Adding upstream version 3.5.24.upstream/3.5.24

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 169 insertions, 0 deletions

diff --git a/src/tlsproxy/tlsproxy_state.c b/src/tlsproxy/tlsproxy_state.c
new file mode 100644
index 0000000..df6cbda
--- /dev/null
+++ b/src/tlsproxy/tlsproxy_state.c
@@ -0,0 +1,169 @@
+/*++
+/* NAME
+/*	tlsproxy_state 3
+/* SUMMARY
+/*	Postfix SMTP server
+/* SYNOPSIS
+/*	#include <tlsproxy.h>
+/*
+/*	TLSP_STATE *tlsp_state_create(service, plaintext_stream)
+/*	const char *service;
+/*	VSTREAM	*plaintext_stream;
+/*
+/*	void	tlsp_state_free(state)
+/*	TLSP_STATE *state;
+/* DESCRIPTION
+/*	This module provides TLSP_STATE constructor and destructor
+/*	routines.
+/*
+/*	tlsp_state_create() initializes session context.
+/*
+/*	tlsp_state_free() destroys session context. If the handshake
+/*	was in progress, it logs a 'handshake failed' message.
+/*
+/*	Arguments:
+/* .IP service
+/*	The service name for the TLS library. This argument is copied.
+/*	The destructor will automatically destroy the string.
+/* .IP plaintext_stream
+/*	The VSTREAM between postscreen(8) and tlsproxy(8).
+/*	The destructor will automatically close the stream.
+/* .PP
+/*	Other structure members are set by the application. The
+/*	text below describes how the TLSP_STATE destructor
+/*	disposes of them.
+/* .IP plaintext_buf
+/*	NBBIO for plaintext I/O.
+/*	The destructor will automatically turn off read/write/timeout
+/*	events and destroy the NBBIO.
+/* .IP ciphertext_fd
+/*	The file handle for the remote SMTP client socket.
+/*	The destructor will automatically turn off read/write events
+/*	and close the file handle.
+/* .IP ciphertext_timer
+/*	The destructor will automatically turn off this time event.
+/* .IP timeout
+/*	Time limit for plaintext and ciphertext I/O.
+/* .IP remote_endpt
+/*	Printable remote endpoint name.
+/*	The destructor will automatically destroy the string.
+/* .IP server_id
+/*	TLS session cache identifier.
+/*	The destructor will automatically destroy the string.
+/* DIAGNOSTICS
+/*	All errors are fatal.
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+ /*
+  * System library.
+  */
+#include <sys_defs.h>
+
+ /*
+  * Utility library.
+  */
+#include <msg.h>
+#include <mymalloc.h>
+#include <nbbio.h>
+
+ /*
+  * Master library.
+  */
+#include <mail_server.h>
+
+ /*
+  * TLS library.
+  */
+#ifdef USE_TLS
+#define TLS_INTERNAL			/* XXX */
+#include <tls.h>
+#include <tls_proxy.h>
+
+ /*
+  * Application-specific.
+  */
+#include <tlsproxy.h>
+
+/* tlsp_state_create - create TLS proxy state object */
+
+TLSP_STATE *tlsp_state_create(const char *service,
+			              VSTREAM *plaintext_stream)
+{
+    TLSP_STATE *state = (TLSP_STATE *) mymalloc(sizeof(*state));
+
+    state->flags = TLSP_FLAG_DO_HANDSHAKE;
+    state->service = mystrdup(service);
+    state->plaintext_stream = plaintext_stream;
+    state->plaintext_buf = 0;
+    state->ciphertext_fd = -1;
+    state->ciphertext_timer = 0;
+    state->timeout = -1;
+    state->remote_endpt = 0;
+    state->server_id = 0;
+    state->tls_context = 0;
+    state->tls_params = 0;
+    state->server_init_props = 0;
+    state->server_start_props = 0;
+    state->client_init_props = 0;
+    state->client_start_props = 0;
+
+    return (state);
+}
+
+/* tlsp_state_free - destroy state objects, connection and events */
+
+void    tlsp_state_free(TLSP_STATE *state)
+{
+    /* Don't log failure after plaintext EOF. */
+    if (state->remote_endpt && state->server_id
+	&& (state->flags & TLSP_FLAG_DO_HANDSHAKE))
+	msg_info("TLS handshake failed for service=%s peer=%s",
+		 state->server_id, state->remote_endpt);
+    myfree(state->service);
+    if (state->plaintext_buf)			/* turns off plaintext events */
+	nbbio_free(state->plaintext_buf);
+    else
+	event_disable_readwrite(vstream_fileno(state->plaintext_stream));
+    event_server_disconnect(state->plaintext_stream);
+    if (state->ciphertext_fd >= 0) {
+	event_disable_readwrite(state->ciphertext_fd);
+	(void) close(state->ciphertext_fd);
+    }
+    if (state->ciphertext_timer)
+	event_cancel_timer(state->ciphertext_timer, (void *) state);
+    if (state->remote_endpt) {
+	msg_info("DISCONNECT %s", state->remote_endpt);
+	myfree(state->remote_endpt);
+    }
+    if (state->server_id)
+	myfree(state->server_id);
+    if (state->tls_context)
+	tls_free_context(state->tls_context);
+    if (state->tls_params)
+	tls_proxy_client_param_free(state->tls_params);
+    if (state->server_init_props)
+	tls_proxy_server_init_free(state->server_init_props);
+    if (state->server_start_props)
+	tls_proxy_server_start_free(state->server_start_props);
+    if (state->client_init_props)
+	tls_proxy_client_init_free(state->client_init_props);
+    if (state->client_start_props)
+	tls_proxy_client_start_free(state->client_start_props);
+    myfree((void *) state);
+}
+
+#endif