Annotation of parser3/src/targets/cgi/parser3.C, revision 1.154
1.27 paf 1: /** @file
2: Parser: scripting and CGI main.
3:
1.153 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:
1.154 ! paf 7: $Id: parser3.C,v 1.153 2002/02/08 07:27:50 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:
1.127 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:
1.42 paf 55: /// IIS refuses to read bigger chunks
56: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
57:
1.45 paf 58: const char *argv0;
1.125 parser 59: Pool_storage pool_storage;
60: Pool pool(&pool_storage); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 61: bool cgi; ///< we were started as CGI?
1.5 paf 62:
1.46 paf 63: // SAPI
1.86 parser 64:
1.124 parser 65: static void log(const char *fmt, va_list args) {
1.61 paf 66: bool opened;
67: FILE *f=0;
68:
69: if(argv0) {
70: // beside by binary
71: char file_spec[MAX_STRING];
1.98 parser 72: strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary
1.61 paf 73: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
74: strcat(file_spec, "/parser3.log");
75: f=fopen(file_spec, "at");
76: }
77: opened=f!=0;
78: if(!opened)
79: f=stderr;
80:
81: // prefix
82: time_t t=time(0);
83: const char *stamp=ctime(&t);
84: fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
85: // message
1.117 parser 86:
87: char buf[MAX_STRING];
88: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
89: remove_crlf(buf, buf+size);
90:
91: fwrite(buf, size, 1, f);
1.61 paf 92: // newline
93: fprintf(f, "\n");
94:
95: if(opened)
96: fclose(f);
1.85 parser 97: else
98: fflush(f);
1.124 parser 99: }
100:
101: // appends to parser3.log located beside my binary if openable, to stderr otherwize
102: void SAPI::log(Pool& , const char *fmt, ...) {
103: va_list args;
104: va_start(args,fmt);
105: ::log(fmt, args);
106: va_end(args);
107: }
108:
109: void SAPI::die(const char *fmt, ...) {
1.137 paf 110: #ifdef DEBUG_POOL_MALLOC
111: extern void log_pool_stats(Pool& pool);
112: log_pool_stats(pool);
113: #endif
114:
1.144 paf 115: va_list args;
116: va_start(args,fmt);
1.138 paf 117: // log
118:
119: // logging is more important than user
120: // she can cancel download, we'd get SIG_PIPE,
121: // nothing would be logged then
1.124 parser 122: ::log(fmt, args);
123:
1.138 paf 124: // inform user
125:
1.134 paf 126: char body[MAX_STRING];
1.138 paf 127: int content_length=vsnprintf(body, MAX_STRING, fmt, args);
1.134 paf 128:
1.144 paf 129: va_end(args);
130:
1.134 paf 131: // prepare header
132: // let's be honest, that's bad we couldn't produce valid output
133: SAPI::add_header_attribute(pool, "status", "500");
134: SAPI::add_header_attribute(pool, "content-type", "text/plain");
135: char content_length_cstr[MAX_NUMBER];
136: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
137: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
138:
139: // send header
140: SAPI::send_header(pool);
141:
142: // body
143: SAPI::send_body(pool, body, content_length);
144:
1.124 parser 145: exit(1);
1.61 paf 146: }
147:
1.122 parser 148: const char *SAPI::get_env(Pool& , const char *name) {
1.109 parser 149: return getenv(name);
1.28 paf 150: }
151:
1.122 parser 152: size_t SAPI::read_post(Pool& , char *buf, size_t max_bytes) {
1.59 paf 153: size_t read_size=0;
1.12 paf 154: do {
1.36 paf 155: int chunk_size=read(fileno(stdin),
1.42 paf 156: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.129 paf 157: if(chunk_size<=0)
1.12 paf 158: break;
159: read_size+=chunk_size;
160: } while(read_size<max_bytes);
161:
162: return read_size;
1.10 paf 163: }
164:
1.122 parser 165: void SAPI::add_header_attribute(Pool& , const char *key, const char *value) {
1.68 paf 166: if(cgi)
1.20 paf 167: printf("%s: %s\n", key, value);
1.19 paf 168: }
169:
1.56 paf 170: /// @todo intelligent cache-control
1.122 parser 171: void SAPI::send_header(Pool& ) {
1.33 paf 172: if(cgi) {
1.147 paf 173: // puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 174:
175: // header | body delimiter
1.20 paf 176: puts("");
1.33 paf 177: }
1.30 paf 178: }
1.20 paf 179:
1.122 parser 180: void SAPI::send_body(Pool& , const void *buf, size_t size) {
1.19 paf 181: stdout_write(buf, size);
1.58 paf 182: }
183:
1.97 parser 184: //
185:
186: char *full_file_spec(char *file_name) {
1.108 parser 187: if(file_name && !strchr(file_name, '/')) {
1.97 parser 188: static char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
189: static char buf[MAX_STRING];
190: snprintf(buf, MAX_STRING, "%s/%s", cwd, file_name);
191: return buf;
192: }
193: return file_name;
194: }
195:
1.40 paf 196: /**
1.122 parser 197: main workhorse
1.19 paf 198:
1.122 parser 199: @todo
1.40 paf 200: IIS: remove trailing default-document[index.html] from $request.uri.
201: to do that we need to consult metabase,
202: wich is tested but seems slow.
1.144 paf 203: IIS5 todo find out proper 'illegal call' check
1.40 paf 204: */
1.122 parser 205: void real_parser_handler(
206: const char *filespec_to_process,
207: const char *request_method, bool header_only) {
208: // init socks
209: init_socks(pool);
210:
211: // init global classes
212: init_methoded_array(pool);
213: // init global variables
214: pa_globals_init(pool);
215:
216: if(!filespec_to_process)
1.144 paf 217: SAPI::die("Parser/%s", PARSER_VERSION);
1.122 parser 218:
219: // Request info
220: Request::Info request_info;
221: if(cgi) {
222: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
223: request_info.document_root=env_document_root;
224: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
225: // IIS
226: size_t len=strlen(filespec_to_process)-strlen(path_info);
227: char *buf=(char *)pool.malloc(len+1);
228: memcpy(buf, filespec_to_process, len); buf[len]=0;
229: request_info.document_root=buf;
230: } else
231: throw Exception(0, 0,
232: 0,
233: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
234: } else {
235: static char buf[MAX_STRING];
236: strncpy(buf, filespec_to_process, MAX_STRING-1); buf[MAX_STRING-1]=0;
237: if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename
238: request_info.document_root=buf;
239: else
240: request_info.document_root="";
241: }
242: request_info.path_translated=filespec_to_process;
243: request_info.method=request_method ? request_method : "GET";
244: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
245: request_info.query_string=query_string;
246: if(cgi) {
247: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
248: request_info.uri=env_request_uri;
249: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
250: if(query_string) {
251: char *reconstructed_uri=(char *)pool.malloc(
252: strlen(path_info)+1/*'?'*/+
253: strlen(query_string)+1/*0*/);
254: strcpy(reconstructed_uri, path_info);
255: strcat(reconstructed_uri, "?");
256: strcat(reconstructed_uri, query_string);
257: request_info.uri=reconstructed_uri;
258: } else
259: request_info.uri=path_info;
260: else
261: throw Exception(0, 0,
262: 0,
263: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.145 paf 264:
265: #ifndef WIN32
266: // they've changed this under IIS5.
1.122 parser 267: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
268: size_t script_name_len=strlen(script_name);
269: size_t uri_len=strlen(request_info.uri);
270: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
271: script_name_len != uri_len) // under IIS they are the same
1.144 paf 272: SAPI::die("CGI: illegal call");
1.122 parser 273: }
1.145 paf 274: #endif
1.122 parser 275: } else
276: request_info.uri=0;
277:
278: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
279: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
280: request_info.content_length=(content_length?atoi(content_length):0);
281: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
282: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
283:
284: // prepare to process request
285: Request request(pool,
286: request_info,
1.143 paf 287: #ifdef _DEBUG
288: String::UL_HTML|String::UL_OPTIMIZE_BIT
289: #else
290: cgi ? String::UL_HTML|String::UL_OPTIMIZE_BIT : String::UL_AS_IS
291: #endif
292: ,
1.130 paf 293: true /* status_allowed */);
1.122 parser 294:
295: // some root-controlled location
1.152 paf 296: #ifdef ROOT_CONFIG_DIR
297: const char *root_config_filespec=ROOT_CONFIG_DIR "/" CONFIG_FILE_NAME;
1.122 parser 298: #else
299: # ifdef WIN32
300: // c:\windows
301: char root_config_path[MAX_STRING];
302: GetWindowsDirectory(root_config_path, MAX_STRING);
303:
304: char root_config_filespec[MAX_STRING];
305: snprintf(root_config_filespec, MAX_STRING,
306: "%s/%s",
307: root_config_path, CONFIG_FILE_NAME);
308: # else
309: #error must be compiled either configure/make or MSVC++
310: # endif
311: #endif
312:
313: // beside by binary
314: // @todo full path, not ./!
315: static char site_config_path[MAX_STRING];
316: strncpy(site_config_path, argv0, MAX_STRING-1); site_config_path[MAX_STRING-1]=0; // filespec of my binary
317: if(!(
318: rsplit(site_config_path, '/') ||
319: rsplit(site_config_path, '\\'))) { // strip filename
320: // no path, just filename
321: site_config_path[0]='.'; site_config_path[1]=0;
322: }
323:
324: char site_config_filespec[MAX_STRING];
325: snprintf(site_config_filespec, MAX_STRING,
326: "%s/%s",
327: site_config_path, CONFIG_FILE_NAME);
328:
329: // process the request
330: request.core(
331: root_config_filespec, false,
332: site_config_filespec, false,
333: header_only);
334:
335: //
336: done_socks();
337:
338: #ifdef DEBUG_POOL_MALLOC
339: extern void log_pool_stats(Pool& pool);
340: log_pool_stats(pool);
341: #endif
342: }
343:
344: void call_real_parser_handler__do_SEH(
345: const char *filespec_to_process,
346: const char *request_method, bool header_only) {
1.133 paf 347: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 348: LPEXCEPTION_POINTERS system_exception=0;
349: __try {
350: #endif
351: real_parser_handler(
352: filespec_to_process,
353: request_method, header_only);
354:
1.133 paf 355: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 356: } __except (
357: (system_exception=GetExceptionInformation()),
358: EXCEPTION_EXECUTE_HANDLER) {
359:
360: if(system_exception)
361: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
362: throw Exception(0, 0,
363: 0,
364: "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
365: else
366: throw Exception(0, 0, 0, "Exception <no exception record>");
367: else
368: throw Exception(0, 0, 0, "Exception <no exception information>");
369: }
370: #endif
371: }
372:
1.139 paf 373: #if _MSC_VER
1.135 paf 374: int failed_new(size_t size) {
375: SAPI::die("out of memory in 'new', failed to allocated %u bytes", size);
376: return 0; // not reached
1.131 paf 377: }
1.135 paf 378: #endif
1.131 paf 379:
1.135 paf 380: #ifdef HAVE_SET_NEW_HANDLER
1.134 paf 381: void failed_new() {
1.135 paf 382: SAPI::die("out of memory in 'new'");
1.131 paf 383: }
384: #endif
385:
1.5 paf 386: int main(int argc, char *argv[]) {
1.144 paf 387: // _asm int 3;
1.45 paf 388: argv0=argv[0];
389:
1.32 paf 390: umask(2);
391:
1.3 paf 392: // were we started as CGI?
1.146 paf 393: cgi=
1.109 parser 394: getenv("SERVER_SOFTWARE") ||
395: getenv("SERVER_NAME") ||
396: getenv("GATEWAY_INTERFACE") ||
397: getenv("REQUEST_METHOD");
1.5 paf 398:
1.10 paf 399: if(!cgi) {
400: if(argc<2) {
1.69 paf 401: printf(
1.153 paf 402: "Parser/%s Copyright(c) 2001, 2002 ArtLebedev Group(http://www.artlebedev.com)\n"
1.154 ! paf 403: "Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
1.100 parser 404: "\n"
405: "Usage: %s <file>\n",
1.69 paf 406: PARSER_VERSION,
407: argv0?argv0:"parser3");
1.67 paf 408: return 1;
1.10 paf 409: }
410: }
411:
1.100 parser 412: #ifdef WIN32
413: setmode(fileno(stdin), _O_BINARY);
414: setmode(fileno(stdout), _O_BINARY);
415: setmode(fileno(stderr), _O_BINARY);
416: #endif
417:
1.139 paf 418: #if _MSC_VER
1.138 paf 419: _set_new_handler(failed_new);
1.148 paf 420:
421: #ifdef _DEBUG
422: // Get current flag
423: int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
424:
425: // Turn on leak-checking bit
426: tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
427:
428: // Set flag to the new value
429: _CrtSetDbgFlag( tmpFlag );
430: // _CrtSetBreakAlloc(471);
431:
432: #endif
433:
1.138 paf 434: #endif
435:
436: #ifdef HAVE_SET_NEW_HANDLER
437: std::set_new_handler(failed_new);
438: #endif
439:
1.109 parser 440: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 441: #ifdef WIN32
1.43 paf 442: back_slashes_to_slashes(filespec_to_process);
1.36 paf 443: #endif
1.97 parser 444: filespec_to_process=full_file_spec(filespec_to_process);
1.10 paf 445:
1.109 parser 446: const char *request_method=getenv("REQUEST_METHOD");
1.35 paf 447: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.131 paf 448:
1.122 parser 449: try { // global try
450: call_real_parser_handler__do_SEH(
451: filespec_to_process,
452: request_method, header_only);
453: } catch(const Exception& e) { // global problem
1.44 paf 454: // don't allocate anything on pool here:
455: // possible pool' exception not catch-ed now
456: // and there could be out-of-memory exception
1.43 paf 457:
1.144 paf 458: SAPI::die("exception in request exception handler: %s", e.comment());
1.134 paf 459: #ifndef _DEBUG
1.131 paf 460: } catch(...) {
1.134 paf 461: SAPI::die("<unknown exception>");
1.133 paf 462: #endif
1.16 paf 463: }
1.122 parser 464:
1.109 parser 465:
466: #ifndef WIN32
467: //
468: if(!cgi)
469: SAPI::send_body(pool, "\n", 1);
470: #endif
1.134 paf 471: return 0;
1.1 paf 472: }
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