Annotation of parser3/src/include/pa_request.h, revision 1.160.2.1
1.61 paf 1: /** @file
1.62 paf 2: Parser: request class decl.
3:
1.160 paf 4: Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
1.121 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1 paf 6: */
7:
8: #ifndef PA_REQUEST_H
9: #define PA_REQUEST_H
1.141 paf 10:
1.160.2.1! paf 11: static const char* IDENT_REQUEST_H="$Date: 2003/01/21 15:51:11 $";
1.1 paf 12:
13: #include "pa_pool.h"
1.5 paf 14: #include "pa_hash.h"
1.7 paf 15: #include "pa_wcontext.h"
1.6 paf 16: #include "pa_value.h"
1.7 paf 17: #include "pa_stack.h"
1.12 paf 18: #include "pa_vclass.h"
1.45 paf 19: #include "pa_vobject.h"
1.47 paf 20: #include "pa_venv.h"
1.108 paf 21: #include "pa_vstatus.h"
1.48 paf 22: #include "pa_vform.h"
1.140 paf 23: #include "pa_vmail.h"
1.90 parser 24: #include "pa_vmath.h"
1.56 paf 25: #include "pa_vrequest.h"
1.57 paf 26: #include "pa_vresponse.h"
1.60 paf 27: #include "pa_vcookie.h"
1.77 paf 28: #include "pa_sql_driver_manager.h"
1.44 paf 29:
1.112 paf 30: #ifdef RESOURCES_DEBUG
31: #include <sys/resource.h>
32: #endif
33:
1.128 paf 34: // consts
35:
1.134 paf 36: #define MAIN_METHOD_NAME "main"
1.128 paf 37: const uint ANTI_ENDLESS_EXECUTE_RECOURSION=500;
38:
39: // defines
40:
1.7 paf 41: #ifndef NO_STRING_ORIGIN
1.40 paf 42: # define COMPILE_PARAMS \
1.154 paf 43: VStateless_class& aclass, const char *source \
44: , const char *file
45: # define COMPILE(aclass, source, file) \
46: real_compile(aclass, source, file)
1.7 paf 47: #else
1.40 paf 48: # define COMPILE_PARAMS \
1.154 paf 49: VStateless_class& aclass, const char *source
50: # define COMPILE(aclass, source, file) \
51: real_compile(aclass, source)
1.7 paf 52: #endif
1.4 paf 53:
1.39 paf 54: class Temp_lang;
1.84 paf 55: class Methoded;
1.116 paf 56: class VMethodFrame;
1.1 paf 57:
1.61 paf 58: /// Main workhorse.
1.7 paf 59: class Request : public Pooled {
1.107 paf 60: friend class Temp_lang;
1.117 paf 61: friend class Temp_connection;
1.148 paf 62: friend class Request_context_saver;
1.155 paf 63: friend class Temp_request_self;
1.1 paf 64: public:
1.112 paf 65:
1.160.2.1! paf 66: Pool& pool() { return fpool; }
! 67:
1.112 paf 68: #ifdef RESOURCES_DEBUG
69: /// measures
70: double sql_connect_time;
71: double sql_request_time;
72: #endif
1.61 paf 73:
74: /// some information from web server
1.65 paf 75: class Info {
76: public:
1.53 paf 77: const char *document_root;
78: const char *path_translated;
1.56 paf 79: const char *method;
1.53 paf 80: const char *query_string;
1.56 paf 81: const char *uri;
1.53 paf 82: const char *content_type;
83: size_t content_length;
1.60 paf 84: const char *cookie;
1.140 paf 85: bool mail_received;
1.53 paf 86: };
87:
1.160.2.1! paf 88: Request(
1.53 paf 89: Info& ainfo,
1.111 paf 90: uchar adefault_lang, ///< all tainted data default untainting lang
1.110 paf 91: bool status_allowed ///< status class allowed
1.50 paf 92: );
1.118 paf 93: ~Request();
1.1 paf 94:
1.61 paf 95: /// global classes
1.6 paf 96: Hash& classes() { return fclasses; }
97:
1.65 paf 98: /**
99: core request processing
100:
101: BEWARE: may throw exception to you: catch it!
102: */
103: void core(
1.138 paf 104: const char *config_filespec, ///< system config filespec
105: bool config_fail_on_read_problem, ///< fail if system config file not found
1.65 paf 106: bool header_only);
1.17 paf 107:
1.61 paf 108: /// executes ops
1.147 paf 109: void execute(const Array& ops); // execute.C
1.127 paf 110: /// execute ops with anti-recoursion check
1.128 paf 111: void recoursion_checked_execute(const String *name, const Array& ops) {
112: // anti_endless_execute_recoursion
113: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
114: anti_endless_execute_recoursion=0; // give @exception a chance
115: throw Exception("parser.runtime",
116: name,
117: "call canceled - endless recursion detected");
118: }
1.147 paf 119: execute(ops); // execute it
1.128 paf 120: anti_endless_execute_recoursion--;
121: }
1.40 paf 122:
1.64 paf 123: /// compiles the file, maybe forcing it's class @a name and @a base_class.
1.154 paf 124: VStateless_class *use_file(VStateless_class& aclass,
1.94 parser 125: const String& file_name,
1.149 paf 126: bool ignore_class_path=false,
1.154 paf 127: bool fail_on_read_problem=true, bool fail_on_file_absence=true); // core.C
1.64 paf 128: /// compiles a @a source buffer
1.154 paf 129: VStateless_class *use_buf(VStateless_class& aclass,
130: const char *source,
131: const String& filespec, const char *filespec_cstr); // core.C
1.28 paf 132:
1.129 paf 133: /// processes any code-junction there may be inside of @a value
1.131 paf 134: StringOrValue process(Value& input_value, bool intercept_string=true); // execute.C
1.129 paf 135: //@{ convinient helpers
136: const String& process_to_string(Value& input_value) {
137: return process(input_value, true/*intercept_string*/).as_string();
138: }
139: Value& process_to_value(Value& input_value, bool intercept_string=true) {
140: return process(input_value, intercept_string).as_value();
1.126 paf 141: }
142: //@}
1.131 paf 143:
1.126 paf 144:
1.131 paf 145: #define DEFINE_DUAL(modification) \
146: void write_##modification##_lang(StringOrValue dual) { \
147: if(const String *string=dual.get_string()) \
148: write_##modification##_lang(*string); \
149: else \
150: write_##modification##_lang(*dual.get_value()); \
151: }
1.132 paf 152: #define DEFINE_DUAL_CHECKED(modification) \
153: void write_##modification##_lang(StringOrValue dual, const String *origin) { \
154: if(const String *string=dual.get_string()) \
155: write_##modification##_lang(*string); \
156: else \
157: write_##modification##_lang(*dual.get_value(), origin); \
158: }
1.131 paf 159:
1.61 paf 160: /// appending, sure of clean string inside
1.65 paf 161: void write_no_lang(const String& astring) {
1.111 paf 162: wcontext->write(astring,
163: String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT);
1.49 paf 164: }
1.131 paf 165: /// appending sure value, that would be converted to clean string
166: void write_no_lang(Value& avalue) {
167: if(wcontext->get_in_expression())
168: wcontext->write(avalue);
169: else
170: wcontext->write(avalue,
171: String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT);
172: }
173: //DEFINE_DUAL(no)
174:
1.61 paf 175: /// appending string, passing language built into string being written
1.65 paf 176: void write_pass_lang(const String& astring) {
177: wcontext->write(astring, String::UL_PASS_APPENDED);
1.59 paf 178: }
1.131 paf 179: /// appending possible string, passing language built into string being written
180: void write_pass_lang(Value& avalue) {
181: wcontext->write(avalue, String::UL_PASS_APPENDED);
182: }
183: DEFINE_DUAL(pass)
184:
1.61 paf 185: /// appending possible string, assigning untaint language
1.40 paf 186: void write_assign_lang(Value& avalue) {
1.39 paf 187: wcontext->write(avalue, flang);
1.106 parser 188: }
1.132 paf 189: /// appending possible string, assigning untaint language
190: void write_assign_lang(Value& avalue, const String *origin) {
191: wcontext->write(avalue, flang, origin);
192: }
1.106 parser 193: /// appending string, assigning untaint language
194: void write_assign_lang(const String& astring) {
195: wcontext->write(astring, flang);
1.22 paf 196: }
1.131 paf 197: DEFINE_DUAL(assign)
1.132 paf 198: DEFINE_DUAL_CHECKED(assign)
1.22 paf 199:
1.64 paf 200: /// returns relative to @a path path to @a file
1.69 paf 201: const String& relative(const char *apath, const String& relative_name);
1.61 paf 202:
1.64 paf 203: /// returns an absolute @a path to relative @a name
1.69 paf 204: const String& absolute(const String& relative_name);
1.42 paf 205:
1.80 paf 206: /// returns the mime type of 'user_file_name_cstr'
207: const String& mime_type_of(const char *user_file_name_cstr);
208:
1.117 paf 209: /// returns current SQL connection if any
210: SQL_Connection *connection(const String *source) {
211: if(!fconnection && source)
1.125 paf 212: throw Exception("parser.runtime",
1.117 paf 213: source,
214: "outside of 'connect' operator");
215:
216: return fconnection;
1.133 paf 217: }
218:
1.154 paf 219: bool origins_mode();
1.117 paf 220:
1.158 paf 221: void interrupt() { finterrupted=true; }
222: bool interrupted() { return finterrupted; }
223:
1.17 paf 224: public:
1.22 paf 225:
1.61 paf 226: /// info from web server
1.53 paf 227: Info& info;
1.81 paf 228: /// user's post data
1.145 paf 229: const char *post_data; size_t post_size;
1.53 paf 230:
1.134 paf 231: /// name of 'main' method
232: const String main_method_name;
233:
1.154 paf 234: /// 'MAIN' class conglomerat & operators are methods of this class
235: VClass& main_class;
1.86 paf 236: /// $env:fields
1.57 paf 237: VEnv env;
1.108 paf 238: /// $status:fields
239: VStatus status;
1.86 paf 240: /// $form:elements
1.57 paf 241: VForm form;
1.140 paf 242: /// $mail
243: VMail mail;
1.90 parser 244: /// $math:constants
245: VMath math;
1.86 paf 246: /// $request:elements
1.57 paf 247: VRequest request;
1.86 paf 248: /// $response:elements
1.57 paf 249: VResponse response;
1.86 paf 250: /// $cookie:elements
1.60 paf 251: VCookie cookie;
1.70 paf 252:
1.148 paf 253: /// classes configured data
254: Hash classes_conf;
255:
256: private:
1.160.2.1! paf 257:
! 258: Pool fpool;
1.148 paf 259:
1.123 paf 260: //@{ request processing status
1.148 paf 261: /// exception stack trace
262: Stack exception_trace;
1.123 paf 263: /// execution stack
264: Stack stack;
1.61 paf 265: /// contexts
1.146 paf 266: VMethodFrame *method_frame;
267: Value *rcontext;
1.22 paf 268: WContext *wcontext;
1.148 paf 269: /// current language
270: uchar flang;
271: /// current connection
272: SQL_Connection *fconnection;
1.123 paf 273: //@}
1.158 paf 274: /// interrupted flag, raised on signals [SIGPIPE]
275: bool finterrupted;
1.85 paf 276:
1.148 paf 277: public: // status read methods
1.76 paf 278:
1.148 paf 279: VMethodFrame *get_method_frame() { return method_frame; }
1.157 paf 280: Value *get_self();
1.87 paf 281:
1.7 paf 282: private: // core data
1.6 paf 283:
1.89 parser 284: /// classes
1.6 paf 285: Hash fclasses;
1.67 paf 286:
1.89 parser 287: /// already used files to avoid cyclic uses
1.67 paf 288: Hash used_files;
1.89 parser 289:
290: /** endless execute(execute(... preventing counter
291: @see ANTI_ENDLESS_EXECUTE_RECOURSION
292: */
293: uint anti_endless_execute_recoursion;
1.136 paf 294:
295: private:
296:
297: /// already executed some @conf method
298: bool configure_admin_done;
299:
300: void configure_admin(VStateless_class& conf_class, const String *source);
1.99 parser 301:
1.7 paf 302: private: // compile.C
303:
1.46 paf 304: VStateless_class& real_compile(COMPILE_PARAMS);
1.7 paf 305:
306: private: // execute.C
307:
1.139 paf 308: /// for @postprocess[body]
309: const String& execute_method(VMethodFrame& amethodFrame, const Method& method);
310: //{ for @conf[filespec] and @auto[filespec]
311: void execute_method(Value& aself,
312: const Method& method, VString *optional_param,
1.137 paf 313: const String **return_string);
314: void execute_nonvirtual_method(VStateless_class& aclass,
1.154 paf 315: const String& method_name, VString *optional_param,
1.137 paf 316: const String **return_string,
317: const Method **return_method=0);
1.139 paf 318: //}
319: /// for @main[]
320: const String *execute_virtual_method(Value& aself, const String& method_name);
1.9 paf 321:
1.156 paf 322: Value *get_element(const String *& remember_name, bool can_call_operator);
1.22 paf 323:
1.58 paf 324: private: // defaults
325:
1.111 paf 326: const uchar fdefault_lang;
1.68 paf 327: Value *default_content_type;
1.80 paf 328:
329: private: // mime types
330:
331: /// $MAIN:MIME-TYPES
332: Table *mime_types;
1.22 paf 333:
1.39 paf 334: private: // lang manipulation
1.22 paf 335:
1.111 paf 336: uchar set_lang(uchar alang) {
337: uchar result=flang;
1.39 paf 338: flang=alang;
339: return result;
340: }
1.111 paf 341: void restore_lang(uchar alang) {
1.39 paf 342: flang=alang;
343: }
344:
1.117 paf 345: private: // connection manipulation
346:
347: SQL_Connection *set_connection(SQL_Connection *aconnection) {
348: SQL_Connection *result=fconnection;
349: fconnection=aconnection;
350: return result;
351: }
352: void restore_connection(SQL_Connection *aconnection) {
353: fconnection=aconnection;
354: }
355:
356: private:
357:
1.159 paf 358: void output_result(const VFile& body_file, bool header_only, bool as_attachment);
1.148 paf 359: };
360:
361: /// Auto-object used to save request context across ^try body
362: class Request_context_saver {
363: Request& fr;
364:
365: /// exception stack trace
366: int exception_trace;
367: /// execution stack
368: int stack;
369: /// contexts
370: VMethodFrame *method_frame;
371: Value *rcontext;
372: WContext *wcontext;
373: /// current language
374: uchar flang;
375: /// current connection
1.117 paf 376: SQL_Connection *fconnection;
1.126 paf 377:
1.148 paf 378: public:
379: Request_context_saver(Request& ar) :
380: exception_trace(ar.exception_trace.top_index()),
381: stack(ar.stack.top_index()),
382: method_frame(ar.method_frame),
383: rcontext(ar.rcontext),
384: wcontext(ar.wcontext),
385: flang(ar.flang),
386: fconnection(ar.fconnection),
387: fr(ar) {}
1.153 paf 388: void restore() {
1.148 paf 389: fr.exception_trace.top_index(exception_trace);
390: fr.stack.top_index(stack);
1.157 paf 391: fr.method_frame=method_frame, fr.rcontext=rcontext; fr.wcontext=wcontext;
1.148 paf 392: fr.flang=flang;
393: fr.fconnection=fconnection;
394: }
1.39 paf 395: };
396:
1.61 paf 397: /// Auto-object used for temporary changing Request::flang.
1.39 paf 398: class Temp_lang {
399: Request& frequest;
1.111 paf 400: uchar saved_lang;
1.39 paf 401: public:
1.111 paf 402: Temp_lang(Request& arequest, uchar alang) :
1.39 paf 403: frequest(arequest),
404: saved_lang(arequest.set_lang(alang)) {
405: }
406: ~Temp_lang() {
407: frequest.restore_lang(saved_lang);
1.117 paf 408: }
409: };
410:
411: /// Auto-object used for temporary changing Request::fconnection.
412: class Temp_connection {
413: Request& frequest;
414: SQL_Connection *saved_connection;
415: public:
416: Temp_connection(Request& arequest, SQL_Connection *aconnection) :
417: frequest(arequest),
418: saved_connection(arequest.set_connection(aconnection)) {
419: }
420: ~Temp_connection() {
421: frequest.restore_connection(saved_connection);
1.39 paf 422: }
1.91 parser 423: };
424:
425: /**
426: @b method parameters passed in this array.
427: contains handy typecast ad junction/not junction ensurers
428:
429: */
430: class MethodParams : public Array {
431: public:
432: MethodParams(Pool& pool, const String& amethod_name) : Array(pool),
433: fmethod_name(amethod_name) {
434: }
435:
436: /// handy typecast. I long for templates
437: Value& get(int index) {
438: return *static_cast<Value *>(Array::get(index));
439: }
440: /// handy is-value-a-junction ensurer
441: Value& as_junction(int index, const char *msg) {
442: return get_as(index, true, msg);
443: }
444: /// handy value-is-not-a-junction ensurer
445: Value& as_no_junction(int index, const char *msg) {
446: return get_as(index, false, msg);
447: }
448: /// handy expression auto-processing to double
1.102 parser 449: double as_double(int index, const char *msg, Request& r) {
450: return get_processed(index, msg, r).as_double();
1.91 parser 451: }
452: /// handy expression auto-processing to int
1.102 parser 453: int as_int(int index, const char *msg, Request& r) {
454: return get_processed(index, msg, r).as_int();
1.103 parser 455: }
456: /// handy expression auto-processing to bool
457: bool as_bool(int index, const char *msg, Request& r) {
458: return get_processed(index, msg, r).as_bool();
1.91 parser 459: }
460: /// handy string ensurer
461: const String& as_string(int index, const char *msg) {
462: return as_no_junction(index, msg).as_string();
463: }
464:
465: private:
466:
467: /// handy value-is/not-a-junction ensurer
468: Value& get_as(int index, bool as_junction, const char *msg) {
469: Value& result=get(index);
470: if((result.get_junction()!=0) ^ as_junction)
1.125 paf 471: throw Exception("parser.runtime",
1.91 parser 472: &fmethod_name,
473: "%s (parameter #%d)", msg, 1+index);
1.104 parser 474:
1.91 parser 475: return result;
476: }
477:
1.102 parser 478: Value& get_processed(int index, const char *msg, Request& r) {
1.126 paf 479: return r.process_to_value(as_junction(index, msg), 0/*no name*/);
1.91 parser 480: }
481:
482: private:
483:
484: const String& fmethod_name;
485:
1.4 paf 486: };
1.1 paf 487:
488: #endif
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