Annotation of parser3/src/targets/cgi/parser3.C, revision 1.159
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:
1.159 ! paf 7: $Id: parser3.C,v 1.158 2002/02/18 08:45:45 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
1.84 parser 32:
1.109 parser 33: // consts
1.113 parser 34:
35: extern const char *main_RCSIds[];
1.116 parser 36: #ifdef USE_SMTP
1.113 parser 37: extern const char *smtp_RCSIds[];
1.114 parser 38: #endif
1.113 parser 39: extern const char *gd_RCSIds[];
40: extern const char *classes_RCSIds[];
41: extern const char *types_RCSIds[];
1.115 parser 42: extern const char *parser3_RCSIds[];
1.113 parser 43: const char **RCSIds[]={
44: main_RCSIds,
1.116 parser 45: #ifdef USE_SMTP
1.113 parser 46: smtp_RCSIds,
1.114 parser 47: #endif
1.113 parser 48: gd_RCSIds,
49: classes_RCSIds,
50: types_RCSIds,
1.115 parser 51: parser3_RCSIds,
1.113 parser 52: 0
53: };
1.84 parser 54:
1.159 ! paf 55: const char *PARSER_ROOT_CONFIG_ENV_NAME="PARSER_ROOT_CONFIG";
! 56:
1.42 paf 57: /// IIS refuses to read bigger chunks
58: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
59:
1.45 paf 60: const char *argv0;
1.125 parser 61: Pool_storage pool_storage;
62: Pool pool(&pool_storage); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 63: bool cgi; ///< we were started as CGI?
1.5 paf 64:
1.46 paf 65: // SAPI
1.86 parser 66:
1.124 parser 67: static void log(const char *fmt, va_list args) {
1.61 paf 68: bool opened;
69: FILE *f=0;
70:
71: if(argv0) {
72: // beside by binary
73: char file_spec[MAX_STRING];
1.98 parser 74: strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary
1.61 paf 75: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
76: strcat(file_spec, "/parser3.log");
77: f=fopen(file_spec, "at");
78: }
79: opened=f!=0;
80: if(!opened)
81: f=stderr;
82:
83: // prefix
84: time_t t=time(0);
85: const char *stamp=ctime(&t);
86: fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
87: // message
1.117 parser 88:
89: char buf[MAX_STRING];
90: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
91: remove_crlf(buf, buf+size);
92:
93: fwrite(buf, size, 1, f);
1.61 paf 94: // newline
95: fprintf(f, "\n");
96:
97: if(opened)
98: fclose(f);
1.85 parser 99: else
100: fflush(f);
1.124 parser 101: }
102:
103: // appends to parser3.log located beside my binary if openable, to stderr otherwize
104: void SAPI::log(Pool& , const char *fmt, ...) {
105: va_list args;
106: va_start(args,fmt);
107: ::log(fmt, args);
108: va_end(args);
109: }
110:
111: void SAPI::die(const char *fmt, ...) {
1.137 paf 112: #ifdef DEBUG_POOL_MALLOC
113: extern void log_pool_stats(Pool& pool);
114: log_pool_stats(pool);
115: #endif
116:
1.144 paf 117: va_list args;
118: va_start(args,fmt);
1.138 paf 119: // log
120:
121: // logging is more important than user
122: // she can cancel download, we'd get SIG_PIPE,
123: // nothing would be logged then
1.124 parser 124: ::log(fmt, args);
125:
1.138 paf 126: // inform user
127:
1.134 paf 128: char body[MAX_STRING];
1.138 paf 129: int content_length=vsnprintf(body, MAX_STRING, fmt, args);
1.134 paf 130:
1.144 paf 131: va_end(args);
132:
1.134 paf 133: // prepare header
134: // let's be honest, that's bad we couldn't produce valid output
135: SAPI::add_header_attribute(pool, "status", "500");
136: SAPI::add_header_attribute(pool, "content-type", "text/plain");
137: char content_length_cstr[MAX_NUMBER];
138: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
139: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
140:
141: // send header
142: SAPI::send_header(pool);
143:
144: // body
145: SAPI::send_body(pool, body, content_length);
146:
1.124 parser 147: exit(1);
1.61 paf 148: }
149:
1.122 parser 150: const char *SAPI::get_env(Pool& , const char *name) {
1.109 parser 151: return getenv(name);
1.28 paf 152: }
153:
1.122 parser 154: size_t SAPI::read_post(Pool& , char *buf, size_t max_bytes) {
1.59 paf 155: size_t read_size=0;
1.12 paf 156: do {
1.36 paf 157: int chunk_size=read(fileno(stdin),
1.42 paf 158: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.129 paf 159: if(chunk_size<=0)
1.12 paf 160: break;
161: read_size+=chunk_size;
162: } while(read_size<max_bytes);
163:
164: return read_size;
1.10 paf 165: }
166:
1.122 parser 167: void SAPI::add_header_attribute(Pool& , const char *key, const char *value) {
1.68 paf 168: if(cgi)
1.20 paf 169: printf("%s: %s\n", key, value);
1.19 paf 170: }
171:
1.56 paf 172: /// @todo intelligent cache-control
1.122 parser 173: void SAPI::send_header(Pool& ) {
1.33 paf 174: if(cgi) {
1.147 paf 175: // puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 176:
177: // header | body delimiter
1.20 paf 178: puts("");
1.33 paf 179: }
1.30 paf 180: }
1.20 paf 181:
1.122 parser 182: void SAPI::send_body(Pool& , const void *buf, size_t size) {
1.19 paf 183: stdout_write(buf, size);
1.58 paf 184: }
185:
1.97 parser 186: //
187:
188: char *full_file_spec(char *file_name) {
1.108 parser 189: if(file_name && !strchr(file_name, '/')) {
1.97 parser 190: static char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
191: static char buf[MAX_STRING];
192: snprintf(buf, MAX_STRING, "%s/%s", cwd, file_name);
193: return buf;
194: }
195: return file_name;
196: }
197:
1.40 paf 198: /**
1.122 parser 199: main workhorse
1.19 paf 200:
1.122 parser 201: @todo
1.40 paf 202: IIS: remove trailing default-document[index.html] from $request.uri.
203: to do that we need to consult metabase,
204: wich is tested but seems slow.
1.144 paf 205: IIS5 todo find out proper 'illegal call' check
1.40 paf 206: */
1.122 parser 207: void real_parser_handler(
208: const char *filespec_to_process,
209: const char *request_method, bool header_only) {
210: // init socks
211: init_socks(pool);
212:
213: // init global classes
214: init_methoded_array(pool);
215: // init global variables
216: pa_globals_init(pool);
217:
218: if(!filespec_to_process)
1.144 paf 219: SAPI::die("Parser/%s", PARSER_VERSION);
1.122 parser 220:
221: // Request info
222: Request::Info request_info;
223: if(cgi) {
224: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
225: request_info.document_root=env_document_root;
226: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
227: // IIS
228: size_t len=strlen(filespec_to_process)-strlen(path_info);
229: char *buf=(char *)pool.malloc(len+1);
230: memcpy(buf, filespec_to_process, len); buf[len]=0;
231: request_info.document_root=buf;
232: } else
233: throw Exception(0, 0,
234: 0,
235: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
236: } else {
237: static char buf[MAX_STRING];
238: strncpy(buf, filespec_to_process, MAX_STRING-1); buf[MAX_STRING-1]=0;
239: if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename
240: request_info.document_root=buf;
241: else
242: request_info.document_root="";
243: }
244: request_info.path_translated=filespec_to_process;
245: request_info.method=request_method ? request_method : "GET";
246: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
247: request_info.query_string=query_string;
248: if(cgi) {
249: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
250: request_info.uri=env_request_uri;
251: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
252: if(query_string) {
253: char *reconstructed_uri=(char *)pool.malloc(
254: strlen(path_info)+1/*'?'*/+
255: strlen(query_string)+1/*0*/);
256: strcpy(reconstructed_uri, path_info);
257: strcat(reconstructed_uri, "?");
258: strcat(reconstructed_uri, query_string);
259: request_info.uri=reconstructed_uri;
260: } else
261: request_info.uri=path_info;
262: else
263: throw Exception(0, 0,
264: 0,
265: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.145 paf 266:
267: #ifndef WIN32
268: // they've changed this under IIS5.
1.122 parser 269: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
270: size_t script_name_len=strlen(script_name);
271: size_t uri_len=strlen(request_info.uri);
272: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
273: script_name_len != uri_len) // under IIS they are the same
1.144 paf 274: SAPI::die("CGI: illegal call");
1.122 parser 275: }
1.145 paf 276: #endif
1.122 parser 277: } else
278: request_info.uri=0;
279:
280: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
281: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
282: request_info.content_length=(content_length?atoi(content_length):0);
283: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
284: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
285:
286: // prepare to process request
287: Request request(pool,
288: request_info,
1.143 paf 289: #ifdef _DEBUG
290: String::UL_HTML|String::UL_OPTIMIZE_BIT
291: #else
292: cgi ? String::UL_HTML|String::UL_OPTIMIZE_BIT : String::UL_AS_IS
293: #endif
294: ,
1.130 paf 295: true /* status_allowed */);
1.122 parser 296:
297: // some root-controlled location
1.159 ! paf 298: const char *root_config_filespec;
! 299: if(const char *root_config_by_env=getenv(PARSER_ROOT_CONFIG_ENV_NAME))
! 300: root_config_filespec=root_config_by_env;
! 301: else {
1.152 paf 302: #ifdef ROOT_CONFIG_DIR
1.159 ! paf 303: root_config_filespec=ROOT_CONFIG_DIR "/" CONFIG_FILE_NAME;
1.122 parser 304: #else
305: # ifdef WIN32
1.159 ! paf 306: // c:\windows
! 307: char windows_dir[MAX_STRING];
! 308: GetWindowsDirectory(windows_dir, MAX_STRING);
! 309:
! 310: char buf[MAX_STRING];
! 311: snprintf(buf, MAX_STRING,
! 312: "%s/%s",
! 313: windows_dir, CONFIG_FILE_NAME);
! 314:
! 315: root_config_filespec=buf;
1.122 parser 316: # else
317: #error must be compiled either configure/make or MSVC++
318: # endif
319: #endif
1.159 ! paf 320: }
1.122 parser 321:
322: // beside by binary
323: // @todo full path, not ./!
324: static char site_config_path[MAX_STRING];
325: strncpy(site_config_path, argv0, MAX_STRING-1); site_config_path[MAX_STRING-1]=0; // filespec of my binary
326: if(!(
327: rsplit(site_config_path, '/') ||
328: rsplit(site_config_path, '\\'))) { // strip filename
329: // no path, just filename
330: site_config_path[0]='.'; site_config_path[1]=0;
331: }
332:
333: char site_config_filespec[MAX_STRING];
334: snprintf(site_config_filespec, MAX_STRING,
335: "%s/%s",
336: site_config_path, CONFIG_FILE_NAME);
337:
338: // process the request
339: request.core(
340: root_config_filespec, false,
341: site_config_filespec, false,
342: header_only);
343:
344: //
345: done_socks();
346:
347: #ifdef DEBUG_POOL_MALLOC
348: extern void log_pool_stats(Pool& pool);
349: log_pool_stats(pool);
350: #endif
351: }
352:
353: void call_real_parser_handler__do_SEH(
354: const char *filespec_to_process,
355: const char *request_method, bool header_only) {
1.133 paf 356: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 357: LPEXCEPTION_POINTERS system_exception=0;
358: __try {
359: #endif
360: real_parser_handler(
361: filespec_to_process,
362: request_method, header_only);
363:
1.133 paf 364: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 365: } __except (
366: (system_exception=GetExceptionInformation()),
367: EXCEPTION_EXECUTE_HANDLER) {
368:
369: if(system_exception)
370: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
371: throw Exception(0, 0,
372: 0,
373: "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
374: else
375: throw Exception(0, 0, 0, "Exception <no exception record>");
376: else
377: throw Exception(0, 0, 0, "Exception <no exception information>");
378: }
379: #endif
380: }
381:
1.139 paf 382: #if _MSC_VER
1.135 paf 383: int failed_new(size_t size) {
384: SAPI::die("out of memory in 'new', failed to allocated %u bytes", size);
385: return 0; // not reached
1.131 paf 386: }
1.135 paf 387: #endif
1.131 paf 388:
1.135 paf 389: #ifdef HAVE_SET_NEW_HANDLER
1.134 paf 390: void failed_new() {
1.135 paf 391: SAPI::die("out of memory in 'new'");
1.131 paf 392: }
393: #endif
394:
1.5 paf 395: int main(int argc, char *argv[]) {
1.144 paf 396: // _asm int 3;
1.45 paf 397: argv0=argv[0];
398:
1.32 paf 399: umask(2);
400:
1.3 paf 401: // were we started as CGI?
1.146 paf 402: cgi=
1.109 parser 403: getenv("SERVER_SOFTWARE") ||
404: getenv("SERVER_NAME") ||
405: getenv("GATEWAY_INTERFACE") ||
406: getenv("REQUEST_METHOD");
1.5 paf 407:
1.10 paf 408: if(!cgi) {
409: if(argc<2) {
1.69 paf 410: printf(
1.155 paf 411: "Parser/%s Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)\n"
1.154 paf 412: "Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
1.100 parser 413: "\n"
414: "Usage: %s <file>\n",
1.69 paf 415: PARSER_VERSION,
416: argv0?argv0:"parser3");
1.67 paf 417: return 1;
1.10 paf 418: }
419: }
420:
1.100 parser 421: #ifdef WIN32
422: setmode(fileno(stdin), _O_BINARY);
423: setmode(fileno(stdout), _O_BINARY);
424: setmode(fileno(stderr), _O_BINARY);
425: #endif
426:
1.139 paf 427: #if _MSC_VER
1.138 paf 428: _set_new_handler(failed_new);
1.148 paf 429:
430: #ifdef _DEBUG
431: // Get current flag
432: int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
433:
434: // Turn on leak-checking bit
435: tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
436:
437: // Set flag to the new value
438: _CrtSetDbgFlag( tmpFlag );
439: // _CrtSetBreakAlloc(471);
440:
441: #endif
442:
1.138 paf 443: #endif
444:
445: #ifdef HAVE_SET_NEW_HANDLER
446: std::set_new_handler(failed_new);
447: #endif
448:
1.109 parser 449: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 450: #ifdef WIN32
1.43 paf 451: back_slashes_to_slashes(filespec_to_process);
1.36 paf 452: #endif
1.97 parser 453: filespec_to_process=full_file_spec(filespec_to_process);
1.10 paf 454:
1.109 parser 455: const char *request_method=getenv("REQUEST_METHOD");
1.35 paf 456: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.131 paf 457:
1.122 parser 458: try { // global try
459: call_real_parser_handler__do_SEH(
460: filespec_to_process,
461: request_method, header_only);
462: } catch(const Exception& e) { // global problem
1.44 paf 463: // don't allocate anything on pool here:
464: // possible pool' exception not catch-ed now
465: // and there could be out-of-memory exception
1.43 paf 466:
1.144 paf 467: SAPI::die("exception in request exception handler: %s", e.comment());
1.134 paf 468: #ifndef _DEBUG
1.131 paf 469: } catch(...) {
1.134 paf 470: SAPI::die("<unknown exception>");
1.133 paf 471: #endif
1.16 paf 472: }
1.122 parser 473:
1.109 parser 474:
475: #ifndef WIN32
476: //
477: if(!cgi)
478: SAPI::send_body(pool, "\n", 1);
479: #endif
1.156 paf 480: //_asm int 3;
1.134 paf 481: return 0;
1.1 paf 482: }
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