--- parser3/src/targets/isapi/parser3isapi.C 2001/06/28 07:44:17 1.35 +++ parser3/src/targets/isapi/parser3isapi.C 2006/04/09 13:38:47 1.97 @@ -1,101 +1,202 @@ /** @file Parser: IIS extension. - Copyright (c) 2000,2001 ArtLebedev Group (http://www.artlebedev.com) - - Author: Alexander Petrosyan (http://design.ru/paf) + Copyright (c) 2000,2001-2005 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ -static const char *RCSId="$Id: parser3isapi.C,v 1.35 2001/06/28 07:44:17 parser Exp $"; + +static const char * const IDENT_PARSER3ISAPI_C="$Date: 2006/04/09 13:38:47 $"; #ifndef _MSC_VER # error compile ISAPI module with MSVC [no urge for now to make it autoconf-ed (PAF)] #endif -#include -#include - -#include +#include "pa_config_includes.h" #include "pa_sapi.h" #include "pa_globals.h" #include "pa_request.h" #include "pa_version.h" -#include "pool_storage.h" #include "pa_socks.h" +#define WINVER 0x0400 +#include +#include + +#include + +// defines + +#if _MSC_VER && !defined(_DEBUG) +# define PA_SUPPRESS_SYSTEM_EXCEPTION +#endif + + #define MAX_STATUS_LENGTH sizeof("xxxx LONGEST STATUS DESCRIPTION") +// consts + +const char* IIS51vars[]={ + "APPL_MD_PATH", "APPL_PHYSICAL_PATH", + "AUTH_PASSWORD", "AUTH_TYPE", "AUTH_USER", + "CERT_COOKIE", "CERT_FLAGS", "CERT_ISSUER", "CERT_KEYSIZE", "CERT_SECRETKEYSIZE", + "CERT_SERIALNUMBER", "CERT_SERVER_ISSUER", "CERT_SERVER_SUBJECT", "CERT_SUBJECT", + "CONTENT_LENGTH", "CONTENT_TYPE", + "LOGON_USER", + "HTTPS", "HTTPS_KEYSIZE", "HTTPS_SECRETKEYSIZE", "HTTPS_SERVER_ISSUER", "HTTPS_SERVER_SUBJECT", + "INSTANCE_ID", "INSTANCE_META_PATH", + "PATH_INFO", "PATH_TRANSLATED", + "QUERY_STRING", + "REMOTE_ADDR", "REMOTE_HOST", "REMOTE_USER", "REQUEST_METHOD", + "SCRIPT_NAME", + "SERVER_NAME", "SERVER_PORT", "SERVER_PORT_SECURE", "SERVER_PROTOCOL", "SERVER_SOFTWARE", + "URL", +}; +const int IIS51var_count=sizeof(IIS51vars)/sizeof(*IIS51vars); + +// globals + +char argv0[MAX_STRING]=""; + // SAPI -/** +#ifndef DOXYGEN +/* ISAPI SAPI functions receive this context information. - - @see Pool::set_context + see Pool::set_context */ -struct SAPI_func_context { +class SAPI_Info { +public: LPEXTENSION_CONTROL_BLOCK lpECB; String *header; DWORD http_response_code; }; +#endif // goes to 'cs-uri-query' log file field. webmaster: switch it ON[default OFF]. -void SAPI::log(Pool& pool, const char *fmt, ...) { - SAPI_func_context& ctx=*static_cast(pool.context()); - +void SAPI::log(SAPI_Info& SAPI_info, const char* fmt, ...) { va_list args; va_start(args,fmt); char buf[MAX_STRING]; - const char *prefix="PARSER_ERROR:"; + const char* prefix="PARSER_ERROR:"; strcpy(buf, prefix); - DWORD size=vsnprintf(buf+strlen(prefix), MAX_STRING-strlen(prefix), fmt, args); - - ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID, + char *start=buf+strlen(prefix); + DWORD size=vsnprintf(start, MAX_STRING-strlen(prefix), fmt, args); + remove_crlf(start, start+size); + + SAPI_info.lpECB->ServerSupportFunction(SAPI_info.lpECB->ConnID, HSE_APPEND_LOG_PARAMETER, buf, &size, 0); } -const char *SAPI::get_env(Pool& pool, const char *name) { - SAPI_func_context& ctx=*static_cast(pool.context()); +/// @todo event log +static void abort(const char* fmt, va_list args) { + if(FILE *log=fopen("c:\\parser3die.log", "at")) { + vfprintf(log, fmt, args); + fclose(log); + } + // exit & try to produce core dump + abort(); +} +void SAPI::die(const char* fmt, ...) { + va_list args; + va_start(args, fmt); + ::abort(fmt, args); +// va_end(args); +} + +void SAPI::abort(const char* fmt, ...) { + va_list args; + va_start(args, fmt); + ::abort(fmt, args); +// va_end(args); +} - char *variable_buf=(char *)pool.malloc(MAX_STRING); +char* SAPI::get_env(SAPI_Info& SAPI_info, const char* name) { + char *variable_buf=new(PointerFreeGC) char[MAX_STRING]; DWORD variable_len = MAX_STRING-1; - if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast(name), + if(SAPI_info.lpECB->GetServerVariable(SAPI_info.lpECB->ConnID, const_cast(name), variable_buf, &variable_len)) { - variable_buf[variable_len]=0; - return variable_buf; + if(*variable_buf) { // saw returning len=1 && *buf=0 :( + variable_buf[variable_len]=0; + return variable_buf; + } } else if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) { - variable_buf=(char *)pool.malloc(variable_len+1); + variable_buf=new(PointerFreeGC) char[variable_len+1]; - if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast(name), + if(SAPI_info.lpECB->GetServerVariable(SAPI_info.lpECB->ConnID, const_cast(name), variable_buf, &variable_len)) { - variable_buf[variable_len]=0; - return variable_buf; + if(*variable_buf) { + variable_buf[variable_len]=0; + return variable_buf; + } } } return 0; } -size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) { - SAPI_func_context& ctx=*static_cast(pool.context()); +static int grep_char(const char* s, char c) { + int result=0; + if(s) { + while(s=strchr(s, c)) { + s++; // skip found c + result++; + } + } + return result; +} +static const char* mk_env_pair(const char* key, const char* value) { + char *result=new(PointerFreeGC) char[strlen(key)+1/*=*/+strlen(value)+1/*0*/]; + strcpy(result, key); strcat(result, "="); strcat(result, value); + return result; +} +const char* const *SAPI::environment(SAPI_Info& info) { + // we know this buf is writable + char* all_http_vars=SAPI::get_env(info, "ALL_HTTP"); + const int http_var_count=grep_char(all_http_vars, '\n')+1/*\n for theoretical(never saw) this \0*/; + + const char* *result=new(PointerFreeGC) const char*[IIS51var_count+http_var_count+1/*0*/]; + const char* *cur=result; + + // IIS5.1 vars + for(int i=0; icbAvailable, max_bytes); - memcpy(buf, ctx.lpECB->lpbData, read_from_buf); + read_from_buf=min(SAPI_info.lpECB->cbAvailable, max_bytes); + memcpy(buf, SAPI_info.lpECB->lpbData, read_from_buf); total_read+=read_from_buf; if(read_from_bufcbTotalBytes) { + read_from_bufcbTotalBytes) { DWORD cbRead=0, cbSize; read_from_input=min(max_bytes-read_from_buf, - ctx.lpECB->cbTotalBytes-read_from_buf); + SAPI_info.lpECB->cbTotalBytes-read_from_buf); while(cbRead < read_from_input) { cbSize=read_from_input - cbRead; - if(!ctx.lpECB->ReadClient(ctx.lpECB->ConnID, + if(!SAPI_info.lpECB->ReadClient(SAPI_info.lpECB->ConnID, buf+read_from_buf+cbRead, &cbSize) || cbSize==0) break; @@ -106,33 +207,23 @@ size_t SAPI::read_post(Pool& pool, char return total_read; } -void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) { - SAPI_func_context& ctx=*static_cast(pool.context()); - - if(strcasecmp(key, "location")==0) - ctx.http_response_code=302; - - if(strcasecmp(key, "status")==0) - ctx.http_response_code=atoi(value); - else { - ctx.header->APPEND_CONST(key); - ctx.header->APPEND_CONST(": "); - ctx.header->APPEND_CONST(value); - ctx.header->APPEND_CONST("\r\n"); - } +void SAPI::add_header_attribute(SAPI_Info& SAPI_info, + const char* dont_store_key, const char* dont_store_value) { + if(strcasecmp(dont_store_key, "location")==0) + SAPI_info.http_response_code=302; + + if(strcasecmp(dont_store_key, "status")==0) + SAPI_info.http_response_code=atoi(dont_store_value); + else + (*SAPI_info.header) << pa_strdup(dont_store_key) << ": " << pa_strdup(dont_store_value) << "\r\n"; } /// @todo intelligent cache-control -void SAPI::send_header(Pool& pool) { - SAPI_func_context& ctx=*static_cast(pool.context()); - - ctx.header->APPEND_CONST( - "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n" - "\r\n"); +void SAPI::send_header(SAPI_Info& SAPI_info) { HSE_SEND_HEADER_EX_INFO header_info; char status_buf[MAX_STATUS_LENGTH]; - switch(ctx.http_response_code) { + switch(SAPI_info.http_response_code) { case 200: header_info.pszStatus="200 OK"; break; @@ -144,30 +235,30 @@ void SAPI::send_header(Pool& pool) { break; default: snprintf(status_buf, MAX_STATUS_LENGTH, - "%d Undescribed", ctx.http_response_code); + "%d Undescribed", SAPI_info.http_response_code); header_info.pszStatus=status_buf; break; } header_info.cchStatus=strlen(header_info.pszStatus); - header_info.pszHeader=ctx.header->cstr(); - header_info.cchHeader=ctx.header->size(); + *SAPI_info.header << "\r\n"; // ISAPI v<5 did quite well without it + header_info.pszHeader=SAPI_info.header->cstr(); + header_info.cchHeader=SAPI_info.header->length(); header_info.fKeepConn=true; - ctx.lpECB->dwHttpStatusCode=ctx.http_response_code; + SAPI_info.lpECB->dwHttpStatusCode=SAPI_info.http_response_code; - ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID, + SAPI_info.lpECB->ServerSupportFunction(SAPI_info.lpECB->ConnID, HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL); } -void SAPI::send_body(Pool& pool, const void *buf, size_t size) { - SAPI_func_context& ctx=*static_cast(pool.context()); - +size_t SAPI::send_body(SAPI_Info& SAPI_info, const void *buf, size_t size) { DWORD num_bytes=size; - ctx.lpECB->WriteClient(ctx.lpECB->ConnID, - const_cast(buf), &num_bytes, HSE_IO_SYNC); + if(!SAPI_info.lpECB->WriteClient(SAPI_info.lpECB->ConnID, + const_cast(buf), &num_bytes, HSE_IO_SYNC)) + return 0; + return (size_t)num_bytes; } -// static bool parser_init() { static bool globals_inited=false; @@ -175,33 +266,46 @@ static bool parser_init() { return true; globals_inited=true; - static Pool pool(0); // global pool - PTRY { + try { // init socks - init_socks(pool); - - // init global classes - init_methoded_array(pool); + pa_socks_init(); // init global variables - pa_globals_init(pool); - + pa_globals_init(); + // successful finish return true; - } PCATCH(e) { // global problem - //const char *body=e.comment(); + } catch(.../*const Exception& e*/) { // global problem + //const char* body=e.comment(); // unsuccessful finish return false; } - PEND_CATCH +} + +static void parser_done() { + // finalize global variables + pa_globals_done(); + + // + pa_socks_done(); } /// ISAPI // BOOL WINAPI GetExtensionVersion(HSE_VERSION_INFO *pVer) { pVer->dwExtensionVersion = HSE_VERSION; - strncpy(pVer->lpszExtensionDesc, "Parser "PARSER_VERSION, HSE_MAX_EXT_DLL_NAME_LEN); + strncpy(pVer->lpszExtensionDesc, "Parser "PARSER_VERSION, HSE_MAX_EXT_DLL_NAME_LEN-1); + pVer->lpszExtensionDesc[HSE_MAX_EXT_DLL_NAME_LEN-1]=0; return parser_init(); } +// dwFlags & HSE_TERM_MUST_UNLOAD means we can't return false +BOOL WINAPI TerminateExtension( + DWORD /*dwFlags*/ +) +{ + parser_done(); + + return TRUE; +} /** ISAPI // main workhorse @@ -211,89 +315,160 @@ BOOL WINAPI GetExtensionVersion(HSE_VERS to do that we need to consult metabase, wich is tested&works but seems slow runtime and not could-be-quickly-implemented if prepared. + @test + PARSER_VERSION from outside */ -DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB) { - Pool_storage pool_storage; - Pool pool(&pool_storage); // no allocations until assigned context [for reporting] - SAPI_func_context ctx={ - lpECB, - 0, // filling later: so that if there would be error pool would have ctx - 200 - }; - pool.set_context(&ctx);// no allocations before this line! +void real_parser_handler(SAPI_Info& SAPI_info, bool header_only) { + // collect garbage from prev request +#ifndef PA_DEBUG_DISABLE_GC + { + int saved=GC_dont_gc; + GC_dont_gc=0; + GC_gcollect(); + GC_dont_gc=saved; + } +#endif - bool header_only=strcasecmp(lpECB->lpszMethod, "HEAD")==0; - PTRY { // global try - ctx.header=new(pool) String(pool); - - // Request info - Request::Info request_info; + SAPI_info.header=new String; + LPEXTENSION_CONTROL_BLOCK lpECB=SAPI_info.lpECB; + + // Request info + Request_info request_info; memset(&request_info, 0, sizeof(request_info)); - size_t path_translated_buf_size=strlen(lpECB->lpszPathTranslated)+1; - char *filespec_to_process=(char *)malloc(path_translated_buf_size); - memcpy(filespec_to_process, lpECB->lpszPathTranslated, path_translated_buf_size); + size_t path_translated_buf_size=strlen(lpECB->lpszPathTranslated)+1; + char *filespec_to_process=pa_strdup(lpECB->lpszPathTranslated, path_translated_buf_size); #ifdef WIN32 - back_slashes_to_slashes(filespec_to_process); + back_slashes_to_slashes(filespec_to_process); #endif - 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); - strncpy(buf, filespec_to_process, len); - buf[len]=0; - request_info.document_root=buf; - } else - PTHROW(0, 0, - 0, - "ISAPI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)"); - - request_info.path_translated=filespec_to_process; - request_info.method=lpECB->lpszMethod; - request_info.query_string=lpECB->lpszQueryString; - if(lpECB->lpszQueryString && *lpECB->lpszQueryString) { - char *reconstructed_uri=(char *)malloc( - strlen(lpECB->lpszPathInfo)+1/*'?'*/+ - strlen(lpECB->lpszQueryString)+1/*0*/); - strcpy(reconstructed_uri, lpECB->lpszPathInfo); - strcat(reconstructed_uri, "?"); - strcat(reconstructed_uri, lpECB->lpszQueryString); - request_info.uri=reconstructed_uri; - } else - request_info.uri=lpECB->lpszPathInfo; - - request_info.content_type=lpECB->lpszContentType; - request_info.content_length=lpECB->cbTotalBytes; - request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE"); - request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT"); + if(const char* path_info=SAPI::get_env(SAPI_info, "PATH_INFO")) { + // IIS + size_t len=strlen(filespec_to_process)-strlen(path_info); + char *buf=new(PointerFreeGC) char[len+1]; + strncpy(buf, filespec_to_process, len); buf[len]=0; + request_info.document_root=buf; + } else + throw Exception("parser.runtime", + 0, + "ISAPI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)"); + + request_info.path_translated=filespec_to_process; + request_info.method=lpECB->lpszMethod; + request_info.query_string=lpECB->lpszQueryString; + if(lpECB->lpszQueryString && *lpECB->lpszQueryString) { + char *reconstructed_uri=new(PointerFreeGC) char[ + strlen(lpECB->lpszPathInfo)+1/*'?'*/+ + strlen(lpECB->lpszQueryString)+1/*0*/]; + strcpy(reconstructed_uri, lpECB->lpszPathInfo); + strcat(reconstructed_uri, "?"); + strcat(reconstructed_uri, lpECB->lpszQueryString); + request_info.uri=reconstructed_uri; + } else + request_info.uri=lpECB->lpszPathInfo; + + request_info.content_type=lpECB->lpszContentType; + request_info.content_length=lpECB->cbTotalBytes; + request_info.cookie=SAPI::get_env(SAPI_info, "HTTP_COOKIE"); + request_info.mail_received=false; + + // prepare to process request + Request request(SAPI_info, + request_info, + String::Language(String::L_HTML|String::L_OPTIMIZE_BIT), + true /* status_allowed */); + + // beside by binary + static 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 + beside_binary_path[0]='.'; beside_binary_path[1]=0; + } + char config_filespec[MAX_STRING]; + snprintf(config_filespec, MAX_STRING, + "%s/%s", + beside_binary_path, AUTO_FILE_NAME); + bool fail_on_config_read_problem=entry_exists(config_filespec); + + // process the request + request.core( + config_filespec, fail_on_config_read_problem, // /path/to/first/auto.p + header_only); +} - - // prepare to process request - Request request(pool, - request_info, - String::UL_USER_HTML - ); - - // some root-controlled location - // c:\windows - // must be dynamic: rethrowing from request.core - // may return 'source' which can be inside of 'root auto.p@exeception' - char *root_auto_path=(char *)pool.malloc(MAX_STRING); - GetWindowsDirectory(root_auto_path, MAX_STRING); - - // process the request - request.core( - root_auto_path, false/*may be abcent*/, // /path/to/admin/auto.p - 0/*parser_site_auto_path*/, false, // /path/to/site/auto.p - header_only); +#ifdef PA_SUPPRESS_SYSTEM_EXCEPTION +static const Exception +call_real_parser_handler__do_PEH_return_it( + SAPI_Info& SAPI_info, bool header_only) +{ + try { + real_parser_handler(SAPI_info, header_only); + } catch(const Exception& e) { + return e; + } + + return Exception(); +} +static void call_real_parser_handler__supress_system_exception( + SAPI_Info& SAPI_info, bool header_only) +{ + Exception parser_exception; + LPEXCEPTION_POINTERS system_exception=0; + + __try { + parser_exception=call_real_parser_handler__do_PEH_return_it( + SAPI_info, 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, + ""); + else + throw Exception("system", + 0, + ""); + } + + if(parser_exception) + throw Exception(parser_exception); +} +#endif + +DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB) { + //_asm int 3; + SAPI_Info SAPI_info={ + lpECB, + 0, // filling later: so that if there would be error pool would have SAPI_info + 200 // default http_response_code [lpECB->dwHttpStatusCode seems to be always 0, even on 404 redirect to /404.html] + }; + + bool header_only=strcasecmp(lpECB->lpszMethod, "HEAD")==0; + try { // global try +#ifdef PA_SUPPRESS_SYSTEM_EXCEPTION + call_real_parser_handler__supress_system_exception( +#else + real_parser_handler( +#endif + SAPI_info, header_only); // successful finish - } PCATCH(e) { // global problem + } 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(); + const char* body=e.comment(); // log it - SAPI::log(pool, "exception in request exception handler: %s", body); + SAPI::log(SAPI_info, "exception in request exception handler: %s", body); // int content_length=strlen(body); @@ -302,8 +477,8 @@ DWORD WINAPI HttpExtensionProc(LPEXTENSI char header_buf[MAX_STRING]; int header_len=snprintf(header_buf, MAX_STRING, "content-type: text/plain\r\n" - "content-length: %lu\r\n" - "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n" + "content-length: %u\r\n" +// "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n" "\r\n", content_length); @@ -321,11 +496,55 @@ DWORD WINAPI HttpExtensionProc(LPEXTENSI // send body if(!header_only) - SAPI::send_body(pool, body, content_length); + SAPI::send_body(SAPI_info, body, content_length); // unsuccessful finish } - PEND_CATCH - +/* + const char* body="test"; + + // + int content_length=strlen(body); + + // prepare header // not using SAPI func wich allocates on pool + char header_buf[MAX_STRING]; + int header_len=snprintf(header_buf, MAX_STRING, + "content-type: text/plain\r\n" + "content-length: %u\r\n" + "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n" + "\r\n", + content_length); + HSE_SEND_HEADER_EX_INFO header_info; + header_info.pszStatus="200 OK"; + header_info.cchStatus=strlen(header_info.pszStatus); + header_info.pszHeader=header_buf; + header_info.cchHeader=header_len; + header_info.fKeepConn=true; + + // send header + lpECB->dwHttpStatusCode=200; + lpECB->ServerSupportFunction(lpECB->ConnID, + HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL); + + // send body + DWORD num_bytes=content_length; + lpECB->WriteClient(lpECB->ConnID, + (void *)body, &num_bytes, HSE_IO_SYNC); +*/ return HSE_STATUS_SUCCESS_AND_KEEP_CONN; } + +BOOL WINAPI DllMain( + HINSTANCE hinstDLL, // handle to the DLL module + DWORD /*fdwReason*/, // reason for calling function + LPVOID /*lpvReserved*/ // reserved + ) { + + GetModuleFileName( + hinstDLL, // handle to module + argv0, // file name of module + sizeof(argv0) // size of buffer + ); + + return TRUE; +} \ No newline at end of file