commit 1a23dd25c36bdb0e0be264730e9088a49a1e8152
parent 111e08fbe3f436bd21f78ab8c6c4c3b79e728bba
Author: Christian Grothoff <christian@grothoff.org>
Date: Thu, 5 Oct 2017 23:16:19 +0200
misc style improvements, fixing some tiny rare memory leaks in examples
Diffstat:
15 files changed, 208 insertions(+), 106 deletions(-)
diff --git a/doc/examples/largepost.c b/doc/examples/largepost.c
@@ -151,7 +151,9 @@ iterate_post (void *coninfo_cls,
con_info->answercode = MHD_HTTP_FORBIDDEN;
return MHD_YES;
}
-
+ /* NOTE: This is technically a race with the 'fopen()' above,
+ but there is no easy fix, short of moving to open(O_EXCL)
+ instead of using fopen(). For the example, we do not care. */
con_info->fp = fopen (filename, "ab");
if (!con_info->fp)
{
diff --git a/src/examples/chunked_example.c b/src/examples/chunked_example.c
@@ -32,6 +32,7 @@ struct ResponseContentCallbackParam
size_t response_size;
};
+
static ssize_t
callback (void *cls,
uint64_t pos,
@@ -77,12 +78,14 @@ callback (void *cls,
return size_to_copy;
}
-void
-free_callback_param(void *cls)
+
+static void
+free_callback_param (void *cls)
{
free(cls);
}
+
static const char simple_response_text[] = "<html><head><title>Simple response</title></head>"
"<body>Simple response text</body></html>";
@@ -93,10 +96,12 @@ ahc_echo (void *cls,
const char *url,
const char *method,
const char *version,
- const char *upload_data, size_t *upload_data_size, void **ptr)
+ const char *upload_data,
+ size_t *upload_data_size,
+ void **ptr)
{
static int aptr;
- struct ResponseContentCallbackParam * callback_param;
+ struct ResponseContentCallbackParam *callback_param;
struct MHD_Response *response;
int ret;
(void)cls; /* Unused. Silent compiler warning. */
@@ -127,31 +132,47 @@ ahc_echo (void *cls,
&callback,
callback_param,
&free_callback_param);
+ if (NULL == response)
+ {
+ free (callback_param);
+ return MHD_NO;
+ }
ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
MHD_destroy_response (response);
return ret;
}
+
int
main (int argc, char *const *argv)
{
struct MHD_Daemon *d;
+ int port;
if (argc != 2)
{
printf ("%s PORT\n", argv[0]);
return 1;
}
+ port = atoi (argv[1]);
+ if ( (1 > port) ||
+ (port > UINT16_MAX) )
+ {
+ fprintf (stderr,
+ "Port must be a number between 1 and 65535\n");
+ return 1;
+ }
d = MHD_start_daemon (// MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG,
MHD_USE_AUTO | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG,
// MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG | MHD_USE_POLL,
// MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG | MHD_USE_POLL,
// MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG,
- atoi (argv[1]),
- NULL, NULL, &ahc_echo, NULL,
+ (uint16_t) port,
+ NULL, NULL,
+ &ahc_echo, NULL,
MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 120,
MHD_OPTION_END);
- if (d == NULL)
+ if (NULL == d)
return 1;
(void) getc (stdin);
MHD_stop_daemon (d);
diff --git a/src/examples/demo.c b/src/examples/demo.c
@@ -254,7 +254,7 @@ struct ResponseDataContext
*
* @param rdc where to store the list of files
* @param dirname name of the directory to list
- * @return MHD_YES on success, MHD_NO on error
+ * @return #MHD_YES on success, #MHD_NO on error
*/
static int
list_directory (struct ResponseDataContext *rdc,
@@ -271,7 +271,7 @@ list_directory (struct ResponseDataContext *rdc,
{
if ('.' == de->d_name[0])
continue;
- if (sizeof (fullname) <= (size_t)
+ if (sizeof (fullname) <= (unsigned int)
snprintf (fullname, sizeof (fullname),
"%s/%s",
dirname, de->d_name))
@@ -555,7 +555,7 @@ process_upload_data (void *cls,
uc->category,
filename);
for (i=strlen (fn)-1;i>=0;i--)
- if (! isprint ((int) fn[i]))
+ if (! isprint ((unsigned char) fn[i]))
fn[i] = '_';
uc->fd = open (fn,
O_CREAT | O_EXCL
diff --git a/src/examples/https_fileserver_example.c b/src/examples/https_fileserver_example.c
@@ -191,38 +191,44 @@ int
main (int argc, char *const *argv)
{
struct MHD_Daemon *TLS_daemon;
+ int port;
- if (argc == 2)
+ if (argc != 2)
{
- /* TODO check if this is truly necessary - disallow usage of the blocking /dev/random */
- /* gcry_control(GCRYCTL_ENABLE_QUICK_RANDOM, 0); */
- TLS_daemon =
- MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG |
- MHD_USE_TLS, atoi (argv[1]), NULL, NULL, &http_ahc,
- NULL, MHD_OPTION_CONNECTION_TIMEOUT, 256,
- MHD_OPTION_HTTPS_MEM_KEY, key_pem,
- MHD_OPTION_HTTPS_MEM_CERT, cert_pem,
- MHD_OPTION_END);
+ printf ("%s PORT\n", argv[0]);
+ return 1;
}
- else
+ port = atoi (argv[1]);
+ if ( (1 > port) ||
+ (port > UINT16_MAX) )
{
- printf ("Usage: %s HTTP-PORT\n", argv[0]);
+ fprintf (stderr,
+ "Port must be a number between 1 and 65535\n");
return 1;
}
- if (TLS_daemon == NULL)
+ /* TODO check if this is truly necessary - disallow usage of the blocking /dev/random */
+ /* gcry_control(GCRYCTL_ENABLE_QUICK_RANDOM, 0); */
+ TLS_daemon =
+ MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG |
+ MHD_USE_TLS,
+ (uint16_t) port,
+ NULL, NULL,
+ &http_ahc, NULL,
+ MHD_OPTION_CONNECTION_TIMEOUT, 256,
+ MHD_OPTION_HTTPS_MEM_KEY, key_pem,
+ MHD_OPTION_HTTPS_MEM_CERT, cert_pem,
+ MHD_OPTION_END);
+ if (NULL == TLS_daemon)
{
fprintf (stderr, "Error: failed to start TLS_daemon\n");
return 1;
}
- else
- {
- printf ("MHD daemon listening on port %d\n", atoi (argv[1]));
- }
+ printf ("MHD daemon listening on port %u\n",
+ (unsigned int) port);
(void) getc (stdin);
MHD_stop_daemon (TLS_daemon);
-
return 0;
}
diff --git a/src/examples/post_example.c b/src/examples/post_example.c
@@ -313,23 +313,28 @@ fill_v1_form (const void *cls,
struct MHD_Connection *connection)
{
int ret;
+ size_t slen;
char *reply;
struct MHD_Response *response;
(void)cls; /* Unused. Silent compiler warning. */
- reply = malloc (strlen (MAIN_PAGE) + strlen (session->value_1) + 1);
+ slen = strlen (MAIN_PAGE) + strlen (session->value_1);
+ reply = malloc (slen + 1);
if (NULL == reply)
return MHD_NO;
snprintf (reply,
- strlen (MAIN_PAGE) + strlen (session->value_1) + 1,
+ slen + 1,
MAIN_PAGE,
session->value_1);
/* return static form */
- response = MHD_create_response_from_buffer (strlen (reply),
+ response = MHD_create_response_from_buffer (slen,
(void *) reply,
MHD_RESPMEM_MUST_FREE);
if (NULL == response)
+ {
+ free (reply);
return MHD_NO;
+ }
add_session_cookie (session, response);
MHD_add_response_header (response,
MHD_HTTP_HEADER_CONTENT_ENCODING,
@@ -359,22 +364,27 @@ fill_v1_v2_form (const void *cls,
int ret;
char *reply;
struct MHD_Response *response;
+ size_t slen;
(void)cls; /* Unused. Silent compiler warning. */
- reply = malloc (strlen (SECOND_PAGE) + strlen (session->value_1) + strlen (session->value_2) + 1);
+ slen = strlen (SECOND_PAGE) + strlen (session->value_1) + strlen (session->value_2);
+ reply = malloc (slen + 1);
if (NULL == reply)
return MHD_NO;
snprintf (reply,
- strlen (SECOND_PAGE) + strlen (session->value_1) + strlen (session->value_2) + 1,
+ slen + 1,
SECOND_PAGE,
session->value_1,
session->value_2);
/* return static form */
- response = MHD_create_response_from_buffer (strlen (reply),
+ response = MHD_create_response_from_buffer (slen,
(void *) reply,
MHD_RESPMEM_MUST_FREE);
if (NULL == response)
+ {
+ free (reply);
return MHD_NO;
+ }
add_session_cookie (session, response);
MHD_add_response_header (response,
MHD_HTTP_HEADER_CONTENT_ENCODING,
diff --git a/src/microhttpd/connection.c b/src/microhttpd/connection.c
@@ -1070,7 +1070,7 @@ try_ready_normal_body (struct MHD_Connection *connection)
* Prepare the response buffer of this connection for sending.
* Assumes that the response mutex is already held. If the
* transmission is complete, this function may close the socket (and
- * return MHD_NO).
+ * return #MHD_NO).
*
* @param connection the connection
* @return #MHD_NO if readying the response failed
@@ -1086,6 +1086,8 @@ try_ready_chunked_body (struct MHD_Connection *connection)
int cblen;
response = connection->response;
+ if (NULL == response->crc)
+ return MHD_YES;
if (0 == connection->write_buffer_size)
{
size = MHD_MIN (connection->daemon->pool_size,
@@ -3533,8 +3535,7 @@ MHD_connection_handle_idle (struct MHD_Connection *connection)
socket_start_no_buffering (connection);
continue;
}
- if (NULL != connection->response->crc)
- MHD_mutex_unlock_chk_ (&connection->response->mutex);
+ MHD_mutex_unlock_chk_ (&connection->response->mutex);
break;
case MHD_CONNECTION_BODY_SENT:
if (MHD_NO == build_header_response (connection))
diff --git a/src/microhttpd/response.c b/src/microhttpd/response.c
@@ -316,10 +316,10 @@ MHD_create_response_from_callback (uint64_t size,
response->data = (void *) &response[1];
response->data_buffer_size = block_size;
if (! MHD_mutex_init_ (&response->mutex))
- {
- free (response);
- return NULL;
- }
+ {
+ free (response);
+ return NULL;
+ }
response->crc = crc;
response->crfc = crfc;
response->crc_cls = crc_cls;
diff --git a/src/microhttpd/test_shutdown_select.c b/src/microhttpd/test_shutdown_select.c
@@ -112,10 +112,11 @@ has_in_name(const char *prog_name, const char *marker)
pos++;
}
if (name_pos == pos)
- return !0;
+ return true;
return strstr(prog_name + name_pos, marker) != NULL;
}
+
static MHD_socket
start_socket_listen(int domain)
{
@@ -290,7 +291,7 @@ main (int argc, char *const *argv)
test_poll = has_in_name(argv[0], "_poll");
must_ignore = has_in_name(argv[0], "_ignore");
- if (!test_poll)
+ if (! test_poll)
test_func = &select_thread;
else
{
@@ -324,7 +325,7 @@ main (int argc, char *const *argv)
if (MHD_INVALID_SOCKET == listen_socket)
return 99;
- check_err = !0;
+ check_err = true;
/* fprintf (stdout, "Starting select() thread...\n"); */
#if defined(MHD_USE_POSIX_THREADS)
if (0 != pthread_create (&sel_thrd, NULL, test_func, &listen_socket))
diff --git a/src/testcurl/https/test_https_session_info.c b/src/testcurl/https/test_https_session_info.c
@@ -141,7 +141,9 @@ test_query_session ()
aes256_sha = "rsa_aes_256_sha";
}
- gen_test_file_url (url, port);
+ gen_test_file_url (url,
+ sizeof (url),
+ port);
c = curl_easy_init ();
#if DEBUG_HTTPS_TEST
curl_easy_setopt (c, CURLOPT_VERBOSE, 1);
diff --git a/src/testcurl/https/test_tls_extensions.c b/src/testcurl/https/test_tls_extensions.c
@@ -168,7 +168,9 @@ test_hello_extension (gnutls_session_t session, int port, extensions_t exten_t,
gnutls_transport_set_ptr (session, (MHD_gnutls_transport_ptr_t) (long) sd);
- if (gen_test_file_url (url, port))
+ if (gen_test_file_url (url,
+ sizeof (url),
+ port))
{
ret = -1;
goto cleanup;
diff --git a/src/testcurl/https/test_tls_options.c b/src/testcurl/https/test_tls_options.c
@@ -57,10 +57,13 @@ test_unmatching_ssl_version (void * cls, int port, const char *cipher_suite,
cbc.pos = 0;
char url[255];
- if (gen_test_file_url (url, port))
+ if (gen_test_file_url (url,
+ sizeof (url),
+ port))
{
free (cbc.buf);
- fprintf (stderr, "Internal error in gen_test_file_url\n");
+ fprintf (stderr,
+ "Internal error in gen_test_file_url\n");
return -1;
}
diff --git a/src/testcurl/https/tls_test_common.c b/src/testcurl/https/tls_test_common.c
@@ -84,7 +84,9 @@ test_daemon_get (void *cls,
cbc.pos = 0;
/* construct url - this might use doc_path */
- gen_test_file_url (url, port);
+ gen_test_file_url (url,
+ sizeof (url),
+ port);
c = curl_easy_init ();
#if DEBUG_HTTPS_TEST
@@ -108,7 +110,7 @@ test_daemon_get (void *cls,
curl_easy_setopt (c, CURLOPT_CAINFO, ca_cert_file_name);
curl_easy_setopt (c, CURLOPT_SSL_VERIFYHOST, 0);
curl_easy_setopt (c, CURLOPT_FAILONERROR, 1);
-
+
/* NOTE: use of CONNECTTIMEOUT without also
setting NOSIGNAL results in really weird
crashes on my system! */
@@ -258,12 +260,15 @@ send_curl_req (char *url, struct CBC * cbc, const char *cipher_suite,
/**
* compile test file url pointing to the current running directory path
*
- * @param url - char buffer into which the url is compiled
+ * @param[out] url - char buffer into which the url is compiled
+ * @param url_len number of bytes available in url
* @param port port to use for the test
* @return -1 on error
*/
int
-gen_test_file_url (char *url, int port)
+gen_test_file_url (char *url,
+ size_t url_len,
+ int port)
{
int ret = 0;
char *doc_path;
@@ -279,46 +284,54 @@ gen_test_file_url (char *url, int port)
fprintf (stderr, MHD_E_MEM);
return -1;
}
- if (getcwd (doc_path, doc_path_len) == NULL)
+ if (NULL == getcwd (doc_path, doc_path_len))
{
- fprintf (stderr, "Error: failed to get working directory. %s\n",
+ fprintf (stderr,
+ "Error: failed to get working directory. %s\n",
strerror (errno));
- ret = -1;
+ free (doc_path);
+ return -1;
}
#ifdef WINDOWS
+ for (int i = 0; i < doc_path_len; i++)
{
- int i;
- for (i = 0; i < doc_path_len; i++)
- {
- if (doc_path[i] == 0)
- break;
- if (doc_path[i] == '\\')
+ if (doc_path[i] == 0)
+ break;
+ if (doc_path[i] == '\\')
{
doc_path[i] = '/';
}
- if (doc_path[i] != ':')
- continue;
- if (i == 0)
- break;
- doc_path[i] = doc_path[i - 1];
- doc_path[i - 1] = '/';
- }
+ if (doc_path[i] != ':')
+ continue;
+ if (i == 0)
+ break;
+ doc_path[i] = doc_path[i - 1];
+ doc_path[i - 1] = '/';
}
#endif
- /* construct url - this might use doc_path */
- if (sprintf (url, "%s:%d%s/%s", "https://127.0.0.1", port,
- doc_path, "urlpath") < 0)
+ /* construct url */
+ if (snprintf (url,
+ url_len,
+ "%s:%d%s/%s",
+ "https://127.0.0.1",
+ port,
+ doc_path,
+ "urlpath") >= url_len)
ret = -1;
free (doc_path);
return ret;
}
+
/**
* test HTTPS file transfer
*/
int
-test_https_transfer (void *cls, int port, const char *cipher_suite, int proto_version)
+test_https_transfer (void *cls,
+ int port,
+ const char *cipher_suite,
+ int proto_version)
{
int len;
int ret = 0;
@@ -334,13 +347,16 @@ test_https_transfer (void *cls, int port, const char *cipher_suite, int proto_ve
cbc.size = len;
cbc.pos = 0;
- if (gen_test_file_url (url, port))
+ if (gen_test_file_url (url,
+ sizeof (url),
+ port))
{
ret = -1;
goto cleanup;
}
- if (CURLE_OK != send_curl_req (url, &cbc, cipher_suite, proto_version))
+ if (CURLE_OK !=
+ send_curl_req (url, &cbc, cipher_suite, proto_version))
{
ret = -1;
goto cleanup;
@@ -348,8 +364,8 @@ test_https_transfer (void *cls, int port, const char *cipher_suite, int proto_ve
/* compare test file & daemon responce */
if ( (len != strlen (test_data)) ||
- (memcmp (cbc.buf,
- test_data,
+ (memcmp (cbc.buf,
+ test_data,
len) != 0) )
{
fprintf (stderr, "Error: local file & received file differ.\n");
@@ -404,7 +420,7 @@ teardown_testcase (struct MHD_Daemon *d)
int
setup_session (gnutls_session_t * session,
gnutls_datum_t * key,
- gnutls_datum_t * cert,
+ gnutls_datum_t * cert,
gnutls_certificate_credentials_t * xcred)
{
int ret;
@@ -413,7 +429,7 @@ setup_session (gnutls_session_t * session,
gnutls_certificate_allocate_credentials (xcred);
key->size = strlen (srv_key_pem) + 1;
key->data = malloc (key->size);
- if (NULL == key->data)
+ if (NULL == key->data)
{
gnutls_certificate_free_credentials (*xcred);
return -1;
@@ -424,7 +440,7 @@ setup_session (gnutls_session_t * session,
if (NULL == cert->data)
{
gnutls_certificate_free_credentials (*xcred);
- free (key->data);
+ free (key->data);
return -1;
}
memcpy (cert->data, srv_self_signed_cert_pem, cert->size);
@@ -440,8 +456,8 @@ setup_session (gnutls_session_t * session,
free (key->data);
return -1;
}
- gnutls_credentials_set (*session,
- GNUTLS_CRD_CERTIFICATE,
+ gnutls_credentials_set (*session,
+ GNUTLS_CRD_CERTIFICATE,
*xcred);
return 0;
}
diff --git a/src/testcurl/https/tls_test_common.h b/src/testcurl/https/tls_test_common.h
@@ -68,12 +68,15 @@ struct CipherDef
};
-int curl_check_version (const char *req_version, ...);
-int curl_uses_nss_ssl ();
+int
+curl_check_version (const char *req_version, ...);
+
+int
+curl_uses_nss_ssl (void);
FILE *
-setup_ca_cert ();
+setup_ca_cert (void);
/**
* perform cURL request for file
@@ -83,9 +86,11 @@ test_daemon_get (void * cls,
const char *cipher_suite, int proto_version,
int port, int ver_peer);
-void print_test_result (int test_outcome, char *test_name);
+void
+print_test_result (int test_outcome, char *test_name);
-size_t copyBuffer (void *ptr, size_t size, size_t nmemb, void *ctx);
+size_t
+copyBuffer (void *ptr, size_t size, size_t nmemb, void *ctx);
int
http_ahc (void *cls, struct MHD_Connection *connection,
@@ -102,11 +107,15 @@ http_dummy_ahc (void *cls, struct MHD_Connection *connection,
/**
* compile test file url pointing to the current running directory path
*
- * @param url - char buffer into which the url is compiled
+ * @param[out] url - char buffer into which the url is compiled
+ * @param url_len number of bytes available in @a url
* @param port port to use for the test
* @return -1 on error
*/
-int gen_test_file_url (char *url, int port);
+int
+gen_test_file_url (char *url,
+ size_t url_len,
+ int port);
int
send_curl_req (char *url, struct CBC *cbc, const char *cipher_suite,
@@ -118,7 +127,9 @@ test_https_transfer (void *cls, int port, const char *cipher_suite, int proto_ve
int
setup_testcase (struct MHD_Daemon **d, int port, int daemon_flags, va_list arg_list);
-void teardown_testcase (struct MHD_Daemon *d);
+void
+teardown_testcase (struct MHD_Daemon *d);
+
int
setup_session (gnutls_session_t * session,
diff --git a/src/testcurl/test_callback.c b/src/testcurl/test_callback.c
@@ -69,15 +69,21 @@ callback(void *cls,
{
struct callback_closure *cbc = calloc(1, sizeof(struct callback_closure));
struct MHD_Response *r;
+ int ret;
r = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN, 1024,
&called_twice, cbc,
&free);
- MHD_queue_response (connection,
- MHD_HTTP_OK,
- r);
+ if (NULL == r)
+ {
+ free (cbc);
+ return MHD_NO;
+ }
+ ret = MHD_queue_response (connection,
+ MHD_HTTP_OK,
+ r);
MHD_destroy_response (r);
- return MHD_YES;
+ return ret;
}
diff --git a/src/testcurl/test_get_chunked.c b/src/testcurl/test_get_chunked.c
@@ -54,8 +54,12 @@ struct CBC
size_t size;
};
+
static size_t
-copyBuffer (void *ptr, size_t size, size_t nmemb, void *ctx)
+copyBuffer (void *ptr,
+ size_t size,
+ size_t nmemb,
+ void *ctx)
{
struct CBC *cbc = ctx;
@@ -66,28 +70,34 @@ copyBuffer (void *ptr, size_t size, size_t nmemb, void *ctx)
return size * nmemb;
}
+
/**
- * MHD content reader callback that returns
- * data in chunks.
+ * MHD content reader callback that returns data in chunks.
*/
static ssize_t
-crc (void *cls, uint64_t pos, char *buf, size_t max)
+crc (void *cls,
+ uint64_t pos,
+ char *buf,
+ size_t max)
{
struct MHD_Response **responseptr = cls;
if (pos == 128 * 10)
- {
- MHD_add_response_header (*responseptr, "Footer", "working");
- return MHD_CONTENT_READER_END_OF_STREAM;
- }
+ {
+ MHD_add_response_footer (*responseptr,
+ "Footer",
+ "working");
+ return MHD_CONTENT_READER_END_OF_STREAM;
+ }
if (max < 128)
abort (); /* should not happen in this testcase... */
memset (buf, 'A' + (pos / 128), 128);
return 128;
}
+
/**
- * Dummy function that does nothing.
+ * Dummy function that frees the "responseptr".
*/
static void
crcf (void *ptr)
@@ -95,6 +105,7 @@ crcf (void *ptr)
free (ptr);
}
+
static int
ahc_echo (void *cls,
struct MHD_Connection *connection,
@@ -118,17 +129,27 @@ ahc_echo (void *cls,
return MHD_YES;
}
responseptr = malloc (sizeof (struct MHD_Response *));
- if (responseptr == NULL)
+ if (NULL == responseptr)
return MHD_NO;
response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
1024,
- &crc, responseptr, &crcf);
+ &crc,
+ responseptr,
+ &crcf);
+ if (NULL == response)
+ {
+ free (responseptr);
+ return MHD_NO;
+ }
*responseptr = response;
- ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
+ ret = MHD_queue_response (connection,
+ MHD_HTTP_OK,
+ response);
MHD_destroy_response (response);
return ret;
}
+
static int
validate (struct CBC cbc, int ebase)
{
