dlls/winhttp/cookie.c

   1 /*
   2  * Copyright 2008 Hans Leidekker for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20 #include <stdarg.h>
  21
  22 #include "wine/debug.h"
  23 #include "wine/list.h"
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "winhttp.h"
  28
  29 #include "winhttp_private.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(winhttp);
  32
  33 static domain_t *add_domain( session_t *session, WCHAR *name )
  34 {
  35     domain_t *domain;
  36
  37     if (!(domain = heap_alloc_zero( sizeof(domain_t) ))) return NULL;
  38
  39     list_init( &domain->entry );
  40     list_init( &domain->cookies );
  41
  42     domain->name = strdupW( name );
  43     list_add_tail( &session->cookie_cache, &domain->entry );
  44
  45     TRACE("%s\n", debugstr_w(domain->name));
  46     return domain;
  47 }
  48
  49 static cookie_t *find_cookie( domain_t *domain, const WCHAR *path, const WCHAR *name )
  50 {
  51     struct list *item;
  52     cookie_t *cookie;
  53
  54     LIST_FOR_EACH( item, &domain->cookies )
  55     {
  56         cookie = LIST_ENTRY( item, cookie_t, entry );
  57         if (!strcmpW( cookie->path, path ) && !strcmpiW( cookie->name, name ))
  58         {
  59             TRACE("found %s=%s\n", debugstr_w(cookie->name), debugstr_w(cookie->value));
  60             return cookie;
  61          }
  62     }
  63     return NULL;
  64 }
  65
  66 static BOOL domain_match( const WCHAR *name, domain_t *domain, BOOL partial )
  67 {
  68     TRACE("comparing %s with %s\n", debugstr_w(name), debugstr_w(domain->name));
  69
  70     if (partial && !strstrW( name, domain->name )) return FALSE;
  71     else if (!partial && strcmpW( name, domain->name )) return FALSE;
  72     return TRUE;
  73 }
  74
  75 static void free_cookie( cookie_t *cookie )
  76 {
  77     heap_free( cookie->name );
  78     heap_free( cookie->value );
  79     heap_free( cookie->path );
  80     heap_free( cookie );
  81 }
  82
  83 static void delete_cookie( cookie_t *cookie )
  84 {
  85     list_remove( &cookie->entry );
  86     free_cookie( cookie );
  87 }
  88
  89 void delete_domain( domain_t *domain )
  90 {
  91     cookie_t *cookie;
  92     struct list *item, *next;
  93
  94     LIST_FOR_EACH_SAFE( item, next, &domain->cookies )
  95     {
  96         cookie = LIST_ENTRY( item, cookie_t, entry );
  97         delete_cookie( cookie );
  98     }
  99
 100     list_remove( &domain->entry );
 101     heap_free( domain->name );
 102     heap_free( domain );
 103 }
 104
 105 static BOOL add_cookie( session_t *session, cookie_t *cookie, WCHAR *domain_name, WCHAR *path )
 106 {
 107     domain_t *domain = NULL;
 108     cookie_t *old_cookie;
 109     struct list *item;
 110
 111     LIST_FOR_EACH( item, &session->cookie_cache )
 112     {
 113         domain = LIST_ENTRY( item, domain_t, entry );
 114         if (domain_match( domain_name, domain, FALSE )) break;
 115         domain = NULL;
 116     }
 117     if (!domain)
 118     {
 119         if (!(domain = add_domain( session, domain_name ))) return FALSE;
 120     }
 121     else if ((old_cookie = find_cookie( domain, path, cookie->name ))) delete_cookie( old_cookie );
 122
 123     cookie->path = strdupW( path );
 124     list_add_tail( &domain->cookies, &cookie->entry );
 125
 126     TRACE("domain %s path %s <- %s=%s\n", debugstr_w(domain_name), debugstr_w(cookie->path),
 127           debugstr_w(cookie->name), debugstr_w(cookie->value));
 128     return TRUE;
 129 }
 130
 131 static cookie_t *parse_cookie( const WCHAR *string )
 132 {
 133     cookie_t *cookie;
 134     const WCHAR *p;
 135     int len;
 136
 137     if (!(cookie = heap_alloc_zero( sizeof(cookie_t) ))) return NULL;
 138
 139     list_init( &cookie->entry );
 140
 141     if (!(p = strchrW( string, '=' )))
 142     {
 143         WARN("no '=' in %s\n", debugstr_w(string));
 144         return NULL;
 145     }
 146     if (p == string)
 147     {
 148         WARN("empty cookie name in %s\n", debugstr_w(string));
 149         return NULL;
 150     }
 151     len = p - string;
 152     if (!(cookie->name = heap_alloc( (len + 1) * sizeof(WCHAR) )))
 153     {
 154         heap_free( cookie );
 155         return NULL;
 156     }
 157     memcpy( cookie->name, string, len * sizeof(WCHAR) );
 158     cookie->name[len] = 0;
 159
 160     p++; /* skip '=' */
 161     while (*p == ' ') p++;
 162
 163     len = strlenW( p );
 164     if (!(cookie->value = heap_alloc( (len + 1) * sizeof(WCHAR) )))
 165     {
 166         free_cookie( cookie );
 167         return NULL;
 168     }
 169     memcpy( cookie->value, p, len * sizeof(WCHAR) );
 170     cookie->value[len] = 0;
 171
 172     return cookie;
 173 }
 174
 175 BOOL set_cookies( request_t *request, const WCHAR *cookies )
 176 {
 177     static const WCHAR pathW[] = {'p','a','t','h',0};
 178     static const WCHAR domainW[] = {'d','o','m','a','i','n',0};
 179
 180     BOOL ret = FALSE;
 181     WCHAR *buffer, *p, *q, *r;
 182     WCHAR *cookie_domain = NULL, *cookie_path = NULL;
 183     session_t *session = request->connect->session;
 184     cookie_t *cookie;
 185     int len;
 186
 187     len = strlenW( cookies );
 188     if (!(buffer = heap_alloc( (len + 1) * sizeof(WCHAR) ))) return FALSE;
 189     strcpyW( buffer, cookies );
 190
 191     p = buffer;
 192     while (*p && *p != ';') p++;
 193     if (*p == ';') *p++ = 0;
 194     if (!(cookie = parse_cookie( buffer )))
 195     {
 196         heap_free( buffer );
 197         return FALSE;
 198     }
 199     if ((q = strstrW( p, domainW ))) /* FIXME: do real attribute parsing */
 200     {
 201         while (*q && *q != '=') q++;
 202         if (!*q) goto end;
 203
 204         r = ++q;
 205         while (*r && *r != ';') r++;
 206         len = r - q;
 207
 208         if (!(cookie_domain = heap_alloc( (len + 1) * sizeof(WCHAR) ))) goto end;
 209         memcpy( cookie_domain, q, len * sizeof(WCHAR) );
 210         cookie_domain[len] = 0;
 211
 212     }
 213     if ((q = strstrW( p, pathW )))
 214     {
 215         while (*q && *q != '=') q++;
 216         if (!*q) goto end;
 217
 218         r = ++q;
 219         while (*r && *r != ';') r++;
 220         len = r - q;
 221
 222         if (!(cookie_path = heap_alloc( (len + 1) * sizeof(WCHAR) ))) goto end;
 223         memcpy( cookie_path, q, len * sizeof(WCHAR) );
 224         cookie_path[len] = 0;
 225     }
 226     if (!cookie_domain && !(cookie_domain = strdupW( request->connect->servername ))) goto end;
 227     if (!cookie_path && !(cookie_path = strdupW( request->path ))) goto end;
 228
 229     if ((p = strrchrW( cookie_path, '/' )) && p != cookie_path) *p = 0;
 230     ret = add_cookie( session, cookie, cookie_domain, cookie_path );
 231
 232 end:
 233     if (!ret) free_cookie( cookie );
 234     heap_free( cookie_domain );
 235     heap_free( cookie_path );
 236     heap_free( buffer );
 237     return ret;
 238 }
 239
 240 BOOL add_cookie_headers( request_t *request )
 241 {
 242     struct list *domain_cursor;
 243     session_t *session = request->connect->session;
 244
 245     LIST_FOR_EACH( domain_cursor, &session->cookie_cache )
 246     {
 247         domain_t *domain = LIST_ENTRY( domain_cursor, domain_t, entry );
 248         if (domain_match( request->connect->servername, domain, TRUE ))
 249         {
 250             struct list *cookie_cursor;
 251             TRACE("found domain %s\n", debugstr_w(domain->name));
 252
 253             LIST_FOR_EACH( cookie_cursor, &domain->cookies )
 254             {
 255                 cookie_t *cookie = LIST_ENTRY( cookie_cursor, cookie_t, entry );
 256
 257                 TRACE("comparing path %s with %s\n", debugstr_w(request->path), debugstr_w(cookie->path));
 258
 259                 if (strstrW( request->path, cookie->path ) == request->path)
 260                 {
 261                     const WCHAR format[] = {'C','o','o','k','i','e',':',' ','%','s','=','%','s',0};
 262                     int len;
 263                     WCHAR *header;
 264
 265                     len = strlenW( cookie->name ) + strlenW( format ) + strlenW( cookie->value );
 266                     if (!(header = heap_alloc( (len + 1) * sizeof(WCHAR) ))) return FALSE;
 267
 268                     sprintfW( header, format, cookie->name, cookie->value );
 269
 270                     TRACE("%s\n", debugstr_w(header));
 271                     add_request_headers( request, header, len, WINHTTP_ADDREQ_FLAG_ADD );
 272                     heap_free( header );
 273                 }
 274             }
 275         }
 276     }
 277     return TRUE;
 278 }