Rahol Rajan
Used in Live Traffic Update Nokia LCD Display Project
Fork of
NetServices
by 
Segundo Equipo
Diff: services/email/smtp/SMTPClient.cpp
- Revision:
- 5:fa27dde97304
- Parent:
- 0:ac1725ba162c
- Child:
- 6:d64fca63b94e
diff -r 966a0265edfc -r fa27dde97304 services/email/smtp/SMTPClient.cpp
--- a/services/email/smtp/SMTPClient.cpp Sun Nov 21 17:13:44 2010 +0000
+++ b/services/email/smtp/SMTPClient.cpp Sat Nov 27 23:23:43 2010 +0000
@@ -1,17 +1,17 @@
/*
-Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
-
+Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) y Segundo Equipo
+
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
-
+
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
-
+
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -20,225 +20,439 @@
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
-
+#include "core/netservice.h"
#include "SMTPClient.h"
-
-/*
- Provided as reference only, this code has not been tested.
-*/
-#if 0
-
-#include <stdio.h>
+#include "../util/base64.h"
#define __DEBUG
-#include "dbg.h"
+#include "dbg/dbg.h"
+
+#define CHUNK_SIZE 256 //512
+#define BUF_SIZE (CHUNK_SIZE + 1)
+
+#define SMTP_REQUEST_TIMEOUT 15000
+#define SMTP_PORT 25
-#define BUF_SIZE 128
-#define CHUNK_SIZE 512
+SMTPClient::SMTPClient() : NetService(false) /*Not owned by the pool*/,
+ m_pCbItem(NULL), m_pCbMeth(NULL), m_pCb(NULL),
+ m_watchdog(), m_timeout(SMTP_REQUEST_TIMEOUT), m_pDnsReq(NULL), m_server(),
+ m_closed(true), m_state(SMTP_CLOSED), m_pMessage(NULL),
+ m_posInMsg(0), m_blockingResult(SMTP_PROCESSING),
+ m_username(""), m_password(""), m_auth(SMTP_AUTH_NONE),
+ m_heloDomain("localhost") {
+ DBG("New SMTPClient %p\n", this);
+}
-SMTPClient::SMTPClient() : m_pMessage(NULL), m_nextState(SMTP_HELLO),
-m_pCbItem(NULL), m_pCbMeth(NULL), m_watchdog(), m_timeout(0), m_posInMsg(0), m_closed(true), m_host()
-{
- setTimeout(SMTP_REQUEST_TIMEOUT);
+SMTPClient::SMTPClient(const Host& host, const char* heloDomain, const char* user, const char* password, SMTPAuth auth) : NetService(false),
+ m_pCbItem(NULL), m_pCbMeth(NULL), m_pCb(NULL),
+ m_watchdog(), m_timeout(SMTP_REQUEST_TIMEOUT), m_pDnsReq(NULL), m_server(host),
+ m_closed(true), m_state(SMTP_CLOSED), m_pMessage(NULL),
+ m_posInMsg(0), m_blockingResult(SMTP_PROCESSING),
+ m_username(string(user)), m_password(string(password)), m_auth(auth),
+ m_heloDomain(heloDomain) {
+ DBG("New SMTPClient %p\n", this);
+}
+
+SMTPClient::~SMTPClient() {
+ close();
+}
+
+void SMTPClient::setAuth(const char* user, const char* password) { // Plain authentication
+ m_username = string(user);
+ m_password = string(password);
+ m_auth = SMTP_AUTH_PLAIN;
+}
+
+void SMTPClient::clearAuth() { // Clear authentication
+ m_username = "";
+ m_password = "";
+ m_auth = SMTP_AUTH_NONE;
}
-SMTPClient::~SMTPClient()
-{
- close();
+string SMTPClient::encodePlainAuth() {
+ string auth = "AUTH PLAIN ";
+ string decStr = m_username;
+ decStr += '\0';
+ decStr += m_username;
+ decStr += '\0';
+ decStr += m_password;
+
+ char* out = new char[ (((decStr.length()-1)/3)+1)<<2 ];
+ base64enc(decStr.c_str(), decStr.length(), out);
+ auth.append(string(out));
+ delete[] out;
+
+ return auth;
+}
+
+void SMTPClient::setHeloDomain(const char* heloDomain) {
+ m_heloDomain = string(heloDomain);
+}
+
+SMTPResult SMTPClient::send(EmailMessage* pMessage) { //Blocking
+ doSend(pMessage);
+ return blockingProcess();
+}
+
+SMTPResult SMTPClient::send(EmailMessage* pMessage, void (*pMethod)(SMTPResult)) { //Non blocking
+ setOnResult(pMethod);
+ doSend(pMessage);
+ return SMTP_PROCESSING;
+}
+
+void SMTPClient::doSend(EmailMessage* pMessage) {
+ setup(pMessage);
+}
+
+void SMTPClient::setOnResult( void (*pMethod)(SMTPResult) ) {
+ m_pCb = pMethod;
+ m_pCbItem = NULL;
+ m_pCbMeth = NULL;
+}
+
+void SMTPClient::setTimeout(int ms) {
+ m_timeout = ms;
+}
+
+void SMTPClient::poll() { //Called by NetServices
+ if ( (!m_closed) && (m_watchdog.read_ms() >= m_timeout) ) {
+ onTimeout();
+ }
}
-void SMTPClient::setHost(const Host& host)
-{
- m_host = host;
+void SMTPClient::resetTimeout() {
+ m_watchdog.reset();
+ m_watchdog.start();
+}
+
+void SMTPClient::init() { //Create and setup socket if needed
+ close(); //Remove previous elements
+ if (!m_closed) //Already opened
+ return;
+ m_state = SMTP_HELLO;
+ m_pTCPSocket = new TCPSocket;
+ m_pTCPSocket->setOnEvent(this, &SMTPClient::onTCPSocketEvent);
+ m_closed = false;
+ m_posInMsg = 0;
+ m_posInCRLF = 2;
+ m_response = "";
}
-
-void SMTPClient::send(EmailMessage* pMessage)
-{
- init();
- m_posInMsg = 0;
- m_nextState = SMTP_HELLO;
- if( !m_pTCPSocket->connect(m_host) )
- {
- close();
- onResult(SMTP_DISC);
- }
+
+void SMTPClient::close() {
+ if (m_closed)
+ return;
+ m_state = SMTP_CLOSED;
+ m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
+ m_watchdog.stop(); //Stop timeout
+ m_watchdog.reset();
+ m_pTCPSocket->resetOnEvent();
+ m_pTCPSocket->close();
+ delete m_pTCPSocket;
+ m_pTCPSocket = NULL;
+ if ( m_pDnsReq ) {
+ m_pDnsReq->close();
+ delete m_pDnsReq;
+ m_pDnsReq = NULL;
+ }
+}
+
+void SMTPClient::setServer(const Host& host) { //Setup request, make DNS Req if necessary
+ m_server = host;
}
-void SMTPClient::init() //Create and setup socket if needed
-{
- close(); //Remove previous elements
- if(!m_closed) //Already opened
- return;
- m_nextState = SMTP_HELLO;
- m_pTCPSocket = new TCPSocket;
- m_pTCPSocket->setOnEvent(this, &SMTPClient::onTCPSocketEvent);
- m_closed = false;
+void SMTPClient::setup(EmailMessage* pMessage) { //Setup request, make DNS Req if necessary
+
+ init(); //Initialize client in known state, create socket
+ m_pMessage = pMessage;
+ resetTimeout();
+
+ m_To = m_pMessage->m_lTo.begin(); // Point to first to recipient in TO list
+
+ //If port set to zero then use default port
+ if (!m_server.getPort()) {
+ m_server.setPort(SMTP_PORT);
+ DBG("Using default port %d\n", SMTP_PORT);
+ }
+
+ if (m_server.getIp().isNull()) {
+ //DNS query required
+ m_pDnsReq = new DNSRequest();
+ DBG("DNSRequest %p\r\n", m_pDnsReq);
+ m_pDnsReq->setOnReply(this, &SMTPClient::onDNSReply);
+ m_pDnsReq->resolve(&m_server);
+ return;
+ } else
+ connect();
+
+}
+
+void SMTPClient::connect() { //Start Connection
+ resetTimeout();
+ DBG("Connecting...\n");
+ m_pTCPSocket->connect(m_server);
}
-void SMTPClient::close()
-{
- if(m_closed)
- return;
- m_closed = true; //Prevent recursive calling or calling on an object being destructed by someone else
- m_watchdog.detach();
- m_pTCPSocket->resetOnEvent();
- m_pTCPSocket->close();
- delete m_pTCPSocket;
- m_pTCPSocket = NULL;
-}
+void SMTPClient::onTCPSocketEvent(TCPSocketEvent e) {
+
+ DBG("Event %d in SMTPClient::onTCPSocketEvent()\n", e);
+
+ if (m_closed) {
+ DBG("WARN: Discarded\n");
+ return;
+ }
-int SMTPClient::rc(char* buf) //Parse return code
-{
- int rc;
- int len = sscanf(buf, "%d %*[^\r\n]\r\n", &rc);
- if(len != 1)
- return -1;
- return rc;
+ switch (e) {
+ case TCPSOCKET_READABLE:
+ resetTimeout();
+ process(false);
+ break;
+ case TCPSOCKET_WRITEABLE:
+ resetTimeout();
+ process(true);
+ break;
+ case TCPSOCKET_CONTIMEOUT:
+ case TCPSOCKET_CONRST:
+ case TCPSOCKET_CONABRT:
+ case TCPSOCKET_ERROR:
+ DBG("Connection error in SMTP Client.\n");
+ close();
+ onResult(SMTP_DISC);
+ break;
+ case TCPSOCKET_DISCONNECTED:
+ if (m_state != SMTP_BYE) {
+ DBG("Connection error in SMTP Client.\n");
+ close();
+ onResult(SMTP_DISC);
+ }
+ break;
+ }
}
-#define MIN(a,b) ((a)<(b))?(a):(b)
-void SMTPClient::process(bool moreData) //Main state-machine
-{
- char buf[BUF_SIZE] = {0};
- if(moreData)
- {
- if( m_nextState != SMTP_BODYMORE )
- {
- return;
+void SMTPClient::onDNSReply(DNSReply r) {
+ if (m_closed) {
+ DBG("WARN: Discarded\n");
+ return;
+ }
+
+ if ( r != DNS_FOUND ) {
+ DBG("Could not resolve hostname.\n");
+ close();
+ onResult(SMTP_DNS);
+ return;
}
- }
- if(!moreData) //Receive next frame
- {
- m_pTCPSocket->recv(buf, BUF_SIZE - 1);
- }
-
- IpAddr myIp(0,0,0,0);
- string to;
- int sendLen;
-
- DBG("In state %d", m_nextState);
+
+ DBG("DNS Resolved to %d.%d.%d.%d\n", m_server.getIp()[0], m_server.getIp()[1], m_server.getIp()[2], m_server.getIp()[3]);
+ //If no error, m_server has been updated by m_pDnsReq so we're set to go !
+ m_pDnsReq->close();
+ delete m_pDnsReq;
+ m_pDnsReq = NULL;
+ connect();
+}
+
+void SMTPClient::onResult(SMTPResult r) { //Called when exchange completed or on failure
+ if (m_pCbItem && m_pCbMeth)
+ (m_pCbItem->*m_pCbMeth)(r);
+ else if (m_pCb)
+ m_pCb(r);
+ m_blockingResult = r; //Blocking mode
+}
- switch(m_nextState)
- {
- case SMTP_HELLO:
- if( rc(buf) != 220 )
- { close(); onResult(SMTP_PRTCL); return; }
- myIp = Net::getDefaultIf()->getIp();
- sprintf(buf, "HELO %d.%d.%d.%d\r\n", myIp[0], myIp[1], myIp[2], myIp[3]);
- m_nextState = SMTP_FROM;
- break;
- case SMTP_FROM:
- if( rc(buf) != 250 )
- { close(); onResult(SMTP_PRTCL); return; }
- sprintf(buf, "MAIL FROM:<%s>\r\n", m_pMessage->m_from.c_str());
- break;
- case SMTP_TO:
- if( rc(buf) != 250 )
- { close(); onResult(SMTP_PRTCL); return; }
- to = m_pMessage->m_lTo.front();
- sprintf(buf, "RCPT TO:<%s>\r\n", to.c_str());
- m_pMessage->m_lTo.pop();
- if(m_pMessage->m_lTo.empty())
- {
- m_nextState = SMTP_DATA;
- }
- break;
- case SMTP_DATA:
- if( rc(buf) != 250 )
- { close(); onResult(SMTP_PRTCL); return; }
- sprintf(buf, "DATA\r\n");
- break;
- case SMTP_BODY:
- if( rc(buf) != 354 )
- { close(); onResult(SMTP_PRTCL); return; }
- m_nextState = SMTP_BODYMORE;
- case SMTP_BODYMORE:
- sendLen = 0;
- if( m_posInMsg < m_pMessage->m_content.length() )
- {
- sendLen = MIN( (m_pMessage->m_content.length() - m_posInMsg), CHUNK_SIZE );
- m_pTCPSocket->send( m_pMessage->m_content.c_str() + m_posInMsg, sendLen );
- m_posInMsg += sendLen;
- }
- if( m_posInMsg == m_pMessage->m_content.length() )
- {
- sprintf(buf, "\r\n.\r\n"); //EOF
- m_nextState = SMTP_EOF;
- }
- break;
- case SMTP_EOF:
- if( rc(buf) != 250 )
- { close(); onResult(SMTP_PRTCL); return; }
- sprintf(buf, "QUIT\r\n");
- m_nextState = SMTP_BYE;
- break;
- case SMTP_BYE:
- if( rc(buf) != 221 )
- { close(); onResult(SMTP_PRTCL); return; }
+void SMTPClient::onTimeout() { //Connection has timed out
+ DBG("Timed out.\n");
close();
- onResult(SMTP_OK);
- break;
- }
-
- if( m_nextState != SMTP_BODYMORE )
- {
- m_pTCPSocket->send( buf, strlen(buf) );
- }
+ onResult(SMTP_TIMEOUT);
+}
+
+SMTPResult SMTPClient::blockingProcess() { //Called in blocking mode, calls Net::poll() until return code is available
+ //Disable callbacks
+ m_pCb = NULL;
+ m_pCbItem = NULL;
+ m_pCbMeth = NULL;
+ m_blockingResult = SMTP_PROCESSING;
+ do {
+ Net::poll();
+ } while (m_blockingResult == SMTP_PROCESSING);
+ Net::poll(); //Necessary for cleanup
+ return m_blockingResult;
+}
+
+int SMTPClient::rc(char* buf) { //Parse return code
+ int rc;
+ int len = sscanf(buf, "%d %*[^\r\n]\r\n", &rc);
+ if (len != 1)
+ return -1;
+ return rc;
+}
+
+bool SMTPClient::okPostAuthentication(int code) {
+ return (code == 250) || (code == 235);
}
-void SMTPClient::setTimeout(int ms)
-{
- m_timeout = 1000*ms;
- resetTimeout();
-}
+void SMTPClient::process(bool writeable) { //Main state-machine
+
+ DBG("In state %d, writeable %d\n", m_state, writeable);
+
+ // If writeable but nothing to write then return
+ if (writeable && (m_state != SMTP_BODYMORE))
+ return;
+
+ // If not writeable then read
+ char buf[BUF_SIZE] = {0};
+ int responseCode = -1;
+ if (!writeable) {
+ bool firstBuf = true;
+ int read;
+ do { // read until nothing left but only process the response from first buffer
+ read = m_pTCPSocket->recv(buf, BUF_SIZE - 1);
+ if (firstBuf) {
+ m_response = string(buf);
+ responseCode = rc(buf);
+ firstBuf = false;
+ DBG("Response %d %d | %s", read, responseCode, buf);
+ }
+ } while (read > 0);
+ }
-void SMTPClient::resetTimeout()
-{
- m_watchdog.detach();
- m_watchdog.attach_us<SMTPClient>(this, &SMTPClient::onTimeout, m_timeout);
+ switch (m_state) {
+ case SMTP_HELLO:
+ if ( responseCode != 220 ) {
+ close();
+ onResult(SMTP_PRTCL);
+ return;
+ }
+ char* helloCommand;
+ if (m_auth == SMTP_AUTH_NONE) {
+ helloCommand = "HELO";
+ m_state = SMTP_FROM;
+ } else {
+ helloCommand = "EHLO";
+ m_state = SMTP_AUTH;
+ }
+ snprintf(buf, BUF_SIZE, "%s %s\r\n", helloCommand, m_heloDomain.c_str());
+ break;
+ case SMTP_AUTH:
+ if ( responseCode != 250 ) {
+ close();
+ onResult(SMTP_PRTCL);
+ return;
+ }
+ snprintf(buf, BUF_SIZE, "%s\r\n", encodePlainAuth().c_str());
+ m_state = SMTP_FROM;
+ break;
+ case SMTP_FROM:
+ if (!okPostAuthentication(responseCode)) {
+ close();
+ onResult(SMTP_PRTCL);
+ return;
+ }
+ snprintf(buf, BUF_SIZE, "MAIL FROM:<%s>\r\n", m_pMessage->m_from.c_str());
+ m_state = SMTP_TO;
+ break;
+ case SMTP_TO:
+ if ( responseCode != 250 ) {
+ close();
+ onResult(SMTP_PRTCL);
+ return;
+ }
+ snprintf(buf, BUF_SIZE, "RCPT TO:<%s>\r\n", (m_To++)->c_str());
+ if (m_To == m_pMessage->m_lTo.end())
+ m_state = SMTP_DATA;
+ break;
+ case SMTP_DATA:
+ if ( responseCode != 250 ) {
+ close();
+ onResult(SMTP_PRTCL);
+ return;
+ }
+ snprintf(buf, BUF_SIZE, "DATA\r\n");
+ m_state = SMTP_BODY;
+ break;
+ case SMTP_BODY:
+ if ( responseCode != 354 ) {
+ close();
+ onResult(SMTP_PRTCL);
+ return;
+ }
+ m_state = SMTP_BODYMORE;
+ buf[0] = '\0'; // clear buffer before carrying on into next state
+ case SMTP_BODYMORE:
+ if (strlen(buf) > 0) { // sending interrupted by a server response
+ close();
+ onResult(SMTP_PRTCL);
+ return;
+ }
+
+ if ( m_posInMsg < m_pMessage->m_content.length() ) { // if still something to send
+ int sendLen = 0;
+ while (sendLen < BUF_SIZE - 1) { // - 1 to allow room for extra dot or CR or LF
+ char c = m_pMessage->m_content.at(m_posInMsg++);
+ switch (c) { // thanks ExtraDotOutputStream.java (with extra check for naked CR)
+ case '.':
+ if (m_posInCRLF == 2) // add extra dot
+ buf[sendLen++] = '.';
+ m_posInCRLF = 0;
+ break;
+ case '\r':
+ if (m_posInCRLF == 1) // two CR in a row, so insert an LF first
+ buf[sendLen++] = '\n';
+ m_posInCRLF = 1;
+ break;
+ case '\n':
+ if (m_posInCRLF != 1) // convert naked LF to CRLF
+ buf[sendLen++] = '\r';
+ m_posInCRLF = 2;
+ break;
+ default:
+ if (m_posInCRLF == 1) { // convert naked CR to CRLF
+ buf[sendLen++] = '\n';
+ m_posInCRLF = 2;
+ } else
+ m_posInCRLF = 0; // we're no longer at the start of a line
+ break;
+ }
+ buf[sendLen++] = c;
+ if ( m_posInMsg == m_pMessage->m_content.length() )
+ break;
+ }
+ m_pTCPSocket->send( buf, sendLen );
+ DBG("Sending %d bytes of processed message content\n", sendLen);
+ } else {
+ if (m_posInCRLF == 0)
+ snprintf(buf, BUF_SIZE, "\r\n.\r\n");
+ else if (m_posInCRLF == 1)
+ snprintf(buf, BUF_SIZE, "\n.\r\n");
+ else
+ snprintf(buf, BUF_SIZE, ".\r\n");
+ m_state = SMTP_EOF;
+ }
+ break;
+ case SMTP_EOF:
+ if ( responseCode != 250 ) {
+ close();
+ onResult(SMTP_PRTCL);
+ return;
+ }
+ snprintf(buf, BUF_SIZE, "QUIT\r\n");
+ m_state = SMTP_BYE;
+ break;
+ case SMTP_BYE:
+ if ( responseCode != 221 ) {
+ close();
+ onResult(SMTP_PRTCL);
+ return;
+ }
+ close();
+ onResult(SMTP_OK);
+ return;
+ }
+
+ if ( m_state != SMTP_BODYMORE ) {
+ DBG("Sending | %s", buf);
+ m_pTCPSocket->send( buf, strlen(buf) );
+ }
+
}
-void SMTPClient::onTimeout() //Connection has timed out
-{
- close();
- onResult(SMTP_TIMEOUT);
-}
-
-void SMTPClient::onTCPSocketEvent(TCPSocketEvent e)
-{
- switch(e)
- {
- case TCPSOCKET_READABLE:
- resetTimeout();
- process(false);
- break;
- case TCPSOCKET_WRITEABLE:
- resetTimeout();
- process(true);
- break;
- case TCPSOCKET_CONTIMEOUT:
- case TCPSOCKET_CONRST:
- case TCPSOCKET_CONABRT:
- case TCPSOCKET_ERROR:
- onResult(SMTP_DISC);
- DBG("\r\nConnection error in SMTP Client.\r\n");
- close();
- break;
- case TCPSOCKET_DISCONNECTED:
- if(m_nextState != SMTP_BYE)
- {
- onResult(SMTP_DISC);
- DBG("\r\nConnection error in SMTP Client.\r\n");
- close();
- }
- break;
- }
-}
-
-void SMTPClient::onResult(SMTPResult r) //Must be called by impl when the request completes
-{
- if(m_pCbItem && m_pCbMeth)
- (m_pCbItem->*m_pCbMeth)(r);
-}
-
-#endif
+string& SMTPClient::getLastResponse() { // Return last response set on result
+ return m_response;
+}
\ No newline at end of file