
+ {
+ const char *pName = argv[argc_pos] + 9;
+ if (*pName == ':')
+ pName++;
+ exit( (install_service(pName)) ? 0 : 1 );
+ }
+ else if (strncmp(argv[argc_pos], "--uninstall", + 11) == 0)
+ {
+ const char *pName = argv[argc_pos] + 11;
+ if (*pName == ':')
+ pName++;
+ exit((uninstall_service(pName)) ? 0 : 1);
+ }
+ else if (strcmp(argv[argc_pos], "--service" ) == 0)
+ {
+ bRunAsService = TRUE;
+ w32_set_service_cwd();
+ atexit(w32_service_exit_notify);
+ }
+ else
+#endif /* defined(_WIN32) */
+
+
+#if !defined(_WIN32) || defined(_WIN_CONSOLE)
+
+ if (strcmp(argv[argc_pos], "--help") == 0)
+ {
+ usage(argv[0]);
+ }
+
+ else if(strcmp(argv[argc_pos], "--version") == 0)
+ {
+ printf("Privoxy version " VERSION " (" HOME_PAGE_URL ")\n");
+ exit(0);
+ }
+
+#if defined(unix)
+
+ else if (strcmp(argv[argc_pos], "--no-daemon" ) == 0)
+ {
+ no_daemon = 1;
+ }
+
+ else if (strcmp(argv[argc_pos], "--pidfile" ) == 0)
+ {
+ if (++argc_pos == argc) usage(argv[0]);
+ pidfile = strdup(argv[argc_pos]);
+ }
+
+ else if (strcmp(argv[argc_pos], "--user" ) == 0)
+ {
+ if (++argc_pos == argc) usage(argv[argc_pos]);
+
+ if ((NULL != (p = strchr(argv[argc_pos], '.'))) && *(p + 1) != '0')
+ {
+ *p++ = '\0';
+ if (NULL == (grp = getgrnam(p)))
+ {
+ log_error(LOG_LEVEL_FATAL, "Group %s not found.", p);
+ }
+ }
+
+ if (NULL == (pw = getpwnam(argv[argc_pos])))
+ {
+ log_error(LOG_LEVEL_FATAL, "User %s not found.", argv[argc_pos]);
+ }
+
+ if (p != NULL) *--p = '\0';
+ }
+
+ else if (strcmp(argv[argc_pos], "--chroot" ) == 0)
+ {
+ do_chroot = 1;
+ }
+
+#endif /* defined(unix) */
+#endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
+ {
+ configfile = argv[argc_pos];
+ }
+
+ } /* -END- while (more arguments) */
+
+#if defined(unix)
+ if ( *configfile != '/' )
+ {
+ char *abs_file, cwd[1024];
+
+ /* make config-filename absolute here */
+ if ( !(getcwd(cwd, sizeof(cwd))))
+ {
+ perror("get working dir failed");
+ exit( 1 );
+ }
+
+ if (!(basedir = strdup(cwd))
+ || (!(abs_file = malloc( strlen( basedir ) + strlen( configfile ) + 5 ))))
+ {
+ perror("malloc failed");
+ exit( 1 );
+ }
+ strcpy( abs_file, basedir );
+ strcat( abs_file, "/" );
+ strcat( abs_file, configfile );
+ configfile = abs_file;
+ }
+#endif /* defined unix */
+
+
+ files->next = NULL;
+ clients->next = NULL;
+
+#ifdef AMIGA
+ InitAmiga();
+#elif defined(_WIN32)
+ InitWin32();
+#endif
+
+ /* Prepare mutexes if supported and necessary. */
+ initialize_mutexes();
+
+ random_seed = (unsigned int)time(NULL);
+#ifdef HAVE_RANDOM
+ srandom(random_seed);
+#else
+ srand(random_seed);
+#endif /* ifdef HAVE_RANDOM */
+
+ /*
+ * Unix signal handling
+ *
+ * Catch the abort, interrupt and terminate signals for a graceful exit
+ * Catch the hangup signal so the errlog can be reopened.
+ * Ignore the broken pipe signals (FIXME: Why?)
+ */
+#if !defined(_WIN32) && !defined(__OS2__) && !defined(AMIGA)
+{
+ int idx;
+ const int catched_signals[] = { SIGTERM, SIGINT, SIGHUP, 0 };
+ const int ignored_signals[] = { SIGPIPE, 0 };
+
+ for (idx = 0; catched_signals[idx] != 0; idx++)
+ {
+#ifdef sun /* FIXME: Is it safe to check for HAVE_SIGSET instead? */
+ if (sigset(catched_signals[idx], sig_handler) == SIG_ERR)
+#else
+ if (signal(catched_signals[idx], sig_handler) == SIG_ERR)
+#endif /* ifdef sun */
+ {
+ log_error(LOG_LEVEL_FATAL, "Can't set signal-handler for signal %d: %E", catched_signals[idx]);
+ }
+ }
+
+ for (idx = 0; ignored_signals[idx] != 0; idx++)
+ {
+ if (signal(ignored_signals[idx], SIG_IGN) == SIG_ERR)
+ {
+ log_error(LOG_LEVEL_FATAL, "Can't set ignore-handler for signal %d: %E", ignored_signals[idx]);
+ }
+ }
+
+}
+#else /* ifdef _WIN32 */
+# ifdef _WIN_CONSOLE
+ /*
+ * We *are* in a windows console app.
+ * Print a verbose messages about FAQ's and such
+ */
+ printf("%s", win32_blurb);
+# endif /* def _WIN_CONSOLE */
+#endif /* def _WIN32 */
+
+
+ /* Initialize the CGI subsystem */
+ cgi_init_error_messages();
+
+ /*
+ * If runnig on unix and without the --nodaemon
+ * option, become a daemon. I.e. fork, detach
+ * from tty and get process group leadership
+ */
+#if defined(unix)
+{
+ pid_t pid = 0;
+#if 0
+ int fd;
+#endif
+
+ if (!no_daemon)
+ {
+ pid = fork();
- /* the write failed, so don't bother
- * mentioning it to the client...
- * it probably can't hear us anyway.
- */
- freez(hdr);
- return;
- }
+ if ( pid < 0 ) /* error */
+ {
+ perror("fork");
+ exit( 3 );
+ }
+ else if ( pid != 0 ) /* parent */
+ {
+ int status;
+ pid_t wpid;
+ /*
+ * must check for errors
+ * child died due to missing files aso
+ */
+ sleep( 1 );
+ wpid = waitpid( pid, &status, WNOHANG );
+ if ( wpid != 0 )
+ {
+ exit( 1 );
+ }
+ exit( 0 );
+ }
+ /* child */
+#if 1
+ /* Should be more portable, but not as well tested */
+ setsid();
+#else /* !1 */
+#ifdef __FreeBSD__
+ setpgrp(0,0);
+#else /* ndef __FreeBSD__ */
+ setpgrp();
+#endif /* ndef __FreeBSD__ */
+ fd = open("/dev/tty", O_RDONLY);
+ if ( fd )
+ {
+ /* no error check here */
+ ioctl( fd, TIOCNOTTY,0 );
+ close ( fd );
+ }
+#endif /* 1 */
+ /* FIXME: should close stderr (fd 2) here too, but the test
+ * for existence
+ * and load config file is done in listen_loop() and puts
+ * some messages on stderr there.
+ */
- if(!content_filter) byte_count += n;
+ close( 0 );
+ close( 1 );
+ chdir("/");
- /* we're finished with the server's header */
+ } /* -END- if (!no_daemon) */
- freez(hdr);
- server_body = 1;
+ /*
+ * As soon as we have written the PID file, we can switch
+ * to the user and group ID indicated by the --user option
+ */
+ write_pid_file();
- /* If this was a MS IIS/5 hack then it means
- * the server has already closed the
- * connection. Nothing more to read. Time
- * to bail.
- */
- if (ms_iis5_hack)
- {
- break;
- }
+ if (NULL != pw)
+ {
+ if (setgid((NULL != grp) ? grp->gr_gid : pw->pw_gid))
+ {
+ log_error(LOG_LEVEL_FATAL, "Cannot setgid(): Insufficient permissions.");
+ }
+ if (do_chroot)
+ {
+ if (!pw->pw_dir)
+ {
+ log_error(LOG_LEVEL_FATAL, "Home directory for %s undefined", pw->pw_name);
}
- continue;
+ if (chroot(pw->pw_dir) < 0)
+ {
+ log_error(LOG_LEVEL_FATAL, "Cannot chroot to %s", pw->pw_dir);
+ }
+ if (chdir ("/"))
+ {
+ log_error(LOG_LEVEL_FATAL, "Cannot chdir /");
+ }
+ }
+ if (setuid(pw->pw_uid))
+ {
+ log_error(LOG_LEVEL_FATAL, "Cannot setuid(): Insufficient permissions.");
}
+ if (do_chroot)
+ {
+ char putenv_dummy[64];
- return; /* huh? we should never get here */
- }
+ strcpy(putenv_dummy, "HOME=/");
+ if (putenv(putenv_dummy) != 0)
+ {
+ log_error(LOG_LEVEL_FATAL, "Cannot putenv(): HOME");
+ }
- log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 %d",
- csp->ip_addr_str, http->cmd, byte_count);
+ snprintf(putenv_dummy, 64, "USER=%s", pw->pw_name);
+ if (putenv(putenv_dummy) != 0)
+ {
+ log_error(LOG_LEVEL_FATAL, "Cannot putenv(): USER");
+ }
+ }
+ }
+ else if (do_chroot)
+ {
+ log_error(LOG_LEVEL_FATAL, "Cannot chroot without --user argument.");
+ }
}
+#endif /* defined unix */
-
-/*********************************************************************
- *
- * Function : serve
- *
- * Description : This is little more than chat. We only "serve" to
- * to close any socket that chat may have opened.
- *
- * Parameters :
- * 1 : csp = Current client state (buffers, headers, etc...)
- *
- * Returns : N/A
- *
- *********************************************************************/
-#ifdef AMIGA
-void serve(struct client_state *csp)
-#else /* ifndef AMIGA */
-static void serve(struct client_state *csp)
-#endif /* def AMIGA */
-{
- chat(csp);
- close_socket(csp->cfd);
-
- if (csp->sfd >= 0)
+#ifdef _WIN32
+ /* This will be FALSE unless the command line specified --service
+ */
+ if (bRunAsService)
{
- close_socket(csp->sfd);
- }
+ /* Yup, so now we must attempt to establish a connection
+ * with the service dispatcher. This will only work if this
+ * process was launched by the service control manager to
+ * actually run as a service. If this isn't the case, i've
+ * known it take around 30 seconds or so for the call to return.
+ */
- csp->active = 0;
+ /* The StartServiceCtrlDispatcher won't return until the service is stopping */
+ if (w32_start_service_ctrl_dispatcher(w32ServiceDispatchTable))
+ {
+ /* Service has run, and at this point is now being stopped, so just return */
+ return 0;
+ }
-}
+#ifdef _WIN_CONSOLE
+ printf("Warning: Failed to connect to Service Control Dispatcher\nwhen starting as a service!\n");
+#endif
+ /* An error occurred. Usually it's because --service was wrongly specified
+ * and we were unable to connect to the Service Control Dispatcher because
+ * it wasn't expecting us and is therefore not listening.
+ *
+ * For now, just continue below to call the listen_loop function.
+ */
+ }
+#endif /* def _WIN32 */
+ listen_loop();
-#ifdef __BEOS__
-/*********************************************************************
- *
- * Function : server_thread
- *
- * Description : We only exist to call `serve' in a threaded environment.
- *
- * Parameters :
- * 1 : data = Current client state (buffers, headers, etc...)
- *
- * Returns : Always 0.
- *
- *********************************************************************/
-static int32 server_thread(void *data)
-{
- serve((struct client_state *) data);
- return 0;
+ /* NOTREACHED */
+ return(-1);
}
-#endif
/*********************************************************************
*
- * Function : main
+ * Function : bind_port_helper
*
- * Description : Load the config file and start the listen loop.
- * This function is a lot more *sane* with the `load_config'
- * and `listen_loop' functions; although it stills does
- * a *little* too much for my taste.
+ * Description : Bind the listen port. Handles logging, and aborts
+ * on failure.
*
* Parameters :
- * 1 : argc = Number of parameters (including $0).
- * 2 : argv = Array of (char *)'s to the parameters.
- *
- * Returns : 1 if : can't open config file, unrecognized directive,
- * stats requested in multi-thread mode, can't open the
- * log file, can't open the jar file, listen port is invalid,
- * any load fails, and can't bind port.
+ * 1 : config = Privoxy configuration. Specifies port
+ * to bind to.
*
- * Else main never returns, the process must be signaled
- * to terminate execution. Or, on Windows, use the
- * "File", "Exit" menu option.
+ * Returns : Port that was opened.
*
*********************************************************************/
-#ifdef __MINGW32__
-int real_main(int argc, const char *argv[])
-#else
-int main(int argc, const char *argv[])
-#endif
+static jb_socket bind_port_helper(struct configuration_spec * config)
{
- configfile =
-#ifdef AMIGA
- "AmiTCP:db/junkbuster/config"
-#elif !defined(_WIN32)
- "config"
-#else
- "junkbstr.txt"
-#endif
- ;
-
-#if !defined(_WIN32) || defined(_WIN_CONSOLE)
- if ((argc >= 2) && (strcmp(argv[1], "--help")==0))
+ int result;
+ jb_socket bfd;
+
+ if ( (config->haddr != NULL)
+ && (config->haddr[0] == '1')
+ && (config->haddr[1] == '2')
+ && (config->haddr[2] == '7')
+ && (config->haddr[3] == '.') )
{
- printf("JunkBuster proxy version " VERSION ".\n\n"
- "Usage: %s [configfile]\n\n"
- "See " HOME_PAGE_URL " for details.\n"
- "This program is distributed under the GNU GPL, version 2 or later.\n",
- argv[0]);
- exit(2);
+ log_error(LOG_LEVEL_INFO, "Listening on port %d for local connections only",
+ config->hport);
}
- if ((argc >= 2) && (strcmp(argv[1], "--version")==0))
+ else if (config->haddr == NULL)
{
- printf(VERSION "\n");
- exit(2);
+ log_error(LOG_LEVEL_INFO, "Listening on port %d on all IP addresses",
+ config->hport);
}
-#endif /* !defined(_WIN32) || defined(_WIN_CONSOLE) */
-
- Argc = argc;
- Argv = argv;
-
- if (argc > 1)
+ else
{
- configfile = argv[1];
+ log_error(LOG_LEVEL_INFO, "Listening on port %d on IP address %s",
+ config->hport, config->haddr);
}
- files->next = NULL;
+ result = bind_port(config->haddr, config->hport, &bfd);
-#ifdef AMIGA
- InitAmiga();
-#elif defined(_WIN32)
- InitWin32();
-#endif
+ if (result < 0)
+ {
+ switch(result)
+ {
+ case -3 :
+ log_error(LOG_LEVEL_FATAL, "can't bind to %s:%d: "
+ "There may be another Privoxy or some other "
+ "proxy running on port %d",
+ (NULL != config->haddr) ? config->haddr : "INADDR_ANY",
+ config->hport, config->hport);
+
+ case -2 :
+ log_error(LOG_LEVEL_FATAL, "can't bind to %s:%d: "
+ "The hostname is not resolvable",
+ (NULL != config->haddr) ? config->haddr : "INADDR_ANY", config->hport);
+
+ default :
+ log_error(LOG_LEVEL_FATAL, "can't bind to %s:%d: because %E",
+ (NULL != config->haddr) ? config->haddr : "INADDR_ANY", config->hport);
+ }
+ /* shouldn't get here */
+ return JB_INVALID_SOCKET;
+ }
-#ifndef _WIN32
- signal(SIGPIPE, SIG_IGN);
- signal(SIGCHLD, SIG_IGN);
+ config->need_bind = 0;
-#else /* ifdef _WIN32 */
-# ifdef _WIN_CONSOLE
- /*
- * We *are* in a windows console app.
- * Print a verbose messages about FAQ's and such
- */
- printf(win32_blurb);
-# endif /* def _WIN_CONSOLE */
-#endif /* def _WIN32 */
+ return bfd;
+}
+#ifdef _WIN32
+/* Without this simple workaround we get this compiler warning from _beginthread
+ * warning C4028: formal parameter 1 different from declaration
+ */
+void w32_service_listen_loop(void *p)
+{
listen_loop();
-
- /* NOTREACHED */
- return(-1);
-
}
+#endif /* def _WIN32 */
/*********************************************************************
static void listen_loop(void)
{
struct client_state *csp = NULL;
- int bfd;
+ jb_socket bfd;
struct configuration_spec * config;
config = load_config();
- log_error(LOG_LEVEL_CONNECT, "bind (%s, %d)",
- config->haddr ? config->haddr : "INADDR_ANY", config->hport);
-
- bfd = bind_port(config->haddr, config->hport);
-
- if (bfd < 0)
- {
- log_error(LOG_LEVEL_FATAL, "can't bind %s:%d: %E "
- "- There may be another junkbuster or some other "
- "proxy running on port %d",
- (NULL != config->haddr) ? config->haddr : "INADDR_ANY",
- config->hport, config->hport
- );
- /* shouldn't get here */
- return;
- }
-
- config->need_bind = 0;
-
+ bfd = bind_port_helper(config);
- while (FOREVER)
+#ifdef FEATURE_GRACEFUL_TERMINATION
+ while (!g_terminate)
+#else
+ for (;;)
+#endif
{
-#if !defined(FEATURE_PTHREAD) && !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA)
+#if !defined(FEATURE_PTHREAD) && !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__)
while (waitpid(-1, NULL, WNOHANG) > 0)
{
/* zombie children */
}
#endif /* !defined(FEATURE_PTHREAD) && !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) */
+
+ /*
+ * Free data that was used by died threads
+ */
sweep();
+#if defined(unix)
+ /*
+ * Re-open the errlog after HUP signal
+ */
+ if (received_hup_signal)
+ {
+ init_error_log(Argv[0], config->logfile, config->debug);
+ received_hup_signal = 0;
+ }
+#endif
+
+#ifdef __OS2__
+#ifdef FEATURE_COOKIE_JAR
+ /*
+ * Need a workaround here: we have to fclose() the jarfile, or we die because it's
+ * already open. I think unload_configfile() is not being run, which should do
+ * this work. Until that can get resolved, we'll use this workaround.
+ */
+ if (csp)
+ if(csp->config)
+ if (csp->config->jar)
+ {
+ fclose(csp->config->jar);
+ csp->config->jar = NULL;
+ }
+#endif /* FEATURE_COOKIE_JAR */
+#endif /* __OS2__ */
+
if ( NULL == (csp = (struct client_state *) zalloc(sizeof(*csp))) )
{
log_error(LOG_LEVEL_FATAL, "malloc(%d) for csp failed: %E", sizeof(*csp));
continue;
}
- memset(csp, '\0', sizeof(*csp));
-
- csp->active = 1;
- csp->sfd = -1;
+ csp->flags |= CSP_FLAG_ACTIVE;
+ csp->sfd = JB_INVALID_SOCKET;
csp->config = config = load_config();
close_socket(bfd);
- log_error(LOG_LEVEL_CONNECT, "bind (%s, %d)",
- config->haddr ? config->haddr : "INADDR_ANY", config->hport);
- bfd = bind_port(config->haddr, config->hport);
-
- if (bfd < 0)
- {
- log_error(LOG_LEVEL_FATAL, "can't bind %s:%d: %E "
- "- There may be another junkbuster or some other "
- "proxy running on port %d",
- (NULL != config->haddr) ? config->haddr : "INADDR_ANY",
- config->hport, config->hport
- );
- /* shouldn't get here */
- return;
- }
-
- config->need_bind = 0;
+ bfd = bind_port_helper(config);
}
- log_error(LOG_LEVEL_CONNECT, "accept connection ... ");
+ log_error(LOG_LEVEL_CONNECT, "Listening for new connections ... ");
if (!accept_connection(csp, bfd))
{
#ifdef AMIGA
if(!childs)
{
- exit(1);
+ exit(1);
}
#endif
freez(csp);
}
else
{
- log_error(LOG_LEVEL_CONNECT, "OK");
+ log_error(LOG_LEVEL_CONNECT, "accepted connection from %s", csp->ip_addr_str);
}
#ifdef FEATURE_TOGGLE
- /* by haroon - most of credit to srt19170 */
- csp->toggled_on = g_bToggleIJB;
+ if (global_toggle_state)
+ {
+ csp->flags |= CSP_FLAG_TOGGLED_ON;
+ }
#endif /* def FEATURE_TOGGLE */
if (run_loader(csp))
#ifdef FEATURE_ACL
if (block_acl(NULL,csp))
{
- log_error(LOG_LEVEL_CONNECT, "Connection dropped due to ACL");
+ log_error(LOG_LEVEL_CONNECT, "Connection from %s dropped due to ACL", csp->ip_addr_str);
close_socket(csp->cfd);
freez(csp);
continue;
pthread_attr_init(&attrs);
pthread_attr_setdetachstate(&attrs, PTHREAD_CREATE_DETACHED);
- child_id = (pthread_create(&the_thread, &attrs,
- (void*)serve, csp) ? -1 : 0);
+ errno = pthread_create(&the_thread, &attrs,
+ (void * (*)(void *))serve, csp);
+ child_id = errno ? -1 : 0;
pthread_attr_destroy(&attrs);
}
#endif
#if defined(_WIN32) && !defined(_CYGWIN) && !defined(SELECTED_ONE_OPTION)
#define SELECTED_ONE_OPTION
child_id = _beginthread(
- (void*)serve,
+ (void (*)(void *))serve,
+ 64 * 1024,
+ csp);
+#endif
+
+#if defined(__OS2__) && !defined(SELECTED_ONE_OPTION)
+#define SELECTED_ONE_OPTION
+ child_id = _beginthread(
+ (void(* _Optlink)(void*))serve,
+ NULL,
64 * 1024,
csp);
#endif
#if defined(AMIGA) && !defined(SELECTED_ONE_OPTION)
#define SELECTED_ONE_OPTION
csp->cfd = ReleaseSocket(csp->cfd, -1);
- if((child_id = (int)CreateNewProcTags(
- NP_Entry, (ULONG)server_thread,
- NP_Output, Output(),
- NP_CloseOutput, FALSE,
- NP_Name, (ULONG)"junkbuster child",
- NP_StackSize, 200*1024,
- TAG_DONE)))
+
+#ifdef __amigaos4__
+ child_id = (int)CreateNewProcTags(NP_Entry, (ULONG)server_thread,
+ NP_Output, Output(),
+ NP_CloseOutput, FALSE,
+ NP_Name, (ULONG)"privoxy child",
+ NP_Child, TRUE,
+ TAG_DONE);
+#else
+ child_id = (int)CreateNewProcTags(NP_Entry, (ULONG)server_thread,
+ NP_Output, Output(),
+ NP_CloseOutput, FALSE,
+ NP_Name, (ULONG)"privoxy child",
+ NP_StackSize, 200*1024,
+ TAG_DONE);
+#endif
+ if(0 != child_id)
{
childs++;
((struct Task *)child_id)->tc_UserData = csp;
*/
if (child_id == 0) /* child */
{
+ int rc = 0;
+#ifdef FEATURE_TOGGLE
+ int inherited_toggle_state = global_toggle_state;
+#endif /* def FEATURE_TOGGLE */
+
serve(csp);
- _exit(0);
+ /*
+ * If we've been toggled or we've blocked the request, tell Mom
+ */
+
+#ifdef FEATURE_TOGGLE
+ if (inherited_toggle_state != global_toggle_state)
+ {
+ rc |= RC_FLAG_TOGGLED;
+ }
+#endif /* def FEATURE_TOGGLE */
+
+#ifdef FEATURE_STATISTICS
+ if (csp->flags & CSP_FLAG_REJECTED)
+ {
+ rc |= RC_FLAG_BLOCKED;
+ }
+#endif /* ndef FEATURE_STATISTICS */
+
+ _exit(rc);
}
else if (child_id > 0) /* parent */
{
* copy of the client socket and the CSP
* are not used.
*/
+ int child_status;
+#if !defined(_WIN32) && !defined(__CYGWIN__)
+
+ wait( &child_status );
+
+ /*
+ * Evaluate child's return code: If the child has
+ * - been toggled, toggle ourselves
+ * - blocked its request, bump up the stats counter
+ */
+
+#ifdef FEATURE_TOGGLE
+ if (WIFEXITED(child_status) && (WEXITSTATUS(child_status) & RC_FLAG_TOGGLED))
+ {
+ global_toggle_state = !global_toggle_state;
+ }
+#endif /* def FEATURE_TOGGLE */
+
+#ifdef FEATURE_STATISTICS
+ urls_read++;
+ if (WIFEXITED(child_status) && (WEXITSTATUS(child_status) & RC_FLAG_BLOCKED))
+ {
+ urls_rejected++;
+ }
+#endif /* def FEATURE_STATISTICS */
-#if !defined(_WIN32) && defined(__CYGWIN__)
- wait( NULL );
#endif /* !defined(_WIN32) && defined(__CYGWIN__) */
close_socket(csp->cfd);
- csp->active = 0;
+ csp->flags &= ~CSP_FLAG_ACTIVE;
}
#endif
log_error(LOG_LEVEL_ERROR, "can't fork: %E");
- sprintf(buf , "JunkBuster: can't fork: errno = %d", errno);
+ snprintf(buf , sizeof(buf), "Privoxy: can't fork: errno = %d", errno);
write_socket(csp->cfd, buf, strlen(buf));
close_socket(csp->cfd);
- csp->active = 0;
+ csp->flags &= ~CSP_FLAG_ACTIVE;
sleep(5);
continue;
}
serve(csp);
}
}
- /* NOTREACHED */
+
+ /* NOTREACHED unless FEATURE_GRACEFUL_TERMINATION is defined */
+
+ /* Clean up. Aim: free all memory (no leaks) */
+#ifdef FEATURE_GRACEFUL_TERMINATION
+
+ log_error(LOG_LEVEL_ERROR, "Graceful termination requested");
+
+ unload_current_config_file();
+ unload_current_actions_file();
+ unload_current_re_filterfile();
+#ifdef FEATURE_TRUST
+ unload_current_trust_file();
+#endif
+
+ if (config->multi_threaded)
+ {
+ int i = 60;
+ do
+ {
+ sleep(1);
+ sweep();
+ } while ((clients->next != NULL) && (--i > 0));
+
+ if (i <= 0)
+ {
+ log_error(LOG_LEVEL_ERROR, "Graceful termination failed - still some live clients after 1 minute wait.");
+ }
+ }
+ sweep();
+ sweep();
+
+#if defined(unix)
+ freez(basedir);
+#endif
+ freez(configfile);
+
+#ifdef FEATURE_COOKIE_JAR
+ if (NULL != config->jar)
+ {
+ fclose(config->jar);
+ }
+#endif
+
+#if defined(_WIN32) && !defined(_WIN_CONSOLE)
+ /* Cleanup - remove taskbar icon etc. */
+ TermLogWindow();
+#endif
+
+ exit(0);
+#endif /* FEATURE_GRACEFUL_TERMINATION */
}
projects / privoxy.git / blobdiff