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- Revamped x509_verify() and the SSL f_vrfy callback implementations

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This commit is contained in:
Paul Bakker
2012-09-28 07:10:55 +00:00
parent 819370c7b7
commit 915275ba78
8 changed files with 264 additions and 114 deletions
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23
include/polarssl/x509.h
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@ -77,6 +77,7 @@
#define BADCRL_EXPIRED 0x20 /**< CRL is expired. */
#define BADCERT_MISSING 0x40 /**< Certificate was missing. */
#define BADCERT_SKIP_VERIFY 0x80 /**< Certificate verification was skipped. */
#define BADCERT_OTHER 0x0100 /**< Other reason (can be used by verify callback) */
/* \} name */
/* \} addtogroup x509_module */
@ -310,7 +311,7 @@ typedef struct _x509_cert
int ext_types; /**< Bit string containing detected and parsed extensions */
int ca_istrue; /**< Optional Basic Constraint extension value: 1 if this certificate belongs to a CA, 0 otherwise. */
int max_pathlen; /**< Optional Basic Constraint extension value: The maximum path length to the root certificate. */
int max_pathlen; /**< Optional Basic Constraint extension value: The maximum path length to the root certificate. Path length is 1 higher than RFC 5280 'meaning', so 1+ */
unsigned char key_usage; /**< Optional key usage extension value: See the values below */
@ -671,6 +672,20 @@ int x509parse_time_expired( const x509_time *time );
/**
* \brief Verify the certificate signature
*
* The verify callback is a user-supplied callback that
* can clear / modify / add flags for a certificate. If set,
* the verification callback is called for each
* certificate in the chain (from the trust-ca down to the
* presented crt). The parameters for the callback are:
* (void *parameter, x509_cert *crt, int certificate_depth,
* int *flags). With the flags representing current flags for
* that specific certificate and the certificate depth from
* the top (Trust CA depth = 0).
*
* All flags left after returning from the callback
* are also returned to the application. The function should
* return 0 for anything but a fatal error.
*
* \param crt a certificate to be verified
* \param trust_ca the trusted CA chain
* \param ca_crl the CRL chain for trusted CA's
@ -687,14 +702,14 @@ int x509parse_time_expired( const x509_time *time );
* BADCERT_REVOKED --
* BADCERT_CN_MISMATCH --
* BADCERT_NOT_TRUSTED
*
* \note TODO: add two arguments, depth and crl
* or another error in case of a fatal error encountered
* during the verification process.
*/
int x509parse_verify( x509_cert *crt,
x509_cert *trust_ca,
x509_crl *ca_crl,
const char *cn, int *flags,
int (*f_vrfy)(void *, x509_cert *, int, int),
int (*f_vrfy)(void *, x509_cert *, int, int *),
void *p_vrfy );
/**