X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=jcc.c;h=0ee0e157ce46056fe69779509813020e016c0bfe;hp=1376c34e8c43402be0f05eda8b5de58c776f96ce;hb=52b6b7992d4e47858963f871667e9842210fbd9e;hpb=817f8ec235017b941eda0c205971ce0d4c907cea;ds=sidebyside diff --git a/jcc.c b/jcc.c index 1376c34e..0ee0e157 100644 --- a/jcc.c +++ b/jcc.c @@ -1,4 +1,4 @@ -const char jcc_rcs[] = "$Id: jcc.c,v 1.7 2001/05/25 22:34:30 jongfoster Exp $"; +const char jcc_rcs[] = "$Id: jcc.c,v 1.12 2001/05/27 22:17:04 oes Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/jcc.c,v $ @@ -33,6 +33,37 @@ const char jcc_rcs[] = "$Id: jcc.c,v 1.7 2001/05/25 22:34:30 jongfoster Exp $"; * * Revisions : * $Log: jcc.c,v $ + * Revision 1.12 2001/05/27 22:17:04 oes + * + * - re_process_buffer no longer writes the modified buffer + * to the client, which was very ugly. It now returns the + * buffer, which it is then written by chat. + * + * - content_length now adjusts the Content-Length: header + * for modified documents rather than crunch()ing it. + * (Length info in csp->content_length, which is 0 for + * unmodified documents) + * + * - For this to work, sed() is called twice when filtering. + * + * Revision 1.11 2001/05/26 17:27:53 jongfoster + * Added support for CLF and fixed LOG_LEVEL_LOG. + * Also did CRLF->LF fix of my previous patch. + * + * Revision 1.10 2001/05/26 15:26:15 jongfoster + * ACL feature now provides more security by immediately dropping + * connections from untrusted hosts. + * + * Revision 1.9 2001/05/26 00:28:36 jongfoster + * Automatic reloading of config file. + * Removed obsolete SIGHUP support (Unix) and Reload menu option (Win32). + * Most of the global variables have been moved to a new + * struct configuration_spec, accessed through csp->config->globalname + * Most of the globals remaining are used by the Win32 GUI. + * + * Revision 1.8 2001/05/25 22:43:18 jongfoster + * Fixing minor memory leak and buffer overflow. + * * Revision 1.7 2001/05/25 22:34:30 jongfoster * Hard tabs->Spaces * @@ -221,27 +252,31 @@ static int32 server_thread(void *data); *********************************************************************/ 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 */ +/* + * 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 + */ #ifdef TOGGLE -# define IS_TOGGLED_ON csp->toggled_on && +# define IS_TOGGLED_ON_AND (csp->toggled_on) && #else /* ifndef TOGGLE */ -# define IS_TOGGLED_ON +# define IS_TOGGLED_ON_AND #endif /* ndef TOGGLE */ +#ifdef FORCE_LOAD +# define IS_NOT_FORCED_AND (!csp->force) && +#else /* ifndef TOGGLE */ +# define IS_NOT_FORCED_AND +#endif /* def FORCE_LOAD */ -/* 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 */ +#define IS_ENABLED_AND IS_TOGGLED_ON_AND IS_NOT_FORCED_AND char buf[BUFSIZ], *hdr, *p, *req; char *err = NULL; char *eno; fd_set rfds; - int n, maxfd, server_body, ms_iis5_hack = 0; + int n, maxfd, server_body; + int ms_iis5_hack = 0; + int byte_count = 0; const struct gateway *gw; struct http_request *http; #ifdef KILLPOPUPS @@ -306,6 +341,9 @@ static void chat(struct client_state *csp) { strcpy(buf, CHEADER); write_socket(csp->cfd, buf, strlen(buf)); + + log_error(LOG_LEVEL_CLF, "%s - - [%T] \" \" 400 0", csp->ip_addr_str); + return; } @@ -369,15 +407,13 @@ static void chat(struct client_state *csp) if (!csp->toggled_on) { /* Most compatible set of permissions */ - csp->permissions = PERMIT_COOKIE_SET | PERMIT_COOKIE_READ | PERMIT_POPUPS; + csp->permissions = PERMIT_MOST_COMPATIBLE; } else +#endif /* ndef TOGGLE */ { 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); @@ -420,62 +456,99 @@ static void chat(struct client_state *csp) * we're toggled off or in force mode. */ - if (IS_TOGGLED_ON -#ifdef FORCE_LOAD - (!csp->force) && -#endif /* def FORCE_LOAD */ - ( (p = intercept_url(http, csp)) || - IS_TRUSTED_URL - (p = block_url(http, csp)) + 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 - || (fast_redirects && (p = redirect_url(http, csp))) + else if (IS_ENABLED_AND + ((csp->permissions & PERMIT_FAST_REDIRECTS) != 0) && + (p = redirect_url(http, csp))) + { + /* 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 */ - )) + + 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 csp->rejected = 1; #endif /* def STATISTICS */ log_error(LOG_LEVEL_GPC, "%s%s crunch!", http->hostport, http->path); -#if defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) + log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 1", + csp->ip_addr_str, http->cmd); + +#ifdef IMAGE_BLOCKING /* Block as image? */ - if ( (tinygif > 0) && block_imageurl(http, csp) ) + 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 ((tinygif == 2) || strstr(http->path, "ijb-send-banner")) + if (csp->config->tinygif == 1) { - write_socket(csp->cfd, JBGIF, sizeof(JBGIF)-1); + write_socket(csp->cfd, BLANKGIF, sizeof(BLANKGIF)-1); } - else if (tinygif == 1) + else if (csp->config->tinygif == 2) { - write_socket(csp->cfd, BLANKGIF, sizeof(BLANKGIF)-1); + write_socket(csp->cfd, JBGIF, sizeof(JBGIF)-1); } - else if ((tinygif == 3) && (tinygifurl)) + else if ((csp->config->tinygif == 3) && (csp->config->tinygifurl)) { freez(p); - p = (char *)malloc(sizeof(HTTP_REDIRECT_TEMPLATE) + strlen(tinygifurl)); - sprintf(p, HTTP_REDIRECT_TEMPLATE, tinygifurl); + 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 /* defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) */ +#endif /* def IMAGE_BLOCKING */ /* Block as HTML */ { /* Send HTML "blocked" message, interception, or redirection result */ write_socket(csp->cfd, p, strlen(p)); } - log_error(LOG_LEVEL_LOG, "%s", p); - freez(p); freez(hdr); return; @@ -506,18 +579,22 @@ static void chat(struct client_state *csp) { err = zalloc(strlen(CNXDOM) + strlen(http->host)); sprintf(err, CNXDOM, http->host); + + 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); + + log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0", + csp->ip_addr_str, http->cmd); } write_socket(csp->cfd, err, strlen(err)); - log_error(LOG_LEVEL_LOG, err); - freez(err); freez(hdr); return; @@ -544,6 +621,9 @@ static void chat(struct client_state *csp) 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); freez(hdr); return; @@ -556,6 +636,9 @@ static void chat(struct client_state *csp) * so just send the "connect succeeded" message to the * client, flush the rest, and get out of the way. */ + log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 2\n", + csp->ip_addr_str, http->cmd); + if (write_socket(csp->cfd, CSUCCEED, sizeof(CSUCCEED)-1) < 0) { freez(hdr); @@ -598,7 +681,10 @@ static void chat(struct client_state *csp) { n = read_socket(csp->cfd, buf, sizeof(buf)); - if (n <= 0) break; /* "game over, man" */ + if (n <= 0) + { + break; /* "game over, man" */ + } if (write_socket(csp->sfd, buf, n) != n) { @@ -627,6 +713,10 @@ static void chat(struct client_state *csp) 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)); return; } @@ -670,7 +760,17 @@ static void chat(struct client_state *csp) #ifdef PCRS if (filtering) { - re_process_buffer(csp); + p = re_process_buffer(csp); + 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)) + { + log_error(LOG_LEVEL_CONNECT, "write modified content to client failed: %E"); + return; + } + freez(hdr); + freez(p); } #endif /* def PCRS */ break; /* "game over, man" */ @@ -709,6 +809,7 @@ static void chat(struct client_state *csp) return; } } + byte_count += n; continue; } else @@ -780,7 +881,7 @@ static void chat(struct client_state *csp) if (csp->is_text && /* It's a text / * MIME-Type */ !http->ssl && /* We talk plaintext */ - block_popups) + block_popups) /* Policy allows */ { block_popups_now = 1; } @@ -807,9 +908,8 @@ static void chat(struct client_state *csp) #endif /* def PCRS */ - - if ((write_socket(csp->cfd, hdr, n) != n) - || (NOT_FILTERING_AND (flush_socket(csp->cfd, csp) < 0))) + if (NOT_FILTERING_AND ((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"); @@ -821,6 +921,8 @@ static void chat(struct client_state *csp) return; } + NOT_FILTERING_AND (byte_count += n); + /* we're finished with the server's header */ freez(hdr); @@ -842,7 +944,8 @@ static void chat(struct client_state *csp) return; /* huh? we should never get here */ } - + log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 200 %d", + csp->ip_addr_str, http->cmd, byte_count); } @@ -970,22 +1073,8 @@ int main(int argc, const char *argv[]) configfile = argv[1]; } - remove_all_loaders(); - memset( proxy_args, 0, sizeof( proxy_args ) ); files->next = NULL; - load_config( 0 ); - - /* - * Since load_config acts as a signal handler too, it returns - * its status in configret. Check it for an error in loading. - */ - if ( 0 != configret ) - { - /* load config failed! Exit with error. */ - return( 1 ); - } - #ifdef _WIN32 InitWin32(); #endif @@ -994,7 +1083,6 @@ int main(int argc, const char *argv[]) #ifndef _WIN32 signal(SIGPIPE, SIG_IGN); signal(SIGCHLD, SIG_IGN); - signal(SIGHUP, load_config); #else /* ifdef _WIN32 */ # ifdef _WIN_CONSOLE @@ -1030,24 +1118,29 @@ static void listen_loop(void) { struct client_state *csp = NULL; int bfd; + struct configuration_spec * config; + + config = load_config(); log_error(LOG_LEVEL_CONNECT, "bind (%s, %d)", - haddr ? haddr : "INADDR_ANY", hport); + config->haddr ? config->haddr : "INADDR_ANY", config->hport); - bfd = bind_port(haddr, hport); - config_changed = 0; + 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 != haddr) ? haddr : "INADDR_ANY", hport, hport + (NULL != config->haddr) ? config->haddr : "INADDR_ANY", + config->hport, config->hport ); /* shouldn't get here */ return; } + config->need_bind = 0; + while (FOREVER) { @@ -1059,9 +1152,9 @@ static void listen_loop(void) #endif /* !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) */ sweep(); - if ( NULL == (csp = (struct client_state *) malloc(sizeof(*csp))) ) + if ( NULL == (csp = (struct client_state *) zalloc(sizeof(*csp))) ) { - log_error(LOG_LEVEL_ERROR, "malloc(%d) for csp failed: %E", sizeof(*csp)); + log_error(LOG_LEVEL_FATAL, "malloc(%d) for csp failed: %E", sizeof(*csp)); continue; } @@ -1070,7 +1163,9 @@ static void listen_loop(void) csp->active = 1; csp->sfd = -1; - if ( config_changed ) + csp->config = config = load_config(); + + if ( config->need_bind ) { /* * Since we were listening to the "old port", we will not see @@ -1084,13 +1179,26 @@ static void listen_loop(void) * request. This should not be a so common of an operation * that this will hurt people's feelings. */ + close_socket(bfd); log_error(LOG_LEVEL_CONNECT, "bind (%s, %d)", - haddr ? haddr : "INADDR_ANY", hport); - bfd = bind_port(haddr, hport); + 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_changed = 0; + config->need_bind = 0; } log_error(LOG_LEVEL_CONNECT, "accept connection ... "); @@ -1105,6 +1213,7 @@ static void listen_loop(void) exit(1); } #endif + freez(csp); continue; } else @@ -1117,17 +1226,25 @@ static void listen_loop(void) csp->toggled_on = g_bToggleIJB; #endif - /* add it to the list of clients */ - csp->next = clients->next; - clients->next = csp; - if (run_loader(csp)) { log_error(LOG_LEVEL_FATAL, "a loader failed - must exit"); /* Never get here - LOG_LEVEL_FATAL causes program exit */ } - if (multi_threaded) + if (block_acl(NULL,csp)) + { + log_error(LOG_LEVEL_CONNECT, "Connection dropped due to ACL"); + close_socket(csp->cfd); + freez(csp); + continue; + } + + /* add it to the list of clients */ + csp->next = clients->next; + clients->next = csp; + + if (config->multi_threaded) { int child_id;