mirror of
https://github.com/samsonjs/arq_restore.git
synced 2026-03-25 09:25:53 +00:00
244 lines
8.1 KiB
Objective-C
244 lines
8.1 KiB
Objective-C
/*
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Copyright (c) 2009-2017, Haystack Software LLC https://www.arqbackup.com
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the names of PhotoMinds LLC or Haystack Software, nor the names of
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their contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "NSString_extra.h"
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#import "RegexKitLite.h"
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#include <openssl/bio.h>
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#include <openssl/evp.h>
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static const char table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
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static BOOL isbase64(char c)
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{
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return c && strchr(table, c) != NULL;
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}
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static inline char value(char c)
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{
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const char *p = strchr(table, c);
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if(p) {
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return p-table;
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} else {
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return 0;
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}
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}
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static int UnBase64(unsigned char *dest, const unsigned char *src, int srclen)
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{
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*dest = 0;
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if(*src == 0)
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{
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return 0;
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}
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unsigned char *p = dest;
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do
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{
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char a = value(src[0]);
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char b = value(src[1]);
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char c = value(src[2]);
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char d = value(src[3]);
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*p++ = (a << 2) | (b >> 4);
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*p++ = (b << 4) | (c >> 2);
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*p++ = (c << 6) | d;
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if(!isbase64(src[1]))
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{
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p -= 2;
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break;
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}
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else if(!isbase64(src[2]))
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{
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p -= 2;
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break;
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}
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else if(!isbase64(src[3]))
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{
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p--;
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break;
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}
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src += 4;
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while(*src && (*src == 13 || *src == 10)) src++;
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}
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while(srclen-= 4);
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*p = 0;
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return (int)(p-dest);
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}
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static NSString *PATH_PATTERN = @"^(.+)(\\.\\w+)$";
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static char hexCharToInt(char c1) {
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if (c1 >= '0' && c1 <= '9') {
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return c1 - '0';
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}
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if (c1 >= 'a' && c1 <= 'f') {
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return c1 - 'a' + 10;
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}
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if (c1 >= 'A' && c1 <= 'F') {
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return c1 - 'A' + 10;
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}
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return -1;
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}
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@implementation NSString (extra)
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+ (NSString *)hexStringWithData:(NSData *)data {
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return [NSString hexStringWithBytes:[data bytes] length:(unsigned int)[data length]];
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}
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+ (NSString *)hexStringWithBytes:(const unsigned char *)bytes length:(unsigned int)length {
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if (length == 0) {
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return [NSString string];
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}
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char *buf = (char *)malloc(length * 2 + 1);
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for (unsigned int i = 0; i < length; i++) {
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unsigned char c = bytes[i];
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unsigned char c1 = (c >> 4) & 0x0f;
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if (c1 > 9) {
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c1 = 'a' + c1 - 10;
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} else {
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c1 = '0' + c1;
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}
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unsigned char c2 = (c & 0xf);
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if (c2 > 9) {
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c2 = 'a' + c2 - 10;
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} else {
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c2 = '0' + c2;
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}
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buf[i*2] = c1;
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buf[i*2+1] = c2;
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}
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NSString *ret = [[[NSString alloc] initWithBytes:buf length:length*2 encoding:NSUTF8StringEncoding] autorelease];
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free(buf);
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return ret;
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}
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+ (NSString *)stringWithRandomUUID {
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CFUUIDRef uuidObj = CFUUIDCreate(nil);//create a new UUID
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NSString *uuidString = (NSString*)CFUUIDCreateString(nil, uuidObj);
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CFRelease(uuidObj);
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return [uuidString autorelease];
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}
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- (NSString *)stringWithUniquePath {
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NSString *left = self;
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NSString *right = @"";
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if ([self rangeOfRegex:PATH_PATTERN].location != NSNotFound) {
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left = [self substringWithRange:[self rangeOfRegex:PATH_PATTERN capture:1]];
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right = [self substringWithRange:[self rangeOfRegex:PATH_PATTERN capture:2]];
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}
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NSFileManager *fm = [NSFileManager defaultManager];
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NSUInteger index = 2;
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NSString *path = [NSString stringWithString:self];
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while ([fm fileExistsAtPath:path]) {
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path = [NSString stringWithFormat:@"%@_%lu%@", left, (unsigned long)index++, right];
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}
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return path;
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}
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- (NSData *)hexStringToData:(NSError **)error {
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const char *ascii = [self cStringUsingEncoding:NSASCIIStringEncoding];
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size_t len = strlen(ascii) / 2;
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NSMutableData *data = [NSMutableData dataWithLength:len];
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char *bytes = (char *)[data mutableBytes];
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for (size_t i = 0; i < len; i++) {
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char c1 = hexCharToInt(ascii[i*2]);
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char c2 = hexCharToInt(ascii[i*2 + 1]);
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if (c1 < 0 || c2 < 0) {
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SETNSERROR(@"NSStringExtraErrorDomain", -1, @"invalid hex string %@", self);
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return nil;
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}
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unsigned char tmp = ((unsigned char)c1 << 4) | (unsigned char)c2;
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bytes[i] = tmp;
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}
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return data;
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}
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- (NSData *)decodeBase64 {
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NSData *encodedData = [self dataUsingEncoding:NSASCIIStringEncoding];
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const unsigned char *encoded = (const unsigned char *)[encodedData bytes];
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unsigned char *decoded = (unsigned char *)malloc([encodedData length]);
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int ret = UnBase64(decoded, encoded, (int)[encodedData length]);
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NSData *decodedData = [[[NSData alloc] initWithBytes:decoded length:ret] autorelease];
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free(decoded);
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return decodedData;
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}
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- (NSComparisonResult)compareByLength:(NSString *)value {
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NSUInteger myLength = [self length];
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NSUInteger otherLength = [value length];
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if (myLength == otherLength) {
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return [self compare:value];
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}
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if (myLength < otherLength) {
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return NSOrderedAscending;
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}
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return NSOrderedDescending;
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}
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- (NSString *)stringByEscapingURLCharacters {
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return [(NSString *)CFURLCreateStringByAddingPercentEscapes(NULL,
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(CFStringRef)self,
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NULL,
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(CFStringRef)@"!*'();:@&=+$,/?%#[]",
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kCFStringEncodingUTF8) autorelease];
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}
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- (NSString *)stringByDeletingTrailingSlash {
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if ([self isEqualToString:@"/"] || ![self hasSuffix:@"/"]) {
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return self;
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}
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return [self substringToIndex:[self length] - 1];
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}
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- (NSString *)stringByAppendingTrailingSlash {
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if ([self isEqualToString:@"/"] || [self hasSuffix:@"/"]) {
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return self;
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}
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return [self stringByAppendingString:@"/"];
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}
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+ (NSString *)stringWithRandomCharacters:(NSUInteger)length {
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NSString *letters = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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NSMutableString *randomString = [NSMutableString stringWithCapacity:length];
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for (int i=0; i < length; i++) {
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[randomString appendFormat: @"%C", [letters characterAtIndex: arc4random_uniform((unsigned int)[letters length])]];
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}
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return randomString;
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}
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- (BOOL)isValidEmailAddress {
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BOOL stricterFilter = NO; // Discussion http://blog.logichigh.com/2010/09/02/validating-an-e-mail-address/
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NSString *stricterFilterString = @"[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}";
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NSString *laxString = @".+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2}[A-Za-z]*";
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NSString *emailRegex = stricterFilter ? stricterFilterString : laxString;
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NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
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return [emailTest evaluateWithObject:self];
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}
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@end
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