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esp-tls: Add support to add CN from config and validate PEM buffers

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This commit is contained in:
Jitin George 2019-05-03 19:32:54 +05:30 committed by bot
parent 53e295a616
commit 25f837a148
2 changed files with 28 additions and 12 deletions
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14
components/esp-tls/esp_tls.c
View File

@ -242,18 +242,26 @@ static int create_ssl_handle(esp_tls_t *tls, const char *hostname, size_t hostle
goto exit;
}
/* Hostname set here should match CN in server certificate */
char *use_host = strndup(hostname, hostlen);
if (!use_host) {
if (!cfg->skip_common_name) {
char *use_host = NULL;
if (cfg->common_name != NULL) {
use_host = strndup(cfg->common_name, strlen(cfg->common_name));
} else {
use_host = strndup(hostname, hostlen);
}
if (use_host == NULL) {
goto exit;
}
/* Hostname set here should match CN in server certificate */
if ((ret = mbedtls_ssl_set_hostname(&tls->ssl, use_host)) != 0) {
ESP_LOGE(TAG, "mbedtls_ssl_set_hostname returned -0x%x", -ret);
free(use_host);
goto exit;
}
free(use_host);
}
if ((ret = mbedtls_ssl_config_defaults(&tls->conf,
MBEDTLS_SSL_IS_CLIENT,

14
components/esp-tls/esp_tls.h
View File

@ -57,17 +57,20 @@ typedef struct esp_tls_cfg {
- where the first '2' is the length of the protocol and
- the subsequent 'h2' is the protocol name */
const unsigned char *cacert_pem_buf; /*!< Certificate Authority's certificate in a buffer */
const unsigned char *cacert_pem_buf; /*!< Certificate Authority's certificate in a buffer.
This buffer should be NULL terminated */
unsigned int cacert_pem_bytes; /*!< Size of Certificate Authority certificate
pointed to by cacert_pem_buf */
const unsigned char *clientcert_pem_buf;/*!< Client certificate in a buffer */
const unsigned char *clientcert_pem_buf;/*!< Client certificate in a buffer
This buffer should be NULL terminated */
unsigned int clientcert_pem_bytes; /*!< Size of client certificate pointed to by
clientcert_pem_buf */
const unsigned char *clientkey_pem_buf; /*!< Client key in a buffer */
const unsigned char *clientkey_pem_buf; /*!< Client key in a buffer
This buffer should be NULL terminated */
unsigned int clientkey_pem_bytes; /*!< Size of client key pointed to by
clientkey_pem_buf */
@ -85,6 +88,11 @@ typedef struct esp_tls_cfg {
bool use_global_ca_store; /*!< Use a global ca_store for all the connections in which
this bool is set. */
const char *common_name; /*!< If non-NULL, server certificate CN must match this name.
If NULL, server certificate CN must match hostname. */
bool skip_common_name; /*!< Skip any validation of server certificate CN field */
} esp_tls_cfg_t;
/**