Annotation of parser3/src/include/pa_request.h, revision 1.138
1.61 paf 1: /** @file
1.62 paf 2: Parser: request class decl.
3:
1.120 paf 4: Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.121 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.32 paf 6:
1.138 ! paf 7: $Id: pa_request.h,v 1.137 2002/06/12 11:40:31 paf Exp $
1.1 paf 8: */
9:
10: #ifndef PA_REQUEST_H
11: #define PA_REQUEST_H
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"
1.90 parser 23: #include "pa_vmath.h"
1.56 paf 24: #include "pa_vrequest.h"
1.57 paf 25: #include "pa_vresponse.h"
1.60 paf 26: #include "pa_vcookie.h"
1.77 paf 27: #include "pa_sql_driver_manager.h"
1.44 paf 28:
1.112 paf 29: #ifdef RESOURCES_DEBUG
30: #include <sys/resource.h>
31: #endif
32:
1.128 paf 33: // consts
34:
1.134 paf 35: #define MAIN_METHOD_NAME "main"
1.128 paf 36: const uint ANTI_ENDLESS_EXECUTE_RECOURSION=500;
37:
38: // defines
39:
1.7 paf 40: #ifndef NO_STRING_ORIGIN
1.40 paf 41: # define COMPILE_PARAMS \
42: const char *source, \
1.46 paf 43: VStateless_class *aclass, const String *name, \
44: VStateless_class *base_class, \
1.40 paf 45: const char *file
46: # define COMPILE(source, aclass, name, base_class, file) \
47: real_compile(source, aclass, name, base_class, file)
1.7 paf 48: #else
1.40 paf 49: # define COMPILE_PARAMS \
50: const char *source, \
1.46 paf 51: VStateless_class *aclass, const String *name, \
52: VStateless_class *base_class
1.40 paf 53: # define COMPILE(source, aclass, name, base_class, file) \
54: real_compile(source, aclass, name, base_class)
1.7 paf 55: #endif
1.4 paf 56:
1.39 paf 57: class Temp_lang;
1.84 paf 58: class Methoded;
1.116 paf 59: class VMethodFrame;
1.1 paf 60:
1.61 paf 61: /// Main workhorse.
1.7 paf 62: class Request : public Pooled {
1.107 paf 63: friend class Temp_lang;
1.117 paf 64: friend class Temp_connection;
1.1 paf 65: public:
1.112 paf 66:
67: #ifdef RESOURCES_DEBUG
68: /// measures
69: double sql_connect_time;
70: double sql_request_time;
71: #endif
1.61 paf 72:
73: /// some information from web server
1.65 paf 74: class Info {
75: public:
1.53 paf 76: const char *document_root;
77: const char *path_translated;
1.56 paf 78: const char *method;
1.53 paf 79: const char *query_string;
1.56 paf 80: const char *uri;
1.53 paf 81: const char *content_type;
82: size_t content_length;
1.60 paf 83: const char *cookie;
1.53 paf 84: };
85:
1.50 paf 86: Request(Pool& apool,
1.53 paf 87: Info& ainfo,
1.111 paf 88: uchar adefault_lang, ///< all tainted data default untainting lang
1.110 paf 89: bool status_allowed ///< status class allowed
1.50 paf 90: );
1.118 paf 91: ~Request();
1.1 paf 92:
1.61 paf 93: /// global classes
1.6 paf 94: Hash& classes() { return fclasses; }
95:
1.65 paf 96: /**
97: core request processing
98:
99: BEWARE: may throw exception to you: catch it!
100: */
101: void core(
1.138 ! paf 102: const char *config_filespec, ///< system config filespec
! 103: bool config_fail_on_read_problem, ///< fail if system config file not found
1.65 paf 104: bool header_only);
1.17 paf 105:
1.61 paf 106: /// executes ops
1.89 parser 107: void execute(const Array& ops); // execute.C
1.127 paf 108: /// execute ops with anti-recoursion check
1.128 paf 109: void recoursion_checked_execute(const String *name, const Array& ops) {
110: // anti_endless_execute_recoursion
111: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
112: anti_endless_execute_recoursion=0; // give @exception a chance
113: throw Exception("parser.runtime",
114: name,
115: "call canceled - endless recursion detected");
116: }
117: execute(ops); // execute it
118: anti_endless_execute_recoursion--;
119: }
1.40 paf 120:
1.64 paf 121: /// compiles the file, maybe forcing it's class @a name and @a base_class.
1.46 paf 122: VStateless_class *use_file(
1.94 parser 123: const String& file_name,
124: bool ignore_class_path=false, bool fail_on_read_problem=true,
1.45 paf 125: const String *name=0,
1.46 paf 126: VStateless_class *base_class=0); // core.C
1.64 paf 127: /// compiles a @a source buffer
1.46 paf 128: VStateless_class *use_buf(
1.40 paf 129: const char *source, const char *file,
1.46 paf 130: VStateless_class *aclass=0, const String *name=0,
131: VStateless_class *base_class=0); // 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:
219: bool origins_mode() {
220: return main_class->get_element(*origins_mode_name)!=0; // $ORIGINS mode
1.117 paf 221: }
222:
1.17 paf 223: public:
1.22 paf 224:
1.61 paf 225: /// info from web server
1.53 paf 226: Info& info;
1.81 paf 227: /// user's post data
228: char *post_data; size_t post_size;
1.53 paf 229:
1.134 paf 230: /// name of 'main' method
231: const String main_method_name;
232:
1.78 paf 233: /// operators are methods of this class
1.84 paf 234: Methoded& OP;
1.86 paf 235: /// $env:fields
1.57 paf 236: VEnv env;
1.108 paf 237: /// $status:fields
238: VStatus status;
1.86 paf 239: /// $form:elements
1.57 paf 240: VForm form;
1.90 parser 241: /// $math:constants
242: VMath math;
1.86 paf 243: /// $request:elements
1.57 paf 244: VRequest request;
1.86 paf 245: /// $response:elements
1.57 paf 246: VResponse response;
1.86 paf 247: /// $cookie:elements
1.60 paf 248: VCookie cookie;
1.70 paf 249:
1.123 paf 250: //@{ request processing status
251: /// execution stack
252: Stack stack;
1.61 paf 253: /// contexts
1.22 paf 254: Value *self, *root, *rcontext;
1.61 paf 255: /// contexts
1.22 paf 256: WContext *wcontext;
1.124 paf 257: /// exception stack trace
258: Stack exception_trace;
1.123 paf 259: //@}
1.85 paf 260:
1.86 paf 261: /// 'MAIN' class conglomerat
1.85 paf 262: VStateless_class *main_class;
1.76 paf 263:
1.87 paf 264: /// classes configured data
265: Hash classes_conf;
266:
1.7 paf 267: private: // core data
1.6 paf 268:
1.89 parser 269: /// classes
1.6 paf 270: Hash fclasses;
1.67 paf 271:
1.89 parser 272: /// already used files to avoid cyclic uses
1.67 paf 273: Hash used_files;
1.89 parser 274:
275: /** endless execute(execute(... preventing counter
276: @see ANTI_ENDLESS_EXECUTE_RECOURSION
277: */
278: uint anti_endless_execute_recoursion;
1.136 paf 279:
280: private:
281:
282: /// already executed some @conf method
283: bool configure_admin_done;
284:
285: void configure_admin(VStateless_class& conf_class, const String *source);
1.99 parser 286:
1.7 paf 287: private: // compile.C
288:
1.46 paf 289: VStateless_class& real_compile(COMPILE_PARAMS);
1.7 paf 290:
291: private: // execute.C
292:
1.137 paf 293: void execute_method(Value& aself, const Method& method,
294: const String **return_string);
1.116 paf 295: const String& execute_method(VMethodFrame& amethodFrame, const Method& method);
296: const String *execute_virtual_method(Value& aself, const String& method_name);
1.137 paf 297: void execute_nonvirtual_method(VStateless_class& aclass,
1.116 paf 298: const String& method_name,
1.137 paf 299: const String **return_string,
300: const Method **return_method=0);
1.9 paf 301:
1.132 paf 302: Value *get_element(const String *& remember_name, bool can_call_operator);
1.22 paf 303:
1.58 paf 304: private: // defaults
305:
1.111 paf 306: const uchar fdefault_lang;
1.68 paf 307: Value *default_content_type;
1.80 paf 308:
309: private: // mime types
310:
311: /// $MAIN:MIME-TYPES
312: Table *mime_types;
1.22 paf 313:
1.39 paf 314: private: // lang manipulation
1.22 paf 315:
1.111 paf 316: uchar set_lang(uchar alang) {
317: uchar result=flang;
1.39 paf 318: flang=alang;
319: return result;
320: }
1.111 paf 321: void restore_lang(uchar alang) {
1.39 paf 322: flang=alang;
323: }
324:
1.117 paf 325: private: // lang&raw
326:
327: uchar flang;
328:
329:
330: private: // connection manipulation
331:
332: SQL_Connection *set_connection(SQL_Connection *aconnection) {
333: SQL_Connection *result=fconnection;
334: fconnection=aconnection;
335: return result;
336: }
337: void restore_connection(SQL_Connection *aconnection) {
338: fconnection=aconnection;
339: }
340:
341: private:
342:
343: /// connection
344: SQL_Connection *fconnection;
1.126 paf 345:
1.75 paf 346: void output_result(const VFile& body_file, bool header_only);
1.39 paf 347: };
348:
1.61 paf 349: /// Auto-object used for temporary changing Request::flang.
1.39 paf 350: class Temp_lang {
351: Request& frequest;
1.111 paf 352: uchar saved_lang;
1.39 paf 353: public:
1.111 paf 354: Temp_lang(Request& arequest, uchar alang) :
1.39 paf 355: frequest(arequest),
356: saved_lang(arequest.set_lang(alang)) {
357: }
358: ~Temp_lang() {
359: frequest.restore_lang(saved_lang);
1.117 paf 360: }
361: };
362:
363: /// Auto-object used for temporary changing Request::fconnection.
364: class Temp_connection {
365: Request& frequest;
366: SQL_Connection *saved_connection;
367: public:
368: Temp_connection(Request& arequest, SQL_Connection *aconnection) :
369: frequest(arequest),
370: saved_connection(arequest.set_connection(aconnection)) {
371: }
372: ~Temp_connection() {
373: frequest.restore_connection(saved_connection);
1.39 paf 374: }
1.91 parser 375: };
376:
377: /**
378: @b method parameters passed in this array.
379: contains handy typecast ad junction/not junction ensurers
380:
381: */
382: class MethodParams : public Array {
383: public:
384: MethodParams(Pool& pool, const String& amethod_name) : Array(pool),
385: fmethod_name(amethod_name) {
386: }
387:
388: /// handy typecast. I long for templates
389: Value& get(int index) {
390: return *static_cast<Value *>(Array::get(index));
391: }
392: /// handy is-value-a-junction ensurer
393: Value& as_junction(int index, const char *msg) {
394: return get_as(index, true, msg);
395: }
396: /// handy value-is-not-a-junction ensurer
397: Value& as_no_junction(int index, const char *msg) {
398: return get_as(index, false, msg);
399: }
400: /// handy expression auto-processing to double
1.102 parser 401: double as_double(int index, const char *msg, Request& r) {
402: return get_processed(index, msg, r).as_double();
1.91 parser 403: }
404: /// handy expression auto-processing to int
1.102 parser 405: int as_int(int index, const char *msg, Request& r) {
406: return get_processed(index, msg, r).as_int();
1.103 parser 407: }
408: /// handy expression auto-processing to bool
409: bool as_bool(int index, const char *msg, Request& r) {
410: return get_processed(index, msg, r).as_bool();
1.91 parser 411: }
412: /// handy string ensurer
413: const String& as_string(int index, const char *msg) {
414: return as_no_junction(index, msg).as_string();
415: }
416:
417: private:
418:
419: /// handy value-is/not-a-junction ensurer
420: Value& get_as(int index, bool as_junction, const char *msg) {
421: Value& result=get(index);
422: if((result.get_junction()!=0) ^ as_junction)
1.125 paf 423: throw Exception("parser.runtime",
1.91 parser 424: &fmethod_name,
425: "%s (parameter #%d)", msg, 1+index);
1.104 parser 426:
1.91 parser 427: return result;
428: }
429:
1.102 parser 430: Value& get_processed(int index, const char *msg, Request& r) {
1.126 paf 431: return r.process_to_value(as_junction(index, msg), 0/*no name*/);
1.91 parser 432: }
433:
434: private:
435:
436: const String& fmethod_name;
437:
1.4 paf 438: };
1.1 paf 439:
440: #endif
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