Annotation of parser3/src/targets/isapi/parser3isapi.C, revision 1.52
1.29 paf 1: /** @file
2: Parser: IIS extension.
3:
4: Copyright (c) 2000,2001 ArtLebedev Group (http://www.artlebedev.com)
1.44 parser 5: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.29 paf 6:
1.52 ! parser 7: $Id: parser3isapi.C,v 1.51 2001/10/12 14:28:48 parser Exp $
1.29 paf 8: */
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:
16: #include <windows.h>
17: #include <process.h>
18:
19: #include <httpext.h>
20:
1.9 paf 21: #include "pa_sapi.h"
1.1 paf 22: #include "pa_globals.h"
23: #include "pa_request.h"
24: #include "pa_version.h"
1.13 paf 25: #include "pool_storage.h"
1.24 paf 26: #include "pa_socks.h"
1.1 paf 27:
1.51 parser 28: #ifdef XML
29: #include <XalanTransformer/XalanCAPI.h>
30: #endif
31:
1.1 paf 32: #define MAX_STATUS_LENGTH sizeof("xxxx LONGEST STATUS DESCRIPTION")
1.44 parser 33:
34: // consts
35:
36: extern const char *main_RCSIds[];
1.46 parser 37: #ifdef USE_SMTP
1.44 parser 38: extern const char *smtp_RCSIds[];
1.45 parser 39: #endif
1.44 parser 40: extern const char *gd_RCSIds[];
41: extern const char *classes_RCSIds[];
42: extern const char *types_RCSIds[];
43: extern const char *parser3isapi_RCSIds[];
1.49 parser 44: #ifdef XML
45: extern const char *xalan_patched_RCSIds[];
46: #endif
1.44 parser 47: const char **RCSIds[]={
48: main_RCSIds,
1.46 parser 49: #ifdef USE_SMTP
1.44 parser 50: smtp_RCSIds,
1.45 parser 51: #endif
1.44 parser 52: gd_RCSIds,
53: classes_RCSIds,
54: types_RCSIds,
55: parser3isapi_RCSIds,
1.48 parser 56: #ifdef XML
57: xalan_patched_RCSIds,
58: #endif
1.44 parser 59: 0
60: };
1.1 paf 61:
1.18 paf 62: // SAPI
63:
1.38 parser 64: #ifndef DOXYGEN
65: /*
1.18 paf 66: ISAPI SAPI functions receive this context information.
1.38 parser 67: see Pool::set_context
1.18 paf 68: */
1.15 paf 69: struct SAPI_func_context {
1.3 paf 70: LPEXTENSION_CONTROL_BLOCK lpECB;
71: String *header;
72: DWORD http_response_code;
73: };
1.38 parser 74: #endif
1.3 paf 75:
1.50 parser 76: #ifdef XML
77: /**
78: * Terminate Xalan and Xerces.
79: *
80: * Should be called only once per process after deleting all
81: * instances of XalanTransformer. Once a process has called
82: * this function, it cannot use the API for the remaining
83: * lifetime of the process.
84:
85:
86: this requirement is fullfilled by using Pool::register_cleanup
87: */
88: void callXalanTerminate(void *) {
89: //_asm int 3;
90: XalanTerminate();
91: }
92: #endif
93:
1.26 paf 94: // goes to 'cs-uri-query' log file field. webmaster: switch it ON[default OFF].
95: void SAPI::log(Pool& pool, const char *fmt, ...) {
96: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
97:
98: va_list args;
99: va_start(args,fmt);
100: char buf[MAX_STRING];
101: const char *prefix="PARSER_ERROR:";
102: strcpy(buf, prefix);
1.47 parser 103: char *start=buf+strlen(prefix);
1.51 parser 104: DWORD size=vsnprintf(start, MAX_STRING-strlen(prefix), fmt, args);
1.47 parser 105: remove_crlf(start, start+size);
106:
1.26 paf 107: ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID,
108: HSE_APPEND_LOG_PARAMETER, buf, &size, 0);
109: }
110:
1.9 paf 111: const char *SAPI::get_env(Pool& pool, const char *name) {
1.15 paf 112: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 113:
114: char *variable_buf=(char *)pool.malloc(MAX_STRING);
115: DWORD variable_len = MAX_STRING-1;
116:
1.3 paf 117: if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name),
1.1 paf 118: variable_buf, &variable_len)) {
119: variable_buf[variable_len]=0;
120: return variable_buf;
1.7 paf 121: } else if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) {
122: variable_buf=(char *)pool.malloc(variable_len+1);
123:
124: if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name),
125: variable_buf, &variable_len)) {
126: variable_buf[variable_len]=0;
127: return variable_buf;
128: }
1.1 paf 129: }
1.7 paf 130:
1.1 paf 131: return 0;
132: }
133:
1.26 paf 134: size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) {
1.15 paf 135: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 136:
137: DWORD read_from_buf=0;
138: DWORD read_from_input=0;
139: DWORD total_read=0;
140:
1.3 paf 141: read_from_buf=min(ctx.lpECB->cbAvailable, max_bytes);
142: memcpy(buf, ctx.lpECB->lpbData, read_from_buf);
1.1 paf 143: total_read+=read_from_buf;
144:
145: if(read_from_buf<max_bytes &&
1.3 paf 146: read_from_buf<ctx.lpECB->cbTotalBytes) {
1.1 paf 147: DWORD cbRead=0, cbSize;
148:
1.3 paf 149: read_from_input=min(max_bytes-read_from_buf,
150: ctx.lpECB->cbTotalBytes-read_from_buf);
1.1 paf 151: while(cbRead < read_from_input) {
152: cbSize=read_from_input - cbRead;
1.3 paf 153: if(!ctx.lpECB->ReadClient(ctx.lpECB->ConnID,
154: buf+read_from_buf+cbRead, &cbSize) ||
1.1 paf 155: cbSize==0)
156: break;
157: cbRead+=cbSize;
158: }
159: total_read+=cbRead;
160: }
161: return total_read;
162: }
163:
1.9 paf 164: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.15 paf 165: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.3 paf 166:
167: if(strcasecmp(key, "location")==0)
168: ctx.http_response_code=302;
169:
170: if(strcasecmp(key, "status")==0)
171: ctx.http_response_code=atoi(value);
172: else {
173: ctx.header->APPEND_CONST(key);
174: ctx.header->APPEND_CONST(": ");
175: ctx.header->APPEND_CONST(value);
1.30 paf 176: ctx.header->APPEND_CONST("\r\n");
1.3 paf 177: }
1.1 paf 178: }
179:
1.23 paf 180: /// @todo intelligent cache-control
1.9 paf 181: void SAPI::send_header(Pool& pool) {
1.15 paf 182: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 183:
1.6 paf 184: ctx.header->APPEND_CONST(
1.30 paf 185: "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
186: "\r\n");
1.1 paf 187: HSE_SEND_HEADER_EX_INFO header_info;
188:
189: char status_buf[MAX_STATUS_LENGTH];
1.3 paf 190: switch(ctx.http_response_code) {
1.1 paf 191: case 200:
192: header_info.pszStatus="200 OK";
193: break;
194: case 302:
195: header_info.pszStatus="302 Moved Temporarily";
196: break;
1.8 paf 197: case 401:// useless untill parser auth mech
1.1 paf 198: header_info.pszStatus="401 Authorization Required";
1.8 paf 199: break;
1.1 paf 200: default:
1.3 paf 201: snprintf(status_buf, MAX_STATUS_LENGTH,
202: "%d Undescribed", ctx.http_response_code);
1.1 paf 203: header_info.pszStatus=status_buf;
204: break;
205: }
206: header_info.cchStatus=strlen(header_info.pszStatus);
1.3 paf 207: header_info.pszHeader=ctx.header->cstr();
208: header_info.cchHeader=ctx.header->size();
1.5 paf 209: header_info.fKeepConn=true;
1.1 paf 210:
1.3 paf 211: ctx.lpECB->dwHttpStatusCode=ctx.http_response_code;
1.1 paf 212:
1.3 paf 213: ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID,
214: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 215: }
216:
1.23 paf 217: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.15 paf 218: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 219:
220: DWORD num_bytes=size;
1.3 paf 221: ctx.lpECB->WriteClient(ctx.lpECB->ConnID,
1.23 paf 222: const_cast<void *>(buf), &num_bytes, HSE_IO_SYNC);
1.1 paf 223: }
1.16 paf 224:
1.1 paf 225: //
226:
1.15 paf 227: static bool parser_init() {
1.1 paf 228: static bool globals_inited=false;
229: if(globals_inited)
1.15 paf 230: return true;
1.1 paf 231: globals_inited=true;
232:
1.13 paf 233: static Pool pool(0); // global pool
1.1 paf 234: PTRY {
1.27 paf 235: // init socks
236: init_socks(pool);
237:
1.50 parser 238: #ifdef XML
239: /**
240: * Initialize Xerces and Xalan.
241: *
242: * Should be called only once per process before making
243: * any other API calls.
244: */
245: //_asm int 3;
246: XalanInitialize();
247: pool.register_cleanup(callXalanTerminate, 0);
248: #endif
249:
1.32 paf 250: // init global classes
251: init_methoded_array(pool);
1.1 paf 252: // init global variables
1.9 paf 253: pa_globals_init(pool);
1.1 paf 254:
1.15 paf 255: // successful finish
256: return true;
1.1 paf 257: } PCATCH(e) { // global problem
1.15 paf 258: //const char *body=e.comment();
259:
260: // unsuccessful finish
261: return false;
1.1 paf 262: }
263: PEND_CATCH
264: }
265:
266: /// ISAPI //
267: BOOL WINAPI GetExtensionVersion(HSE_VERSION_INFO *pVer) {
268: pVer->dwExtensionVersion = HSE_VERSION;
1.36 parser 269: strncpy(pVer->lpszExtensionDesc, "Parser "PARSER_VERSION, HSE_MAX_EXT_DLL_NAME_LEN-1);
270: pVer->lpszExtensionDesc[HSE_MAX_EXT_DLL_NAME_LEN-1]=0;
1.15 paf 271: return parser_init();
1.1 paf 272: }
273:
1.6 paf 274: /**
275: ISAPI // main workhorse
276:
1.23 paf 277: @todo
1.10 paf 278: IIS: remove trailing default-document[index.html] from $request.uri.
279: to do that we need to consult metabase,
1.12 paf 280: wich is tested&works but seems slow runtime
281: and not could-be-quickly-implemented if prepared.
1.37 parser 282: @test
283: PARSER_VERSION from outside
1.6 paf 284: */
1.1 paf 285: DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB) {
1.13 paf 286: Pool_storage pool_storage;
1.15 paf 287: Pool pool(&pool_storage); // no allocations until assigned context [for reporting]
288: SAPI_func_context ctx={
289: lpECB,
1.18 paf 290: 0, // filling later: so that if there would be error pool would have ctx
1.39 parser 291: 200 // default http_response_code
1.15 paf 292: };
1.41 parser 293: _asm nop; // int 3;
1.15 paf 294: pool.set_context(&ctx);// no allocations before this line!
1.2 paf 295:
1.50 parser 296: #ifdef XML
297: /**
298: * Initialize Xerces and Xalan.
299: *
300: * Should be called only once per process before making
301: * any other API calls.
302: */
303: //_asm int 3;
304: XalanInitialize();
305: pool.register_cleanup(callXalanTerminate, 0);
306: #endif
307:
308:
1.1 paf 309: bool header_only=strcasecmp(lpECB->lpszMethod, "HEAD")==0;
310: PTRY { // global try
1.12 paf 311: ctx.header=new(pool) String(pool);
1.3 paf 312:
1.2 paf 313: // Request info
314: Request::Info request_info;
1.14 paf 315:
316: size_t path_translated_buf_size=strlen(lpECB->lpszPathTranslated)+1;
1.52 ! parser 317: char *filespec_to_process=(char *)pool.malloc(path_translated_buf_size);
1.14 paf 318: memcpy(filespec_to_process, lpECB->lpszPathTranslated, path_translated_buf_size);
319: #ifdef WIN32
320: back_slashes_to_slashes(filespec_to_process);
321: #endif
322:
1.11 paf 323: if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
324: // IIS
325: size_t len=strlen(filespec_to_process)-strlen(path_info);
326: char *buf=(char *)pool.malloc(len+1);
1.36 parser 327: strncpy(buf, filespec_to_process, len); buf[len]=0;
1.11 paf 328: request_info.document_root=buf;
329: } else
1.6 paf 330: PTHROW(0, 0,
331: 0,
1.11 paf 332: "ISAPI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)");
1.6 paf 333:
1.11 paf 334: request_info.path_translated=filespec_to_process;
1.2 paf 335: request_info.method=lpECB->lpszMethod;
336: request_info.query_string=lpECB->lpszQueryString;
337: if(lpECB->lpszQueryString && *lpECB->lpszQueryString) {
1.52 ! parser 338: char *reconstructed_uri=(char *)pool.malloc(
1.7 paf 339: strlen(lpECB->lpszPathInfo)+1/*'?'*/+
340: strlen(lpECB->lpszQueryString)+1/*0*/);
341: strcpy(reconstructed_uri, lpECB->lpszPathInfo);
1.2 paf 342: strcat(reconstructed_uri, "?");
1.7 paf 343: strcat(reconstructed_uri, lpECB->lpszQueryString);
1.2 paf 344: request_info.uri=reconstructed_uri;
345: } else
346: request_info.uri=lpECB->lpszPathInfo;
347:
348: request_info.content_type=lpECB->lpszContentType;
349: request_info.content_length=lpECB->cbTotalBytes;
1.9 paf 350: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
1.20 paf 351: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
352:
1.2 paf 353:
354: // prepare to process request
355: Request request(pool,
356: request_info,
1.33 paf 357: String::UL_USER_HTML
1.2 paf 358: );
1.15 paf 359:
1.2 paf 360: // some root-controlled location
1.7 paf 361: // c:\windows
1.42 parser 362: char root_config_path[MAX_STRING];
363: GetWindowsDirectory(root_config_path, MAX_STRING);
1.7 paf 364: // must be dynamic: rethrowing from request.core
365: // may return 'source' which can be inside of 'root auto.p@exeception'
1.42 parser 366: char *root_config_filespec=(char *)pool.malloc(MAX_STRING);
367: snprintf(root_config_filespec, MAX_STRING,
368: "%s/%s",
369: root_config_path, CONFIG_FILE_NAME);
1.4 paf 370:
1.2 paf 371: // process the request
372: request.core(
1.42 parser 373: root_config_filespec, false/*may be abcent*/, // /path/to/admin/auto.p
1.2 paf 374: 0/*parser_site_auto_path*/, false, // /path/to/site/auto.p
375: header_only);
376: // successful finish
1.12 paf 377: } PCATCH(e) { // global problem
378: // don't allocate anything on pool here:
379: // possible pool' exception not catch-ed now
1.31 paf 380: // and there could be out-of-memory exception
1.1 paf 381: const char *body=e.comment();
1.16 paf 382: // log it
383: SAPI::log(pool, "exception in request exception handler: %s", body);
384:
385: //
1.1 paf 386: int content_length=strlen(body);
387:
1.12 paf 388: // prepare header // not using SAPI func wich allocates on pool
389: char header_buf[MAX_STRING];
390: int header_len=snprintf(header_buf, MAX_STRING,
1.30 paf 391: "content-type: text/plain\r\n"
392: "content-length: %lu\r\n"
393: "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
394: "\r\n",
1.12 paf 395: content_length);
396:
397: HSE_SEND_HEADER_EX_INFO header_info;
398: header_info.pszStatus="200 OK";
399: header_info.cchStatus=strlen(header_info.pszStatus);
400: header_info.pszHeader=header_buf;
401: header_info.cchHeader=header_len;
402: header_info.fKeepConn=true;
403:
1.1 paf 404: // send header
1.12 paf 405: lpECB->dwHttpStatusCode=200;
406: lpECB->ServerSupportFunction(lpECB->ConnID,
407: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 408:
409: // send body
410: if(!header_only)
1.9 paf 411: SAPI::send_body(pool, body, content_length);
1.1 paf 412:
413: // unsuccessful finish
414: }
415: PEND_CATCH
416:
1.6 paf 417: return HSE_STATUS_SUCCESS_AND_KEEP_CONN;
1.1 paf 418: }
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