| 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 "xf86Parser.h" |
| 60 | #include "xf86tokens.h" |
| 61 | #include "Configint.h" |
| 62 | |
| 63 | extern LexRec val; |
| 64 | |
| 65 | static 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 |
| 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 |
| 90 | xf86readConfigFile(void) |
| 91 | { |
| 92 | int token; |
| 93 | XF86ConfigPtr ptr = NULL; |
| 94 | |
| 95 | if ((ptr = calloc(1, sizeof(XF86ConfigRec))) == 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, 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(val.str); |
| 111 | if (xf86nameCompare(val.str, "files") == 0) { |
| 112 | free(val.str); |
| 113 | val.str = NULL; |
| 114 | HANDLE_RETURN(conf_files, xf86parseFilesSection()); |
| 115 | } |
| 116 | else if (xf86nameCompare(val.str, "serverflags") == 0) { |
| 117 | free(val.str); |
| 118 | val.str = NULL; |
| 119 | HANDLE_RETURN(conf_flags, xf86parseFlagsSection()); |
| 120 | } |
| 121 | else if (xf86nameCompare(val.str, "pointer") == 0) { |
| 122 | free(val.str); |
| 123 | val.str = NULL; |
| 124 | HANDLE_LIST(conf_input_lst, xf86parsePointerSection, |
| 125 | XF86ConfInputPtr); |
| 126 | } |
| 127 | else if (xf86nameCompare(val.str, "videoadaptor") == 0) { |
| 128 | free(val.str); |
| 129 | val.str = NULL; |
| 130 | HANDLE_LIST(conf_videoadaptor_lst, xf86parseVideoAdaptorSection, |
| 131 | XF86ConfVideoAdaptorPtr); |
| 132 | } |
| 133 | else if (xf86nameCompare(val.str, "device") == 0) { |
| 134 | free(val.str); |
| 135 | val.str = NULL; |
| 136 | HANDLE_LIST(conf_device_lst, xf86parseDeviceSection, |
| 137 | XF86ConfDevicePtr); |
| 138 | } |
| 139 | else if (xf86nameCompare(val.str, "monitor") == 0) { |
| 140 | free(val.str); |
| 141 | val.str = NULL; |
| 142 | HANDLE_LIST(conf_monitor_lst, xf86parseMonitorSection, |
| 143 | XF86ConfMonitorPtr); |
| 144 | } |
| 145 | else if (xf86nameCompare(val.str, "modes") == 0) { |
| 146 | free(val.str); |
| 147 | val.str = NULL; |
| 148 | HANDLE_LIST(conf_modes_lst, xf86parseModesSection, |
| 149 | XF86ConfModesPtr); |
| 150 | } |
| 151 | else if (xf86nameCompare(val.str, "screen") == 0) { |
| 152 | free(val.str); |
| 153 | val.str = NULL; |
| 154 | HANDLE_LIST(conf_screen_lst, xf86parseScreenSection, |
| 155 | XF86ConfScreenPtr); |
| 156 | } |
| 157 | else if (xf86nameCompare(val.str, "inputdevice") == 0) { |
| 158 | free(val.str); |
| 159 | val.str = NULL; |
| 160 | HANDLE_LIST(conf_input_lst, xf86parseInputSection, |
| 161 | XF86ConfInputPtr); |
| 162 | } |
| 163 | else if (xf86nameCompare(val.str, "inputclass") == 0) { |
| 164 | free(val.str); |
| 165 | val.str = NULL; |
| 166 | HANDLE_LIST(conf_inputclass_lst, |
| 167 | xf86parseInputClassSection, XF86ConfInputClassPtr); |
| 168 | } |
| 169 | else if (xf86nameCompare(val.str, "module") == 0) { |
| 170 | free(val.str); |
| 171 | val.str = NULL; |
| 172 | HANDLE_RETURN(conf_modules, xf86parseModuleSection()); |
| 173 | } |
| 174 | else if (xf86nameCompare(val.str, "serverlayout") == 0) { |
| 175 | free(val.str); |
| 176 | val.str = NULL; |
| 177 | HANDLE_LIST(conf_layout_lst, xf86parseLayoutSection, |
| 178 | XF86ConfLayoutPtr); |
| 179 | } |
| 180 | else if (xf86nameCompare(val.str, "vendor") == 0) { |
| 181 | free(val.str); |
| 182 | val.str = NULL; |
| 183 | HANDLE_LIST(conf_vendor_lst, xf86parseVendorSection, |
| 184 | XF86ConfVendorPtr); |
| 185 | } |
| 186 | else if (xf86nameCompare(val.str, "dri") == 0) { |
| 187 | free(val.str); |
| 188 | val.str = NULL; |
| 189 | HANDLE_RETURN(conf_dri, xf86parseDRISection()); |
| 190 | } |
| 191 | else if (xf86nameCompare(val.str, "extensions") == 0) { |
| 192 | free(val.str); |
| 193 | val.str = NULL; |
| 194 | HANDLE_RETURN(conf_extensions, xf86parseExtensionsSection()); |
| 195 | } |
| 196 | else { |
| 197 | free(val.str); |
| 198 | val.str = NULL; |
| 199 | Error(INVALID_SECTION_MSG, xf86tokenString()); |
| 200 | } |
| 201 | break; |
| 202 | default: |
| 203 | free(val.str); |
| 204 | val.str = NULL; |
| 205 | Error(INVALID_KEYWORD_MSG, xf86tokenString()); |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | if (xf86validateConfig(ptr)) |
| 210 | return ptr; |
| 211 | else { |
| 212 | CLEANUP(ptr); |
| 213 | return NULL; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | #undef CLEANUP |
| 218 | |
| 219 | /* |
| 220 | * adds an item to the end of the linked list. Any record whose first field |
| 221 | * is a GenericListRec can be cast to this type and used with this function. |
| 222 | * A pointer to the head of the list is returned to handle the addition of |
| 223 | * the first item. |
| 224 | */ |
| 225 | GenericListPtr |
| 226 | xf86addListItem(GenericListPtr head, GenericListPtr new) |
| 227 | { |
| 228 | GenericListPtr p = head; |
| 229 | GenericListPtr last = NULL; |
| 230 | |
| 231 | while (p) { |
| 232 | last = p; |
| 233 | p = p->next; |
| 234 | } |
| 235 | |
| 236 | if (last) { |
| 237 | last->next = new; |
| 238 | return head; |
| 239 | } |
| 240 | else |
| 241 | return new; |
| 242 | } |
| 243 | |
| 244 | /* |
| 245 | * Test if one chained list contains the other. |
| 246 | * In this case both list have the same endpoint (provided they don't loop) |
| 247 | */ |
| 248 | int |
| 249 | xf86itemNotSublist(GenericListPtr list_1, GenericListPtr list_2) |
| 250 | { |
| 251 | GenericListPtr p = list_1; |
| 252 | GenericListPtr last_1 = NULL, last_2 = NULL; |
| 253 | |
| 254 | while (p) { |
| 255 | last_1 = p; |
| 256 | p = p->next; |
| 257 | } |
| 258 | |
| 259 | p = list_2; |
| 260 | while (p) { |
| 261 | last_2 = p; |
| 262 | p = p->next; |
| 263 | } |
| 264 | |
| 265 | return (!(last_1 == last_2)); |
| 266 | } |
| 267 | |
| 268 | void |
| 269 | xf86freeConfig(XF86ConfigPtr p) |
| 270 | { |
| 271 | if (p == NULL) |
| 272 | return; |
| 273 | |
| 274 | xf86freeFiles(p->conf_files); |
| 275 | xf86freeModules(p->conf_modules); |
| 276 | xf86freeFlags(p->conf_flags); |
| 277 | xf86freeMonitorList(p->conf_monitor_lst); |
| 278 | xf86freeModesList(p->conf_modes_lst); |
| 279 | xf86freeVideoAdaptorList(p->conf_videoadaptor_lst); |
| 280 | xf86freeDeviceList(p->conf_device_lst); |
| 281 | xf86freeScreenList(p->conf_screen_lst); |
| 282 | xf86freeLayoutList(p->conf_layout_lst); |
| 283 | xf86freeInputList(p->conf_input_lst); |
| 284 | xf86freeVendorList(p->conf_vendor_lst); |
| 285 | xf86freeDRI(p->conf_dri); |
| 286 | xf86freeExtensions(p->conf_extensions); |
| 287 | TestFree(p->conf_comment); |
| 288 | |
| 289 | free(p); |
| 290 | } |