static CURLcode pkp_pin_peer_pubkey(struct SessionHandle *data,
gnutls_x509_crt_t cert,
const char *pinnedpubkey)
{
/* Scratch */
size_t len1 = 0, len2 = 0;
unsigned char *buff1 = NULL;
gnutls_pubkey_t key = NULL;
/* Result is returned to caller */
int ret = 0;
CURLcode result = CURLE_SSL_PINNEDPUBKEYNOTMATCH;
/* if a path wasn't specified, don't pin */
if(NULL == pinnedpubkey)
return CURLE_OK;
if(NULL == cert)
return result;
do {
/* Begin Gyrations to get the public key */
gnutls_pubkey_init(&key);
ret = gnutls_pubkey_import_x509(key, cert, 0);
if(ret < 0)
break; /* failed */
ret = gnutls_pubkey_export(key, GNUTLS_X509_FMT_DER, NULL, &len1);
if(ret != GNUTLS_E_SHORT_MEMORY_BUFFER || len1 == 0)
break; /* failed */
buff1 = malloc(len1);
if(NULL == buff1)
break; /* failed */
len2 = len1;
ret = gnutls_pubkey_export(key, GNUTLS_X509_FMT_DER, buff1, &len2);
if(ret < 0 || len1 != len2)
break; /* failed */
/* End Gyrations */
/* The one good exit point */
result = Curl_pin_peer_pubkey(data, pinnedpubkey, buff1, len1);
} while(0);
if(NULL != key)
gnutls_pubkey_deinit(key);
Curl_safefree(buff1);
return result;
}
static CURLcode
mbed_connect_step2(struct connectdata *conn,
int sockindex)
{
int ret;
struct SessionHandle *data = conn->data;
struct ssl_connect_data* connssl = &conn->ssl[sockindex];
const mbedtls_x509_crt *peercert;
#ifdef HAS_ALPN
const char* next_protocol;
#endif
char errorbuf[128];
errorbuf[0] = 0;
conn->recv[sockindex] = mbed_recv;
conn->send[sockindex] = mbed_send;
ret = mbedtls_ssl_handshake(&connssl->ssl);
if(ret == MBEDTLS_ERR_SSL_WANT_READ) {
connssl->connecting_state = ssl_connect_2_reading;
return CURLE_OK;
}
else if(ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
connssl->connecting_state = ssl_connect_2_writing;
return CURLE_OK;
}
else if(ret) {
#ifdef MBEDTLS_ERROR_C
mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
#endif /* MBEDTLS_ERROR_C */
failf(data, "ssl_handshake returned - mbedTLS: (-0x%04X) %s",
-ret, errorbuf);
return CURLE_SSL_CONNECT_ERROR;
}
infof(data, "mbedTLS: Handshake complete, cipher is %s\n",
mbedtls_ssl_get_ciphersuite(&conn->ssl[sockindex].ssl)
);
ret = mbedtls_ssl_get_verify_result(&conn->ssl[sockindex].ssl);
if(ret && data->set.ssl.verifypeer) {
if(ret & MBEDTLS_X509_BADCERT_EXPIRED)
failf(data, "Cert verify failed: BADCERT_EXPIRED");
if(ret & MBEDTLS_X509_BADCERT_REVOKED) {
failf(data, "Cert verify failed: BADCERT_REVOKED");
return CURLE_SSL_CACERT;
}
if(ret & MBEDTLS_X509_BADCERT_CN_MISMATCH)
failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
if(ret & MBEDTLS_X509_BADCERT_NOT_TRUSTED)
failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
return CURLE_PEER_FAILED_VERIFICATION;
}
peercert = mbedtls_ssl_get_peer_cert(&connssl->ssl);
if(peercert && data->set.verbose) {
const size_t bufsize = 16384;
char *buffer = malloc(bufsize);
if(!buffer)
return CURLE_OUT_OF_MEMORY;
if(mbedtls_x509_crt_info(buffer, bufsize, "* ", peercert) > 0)
infof(data, "Dumping cert info:\n%s\n", buffer);
else
infof(data, "Unable to dump certificate information.\n");
free(buffer);
}
if(data->set.str[STRING_SSL_PINNEDPUBLICKEY]) {
int size;
CURLcode result;
mbedtls_x509_crt *p;
unsigned char pubkey[PUB_DER_MAX_BYTES];
if(!peercert || !peercert->raw.p || !peercert->raw.len) {
failf(data, "Failed due to missing peer certificate");
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
p = calloc(1, sizeof(*p));
if(!p)
return CURLE_OUT_OF_MEMORY;
mbedtls_x509_crt_init(p);
/* Make a copy of our const peercert because mbedtls_pk_write_pubkey_der
needs a non-const key, for now.
https://github.com/ARMmbed/mbedtls/issues/396 */
if(mbedtls_x509_crt_parse_der(p, peercert->raw.p, peercert->raw.len)) {
failf(data, "Failed copying peer certificate");
mbedtls_x509_crt_free(p);
free(p);
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
size = mbedtls_pk_write_pubkey_der(&p->pk, pubkey, PUB_DER_MAX_BYTES);
if(size <= 0) {
failf(data, "Failed copying public key from peer certificate");
mbedtls_x509_crt_free(p);
free(p);
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
/* mbedtls_pk_write_pubkey_der writes data at the end of the buffer. */
result = Curl_pin_peer_pubkey(data,
data->set.str[STRING_SSL_PINNEDPUBLICKEY],
&pubkey[PUB_DER_MAX_BYTES - size], size);
if(result) {
mbedtls_x509_crt_free(p);
free(p);
return result;
}
mbedtls_x509_crt_free(p);
free(p);
}
#ifdef HAS_ALPN
if(conn->bits.tls_enable_alpn) {
next_protocol = mbedtls_ssl_get_alpn_protocol(&connssl->ssl);
if(next_protocol) {
infof(data, "ALPN, server accepted to use %s\n", next_protocol);
#ifdef USE_NGHTTP2
if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
NGHTTP2_PROTO_VERSION_ID_LEN) &&
!next_protocol[NGHTTP2_PROTO_VERSION_ID_LEN]) {
conn->negnpn = CURL_HTTP_VERSION_2;
}
else
#endif
if(!strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH) &&
!next_protocol[ALPN_HTTP_1_1_LENGTH]) {
conn->negnpn = CURL_HTTP_VERSION_1_1;
}
}
else {
infof(data, "ALPN, server did not agree to a protocol\n");
}
}
#endif
connssl->connecting_state = ssl_connect_3;
infof(data, "SSL connected\n");
return CURLE_OK;
}
static CURLcode
polarssl_connect_step2(struct connectdata *conn,
int sockindex)
{
int ret;
struct Curl_easy *data = conn->data;
struct ssl_connect_data* connssl = &conn->ssl[sockindex];
char buffer[1024];
const char * const pinnedpubkey = SSL_IS_PROXY() ?
data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
char errorbuf[128];
errorbuf[0] = 0;
conn->recv[sockindex] = polarssl_recv;
conn->send[sockindex] = polarssl_send;
ret = ssl_handshake(&BACKEND->ssl);
switch(ret) {
case 0:
break;
case POLARSSL_ERR_NET_WANT_READ:
connssl->connecting_state = ssl_connect_2_reading;
return CURLE_OK;
case POLARSSL_ERR_NET_WANT_WRITE:
connssl->connecting_state = ssl_connect_2_writing;
return CURLE_OK;
default:
error_strerror(ret, errorbuf, sizeof(errorbuf));
failf(data, "ssl_handshake returned - PolarSSL: (-0x%04X) %s",
-ret, errorbuf);
return CURLE_SSL_CONNECT_ERROR;
}
infof(data, "PolarSSL: Handshake complete, cipher is %s\n",
ssl_get_ciphersuite(&BACKEND->ssl) );
ret = ssl_get_verify_result(&BACKEND->ssl);
if(ret && SSL_CONN_CONFIG(verifypeer)) {
if(ret & BADCERT_EXPIRED)
failf(data, "Cert verify failed: BADCERT_EXPIRED");
if(ret & BADCERT_REVOKED) {
failf(data, "Cert verify failed: BADCERT_REVOKED");
return CURLE_SSL_CACERT;
}
if(ret & BADCERT_CN_MISMATCH)
failf(data, "Cert verify failed: BADCERT_CN_MISMATCH");
if(ret & BADCERT_NOT_TRUSTED)
failf(data, "Cert verify failed: BADCERT_NOT_TRUSTED");
return CURLE_PEER_FAILED_VERIFICATION;
}
if(ssl_get_peer_cert(&(BACKEND->ssl))) {
/* If the session was resumed, there will be no peer certs */
memset(buffer, 0, sizeof(buffer));
if(x509_crt_info(buffer, sizeof(buffer), (char *)"* ",
ssl_get_peer_cert(&(BACKEND->ssl))) != -1)
infof(data, "Dumping cert info:\n%s\n", buffer);
}
/* adapted from mbedtls.c */
if(pinnedpubkey) {
int size;
CURLcode result;
x509_crt *p;
unsigned char pubkey[PUB_DER_MAX_BYTES];
const x509_crt *peercert;
peercert = ssl_get_peer_cert(&BACKEND->ssl);
if(!peercert || !peercert->raw.p || !peercert->raw.len) {
failf(data, "Failed due to missing peer certificate");
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
p = calloc(1, sizeof(*p));
if(!p)
return CURLE_OUT_OF_MEMORY;
x509_crt_init(p);
/* Make a copy of our const peercert because pk_write_pubkey_der
needs a non-const key, for now.
https://github.com/ARMmbed/mbedtls/issues/396 */
if(x509_crt_parse_der(p, peercert->raw.p, peercert->raw.len)) {
failf(data, "Failed copying peer certificate");
x509_crt_free(p);
free(p);
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
size = pk_write_pubkey_der(&p->pk, pubkey, PUB_DER_MAX_BYTES);
if(size <= 0) {
failf(data, "Failed copying public key from peer certificate");
x509_crt_free(p);
free(p);
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
/* pk_write_pubkey_der writes data at the end of the buffer. */
result = Curl_pin_peer_pubkey(data,
pinnedpubkey,
&pubkey[PUB_DER_MAX_BYTES - size], size);
if(result) {
x509_crt_free(p);
free(p);
return result;
}
x509_crt_free(p);
free(p);
}
#ifdef HAS_ALPN
if(conn->bits.tls_enable_alpn) {
const char *next_protocol = ssl_get_alpn_protocol(&BACKEND->ssl);
if(next_protocol != NULL) {
infof(data, "ALPN, server accepted to use %s\n", next_protocol);
#ifdef USE_NGHTTP2
if(!strncmp(next_protocol, NGHTTP2_PROTO_VERSION_ID,
NGHTTP2_PROTO_VERSION_ID_LEN)) {
conn->negnpn = CURL_HTTP_VERSION_2;
}
else
#endif
if(!strncmp(next_protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH)) {
conn->negnpn = CURL_HTTP_VERSION_1_1;
}
}
else
infof(data, "ALPN, server did not agree to a protocol\n");
}
#endif
connssl->connecting_state = ssl_connect_3;
infof(data, "SSL connected\n");
return CURLE_OK;
}
static CURLcode
cyassl_connect_step2(struct connectdata *conn,
int sockindex)
{
int ret = -1;
struct Curl_easy *data = conn->data;
struct ssl_connect_data* connssl = &conn->ssl[sockindex];
const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
conn->host.name;
const char * const dispname = SSL_IS_PROXY() ?
conn->http_proxy.host.dispname : conn->host.dispname;
const char * const pinnedpubkey = SSL_IS_PROXY() ?
data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
conn->recv[sockindex] = cyassl_recv;
conn->send[sockindex] = cyassl_send;
/* Enable RFC2818 checks */
if(SSL_CONN_CONFIG(verifyhost)) {
ret = CyaSSL_check_domain_name(BACKEND->handle, hostname);
if(ret == SSL_FAILURE)
return CURLE_OUT_OF_MEMORY;
}
ret = SSL_connect(BACKEND->handle);
if(ret != 1) {
char error_buffer[CYASSL_MAX_ERROR_SZ];
int detail = SSL_get_error(BACKEND->handle, ret);
if(SSL_ERROR_WANT_READ == detail) {
connssl->connecting_state = ssl_connect_2_reading;
return CURLE_OK;
}
else if(SSL_ERROR_WANT_WRITE == detail) {
connssl->connecting_state = ssl_connect_2_writing;
return CURLE_OK;
}
/* There is no easy way to override only the CN matching.
* This will enable the override of both mismatching SubjectAltNames
* as also mismatching CN fields */
else if(DOMAIN_NAME_MISMATCH == detail) {
#if 1
failf(data, "\tsubject alt name(s) or common name do not match \"%s\"\n",
dispname);
return CURLE_PEER_FAILED_VERIFICATION;
#else
/* When the CyaSSL_check_domain_name() is used and you desire to continue
* on a DOMAIN_NAME_MISMATCH, i.e. 'conn->ssl_config.verifyhost == 0',
* CyaSSL version 2.4.0 will fail with an INCOMPLETE_DATA error. The only
* way to do this is currently to switch the CyaSSL_check_domain_name()
* in and out based on the 'conn->ssl_config.verifyhost' value. */
if(SSL_CONN_CONFIG(verifyhost)) {
failf(data,
"\tsubject alt name(s) or common name do not match \"%s\"\n",
dispname);
return CURLE_PEER_FAILED_VERIFICATION;
}
else {
infof(data,
"\tsubject alt name(s) and/or common name do not match \"%s\"\n",
dispname);
return CURLE_OK;
}
#endif
}
#if LIBCYASSL_VERSION_HEX >= 0x02007000 /* 2.7.0 */
else if(ASN_NO_SIGNER_E == detail) {
if(SSL_CONN_CONFIG(verifypeer)) {
failf(data, "\tCA signer not available for verification\n");
return CURLE_SSL_CACERT_BADFILE;
}
else {
/* Just continue with a warning if no strict certificate
verification is required. */
infof(data, "CA signer not available for verification, "
"continuing anyway\n");
}
}
#endif
else {
failf(data, "SSL_connect failed with error %d: %s", detail,
ERR_error_string(detail, error_buffer));
return CURLE_SSL_CONNECT_ERROR;
}
}
if(pinnedpubkey) {
#ifdef KEEP_PEER_CERT
X509 *x509;
const char *x509_der;
int x509_der_len;
curl_X509certificate x509_parsed;
curl_asn1Element *pubkey;
CURLcode result;
x509 = SSL_get_peer_certificate(BACKEND->handle);
if(!x509) {
failf(data, "SSL: failed retrieving server certificate");
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
x509_der = (const char *)CyaSSL_X509_get_der(x509, &x509_der_len);
if(!x509_der) {
failf(data, "SSL: failed retrieving ASN.1 server certificate");
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
memset(&x509_parsed, 0, sizeof(x509_parsed));
if(Curl_parseX509(&x509_parsed, x509_der, x509_der + x509_der_len))
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
pubkey = &x509_parsed.subjectPublicKeyInfo;
if(!pubkey->header || pubkey->end <= pubkey->header) {
failf(data, "SSL: failed retrieving public key from server certificate");
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
result = Curl_pin_peer_pubkey(data,
pinnedpubkey,
(const unsigned char *)pubkey->header,
(size_t)(pubkey->end - pubkey->header));
if(result) {
failf(data, "SSL: public key does not match pinned public key!");
return result;
}
#else
failf(data, "Library lacks pinning support built-in");
return CURLE_NOT_BUILT_IN;
#endif
}
#ifdef HAVE_ALPN
if(conn->bits.tls_enable_alpn) {
int rc;
char *protocol = NULL;
unsigned short protocol_len = 0;
rc = wolfSSL_ALPN_GetProtocol(BACKEND->handle, &protocol, &protocol_len);
if(rc == SSL_SUCCESS) {
infof(data, "ALPN, server accepted to use %.*s\n", protocol_len,
protocol);
if(protocol_len == ALPN_HTTP_1_1_LENGTH &&
!memcmp(protocol, ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH))
conn->negnpn = CURL_HTTP_VERSION_1_1;
#ifdef USE_NGHTTP2
else if(data->set.httpversion >= CURL_HTTP_VERSION_2 &&
protocol_len == NGHTTP2_PROTO_VERSION_ID_LEN &&
!memcmp(protocol, NGHTTP2_PROTO_VERSION_ID,
NGHTTP2_PROTO_VERSION_ID_LEN))
conn->negnpn = CURL_HTTP_VERSION_2;
#endif
else
infof(data, "ALPN, unrecognized protocol %.*s\n", protocol_len,
protocol);
Curl_multiuse_state(conn, conn->negnpn == CURL_HTTP_VERSION_2 ?
BUNDLE_MULTIPLEX : BUNDLE_NO_MULTIUSE);
}
else if(rc == SSL_ALPN_NOT_FOUND)
infof(data, "ALPN, server did not agree to a protocol\n");
else {
failf(data, "ALPN, failure getting protocol, error %d", rc);
return CURLE_SSL_CONNECT_ERROR;
}
}
#endif /* HAVE_ALPN */
connssl->connecting_state = ssl_connect_3;
#if (LIBCYASSL_VERSION_HEX >= 0x03009010)
infof(data, "SSL connection using %s / %s\n",
wolfSSL_get_version(BACKEND->handle),
wolfSSL_get_cipher_name(BACKEND->handle));
#else
infof(data, "SSL connected\n");
#endif
return CURLE_OK;
}
static CURLcode gskit_connect_step3(struct connectdata *conn, int sockindex)
{
struct Curl_easy *data = conn->data;
struct ssl_connect_data *connssl = &conn->ssl[sockindex];
const gsk_cert_data_elem *cdev;
int cdec;
const gsk_cert_data_elem *p;
const char *cert = (const char *) NULL;
const char *certend;
const char *ptr;
int i;
CURLcode result;
/* SSL handshake done: gather certificate info and verify host. */
if(gskit_status(data, gsk_attribute_get_cert_info(connssl->handle,
GSK_PARTNER_CERT_INFO,
&cdev, &cdec),
"gsk_attribute_get_cert_info()", CURLE_SSL_CONNECT_ERROR) ==
CURLE_OK) {
infof(data, "Server certificate:\n");
p = cdev;
for(i = 0; i++ < cdec; p++)
switch (p->cert_data_id) {
case CERT_BODY_DER:
cert = p->cert_data_p;
certend = cert + cdev->cert_data_l;
break;
case CERT_DN_PRINTABLE:
infof(data, "\t subject: %.*s\n", p->cert_data_l, p->cert_data_p);
break;
case CERT_ISSUER_DN_PRINTABLE:
infof(data, "\t issuer: %.*s\n", p->cert_data_l, p->cert_data_p);
break;
case CERT_VALID_FROM:
infof(data, "\t start date: %.*s\n", p->cert_data_l, p->cert_data_p);
break;
case CERT_VALID_TO:
infof(data, "\t expire date: %.*s\n", p->cert_data_l, p->cert_data_p);
break;
}
}
/* Verify host. */
result = Curl_verifyhost(conn, cert, certend);
if(result)
return result;
/* The only place GSKit can get the whole CA chain is a validation
callback where no user data pointer is available. Therefore it's not
possible to copy this chain into our structures for CAINFO.
However the server certificate may be available, thus we can return
info about it. */
if(data->set.ssl.certinfo) {
result = Curl_ssl_init_certinfo(data, 1);
if(result)
return result;
if(cert) {
result = Curl_extract_certinfo(conn, 0, cert, certend);
if(result)
return result;
}
}
/* Check pinned public key. */
ptr = data->set.str[STRING_SSL_PINNEDPUBLICKEY];
if(!result && ptr) {
curl_X509certificate x509;
curl_asn1Element *p;
if(!cert)
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
Curl_parseX509(&x509, cert, certend);
p = &x509.subjectPublicKeyInfo;
result = Curl_pin_peer_pubkey(data, ptr, p->header, p->end - p->header);
if(result) {
failf(data, "SSL: public key does not match pinned public key!");
return result;
}
}
connssl->connecting_state = ssl_connect_done;
return CURLE_OK;
}
static CURLcode
cyassl_connect_step2(struct connectdata *conn,
int sockindex)
{
int ret = -1;
struct SessionHandle *data = conn->data;
struct ssl_connect_data* conssl = &conn->ssl[sockindex];
conn->recv[sockindex] = cyassl_recv;
conn->send[sockindex] = cyassl_send;
/* Enable RFC2818 checks */
if(data->set.ssl.verifyhost) {
ret = CyaSSL_check_domain_name(conssl->handle, conn->host.name);
if(ret == SSL_FAILURE)
return CURLE_OUT_OF_MEMORY;
}
ret = SSL_connect(conssl->handle);
if(ret != 1) {
char error_buffer[CYASSL_MAX_ERROR_SZ];
int detail = SSL_get_error(conssl->handle, ret);
if(SSL_ERROR_WANT_READ == detail) {
conssl->connecting_state = ssl_connect_2_reading;
return CURLE_OK;
}
else if(SSL_ERROR_WANT_WRITE == detail) {
conssl->connecting_state = ssl_connect_2_writing;
return CURLE_OK;
}
/* There is no easy way to override only the CN matching.
* This will enable the override of both mismatching SubjectAltNames
* as also mismatching CN fields */
else if(DOMAIN_NAME_MISMATCH == detail) {
#if 1
failf(data, "\tsubject alt name(s) or common name do not match \"%s\"\n",
conn->host.dispname);
return CURLE_PEER_FAILED_VERIFICATION;
#else
/* When the CyaSSL_check_domain_name() is used and you desire to continue
* on a DOMAIN_NAME_MISMATCH, i.e. 'data->set.ssl.verifyhost == 0',
* CyaSSL version 2.4.0 will fail with an INCOMPLETE_DATA error. The only
* way to do this is currently to switch the CyaSSL_check_domain_name()
* in and out based on the 'data->set.ssl.verifyhost' value. */
if(data->set.ssl.verifyhost) {
failf(data,
"\tsubject alt name(s) or common name do not match \"%s\"\n",
conn->host.dispname);
return CURLE_PEER_FAILED_VERIFICATION;
}
else {
infof(data,
"\tsubject alt name(s) and/or common name do not match \"%s\"\n",
conn->host.dispname);
return CURLE_OK;
}
#endif
}
#if LIBCYASSL_VERSION_HEX >= 0x02007000 /* 2.7.0 */
else if(ASN_NO_SIGNER_E == detail) {
if(data->set.ssl.verifypeer) {
failf(data, "\tCA signer not available for verification\n");
return CURLE_SSL_CACERT_BADFILE;
}
else {
/* Just continue with a warning if no strict certificate
verification is required. */
infof(data, "CA signer not available for verification, "
"continuing anyway\n");
}
}
#endif
else {
failf(data, "SSL_connect failed with error %d: %s", detail,
ERR_error_string(detail, error_buffer));
return CURLE_SSL_CONNECT_ERROR;
}
}
if(data->set.str[STRING_SSL_PINNEDPUBLICKEY]) {
X509 *x509;
const char *x509_der;
int x509_der_len;
curl_X509certificate x509_parsed;
curl_asn1Element *pubkey;
CURLcode result;
x509 = SSL_get_peer_certificate(conssl->handle);
if(!x509) {
failf(data, "SSL: failed retrieving server certificate");
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
x509_der = (const char *)CyaSSL_X509_get_der(x509, &x509_der_len);
if(!x509_der) {
failf(data, "SSL: failed retrieving ASN.1 server certificate");
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
memset(&x509_parsed, 0, sizeof x509_parsed);
Curl_parseX509(&x509_parsed, x509_der, x509_der + x509_der_len);
pubkey = &x509_parsed.subjectPublicKeyInfo;
if(!pubkey->header || pubkey->end <= pubkey->header) {
failf(data, "SSL: failed retrieving public key from server certificate");
return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
}
result = Curl_pin_peer_pubkey(data->set.str[STRING_SSL_PINNEDPUBLICKEY],
(const unsigned char *)pubkey->header,
(size_t)(pubkey->end - pubkey->header));
if(result) {
failf(data, "SSL: public key does not match pinned public key!");
return result;
}
}
conssl->connecting_state = ssl_connect_3;
infof(data, "SSL connected\n");
return CURLE_OK;
}