Annotation of parser3/src/targets/isapi/parser3isapi.C, revision 1.48
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:
1.48 ! parser 7: $Id: parser3isapi.C,v 1.47 2001/10/08 09:04:08 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:
28: #define MAX_STATUS_LENGTH sizeof("xxxx LONGEST STATUS DESCRIPTION")
1.44 parser 29:
30: // consts
31:
32: extern const char *main_RCSIds[];
1.46 parser 33: #ifdef USE_SMTP
1.44 parser 34: extern const char *smtp_RCSIds[];
1.45 parser 35: #endif
1.44 parser 36: extern const char *gd_RCSIds[];
37: extern const char *classes_RCSIds[];
38: extern const char *types_RCSIds[];
39: extern const char *parser3isapi_RCSIds[];
40: const char **RCSIds[]={
41: main_RCSIds,
1.46 parser 42: #ifdef USE_SMTP
1.44 parser 43: smtp_RCSIds,
1.45 parser 44: #endif
1.44 parser 45: gd_RCSIds,
46: classes_RCSIds,
47: types_RCSIds,
48: parser3isapi_RCSIds,
1.48 ! parser 49: #ifdef XML
! 50: xalan_patched_RCSIds,
! 51: #endif
1.44 parser 52: 0
53: };
1.1 paf 54:
1.18 paf 55: // SAPI
56:
1.38 parser 57: #ifndef DOXYGEN
58: /*
1.18 paf 59: ISAPI SAPI functions receive this context information.
1.38 parser 60: see Pool::set_context
1.18 paf 61: */
1.15 paf 62: struct SAPI_func_context {
1.3 paf 63: LPEXTENSION_CONTROL_BLOCK lpECB;
64: String *header;
65: DWORD http_response_code;
66: };
1.38 parser 67: #endif
1.3 paf 68:
1.26 paf 69: // goes to 'cs-uri-query' log file field. webmaster: switch it ON[default OFF].
70: void SAPI::log(Pool& pool, const char *fmt, ...) {
71: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
72:
73: va_list args;
74: va_start(args,fmt);
75: char buf[MAX_STRING];
76: const char *prefix="PARSER_ERROR:";
77: strcpy(buf, prefix);
1.47 parser 78: char *start=buf+strlen(prefix);
79: size_t size=vsnprintf(start, MAX_STRING-strlen(prefix), fmt, args);
80: remove_crlf(start, start+size);
81:
1.26 paf 82: ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID,
83: HSE_APPEND_LOG_PARAMETER, buf, &size, 0);
84: }
85:
1.9 paf 86: const char *SAPI::get_env(Pool& pool, const char *name) {
1.15 paf 87: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 88:
89: char *variable_buf=(char *)pool.malloc(MAX_STRING);
90: DWORD variable_len = MAX_STRING-1;
91:
1.3 paf 92: if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name),
1.1 paf 93: variable_buf, &variable_len)) {
94: variable_buf[variable_len]=0;
95: return variable_buf;
1.7 paf 96: } else if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) {
97: variable_buf=(char *)pool.malloc(variable_len+1);
98:
99: if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name),
100: variable_buf, &variable_len)) {
101: variable_buf[variable_len]=0;
102: return variable_buf;
103: }
1.1 paf 104: }
1.7 paf 105:
1.1 paf 106: return 0;
107: }
108:
1.26 paf 109: size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) {
1.15 paf 110: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 111:
112: DWORD read_from_buf=0;
113: DWORD read_from_input=0;
114: DWORD total_read=0;
115:
1.3 paf 116: read_from_buf=min(ctx.lpECB->cbAvailable, max_bytes);
117: memcpy(buf, ctx.lpECB->lpbData, read_from_buf);
1.1 paf 118: total_read+=read_from_buf;
119:
120: if(read_from_buf<max_bytes &&
1.3 paf 121: read_from_buf<ctx.lpECB->cbTotalBytes) {
1.1 paf 122: DWORD cbRead=0, cbSize;
123:
1.3 paf 124: read_from_input=min(max_bytes-read_from_buf,
125: ctx.lpECB->cbTotalBytes-read_from_buf);
1.1 paf 126: while(cbRead < read_from_input) {
127: cbSize=read_from_input - cbRead;
1.3 paf 128: if(!ctx.lpECB->ReadClient(ctx.lpECB->ConnID,
129: buf+read_from_buf+cbRead, &cbSize) ||
1.1 paf 130: cbSize==0)
131: break;
132: cbRead+=cbSize;
133: }
134: total_read+=cbRead;
135: }
136: return total_read;
137: }
138:
1.9 paf 139: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.15 paf 140: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.3 paf 141:
142: if(strcasecmp(key, "location")==0)
143: ctx.http_response_code=302;
144:
145: if(strcasecmp(key, "status")==0)
146: ctx.http_response_code=atoi(value);
147: else {
148: ctx.header->APPEND_CONST(key);
149: ctx.header->APPEND_CONST(": ");
150: ctx.header->APPEND_CONST(value);
1.30 paf 151: ctx.header->APPEND_CONST("\r\n");
1.3 paf 152: }
1.1 paf 153: }
154:
1.23 paf 155: /// @todo intelligent cache-control
1.9 paf 156: void SAPI::send_header(Pool& pool) {
1.15 paf 157: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 158:
1.6 paf 159: ctx.header->APPEND_CONST(
1.30 paf 160: "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
161: "\r\n");
1.1 paf 162: HSE_SEND_HEADER_EX_INFO header_info;
163:
164: char status_buf[MAX_STATUS_LENGTH];
1.3 paf 165: switch(ctx.http_response_code) {
1.1 paf 166: case 200:
167: header_info.pszStatus="200 OK";
168: break;
169: case 302:
170: header_info.pszStatus="302 Moved Temporarily";
171: break;
1.8 paf 172: case 401:// useless untill parser auth mech
1.1 paf 173: header_info.pszStatus="401 Authorization Required";
1.8 paf 174: break;
1.1 paf 175: default:
1.3 paf 176: snprintf(status_buf, MAX_STATUS_LENGTH,
177: "%d Undescribed", ctx.http_response_code);
1.1 paf 178: header_info.pszStatus=status_buf;
179: break;
180: }
181: header_info.cchStatus=strlen(header_info.pszStatus);
1.3 paf 182: header_info.pszHeader=ctx.header->cstr();
183: header_info.cchHeader=ctx.header->size();
1.5 paf 184: header_info.fKeepConn=true;
1.1 paf 185:
1.3 paf 186: ctx.lpECB->dwHttpStatusCode=ctx.http_response_code;
1.1 paf 187:
1.3 paf 188: ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID,
189: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 190: }
191:
1.23 paf 192: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.15 paf 193: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 194:
195: DWORD num_bytes=size;
1.3 paf 196: ctx.lpECB->WriteClient(ctx.lpECB->ConnID,
1.23 paf 197: const_cast<void *>(buf), &num_bytes, HSE_IO_SYNC);
1.1 paf 198: }
1.16 paf 199:
1.1 paf 200: //
201:
1.15 paf 202: static bool parser_init() {
1.1 paf 203: static bool globals_inited=false;
204: if(globals_inited)
1.15 paf 205: return true;
1.1 paf 206: globals_inited=true;
207:
1.13 paf 208: static Pool pool(0); // global pool
1.1 paf 209: PTRY {
1.27 paf 210: // init socks
211: init_socks(pool);
212:
1.32 paf 213: // init global classes
214: init_methoded_array(pool);
1.1 paf 215: // init global variables
1.9 paf 216: pa_globals_init(pool);
1.1 paf 217:
1.15 paf 218: // successful finish
219: return true;
1.1 paf 220: } PCATCH(e) { // global problem
1.15 paf 221: //const char *body=e.comment();
222:
223: // unsuccessful finish
224: return false;
1.1 paf 225: }
226: PEND_CATCH
227: }
228:
229: /// ISAPI //
230: BOOL WINAPI GetExtensionVersion(HSE_VERSION_INFO *pVer) {
231: pVer->dwExtensionVersion = HSE_VERSION;
1.36 parser 232: strncpy(pVer->lpszExtensionDesc, "Parser "PARSER_VERSION, HSE_MAX_EXT_DLL_NAME_LEN-1);
233: pVer->lpszExtensionDesc[HSE_MAX_EXT_DLL_NAME_LEN-1]=0;
1.15 paf 234: return parser_init();
1.1 paf 235: }
236:
1.6 paf 237: /**
238: ISAPI // main workhorse
239:
1.23 paf 240: @todo
1.10 paf 241: IIS: remove trailing default-document[index.html] from $request.uri.
242: to do that we need to consult metabase,
1.12 paf 243: wich is tested&works but seems slow runtime
244: and not could-be-quickly-implemented if prepared.
1.37 parser 245: @test
246: PARSER_VERSION from outside
1.6 paf 247: */
1.1 paf 248: DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB) {
1.13 paf 249: Pool_storage pool_storage;
1.15 paf 250: Pool pool(&pool_storage); // no allocations until assigned context [for reporting]
251: SAPI_func_context ctx={
252: lpECB,
1.18 paf 253: 0, // filling later: so that if there would be error pool would have ctx
1.39 parser 254: 200 // default http_response_code
1.15 paf 255: };
1.41 parser 256: _asm nop; // int 3;
1.15 paf 257: pool.set_context(&ctx);// no allocations before this line!
1.2 paf 258:
1.1 paf 259: bool header_only=strcasecmp(lpECB->lpszMethod, "HEAD")==0;
260: PTRY { // global try
1.12 paf 261: ctx.header=new(pool) String(pool);
1.3 paf 262:
1.2 paf 263: // Request info
264: Request::Info request_info;
1.14 paf 265:
266: size_t path_translated_buf_size=strlen(lpECB->lpszPathTranslated)+1;
267: char *filespec_to_process=(char *)malloc(path_translated_buf_size);
268: memcpy(filespec_to_process, lpECB->lpszPathTranslated, path_translated_buf_size);
269: #ifdef WIN32
270: back_slashes_to_slashes(filespec_to_process);
271: #endif
272:
1.11 paf 273: if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
274: // IIS
275: size_t len=strlen(filespec_to_process)-strlen(path_info);
276: char *buf=(char *)pool.malloc(len+1);
1.36 parser 277: strncpy(buf, filespec_to_process, len); buf[len]=0;
1.11 paf 278: request_info.document_root=buf;
279: } else
1.6 paf 280: PTHROW(0, 0,
281: 0,
1.11 paf 282: "ISAPI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)");
1.6 paf 283:
1.11 paf 284: request_info.path_translated=filespec_to_process;
1.2 paf 285: request_info.method=lpECB->lpszMethod;
286: request_info.query_string=lpECB->lpszQueryString;
287: if(lpECB->lpszQueryString && *lpECB->lpszQueryString) {
1.7 paf 288: char *reconstructed_uri=(char *)malloc(
289: strlen(lpECB->lpszPathInfo)+1/*'?'*/+
290: strlen(lpECB->lpszQueryString)+1/*0*/);
291: strcpy(reconstructed_uri, lpECB->lpszPathInfo);
1.2 paf 292: strcat(reconstructed_uri, "?");
1.7 paf 293: strcat(reconstructed_uri, lpECB->lpszQueryString);
1.2 paf 294: request_info.uri=reconstructed_uri;
295: } else
296: request_info.uri=lpECB->lpszPathInfo;
297:
298: request_info.content_type=lpECB->lpszContentType;
299: request_info.content_length=lpECB->cbTotalBytes;
1.9 paf 300: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
1.20 paf 301: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
302:
1.2 paf 303:
304: // prepare to process request
305: Request request(pool,
306: request_info,
1.33 paf 307: String::UL_USER_HTML
1.2 paf 308: );
1.15 paf 309:
1.2 paf 310: // some root-controlled location
1.7 paf 311: // c:\windows
1.42 parser 312: char root_config_path[MAX_STRING];
313: GetWindowsDirectory(root_config_path, MAX_STRING);
1.7 paf 314: // must be dynamic: rethrowing from request.core
315: // may return 'source' which can be inside of 'root auto.p@exeception'
1.42 parser 316: char *root_config_filespec=(char *)pool.malloc(MAX_STRING);
317: snprintf(root_config_filespec, MAX_STRING,
318: "%s/%s",
319: root_config_path, CONFIG_FILE_NAME);
1.4 paf 320:
1.2 paf 321: // process the request
322: request.core(
1.42 parser 323: root_config_filespec, false/*may be abcent*/, // /path/to/admin/auto.p
1.2 paf 324: 0/*parser_site_auto_path*/, false, // /path/to/site/auto.p
325: header_only);
326: // successful finish
1.12 paf 327: } PCATCH(e) { // global problem
328: // don't allocate anything on pool here:
329: // possible pool' exception not catch-ed now
1.31 paf 330: // and there could be out-of-memory exception
1.1 paf 331: const char *body=e.comment();
1.16 paf 332: // log it
333: SAPI::log(pool, "exception in request exception handler: %s", body);
334:
335: //
1.1 paf 336: int content_length=strlen(body);
337:
1.12 paf 338: // prepare header // not using SAPI func wich allocates on pool
339: char header_buf[MAX_STRING];
340: int header_len=snprintf(header_buf, MAX_STRING,
1.30 paf 341: "content-type: text/plain\r\n"
342: "content-length: %lu\r\n"
343: "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
344: "\r\n",
1.12 paf 345: content_length);
346:
347: HSE_SEND_HEADER_EX_INFO header_info;
348: header_info.pszStatus="200 OK";
349: header_info.cchStatus=strlen(header_info.pszStatus);
350: header_info.pszHeader=header_buf;
351: header_info.cchHeader=header_len;
352: header_info.fKeepConn=true;
353:
1.1 paf 354: // send header
1.12 paf 355: lpECB->dwHttpStatusCode=200;
356: lpECB->ServerSupportFunction(lpECB->ConnID,
357: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 358:
359: // send body
360: if(!header_only)
1.9 paf 361: SAPI::send_body(pool, body, content_length);
1.1 paf 362:
363: // unsuccessful finish
364: }
365: PEND_CATCH
366:
1.6 paf 367: return HSE_STATUS_SUCCESS_AND_KEEP_CONN;
1.1 paf 368: }
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