dlls/msxml3/main.c

   1 /*
   2  *    MSXML Class Factory
   3  *
   4  * Copyright 2002 Lionel Ulmer
   5  * Copyright 2005 Mike McCormack
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #define COBJMACROS
  26
  27 #include <stdarg.h>
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winuser.h"
  31 #include "ole2.h"
  32 #include "msxml.h"
  33 #include "msxml6.h"
  34
  35 #include "wine/unicode.h"
  36 #include "wine/debug.h"
  37 #include "wine/library.h"
  38
  39 #include "msxml_private.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(msxml);
  42
  43 #ifdef HAVE_LIBXML2
  44
  45 void wineXmlCallbackLog(char const* caller, xmlErrorLevel lvl, char const* msg, va_list ap)
  46 {
  47     char* buf = NULL;
  48     int len = 32, needed;
  49     enum __wine_debug_class dbcl = __WINE_DBCL_ERR;
  50     switch (lvl)
  51     {
  52         case XML_ERR_NONE:
  53             dbcl = __WINE_DBCL_TRACE;
  54             break;
  55         case XML_ERR_WARNING:
  56             dbcl = __WINE_DBCL_WARN;
  57             break;
  58         default:
  59             break;
  60     }
  61
  62     if (ap)
  63     {
  64         do
  65         {
  66             heap_free(buf);
  67             buf = heap_alloc(len);
  68             needed = vsnprintf(buf, len, msg, ap);
  69             if (needed == -1)
  70                 len *= 2;
  71             else if (needed >= len)
  72                 len = needed + 1;
  73             else
  74                 needed = 0;
  75         }
  76         while (needed);
  77
  78         wine_dbg_log(dbcl, &__wine_dbch_msxml, caller, buf);
  79         heap_free(buf);
  80     }
  81     else
  82     {
  83         wine_dbg_log(dbcl, &__wine_dbch_msxml, caller, msg);
  84     }
  85 }
  86
  87 /* Support for loading xml files from a Wine Windows drive */
  88 static int wineXmlMatchCallback (char const * filename)
  89 {
  90     int nRet = 0;
  91
  92     TRACE("%s\n", filename);
  93
  94     /*
  95      * We will deal with loading XML files from the file system
  96      *   We only care about files that linux cannot find.
  97      *    e.g. C:,D: etc
  98      */
  99     if(isalpha(filename[0]) && filename[1] == ':')
 100         nRet = 1;
 101
 102     return nRet;
 103 }
 104
 105 static void *wineXmlOpenCallback (char const * filename)
 106 {
 107     BSTR sFilename = bstr_from_xmlChar( (const xmlChar*)filename);
 108     HANDLE hFile;
 109
 110     TRACE("%s\n", debugstr_w(sFilename));
 111
 112     hFile = CreateFileW(sFilename, GENERIC_READ,FILE_SHARE_READ, NULL,
 113                        OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL, NULL);
 114     if(hFile == INVALID_HANDLE_VALUE) hFile = 0;
 115     SysFreeString(sFilename);
 116     return hFile;
 117 }
 118
 119 static int wineXmlReadCallback(void * context, char * buffer, int len)
 120 {
 121     DWORD dwBytesRead;
 122
 123     TRACE("%p %s %d\n", context, buffer, len);
 124
 125     if ((context == NULL) || (buffer == NULL))
 126         return(-1);
 127
 128     if(!ReadFile( context, buffer,len, &dwBytesRead, NULL))
 129     {
 130         ERR("Failed to read file\n");
 131         return -1;
 132     }
 133
 134     TRACE("Read %d\n", dwBytesRead);
 135
 136     return dwBytesRead;
 137 }
 138
 139 static int wineXmlFileCloseCallback (void * context)
 140 {
 141     return CloseHandle(context) ? 0 : -1;
 142 }
 143
 144 #endif
 145
 146
 147 HRESULT WINAPI DllCanUnloadNow(void)
 148 {
 149     return S_FALSE;
 150 }
 151
 152
 153 void* libxslt_handle = NULL;
 154 #ifdef SONAME_LIBXSLT
 155 # define DECL_FUNCPTR(f) typeof(f) * p##f = NULL
 156 DECL_FUNCPTR(xsltApplyStylesheet);
 157 DECL_FUNCPTR(xsltCleanupGlobals);
 158 DECL_FUNCPTR(xsltFreeStylesheet);
 159 DECL_FUNCPTR(xsltParseStylesheetDoc);
 160 # undef DECL_FUNCPTR
 161 #endif
 162
 163 static void init_libxslt(void)
 164 {
 165 #ifdef SONAME_LIBXSLT
 166     void (*pxsltInit)(void); /* Missing in libxslt <= 1.1.14 */
 167
 168     libxslt_handle = wine_dlopen(SONAME_LIBXSLT, RTLD_NOW, NULL, 0);
 169     if (!libxslt_handle)
 170         return;
 171
 172 #define LOAD_FUNCPTR(f, needed) if ((p##f = wine_dlsym(libxslt_handle, #f, NULL, 0)) == NULL && needed) { WARN("Can't find symbol %s\n", #f); goto sym_not_found; }
 173     LOAD_FUNCPTR(xsltInit, 0);
 174     LOAD_FUNCPTR(xsltApplyStylesheet, 1);
 175     LOAD_FUNCPTR(xsltCleanupGlobals, 1);
 176     LOAD_FUNCPTR(xsltFreeStylesheet, 1);
 177     LOAD_FUNCPTR(xsltParseStylesheetDoc, 1);
 178 #undef LOAD_FUNCPTR
 179
 180     if (pxsltInit)
 181         pxsltInit();
 182     return;
 183
 184  sym_not_found:
 185     wine_dlclose(libxslt_handle, NULL, 0);
 186     libxslt_handle = NULL;
 187 #endif
 188 }
 189
 190
 191 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpv)
 192 {
 193     switch(fdwReason)
 194     {
 195     case DLL_PROCESS_ATTACH:
 196 #ifdef HAVE_LIBXML2
 197         xmlInitParser();
 198
 199         /* Set the default indent character to a single tab,
 200            for this thread and as default for new threads */
 201         xmlTreeIndentString = "\t";
 202         xmlThrDefTreeIndentString("\t");
 203
 204          /* Register callbacks for loading XML files */
 205         if(xmlRegisterInputCallbacks(wineXmlMatchCallback, wineXmlOpenCallback,
 206                             wineXmlReadCallback, wineXmlFileCloseCallback) == -1)
 207             WARN("Failed to register callbacks\n");
 208
 209 #endif
 210         init_libxslt();
 211         DisableThreadLibraryCalls(hInstDLL);
 212         break;
 213     case DLL_PROCESS_DETACH:
 214 #ifdef SONAME_LIBXSLT
 215         if (libxslt_handle)
 216         {
 217             pxsltCleanupGlobals();
 218             wine_dlclose(libxslt_handle, NULL, 0);
 219             libxslt_handle = NULL;
 220         }
 221 #endif
 222 #ifdef HAVE_LIBXML2
 223         /* Restore default Callbacks */
 224         xmlCleanupInputCallbacks();
 225         xmlRegisterDefaultInputCallbacks();
 226
 227         xmlCleanupParser();
 228 #endif
 229         release_typelib();
 230         break;
 231     }
 232     return TRUE;
 233 }