Diff: EMAC/uIP/apps/smtp/smtp.c

Revision:

0:bf7b9fba3924

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/EMAC/uIP/apps/smtp/smtp.c	Sun Mar 20 05:38:56 2011 +0000
@@ -0,0 +1,266 @@
+/** @addtogroup EMAC_uIP
+ * @{
+ */
+/**
+ * \addtogroup apps
+ * @{
+ */
+
+/**
+ * \defgroup smtp SMTP E-mail sender
+ * @{
+ *
+ * The Simple Mail Transfer Protocol (SMTP) as defined by RFC821 is
+ * the standard way of sending and transfering e-mail on the
+ * Internet. This simple example implementation is intended as an
+ * example of how to implement protocols in uIP, and is able to send
+ * out e-mail but has not been extensively tested.
+ */
+
+/**
+ * \file
+ * SMTP example implementation
+ * \author Adam Dunkels <adam@dunkels.com>
+ */
+
+/*
+ * Copyright (c) 2004, Adam Dunkels.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the uIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ * $Id: smtp.c,v 1.4 2006/06/11 21:46:37 adam Exp $
+ */
+#include "smtp.h"
+
+#include "smtp-strings.h"
+#include "psock.h"
+#include "uip.h"
+
+#include <string.h>
+
+static struct smtp_state s;
+
+static char *localhostname;
+static uip_ipaddr_t smtpserver;
+
+#define ISO_nl 0x0a
+#define ISO_cr 0x0d
+
+#define ISO_period 0x2e
+
+#define ISO_2  0x32
+#define ISO_3  0x33
+#define ISO_4  0x34
+#define ISO_5  0x35
+
+
+/*---------------------------------------------------------------------------*/
+static
+PT_THREAD(smtp_thread(void))
+{
+  PSOCK_BEGIN(&s.psock);
+
+  PSOCK_READTO(&s.psock, ISO_nl);
+
+  if(strncmp(s.inputbuffer, smtp_220, 3) != 0) {
+    PSOCK_CLOSE(&s.psock);
+    smtp_done(2);
+    PSOCK_EXIT(&s.psock);
+  }
+
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_helo);
+  PSOCK_SEND_STR(&s.psock, localhostname);
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
+
+  PSOCK_READTO(&s.psock, ISO_nl);
+
+  if(s.inputbuffer[0] != ISO_2) {
+    PSOCK_CLOSE(&s.psock);
+    smtp_done(3);
+    PSOCK_EXIT(&s.psock);
+  }
+
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_mail_from);
+  PSOCK_SEND_STR(&s.psock, s.from);
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
+
+  PSOCK_READTO(&s.psock, ISO_nl);
+
+  if(s.inputbuffer[0] != ISO_2) {
+    PSOCK_CLOSE(&s.psock);
+    smtp_done(4);
+    PSOCK_EXIT(&s.psock);
+  }
+
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_rcpt_to);
+  PSOCK_SEND_STR(&s.psock, s.to);
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
+
+  PSOCK_READTO(&s.psock, ISO_nl);
+
+  if(s.inputbuffer[0] != ISO_2) {
+    PSOCK_CLOSE(&s.psock);
+    smtp_done(5);
+    PSOCK_EXIT(&s.psock);
+  }
+
+  if(s.cc != 0) {
+    PSOCK_SEND_STR(&s.psock, (char *)smtp_rcpt_to);
+    PSOCK_SEND_STR(&s.psock, s.cc);
+    PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
+
+    PSOCK_READTO(&s.psock, ISO_nl);
+
+    if(s.inputbuffer[0] != ISO_2) {
+      PSOCK_CLOSE(&s.psock);
+      smtp_done(6);
+      PSOCK_EXIT(&s.psock);
+    }
+  }
+
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_data);
+
+  PSOCK_READTO(&s.psock, ISO_nl);
+
+  if(s.inputbuffer[0] != ISO_3) {
+    PSOCK_CLOSE(&s.psock);
+    smtp_done(7);
+    PSOCK_EXIT(&s.psock);
+  }
+
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_to);
+  PSOCK_SEND_STR(&s.psock, s.to);
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
+
+  if(s.cc != 0) {
+    PSOCK_SEND_STR(&s.psock, (char *)smtp_cc);
+    PSOCK_SEND_STR(&s.psock, s.cc);
+    PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
+  }
+
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_from);
+  PSOCK_SEND_STR(&s.psock, s.from);
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
+
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_subject);
+  PSOCK_SEND_STR(&s.psock, s.subject);
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_crnl);
+
+  PSOCK_SEND(&s.psock, s.msg, s.msglen);
+
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_crnlperiodcrnl);
+
+  PSOCK_READTO(&s.psock, ISO_nl);
+  if(s.inputbuffer[0] != ISO_2) {
+    PSOCK_CLOSE(&s.psock);
+    smtp_done(8);
+    PSOCK_EXIT(&s.psock);
+  }
+
+  PSOCK_SEND_STR(&s.psock, (char *)smtp_quit);
+  smtp_done(SMTP_ERR_OK);
+  PSOCK_END(&s.psock);
+}
+/*---------------------------------------------------------------------------*/
+void
+smtp_appcall(void)
+{
+  if(uip_closed()) {
+    s.connected = 0;
+    return;
+  }
+  if(uip_aborted() || uip_timedout()) {
+    s.connected = 0;
+    smtp_done(1);
+    return;
+  }
+  smtp_thread();
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * Specificy an SMTP server and hostname.
+ *
+ * This function is used to configure the SMTP module with an SMTP
+ * server and the hostname of the host.
+ *
+ * \param lhostname The hostname of the uIP host.
+ *
+ * \param server A pointer to a 4-byte array representing the IP
+ * address of the SMTP server to be configured.
+ */
+void
+smtp_configure(char *lhostname, void *server)
+{
+  localhostname = lhostname;
+  uip_ipaddr_copy(smtpserver, server);
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * Send an e-mail.
+ *
+ * \param to The e-mail address of the receiver of the e-mail.
+ * \param cc The e-mail address of the CC: receivers of the e-mail.
+ * \param from The e-mail address of the sender of the e-mail.
+ * \param subject The subject of the e-mail.
+ * \param msg The actual e-mail message.
+ * \param msglen The length of the e-mail message.
+ */
+unsigned char
+smtp_send(char *to, char *cc, char *from,
+	  char *subject, char *msg, u16_t msglen)
+{
+  struct uip_conn *conn;
+
+  conn = uip_connect(smtpserver, HTONS(25));
+  if(conn == NULL) {
+    return 0;
+  }
+  s.connected = 1;
+  s.to = to;
+  s.cc = cc;
+  s.from = from;
+  s.subject = subject;
+  s.msg = msg;
+  s.msglen = msglen;
+
+  PSOCK_INIT(&s.psock, s.inputbuffer, sizeof(s.inputbuffer));
+
+  return 1;
+}
+/*---------------------------------------------------------------------------*/
+void
+smtp_init(void)
+{
+  s.connected = 0;
+}
+/*---------------------------------------------------------------------------*/
+/** @} */
+/** @} */
+/** @} */