free_certificate_chain(): Fix memset() target

[privoxy.git] / ssl.c

diff --git a/ssl.c b/ssl.c
index eb85ff2..a7f92eb 100644 (file)
--- a/ssl.c
+++ b/ssl.c
@@ -42,11 +42,11 @@
 #include "mbedtls/base64.h"
 #include "mbedtls/error.h"
 
+#include "config.h"
 #include "project.h"
 #include "miscutil.h"
 #include "errlog.h"
 #include "jcc.h"
-#include "config.h"
 #include "ssl.h"
 
 
@@ -107,7 +107,7 @@ typedef struct {
    char *key_file_path;      /* filename of the key file */
 } key_options;
 
-extern int generate_webpage_certificate(struct client_state *csp);
+static int generate_webpage_certificate(struct client_state *csp);
 static char *make_certs_path(const char *conf_dir, const char *file_name, const char *suffix);
 static int file_exists(const char *path);
 static int host_to_hash(struct client_state *csp);
@@ -241,7 +241,6 @@ extern int ssl_send_data(mbedtls_ssl_context *ssl, const unsigned char *buf, siz
          {
             char err_buf[ERROR_BUF_SIZE];
 
-            memset(err_buf, 0, sizeof(err_buf));
             mbedtls_strerror(ret, err_buf, sizeof(err_buf));
             log_error(LOG_LEVEL_ERROR,
                "Sending data over TLS/SSL failed: %s", err_buf);
@@ -290,7 +289,6 @@ extern int ssl_recv_data(mbedtls_ssl_context *ssl, unsigned char *buf, size_t ma
    {
       char err_buf[ERROR_BUF_SIZE];
 
-      memset(err_buf, 0, sizeof(err_buf));
       mbedtls_strerror(ret, err_buf, sizeof(err_buf));
       log_error(LOG_LEVEL_ERROR,
          "Receiving data over TLS/SSL failed: %s", err_buf);
@@ -385,8 +383,6 @@ extern int create_client_ssl_connection(struct client_state *csp)
    int ret = 0;
    char err_buf[ERROR_BUF_SIZE];
 
-   memset(err_buf, 0, sizeof(err_buf));
-
    /*
     * Initializing mbedtls structures for TLS/SSL connection
     */
@@ -679,8 +675,6 @@ extern int create_server_ssl_connection(struct client_state *csp)
    char *trusted_cas_file = NULL;
    int auth_mode = MBEDTLS_SSL_VERIFY_REQUIRED;
 
-   memset(err_buf, 0, sizeof(err_buf));
-
    csp->server_cert_verification_result = SSL_CERT_NOT_VERIFIED;
    csp->server_certs_chain.next = NULL;
 
@@ -693,7 +687,7 @@ extern int create_server_ssl_connection(struct client_state *csp)
    mbedtls_net_init(&(csp->mbedtls_server_attr.socket_fd));
    mbedtls_ssl_init(&(csp->mbedtls_server_attr.ssl));
    mbedtls_ssl_config_init(&(csp->mbedtls_server_attr.conf));
-   mbedtls_x509_crt_init( &(csp->mbedtls_server_attr.ca_cert));
+   mbedtls_x509_crt_init(&(csp->mbedtls_server_attr.ca_cert));
 
    /*
    * Setting socket fd in mbedtls_net_context structure. This structure
@@ -961,7 +955,6 @@ static int write_certificate(mbedtls_x509write_cert *crt, const char *output_fil
    int ret = 0;
    char err_buf[ERROR_BUF_SIZE];
 
-   memset(err_buf,  0, sizeof(err_buf));
    memset(cert_buf, 0, sizeof(cert_buf));
 
    /*
@@ -1029,8 +1022,6 @@ static int write_private_key(mbedtls_pk_context *key, unsigned char **ret_buf,
    int ret = 0;
    char err_buf[ERROR_BUF_SIZE];
 
-   memset(err_buf, 0, sizeof(err_buf));
-
    /* Initializing buffer for key file content */
    *ret_buf = zalloc_or_die(PRIVATE_KEY_BUF_SIZE + 1);
 
@@ -1110,7 +1101,6 @@ static int generate_key(unsigned char **key_buf, struct client_state *csp)
    char err_buf[ERROR_BUF_SIZE];
 
    key_opt.key_file_path = NULL;
-   memset(err_buf, 0, sizeof(err_buf));
 
    /*
     * Initializing structures for key generating
@@ -1209,11 +1199,11 @@ exit:
  *          1  :  csp = Current client state (buffers, headers, etc...)
  *
  * Returns     :  -1 => Error while creating certificate.
- *                 0 => Certificate alreaday exist.
+ *                 0 => Certificate already exists.
  *                >0 => Length of created certificate.
  *
  *********************************************************************/
-extern int generate_webpage_certificate(struct client_state *csp)
+static int generate_webpage_certificate(struct client_state *csp)
 {
    mbedtls_x509_crt issuer_cert;
    mbedtls_pk_context loaded_issuer_key, loaded_subject_key;
@@ -1228,8 +1218,6 @@ extern int generate_webpage_certificate(struct client_state *csp)
    char err_buf[ERROR_BUF_SIZE];
    cert_options cert_opt;
 
-   memset(err_buf, 0, sizeof(err_buf));
-
    /* Paths to keys and certificates needed to create certificate */
    cert_opt.issuer_key  = NULL;
    cert_opt.subject_key = NULL;
@@ -1250,7 +1238,7 @@ extern int generate_webpage_certificate(struct client_state *csp)
     * Initializing structures for certificate generating
     */
    mbedtls_x509write_crt_init(&cert);
-   mbedtls_x509write_crt_set_md_alg( &cert, CERT_SIGNATURE_ALGORITHM);
+   mbedtls_x509write_crt_set_md_alg(&cert, CERT_SIGNATURE_ALGORITHM);
    mbedtls_pk_init(&loaded_issuer_key);
    mbedtls_pk_init(&loaded_subject_key);
    mbedtls_mpi_init(&serial);
@@ -1419,8 +1407,8 @@ extern int generate_webpage_certificate(struct client_state *csp)
    if (!mbedtls_pk_can_do(&issuer_cert.pk, MBEDTLS_PK_RSA) ||
       mbedtls_mpi_cmp_mpi(&mbedtls_pk_rsa(issuer_cert.pk)->N,
          &mbedtls_pk_rsa(*issuer_key)->N) != 0 ||
-      mbedtls_mpi_cmp_mpi( &mbedtls_pk_rsa(issuer_cert.pk)->E,
-         &mbedtls_pk_rsa(*issuer_key )->E) != 0)
+      mbedtls_mpi_cmp_mpi(&mbedtls_pk_rsa(issuer_cert.pk)->E,
+         &mbedtls_pk_rsa(*issuer_key)->E) != 0)
    {
       log_error(LOG_LEVEL_ERROR,
          "Issuer key doesn't match issuer certificate");
@@ -1876,7 +1864,7 @@ static void free_certificate_chain(struct client_state *csp)
    /* Cleaning buffers */
    memset(csp->server_certs_chain.text_buf, 0,
       sizeof(csp->server_certs_chain.text_buf));
-   memset(csp->server_certs_chain.text_buf, 0,
+   memset(csp->server_certs_chain.file_buf, 0,
       sizeof(csp->server_certs_chain.file_buf));
    csp->server_certs_chain.next = NULL;
 
@@ -2042,8 +2030,6 @@ static int seed_rng(struct client_state *csp)
    int ret = 0;
    char err_buf[ERROR_BUF_SIZE];
 
-   memset(err_buf, 0, sizeof(err_buf));
-
    if (rng_seeded == 0)
    {
       privoxy_mutex_lock(&rng_mutex);