CertManager API

Functions

	Name
WOLFSSL_CERT_MANAGER *	wolfSSL_CertManagerNew_ex(void * heap) Allocates and initializes a new Certificate Manager context. This context may be used independent of SSL needs. It may be used to load certificates, verify certificates, and check the revocation status.
WOLFSSL_CERT_MANAGER *	wolfSSL_CertManagerNew(void ) Allocates and initializes a new Certificate Manager context. This context may be used independent of SSL needs. It may be used to load certificates, verify certificates, and check the revocation status.
void	wolfSSL_CertManagerFree(WOLFSSL_CERT_MANAGER * ) Frees all resources associated with the Certificate Manager context. Call this when you no longer need to use the Certificate Manager.
int	wolfSSL_CertManagerLoadCA(WOLFSSL_CERT_MANAGER * cm, const char * f, const char * d) Specifies the locations for CA certificate loading into the manager context. The PEM certificate CAfile may contain several trusted CA certificates. If CApath is not NULL it specifies a directory containing CA certificates in PEM format.
int	wolfSSL_CertManagerLoadCABuffer(WOLFSSL_CERT_MANAGER * cm, const unsigned char * in, long sz, int format) Loads the CA Buffer by calling wolfSSL_CTX_load_verify_buffer and returning that result using a temporary cm so as not to lose the information in the cm passed into the function.
int	wolfSSL_CertManagerUnloadCAs(WOLFSSL_CERT_MANAGER * cm) This function unloads the CA signer list.
int	wolfSSL_CertManagerUnloadIntermediateCerts(WOLFSSL_CERT_MANAGER * cm) This function unloads intermediate certificates add to the CA signer list.
int	wolfSSL_CertManagerUnload_trust_peers(WOLFSSL_CERT_MANAGER * cm) The function will free the Trusted Peer linked list and unlocks the trusted peer list.
int	wolfSSL_CertManagerVerify(WOLFSSL_CERT_MANAGER * cm, const char * f, int format) Specifies the certificate to verify with the Certificate Manager context. The format can be SSL_FILETYPE_PEM or SSL_FILETYPE_ASN1.
int	wolfSSL_CertManagerVerifyBuffer(WOLFSSL_CERT_MANAGER * cm, const unsigned char * buff, long sz, int format) Specifies the certificate buffer to verify with the Certificate Manager context. The format can be SSL_FILETYPE_PEM or SSL_FILETYPE_ASN1.
void	wolfSSL_CertManagerSetVerify(WOLFSSL_CERT_MANAGER * cm, VerifyCallback vc) The function sets the verifyCallback function in the Certificate Manager. If present, it will be called for each cert loaded. If there is a verification error, the verify callback can be used to over-ride the error.
int	wolfSSL_CertManagerEnableCRL(WOLFSSL_CERT_MANAGER * cm, int options) Turns on Certificate Revocation List checking when verifying certificates with the Certificate Manager. By default, CRL checking is off. options include WOLFSSL_CRL_CHECKALL which performs CRL checking on each certificate in the chain versus the Leaf certificate only which is the default.
int	wolfSSL_CertManagerDisableCRL(WOLFSSL_CERT_MANAGER * ) Turns off Certificate Revocation List checking when verifying certificates with the Certificate Manager. By default, CRL checking is off. You can use this function to temporarily or permanently disable CRL checking with this Certificate Manager context that previously had CRL checking enabled.
int	wolfSSL_CertManagerLoadCRL(WOLFSSL_CERT_MANAGER * cm, const char * path, int type, int monitor) Error checks and passes through to LoadCRL() in order to load the cert into the CRL for revocation checking. An updated CRL can be loaded by first calling wolfSSL_CertManagerFreeCRL, then loading the new CRL.
int	wolfSSL_CertManagerLoadCRLBuffer(WOLFSSL_CERT_MANAGER * cm, const unsigned char * buff, long sz, int type) The function loads the CRL file by calling BufferLoadCRL.
int	wolfSSL_CertManagerSetCRL_Cb(WOLFSSL_CERT_MANAGER * cm, CbMissingCRL cb) This function sets the CRL Certificate Manager callback. If HAVE_CRL is defined and a matching CRL record is not found then the cbMissingCRL is called (set via wolfSSL_CertManagerSetCRL_Cb). This allows you to externally retrieve the CRL and load it.
int	wolfSSL_CertManagerSetCRLUpdate_Cb(WOLFSSL_CERT_MANAGER * cm, CbUpdateCRL cb) This function sets the CRL Update callback. If HAVE_CRL and HAVE_CRL_UPDATE_CB is defined , and an entry with the same issuer and a lower CRL number exists when a CRL is added, then the CbUpdateCRL is called with the details of the existing entry and the new one replacing it.
int	wolfSSL_CertManagerGetCRLInfo(WOLFSSL_CERT_MANAGER * cm, CrlInfo * info, const byte * buff, long sz, int type) This function yields a structure with parsed CRL information from an encoded CRL buffer.
int	wolfSSL_CertManagerCheckOCSP(WOLFSSL_CERT_MANAGER * cm, unsigned char * der, int sz) The function enables the WOLFSSL_CERT_MANAGER’s member, ocspEnabled to signify that the OCSP check option is enabled.
int	wolfSSL_CertManagerEnableOCSP(WOLFSSL_CERT_MANAGER * cm, int options) Turns on OCSP if it’s turned off and if compiled with the set option available.
int	wolfSSL_CertManagerDisableOCSP(WOLFSSL_CERT_MANAGER * ) Disables OCSP certificate revocation.
int	wolfSSL_CertManagerSetOCSPOverrideURL(WOLFSSL_CERT_MANAGER * cm, const char * url) The function copies the url to the ocspOverrideURL member of the WOLFSSL_CERT_MANAGER structure.
int	wolfSSL_CertManagerSetOCSP_Cb(WOLFSSL_CERT_MANAGER * cm, CbOCSPIO ioCb, CbOCSPRespFree respFreeCb, void * ioCbCtx) The function sets the OCSP callback in the WOLFSSL_CERT_MANAGER.
int	wolfSSL_CertManagerEnableOCSPStapling(WOLFSSL_CERT_MANAGER * cm) This function turns on OCSP stapling if it is not turned on as well as set the options.

Functions Documentation

function wolfSSL_CertManagerNew_ex

WOLFSSL_CERT_MANAGER * wolfSSL_CertManagerNew_ex(
    void * heap
)

Allocates and initializes a new Certificate Manager context. This context may be used independent of SSL needs. It may be used to load certificates, verify certificates, and check the revocation status.

Parameters:

• none No parameters.

See: wolfSSL_CertManagerFree

Return:

• WOLFSSL_CERT_MANAGER If successful the call will return a valid WOLFSSL_CERT_MANAGER pointer.
• NULL will be returned for an error state.

function wolfSSL_CertManagerNew

WOLFSSL_CERT_MANAGER * wolfSSL_CertManagerNew(
    void 
)

Allocates and initializes a new Certificate Manager context. This context may be used independent of SSL needs. It may be used to load certificates, verify certificates, and check the revocation status.

Parameters:

• none No parameters.

See: wolfSSL_CertManagerFree

Return:

• WOLFSSL_CERT_MANAGER If successful the call will return a valid WOLFSSL_CERT_MANAGER pointer.
• NULL will be returned for an error state.

Example

#import <wolfssl/ssl.h>

WOLFSSL_CERT_MANAGER* cm;
cm = wolfSSL_CertManagerNew();
if (cm == NULL) {
// error creating new cert manager
}

function wolfSSL_CertManagerFree

void wolfSSL_CertManagerFree(
    WOLFSSL_CERT_MANAGER * 
)

Frees all resources associated with the Certificate Manager context. Call this when you no longer need to use the Certificate Manager.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().

See: wolfSSL_CertManagerNew

Return: none

Example

#include <wolfssl/ssl.h>

WOLFSSL_CERT_MANAGER* cm;
...
wolfSSL_CertManagerFree(cm);

function wolfSSL_CertManagerLoadCA

int wolfSSL_CertManagerLoadCA(
    WOLFSSL_CERT_MANAGER * cm,
    const char * f,
    const char * d
)

Specifies the locations for CA certificate loading into the manager context. The PEM certificate CAfile may contain several trusted CA certificates. If CApath is not NULL it specifies a directory containing CA certificates in PEM format.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().
• file pointer to the name of the file containing CA certificates to load.
• path pointer to the name of a directory path containing CA c ertificates to load. The NULL pointer may be used if no certificate directory is desired.

See: wolfSSL_CertManagerVerify

Return:

• SSL_SUCCESS If successful the call will return.
• SSL_BAD_FILETYPE will be returned if the file is the wrong format.
• SSL_BAD_FILE will be returned if the file doesn’t exist, can’t be read, or is corrupted.
• MEMORY_E will be returned if an out of memory condition occurs.
• ASN_INPUT_E will be returned if Base16 decoding fails on the file.
• BAD_FUNC_ARG is the error that will be returned if a pointer is not provided.
• SSL_FATAL_ERROR - will be returned upon failure.

Example

#include <wolfssl/ssl.h>

int ret = 0;
WOLFSSL_CERT_MANAGER* cm;
...
ret = wolfSSL_CertManagerLoadCA(cm, “path/to/cert-file.pem”, 0);
if (ret != SSL_SUCCESS) {
// error loading CA certs into cert manager
}

function wolfSSL_CertManagerLoadCABuffer

int wolfSSL_CertManagerLoadCABuffer(
    WOLFSSL_CERT_MANAGER * cm,
    const unsigned char * in,
    long sz,
    int format
)

Loads the CA Buffer by calling wolfSSL_CTX_load_verify_buffer and returning that result using a temporary cm so as not to lose the information in the cm passed into the function.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().
• in buffer for cert information.
• sz length of the buffer.
• format certificate format, either PEM or DER.

See:

• wolfSSL_CTX_load_verify_buffer
• ProcessChainBuffer
• ProcessBuffer
• cm_pick_method

Return:

• SSL_FATAL_ERROR is returned if the WOLFSSL_CERT_MANAGER struct is NULL or if wolfSSL_CTX_new() returns NULL.
• SSL_SUCCESS is returned for a successful execution.

Example

WOLFSSL_CERT_MANAGER* cm = (WOLFSSL_CERT_MANAGER*)vp;
…
const unsigned char* in;
long sz;
int format;
…
if(wolfSSL_CertManagerLoadCABuffer(vp, sz, format) != SSL_SUCCESS){
    Error returned. Failure case code block.
}

function wolfSSL_CertManagerUnloadCAs

int wolfSSL_CertManagerUnloadCAs(
    WOLFSSL_CERT_MANAGER * cm
)

This function unloads the CA signer list.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().

See: UnlockMutex

Return:

• SSL_SUCCESS returned on successful execution of the function.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER is NULL.
• BAD_MUTEX_E returned if there was a mutex error.

Example

#include <wolfssl/ssl.h>

WOLFSSL_CTX* ctx = wolfSSL_CTX_new(protocol method);
WOLFSSL_CERT_MANAGER* cm = wolfSSL_CTX_GetCertManager(ctx);
...
if(wolfSSL_CertManagerUnloadCAs(cm) != SSL_SUCCESS){
    Failure case.
}

function wolfSSL_CertManagerUnloadIntermediateCerts

int wolfSSL_CertManagerUnloadIntermediateCerts(
    WOLFSSL_CERT_MANAGER * cm
)

This function unloads intermediate certificates add to the CA signer list.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().

See: UnlockMutex

Return:

• SSL_SUCCESS returned on successful execution of the function.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER is NULL.
• BAD_MUTEX_E returned if there was a mutex error.

Example

#include <wolfssl/ssl.h>

WOLFSSL_CTX* ctx = wolfSSL_CTX_new(protocol method);
WOLFSSL_CERT_MANAGER* cm = wolfSSL_CTX_GetCertManager(ctx);
...
if(wolfSSL_CertManagerUnloadIntermediateCerts(cm) != SSL_SUCCESS){
    Failure case.
}

function wolfSSL_CertManagerUnload_trust_peers

int wolfSSL_CertManagerUnload_trust_peers(
    WOLFSSL_CERT_MANAGER * cm
)

The function will free the Trusted Peer linked list and unlocks the trusted peer list.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().

See: UnLockMutex

Return:

• SSL_SUCCESS if the function completed normally.
• BAD_FUNC_ARG if the WOLFSSL_CERT_MANAGER is NULL.
• BAD_MUTEX_E mutex error if tpLock, a member of the WOLFSSL_CERT_MANAGER struct, is 0 (nill).

Example

#include <wolfssl/ssl.h>

WOLFSSL_CTX* ctx = WOLFSSL_CTX_new(Protocol define);
WOLFSSL_CERT_MANAGER* cm = wolfSSL_CertManagerNew();
...
if(wolfSSL_CertManagerUnload_trust_peers(cm) != SSL_SUCCESS){
    The function did not execute successfully.
}

function wolfSSL_CertManagerVerify

int wolfSSL_CertManagerVerify(
    WOLFSSL_CERT_MANAGER * cm,
    const char * f,
    int format
)

Specifies the certificate to verify with the Certificate Manager context. The format can be SSL_FILETYPE_PEM or SSL_FILETYPE_ASN1.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().
• fname pointer to the name of the file containing the certificates to verify.
• format format of the certificate to verify - either SSL_FILETYPE_ASN1 or SSL_FILETYPE_PEM.

See:

• wolfSSL_CertManagerLoadCA
• wolfSSL_CertManagerVerifyBuffer

Return:

• SSL_SUCCESS If successful.
• ASN_SIG_CONFIRM_E will be returned if the signature could not be verified.
• ASN_SIG_OID_E will be returned if the signature type is not supported.
• CRL_CERT_REVOKED is an error that is returned if this certificate has been revoked.
• CRL_MISSING is an error that is returned if a current issuer CRL is not available.
• ASN_BEFORE_DATE_E will be returned if the current date is before the before date.
• ASN_AFTER_DATE_E will be returned if the current date is after the after date.
• SSL_BAD_FILETYPE will be returned if the file is the wrong format.
• SSL_BAD_FILE will be returned if the file doesn’t exist, can’t be read, or is corrupted.
• MEMORY_E will be returned if an out of memory condition occurs.
• ASN_INPUT_E will be returned if Base16 decoding fails on the file.
• BAD_FUNC_ARG is the error that will be returned if a pointer is not provided.

Example

int ret = 0;
WOLFSSL_CERT_MANAGER* cm;
...

ret = wolfSSL_CertManagerVerify(cm, “path/to/cert-file.pem”,
SSL_FILETYPE_PEM);
if (ret != SSL_SUCCESS) {
    error verifying certificate
}

function wolfSSL_CertManagerVerifyBuffer

int wolfSSL_CertManagerVerifyBuffer(
    WOLFSSL_CERT_MANAGER * cm,
    const unsigned char * buff,
    long sz,
    int format
)

Specifies the certificate buffer to verify with the Certificate Manager context. The format can be SSL_FILETYPE_PEM or SSL_FILETYPE_ASN1.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().
• buff buffer containing the certificates to verify.
• sz size of the buffer, buf.
• format format of the certificate to verify, located in buf - either SSL_FILETYPE_ASN1 or SSL_FILETYPE_PEM.

See:

• wolfSSL_CertManagerLoadCA
• wolfSSL_CertManagerVerify

Return:

• SSL_SUCCESS If successful.
• ASN_SIG_CONFIRM_E will be returned if the signature could not be verified.
• ASN_SIG_OID_E will be returned if the signature type is not supported.
• CRL_CERT_REVOKED is an error that is returned if this certificate has been revoked.
• CRL_MISSING is an error that is returned if a current issuer CRL is not available.
• ASN_BEFORE_DATE_E will be returned if the current date is before the before date.
• ASN_AFTER_DATE_E will be returned if the current date is after the after date.
• SSL_BAD_FILETYPE will be returned if the file is the wrong format.
• SSL_BAD_FILE will be returned if the file doesn’t exist, can’t be read, or is corrupted.
• MEMORY_E will be returned if an out of memory condition occurs.
• ASN_INPUT_E will be returned if Base16 decoding fails on the file.
• BAD_FUNC_ARG is the error that will be returned if a pointer is not provided.

Example

#include <wolfssl/ssl.h>

int ret = 0;
int sz = 0;
WOLFSSL_CERT_MANAGER* cm;
byte certBuff[...];
...

ret = wolfSSL_CertManagerVerifyBuffer(cm, certBuff, sz, SSL_FILETYPE_PEM);
if (ret != SSL_SUCCESS) {
    error verifying certificate
}

function wolfSSL_CertManagerSetVerify

void wolfSSL_CertManagerSetVerify(
    WOLFSSL_CERT_MANAGER * cm,
    VerifyCallback vc
)

The function sets the verifyCallback function in the Certificate Manager. If present, it will be called for each cert loaded. If there is a verification error, the verify callback can be used to over-ride the error.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().
• vc a VerifyCallback function pointer to the callback routine

See: wolfSSL_CertManagerVerify

Return: none No return.

Example

#include <wolfssl/ssl.h>

int myVerify(int preverify, WOLFSSL_X509_STORE_CTX* store)
{ // do custom verification of certificate }

WOLFSSL_CTX* ctx = WOLFSSL_CTX_new(Protocol define);
WOLFSSL_CERT_MANAGER* cm = wolfSSL_CertManagerNew();
...
wolfSSL_CertManagerSetVerify(cm, myVerify);

function wolfSSL_CertManagerEnableCRL

int wolfSSL_CertManagerEnableCRL(
    WOLFSSL_CERT_MANAGER * cm,
    int options
)

Turns on Certificate Revocation List checking when verifying certificates with the Certificate Manager. By default, CRL checking is off. options include WOLFSSL_CRL_CHECKALL which performs CRL checking on each certificate in the chain versus the Leaf certificate only which is the default.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().
• options options to use when enabling the Certification Manager, cm.

See: wolfSSL_CertManagerDisableCRL

Return:

• SSL_SUCCESS If successful the call will return.
• NOT_COMPILED_IN will be returned if wolfSSL was not built with CRL enabled.
• MEMORY_E will be returned if an out of memory condition occurs.
• BAD_FUNC_ARG is the error that will be returned if a pointer is not provided.
• SSL_FAILURE will be returned if the CRL context cannot be initialized properly.

Example

#include <wolfssl/ssl.h>

int ret = 0;
WOLFSSL_CERT_MANAGER* cm;
...

ret = wolfSSL_CertManagerEnableCRL(cm, 0);
if (ret != SSL_SUCCESS) {
    error enabling cert manager
}

...

function wolfSSL_CertManagerDisableCRL

int wolfSSL_CertManagerDisableCRL(
    WOLFSSL_CERT_MANAGER * 
)

Turns off Certificate Revocation List checking when verifying certificates with the Certificate Manager. By default, CRL checking is off. You can use this function to temporarily or permanently disable CRL checking with this Certificate Manager context that previously had CRL checking enabled.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().

See: wolfSSL_CertManagerEnableCRL

Return:

• SSL_SUCCESS If successful the call will return.
• BAD_FUNC_ARG is the error that will be returned if a function pointer is not provided.

Example

#include <wolfssl/ssl.h>

int ret = 0;
WOLFSSL_CERT_MANAGER* cm;
...
ret = wolfSSL_CertManagerDisableCRL(cm);
if (ret != SSL_SUCCESS) {
    error disabling cert manager
}
...

function wolfSSL_CertManagerLoadCRL

int wolfSSL_CertManagerLoadCRL(
    WOLFSSL_CERT_MANAGER * cm,
    const char * path,
    int type,
    int monitor
)

Error checks and passes through to LoadCRL() in order to load the cert into the CRL for revocation checking. An updated CRL can be loaded by first calling wolfSSL_CertManagerFreeCRL, then loading the new CRL.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().
• path a constant char pointer holding the CRL path.
• type type of certificate to be loaded.
• monitor requests monitoring in LoadCRL().

See:

• wolfSSL_CertManagerEnableCRL
• wolfSSL_LoadCRL
• wolfSSL_CertManagerFreeCRL

Return:

• SSL_SUCCESS if there is no error in wolfSSL_CertManagerLoadCRL and if LoadCRL returns successfully.
• BAD_FUNC_ARG if the WOLFSSL_CERT_MANAGER struct is NULL.
• SSL_FATAL_ERROR if wolfSSL_CertManagerEnableCRL returns anything other than SSL_SUCCESS.
• BAD_PATH_ERROR if the path is NULL.
• MEMORY_E if LoadCRL fails to allocate heap memory.

Example

#include <wolfssl/ssl.h>

int wolfSSL_LoadCRL(WOLFSSL* ssl, const char* path, int type,
int monitor);
…
wolfSSL_CertManagerLoadCRL(SSL_CM(ssl), path, type, monitor);

function wolfSSL_CertManagerLoadCRLBuffer

int wolfSSL_CertManagerLoadCRLBuffer(
    WOLFSSL_CERT_MANAGER * cm,
    const unsigned char * buff,
    long sz,
    int type
)

The function loads the CRL file by calling BufferLoadCRL.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure.
• buff a constant byte type and is the buffer.
• sz a long int representing the size of the buffer.
• type a long integer that holds the certificate type.

See:

• BufferLoadCRL
• wolfSSL_CertManagerEnableCRL

Return:

• SSL_SUCCESS returned if the function completed without errors.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER is NULL.
• SSL_FATAL_ERROR returned if there is an error associated with the WOLFSSL_CERT_MANAGER.

Example

#include <wolfssl/ssl.h>

WOLFSSL_CERT_MANAGER* cm;
const unsigned char* buff;
long sz; size of buffer
int type;  cert type
...
int ret = wolfSSL_CertManagerLoadCRLBuffer(cm, buff, sz, type);
if(ret == SSL_SUCCESS){
return ret;
} else {
    Failure case.
}

function wolfSSL_CertManagerSetCRL_Cb

int wolfSSL_CertManagerSetCRL_Cb(
    WOLFSSL_CERT_MANAGER * cm,
    CbMissingCRL cb
)

This function sets the CRL Certificate Manager callback. If HAVE_CRL is defined and a matching CRL record is not found then the cbMissingCRL is called (set via wolfSSL_CertManagerSetCRL_Cb). This allows you to externally retrieve the CRL and load it.

Parameters:

• cm the WOLFSSL_CERT_MANAGER structure holding the information for the certificate.
• cb a function pointer to (*CbMissingCRL) that is set to the cbMissingCRL member of the WOLFSSL_CERT_MANAGER.

See:

• CbMissingCRL
• wolfSSL_SetCRL_Cb

Return:

• SSL_SUCCESS returned upon successful execution of the function and subroutines.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER structure is NULL.

Example

#include <wolfssl/ssl.h>

WOLFSSL_CTX* ctx = wolfSSL_CTX_new(protocol method);
WOLFSSL* ssl = wolfSSL_new(ctx);
…
void cb(const char* url){
    Function body.
}
…
CbMissingCRL cb = CbMissingCRL;
…
if(ctx){
    return wolfSSL_CertManagerSetCRL_Cb(SSL_CM(ssl), cb);
}

function wolfSSL_CertManagerSetCRLUpdate_Cb

int wolfSSL_CertManagerSetCRLUpdate_Cb(
    WOLFSSL_CERT_MANAGER * cm,
    CbUpdateCRL cb
)

This function sets the CRL Update callback. If HAVE_CRL and HAVE_CRL_UPDATE_CB is defined , and an entry with the same issuer and a lower CRL number exists when a CRL is added, then the CbUpdateCRL is called with the details of the existing entry and the new one replacing it.

Parameters:

• cm the WOLFSSL_CERT_MANAGER structure holding the information for the certificate.
• cb a function pointer to (CbUpdateCRL) that is set to the cbUpdateCRL member of the WOLFSSL_CERT_MANAGER. Signature requirement: void (CbUpdateCRL)(CrlInfo old, CrlInfo new);

See: CbUpdateCRL

Return:

• SSL_SUCCESS returned upon successful execution of the function and subroutines.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER structure is NULL.

Example

#include <wolfssl/ssl.h>

WOLFSSL_CTX* ctx = wolfSSL_CTX_new(protocol method);
WOLFSSL* ssl = wolfSSL_new(ctx);
…
void cb(CrlInfo *old, CrlInfo *new){
    Function body.
}
…
CbUpdateCRL cb = CbUpdateCRL;
…
if(ctx){
    return wolfSSL_CertManagerSetCRLUpdate_Cb(SSL_CM(ssl), cb);
}

function wolfSSL_CertManagerGetCRLInfo

int wolfSSL_CertManagerGetCRLInfo(
    WOLFSSL_CERT_MANAGER * cm,
    CrlInfo * info,
    const byte * buff,
    long sz,
    int type
)

This function yields a structure with parsed CRL information from an encoded CRL buffer.

Parameters:

• cm the WOLFSSL_CERT_MANAGER structure..
• info pointer to caller managed CrlInfo structure that will receive the CRL information.
• buff input buffer containing encoded CRL.
• sz the length in bytes of the input CRL data in buff.
• type WOLFSSL_FILETYPE_PEM or WOLFSSL_FILETYPE_DER
• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().

See:

• CbUpdateCRL
• wolfSSL_SetCRL_Cb
• wolfSSL_CertManagerLoadCRL

Return:

• SSL_SUCCESS returned upon successful execution of the function and subroutines.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER structure is NULL.
• SSL_SUCCESS returned upon successful execution of the function and subroutines.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER structure is NULL.

Example

#include <wolfssl/ssl.h>

CrlInfo info;
WOLFSSL_CERT_MANAGER* cm = NULL;

cm = wolfSSL_CertManagerNew();

// Read crl data from file into buffer

wolfSSL_CertManagerGetCRLInfo(cm, &info, crlData, crlDataLen,
                              WOLFSSL_FILETYPE_PEM);

This function frees the CRL stored in the Cert Manager. An application can update the CRL by calling wolfSSL_CertManagerFreeCRL and then loading the new CRL.

Example

#include <wolfssl/ssl.h>

const char* crl1     = "./certs/crl/crl.pem";
WOLFSSL_CERT_MANAGER* cm = NULL;

cm = wolfSSL_CertManagerNew();
wolfSSL_CertManagerLoadCRL(cm, crl1, WOLFSSL_FILETYPE_PEM, 0);
…
wolfSSL_CertManagerFreeCRL(cm);

function wolfSSL_CertManagerCheckOCSP

int wolfSSL_CertManagerCheckOCSP(
    WOLFSSL_CERT_MANAGER * cm,
    unsigned char * der,
    int sz
)

The function enables the WOLFSSL_CERT_MANAGER’s member, ocspEnabled to signify that the OCSP check option is enabled.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().
• der a byte pointer to the certificate.
• sz an int type representing the size of the DER cert.

See:

• ParseCertRelative
• CheckCertOCSP

Return:

• SSL_SUCCESS returned on successful execution of the function. The ocspEnabled member of the WOLFSSL_CERT_MANAGER is enabled.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER structure is NULL or if an argument value that is not allowed is passed to a subroutine.
• MEMORY_E returned if there is an error allocating memory within this function or a subroutine.

Example

#import <wolfssl/ssl.h>

WOLFSSL* ssl = wolfSSL_new(ctx);
byte* der;
int sz; size of der
...
if(wolfSSL_CertManagerCheckOCSP(cm, der, sz) != SSL_SUCCESS){
 Failure case.
}

function wolfSSL_CertManagerEnableOCSP

int wolfSSL_CertManagerEnableOCSP(
    WOLFSSL_CERT_MANAGER * cm,
    int options
)

Turns on OCSP if it’s turned off and if compiled with the set option available.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, created using wolfSSL_CertManagerNew().
• options used to set values in WOLFSSL_CERT_MANAGER struct.

See: wolfSSL_CertManagerNew

Return:

• SSL_SUCCESS returned if the function call is successful.
• BAD_FUNC_ARG if cm struct is NULL.
• MEMORY_E if WOLFSSL_OCSP struct value is NULL.
• SSL_FAILURE initialization of WOLFSSL_OCSP struct fails to initialize.
• NOT_COMPILED_IN build not compiled with correct feature enabled.

Example

#include <wolfssl/ssl.h>

WOLFSSL_CTX* ctx = wolfSSL_CTX_new(protocol method);
WOLFSSL* ssl = wolfSSL_new(ctx);
WOLFSSL_CERT_MANAGER* cm = wolfSSL_CertManagerNew();
int options;
…
if(wolfSSL_CertManagerEnableOCSP(SSL_CM(ssl), options) != SSL_SUCCESS){
    Failure case.
}

function wolfSSL_CertManagerDisableOCSP

int wolfSSL_CertManagerDisableOCSP(
    WOLFSSL_CERT_MANAGER * 
)

Disables OCSP certificate revocation.

Parameters:

• ssl - a pointer to a WOLFSSL structure, created using wolfSSL_new().

See: wolfSSL_DisableCRL

Return:

• SSL_SUCCESS wolfSSL_CertMangerDisableCRL successfully disabled the crlEnabled member of the WOLFSSL_CERT_MANAGER structure.
• BAD_FUNC_ARG the WOLFSSL structure was NULL.

Example

#include <wolfssl/ssl.h>

WOLFSSL_CTX* ctx = wolfSSL_CTX_new(method);
WOLFSSL* ssl = wolfSSL_new(ctx);
...
if(wolfSSL_CertManagerDisableOCSP(ssl) != SSL_SUCCESS){
    Fail case.
}

function wolfSSL_CertManagerSetOCSPOverrideURL

int wolfSSL_CertManagerSetOCSPOverrideURL(
    WOLFSSL_CERT_MANAGER * cm,
    const char * url
)

The function copies the url to the ocspOverrideURL member of the WOLFSSL_CERT_MANAGER structure.

Parameters:

• ssl a pointer to a WOLFSSL structure, created using wolfSSL_new().

See:

• ocspOverrideURL
• wolfSSL_SetOCSP_OverrideURL

Return:

• SSL_SUCCESS the function was able to execute as expected.
• BAD_FUNC_ARG the WOLFSSL_CERT_MANAGER struct is NULL.
• MEMEORY_E Memory was not able to be allocated for the ocspOverrideURL member of the certificate manager.

Example

#include <wolfssl/ssl.h>
WOLFSSL_CERT_MANAGER* cm = wolfSSL_CertManagerNew();
const char* url;
…
int wolfSSL_SetOCSP_OverrideURL(WOLFSSL* ssl, const char* url)
…
if(wolfSSL_CertManagerSetOCSPOverrideURL(SSL_CM(ssl), url) != SSL_SUCCESS){
    Failure case.
}

function wolfSSL_CertManagerSetOCSP_Cb

int wolfSSL_CertManagerSetOCSP_Cb(
    WOLFSSL_CERT_MANAGER * cm,
    CbOCSPIO ioCb,
    CbOCSPRespFree respFreeCb,
    void * ioCbCtx
)

The function sets the OCSP callback in the WOLFSSL_CERT_MANAGER.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure.
• ioCb a function pointer of type CbOCSPIO.
• respFreeCb - a function pointer of type CbOCSPRespFree.
• ioCbCtx - a void pointer variable to the I/O callback user registered context.

See:

• wolfSSL_CertManagerSetOCSPOverrideURL
• wolfSSL_CertManagerCheckOCSP
• wolfSSL_CertManagerEnableOCSPStapling
• wolfSSL_EnableOCSP
• wolfSSL_DisableOCSP
• wolfSSL_SetOCSP_Cb

Return:

• SSL_SUCCESS returned on successful execution. The arguments are saved in the WOLFSSL_CERT_MANAGER structure.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER is NULL.

Example

#include <wolfssl/ssl.h>

wolfSSL_SetOCSP_Cb(WOLFSSL* ssl, CbOCSPIO ioCb,
CbOCSPRespFree respFreeCb, void* ioCbCtx){
…
return wolfSSL_CertManagerSetOCSP_Cb(SSL_CM(ssl), ioCb, respFreeCb, ioCbCtx);

function wolfSSL_CertManagerEnableOCSPStapling

int wolfSSL_CertManagerEnableOCSPStapling(
    WOLFSSL_CERT_MANAGER * cm
)

This function turns on OCSP stapling if it is not turned on as well as set the options.

Parameters:

• cm a pointer to a WOLFSSL_CERT_MANAGER structure, a member of the WOLFSSL_CTX structure.

See: wolfSSL_CTX_EnableOCSPStapling

Return:

• SSL_SUCCESS returned if there were no errors and the function executed successfully.
• BAD_FUNC_ARG returned if the WOLFSSL_CERT_MANAGER structure is NULL or otherwise if there was a unpermitted argument value passed to a subroutine.
• MEMORY_E returned if there was an issue allocating memory.
• SSL_FAILURE returned if the initialization of the OCSP structure failed.
• NOT_COMPILED_IN returned if wolfSSL was not compiled with HAVE_CERTIFICATE_STATUS_REQUEST option.

Example

int wolfSSL_CTX_EnableOCSPStapling(WOLFSSL_CTX* ctx){
…
return wolfSSL_CertManagerEnableOCSPStapling(ctx->cm);

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Updated on 2024-12-20 at 01:22:24 +0000