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| version 1.1, 2001/03/22 15:30:49 | version 1.16, 2001/03/24 14:31:02 |
|---|---|
| Line 1 | Line 1 |
| #ifndef _MSC_VER | #ifndef _MSC_VER |
| # error compile ISAPI module with MSVC | # error compile ISAPI module with MSVC [no urge for now to make it autoconf-ed (PAF)] |
| #endif | #endif |
| #include <windows.h> | #include <windows.h> |
| #include <process.h> | #include <process.h> |
| #include <httpext.h> | #include <httpext.h> |
| #include <httpfilt.h> | |
| #include <httpext.h> | |
| #include "pa_sapi.h" | |
| #include "pa_globals.h" | #include "pa_globals.h" |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_version.h" | #include "pa_version.h" |
| #include "pool_storage.h" | |
| #include "nt_log_events.h" | |
| #define MAX_STATUS_LENGTH sizeof("xxxx LONGEST STATUS DESCRIPTION") | #define MAX_STATUS_LENGTH sizeof("xxxx LONGEST STATUS DESCRIPTION") |
| #define ISAPI_SERVER_VAR_BUF_SIZE 0x400 | |
| //@{ | //@{ |
| /// service func decl | /// SAPI funcs decl |
| static const char *get_env(Pool& pool, const char *name) { | struct SAPI_func_context { |
| LPEXTENSION_CONTROL_BLOCK lpECB=static_cast<LPEXTENSION_CONTROL_BLOCK>(pool.context()); | LPEXTENSION_CONTROL_BLOCK lpECB; |
| String *header; | |
| DWORD http_response_code; | |
| }; | |
| const char *SAPI::get_env(Pool& pool, const char *name) { | |
| SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context()); | |
| char *variable_buf=(char *)pool.malloc(MAX_STRING); | char *variable_buf=(char *)pool.malloc(MAX_STRING); |
| DWORD variable_len = MAX_STRING-1; | DWORD variable_len = MAX_STRING-1; |
| if(lpECB->GetServerVariable(lpECB->ConnID, const_cast<char *>(name), | if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name), |
| variable_buf, &variable_len)) { | |
| variable_buf[variable_len]=0; | |
| return variable_buf; | |
| } | |
| variable_buf=(char *)pool.malloc(variable_len+1); | |
| if(lpECB->GetServerVariable(lpECB->ConnID, const_cast<char *>(name), | |
| variable_buf, &variable_len)) { | variable_buf, &variable_len)) { |
| variable_buf[variable_len]=0; | variable_buf[variable_len]=0; |
| return variable_buf; | return variable_buf; |
| } else if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) { | |
| variable_buf=(char *)pool.malloc(variable_len+1); | |
| if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name), | |
| variable_buf, &variable_len)) { | |
| variable_buf[variable_len]=0; | |
| return variable_buf; | |
| } | |
| } | } |
| return 0; | return 0; |
| } | } |
| static uint read_post(Pool& pool, char *buf, uint max_bytes) { | uint SAPI::read_post(Pool& pool, char *buf, uint max_bytes) { |
| LPEXTENSION_CONTROL_BLOCK lpECB=static_cast<LPEXTENSION_CONTROL_BLOCK>(pool.context()); | SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context()); |
| // todo: timeout | |
| DWORD read_from_buf=0; | DWORD read_from_buf=0; |
| DWORD read_from_input=0; | DWORD read_from_input=0; |
| DWORD total_read=0; | DWORD total_read=0; |
| read_from_buf=min(lpECB->cbAvailable, max_bytes); | read_from_buf=min(ctx.lpECB->cbAvailable, max_bytes); |
| memcpy(buf, lpECB->lpbData, read_from_buf); | memcpy(buf, ctx.lpECB->lpbData, read_from_buf); |
| total_read+=read_from_buf; | total_read+=read_from_buf; |
| if(read_from_buf<max_bytes && | if(read_from_buf<max_bytes && |
| read_from_buf<lpECB->cbTotalBytes) { | read_from_buf<ctx.lpECB->cbTotalBytes) { |
| DWORD cbRead=0, cbSize; | DWORD cbRead=0, cbSize; |
| read_from_input=min(max_bytes-read_from_buf, lpECB->cbTotalBytes-read_from_buf); | read_from_input=min(max_bytes-read_from_buf, |
| ctx.lpECB->cbTotalBytes-read_from_buf); | |
| while(cbRead < read_from_input) { | while(cbRead < read_from_input) { |
| cbSize=read_from_input - cbRead; | cbSize=read_from_input - cbRead; |
| if(!lpECB->ReadClient(lpECB->ConnID, buf+read_from_buf+cbRead, &cbSize) || | if(!ctx.lpECB->ReadClient(ctx.lpECB->ConnID, |
| buf+read_from_buf+cbRead, &cbSize) || | |
| cbSize==0) | cbSize==0) |
| break; | break; |
| cbRead+=cbSize; | cbRead+=cbSize; |
| Line 70 static uint read_post(Pool& pool, char * | Line 78 static uint read_post(Pool& pool, char * |
| return total_read; | return total_read; |
| } | } |
| static void add_header_attribute(Pool& pool, const char *key, const char *value) { | void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) { |
| LPEXTENSION_CONTROL_BLOCK lpECB=static_cast<LPEXTENSION_CONTROL_BLOCK>(pool.context()); | SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context()); |
| String *header=static_cast<String *>(pool.tag()); | |
| if(!header) | |
| pool.set_tag(header=new(pool) String(pool)); | |
| header->APPEND_CONST(key); | |
| header->APPEND_CONST(": "); | |
| header->APPEND_CONST(value); | |
| header->APPEND_CONST("\r\n"); | |
| } | |
| static void send_header(Pool& pool) { | if(strcasecmp(key, "location")==0) |
| LPEXTENSION_CONTROL_BLOCK lpECB=static_cast<LPEXTENSION_CONTROL_BLOCK>(pool.context()); | ctx.http_response_code=302; |
| String *header=static_cast<String *>(pool.tag()); | |
| if(!header) // never | |
| return; | |
| header->APPEND_CONST("\r\n"); | if(strcasecmp(key, "status")==0) |
| HSE_SEND_HEADER_EX_INFO header_info; | 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("\n"); | |
| } | |
| } | |
| int http_response_code=200; // todo: dig from headers | /// @todo intelligent cache-control |
| void SAPI::send_header(Pool& pool) { | |
| SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context()); | |
| ctx.header->APPEND_CONST( | |
| "expires: Fri, 23 Mar 2001 09:32:23 GMT\n" | |
| "\n"); | |
| HSE_SEND_HEADER_EX_INFO header_info; | |
| char status_buf[MAX_STATUS_LENGTH]; | char status_buf[MAX_STATUS_LENGTH]; |
| switch(http_response_code) { | switch(ctx.http_response_code) { |
| case 200: | case 200: |
| header_info.pszStatus="200 OK"; | header_info.pszStatus="200 OK"; |
| break; | break; |
| case 302: | case 302: |
| header_info.pszStatus="302 Moved Temporarily"; | header_info.pszStatus="302 Moved Temporarily"; |
| break; | break; |
| case 401: | case 401:// useless untill parser auth mech |
| header_info.pszStatus="401 Authorization Required"; | header_info.pszStatus="401 Authorization Required"; |
| break; | break; |
| default: | default: |
| snprintf(status_buf, MAX_STATUS_LENGTH, "%d Undescribed", http_response_code); | snprintf(status_buf, MAX_STATUS_LENGTH, |
| "%d Undescribed", ctx.http_response_code); | |
| header_info.pszStatus=status_buf; | header_info.pszStatus=status_buf; |
| break; | break; |
| } | } |
| header_info.cchStatus=strlen(header_info.pszStatus); | header_info.cchStatus=strlen(header_info.pszStatus); |
| header_info.pszHeader=header->cstr(); | header_info.pszHeader=ctx.header->cstr(); |
| header_info.cchHeader=header->size(); | header_info.cchHeader=ctx.header->size(); |
| header_info.fKeepConn=true; | |
| lpECB->dwHttpStatusCode=http_response_code; | ctx.lpECB->dwHttpStatusCode=ctx.http_response_code; |
| lpECB->ServerSupportFunction(lpECB->ConnID, HSE_REQ_SEND_RESPONSE_HEADER_EX, | ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID, |
| &header_info, NULL, NULL); | HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL); |
| } | } |
| static void send_body(Pool& pool, const char *buf, size_t size) { | void SAPI::send_body(Pool& pool, const char *buf, size_t size) { |
| LPEXTENSION_CONTROL_BLOCK lpECB=static_cast<LPEXTENSION_CONTROL_BLOCK>(pool.context()); | SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context()); |
| DWORD num_bytes=size; | DWORD num_bytes=size; |
| lpECB->WriteClient(lpECB->ConnID, const_cast<char *>(buf), &num_bytes, HSE_IO_SYNC); | ctx.lpECB->WriteClient(ctx.lpECB->ConnID, |
| const_cast<char *>(buf), &num_bytes, HSE_IO_SYNC); | |
| } | } |
| //@} | |
| /// Service funcs | /// goes to 'cs-uri-query' log file field. webmaster: switch it ON[default OFF]. |
| Service_funcs service_funcs={ | void SAPI::log(Pool& pool, const char *fmt, ...) { |
| get_env, | SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context()); |
| read_post, | |
| add_header_attribute, | va_list args; |
| send_header, | va_start(args,fmt); |
| send_body | char buf[MAX_STRING]; |
| }; | 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, | |
| HSE_APPEND_LOG_PARAMETER, buf, &size, 0); | |
| } | |
| //@} | |
| // | // |
| static void parser_init() { | static bool parser_init() { |
| static bool globals_inited=false; | static bool globals_inited=false; |
| if(globals_inited) | if(globals_inited) |
| return; | return true; |
| globals_inited=true; | globals_inited=true; |
| static Pool pool; // global pool | static Pool pool(0); // global pool |
| PTRY { | PTRY { |
| // init global variables | // init global variables |
| globals_init(pool); | pa_globals_init(pool); |
| //... | // successful finish |
| return true; | |
| } PCATCH(e) { // global problem | } PCATCH(e) { // global problem |
| const char *body=e.comment(); | //const char *body=e.comment(); |
| // TODO: somehow report that error | |
| // unsuccessful finish | |
| return false; | |
| } | } |
| PEND_CATCH | PEND_CATCH |
| } | } |
| Line 160 static void parser_init() { | Line 182 static void parser_init() { |
| /// ISAPI // | /// ISAPI // |
| BOOL WINAPI GetExtensionVersion(HSE_VERSION_INFO *pVer) { | BOOL WINAPI GetExtensionVersion(HSE_VERSION_INFO *pVer) { |
| pVer->dwExtensionVersion = HSE_VERSION; | 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); |
| return TRUE; | return parser_init(); |
| } | } |
| static BOOL exception_handler(LPEXCEPTION_POINTERS *e,LPEXCEPTION_POINTERS ep) { | /** |
| *e=ep; | ISAPI // main workhorse |
| return TRUE; | |
| } | |
| /// ISAPI // main workhorse | @todo |
| IIS: remove trailing default-document[index.html] from $request.uri. | |
| to do that we need to consult metabase, | |
| wich is tested&works but seems slow runtime | |
| and not could-be-quickly-implemented if prepared. | |
| */ | |
| DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB) { | DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB) { |
| Pool pool; | Pool_storage pool_storage; |
| pool.set_context(lpECB); | Pool pool(&pool_storage); // no allocations until assigned context [for reporting] |
| SAPI_func_context ctx={ | |
| // TODO r->no_cache=1; | 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! | |
| bool header_only=strcasecmp(lpECB->lpszMethod, "HEAD")==0; | bool header_only=strcasecmp(lpECB->lpszMethod, "HEAD")==0; |
| PTRY { // global try | PTRY { // global try |
| // must be first in PTRY{}PCATCH | ctx.header=new(pool) String(pool); |
| LPEXCEPTION_POINTERS e; | |
| __try { | // Request info |
| Request::Info request_info; | |
| const char *filespec_to_process=lpECB->lpszPathTranslated; | |
| size_t path_translated_buf_size=strlen(lpECB->lpszPathTranslated)+1; | |
| // Request info | char *filespec_to_process=(char *)malloc(path_translated_buf_size); |
| Request::Info request_info; | memcpy(filespec_to_process, lpECB->lpszPathTranslated, path_translated_buf_size); |
| #ifdef WIN32 | |
| const char *document_root=0; // todo: get from somewhere? | back_slashes_to_slashes(filespec_to_process); |
| if(!document_root) { | #endif |
| static char fake_document_root[MAX_STRING]; | |
| strncpy(fake_document_root, filespec_to_process, MAX_STRING); | if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) { |
| rsplit(fake_document_root, '/'); rsplit(fake_document_root, '\\');// strip filename | // IIS |
| document_root=fake_document_root; | size_t len=strlen(filespec_to_process)-strlen(path_info); |
| } | char *buf=(char *)pool.malloc(len+1); |
| request_info.document_root=document_root; | strncpy(buf, filespec_to_process, len); |
| request_info.path_translated=filespec_to_process; | buf[len]=0; |
| request_info.method=lpECB->lpszMethod; | request_info.document_root=buf; |
| request_info.query_string=lpECB->lpszQueryString; | } else |
| request_info.uri=lpECB->lpszPathInfo;//todo: check for ?zzz included? | PTHROW(0, 0, |
| request_info.content_type=lpECB->lpszContentType; | 0, |
| request_info.content_length=lpECB->cbTotalBytes; | "ISAPI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)"); |
| {// cookie | |
| char variable_buf[ISAPI_SERVER_VAR_BUF_SIZE]; | request_info.path_translated=filespec_to_process; |
| DWORD variable_len = ISAPI_SERVER_VAR_BUF_SIZE-1; | request_info.method=lpECB->lpszMethod; |
| request_info.query_string=lpECB->lpszQueryString; | |
| if (lpECB->GetServerVariable(lpECB->ConnID, "HTTP_COOKIE", variable_buf, &variable_len)) { | if(lpECB->lpszQueryString && *lpECB->lpszQueryString) { |
| variable_buf[variable_len]=0; | char *reconstructed_uri=(char *)malloc( |
| request_info.cookie=variable_buf; | strlen(lpECB->lpszPathInfo)+1/*'?'*/+ |
| } else if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) { | strlen(lpECB->lpszQueryString)+1/*0*/); |
| char *tmp_variable_buf=(char *)pool.malloc(variable_len+1); | strcpy(reconstructed_uri, lpECB->lpszPathInfo); |
| strcat(reconstructed_uri, "?"); | |
| if (lpECB->GetServerVariable(lpECB->ConnID, "HTTP_COOKIE", tmp_variable_buf, &variable_len)) { | strcat(reconstructed_uri, lpECB->lpszQueryString); |
| tmp_variable_buf[variable_len] = 0; | request_info.uri=reconstructed_uri; |
| request_info.cookie=tmp_variable_buf; | } else |
| } else { | request_info.uri=lpECB->lpszPathInfo; |
| request_info.cookie=0; | |
| } | request_info.content_type=lpECB->lpszContentType; |
| } | request_info.content_length=lpECB->cbTotalBytes; |
| } | request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE"); |
| // prepare to process request | // prepare to process request |
| Request request(pool, | Request request(pool, |
| request_info, | request_info, |
| String::UL_HTML_TYPO | String::UL_HTML_TYPO |
| ); | ); |
| // some root-controlled location | |
| // some root-controlled location | // c:\windows |
| char *root_auto_path; | // must be dynamic: rethrowing from request.core |
| // c:\windows | // may return 'source' which can be inside of 'root auto.p@exeception' |
| root_auto_path=(char *)pool.malloc(MAX_STRING); | char *root_auto_path=(char *)pool.malloc(MAX_STRING); |
| GetWindowsDirectory(root_auto_path, MAX_STRING); | GetWindowsDirectory(root_auto_path, MAX_STRING); |
| strcat(root_auto_path, "/"); | |
| // process the request | |
| // process the request | request.core( |
| request.core( | root_auto_path, false/*may be abcent*/, // /path/to/admin/auto.p |
| root_auto_path, true, // /path/to/admin/auto.p | 0/*parser_site_auto_path*/, false, // /path/to/site/auto.p |
| 0/*parser_site_auto_path*/, false, // /path/to/site/auto.p | header_only); |
| header_only); | // successful finish |
| } PCATCH(e) { // global problem | |
| // successful finish | // don't allocate anything on pool here: |
| // possible pool' exception not catch-ed now | |
| // must be last in PTRY{}PCATCH | // and there could be out-of-memory exception |
| } __except(exception_handler(&e, GetExceptionInformation())) { | |
| // converting C++ exception into Parser exception | |
| if(_exception_code()==EXCEPTION_STACK_OVERFLOW) | |
| PTHROW(0, 0, | |
| 0, | |
| "Stack overflow"); | |
| else if(_exception_code()==EXCEPTION_ACCESS_VIOLATION) | |
| PTHROW(0, 0, | |
| 0, | |
| "Access violation at %p", | |
| e->ExceptionRecord->ExceptionAddress); | |
| else | |
| PTHROW(0, 0, | |
| 0, | |
| "Exception %#X at %p", | |
| e->ExceptionRecord->ExceptionCode, | |
| e->ExceptionRecord->ExceptionAddress); | |
| } | |
| // no further code here | |
| } PCATCH(e) { // global problem | |
| const char *body=e.comment(); | const char *body=e.comment(); |
| int content_length=strlen(body); | // log it |
| SAPI::log(pool, "exception in request exception handler: %s", body); | |
| // prepare header | // |
| (*service_funcs.add_header_attribute)(pool, "content-type", "text/plain"); | int content_length=strlen(body); |
| char content_length_cstr[MAX_NUMBER]; | |
| snprintf(content_length_cstr, MAX_NUMBER, "%d", content_length); | |
| (*service_funcs.add_header_attribute)(pool, "content-length", | |
| content_length_cstr); | |
| // 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\n" | |
| "content-length: %ul\n" | |
| "expires: Fri, 23 Mar 2001 09:32:23 GMT\n" | |
| "\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 | // send header |
| (*service_funcs.send_header)(pool); | lpECB->dwHttpStatusCode=200; |
| lpECB->ServerSupportFunction(lpECB->ConnID, | |
| HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL); | |
| // send body | // send body |
| if(!header_only) | if(!header_only) |
| (*service_funcs.send_body)(pool, body, content_length); | SAPI::send_body(pool, body, content_length); |
| // unsuccessful finish | // unsuccessful finish |
| _endthread(); | |
| } | } |
| PEND_CATCH | PEND_CATCH |
| return HSE_STATUS_SUCCESS; | return HSE_STATUS_SUCCESS_AND_KEEP_CONN; |
| } | |
| BOOL APIENTRY DllMain(HANDLE hModule, | |
| DWORD ul_reason_for_call, | |
| LPVOID lpReserved | |
| ) { | |
| switch (ul_reason_for_call) { | |
| case DLL_PROCESS_ATTACH: | |
| parser_init(); | |
| break; | |
| case DLL_THREAD_ATTACH: | |
| break; | |
| case DLL_THREAD_DETACH: | |
| break; | |
| case DLL_PROCESS_DETACH: | |
| break; | |
| } | |
| return TRUE; | |
| } | } |