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1.1 paf 1: /*
1.9 paf 2: Parser
3: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.14 paf 4: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.9 paf 5:
1.48 ! paf 6: $Id: pa_request.C,v 1.47 2001/03/18 17:18:36 paf Exp $
1.1 paf 7: */
8:
1.19 paf 9: #include <string.h>
10:
1.1 paf 11: #include "pa_request.h"
1.3 paf 12: #include "pa_wwrapper.h"
13: #include "pa_common.h"
14: #include "pa_vclass.h"
1.11 paf 15: #include "_root.h"
16: #include "_env.h"
1.17 paf 17: #include "_table.h"
1.31 paf 18: #include "pa_globals.h"
1.30 paf 19: #include "pa_vint.h"
20: #include "pa_vmframe.h"
1.32 paf 21: #include "pa_types.h"
1.3 paf 22:
1.28 paf 23: Request::Request(Pool& apool,
1.33 paf 24: Info& ainfo,
1.43 paf 25: String::Untaint_lang adefault_lang) : Pooled(apool),
1.3 paf 26: stack(apool),
1.41 paf 27: ROOT(apool),
28: env(apool),
29: form(apool),
30: request(apool, *this),
31: response(apool),
1.3 paf 32: fclasses(apool),
1.43 paf 33: fdefault_lang(adefault_lang), flang(adefault_lang),
34: info(ainfo),
35: fdefault_content_type(0)
1.3 paf 36: {
1.27 paf 37: // root superclass,
1.3 paf 38: // parent of all classes,
39: // operators holder
1.41 paf 40: initialize_root_class(pool(), ROOT);
41: classes().put(*root_class_name, &ROOT);
1.27 paf 42: // table class
43: classes().put(*table_class_name, table_class);
44: // table_class->set_name(*table_class_name);
1.3 paf 45:
46: // env class
1.41 paf 47: classes().put(*env_class_name, &env);
1.27 paf 48: // form class
1.41 paf 49: classes().put(*form_class_name, &form);
1.40 paf 50: // request class
1.41 paf 51: classes().put(*request_class_name, &request);
52: // response class
53: classes().put(*response_class_name, &response);
1.3 paf 54: }
1.1 paf 55:
1.47 paf 56: static void append_attribute_subattribute(const Hash::Key& akey, Hash::Value *avalue,
57: void *info) {
58: if(akey==VALUE_NAME)
59: return;
60:
61: // ...; charset=windows1251
62: String *string=static_cast<String *>(info);
63: string->APPEND_CONST("; ");
64:
65: string->append(akey, String::Untaint_lang::URI, true);
66:
67: string->APPEND_CONST("=");
68:
69: Value *value=static_cast<Value *>(avalue);
70: string->append(value->as_string(), String::Untaint_lang::URI, true);
71: }
1.48 ! paf 72: static void output_response_attribute(const Hash::Key& aattribute, Hash::Value *ameaning,
1.47 paf 73: void *info) {
1.48 ! paf 74: String *attribute_to_exclude=static_cast<String *>(info);
! 75: if(aattribute==*attribute_to_exclude)
1.45 paf 76: return;
77:
1.48 ! paf 78: String attribute(aattribute.pool());
! 79: attribute.append(aattribute, String::Untaint_lang::URI, true);
1.45 paf 80:
1.47 paf 81: Value *meaning=static_cast<Value *>(ameaning);
82: String string(meaning->pool());
83: if(VHash *vhash=meaning->get_hash()) {
84: // $value(value) $subattribute(subattribute value)
85: Hash& hash=vhash->hash();
86:
87: Value *value=static_cast<Value *>(hash.get(*value_name));
88: if(value)
89: string.append(value->as_string(), String::Untaint_lang::URI, true);
90:
91: hash.foreach(append_attribute_subattribute, &string);
92: } else // string value
93: string.append(meaning->as_string(), String::Untaint_lang::URI, true);
1.45 paf 94:
95: (*service_funcs.output_header_attribute)(
1.48 ! paf 96: attribute.cstr(),
1.47 paf 97: string.cstr());
1.45 paf 98: }
99:
1.41 paf 100: void Request::core(Exception& system_exception,
101: const char *sys_auto_path1,
102: const char *sys_auto_path2) {
1.29 paf 103: VStateless_class *main_class=0;
1.41 paf 104: bool need_rethrow=false; Exception rethrow_me;
1.3 paf 105: TRY {
1.29 paf 106: char *auto_filespec=(char *)malloc(MAX_STRING);
107:
108: // load MAIN class,
109: // it consists of all the auto.p files we'd manage to find
110: // plus
111: // the file user requested us to process
112: // all located classes become children of one another,
113: // composing class we name 'MAIN'
114:
115: // loading system auto.p 1
116: if(sys_auto_path1) {
1.30 paf 117: strncpy(auto_filespec, sys_auto_path1, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 118: strcat(auto_filespec, AUTO_FILE_NAME);
119: main_class=use_file(
120: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 121: main_class_name, main_class);
1.29 paf 122: }
123:
124: // loading system auto.p 2
125: if(sys_auto_path2) {
1.30 paf 126: strncpy(auto_filespec, sys_auto_path2, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 127: strcat(auto_filespec, AUTO_FILE_NAME);
1.37 paf 128: main_class=use_file(
1.29 paf 129: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 130: main_class_name, main_class);
1.29 paf 131: }
1.8 paf 132:
1.42 paf 133: Value *element;
1.34 paf 134: // $MAIN:limits hash used here,
135: // until someone with less privileges have overriden them
136: Value *limits=main_class?main_class->get_element(*limits_name):0;
1.35 paf 137: // $limits.post_max_size default 10M
1.34 paf 138: element=limits?limits->get_element(*post_max_size_name):0;
1.36 paf 139: int value=element?(size_t)element->get_double():0;
140: int post_max_size=value?value:10*0x400*400;
1.34 paf 141:
1.41 paf 142: form.fill_fields(*this, post_max_size);
1.7 paf 143:
144: // TODO: load site auto.p files, all assigned bases from upper dir
1.39 paf 145: /*char *site_auto_file="Y:\\parser3\\src\\auto.p";
1.16 paf 146: main_class=use_file(
1.39 paf 147: site_auto_file, false/*ignore possible read problem* /,
148: main_class_name, main_class);*/
1.7 paf 149:
1.42 paf 150: // $MAIN:defaults
151: Value *defaults=main_class?main_class->get_element(*defaults_name):0;
152: // $defaults.content-type
1.47 paf 153: if(fdefault_content_type=defaults?defaults->get_element(*content_type_name):0)
154: response.fields().put(*content_type_name, fdefault_content_type);
1.42 paf 155:
1.7 paf 156: // there must be some auto.p
1.12 paf 157: if(!main_class)
1.7 paf 158: THROW(0,0,
159: 0,
1.24 paf 160: "no 'auto.p' found (nither system nor any site's)");
1.5 paf 161:
1.7 paf 162: // compiling requested file
1.35 paf 163: main_class=use_file(info.path_translated, true/*don't ignore read problem*/,
1.25 paf 164: main_class_name, main_class);
165:
166: // execute @main[]
1.41 paf 167: const String *body_string=execute_method(*main_class, *main_method_name);
168: if(!body_string)
1.25 paf 169: THROW(0,0,
170: 0,
171: "'"MAIN_METHOD_NAME"' method not found");
1.41 paf 172:
1.45 paf 173: // extract response body
174: Value *body_value=static_cast<Value *>(
175: response.fields().get(*body_name));
176: if(body_value) // there is some $request.body
177: body_string=&body_value->as_string();// TODO: IMAGE&FILE
178:
179: // OK. write out the result
180: output_result(*body_string);
1.3 paf 181: }
182: CATCH(e) {
1.30 paf 183: TRY {
184: // we're returning not result, but error explanation
1.43 paf 185:
186: // reset language to default
187: flang=fdefault_lang;
188:
189: // reset response
190: response.fields().clear();
191:
192: // this is what we'd return in $response:content-type
193: Value *content_type;
194:
195: // this is what we'd return in $response:body
1.41 paf 196: const String *body_string=0;
1.43 paf 197:
1.30 paf 198: if(main_class) { // we've managed to end up with some main_class
199: // maybe we'd be lucky enough as to report an error
200: // in a gracefull way...
201: if(Value *value=main_class->get_element(*exception_method_name))
202: if(Junction *junction=value->get_junction())
203: if(const Method *method=junction->method) {
204: // preparing to pass parameters to
205: // @exception[origin;source;comment;type;code]
1.38 paf 206: VMethodFrame frame(pool(), *junction);
207: frame.set_self(*main_class);
1.30 paf 208:
209: const String *problem_source=e.problem_source();
210: // origin
1.44 paf 211: String origin_name(pool(), "origin");
1.38 paf 212: Value *origin_value=0;
1.30 paf 213: #ifndef NO_STRING_ORIGIN
1.38 paf 214: if(problem_source) {
215: const Origin& origin=problem_source->origin();
216: if(origin.file) {
217: char *buf=(char *)malloc(MAX_STRING);
1.42 paf 218: snprintf(buf, MAX_STRING, "%s(%d):",
1.38 paf 219: origin.file, 1+origin.line);
1.44 paf 220: String *origin_file_line=NEW String(pool(),
221: buf, true);
1.38 paf 222: origin_value=NEW VString(*origin_file_line);
223: }
1.30 paf 224: }
225: #endif
1.38 paf 226: frame.store_param(origin_name,
227: origin_value?origin_value:NEW VUnknown(pool()));
1.28 paf 228:
1.30 paf 229: // source
1.44 paf 230: String source_name(pool(), "source");
1.38 paf 231: Value *source_value=0;
1.43 paf 232: if(problem_source) {
1.47 paf 233: String& problem_source_copy=*NEW String(pool());
234: problem_source_copy.append(*problem_source,
235: flang, true);
1.43 paf 236: source_value=NEW VString(problem_source_copy);
237: }
1.38 paf 238: frame.store_param(source_name,
239: source_value?source_value:NEW VUnknown(pool()));
1.30 paf 240:
241: // comment
1.44 paf 242: String comment_name(pool(), "comment");
243: String *comment_value=NEW String(pool(),
244: e.comment(), true);
1.38 paf 245: frame.store_param(comment_name,
1.30 paf 246: NEW VString(*comment_value));
247:
248: // type
1.44 paf 249: String type_name(pool(), "type");
1.30 paf 250: Value *type_value;
1.43 paf 251: if(e.type()) {
1.47 paf 252: String& type_copy=*NEW String(pool());
253: type_value=NEW VString(type_copy.append(*e.type(),
254: flang, true));
1.43 paf 255: } else
1.30 paf 256: type_value=NEW VUnknown(pool());
1.38 paf 257: frame.store_param(type_name, type_value);
1.30 paf 258:
259: // code
1.44 paf 260: String code_name(pool(), "code");
1.30 paf 261: Value *code_value;
1.43 paf 262: if(e.code()) {
1.47 paf 263: String& code_copy=*NEW String(pool());
264: code_value=NEW VString(code_copy.append(*e.code(),
265: flang, true));
1.43 paf 266: } else
1.30 paf 267: code_value=NEW VUnknown(pool());
1.38 paf 268: frame.store_param(code_name, code_value);
1.30 paf 269:
1.43 paf 270: // future $response:content-type=
271: // content-type from any auto.p
272: content_type=fdefault_content_type;
273: // future $response:body=
274: // execute ^exception[origin;source;comment;type;code]
275: body_string=execute_method(frame, *method);
1.30 paf 276: }
277: }
278:
1.41 paf 279: if(!body_string) { // couldn't report an error beautifully?
280: // doing that ugly
281:
282: // make up result: $origin $source $comment $type $code
283: char *buf=(char *)malloc(MAX_STRING);
1.30 paf 284: size_t printed=0;
285: const String *problem_source=e.problem_source();
286: if(problem_source) {
1.16 paf 287: #ifndef NO_STRING_ORIGIN
1.30 paf 288: const Origin& origin=problem_source->origin();
289: if(origin.file)
1.41 paf 290: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ",
1.30 paf 291: origin.file, 1+origin.line);
1.28 paf 292: #endif
1.41 paf 293: printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ",
1.30 paf 294: problem_source->cstr());
295: }
1.41 paf 296: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s",
1.30 paf 297: e.comment());
298: const String *type=e.type();
299: if(type) {
1.41 paf 300: printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s",
1.30 paf 301: type->cstr());
302: const String *code=e.code();
303: if(code)
1.41 paf 304: printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s",
1.30 paf 305: code->cstr());
306: }
1.43 paf 307:
308: // future $response:content-type
1.44 paf 309: String &content_type_value=*NEW String(pool(), "text/plain");
1.43 paf 310: content_type=NEW VString(content_type_value);
311: // future $response:body
1.44 paf 312: body_string=NEW String(pool(), buf);
1.30 paf 313: }
1.41 paf 314:
1.45 paf 315: // set $response:content-type
1.47 paf 316: if(content_type)
317: response.fields().put(*content_type_name, content_type);
1.45 paf 318:
319: // ERROR. write it out
320: output_result(*body_string);
1.3 paf 321: }
1.30 paf 322: CATCH(e) {
1.41 paf 323: // exception in request exception handler
324: // remember to rethrow it
325: rethrow_me=e; need_rethrow=true;
1.1 paf 326: }
1.30 paf 327: END_CATCH
1.1 paf 328: }
1.41 paf 329: END_CATCH // do not use pool() after this point - no exception handler set
330: // any throw() would try to use zero exception() pointer
331:
332: if(need_rethrow) // there were an exception set for us to rethrow?
333: system_exception._throw(rethrow_me.type(), rethrow_me.code(),
334: rethrow_me.problem_source(),
335: rethrow_me.comment());
1.28 paf 336:
1.1 paf 337: }
338:
1.26 paf 339: VStateless_class *Request::use_file(
340: const char *file, bool fail_on_read_problem,
341: const String *name,
342: VStateless_class *base_class) {
1.3 paf 343: // TODO: обнаружить|решить cyclic dependences
1.5 paf 344: char *source=file_read(pool(), file, fail_on_read_problem);
1.3 paf 345: if(!source)
1.12 paf 346: return base_class;
1.3 paf 347:
1.25 paf 348: return use_buf(source, file, 0/*new class*/, name, base_class);
1.16 paf 349: }
350:
1.26 paf 351: VStateless_class *Request::use_buf(
352: const char *source, const char *file,
353: VStateless_class *aclass, const String *name,
354: VStateless_class *base_class) {
1.5 paf 355: // compile loaded class
1.26 paf 356: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 357:
1.4 paf 358: // locate and execute possible @auto[] static method
1.25 paf 359: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 360: return &cclass;
1.20 paf 361: }
362:
363: void Request::fail_if_junction_(bool is,
1.26 paf 364: Value& value, const String& method_name, char *msg) {
1.20 paf 365:
366: // fail_if_junction(true, junction = fail
367: // fail_if_junction(false, not junction = fail
368: if((value.get_junction()!=0) ^ !is)
369: THROW(0, 0,
370: &method_name,
371: msg);
1.19 paf 372: }
373:
374: char *Request::relative(const char *path, const char *file) {
1.21 paf 375: char *result=(char *)malloc(strlen(path)+strlen(file)+1);
1.19 paf 376: strcpy(result, path);
1.32 paf 377: rsplit(result, PATH_DELIMITER_CHAR);
378: strcat(result, PATH_DELIMITER_STRING);
1.19 paf 379: strcat(result, file);
380: return result;
381: }
382:
383: char *Request::absolute(const char *name) {
384: if(name[0]=='/') {
1.35 paf 385: char *result=(char *)malloc(strlen(info.document_root)+strlen(name)+1);
386: strcpy(result, info.document_root);
1.19 paf 387: strcat(result, name);
388: return result;
389: } else
1.40 paf 390: return relative(info.uri, name);
1.1 paf 391: }
1.45 paf 392:
393: void Request::output_result(const String& body_string) {
394: // header: response fields
395: response.fields().foreach(output_response_attribute, /*excluding*/ body_name);
396: const char *body=body_string.cstr();
397: if(size_t content_length=strlen(body)) {
398: // header: content-length
399: char content_length_cstr[MAX_NUMBER];
400: snprintf(content_length_cstr, MAX_NUMBER, "%d", content_length);
401: (*service_funcs.output_header_attribute)("content-length",
402: content_length_cstr);
403: // body
404: (*service_funcs.output_body)(body, content_length);
405: }
406: }