forked from acmacalister/jetfire
-
Notifications
You must be signed in to change notification settings - Fork 0
/
JFRSecurity.m
206 lines (190 loc) · 7.24 KB
/
JFRSecurity.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
/////////////////////////////////////////////////////////////////////////////
//
// JFRSecurity.m
//
// Created by Austin and Dalton Cherry on 9/3/15.
// Copyright (c) 2015 Vluxe. All rights reserved.
//
/////////////////////////////////////////////////////////////////////////////
#import "JFRSecurity.h"
@interface JFRSSLCert ()
@property(nonatomic, strong)NSData *certData;
@property(nonatomic)SecKeyRef key;
@end
@implementation JFRSSLCert
/////////////////////////////////////////////////////////////////////////////
- (instancetype)initWithData:(NSData *)data {
if(self = [super init]) {
self.certData = data;
}
return self;
}
////////////////////////////////////////////////////////////////////////////
- (instancetype)initWithKey:(SecKeyRef)key {
if(self = [super init]) {
self.key = key;
}
return self;
}
////////////////////////////////////////////////////////////////////////////
- (void)dealloc {
if(self.key) {
CFRelease(self.key);
}
}
////////////////////////////////////////////////////////////////////////////
@end
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
@interface JFRSecurity ()
@property(nonatomic)BOOL isReady; //is the key processing done?
@property(nonatomic, strong)NSMutableArray *certificates;
@property(nonatomic, strong)NSMutableArray *pubKeys;
@property(nonatomic)BOOL usePublicKeys;
@end
@implementation JFRSecurity
/////////////////////////////////////////////////////////////////////////////
- (instancetype)initUsingPublicKeys:(BOOL)publicKeys {
NSArray *paths = [[NSBundle mainBundle] pathsForResourcesOfType:@"cer" inDirectory:@"."];
NSMutableArray<JFRSSLCert*> *collect = [NSMutableArray array];
for(NSString *path in paths) {
NSData *data = [NSData dataWithContentsOfFile:path];
if(data) {
[collect addObject:[[JFRSSLCert alloc] initWithData:data]];
}
}
return [self initWithCerts:collect publicKeys:publicKeys];
}
/////////////////////////////////////////////////////////////////////////////
- (instancetype)initWithCerts:(NSArray<JFRSSLCert*>*)certs publicKeys:(BOOL)publicKeys {
if(self = [super init]) {
self.validatedDN = YES;
self.usePublicKeys = publicKeys;
if(self.usePublicKeys) {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0), ^{
NSMutableArray *collect = [NSMutableArray array];
for(JFRSSLCert *cert in certs) {
if(cert.certData && !cert.key) {
cert.key = [self extractPublicKey:cert.certData];
}
if(cert.key) {
[collect addObject:CFBridgingRelease(cert.key)];
}
}
self.certificates = collect;
self.isReady = YES;
});
} else {
NSMutableArray<NSData*> *collect = [NSMutableArray array];
for(JFRSSLCert *cert in certs) {
if(cert.certData) {
[collect addObject:cert.certData];
}
}
self.certificates = collect;
self.isReady = YES;
}
}
return self;
}
/////////////////////////////////////////////////////////////////////////////
- (BOOL)isValid:(SecTrustRef)trust domain:(NSString*)domain {
int tries = 0;
while (!self.isReady) {
usleep(1000);
tries++;
if(tries > 5) {
return NO; //doesn't appear it is going to ever be ready...
}
}
BOOL status = NO;
SecPolicyRef policy;
if(self.validatedDN) {
policy = SecPolicyCreateSSL(true, (__bridge CFStringRef)domain);
} else {
policy = SecPolicyCreateBasicX509();
}
SecTrustSetPolicies(trust,policy);
if(self.usePublicKeys) {
for(id serverKey in [self publicKeyChainForTrust:trust]) {
for(id keyObj in self.pubKeys) {
if([serverKey isEqual:keyObj]) {
status = YES;
break;
}
}
}
} else {
NSArray *serverCerts = [self certificateChainForTrust:trust];
NSMutableArray *collect = [NSMutableArray arrayWithCapacity:self.certificates.count];
for(NSData *data in self.certificates) {
[collect addObject:CFBridgingRelease(SecCertificateCreateWithData(nil,(__bridge CFDataRef)data))];
}
SecTrustSetAnchorCertificates(trust,(__bridge CFArrayRef)collect);
SecTrustResultType result = 0;
SecTrustEvaluate(trust,&result);
if(result == kSecTrustResultUnspecified || result == kSecTrustResultProceed) {
NSInteger trustedCount = 0;
for(NSData *serverData in serverCerts) {
for(NSData *certData in self.certificates) {
if([certData isEqualToData:serverData]) {
trustedCount++;
break;
}
}
}
if(trustedCount == serverCerts.count) {
status = YES;
}
}
}
CFRelease(policy);
return status;
}
/////////////////////////////////////////////////////////////////////////////
- (SecKeyRef)extractPublicKey:(NSData*)data {
SecCertificateRef possibleKey = SecCertificateCreateWithData(nil,(__bridge CFDataRef)data);
SecPolicyRef policy = SecPolicyCreateBasicX509();
SecKeyRef key = [self extractPublicKeyFromCert:possibleKey policy:policy];
CFRelease(policy);
CFRelease(possibleKey);
return key;
}
/////////////////////////////////////////////////////////////////////////////
- (SecKeyRef)extractPublicKeyFromCert:(SecCertificateRef)cert policy:(SecPolicyRef)policy {
SecTrustRef trust;
SecTrustCreateWithCertificates(cert,policy,&trust);
SecTrustResultType result = kSecTrustResultInvalid;
SecTrustEvaluate(trust,&result);
SecKeyRef key = SecTrustCopyPublicKey(trust);
CFRelease(trust);
return key;
}
/////////////////////////////////////////////////////////////////////////////
- (NSArray*)certificateChainForTrust:(SecTrustRef)trust {
NSMutableArray *collect = [NSMutableArray array];
for(int i = 0; i < SecTrustGetCertificateCount(trust); i++) {
SecCertificateRef cert = SecTrustGetCertificateAtIndex(trust,i);
if(cert) {
[collect addObject:CFBridgingRelease(SecCertificateCopyData(cert))];
}
}
return collect;
}
/////////////////////////////////////////////////////////////////////////////
- (NSArray*)publicKeyChainForTrust:(SecTrustRef)trust {
NSMutableArray *collect = [NSMutableArray array];
SecPolicyRef policy = SecPolicyCreateBasicX509();
for(int i = 0; i < SecTrustGetCertificateCount(trust); i++) {
SecCertificateRef cert = SecTrustGetCertificateAtIndex(trust,i);
SecKeyRef key = [self extractPublicKeyFromCert:cert policy:policy];
if(key) {
[collect addObject:CFBridgingRelease(key)];
}
}
CFRelease(policy);
return collect;
}
/////////////////////////////////////////////////////////////////////////////
@end