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1/*␊
2 * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.␊
3 *␊
4 * @APPLE_LICENSE_HEADER_START@␊
5 * ␊
6 * Portions Copyright (c) 1999-2003 Apple Computer, Inc. All Rights␊
7 * Reserved. This file contains Original Code and/or Modifications of␊
8 * Original Code as defined in and that are subject to the Apple Public␊
9 * Source License Version 2.0 (the "License"). You may not use this file␊
10 * except in compliance with the License. Please obtain a copy of the␊
11 * License at http://www.apple.com/publicsource and read it before using␊
12 * this file.␊
13 * ␊
14 * The Original Code and all software distributed under the License are␊
15 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊
16 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊
17 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊
18 * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT. Please see the␊
19 * License for the specific language governing rights and limitations␊
20 * under the License.␊
21 * ␊
22 * @APPLE_LICENSE_HEADER_END@␊
23 */␊
24/*␊
25 * Copyright 1993 NeXT, Inc.␊
26 * All rights reserved.␊
27 */␊
28␊
29#include "libsaio.h"␊
30#include "bootstruct.h"␊
31#include "platform.h"␊
32#include "xml.h"␊
33␊
34static char * AllocInitStringWithLength(const char * oldString, int len);␊
35static char * AllocInitZeroEndedStringWithLength(const char * oldString, int len);␊
36␊
37#ifndef MIN␊
38#define MIN(x, y) ((x) < (y) ? (x) : (y))␊
39#endif␊
40␊
41#define ASSERT_CONFIG \␊
42if (config == DEFAULT_BOOT_CONFIG) \␊
43config = &bootInfo->bootConfig ; \␊
44else if (config == DEFAULT_SYSTEM_CONFIG) \␊
45config = &bootInfo->SystemConfig ; \␊
46else if (config == DEFAULT_OVERRIDE_CONFIG) \␊
47config = &bootInfo->overrideConfig ; \␊
48else if (config == DEFAULT_SMBIOS_CONFIG) \␊
49config = &bootInfo->smbiosConfig ; \␊
50else if (config == DEFAULT_HELPER_CONFIG) \␊
51config = &bootInfo->helperConfig ; ␊
52␊
53#if UNUSED␊
54/*␊
55 * Compare a string to a key with quoted characters␊
56 */␊
57static inline int␊
58keyncmp(const char *str, const char *key, int n)␊
59{␊
60 int c;␊
61 while (n--) {␊
62␉␉c = *key++;␊
63␉␉if (c == '\\') {␊
64␉␉␉switch(c = *key++) {␊
65␉␉␉␉case 'n':␊
66␉␉␉␉␉c = '\n';␊
67␉␉␉␉␉break;␊
68␉␉␉␉case 'r':␊
69␉␉␉␉␉c = '\r';␊
70␉␉␉␉␉break;␊
71␉␉␉␉case 't':␊
72␉␉␉␉␉c = '\t';␊
73␉␉␉␉␉break;␊
74␉␉␉␉default:␊
75␉␉␉␉␉break;␊
76␉␉␉}␊
77␉␉} else if (c == '\"') {␊
78␉␉␉/* Premature end of key */␊
79␉␉␉return 1;␊
80␉␉}␊
81␉␉if (c != *str++) {␊
82␉␉␉return 1;␊
83␉␉}␊
84 }␊
85 return 0;␊
86}␊
87␊
88static void eatThru(char val, const char **table_p)␊
89{␊
90␉register const char *table = *table_p;␊
91␉register bool found = false;␊
92␉␊
93␉while (*table && !found)␊
94␉{␊
95␉␉if (*table == '\\') table += 2;␊
96␉␉else␊
97␉␉{␊
98␉␉␉if (*table == val) found = true;␊
99␉␉␉table++;␊
100␉␉}␊
101␉}␊
102␉*table_p = table;␊
103}␊
104␊
105/* Remove key and its associated value from the table. */␊
106␊
107bool␊
108removeKeyFromTable(const char *key, char *table)␊
109{␊
110 register int len;␊
111 register char *tab;␊
112 char *buf;␊
113␉␊
114 len = strlen(key);␊
115 tab = (char *)table;␊
116 buf = (char *)malloc(len + 3);␊
117␉␊
118 sprintf(buf, "\"%s\"", key);␊
119 len = strlen(buf);␊
120␉␊
121 while(*tab) {␊
122 if(strncmp(buf, tab, len) == 0) {␊
123 char c;␊
124␉␉␉␊
125 while((c = *(tab + len)) != ';') {␊
126 if(c == 0) {␊
127 len = -1;␊
128 goto out;␊
129 }␊
130 len++;␊
131 }␊
132 len++;␊
133 if(*(tab + len) == '\n') len++;␊
134 goto out;␊
135 }␊
136 tab++;␊
137 }␊
138 len = -1;␊
139out:␊
140 free(buf);␊
141␉␊
142 if(len == -1) return false;␊
143␉␊
144 while((*tab = *(tab + len))) {␊
145 tab++;␊
146 }␊
147␉␊
148 return true;␊
149}␊
150␊
151char *␊
152newStringFromList(␊
153␉␉␉␉ char **list,␊
154␉␉␉␉ int *size␊
155␉␉␉␉ )␊
156{␊
157 char *begin = *list, *end;␊
158 char *newstr;␊
159 int newsize = *size;␊
160 int bufsize;␊
161 ␊
162 while (*begin && newsize && isspace(*begin)) {␊
163␉␉begin++;␊
164␉␉newsize--;␊
165 }␊
166 end = begin;␊
167 while (*end && newsize && !isspace(*end)) {␊
168␉␉end++;␊
169␉␉newsize--;␊
170 }␊
171 if (begin == end)␊
172␉␉return 0;␊
173 bufsize = end - begin + 1;␊
174 newstr = malloc(bufsize);␊
175 strlcpy(newstr, begin, bufsize);␊
176 *list = end;␊
177 *size = newsize;␊
178 return newstr;␊
179}␊
180␊
181/* ␊
182 * compress == compress escaped characters to one character␊
183 */␊
184int stringLength(const char *table, int compress)␊
185{␊
186␉int ret = 0;␊
187␉␊
188␉while (*table)␊
189␉{␊
190␉␉if (*table == '\\')␊
191␉␉{␊
192␉␉␉table += 2;␊
193␉␉␉ret += 1 + (compress ? 0 : 1);␊
194␉␉}␊
195␉␉else␊
196␉␉{␊
197␉␉␉if (*table == '\"') return ret;␊
198␉␉␉ret++;␊
199␉␉␉table++;␊
200␉␉}␊
201␉}␊
202␉return ret;␊
203}␊
204#endif␊
205␊
206bool getValueForConfigTableKey(config_file_t *config, const char *key, const char **val, int *size)␊
207{␊
208 ASSERT_CONFIG␊
209 ␊
210␉if (config->dictionary != 0 ) {␊
211␉␉// Look up key in XML dictionary␊
212␉␉TagPtr value;␊
213␉␉value = XMLGetProperty(config->dictionary, key);␊
214␉␉if (value != 0) {␊
215␉␉␉if (value->type != kTagTypeString) {␊
216␉␉␉␉error("Non-string tag '%s' found in config file\n",␊
217␉␉␉␉␉ key);␊
218␉␉␉␉return false;␊
219␉␉␉}␊
220␉␉␉*val = value->string;␊
221␉␉␉*size = strlen(value->string);␊
222␉␉␉return true;␊
223␉␉}␊
224␉} else {␊
225␉␉␊
226␉␉// Legacy plist-style table␊
227␉␉␊
228␉}␊
229␉␊
230␉return false;␊
231}␊
232␊
233#if UNUSED␊
234␊
235/*␊
236 * Returns a new malloc'ed string if one is found␊
237 * in the string table matching 'key'. Also translates␊
238 * \n escapes in the string.␊
239 */␊
240char *newStringForStringTableKey(␊
241␉␉␉␉␉␉␉␉ char *table,␊
242␉␉␉␉␉␉␉␉ char *key,␊
243␉␉␉␉␉␉␉␉ config_file_t *config␊
244␉␉␉␉␉␉␉␉ )␊
245{␊
246 const char *val;␊
247 char *newstr, *p;␊
248 int size;␊
249 ␊
250 ASSERT_CONFIG␊
251 ␊
252 if (getValueForConfigTableKey(config, key, &val, &size)) {␊
253␉␉newstr = (char *)malloc(size+1);␊
254␉␉for (p = newstr; size; size--, p++, val++) {␊
255␉␉␉if ((*p = *val) == '\\') {␊
256␉␉␉␉switch (*++val) {␊
257␉␉␉␉␉case 'r':␊
258␉␉␉␉␉␉*p = '\r';␊
259␉␉␉␉␉␉break;␊
260␉␉␉␉␉case 'n':␊
261␉␉␉␉␉␉*p = '\n';␊
262␉␉␉␉␉␉break;␊
263␉␉␉␉␉case 't':␊
264␉␉␉␉␉␉*p = '\t';␊
265␉␉␉␉␉␉break;␊
266␉␉␉␉␉default:␊
267␉␉␉␉␉␉*p = *val;␊
268␉␉␉␉␉␉break;␊
269␉␉␉␉}␊
270␉␉␉␉size--;␊
271␉␉␉}␊
272␉␉}␊
273␉␉*p = '\0';␊
274␉␉return newstr;␊
275 } else {␊
276␉␉return 0;␊
277 }␊
278}␊
279␊
280#endif␊
281␊
282char *␊
283newStringForKey(char *key, config_file_t *config)␊
284{␊
285 const char *val;␊
286 char *newstr;␊
287 int size;␊
288 ␊
289 ASSERT_CONFIG␊
290 ␊
291 if (getValueForKey(key, &val, &size, config) && size) {␊
292␉␉newstr = (char *)malloc(size + 1);␊
293␉␉strlcpy(newstr, val, size + 1);␊
294␉␉return newstr;␊
295 } else {␊
296␉␉return 0;␊
297 }␊
298}␊
299␊
300/* parse a command line␊
301 * in the form: [<argument> ...] [<option>=<value> ...]␊
302 * both <option> and <value> must be either composed of␊
303 * non-whitespace characters, or enclosed in quotes.␊
304 */␊
305␊
306static const char *getToken(const char *line, const char **begin, int *len)␊
307{␊
308 if (*line == '\"') {␊
309␉␉*begin = ++line;␊
310␉␉while (*line && *line != '\"')␊
311␉␉␉line++;␊
312␉␉*len = line++ - *begin;␊
313 } else {␊
314␉␉*begin = line;␊
315␉␉while (*line && !isspace(*line) && *line != '=')␊
316␉␉␉line++;␊
317␉␉*len = line - *begin;␊
318 }␊
319 return line;␊
320}␊
321␊
322bool getValueForBootKey(const char *line, const char *match, const char **matchval, int *len)␊
323{␊
324 const char *key, *value;␊
325 int key_len, value_len;␊
326 bool retval = false;␊
327 ␊
328 while (*line) {␊
329␉␉/* look for keyword or argument */␊
330␉␉while (isspace(*line)) line++;␊
331␉␉␊
332␉␉/* now look for '=' or whitespace */␊
333␉␉line = getToken(line, &key, &key_len);␊
334␉␉/* line now points to '=' or space */␊
335␉␉if (*line && !isspace(*line)) {␊
336␉␉␉line = getToken(++line, &value, &value_len);␊
337␉␉} else {␊
338␉␉␉value = line;␊
339␉␉␉value_len = 0;␊
340␉␉}␊
341␉␉if ((strlen(match) == key_len)␊
342␉␉␉&& strncmp(match, key, key_len) == 0) {␊
343␉␉␉*matchval = value;␊
344␉␉␉*len = value_len;␊
345␉␉␉retval = true;␊
346 /* Continue to look for this key; last one wins. */␊
347␉␉}␊
348 }␊
349 return retval;␊
350}␊
351␊
352/* Return NULL if no option has been successfully retrieved, or the string otherwise */␊
353const char * getStringForKey(const char * key, config_file_t *config)␊
354{␊
355␉static const char* value =0;␊
356␉int len=0;␊
357 ␊
358 ASSERT_CONFIG␊
359 ␊
360␉if(!getValueForKey(key, &value, &len, config)) value = 0;␊
361␉return value;␊
362}␊
363␊
364␊
365/* Returns TRUE if a value was found, FALSE otherwise.␊
366 * The boolean value of the key is stored in 'val'.␊
367 */␊
368␊
369bool getBoolForKey( const char *key, bool *result_val, config_file_t *config )␊
370{␊
371 const char *key_val;␊
372 int size;␊
373 ␊
374 ASSERT_CONFIG␊
375 ␊
376 if (getValueForKey(key, &key_val, &size, config)) {␊
377 if ( (size >= 1) && (key_val[0] == 'Y' || key_val[0] == 'y') ) {␊
378 *result_val = true;␊
379 } else {␊
380 *result_val = false;␊
381 }␊
382 return true;␊
383 }␊
384 return false;␊
385}␊
386␊
387bool getIntForKey( const char *key, int *value, config_file_t *config )␊
388{␊
389 const char *val;␊
390 int size, sum;␊
391 bool negative = false;␊
392 ␊
393 ASSERT_CONFIG␊
394 ␊
395 if (getValueForKey(key, &val, &size, config))␊
396␉{␊
397␉␉if ( size )␊
398␉␉{␊
399␉␉␉if (*val == '-')␊
400␉␉␉{␊
401␉␉␉␉negative = true;␊
402␉␉␉␉val++;␊
403␉␉␉␉size--;␊
404␉␉␉}␊
405␉␉␉␊
406␉␉␉for (sum = 0; size > 0; size--)␊
407␉␉␉{␊
408␉␉␉␉if (*val < '0' || *val > '9')␊
409␉␉␉␉␉return false;␊
410␉␉␉␉␊
411␉␉␉␉sum = (sum * 10) + (*val++ - '0');␊
412␉␉␉}␊
413␉␉␉␊
414␉␉␉if (negative)␊
415␉␉␉␉sum = -sum;␊
416␉␉␉␊
417␉␉␉*value = sum;␊
418␉␉␉return true;␊
419␉␉}␊
420␉}␊
421 return false;␊
422}␊
423␊
424/*␊
425 *␊
426 */␊
427␊
428bool getDimensionForKey( const char *key, unsigned int *value, config_file_t *config, unsigned int dimension_max, unsigned int object_size )␊
429{␊
430␉const char *val;␊
431␉␊
432 int size = 0;␊
433␉int sum = 0;␊
434 ␊
435␉bool negative = false;␊
436␉bool percentage = false;␊
437 ␊
438 ASSERT_CONFIG␊
439␉␊
440 if (getValueForKey(key, &val, &size, config))␊
441␉{␊
442␉␉if ( size )␊
443␉␉{␊
444␉␉␉if (*val == '-')␊
445␉␉␉{␊
446␉␉␉␉negative = true;␊
447␉␉␉␉val++;␊
448␉␉␉␉size--;␊
449␉␉␉}␊
450␉␉␉␊
451␉␉␉if (val[size-1] == '%')␊
452␉␉␉{␊
453␉␉␉␉percentage = true;␊
454␉␉␉␉size--;␊
455␉␉␉}␊
456␉␉␉␊
457␉␉␉// convert string to integer␊
458␉␉␉for (sum = 0; size > 0; size--)␊
459␉␉␉{␊
460␉␉␉␉if (*val < '0' || *val > '9')␊
461␉␉␉␉␉return false;␊
462␉␉␉␉␊
463␉␉␉␉sum = (sum * 10) + (*val++ - '0');␊
464␉␉␉}␊
465␉␉␉␊
466␉␉␉if (percentage)␊
467␉␉␉␉sum = ( dimension_max * sum ) / 100;␊
468␉␉␉␊
469␉␉␉// calculate offset from opposite origin␊
470␉␉␉if (negative)␊
471␉␉␉␉sum = ( ( dimension_max - object_size ) - sum );␊
472␉␉␉␊
473␉␉} else {␊
474␉␉␉␊
475␉␉␉// null value calculate center␊
476␉␉␉sum = ( dimension_max - object_size ) / 2;␊
477␉␉␉␊
478␉␉}␊
479␉␉␊
480␉␉*value = (uint16_t) sum;␊
481␉␉return true;␊
482␉}␊
483␉␊
484␉// key not found␊
485 return false;␊
486} ␊
487␊
488/*␊
489 *␉get color value from plist format #RRGGBB␊
490 */␊
491␊
492bool getColorForKey( const char *key, unsigned int *value, config_file_t *config )␊
493{␊
494 const char *val;␊
495 int size;␊
496 ␊
497 ASSERT_CONFIG␊
498 ␊
499 if (getValueForKey(key, &val, &size, config))␊
500␉{␊
501␉␉if (*val == '#')␊
502␉␉{␊
503 val++;␊
504␉␉␉*value = strtol(val, NULL, 16);␊
505␉␉␉return true;␊
506 }␊
507 }␊
508 return false;␊
509}␊
510␊
511bool getValueForKey( const char *key, const char **val, int *size, config_file_t *config )␊
512{␊
513 const char *overrideVal;␊
514 int overrideSize;␊
515 bool ret; ␊
516 ␊
517 if (getValueForBootKey(bootArgs->CommandLine, key, val, size))␊
518 return true;␊
519 ␊
520 ASSERT_CONFIG␊
521 ␊
522 ret = getValueForConfigTableKey(config, key, val, size);␊
523 ␊
524 // Try to find alternate keys in bootInfo->overrideConfig␊
525 // and prefer its values with the exceptions for␊
526 // "Kernel"="mach_kernel" and "Kernel Flags"="".␊
527 ␊
528 if (config->canOverride)␊
529 {␊
530 if (getValueForConfigTableKey(&bootInfo->overrideConfig, key, &overrideVal, &overrideSize) && overrideSize)␊
531 {␊
532 *val = overrideVal;␊
533 *size = overrideSize;␊
534 return true;␉␉␊
535 }␊
536 else if (getValueForConfigTableKey(&bootInfo->SystemConfig, key, &overrideVal, &overrideSize) && overrideSize)␊
537 {␊
538 *val = overrideVal;␊
539 *size = overrideSize;␊
540 return true;␉␉␊
541 }␊
542 else if (getValueForConfigTableKey(&bootInfo->bootConfig, key, &overrideVal, &overrideSize) && overrideSize)␊
543 {␊
544 *val = overrideVal;␊
545 *size = overrideSize;␊
546 return true;␉␉␊
547 }␊
548 }␊
549 ␊
550 return ret;␊
551}␊
552␊
553␊
554#if UNUSED␊
555void␊
556printSystemConfig(char *p1)␊
557{␊
558 char *p2 = p1, tmp;␊
559␉␊
560 while (*p1 != '\0') {␊
561␉␉while (*p2 != '\0' && *p2 != '\n') p2++;␊
562␉␉tmp = *p2;␊
563␉␉*p2 = '\0';␊
564␉␉printf("%s\n", p1);␊
565␉␉*p2 = tmp;␊
566␉␉if (tmp == '\0') break;␊
567␉␉p1 = ++p2;␊
568 }␊
569}␊
570#endif␊
571␊
572//==========================================================================␊
573// ParseXMLFile␊
574// Modifies the input buffer.␊
575// Expects to see one dictionary in the XML file.␊
576// Puts the first dictionary it finds in the␊
577// tag pointer and returns 0, or returns -1 if not found␊
578// (and does not modify dict pointer).␊
579// Prints an error message if there is a parsing error.␊
580//␊
581int ParseXMLFile( char * buffer, TagPtr * dict )␊
582{␊
583 long length, pos;␊
584 TagPtr tag;␊
585 pos = 0;␊
586 char *configBuffer;␊
587␉␊
588 configBuffer = malloc(strlen(buffer)+1);␊
589 if (!configBuffer) {␊
590 return -1;␊
591 } ␊
592 ␊
593 strcpy(configBuffer, buffer);␊
594␉␊
595 while (1)␊
596 {␊
597 length = XMLParseNextTag(configBuffer + pos, &tag);␊
598 if (length == -1) break;␊
599␉␉␊
600 pos += length;␊
601␉␉␊
602 if (tag == 0) continue;␊
603 if (tag->type == kTagTypeDict) break;␊
604␉␉␊
605 XMLFreeTag(tag);␊
606 }␊
607 free(configBuffer);␊
608 if (length < 0) {␊
609 error ("Error parsing plist file\n");␊
610 return -1;␊
611 }␊
612 *dict = tag;␊
613 return 0;␊
614}␊
615␊
616/* loadConfigFile␊
617 *␊
618 * Returns 0 - successful.␊
619 *␉␉ -1 - unsuccesful.␊
620 */␊
621int loadConfigFile (const char *configFile, config_file_t *config)␊
622{␊
623␉int fd, count, fixedsize;␊
624 ␊
625 ASSERT_CONFIG␊
626 ␊
627␉if ((fd = open(configFile)) < 0) {␊
628␉␉return -1;␊
629␉}␊
630␉␊
631 fixedsize = MIN(file_size(fd),IO_CONFIG_DATA_SIZE);␊
632 ␊
633␉// read file␊
634␉count = read(fd, config->plist, fixedsize);␊
635␉close(fd);␊
636 if (count != fixedsize) return -1;␊
637␊
638␉// build xml dictionary␉␊
639␉return ParseXMLFile(config->plist, &config->dictionary);␊
640}␊
641␊
642/* loadBooterConfig␊
643 *␊
644 * Returns 0 - successful.␊
645 *␉␉ -1 - unsuccesful.␊
646 */␊
647int loadBooterConfig(void)␊
648{␊
649␉char *dirspec[] = {␉␉␉␉␉␉␉ ␊
650␉␉"rd(0,0)/Extra/com.apple.Boot.plist", ␊
651␉␉"/Extra/com.apple.Boot.plist",␊
652␉␉"bt(0,0)/Extra/com.apple.Boot.plist",␊
653␉␉"rd(0,0)/Extra/org.chameleon.Boot.plist", // Add compatibility with the trunk ␊
654␉␉"/Extra/org.chameleon.Boot.plist", // Add compatibility with the trunk ␊
655␉␉"bt(0,0)/Extra/org.chameleon.Boot.plist" // Add compatibility with the trunk␉␉␊
656 ␊
657␉};␊
658 ␊
659 config_file_t *config = &bootInfo->bootConfig;␊
660 ␊
661␉int i, fd, count, ret=-1, fixedsize;␊
662 ␊
663␉for(i = 0; (unsigned)i< sizeof(dirspec)/sizeof(dirspec[0]); i++)␊
664␉{␊
665␉␉if ((fd = open(dirspec[i])) >= 0)␊
666␉␉{␊
667␉␉␉// read file␊
668 fixedsize = MIN(file_size(fd),IO_CONFIG_DATA_SIZE);␊
669␉␉␉count = read(fd, config->plist, fixedsize);␊
670␉␉␉close(fd);␊
671 if (count != fixedsize) continue;␊
672␊
673␉␉␉// build xml dictionary␊
674␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
675 safe_set_env(envSysConfigValid,true);␊
676␉␉␉ret=0;␊
677␉␉␉␊
678␉␉␉// enable canOverride flag␊
679␉␉␉config->canOverride = true;␊
680 ␊
681␉␉␉break;␊
682␉␉}␊
683␉}␊
684#ifdef BOOT_HELPER_SUPPORT␊
685␉if(ret == -1)␊
686␉{␊
687␉␉ret = loadHelperConfig();␊
688␉}␊
689#endif␊
690␉␊
691␉return ret;␊
692}␊
693␊
694/* loadOverrideConfig␊
695 *␊
696 * Returns 0 - successful.␊
697 *␉␉ -1 - unsuccesful.␊
698 */␊
699int loadOverrideConfig(void)␊
700{␊
701␉char *dirspec[] = {␊
702␉␉"/Extra/com.apple.Boot.plist", ␊
703␉␉"/Extra/org.chameleon.Boot.plist" ␊
704␉};␊
705 ␊
706 config_file_t *config = &bootInfo->overrideConfig;␊
707␊
708 ␊
709␉int i, fd, count, ret=-1, fixedsize;␊
710 ␊
711␉for(i = 0; (unsigned)i< sizeof(dirspec)/sizeof(dirspec[0]); i++)␊
712␉{␊
713␉␉if ((fd = open(dirspec[i])) >= 0)␊
714␉␉{␊
715␉␉␉// read file␊
716␉␉␉fixedsize = MIN(file_size(fd),IO_CONFIG_DATA_SIZE); ␊
717␉␉␉count = read(fd, config->plist, fixedsize);␊
718␉␉␉close(fd);␊
719 if (count != fixedsize) continue;␊
720␉␉␉␊
721␉␉␉// build xml dictionary␊
722␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
723 safe_set_env(envSysConfigValid,true);␊
724␉␉␉ret=0;␊
725␉␉␉break;␊
726␉␉}␊
727␉}␊
728#ifdef BOOT_HELPER_SUPPORT␉␊
729␉if(ret == -1)␊
730␉{␊
731␉␉ret = loadHelperConfig();␊
732␉}␊
733#endif␊
734 ␊
735␉return ret;␊
736}␊
737␊
738/* loadSystemConfig␊
739 *␊
740 * Returns 0 - successful.␊
741 *␉␉ -1 - unsuccesful.␊
742 */␊
743int loadSystemConfig(void)␊
744{␊
745␉char *dirspec[] = {␊
746 "rd(0,0)/Library/Preferences/SystemConfiguration/com.apple.Boot.plist",␊
747␉␉"/Library/Preferences/SystemConfiguration/com.apple.Boot.plist",␊
748␉␉"bt(0,0)/Library/Preferences/SystemConfiguration/com.apple.Boot.plist",␊
749 "rd(0,0)/OS X Install Data/com.apple.Boot.plist",␊
750␉␉"/OS X Install Data/com.apple.Boot.plist",␊
751␉␉"bt(0,0)/OS X Install Data/com.apple.Boot.plist",␊
752 "rd(0,0)/Mac OS X Install Data/com.apple.Boot.plist",␊
753␉␉"/Mac OS X Install Data/com.apple.Boot.plist",␊
754␉␉"bt(0,0)/Mac OS X Install Data/com.apple.Boot.plist"␊
755␉};␊
756 ␊
757 config_file_t *config = &bootInfo->SystemConfig;␊
758␊
759 ␊
760␉int i, fd, count, ret=-1, fixedsize;␊
761␉␊
762␉for(i = 0; (unsigned)i< sizeof(dirspec)/sizeof(dirspec[0]); i++)␊
763␉{␊
764␉␉if ((fd = open(dirspec[i])) >= 0)␊
765␉␉{␊
766␉␉␉// read file␊
767␉␉␉fixedsize = MIN(file_size(fd),IO_CONFIG_DATA_SIZE); ␊
768␉␉␉count = read(fd, config->plist, fixedsize);␊
769␉␉␉close(fd);␊
770 if (count != fixedsize) continue;␊
771␉␉␉␊
772␉␉␉// build xml dictionary␊
773␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
774 safe_set_env(envSysConfigValid,true);␊
775␉␉␉ret=0;␉␉␉␊
776␉␉␉break;␊
777␉␉}␊
778␉}␊
779␉␊
780␉return ret;␊
781}␊
782␊
783#ifdef BOOT_HELPER_SUPPORT␊
784␊
785/* loadHelperConfig␊
786 *␊
787 * Returns 0 - successful.␊
788 *␉␉ -1 - unsuccesful.␊
789 */␊
790int loadHelperConfig(void)␊
791{␊
792␉int rfd, pfd, sfd, count, ret=-1, fixedsize;␊
793␉␊
794␉char *dirspec[] = {␊
795␉␉"/com.apple.boot.P/Library/Preferences/SystemConfiguration/com.apple.Boot.plist",␊
796␉␉"/com.apple.boot.R/Library/Preferences/SystemConfiguration/com.apple.Boot.plist",␊
797␉␉"/com.apple.boot.S/Library/Preferences/SystemConfiguration/com.apple.Boot.plist"␊
798␉};␊
799␉␊
800 config_file_t *config = &bootInfo->helperConfig;␊
801 ␊
802 ␊
803␉// This is a simple rock - paper scissors algo. R beats S, P beats R, S beats P␊
804␉// If all three, S is used for now. This should be change dto something else (say, timestamp?)␊
805␉␊
806␉pfd = open(dirspec[0]);␊
807␉if(pfd >= 0)␉// com.apple.boot.P exists␊
808␉{␊
809␉␉sfd = open(dirspec[2]); // com.apple.boot.S takes precidence if it also exists␊
810␉␉if(sfd >= 0)␊
811␉␉{␊
812␉␉␉// Use sfd␊
813 fixedsize = MIN(file_size(sfd),IO_CONFIG_DATA_SIZE);␊
814␉␉␉count = read(sfd, config->plist, fixedsize);␊
815␉␉␉close(sfd);␊
816␉␉␉close(pfd); ␊
817 if (count != fixedsize) return -1;␊
818 ␊
819␉␉␉// build xml dictionary␊
820␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
821 safe_set_env(envSysConfigValid,true);␊
822␉␉␉ret=0;␊
823␉␉␉␊
824␉␉}␊
825␉␉else␊
826␉␉{␊
827␉␉␉// used pfd␊
828 fixedsize = MIN(file_size(pfd),IO_CONFIG_DATA_SIZE);␊
829␉␉␉count = read(pfd, config->plist, fixedsize);␊
830␉␉␉close(pfd);␊
831 if (count != fixedsize) return -1;␊
832␊
833␉␉␉// build xml dictionary␊
834␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
835 safe_set_env(envSysConfigValid,true);␊
836␉␉␉ret=0;␊
837␉␉}␊
838␉␉␊
839␉}␊
840␉else␊
841␉{␊
842␉␉rfd = open(dirspec[1]); // com.apple.boot.R exists␊
843␉␉if(rfd >= 0)␊
844␉␉{␊
845␉␉␉pfd = open(dirspec[2]); // com.apple.boot.P takes recidence if it exists␊
846␉␉␉if(pfd >= 0)␊
847␉␉␉{␊
848␉␉␉␉// use sfd␊
849 fixedsize = MIN(file_size(pfd),IO_CONFIG_DATA_SIZE);␊
850␉␉␉␉count = read(pfd, config->plist, fixedsize);␊
851␉␉␉␉close(pfd);␊
852␉␉␉␉close(rfd);␊
853 if (count != fixedsize) return -1;␊
854␊
855␉␉␉␉// build xml dictionary␊
856␉␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
857 safe_set_env(envSysConfigValid,true);␊
858␉␉␉␉ret=0;␊
859␉␉␉␉␊
860␉␉␉}␊
861␉␉␉else␊
862␉␉␉{␊
863␉␉␉␉// use rfd␊
864 fixedsize = MIN(file_size(rfd),IO_CONFIG_DATA_SIZE);␊
865␉␉␉␉count = read(rfd, config->plist, fixedsize);␊
866␉␉␉␉close(rfd);␊
867 if (count != fixedsize) return -1;␊
868␊
869␉␉␉␉// build xml dictionary␊
870␉␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
871 safe_set_env(envSysConfigValid,true);␊
872␉␉␉␉ret=0;␊
873␉␉␉␉␊
874␉␉␉}␊
875␉␉␉␊
876␉␉}␊
877␉␉else␊
878␉␉{␊
879␉␉␉sfd = open(dirspec[2]); // com.apple.boot.S exists, but nothing else does␊
880␉␉␉if(sfd >= 0)␊
881␉␉␉{␊
882␉␉␉␉// use sfd␊
883 fixedsize = MIN(file_size(sfd),IO_CONFIG_DATA_SIZE);␊
884␉␉␉␉count = read(sfd, config->plist, fixedsize);␊
885␉␉␉␉close(sfd);␊
886 if (count != fixedsize) return -1;␊
887␊
888␉␉␉␉// build xml dictionary␊
889␉␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
890 safe_set_env(envSysConfigValid,true);␊
891␉␉␉␉ret=0;␊
892␉␉␉␉␊
893␉␉␉}␊
894␉␉}␊
895␉␉␊
896␉}␊
897␉␊
898␉return ret;␊
899}␊
900#endif␊
901␊
902static char * AllocInitStringWithLength(const char * oldString, int len)␊
903{␊
904␉char *Buf = NULL;␊
905␉Buf = malloc(len);␊
906␉if (Buf == NULL) return NULL;␊
907␉␊
908␉if (oldString != NULL)␊
909␉␉strlcpy(Buf, oldString,len);␊
910␉␊
911␉return Buf;␊
912}␊
913␊
914static char * AllocInitZeroEndedStringWithLength(const char * oldString, int len)␊
915{␉␊
916␉if (len > 0)␊
917␉{␊
918␉␉return AllocInitStringWithLength( oldString, len + 1);␊
919␉}␊
920␉return NULL;␊
921}␊
922␊
923char * newString(const char * oldString)␊
924{␉␊
925 if ( oldString )␊
926␉{␊
927␉␉int len = strlen(oldString);␊
928␉␉␊
929␉␉if (len > 0) ␊
930␉␉{␊
931␉␉␉return AllocInitZeroEndedStringWithLength(oldString, len);␊
932␉␉}␉␊
933␉}␉␊
934 return NULL;␊
935}␊
936␊
937char * newStringWithLength(const char * oldString, int len)␊
938{␉␊
939␉if (len > 0) ␊
940␉{␊
941␉␉return AllocInitZeroEndedStringWithLength(oldString, len);␊
942␉}␉␉␊
943 return NULL;␊
944}␊
945␊
946char * newEmptyStringWithLength(int len)␊
947{␉␊
948␉if (len > 0) ␊
949␉{␊
950␉␉return AllocInitZeroEndedStringWithLength(NULL, len);␊
951␉}␉␉␊
952 return NULL;␊
953}␊
954␊
955/*␊
956 * Extracts the next argument from the command line, double quotes are allowed here.␊
957 */␊
958char * getNextArg(char ** argPtr, char * val)␊
959{␊
960␉char * ptr = *argPtr;␊
961␉const char * strStart;␊
962␉int len = 0;␊
963␉bool isQuoted = false;␊
964␉␊
965␉*val = '\0';␊
966␉␊
967␉// Scan for the next non-whitespace character.␊
968␉while ( *ptr && (*ptr == ' ' || *ptr == '=') )␊
969␉{␊
970␉␉ptr++;␊
971␉}␊
972␉␊
973␉strStart = ptr;␊
974␉␊
975␉// Skip the leading double quote character.␊
976␉if (*ptr == '\"')␊
977␉{␊
978␉␉isQuoted = true;␊
979␉␉ptr++;␊
980␉␉strStart++;␊
981␉}␊
982␉␊
983␉// Scan for the argument terminator character.␊
984␉// This can be either a NULL character - in case we reach the end of the string,␊
985␉// a double quote in case of quoted argument,␊
986␉// or a whitespace character (' ' or '=') for non-quoted argument.␊
987␉while (*ptr && !( (isQuoted && (*ptr == '\"')) ||␊
988␉␉␉␉␉ (!isQuoted && (*ptr == ' ' || *ptr == '=')) )␊
989␉␉ )␊
990␉{␊
991␉␉ptr++;␊
992␉}␊
993␉␊
994␉len = ptr - strStart;␊
995␉␊
996␉// Skip the closing double quote character and adjust␊
997␉// the starting pointer for the next getNextArg call.␊
998␉if (*ptr && isQuoted && *ptr == '\"')␊
999␉␉ptr++;␊
1000␉␊
1001␉// Copy the extracted argument to val.␊
1002␉strncat(val, strStart, len);␊
1003␉␊
1004␉// Set command line pointer.␊
1005␉*argPtr = ptr;␊
1006␉␊
1007␉return ptr;␊
1008}␊
1009

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