X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=jcc.c;h=6b17d1f4e8e198aeb533702bae872b8fb759f10d;hp=f167a8b891efd24532e60a98d8d81bb5d0b32de0;hb=68d4f6cc9b843e65f5cad22a17fca3f91935b2a2;hpb=b44e0618c89242200fef75b47d93c57b944cb24d diff --git a/jcc.c b/jcc.c index f167a8b8..6b17d1f4 100644 --- a/jcc.c +++ b/jcc.c @@ -1,4 +1,4 @@ -const char jcc_rcs[] = "$Id: jcc.c,v 1.1.1.1 2001/05/15 13:58:56 oes Exp $"; +const char jcc_rcs[] = "$Id: jcc.c,v 1.5 2001/05/22 18:46:04 oes Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/jcc.c,v $ @@ -33,6 +33,71 @@ const char jcc_rcs[] = "$Id: jcc.c,v 1.1.1.1 2001/05/15 13:58:56 oes Exp $"; * * Revisions : * $Log: jcc.c,v $ + * Revision 1.5 2001/05/22 18:46:04 oes + * + * - Enabled filtering banners by size rather than URL + * by adding patterns that replace all standard banner + * sizes with the "Junkbuster" gif to the re_filterfile + * + * - Enabled filtering WebBugs by providing a pattern + * which kills all 1x1 images + * + * - Added support for PCRE_UNGREEDY behaviour to pcrs, + * which is selected by the (nonstandard and therefore + * capital) letter 'U' in the option string. + * It causes the quantifiers to be ungreedy by default. + * Appending a ? turns back to greedy (!). + * + * - Added a new interceptor ijb-send-banner, which + * sends back the "Junkbuster" gif. Without imagelist or + * MSIE detection support, or if tinygif = 1, or the + * URL isn't recognized as an imageurl, a lame HTML + * explanation is sent instead. + * + * - Added new feature, which permits blocking remote + * script redirects and firing back a local redirect + * to the browser. + * The feature is conditionally compiled, i.e. it + * can be disabled with --disable-fast-redirects, + * plus it must be activated by a "fast-redirects" + * line in the config file, has its own log level + * and of course wants to be displayed by show-proxy-args + * Note: Boy, all the #ifdefs in 1001 locations and + * all the fumbling with configure.in and acconfig.h + * were *way* more work than the feature itself :-( + * + * - Because a generic redirect template was needed for + * this, tinygif = 3 now uses the same. + * + * - Moved GIFs, and other static HTTP response templates + * to project.h + * + * - Some minor fixes + * + * - Removed some >400 CRs again (Jon, you really worked + * a lot! ;-) + * + * Revision 1.4 2001/05/21 19:34:01 jongfoster + * Made failure to bind() a fatal error. + * + * Revision 1.3 2001/05/20 01:21:20 jongfoster + * Version 2.9.4 checkin. + * - Merged popupfile and cookiefile, and added control over PCRS + * filtering, in new "permissionsfile". + * - Implemented LOG_LEVEL_FATAL, so that if there is a configuration + * file error you now get a message box (in the Win32 GUI) rather + * than the program exiting with no explanation. + * - Made killpopup use the PCRS MIME-type checking and HTTP-header + * skipping. + * - Removed tabs from "config" + * - Moved duplicated url parsing code in "loaders.c" to a new funcition. + * - Bumped up version number. + * + * Revision 1.2 2001/05/17 22:34:44 oes + * - Added hint on GIF char array generation to jcc.c + * - Cleaned CRLF's from the sources and related files + * - Repaired logging for REF and FRC + * * Revision 1.1.1.1 2001/05/15 13:58:56 oes * Initial import of version 2.9.3 source tree * @@ -112,95 +177,16 @@ int urls_rejected = 0; /* total nr of urls rejected */ static void listen_loop(void); static void chat(struct client_state *csp); +#ifdef AMIGA +void serve(struct client_state *csp); +#else /* ifndef AMIGA */ static void serve(struct client_state *csp); +#endif /* def AMIGA */ + #ifdef __BEOS__ static int32 server_thread(void *data); #endif /* def __BEOS__ */ - -#define BODY "\n" - -static const char CFAIL[] = - "HTTP/1.0 503 Connect failed\n" - "Content-Type: text/html\n\n" - "\n" - "\n" - "Internet Junkbuster: Connect failed\n" - "\n" - BODY - "

" - BANNER - "

" - "TCP connection to '%s' failed: %s.\n
" - "\n" - "\n"; - -static const char CNXDOM[] = - "HTTP/1.0 404 Non-existent domain\n" - "Content-Type: text/html\n\n" - "\n" - "\n" - "Internet Junkbuster: Non-existent domain\n" - "\n" - BODY - "

" - BANNER - "

" - "No such domain: %s\n" - "\n" - "\n"; - -static const char CSUCCEED[] = - "HTTP/1.0 200 Connection established\n" - "Proxy-Agent: IJ/" VERSION "\n\n"; - -static const char CHEADER[] = - "HTTP/1.0 400 Invalid header received from browser\n\n"; - -static const char SHEADER[] = - "HTTP/1.0 502 Invalid header received from server\n\n"; - -#if defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) - -/* - * Hint: You can encode your own GIFs like that: - * perl -e 'while (read STDIN, $c, 1) { printf("\\%.3o,", unpack("C", $c)); }' - */ - -static const char BLANKGIF[] = - "HTTP/1.0 200 OK\r\n" - "Pragma: no-cache\r\n" - "Last-Modified: Thu Jul 31, 1997 07:42:22 pm GMT\r\n" - "Expires: Thu Jul 31, 1997 07:42:22 pm GMT\r\n" - "Content-type: image/gif\r\n\r\n" - "GIF89a\001\000\001\000\200\000\000\377\377\377\000\000" - "\000!\371\004\001\000\000\000\000,\000\000\000\000\001" - "\000\001\000\000\002\002D\001\000;"; - -static const char JBGIF[] = - "HTTP/1.0 200 OK\r\n" - "Pragma: no-cache\r\n" - "Last-Modified: Thu Jul 31, 1997 07:42:22 pm GMT\r\n" - "Expires: Thu Jul 31, 1997 07:42:22 pm GMT\r\n" - "Content-type: image/gif\r\n\r\n" - "GIF89aD\000\013\000\360\000\000\000\000\000\377\377\377!" - "\371\004\001\000\000\001\000,\000\000\000\000D\000\013\000" - "\000\002a\214\217\251\313\355\277\000\200G&K\025\316hC\037" - "\200\234\230Y\2309\235S\230\266\206\372J\253<\3131\253\271" - "\270\215\342\254\013\203\371\202\264\334P\207\332\020o\266" - "N\215I\332=\211\312\3513\266:\026AK)\364\370\365aobr\305" - "\372\003S\275\274k2\354\254z\347?\335\274x\306^9\374\276" - "\037Q\000\000;"; - -static const char FWGIF[] = - "HTTP/1.0 302 Blocked Advert\r\n" - "Pragma: no-cache\r\n" - "Last-Modified: Thu Jul 31, 1997 07:42:22 pm GMT\r\n" - "Expires: Thu Jul 31, 1997 07:42:22 pm GMT\r\n" - "Location: "; - -#endif /* defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) */ - #ifdef _WIN32 #define sleep(N) Sleep(((N) * 1000)) #endif @@ -229,16 +215,36 @@ static const char FWGIF[] = *********************************************************************/ static void chat(struct client_state *csp) { +/* This next line is a little ugly, but it simplifies the if statement below. */ +/* Basically if TOGGLE, then we want the if to test "csp->toggled_on", else we don't */ +#ifdef TOGGLE +# define IS_TOGGLED_ON csp->toggled_on && +#else /* ifndef TOGGLE */ +# define IS_TOGGLED_ON +#endif /* ndef TOGGLE */ + +/* This next line is a little ugly, but it simplifies the if statement below. */ +/* Basically if TRUST_FILES, then we want the if to call "trust_url", else we don't */ +#ifdef TRUST_FILES +# define IS_TRUSTED_URL (p = trust_url(http, csp)) || +#else /* ifndef TRUST_FILES */ +# define IS_TRUSTED_URL +#endif /* ndef TRUST_FILES */ + char buf[BUFSIZ], *hdr, *p, *req; char *err = NULL; char *eno; fd_set rfds; int n, maxfd, server_body, ms_iis5_hack = 0; - struct cookie_spec *cs; const struct gateway *gw; struct http_request *http; +#ifdef KILLPOPUPS + int block_popups; /* bool, 1==will block popups */ + int block_popups_now = 0; /* bool, 1==currently blocking popups */ +#endif /* def KILLPOPUPS */ #ifdef PCRS - int filtering = 0; + int pcrs_filter; /* bool, 1==will filter through pcrs */ + int filtering = 0; /* bool, 1==currently filtering through pcrs */ #endif /* def PCRS */ http = csp->http; @@ -276,7 +282,7 @@ static void chat(struct client_state *csp) if(strstr(req, FORCE_PREFIX)) { strclean(req, FORCE_PREFIX); - log_error(LOG_LEVEL_FRC, "Enforcing request \"%s\".\n", req); + log_error(LOG_LEVEL_FORCE, "Enforcing request \"%s\".\n", req); csp->force = 1; } else @@ -301,8 +307,8 @@ static void chat(struct client_state *csp) if ((gw = forward_url(http, csp)) == NULL) { - log_error(LOG_LEVEL_ERROR, "gateway spec is NULL!?!? This can't happen!"); - abort(); + 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 @@ -353,29 +359,28 @@ static void chat(struct client_state *csp) /* decide what we're to do with cookies */ -#if defined(TOGGLE) - /* - * by haroon - most of credit to srt19170 - * if toggled_on flag is false IJB is disabled, pass cookies thru - */ +#ifdef TOGGLE if (!csp->toggled_on) { - csp->accept_server_cookie = 1; - csp->send_user_cookie = 1; - } - else -#endif - - if ((cs = cookie_url(http, csp))) - { - csp->accept_server_cookie = cs->accept_server_cookie; - csp->send_user_cookie = cs->send_user_cookie; + /* Most compatible set of permissions */ + csp->permissions = PERMIT_COOKIE_SET | PERMIT_COOKIE_READ | PERMIT_POPUPS; } else { - csp->accept_server_cookie = 0; - csp->send_user_cookie = 0; + csp->permissions = url_permissions(http, csp); } +#else /* ifndef TOGGLE */ + csp->permissions = url_permissions(http, csp); +#endif /* ndef TOGGLE */ + +#ifdef KILLPOPUPS + block_popups = ((csp->permissions & PERMIT_POPUPS) == 0); +#endif /* def KILLPOPUPS */ +#ifdef PCRS + pcrs_filter = (csp->rlist != NULL) && /* There are expressions to be used */ + ((csp->permissions & PERMIT_RE_FILTER) != 0); +#endif /* def PCRS */ + /* grab the rest of the client's headers */ @@ -405,40 +410,8 @@ static void chat(struct client_state *csp) destroy_list(csp->headers); -#ifdef TOGGLE - /* - * by haroon - most of credit to srt19170 - * if toggled_on flag is true then IJB is enabled, do the usual - * otherwise avoid crunching - */ - -/* This next line is a little ugly, but it simplifies the if statement below. */ -/* Basically if TOGGLE, then we want the if to test "csp->toggled_on", else we don't */ -#define IS_TOGGLED_ON csp->toggled_on && - -#else /* ifndef TOGGLE */ - -/* We don't have TOGGLE, so we don't care about toggling. */ -#define IS_TOGGLED_ON - -#endif /* ndef TOGGLE */ - - -#ifdef TRUST_FILES -/* This next line is a little ugly, but it simplifies the if statement below. */ -/* Basically if TRUST_FILES, then we want the if to call "trust_url", else we don't */ -#define IS_TRUSTED_URL (p = trust_url(http, csp)) || - -#else /* ifndef TRUST_FILES */ - -/* We don't have TRUST_FILES, so we don't care about trusted URL's. */ -#define IS_TRUSTED_URL - -#endif /* ndef TRUST_FILES */ - - /* Check the request against all rules, unless - * we're disabled or in force mode. + * we're toggled off or in force mode. */ if (IS_TOGGLED_ON @@ -447,7 +420,11 @@ static void chat(struct client_state *csp) #endif /* def FORCE_LOAD */ ( (p = intercept_url(http, csp)) || IS_TRUSTED_URL - (p = block_url(http, csp)) )) + (p = block_url(http, csp)) +#ifdef FAST_REDIRECTS + || (fast_redirects && (p = redirect_url(http, csp))) +#endif /* def FAST_REDIRECTS */ + )) { #ifdef STATISTICS csp->rejected = 1; @@ -456,21 +433,26 @@ static void chat(struct client_state *csp) log_error(LOG_LEVEL_GPC, "%s%s crunch!", http->hostport, http->path); #if defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) - /* now use block_imageurl */ + /* Block as image? */ if ( (tinygif > 0) && block_imageurl(http, csp) ) { /* Send "blocked" image */ log_error(LOG_LEVEL_GPC, "%s%s image crunch!", http->hostport, http->path); + if ((tinygif == 2) || strstr(http->path, "ijb-send-banner")) + { + write_socket(csp->cfd, JBGIF, sizeof(JBGIF)-1); + } if (tinygif == 1) { write_socket(csp->cfd, BLANKGIF, sizeof(BLANKGIF)-1); } else if ((tinygif == 3) && (tinygifurl)) { - write_socket(csp->cfd, FWGIF, sizeof(FWGIF)-1); - write_socket(csp->cfd, tinygifurl, strlen(tinygifurl)); + p = (char *)malloc(strlen(HTTP_REDIRECT_TEMPLATE) + strlen(tinygifurl)); + sprintf(p, HTTP_REDIRECT_TEMPLATE, tinygifurl); + write_socket(csp->cfd, p, strlen(p)); } else { @@ -479,8 +461,9 @@ static void chat(struct client_state *csp) } else #endif /* defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) */ + /* Block as HTML */ { - /* Send HTML "blocked" message */ + /* Send HTML "blocked" message, interception, or redirection result */ write_socket(csp->cfd, p, strlen(p)); } @@ -648,11 +631,9 @@ static void chat(struct client_state *csp) #ifdef KILLPOPUPS /* Filter the popups on this read. */ - if ( IS_TOGGLED_ON - ( kill_all_popups || - ( ( http->host != NULL ) && ( popupfile != NULL ) ) ) ) + if (block_popups_now) { - filter_popups(csp, http->host, buf, n); + filter_popups(buf, n); } #endif /* def KILLPOPUPS */ @@ -787,14 +768,24 @@ static void chat(struct client_state *csp) * may be in the buffer) */ +#ifdef KILLPOPUPS + /* Start blocking popups if appropriate. */ + + if (csp->is_text && /* It's a text / * MIME-Type */ + !http->ssl && /* We talk plaintext */ + block_popups) + { + block_popups_now = 1; + } + +#endif /* def KILLPOPUPS */ + #ifdef PCRS - /* Decide if we want to re_filter this. */ + /* Start re_filtering this if appropriate. */ - if (IS_TOGGLED_ON /* Only filter if toggle is "on" */ - csp->is_text && /* It's a text / * MIME-Type */ - re_filterfile && /* There are expressions to be used */ + if (csp->is_text && /* It's a text / * MIME-Type */ !http->ssl && /* We talk plaintext */ - (re_filter_all || !csp->send_user_cookie)) /* Policy allows */ + pcrs_filter) /* Policy allows */ { filtering = 1; } @@ -861,7 +852,11 @@ static void chat(struct client_state *csp) * 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); @@ -930,7 +925,9 @@ int main(int argc, const char *argv[]) #endif { configfile = -#ifndef _WIN32 +#ifdef AMIGA + "AmiTCP:db/junkbuster.config" +#elif !defined(_WIN32) "config" #else "junkbstr.txt" @@ -954,6 +951,10 @@ int main(int argc, const char *argv[]) } #endif /* !defined(_WIN32) || defined(_WIN_CONSOLE) */ +#ifdef AMIGA + InitAmiga(); +#endif + Argc = argc; Argv = argv; @@ -1031,11 +1032,12 @@ static void listen_loop(void) if (bfd < 0) { - log_error(LOG_LEVEL_ERROR, "can't bind %s:%d: %E " + 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 != haddr) ? haddr : "INADDR_ANY", hport, hport ); + /* shouldn't get here */ return; } @@ -1114,8 +1116,8 @@ static void listen_loop(void) if (run_loader(csp)) { - log_error(LOG_LEVEL_ERROR, "a loader failed - must exit"); - return; + log_error(LOG_LEVEL_FATAL, "a loader failed - must exit"); + /* Never get here - LOG_LEVEL_FATAL causes program exit */ } if (multi_threaded)