dlls/sxs/sxs.c

   1 /*
   2  * sxs main
   3  *
   4  * Copyright 2007 EA Durbin
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <stdlib.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26
  27 #include "wine/debug.h"
  28
  29 WINE_DEFAULT_DEBUG_CHANNEL(sxs);
  30
  31 typedef struct _SXS_GUID_INFORMATION_CLR
  32 {
  33     DWORD cbSize;
  34     DWORD dwFlags;
  35     PCWSTR pcwszRuntimeVersion;
  36     PCWSTR pcwszTypeName;
  37     PCWSTR pcwszAssemblyIdentity;
  38 } SXS_GUID_INFORMATION_CLR, *PSXS_GUID_INFORMATION_CLR;
  39
  40 #define SXS_GUID_INFORMATION_CLR_FLAG_IS_SURROGATE 0x1
  41 #define SXS_GUID_INFORMATION_CLR_FLAG_IS_CLASS     0x2
  42
  43 #define SXS_LOOKUP_CLR_GUID_USE_ACTCTX     0x00000001
  44 #define SXS_LOOKUP_CLR_GUID_FIND_SURROGATE 0x00010000
  45 #define SXS_LOOKUP_CLR_GUID_FIND_CLR_CLASS 0x00020000
  46 #define SXS_LOOKUP_CLR_GUID_FIND_ANY       (SXS_LOOKUP_CLR_GUID_FIND_SURROGATE | SXS_LOOKUP_CLR_GUID_FIND_CLR_CLASS)
  47
  48 struct comclassredirect_data
  49 {
  50     ULONG size;
  51     ULONG flags;
  52     DWORD model;
  53     GUID  clsid;
  54     GUID  alias;
  55     GUID  clsid2;
  56     GUID  tlbid;
  57     ULONG name_len;
  58     ULONG name_offset;
  59     ULONG progid_len;
  60     ULONG progid_offset;
  61     ULONG clrdata_len;
  62     ULONG clrdata_offset;
  63     DWORD miscstatus;
  64     DWORD miscstatuscontent;
  65     DWORD miscstatusthumbnail;
  66     DWORD miscstatusicon;
  67     DWORD miscstatusdocprint;
  68 };
  69
  70 struct clrclass_data
  71 {
  72     ULONG size;
  73     DWORD res[2];
  74     ULONG module_len;
  75     ULONG module_offset;
  76     ULONG name_len;
  77     ULONG name_offset;
  78     ULONG version_len;
  79     ULONG version_offset;
  80     DWORD res2[2];
  81 };
  82
  83 struct clrsurrogate_data
  84 {
  85     ULONG size;
  86     DWORD res;
  87     GUID  clsid;
  88     ULONG version_offset;
  89     ULONG version_len;
  90     ULONG name_offset;
  91     ULONG name_len;
  92 };
  93
  94 BOOL WINAPI SxsLookupClrGuid(DWORD flags, GUID *clsid, HANDLE actctx, void *buffer, SIZE_T buffer_len,
  95                              SIZE_T *buffer_len_required)
  96 {
  97     ACTCTX_SECTION_KEYED_DATA guid_info = { sizeof(ACTCTX_SECTION_KEYED_DATA) };
  98     ACTIVATION_CONTEXT_ASSEMBLY_DETAILED_INFORMATION *assembly_info = NULL;
  99     SIZE_T bytes_assembly_info;
 100     unsigned int len_version = 0, len_name, len_identity;
 101     const void *ptr_name, *ptr_version, *ptr_identity;
 102     SXS_GUID_INFORMATION_CLR *ret = buffer;
 103     BOOL retval = FALSE;
 104     char *ret_strings;
 105     ULONG_PTR cookie;
 106
 107     TRACE("%#lx, %s, %p, %p, %Ix, %p.\n", flags, wine_dbgstr_guid(clsid), actctx,
 108           buffer, buffer_len, buffer_len_required);
 109
 110     if (flags & SXS_LOOKUP_CLR_GUID_USE_ACTCTX)
 111     {
 112         if (!ActivateActCtx(actctx, &cookie))
 113         {
 114             WARN("Failed to activate context.\n");
 115             return FALSE;
 116         }
 117     }
 118
 119     if (flags & SXS_LOOKUP_CLR_GUID_FIND_SURROGATE)
 120     {
 121         if ((retval = FindActCtxSectionGuid(FIND_ACTCTX_SECTION_KEY_RETURN_HACTCTX, NULL,
 122                 ACTIVATION_CONTEXT_SECTION_CLR_SURROGATES, clsid, &guid_info)))
 123         {
 124             flags &= ~SXS_LOOKUP_CLR_GUID_FIND_CLR_CLASS;
 125         }
 126     }
 127
 128     if (!retval && (flags & SXS_LOOKUP_CLR_GUID_FIND_CLR_CLASS))
 129     {
 130         if ((retval = FindActCtxSectionGuid(FIND_ACTCTX_SECTION_KEY_RETURN_HACTCTX, NULL,
 131                 ACTIVATION_CONTEXT_SECTION_COM_SERVER_REDIRECTION, clsid, &guid_info)))
 132         {
 133             flags &= ~SXS_LOOKUP_CLR_GUID_FIND_SURROGATE;
 134         }
 135     }
 136
 137     if (!retval)
 138     {
 139         SetLastError(ERROR_NOT_FOUND);
 140         goto out;
 141     }
 142
 143     retval = QueryActCtxW(0, guid_info.hActCtx, &guid_info.ulAssemblyRosterIndex,
 144             AssemblyDetailedInformationInActivationContext, NULL, 0, &bytes_assembly_info);
 145     if (!retval && GetLastError() != ERROR_INSUFFICIENT_BUFFER)
 146     {
 147         goto out;
 148     }
 149
 150     assembly_info = malloc(bytes_assembly_info);
 151     if (!(retval = QueryActCtxW(0, guid_info.hActCtx, &guid_info.ulAssemblyRosterIndex,
 152             AssemblyDetailedInformationInActivationContext, assembly_info,
 153             bytes_assembly_info, &bytes_assembly_info)))
 154     {
 155         goto out;
 156     }
 157
 158     if (flags & SXS_LOOKUP_CLR_GUID_FIND_CLR_CLASS)
 159     {
 160         const struct comclassredirect_data *redirect_data = guid_info.lpData;
 161         const struct clrclass_data *class_data;
 162
 163         class_data = (void *)((char *)redirect_data + redirect_data->clrdata_offset);
 164         ptr_name = (char *)class_data + class_data->name_offset;
 165         ptr_version = (char *)class_data + class_data->version_offset;
 166         len_name = class_data->name_len + sizeof(WCHAR);
 167         if (class_data->version_len)
 168             len_version = class_data->version_len + sizeof(WCHAR);
 169     }
 170     else
 171     {
 172         const struct clrsurrogate_data *surrogate = guid_info.lpData;
 173         ptr_name = (char *)surrogate + surrogate->name_offset;
 174         ptr_version = (char *)surrogate + surrogate->version_offset;
 175         len_name = surrogate->name_len + sizeof(WCHAR);
 176         if (surrogate->version_len)
 177             len_version = surrogate->version_len + sizeof(WCHAR);
 178     }
 179
 180     ptr_identity = assembly_info->lpAssemblyEncodedAssemblyIdentity;
 181     len_identity = assembly_info->ulEncodedAssemblyIdentityLength + sizeof(WCHAR);
 182
 183     *buffer_len_required = sizeof(*ret) + len_identity + len_version + len_name;
 184     if (!buffer || buffer_len < *buffer_len_required)
 185     {
 186         SetLastError(ERROR_INSUFFICIENT_BUFFER);
 187         retval = FALSE;
 188         goto out;
 189     }
 190
 191     ret->cbSize = sizeof(*ret);
 192     ret->dwFlags = flags & SXS_LOOKUP_CLR_GUID_FIND_CLR_CLASS ? SXS_GUID_INFORMATION_CLR_FLAG_IS_CLASS :
 193             SXS_GUID_INFORMATION_CLR_FLAG_IS_SURROGATE;
 194
 195     /* Copy strings into buffer */
 196     ret_strings = (char *)ret + sizeof(*ret);
 197
 198     memcpy(ret_strings, ptr_identity, len_identity);
 199     ret->pcwszAssemblyIdentity = (WCHAR *)ret_strings;
 200     ret_strings += len_identity;
 201
 202     memcpy(ret_strings, ptr_name, len_name);
 203     ret->pcwszTypeName = (WCHAR *)ret_strings;
 204     ret_strings += len_name;
 205
 206     if (len_version > 0)
 207     {
 208         memcpy(ret_strings, ptr_version, len_version);
 209         ret->pcwszRuntimeVersion = (WCHAR *)ret_strings;
 210     }
 211     else
 212         ret->pcwszRuntimeVersion = NULL;
 213
 214     SetLastError(0);
 215
 216 out:
 217     ReleaseActCtx(guid_info.hActCtx);
 218
 219     if (flags & SXS_LOOKUP_CLR_GUID_USE_ACTCTX)
 220         DeactivateActCtx(0, cookie);
 221
 222     free(assembly_info);
 223     return retval;
 224 }