Annotation of parser3/src/targets/isapi/parser3isapi.C, revision 1.43
1.29 paf 1: /** @file
2: Parser: IIS extension.
3:
4: Copyright (c) 2000,2001 ArtLebedev Group (http://www.artlebedev.com)
5:
6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
7: */
1.43 ! parser 8: static const char *RCSId="$Id: parser3isapi.C,v 1.42 2001/09/18 16:05:43 parser 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:
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")
29:
1.18 paf 30: // SAPI
31:
1.38 parser 32: #ifndef DOXYGEN
33: /*
1.18 paf 34: ISAPI SAPI functions receive this context information.
1.38 parser 35: see Pool::set_context
1.18 paf 36: */
1.15 paf 37: struct SAPI_func_context {
1.3 paf 38: LPEXTENSION_CONTROL_BLOCK lpECB;
39: String *header;
40: DWORD http_response_code;
41: };
1.38 parser 42: #endif
1.3 paf 43:
1.26 paf 44: // goes to 'cs-uri-query' log file field. webmaster: switch it ON[default OFF].
45: void SAPI::log(Pool& pool, const char *fmt, ...) {
46: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
47:
48: va_list args;
49: va_start(args,fmt);
50: char buf[MAX_STRING];
51: const char *prefix="PARSER_ERROR:";
52: strcpy(buf, prefix);
53: DWORD size=vsnprintf(buf+strlen(prefix), MAX_STRING-strlen(prefix), fmt, args);
54:
55: ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID,
56: HSE_APPEND_LOG_PARAMETER, buf, &size, 0);
57: }
58:
1.9 paf 59: const char *SAPI::get_env(Pool& pool, const char *name) {
1.15 paf 60: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 61:
62: char *variable_buf=(char *)pool.malloc(MAX_STRING);
63: DWORD variable_len = MAX_STRING-1;
64:
1.3 paf 65: if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name),
1.1 paf 66: variable_buf, &variable_len)) {
67: variable_buf[variable_len]=0;
68: return variable_buf;
1.7 paf 69: } else if (GetLastError()==ERROR_INSUFFICIENT_BUFFER) {
70: variable_buf=(char *)pool.malloc(variable_len+1);
71:
72: if(ctx.lpECB->GetServerVariable(ctx.lpECB->ConnID, const_cast<char *>(name),
73: variable_buf, &variable_len)) {
74: variable_buf[variable_len]=0;
75: return variable_buf;
76: }
1.1 paf 77: }
1.7 paf 78:
1.1 paf 79: return 0;
80: }
81:
1.26 paf 82: size_t SAPI::read_post(Pool& pool, char *buf, size_t max_bytes) {
1.15 paf 83: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 84:
85: DWORD read_from_buf=0;
86: DWORD read_from_input=0;
87: DWORD total_read=0;
88:
1.3 paf 89: read_from_buf=min(ctx.lpECB->cbAvailable, max_bytes);
90: memcpy(buf, ctx.lpECB->lpbData, read_from_buf);
1.1 paf 91: total_read+=read_from_buf;
92:
93: if(read_from_buf<max_bytes &&
1.3 paf 94: read_from_buf<ctx.lpECB->cbTotalBytes) {
1.1 paf 95: DWORD cbRead=0, cbSize;
96:
1.3 paf 97: read_from_input=min(max_bytes-read_from_buf,
98: ctx.lpECB->cbTotalBytes-read_from_buf);
1.1 paf 99: while(cbRead < read_from_input) {
100: cbSize=read_from_input - cbRead;
1.3 paf 101: if(!ctx.lpECB->ReadClient(ctx.lpECB->ConnID,
102: buf+read_from_buf+cbRead, &cbSize) ||
1.1 paf 103: cbSize==0)
104: break;
105: cbRead+=cbSize;
106: }
107: total_read+=cbRead;
108: }
109: return total_read;
110: }
111:
1.9 paf 112: void SAPI::add_header_attribute(Pool& pool, const char *key, const char *value) {
1.15 paf 113: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.3 paf 114:
115: if(strcasecmp(key, "location")==0)
116: ctx.http_response_code=302;
117:
118: if(strcasecmp(key, "status")==0)
119: ctx.http_response_code=atoi(value);
120: else {
121: ctx.header->APPEND_CONST(key);
122: ctx.header->APPEND_CONST(": ");
123: ctx.header->APPEND_CONST(value);
1.30 paf 124: ctx.header->APPEND_CONST("\r\n");
1.3 paf 125: }
1.1 paf 126: }
127:
1.23 paf 128: /// @todo intelligent cache-control
1.9 paf 129: void SAPI::send_header(Pool& pool) {
1.15 paf 130: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 131:
1.6 paf 132: ctx.header->APPEND_CONST(
1.30 paf 133: "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
134: "\r\n");
1.1 paf 135: HSE_SEND_HEADER_EX_INFO header_info;
136:
137: char status_buf[MAX_STATUS_LENGTH];
1.3 paf 138: switch(ctx.http_response_code) {
1.1 paf 139: case 200:
140: header_info.pszStatus="200 OK";
141: break;
142: case 302:
143: header_info.pszStatus="302 Moved Temporarily";
144: break;
1.8 paf 145: case 401:// useless untill parser auth mech
1.1 paf 146: header_info.pszStatus="401 Authorization Required";
1.8 paf 147: break;
1.1 paf 148: default:
1.3 paf 149: snprintf(status_buf, MAX_STATUS_LENGTH,
150: "%d Undescribed", ctx.http_response_code);
1.1 paf 151: header_info.pszStatus=status_buf;
152: break;
153: }
154: header_info.cchStatus=strlen(header_info.pszStatus);
1.3 paf 155: header_info.pszHeader=ctx.header->cstr();
156: header_info.cchHeader=ctx.header->size();
1.5 paf 157: header_info.fKeepConn=true;
1.1 paf 158:
1.3 paf 159: ctx.lpECB->dwHttpStatusCode=ctx.http_response_code;
1.1 paf 160:
1.3 paf 161: ctx.lpECB->ServerSupportFunction(ctx.lpECB->ConnID,
162: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 163: }
164:
1.23 paf 165: void SAPI::send_body(Pool& pool, const void *buf, size_t size) {
1.15 paf 166: SAPI_func_context& ctx=*static_cast<SAPI_func_context *>(pool.context());
1.1 paf 167:
168: DWORD num_bytes=size;
1.3 paf 169: ctx.lpECB->WriteClient(ctx.lpECB->ConnID,
1.23 paf 170: const_cast<void *>(buf), &num_bytes, HSE_IO_SYNC);
1.1 paf 171: }
1.16 paf 172:
1.1 paf 173: //
174:
1.15 paf 175: static bool parser_init() {
1.1 paf 176: static bool globals_inited=false;
177: if(globals_inited)
1.15 paf 178: return true;
1.1 paf 179: globals_inited=true;
180:
1.13 paf 181: static Pool pool(0); // global pool
1.1 paf 182: PTRY {
1.27 paf 183: // init socks
184: init_socks(pool);
185:
1.32 paf 186: // init global classes
187: init_methoded_array(pool);
1.1 paf 188: // init global variables
1.9 paf 189: pa_globals_init(pool);
1.1 paf 190:
1.15 paf 191: // successful finish
192: return true;
1.1 paf 193: } PCATCH(e) { // global problem
1.15 paf 194: //const char *body=e.comment();
195:
196: // unsuccessful finish
197: return false;
1.1 paf 198: }
199: PEND_CATCH
200: }
201:
202: /// ISAPI //
203: BOOL WINAPI GetExtensionVersion(HSE_VERSION_INFO *pVer) {
204: pVer->dwExtensionVersion = HSE_VERSION;
1.36 parser 205: strncpy(pVer->lpszExtensionDesc, "Parser "PARSER_VERSION, HSE_MAX_EXT_DLL_NAME_LEN-1);
206: pVer->lpszExtensionDesc[HSE_MAX_EXT_DLL_NAME_LEN-1]=0;
1.15 paf 207: return parser_init();
1.1 paf 208: }
209:
1.6 paf 210: /**
211: ISAPI // main workhorse
212:
1.23 paf 213: @todo
1.10 paf 214: IIS: remove trailing default-document[index.html] from $request.uri.
215: to do that we need to consult metabase,
1.12 paf 216: wich is tested&works but seems slow runtime
217: and not could-be-quickly-implemented if prepared.
1.37 parser 218: @test
219: PARSER_VERSION from outside
1.6 paf 220: */
1.1 paf 221: DWORD WINAPI HttpExtensionProc(LPEXTENSION_CONTROL_BLOCK lpECB) {
1.13 paf 222: Pool_storage pool_storage;
1.15 paf 223: Pool pool(&pool_storage); // no allocations until assigned context [for reporting]
224: SAPI_func_context ctx={
225: lpECB,
1.18 paf 226: 0, // filling later: so that if there would be error pool would have ctx
1.39 parser 227: 200 // default http_response_code
1.15 paf 228: };
1.41 parser 229: _asm nop; // int 3;
1.15 paf 230: pool.set_context(&ctx);// no allocations before this line!
1.2 paf 231:
1.1 paf 232: bool header_only=strcasecmp(lpECB->lpszMethod, "HEAD")==0;
233: PTRY { // global try
1.12 paf 234: ctx.header=new(pool) String(pool);
1.3 paf 235:
1.2 paf 236: // Request info
237: Request::Info request_info;
1.14 paf 238:
239: size_t path_translated_buf_size=strlen(lpECB->lpszPathTranslated)+1;
240: char *filespec_to_process=(char *)malloc(path_translated_buf_size);
241: memcpy(filespec_to_process, lpECB->lpszPathTranslated, path_translated_buf_size);
242: #ifdef WIN32
243: back_slashes_to_slashes(filespec_to_process);
244: #endif
245:
1.11 paf 246: if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
247: // IIS
248: size_t len=strlen(filespec_to_process)-strlen(path_info);
249: char *buf=(char *)pool.malloc(len+1);
1.36 parser 250: strncpy(buf, filespec_to_process, len); buf[len]=0;
1.11 paf 251: request_info.document_root=buf;
252: } else
1.6 paf 253: PTHROW(0, 0,
254: 0,
1.11 paf 255: "ISAPI: no PATH_INFO defined (in reinventing DOCUMENT_ROOT)");
1.6 paf 256:
1.11 paf 257: request_info.path_translated=filespec_to_process;
1.2 paf 258: request_info.method=lpECB->lpszMethod;
259: request_info.query_string=lpECB->lpszQueryString;
260: if(lpECB->lpszQueryString && *lpECB->lpszQueryString) {
1.7 paf 261: char *reconstructed_uri=(char *)malloc(
262: strlen(lpECB->lpszPathInfo)+1/*'?'*/+
263: strlen(lpECB->lpszQueryString)+1/*0*/);
264: strcpy(reconstructed_uri, lpECB->lpszPathInfo);
1.2 paf 265: strcat(reconstructed_uri, "?");
1.7 paf 266: strcat(reconstructed_uri, lpECB->lpszQueryString);
1.2 paf 267: request_info.uri=reconstructed_uri;
268: } else
269: request_info.uri=lpECB->lpszPathInfo;
270:
271: request_info.content_type=lpECB->lpszContentType;
272: request_info.content_length=lpECB->cbTotalBytes;
1.9 paf 273: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
1.20 paf 274: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
275:
1.2 paf 276:
277: // prepare to process request
278: Request request(pool,
279: request_info,
1.33 paf 280: String::UL_USER_HTML
1.2 paf 281: );
1.15 paf 282:
1.2 paf 283: // some root-controlled location
1.7 paf 284: // c:\windows
1.42 parser 285: char root_config_path[MAX_STRING];
286: GetWindowsDirectory(root_config_path, MAX_STRING);
1.7 paf 287: // must be dynamic: rethrowing from request.core
288: // may return 'source' which can be inside of 'root auto.p@exeception'
1.42 parser 289: char *root_config_filespec=(char *)pool.malloc(MAX_STRING);
290: snprintf(root_config_filespec, MAX_STRING,
291: "%s/%s",
292: root_config_path, CONFIG_FILE_NAME);
1.4 paf 293:
1.2 paf 294: // process the request
295: request.core(
1.42 parser 296: root_config_filespec, false/*may be abcent*/, // /path/to/admin/auto.p
1.2 paf 297: 0/*parser_site_auto_path*/, false, // /path/to/site/auto.p
298: header_only);
299: // successful finish
1.12 paf 300: } PCATCH(e) { // global problem
301: // don't allocate anything on pool here:
302: // possible pool' exception not catch-ed now
1.31 paf 303: // and there could be out-of-memory exception
1.1 paf 304: const char *body=e.comment();
1.16 paf 305: // log it
306: SAPI::log(pool, "exception in request exception handler: %s", body);
307:
308: //
1.1 paf 309: int content_length=strlen(body);
310:
1.12 paf 311: // prepare header // not using SAPI func wich allocates on pool
312: char header_buf[MAX_STRING];
313: int header_len=snprintf(header_buf, MAX_STRING,
1.30 paf 314: "content-type: text/plain\r\n"
315: "content-length: %lu\r\n"
316: "expires: Fri, 23 Mar 2001 09:32:23 GMT\r\n"
317: "\r\n",
1.12 paf 318: content_length);
319:
320: HSE_SEND_HEADER_EX_INFO header_info;
321: header_info.pszStatus="200 OK";
322: header_info.cchStatus=strlen(header_info.pszStatus);
323: header_info.pszHeader=header_buf;
324: header_info.cchHeader=header_len;
325: header_info.fKeepConn=true;
326:
1.1 paf 327: // send header
1.12 paf 328: lpECB->dwHttpStatusCode=200;
329: lpECB->ServerSupportFunction(lpECB->ConnID,
330: HSE_REQ_SEND_RESPONSE_HEADER_EX, &header_info, NULL, NULL);
1.1 paf 331:
332: // send body
333: if(!header_only)
1.9 paf 334: SAPI::send_body(pool, body, content_length);
1.1 paf 335:
336: // unsuccessful finish
337: }
338: PEND_CATCH
339:
1.6 paf 340: return HSE_STATUS_SUCCESS_AND_KEEP_CONN;
1.1 paf 341: }
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