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 ALTER_get_row( struct tagMSIVIEW *view, UINT row, MSIRECORD **rec )
65 {
66 MSIALTERVIEW *av = (MSIALTERVIEW*)view;
67
68 TRACE("%p %d %p\n", av, row, rec );
69
70 return av->table->ops->get_row(av->table, row, rec);
71 }
72
73 static UINT ITERATE_columns(MSIRECORD *row, LPVOID param)
74 {
75 (*(UINT *)param)++;
76 return ERROR_SUCCESS;
77 }
78
79 static BOOL check_column_exists(MSIDATABASE *db, LPCWSTR table, LPCWSTR column)
80 {
81 MSIQUERY *view;
82 MSIRECORD *rec;
83 UINT r;
84
85 static const WCHAR query[] = {
86 'S','E','L','E','C','T',' ','*',' ','F','R','O','M',' ',
87 '`','_','C','o','l','u','m','n','s','`',' ','W','H','E','R','E',' ',
88 '`','T','a','b','l','e','`','=','\'','%','s','\'',' ','A','N','D',' ',
89 '`','N','a','m','e','`','=','\'','%','s','\'',0
90 };
91
92 r = MSI_OpenQuery(db, &view, query, table, column);
93 if (r != ERROR_SUCCESS)
94 return FALSE;
95
96 r = MSI_ViewExecute(view, NULL);
97 if (r != ERROR_SUCCESS)
98 goto done;
99
100 r = MSI_ViewFetch(view, &rec);
101 if (r == ERROR_SUCCESS)
102 msiobj_release(&rec->hdr);
103
104 done:
105 msiobj_release(&view->hdr);
106 return (r == ERROR_SUCCESS);
107 }
108
109 static UINT alter_add_column(MSIALTERVIEW *av)
110 {
111 UINT r, colnum = 1;
112 MSIQUERY *view;
113 MSIVIEW *columns;
114
115 static const WCHAR szColumns[] = {'_','C','o','l','u','m','n','s',0};
116 static const WCHAR query[] = {
117 'S','E','L','E','C','T',' ','*',' ','F','R','O','M',' ',
118 '`','_','C','o','l','u','m','n','s','`',' ','W','H','E','R','E',' ',
119 '`','T','a','b','l','e','`','=','\'','%','s','\'',' ','O','R','D','E','R',' ',
120 'B','Y',' ','`','N','u','m','b','e','r','`',0
121 };
122
123 r = TABLE_CreateView(av->db, szColumns, &columns);
124 if (r != ERROR_SUCCESS)
125 return r;
126
127 if (check_column_exists(av->db, av->colinfo->table, av->colinfo->column))
128 return ERROR_BAD_QUERY_SYNTAX;
129
130 r = MSI_OpenQuery(av->db, &view, query, av->colinfo->table, av->colinfo->column);
131 if (r == ERROR_SUCCESS)
132 {
133 r = MSI_IterateRecords(view, NULL, ITERATE_columns, &colnum);
134 msiobj_release(&view->hdr);
135 }
136
137 r = columns->ops->add_column(columns, av->colinfo->table,
138 colnum, av->colinfo->column,
139 av->colinfo->type, (av->hold == 1));
140
141 columns->ops->delete(columns);
142 return r;
143 }
144
145 static UINT ALTER_execute( struct tagMSIVIEW *view, MSIRECORD *record )
146 {
147 MSIALTERVIEW *av = (MSIALTERVIEW*)view;
148 UINT ref;
149
150 TRACE("%p %p\n", av, record);
151
152 if (av->hold == 1)
153 av->table->ops->add_ref(av->table);
154 else if (av->hold == -1)
155 {
156 ref = av->table->ops->release(av->table);
157 if (ref == 0)
158 av->table = NULL;
159 }
160
161 if (av->colinfo)
162 return alter_add_column(av);
163
164 return ERROR_SUCCESS;
165 }
166
167 static UINT ALTER_close( struct tagMSIVIEW *view )
168 {
169 MSIALTERVIEW *av = (MSIALTERVIEW*)view;
170
171 TRACE("%p\n", av );
172
173 return ERROR_SUCCESS;
174 }
175
176 static UINT ALTER_get_dimensions( struct tagMSIVIEW *view, UINT *rows, UINT *cols )
177 {
178 MSIALTERVIEW *av = (MSIALTERVIEW*)view;
179
180 TRACE("%p %p %p\n", av, rows, cols );
181
182 return ERROR_FUNCTION_FAILED;
183 }
184
185 static UINT ALTER_get_column_info( struct tagMSIVIEW *view,
186 UINT n, LPWSTR *name, UINT *type, BOOL *temporary,
187 LPWSTR *table_name)
188 {
189 MSIALTERVIEW *av = (MSIALTERVIEW*)view;
190
191 TRACE("%p %d %p %p %p %p\n", av, n, name, type, temporary, table_name );
192
193 return ERROR_FUNCTION_FAILED;
194 }
195
196 static UINT ALTER_modify( struct tagMSIVIEW *view, MSIMODIFY eModifyMode,
197 MSIRECORD *rec, UINT row )
198 {
199 MSIALTERVIEW *av = (MSIALTERVIEW*)view;
200
201 TRACE("%p %d %p\n", av, eModifyMode, rec );
202
203 return ERROR_FUNCTION_FAILED;
204 }
205
206 static UINT ALTER_delete( struct tagMSIVIEW *view )
207 {
208 MSIALTERVIEW *av = (MSIALTERVIEW*)view;
209
210 TRACE("%p\n", av );
211 if (av->table)
212 av->table->ops->delete( av->table );
213 msi_free( av );
214
215 return ERROR_SUCCESS;
216 }
217
218 static UINT ALTER_find_matching_rows( struct tagMSIVIEW *view, UINT col,
219 UINT val, UINT *row, MSIITERHANDLE *handle )
220 {
221 TRACE("%p, %d, %u, %p\n", view, col, val, *handle);
222
223 return ERROR_FUNCTION_FAILED;
224 }
225
226 static const MSIVIEWOPS alter_ops =
227 {
228 ALTER_fetch_int,
229 ALTER_fetch_stream,
230 ALTER_get_row,
231 NULL,
232 NULL,
233 NULL,
234 ALTER_execute,
235 ALTER_close,
236 ALTER_get_dimensions,
237 ALTER_get_column_info,
238 ALTER_modify,
239 ALTER_delete,
240 ALTER_find_matching_rows,
241 NULL,
242 NULL,
243 NULL,
244 NULL,
245 NULL,
246 NULL,
247 };
248
249 UINT ALTER_CreateView( MSIDATABASE *db, MSIVIEW **view, LPCWSTR name, column_info *colinfo, int hold )
250 {
251 MSIALTERVIEW *av;
252 UINT r;
253
254 TRACE("%p %p %s %d\n", view, colinfo, debugstr_w(name), hold );
255
256 av = msi_alloc_zero( sizeof *av );
257 if( !av )
258 return ERROR_FUNCTION_FAILED;
259
260 r = TABLE_CreateView( db, name, &av->table );
261 if (r != ERROR_SUCCESS)
262 {
263 msi_free( av );
264 return r;
265 }
266
267 if (colinfo)
268 colinfo->table = name;
269
270 /* fill the structure */
271 av->view.ops = &alter_ops;
272 av->db = db;
273 av->hold = hold;
274 av->colinfo = colinfo;
275
276 *view = &av->view;
277
278 return ERROR_SUCCESS;
279 }
280
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