--- parser3/src/targets/cgi/parser3.C 2004/03/23 09:42:14 1.224 +++ parser3/src/targets/cgi/parser3.C 2007/08/17 08:16:11 1.243 @@ -1,11 +1,11 @@ /** @file Parser: scripting and CGI main. - Copyright(c) 2001-2004 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 * const IDENT_PARSER3_C="$Date: 2004/03/23 09:42:14 $"; +static const char * const IDENT_PARSER3_C="$Date: 2007/08/17 08:16:11 $"; #include "pa_config_includes.h" @@ -27,12 +27,22 @@ static const char * const IDENT_PARSER3_ # include #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 @@ -57,7 +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(!( @@ -84,23 +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, ...) { @@ -157,14 +197,14 @@ void SAPI::die(const char* fmt, ...) { va_list args; va_start(args, fmt); die_or_abort(fmt, args, false/*write core?*/); - va_end(args); +//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?*/); - va_end(args); +//unreachable anyway va_end(args); } char* SAPI::get_env(SAPI_Info& , const char* name) { @@ -198,7 +238,7 @@ size_t SAPI::read_post(SAPI_Info& , char } void SAPI::add_header_attribute(SAPI_Info& , const char* dont_store_key, const char* dont_store_value) { - if(cgi) + if( cgi && (!request || !request->console.was_used()) ) printf("%s: %s\n", dont_store_key, dont_store_value); } @@ -212,8 +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); } // @@ -257,14 +297,64 @@ static void SIGUSR1_handler(int /*sig*/) #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 @@ -274,15 +364,20 @@ main workhorse wich is tested but seems slow. */ static void real_parser_handler(const char* filespec_to_process, - const char* request_method, bool header_only) { + const char* request_method, bool header_only) +{ // init socks - pa_init_socks(); - + pa_socks_init(); + // init global variables pa_globals_init(); 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; memset(&request_info, 0, sizeof(request_info)); @@ -296,7 +391,7 @@ static void real_parser_handler(const ch 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", + throw Exception(PARSER_RUNTIME, 0, "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)"); } else { @@ -305,7 +400,11 @@ static void real_parser_handler(const ch } request_info.path_translated=filespec_to_process; request_info.method=request_method ? request_method : "GET"; - const char* query_string=getenv("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 @@ -381,6 +480,17 @@ static void real_parser_handler(const ch 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, @@ -422,76 +532,70 @@ static void real_parser_handler(const ch // no request [prevent signal handlers from accessing invalid memory] ::request=0; - + + // finalize global variables + pa_globals_done(); + // - pa_done_socks(); + 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) { - 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(0, + } __except ( + (system_exception=GetExceptionInformation()), + EXCEPTION_EXECUTE_HANDLER) + { + + if(system_exception) + if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord) + throw Exception("system", 0, - "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress); + "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress); else - throw Exception(0, + throw Exception("system", 0, - "Exception "); + ""); else - throw Exception(0, + throw Exception("system", 0, - "Exception "); -#endif + ""); + } + + if(parser_exception) + throw Exception(parser_exception); } +#endif static void usage(const char* program) { printf( - "Parser/%s Copyright(c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com)\n" + "Parser/%s\n" + "Copyright(c) 2001-2007 ArtLebedev Group (http://www.artlebedev.com)\n" "Author: Alexandr Petrosian (http://paf.design.ru)\n" "\n" "Usage: %s [options] file\n" @@ -507,6 +611,9 @@ 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; @@ -626,17 +733,20 @@ 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 - const char* body=e.comment(); char buf[MAX_STRING]; - snprintf(buf, MAX_STRING, "exception in request exception handler: %s", - body); + snprintf(buf, MAX_STRING, "Unhandled exception %s", + e.comment()); // log it SAPI::log(SAPI_info, "%s", buf); @@ -659,5 +769,8 @@ int main(int argc, char *argv[]) { // unsuccessful finish } +#ifdef PA_DEBUG_CGI_ENTRY_EXIT + log("main: successful return"); +#endif return 0; }