--- parser3/src/targets/cgi/parser3.C	2001/03/13 19:35:07	1.4
+++ parser3/src/targets/cgi/parser3.C	2001/10/22 16:44:43	1.124
@@ -1,106 +1,433 @@
-/*
-	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.
 
-	$Id: parser3.C,v 1.4 2001/03/13 19:35:07 paf Exp $
+	Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
+	Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
+
+	$Id: parser3.C,v 1.124 2001/10/22 16:44:43 parser Exp $
 */
 
-#include "pa_config.h"
+#include "pa_config_includes.h"
 
 #ifdef WIN32
 #	include <windows.h>
-#	include <io.h>
 #endif
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <fcntl.h>
 
-#include "core.h"
-#include "pa_request.h"
+#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
-// TODO:  LONG WINAPI TopLevelExceptionFilter (
+#ifdef XML
+#include <XalanTransformer/XalanCAPI.h>
 #endif
 
-int main(int argc, char *argv[]) {
-#ifdef WIN32
-	_fmode=_O_BINARY;			/*sets default for file streams to binary */
-	setmode(_fileno(stdin), _O_BINARY);		/* make the stdio mode be binary */
-	setmode(_fileno(stdout), _O_BINARY);		/* make the stdio mode be binary */
-	setmode(_fileno(stderr), _O_BINARY);		/* make the stdio mode be binary */
+//#define DEBUG_POOL_MALLOC
 
-	//TODO:	SetUnhandledExceptionFilter(&TopLevelExceptionFilter);
-	//TODO: initSocks();
+// consts
+
+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[];
+#ifdef XML
+extern const char *xalan_patched_RCSIds[];
+#endif
+const char **RCSIds[]={
+	main_RCSIds,
+#ifdef USE_SMTP
+	smtp_RCSIds,
 #endif
+	gd_RCSIds,
+	classes_RCSIds,
+	types_RCSIds,
+	parser3_RCSIds,
+#ifdef XML
+	xalan_patched_RCSIds,
+#endif
+	0
+};
 
-	
-	Pool pool;
-	core(pool);
+/// IIS refuses to read bigger chunks
+const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M 
 
-	// were we started as CGI?
-	bool cgi=
-		getenv("SERVER_SOFTWARE") || 
-		getenv("SERVER_NAME") || 
-		getenv("GATEWAY_INTERFACE") || 
-		getenv("REQUEST_METHOD");
+const char *argv0;
+Pool pool(0); // global pool [dont describe to doxygen: it confuses it with param names]
+bool cgi; ///< we were started as CGI?
+
+// 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];
+	size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
+	remove_crlf(buf, buf+size);
+
+	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);
+}
+
+void SAPI::die(const char *fmt, ...) {
+    va_list args;
+	va_start(args,fmt);
+	::log(fmt, args);
+	va_end(args);
+
+	exit(1);
+}
+
+const char *SAPI::get_env(Pool& , const char *name) {
+	return getenv(name);
+}
+
+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(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;
+}
 
-	// TODO: ifdef WIN32 flip \\ to /
-	const char *document_root="Y:/parser3/src/";
-	const char *page_filespec="Y:/parser3/src/test.p";
+void SAPI::add_header_attribute(Pool& , const char *key, const char *value) {
+	if(cgi)
+		printf("%s: %s\n", key, value);
+}
+
+/// @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("");
+	}
+}
 
-	// request
+void SAPI::send_body(Pool& , const void *buf, size_t size) {
+	stdout_write(buf, size);
+}
+
+//
+
+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
+
+  @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.
+*/
+void real_parser_handler(
+					const char *filespec_to_process,
+					const char *request_method, bool header_only) {
+	// init socks
+	init_socks(pool);
+	
+#ifdef XML
+	/**
+	* Initialize Xerces and Xalan.
+	*
+	* Should be called only once per process before making
+	* any other API calls.
+	*/
+	//_asm int 3;
+	XalanInitialize();
+#endif
+	
+	// init global classes
+	init_methoded_array(pool);
+	// init global variables
+	pa_globals_init(pool);
+	
+	if(!filespec_to_process)
+		throw Exception(0, 0,
+		0,
+		"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)");
+			
+			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
+					throw Exception(0, 0,
+					0,
+					"CGI: illegal call");
+			}
+	} 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,
-		cgi ? String::Untaint_lang::HTML_TYPO : String::Untaint_lang::NO,
-		document_root,
-		page_filespec
+		request_info,
+		cgi ? String::UL_USER_HTML : String::UL_AS_IS
 		);
 	
 	// some root-controlled location
-	char *sys_auto_path1;
-#ifdef WIN32
-	sys_auto_path1=(char *)pool.malloc(MAX_STRING);
-	GetWindowsDirectory(sys_auto_path1, MAX_STRING-1/*for \*/);
-	strcat(sys_auto_path1, "\\");
+#ifdef SYSCONFDIR
+	const char *root_config_filespec=SYSCONFDIR "/" CONFIG_FILE_NAME;
 #else
-	sys_auto_path1=getenv("HOME");
+#	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
-	char *sys_auto_path2=(char *)pool.malloc(MAX_STRING);
-	strncpy(sys_auto_path2, argv[0], MAX_STRING-20);  // filespec of my binary
-	rsplit(sys_auto_path2, '\\');  rsplit(sys_auto_path2, '/'); // strip filename
-	
-	char *result=request.core(
-		sys_auto_path1, 
-		sys_auto_path2);
+	// @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;
+	}
 	
-	const char *error="nested exception";
-	if(cgi) {
-		if(result) {
-			const char *content_type="text/html";
-			printf(
-				"Content-type: %s\n"
-				"Content-length: %d\n"
-				"\n", 
-				content_type,
-				strlen(result));
-			stdout_write(result);
-		} else {
+	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
+}
+
+int main(int argc, char *argv[]) {
+	int result;
+	argv0=argv[0];
+
+	umask(2);
+
+	// were we started as CGI?
+	cgi=
+		getenv("SERVER_SOFTWARE") || 
+		getenv("SERVER_NAME") || 
+		getenv("GATEWAY_INTERFACE") || 
+		getenv("REQUEST_METHOD");
+	
+	if(!cgi) {
+		if(argc<2) {
 			printf(
-				"Content-type: text/plain\n"
-				"Content-length: %d\n"
-				"\n", 
-				strlen(error));
-			stdout_write(error);
+				"Parser/%s Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)\n"
+				"Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)\n"
+				"\n"
+				"Usage: %s <file>\n",
+				PARSER_VERSION, 
+				argv0?argv0:"parser3");
+			return 1;
 		}
-	} else
-		if(result)
-			printf("%s", result);
-		else
-			fputs(error, stderr);
+	}
+
+#ifdef WIN32
+	setmode(fileno(stdin), _O_BINARY);
+	setmode(fileno(stdout), _O_BINARY);
+	setmode(fileno(stderr), _O_BINARY);
+#endif
+
+	char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
+#ifdef WIN32
+	back_slashes_to_slashes(filespec_to_process);
+#endif
+	filespec_to_process=full_file_spec(filespec_to_process);
 
-	return 0;
+	const char *request_method=getenv("REQUEST_METHOD");
+	bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
+	try { // global try
+		call_real_parser_handler__do_SEH(
+			filespec_to_process,
+			request_method, header_only);
+
+		// successful finish
+		result=0;
+	} 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
+
+		const char *body=e.comment();
+		// log it
+		SAPI::log(pool, "exception in request exception handler: %s", body);
+
+		//
+		int content_length=strlen(body);
+
+		// prepare header
+		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);
+
+		// send header
+		SAPI::send_header(pool);
+
+		// body
+		if(!header_only)
+			SAPI::send_body(pool, body, content_length);
+
+		// unsuccessful finish
+		result=1;
+	}
+	
+
+#ifndef WIN32
+	// 
+	if(!cgi)
+		SAPI::send_body(pool, "\n", 1);
+#endif
+	return result;
 }