--- parser3/src/targets/cgi/parser3.C	2001/03/21 16:59:07	1.29
+++ parser3/src/targets/cgi/parser3.C	2002/01/31 10:20:21	1.151
@@ -1,93 +1,160 @@
 /** @file
 	Parser: scripting and CGI main.
 
-	Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
+	Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
+	Author: Alexander Petrosyan <paf@design.ru>(http://paf.design.ru)
 
-	Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
-
-	$Id: parser3.C,v 1.29 2001/03/21 16:59:07 paf Exp $
+	$Id: parser3.C,v 1.151 2002/01/31 10:20:21 paf Exp $
 */
 
-#ifdef HAVE_CONFIG_H
-#	include "pa_config.h"
+#include "pa_config_includes.h"
+
+#if _MSC_VER
+#	include <new.h>
+#	include <crtdbg.h>
+#else
+#	include "pa_config_paths.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"
+#include "pool_storage.h"
 
 #ifdef WIN32
 #	include <windows.h>
-#	include <io.h>
-#else
-#	include <unistd.h>
 #endif
 
-//\ifwin32
-#include <io.h>
-//#include <fcntl.h>
-//\endifwin32
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <fcntl.h>
+//#define DEBUG_POOL_MALLOC
 
-#include "pa_common.h"
-#include "pa_globals.h"
-#include "pa_request.h"
+// consts
 
-Pool pool; // global pool
+extern const char *main_RCSIds[];
+#ifdef USE_SMTP
+extern const char *smtp_RCSIds[];
+#endif
+extern const char *gd_RCSIds[];
+extern const char *classes_RCSIds[];
+extern const char *types_RCSIds[];
+extern const char *parser3_RCSIds[];
+const char **RCSIds[]={
+	main_RCSIds,
+#ifdef USE_SMTP
+	smtp_RCSIds,
+#endif
+	gd_RCSIds,
+	classes_RCSIds,
+	types_RCSIds,
+	parser3_RCSIds,
+	0
+};
+
+/// IIS refuses to read bigger chunks
+const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M 
+
+const char *argv0;
+Pool_storage pool_storage;
+Pool pool(&pool_storage); // global pool [dont describe to doxygen: it confuses it with param names]
 bool cgi; ///< we were started as CGI?
 
-#ifdef WIN32
-#	if _MSC_VER
-// intercept global system errors
-LONG WINAPI TopLevelExceptionFilter (
-									 struct _EXCEPTION_POINTERS *ExceptionInfo
-									 ) {
+// SAPI
+
+static void log(const char *fmt, va_list args) {
+	bool opened;
+	FILE *f=0;
+
+	if(argv0) {
+		// beside by binary
+		char file_spec[MAX_STRING];
+		strncpy(file_spec, argv0, MAX_STRING-1);  file_spec[MAX_STRING-1]=0; // filespec of my binary
+		rsplit(file_spec, '/');  rsplit(file_spec, '\\');// strip filename
+		strcat(file_spec, "/parser3.log");
+		f=fopen(file_spec, "at");
+	}
+	opened=f!=0;
+	if(!opened)
+		f=stderr;
+
+	// prefix
+	time_t t=time(0);
+	const char *stamp=ctime(&t);
+	fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
+	// message
+
 	char buf[MAX_STRING];
-	if(ExceptionInfo && ExceptionInfo->ExceptionRecord) {
-		struct _EXCEPTION_RECORD *r=ExceptionInfo->ExceptionRecord;
-		
-		int printed=0;
-		printed+=snprintf(buf+printed, MAX_STRING-printed, "Exception 0x%X at 0x%p", 
-			r->ExceptionCode, 
-			r->ExceptionAddress);
-		for(unsigned int i=0; i<r->NumberParameters; i++)
-			printed+=snprintf(buf+printed, MAX_STRING-printed, ", 0x%X", 
-				r->ExceptionInformation[i]);
-	} else 
-		strcpy(buf, "Exception <unknown>");
-	
-	PTHROW(0, 0,
-		0,
-		buf);
+	size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
+	remove_crlf(buf, buf+size);
 
-	return EXCEPTION_EXECUTE_HANDLER; // never reached
+	fwrite(buf, size, 1, f);
+	// newline
+	fprintf(f, "\n");
+
+	if(opened)
+		fclose(f);
+	else
+		fflush(f);
+}
+
+// appends to parser3.log located beside my binary if openable, to stderr otherwize
+void SAPI::log(Pool& , const char *fmt, ...) {
+    va_list args;
+	va_start(args,fmt);
+	::log(fmt, args);
+	va_end(args);
 }
-#	endif
 
+void SAPI::die(const char *fmt, ...) {
+#ifdef DEBUG_POOL_MALLOC
+	extern void log_pool_stats(Pool& pool);
+	log_pool_stats(pool);
 #endif
 
-//\if
-void fix_slashes(char *s) {
-	if(s)
-		for(; *s; s++)
-			if(*s=='\\')
-				*s='/';
-}
-//\endif
+    va_list args;
+	va_start(args,fmt);
+	// log
+
+	// logging is more important than user 
+	// she can cancel download, we'd get SIG_PIPE, 
+	// nothing would be logged then
+	::log(fmt, args);
+
+	// inform user
+
+	char body[MAX_STRING];
+	int content_length=vsnprintf(body, MAX_STRING, fmt, args);
+
+	va_end(args);
+
+	// prepare header
+	// let's be honest, that's bad we couldn't produce valid output
+	SAPI::add_header_attribute(pool, "status", "500");
+	SAPI::add_header_attribute(pool, "content-type", "text/plain");
+	char content_length_cstr[MAX_NUMBER];
+	snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
+	SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
 
-// service funcs
+	// send header
+	SAPI::send_header(pool);
 
-const char *get_env(Pool& pool, const char *name) {
- 	return getenv(name);
+	// body
+	SAPI::send_body(pool, body, content_length);
+
+	exit(1);
+}
+
+const char *SAPI::get_env(Pool& , const char *name) {
+	return getenv(name);
 }
 
-int read_post(char *buf, int max_bytes) {
-	int read_size=0;
+size_t SAPI::read_post(Pool& , char *buf, size_t max_bytes) {
+	size_t read_size=0;
 	do {
-		int chunk_size=read
-			(fileno(stdin), buf+read_size, min(0x400*0x400, max_bytes-read_size));
-		if(chunk_size<0)
+		int 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);
@@ -95,34 +162,233 @@ int read_post(char *buf, int max_bytes)
 	return read_size;
 }
 
-void output_header_attribute(const char *key, const char *value) {
+void SAPI::add_header_attribute(Pool& , const char *key, const char *value) {
 	if(cgi)
 		printf("%s: %s\n", key, value);
 }
 
-void output_body(const char *buf, size_t size) {
-	if(cgi) // header | body  delimiter
+/// @todo intelligent cache-control
+void SAPI::send_header(Pool& ) {
+	if(cgi) {
+//		puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
+
+		// header | body  delimiter
 		puts("");
+	}
+}
 
+void SAPI::send_body(Pool& , const void *buf, size_t size) {
 	stdout_write(buf, size);
 }
 
-// main
+//
 
-int main(int argc, char *argv[]) {
-	// TODO:umask(2);
-//\#ifdef WIN32
-	setmode(fileno(stdin), _O_BINARY);
-	setmode(fileno(stdout), _O_BINARY);
-	setmode(fileno(stderr), _O_BINARY);
-//\#endif
+char *full_file_spec(char *file_name) {
+	if(file_name && !strchr(file_name, '/')) {
+		static char cwd[MAX_STRING];  getcwd(cwd, MAX_STRING);
+		static char buf[MAX_STRING];
+		snprintf(buf, MAX_STRING, "%s/%s", cwd, file_name);
+		return buf;
+	}
+	return file_name;
+}
+
+/**
+main workhorse
 
-	// Service funcs 
-	service_funcs.get_env=get_env;
-	service_funcs.read_post=read_post;
-	service_funcs.output_header_attribute=output_header_attribute;
-	service_funcs.output_body=output_body;
+  @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.
+		IIS5 todo find out proper 'illegal call' check 
+*/
+void real_parser_handler(
+					const char *filespec_to_process,
+					const char *request_method, bool header_only) {
+	// init socks
+	init_socks(pool);
+	
+	// init global classes
+	init_methoded_array(pool);
+	// init global variables
+	pa_globals_init(pool);
+	
+	if(!filespec_to_process)
+		SAPI::die("Parser/%s", PARSER_VERSION);
+	
+	// Request info
+	Request::Info request_info;
+	if(cgi) {
+		if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
+			request_info.document_root=env_document_root;
+		else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
+			// IIS
+			size_t len=strlen(filespec_to_process)-strlen(path_info);
+			char *buf=(char *)pool.malloc(len+1);
+			memcpy(buf, filespec_to_process, len); buf[len]=0;
+			request_info.document_root=buf;
+		} else
+			throw Exception(0, 0,
+			0,
+			"CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
+	} else {
+		static char buf[MAX_STRING];
+		strncpy(buf, filespec_to_process, MAX_STRING-1); buf[MAX_STRING-1]=0;
+		if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename
+			request_info.document_root=buf;
+		else
+			request_info.document_root="";
+	}
+	request_info.path_translated=filespec_to_process;
+	request_info.method=request_method ? request_method : "GET";
+	const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
+	request_info.query_string=query_string;
+	if(cgi) {
+		if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
+			request_info.uri=env_request_uri;
+		else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
+			if(query_string) {
+				char *reconstructed_uri=(char *)pool.malloc(
+					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;
+			else
+				throw Exception(0, 0,
+				0,
+				"CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
+			
+#ifndef WIN32
+			// they've changed this under IIS5.
+			if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
+				size_t script_name_len=strlen(script_name);
+				size_t uri_len=strlen(request_info.uri);
+				if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
+					script_name_len != uri_len) // under IIS they are the same
+					SAPI::die("CGI: illegal call");
+			}
+#endif
+	} else
+		request_info.uri=0;
+	
+	request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
+	const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
+	request_info.content_length=(content_length?atoi(content_length):0);
+	request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
+	request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
+	
+	// prepare to process request
+	Request request(pool,
+		request_info,
+#ifdef _DEBUG
+		String::UL_HTML|String::UL_OPTIMIZE_BIT
+#else
+		cgi ? String::UL_HTML|String::UL_OPTIMIZE_BIT : String::UL_AS_IS
+#endif
+		,
+		true /* status_allowed */);
+	
+	// some root-controlled location
+#ifdef PARSER_ROOT_CONFIG_DIR
+	const char *root_config_filespec=PARSER_ROOT_CONFIG_DIR "/" CONFIG_FILE_NAME;
+#else
+#	ifdef WIN32
+	// c:\windows
+	char root_config_path[MAX_STRING];
+	GetWindowsDirectory(root_config_path, MAX_STRING);
 	
+	char root_config_filespec[MAX_STRING];
+	snprintf(root_config_filespec, MAX_STRING, 
+		"%s/%s", 
+		root_config_path, CONFIG_FILE_NAME);
+#	else
+#error must be compiled either configure/make or MSVC++
+#	endif
+#endif
+	
+	// beside by binary
+	// @todo full path, not ./!
+	static char site_config_path[MAX_STRING];
+	strncpy(site_config_path, argv0, MAX_STRING-1);  site_config_path[MAX_STRING-1]=0; // filespec of my binary
+	if(!(
+		rsplit(site_config_path, '/') || 
+		rsplit(site_config_path, '\\'))) { // strip filename
+		// no path, just filename
+		site_config_path[0]='.'; site_config_path[1]=0;
+	}
+	
+	char site_config_filespec[MAX_STRING];
+	snprintf(site_config_filespec, MAX_STRING, 
+		"%s/%s", 
+		site_config_path, CONFIG_FILE_NAME);
+	
+	// process the request
+	request.core(
+		root_config_filespec, false,
+		site_config_filespec, false,
+		header_only);
+	
+	//
+	done_socks();
+	
+#ifdef DEBUG_POOL_MALLOC
+	extern void log_pool_stats(Pool& pool);
+	log_pool_stats(pool);
+#endif
+}
+
+void call_real_parser_handler__do_SEH(
+								 const char *filespec_to_process,
+								 const char *request_method, bool header_only) {
+#if _MSC_VER && !defined(_DEBUG)
+	LPEXCEPTION_POINTERS system_exception=0;
+	__try {
+#endif
+		real_parser_handler(
+			filespec_to_process,
+			request_method, header_only);
+		
+#if _MSC_VER && !defined(_DEBUG)
+	} __except (
+		(system_exception=GetExceptionInformation()), 
+		EXCEPTION_EXECUTE_HANDLER) {
+		
+		if(system_exception)
+			if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
+				throw Exception(0, 0,
+				0,
+				"Exception 0x%08X at 0x%08X", er->ExceptionCode,  er->ExceptionAddress);
+			else
+				throw Exception(0, 0, 0, "Exception <no exception record>");
+			else
+				throw Exception(0, 0, 0, "Exception <no exception information>");
+	}
+#endif
+}
+
+#if _MSC_VER
+int failed_new(size_t size) {
+	SAPI::die("out of memory in 'new', failed to allocated %u bytes", size);
+	return 0; // not reached
+}
+#endif
+
+#ifdef HAVE_SET_NEW_HANDLER
+void failed_new() {
+    SAPI::die("out of memory in 'new'");
+}
+#endif
+
+int main(int argc, char *argv[]) {
+//	_asm int 3;
+	argv0=argv[0];
+
+	umask(2);
+
 	// were we started as CGI?
 	cgi=
 		getenv("SERVER_SOFTWARE") || 
@@ -132,110 +398,75 @@ int main(int argc, char *argv[]) {
 	
 	if(!cgi) {
 		if(argc<2) {
-			char *binary=argv[0];
-			printf("Usage: %s <file>\n", binary?binary:"parser3");
-			exit(1);
+			printf(
+				"Parser/%s Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)\n"
+				"Author: Alexander Petrosyan <paf@design.ru>(http://paf.design.ru)\n"
+				"\n"
+				"Usage: %s <file>\n",
+				PARSER_VERSION, 
+				argv0?argv0:"parser3");
+			return 1;
 		}
 	}
 
-	char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
-//\#ifdef WIN32
-	fix_slashes(filespec_to_process);
-//\#endif
-
-	PTRY { // global try
-		// must be first in PTRY{}PCATCH
 #ifdef WIN32
-#	if _MSC_VER
-		SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
-		//TODO: initSocks();
-#	endif
+	setmode(fileno(stdin), _O_BINARY);
+	setmode(fileno(stdout), _O_BINARY);
+	setmode(fileno(stderr), _O_BINARY);
 #endif
 
-		// init global variables
-		globals_init(pool);
+#if _MSC_VER
+	_set_new_handler(failed_new);
 
-		if(!filespec_to_process)
-			PTHROW(0, 0,
-				0,
-				"no file to process");
+#ifdef _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(471);
 
-		// Request info
-		Request::Info request_info;
-		const char *document_root=getenv("DOCUMENT_ROOT");
-		if(!document_root) {
-			static char fake_document_root[MAX_STRING];
-			strncpy(fake_document_root, filespec_to_process, MAX_STRING);
-			rsplit(fake_document_root, '/');  rsplit(fake_document_root, '\\');// strip filename
-			document_root=fake_document_root;
-		}
-		request_info.document_root=document_root;
-		request_info.path_translated=filespec_to_process;
-		request_info.method=getenv("REQUEST_METHOD");
-		request_info.query_string=getenv("QUERY_STRING");
-		request_info.uri=getenv("REQUEST_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");
-
-		// prepare to process request
-		Pool request_pool;
-		Request request(request_pool,
-			request_info,
-			cgi ? String::UL_HTML_TYPO : String::UL_NO
-			);
-		
-		// some root-controlled location
-		char *sys_auto_path1;
-#ifdef WIN32
-		// c:\windows
-		sys_auto_path1=(char *)pool.malloc(MAX_STRING);
-		GetWindowsDirectory(sys_auto_path1, MAX_STRING);
-		strcat(sys_auto_path1, PATH_DELIMITER_STRING);
-#else
-		// ~nobody
-		sys_auto_path1=getenv("HOME");
 #endif
-		
-		// beside by binary
-		char *sys_auto_path2=(char *)pool.malloc(MAX_STRING);
-		strncpy(sys_auto_path2, argv[0], MAX_STRING);  // filespec of my binary
-		rsplit(sys_auto_path2, '/');  rsplit(sys_auto_path2, '\\');// strip filename
-		strcat(sys_auto_path2, PATH_DELIMITER_STRING);
-		
-		// process the request
-		request.core(pool.exception(),
-			sys_auto_path1, 
-			sys_auto_path2);
-		// no actions with request' data past this point
-		// request.exception not not handled here, but all
-		// request' data are associated with it's pool=exception
 
-		// must be last in PTRY{}PCATCH
+#endif
+
+#ifdef HAVE_SET_NEW_HANDLER
+	std::set_new_handler(failed_new);
+#endif
+
+	char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
 #ifdef WIN32
-#	if _MSC_VER
-		SetUnhandledExceptionFilter(0);
-#	endif
+	back_slashes_to_slashes(filespec_to_process);
 #endif
-		// successful finish
-		return 0;
-	} PCATCH(e) { // global problem 
-		const char *body=e.comment();
-		int content_length=strlen(body);
-
-		// header
-		(*service_funcs.output_header_attribute)("content-type", "text/plain");
-		char content_length_cstr[MAX_NUMBER];
-		snprintf(content_length_cstr, MAX_NUMBER, "%d", content_length);
-		(*service_funcs.output_header_attribute)("content-length", 
-			content_length_cstr);
+	filespec_to_process=full_file_spec(filespec_to_process);
 
-		// body
-		(*service_funcs.output_body)(body, content_length);
+	const char *request_method=getenv("REQUEST_METHOD");
+	bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
 
-		// unsuccessful finish
-		return 1;
+	try { // global try
+		call_real_parser_handler__do_SEH(
+			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
+
+		SAPI::die("exception in request exception handler: %s", e.comment());
+#ifndef _DEBUG
+	} catch(...) { 
+		SAPI::die("<unknown exception>");
+#endif
 	}
-	PEND_CATCH
+	
+
+#ifndef WIN32
+	// 
+	if(!cgi)
+		SAPI::send_body(pool, "\n", 1);
+#endif
+	return 0;
 }