break up the IO functions into their own file

1 files changed, 122 insertions, 0 deletions

diff --git a/include/mod_gnutls.h b/include/mod_gnutls.h
new file mode 100644
index 0000000..70e641f
--- /dev/null
+++ b/include/mod_gnutls.h
@@ -0,0 +1,122 @@
+/* ====================================================================
+ *  Copyright 2004 Paul Querna
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+
+#ifndef __mod_gnutls_h_inc
+#define __mod_gnutls_h_inc
+
+#include "httpd.h"
+#include "http_config.h"
+#include "http_protocol.h"
+#include "http_connection.h"
+#include "http_core.h"
+#include "http_log.h"
+#include "apr_buckets.h"
+#include "apr_strings.h"
+#include "apr_tables.h"
+
+#include <gcrypt.h>
+#include <gnutls/gnutls.h>
+
+module AP_MODULE_DECLARE_DATA gnutls_module;
+
+#define GNUTLS_OUTPUT_FILTER_NAME "gnutls_output_filter"
+#define GNUTLS_INPUT_FILTER_NAME "gnutls_input_filter"
+
+#define GNUTLS_ENABLED_FALSE 0
+#define GNUTLS_ENABLED_TRUE  1
+
+
+typedef struct
+{
+    gnutls_certificate_credentials_t certs;
+    gnutls_anon_server_credentials_t anoncred;
+    char *key_file;
+    char *cert_file;
+    int enabled;
+    int ciphers[16];
+    int key_exchange[16];
+    int macs[16];
+    int protocol[16];
+    int compression[16];
+} gnutls_srvconf_rec;
+
+typedef struct gnutls_handle_t gnutls_handle_t;
+struct gnutls_handle_t
+{
+    gnutls_srvconf_rec *sc;
+    gnutls_session_t session;
+    ap_filter_t *input_filter;
+    apr_bucket_brigade *input_bb;
+    apr_read_type_e input_block;
+    int status;
+    int non_https;
+};
+
+/** Functions in gnutls_io.c **/
+
+/**
+ * mod_gnutls_filter_input will filter the input data
+ * by decrypting it using GnuTLS and passes it cleartext.
+ *
+ * @param f     the filter info record
+ * @param bb    the bucket brigade, where to store the result to
+ * @param mode  what shall we read?
+ * @param block a block index we shall read from?
+ * @return result status
+ */
+apr_status_t mod_gnutls_filter_input(ap_filter_t * f,
+                                 apr_bucket_brigade * bb,
+                                 ap_input_mode_t mode,
+                                 apr_read_type_e block, apr_off_t readbytes);
+
+/**
+ * mod_gnutls_filter_output will filter the encrypt
+ * the incoming bucket using GnuTLS and passes it onto the next filter.
+ *
+ * @param f     the filter info record
+ * @param bb    the bucket brigade, where to store the result to
+ * @return result status
+ */
+apr_status_t mod_gnutls_filter_output(ap_filter_t * f, apr_bucket_brigade * bb);
+
+
+/**
+ * mod_gnutls_transport_read is called from GnuTLS to provide encrypted 
+ * data from the client.
+ *
+ * @param ptr     pointer to the filter context
+ * @param buffer  place to put data
+ * @param len     maximum size
+ * @return size   length of the data stored in buffer
+ */
+ssize_t mod_gnutls_transport_read(gnutls_transport_ptr_t ptr,
+                                     void *buffer, size_t len);
+
+/**
+ * mod_gnutls_transport_write is called from GnuTLS to 
+ * write data to the client.
+ *
+ * @param ptr     pointer to the filter context
+ * @param buffer  buffer to write to the client
+ * @param len     size of the buffer
+ * @return size   length of the data written
+ */
+ssize_t mod_gnutls_transport_write(gnutls_transport_ptr_t ptr,
+                                      const void *buffer, size_t len);
+
+
+#endif /*  __mod_gnutls_h_inc */