Annotation of parser3/src/targets/cgi/parser3.C, revision 1.169
1.27 paf 1: /** @file
2: Parser: scripting and CGI main.
3:
1.155 paf 4: Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.154 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.27 paf 6:
1.169 ! paf 7: $Id: parser3.C,v 1.168 2002/04/09 08:10:37 paf Exp $
1.1 paf 8: */
9:
1.40 paf 10: #include "pa_config_includes.h"
1.3 paf 11:
1.139 paf 12: #if _MSC_VER
1.131 paf 13: # include <new.h>
1.148 paf 14: # include <crtdbg.h>
1.151 paf 15: #else
16: # include "pa_config_paths.h"
1.3 paf 17: #endif
1.27 paf 18:
1.37 paf 19: #include "pa_sapi.h"
1.76 paf 20: #include "classes.h"
1.24 paf 21: #include "pa_common.h"
1.2 paf 22: #include "pa_request.h"
1.57 paf 23: #include "pa_socks.h"
1.68 paf 24: #include "pa_version.h"
1.125 parser 25: #include "pool_storage.h"
1.69 paf 26:
1.149 paf 27: #ifdef WIN32
28: # include <windows.h>
1.120 parser 29: #endif
30:
1.158 paf 31: //#define DEBUG_POOL_MALLOC
1.162 paf 32: //#define DEBUG_STRING_APPENDS_VS_EXPANDS
1.160 paf 33:
34: #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS
35: extern ulong
36: string_piece_appends,
37: wcontext_result_size,
38: total_alloc_size,
39: string_string_shortcut_economy;
40: #endif
1.84 parser 41:
1.109 parser 42: // consts
1.113 parser 43:
44: extern const char *main_RCSIds[];
1.116 parser 45: #ifdef USE_SMTP
1.113 parser 46: extern const char *smtp_RCSIds[];
1.114 parser 47: #endif
1.113 parser 48: extern const char *gd_RCSIds[];
49: extern const char *classes_RCSIds[];
50: extern const char *types_RCSIds[];
1.115 parser 51: extern const char *parser3_RCSIds[];
1.113 parser 52: const char **RCSIds[]={
53: main_RCSIds,
1.116 parser 54: #ifdef USE_SMTP
1.113 parser 55: smtp_RCSIds,
1.114 parser 56: #endif
1.113 parser 57: gd_RCSIds,
58: classes_RCSIds,
59: types_RCSIds,
1.115 parser 60: parser3_RCSIds,
1.113 parser 61: 0
62: };
1.84 parser 63:
1.164 paf 64: const char *PARSER_ROOT_CONFIG_ENV_NAME="HTTP_PARSER_ROOT_CONFIG";
65: const char *PARSER_SITE_CONFIG_ENV_NAME="HTTP_PARSER_SITE_CONFIG";
1.159 paf 66:
1.42 paf 67: /// IIS refuses to read bigger chunks
68: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
69:
1.45 paf 70: const char *argv0;
1.125 parser 71: Pool_storage pool_storage;
72: Pool pool(&pool_storage); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 73: bool cgi; ///< we were started as CGI?
1.5 paf 74:
1.46 paf 75: // SAPI
1.86 parser 76:
1.124 parser 77: static void log(const char *fmt, va_list args) {
1.61 paf 78: bool opened;
79: FILE *f=0;
80:
81: if(argv0) {
82: // beside by binary
83: char file_spec[MAX_STRING];
1.98 parser 84: strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary
1.61 paf 85: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
86: strcat(file_spec, "/parser3.log");
87: f=fopen(file_spec, "at");
88: }
89: opened=f!=0;
90: if(!opened)
91: f=stderr;
92:
93: // prefix
94: time_t t=time(0);
95: const char *stamp=ctime(&t);
96: fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
97: // message
1.117 parser 98:
99: char buf[MAX_STRING];
100: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
101: remove_crlf(buf, buf+size);
102:
103: fwrite(buf, size, 1, f);
1.61 paf 104: // newline
105: fprintf(f, "\n");
106:
107: if(opened)
108: fclose(f);
1.85 parser 109: else
110: fflush(f);
1.124 parser 111: }
112:
113: // appends to parser3.log located beside my binary if openable, to stderr otherwize
114: void SAPI::log(Pool& , const char *fmt, ...) {
115: va_list args;
116: va_start(args,fmt);
117: ::log(fmt, args);
118: va_end(args);
119: }
120:
121: void SAPI::die(const char *fmt, ...) {
1.137 paf 122: #ifdef DEBUG_POOL_MALLOC
123: extern void log_pool_stats(Pool& pool);
124: log_pool_stats(pool);
125: #endif
126:
1.144 paf 127: va_list args;
128: va_start(args,fmt);
1.138 paf 129: // log
130:
131: // logging is more important than user
132: // she can cancel download, we'd get SIG_PIPE,
133: // nothing would be logged then
1.124 parser 134: ::log(fmt, args);
135:
1.138 paf 136: // inform user
137:
1.134 paf 138: char body[MAX_STRING];
1.138 paf 139: int content_length=vsnprintf(body, MAX_STRING, fmt, args);
1.134 paf 140:
1.144 paf 141: va_end(args);
142:
1.134 paf 143: // prepare header
144: // let's be honest, that's bad we couldn't produce valid output
145: SAPI::add_header_attribute(pool, "status", "500");
146: SAPI::add_header_attribute(pool, "content-type", "text/plain");
147: char content_length_cstr[MAX_NUMBER];
1.168 paf 148: snprintf(content_length_cstr, sizeof(content_length_cstr), "%u", content_length);
1.134 paf 149: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
150:
151: // send header
152: SAPI::send_header(pool);
153:
154: // body
155: SAPI::send_body(pool, body, content_length);
156:
1.124 parser 157: exit(1);
1.61 paf 158: }
159:
1.122 parser 160: const char *SAPI::get_env(Pool& , const char *name) {
1.109 parser 161: return getenv(name);
1.28 paf 162: }
163:
1.122 parser 164: size_t SAPI::read_post(Pool& , char *buf, size_t max_bytes) {
1.59 paf 165: size_t read_size=0;
1.12 paf 166: do {
1.36 paf 167: int chunk_size=read(fileno(stdin),
1.42 paf 168: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.129 paf 169: if(chunk_size<=0)
1.12 paf 170: break;
171: read_size+=chunk_size;
172: } while(read_size<max_bytes);
173:
174: return read_size;
1.10 paf 175: }
176:
1.122 parser 177: void SAPI::add_header_attribute(Pool& , const char *key, const char *value) {
1.68 paf 178: if(cgi)
1.20 paf 179: printf("%s: %s\n", key, value);
1.19 paf 180: }
181:
1.56 paf 182: /// @todo intelligent cache-control
1.122 parser 183: void SAPI::send_header(Pool& ) {
1.33 paf 184: if(cgi) {
1.147 paf 185: // puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 186:
187: // header | body delimiter
1.20 paf 188: puts("");
1.33 paf 189: }
1.30 paf 190: }
1.20 paf 191:
1.122 parser 192: void SAPI::send_body(Pool& , const void *buf, size_t size) {
1.19 paf 193: stdout_write(buf, size);
1.58 paf 194: }
195:
1.97 parser 196: //
197:
1.166 paf 198: void full_file_spec(const char *file_name, char *buf, size_t buf_size) {
1.167 paf 199: if(file_name)
200: if(file_name[0]=='/'
201: #ifdef WIN32
202: || (file_name[0] && file_name[1]==':')
203: #endif
204: )
205: strncpy(buf, file_name, buf_size);
206: else {
207: char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
208: snprintf(buf, buf_size, "%s/%s", cwd, file_name);
209: }
210: else
211: buf[0]=0;
1.166 paf 212: #ifdef WIN32
213: back_slashes_to_slashes(buf);
214: #endif
1.97 parser 215: }
216:
1.40 paf 217: /**
1.122 parser 218: main workhorse
1.19 paf 219:
1.122 parser 220: @todo
1.40 paf 221: IIS: remove trailing default-document[index.html] from $request.uri.
222: to do that we need to consult metabase,
223: wich is tested but seems slow.
1.144 paf 224: IIS5 todo find out proper 'illegal call' check
1.40 paf 225: */
1.122 parser 226: void real_parser_handler(
227: const char *filespec_to_process,
228: const char *request_method, bool header_only) {
229: // init socks
230: init_socks(pool);
231:
232: // init global classes
233: init_methoded_array(pool);
234: // init global variables
235: pa_globals_init(pool);
236:
237: if(!filespec_to_process)
1.144 paf 238: SAPI::die("Parser/%s", PARSER_VERSION);
1.122 parser 239:
240: // Request info
241: Request::Info request_info;
1.166 paf 242: char document_root_buf[MAX_STRING];
1.122 parser 243: if(cgi) {
244: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
245: request_info.document_root=env_document_root;
246: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
247: // IIS
1.166 paf 248: size_t len=min(sizeof(document_root_buf)-1, strlen(filespec_to_process)-strlen(path_info));
249: memcpy(document_root_buf, filespec_to_process, len); document_root_buf[len]=0;
250: request_info.document_root=document_root_buf;
1.122 parser 251: } else
1.165 paf 252: throw Exception("parser.runtime",
253: 0,
254: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.122 parser 255: } else {
1.166 paf 256: full_file_spec("", document_root_buf, sizeof(document_root_buf));
257: request_info.document_root=document_root_buf;
1.122 parser 258: }
259: request_info.path_translated=filespec_to_process;
260: request_info.method=request_method ? request_method : "GET";
261: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
262: request_info.query_string=query_string;
263: if(cgi) {
264: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
265: request_info.uri=env_request_uri;
266: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
267: if(query_string) {
268: char *reconstructed_uri=(char *)pool.malloc(
269: strlen(path_info)+1/*'?'*/+
270: strlen(query_string)+1/*0*/);
271: strcpy(reconstructed_uri, path_info);
272: strcat(reconstructed_uri, "?");
273: strcat(reconstructed_uri, query_string);
274: request_info.uri=reconstructed_uri;
275: } else
276: request_info.uri=path_info;
277: else
1.165 paf 278: throw Exception("parser.runtime",
279: 0,
280: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.145 paf 281:
282: #ifndef WIN32
283: // they've changed this under IIS5.
1.122 parser 284: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
285: size_t script_name_len=strlen(script_name);
286: size_t uri_len=strlen(request_info.uri);
287: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
288: script_name_len != uri_len) // under IIS they are the same
1.144 paf 289: SAPI::die("CGI: illegal call");
1.122 parser 290: }
1.145 paf 291: #endif
1.122 parser 292: } else
293: request_info.uri=0;
294:
295: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
296: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
297: request_info.content_length=(content_length?atoi(content_length):0);
298: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
299: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
300:
301: // prepare to process request
302: Request request(pool,
303: request_info,
1.143 paf 304: #ifdef _DEBUG
305: String::UL_HTML|String::UL_OPTIMIZE_BIT
306: #else
307: cgi ? String::UL_HTML|String::UL_OPTIMIZE_BIT : String::UL_AS_IS
308: #endif
309: ,
1.130 paf 310: true /* status_allowed */);
1.122 parser 311:
312: // some root-controlled location
1.169 ! paf 313: const char *root_config_filespec_cstr;
! 314: char root_config_filespec_buf[MAX_STRING];
1.159 paf 315: if(const char *root_config_by_env=getenv(PARSER_ROOT_CONFIG_ENV_NAME))
1.169 ! paf 316: root_config_filespec_cstr=root_config_by_env;
1.159 paf 317: else {
1.152 paf 318: #ifdef ROOT_CONFIG_DIR
1.169 ! paf 319: root_config_filespec_cstr=ROOT_CONFIG_DIR "/" CONFIG_FILE_NAME;
1.122 parser 320: #else
321: # ifdef WIN32
1.159 paf 322: // c:\windows
323: char windows_dir[MAX_STRING];
324: GetWindowsDirectory(windows_dir, MAX_STRING);
325:
1.169 ! paf 326:
! 327: snprintf(root_config_filespec_buf, MAX_STRING,
1.159 paf 328: "%s/%s",
329: windows_dir, CONFIG_FILE_NAME);
330:
1.169 ! paf 331: root_config_filespec_cstr=root_config_filespec_buf;
1.122 parser 332: # else
333: #error must be compiled either configure/make or MSVC++
334: # endif
335: #endif
1.159 paf 336: }
1.122 parser 337:
1.169 ! paf 338: const char *site_config_filespec_cstr;
! 339: char site_config_filespec_buf[MAX_STRING];
1.164 paf 340: if(const char *site_config_by_env=getenv(PARSER_SITE_CONFIG_ENV_NAME))
1.169 ! paf 341: site_config_filespec_cstr=site_config_by_env;
1.164 paf 342: else {
1.122 parser 343: // beside by binary
344: // @todo full path, not ./!
1.164 paf 345: char beside_binary_path[MAX_STRING];
346: strncpy(beside_binary_path, argv0, MAX_STRING-1); beside_binary_path[MAX_STRING-1]=0; // filespec of my binary
347: if(!(
348: rsplit(beside_binary_path, '/') ||
349: rsplit(beside_binary_path, '\\'))) { // strip filename
350: // no path, just filename
351: beside_binary_path[0]='.'; beside_binary_path[1]=0;
352: }
1.169 ! paf 353: snprintf(site_config_filespec_buf, MAX_STRING,
1.164 paf 354: "%s/%s",
355: beside_binary_path, CONFIG_FILE_NAME);
1.169 ! paf 356: site_config_filespec_cstr=site_config_filespec_buf;
1.122 parser 357: }
358:
359: // process the request
360: request.core(
1.169 ! paf 361: root_config_filespec_cstr, true/*fail_on_read_problem*/,
! 362: site_config_filespec_cstr, true /*fail_on_read_problem*/,
1.122 parser 363: header_only);
364:
365: //
366: done_socks();
367:
368: #ifdef DEBUG_POOL_MALLOC
369: extern void log_pool_stats(Pool& pool);
370: log_pool_stats(pool);
371: #endif
1.160 paf 372:
373: #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS
374: SAPI::log(pool,
1.161 paf 375: "string piece appends=%lu, wcontext_result_size=%lu, string_string_shortcut_economy_closer=%lu, total_alloc_size=%lu",
1.160 paf 376: string_piece_appends,
377: wcontext_result_size,
378: string_string_shortcut_economy,
379: total_alloc_size);
380: #endif
381:
1.122 parser 382: }
383:
384: void call_real_parser_handler__do_SEH(
385: const char *filespec_to_process,
386: const char *request_method, bool header_only) {
1.133 paf 387: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 388: LPEXCEPTION_POINTERS system_exception=0;
389: __try {
390: #endif
391: real_parser_handler(
392: filespec_to_process,
393: request_method, header_only);
394:
1.133 paf 395: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 396: } __except (
397: (system_exception=GetExceptionInformation()),
398: EXCEPTION_EXECUTE_HANDLER) {
399:
400: if(system_exception)
401: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.165 paf 402: throw Exception(0,
403: 0,
404: "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.122 parser 405: else
1.165 paf 406: throw Exception(0, 0, "Exception <no exception record>");
1.122 parser 407: else
1.165 paf 408: throw Exception(0, 0, "Exception <no exception information>");
1.122 parser 409: }
410: #endif
411: }
412:
1.139 paf 413: #if _MSC_VER
1.135 paf 414: int failed_new(size_t size) {
415: SAPI::die("out of memory in 'new', failed to allocated %u bytes", size);
416: return 0; // not reached
1.131 paf 417: }
1.135 paf 418: #endif
1.131 paf 419:
1.135 paf 420: #ifdef HAVE_SET_NEW_HANDLER
1.134 paf 421: void failed_new() {
1.135 paf 422: SAPI::die("out of memory in 'new'");
1.131 paf 423: }
424: #endif
425:
1.5 paf 426: int main(int argc, char *argv[]) {
1.144 paf 427: // _asm int 3;
1.45 paf 428: argv0=argv[0];
429:
1.32 paf 430: umask(2);
431:
1.3 paf 432: // were we started as CGI?
1.146 paf 433: cgi=
1.109 parser 434: getenv("SERVER_SOFTWARE") ||
435: getenv("SERVER_NAME") ||
436: getenv("GATEWAY_INTERFACE") ||
437: getenv("REQUEST_METHOD");
1.5 paf 438:
1.10 paf 439: if(!cgi) {
440: if(argc<2) {
1.69 paf 441: printf(
1.155 paf 442: "Parser/%s Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)\n"
1.154 paf 443: "Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
1.100 parser 444: "\n"
445: "Usage: %s <file>\n",
1.69 paf 446: PARSER_VERSION,
447: argv0?argv0:"parser3");
1.67 paf 448: return 1;
1.10 paf 449: }
450: }
451:
1.100 parser 452: #ifdef WIN32
453: setmode(fileno(stdin), _O_BINARY);
454: setmode(fileno(stdout), _O_BINARY);
455: setmode(fileno(stderr), _O_BINARY);
456: #endif
457:
1.139 paf 458: #if _MSC_VER
1.138 paf 459: _set_new_handler(failed_new);
1.148 paf 460:
461: #ifdef _DEBUG
462: // Get current flag
463: int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
464:
465: // Turn on leak-checking bit
466: tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
467:
468: // Set flag to the new value
469: _CrtSetDbgFlag( tmpFlag );
470: // _CrtSetBreakAlloc(471);
471:
472: #endif
473:
1.138 paf 474: #endif
475:
476: #ifdef HAVE_SET_NEW_HANDLER
477: std::set_new_handler(failed_new);
478: #endif
479:
1.166 paf 480: char *raw_filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
481: char filespec_to_process[MAX_STRING];
482: full_file_spec(raw_filespec_to_process, filespec_to_process, sizeof(filespec_to_process));
1.10 paf 483:
1.109 parser 484: const char *request_method=getenv("REQUEST_METHOD");
1.35 paf 485: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.131 paf 486:
1.122 parser 487: try { // global try
488: call_real_parser_handler__do_SEH(
489: filespec_to_process,
490: request_method, header_only);
491: } catch(const Exception& e) { // global problem
1.44 paf 492: // don't allocate anything on pool here:
493: // possible pool' exception not catch-ed now
494: // and there could be out-of-memory exception
1.43 paf 495:
1.144 paf 496: SAPI::die("exception in request exception handler: %s", e.comment());
1.134 paf 497: #ifndef _DEBUG
1.131 paf 498: } catch(...) {
1.134 paf 499: SAPI::die("<unknown exception>");
1.133 paf 500: #endif
1.16 paf 501: }
1.122 parser 502:
1.109 parser 503:
504: #ifndef WIN32
505: //
506: if(!cgi)
507: SAPI::send_body(pool, "\n", 1);
508: #endif
1.156 paf 509: //_asm int 3;
1.134 paf 510: return 0;
1.1 paf 511: }
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