Annotation of parser3/src/targets/cgi/parser3.C, revision 1.125
1.27 paf 1: /** @file
2: Parser: scripting and CGI main.
3:
1.43 paf 4: Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)
1.113 parser 5: Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)
1.27 paf 6:
1.125 ! parser 7: $Id: parser3.C,v 1.124 2001/10/22 16:44:43 parser Exp $
1.1 paf 8: */
9:
1.40 paf 10: #include "pa_config_includes.h"
1.3 paf 11:
12: #ifdef WIN32
13: # include <windows.h>
14: #endif
1.27 paf 15:
1.37 paf 16: #include "pa_sapi.h"
1.76 paf 17: #include "classes.h"
1.24 paf 18: #include "pa_common.h"
1.2 paf 19: #include "pa_request.h"
1.57 paf 20: #include "pa_socks.h"
1.68 paf 21: #include "pa_version.h"
1.125 ! parser 22: #include "pool_storage.h"
1.69 paf 23:
1.120 parser 24: #ifdef XML
25: #include <XalanTransformer/XalanCAPI.h>
26: #endif
27:
1.84 parser 28: //#define DEBUG_POOL_MALLOC
29:
1.109 parser 30: // consts
1.113 parser 31:
32: extern const char *main_RCSIds[];
1.116 parser 33: #ifdef USE_SMTP
1.113 parser 34: extern const char *smtp_RCSIds[];
1.114 parser 35: #endif
1.113 parser 36: extern const char *gd_RCSIds[];
37: extern const char *classes_RCSIds[];
38: extern const char *types_RCSIds[];
1.115 parser 39: extern const char *parser3_RCSIds[];
1.119 parser 40: #ifdef XML
41: extern const char *xalan_patched_RCSIds[];
42: #endif
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,
1.118 parser 52: #ifdef XML
53: xalan_patched_RCSIds,
54: #endif
1.113 parser 55: 0
56: };
1.84 parser 57:
1.42 paf 58: /// IIS refuses to read bigger chunks
59: const size_t READ_POST_CHUNK_SIZE=0x400*0x400; // 1M
60:
1.45 paf 61: const char *argv0;
1.125 ! parser 62: Pool_storage pool_storage;
! 63: Pool pool(&pool_storage); // global pool [dont describe to doxygen: it confuses it with param names]
1.27 paf 64: bool cgi; ///< we were started as CGI?
1.5 paf 65:
1.46 paf 66: // SAPI
1.86 parser 67:
1.124 parser 68: static void log(const char *fmt, va_list args) {
1.61 paf 69: bool opened;
70: FILE *f=0;
71:
72: if(argv0) {
73: // beside by binary
74: char file_spec[MAX_STRING];
1.98 parser 75: strncpy(file_spec, argv0, MAX_STRING-1); file_spec[MAX_STRING-1]=0; // filespec of my binary
1.61 paf 76: rsplit(file_spec, '/'); rsplit(file_spec, '\\');// strip filename
77: strcat(file_spec, "/parser3.log");
78: f=fopen(file_spec, "at");
79: }
80: opened=f!=0;
81: if(!opened)
82: f=stderr;
83:
84: // prefix
85: time_t t=time(0);
86: const char *stamp=ctime(&t);
87: fprintf(f, "[%.*s] ", strlen(stamp)-1, stamp);
88: // message
1.117 parser 89:
90: char buf[MAX_STRING];
91: size_t size=vsnprintf(buf, MAX_STRING, fmt, args);
92: remove_crlf(buf, buf+size);
93:
94: fwrite(buf, size, 1, f);
1.61 paf 95: // newline
96: fprintf(f, "\n");
97:
98: if(opened)
99: fclose(f);
1.85 parser 100: else
101: fflush(f);
1.124 parser 102: }
103:
104: // appends to parser3.log located beside my binary if openable, to stderr otherwize
105: void SAPI::log(Pool& , const char *fmt, ...) {
106: va_list args;
107: va_start(args,fmt);
108: ::log(fmt, args);
109: va_end(args);
110: }
111:
112: void SAPI::die(const char *fmt, ...) {
113: va_list args;
114: va_start(args,fmt);
115: ::log(fmt, args);
116: va_end(args);
117:
118: exit(1);
1.61 paf 119: }
120:
1.122 parser 121: const char *SAPI::get_env(Pool& , const char *name) {
1.109 parser 122: return getenv(name);
1.28 paf 123: }
124:
1.122 parser 125: size_t SAPI::read_post(Pool& , char *buf, size_t max_bytes) {
1.59 paf 126: size_t read_size=0;
1.12 paf 127: do {
1.36 paf 128: int chunk_size=read(fileno(stdin),
1.42 paf 129: buf+read_size, min(READ_POST_CHUNK_SIZE, max_bytes-read_size));
1.12 paf 130: if(chunk_size<0)
131: break;
132: read_size+=chunk_size;
133: } while(read_size<max_bytes);
134:
135: return read_size;
1.10 paf 136: }
137:
1.122 parser 138: void SAPI::add_header_attribute(Pool& , const char *key, const char *value) {
1.68 paf 139: if(cgi)
1.20 paf 140: printf("%s: %s\n", key, value);
1.19 paf 141: }
142:
1.56 paf 143: /// @todo intelligent cache-control
1.122 parser 144: void SAPI::send_header(Pool& ) {
1.33 paf 145: if(cgi) {
1.55 paf 146: puts("expires: Fri, 23 Mar 2001 09:32:23 GMT");
1.33 paf 147:
148: // header | body delimiter
1.20 paf 149: puts("");
1.33 paf 150: }
1.30 paf 151: }
1.20 paf 152:
1.122 parser 153: void SAPI::send_body(Pool& , const void *buf, size_t size) {
1.19 paf 154: stdout_write(buf, size);
1.58 paf 155: }
156:
1.97 parser 157: //
158:
159: char *full_file_spec(char *file_name) {
1.108 parser 160: if(file_name && !strchr(file_name, '/')) {
1.97 parser 161: static char cwd[MAX_STRING]; getcwd(cwd, MAX_STRING);
162: static char buf[MAX_STRING];
163: snprintf(buf, MAX_STRING, "%s/%s", cwd, file_name);
164: return buf;
165: }
166: return file_name;
167: }
168:
1.40 paf 169: /**
1.122 parser 170: main workhorse
1.19 paf 171:
1.122 parser 172: @todo
1.40 paf 173: IIS: remove trailing default-document[index.html] from $request.uri.
174: to do that we need to consult metabase,
175: wich is tested but seems slow.
176: */
1.122 parser 177: void real_parser_handler(
178: const char *filespec_to_process,
179: const char *request_method, bool header_only) {
180: // init socks
181: init_socks(pool);
182:
183: #ifdef XML
184: /**
185: * Initialize Xerces and Xalan.
186: *
187: * Should be called only once per process before making
188: * any other API calls.
189: */
190: //_asm int 3;
191: XalanInitialize();
192: #endif
193:
194: // init global classes
195: init_methoded_array(pool);
196: // init global variables
197: pa_globals_init(pool);
198:
199: if(!filespec_to_process)
200: throw Exception(0, 0,
201: 0,
202: "Parser/%s", PARSER_VERSION);
203:
204: // Request info
205: Request::Info request_info;
206: if(cgi) {
207: if(const char *env_document_root=SAPI::get_env(pool, "DOCUMENT_ROOT"))
208: request_info.document_root=env_document_root;
209: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO")) {
210: // IIS
211: size_t len=strlen(filespec_to_process)-strlen(path_info);
212: char *buf=(char *)pool.malloc(len+1);
213: memcpy(buf, filespec_to_process, len); buf[len]=0;
214: request_info.document_root=buf;
215: } else
216: throw Exception(0, 0,
217: 0,
218: "CGI: no PATH_INFO defined(in reinventing DOCUMENT_ROOT)");
219: } else {
220: static char buf[MAX_STRING];
221: strncpy(buf, filespec_to_process, MAX_STRING-1); buf[MAX_STRING-1]=0;
222: if(rsplit(buf, '/') || rsplit(buf, '\\')) // strip filename
223: request_info.document_root=buf;
224: else
225: request_info.document_root="";
226: }
227: request_info.path_translated=filespec_to_process;
228: request_info.method=request_method ? request_method : "GET";
229: const char *query_string=SAPI::get_env(pool, "QUERY_STRING");
230: request_info.query_string=query_string;
231: if(cgi) {
232: if(const char *env_request_uri=SAPI::get_env(pool, "REQUEST_URI"))
233: request_info.uri=env_request_uri;
234: else if(const char *path_info=SAPI::get_env(pool, "PATH_INFO"))
235: if(query_string) {
236: char *reconstructed_uri=(char *)pool.malloc(
237: strlen(path_info)+1/*'?'*/+
238: strlen(query_string)+1/*0*/);
239: strcpy(reconstructed_uri, path_info);
240: strcat(reconstructed_uri, "?");
241: strcat(reconstructed_uri, query_string);
242: request_info.uri=reconstructed_uri;
243: } else
244: request_info.uri=path_info;
245: else
246: throw Exception(0, 0,
247: 0,
248: "CGI: no PATH_INFO defined(in reinventing REQUEST_URI)");
249:
250: if(const char *script_name=SAPI::get_env(pool, "SCRIPT_NAME")) {
251: size_t script_name_len=strlen(script_name);
252: size_t uri_len=strlen(request_info.uri);
253: if(strncmp(request_info.uri,script_name, script_name_len)==0 &&
254: script_name_len != uri_len) // under IIS they are the same
255: throw Exception(0, 0,
256: 0,
257: "CGI: illegal call");
258: }
259: } else
260: request_info.uri=0;
261:
262: request_info.content_type=SAPI::get_env(pool, "CONTENT_TYPE");
263: const char *content_length=SAPI::get_env(pool, "CONTENT_LENGTH");
264: request_info.content_length=(content_length?atoi(content_length):0);
265: request_info.cookie=SAPI::get_env(pool, "HTTP_COOKIE");
266: request_info.user_agent=SAPI::get_env(pool, "HTTP_USER_AGENT");
267:
268: // prepare to process request
269: Request request(pool,
270: request_info,
271: cgi ? String::UL_USER_HTML : String::UL_AS_IS
272: );
273:
274: // some root-controlled location
275: #ifdef SYSCONFDIR
276: const char *root_config_filespec=SYSCONFDIR "/" CONFIG_FILE_NAME;
277: #else
278: # ifdef WIN32
279: // c:\windows
280: char root_config_path[MAX_STRING];
281: GetWindowsDirectory(root_config_path, MAX_STRING);
282:
283: char root_config_filespec[MAX_STRING];
284: snprintf(root_config_filespec, MAX_STRING,
285: "%s/%s",
286: root_config_path, CONFIG_FILE_NAME);
287: # else
288: #error must be compiled either configure/make or MSVC++
289: # endif
290: #endif
291:
292: // beside by binary
293: // @todo full path, not ./!
294: static char site_config_path[MAX_STRING];
295: strncpy(site_config_path, argv0, MAX_STRING-1); site_config_path[MAX_STRING-1]=0; // filespec of my binary
296: if(!(
297: rsplit(site_config_path, '/') ||
298: rsplit(site_config_path, '\\'))) { // strip filename
299: // no path, just filename
300: site_config_path[0]='.'; site_config_path[1]=0;
301: }
302:
303: char site_config_filespec[MAX_STRING];
304: snprintf(site_config_filespec, MAX_STRING,
305: "%s/%s",
306: site_config_path, CONFIG_FILE_NAME);
307:
308: // process the request
309: request.core(
310: root_config_filespec, false,
311: site_config_filespec, false,
312: header_only);
313:
314: //
315: done_socks();
316:
317: #ifdef DEBUG_POOL_MALLOC
318: extern void log_pool_stats(Pool& pool);
319: log_pool_stats(pool);
320: #endif
321: }
322:
323: void call_real_parser_handler__do_SEH(
324: const char *filespec_to_process,
325: const char *request_method, bool header_only) {
1.123 parser 326: #if _MSC_VER & !defined(_DEBUG)
1.122 parser 327: LPEXCEPTION_POINTERS system_exception=0;
328: __try {
329: #endif
330: real_parser_handler(
331: filespec_to_process,
332: request_method, header_only);
333:
1.123 parser 334: #if _MSC_VER & !defined(_DEBUG)
1.122 parser 335: } __except (
336: (system_exception=GetExceptionInformation()),
337: EXCEPTION_EXECUTE_HANDLER) {
338:
339: if(system_exception)
340: if(_EXCEPTION_RECORD *er=system_exception->ExceptionRecord)
341: throw Exception(0, 0,
342: 0,
343: "Exception 0x%08X at 0x%08X", er->ExceptionCode, er->ExceptionAddress);
344: else
345: throw Exception(0, 0, 0, "Exception <no exception record>");
346: else
347: throw Exception(0, 0, 0, "Exception <no exception information>");
348: }
349: #endif
350: }
351:
1.5 paf 352: int main(int argc, char *argv[]) {
1.109 parser 353: int result;
1.45 paf 354: argv0=argv[0];
355:
1.32 paf 356: umask(2);
357:
1.3 paf 358: // were we started as CGI?
1.20 paf 359: cgi=
1.109 parser 360: getenv("SERVER_SOFTWARE") ||
361: getenv("SERVER_NAME") ||
362: getenv("GATEWAY_INTERFACE") ||
363: getenv("REQUEST_METHOD");
1.5 paf 364:
1.10 paf 365: if(!cgi) {
366: if(argc<2) {
1.69 paf 367: printf(
1.100 parser 368: "Parser/%s Copyright(c) 2001 ArtLebedev Group(http://www.artlebedev.com)\n"
369: "Author: Alexander Petrosyan <paf@design.ru>(http://design.ru/paf)\n"
370: "\n"
371: "Usage: %s <file>\n",
1.69 paf 372: PARSER_VERSION,
373: argv0?argv0:"parser3");
1.67 paf 374: return 1;
1.10 paf 375: }
376: }
377:
1.100 parser 378: #ifdef WIN32
379: setmode(fileno(stdin), _O_BINARY);
380: setmode(fileno(stdout), _O_BINARY);
381: setmode(fileno(stderr), _O_BINARY);
382: #endif
383:
1.109 parser 384: char *filespec_to_process=cgi?getenv("PATH_TRANSLATED"):argv[1];
1.36 paf 385: #ifdef WIN32
1.43 paf 386: back_slashes_to_slashes(filespec_to_process);
1.36 paf 387: #endif
1.97 parser 388: filespec_to_process=full_file_spec(filespec_to_process);
1.10 paf 389:
1.109 parser 390: const char *request_method=getenv("REQUEST_METHOD");
1.35 paf 391: bool header_only=request_method && strcasecmp(request_method, "HEAD")==0;
1.122 parser 392: try { // global try
393: call_real_parser_handler__do_SEH(
394: filespec_to_process,
395: request_method, header_only);
1.100 parser 396:
1.16 paf 397: // successful finish
1.109 parser 398: result=0;
1.122 parser 399: } catch(const Exception& e) { // global problem
1.44 paf 400: // don't allocate anything on pool here:
401: // possible pool' exception not catch-ed now
402: // and there could be out-of-memory exception
1.43 paf 403:
1.19 paf 404: const char *body=e.comment();
1.44 paf 405: // log it
406: SAPI::log(pool, "exception in request exception handler: %s", body);
407:
408: //
1.19 paf 409: int content_length=strlen(body);
1.5 paf 410:
1.35 paf 411: // prepare header
1.37 paf 412: SAPI::add_header_attribute(pool, "content-type", "text/plain");
1.19 paf 413: char content_length_cstr[MAX_NUMBER];
1.60 paf 414: snprintf(content_length_cstr, MAX_NUMBER, "%u", content_length);
1.37 paf 415: SAPI::add_header_attribute(pool, "content-length", content_length_cstr);
1.35 paf 416:
417: // send header
1.37 paf 418: SAPI::send_header(pool);
1.19 paf 419:
420: // body
1.35 paf 421: if(!header_only)
1.37 paf 422: SAPI::send_body(pool, body, content_length);
1.94 parser 423:
1.16 paf 424: // unsuccessful finish
1.109 parser 425: result=1;
1.16 paf 426: }
1.122 parser 427:
1.109 parser 428:
429: #ifndef WIN32
430: //
431: if(!cgi)
432: SAPI::send_body(pool, "\n", 1);
433: #endif
434: return result;
1.1 paf 435: }
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