Annotation of parser3/src/targets/cgi/parser3.C, revision 1.175
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:
1.175 ! paf 7: $Id: parser3.C,v 1.174.2.1 2002/04/25 15:37:34 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;
1.125 parser 74: Pool_storage pool_storage;
75: Pool pool(&pool_storage); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 76: bool cgi; ///< we were started as CGI?
1.5 paf 77:
1.46 paf 78: // SAPI
1.86 parser 79:
1.124 parser 80: static void log(const char *fmt, va_list args) {
1.61 paf 81: bool opened;
82: FILE *f=0;
83:
84: if(argv0) {
85: // beside by binary
86: char file_spec[MAX_STRING];
1.98 parser 87: strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary
1.61 paf 88: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
89: strcat(file_spec, "/parser3.log");
90: f=fopen(file_spec, "at");
91: }
92: opened=f!=0;
93: if(!opened)
94: f=stderr;
95:
96: // prefix
97: time_t t=time(0);
1.171 paf 98: if(const char *stamp=ctime(&t)) { // never saw that
1.173 paf 99: if(size_t len=strlen(stamp)) // saw once stamp being =""
1.172 paf 100: fprintf(f, "[%.*s] ", len-1, stamp);
1.171 paf 101: }
1.61 paf 102: // message
1.117 parser 103:
104: char buf[MAX_STRING];
105: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
106: remove_crlf(buf, buf+size);
107:
108: fwrite(buf, size, 1, f);
1.61 paf 109: // newline
110: fprintf(f, "\n");
111:
112: if(opened)
113: fclose(f);
1.85 parser 114: else
115: fflush(f);
1.124 parser 116: }
117:
118: // appends to parser3.log located beside my binary if openable, to stderr otherwize
119: void SAPI::log(Pool& , const char *fmt, ...) {
120: va_list args;
121: va_start(args,fmt);
122: ::log(fmt, args);
123: va_end(args);
124: }
125:
126: void SAPI::die(const char *fmt, ...) {
1.137 paf 127: #ifdef DEBUG_POOL_MALLOC
128: extern void log_pool_stats(Pool& pool);
129: log_pool_stats(pool);
130: #endif
131:
1.144 paf 132: va_list args;
133: va_start(args,fmt);
1.138 paf 134: // log
135:
136: // logging is more important than user
137: // she can cancel download, we'd get SIG_PIPE,
138: // nothing would be logged then
1.124 parser 139: ::log(fmt, args);
140:
1.138 paf 141: // inform user
142:
1.134 paf 143: char body[MAX_STRING];
1.138 paf 144: int content_length=vsnprintf(body, MAX_STRING, fmt, args);
1.134 paf 145:
1.144 paf 146: va_end(args);
147:
1.134 paf 148: // prepare header
149: // let's be honest, that's bad we couldn't produce valid output
150: SAPI::add_header_attribute(pool, "status", "500");
151: SAPI::add_header_attribute(pool, "content-type", "text/plain");
152: char content_length_cstr[MAX_NUMBER];
1.168 paf 153: snprintf(content_length_cstr, sizeof(content_length_cstr), "%u", content_length);
1.134 paf 154: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
155:
156: // send header
157: SAPI::send_header(pool);
158:
159: // body
160: SAPI::send_body(pool, body, content_length);
161:
1.124 parser 162: exit(1);
1.61 paf 163: }
164:
1.122 parser 165: const char *SAPI::get_env(Pool& , const char *name) {
1.109 parser 166: return getenv(name);
1.28 paf 167: }
168:
1.122 parser 169: size_t SAPI::read_post(Pool& , char *buf, size_t max_bytes) {
1.59 paf 170: size_t read_size=0;
1.12 paf 171: do {
1.36 paf 172: int chunk_size=read(fileno(stdin),
1.42 paf 173: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.129 paf 174: if(chunk_size<=0)
1.12 paf 175: break;
176: read_size+=chunk_size;
177: } while(read_size<max_bytes);
178:
179: return read_size;
1.10 paf 180: }
181:
1.122 parser 182: void SAPI::add_header_attribute(Pool& , const char *key, const char *value) {
1.68 paf 183: if(cgi)
1.20 paf 184: printf("%s: %s\n", key, value);
1.19 paf 185: }
186:
1.56 paf 187: /// @todo intelligent cache-control
1.122 parser 188: void SAPI::send_header(Pool& ) {
1.33 paf 189: if(cgi) {
1.147 paf 190: // puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 191:
192: // header | body delimiter
1.20 paf 193: puts("");
1.33 paf 194: }
1.30 paf 195: }
1.20 paf 196:
1.122 parser 197: void SAPI::send_body(Pool& , const void *buf, size_t size) {
1.19 paf 198: stdout_write(buf, size);
1.58 paf 199: }
200:
1.97 parser 201: //
202:
1.166 paf 203: void full_file_spec(const char *file_name, char *buf, size_t buf_size) {
1.167 paf 204: if(file_name)
205: if(file_name[0]=='/'
206: #ifdef WIN32
207: || (file_name[0] && file_name[1]==':')
208: #endif
209: )
210: strncpy(buf, file_name, buf_size);
211: else {
212: char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
213: snprintf(buf, buf_size, "%s/%s", cwd, file_name);
214: }
215: else
216: buf[0]=0;
1.166 paf 217: #ifdef WIN32
218: back_slashes_to_slashes(buf);
219: #endif
1.97 parser 220: }
221:
1.40 paf 222: /**
1.122 parser 223: main workhorse
1.19 paf 224:
1.122 parser 225: @todo
1.40 paf 226: IIS: remove trailing default-document[index.html] from $request.uri.
227: to do that we need to consult metabase,
228: wich is tested but seems slow.
1.144 paf 229: IIS5 todo find out proper 'illegal call' check
1.40 paf 230: */
1.122 parser 231: void real_parser_handler(
232: const char *filespec_to_process,
233: const char *request_method, bool header_only) {
234: // init socks
235: init_socks(pool);
236:
237: // init global classes
238: init_methoded_array(pool);
239: // init global variables
240: pa_globals_init(pool);
241:
242: if(!filespec_to_process)
1.144 paf 243: SAPI::die("Parser/%s", PARSER_VERSION);
1.122 parser 244:
245: // Request info
246: Request::Info request_info;
1.166 paf 247: char document_root_buf[MAX_STRING];
1.122 parser 248: if(cgi) {
249: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
250: request_info.document_root=env_document_root;
251: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
252: // IIS
1.166 paf 253: size_t len=min(sizeof(document_root_buf)-1, strlen(filespec_to_process)-strlen(path_info));
254: memcpy(document_root_buf, filespec_to_process, len); document_root_buf[len]=0;
255: request_info.document_root=document_root_buf;
1.122 parser 256: } else
1.165 paf 257: throw Exception("parser.runtime",
258: 0,
259: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.122 parser 260: } else {
1.166 paf 261: full_file_spec("", document_root_buf, sizeof(document_root_buf));
262: request_info.document_root=document_root_buf;
1.122 parser 263: }
264: request_info.path_translated=filespec_to_process;
265: request_info.method=request_method ? request_method : "GET";
266: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
267: request_info.query_string=query_string;
268: if(cgi) {
269: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
270: request_info.uri=env_request_uri;
271: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
272: if(query_string) {
273: char *reconstructed_uri=(char *)pool.malloc(
274: strlen(path_info)+1/*'?'*/+
275: strlen(query_string)+1/*0*/);
276: strcpy(reconstructed_uri, path_info);
277: strcat(reconstructed_uri, "?");
278: strcat(reconstructed_uri, query_string);
279: request_info.uri=reconstructed_uri;
280: } else
281: request_info.uri=path_info;
282: else
1.165 paf 283: throw Exception("parser.runtime",
284: 0,
285: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.145 paf 286:
287: #ifndef WIN32
288: // they've changed this under IIS5.
1.122 parser 289: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
290: size_t script_name_len=strlen(script_name);
291: size_t uri_len=strlen(request_info.uri);
292: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
293: script_name_len != uri_len) // under IIS they are the same
1.144 paf 294: SAPI::die("CGI: illegal call");
1.122 parser 295: }
1.145 paf 296: #endif
1.122 parser 297: } else
298: request_info.uri=0;
299:
300: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
301: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
302: request_info.content_length=(content_length?atoi(content_length):0);
303: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
304: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
305:
306: // prepare to process request
307: Request request(pool,
308: request_info,
1.143 paf 309: #ifdef _DEBUG
310: String::UL_HTML|String::UL_OPTIMIZE_BIT
311: #else
312: cgi ? String::UL_HTML|String::UL_OPTIMIZE_BIT : String::UL_AS_IS
313: #endif
314: ,
1.130 paf 315: true /* status_allowed */);
1.122 parser 316:
317: // some root-controlled location
1.169 paf 318: const char *root_config_filespec_cstr;
319: char root_config_filespec_buf[MAX_STRING];
1.175 ! paf 320: const char *root_config_by_env=getenv(PARSER_ROOT_CONFIG_ENV_NAME);
! 321: if(!root_config_by_env)
! 322: root_config_by_env=getenv(REDIRECT_PREFIX PARSER_ROOT_CONFIG_ENV_NAME);
! 323: if(root_config_by_env)
1.169 paf 324: root_config_filespec_cstr=root_config_by_env;
1.159 paf 325: else {
1.152 paf 326: #ifdef ROOT_CONFIG_DIR
1.169 paf 327: root_config_filespec_cstr=ROOT_CONFIG_DIR "/" CONFIG_FILE_NAME;
1.122 parser 328: #else
329: # ifdef WIN32
1.159 paf 330: // c:\windows
331: char windows_dir[MAX_STRING];
332: GetWindowsDirectory(windows_dir, MAX_STRING);
333:
1.169 paf 334:
335: snprintf(root_config_filespec_buf, MAX_STRING,
1.159 paf 336: "%s/%s",
337: windows_dir, CONFIG_FILE_NAME);
338:
1.169 paf 339: root_config_filespec_cstr=root_config_filespec_buf;
1.122 parser 340: # else
341: #error must be compiled either configure/make or MSVC++
342: # endif
343: #endif
1.159 paf 344: }
1.122 parser 345:
1.169 paf 346: const char *site_config_filespec_cstr;
347: char site_config_filespec_buf[MAX_STRING];
1.175 ! paf 348: const char *site_config_by_env=getenv(PARSER_SITE_CONFIG_ENV_NAME);
! 349: if(!site_config_by_env)
! 350: site_config_by_env=getenv(REDIRECT_PREFIX PARSER_SITE_CONFIG_ENV_NAME);
! 351: if(site_config_by_env)
1.169 paf 352: site_config_filespec_cstr=site_config_by_env;
1.164 paf 353: else {
1.122 parser 354: // beside by binary
355: // @todo full path, not ./!
1.164 paf 356: char beside_binary_path[MAX_STRING];
357: strncpy(beside_binary_path, argv0, MAX_STRING-1); beside_binary_path[MAX_STRING-1]=0; // filespec of my binary
358: if(!(
359: rsplit(beside_binary_path, '/') ||
360: rsplit(beside_binary_path, '\\'))) { // strip filename
361: // no path, just filename
362: beside_binary_path[0]='.'; beside_binary_path[1]=0;
363: }
1.169 paf 364: snprintf(site_config_filespec_buf, MAX_STRING,
1.164 paf 365: "%s/%s",
366: beside_binary_path, CONFIG_FILE_NAME);
1.169 paf 367: site_config_filespec_cstr=site_config_filespec_buf;
1.122 parser 368: }
369:
370: // process the request
371: request.core(
1.170 paf 372: root_config_filespec_cstr, false /*fail_on_read_problem*/,
373: site_config_filespec_cstr, false /*fail_on_read_problem*/,
1.122 parser 374: header_only);
375:
376: //
377: done_socks();
378:
379: #ifdef DEBUG_POOL_MALLOC
380: extern void log_pool_stats(Pool& pool);
381: log_pool_stats(pool);
382: #endif
1.160 paf 383:
384: #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS
385: SAPI::log(pool,
1.161 paf 386: "string piece appends=%lu, wcontext_result_size=%lu, string_string_shortcut_economy_closer=%lu, total_alloc_size=%lu",
1.160 paf 387: string_piece_appends,
388: wcontext_result_size,
389: string_string_shortcut_economy,
390: total_alloc_size);
391: #endif
392:
1.122 parser 393: }
394:
395: void call_real_parser_handler__do_SEH(
396: const char *filespec_to_process,
397: const char *request_method, bool header_only) {
1.133 paf 398: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 399: LPEXCEPTION_POINTERS system_exception=0;
400: __try {
401: #endif
402: real_parser_handler(
403: filespec_to_process,
404: request_method, header_only);
405:
1.133 paf 406: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 407: } __except (
408: (system_exception=GetExceptionInformation()),
409: EXCEPTION_EXECUTE_HANDLER) {
410:
411: if(system_exception)
412: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.165 paf 413: throw Exception(0,
414: 0,
415: "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.122 parser 416: else
1.165 paf 417: throw Exception(0, 0, "Exception <no exception record>");
1.122 parser 418: else
1.165 paf 419: throw Exception(0, 0, "Exception <no exception information>");
1.122 parser 420: }
421: #endif
422: }
423:
1.139 paf 424: #if _MSC_VER
1.135 paf 425: int failed_new(size_t size) {
426: SAPI::die("out of memory in 'new', failed to allocated %u bytes", size);
427: return 0; // not reached
1.131 paf 428: }
1.135 paf 429: #endif
1.131 paf 430:
1.135 paf 431: #ifdef HAVE_SET_NEW_HANDLER
1.134 paf 432: void failed_new() {
1.135 paf 433: SAPI::die("out of memory in 'new'");
1.131 paf 434: }
435: #endif
436:
1.5 paf 437: int main(int argc, char *argv[]) {
1.144 paf 438: // _asm int 3;
1.45 paf 439: argv0=argv[0];
440:
1.32 paf 441: umask(2);
442:
1.3 paf 443: // were we started as CGI?
1.146 paf 444: cgi=
1.109 parser 445: getenv("SERVER_SOFTWARE") ||
446: getenv("SERVER_NAME") ||
447: getenv("GATEWAY_INTERFACE") ||
448: getenv("REQUEST_METHOD");
1.5 paf 449:
1.10 paf 450: if(!cgi) {
451: if(argc<2) {
1.69 paf 452: printf(
1.155 paf 453: "Parser/%s Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)\n"
1.154 paf 454: "Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
1.100 parser 455: "\n"
456: "Usage: %s <file>\n",
1.69 paf 457: PARSER_VERSION,
458: argv0?argv0:"parser3");
1.67 paf 459: return 1;
1.10 paf 460: }
461: }
462:
1.100 parser 463: #ifdef WIN32
464: setmode(fileno(stdin), _O_BINARY);
465: setmode(fileno(stdout), _O_BINARY);
466: setmode(fileno(stderr), _O_BINARY);
467: #endif
468:
1.139 paf 469: #if _MSC_VER
1.138 paf 470: _set_new_handler(failed_new);
1.148 paf 471:
472: #ifdef _DEBUG
473: // Get current flag
474: int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
475:
476: // Turn on leak-checking bit
477: tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
478:
479: // Set flag to the new value
480: _CrtSetDbgFlag( tmpFlag );
481: // _CrtSetBreakAlloc(471);
482:
483: #endif
484:
1.138 paf 485: #endif
486:
487: #ifdef HAVE_SET_NEW_HANDLER
488: std::set_new_handler(failed_new);
489: #endif
490:
1.166 paf 491: char *raw_filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
492: char filespec_to_process[MAX_STRING];
493: full_file_spec(raw_filespec_to_process, filespec_to_process, sizeof(filespec_to_process));
1.10 paf 494:
1.109 parser 495: const char *request_method=getenv("REQUEST_METHOD");
1.35 paf 496: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.131 paf 497:
1.122 parser 498: try { // global try
499: call_real_parser_handler__do_SEH(
500: filespec_to_process,
501: request_method, header_only);
502: } catch(const Exception& e) { // global problem
1.44 paf 503: // don't allocate anything on pool here:
504: // possible pool' exception not catch-ed now
505: // and there could be out-of-memory exception
1.43 paf 506:
1.144 paf 507: SAPI::die("exception in request exception handler: %s", e.comment());
1.134 paf 508: #ifndef _DEBUG
1.131 paf 509: } catch(...) {
1.134 paf 510: SAPI::die("<unknown exception>");
1.133 paf 511: #endif
1.16 paf 512: }
1.122 parser 513:
1.109 parser 514:
515: #ifndef WIN32
516: //
517: if(!cgi)
518: SAPI::send_body(pool, "\n", 1);
519: #endif
1.156 paf 520: //_asm int 3;
1.134 paf 521: return 0;
1.1 paf 522: }
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