Annotation of parser3/src/types/pa_vcookie.C, revision 1.71
1.6 paf 1: /** @file
2: Parser: cookie class.
3:
1.68 paf 4: Copyright(c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
1.34 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.44 paf 6: */
1.6 paf 7:
1.71 ! misha 8: static const char * const IDENT_VCOOKIE_C="$Date: 2006/12/07 18:29:35 $";
1.1 paf 9:
1.11 paf 10: #include "pa_sapi.h"
1.3 paf 11: #include "pa_common.h"
1.1 paf 12: #include "pa_vcookie.h"
13: #include "pa_vstring.h"
1.49 paf 14: #include "pa_vdate.h"
1.56 paf 15: #include "pa_vhash.h"
16:
17: // defines
18:
19: #define PATH_NAME "path"
20: #define PATH_VALUE_DEFAULT "/"
1.1 paf 21:
22: #define SESSION_NAME "session"
23: #define DEFAULT_EXPIRES_DAYS 90
1.9 paf 24:
1.56 paf 25: // statics
26:
27: static const String path_name(PATH_NAME);
28: static const String path_value_default(PATH_VALUE_DEFAULT);
29:
1.1 paf 30: // VCookie
31:
1.56 paf 32: Value* VCookie::get_element(const String& aname, Value& /*aself*/, bool /*looking_up*/) {
1.28 parser 33: // $CLASS
1.46 paf 34: if(aname==CLASS_NAME)
1.28 parser 35: return this;
36:
1.1 paf 37: // $cookie
1.46 paf 38: if(deleted.get(aname)) // deleted?
1.1 paf 39: return 0;
40:
1.56 paf 41: if(Value* after_meaning=after.get(aname)) // assigned 'after'?
42: if(HashStringValue *hash=after_meaning->get_hash())
43: return hash->get(value_name);
1.2 paf 44: else
45: return after_meaning;
1.1 paf 46:
47: // neither deleted nor assigned
48: // return any value it had 'before'
1.56 paf 49: return before.get(aname);
1.1 paf 50: }
51:
1.67 paf 52: const VJunction* VCookie::put_element(Value& /*aself*/, const String& aname, Value* avalue, bool /*replace*/) {
1.1 paf 53: // $cookie
1.56 paf 54: Value* lvalue;
55: if(HashStringValue *hash=avalue->get_hash())
56: lvalue=hash->get(value_name);
1.1 paf 57: else
1.50 paf 58: lvalue=avalue;
1.51 paf 59:
60: if(lvalue && lvalue->is_string()) {
61: // taint string being assigned
1.56 paf 62: String& tainted=*new String;
63: tainted.append(*lvalue->get_string(), String::L_TAINTED, true /*forced*/);
64: lvalue=new VString(tainted);
1.51 paf 65: }
1.1 paf 66:
1.71 ! misha 67: if( !lvalue || lvalue->as_string().is_empty() ) {
! 68: deleted.put(aname, avalue);
! 69: after.put(aname, 0);
! 70: } else {
! 71: after.put(aname, avalue);
! 72: deleted.put(aname, 0);
! 73: }
1.64 paf 74: return PUT_ELEMENT_REPLACED_ELEMENT;
1.1 paf 75: }
76:
1.26 parser 77: static char *search_stop(char*& current, char cstop_at) {
1.37 paf 78: // sanity check
79: if(!current)
80: return 0;
81:
1.26 parser 82: // skip leading WS
83: while(*current==' ' || *current=='\t')
84: current++;
85: if(!*current)
86: return current=0;
87:
88: char *result=current;
89: if(char *pstop_at=strchr(current, cstop_at)) {
90: *pstop_at=0;
91: current=pstop_at+1;
92: } else
93: current=0;
94: return result;
95: }
96:
97:
1.6 paf 98: //#include <stdio.h>
1.56 paf 99: void VCookie::fill_fields(Request_info& request_info) {
100: //request_info.cookie="test-session=value%3D5; test-default1=value%3D1; test-default2=value%3D2; test-tomorrow=value%3D3";
101: //request_info.cookie="enabled=yes; auth.uid=196325308053599810; enabled=yes; msnames; msuri"; // mdm
102: if(!request_info.cookie)
1.1 paf 103: return;
104: /*
105: FILE *f=fopen("c:\\temp\\a", "wt");
1.56 paf 106: fprintf(f, "cookie=%s", request_info.cookie);
1.1 paf 107: fclose(f);*/
1.56 paf 108: char *cookies=strdup(request_info.cookie);
109: char *current=cookies;
1.26 parser 110: //_asm int 3;
1.56 paf 111: do {
1.26 parser 112: if(char *attribute=search_stop(current, '='))
1.38 paf 113: if(char *meaning=search_stop(current, ';')) {
1.56 paf 114: const String& sattribute=
115: *new String(unescape_chars(attribute, strlen(attribute)), 0, true);
116: const String& smeaning=
117: *new String(unescape_chars(meaning, strlen(meaning)), 0, true);
118: before.put(sattribute, new VString(smeaning));
1.38 paf 119: }
1.1 paf 120: } while(current);
121: }
122:
1.56 paf 123: static Value& expires_vdate(double days_till_expire) {
1.1 paf 124: time_t when=time(NULL)+(time_t)(60*60*24*days_till_expire);
125: struct tm *tms=gmtime(&when);
1.41 paf 126: if(!tms)
1.43 paf 127: throw Exception(0,
1.56 paf 128: 0,
1.62 paf 129: "bad expires time (seconds from epoch=%u)", when);
1.49 paf 130:
1.56 paf 131: return *new VDate(when);
1.1 paf 132: }
133:
1.25 parser 134: /*
1.49 paf 135: @todo
136: http://www.netscape.com/newsref/std/cookie_spec.html
1.25 parser 137: When sending cookies to a server,
138: all cookies with a more specific path mapping should be sent before cookies
139: with less specific path mappings.
140: For example, a cookie "name1=foo" with a path mapping of "/" should be sent after
141: a cookie "name1=foo2" with a path mapping of "/bar" if they are both to be sent.
142:
143: There are limitations on the number of cookies that a client can store at any one time.
144: This is a specification of the minimum number of cookies that a client should be prepared
145: to receive and store.
146: 300 total cookies
147: 4 kilobytes per cookie, where the name and the OPAQUE_STRING combine
148: to form the 4 kilobyte limit.
149: 20 cookies per server or domain. (note that completely specified hosts
150: and domains are treated as separate entities and have a 20 cookie limitation
151: for each, not combined)
152: */
1.61 paf 153: static void output_set_cookie_header(
1.56 paf 154: HashStringValue::key_type aattribute,
155: HashStringValue::value_type ameaning,
1.61 paf 156: bool adelete,
1.56 paf 157: SAPI_Info& sapi_info) {
158: String string;
1.1 paf 159: // attribute
1.56 paf 160: string.append(String(aattribute, String::L_TAINTED), String::L_HTTP_HEADER, true);
1.1 paf 161: // attribute=
1.19 paf 162: string << "=";
1.56 paf 163: Value* lmeaning;
1.1 paf 164: // figure out 'meaning'
1.61 paf 165: // Set-Cookie: (attribute)=(value); path=/
166: HashStringValue *hash;
167: double default_expires_days=adelete?-DEFAULT_EXPIRES_DAYS:+DEFAULT_EXPIRES_DAYS;
168: if((hash=ameaning->get_hash())) { // ...[hash value]
169: // clone to safely change it
170: lmeaning=new VHash(*hash); hash=lmeaning->get_hash();
171: // $expires
172: if(Value* expires=hash->get(expires_name)) {
173: const String* string;
174: if(expires->is_string() && (string=expires->get_string()) && (*string==SESSION_NAME)) {
175: // $expires[session]
176: hash->remove(expires_name);
177: } else {
178: if(Value* vdate=expires->as(VDATE_TYPE, false))
179: hash->put(expires_name, vdate); // $expires[DATE]
180: else if(double days_till_expire=expires->as_double())
181: hash->put(expires_name, &expires_vdate(days_till_expire)); // $expires(days)
182: else
183: hash->remove(expires_name); // $expires(0)
184: }
185: } else // $expires not assigned, defaulting
186: hash->put(expires_name, &expires_vdate(default_expires_days));
187: } else { // ...[string value]
188: Value* wrap_meaning=new VHash;
189: hash=wrap_meaning->get_hash();
190: // wrapping lmeaning into hash
191: hash->put(value_name, ameaning);
192: // string = $expires not assigned, defaulting
193: hash->put(expires_name, &expires_vdate(default_expires_days));
194: // replacing lmeaning with hash-wrapped one
195: lmeaning=wrap_meaning;
196: }
197:
198: if(adelete) {// removing value
1.25 parser 199: /*
200: http://www.netscape.com/newsref/std/cookie_spec.html
201: to delete a cookie, it can do so by returning a cookie with the same name,
202: and an expires time which is in the past
203: */
204:
1.1 paf 205: // Set-Cookie: (attribute)=; path=/
1.61 paf 206: lmeaning->get_hash()->remove(value_name);
1.1 paf 207: }
208: // defaulting path
1.56 paf 209: if(!lmeaning->get_hash()->get(path_name))
210: lmeaning->get_hash()->put(path_name,
211: new VString(path_value_default));
1.1 paf 212:
1.56 paf 213: // append lmeaning
1.70 misha 214: string << attributed_meaning_to_string(*lmeaning, String::L_HTTP_HEADER, true, true /* allow bool attr */);
1.1 paf 215:
216: // output
1.56 paf 217: SAPI::add_header_attribute(sapi_info, "set-cookie", string.cstr(String::L_UNSPECIFIED));
1.1 paf 218: }
1.56 paf 219: static void output_after(
220: HashStringValue::key_type aattribute,
221: HashStringValue::value_type ameaning,
1.69 paf 222: SAPI_Info& sapi_info) {
223: output_set_cookie_header(aattribute, ameaning, false, sapi_info);
1.56 paf 224: }
225: static void output_deleted(
226: HashStringValue::key_type aattribute,
227: HashStringValue::value_type ameaning,
1.69 paf 228: SAPI_Info& sapi_info) {
1.56 paf 229: if(ameaning)
1.69 paf 230: output_set_cookie_header(aattribute, ameaning, true, sapi_info);
1.56 paf 231: }
232: void VCookie::output_result(SAPI_Info& sapi_info) {
1.69 paf 233: after.for_each<SAPI_Info&>(output_after, sapi_info);
234: deleted.for_each<SAPI_Info&>(output_deleted, sapi_info);
1.1 paf 235: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to pa_vcookie.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / types