X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=jcc.c;h=e0813497db93796eea4334f38af89caedbbf0a5a;hp=b114d257345123eb84ea6f46388e0741a7b261a4;hb=622f8b00129cfb6abeb0d90f095b5ca5dd9d6c35;hpb=014e796377eafac5f1875e61282d48cb337dbdce diff --git a/jcc.c b/jcc.c index b114d257..e0813497 100644 --- a/jcc.c +++ b/jcc.c @@ -1,4 +1,4 @@ -const char jcc_rcs[] = "$Id: jcc.c,v 1.15 2001/05/31 21:24:47 jongfoster Exp $"; +const char jcc_rcs[] = "$Id: jcc.c,v 1.36 2001/09/10 10:56:15 oes Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/jcc.c,v $ @@ -33,6 +33,111 @@ const char jcc_rcs[] = "$Id: jcc.c,v 1.15 2001/05/31 21:24:47 jongfoster Exp $"; * * Revisions : * $Log: jcc.c,v $ + * Revision 1.36 2001/09/10 10:56:15 oes + * Silenced compiler warnings + * + * Revision 1.35 2001/07/31 14:44:22 oes + * Deleted unused size parameter from filter_popups() + * + * Revision 1.34 2001/07/30 22:08:36 jongfoster + * Tidying up #defines: + * - All feature #defines are now of the form FEATURE_xxx + * - Permanently turned off WIN_GUI_EDIT + * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS + * + * Revision 1.33 2001/07/29 19:32:00 jongfoster + * Renaming _main() [mingw32 only] to real_main(), for ANSI compliance. + * + * Revision 1.32 2001/07/29 18:47:05 jongfoster + * Adding missing #include "loadcfg.h" + * + * Revision 1.31 2001/07/29 12:17:48 oes + * Applied pthread fix by Paul Lieverse + * + * Revision 1.30 2001/07/25 22:57:13 jongfoster + * __BEOS__ no longer overrides FEATURE_PTHREAD. + * This is because FEATURE_PTHREAD will soon be widely used, so I + * want to keep it simple. + * + * Revision 1.29 2001/07/24 12:47:06 oes + * Applied BeOS support update by Eugenia + * + * Revision 1.28 2001/07/23 13:26:12 oes + * Fixed bug in popup-killing for the first read that caused binary garbage to be sent between headers and body + * + * Revision 1.27 2001/07/19 19:09:47 haroon + * - Added code to take care of the situation where while processing the first + * server response (which includes the server header), after finding the end + * of the headers we were not looking past the end of the headers for + * content modification. I enabled it for filter_popups. + * Someone else should look to see if other similar operations should be + * done to the discarded portion of the buffer. + * + * Note 2001/07/20: No, the other content modification mechanisms will process + * the whole iob later anyway. --oes + * + * Revision 1.26 2001/07/18 12:31:36 oes + * cosmetics + * + * Revision 1.25 2001/07/15 19:43:49 jongfoster + * Supports POSIX threads. + * Also removed some unused #includes. + * + * Revision 1.24 2001/07/13 14:00:40 oes + * - Generic content modification scheme: + * Each feature has its own applicability flag that is set + * from csp->action->flags. + * Replaced the "filtering" int flag , by a function pointer + * "content_filter" to the function that will do the content + * modification. If it is != NULL, the document will be buffered + * and processed through *content_filter, which must set + * csp->content_length and return a modified copy of the body + * or return NULL (on failiure). + * - Changed csp->is_text to the more generic bitmap csp->content_type + * which can currently take the valued CT_TEXT or CT_GIF + * - Reformatting etc + * - Removed all #ifdef PCRS + * + * Revision 1.23 2001/07/02 02:28:25 iwanttokeepanon + * Added "#ifdef ACL_FILES" conditional compilation to line 1291 to exclude + * the `block_acl' call. This prevents a compilation error when the user + * does not wish to use the "ACL" feature. + * + * Revision 1.22 2001/06/29 21:45:41 oes + * Indentation, CRLF->LF, Tab-> Space + * + * Revision 1.21 2001/06/29 13:29:36 oes + * - Cleaned up, improved comments + * - Unified all possible interceptors (CGI, + * block, trust, fast_redirect) in one + * place, with one (CGI) answer generation + * mechansim. Much clearer now. + * - Removed the GIF image generation, which + * is now done in filters.c:block_url() + * - Made error conditions like domain lookup + * failiure or (various) problems while talking + * to the server use cgi.c:error_response() + * instead of generating HTML/HTTP in chat() (yuck!) + * - Removed logentry from cancelled commit + * + * Revision 1.20 2001/06/09 10:55:28 jongfoster + * Changing BUFSIZ ==> BUFFER_SIZE + * + * Revision 1.19 2001/06/07 23:12:52 jongfoster + * Replacing function pointer in struct gateway with a directly + * called function forwarded_connect(). + * Replacing struct gateway with struct forward_spec + * + * Revision 1.18 2001/06/03 19:12:16 oes + * introduced new cgi handling + * + * Revision 1.17 2001/06/01 20:07:23 jongfoster + * Now uses action +image-blocker{} rather than config->tinygif + * + * Revision 1.16 2001/06/01 18:49:17 jongfoster + * Replaced "list_share" with "list" - the tiny memory gain was not + * worth the extra complexity. + * * Revision 1.15 2001/05/31 21:24:47 jongfoster * Changed "permission" to "action" throughout. * Removed DEFAULT_USER_AGENT - it must now be specified manually. @@ -185,15 +290,15 @@ const char jcc_rcs[] = "$Id: jcc.c,v 1.15 2001/05/31 21:24:47 jongfoster Exp $"; #include #include -#ifdef _WIN32 +#ifdef FEATURE_PTHREAD +#include +#endif /* def FEATURE_PTHREAD */ -# include -# include -# include -# include -# ifdef TOGGLE -# include -# endif /* def TOGGLE */ +#ifdef _WIN32 +# ifndef FEATURE_PTHREAD +# include +# include +# endif /* ndef FEATURE_PTHREAD */ # include "win32.h" # ifndef _WIN_CONSOLE @@ -232,6 +337,8 @@ const char jcc_rcs[] = "$Id: jcc.c,v 1.15 2001/05/31 21:24:47 jongfoster Exp $"; #include "jbsockets.h" #include "gateway.h" #include "actions.h" +#include "cgi.h" +#include "loadcfg.h" const char jcc_h_rcs[] = JCC_H_VERSION; const char project_h_rcs[] = PROJECT_H_VERSION; @@ -239,10 +346,10 @@ const char project_h_rcs[] = PROJECT_H_VERSION; struct client_state clients[1]; struct file_list files[1]; -#ifdef STATISTICS +#ifdef FEATURE_STATISTICS int urls_read = 0; /* total nr of urls read inc rejected */ int urls_rejected = 0; /* total nr of urls rejected */ -#endif /* def STATISTICS */ +#endif /* def FEATURE_STATISTICS */ static void listen_loop(void); @@ -297,40 +404,45 @@ static const char VANILLA_WAFER[] = 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 "csp->toggled_on", else we don't - * And if FORCE_LOAD, then we want the if to test "csp->toggled_on", else we don't + * 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 TOGGLE +#ifdef FEATURE_TOGGLE # define IS_TOGGLED_ON_AND (csp->toggled_on) && -#else /* ifndef TOGGLE */ +#else /* ifndef FEATURE_TOGGLE */ # define IS_TOGGLED_ON_AND -#endif /* ndef TOGGLE */ -#ifdef FORCE_LOAD +#endif /* ndef FEATURE_TOGGLE */ +#ifdef FEATURE_FORCE_LOAD # define IS_NOT_FORCED_AND (!csp->force) && -#else /* ifndef TOGGLE */ +#else /* ifndef FEATURE_FORCE_LOAD */ # define IS_NOT_FORCED_AND -#endif /* def FORCE_LOAD */ +#endif /* def FEATURE_FORCE_LOAD */ -#define IS_ENABLED_AND IS_TOGGLED_ON_AND IS_NOT_FORCED_AND +#define IS_ENABLED_AND IS_TOGGLED_ON_AND IS_NOT_FORCED_AND - char buf[BUFSIZ], *hdr, *p, *req; - char *err = NULL; - char *eno; + 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 gateway *gw; + const struct forward_spec * fwd; struct http_request *http; -#ifdef KILLPOPUPS +#ifdef FEATURE_KILL_POPUPS int block_popups; /* bool, 1==will block popups */ int block_popups_now = 0; /* bool, 1==currently blocking popups */ -#endif /* def KILLPOPUPS */ -#ifdef PCRS - int pcrs_filter; /* bool, 1==will filter through pcrs */ - int filtering = 0; /* bool, 1==currently filtering through pcrs */ -#endif /* def PCRS */ +#endif /* def FEATURE_KILL_POPUPS */ + + int pcrs_filter; /* bool, 1==will filter through pcrs */ + int gif_deanimate; /* bool, 1==will deanimate gifs */ + + /* Function that does the content filtering for the current request */ + char *(*content_filter)() = NULL; + + /* Skeleton for HTTP response, if we should intercept the request */ + struct http_response *rsp; http = csp->http; @@ -359,7 +471,7 @@ static void chat(struct client_state *csp) continue; /* more to come! */ } -#ifdef FORCE_LOAD +#ifdef FEATURE_FORCE_LOAD /* If this request contains the FORCE_PREFIX, * better get rid of it now and set the force flag --oes */ @@ -374,7 +486,7 @@ static void chat(struct client_state *csp) { csp->force = 0; } -#endif /* def FORCE_LOAD */ +#endif /* def FEATURE_FORCE_LOAD */ parse_http_request(req, http, csp); freez(req); @@ -393,7 +505,7 @@ static void chat(struct client_state *csp) /* decide how to route the HTTP request */ - if ((gw = forward_url(http, csp)) == NULL) + 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 */ @@ -424,7 +536,7 @@ static void chat(struct client_state *csp) * */ - if (gw->forward_host) + if (fwd->forward_host) { /* if forwarding, just pass the request as is */ enlist(csp->headers, http->cmd); @@ -447,19 +559,19 @@ static void chat(struct client_state *csp) /* decide what we're to do with cookies */ -#ifdef TOGGLE +#ifdef FEATURE_TOGGLE if (!csp->toggled_on) { /* Most compatible set of actions (i.e. none) */ init_current_action(csp->action); } else -#endif /* ndef TOGGLE */ +#endif /* ndef FEATURE_TOGGLE */ { url_actions(http, csp); } -#ifdef JAR_FILES +#ifdef FEATURE_COOKIE_JAR /* * 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 @@ -471,16 +583,16 @@ static void chat(struct client_state *csp) { enlist(csp->action->multi[ACTION_MULTI_WAFER], VANILLA_WAFER); } -#endif /* def JAR_FILES */ +#endif /* def FEATURE_COOKIE_JAR */ -#ifdef KILLPOPUPS +#ifdef FEATURE_KILL_POPUPS block_popups = ((csp->action->flags & ACTION_NO_POPUPS) != 0); -#endif /* def KILLPOPUPS */ -#ifdef PCRS +#endif /* def FEATURE_KILL_POPUPS */ + pcrs_filter = (csp->rlist != NULL) && /* There are expressions to be used */ ((csp->action->flags & ACTION_FILTER) != 0); -#endif /* def PCRS */ + gif_deanimate = ((csp->action->flags & ACTION_DEANIMATE) != 0); /* grab the rest of the client's headers */ @@ -504,120 +616,67 @@ static void chat(struct client_state *csp) freez(p); } - /* filter it as required */ + /* We have a request. */ hdr = sed(client_patterns, add_client_headers, csp); - destroy_list(csp->headers); - /* Check the request against all rules, unless - * we're toggled off or in force mode. + /* + * Now, check to see if we need to intercept it, i.e. + * If */ - if (intercept_url(http, csp)) - { - /* - * The interceptor will write out the data. - * We don't need to do anything else - */ - -#ifdef STATISTICS - csp->rejected = 1; -#endif /* def STATISTICS */ - - freez(hdr); - return; - } - -#ifdef FAST_REDIRECTS - else if (IS_ENABLED_AND - ((csp->action->flags & ACTION_FAST_REDIRECTS) != 0) && - (p = redirect_url(http, csp))) + 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 */ + )) + ) { - /* This must be blocked as HTML */ -#ifdef STATISTICS - csp->rejected = 1; -#endif /* def STATISTICS */ - - 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); - - /* Send HTML redirection result */ - write_socket(csp->cfd, p, strlen(p)); - - freez(p); - freez(hdr); - return; - } -#endif /* def 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 (IS_ENABLED_AND ( -#ifdef TRUST_FILES - (p = trust_url(http, csp)) || -#endif /* def TRUST_FILES */ - (p = block_url(http, csp)) )) - { - /* Block as HTML or image */ -#ifdef STATISTICS +#ifdef FEATURE_STATISTICS + /* Count as a rejected request */ csp->rejected = 1; -#endif /* def STATISTICS */ +#endif /* def FEATURE_STATISTICS */ + /* 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); - log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 1", - csp->ip_addr_str, http->cmd); - -#ifdef IMAGE_BLOCKING - /* Block as image? */ - if ( (csp->config->tinygif > 0) && block_imageurl(http, csp) ) - { - /* Send "blocked" image */ - log_error(LOG_LEVEL_GPC, "%s%s image crunch!", - http->hostport, http->path); - - if (csp->config->tinygif == 1) - { - write_socket(csp->cfd, BLANKGIF, sizeof(BLANKGIF)-1); - } - else if (csp->config->tinygif == 2) - { - write_socket(csp->cfd, JBGIF, sizeof(JBGIF)-1); - } - else if ((csp->config->tinygif == 3) && (csp->config->tinygifurl)) - { - freez(p); - p = (char *)malloc(sizeof(HTTP_REDIRECT_TEMPLATE) - + strlen(csp->config->tinygifurl)); - sprintf(p, HTTP_REDIRECT_TEMPLATE, csp->config->tinygifurl); - write_socket(csp->cfd, p, strlen(p)); - } - else - { - /* Should never happen */ - write_socket(csp->cfd, JBGIF, sizeof(JBGIF)-1); - } - } - else -#endif /* def IMAGE_BLOCKING */ - /* Block as HTML */ - { - /* Send HTML "blocked" message, interception, or redirection result */ - write_socket(csp->cfd, p, strlen(p)); - } - - freez(p); + /* Clean up and return */ + free_http_response(rsp); freez(hdr); return; } log_error(LOG_LEVEL_GPC, "%s%s", http->hostport, http->path); - if (gw->forward_host) + if (fwd->forward_host) { log_error(LOG_LEVEL_CONNECT, "via %s:%d to: %s", - gw->forward_host, gw->forward_port, http->hostport); + fwd->forward_host, fwd->forward_port, http->hostport); } else { @@ -626,7 +685,7 @@ static void chat(struct client_state *csp) /* here we connect to the server, gateway, or the forwarder */ - csp->sfd = (gw->conn)(gw, http, csp); + csp->sfd = forwarded_connect(fwd, http, csp); if (csp->sfd < 0) { @@ -635,32 +694,37 @@ static void chat(struct client_state *csp) if (errno == EINVAL) { - err = zalloc(strlen(CNXDOM) + strlen(http->host)); - sprintf(err, CNXDOM, http->host); + rsp = error_response(csp, "no-such-domain", errno); log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 404 0", csp->ip_addr_str, http->cmd); } else { - eno = safe_strerror(errno); - err = zalloc(strlen(CFAIL) + strlen(http->hostport) + strlen(eno)); - sprintf(err, CFAIL, http->hostport, eno); + rsp = error_response(csp, "connect-failed", errno); log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0", csp->ip_addr_str, http->cmd); } - write_socket(csp->cfd, err, strlen(err)); + /* 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); + } + } - freez(err); + free_http_response(rsp); freez(hdr); return; } log_error(LOG_LEVEL_CONNECT, "OK"); - if (gw->forward_host || (http->ssl == 0)) + 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) @@ -674,15 +738,21 @@ static void chat(struct client_state *csp) log_error(LOG_LEVEL_CONNECT, "write header to: %s failed: %E", http->hostport); - eno = safe_strerror(errno); - err = zalloc(strlen(CFAIL) + strlen(http->hostport) + strlen(eno)); - sprintf(err, CFAIL, http->hostport, eno); - write_socket(csp->cfd, err, strlen(err)); - log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0", csp->ip_addr_str, http->cmd); - freez(err); + rsp = error_response(csp, "connect-failed", errno); + + 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); + } + } + + free_http_response(rsp); freez(hdr); return; } @@ -755,7 +825,7 @@ static void chat(struct client_state *csp) /* * 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'? + * FIXME: Does `hdr' really mean `host'? No. */ @@ -768,14 +838,21 @@ static void chat(struct client_state *csp) { log_error(LOG_LEVEL_ERROR, "read from: %s failed: %E", http->host); - eno = safe_strerror(errno); - sprintf(buf, CFAIL, http->hostport, eno); - freez(eno); - log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0", csp->ip_addr_str, http->cmd); - write_socket(csp->cfd, buf, strlen(buf)); + rsp = error_response(csp, "connect-failed", errno); + + 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; } @@ -784,13 +861,13 @@ static void chat(struct client_state *csp) */ buf[n] = '\0'; -#ifdef KILLPOPUPS +#ifdef FEATURE_KILL_POPUPS /* Filter the popups on this read. */ if (block_popups_now) { - filter_popups(buf, n); + filter_popups(buf); } -#endif /* def KILLPOPUPS */ +#endif /* def FEATURE_KILL_POPUPS */ /* Normally, this would indicate that we've read * as much as the server has sent us and we can @@ -812,29 +889,47 @@ static void chat(struct client_state *csp) */ if (n == 0) { - /* This hack must only be enforced for headers. */ + if (server_body || http->ssl) { -#ifdef PCRS - if (filtering) + /* + * 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) { - p = re_process_buffer(csp); + /* + * 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; + } + hdr = sed(server_patterns, add_server_headers, csp); n = strlen(hdr); + if ((write_socket(csp->cfd, hdr, n) != n) - || (write_socket(csp->cfd, p, csp->content_length) != csp->content_length)) + || (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; } - freez(hdr); - freez(p); + + freez(hdr); + freez(p); } -#endif /* def PCRS */ + break; /* "game over, man" */ } - /* Let's pretend the server just sent us a blank line. */ + /* + * This is NOT the body, so + * Let's pretend the server just sent us a blank line. + */ n = sprintf(buf, "\r\n"); /* @@ -847,20 +942,18 @@ static void chat(struct client_state *csp) /* * If this is an SSL connection or we're in the body - * of the server document, just write it to the client. + * 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) { -#ifdef PCRS - if (filtering) + if (content_filter) { - add_to_iob(csp, buf, n); /* Buffer the body for filtering */ + add_to_iob(csp, buf, n); } else -#endif /* def PCRS */ { - /* just write */ if (write_socket(csp->cfd, buf, n) != n) { log_error(LOG_LEVEL_ERROR, "write to client failed: %E"); @@ -934,39 +1027,46 @@ static void chat(struct client_state *csp) * may be in the buffer) */ -#ifdef KILLPOPUPS +#ifdef FEATURE_KILL_POPUPS /* Start blocking popups if appropriate. */ - if (csp->is_text && /* It's a text / * MIME-Type */ - !http->ssl && /* We talk plaintext */ - block_popups) /* Policy allows */ + 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); } -#endif /* def KILLPOPUPS */ +#endif /* def FEATURE_KILL_POPUPS */ -#ifdef PCRS - /* Start re_filtering this if appropriate. */ + /* Buffer and pcrs filter this if appropriate. */ - if (csp->is_text && /* It's a text / * MIME-Type */ - !http->ssl && /* We talk plaintext */ - pcrs_filter) /* Policy allows */ + if ((csp->content_type & CT_TEXT) && /* It's a text / * MIME-Type */ + !http->ssl && /* We talk plaintext */ + pcrs_filter) /* Policy allows */ { - filtering = 1; + content_filter = pcrs_filter_response; } -/* This next line is a little ugly, but it simplifies the if statement below. */ -/* Basically if using PCRS, we want the OR condition to require "!filtering" */ -#define NOT_FILTERING_AND !filtering && + /* Buffer and gif_deanimate this if appropriate. */ -#else /* not def PCRS */ - -#define NOT_FILTERING_AND + 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; + } -#endif /* def PCRS */ - if (NOT_FILTERING_AND ((write_socket(csp->cfd, hdr, n) != n) + /* + * 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))) { log_error(LOG_LEVEL_CONNECT, "write header to client failed: %E"); @@ -979,7 +1079,7 @@ static void chat(struct client_state *csp) return; } - NOT_FILTERING_AND (byte_count += n); + if(!content_filter) byte_count += n; /* we're finished with the server's header */ @@ -1040,7 +1140,6 @@ static void serve(struct client_state *csp) #ifdef __BEOS__ - /********************************************************************* * * Function : server_thread @@ -1059,7 +1158,6 @@ static int32 server_thread(void *data) return 0; } - #endif @@ -1087,7 +1185,7 @@ static int32 server_thread(void *data) * *********************************************************************/ #ifdef __MINGW32__ -int _main(int argc, const char *argv[]) +int real_main(int argc, const char *argv[]) #else int main(int argc, const char *argv[]) #endif @@ -1200,12 +1298,12 @@ static void listen_loop(void) while (FOREVER) { -#if !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) +#if !defined(FEATURE_PTHREAD) && !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) while (waitpid(-1, NULL, WNOHANG) > 0) { /* zombie children */ } -#endif /* !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) */ +#endif /* !defined(FEATURE_PTHREAD) && !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) */ sweep(); if ( NULL == (csp = (struct client_state *) zalloc(sizeof(*csp))) ) @@ -1277,10 +1375,10 @@ static void listen_loop(void) log_error(LOG_LEVEL_CONNECT, "OK"); } -#if defined(TOGGLE) +#ifdef FEATURE_TOGGLE /* by haroon - most of credit to srt19170 */ csp->toggled_on = g_bToggleIJB; -#endif +#endif /* def FEATURE_TOGGLE */ if (run_loader(csp)) { @@ -1288,6 +1386,7 @@ static void listen_loop(void) /* Never get here - LOG_LEVEL_FATAL causes program exit */ } +#ifdef FEATURE_ACL if (block_acl(NULL,csp)) { log_error(LOG_LEVEL_CONNECT, "Connection dropped due to ACL"); @@ -1295,6 +1394,7 @@ static void listen_loop(void) freez(csp); continue; } +#endif /* def FEATURE_ACL */ /* add it to the list of clients */ csp->next = clients->next; @@ -1307,6 +1407,21 @@ static void listen_loop(void) /* this is a switch () statment in the C preprocessor - ugh */ #undef SELECTED_ONE_OPTION +/* Use Pthreads in preference to native code */ +#if defined(FEATURE_PTHREAD) && !defined(SELECTED_ONE_OPTION) +#define SELECTED_ONE_OPTION + { + pthread_t the_thread; + pthread_attr_t attrs; + + pthread_attr_init(&attrs); + pthread_attr_setdetachstate(&attrs, PTHREAD_CREATE_DETACHED); + child_id = (pthread_create(&the_thread, &attrs, + (void*)serve, csp) ? -1 : 0); + pthread_attr_destroy(&attrs); + } +#endif + #if defined(_WIN32) && !defined(_CYGWIN) && !defined(SELECTED_ONE_OPTION) #define SELECTED_ONE_OPTION child_id = _beginthread( @@ -1352,27 +1467,7 @@ static void listen_loop(void) #if !defined(SELECTED_ONE_OPTION) child_id = fork(); -#endif - -#undef SELECTED_ONE_OPTION -/* end of cpp switch () */ - - if (child_id < 0) /* failed */ - { - char buf[BUFSIZ]; - - log_error(LOG_LEVEL_ERROR, "can't fork: %E"); - - sprintf(buf , "JunkBuster: can't fork: errno = %d", errno); - - write_socket(csp->cfd, buf, strlen(buf)); - close_socket(csp->cfd); - csp->active = 0; - sleep(5); - continue; - } -#if !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) /* This block is only needed when using fork(). * When using threads, the server thread was * created and run by the call to _beginthread(). @@ -1383,7 +1478,7 @@ static void listen_loop(void) _exit(0); } - else /* parent */ + else if (child_id > 0) /* parent */ { /* in a fork()'d environment, the parent's * copy of the client socket and the CSP @@ -1396,7 +1491,25 @@ static void listen_loop(void) close_socket(csp->cfd); csp->active = 0; } -#endif /* !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) */ +#endif + +#undef SELECTED_ONE_OPTION +/* end of cpp switch () */ + + if (child_id < 0) /* failed */ + { + char buf[BUFFER_SIZE]; + + log_error(LOG_LEVEL_ERROR, "can't fork: %E"); + + sprintf(buf , "JunkBuster: can't fork: errno = %d", errno); + + write_socket(csp->cfd, buf, strlen(buf)); + close_socket(csp->cfd); + csp->active = 0; + sleep(5); + continue; + } } else {