Annotation of parser3/src/include/pa_request.h, revision 1.126
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:
1.126 ! paf 7: $Id: pa_request.h,v 1.125 2002/03/27 15:30:35 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:
1.7 paf 33: #ifndef NO_STRING_ORIGIN
1.40 paf 34: # define COMPILE_PARAMS \
35: const char *source, \
1.46 paf 36: VStateless_class *aclass, const String *name, \
37: VStateless_class *base_class, \
1.40 paf 38: const char *file
39: # define COMPILE(source, aclass, name, base_class, file) \
40: real_compile(source, aclass, name, base_class, file)
1.7 paf 41: #else
1.40 paf 42: # define COMPILE_PARAMS \
43: const char *source, \
1.46 paf 44: VStateless_class *aclass, const String *name, \
45: VStateless_class *base_class
1.40 paf 46: # define COMPILE(source, aclass, name, base_class, file) \
47: real_compile(source, aclass, name, base_class)
1.7 paf 48: #endif
1.4 paf 49:
1.39 paf 50: class Temp_lang;
1.84 paf 51: class Methoded;
1.116 paf 52: class VMethodFrame;
1.1 paf 53:
1.61 paf 54: /// Main workhorse.
1.7 paf 55: class Request : public Pooled {
1.107 paf 56: friend class Temp_lang;
1.117 paf 57: friend class Temp_connection;
1.1 paf 58: public:
1.112 paf 59:
60: #ifdef RESOURCES_DEBUG
61: /// measures
62: double sql_connect_time;
63: double sql_request_time;
64: #endif
1.61 paf 65:
66: /// some information from web server
1.65 paf 67: class Info {
68: public:
1.53 paf 69: const char *document_root;
70: const char *path_translated;
1.56 paf 71: const char *method;
1.53 paf 72: const char *query_string;
1.56 paf 73: const char *uri;
1.53 paf 74: const char *content_type;
75: size_t content_length;
1.60 paf 76: const char *cookie;
1.71 paf 77: const char *user_agent;
1.53 paf 78: };
79:
1.50 paf 80: Request(Pool& apool,
1.53 paf 81: Info& ainfo,
1.111 paf 82: uchar adefault_lang, ///< all tainted data default untainting lang
1.110 paf 83: bool status_allowed ///< status class allowed
1.50 paf 84: );
1.118 paf 85: ~Request();
1.1 paf 86:
1.61 paf 87: /// global classes
1.6 paf 88: Hash& classes() { return fclasses; }
89:
1.65 paf 90: /**
91: core request processing
92:
93: BEWARE: may throw exception to you: catch it!
94: */
95: void core(
1.95 parser 96: const char *root_config_filespec, ///< system config filespec
97: bool root_config_fail_on_read_problem, ///< fail if system config file not found
98: const char *site_config_filespec, ///< site config filespec
99: bool site_config_fail_on_read_problem, ///< fail if site config file not found
1.65 paf 100: bool header_only);
1.17 paf 101:
1.61 paf 102: /// executes ops
1.89 parser 103: void execute(const Array& ops); // execute.C
1.40 paf 104:
1.64 paf 105: /// compiles the file, maybe forcing it's class @a name and @a base_class.
1.46 paf 106: VStateless_class *use_file(
1.94 parser 107: const String& file_name,
108: bool ignore_class_path=false, bool fail_on_read_problem=true,
1.45 paf 109: const String *name=0,
1.46 paf 110: VStateless_class *base_class=0); // core.C
1.64 paf 111: /// compiles a @a source buffer
1.46 paf 112: VStateless_class *use_buf(
1.40 paf 113: const char *source, const char *file,
1.46 paf 114: VStateless_class *aclass=0, const String *name=0,
115: VStateless_class *base_class=0); // core.C
1.28 paf 116:
1.126 ! paf 117: //@{ convinient inline helpers @see Request::process
! 118: const String& process_to_string(Value& input_value,
! 119: const String *result_name=0) {
! 120: const String *result;
! 121: process_internal(input_value, result_name, true/*intercept_string*/, &result, 0);
! 122: return *result;
! 123: }
! 124: Value& process_to_value(Value& input_value,
! 125: const String *result_name=0,
! 126: bool intercept_string=true) {
! 127: Value *result;
! 128: process_internal(input_value, result_name, intercept_string, 0, &result);
! 129: return *result;
! 130: }
! 131: //@}
! 132:
1.61 paf 133: /// appending, sure of clean string inside
1.65 paf 134: void write_no_lang(const String& astring) {
1.111 paf 135: wcontext->write(astring,
136: String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT);
1.49 paf 137: }
1.61 paf 138: /// appending string, passing language built into string being written
1.65 paf 139: void write_pass_lang(const String& astring) {
140: wcontext->write(astring, String::UL_PASS_APPENDED);
1.59 paf 141: }
1.61 paf 142: /// appending possible string, assigning untaint language
1.40 paf 143: void write_assign_lang(Value& avalue) {
1.39 paf 144: wcontext->write(avalue, flang);
1.106 parser 145: }
146: /// appending string, assigning untaint language
147: void write_assign_lang(const String& astring) {
148: wcontext->write(astring, flang);
1.22 paf 149: }
1.61 paf 150: /// appending possible string, passing language built into string being written
1.40 paf 151: void write_pass_lang(Value& avalue) {
1.65 paf 152: wcontext->write(avalue, String::UL_PASS_APPENDED);
1.49 paf 153: }
1.61 paf 154: /// appending sure value, that would be converted to clean string
1.49 paf 155: void write_no_lang(Value& avalue) {
1.122 paf 156: if(wcontext->get_in_expression())
157: wcontext->write(avalue);
158: else
159: wcontext->write(avalue,
160: String::UL_CLEAN | flang&String::UL_OPTIMIZE_BIT);
1.55 paf 161: }
1.61 paf 162: /// appending sure value, not VString
1.55 paf 163: void write_expr_result(Value& avalue) {
164: wcontext->write(avalue);
1.40 paf 165: }
1.22 paf 166:
1.64 paf 167: /// returns relative to @a path path to @a file
1.69 paf 168: const String& relative(const char *apath, const String& relative_name);
1.61 paf 169:
1.64 paf 170: /// returns an absolute @a path to relative @a name
1.69 paf 171: const String& absolute(const String& relative_name);
1.42 paf 172:
1.80 paf 173: /// returns the mime type of 'user_file_name_cstr'
174: const String& mime_type_of(const char *user_file_name_cstr);
175:
1.117 paf 176: /// returns current SQL connection if any
177: SQL_Connection *connection(const String *source) {
178: if(!fconnection && source)
1.125 paf 179: throw Exception("parser.runtime",
1.117 paf 180: source,
181: "outside of 'connect' operator");
182:
183: return fconnection;
184: }
185:
1.17 paf 186: public:
1.22 paf 187:
1.61 paf 188: /// info from web server
1.53 paf 189: Info& info;
1.81 paf 190: /// user's post data
191: char *post_data; size_t post_size;
1.53 paf 192:
1.78 paf 193: /// operators are methods of this class
1.84 paf 194: Methoded& OP;
1.86 paf 195: /// $env:fields
1.57 paf 196: VEnv env;
1.108 paf 197: /// $status:fields
198: VStatus status;
1.86 paf 199: /// $form:elements
1.57 paf 200: VForm form;
1.90 parser 201: /// $math:constants
202: VMath math;
1.86 paf 203: /// $request:elements
1.57 paf 204: VRequest request;
1.86 paf 205: /// $response:elements
1.57 paf 206: VResponse response;
1.86 paf 207: /// $cookie:elements
1.60 paf 208: VCookie cookie;
1.70 paf 209:
1.123 paf 210: //@{ request processing status
211: /// execution stack
212: Stack stack;
1.61 paf 213: /// contexts
1.22 paf 214: Value *self, *root, *rcontext;
1.61 paf 215: /// contexts
1.22 paf 216: WContext *wcontext;
1.124 paf 217: /// exception stack trace
218: Stack exception_trace;
1.123 paf 219: //@}
1.85 paf 220:
1.86 paf 221: /// 'MAIN' class conglomerat
1.85 paf 222: VStateless_class *main_class;
1.76 paf 223:
1.87 paf 224: /// classes configured data
225: Hash classes_conf;
226:
1.7 paf 227: private: // core data
1.6 paf 228:
1.89 parser 229: /// classes
1.6 paf 230: Hash fclasses;
1.67 paf 231:
1.89 parser 232: /// already used files to avoid cyclic uses
1.67 paf 233: Hash used_files;
1.89 parser 234:
235: /** endless execute(execute(... preventing counter
236: @see ANTI_ENDLESS_EXECUTE_RECOURSION
237: */
238: uint anti_endless_execute_recoursion;
1.99 parser 239:
1.7 paf 240: private: // compile.C
241:
1.46 paf 242: VStateless_class& real_compile(COMPILE_PARAMS);
1.7 paf 243:
244: private: // execute.C
245:
1.116 paf 246: const String *execute_method(Value& aself, const Method& method,
247: bool return_cstr);
248: const String& execute_method(VMethodFrame& amethodFrame, const Method& method);
249: const String *execute_virtual_method(Value& aself, const String& method_name);
1.93 parser 250: const String *execute_nonvirtual_method(VStateless_class& aclass,
1.116 paf 251: const String& method_name,
252: bool return_cstr);
1.9 paf 253:
1.119 paf 254: Value *get_element(bool can_call_operator);
1.22 paf 255:
1.58 paf 256: private: // defaults
257:
1.111 paf 258: const uchar fdefault_lang;
1.68 paf 259: Value *default_content_type;
1.80 paf 260:
261: private: // mime types
262:
263: /// $MAIN:MIME-TYPES
264: Table *mime_types;
1.22 paf 265:
1.39 paf 266: private: // lang manipulation
1.22 paf 267:
1.111 paf 268: uchar set_lang(uchar alang) {
269: uchar result=flang;
1.39 paf 270: flang=alang;
271: return result;
272: }
1.111 paf 273: void restore_lang(uchar alang) {
1.39 paf 274: flang=alang;
275: }
276:
1.117 paf 277: private: // lang&raw
278:
279: uchar flang;
280:
281:
282: private: // connection manipulation
283:
284: SQL_Connection *set_connection(SQL_Connection *aconnection) {
285: SQL_Connection *result=fconnection;
286: fconnection=aconnection;
287: return result;
288: }
289: void restore_connection(SQL_Connection *aconnection) {
290: fconnection=aconnection;
291: }
292:
293: private:
294:
295: /// connection
296: SQL_Connection *fconnection;
297:
298:
1.59 paf 299: private:
300:
1.126 ! paf 301: /// processes any code-junction there may be inside of @a value
! 302: void process_internal(
! 303: Value& input_value, const String *result_name,
! 304: bool intercept_string,
! 305: const String **string_result, Value **value_result); // execute.C
! 306:
1.75 paf 307: void output_result(const VFile& body_file, bool header_only);
1.39 paf 308: };
309:
1.61 paf 310: /// Auto-object used for temporary changing Request::flang.
1.39 paf 311: class Temp_lang {
312: Request& frequest;
1.111 paf 313: uchar saved_lang;
1.39 paf 314: public:
1.111 paf 315: Temp_lang(Request& arequest, uchar alang) :
1.39 paf 316: frequest(arequest),
317: saved_lang(arequest.set_lang(alang)) {
318: }
319: ~Temp_lang() {
320: frequest.restore_lang(saved_lang);
1.117 paf 321: }
322: };
323:
324: /// Auto-object used for temporary changing Request::fconnection.
325: class Temp_connection {
326: Request& frequest;
327: SQL_Connection *saved_connection;
328: public:
329: Temp_connection(Request& arequest, SQL_Connection *aconnection) :
330: frequest(arequest),
331: saved_connection(arequest.set_connection(aconnection)) {
332: }
333: ~Temp_connection() {
334: frequest.restore_connection(saved_connection);
1.39 paf 335: }
1.91 parser 336: };
337:
338: /**
339: @b method parameters passed in this array.
340: contains handy typecast ad junction/not junction ensurers
341:
342: */
343: class MethodParams : public Array {
344: public:
345: MethodParams(Pool& pool, const String& amethod_name) : Array(pool),
346: fmethod_name(amethod_name) {
347: }
348:
349: /// handy typecast. I long for templates
350: Value& get(int index) {
351: return *static_cast<Value *>(Array::get(index));
352: }
353: /// handy is-value-a-junction ensurer
354: Value& as_junction(int index, const char *msg) {
355: return get_as(index, true, msg);
356: }
357: /// handy value-is-not-a-junction ensurer
358: Value& as_no_junction(int index, const char *msg) {
359: return get_as(index, false, msg);
360: }
361: /// handy expression auto-processing to double
1.102 parser 362: double as_double(int index, const char *msg, Request& r) {
363: return get_processed(index, msg, r).as_double();
1.91 parser 364: }
365: /// handy expression auto-processing to int
1.102 parser 366: int as_int(int index, const char *msg, Request& r) {
367: return get_processed(index, msg, r).as_int();
1.103 parser 368: }
369: /// handy expression auto-processing to bool
370: bool as_bool(int index, const char *msg, Request& r) {
371: return get_processed(index, msg, r).as_bool();
1.91 parser 372: }
373: /// handy string ensurer
374: const String& as_string(int index, const char *msg) {
375: return as_no_junction(index, msg).as_string();
376: }
377:
378: private:
379:
380: /// handy value-is/not-a-junction ensurer
381: Value& get_as(int index, bool as_junction, const char *msg) {
382: Value& result=get(index);
383: if((result.get_junction()!=0) ^ as_junction)
1.125 paf 384: throw Exception("parser.runtime",
1.91 parser 385: &fmethod_name,
386: "%s (parameter #%d)", msg, 1+index);
1.104 parser 387:
1.91 parser 388: return result;
389: }
390:
1.102 parser 391: Value& get_processed(int index, const char *msg, Request& r) {
1.126 ! paf 392: return r.process_to_value(as_junction(index, msg), 0/*no name*/);
1.91 parser 393: }
394:
395: private:
396:
397: const String& fmethod_name;
398:
1.4 paf 399: };
1.1 paf 400:
401: #endif
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