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altcp_tls: avoid use of static in altcp_tls_config

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cert and pkey are allocated with the altcp_tls_config structure.

Signed-off-by: goldsimon <goldsimon@gmx.de>
This commit is contained in:
David Girault 2018-01-16 10:35:37 +01:00 committed by goldsimon
parent c7106cc57f
commit 42f14a96fb
1 changed files with 33 additions and 13 deletions
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46
src/apps/altcp_tls/altcp_tls_mbedtls.c
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@ -680,12 +680,17 @@ dummy_rng(void *ctx, unsigned char *buffer, size_t len)
static struct altcp_tls_config *
altcp_tls_create_config(int is_server)
{
size_t sz;
int ret;
struct altcp_tls_config *conf;
altcp_mbedtls_mem_init();
conf = (struct altcp_tls_config *)altcp_mbedtls_alloc_config(sizeof(struct altcp_tls_config));
sz = sizeof(struct altcp_tls_config) + sizeof(mbedtls_x509_crt);
if (is_server)
sz += sizeof(mbedtls_pk_context);
conf = (struct altcp_tls_config *)altcp_mbedtls_alloc_config(sz);
if (conf == NULL) {
return NULL;
}
@ -735,35 +740,41 @@ altcp_tls_create_config_server_privkey_cert(const u8_t *privkey, size_t privkey_
const u8_t *cert, size_t cert_len)
{
int ret;
static mbedtls_x509_crt srvcert;
static mbedtls_pk_context pkey;
mbedtls_x509_crt *srvcert;
mbedtls_pk_context *pkey;
struct altcp_tls_config *conf = altcp_tls_create_config(1);
if (conf == NULL) {
return NULL;
}
mbedtls_x509_crt_init(&srvcert);
mbedtls_pk_init(&pkey);
srvcert = (mbedtls_x509_crt *)(conf+1);
mbedtls_x509_crt_init(srvcert);
pkey = (mbedtls_pk_context *)(srvcert+1);
mbedtls_pk_init(pkey);
/* Load the certificates and private key */
ret = mbedtls_x509_crt_parse(&srvcert, cert, cert_len);
ret = mbedtls_x509_crt_parse(srvcert, cert, cert_len);
if (ret != 0) {
LWIP_DEBUGF(ALTCP_MBEDTLS_DEBUG, ("mbedtls_x509_crt_parse failed: %d\n", ret));
altcp_mbedtls_free_config(conf);
return NULL;
}
ret = mbedtls_pk_parse_key(&pkey, (const unsigned char *) privkey, privkey_len, privkey_pass, privkey_pass_len);
ret = mbedtls_pk_parse_key(pkey, (const unsigned char *) privkey, privkey_len, privkey_pass, privkey_pass_len);
if (ret != 0) {
LWIP_DEBUGF(ALTCP_MBEDTLS_DEBUG, ("mbedtls_pk_parse_public_key failed: %d\n", ret));
mbedtls_x509_crt_free(srvcert);
altcp_mbedtls_free_config(conf);
return NULL;
}
mbedtls_ssl_conf_ca_chain(&conf->conf, srvcert.next, NULL);
ret = mbedtls_ssl_conf_own_cert(&conf->conf, &srvcert, &pkey);
mbedtls_ssl_conf_ca_chain(&conf->conf, srvcert->next, NULL);
ret = mbedtls_ssl_conf_own_cert(&conf->conf, srvcert, pkey);
if (ret != 0) {
LWIP_DEBUGF(ALTCP_MBEDTLS_DEBUG, ("mbedtls_ssl_conf_own_cert failed: %d\n", ret));
mbedtls_x509_crt_free(srvcert);
mbedtls_pk_free(pkey);
altcp_mbedtls_free_config(conf);
return NULL;
}
@ -774,29 +785,38 @@ struct altcp_tls_config *
altcp_tls_create_config_client(const u8_t *cert, size_t cert_len)
{
int ret;
static mbedtls_x509_crt acc_cert;
mbedtls_x509_crt *acc_cert;
struct altcp_tls_config *conf = altcp_tls_create_config(0);
if (conf == NULL) {
return NULL;
}
mbedtls_x509_crt_init(&acc_cert);
/* Initialise certificates, allocated with conf */
acc_cert = (mbedtls_x509_crt *)(conf+1);
mbedtls_x509_crt_init(acc_cert);
/* Load the certificates */
ret = mbedtls_x509_crt_parse(&acc_cert, cert, cert_len);
ret = mbedtls_x509_crt_parse(acc_cert, cert, cert_len);
if (ret != 0) {
LWIP_DEBUGF(ALTCP_MBEDTLS_DEBUG, ("mbedtls_x509_crt_parse failed: %d", ret));
altcp_mbedtls_free_config(conf);
return NULL;
}
mbedtls_ssl_conf_ca_chain(&conf->conf, &acc_cert, NULL);
mbedtls_ssl_conf_ca_chain(&conf->conf, acc_cert, NULL);
return conf;
}
void
altcp_tls_free_config(struct altcp_tls_config *conf)
{
mbedtls_x509_crt *cert = (mbedtls_x509_crt *)(conf+1);
int endpoint = conf->conf.endpoint;
if (endpoint == MBEDTLS_SSL_IS_SERVER) {
mbedtls_pk_context *pkey = (mbedtls_pk_context *)(cert+1);
mbedtls_pk_free(pkey);
}
mbedtls_x509_crt_free(cert);
altcp_mbedtls_free_config(conf);
}