--- parser3/src/targets/cgi/parser3.C 2003/02/21 11:59:26 1.216.2.14 +++ parser3/src/targets/cgi/parser3.C 2006/04/09 13:38:47 1.239 @@ -1,11 +1,11 @@ /** @file Parser: scripting and CGI main. - Copyright(c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) + Copyright(c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) Author: Alexandr Petrosian (http://paf.design.ru) */ -static const char* IDENT_PARSER3_C="$Date: 2003/02/21 11:59:26 $"; +static const char * const IDENT_PARSER3_C="$Date: 2006/04/09 13:38:47 $"; #include "pa_config_includes.h" @@ -27,13 +27,22 @@ static const char* IDENT_PARSER3_C="$Dat # include #endif -//#define DEBUG_POOL_MALLOC +// 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 @@ -47,6 +56,8 @@ static bool mail_received=false; ///< we // for signal handlers Request *request=0; +Request_info *request_info=0; +bool execution_canceled=false; // SAPI @@ -56,7 +67,19 @@ static void log(const char* fmt, va_list bool opened=false; FILE *f=0; - if(config_filespec_cstr) { + 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(!( @@ -83,23 +106,41 @@ static void log(const char* fmt, va_list 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] ", len-1, stamp); + 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: "", + request_info->method? request_info->method: "", + request_info->content_length); + else + fputs(" [no request info]", f); + // newline - fprintf(f, "\n"); + 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, ...) { @@ -109,15 +150,7 @@ void SAPI::log(SAPI_Info&, const char* f va_end(args); } -void SAPI::die(const char* fmt, ...) { - //_asm int 3; -#ifdef DEBUG_POOL_MALLOC - extern void log_pool_stats(Pool& pool); - log_pool_stats(SAPI_info); -#endif - - va_list args; - va_start(args,fmt); +static void die_or_abort(const char* fmt, va_list args, bool write_core) { // log // logging is more important than user @@ -130,8 +163,6 @@ void SAPI::die(const char* fmt, ...) { 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(SAPI_info, "status", "500"); @@ -146,28 +177,44 @@ void SAPI::die(const char* fmt, ...) { // body SAPI::send_body(SAPI_info, body, content_length); -#ifdef WIN32 - //_asm int 3; - // IIS with abort failes to show STDOUT, it just barks "abnormal program termination" - exit(1); + // 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 - // exit & try to produce core dump - abort(); +#if _MSC_VER + _asm int 3; +#endif + abort(); #endif + } + else + exit(1); } -CharPtr SAPI::get_env(SAPI_Info& , const char* name) { - if(char *local=getenv(name)) { - size_t size=strlen(local)+1; - char *heap=new char[size]; - memcpy(heap, local, size); - return CharPtr(heap); - } +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 CharPtr(0); + return 0; } -const char* const *SAPI::environment(SAPI_Info&, Pool&) { +const char* const *SAPI::environment(SAPI_Info&) { #ifdef _MSC_VER extern char **_environ; return _environ; @@ -205,8 +252,8 @@ void SAPI::send_header(SAPI_Info& ) { } } -void SAPI::send_body(SAPI_Info& , const void *buf, size_t size) { - stdout_write(buf, size); +size_t SAPI::send_body(SAPI_Info& , const void *buf, size_t size) { + return stdout_write(buf, size); } // @@ -218,7 +265,7 @@ static void full_file_spec(const char* f || file_name[0] && file_name[1]==':' #endif ) - strncpy(buf, file_name, buf_size); + strncpy(buf, file_name, buf_size); else { char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING); snprintf(buf, buf_size, "%s/%s", cwd, file_name); @@ -231,11 +278,16 @@ static void full_file_spec(const char* f } static void log_signal(const char* signal_name) { - SAPI::log(SAPI_info, request? "%s received. uri=%s, qs=%s" - :"%s received. no request being processed", - signal_name, - request && request->request_info.uri?request->request_info.uri:"-", - request && request->request_info.query_string?request->request_info.query_string:"-"); + 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 @@ -247,8 +299,52 @@ static void SIGUSR1_handler(int /*sig*/) #ifdef SIGPIPE static void SIGPIPE_handler(int /*sig*/){ log_signal("SIGPIPE"); + execution_canceled=true; if(request) - request->interrupt(); + 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 @@ -259,37 +355,37 @@ main workhorse 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 */ -static void real_parser_handler( - const char* filespec_to_process, - const char* request_method, bool header_only) { +static void real_parser_handler(const char* filespec_to_process, + const char* request_method, bool header_only) +{ // init socks - pa_init_socks(); - + pa_socks_init(); + // init global variables pa_globals_init(); - // request pool, must be different ptr from global [used in VStateless_class.add_method] - Pool request_pool; - if(!filespec_to_process || !*filespec_to_process) - SAPI::die("Parser/%s", PARSER_VERSION); + SAPI::die("Parser/%s" +#ifdef PA_DEBUG_CGI_ENTRY_EXIT + " with entry/exit tracing" +#endif + , PARSER_VERSION); // Request info - Request_info request_info; + Request_info request_info; memset(&request_info, 0, sizeof(request_info)); char document_root_buf[MAX_STRING]; if(cgi) { - if(CharPtr env_document_root=SAPI::get_env(SAPI_info, "DOCUMENT_ROOT")) + if(const char* env_document_root=getenv("DOCUMENT_ROOT")) request_info.document_root=env_document_root; - else if(const char* path_info=SAPI::get_env(SAPI_info, "PATH_INFO")) { + 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", - Exception::undefined_source, + 0, "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)"); } else { full_file_spec("", document_root_buf, sizeof(document_root_buf)); @@ -297,23 +393,27 @@ static void real_parser_handler( } request_info.path_translated=filespec_to_process; request_info.method=request_method ? request_method : "GET"; - CharPtr query_string=SAPI::get_env(SAPI_info, "QUERY_STRING"); + 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=SAPI::get_env(SAPI_info, "PATH_INFO"); + const char* path_info=getenv("PATH_INFO"); if(!path_info) SAPI::die("CGI: illegal call (missing PATH_INFO)"); - const char* script_name=SAPI::get_env(SAPI_info, "SCRIPT_NAME"); + const char* script_name=getenv("SCRIPT_NAME"); if(!script_name) SAPI::die("CGI: illegal call (missing SCRIPT_NAME)"); - const char* env_request_uri=SAPI::get_env(SAPI_info, "REQUEST_URI"); + 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(request_pool) char[ + char* reconstructed_uri=new(PointerFreeGC) char[ strlen(path_info)+1/*'?'*/+ strlen(query_string)+1/*0*/]; strcpy(reconstructed_uri, path_info); @@ -362,22 +462,31 @@ static void real_parser_handler( } else request_info.uri=""; - request_info.content_type=SAPI::get_env(SAPI_info, "CONTENT_TYPE"); - const char* content_length=SAPI::get_env(SAPI_info, "CONTENT_LENGTH"); + 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=SAPI::get_env(SAPI_info, "HTTP_COOKIE"); + 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(request_pool, SAPI_info, - 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*/ - , + 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 @@ -416,82 +525,70 @@ static void real_parser_handler( // no request [prevent signal handlers from accessing invalid memory] ::request=0; - + + // finalize global variables + pa_globals_done(); + // - pa_done_socks(); - -#ifdef DEBUG_POOL_MALLOC - extern void log_pool_stats(Pool& pool); - log_pool_stats(request_pool); -#endif + pa_socks_done(); } -#if _MSC_VER && !defined(_DEBUG) -# define PA_USE___TRY -struct Parser_executed { - bool with_system_exception; - LPEXCEPTION_POINTERS system_exception; -}; -#endif - -static -#ifdef PA_USE___TRY -Parser_executed -#else -void -#endif -call_real_parser_handler__do_SEH_return_it( - const char* filespec_to_process, - const char* request_method, bool header_only) { -#ifdef PA_USE___TRY - Parser_executed result={false}; - __try { -#endif +#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); - -#ifdef PA_USE___TRY - } __except ( - (result.system_exception=GetExceptionInformation()), - EXCEPTION_EXECUTE_HANDLER) { - //_asm int 3; - result.with_system_exception=true; + } catch(const Exception& e) { + return e; } - return result; -#endif + + 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; -static void call_real_parser_handler__do_SEH( - const char* filespec_to_process, - const char* request_method, bool header_only) { -#ifdef PA_USE___TRY - Parser_executed executed= -#endif - call_real_parser_handler__do_SEH_return_it(filespec_to_process, + __try { + parser_exception=call_real_parser_handler__do_PEH_return_it( + filespec_to_process, request_method, header_only); - -#ifdef PA_USE___TRY - if(executed.with_system_exception) - if(executed.system_exception) - if(_EXCEPTION_RECORD *er=executed.system_exception->ExceptionRecord) - throw Exception(Exception::undefined_type, - Exception::undefined_source, - "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress); + } __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(Exception::undefined_type, - Exception::undefined_source, - "Exception "); + throw Exception("system", + 0, + ""); else - throw Exception(Exception::undefined_type, - Exception::undefined_source, - "Exception "); -#endif + throw Exception("system", + 0, + ""); + } + + if(parser_exception) + throw Exception(parser_exception); } +#endif static void usage(const char* program) { printf( - "Parser/%s Copyright(c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)\n" + "Parser/%s\n" + "Copyright(c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)\n" "Author: Alexandr Petrosian (http://paf.design.ru)\n" "\n" "Usage: %s [options] file\n" @@ -507,6 +604,30 @@ static void usage(const char* program) { } int main(int argc, char *argv[]) { +#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 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"); @@ -524,9 +645,8 @@ int main(int argc, char *argv[]) { #endif #ifdef _DEBUG - //_crtBreakAlloc=4042; + //_crtBreakAlloc=46; #endif - //_asm int 3; argv0=argv[0]; umask(2); @@ -536,8 +656,7 @@ int main(int argc, char *argv[]) { getenv("SERVER_SOFTWARE") || getenv("SERVER_NAME") || getenv("GATEWAY_INTERFACE") || - getenv("REQUEST_METHOD") || - getenv("MAKE_TEST"); + getenv("REQUEST_METHOD"); char *raw_filespec_to_process; if(cgi) { @@ -585,21 +704,19 @@ int main(int argc, char *argv[]) { setmode(fileno(stderr), _O_BINARY); #endif -#if _MSC_VER - -#ifdef _DEBUG +#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; + tmpFlag |= _CRTDBG_LEAK_CHECK_DF; // Set flag to the new value _CrtSetDbgFlag( tmpFlag ); -// _CrtSetBreakAlloc(471); - -#endif +// _CrtSetBreakAlloc(61); + _CrtSetReportMode( _CRT_WARN, _CRTDBG_MODE_FILE ); + _CrtSetReportFile( _CRT_WARN, _CRTDBG_FILE_STDERR ); #endif char filespec_to_process[MAX_STRING]; @@ -609,17 +726,44 @@ int main(int argc, char *argv[]) { bool header_only=request_method && strcasecmp(request_method, "HEAD")==0; try { // global try - call_real_parser_handler__do_SEH( +#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); - SAPI::die("exception in request exception handler: %s", e.comment()); + // unsuccessful finish } -// _asm int 3; +#ifdef PA_DEBUG_CGI_ENTRY_EXIT + log("main: successful return"); +#endif return 0; }