Annotation of parser3/src/targets/cgi/parser3.C, revision 1.180
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:
1.180 ! paf 7: $Id: parser3.C,v 1.179 2002/06/03 15:02:41 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:
1.174 paf 44: #ifndef _PROFILE
1.113 parser 45: extern const char *main_RCSIds[];
1.116 parser 46: #ifdef USE_SMTP
1.113 parser 47: extern const char *smtp_RCSIds[];
1.114 parser 48: #endif
1.113 parser 49: extern const char *gd_RCSIds[];
50: extern const char *classes_RCSIds[];
51: extern const char *types_RCSIds[];
1.115 parser 52: extern const char *parser3_RCSIds[];
1.113 parser 53: const char **RCSIds[]={
54: main_RCSIds,
1.116 parser 55: #ifdef USE_SMTP
1.113 parser 56: smtp_RCSIds,
1.114 parser 57: #endif
1.113 parser 58: gd_RCSIds,
59: classes_RCSIds,
60: types_RCSIds,
1.115 parser 61: parser3_RCSIds,
1.113 parser 62: 0
63: };
1.174 paf 64: #endif
1.84 parser 65:
1.175 paf 66: #define REDIRECT_PREFIX "REDIRECT_"
67: #define PARSER_ROOT_CONFIG_ENV_NAME "HTTP_PARSER_ROOT_CONFIG"
68: #define PARSER_SITE_CONFIG_ENV_NAME "HTTP_PARSER_SITE_CONFIG"
1.159 paf 69:
1.42 paf 70: /// IIS refuses to read bigger chunks
71: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
72:
1.45 paf 73: const char *argv0;
1.178 paf 74: Pool *pool; // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 75: bool cgi; ///< we were started as CGI?
1.5 paf 76:
1.46 paf 77: // SAPI
1.86 parser 78:
1.124 parser 79: static void log(const char *fmt, va_list args) {
1.61 paf 80: bool opened;
81: FILE *f=0;
82:
83: if(argv0) {
84: // beside by binary
85: char file_spec[MAX_STRING];
1.98 parser 86: strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary
1.61 paf 87: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
88: strcat(file_spec, "/parser3.log");
89: f=fopen(file_spec, "at");
90: }
91: opened=f!=0;
92: if(!opened)
93: f=stderr;
94:
95: // prefix
96: time_t t=time(0);
1.171 paf 97: if(const char *stamp=ctime(&t)) { // never saw that
1.173 paf 98: if(size_t len=strlen(stamp)) // saw once stamp being =""
1.172 paf 99: fprintf(f, "[%.*s] ", len-1, stamp);
1.171 paf 100: }
1.61 paf 101: // message
1.117 parser 102:
103: char buf[MAX_STRING];
104: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
105: remove_crlf(buf, buf+size);
106:
107: fwrite(buf, size, 1, f);
1.61 paf 108: // newline
109: fprintf(f, "\n");
110:
111: if(opened)
112: fclose(f);
1.85 parser 113: else
114: fflush(f);
1.124 parser 115: }
116:
117: // appends to parser3.log located beside my binary if openable, to stderr otherwize
118: void SAPI::log(Pool& , const char *fmt, ...) {
119: va_list args;
120: va_start(args,fmt);
121: ::log(fmt, args);
122: va_end(args);
123: }
124:
125: void SAPI::die(const char *fmt, ...) {
1.137 paf 126: #ifdef DEBUG_POOL_MALLOC
127: extern void log_pool_stats(Pool& pool);
1.178 paf 128: log_pool_stats(*pool);
1.137 paf 129: #endif
130:
1.144 paf 131: va_list args;
132: va_start(args,fmt);
1.138 paf 133: // log
134:
135: // logging is more important than user
136: // she can cancel download, we'd get SIG_PIPE,
137: // nothing would be logged then
1.124 parser 138: ::log(fmt, args);
139:
1.138 paf 140: // inform user
141:
1.134 paf 142: char body[MAX_STRING];
1.138 paf 143: int content_length=vsnprintf(body, MAX_STRING, fmt, args);
1.134 paf 144:
1.144 paf 145: va_end(args);
146:
1.134 paf 147: // prepare header
148: // let's be honest, that's bad we couldn't produce valid output
1.178 paf 149: SAPI::add_header_attribute(*pool, "status", "500");
150: SAPI::add_header_attribute(*pool, "content-type", "text/plain");
1.134 paf 151: char content_length_cstr[MAX_NUMBER];
1.168 paf 152: snprintf(content_length_cstr, sizeof(content_length_cstr), "%u", content_length);
1.178 paf 153: SAPI::add_header_attribute(*pool, "content-length", content_length_cstr);
1.134 paf 154:
155: // send header
1.178 paf 156: SAPI::send_header(*pool);
1.134 paf 157:
158: // body
1.178 paf 159: SAPI::send_body(*pool, body, content_length);
1.134 paf 160:
1.124 parser 161: exit(1);
1.61 paf 162: }
163:
1.122 parser 164: const char *SAPI::get_env(Pool& , const char *name) {
1.109 parser 165: return getenv(name);
1.28 paf 166: }
167:
1.180 ! paf 168: const char *const *SAPI::environment(Pool&) {
! 169: #ifdef _MSC_VER
! 170: extern char **_environ;
! 171: return _environ;
! 172: #else
! 173: extern char **environ;
! 174: return environ;
! 175: #endif
! 176: }
! 177:
1.122 parser 178: size_t SAPI::read_post(Pool& , char *buf, size_t max_bytes) {
1.59 paf 179: size_t read_size=0;
1.12 paf 180: do {
1.36 paf 181: int chunk_size=read(fileno(stdin),
1.42 paf 182: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.129 paf 183: if(chunk_size<=0)
1.12 paf 184: break;
185: read_size+=chunk_size;
186: } while(read_size<max_bytes);
187:
188: return read_size;
1.10 paf 189: }
190:
1.122 parser 191: void SAPI::add_header_attribute(Pool& , const char *key, const char *value) {
1.68 paf 192: if(cgi)
1.20 paf 193: printf("%s: %s\n", key, value);
1.19 paf 194: }
195:
1.56 paf 196: /// @todo intelligent cache-control
1.122 parser 197: void SAPI::send_header(Pool& ) {
1.33 paf 198: if(cgi) {
1.147 paf 199: // puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 200:
201: // header | body delimiter
1.20 paf 202: puts("");
1.33 paf 203: }
1.30 paf 204: }
1.20 paf 205:
1.122 parser 206: void SAPI::send_body(Pool& , const void *buf, size_t size) {
1.19 paf 207: stdout_write(buf, size);
1.58 paf 208: }
209:
1.97 parser 210: //
211:
1.166 paf 212: void full_file_spec(const char *file_name, char *buf, size_t buf_size) {
1.167 paf 213: if(file_name)
214: if(file_name[0]=='/'
215: #ifdef WIN32
216: || (file_name[0] && file_name[1]==':')
217: #endif
218: )
219: strncpy(buf, file_name, buf_size);
220: else {
221: char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
222: snprintf(buf, buf_size, "%s/%s", cwd, file_name);
223: }
224: else
225: buf[0]=0;
1.166 paf 226: #ifdef WIN32
227: back_slashes_to_slashes(buf);
228: #endif
1.97 parser 229: }
230:
1.40 paf 231: /**
1.122 parser 232: main workhorse
1.19 paf 233:
1.122 parser 234: @todo
1.40 paf 235: IIS: remove trailing default-document[index.html] from $request.uri.
236: to do that we need to consult metabase,
237: wich is tested but seems slow.
1.144 paf 238: IIS5 todo find out proper 'illegal call' check
1.40 paf 239: */
1.122 parser 240: void real_parser_handler(
241: const char *filespec_to_process,
242: const char *request_method, bool header_only) {
243: // init socks
1.178 paf 244: init_socks(*pool);
1.122 parser 245:
246: // init global classes
1.178 paf 247: init_methoded_array(*pool);
1.122 parser 248: // init global variables
1.178 paf 249: pa_globals_init(*pool);
1.122 parser 250:
251: if(!filespec_to_process)
1.144 paf 252: SAPI::die("Parser/%s", PARSER_VERSION);
1.122 parser 253:
254: // Request info
255: Request::Info request_info;
1.166 paf 256: char document_root_buf[MAX_STRING];
1.122 parser 257: if(cgi) {
1.178 paf 258: if(const char *env_document_root=SAPI::get_env(*pool, "DOCUMENT_ROOT"))
1.122 parser 259: request_info.document_root=env_document_root;
1.178 paf 260: else if(const char *path_info=SAPI::get_env(*pool, "PATH_INFO")) {
1.122 parser 261: // IIS
1.166 paf 262: size_t len=min(sizeof(document_root_buf)-1, strlen(filespec_to_process)-strlen(path_info));
263: memcpy(document_root_buf, filespec_to_process, len); document_root_buf[len]=0;
264: request_info.document_root=document_root_buf;
1.122 parser 265: } else
1.165 paf 266: throw Exception("parser.runtime",
267: 0,
268: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.122 parser 269: } else {
1.166 paf 270: full_file_spec("", document_root_buf, sizeof(document_root_buf));
271: request_info.document_root=document_root_buf;
1.122 parser 272: }
273: request_info.path_translated=filespec_to_process;
274: request_info.method=request_method ? request_method : "GET";
1.178 paf 275: const char *query_string=SAPI::get_env(*pool, "QUERY_STRING");
1.122 parser 276: request_info.query_string=query_string;
277: if(cgi) {
1.178 paf 278: if(const char *env_request_uri=SAPI::get_env(*pool, "REQUEST_URI"))
1.122 parser 279: request_info.uri=env_request_uri;
1.178 paf 280: else if(const char *path_info=SAPI::get_env(*pool, "PATH_INFO"))
1.122 parser 281: if(query_string) {
1.178 paf 282: char *reconstructed_uri=(char *)pool->malloc(
1.122 parser 283: strlen(path_info)+1/*'?'*/+
284: strlen(query_string)+1/*0*/);
285: strcpy(reconstructed_uri, path_info);
286: strcat(reconstructed_uri, "?");
287: strcat(reconstructed_uri, query_string);
288: request_info.uri=reconstructed_uri;
289: } else
290: request_info.uri=path_info;
1.179 paf 291: else
292: throw Exception("parser.runtime",
293: 0,
294: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.145 paf 295:
296: #ifndef WIN32
297: // they've changed this under IIS5.
1.178 paf 298: if(const char *script_name=SAPI::get_env(*pool, "SCRIPT_NAME")) {
1.122 parser 299: size_t script_name_len=strlen(script_name);
300: size_t uri_len=strlen(request_info.uri);
301: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
302: script_name_len != uri_len) // under IIS they are the same
1.144 paf 303: SAPI::die("CGI: illegal call");
1.122 parser 304: }
1.145 paf 305: #endif
1.122 parser 306: } else
1.177 paf 307: request_info.uri="";
1.122 parser 308:
1.178 paf 309: request_info.content_type=SAPI::get_env(*pool, "CONTENT_TYPE");
310: const char *content_length=SAPI::get_env(*pool, "CONTENT_LENGTH");
1.122 parser 311: request_info.content_length=(content_length?atoi(content_length):0);
1.178 paf 312: request_info.cookie=SAPI::get_env(*pool, "HTTP_COOKIE");
1.122 parser 313:
314: // prepare to process request
1.178 paf 315: Request request(*pool,
1.122 parser 316: request_info,
1.143 paf 317: #ifdef _DEBUG
318: String::UL_HTML|String::UL_OPTIMIZE_BIT
319: #else
320: cgi ? String::UL_HTML|String::UL_OPTIMIZE_BIT : String::UL_AS_IS
321: #endif
322: ,
1.130 paf 323: true /* status_allowed */);
1.122 parser 324:
325: // some root-controlled location
1.169 paf 326: const char *root_config_filespec_cstr;
327: char root_config_filespec_buf[MAX_STRING];
1.175 paf 328: const char *root_config_by_env=getenv(PARSER_ROOT_CONFIG_ENV_NAME);
329: if(!root_config_by_env)
330: root_config_by_env=getenv(REDIRECT_PREFIX PARSER_ROOT_CONFIG_ENV_NAME);
331: if(root_config_by_env)
1.169 paf 332: root_config_filespec_cstr=root_config_by_env;
1.159 paf 333: else {
1.152 paf 334: #ifdef ROOT_CONFIG_DIR
1.169 paf 335: root_config_filespec_cstr=ROOT_CONFIG_DIR "/" CONFIG_FILE_NAME;
1.122 parser 336: #else
337: # ifdef WIN32
1.159 paf 338: // c:\windows
339: char windows_dir[MAX_STRING];
340: GetWindowsDirectory(windows_dir, MAX_STRING);
341:
1.169 paf 342:
343: snprintf(root_config_filespec_buf, MAX_STRING,
1.159 paf 344: "%s/%s",
345: windows_dir, CONFIG_FILE_NAME);
346:
1.169 paf 347: root_config_filespec_cstr=root_config_filespec_buf;
1.122 parser 348: # else
349: #error must be compiled either configure/make or MSVC++
350: # endif
351: #endif
1.159 paf 352: }
1.122 parser 353:
1.169 paf 354: const char *site_config_filespec_cstr;
355: char site_config_filespec_buf[MAX_STRING];
1.175 paf 356: const char *site_config_by_env=getenv(PARSER_SITE_CONFIG_ENV_NAME);
357: if(!site_config_by_env)
358: site_config_by_env=getenv(REDIRECT_PREFIX PARSER_SITE_CONFIG_ENV_NAME);
359: if(site_config_by_env)
1.169 paf 360: site_config_filespec_cstr=site_config_by_env;
1.164 paf 361: else {
1.122 parser 362: // beside by binary
363: // @todo full path, not ./!
1.164 paf 364: char beside_binary_path[MAX_STRING];
365: strncpy(beside_binary_path, argv0, MAX_STRING-1); beside_binary_path[MAX_STRING-1]=0; // filespec of my binary
366: if(!(
367: rsplit(beside_binary_path, '/') ||
368: rsplit(beside_binary_path, '\\'))) { // strip filename
369: // no path, just filename
370: beside_binary_path[0]='.'; beside_binary_path[1]=0;
371: }
1.169 paf 372: snprintf(site_config_filespec_buf, MAX_STRING,
1.164 paf 373: "%s/%s",
374: beside_binary_path, CONFIG_FILE_NAME);
1.169 paf 375: site_config_filespec_cstr=site_config_filespec_buf;
1.122 parser 376: }
377:
378: // process the request
379: request.core(
1.170 paf 380: root_config_filespec_cstr, false /*fail_on_read_problem*/,
381: site_config_filespec_cstr, false /*fail_on_read_problem*/,
1.122 parser 382: header_only);
383:
384: //
385: done_socks();
386:
387: #ifdef DEBUG_POOL_MALLOC
388: extern void log_pool_stats(Pool& pool);
1.178 paf 389: log_pool_stats(*pool);
1.122 parser 390: #endif
1.160 paf 391:
392: #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS
1.178 paf 393: SAPI::log(*pool,
1.161 paf 394: "string piece appends=%lu, wcontext_result_size=%lu, string_string_shortcut_economy_closer=%lu, total_alloc_size=%lu",
1.160 paf 395: string_piece_appends,
396: wcontext_result_size,
397: string_string_shortcut_economy,
398: total_alloc_size);
399: #endif
400:
1.122 parser 401: }
402:
403: void call_real_parser_handler__do_SEH(
404: const char *filespec_to_process,
405: const char *request_method, bool header_only) {
1.133 paf 406: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 407: LPEXCEPTION_POINTERS system_exception=0;
408: __try {
409: #endif
410: real_parser_handler(
411: filespec_to_process,
412: request_method, header_only);
413:
1.133 paf 414: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 415: } __except (
416: (system_exception=GetExceptionInformation()),
417: EXCEPTION_EXECUTE_HANDLER) {
418:
419: if(system_exception)
420: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.165 paf 421: throw Exception(0,
422: 0,
423: "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.122 parser 424: else
1.165 paf 425: throw Exception(0, 0, "Exception <no exception record>");
1.122 parser 426: else
1.165 paf 427: throw Exception(0, 0, "Exception <no exception information>");
1.122 parser 428: }
429: #endif
430: }
431:
1.139 paf 432: #if _MSC_VER
1.135 paf 433: int failed_new(size_t size) {
434: SAPI::die("out of memory in 'new', failed to allocated %u bytes", size);
435: return 0; // not reached
1.131 paf 436: }
1.135 paf 437: #endif
1.131 paf 438:
1.135 paf 439: #ifdef HAVE_SET_NEW_HANDLER
1.134 paf 440: void failed_new() {
1.135 paf 441: SAPI::die("out of memory in 'new'");
1.131 paf 442: }
443: #endif
444:
1.5 paf 445: int main(int argc, char *argv[]) {
1.178 paf 446: Pool_storage global_pool_storage;
447: Pool global_pool(&global_pool_storage);
448: pool=&global_pool;
449:
450: #ifdef _DEBUG
451: // _crtBreakAlloc=33112;
452: #endif
1.144 paf 453: // _asm int 3;
1.45 paf 454: argv0=argv[0];
455:
1.32 paf 456: umask(2);
457:
1.3 paf 458: // were we started as CGI?
1.146 paf 459: cgi=
1.109 parser 460: getenv("SERVER_SOFTWARE") ||
461: getenv("SERVER_NAME") ||
462: getenv("GATEWAY_INTERFACE") ||
463: getenv("REQUEST_METHOD");
1.5 paf 464:
1.10 paf 465: if(!cgi) {
466: if(argc<2) {
1.69 paf 467: printf(
1.155 paf 468: "Parser/%s Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)\n"
1.154 paf 469: "Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
1.100 parser 470: "\n"
471: "Usage: %s <file>\n",
1.69 paf 472: PARSER_VERSION,
473: argv0?argv0:"parser3");
1.67 paf 474: return 1;
1.10 paf 475: }
476: }
477:
1.100 parser 478: #ifdef WIN32
479: setmode(fileno(stdin), _O_BINARY);
480: setmode(fileno(stdout), _O_BINARY);
481: setmode(fileno(stderr), _O_BINARY);
482: #endif
483:
1.139 paf 484: #if _MSC_VER
1.138 paf 485: _set_new_handler(failed_new);
1.148 paf 486:
487: #ifdef _DEBUG
488: // Get current flag
489: int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
490:
491: // Turn on leak-checking bit
492: tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
493:
494: // Set flag to the new value
495: _CrtSetDbgFlag( tmpFlag );
496: // _CrtSetBreakAlloc(471);
497:
498: #endif
499:
1.138 paf 500: #endif
501:
502: #ifdef HAVE_SET_NEW_HANDLER
503: std::set_new_handler(failed_new);
504: #endif
505:
1.166 paf 506: char *raw_filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
507: char filespec_to_process[MAX_STRING];
508: full_file_spec(raw_filespec_to_process, filespec_to_process, sizeof(filespec_to_process));
1.10 paf 509:
1.109 parser 510: const char *request_method=getenv("REQUEST_METHOD");
1.35 paf 511: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.131 paf 512:
1.122 parser 513: try { // global try
514: call_real_parser_handler__do_SEH(
515: filespec_to_process,
516: request_method, header_only);
517: } catch(const Exception& e) { // global problem
1.44 paf 518: // don't allocate anything on pool here:
519: // possible pool' exception not catch-ed now
520: // and there could be out-of-memory exception
1.43 paf 521:
1.144 paf 522: SAPI::die("exception in request exception handler: %s", e.comment());
1.134 paf 523: #ifndef _DEBUG
1.131 paf 524: } catch(...) {
1.134 paf 525: SAPI::die("<unknown exception>");
1.133 paf 526: #endif
1.16 paf 527: }
1.122 parser 528:
1.109 parser 529:
530: #ifndef WIN32
531: //
532: if(!cgi)
1.178 paf 533: SAPI::send_body(*pool, "\n", 1);
1.109 parser 534: #endif
1.156 paf 535: //_asm int 3;
1.134 paf 536: return 0;
1.1 paf 537: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to parser3.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / targets / cgi