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source\lib\http\cookies.g
  1 /******************************************************************************
  2 *
  3 * Copyright (C) 2004-2008, The Gentee Group. All rights reserved. 
  4 * This file is part of the Gentee open source project - http://www.gentee.com. 
  5 * 
  6 * THIS FILE IS PROVIDED UNDER THE TERMS OF THE GENTEE LICENSE ("AGREEMENT"). 
  7 * ANY USE, REPRODUCTION OR DISTRIBUTION OF THIS FILE CONSTITUTES RECIPIENTS 
  8 * ACCEPTANCE OF THE AGREEMENT.
  9 *
 10 * Author: Alexander Krivonogov ( gentee )
 11 *
 12 ******************************************************************************/
 13 include {   
 14    "..\\gt\\gt.g"      
 15 }
 16 
 17 type cookies <inherit = gt>
 18 {
 19    str curfilename
 20    hash hosts      
 21 }
 22 
 23 type cookie
 24 {
 25    str name
 26    str value
 27    str domain
 28    str path
 29    datetime  expires 
 30    uint secure
 31 }
 32 
 33 method cookies.read( str filename )
 34 {
 35    datetime cdt, dt   
 36    cdt.gettime()
 37    this->gt.read( filename )
 38    .curfilename = filename   
 39    foreach chost, this.root()
 40    {      
 41       foreach ccookie, chost
 42       {
 43          dt.fromstr( ccookie.get( "expires" ))
 44          if dt < cdt 
 45          {
 46             ccookie.del()
 47          }
 48       }
 49       if chost.child()
 50       {  
 51          str name
 52          chost.get("name", name )
 53          this.hosts[name] = &chost
 54       }
 55       else : chost.del()
 56       
 57    }
 58 }
 59 
 60 method cookies.write( str filename )
 61 {  
 62    if &filename && *filename : this->gt.write( filename )      
 63 }
 64 
 65 method cookies.write()
 66 {   
 67    .write( .curfilename )
 68 }
 69 
 70 
 71 method str cookies.get<result>( str host, str path )
 72 {  
 73    datetime cdt, dt   
 74    arrstr arp
 75    cdt.gettime()
 76    str domain2 
 77    host.split( arp, '.', 0 )
 78    if *arp >= 1
 79    {
 80       domain2 = "\(arp[*arp-2]).\(arp[*arp-1])"
 81    }
 82    else : domain2=host
 83    
 84    uint chost = .hosts.find(domain2)
 85    if chost
 86    {
 87       chost as chost->uint->gtitem
 88       foreach ccookie, chost
 89       {
 90          
 91          dt.fromstr( ccookie.get( "expires" ) )
 92          if dt.year!=0 && dt < cdt 
 93          {
 94             ccookie.del()
 95          }
 96          else
 97          {    
 98             if ccookie.get( "path" ).eqlen( path )
 99             { 
100                str domain
101                ccookie.get( "domain", domain ) 
102                if *host >= *domain 
103                {
104                   if "".substr( host, *host - *domain, *domain ) == domain
105                   {
106                      if *result : result@"; "
107                      result@"\(ccookie.get("name",""))=\(ccookie.value)"
108                   }
109                }
110             }
111 
112 /*            str cpath
113             ccookie.get( "path", cpath )
114             if cpath.eqlen( path )
115             {
116                if *result : result@"; ";
117                result@"\(ccookie.name)=\(ccookie.value)"
118             }*/
119          }  
120       }
121    }      
122 }
123 
124 
125 method cookies.set( str host, str path, str setcookie )
126 {
127    cookie c
128    arrstr arp
129    str domain2 
130    host.split( arp, '.', 0 )
131    if *arp >= 1
132    {
133       domain2="\(arp[*arp-2]).\(arp[*arp-1])"
134    }
135    else : domain2=host
136    arp.clear()   
137    
138    c.path = path
139    c.domain = host
140    
141    setcookie.split( arp, ';', $SPLIT_NOSYS )
142    foreach pair, arp
143    {
144       arrstr arv
145       pair.split( arv, '=', $SPLIT_NOSYS | $SPLIT_FIRST )
146       if *arv
147       {         
148          str val, stmp
149          
150          if *arv[0] > 4096 : arv[0].setlen( 4096 )  
151          if *arv > 1
152          {              
153             val = arv[1]
154             if *val > 4096 : val.setlen( 4096 )
155          }
156          stmp = arv[0]
157          stmp.lower()
158          switch ( stmp )
159          {
160             case "secure": c.secure = 1
161             case "path":   c.path   = val
162             case "domain": c.domain = val
163             case "expires": c.expires.frominet( val )
164             case "httponly": ;
165             default
166             {                 
167                c.name   = arv[0]
168                c.value  = val
169             }
170          }
171       }
172    }
173    if *c.name
174    { 
175       uint curhost      
176       if curhost = this.hosts.find( domain2 )
177       {
178          curhost = curhost->uint
179       }
180       else
181       {
182          curhost as this.root().insertchild( "", (-1)->gtitem )
183          curhost.set( "name", domain2 )
184          this.hosts[ domain2 ] = &curhost
185       }
186       
187       curhost as gtitem
188       
189       foreach curcookie, curhost
190       {
191          if curcookie.get( "name" ) == c.name  &&
192             curcookie.get( "path" ) == c.path  &&
193             curcookie.get( "domain" ) == c.domain 
194          {
195             break
196          }
197       }
198       if !&curcookie
199       {
200          curcookie as curhost.insertchild( "", (-1)->gtitem  )
201       }
202       
203       curcookie.value = c.value
204       curcookie.set( "name", c.name )
205       curcookie.setuint( "secure", c.secure )
206       curcookie.set( "path", c.path )
207       curcookie.set( "domain", c.domain )
208       curcookie.set( "expires", c.expires.tostr("") )      
209    }    
210 }
211 
212 method cookies.parse( str host, str path, str shead )
213 {
214    arrstr   val 
215    arrstr   lines 
216    shead.split( lines, 0xA, $SPLIT_NOSYS )
217    if *lines
218    {  
219       foreach cur, lines
220       {
221          cur.split( val, ':', $SPLIT_NOSYS | $SPLIT_FIRST )                  
222          if *val == 2 &&
223             val[0] == "Set-Cookie" : this.set( host, path, val[1] )
224       }
225    }
226 }
227 
228 global {
229    cookies mcookies
230    uint usecookies 
231 }
232 
233 /*-----------------------------------------------------------------------------
234 * Idx: cookies_init F
235 *
236 * Summary: Cookies initialization. Функции http_get, 
237            http_post, http_file, http_header будут использовать cookies.
238            Cookies от предыдущих сеансов будут браться из файла. 
239 *
240 * Params: filename - The file name where stored cookies data.               
241 *
242 -----------------------------------------------------------------------------*/
243 func cookies_init( str filename )
244 {
245    usecookies = 1
246    mcookies.clear()
247    mcookies.read( filename )
248 }
249 
250 /*-----------------------------------------------------------------------------
251 * Idx: cookies_init F
252 *
253 * Summary: Cookies initialization. Функции http_get, 
254            http_post, http_file, http_header будут использовать cookies.           
255 *
256 * Params: filename - The file name where stored cookies data.               
257 *  
258 -----------------------------------------------------------------------------*/
259 func cookies_init( )
260 {
261    cookies_init( "" )
262 }
263 
264 /*-----------------------------------------------------------------------------
265 * Idx: cookies_deinit F
266 *
267 * Summary: Отключение использования cookies и запись данных в файл, 
268            если он был указан при cookies_init.
269 *
270 *
271 -----------------------------------------------------------------------------*/
272 func cookies_deinit( )
273 {  
274    usecookies = 0  
275    mcookies.write()
276    mcookies.hosts.clear()
277    mcookies.clear()
278 }
279 
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