Annotation of parser3/src/targets/isapi/parser3isapi.C, revision 1.47
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:
1.47 ! parser 7: $Id: parser3isapi.C,v 1.46 2001/09/26 15:43:59 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,
49: 0
50: };
1.1 paf 51:
1.18 paf 52: // SAPI
53:
1.38 parser 54: #ifndef DOXYGEN
55: /*
1.18 paf 56: ISAPI SAPI functions receive this context information.
1.38 parser 57: see Pool::set_context
1.18 paf 58: */
1.15 paf 59: struct SAPI_func_context {
1.3 paf 60: LPEXTENSION_CONTROL_BLOCK lpECB;
61: String *header;
62: DWORD http_response_code;
63: };
1.38 parser 64: #endif
1.3 paf 65:
1.26 paf 66: // goes to 'cs-uri-query' log file field. webmaster: switch it ON[default OFF].
67: void SAPI::log(Pool& pool, const char *fmt, ...) {
68: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
69:
70: va_list args;
71: va_start(args,fmt);
72: char buf[MAX_STRING];
73: const char *prefix="PARSER_ERROR:";
74: strcpy(buf, prefix);
1.47 ! parser 75: char *start=buf+strlen(prefix);
! 76: size_t size=vsnprintf(start, MAX_STRING-strlen(prefix), fmt, args);
! 77: remove_crlf(start, start+size);
! 78:
1.26 paf 79: ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID,
80: HSE_APPEND_LOG_PARAMETER, buf, &size, 0);
81: }
82:
1.9 paf 83: const char *SAPI::get_env(Pool& pool, const char *name) {
1.15 paf 84: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 85:
86: char *variable_buf=(char *)pool.malloc(MAX_STRING);
87: DWORD variable_len = MAX_STRING-1;
88:
1.3 paf 89: if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name),
1.1 paf 90: variable_buf, &variable_len)) {
91: variable_buf[variable_len]=0;
92: return variable_buf;
1.7 paf 93: } else if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) {
94: variable_buf=(char *)pool.malloc(variable_len+1);
95:
96: if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name),
97: variable_buf, &variable_len)) {
98: variable_buf[variable_len]=0;
99: return variable_buf;
100: }
1.1 paf 101: }
1.7 paf 102:
1.1 paf 103: return 0;
104: }
105:
1.26 paf 106: size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) {
1.15 paf 107: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 108:
109: DWORD read_from_buf=0;
110: DWORD read_from_input=0;
111: DWORD total_read=0;
112:
1.3 paf 113: read_from_buf=min(ctx.lpECB->cbAvailable, max_bytes);
114: memcpy(buf, ctx.lpECB->lpbData, read_from_buf);
1.1 paf 115: total_read+=read_from_buf;
116:
117: if(read_from_buf<max_bytes &&
1.3 paf 118: read_from_buf<ctx.lpECB->cbTotalBytes) {
1.1 paf 119: DWORD cbRead=0, cbSize;
120:
1.3 paf 121: read_from_input=min(max_bytes-read_from_buf,
122: ctx.lpECB->cbTotalBytes-read_from_buf);
1.1 paf 123: while(cbRead < read_from_input) {
124: cbSize=read_from_input - cbRead;
1.3 paf 125: if(!ctx.lpECB->ReadClient(ctx.lpECB->ConnID,
126: buf+read_from_buf+cbRead, &cbSize) ||
1.1 paf 127: cbSize==0)
128: break;
129: cbRead+=cbSize;
130: }
131: total_read+=cbRead;
132: }
133: return total_read;
134: }
135:
1.9 paf 136: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.15 paf 137: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.3 paf 138:
139: if(strcasecmp(key, "location")==0)
140: ctx.http_response_code=302;
141:
142: if(strcasecmp(key, "status")==0)
143: ctx.http_response_code=atoi(value);
144: else {
145: ctx.header->APPEND_CONST(key);
146: ctx.header->APPEND_CONST(": ");
147: ctx.header->APPEND_CONST(value);
1.30 paf 148: ctx.header->APPEND_CONST("\r\n");
1.3 paf 149: }
1.1 paf 150: }
151:
1.23 paf 152: /// @todo intelligent cache-control
1.9 paf 153: void SAPI::send_header(Pool& pool) {
1.15 paf 154: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 155:
1.6 paf 156: ctx.header->APPEND_CONST(
1.30 paf 157: "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
158: "\r\n");
1.1 paf 159: HSE_SEND_HEADER_EX_INFO header_info;
160:
161: char status_buf[MAX_STATUS_LENGTH];
1.3 paf 162: switch(ctx.http_response_code) {
1.1 paf 163: case 200:
164: header_info.pszStatus="200 OK";
165: break;
166: case 302:
167: header_info.pszStatus="302 Moved Temporarily";
168: break;
1.8 paf 169: case 401:// useless untill parser auth mech
1.1 paf 170: header_info.pszStatus="401 Authorization Required";
1.8 paf 171: break;
1.1 paf 172: default:
1.3 paf 173: snprintf(status_buf, MAX_STATUS_LENGTH,
174: "%d Undescribed", ctx.http_response_code);
1.1 paf 175: header_info.pszStatus=status_buf;
176: break;
177: }
178: header_info.cchStatus=strlen(header_info.pszStatus);
1.3 paf 179: header_info.pszHeader=ctx.header->cstr();
180: header_info.cchHeader=ctx.header->size();
1.5 paf 181: header_info.fKeepConn=true;
1.1 paf 182:
1.3 paf 183: ctx.lpECB->dwHttpStatusCode=ctx.http_response_code;
1.1 paf 184:
1.3 paf 185: ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID,
186: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 187: }
188:
1.23 paf 189: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.15 paf 190: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 191:
192: DWORD num_bytes=size;
1.3 paf 193: ctx.lpECB->WriteClient(ctx.lpECB->ConnID,
1.23 paf 194: const_cast<void *>(buf), &num_bytes, HSE_IO_SYNC);
1.1 paf 195: }
1.16 paf 196:
1.1 paf 197: //
198:
1.15 paf 199: static bool parser_init() {
1.1 paf 200: static bool globals_inited=false;
201: if(globals_inited)
1.15 paf 202: return true;
1.1 paf 203: globals_inited=true;
204:
1.13 paf 205: static Pool pool(0); // global pool
1.1 paf 206: PTRY {
1.27 paf 207: // init socks
208: init_socks(pool);
209:
1.32 paf 210: // init global classes
211: init_methoded_array(pool);
1.1 paf 212: // init global variables
1.9 paf 213: pa_globals_init(pool);
1.1 paf 214:
1.15 paf 215: // successful finish
216: return true;
1.1 paf 217: } PCATCH(e) { // global problem
1.15 paf 218: //const char *body=e.comment();
219:
220: // unsuccessful finish
221: return false;
1.1 paf 222: }
223: PEND_CATCH
224: }
225:
226: /// ISAPI //
227: BOOL WINAPI GetExtensionVersion(HSE_VERSION_INFO *pVer) {
228: pVer->dwExtensionVersion = HSE_VERSION;
1.36 parser 229: strncpy(pVer->lpszExtensionDesc, "Parser "PARSER_VERSION, HSE_MAX_EXT_DLL_NAME_LEN-1);
230: pVer->lpszExtensionDesc[HSE_MAX_EXT_DLL_NAME_LEN-1]=0;
1.15 paf 231: return parser_init();
1.1 paf 232: }
233:
1.6 paf 234: /**
235: ISAPI // main workhorse
236:
1.23 paf 237: @todo
1.10 paf 238: IIS: remove trailing default-document[index.html] from $request.uri.
239: to do that we need to consult metabase,
1.12 paf 240: wich is tested&works but seems slow runtime
241: and not could-be-quickly-implemented if prepared.
1.37 parser 242: @test
243: PARSER_VERSION from outside
1.6 paf 244: */
1.1 paf 245: DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB) {
1.13 paf 246: Pool_storage pool_storage;
1.15 paf 247: Pool pool(&pool_storage); // no allocations until assigned context [for reporting]
248: SAPI_func_context ctx={
249: lpECB,
1.18 paf 250: 0, // filling later: so that if there would be error pool would have ctx
1.39 parser 251: 200 // default http_response_code
1.15 paf 252: };
1.41 parser 253: _asm nop; // int 3;
1.15 paf 254: pool.set_context(&ctx);// no allocations before this line!
1.2 paf 255:
1.1 paf 256: bool header_only=strcasecmp(lpECB->lpszMethod, "HEAD")==0;
257: PTRY { // global try
1.12 paf 258: ctx.header=new(pool) String(pool);
1.3 paf 259:
1.2 paf 260: // Request info
261: Request::Info request_info;
1.14 paf 262:
263: size_t path_translated_buf_size=strlen(lpECB->lpszPathTranslated)+1;
264: char *filespec_to_process=(char *)malloc(path_translated_buf_size);
265: memcpy(filespec_to_process, lpECB->lpszPathTranslated, path_translated_buf_size);
266: #ifdef WIN32
267: back_slashes_to_slashes(filespec_to_process);
268: #endif
269:
1.11 paf 270: if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
271: // IIS
272: size_t len=strlen(filespec_to_process)-strlen(path_info);
273: char *buf=(char *)pool.malloc(len+1);
1.36 parser 274: strncpy(buf, filespec_to_process, len); buf[len]=0;
1.11 paf 275: request_info.document_root=buf;
276: } else
1.6 paf 277: PTHROW(0, 0,
278: 0,
1.11 paf 279: "ISAPI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)");
1.6 paf 280:
1.11 paf 281: request_info.path_translated=filespec_to_process;
1.2 paf 282: request_info.method=lpECB->lpszMethod;
283: request_info.query_string=lpECB->lpszQueryString;
284: if(lpECB->lpszQueryString && *lpECB->lpszQueryString) {
1.7 paf 285: char *reconstructed_uri=(char *)malloc(
286: strlen(lpECB->lpszPathInfo)+1/*'?'*/+
287: strlen(lpECB->lpszQueryString)+1/*0*/);
288: strcpy(reconstructed_uri, lpECB->lpszPathInfo);
1.2 paf 289: strcat(reconstructed_uri, "?");
1.7 paf 290: strcat(reconstructed_uri, lpECB->lpszQueryString);
1.2 paf 291: request_info.uri=reconstructed_uri;
292: } else
293: request_info.uri=lpECB->lpszPathInfo;
294:
295: request_info.content_type=lpECB->lpszContentType;
296: request_info.content_length=lpECB->cbTotalBytes;
1.9 paf 297: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
1.20 paf 298: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
299:
1.2 paf 300:
301: // prepare to process request
302: Request request(pool,
303: request_info,
1.33 paf 304: String::UL_USER_HTML
1.2 paf 305: );
1.15 paf 306:
1.2 paf 307: // some root-controlled location
1.7 paf 308: // c:\windows
1.42 parser 309: char root_config_path[MAX_STRING];
310: GetWindowsDirectory(root_config_path, MAX_STRING);
1.7 paf 311: // must be dynamic: rethrowing from request.core
312: // may return 'source' which can be inside of 'root auto.p@exeception'
1.42 parser 313: char *root_config_filespec=(char *)pool.malloc(MAX_STRING);
314: snprintf(root_config_filespec, MAX_STRING,
315: "%s/%s",
316: root_config_path, CONFIG_FILE_NAME);
1.4 paf 317:
1.2 paf 318: // process the request
319: request.core(
1.42 parser 320: root_config_filespec, false/*may be abcent*/, // /path/to/admin/auto.p
1.2 paf 321: 0/*parser_site_auto_path*/, false, // /path/to/site/auto.p
322: header_only);
323: // successful finish
1.12 paf 324: } PCATCH(e) { // global problem
325: // don't allocate anything on pool here:
326: // possible pool' exception not catch-ed now
1.31 paf 327: // and there could be out-of-memory exception
1.1 paf 328: const char *body=e.comment();
1.16 paf 329: // log it
330: SAPI::log(pool, "exception in request exception handler: %s", body);
331:
332: //
1.1 paf 333: int content_length=strlen(body);
334:
1.12 paf 335: // prepare header // not using SAPI func wich allocates on pool
336: char header_buf[MAX_STRING];
337: int header_len=snprintf(header_buf, MAX_STRING,
1.30 paf 338: "content-type: text/plain\r\n"
339: "content-length: %lu\r\n"
340: "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
341: "\r\n",
1.12 paf 342: content_length);
343:
344: HSE_SEND_HEADER_EX_INFO header_info;
345: header_info.pszStatus="200 OK";
346: header_info.cchStatus=strlen(header_info.pszStatus);
347: header_info.pszHeader=header_buf;
348: header_info.cchHeader=header_len;
349: header_info.fKeepConn=true;
350:
1.1 paf 351: // send header
1.12 paf 352: lpECB->dwHttpStatusCode=200;
353: lpECB->ServerSupportFunction(lpECB->ConnID,
354: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 355:
356: // send body
357: if(!header_only)
1.9 paf 358: SAPI::send_body(pool, body, content_length);
1.1 paf 359:
360: // unsuccessful finish
361: }
362: PEND_CATCH
363:
1.6 paf 364: return HSE_STATUS_SUCCESS_AND_KEEP_CONN;
1.1 paf 365: }
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