Annotation of parser3/src/targets/cgi/parser3.C, revision 1.173
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:
1.173 ! paf 7: $Id: parser3.C,v 1.172 2002/04/16 08:41:05 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);
1.171 paf 95: if(const char *stamp=ctime(&t)) { // never saw that
1.173 ! paf 96: if(size_t len=strlen(stamp)) // saw once stamp being =""
1.172 paf 97: fprintf(f, "[%.*s] ", len-1, stamp);
1.171 paf 98: }
1.61 paf 99: // message
1.117 parser 100:
101: char buf[MAX_STRING];
102: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
103: remove_crlf(buf, buf+size);
104:
105: fwrite(buf, size, 1, f);
1.61 paf 106: // newline
107: fprintf(f, "\n");
108:
109: if(opened)
110: fclose(f);
1.85 parser 111: else
112: fflush(f);
1.124 parser 113: }
114:
115: // appends to parser3.log located beside my binary if openable, to stderr otherwize
116: void SAPI::log(Pool& , const char *fmt, ...) {
117: va_list args;
118: va_start(args,fmt);
119: ::log(fmt, args);
120: va_end(args);
121: }
122:
123: void SAPI::die(const char *fmt, ...) {
1.137 paf 124: #ifdef DEBUG_POOL_MALLOC
125: extern void log_pool_stats(Pool& pool);
126: log_pool_stats(pool);
127: #endif
128:
1.144 paf 129: va_list args;
130: va_start(args,fmt);
1.138 paf 131: // log
132:
133: // logging is more important than user
134: // she can cancel download, we'd get SIG_PIPE,
135: // nothing would be logged then
1.124 parser 136: ::log(fmt, args);
137:
1.138 paf 138: // inform user
139:
1.134 paf 140: char body[MAX_STRING];
1.138 paf 141: int content_length=vsnprintf(body, MAX_STRING, fmt, args);
1.134 paf 142:
1.144 paf 143: va_end(args);
144:
1.134 paf 145: // prepare header
146: // let's be honest, that's bad we couldn't produce valid output
147: SAPI::add_header_attribute(pool, "status", "500");
148: SAPI::add_header_attribute(pool, "content-type", "text/plain");
149: char content_length_cstr[MAX_NUMBER];
1.168 paf 150: snprintf(content_length_cstr, sizeof(content_length_cstr), "%u", content_length);
1.134 paf 151: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
152:
153: // send header
154: SAPI::send_header(pool);
155:
156: // body
157: SAPI::send_body(pool, body, content_length);
158:
1.124 parser 159: exit(1);
1.61 paf 160: }
161:
1.122 parser 162: const char *SAPI::get_env(Pool& , const char *name) {
1.109 parser 163: return getenv(name);
1.28 paf 164: }
165:
1.122 parser 166: size_t SAPI::read_post(Pool& , char *buf, size_t max_bytes) {
1.59 paf 167: size_t read_size=0;
1.12 paf 168: do {
1.36 paf 169: int chunk_size=read(fileno(stdin),
1.42 paf 170: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.129 paf 171: if(chunk_size<=0)
1.12 paf 172: break;
173: read_size+=chunk_size;
174: } while(read_size<max_bytes);
175:
176: return read_size;
1.10 paf 177: }
178:
1.122 parser 179: void SAPI::add_header_attribute(Pool& , const char *key, const char *value) {
1.68 paf 180: if(cgi)
1.20 paf 181: printf("%s: %s\n", key, value);
1.19 paf 182: }
183:
1.56 paf 184: /// @todo intelligent cache-control
1.122 parser 185: void SAPI::send_header(Pool& ) {
1.33 paf 186: if(cgi) {
1.147 paf 187: // puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 188:
189: // header | body delimiter
1.20 paf 190: puts("");
1.33 paf 191: }
1.30 paf 192: }
1.20 paf 193:
1.122 parser 194: void SAPI::send_body(Pool& , const void *buf, size_t size) {
1.19 paf 195: stdout_write(buf, size);
1.58 paf 196: }
197:
1.97 parser 198: //
199:
1.166 paf 200: void full_file_spec(const char *file_name, char *buf, size_t buf_size) {
1.167 paf 201: if(file_name)
202: if(file_name[0]=='/'
203: #ifdef WIN32
204: || (file_name[0] && file_name[1]==':')
205: #endif
206: )
207: strncpy(buf, file_name, buf_size);
208: else {
209: char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
210: snprintf(buf, buf_size, "%s/%s", cwd, file_name);
211: }
212: else
213: buf[0]=0;
1.166 paf 214: #ifdef WIN32
215: back_slashes_to_slashes(buf);
216: #endif
1.97 parser 217: }
218:
1.40 paf 219: /**
1.122 parser 220: main workhorse
1.19 paf 221:
1.122 parser 222: @todo
1.40 paf 223: IIS: remove trailing default-document[index.html] from $request.uri.
224: to do that we need to consult metabase,
225: wich is tested but seems slow.
1.144 paf 226: IIS5 todo find out proper 'illegal call' check
1.40 paf 227: */
1.122 parser 228: void real_parser_handler(
229: const char *filespec_to_process,
230: const char *request_method, bool header_only) {
231: // init socks
232: init_socks(pool);
233:
234: // init global classes
235: init_methoded_array(pool);
236: // init global variables
237: pa_globals_init(pool);
238:
239: if(!filespec_to_process)
1.144 paf 240: SAPI::die("Parser/%s", PARSER_VERSION);
1.122 parser 241:
242: // Request info
243: Request::Info request_info;
1.166 paf 244: char document_root_buf[MAX_STRING];
1.122 parser 245: if(cgi) {
246: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
247: request_info.document_root=env_document_root;
248: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
249: // IIS
1.166 paf 250: size_t len=min(sizeof(document_root_buf)-1, strlen(filespec_to_process)-strlen(path_info));
251: memcpy(document_root_buf, filespec_to_process, len); document_root_buf[len]=0;
252: request_info.document_root=document_root_buf;
1.122 parser 253: } else
1.165 paf 254: throw Exception("parser.runtime",
255: 0,
256: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
1.122 parser 257: } else {
1.166 paf 258: full_file_spec("", document_root_buf, sizeof(document_root_buf));
259: request_info.document_root=document_root_buf;
1.122 parser 260: }
261: request_info.path_translated=filespec_to_process;
262: request_info.method=request_method ? request_method : "GET";
263: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
264: request_info.query_string=query_string;
265: if(cgi) {
266: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
267: request_info.uri=env_request_uri;
268: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
269: if(query_string) {
270: char *reconstructed_uri=(char *)pool.malloc(
271: strlen(path_info)+1/*'?'*/+
272: strlen(query_string)+1/*0*/);
273: strcpy(reconstructed_uri, path_info);
274: strcat(reconstructed_uri, "?");
275: strcat(reconstructed_uri, query_string);
276: request_info.uri=reconstructed_uri;
277: } else
278: request_info.uri=path_info;
279: else
1.165 paf 280: throw Exception("parser.runtime",
281: 0,
282: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
1.145 paf 283:
284: #ifndef WIN32
285: // they've changed this under IIS5.
1.122 parser 286: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
287: size_t script_name_len=strlen(script_name);
288: size_t uri_len=strlen(request_info.uri);
289: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
290: script_name_len != uri_len) // under IIS they are the same
1.144 paf 291: SAPI::die("CGI: illegal call");
1.122 parser 292: }
1.145 paf 293: #endif
1.122 parser 294: } else
295: request_info.uri=0;
296:
297: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
298: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
299: request_info.content_length=(content_length?atoi(content_length):0);
300: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
301: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
302:
303: // prepare to process request
304: Request request(pool,
305: request_info,
1.143 paf 306: #ifdef _DEBUG
307: String::UL_HTML|String::UL_OPTIMIZE_BIT
308: #else
309: cgi ? String::UL_HTML|String::UL_OPTIMIZE_BIT : String::UL_AS_IS
310: #endif
311: ,
1.130 paf 312: true /* status_allowed */);
1.122 parser 313:
314: // some root-controlled location
1.169 paf 315: const char *root_config_filespec_cstr;
316: char root_config_filespec_buf[MAX_STRING];
1.159 paf 317: if(const char *root_config_by_env=getenv(PARSER_ROOT_CONFIG_ENV_NAME))
1.169 paf 318: root_config_filespec_cstr=root_config_by_env;
1.159 paf 319: else {
1.152 paf 320: #ifdef ROOT_CONFIG_DIR
1.169 paf 321: root_config_filespec_cstr=ROOT_CONFIG_DIR "/" CONFIG_FILE_NAME;
1.122 parser 322: #else
323: # ifdef WIN32
1.159 paf 324: // c:\windows
325: char windows_dir[MAX_STRING];
326: GetWindowsDirectory(windows_dir, MAX_STRING);
327:
1.169 paf 328:
329: snprintf(root_config_filespec_buf, MAX_STRING,
1.159 paf 330: "%s/%s",
331: windows_dir, CONFIG_FILE_NAME);
332:
1.169 paf 333: root_config_filespec_cstr=root_config_filespec_buf;
1.122 parser 334: # else
335: #error must be compiled either configure/make or MSVC++
336: # endif
337: #endif
1.159 paf 338: }
1.122 parser 339:
1.169 paf 340: const char *site_config_filespec_cstr;
341: char site_config_filespec_buf[MAX_STRING];
1.164 paf 342: if(const char *site_config_by_env=getenv(PARSER_SITE_CONFIG_ENV_NAME))
1.169 paf 343: site_config_filespec_cstr=site_config_by_env;
1.164 paf 344: else {
1.122 parser 345: // beside by binary
346: // @todo full path, not ./!
1.164 paf 347: char beside_binary_path[MAX_STRING];
348: strncpy(beside_binary_path, argv0, MAX_STRING-1); beside_binary_path[MAX_STRING-1]=0; // filespec of my binary
349: if(!(
350: rsplit(beside_binary_path, '/') ||
351: rsplit(beside_binary_path, '\\'))) { // strip filename
352: // no path, just filename
353: beside_binary_path[0]='.'; beside_binary_path[1]=0;
354: }
1.169 paf 355: snprintf(site_config_filespec_buf, MAX_STRING,
1.164 paf 356: "%s/%s",
357: beside_binary_path, CONFIG_FILE_NAME);
1.169 paf 358: site_config_filespec_cstr=site_config_filespec_buf;
1.122 parser 359: }
360:
361: // process the request
362: request.core(
1.170 paf 363: root_config_filespec_cstr, false /*fail_on_read_problem*/,
364: site_config_filespec_cstr, false /*fail_on_read_problem*/,
1.122 parser 365: header_only);
366:
367: //
368: done_socks();
369:
370: #ifdef DEBUG_POOL_MALLOC
371: extern void log_pool_stats(Pool& pool);
372: log_pool_stats(pool);
373: #endif
1.160 paf 374:
375: #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS
376: SAPI::log(pool,
1.161 paf 377: "string piece appends=%lu, wcontext_result_size=%lu, string_string_shortcut_economy_closer=%lu, total_alloc_size=%lu",
1.160 paf 378: string_piece_appends,
379: wcontext_result_size,
380: string_string_shortcut_economy,
381: total_alloc_size);
382: #endif
383:
1.122 parser 384: }
385:
386: void call_real_parser_handler__do_SEH(
387: const char *filespec_to_process,
388: const char *request_method, bool header_only) {
1.133 paf 389: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 390: LPEXCEPTION_POINTERS system_exception=0;
391: __try {
392: #endif
393: real_parser_handler(
394: filespec_to_process,
395: request_method, header_only);
396:
1.133 paf 397: #if _MSC_VER && !defined(_DEBUG)
1.122 parser 398: } __except (
399: (system_exception=GetExceptionInformation()),
400: EXCEPTION_EXECUTE_HANDLER) {
401:
402: if(system_exception)
403: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
1.165 paf 404: throw Exception(0,
405: 0,
406: "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
1.122 parser 407: else
1.165 paf 408: throw Exception(0, 0, "Exception <no exception record>");
1.122 parser 409: else
1.165 paf 410: throw Exception(0, 0, "Exception <no exception information>");
1.122 parser 411: }
412: #endif
413: }
414:
1.139 paf 415: #if _MSC_VER
1.135 paf 416: int failed_new(size_t size) {
417: SAPI::die("out of memory in 'new', failed to allocated %u bytes", size);
418: return 0; // not reached
1.131 paf 419: }
1.135 paf 420: #endif
1.131 paf 421:
1.135 paf 422: #ifdef HAVE_SET_NEW_HANDLER
1.134 paf 423: void failed_new() {
1.135 paf 424: SAPI::die("out of memory in 'new'");
1.131 paf 425: }
426: #endif
427:
1.5 paf 428: int main(int argc, char *argv[]) {
1.144 paf 429: // _asm int 3;
1.45 paf 430: argv0=argv[0];
431:
1.32 paf 432: umask(2);
433:
1.3 paf 434: // were we started as CGI?
1.146 paf 435: cgi=
1.109 parser 436: getenv("SERVER_SOFTWARE") ||
437: getenv("SERVER_NAME") ||
438: getenv("GATEWAY_INTERFACE") ||
439: getenv("REQUEST_METHOD");
1.5 paf 440:
1.10 paf 441: if(!cgi) {
442: if(argc<2) {
1.69 paf 443: printf(
1.155 paf 444: "Parser/%s Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)\n"
1.154 paf 445: "Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)\n"
1.100 parser 446: "\n"
447: "Usage: %s <file>\n",
1.69 paf 448: PARSER_VERSION,
449: argv0?argv0:"parser3");
1.67 paf 450: return 1;
1.10 paf 451: }
452: }
453:
1.100 parser 454: #ifdef WIN32
455: setmode(fileno(stdin), _O_BINARY);
456: setmode(fileno(stdout), _O_BINARY);
457: setmode(fileno(stderr), _O_BINARY);
458: #endif
459:
1.139 paf 460: #if _MSC_VER
1.138 paf 461: _set_new_handler(failed_new);
1.148 paf 462:
463: #ifdef _DEBUG
464: // Get current flag
465: int tmpFlag = _CrtSetDbgFlag( _CRTDBG_REPORT_FLAG );
466:
467: // Turn on leak-checking bit
468: tmpFlag |= _CRTDBG_LEAK_CHECK_DF;
469:
470: // Set flag to the new value
471: _CrtSetDbgFlag( tmpFlag );
472: // _CrtSetBreakAlloc(471);
473:
474: #endif
475:
1.138 paf 476: #endif
477:
478: #ifdef HAVE_SET_NEW_HANDLER
479: std::set_new_handler(failed_new);
480: #endif
481:
1.166 paf 482: char *raw_filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
483: char filespec_to_process[MAX_STRING];
484: full_file_spec(raw_filespec_to_process, filespec_to_process, sizeof(filespec_to_process));
1.10 paf 485:
1.109 parser 486: const char *request_method=getenv("REQUEST_METHOD");
1.35 paf 487: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.131 paf 488:
1.122 parser 489: try { // global try
490: call_real_parser_handler__do_SEH(
491: filespec_to_process,
492: request_method, header_only);
493: } catch(const Exception& e) { // global problem
1.44 paf 494: // don't allocate anything on pool here:
495: // possible pool' exception not catch-ed now
496: // and there could be out-of-memory exception
1.43 paf 497:
1.144 paf 498: SAPI::die("exception in request exception handler: %s", e.comment());
1.134 paf 499: #ifndef _DEBUG
1.131 paf 500: } catch(...) {
1.134 paf 501: SAPI::die("<unknown exception>");
1.133 paf 502: #endif
1.16 paf 503: }
1.122 parser 504:
1.109 parser 505:
506: #ifndef WIN32
507: //
508: if(!cgi)
509: SAPI::send_body(pool, "\n", 1);
510: #endif
1.156 paf 511: //_asm int 3;
1.134 paf 512: return 0;
1.1 paf 513: }
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