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Diffstat (limited to 'nuttx/netutils/smtp/smtp.c')
-rw-r--r-- | nuttx/netutils/smtp/smtp.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/nuttx/netutils/smtp/smtp.c b/nuttx/netutils/smtp/smtp.c new file mode 100644 index 000000000..98dd468e3 --- /dev/null +++ b/nuttx/netutils/smtp/smtp.c @@ -0,0 +1,252 @@ +/* smtp.c + * smtp SMTP E-mail sender + * Author: Adam Dunkels <adam@dunkels.com> + * + * 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. + * + * 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 1.1.1.1 2007-08-26 23:07:06 patacongo Exp $ + */ + +#include <sys/types.h> +#include <string.h> + +#include <net/uip/uip.h> +#include <net/uip/psock.h> +#include <net/uip/smtp.h> + +#include "smtp-strings.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 +void smtp_thread(void) +{ + psock_readto(&s.psock, ISO_nl); + + if(strncmp(s.inputbuffer, smtp_220, 3) != 0) { + PSOCK_CLOSE(&s.psock); + smtp_done(2); + pthread_exit(NULL); + } + + 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); + pthread_exit(NULL); + } + + 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); + pthread_exit(NULL); + } + + 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); + pthread_exit(NULL); + } + + 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); + pthread_exit(NULL); + } + } + + 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); + pthread_exit(NULL); + } + + 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); + pthread_exit(NULL); + } + + PSOCK_SEND_STR(&s.psock, (char *)smtp_quit); + smtp_done(SMTP_ERR_OK); +} + +/* This function is called by the UIP interrupt handling logic whenevent an + * event of interest occurs. + */ + +void uip_interrupt_event(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, uint16 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; +} +/*---------------------------------------------------------------------------*/ +/** @} */ +/** @} */ |