Annotation of parser3/src/include/pa_request.h, revision 1.137
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:
1.137 ! paf 7: $Id: pa_request.h,v 1.136 2002/06/12 10:58:42 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(
1.95 parser 102: const char *root_config_filespec, ///< system config filespec
103: bool root_config_fail_on_read_problem, ///< fail if system config file not found
104: const char *site_config_filespec, ///< site config filespec
105: bool site_config_fail_on_read_problem, ///< fail if site config file not found
1.65 paf 106: bool header_only);
1.17 paf 107:
1.61 paf 108: /// executes ops
1.89 parser 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: }
119: execute(ops); // execute it
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.
1.46 paf 124: VStateless_class *use_file(
1.94 parser 125: const String& file_name,
126: bool ignore_class_path=false, bool fail_on_read_problem=true,
1.45 paf 127: const String *name=0,
1.46 paf 128: VStateless_class *base_class=0); // core.C
1.64 paf 129: /// compiles a @a source buffer
1.46 paf 130: VStateless_class *use_buf(
1.40 paf 131: const char *source, const char *file,
1.46 paf 132: VStateless_class *aclass=0, const String *name=0,
133: VStateless_class *base_class=0); // core.C
1.28 paf 134:
1.129 paf 135: /// processes any code-junction there may be inside of @a value
1.131 paf 136: StringOrValue process(Value& input_value, bool intercept_string=true); // execute.C
1.129 paf 137: //@{ convinient helpers
138: const String& process_to_string(Value& input_value) {
139: return process(input_value, true/*intercept_string*/).as_string();
140: }
141: Value& process_to_value(Value& input_value, bool intercept_string=true) {
142: return process(input_value, intercept_string).as_value();
1.126 paf 143: }
144: //@}
1.131 paf 145:
1.126 paf 146:
1.131 paf 147: #define DEFINE_DUAL(modification) \
148: void write_##modification##_lang(StringOrValue dual) { \
149: if(const String *string=dual.get_string()) \
150: write_##modification##_lang(*string); \
151: else \
152: write_##modification##_lang(*dual.get_value()); \
153: }
1.132 paf 154: #define DEFINE_DUAL_CHECKED(modification) \
155: void write_##modification##_lang(StringOrValue dual, const String *origin) { \
156: if(const String *string=dual.get_string()) \
157: write_##modification##_lang(*string); \
158: else \
159: write_##modification##_lang(*dual.get_value(), origin); \
160: }
1.131 paf 161:
1.61 paf 162: /// appending, sure of clean string inside
1.65 paf 163: void write_no_lang(const String& astring) {
1.111 paf 164: wcontext->write(astring,
165: String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT);
1.49 paf 166: }
1.131 paf 167: /// appending sure value, that would be converted to clean string
168: void write_no_lang(Value& avalue) {
169: if(wcontext->get_in_expression())
170: wcontext->write(avalue);
171: else
172: wcontext->write(avalue,
173: String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT);
174: }
175: //DEFINE_DUAL(no)
176:
1.61 paf 177: /// appending string, passing language built into string being written
1.65 paf 178: void write_pass_lang(const String& astring) {
179: wcontext->write(astring, String::UL_PASS_APPENDED);
1.59 paf 180: }
1.131 paf 181: /// appending possible string, passing language built into string being written
182: void write_pass_lang(Value& avalue) {
183: wcontext->write(avalue, String::UL_PASS_APPENDED);
184: }
185: DEFINE_DUAL(pass)
186:
1.61 paf 187: /// appending possible string, assigning untaint language
1.40 paf 188: void write_assign_lang(Value& avalue) {
1.39 paf 189: wcontext->write(avalue, flang);
1.106 parser 190: }
1.132 paf 191: /// appending possible string, assigning untaint language
192: void write_assign_lang(Value& avalue, const String *origin) {
193: wcontext->write(avalue, flang, origin);
194: }
1.106 parser 195: /// appending string, assigning untaint language
196: void write_assign_lang(const String& astring) {
197: wcontext->write(astring, flang);
1.22 paf 198: }
1.131 paf 199: DEFINE_DUAL(assign)
1.132 paf 200: DEFINE_DUAL_CHECKED(assign)
1.22 paf 201:
1.64 paf 202: /// returns relative to @a path path to @a file
1.69 paf 203: const String& relative(const char *apath, const String& relative_name);
1.61 paf 204:
1.64 paf 205: /// returns an absolute @a path to relative @a name
1.69 paf 206: const String& absolute(const String& relative_name);
1.42 paf 207:
1.80 paf 208: /// returns the mime type of 'user_file_name_cstr'
209: const String& mime_type_of(const char *user_file_name_cstr);
210:
1.117 paf 211: /// returns current SQL connection if any
212: SQL_Connection *connection(const String *source) {
213: if(!fconnection && source)
1.125 paf 214: throw Exception("parser.runtime",
1.117 paf 215: source,
216: "outside of 'connect' operator");
217:
218: return fconnection;
1.133 paf 219: }
220:
221: bool origins_mode() {
222: return main_class->get_element(*origins_mode_name)!=0; // $ORIGINS mode
1.117 paf 223: }
224:
1.17 paf 225: public:
1.22 paf 226:
1.61 paf 227: /// info from web server
1.53 paf 228: Info& info;
1.81 paf 229: /// user's post data
230: char *post_data; size_t post_size;
1.53 paf 231:
1.134 paf 232: /// name of 'main' method
233: const String main_method_name;
234:
1.78 paf 235: /// operators are methods of this class
1.84 paf 236: Methoded& OP;
1.86 paf 237: /// $env:fields
1.57 paf 238: VEnv env;
1.108 paf 239: /// $status:fields
240: VStatus status;
1.86 paf 241: /// $form:elements
1.57 paf 242: VForm form;
1.90 parser 243: /// $math:constants
244: VMath math;
1.86 paf 245: /// $request:elements
1.57 paf 246: VRequest request;
1.86 paf 247: /// $response:elements
1.57 paf 248: VResponse response;
1.86 paf 249: /// $cookie:elements
1.60 paf 250: VCookie cookie;
1.70 paf 251:
1.123 paf 252: //@{ request processing status
253: /// execution stack
254: Stack stack;
1.61 paf 255: /// contexts
1.22 paf 256: Value *self, *root, *rcontext;
1.61 paf 257: /// contexts
1.22 paf 258: WContext *wcontext;
1.124 paf 259: /// exception stack trace
260: Stack exception_trace;
1.123 paf 261: //@}
1.85 paf 262:
1.86 paf 263: /// 'MAIN' class conglomerat
1.85 paf 264: VStateless_class *main_class;
1.76 paf 265:
1.87 paf 266: /// classes configured data
267: Hash classes_conf;
268:
1.7 paf 269: private: // core data
1.6 paf 270:
1.89 parser 271: /// classes
1.6 paf 272: Hash fclasses;
1.67 paf 273:
1.89 parser 274: /// already used files to avoid cyclic uses
1.67 paf 275: Hash used_files;
1.89 parser 276:
277: /** endless execute(execute(... preventing counter
278: @see ANTI_ENDLESS_EXECUTE_RECOURSION
279: */
280: uint anti_endless_execute_recoursion;
1.136 paf 281:
282: private:
283:
284: /// already executed some @conf method
285: bool configure_admin_done;
286:
287: void configure_admin(VStateless_class& conf_class, const String *source);
1.99 parser 288:
1.7 paf 289: private: // compile.C
290:
1.46 paf 291: VStateless_class& real_compile(COMPILE_PARAMS);
1.7 paf 292:
293: private: // execute.C
294:
1.137 ! paf 295: void execute_method(Value& aself, const Method& method,
! 296: const String **return_string);
1.116 paf 297: const String& execute_method(VMethodFrame& amethodFrame, const Method& method);
298: const String *execute_virtual_method(Value& aself, const String& method_name);
1.137 ! paf 299: void execute_nonvirtual_method(VStateless_class& aclass,
1.116 paf 300: const String& method_name,
1.137 ! paf 301: const String **return_string,
! 302: const Method **return_method=0);
1.9 paf 303:
1.132 paf 304: Value *get_element(const String *& remember_name, bool can_call_operator);
1.22 paf 305:
1.58 paf 306: private: // defaults
307:
1.111 paf 308: const uchar fdefault_lang;
1.68 paf 309: Value *default_content_type;
1.80 paf 310:
311: private: // mime types
312:
313: /// $MAIN:MIME-TYPES
314: Table *mime_types;
1.22 paf 315:
1.39 paf 316: private: // lang manipulation
1.22 paf 317:
1.111 paf 318: uchar set_lang(uchar alang) {
319: uchar result=flang;
1.39 paf 320: flang=alang;
321: return result;
322: }
1.111 paf 323: void restore_lang(uchar alang) {
1.39 paf 324: flang=alang;
325: }
326:
1.117 paf 327: private: // lang&raw
328:
329: uchar flang;
330:
331:
332: private: // connection manipulation
333:
334: SQL_Connection *set_connection(SQL_Connection *aconnection) {
335: SQL_Connection *result=fconnection;
336: fconnection=aconnection;
337: return result;
338: }
339: void restore_connection(SQL_Connection *aconnection) {
340: fconnection=aconnection;
341: }
342:
343: private:
344:
345: /// connection
346: SQL_Connection *fconnection;
1.126 paf 347:
1.75 paf 348: void output_result(const VFile& body_file, bool header_only);
1.39 paf 349: };
350:
1.61 paf 351: /// Auto-object used for temporary changing Request::flang.
1.39 paf 352: class Temp_lang {
353: Request& frequest;
1.111 paf 354: uchar saved_lang;
1.39 paf 355: public:
1.111 paf 356: Temp_lang(Request& arequest, uchar alang) :
1.39 paf 357: frequest(arequest),
358: saved_lang(arequest.set_lang(alang)) {
359: }
360: ~Temp_lang() {
361: frequest.restore_lang(saved_lang);
1.117 paf 362: }
363: };
364:
365: /// Auto-object used for temporary changing Request::fconnection.
366: class Temp_connection {
367: Request& frequest;
368: SQL_Connection *saved_connection;
369: public:
370: Temp_connection(Request& arequest, SQL_Connection *aconnection) :
371: frequest(arequest),
372: saved_connection(arequest.set_connection(aconnection)) {
373: }
374: ~Temp_connection() {
375: frequest.restore_connection(saved_connection);
1.39 paf 376: }
1.91 parser 377: };
378:
379: /**
380: @b method parameters passed in this array.
381: contains handy typecast ad junction/not junction ensurers
382:
383: */
384: class MethodParams : public Array {
385: public:
386: MethodParams(Pool& pool, const String& amethod_name) : Array(pool),
387: fmethod_name(amethod_name) {
388: }
389:
390: /// handy typecast. I long for templates
391: Value& get(int index) {
392: return *static_cast<Value *>(Array::get(index));
393: }
394: /// handy is-value-a-junction ensurer
395: Value& as_junction(int index, const char *msg) {
396: return get_as(index, true, msg);
397: }
398: /// handy value-is-not-a-junction ensurer
399: Value& as_no_junction(int index, const char *msg) {
400: return get_as(index, false, msg);
401: }
402: /// handy expression auto-processing to double
1.102 parser 403: double as_double(int index, const char *msg, Request& r) {
404: return get_processed(index, msg, r).as_double();
1.91 parser 405: }
406: /// handy expression auto-processing to int
1.102 parser 407: int as_int(int index, const char *msg, Request& r) {
408: return get_processed(index, msg, r).as_int();
1.103 parser 409: }
410: /// handy expression auto-processing to bool
411: bool as_bool(int index, const char *msg, Request& r) {
412: return get_processed(index, msg, r).as_bool();
1.91 parser 413: }
414: /// handy string ensurer
415: const String& as_string(int index, const char *msg) {
416: return as_no_junction(index, msg).as_string();
417: }
418:
419: private:
420:
421: /// handy value-is/not-a-junction ensurer
422: Value& get_as(int index, bool as_junction, const char *msg) {
423: Value& result=get(index);
424: if((result.get_junction()!=0) ^ as_junction)
1.125 paf 425: throw Exception("parser.runtime",
1.91 parser 426: &fmethod_name,
427: "%s (parameter #%d)", msg, 1+index);
1.104 parser 428:
1.91 parser 429: return result;
430: }
431:
1.102 parser 432: Value& get_processed(int index, const char *msg, Request& r) {
1.126 paf 433: return r.process_to_value(as_junction(index, msg), 0/*no name*/);
1.91 parser 434: }
435:
436: private:
437:
438: const String& fmethod_name;
439:
1.4 paf 440: };
1.1 paf 441:
442: #endif
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