Annotation of parser3/src/targets/isapi/parser3isapi.C, revision 1.115
1.29 paf 1: /** @file
2: Parser: IIS extension.
3:
1.109 moko 4: Copyright (c) 2000-2017 Art. Lebedev Studio (http://www.artlebedev.com)
1.63 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.77 paf 6: */
1.29 paf 7:
1.115 ! moko 8: volatile const char * IDENT_PARSER3ISAPI_C="$Id: parser3isapi.C,v 1.114 2020/08/13 11:44:21 moko Exp $";
1.29 paf 9:
1.1 paf 10: #ifndef _MSC_VER
1.10 paf 11: # error compile ISAPI module with MSVC [no urge for now to make it autoconf-ed (PAF)]
1.1 paf 12: #endif
1.43 parser 13:
14: #include "pa_config_includes.h"
1.1 paf 15:
1.9 paf 16: #include "pa_sapi.h"
1.1 paf 17: #include "pa_globals.h"
18: #include "pa_request.h"
19: #include "pa_version.h"
20:
1.64 paf 21: #include <windows.h>
22: #include <process.h>
23:
24: #include <httpext.h>
1.51 parser 25:
1.92 paf 26: // defines
27:
1.110 moko 28: #if defined(_MSC_VER) && !defined(_DEBUG)
1.92 paf 29: # define PA_SUPPRESS_SYSTEM_EXCEPTION
30: #endif
31:
32:
1.1 paf 33: #define MAX_STATUS_LENGTH sizeof("xxxx LONGEST STATUS DESCRIPTION")
1.44 parser 34:
35: // consts
1.1 paf 36:
1.83 paf 37: const char* IIS51vars[]={
1.73 paf 38: "APPL_MD_PATH", "APPL_PHYSICAL_PATH",
39: "AUTH_PASSWORD", "AUTH_TYPE", "AUTH_USER",
40: "CERT_COOKIE", "CERT_FLAGS", "CERT_ISSUER", "CERT_KEYSIZE", "CERT_SECRETKEYSIZE",
41: "CERT_SERIALNUMBER", "CERT_SERVER_ISSUER", "CERT_SERVER_SUBJECT", "CERT_SUBJECT",
42: "CONTENT_LENGTH", "CONTENT_TYPE",
1.107 moko 43: "GATEWAY_INTERFACE",
1.73 paf 44: "HTTPS", "HTTPS_KEYSIZE", "HTTPS_SECRETKEYSIZE", "HTTPS_SERVER_ISSUER", "HTTPS_SERVER_SUBJECT",
45: "INSTANCE_ID", "INSTANCE_META_PATH",
1.107 moko 46: "LOCAL_ADDR", "LOGON_USER",
1.73 paf 47: "PATH_INFO", "PATH_TRANSLATED",
48: "QUERY_STRING",
1.107 moko 49: "REMOTE_ADDR", "REMOTE_HOST", "REMOTE_PORT", "REMOTE_USER", "REQUEST_METHOD",
1.73 paf 50: "SCRIPT_NAME",
51: "SERVER_NAME", "SERVER_PORT", "SERVER_PORT_SECURE", "SERVER_PROTOCOL", "SERVER_SOFTWARE",
52: "URL",
53: };
54: const int IIS51var_count=sizeof(IIS51vars)/sizeof(*IIS51vars);
55:
1.65 paf 56: // globals
57:
58: char argv0[MAX_STRING]="";
59:
1.18 paf 60: // SAPI
61:
1.38 parser 62: #ifndef DOXYGEN
63: /*
1.18 paf 64: ISAPI SAPI functions receive this context information.
1.38 parser 65: see Pool::set_context
1.18 paf 66: */
1.83 paf 67: class SAPI_Info {
68: public:
1.3 paf 69: LPEXTENSION_CONTROL_BLOCK lpECB;
70: String *header;
71: DWORD http_response_code;
72: };
1.38 parser 73: #endif
1.3 paf 74:
1.26 paf 75: // goes to 'cs-uri-query' log file field. webmaster: switch it ON[default OFF].
1.83 paf 76: void SAPI::log(SAPI_Info& SAPI_info, const char* fmt, ...) {
1.26 paf 77: va_list args;
78: va_start(args,fmt);
1.99 misha 79: char buf[MAX_LOG_STRING];
1.83 paf 80: const char* prefix="PARSER_ERROR:";
1.26 paf 81: strcpy(buf, prefix);
1.47 parser 82: char *start=buf+strlen(prefix);
1.99 misha 83: DWORD size=vsnprintf(start, MAX_LOG_STRING-strlen(prefix), fmt, args);
84: size=remove_crlf(start, start+size);
1.47 parser 85:
1.114 moko 86: SAPI_info.lpECB->ServerSupportFunction(SAPI_info.lpECB->ConnID, HSE_APPEND_LOG_PARAMETER, buf, &size, 0);
1.55 parser 87: }
88:
89: /// @todo event log
1.114 moko 90: void SAPI::die(const char* fmt, ...) {
91: va_list args;
92: va_start(args, fmt);
1.83 paf 93: if(FILE *log=fopen("c:\\parser3die.log", "at")) {
1.65 paf 94: vfprintf(log, fmt, args);
95: fclose(log);
96: }
1.114 moko 97: // abnormal exit
1.81 paf 98: abort();
1.90 paf 99: // va_end(args);
1.83 paf 100: }
1.1 paf 101:
1.107 moko 102: char* SAPI::Env::get(SAPI_Info& SAPI_info, const char* name) {
1.83 paf 103: char *variable_buf=new(PointerFreeGC) char[MAX_STRING];
1.1 paf 104: DWORD variable_len = MAX_STRING-1;
105:
1.83 paf 106: if(SAPI_info.lpECB->GetServerVariable(SAPI_info.lpECB->ConnID, const_cast<char *>(name),
1.1 paf 107: variable_buf, &variable_len)) {
1.73 paf 108: if(*variable_buf) { // saw returning len=1 && *buf=0 :(
109: variable_buf[variable_len]=0;
110: return variable_buf;
111: }
1.7 paf 112: } else if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) {
1.83 paf 113: variable_buf=new(PointerFreeGC) char[variable_len+1];
1.7 paf 114:
1.83 paf 115: if(SAPI_info.lpECB->GetServerVariable(SAPI_info.lpECB->ConnID, const_cast<char *>(name),
1.7 paf 116: variable_buf, &variable_len)) {
1.73 paf 117: if(*variable_buf) {
118: variable_buf[variable_len]=0;
119: return variable_buf;
120: }
1.7 paf 121: }
1.1 paf 122: }
1.7 paf 123:
1.1 paf 124: return 0;
125: }
126:
1.83 paf 127: static int grep_char(const char* s, char c) {
1.72 paf 128: int result=0;
129: if(s) {
130: while(s=strchr(s, c)) {
131: s++; // skip found c
132: result++;
133: }
134: }
135: return result;
136: }
1.83 paf 137: static const char* mk_env_pair(const char* key, const char* value) {
138: char *result=new(PointerFreeGC) char[strlen(key)+1/*=*/+strlen(value)+1/*0*/];
1.72 paf 139: strcpy(result, key); strcat(result, "="); strcat(result, value);
140: return result;
141: }
1.107 moko 142: const char* const *SAPI::Env::get(SAPI_Info& info) {
1.72 paf 143: // we know this buf is writable
1.107 moko 144: char* all_http_vars=SAPI::Env::get(info, "ALL_HTTP");
1.72 paf 145: const int http_var_count=grep_char(all_http_vars, '\n')+1/*\n for theoretical(never saw) this \0*/;
1.90 paf 146:
1.92 paf 147: const char* *result=new(PointerFreeGC) const char*[IIS51var_count+http_var_count+1/*0*/];
1.83 paf 148: const char* *cur=result;
1.72 paf 149:
150: // IIS5.1 vars
151: for(int i=0; i<IIS51var_count; i++) {
1.83 paf 152: const char* key=IIS51vars[i];
1.107 moko 153: if(const char* value=SAPI::Env::get(info, key))
1.83 paf 154: *cur++=mk_env_pair(key, value);
1.72 paf 155: }
156:
157: // HTTP_* vars
158: if(char *s=all_http_vars) {
159: while(char *key=lsplit(&s, '\n'))
160: if(char *value=lsplit(key, ':'))
1.83 paf 161: *cur++=mk_env_pair(key, value);
1.72 paf 162: }
163:
164: // mark EOE
165: *cur=0;
166:
167: return result;
168: }
169:
1.83 paf 170: size_t SAPI::read_post(SAPI_Info& SAPI_info, char *buf, size_t max_bytes) {
1.1 paf 171: DWORD read_from_buf=0;
172: DWORD read_from_input=0;
173: DWORD total_read=0;
174:
1.83 paf 175: read_from_buf=min(SAPI_info.lpECB->cbAvailable, max_bytes);
176: memcpy(buf, SAPI_info.lpECB->lpbData, read_from_buf);
1.1 paf 177: total_read+=read_from_buf;
178:
179: if(read_from_buf<max_bytes &&
1.83 paf 180: read_from_buf<SAPI_info.lpECB->cbTotalBytes) {
1.1 paf 181: DWORD cbRead=0, cbSize;
182:
1.3 paf 183: read_from_input=min(max_bytes-read_from_buf,
1.83 paf 184: SAPI_info.lpECB->cbTotalBytes-read_from_buf);
1.1 paf 185: while(cbRead < read_from_input) {
186: cbSize=read_from_input - cbRead;
1.83 paf 187: if(!SAPI_info.lpECB->ReadClient(SAPI_info.lpECB->ConnID,
1.3 paf 188: buf+read_from_buf+cbRead, &cbSize) ||
1.1 paf 189: cbSize==0)
190: break;
191: cbRead+=cbSize;
192: }
193: total_read+=cbRead;
194: }
195: return total_read;
196: }
197:
1.83 paf 198: void SAPI::add_header_attribute(SAPI_Info& SAPI_info,
199: const char* dont_store_key, const char* dont_store_value) {
200: if(strcasecmp(dont_store_key, "location")==0)
201: SAPI_info.http_response_code=302;
202:
1.101 misha 203: if(strcasecmp(dont_store_key, HTTP_STATUS)==0)
1.115 ! moko 204: SAPI_info.http_response_code=pa_atoi(dont_store_value);
1.83 paf 205: else
1.102 misha 206: (*SAPI_info.header) << capitalize(dont_store_key) << ": " << pa_strdup(dont_store_value) << "\r\n";
1.1 paf 207: }
208:
1.23 paf 209: /// @todo intelligent cache-control
1.83 paf 210: void SAPI::send_header(SAPI_Info& SAPI_info) {
1.64 paf 211: HSE_SEND_HEADER_EX_INFO header_info;
1.1 paf 212:
213: char status_buf[MAX_STATUS_LENGTH];
1.83 paf 214: switch(SAPI_info.http_response_code) {
1.1 paf 215: case 200:
216: header_info.pszStatus="200 OK";
217: break;
218: case 302:
219: header_info.pszStatus="302 Moved Temporarily";
220: break;
1.8 paf 221: case 401:// useless untill parser auth mech
1.1 paf 222: header_info.pszStatus="401 Authorization Required";
1.8 paf 223: break;
1.1 paf 224: default:
1.3 paf 225: snprintf(status_buf, MAX_STATUS_LENGTH,
1.83 paf 226: "%d Undescribed", SAPI_info.http_response_code);
1.1 paf 227: header_info.pszStatus=status_buf;
228: break;
229: }
230: header_info.cchStatus=strlen(header_info.pszStatus);
1.83 paf 231: *SAPI_info.header << "\r\n"; // ISAPI v<5 did quite well without it
232: header_info.pszHeader=SAPI_info.header->cstr();
233: header_info.cchHeader=SAPI_info.header->length();
1.5 paf 234: header_info.fKeepConn=true;
1.1 paf 235:
1.83 paf 236: SAPI_info.lpECB->dwHttpStatusCode=SAPI_info.http_response_code;
1.1 paf 237:
1.83 paf 238: SAPI_info.lpECB->ServerSupportFunction(SAPI_info.lpECB->ConnID,
1.3 paf 239: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 240: }
241:
1.91 paf 242: size_t SAPI::send_body(SAPI_Info& SAPI_info, const void *buf, size_t size) {
1.1 paf 243: DWORD num_bytes=size;
1.91 paf 244: if(!SAPI_info.lpECB->WriteClient(SAPI_info.lpECB->ConnID,
245: const_cast<void *>(buf), &num_bytes, HSE_IO_SYNC))
246: return 0;
247: return (size_t)num_bytes;
1.1 paf 248: }
1.16 paf 249:
1.1 paf 250:
1.15 paf 251: static bool parser_init() {
1.1 paf 252: static bool globals_inited=false;
253: if(globals_inited)
1.15 paf 254: return true;
1.1 paf 255: globals_inited=true;
256:
1.53 parser 257: try {
1.111 moko 258: // init libraries
1.83 paf 259: pa_globals_init();
1.15 paf 260: // successful finish
261: return true;
1.96 paf 262: } catch(.../*const Exception& e*/) { // global problem
1.15 paf 263: // unsuccessful finish
264: return false;
1.1 paf 265: }
266: }
267:
1.89 paf 268: static void parser_done() {
1.111 moko 269: // finalize libraries
1.89 paf 270: pa_globals_done();
271: }
272:
1.1 paf 273: /// ISAPI //
274: BOOL WINAPI GetExtensionVersion(HSE_VERSION_INFO *pVer) {
275: pVer->dwExtensionVersion = HSE_VERSION;
1.36 parser 276: strncpy(pVer->lpszExtensionDesc, "Parser "PARSER_VERSION, HSE_MAX_EXT_DLL_NAME_LEN-1);
277: pVer->lpszExtensionDesc[HSE_MAX_EXT_DLL_NAME_LEN-1]=0;
1.15 paf 278: return parser_init();
1.89 paf 279: }
280: // dwFlags & HSE_TERM_MUST_UNLOAD means we can't return false
281: BOOL WINAPI TerminateExtension(
282: DWORD /*dwFlags*/
283: )
284: {
285: parser_done();
286:
287: return TRUE;
1.1 paf 288: }
289:
1.6 paf 290: /**
291: ISAPI // main workhorse
292:
1.23 paf 293: @todo
1.10 paf 294: IIS: remove trailing default-document[index.html] from $request.uri.
295: to do that we need to consult metabase,
1.12 paf 296: wich is tested&works but seems slow runtime
297: and not could-be-quickly-implemented if prepared.
1.37 parser 298: @test
299: PARSER_VERSION from outside
1.6 paf 300: */
1.83 paf 301: void real_parser_handler(SAPI_Info& SAPI_info, bool header_only) {
1.88 paf 302: // collect garbage from prev request
303: #ifndef PA_DEBUG_DISABLE_GC
1.112 moko 304: GC_dont_gc=0;
305: GC_gcollect();
306: GC_dont_gc=1;
1.88 paf 307: #endif
308:
1.83 paf 309: SAPI_info.header=new String;
310: LPEXTENSION_CONTROL_BLOCK lpECB=SAPI_info.lpECB;
1.53 parser 311:
312: // Request info
1.83 paf 313: Request_info request_info; memset(&request_info, 0, sizeof(request_info));
1.53 parser 314:
315: size_t path_translated_buf_size=strlen(lpECB->lpszPathTranslated)+1;
1.83 paf 316: char *filespec_to_process=pa_strdup(lpECB->lpszPathTranslated, path_translated_buf_size);
1.53 parser 317: #ifdef WIN32
318: back_slashes_to_slashes(filespec_to_process);
319: #endif
320:
1.107 moko 321: if(const char* path_info=SAPI::Env::get(SAPI_info, "PATH_INFO")) {
1.53 parser 322: // IIS
323: size_t len=strlen(filespec_to_process)-strlen(path_info);
1.83 paf 324: char *buf=new(PointerFreeGC) char[len+1];
1.53 parser 325: strncpy(buf, filespec_to_process, len); buf[len]=0;
326: request_info.document_root=buf;
327: } else
1.98 misha 328: throw Exception(PARSER_RUNTIME,
1.53 parser 329: 0,
330: "ISAPI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)");
331:
332: request_info.path_translated=filespec_to_process;
333: request_info.method=lpECB->lpszMethod;
334: request_info.query_string=lpECB->lpszQueryString;
335: if(lpECB->lpszQueryString && *lpECB->lpszQueryString) {
1.83 paf 336: char *reconstructed_uri=new(PointerFreeGC) char[
1.53 parser 337: strlen(lpECB->lpszPathInfo)+1/*'?'*/+
1.83 paf 338: strlen(lpECB->lpszQueryString)+1/*0*/];
1.53 parser 339: strcpy(reconstructed_uri, lpECB->lpszPathInfo);
340: strcat(reconstructed_uri, "?");
341: strcat(reconstructed_uri, lpECB->lpszQueryString);
342: request_info.uri=reconstructed_uri;
343: } else
344: request_info.uri=lpECB->lpszPathInfo;
345:
346: request_info.content_type=lpECB->lpszContentType;
347: request_info.content_length=lpECB->cbTotalBytes;
1.107 moko 348: request_info.cookie=SAPI::Env::get(SAPI_info, "HTTP_COOKIE");
1.76 paf 349: request_info.mail_received=false;
1.53 parser 350:
351: // prepare to process request
1.83 paf 352: Request request(SAPI_info,
1.53 parser 353: request_info,
1.104 moko 354: String::Language(String::L_HTML|String::L_OPTIMIZE_BIT));
1.53 parser 355:
1.65 paf 356: // beside by binary
1.75 paf 357: static char beside_binary_path[MAX_STRING];
358: strncpy(beside_binary_path, argv0, MAX_STRING-1); beside_binary_path[MAX_STRING-1]=0; // filespec of my binary
1.65 paf 359: if(!(
1.75 paf 360: rsplit(beside_binary_path, '/') ||
361: rsplit(beside_binary_path, '\\'))) { // strip filename
1.65 paf 362: // no path, just filename
1.75 paf 363: beside_binary_path[0]='.'; beside_binary_path[1]=0;
1.65 paf 364: }
1.74 paf 365: char config_filespec[MAX_STRING];
366: snprintf(config_filespec, MAX_STRING,
1.65 paf 367: "%s/%s",
1.75 paf 368: beside_binary_path, AUTO_FILE_NAME);
1.96 paf 369: bool fail_on_config_read_problem=entry_exists(config_filespec);
1.65 paf 370:
1.53 parser 371: // process the request
372: request.core(
1.79 paf 373: config_filespec, fail_on_config_read_problem, // /path/to/first/auto.p
1.53 parser 374: header_only);
375: }
376:
1.92 paf 377: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
1.113 moko 378: static const Exception call_real_parser_handler__do_PEH_return_it(SAPI_Info& SAPI_info, bool header_only) {
1.92 paf 379: try {
380: real_parser_handler(SAPI_info, header_only);
381: } catch(const Exception& e) {
382: return e;
383: }
384:
385: return Exception();
386: }
1.113 moko 387:
388: static void call_real_parser_handler__supress_system_exception(SAPI_Info& SAPI_info, bool header_only) {
1.92 paf 389: Exception parser_exception;
1.53 parser 390: LPEXCEPTION_POINTERS system_exception=0;
1.92 paf 391:
1.53 parser 392: __try {
1.113 moko 393: parser_exception=call_real_parser_handler__do_PEH_return_it(SAPI_info, header_only);
394: } __except ( (system_exception=GetExceptionInformation()), EXCEPTION_EXECUTE_HANDLER) {
1.53 parser 395: if(system_exception)
396: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.113 moko 397: throw Exception("system", 0, "0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.53 parser 398: else
1.113 moko 399: throw Exception("system", 0, "<no exception record>");
1.92 paf 400: else
1.113 moko 401: throw Exception("system", 0, "<no exception information>");
1.53 parser 402: }
1.92 paf 403:
404: if(parser_exception)
405: throw Exception(parser_exception);
406: }
1.53 parser 407: #endif
408:
1.83 paf 409: DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB) {
410: //_asm int 3;
411: SAPI_Info SAPI_info={
1.15 paf 412: lpECB,
1.83 paf 413: 0, // filling later: so that if there would be error pool would have SAPI_info
1.80 paf 414: 200 // default http_response_code [lpECB->dwHttpStatusCode seems to be always 0, even on 404 redirect to /404.html]
1.15 paf 415: };
1.71 paf 416:
1.1 paf 417: bool header_only=strcasecmp(lpECB->lpszMethod, "HEAD")==0;
1.53 parser 418: try { // global try
1.92 paf 419: #ifdef PA_SUPPRESS_SYSTEM_EXCEPTION
420: call_real_parser_handler__supress_system_exception(
421: #else
422: real_parser_handler(
423: #endif
424: SAPI_info, header_only);
1.2 paf 425: // successful finish
1.53 parser 426: } catch(const Exception& e) { // global problem
1.12 paf 427: // don't allocate anything on pool here:
428: // possible pool' exception not catch-ed now
1.31 paf 429: // and there could be out-of-memory exception
1.83 paf 430: const char* body=e.comment();
1.16 paf 431: // log it
1.83 paf 432: SAPI::log(SAPI_info, "exception in request exception handler: %s", body);
1.16 paf 433:
434: //
1.1 paf 435: int content_length=strlen(body);
436:
1.12 paf 437: // prepare header // not using SAPI func wich allocates on pool
438: char header_buf[MAX_STRING];
439: int header_len=snprintf(header_buf, MAX_STRING,
1.103 misha 440: HTTP_CONTENT_TYPE_CAPITALIZED ": text/plain\r\n"
441: HTTP_CONTENT_LENGTH_CAPITALIZED ": %u\r\n"
1.69 paf 442: // "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
1.30 paf 443: "\r\n",
1.12 paf 444: content_length);
445:
446: HSE_SEND_HEADER_EX_INFO header_info;
447: header_info.pszStatus="200 OK";
448: header_info.cchStatus=strlen(header_info.pszStatus);
449: header_info.pszHeader=header_buf;
450: header_info.cchHeader=header_len;
451: header_info.fKeepConn=true;
452:
1.1 paf 453: // send header
1.12 paf 454: lpECB->dwHttpStatusCode=200;
455: lpECB->ServerSupportFunction(lpECB->ConnID,
456: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 457:
458: // send body
459: if(!header_only)
1.83 paf 460: SAPI::send_body(SAPI_info, body, content_length);
1.1 paf 461:
462: // unsuccessful finish
463: }
1.65 paf 464: /*
1.83 paf 465: const char* body="test";
1.65 paf 466:
467: //
468: int content_length=strlen(body);
469:
470: // prepare header // not using SAPI func wich allocates on pool
471: char header_buf[MAX_STRING];
472: int header_len=snprintf(header_buf, MAX_STRING,
1.103 misha 473: HTTP_CONTENT_TYPE_CAPITALIZED ": text/plain\r\n"
474: HTTP_CONTENT_LENGTH_CAPITALIZED ": %u\r\n"
1.65 paf 475: "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
476: "\r\n",
477: content_length);
478: HSE_SEND_HEADER_EX_INFO header_info;
479: header_info.pszStatus="200 OK";
480: header_info.cchStatus=strlen(header_info.pszStatus);
481: header_info.pszHeader=header_buf;
482: header_info.cchHeader=header_len;
483: header_info.fKeepConn=true;
484:
485: // send header
486: lpECB->dwHttpStatusCode=200;
487: lpECB->ServerSupportFunction(lpECB->ConnID,
488: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
489:
490: // send body
491: DWORD num_bytes=content_length;
492: lpECB->WriteClient(lpECB->ConnID,
493: (void *)body, &num_bytes, HSE_IO_SYNC);
494: */
1.71 paf 495: return HSE_STATUS_SUCCESS_AND_KEEP_CONN;
1.1 paf 496: }
1.65 paf 497:
498: BOOL WINAPI DllMain(
499: HINSTANCE hinstDLL, // handle to the DLL module
1.85 paf 500: DWORD /*fdwReason*/, // reason for calling function
501: LPVOID /*lpvReserved*/ // reserved
1.65 paf 502: ) {
503:
504: GetModuleFileName(
505: hinstDLL, // handle to module
506: argv0, // file name of module
507: sizeof(argv0) // size of buffer
508: );
509:
510: return TRUE;
511: }
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