--- parser3/src/targets/cgi/parser3.C	2001/03/13 17:22:13	1.1
+++ parser3/src/targets/cgi/parser3.C	2007/08/17 08:16:11	1.243
@@ -1,14 +1,776 @@
-/*
-	Parser
-	Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
-	Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
+/** @file
+	Parser: scripting and CGI main.
+
+	Copyright(c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
+	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
+*/
+
+static const char * const IDENT_PARSER3_C="$Date: 2007/08/17 08:16:11 $";
+
+#include "pa_config_includes.h"
+
+#if _MSC_VER
+#	include <crtdbg.h>
+#endif
+
+#include "pa_sapi.h"
+#include "classes.h"
+#include "pa_common.h"
+#include "pa_request.h"
+#include "pa_socks.h"
+#include "pa_version.h"
+
+#ifdef WIN32
+#	include <windows.h>
+#	include "getopt.h"
+#else
+#	include <getopt.h>
+#endif
+
+// defines
+
+// comment remove me after debugging
+//#define PA_DEBUG_CGI_ENTRY_EXIT	"c:\\parser\\debug-parser3.log"
+
+#if _MSC_VER && !defined(_DEBUG)
+#	define PA_SUPPRESS_SYSTEM_EXCEPTION
+#endif
+
+//#define DEBUG_MAILRECEIVE "mailreceive.eml"
+
+// consts
+
+#define REDIRECT_PREFIX "REDIRECT_"
+#define PARSER_CONFIG_ENV_NAME "CGI_PARSER_CONFIG"
+#define PARSER_LOG_ENV_NAME "CGI_PARSER_LOG"
+
+/// IIS refuses to read bigger chunks
+const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M 
+
+static const char* argv0;
+static const char* config_filespec_cstr=0;
+static bool fail_on_config_read_problem=true;
+
+static bool cgi; ///< we were started as CGI?
+static bool mail_received=false; ///< we were started with -m option? [asked to parse incoming message to $mail:received]
+
+// for signal handlers
+Request *request=0;
+Request_info *request_info=0;
+bool execution_canceled=false;
+
+// SAPI
+
+class SAPI_Info{} SAPI_info;
+
+static void log(const char* fmt, va_list args) {
+	bool opened=false;
+	FILE *f=0;
+
+	const char* log_by_env=getenv(PARSER_LOG_ENV_NAME);
+	if(!log_by_env)
+		log_by_env=getenv(REDIRECT_PREFIX PARSER_LOG_ENV_NAME);
+	if(log_by_env) {
+		f=fopen(log_by_env, "at");
+		opened=f!=0;
+	}
+#ifdef PA_DEBUG_CGI_ENTRY_EXIT	
+	f=fopen(PA_DEBUG_CGI_ENTRY_EXIT, "at");
+	opened=f!=0;
+#endif
+
+	if(!opened && config_filespec_cstr) {
+		char beside_config_path[MAX_STRING];
+		strncpy(beside_config_path, config_filespec_cstr, MAX_STRING-1);  beside_config_path[MAX_STRING-1]=0;
+		if(!(
+			rsplit(beside_config_path, '/') || 
+			rsplit(beside_config_path, '\\'))) { // strip filename
+			// no path, just filename
+			beside_config_path[0]='.'; beside_config_path[1]=0;
+		}
+
+		char file_spec[MAX_STRING];
+		snprintf(file_spec, MAX_STRING, 
+			"%s/parser3.log", beside_config_path);
+		f=fopen(file_spec, "at");
+		opened=f!=0;
+	}
+	// fallback to stderr
+	if(!opened)
+		f=stderr;
+
+	// use no memory [so that we could log out-of-memory error]
+	setbuf(f, 0); // stderr stream is unbuffered by default, but still...
+
+	// prefix
+	time_t t=time(0);
+	if(const char* stamp=ctime(&t)) { // never saw that
+		if(size_t len=strlen(stamp)) // saw once stamp being =""
+			fprintf(f, "[%.*s] [%u] ", len-1, stamp,
+			(unsigned int)getpid()
+			);
+	}
+	// message
+
+	char buf[MAX_STRING];
+	size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
+	remove_crlf(buf, buf+size);
+	fwrite(buf, size, 1, f);
+
+	if(request_info)
+		fprintf(f, " [uri=%s, method=%s, cl=%u]",
+			request_info->uri? request_info->uri: "<unknown>",
+			request_info->method? request_info->method: "<unknown>",
+			request_info->content_length);
+	else
+		fputs(" [no request info]", f);
+
+	// newline
+	fputs("\n", f);
+
+	if(opened)
+		fclose(f);
+	else
+		fflush(f);
+}
+#ifdef PA_DEBUG_CGI_ENTRY_EXIT
+static void log(const char* fmt, ...) {
+    va_list args;
+	va_start(args,fmt);
+	log(fmt, args);
+	va_end(args);
+}
+#endif
+
+// appends to parser3.log located beside my binary if openable, to stderr otherwize
+void SAPI::log(SAPI_Info&, const char* fmt, ...) {
+    va_list args;
+	va_start(args,fmt);
+	::log(fmt, args);
+	va_end(args);
+}
+
+static void die_or_abort(const char* fmt, va_list args, bool write_core) {
+	// log
+
+	// logging is more important than user 
+	// she can cancel download, we'd get SIGPIPE, 
+	// nothing would be logged then
+	::log(fmt, args);
+
+	// inform user
+
+	char body[MAX_STRING];
+	int content_length=vsnprintf(body, MAX_STRING, fmt, args);
+
+	// prepare header
+	// let's be honest, that's bad we couldn't produce valid output
+	SAPI::add_header_attribute(SAPI_info, "status", "500");
+	SAPI::add_header_attribute(SAPI_info, "content-type", "text/plain");
+	char content_length_cstr[MAX_NUMBER];
+	snprintf(content_length_cstr, sizeof(content_length_cstr), "%u", content_length);
+	SAPI::add_header_attribute(SAPI_info, "content-length", content_length_cstr);
+
+	// send header
+	SAPI::send_header(SAPI_info);
+
+	// body
+	SAPI::send_body(SAPI_info, body, content_length);
+
+	// exit & try to produce core dump[unix] or invoke debugger[Win32 Debug version]
+	if(write_core) {
+#if defined(WIN32) && !defined(_DEBUG)
+		// IIS with abort failes to show STDOUT, it just barks "abnormal program termination"
+		exit(1);
+#else
+#if _MSC_VER
+		_asm int 3;
+#endif
+		abort();
+#endif
+	} 
+	else
+		exit(1);
+}
+
+void SAPI::die(const char* fmt, ...) {
+    va_list args;
+	va_start(args, fmt);
+	die_or_abort(fmt, args, false/*write core?*/);
+//unreachable anyway	va_end(args);
+}
+
+void SAPI::abort(const char* fmt, ...) {
+    va_list args;
+	va_start(args, fmt);
+	die_or_abort(fmt, args, true/*write core?*/);
+//unreachable anyway	va_end(args);
+}
+
+char* SAPI::get_env(SAPI_Info& , const char* name) {
+	if(char *local=getenv(name))
+		return pa_strdup(local);
+	else
+		return 0;
+}
+
+const char* const *SAPI::environment(SAPI_Info&) {
+#ifdef _MSC_VER
+	extern char **_environ;
+	return _environ;
+#else
+	extern char **environ;
+	return environ;
+#endif
+}
+
+size_t SAPI::read_post(SAPI_Info& , char *buf, size_t max_bytes) {
+	size_t read_size=0;
+	do {
+		ssize_t chunk_size=read(fileno(stdin), 
+			buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
+		if(chunk_size<=0)
+			break;
+		read_size+=chunk_size;
+	} while(read_size<max_bytes);
+
+	return read_size;
+}
+
+void SAPI::add_header_attribute(SAPI_Info& , const char* dont_store_key, const char* dont_store_value) {
+	if( cgi && (!request || !request->console.was_used()) )
+		printf("%s: %s\n", dont_store_key, dont_store_value);
+}
+
+/// @todo intelligent cache-control
+void SAPI::send_header(SAPI_Info& ) {
+	if(cgi) {
+//		puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
+
+		// header | body  delimiter
+		puts("");
+	}
+}
+
+size_t SAPI::send_body(SAPI_Info& , const void *buf, size_t size) {
+	return stdout_write(buf, size);
+}
 
-	$Id: parser3.C,v 1.1 2001/03/13 17:22:13 paf Exp $
+//
+
+static void full_file_spec(const char* file_name, char *buf, size_t buf_size) {
+	if(file_name)
+		if(file_name[0]=='/' 
+#ifdef WIN32
+			|| file_name[0] && file_name[1]==':'
+#endif
+			)
+				strncpy(buf, file_name, buf_size);
+		else {
+			char cwd[MAX_STRING];  getcwd(cwd, MAX_STRING);
+			snprintf(buf, buf_size, "%s/%s", cwd, file_name);
+		}
+	else
+		buf[0]=0;
+#ifdef WIN32
+	back_slashes_to_slashes(buf);
+#endif
+}
+
+static void log_signal(const char* signal_name) {
+	if(request_info)
+		SAPI::log(SAPI_info, "%s received while %s. uri=%s, method=%s, cl=%u",
+			signal_name,
+			request?"executing code":"reading data",
+			request_info->uri,
+			request_info->method,
+			request_info->content_length);
+	else
+		SAPI::log(SAPI_info, "%s received before or after processing request",
+			signal_name);
+}
+
+#ifdef SIGUSR1
+static void SIGUSR1_handler(int /*sig*/){
+	log_signal("SIGUSR1");
+}
+#endif
+
+#ifdef SIGPIPE
+#define SIGPIPE_NAME "SIGPIPE"
+static const String sigpipe_name(SIGPIPE_NAME);
+static void SIGPIPE_handler(int /*sig*/){
+	Value* sigpipe=0;
+	if(request)
+		sigpipe=request->main_class.get_element(sigpipe_name, request->main_class, false);
+	if(sigpipe && sigpipe->as_bool())
+	log_signal("SIGPIPE");
+
+	execution_canceled=true;
+	if(request)
+		request->set_interrupted(true);
+}
+#endif
+
+#ifdef WIN32
+const char* maybe_reconstruct_IIS_status_in_qs(const char* original) 
+{
+	// 404;http://servername/page[?param=value...]
+	// ';' should be urlencoded by HTTP standard, so we shouldn't get it from browser 
+	// and can consider that as an indication that this is IIS way to report errors
+
+	if(original 
+		&& isdigit((unsigned char)original[0])
+		&& isdigit((unsigned char)original[1])
+		&& isdigit((unsigned char)original[2])
+		&& original[3]==';') 
+	{
+		size_t original_len=strlen(original);
+        char* reconstructed=new(PointerFreeGC) char[original_len
+			+12/*IIS-STATUS=&*/
+			+14/*IIS-DOCUMENT=&*/
+			+1];
+		char* cur=reconstructed;
+		memcpy(cur, "IIS-STATUS=", 11);	 cur+=11;
+		memcpy(cur, original, 3); cur+=3;
+		*cur++='&';
+
+		const char* qmark_at=strchr(original, '?');
+		memcpy(cur, "IIS-DOCUMENT=", 13);  cur+=13;
+		{
+			size_t value_len=(qmark_at? qmark_at-original: original_len)-4;
+			memcpy(cur, original+4, value_len);  cur+=value_len;
+		}
+
+		if(qmark_at) {
+			*cur++='&';
+			strcpy(cur, qmark_at+1/*skip ? itself*/);
+		} else
+			*cur=0;
+
+		return reconstructed;
+	}
+	
+	return original;
+}
+#endif
+
+/**
+main workhorse
+
+  @todo 
+		IIS: remove trailing default-document[index.html] from $request.uri.
+		to do that we need to consult metabase,
+		wich is tested but seems slow.
 */
+static void real_parser_handler(const char* filespec_to_process,
+				const char* request_method, bool header_only) 
+{
+	// init socks
+	pa_socks_init();
+
+	// init global variables
+	pa_globals_init();
+	
+	if(!filespec_to_process || !*filespec_to_process)
+		SAPI::die("Parser/%s"
+#ifdef PA_DEBUG_CGI_ENTRY_EXIT
+		" with entry/exit tracing"
+#endif
+		, PARSER_VERSION);
+	
+	// Request info
+	Request_info request_info;  memset(&request_info, 0, sizeof(request_info));
+	char document_root_buf[MAX_STRING];
+	if(cgi) {
+		if(const char* env_document_root=getenv("DOCUMENT_ROOT"))
+			request_info.document_root=env_document_root;
+		else if(const char* path_info=getenv("PATH_INFO")) {
+			// IIS
+			size_t len=min(sizeof(document_root_buf)-1, strlen(filespec_to_process)-strlen(path_info));
+			memcpy(document_root_buf, filespec_to_process, len); document_root_buf[len]=0;
+			request_info.document_root=document_root_buf;
+		} else
+			throw Exception(PARSER_RUNTIME,
+				0,
+				"CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
+	} else {
+		full_file_spec("", document_root_buf, sizeof(document_root_buf));
+		request_info.document_root=document_root_buf;
+	}
+	request_info.path_translated=filespec_to_process;
+	request_info.method=request_method ? request_method : "GET";
+	const char* query_string=
+#ifdef WIN32
+		maybe_reconstruct_IIS_status_in_qs
+#endif
+		(getenv("QUERY_STRING"));
+	request_info.query_string=query_string;
+	if(cgi) {
+		// few absolute obligatory
+		const char* path_info=getenv("PATH_INFO");
+		if(!path_info)
+			SAPI::die("CGI: illegal call (missing PATH_INFO)");
+		const char* script_name=getenv("SCRIPT_NAME");
+		if(!script_name)
+				SAPI::die("CGI: illegal call (missing SCRIPT_NAME)");
+
+		const char* env_request_uri=getenv("REQUEST_URI");
+		if(env_request_uri)
+			request_info.uri=env_request_uri;
+		else 
+			if(query_string) {
+				char* reconstructed_uri=new(PointerFreeGC) char[
+					strlen(path_info)+1/*'?'*/+
+					strlen(query_string)+1/*0*/];
+				strcpy(reconstructed_uri, path_info);
+				strcat(reconstructed_uri, "?");
+				strcat(reconstructed_uri, query_string);
+				request_info.uri=reconstructed_uri;
+			} else
+				request_info.uri=path_info;
+
+		if(env_request_uri) { // apache & others stuck to standards
+			/*
+				http://parser3/env.html?123  =OK
+				$request:uri=/env.html?123
+				REQUEST_URI='/env.html?123'
+				SCRIPT_NAME='/cgi-bin/parser3'
+				PATH_INFO='/env.html'
+
+				http://parser3/cgi-bin/parser3/env.html?123 =ERROR
+				$request:uri=/cgi-bin/parser3/env.html?123
+				REQUEST_URI='/cgi-bin/parser3/env.html?123'
+				SCRIPT_NAME='/cgi-bin/parser3'
+				PATH_INFO='/env.html'
+			*/
+			size_t script_name_len=strlen(script_name);
+			size_t uri_len=strlen(env_request_uri);
+			if(strncmp(env_request_uri, script_name, script_name_len)==0 &&
+				script_name_len != uri_len) // under IIS they are the same
+				SAPI::die("CGI: illegal call (1)");
+		} else { // seen on IIS5
+			/*
+				http://nestle/env.html?123 =OK
+				$request:uri=/env.html?123
+				REQUEST_URI=''
+				SCRIPT_NAME='/env.html'
+				PATH_INFO='/env.html'
+
+				http://nestle/cgi-bin/parser3.exe/env.html =ERROR
+				$request:uri=/env.html
+				REQUEST_URI=''
+				SCRIPT_NAME='/cgi-bin/parser3.exe'
+				PATH_INFO='/env.html'
+			*/
+			if(strcmp(script_name, path_info)!=0)
+				SAPI::die("CGI: illegal call (2)");
+		}
+	} else
+		request_info.uri="";
+	
+	request_info.content_type=getenv("CONTENT_TYPE");
+	const char* content_length=getenv("CONTENT_LENGTH");
+	request_info.content_length=(content_length?atoi(content_length):0);
+	request_info.cookie=getenv("HTTP_COOKIE");
+	request_info.mail_received=mail_received;
+
+	// get request_info ptr for signal handlers
+	::request_info=&request_info;
+	if(execution_canceled)
+		SAPI::die("Execution canceled");
+
+#ifdef PA_DEBUG_CGI_ENTRY_EXIT
+	log("request_info: method=%s, uri=%s, q=%s, dr=%s, pt=%s, cookies=%s, cl=%u", 
+		request_info.method,
+		request_info.uri,
+		request_info.query_string,
+		request_info.document_root,
+		request_info.path_translated,
+		request_info.cookie,
+		request_info.content_length);
+#endif
+
+	// prepare to process request
+	Request request(SAPI_info, request_info,
+		cgi ? String::Language(String::L_HTML|String::L_OPTIMIZE_BIT) : String::L_AS_IS,
+		true /* status_allowed */);
+
+	// get request ptr for signal handlers
+	::request=&request;
+
+	char config_filespec_buf[MAX_STRING];
+	if(!config_filespec_cstr) {
+		const char* config_by_env=getenv(PARSER_CONFIG_ENV_NAME);
+		if(!config_by_env)
+			config_by_env=getenv(REDIRECT_PREFIX PARSER_CONFIG_ENV_NAME);
+		if(config_by_env)
+			config_filespec_cstr=config_by_env;
+		else {
+			// beside by binary
+			char beside_binary_path[MAX_STRING];
+			strncpy(beside_binary_path, argv0, MAX_STRING-1);  beside_binary_path[MAX_STRING-1]=0; // filespec of my binary
+			if(!(
+				rsplit(beside_binary_path, '/') || 
+				rsplit(beside_binary_path, '\\'))) { // strip filename
+				// no path, just filename
+				// @todo full path, not ./!
+				beside_binary_path[0]='.'; beside_binary_path[1]=0;
+			}
+			snprintf(config_filespec_buf, MAX_STRING, 
+				"%s/%s", 
+				beside_binary_path, AUTO_FILE_NAME);
+			config_filespec_cstr=config_filespec_buf;
+			fail_on_config_read_problem=entry_exists(config_filespec_cstr);
+		}
+	}
+	
+	// process the request
+	request.core(
+		config_filespec_cstr, fail_on_config_read_problem,
+		header_only);
+
+	// no request [prevent signal handlers from accessing invalid memory]
+	::request=0;
+
+	// finalize global variables
+	pa_globals_done();
+
+	//
+	pa_socks_done();
+}
 
-#include "core.h"
+#ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
+static const Exception 
+call_real_parser_handler__do_PEH_return_it(
+	const char* filespec_to_process,
+	const char* request_method, bool header_only) 
+{
+	try {
+		real_parser_handler(
+			filespec_to_process,
+			request_method, header_only);
+	} catch(const Exception& e) {
+		return e;
+	}
+
+	return Exception();
+}
+static void call_real_parser_handler__supress_system_exception(
+	const char* filespec_to_process,
+	const char* request_method, bool header_only) 
+{
+	Exception parser_exception;
+	LPEXCEPTION_POINTERS system_exception=0;
+
+	__try {
+		parser_exception=call_real_parser_handler__do_PEH_return_it(
+			filespec_to_process,
+			request_method, header_only);
+	} __except (
+		(system_exception=GetExceptionInformation()), 
+		EXCEPTION_EXECUTE_HANDLER) 
+	{
+
+		if(system_exception)
+			if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
+				throw Exception("system",
+					0,
+					"0x%08X at 0x%08X", er->ExceptionCode,  er->ExceptionAddress);
+			else
+				throw Exception("system", 
+					0, 
+					"<no exception record>");
+		else
+			throw Exception("system", 
+				0, 
+				"<no exception information>");
+	}
+
+	if(parser_exception)
+		throw Exception(parser_exception);
+}
+#endif
+
+static void usage(const char* program) {
+	printf(
+		"Parser/%s\n"
+		"Copyright(c) 2001-2007 ArtLebedev Group (http://www.artlebedev.com)\n"
+		"Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
+		"\n"
+		"Usage: %s [options] file\n"
+		"Options are:\n"
+#ifdef WITH_MAILRECEIVE
+		"    -m              Parse mail, put received letter to $mail:received\n"
+#endif
+		"    -f config_file  Use this config file (/path/to/auto.p)\n"
+		"    -h              Display usage information (this message)\n"
+		, PARSER_VERSION, 
+		program);
+	exit(EINVAL);
+}
 
 int main(int argc, char *argv[]) {
-	core();
+#ifdef PA_DEBUG_CGI_ENTRY_EXIT
+	log("main: entry");
+#endif
+	//_asm int 3;
+	GC_java_finalization=0;
+
+#ifndef PA_DEBUG_DISABLE_GC
+	// Dont collect unless explicitly requested 
+	// this is quicker (~30% ), but less memory-efficient(~8%)
+	// so deciding for speed
+	GC_dont_gc=1; 
+#endif
+/*
+	
+	Array<int> test;
+	test+=3;
+	test+=4;
+//	int a=test.count();
+	int i=0;
+	scanf("%d", &i);
+	int b=test.get(i);
+//	int b=test.get(10);
+	printf("%d", b);//test.count());*/
+
+#ifdef SIGUSR1
+    if(signal(SIGUSR1, SIGUSR1_handler)==SIG_ERR)
+		SAPI::die("Can not set handler for SIGUSR1");
+#endif
+#ifdef SIGPIPE
+    if(signal(SIGPIPE, SIGPIPE_handler)==SIG_ERR)
+		SAPI::die("Can not set handler for SIGPIPE");
+#endif
+
+
+#ifdef DEBUG_MAILRECEIVE
+	if(FILE *fake_in=fopen(DEBUG_MAILRECEIVE, "rt")) {
+		dup2(fake_in->_file, 0/*STDIN_FILENO*/);
+	}
+#endif
+
+#ifdef _DEBUG
+	//_crtBreakAlloc=46;
+#endif
+	argv0=argv[0];
+
+	umask(2);
+
+	// were we started as CGI?
+	cgi=
+		getenv("SERVER_SOFTWARE") || 
+		getenv("SERVER_NAME") || 
+		getenv("GATEWAY_INTERFACE") || 
+		getenv("REQUEST_METHOD");
+	
+	char *raw_filespec_to_process;
+	if(cgi) {
+		raw_filespec_to_process=getenv("PATH_TRANSLATED");
+		if(raw_filespec_to_process && !*raw_filespec_to_process)
+			raw_filespec_to_process=0;
+	} else {
+		optind = 1;
+		opterr = 0;
+		int c;
+		while((c = getopt(argc, argv, "hf:"
+#ifdef WITH_MAILRECEIVE
+			"m"
+#endif
+			)) > 0) {
+			switch (c) {
+			case 'h':
+				usage(argv[0]);
+				break;
+			case 'f':
+				config_filespec_cstr=optarg;
+				break;
+#ifdef WITH_MAILRECEIVE
+			case 'm':
+				mail_received=true;
+				break;
+#endif
+			default:
+				fprintf(stderr, "%s: invalid option '%c'\n", argv[0], optopt);
+				usage(argv[0]);
+				break;
+			}
+		}
+		if (optind != argc - 1) {
+			fprintf(stderr, "%s: file not specified\n", argv[0]);
+			usage(argv[0]);
+		}
+		
+		raw_filespec_to_process=argv[optind++];
+	}
+
+#ifdef WIN32
+	setmode(fileno(stdin), _O_BINARY);
+	setmode(fileno(stdout), _O_BINARY);
+	setmode(fileno(stderr), _O_BINARY);
+#endif
+
+#if defined(_MSC_VER) && defined(_DEBUG)
+	// Get current flag
+	int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
+
+	// Turn on leak-checking bit
+	tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
+
+	// Set flag to the new value
+	_CrtSetDbgFlag( tmpFlag );
+//	_CrtSetBreakAlloc(61);
+
+	_CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE );
+	_CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR );
+#endif
+
+	char filespec_to_process[MAX_STRING];
+	full_file_spec(raw_filespec_to_process, filespec_to_process, sizeof(filespec_to_process));
+
+	const char* request_method=getenv("REQUEST_METHOD");
+	bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
+
+	try { // global try
+#ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
+		call_real_parser_handler__supress_system_exception(
+#else
+		real_parser_handler(
+#endif
+			filespec_to_process,
+			request_method, header_only);
+	} catch(const Exception& e) { // global problem 
+		// don't allocate anything on pool here:
+		//   possible pool' exception not catch-ed now
+		//   and there could be out-of-memory exception
+		char buf[MAX_STRING];
+		snprintf(buf, MAX_STRING, "Unhandled exception %s",
+			e.comment());
+		// log it
+		SAPI::log(SAPI_info, "%s", buf);
+
+		//
+		int content_length=strlen(buf);
+
+		// prepare header
+		SAPI::add_header_attribute(SAPI_info, "content-type", "text/plain");
+		char content_length_cstr[MAX_NUMBER];
+		snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
+		SAPI::add_header_attribute(SAPI_info, "content-length", content_length_cstr);
+
+		// send header
+		SAPI::send_header(SAPI_info);
+
+		// send body
+		if(!header_only)
+			SAPI::send_body(SAPI_info, buf, content_length);
+
+		// unsuccessful finish
+	}
+
+#ifdef PA_DEBUG_CGI_ENTRY_EXIT
+	log("main: successful return");
+#endif
 	return 0;
 }