// Try to remove the dynamic MIME file used for dynamic content-type generation.
// You cannot rely on registry being sane at this point, as we can't guarantee
// the order destructors are called, so please don't access it here.
void __destructor fini_remove_dynamic_plist(void)
{
CFURLRef home_directory = NULL;
CFURLRef pref_directory = NULL;
CFURLRef mime_file = NULL;
CFURLRef mime_file_lock = NULL;
SInt32 error_code = -1;
// Resolve the home directory.
home_directory = CFCopyHomeDirectoryURLForUser(NULL);
if (home_directory == NULL) {
goto finished;
}
// Resolve Preferences directory (this is how CoreFoundation does it), I
// don't want to have to rely on this, but they don't make it easy.
pref_directory = CFURLCreateWithFileSystemPathRelativeToBase(kCFAllocatorDefault,
CFSTR("Library/Preferences/"),
kCFURLPOSIXPathStyle,
true,
home_directory);
if (pref_directory == NULL) {
goto finished;
}
// Append the name of my cache file.
mime_file = CFURLCreateWithFileSystemPathRelativeToBase(kCFAllocatorDefault,
CFSTR("com.google.netscapesecurity.plist"),
kCFURLPOSIXPathStyle,
false,
pref_directory);
mime_file_lock = CFURLCreateWithFileSystemPathRelativeToBase(kCFAllocatorDefault,
CFSTR("com.google.netscapesecurity.plist.lockfile"),
kCFURLPOSIXPathStyle,
false,
pref_directory);
if (!mime_file || !mime_file_lock) {
goto finished;
}
// Delete the file, and possibly stale lockfile, I don't care if it fails.
CFURLDestroyResource(mime_file, &error_code);
CFURLDestroyResource(mime_file_lock, &error_code);
finished:
CFRelease(home_directory);
CFRelease(pref_directory);
CFRelease(mime_file);
CFRelease(mime_file_lock);
return;
}
// domain should already be locked.
static Boolean _writeXMLFile(CFURLRef url, CFMutableDictionaryRef dict, Boolean isWorldReadable, Boolean *tryAgain) {
Boolean success = false;
CFAllocatorRef alloc = __CFPreferencesAllocator();
*tryAgain = false;
if (CFDictionaryGetCount(dict) == 0) {
// Destroy the file
CFBooleanRef val = (CFBooleanRef) CFURLCreatePropertyFromResource(alloc, url, kCFURLFileExists, NULL);
if (val && CFBooleanGetValue(val)) {
success = CFURLDestroyResource(url, NULL);
} else {
success = true;
}
if (val) CFRelease(val);
} else {
CFPropertyListFormat desiredFormat = __CFPreferencesShouldWriteXML() ? kCFPropertyListXMLFormat_v1_0 : kCFPropertyListBinaryFormat_v1_0;
CFDataRef data = CFPropertyListCreateData(alloc, dict, desiredFormat, 0, NULL);
if (data) {
SInt32 mode;
#if TARGET_OS_OSX || TARGET_OS_LINUX
mode = isWorldReadable ? S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH : S_IRUSR|S_IWUSR;
#else
mode = 0666;
#endif
#if TARGET_OS_OSX
{ // Try quick atomic way first, then fallback to slower ways and error cases
CFStringRef scheme = CFURLCopyScheme(url);
if (!scheme) {
*tryAgain = false;
CFRelease(data);
return false;
} else if (CFStringCompare(scheme, CFSTR("file"), 0) == kCFCompareEqualTo) {
SInt32 length = CFDataGetLength(data);
const void *bytes = (0 == length) ? (const void *)"" : CFDataGetBytePtr(data);
Boolean atomicWriteSuccess = __CFWriteBytesToFileWithAtomicity(url, bytes, length, mode, true);
if (atomicWriteSuccess) {
CFRelease(scheme);
*tryAgain = false;
CFRelease(data);
return true;
}
if (!atomicWriteSuccess && thread_errno() == ENOSPC) {
CFRelease(scheme);
*tryAgain = false;
CFRelease(data);
return false;
}
}
CFRelease(scheme);
}
#endif
success = CFURLWriteDataAndPropertiesToResource(url, data, URLPropertyDictForPOSIXMode(mode), NULL);
URLPropertyDictRelease();
if (success) {
CFDataRef readData;
if (!CFURLCreateDataAndPropertiesFromResource(alloc, url, &readData, NULL, NULL, NULL) || !CFEqual(readData, data)) {
success = false;
*tryAgain = true;
}
if (readData) CFRelease(readData);
} else {
CFBooleanRef val = (CFBooleanRef) CFURLCreatePropertyFromResource(alloc, url, kCFURLFileExists, NULL);
if (!val || !CFBooleanGetValue(val)) {
CFURLRef tmpURL = CFURLCreateWithFileSystemPathRelativeToBase(alloc, CFSTR("."), kCFURLPOSIXPathStyle, true, url); // Just "." because url is not a directory URL
CFURLRef parentURL = tmpURL ? CFURLCopyAbsoluteURL(tmpURL) : NULL;
if (tmpURL) CFRelease(tmpURL);
if (val) CFRelease(val);
val = (CFBooleanRef) CFURLCreatePropertyFromResource(alloc, parentURL, kCFURLFileExists, NULL);
if ((!val || !CFBooleanGetValue(val)) && _createDirectory(parentURL, isWorldReadable)) {
// parent directory didn't exist; now it does; try again to write
success = CFURLWriteDataAndPropertiesToResource(url, data, URLPropertyDictForPOSIXMode(mode), NULL);
URLPropertyDictRelease();
if (success) {
CFDataRef rdData;
if (!CFURLCreateDataAndPropertiesFromResource(alloc, url, &rdData, NULL, NULL, NULL) || !CFEqual(rdData, data)) {
success = false;
*tryAgain = true;
}
if (rdData) CFRelease(rdData);
}
}
if (parentURL) CFRelease(parentURL);
}
if (val) CFRelease(val);
}
CFRelease(data);
} else {
// ??? This should never happen
CFLog(__kCFLogAssertion, CFSTR("Could not generate XML data for property list"));
success = false;
}
}
return success;
}
