X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=jcc.c;h=9ff723b20dfafb73e7503e66db60cd72d920e5c1;hp=0970e0beb71255b7a1d77b9a9db2a336562b1a84;hb=5511418f4b6874b99a6b3d57e46aea61c507bd9e;hpb=8e22cb9cdedac101a56a2f4e724aef21ef1a1cc4 diff --git a/jcc.c b/jcc.c index 0970e0be..9ff723b2 100644 --- a/jcc.c +++ b/jcc.c @@ -1,4 +1,4 @@ -const char jcc_rcs[] = "$Id: jcc.c,v 1.9 2001/05/26 00:28:36 jongfoster Exp $"; +const char jcc_rcs[] = "$Id: jcc.c,v 1.22 2001/06/29 21:45:41 oes Exp $"; /********************************************************************* * * File : $Source: /cvsroot/ijbswa/current/jcc.c,v $ @@ -33,6 +33,95 @@ const char jcc_rcs[] = "$Id: jcc.c,v 1.9 2001/05/26 00:28:36 jongfoster Exp $"; * * Revisions : * $Log: jcc.c,v $ + * 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. + * Moved vanilla wafer check into chat(), since we must now + * decide whether or not to add it based on the URL. + * + * Revision 1.14 2001/05/29 20:14:01 joergs + * AmigaOS bugfix: PCRS needs a lot of stack, stacksize for child threads + * increased. + * + * Revision 1.13 2001/05/29 09:50:24 jongfoster + * Unified blocklist/imagelist/permissionslist. + * File format is still under discussion, but the internal changes + * are (mostly) done. + * + * Also modified interceptor behaviour: + * - We now intercept all URLs beginning with one of the following + * prefixes (and *only* these prefixes): + * * http://i.j.b/ + * * http://ijbswa.sf.net/config/ + * * http://ijbswa.sourceforge.net/config/ + * - New interceptors "home page" - go to http://i.j.b/ to see it. + * - Internal changes so that intercepted and fast redirect pages + * are not replaced with an image. + * - Interceptors now have the option to send a binary page direct + * to the client. (i.e. ijb-send-banner uses this) + * - Implemented show-url-info interceptor. (Which is why I needed + * the above interceptors changes - a typical URL is + * "http://i.j.b/show-url-info?url=www.somesite.com/banner.gif". + * The previous mechanism would not have intercepted that, and + * if it had been intercepted then it then it would have replaced + * it with an image.) + * + * 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). @@ -166,6 +255,7 @@ const char jcc_rcs[] = "$Id: jcc.c,v 1.9 2001/05/26 00:28:36 jongfoster Exp $"; #endif #include "project.h" +#include "list.h" #include "jcc.h" #include "filters.h" #include "loaders.h" @@ -176,12 +266,12 @@ const char jcc_rcs[] = "$Id: jcc.c,v 1.9 2001/05/26 00:28:36 jongfoster Exp $"; #include "errlog.h" #include "jbsockets.h" #include "gateway.h" +#include "actions.h" +#include "cgi.h" const char jcc_h_rcs[] = JCC_H_VERSION; const char project_h_rcs[] = PROJECT_H_VERSION; -const char DEFAULT_USER_AGENT[] ="User-Agent: Mozilla (X11; I; Linux 2.0.32 i586)"; - struct client_state clients[1]; struct file_list files[1]; @@ -208,6 +298,17 @@ static int32 server_thread(void *data); #endif +/* The vanilla wafer. */ +static const char VANILLA_WAFER[] = + "NOTICE=TO_WHOM_IT_MAY_CONCERN_" + "Do_not_send_me_any_copyrighted_information_other_than_the_" + "document_that_I_am_requesting_or_any_of_its_necessary_components._" + "In_particular_do_not_send_me_any_cookies_that_" + "are_subject_to_a_claim_of_copyright_by_anybody._" + "Take_notice_that_I_refuse_to_be_bound_by_any_license_condition_" + "(copyright_or_otherwise)_applying_to_any_cookie._"; + + /********************************************************************* * * Function : chat @@ -231,28 +332,32 @@ 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 FORCE_LOAD */ +# 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 buf[BUFFER_SIZE]; + char *hdr, *p, *req; char *err = NULL; - char *eno; fd_set rfds; - int n, maxfd, server_body, ms_iis5_hack = 0; - const struct gateway *gw; + int n, maxfd, server_body; + int ms_iis5_hack = 0; + int byte_count = 0; + const struct forward_spec * fwd; struct http_request *http; #ifdef KILLPOPUPS int block_popups; /* bool, 1==will block popups */ @@ -262,6 +367,7 @@ static void chat(struct client_state *csp) int pcrs_filter; /* bool, 1==will filter through pcrs */ int filtering = 0; /* bool, 1==currently filtering through pcrs */ #endif /* def PCRS */ + struct http_response *rsp; http = csp->http; @@ -316,12 +422,15 @@ 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; } /* 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 */ @@ -352,7 +461,7 @@ 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); @@ -378,23 +487,35 @@ static void chat(struct client_state *csp) #ifdef TOGGLE if (!csp->toggled_on) { - /* Most compatible set of permissions */ - csp->permissions = PERMIT_COOKIE_SET | PERMIT_COOKIE_READ | PERMIT_POPUPS; + /* Most compatible set of actions (i.e. none) */ + init_current_action(csp->action); } else +#endif /* ndef TOGGLE */ { - csp->permissions = url_permissions(http, csp); + url_actions(http, csp); } -#else /* ifndef TOGGLE */ - csp->permissions = url_permissions(http, csp); -#endif /* ndef TOGGLE */ + +#ifdef JAR_FILES + /* + * 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. + */ + 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 JAR_FILES */ #ifdef KILLPOPUPS - block_popups = ((csp->permissions & PERMIT_POPUPS) == 0); + block_popups = ((csp->action->flags & ACTION_NO_POPUPS) != 0); #endif /* def KILLPOPUPS */ #ifdef PCRS pcrs_filter = (csp->rlist != NULL) && /* There are expressions to be used */ - ((csp->permissions & PERMIT_RE_FILTER) != 0); + ((csp->action->flags & ACTION_FILTER) != 0); #endif /* def PCRS */ @@ -420,84 +541,67 @@ 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 (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 ( + /* 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 TRUST_FILES + || ( NULL != (rsp = trust_url(csp))) +#endif + + /* ..or a fast redirect kicked in */ #ifdef FAST_REDIRECTS - || (csp->config->fast_redirects && (p = redirect_url(http, csp))) + || (((csp->action->flags & ACTION_FAST_REDIRECTS) != 0) && + (NULL != (rsp = redirect_url(csp)))) #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); + } + #ifdef STATISTICS + /* Count as a rejected request */ csp->rejected = 1; #endif /* def 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); -#if defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) - /* 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 == 2) || strstr(http->path, "ijb-send-banner")) - { - write_socket(csp->cfd, JBGIF, sizeof(JBGIF)-1); - } - else if (csp->config->tinygif == 1) - { - write_socket(csp->cfd, BLANKGIF, sizeof(BLANKGIF)-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 - { - write_socket(csp->cfd, JBGIF, sizeof(JBGIF)-1); - } - } - else -#endif /* defined(DETECT_MSIE_IMAGES) || defined(USE_IMAGE_LIST) */ - /* 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); + /* 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 { @@ -506,7 +610,7 @@ 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) { @@ -515,28 +619,37 @@ 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); - write_socket(csp->cfd, err, strlen(err)); + log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0", + csp->ip_addr_str, http->cmd); + } - log_error(LOG_LEVEL_LOG, 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) @@ -550,12 +663,21 @@ 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); + + rsp = error_response(csp, "connect-failed", errno); - freez(err); + 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; } @@ -567,6 +689,9 @@ 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); @@ -609,7 +734,10 @@ 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) { @@ -635,10 +763,21 @@ 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); - write_socket(csp->cfd, buf, strlen(buf)); + log_error(LOG_LEVEL_CLF, "%s - - [%T] \"%s\" 503 0", + csp->ip_addr_str, http->cmd); + + 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; } @@ -681,7 +820,17 @@ 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" */ @@ -720,6 +869,7 @@ static void chat(struct client_state *csp) return; } } + byte_count += n; continue; } else @@ -791,7 +941,7 @@ 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; } @@ -818,9 +968,8 @@ 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"); @@ -832,6 +981,8 @@ static void chat(struct client_state *csp) return; } + NOT_FILTERING_AND (byte_count += n); + /* we're finished with the server's header */ freez(hdr); @@ -853,7 +1004,8 @@ 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); } @@ -890,7 +1042,6 @@ static void serve(struct client_state *csp) #ifdef __BEOS__ - /********************************************************************* * * Function : server_thread @@ -909,7 +1060,6 @@ static int32 server_thread(void *data) return 0; } - #endif @@ -944,7 +1094,7 @@ int main(int argc, const char *argv[]) { configfile = #ifdef AMIGA - "AmiTCP:db/junkbuster.config" + "AmiTCP:db/junkbuster/config" #elif !defined(_WIN32) "config" #else @@ -969,10 +1119,6 @@ int main(int argc, const char *argv[]) } #endif /* !defined(_WIN32) || defined(_WIN_CONSOLE) */ -#ifdef AMIGA - InitAmiga(); -#endif - Argc = argc; Argv = argv; @@ -983,7 +1129,9 @@ int main(int argc, const char *argv[]) files->next = NULL; -#ifdef _WIN32 +#ifdef AMIGA + InitAmiga(); +#elif defined(_WIN32) InitWin32(); #endif @@ -1060,9 +1208,9 @@ 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; } @@ -1120,14 +1268,14 @@ static void listen_loop(void) { exit(1); } -#endif +#endif freez(csp); continue; } else { log_error(LOG_LEVEL_CONNECT, "OK"); - } + } #if defined(TOGGLE) /* by haroon - most of credit to srt19170 */ @@ -1139,19 +1287,21 @@ static void listen_loop(void) log_error(LOG_LEVEL_FATAL, "a loader failed - must exit"); /* Never get here - LOG_LEVEL_FATAL causes program exit */ } - - 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; - + +#ifdef ACL_FILES + if (block_acl(NULL,csp)) + { + log_error(LOG_LEVEL_CONNECT, "Connection dropped due to ACL"); + close_socket(csp->cfd); + freez(csp); + continue; + } +#endif /* def ACL_FILES */ + + /* add it to the list of clients */ + csp->next = clients->next; + clients->next = csp; + if (config->multi_threaded) { int child_id; @@ -1192,7 +1342,7 @@ static void listen_loop(void) NP_Output, Output(), NP_CloseOutput, FALSE, NP_Name, (ULONG)"junkbuster child", - NP_StackSize, 20*1024, + NP_StackSize, 200*1024, TAG_DONE))) { childs++; @@ -1211,7 +1361,7 @@ static void listen_loop(void) if (child_id < 0) /* failed */ { - char buf[BUFSIZ]; + char buf[BUFFER_SIZE]; log_error(LOG_LEVEL_ERROR, "can't fork: %E");