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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:
1.43 ! paf 6: $Id: pa_request.C,v 1.42 2001/03/18 11:58:20 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:
1.41 paf 56: void Request::core(Exception& system_exception,
57: const char *sys_auto_path1,
58: const char *sys_auto_path2) {
1.29 paf 59: VStateless_class *main_class=0;
1.41 paf 60: bool need_rethrow=false; Exception rethrow_me;
1.3 paf 61: TRY {
1.29 paf 62: char *auto_filespec=(char *)malloc(MAX_STRING);
63:
64: // load MAIN class,
65: // it consists of all the auto.p files we'd manage to find
66: // plus
67: // the file user requested us to process
68: // all located classes become children of one another,
69: // composing class we name 'MAIN'
70:
71: // loading system auto.p 1
72: if(sys_auto_path1) {
1.30 paf 73: strncpy(auto_filespec, sys_auto_path1, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 74: strcat(auto_filespec, AUTO_FILE_NAME);
75: main_class=use_file(
76: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 77: main_class_name, main_class);
1.29 paf 78: }
79:
80: // loading system auto.p 2
81: if(sys_auto_path2) {
1.30 paf 82: strncpy(auto_filespec, sys_auto_path2, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 83: strcat(auto_filespec, AUTO_FILE_NAME);
1.37 paf 84: main_class=use_file(
1.29 paf 85: auto_filespec, false/*ignore possible read problem*/,
1.37 paf 86: main_class_name, main_class);
1.29 paf 87: }
1.8 paf 88:
1.42 paf 89: Value *element;
1.34 paf 90: // $MAIN:limits hash used here,
91: // until someone with less privileges have overriden them
92: Value *limits=main_class?main_class->get_element(*limits_name):0;
1.35 paf 93: // $limits.post_max_size default 10M
1.34 paf 94: element=limits?limits->get_element(*post_max_size_name):0;
1.36 paf 95: int value=element?(size_t)element->get_double():0;
96: int post_max_size=value?value:10*0x400*400;
1.34 paf 97:
1.41 paf 98: form.fill_fields(*this, post_max_size);
1.7 paf 99:
100: // TODO: load site auto.p files, all assigned bases from upper dir
1.39 paf 101: /*char *site_auto_file="Y:\\parser3\\src\\auto.p";
1.16 paf 102: main_class=use_file(
1.39 paf 103: site_auto_file, false/*ignore possible read problem* /,
104: main_class_name, main_class);*/
1.7 paf 105:
1.42 paf 106: // $MAIN:defaults
107: Value *defaults=main_class?main_class->get_element(*defaults_name):0;
108: // $defaults.content-type
109: element=defaults?defaults->get_element(*content_type_name):0;
1.43 ! paf 110: response.fields().put(*content_type_name, fdefault_content_type=element);
1.42 paf 111:
1.7 paf 112: // there must be some auto.p
1.12 paf 113: if(!main_class)
1.7 paf 114: THROW(0,0,
115: 0,
1.24 paf 116: "no 'auto.p' found (nither system nor any site's)");
1.5 paf 117:
1.7 paf 118: // compiling requested file
1.35 paf 119: main_class=use_file(info.path_translated, true/*don't ignore read problem*/,
1.25 paf 120: main_class_name, main_class);
121:
122: // execute @main[]
1.41 paf 123: const String *body_string=execute_method(*main_class, *main_method_name);
124: if(!body_string)
1.25 paf 125: THROW(0,0,
126: 0,
127: "'"MAIN_METHOD_NAME"' method not found");
1.41 paf 128:
129: // store 'body' unless response already have one
130: response.fields().put_dont_replace(*body_name, NEW VString(*body_string));
1.3 paf 131: }
132: CATCH(e) {
1.30 paf 133: TRY {
134: // we're returning not result, but error explanation
1.43 ! paf 135:
! 136: // reset language to default
! 137: flang=fdefault_lang;
! 138:
! 139: // reset response
! 140: response.fields().clear();
! 141:
! 142: // this is what we'd return in $response:content-type
! 143: Value *content_type;
! 144:
! 145: // this is what we'd return in $response:body
1.41 paf 146: const String *body_string=0;
1.43 ! paf 147:
! 148: #define NEW_TAINTED(name, value) \
! 149: name=NEW String(pool()); name->APPEND_TAINTED(value,0,0,0)
! 150: #define LOCAL_CONST(name, value) \
! 151: String name(pool()); name.APPEND_CONST(value)
! 152:
1.30 paf 153: if(main_class) { // we've managed to end up with some main_class
154: // maybe we'd be lucky enough as to report an error
155: // in a gracefull way...
156: if(Value *value=main_class->get_element(*exception_method_name))
157: if(Junction *junction=value->get_junction())
158: if(const Method *method=junction->method) {
159: // preparing to pass parameters to
160: // @exception[origin;source;comment;type;code]
1.38 paf 161: VMethodFrame frame(pool(), *junction);
162: frame.set_self(*main_class);
1.30 paf 163:
164: const String *problem_source=e.problem_source();
165: // origin
1.43 ! paf 166: LOCAL_CONST(origin_name, "origin");
1.38 paf 167: Value *origin_value=0;
1.30 paf 168: #ifndef NO_STRING_ORIGIN
1.38 paf 169: if(problem_source) {
170: const Origin& origin=problem_source->origin();
171: if(origin.file) {
172: char *buf=(char *)malloc(MAX_STRING);
1.42 paf 173: snprintf(buf, MAX_STRING, "%s(%d):",
1.38 paf 174: origin.file, 1+origin.line);
1.43 ! paf 175: String *NEW_TAINTED(origin_file_line, buf);
1.38 paf 176: origin_value=NEW VString(*origin_file_line);
177: }
1.30 paf 178: }
179: #endif
1.38 paf 180: frame.store_param(origin_name,
181: origin_value?origin_value:NEW VUnknown(pool()));
1.28 paf 182:
1.30 paf 183: // source
1.43 ! paf 184: LOCAL_CONST(source_name, "source");
1.38 paf 185: Value *source_value=0;
1.43 ! paf 186: if(problem_source) {
! 187: String& problem_source_copy=*NEW String(*problem_source);
! 188: problem_source_copy.change_lang(flang);
! 189: source_value=NEW VString(problem_source_copy);
! 190: }
1.38 paf 191: frame.store_param(source_name,
192: source_value?source_value:NEW VUnknown(pool()));
1.30 paf 193:
194: // comment
1.43 ! paf 195: LOCAL_CONST(comment_name, "comment");
! 196: String *NEW_TAINTED(comment_value, e.comment());
1.38 paf 197: frame.store_param(comment_name,
1.30 paf 198: NEW VString(*comment_value));
199:
200: // type
1.43 ! paf 201: LOCAL_CONST(type_name, "type");
1.30 paf 202: Value *type_value;
1.43 ! paf 203: if(e.type()) {
! 204: String& type_copy=*NEW String(*e.type());
! 205: type_copy.change_lang(flang);
! 206: type_value=NEW VString(type_copy);
! 207: } else
1.30 paf 208: type_value=NEW VUnknown(pool());
1.38 paf 209: frame.store_param(type_name, type_value);
1.30 paf 210:
211: // code
1.43 ! paf 212: LOCAL_CONST(code_name, "code");
1.30 paf 213: Value *code_value;
1.43 ! paf 214: if(e.code()) {
! 215: String& code_copy=*NEW String(*e.code());
! 216: code_copy.change_lang(flang);
! 217: code_value=NEW VString(code_copy);
! 218: } else
1.30 paf 219: code_value=NEW VUnknown(pool());
1.38 paf 220: frame.store_param(code_name, code_value);
1.30 paf 221:
1.43 ! paf 222: // future $response:content-type=
! 223: // content-type from any auto.p
! 224: content_type=fdefault_content_type;
! 225: // future $response:body=
! 226: // execute ^exception[origin;source;comment;type;code]
! 227: body_string=execute_method(frame, *method);
1.30 paf 228: }
229: }
230:
1.41 paf 231: if(!body_string) { // couldn't report an error beautifully?
232: // doing that ugly
233:
234: // make up result: $origin $source $comment $type $code
235: char *buf=(char *)malloc(MAX_STRING);
1.30 paf 236: size_t printed=0;
237: const String *problem_source=e.problem_source();
238: if(problem_source) {
1.16 paf 239: #ifndef NO_STRING_ORIGIN
1.30 paf 240: const Origin& origin=problem_source->origin();
241: if(origin.file)
1.41 paf 242: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s(%d): ",
1.30 paf 243: origin.file, 1+origin.line);
1.28 paf 244: #endif
1.41 paf 245: printed+=snprintf(buf+printed, MAX_STRING-printed, "'%s' ",
1.30 paf 246: problem_source->cstr());
247: }
1.41 paf 248: printed+=snprintf(buf+printed, MAX_STRING-printed, "%s",
1.30 paf 249: e.comment());
250: const String *type=e.type();
251: if(type) {
1.41 paf 252: printed+=snprintf(buf+printed, MAX_STRING-printed, " type: %s",
1.30 paf 253: type->cstr());
254: const String *code=e.code();
255: if(code)
1.41 paf 256: printed+=snprintf(buf+printed, MAX_STRING-printed, ", code: %s",
1.30 paf 257: code->cstr());
258: }
1.41 paf 259: String *error_string=NEW String(pool()); error_string->APPEND_CONST(buf);
1.43 ! paf 260:
! 261: // future $response:content-type
! 262: String &content_type_value=*NEW String(pool());
! 263: content_type_value.APPEND_CONST("text/plain");
! 264: content_type=NEW VString(content_type_value);
! 265: // future $response:body
1.41 paf 266: body_string=error_string;
1.30 paf 267: }
1.41 paf 268:
1.43 ! paf 269: // store $response:content-type
! 270: response.fields().put(*content_type_name, content_type);
! 271: // store $response:body
1.41 paf 272: response.fields().put(*body_name, NEW VString(*body_string));
1.3 paf 273: }
1.30 paf 274: CATCH(e) {
1.41 paf 275: // exception in request exception handler
276: // remember to rethrow it
277: rethrow_me=e; need_rethrow=true;
1.1 paf 278: }
1.30 paf 279: END_CATCH
1.1 paf 280: }
1.41 paf 281: END_CATCH // do not use pool() after this point - no exception handler set
282: // any throw() would try to use zero exception() pointer
283:
284: if(need_rethrow) // there were an exception set for us to rethrow?
285: system_exception._throw(rethrow_me.type(), rethrow_me.code(),
286: rethrow_me.problem_source(),
287: rethrow_me.comment());
1.28 paf 288:
1.1 paf 289: }
290:
1.26 paf 291: VStateless_class *Request::use_file(
292: const char *file, bool fail_on_read_problem,
293: const String *name,
294: VStateless_class *base_class) {
1.3 paf 295: // TODO: обнаружить|решить cyclic dependences
1.5 paf 296: char *source=file_read(pool(), file, fail_on_read_problem);
1.3 paf 297: if(!source)
1.12 paf 298: return base_class;
1.3 paf 299:
1.25 paf 300: return use_buf(source, file, 0/*new class*/, name, base_class);
1.16 paf 301: }
302:
1.26 paf 303: VStateless_class *Request::use_buf(
304: const char *source, const char *file,
305: VStateless_class *aclass, const String *name,
306: VStateless_class *base_class) {
1.5 paf 307: // compile loaded class
1.26 paf 308: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 309:
1.4 paf 310: // locate and execute possible @auto[] static method
1.25 paf 311: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 312: return &cclass;
1.20 paf 313: }
314:
315: void Request::fail_if_junction_(bool is,
1.26 paf 316: Value& value, const String& method_name, char *msg) {
1.20 paf 317:
318: // fail_if_junction(true, junction = fail
319: // fail_if_junction(false, not junction = fail
320: if((value.get_junction()!=0) ^ !is)
321: THROW(0, 0,
322: &method_name,
323: msg);
1.19 paf 324: }
325:
326: char *Request::relative(const char *path, const char *file) {
1.21 paf 327: char *result=(char *)malloc(strlen(path)+strlen(file)+1);
1.19 paf 328: strcpy(result, path);
1.32 paf 329: rsplit(result, PATH_DELIMITER_CHAR);
330: strcat(result, PATH_DELIMITER_STRING);
1.19 paf 331: strcat(result, file);
332: return result;
333: }
334:
335: char *Request::absolute(const char *name) {
336: if(name[0]=='/') {
1.35 paf 337: char *result=(char *)malloc(strlen(info.document_root)+strlen(name)+1);
338: strcpy(result, info.document_root);
1.19 paf 339: strcat(result, name);
340: return result;
341: } else
1.40 paf 342: return relative(info.uri, name);
1.1 paf 343: }