dlls/msi/alter.c

   1 /*
   2  * Implementation of the Microsoft Installer (msi.dll)
   3  *
   4  * Copyright 2006 Mike McCormack
   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
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winerror.h"
  26 #include "wine/debug.h"
  27 #include "msi.h"
  28 #include "msiquery.h"
  29 #include "objbase.h"
  30 #include "objidl.h"
  31 #include "msipriv.h"
  32
  33 #include "query.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(msidb);
  36
  37 typedef struct tagMSIALTERVIEW
  38 {
  39     MSIVIEW        view;
  40     MSIDATABASE   *db;
  41     MSIVIEW       *table;
  42     column_info   *colinfo;
  43     INT hold;
  44 } MSIALTERVIEW;
  45
  46 static UINT ALTER_fetch_int( struct tagMSIVIEW *view, UINT row, UINT col, UINT *val )
  47 {
  48     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
  49
  50     TRACE("%p %d %d %p\n", av, row, col, val );
  51
  52     return ERROR_FUNCTION_FAILED;
  53 }
  54
  55 static UINT ALTER_fetch_stream( struct tagMSIVIEW *view, UINT row, UINT col, IStream **stm)
  56 {
  57     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
  58
  59     TRACE("%p %d %d %p\n", av, row, col, stm );
  60
  61     return ERROR_FUNCTION_FAILED;
  62 }
  63
  64 static UINT ITERATE_columns(MSIRECORD *row, LPVOID param)
  65 {
  66     (*(UINT *)param)++;
  67     return ERROR_SUCCESS;
  68 }
  69
  70 static BOOL check_column_exists(MSIDATABASE *db, MSIVIEW *columns, LPCWSTR table, LPCWSTR column)
  71 {
  72     MSIQUERY *view;
  73     MSIRECORD *rec;
  74     UINT r;
  75
  76     static const WCHAR query[] = {
  77         'S','E','L','E','C','T',' ','*',' ','F','R','O','M',' ',
  78         '`','_','C','o','l','u','m','n','s','`',' ','W','H','E','R','E',' ',
  79         '`','T','a','b','l','e','`','=','\'','%','s','\'',' ','A','N','D',' ',
  80         '`','N','a','m','e','`','=','\'','%','s','\'',0
  81     };
  82
  83     r = MSI_OpenQuery(db, &view, query, table, column);
  84     if (r != ERROR_SUCCESS)
  85         return FALSE;
  86
  87     r = MSI_ViewExecute(view, NULL);
  88     if (r != ERROR_SUCCESS)
  89         goto done;
  90
  91     r = MSI_ViewFetch(view, &rec);
  92     if (r == ERROR_SUCCESS)
  93         msiobj_release(&rec->hdr);
  94
  95 done:
  96     msiobj_release(&view->hdr);
  97     return (r == ERROR_SUCCESS);
  98 }
  99
 100 static UINT alter_add_column(MSIALTERVIEW *av)
 101 {
 102     UINT r, colnum = 1;
 103     MSIQUERY *view;
 104     MSIVIEW *columns;
 105
 106     static const WCHAR szColumns[] = {'_','C','o','l','u','m','n','s',0};
 107     static const WCHAR query[] = {
 108         'S','E','L','E','C','T',' ','*',' ','F','R','O','M',' ',
 109         '`','_','C','o','l','u','m','n','s','`',' ','W','H','E','R','E',' ',
 110         '`','T','a','b','l','e','`','=','\'','%','s','\'',' ','O','R','D','E','R',' ',
 111         'B','Y',' ','`','N','u','m','b','e','r','`',0
 112     };
 113
 114     r = TABLE_CreateView(av->db, szColumns, &columns);
 115     if (r != ERROR_SUCCESS)
 116         return r;
 117
 118     if (check_column_exists(av->db, columns, av->colinfo->table, av->colinfo->column))
 119         return ERROR_BAD_QUERY_SYNTAX;
 120
 121     r = MSI_OpenQuery(av->db, &view, query, av->colinfo->table, av->colinfo->column);
 122     if (r == ERROR_SUCCESS)
 123     {
 124         r = MSI_IterateRecords(view, NULL, ITERATE_columns, &colnum);
 125         msiobj_release(&view->hdr);
 126     }
 127
 128     r = columns->ops->add_column(columns, av->colinfo->table,
 129                                  colnum, av->colinfo->column,
 130                                  av->colinfo->type);
 131
 132     msiobj_release(&columns->hdr);
 133     return r;
 134 }
 135
 136 static UINT ALTER_execute( struct tagMSIVIEW *view, MSIRECORD *record )
 137 {
 138     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
 139
 140     TRACE("%p %p\n", av, record);
 141
 142     if (av->hold == 1)
 143         av->table->ops->add_ref(av->table);
 144     else if (av->hold == -1)
 145         av->table->ops->release(av->table);
 146     else
 147         return alter_add_column(av);
 148
 149     return ERROR_SUCCESS;
 150 }
 151
 152 static UINT ALTER_close( struct tagMSIVIEW *view )
 153 {
 154     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
 155
 156     TRACE("%p\n", av );
 157
 158     return ERROR_SUCCESS;
 159 }
 160
 161 static UINT ALTER_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
 162 {
 163     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
 164
 165     TRACE("%p %p %p\n", av, rows, cols );
 166
 167     return ERROR_FUNCTION_FAILED;
 168 }
 169
 170 static UINT ALTER_get_column_info( struct tagMSIVIEW *view,
 171                 UINT n, LPWSTR *name, UINT *type )
 172 {
 173     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
 174
 175     TRACE("%p %d %p %p\n", av, n, name, type );
 176
 177     return ERROR_FUNCTION_FAILED;
 178 }
 179
 180 static UINT ALTER_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
 181                 MSIRECORD *rec )
 182 {
 183     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
 184
 185     TRACE("%p %d %p\n", av, eModifyMode, rec );
 186
 187     return ERROR_FUNCTION_FAILED;
 188 }
 189
 190 static UINT ALTER_delete( struct tagMSIVIEW *view )
 191 {
 192     MSIALTERVIEW *av = (MSIALTERVIEW*)view;
 193
 194     TRACE("%p\n", av );
 195     msi_free( av );
 196     av->table->ops->delete( av->table );
 197
 198     return ERROR_SUCCESS;
 199 }
 200
 201 static UINT ALTER_find_matching_rows( struct tagMSIVIEW *view, UINT col,
 202     UINT val, UINT *row, MSIITERHANDLE *handle )
 203 {
 204     TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
 205
 206     return ERROR_FUNCTION_FAILED;
 207 }
 208
 209 static const MSIVIEWOPS alter_ops =
 210 {
 211     ALTER_fetch_int,
 212     ALTER_fetch_stream,
 213     NULL,
 214     NULL,
 215     NULL,
 216     ALTER_execute,
 217     ALTER_close,
 218     ALTER_get_dimensions,
 219     ALTER_get_column_info,
 220     ALTER_modify,
 221     ALTER_delete,
 222     ALTER_find_matching_rows,
 223     NULL,
 224     NULL,
 225     NULL,
 226 };
 227
 228 UINT ALTER_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR name, column_info *colinfo, int hold )
 229 {
 230     MSIALTERVIEW *av;
 231     UINT r;
 232
 233     TRACE("%p %s %d\n", view, debugstr_w(name), hold );
 234
 235     av = msi_alloc_zero( sizeof *av );
 236     if( !av )
 237         return ERROR_FUNCTION_FAILED;
 238
 239     r = TABLE_CreateView( db, name, &av->table );
 240     if (r != ERROR_SUCCESS || !av->table)
 241         return r;
 242
 243     if (colinfo)
 244         colinfo->table = name;
 245
 246     /* fill the structure */
 247     av->view.ops = &alter_ops;
 248     av->db = db;
 249     av->hold = hold;
 250     av->colinfo = colinfo;
 251
 252     *view = &av->view;
 253
 254     return ERROR_SUCCESS;
 255 }