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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 "bootstruct.h"␊
30#include "libsaio.h"␊
31#include "boot.h"␊
32#include "xml.h"␊
33␊
34extern char *Language;␊
35extern char *LoadableFamilies;␊
36␊
37bool sysConfigValid;␊
38␊
39/*␊
40 * Compare a string to a key with quoted characters␊
41 */␊
42static inline int␊
43keyncmp(const char *str, const char *key, int n)␊
44{␊
45 int c;␊
46 while (n--) {␊
47␉c = *key++;␊
48␉if (c == '\\') {␊
49␉ switch(c = *key++) {␊
50␉ case 'n':␊
51␉␉c = '\n';␊
52␉␉break;␊
53␉ case 'r':␊
54␉␉c = '\r';␊
55␉␉break;␊
56␉ case 't':␊
57␉␉c = '\t';␊
58␉␉break;␊
59␉ default:␊
60␉␉break;␊
61␉ }␊
62␉} else if (c == '\"') {␊
63␉ // Premature end of key␊
64␉ return 1;␊
65␉}␊
66␉if (c != *str++) {␊
67␉ return 1;␊
68␉}␊
69 }␊
70 return 0;␊
71}␊
72␊
73#if UNUSED␊
74␊
75static void eatThru(char val, const char **table_p)␊
76{␊
77␉register const char *table = *table_p;␊
78␉register bool found = false;␊
79␊
80␉while (*table && !found)␊
81␉{␊
82␉␉if (*table == '\\') table += 2;␊
83␉␉else␊
84␉␉{␊
85␉␉␉if (*table == val) found = true;␊
86␉␉␉table++;␊
87␉␉}␊
88␉}␊
89␉*table_p = table;␊
90}␊
91␊
92/* Remove key and its associated value from the table. */␊
93␊
94bool␊
95removeKeyFromTable(const char *key, char *table)␊
96{␊
97 register int len;␊
98 register char *tab;␊
99 char *buf;␊
100␊
101 len = strlen(key);␊
102 tab = (char *)table;␊
103 buf = (char *)malloc(len + 3);␊
104␊
105 sprintf(buf, "\"%s\"", key);␊
106 len = strlen(buf);␊
107␊
108 while(*tab) {␊
109 if(strncmp(buf, tab, len) == 0) {␊
110 char c;␊
111␊
112 while((c = *(tab + len)) != ';') {␊
113 if(c == 0) {␊
114 len = -1;␊
115 goto out;␊
116 }␊
117 len++;␊
118 }␊
119 len++;␊
120 if(*(tab + len) == '\n') len++;␊
121 goto out;␊
122 }␊
123 tab++;␊
124 }␊
125 len = -1;␊
126out:␊
127 free(buf);␊
128␊
129 if(len == -1) return false;␊
130␊
131 while((*tab = *(tab + len))) {␊
132 tab++;␊
133 }␊
134␊
135 return true;␊
136}␊
137␊
138char *newStringFromList(char **list, int *size)␊
139{␊
140␉char *begin = *list, *end;␊
141␉char *newstr;␊
142␉int newsize = *size;␊
143␉int bufsize;␊
144 ␊
145␉while (*begin && newsize && isspace(*begin)) {␊
146␉␉begin++;␊
147␉␉newsize--;␊
148␉}␊
149␉end = begin;␊
150␉while (*end && newsize && !isspace(*end)) {␊
151␉␉end++;␊
152␉␉newsize--;␊
153␉}␊
154␉if (begin == end) {␊
155␉␉return 0;␊
156␉}␊
157␉bufsize = end - begin + 1;␊
158␉newstr = malloc(bufsize);␊
159␉strlcpy(newstr, begin, bufsize);␊
160␉*list = end;␊
161␉*size = newsize;␊
162␉return newstr;␊
163}␊
164␊
165#endif␊
166␊
167/* ␊
168 * compress == compress escaped characters to one character␊
169 */␊
170int stringLength(const char *table, int compress)␊
171{␊
172␉int ret = 0;␊
173␊
174␉while (*table) {␊
175␉␉if (*table == '\\') {␊
176␉␉␉table += 2;␊
177␉␉␉ret += 1 + (compress ? 0 : 1);␊
178␉␉} else {␊
179␉␉␉if (*table == '\"') {␊
180␉␉␉␉return ret;␊
181␉␉␉}␊
182␉␉␉ret++;␊
183␉␉␉table++;␊
184␉␉}␊
185␉}␊
186␉return ret;␊
187}␊
188␊
189␊
190bool getValueForConfigTableKey(config_file_t *config, const char *key, const char **val, int *size)␊
191{␊
192␉if (config->dictionary != 0 ) {␊
193␉␉// Look up key in XML dictionary␊
194␉␉TagPtr value;␊
195␉␉value = XMLGetProperty(config->dictionary, key);␊
196␉␉if (value != 0) {␊
197␉␉␉if (value->type != kTagTypeString) {␊
198␉␉␉␉error("Non-string tag '%s' found in config file\n", key);␊
199␉␉␉␉return false;␊
200␉␉␉}␊
201␉␉␉*val = value->string;␊
202␉␉␉*size = strlen(value->string);␊
203␉␉␉return true;␊
204␉␉}␊
205␉} else {␊
206␊
207␉␉// Legacy plist-style table␊
208␊
209␉}␊
210␊
211␉return false;␊
212}␊
213␊
214#if UNUSED␊
215␊
216/*␊
217 * Returns a new malloc'ed string if one is found␊
218 * in the string table matching 'key'. Also translates␊
219 * \n escapes in the string.␊
220 */␊
221char *newStringForStringTableKey(char *table, char *key, config_file_t *config)␊
222{␊
223␉const char *val;␊
224␉char *newstr, *p;␊
225␉int size;␊
226 ␊
227␉if (getValueForConfigTableKey(config, key, &val, &size)) {␊
228␉␉newstr = (char *)malloc(size+1);␊
229␉␉for (p = newstr; size; size--, p++, val++) {␊
230␉␉␉if ((*p = *val) == '\\') {␊
231␉␉␉␉switch (*++val) {␊
232␉␉␉␉␉case 'r':␊
233␉␉␉␉␉␉*p = '\r';␊
234␉␉␉␉␉break;␊
235␉␉␉␉␉case 'n':␊
236␉␉␉␉␉␉*p = '\n';␊
237␉␉␉␉␉break;␊
238␉␉␉␉␉case 't':␊
239␉␉␉␉␉␉*p = '\t';␊
240␉␉␉␉␉break;␊
241␉␉␉␉␉default:␊
242␉␉␉␉␉␉*p = *val;␊
243␉␉␉␉␉break;␊
244␉␉␉␉}␊
245␉␉␉␉size--;␊
246␉␉␉}␊
247␉␉}␊
248␉␉*p = '\0';␊
249␉␉return newstr;␊
250␉} else {␊
251␉␉return 0;␊
252␉}␊
253}␊
254␊
255#endif␊
256␊
257char *newStringForKey(char *key, config_file_t *config)␊
258{␊
259␉const char *val;␊
260␉char *newstr;␊
261␉int size;␊
262 ␊
263␉if (getValueForKey(key, &val, &size, config) && size) {␊
264␉␉newstr = (char *)malloc(size + 1);␊
265␉␉strlcpy(newstr, val, size + 1);␊
266␉␉return newstr;␊
267␉} else {␊
268␉␉return 0;␊
269␉}␊
270}␊
271␊
272/* parse a command line␊
273 * in the form: [<argument> ...] [<option>=<value> ...]␊
274 * both <option> and <value> must be either composed of␊
275 * non-whitespace characters, or enclosed in quotes.␊
276 */␊
277␊
278static const char *getToken(const char *line, const char **begin, int *len)␊
279{␊
280␉if (*line == '\"') {␊
281␉␉*begin = ++line;␊
282␉␉while (*line && *line != '\"') {␊
283␉␉␉line++;␊
284␉␉}␊
285␉␉*len = line++ - *begin;␊
286␉} else {␊
287␉␉*begin = line;␊
288␉␉while (*line && !isspace(*line) && *line != '=') {␊
289␉␉␉line++;␊
290␉␉}␊
291␉␉*len = line - *begin;␊
292␉}␊
293␉return line;␊
294}␊
295␊
296bool getValueForBootKey(const char *line, const char *match, const char **matchval, int *len)␊
297{␊
298␉const char *key, *value;␊
299␉int key_len, value_len;␊
300␉bool retval = false;␊
301 ␊
302␉while (*line) {␊
303␉␉/* look for keyword or argument */␊
304␉␉while (isspace(*line)) {␊
305␉␉␉line++;␊
306␉␉}␊
307␊
308␉␉/* now look for '=' or whitespace */␊
309␉␉line = getToken(line, &key, &key_len);␊
310␉␉/* line now points to '=' or space */␊
311␉␉if (*line && !isspace(*line)) {␊
312␉␉␉line = getToken(++line, &value, &value_len);␊
313␉␉} else {␊
314␉␉␉value = line;␊
315␉␉␉value_len = 0;␊
316␉␉}␊
317␉␉if ((strlen(match) == key_len) && strncmp(match, key, key_len) == 0) {␊
318␉␉␉// create a new string␊
319␉␉␉char* newstr = malloc(value_len + 1);␊
320␉␉␉strncpy(newstr, value, value_len);␊
321␉␉␉newstr[value_len] = 0;␊
322␉␉␊
323␉␉␉*matchval = newstr;␊
324␉␉␉*len = value_len;␊
325␉␉␉retval = true;␊
326␉␉␉/* Continue to look for this key; last one wins. */␊
327␉␉}␊
328␉}␊
329␊
330␉return retval;␊
331}␊
332␊
333/* Return NULL if no option has been successfully retrieved, or the string otherwise */␊
334const char * getStringForKey(const char * key, config_file_t *config)␊
335{␊
336␉static const char* value =0;␊
337␉int len=0;␊
338␉if(!getValueForKey(key, &value, &len, config)) {␊
339␉␉value = 0;␊
340␉}␊
341␉return value;␊
342}␊
343␊
344␊
345/* Returns TRUE if a value was found, FALSE otherwise.␊
346 * The boolean value of the key is stored in 'val'.␊
347 */␊
348␊
349bool getBoolForKey( const char *key, bool *result_val, config_file_t *config )␊
350{␊
351 const char *key_val;␊
352 int size;␊
353 ␊
354␉if (getValueForKey(key, &key_val, &size, config)) {␊
355␉␉if ( (size >= 1) && (key_val[0] == 'Y' || key_val[0] == 'y') ) {␊
356␉␉␉*result_val = true;␊
357␉␉} else {␊
358␉␉␉*result_val = false;␊
359␉␉}␊
360␉␉return true;␊
361␉}␊
362␉return false;␊
363}␊
364␊
365bool getIntForKey( const char *key, int *value, config_file_t *config )␊
366{␊
367␉const char *val;␊
368␉int size, sum;␊
369␉bool negative = false;␊
370 ␊
371␉if (getValueForKey(key, &val, &size, config)) {␊
372␉␉if ( size ) {␊
373␉␉␉if (*val == '-') {␊
374␉␉␉␉negative = true;␊
375␉␉␉␉val++;␊
376␉␉␉␉size--;␊
377␉␉␉}␊
378␉␉␉␊
379␉␉␉for (sum = 0; size > 0; size--) {␊
380␉␉␉␉if (*val < '0' || *val > '9') {␊
381␉␉␉␉␉return false;␊
382␉␉␉␉}␊
383␉␉␉␉␊
384␉␉␉␉sum = (sum * 10) + (*val++ - '0');␊
385␉␉␉}␊
386␉␉␉␊
387␉␉␉if (negative) {␊
388␉␉␉␉sum = -sum;␊
389␉␉␉}␊
390␉␉␉*value = sum;␊
391␉␉␉return true;␊
392␉␉}␊
393␉}␊
394␉return false;␊
395}␊
396␊
397/*␊
398 *␊
399 */␊
400␊
401bool getDimensionForKey( const char *key, unsigned int *value, config_file_t *config, unsigned int dimension_max, unsigned int object_size )␊
402{␊
403␉const char *val;␊
404␊
405␉int size = 0;␊
406␉int sum = 0;␊
407␊
408␉bool negative = false;␊
409␉bool percentage = false;␊
410␊
411␉if (getValueForKey(key, &val, &size, config)) {␊
412␉␉if ( size ) {␊
413␉␉␉if (*val == '-') {␊
414␉␉␉␉negative = true;␊
415␉␉␉␉val++;␊
416␉␉␉␉size--;␊
417␉␉␉}␊
418␊
419␉␉␉if (val[size-1] == '%') {␊
420␉␉␉␉percentage = true;␊
421␉␉␉␉size--;␊
422␉␉␉}␊
423␊
424␉␉␉// convert string to integer␊
425␉␉␉for (sum = 0; size > 0; size--) {␊
426␉␉␉␉if (*val < '0' || *val > '9') {␊
427␉␉␉␉␉return false;␊
428␉␉␉␉}␊
429␊
430␉␉␉␉sum = (sum * 10) + (*val++ - '0');␊
431␉␉␉}␊
432␊
433␉␉␉if (percentage) {␊
434␉␉␉␉sum = ( dimension_max * sum ) / 100;␊
435␉␉␉}␊
436␊
437␉␉␉// calculate offset from opposite origin␊
438␉␉␉if (negative) {␊
439␉␉␉␉sum = ( ( dimension_max - object_size ) - sum );␊
440␉␉␉}␊
441␊
442␉␉} else {␊
443␊
444␉␉␉// null value calculate center␊
445␉␉␉sum = ( dimension_max - object_size ) / 2;␊
446␊
447␉␉}␊
448␊
449␉␉*value = (uint16_t) sum;␊
450␉␉return true;␊
451␉}␊
452␊
453␉// key not found␊
454␉return false;␊
455}␊
456␊
457/*␊
458 *␉get color value from plist format #RRGGBB␊
459 */␊
460␊
461bool getColorForKey( const char *key, unsigned int *value, config_file_t *config )␊
462{␊
463␉const char *val;␊
464␉int size;␊
465␊
466␉if (getValueForKey(key, &val, &size, config))␊
467␉{␊
468␉␉if (*val == '#') {␊
469␉␉␉val++;␊
470␉␉␉*value = strtol(val, NULL, 16);␊
471␉␉␉return true;␊
472␉␉}␊
473␉}␊
474␉return false;␊
475}␊
476␊
477bool getValueForKey( const char *key, const char **val, int *size, config_file_t *config )␊
478{␊
479␉const char *overrideVal;␊
480␉int overrideSize;␊
481␉bool override, ret;␊
482␊
483␉if (getValueForBootKey(bootArgs->CommandLine, key, val, size)) {␊
484␉␉return true;␊
485␉}␊
486␊
487␉ret = getValueForConfigTableKey(config, key, val, size);␊
488␊
489␉// Try to find alternate keys in bootInfo->chameleonConfig (if config can be overriden)␊
490␉// and prefer its values with the exceptions for␊
491␉// "Kernel"="mach_kernel" and "Kernel Flags"="".␊
492␊
493␉if (config->canOverride) {␊
494␉␉if (getValueForConfigTableKey(&bootInfo->chameleonConfig, key, &overrideVal, &overrideSize)) {␊
495␉␉␉override = true;␊
496␊
497␉␉␉// NOTE: Values are defined by apple as being in com.apple.Boot.plist␊
498␉␉␉// kHelperRootUUIDKey, kKernelArchKey, kMKextCacheKey, kKernelCacheKey, kKernelNameKey, kKernelFlagsKey␊
499␉␉␉if (ret && (strcmp(key, kKernelNameKey) == 0) && (overrideSize == 0)) {␊
500␉␉␉␉override = false;␊
501␉␉␉}␊
502␊
503␉␉␉if (ret && (strcmp(key, kKernelFlagsKey) == 0) && (overrideSize == 0)) {␊
504␉␉␉␉override = false;␊
505␉␉␉}␊
506␊
507␉␉␉if (override) {␊
508␉␉␉␉*val = overrideVal;␊
509␉␉␉␉*size = overrideSize;␊
510␉␉␉␉return true;␊
511␉␉␉}␊
512␉␉}␊
513␉}␊
514␉return ret;␊
515}␊
516␊
517␊
518#if UNUSED␊
519void␊
520printSystemConfig(char *p1)␊
521{␊
522␉char *p2 = p1, tmp;␊
523␊
524␉while (*p1 != '\0') {␊
525␉␉while (*p2 != '\0' && *p2 != '\n') {␊
526␉␉␉p2++;␊
527␉␉}␊
528␉tmp = *p2;␊
529␉*p2 = '\0';␊
530␉printf("%s\n", p1);␊
531␉*p2 = tmp;␊
532␉if (tmp == '\0') {␊
533␉␉break;␊
534␉}␊
535␉p1 = ++p2;␊
536 }␊
537}␊
538#endif␊
539␊
540//==========================================================================␊
541// ParseXMLFile␊
542// Modifies the input buffer.␊
543// Expects to see one dictionary in the XML file.␊
544// Puts the first dictionary it finds in the␊
545// tag pointer and returns 0, or returns -1 if not found␊
546// (and does not modify dict pointer).␊
547// Prints an error message if there is a parsing error.␊
548//␊
549int ParseXMLFile( char * buffer, TagPtr * dict )␊
550{␊
551␉long length, pos;␊
552␉TagPtr tag;␊
553␉pos = 0;␊
554␉char *configBuffer;␊
555 ␊
556␉configBuffer = malloc(strlen(buffer)+1);␊
557␉strcpy(configBuffer, buffer);␊
558␊
559␉while (1) {␊
560␉␉length = XMLParseNextTag(configBuffer + pos, &tag);␊
561␉␉␉if (length == -1) {␊
562␉␉␉␉break;␊
563␉␉␉}␊
564␊
565␉␉pos += length;␊
566␊
567␉␉if (tag == 0) {␊
568␉␉␉continue;␊
569␉␉}␊
570␉␉if (tag->type == kTagTypeDict) {␊
571␉␉␉break;␊
572␉␉}␊
573␊
574␉␉XMLFreeTag(tag);␊
575␉}␊
576␉free(configBuffer);␊
577␉if (length < 0) {␊
578␉␉error ("Error parsing plist file\n");␊
579␉␉return -1;␊
580␉}␊
581␉*dict = tag;␊
582␉return 0;␊
583}␊
584␊
585/* loadConfigFile␊
586 *␊
587 * Returns 0 - successful.␊
588 *␉␉ -1 - unsuccesful.␊
589 */␊
590int loadConfigFile (const char *configFile, config_file_t *config)␊
591{␊
592␉int fd, count;␊
593␊
594␉if ((fd = open_bvdev("bt(0,0)", configFile, 0)) < 0) {␊
595␉␉return -1;␊
596␉}␊
597␉// read file␊
598␉count = read(fd, config->plist, IO_CONFIG_DATA_SIZE);␊
599␉close(fd);␊
600␊
601␉// build xml dictionary␊
602␉ParseXMLFile(config->plist, &config->dictionary);␊
603␉return 0;␊
604}␊
605␊
606␊
607/* loadSystemConfig␊
608 *␊
609 * Returns 0 - successful.␊
610 *␉␉ -1 - unsuccesful.␊
611 */␊
612int loadSystemConfig(config_file_t *config)␊
613{␊
614␉char *dirspec[] = {␊
615␉␉"/Library/Preferences/SystemConfiguration/com.apple.Boot.plist",␊
616␉␉"/OS X Install Data/com.apple.Boot.plist",␊
617␉};␊
618␊
619␉int i, fd, count, ret=-1;␊
620␊
621␉for(i = 0; i< sizeof(dirspec)/sizeof(dirspec[0]); i++) {␊
622␉␉if ((fd = open(dirspec[i], 0)) >= 0) {␊
623␉␉␉// read file␊
624␉␉␉count = read(fd, config->plist, IO_CONFIG_DATA_SIZE);␊
625␉␉␉close(fd);␊
626␊
627␉␉␉// build xml dictionary␊
628␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
629␉␉␉sysConfigValid = true;␉␊
630␉␉␉ret=0;␊
631␊
632␉␉␉break;␊
633␉␉}␊
634␉}␊
635␊
636␉if(ret == -1) ret = loadHelperConfig(config);␊
637␊
638␉// Always enable canOverride flag (for SystemConfig)␊
639␉config->canOverride = true;␊
640␊
641␉return ret;␊
642}␊
643␊
644/* loadChameleonConfig␊
645 *␊
646 * Returns 0 - successful.␊
647 *␉␉ -1 - unsuccesful.␊
648 */␊
649int loadChameleonConfig(config_file_t *config)␊
650{␊
651␉char *dirspec[] = {␊
652␉␉"rd(0,0)/Extra/org.chameleon.Boot.plist",␊
653␉␉"/Extra/org.chameleon.Boot.plist",␊
654␉␉"bt(0,0)/Extra/org.chameleon.Boot.plist",␊
655␉␉␊
656␉␉"rd(0,0)/Extra/com.apple.Boot.plist", /* DEPRECIATED */␊
657␉␉"/Extra/com.apple.Boot.plist", /* DEPRECIATED */␊
658␉␉"bt(0,0)/Extra/com.apple.Boot.plist", /* DEPRECIATED */␊
659␉};␊
660␊
661␉int i, fd, count, ret=-1;␊
662␊
663␉for(i = 0; i< sizeof(dirspec)/sizeof(dirspec[0]); i++) {␊
664␉␉if ((fd = open(dirspec[i], 0)) >= 0) {␊
665␉␉␉// Check for depreciated file names and annoy the user about it.␊
666␉␉␉if(strstr(dirspec[i], "com.apple.Boot.plist")) {␊
667␉␉␉␉printf("%s is depreciated.\n", dirspec[i]);␊
668␉␉␉␉dirspec[i][strlen(dirspec[i]) - strlen("com.apple.Boot.plist")] = 0;␊
669␉␉␉␉printf("Please use the file %sorg.chameleon.Boot.plist instead.\n", dirspec[i]);␊
670␉␉␉␉pause();␊
671␉␉␉}␊
672␉␉␉// read file␊
673␉␉␉count = read(fd, config->plist, IO_CONFIG_DATA_SIZE);␊
674␉␉␉close(fd);␊
675␉␉␉␊
676␉␉␉// build xml dictionary␊
677␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
678␉␉␉sysConfigValid = true;␉␊
679␉␉␉ret=0;␊
680␉␉␉break;␊
681␉␉}␊
682␉}␊
683␉return ret;␊
684}␊
685␊
686/* loadHelperConfig␊
687 *␊
688 * Returns 0 - successful.␊
689 *␉␉ -1 - unsuccesful.␊
690 */␊
691int loadHelperConfig(config_file_t *config)␊
692{␊
693␉char *dirspec[] = {␊
694␉␉"/com.apple.boot.P/Library/Preferences/SystemConfiguration/com.apple.Boot.plist",␊
695␉␉"/com.apple.boot.R/Library/Preferences/SystemConfiguration/com.apple.Boot.plist",␊
696␉␉"/com.apple.boot.S/Library/Preferences/SystemConfiguration/com.apple.Boot.plist"␊
697␉};␊
698␊
699␉int i, fd, count, ret=-1;␊
700␊
701␉for(i = 0; i< sizeof(dirspec)/sizeof(dirspec[0]); i++) {␊
702␉␉if ((fd = open(dirspec[i], 0)) >= 0) {␊
703␉␉␉// read file␊
704␉␉␉count = read(fd, config->plist, IO_CONFIG_DATA_SIZE);␊
705␉␉␉close(fd);␊
706␉␉␉␊
707␉␉␉// build xml dictionary␊
708␉␉␉ParseXMLFile(config->plist, &config->dictionary);␊
709␉␉␉sysConfigValid = true;␉␊
710␉␉␉ret=0;␊
711␉␉␉break;␊
712␉␉}␊
713␉}␊
714␉return ret;␊
715}␊
716␊
717char * newString(const char * oldString)␊
718{␊
719␉if ( oldString ) {␊
720␉␉return strcpy(malloc(strlen(oldString)+1), oldString);␊
721␉} else {␊
722␉␉return NULL;␊
723␉}␊
724}␊
725␊
726/*␊
727 * Extracts the next argument from the command line, double quotes are allowed here.␊
728 */␊
729char * getNextArg(char ** argPtr, char * val)␊
730{␊
731␉char * ptr = *argPtr;␊
732␉const char * strStart;␊
733␉int len = 0;␊
734␉bool isQuoted = false;␊
735␊
736␉*val = '\0';␊
737␊
738␉// Scan for the next non-whitespace character.␊
739␉while ( *ptr && (*ptr == ' ' || *ptr == '=') ) {␊
740␉␉ptr++;␊
741␉}␊
742 ␊
743␉strStart = ptr;␊
744␊
745␉// Skip the leading double quote character.␊
746␉if (*ptr == '\"') {␊
747␉␉isQuoted = true;␊
748␉␉ptr++;␊
749␉␉strStart++;␊
750␉}␊
751␊
752␉// Scan for the argument terminator character.␊
753␉// This can be either a NULL character - in case we reach the end of the string,␊
754␉// a double quote in case of quoted argument,␊
755␉// or a whitespace character (' ' or '=') for non-quoted argument.␊
756␉while (*ptr && !( (isQuoted && (*ptr == '\"')) ||␊
757 (!isQuoted && (*ptr == ' ' || *ptr == '=')) )␊
758 ) {␊
759␉␉ptr++;␊
760␉}␊
761␊
762␉len = ptr - strStart;␊
763␊
764␉// Skip the closing double quote character and adjust␊
765␉// the starting pointer for the next getNextArg call.␊
766␉if (*ptr && isQuoted && *ptr == '\"') {␊
767␉␉ptr++;␊
768␉}␊
769␊
770␉// Copy the extracted argument to val.␊
771␉strncat(val, strStart, len);␊
772␊
773␉// Set command line pointer.␊
774␉*argPtr = ptr;␊
775␊
776␉return ptr;␊
777}␊
778

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