1 /*
2 *
3 * Copyright (c) 1997 Metro Link Incorporated
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
19 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
20 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Except as contained in this notice, the name of the Metro Link shall not be
24 * used in advertising or otherwise to promote the sale, use or other dealings
25 * in this Software without prior written authorization from Metro Link.
26 *
27 */
28 /*
29 * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
30 *
31 * Permission is hereby granted, free of charge, to any person obtaining a
32 * copy of this software and associated documentation files (the "Software"),
33 * to deal in the Software without restriction, including without limitation
34 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
35 * and/or sell copies of the Software, and to permit persons to whom the
36 * Software is furnished to do so, subject to the following conditions:
37 *
38 * The above copyright notice and this permission notice shall be included in
39 * all copies or substantial portions of the Software.
40 *
41 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
42 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
43 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
44 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
45 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
46 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
47 * OTHER DEALINGS IN THE SOFTWARE.
48 *
49 * Except as contained in this notice, the name of the copyright holder(s)
50 * and author(s) shall not be used in advertising or otherwise to promote
51 * the sale, use or other dealings in this Software without prior written
52 * authorization from the copyright holder(s) and author(s).
53 */
54
55 #ifdef HAVE_XORG_CONFIG_H
56 #include <xorg-config.h>
57 #endif
58
59 #include "xf86Config.h"
60 #include "xf86Parser.h"
61 #include "xf86tokens.h"
62 #include "Configint.h"
63
64
65 static const xf86ConfigSymTabRec TopLevelTab[] = {
66 {SECTION, "section"},
67 {-1, ""},
68 };
69
70 #define CLEANUP xf86freeConfig
71
72 /*
73 * This function resolves name references and reports errors if the named
74 * objects cannot be found.
75 */
76 static int
xf86validateConfig(XF86ConfigPtr p)77 xf86validateConfig(XF86ConfigPtr p)
78 {
79 if (!xf86validateScreen(p))
80 return FALSE;
81 if (!xf86validateInput(p))
82 return FALSE;
83 if (!xf86validateLayout(p))
84 return FALSE;
85
86 return TRUE;
87 }
88
89 XF86ConfigPtr
xf86readConfigFile(void)90 xf86readConfigFile(void)
91 {
92 int token;
93 XF86ConfigPtr ptr = NULL;
94
95 if ((ptr = xf86allocateConfig()) == NULL) {
96 return NULL;
97 }
98
99 while ((token = xf86getToken(TopLevelTab)) != EOF_TOKEN) {
100 switch (token) {
101 case COMMENT:
102 ptr->conf_comment = xf86addComment(ptr->conf_comment, xf86_lex_val.str);
103 break;
104 case SECTION:
105 if (xf86getSubToken(&(ptr->conf_comment)) != STRING) {
106 xf86parseError(QUOTE_MSG, "Section");
107 CLEANUP(ptr);
108 return NULL;
109 }
110 xf86setSection(xf86_lex_val.str);
111 if (xf86nameCompare(xf86_lex_val.str, "files") == 0) {
112 free(xf86_lex_val.str);
113 xf86_lex_val.str = NULL;
114 HANDLE_RETURN(conf_files, xf86parseFilesSection());
115 }
116 else if (xf86nameCompare(xf86_lex_val.str, "serverflags") == 0) {
117 free(xf86_lex_val.str);
118 xf86_lex_val.str = NULL;
119 HANDLE_RETURN(conf_flags, xf86parseFlagsSection());
120 }
121 else if (xf86nameCompare(xf86_lex_val.str, "pointer") == 0) {
122 free(xf86_lex_val.str);
123 xf86_lex_val.str = NULL;
124 HANDLE_LIST(conf_input_lst, xf86parsePointerSection,
125 XF86ConfInputPtr);
126 }
127 else if (xf86nameCompare(xf86_lex_val.str, "videoadaptor") == 0) {
128 free(xf86_lex_val.str);
129 xf86_lex_val.str = NULL;
130 HANDLE_LIST(conf_videoadaptor_lst, xf86parseVideoAdaptorSection,
131 XF86ConfVideoAdaptorPtr);
132 }
133 else if (xf86nameCompare(xf86_lex_val.str, "device") == 0) {
134 free(xf86_lex_val.str);
135 xf86_lex_val.str = NULL;
136 HANDLE_LIST(conf_device_lst, xf86parseDeviceSection,
137 XF86ConfDevicePtr);
138 }
139 else if (xf86nameCompare(xf86_lex_val.str, "monitor") == 0) {
140 free(xf86_lex_val.str);
141 xf86_lex_val.str = NULL;
142 HANDLE_LIST(conf_monitor_lst, xf86parseMonitorSection,
143 XF86ConfMonitorPtr);
144 }
145 else if (xf86nameCompare(xf86_lex_val.str, "modes") == 0) {
146 free(xf86_lex_val.str);
147 xf86_lex_val.str = NULL;
148 HANDLE_LIST(conf_modes_lst, xf86parseModesSection,
149 XF86ConfModesPtr);
150 }
151 else if (xf86nameCompare(xf86_lex_val.str, "screen") == 0) {
152 free(xf86_lex_val.str);
153 xf86_lex_val.str = NULL;
154 HANDLE_LIST(conf_screen_lst, xf86parseScreenSection,
155 XF86ConfScreenPtr);
156 }
157 else if (xf86nameCompare(xf86_lex_val.str, "inputdevice") == 0) {
158 free(xf86_lex_val.str);
159 xf86_lex_val.str = NULL;
160 HANDLE_LIST(conf_input_lst, xf86parseInputSection,
161 XF86ConfInputPtr);
162 }
163 else if (xf86nameCompare(xf86_lex_val.str, "inputclass") == 0) {
164 free(xf86_lex_val.str);
165 xf86_lex_val.str = NULL;
166 HANDLE_LIST(conf_inputclass_lst,
167 xf86parseInputClassSection, XF86ConfInputClassPtr);
168 }
169 else if (xf86nameCompare(xf86_lex_val.str, "outputclass") == 0) {
170 free(xf86_lex_val.str);
171 xf86_lex_val.str = NULL;
172 HANDLE_LIST(conf_outputclass_lst, xf86parseOutputClassSection,
173 XF86ConfOutputClassPtr);
174 }
175 else if (xf86nameCompare(xf86_lex_val.str, "module") == 0) {
176 free(xf86_lex_val.str);
177 xf86_lex_val.str = NULL;
178 HANDLE_RETURN(conf_modules, xf86parseModuleSection());
179 }
180 else if (xf86nameCompare(xf86_lex_val.str, "serverlayout") == 0) {
181 free(xf86_lex_val.str);
182 xf86_lex_val.str = NULL;
183 HANDLE_LIST(conf_layout_lst, xf86parseLayoutSection,
184 XF86ConfLayoutPtr);
185 }
186 else if (xf86nameCompare(xf86_lex_val.str, "vendor") == 0) {
187 free(xf86_lex_val.str);
188 xf86_lex_val.str = NULL;
189 HANDLE_LIST(conf_vendor_lst, xf86parseVendorSection,
190 XF86ConfVendorPtr);
191 }
192 else if (xf86nameCompare(xf86_lex_val.str, "dri") == 0) {
193 free(xf86_lex_val.str);
194 xf86_lex_val.str = NULL;
195 HANDLE_RETURN(conf_dri, xf86parseDRISection());
196 }
197 else if (xf86nameCompare(xf86_lex_val.str, "extensions") == 0) {
198 free(xf86_lex_val.str);
199 xf86_lex_val.str = NULL;
200 HANDLE_RETURN(conf_extensions, xf86parseExtensionsSection());
201 }
202 else {
203 free(xf86_lex_val.str);
204 xf86_lex_val.str = NULL;
205 Error(INVALID_SECTION_MSG, xf86tokenString());
206 }
207 break;
208 default:
209 free(xf86_lex_val.str);
210 xf86_lex_val.str = NULL;
211 Error(INVALID_KEYWORD_MSG, xf86tokenString());
212 }
213 }
214
215 if (xf86validateConfig(ptr))
216 return ptr;
217 else {
218 CLEANUP(ptr);
219 return NULL;
220 }
221 }
222
223 #undef CLEANUP
224
225 /*
226 * adds an item to the end of the linked list. Any record whose first field
227 * is a GenericListRec can be cast to this type and used with this function.
228 * A pointer to the head of the list is returned to handle the addition of
229 * the first item.
230 */
231 GenericListPtr
xf86addListItem(GenericListPtr head,GenericListPtr new)232 xf86addListItem(GenericListPtr head, GenericListPtr new)
233 {
234 GenericListPtr p = head;
235 GenericListPtr last = NULL;
236
237 while (p) {
238 last = p;
239 p = p->next;
240 }
241
242 if (last) {
243 last->next = new;
244 return head;
245 }
246 else
247 return new;
248 }
249
250 /*
251 * Test if one chained list contains the other.
252 * In this case both list have the same endpoint (provided they don't loop)
253 */
254 int
xf86itemNotSublist(GenericListPtr list_1,GenericListPtr list_2)255 xf86itemNotSublist(GenericListPtr list_1, GenericListPtr list_2)
256 {
257 GenericListPtr p = list_1;
258 GenericListPtr last_1 = NULL, last_2 = NULL;
259
260 while (p) {
261 last_1 = p;
262 p = p->next;
263 }
264
265 p = list_2;
266 while (p) {
267 last_2 = p;
268 p = p->next;
269 }
270
271 return (!(last_1 == last_2));
272 }
273
274 /*
275 * Conditionally allocate config struct, but only allocate it
276 * if it's not already there. In either event, return the pointer
277 * to the global config struct.
278 */
xf86allocateConfig(void)279 XF86ConfigPtr xf86allocateConfig(void)
280 {
281 if (!xf86configptr) {
282 xf86configptr = calloc(1, sizeof(XF86ConfigRec));
283 }
284 return xf86configptr;
285 }
286
287 void
xf86freeConfig(XF86ConfigPtr p)288 xf86freeConfig(XF86ConfigPtr p)
289 {
290 if (p == NULL)
291 return;
292
293 xf86freeFiles(p->conf_files);
294 xf86freeModules(p->conf_modules);
295 xf86freeFlags(p->conf_flags);
296 xf86freeMonitorList(p->conf_monitor_lst);
297 xf86freeModesList(p->conf_modes_lst);
298 xf86freeVideoAdaptorList(p->conf_videoadaptor_lst);
299 xf86freeDeviceList(p->conf_device_lst);
300 xf86freeScreenList(p->conf_screen_lst);
301 xf86freeLayoutList(p->conf_layout_lst);
302 xf86freeInputList(p->conf_input_lst);
303 xf86freeVendorList(p->conf_vendor_lst);
304 xf86freeDRI(p->conf_dri);
305 xf86freeExtensions(p->conf_extensions);
306 TestFree(p->conf_comment);
307
308 free(p);
309 }
310