FilesExpand file tree

 master

/

openssl_hostname_validation.h

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

61 lines (54 loc) · 2.33 KB

 master

/

openssl_hostname_validation.h

Copy path

Top

File metadata and controls

• Code
• Blame

61 lines (54 loc) · 2.33 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

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

/* Obtained from:

* https://github.com/iSECPartners/ssl-conservatory

*

* Local copy of whitepaper available here:

* http://obdumper/development/papers/everything-you-wanted-to-know-about-openssl.pdf

*/

/*

Copyright (C) 2012, iSEC Partners.

Permission is hereby granted, free of charge, to any person obtaining a copy of

this software and associated documentation files (the "Software"), to deal in

the Software without restriction, including without limitation the rights to

use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies

of the Software, and to permit persons to whom the Software is furnished to do

so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all

copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

SOFTWARE.

*/

/*

* Helper functions to perform basic hostname validation using OpenSSL.

*

* Please read "everything-you-wanted-to-know-about-openssl.pdf" before

* attempting to use this code. This whitepaper describes how the code works,

* how it should be used, and what its limitations are.

*

* Author: Alban Diquet

* License: See LICENSE

*

*/

typedef enum {

MatchFound,

MatchNotFound,

NoSANPresent,

MalformedCertificate,

Error

} HostnameValidationResult;

/**

* Validates the server's identity by looking for the expected hostname in the

* server's certificate. As described in RFC 6125, it first tries to find a match

* in the Subject Alternative Name extension. If the extension is not present in

* the certificate, it checks the Common Name instead.

*

* Returns MatchFound if a match was found.

* Returns MatchNotFound if no matches were found.

* Returns MalformedCertificate if any of the hostnames had a NUL character embedded in it.

* Returns Error if there was an error.

*/

HostnameValidationResult validate_hostname(const char *hostname, const X509 *server_cert);