144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
/*
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This file is part of libcapwap.
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libcapwap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libcapwap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <gnutls/gnutls.h>
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#include "dtls_gnutls.h"
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#include "conn.h"
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#include "cw_log.h"
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struct dtls_gnutls_data{
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gnutls_session_t session;
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gnutls_certificate_credentials_t x509_cred;
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gnutls_priority_t priority_cache;
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};
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void dtls_gnutls_data_destroy(struct dtls_gnutls_data *d)
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{
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free(d);
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}
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struct dtls_gnutls_data * dtls_gnutls_data_create(struct conn * conn)
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{
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struct dtls_gnutls_data * d = malloc(sizeof(struct dtls_gnutls_data));
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if (!d)
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return 0;
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gnutls_certificate_allocate_credentials(&d->x509_cred);
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int rc;
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/* Set credentials */
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rc = gnutls_certificate_set_x509_key_file(d->x509_cred, conn->dtls_cert_file,
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conn->dtls_key_file,
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GNUTLS_X509_FMT_PEM);
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if (rc<0){
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cw_log(LOG_ERR,"DTLS - Can't set cert/key: %s",gnutls_strerror(rc));
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dtls_gnutls_data_destroy(d);
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return 0;
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}
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/* Set ciphers */
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const char * errpos;
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rc = gnutls_priority_init(&d->priority_cache,
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conn->dtls_cipher,
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&errpos);
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if (rc<0){
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cw_log(LOG_ERR,"DTLS - Can't init ciphers '%s' at '%s' : %s",conn->dtls_cipher,errpos,gnutls_strerror(rc));
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dtls_gnutls_data_destroy(d);
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return 0;
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}
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rc = gnutls_init(&d->session, GNUTLS_SERVER );
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if (rc<0){
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cw_log(LOG_ERR,"DTLS - Can't init session: %s",gnutls_strerror(rc));
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dtls_gnutls_data_destroy(d);
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return 0;
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}
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gnutls_transport_set_ptr(d->session,conn);
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rc = gnutls_priority_set(d->session, d->priority_cache);
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if (rc<0){
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cw_log(LOG_ERR,"DTLS - Can't set priority: %s",gnutls_strerror(rc));
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dtls_gnutls_data_destroy(d);
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return 0;
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}
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rc = gnutls_credentials_set(d->session, GNUTLS_CRD_CERTIFICATE,
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d->x509_cred);
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if (rc<0){
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cw_log(LOG_ERR,"DTLS - Can't set credentials: %s",gnutls_strerror(rc));
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dtls_gnutls_data_destroy(d);
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return 0;
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}
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gnutls_transport_set_pull_function(d->session,dtls_gnutls_bio_read);
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gnutls_transport_set_push_function(d->session,dtls_gnutls_bio_write);
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return d;
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}
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int dtls_gnutls_accept(struct conn * conn)
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{
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struct dtls_gnutls_data *d;
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d = dtls_gnutls_data_create(conn);
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if (!d)
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return 0;
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int rc;
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do {
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rc = gnutls_handshake(d->session);
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}while(rc == GNUTLS_E_AGAIN);
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cw_log(LOG_ERR,"DTLS - Can't set credentials: %s",gnutls_strerror(rc));
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// gnutls_certificate_allocate_credentials(&x509_cred);
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return 0;
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return 1;
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}
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const char * dtls_gnutls_get_cipher(struct conn * conn)
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{
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return "Unknown";
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}
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