dlls/mshtml/loadopts.c

   1 /*
   2  * Copyright 2006 Jacek Caban 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
  21 #include <stdarg.h>
  22 #include <stdio.h>
  23
  24 #define COBJMACROS
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winuser.h"
  29 #include "ole2.h"
  30 #include "optary.h"
  31
  32 #include "wine/debug.h"
  33
  34 #include "mshtml_private.h"
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  37
  38 typedef struct load_opt {
  39     DWORD option;
  40     PVOID buffer;
  41     DWORD size;
  42
  43     struct load_opt *next;
  44 } load_opt;
  45
  46 typedef struct {
  47     IHtmlLoadOptions IHtmlLoadOptions_iface;
  48
  49     LONG ref;
  50
  51     load_opt *opts;
  52 } HTMLLoadOptions;
  53
  54 static inline HTMLLoadOptions *impl_from_IHtmlLoadOptions(IHtmlLoadOptions *iface)
  55 {
  56     return CONTAINING_RECORD(iface, HTMLLoadOptions, IHtmlLoadOptions_iface);
  57 }
  58
  59 static HRESULT WINAPI HtmlLoadOptions_QueryInterface(IHtmlLoadOptions *iface,
  60         REFIID riid, void **ppv)
  61 {
  62     HTMLLoadOptions *This = impl_from_IHtmlLoadOptions(iface);
  63
  64     *ppv = NULL;
  65
  66     if(IsEqualGUID(&IID_IUnknown, riid)) {
  67         TRACE("(%p)->(IID_IUnknown %p)\n", This, ppv);
  68         *ppv = &This->IHtmlLoadOptions_iface;
  69     }else if(IsEqualGUID(&IID_IOptionArray, riid)) {
  70         TRACE("(%p)->(IID_IOptionArray %p)\n", This, ppv);
  71         *ppv = &This->IHtmlLoadOptions_iface;
  72     }else if(IsEqualGUID(&IID_IHtmlLoadOptions, riid)) {
  73         TRACE("(%p)->(IID_IHtmlLoadOptions %p)\n", This, ppv);
  74         *ppv = &This->IHtmlLoadOptions_iface;
  75     }
  76
  77     if(*ppv) {
  78         IHtmlLoadOptions_AddRef(&This->IHtmlLoadOptions_iface);
  79         return S_OK;
  80     }
  81
  82     WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), ppv);
  83     return E_NOINTERFACE;
  84 }
  85
  86 static ULONG WINAPI HtmlLoadOptions_AddRef(IHtmlLoadOptions *iface)
  87 {
  88     HTMLLoadOptions *This = impl_from_IHtmlLoadOptions(iface);
  89     LONG ref = InterlockedIncrement(&This->ref);
  90
  91     TRACE("(%p) ref=%d\n", This, ref);
  92
  93     return ref;
  94 }
  95
  96 static ULONG WINAPI HtmlLoadOptions_Release(IHtmlLoadOptions *iface)
  97 {
  98     HTMLLoadOptions *This = impl_from_IHtmlLoadOptions(iface);
  99     LONG ref = InterlockedDecrement(&This->ref);
 100
 101     TRACE("(%p) ref=%d\n", This, ref);
 102
 103     if(!ref) {
 104         load_opt *iter = This->opts, *last;
 105
 106         while(iter) {
 107             last = iter;
 108             iter = iter->next;
 109
 110             heap_free(last->buffer);
 111             heap_free(last);
 112         }
 113
 114         heap_free(This);
 115     }
 116
 117     return ref;
 118 }
 119
 120 static HRESULT WINAPI HtmlLoadOptions_QueryOption(IHtmlLoadOptions *iface, DWORD dwOption,
 121         LPVOID pBuffer, ULONG *pcbBuf)
 122 {
 123     HTMLLoadOptions *This = impl_from_IHtmlLoadOptions(iface);
 124     load_opt *iter;
 125
 126     TRACE("(%p)->(%d %p %p)\n", This, dwOption, pBuffer, pcbBuf);
 127
 128     for(iter = This->opts; iter; iter = iter->next) {
 129         if(iter->option == dwOption)
 130             break;
 131     }
 132
 133     if(!iter) {
 134         *pcbBuf = 0;
 135         return S_OK;
 136     }
 137
 138     if(*pcbBuf < iter->size) {
 139         *pcbBuf = iter->size;
 140         return E_FAIL;
 141     }
 142
 143     memcpy(pBuffer, iter->buffer, iter->size);
 144     *pcbBuf = iter->size;
 145
 146     return S_OK;
 147 }
 148
 149 static HRESULT WINAPI HtmlLoadOptions_SetOption(IHtmlLoadOptions *iface, DWORD dwOption,
 150         LPVOID pBuffer, ULONG cbBuf)
 151 {
 152     HTMLLoadOptions *This = impl_from_IHtmlLoadOptions(iface);
 153     load_opt *iter = NULL;
 154
 155     TRACE("(%p)->(%d %p %d)\n", This, dwOption, pBuffer, cbBuf);
 156
 157     for(iter = This->opts; iter; iter = iter->next) {
 158         if(iter->option == dwOption)
 159             break;
 160     }
 161
 162     if(!iter) {
 163         iter = heap_alloc(sizeof(load_opt));
 164         iter->next = This->opts;
 165         This->opts = iter;
 166
 167         iter->option = dwOption;
 168     }else {
 169         heap_free(iter->buffer);
 170     }
 171
 172     if(!cbBuf) {
 173         iter->buffer = NULL;
 174         iter->size = 0;
 175
 176         return S_OK;
 177     }
 178
 179     iter->size = cbBuf;
 180     iter->buffer = heap_alloc(cbBuf);
 181     memcpy(iter->buffer, pBuffer, iter->size);
 182
 183     return S_OK;
 184 }
 185
 186 static const IHtmlLoadOptionsVtbl HtmlLoadOptionsVtbl = {
 187     HtmlLoadOptions_QueryInterface,
 188     HtmlLoadOptions_AddRef,
 189     HtmlLoadOptions_Release,
 190     HtmlLoadOptions_QueryOption,
 191     HtmlLoadOptions_SetOption
 192 };
 193
 194 HRESULT HTMLLoadOptions_Create(IUnknown *pUnkOuter, REFIID riid, void** ppv)
 195 {
 196     HTMLLoadOptions *ret;
 197     HRESULT hres;
 198
 199     TRACE("(%p %s %p)\n", pUnkOuter, debugstr_guid(riid), ppv);
 200
 201     ret = heap_alloc(sizeof(HTMLLoadOptions));
 202
 203     ret->IHtmlLoadOptions_iface.lpVtbl = &HtmlLoadOptionsVtbl;
 204     ret->ref = 1;
 205     ret->opts = NULL;
 206
 207     hres = IHtmlLoadOptions_QueryInterface(&ret->IHtmlLoadOptions_iface, riid, ppv);
 208     IHtmlLoadOptions_Release(&ret->IHtmlLoadOptions_iface);
 209
 210     return hres;
 211 }