Tadao Iida / SimpleSMTPClient

EthernetInｔerface Libraryを使ったSimpleな SMTP ClientLibraryです． LOGIN認証を追加しました．(2014.4 Update) It is SMTPClient Library which is Simple using EthernetInterface Library.

Dependents:   SimpleSMTPClient_HelloWorld USBHost-MSD_Sensors_1 IOT-GPS-SMS IOT_HW_5_websockets ... more

SimpleSMTPClient.cpp@0:3ea21ce21fe1, 2012-12-03 (annotated)

Committer:
sunifu
Date:
Mon Dec 03 09:55:59 2012 +0000
Revision:
0:3ea21ce21fe1
Child:
1:58550f022776
Child:
3:67a97516c315
Ver1.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sunifu 0:3ea21ce21fe1 1 /*
sunifu 0:3ea21ce21fe1 2 *
sunifu 0:3ea21ce21fe1 3 * mbed Simple SMTP Client
sunifu 0:3ea21ce21fe1 4 * Copyright (c) 2012 Tadao Iida
sunifu 0:3ea21ce21fe1 5 * Released under the MIT License: http://mbed.org/license/mit
sunifu 0:3ea21ce21fe1 6 */
sunifu 0:3ea21ce21fe1 7
sunifu 0:3ea21ce21fe1 8 //Debug is disabled by default
sunifu 0:3ea21ce21fe1 9 #if 0
sunifu 0:3ea21ce21fe1 10 //Enable debug
sunifu 0:3ea21ce21fe1 11 #define __DEBUG__
sunifu 0:3ea21ce21fe1 12 #include <cstdio>
sunifu 0:3ea21ce21fe1 13 #define DBG(x, ...) std::printf("[NTPClient : DBG]"x"\r\n", ##__VA_ARGS__);
sunifu 0:3ea21ce21fe1 14
sunifu 0:3ea21ce21fe1 15 #else
sunifu 0:3ea21ce21fe1 16 //Disable debug
sunifu 0:3ea21ce21fe1 17 #define DBG(x, ...)
sunifu 0:3ea21ce21fe1 18
sunifu 0:3ea21ce21fe1 19 #endif
sunifu 0:3ea21ce21fe1 20
sunifu 0:3ea21ce21fe1 21 /** @file
sunifu 0:3ea21ce21fe1 22 * @brief Simple SMTP Client
sunifu 0:3ea21ce21fe1 23 */
sunifu 0:3ea21ce21fe1 24
sunifu 0:3ea21ce21fe1 25 #include "mbed.h"
sunifu 0:3ea21ce21fe1 26 #include "EthernetInterface.h"
sunifu 0:3ea21ce21fe1 27 #include "SimpleSMTPClient.h"
sunifu 0:3ea21ce21fe1 28
sunifu 0:3ea21ce21fe1 29 SimpleSMTPClient::SimpleSMTPClient() : smtp()
sunifu 0:3ea21ce21fe1 30 {
sunifu 0:3ea21ce21fe1 31
sunifu 0:3ea21ce21fe1 32
sunifu 0:3ea21ce21fe1 33 }
sunifu 0:3ea21ce21fe1 34
sunifu 0:3ea21ce21fe1 35
sunifu 0:3ea21ce21fe1 36 // Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
sunifu 0:3ea21ce21fe1 37 int SimpleSMTPClient::base64enc(const char *input, unsigned int length, char *output, int outputlen) {
sunifu 0:3ea21ce21fe1 38 static const char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
sunifu 0:3ea21ce21fe1 39 unsigned int c, c1, c2, c3;
sunifu 0:3ea21ce21fe1 40
sunifu 0:3ea21ce21fe1 41 if (outputlen < (((length-1)/3)+1)<<2) return -1;
sunifu 0:3ea21ce21fe1 42
sunifu 0:3ea21ce21fe1 43 for(unsigned int i = 0, j = 0; i<length; i+=3,j+=4) {
sunifu 0:3ea21ce21fe1 44 c1 = ((((unsigned char)*((unsigned char *)&input[i]))));
sunifu 0:3ea21ce21fe1 45 c2 = (length>i+1)?((((unsigned char)*((unsigned char *)&input[i+1])))):0;
sunifu 0:3ea21ce21fe1 46 c3 = (length>i+2)?((((unsigned char)*((unsigned char *)&input[i+2])))):0;
sunifu 0:3ea21ce21fe1 47
sunifu 0:3ea21ce21fe1 48 c = ((c1 & 0xFC) >> 2);
sunifu 0:3ea21ce21fe1 49 output[j+0] = base64[c];
sunifu 0:3ea21ce21fe1 50 c = ((c1 & 0x03) << 4) | ((c2 & 0xF0) >> 4);
sunifu 0:3ea21ce21fe1 51 output[j+1] = base64[c];
sunifu 0:3ea21ce21fe1 52 c = ((c2 & 0x0F) << 2) | ((c3 & 0xC0) >> 6);
sunifu 0:3ea21ce21fe1 53 output[j+2] = (length>i+1)?base64[c]:'=';
sunifu 0:3ea21ce21fe1 54 c = (c3 & 0x3F);
sunifu 0:3ea21ce21fe1 55 output[j+3] = (length>i+2)?base64[c]:'=';
sunifu 0:3ea21ce21fe1 56 }
sunifu 0:3ea21ce21fe1 57 output[(((length-1)/3)+1)<<2] = '\0';
sunifu 0:3ea21ce21fe1 58 return 0;
sunifu 0:3ea21ce21fe1 59 }
sunifu 0:3ea21ce21fe1 60
sunifu 0:3ea21ce21fe1 61 // SMTP ReceiveMessage
sunifu 0:3ea21ce21fe1 62 int SimpleSMTPClient::receiveMessage(int code) {
sunifu 0:3ea21ce21fe1 63 int i;
sunifu 0:3ea21ce21fe1 64 char buf[1500];
sunifu 0:3ea21ce21fe1 65
sunifu 0:3ea21ce21fe1 66 do{
sunifu 0:3ea21ce21fe1 67 i = smtp.receive(buf, sizeof(buf));
sunifu 0:3ea21ce21fe1 68 buf[i]='\0';
sunifu 0:3ea21ce21fe1 69 printf("Recv>>%s[%d] \r\n",buf,i);
sunifu 0:3ea21ce21fe1 70 }while(atoi(buf) != code && i > 0 );
sunifu 0:3ea21ce21fe1 71
sunifu 0:3ea21ce21fe1 72 // Check return code
sunifu 0:3ea21ce21fe1 73 if (i < 0 )
sunifu 0:3ea21ce21fe1 74 return -1;
sunifu 0:3ea21ce21fe1 75
sunifu 0:3ea21ce21fe1 76 return 0;
sunifu 0:3ea21ce21fe1 77 }
sunifu 0:3ea21ce21fe1 78
sunifu 0:3ea21ce21fe1 79 int SimpleSMTPClient::sendmail (char *host, char *user, char *pwd, char *port,SMTPAuth auth) {
sunifu 0:3ea21ce21fe1 80
sunifu 0:3ea21ce21fe1 81 int ret = -1;
sunifu 0:3ea21ce21fe1 82
sunifu 0:3ea21ce21fe1 83 smtp.set_blocking(false, 1500);
sunifu 0:3ea21ce21fe1 84 smtp.connect(host, atoi(port)) ;
sunifu 0:3ea21ce21fe1 85 if ( !smtp.is_connected() ){
sunifu 0:3ea21ce21fe1 86 printf("Connection Error!\r\n");
sunifu 0:3ea21ce21fe1 87 smtp.close();
sunifu 0:3ea21ce21fe1 88 return -1;
sunifu 0:3ea21ce21fe1 89 }
sunifu 0:3ea21ce21fe1 90
sunifu 0:3ea21ce21fe1 91 // send request
sunifu 0:3ea21ce21fe1 92 wait_ms(100);
sunifu 0:3ea21ce21fe1 93 smtp.send("EHLO mbed\r\n", 11);
sunifu 0:3ea21ce21fe1 94 if (receiveMessage(250)){
sunifu 0:3ea21ce21fe1 95 smtp.close();
sunifu 0:3ea21ce21fe1 96 return -1;
sunifu 0:3ea21ce21fe1 97 }
sunifu 0:3ea21ce21fe1 98
sunifu 0:3ea21ce21fe1 99 if ( auth == SMTP_AUTH_PLAIN ){
sunifu 0:3ea21ce21fe1 100 if ( user && pwd ) {
sunifu 0:3ea21ce21fe1 101 // SMTP auth
sunifu 0:3ea21ce21fe1 102 char tmp[80], buf[100];
sunifu 0:3ea21ce21fe1 103 int len;
sunifu 0:3ea21ce21fe1 104 snprintf(tmp, sizeof(tmp), "%s%c%s%c%s",user, 0, user, 0, pwd);
sunifu 0:3ea21ce21fe1 105 len = strlen(user)*2 + strlen(pwd) + 2;
sunifu 0:3ea21ce21fe1 106 base64enc(tmp, len, buf, sizeof(buf));
sunifu 0:3ea21ce21fe1 107 smtp.send("AUTH PLAIN ", 11);
sunifu 0:3ea21ce21fe1 108 smtp.send(buf, strlen(buf));
sunifu 0:3ea21ce21fe1 109 smtp.send("\r\n", 2);
sunifu 0:3ea21ce21fe1 110 #ifdef __DEBUG__
sunifu 0:3ea21ce21fe1 111 DBG("base64[%s]\r\n", buf);
sunifu 0:3ea21ce21fe1 112 #endif
sunifu 0:3ea21ce21fe1 113 if (receiveMessage(235)){
sunifu 0:3ea21ce21fe1 114 smtp.send("QUIT\r\n", 6);
sunifu 0:3ea21ce21fe1 115 smtp.close();
sunifu 0:3ea21ce21fe1 116 }
sunifu 0:3ea21ce21fe1 117 }
sunifu 0:3ea21ce21fe1 118 }
sunifu 0:3ea21ce21fe1 119
sunifu 0:3ea21ce21fe1 120 smtp.send("MAIL FROM: ", 11);
sunifu 0:3ea21ce21fe1 121 smtp.send(getFromAddress(), strlen(getFromAddress()));
sunifu 0:3ea21ce21fe1 122 smtp.send("\r\n", 2);
sunifu 0:3ea21ce21fe1 123 if (receiveMessage(250)) {
sunifu 0:3ea21ce21fe1 124 smtp.close();
sunifu 0:3ea21ce21fe1 125 return -1;
sunifu 0:3ea21ce21fe1 126 }
sunifu 0:3ea21ce21fe1 127 char tmp[128],addr[128];
sunifu 0:3ea21ce21fe1 128 int i = 0;
sunifu 0:3ea21ce21fe1 129 strcpy(tmp,getToAddress());
sunifu 0:3ea21ce21fe1 130
sunifu 0:3ea21ce21fe1 131 while( tmp[i] != '\0' ){
sunifu 0:3ea21ce21fe1 132 int j = 0;
sunifu 0:3ea21ce21fe1 133 while( tmp[i] != ',' ){
sunifu 0:3ea21ce21fe1 134 addr[j] = tmp[i];
sunifu 0:3ea21ce21fe1 135
sunifu 0:3ea21ce21fe1 136 if( tmp[i] == '\0' ) break;
sunifu 0:3ea21ce21fe1 137 j++;
sunifu 0:3ea21ce21fe1 138 i++;
sunifu 0:3ea21ce21fe1 139 }
sunifu 0:3ea21ce21fe1 140 addr[j]='\0';
sunifu 0:3ea21ce21fe1 141
sunifu 0:3ea21ce21fe1 142 #ifdef __DEBUG__
sunifu 0:3ea21ce21fe1 143 DBG("ToAddress[%s]\r\n", addr);
sunifu 0:3ea21ce21fe1 144 #endif
sunifu 0:3ea21ce21fe1 145
sunifu 0:3ea21ce21fe1 146 smtp.send("RCPT TO: ", 9);
sunifu 0:3ea21ce21fe1 147 smtp.send(addr, strlen(addr));
sunifu 0:3ea21ce21fe1 148 smtp.send("\r\n", 2);
sunifu 0:3ea21ce21fe1 149 if(tmp[i]==',') i++;
sunifu 0:3ea21ce21fe1 150
sunifu 0:3ea21ce21fe1 151 if (receiveMessage(250)) goto exit;
sunifu 0:3ea21ce21fe1 152 }
sunifu 0:3ea21ce21fe1 153 ret = makeHeader();
sunifu 0:3ea21ce21fe1 154 if ( ret == -1 ) {
sunifu 0:3ea21ce21fe1 155 printf("The headers are less than 256 characters.\r\n");
sunifu 0:3ea21ce21fe1 156 goto exit ;
sunifu 0:3ea21ce21fe1 157 }
sunifu 0:3ea21ce21fe1 158
sunifu 0:3ea21ce21fe1 159 // mail Body
sunifu 0:3ea21ce21fe1 160 smtp.send("DATA\r\n", 6);
sunifu 0:3ea21ce21fe1 161 smtp.send(getHeader(), strlen(getHeader()));
sunifu 0:3ea21ce21fe1 162 smtp.send(getMessage(), strlen(getMessage()));
sunifu 0:3ea21ce21fe1 163 if (receiveMessage(354)) goto exit;
sunifu 0:3ea21ce21fe1 164
sunifu 0:3ea21ce21fe1 165 smtp.send("\r\n.\r\n", 5);
sunifu 0:3ea21ce21fe1 166 if (receiveMessage(250)) goto exit;
sunifu 0:3ea21ce21fe1 167 #ifdef __DEBUG__
sunifu 0:3ea21ce21fe1 168 DBG("Header %s\r\n", getHeader());
sunifu 0:3ea21ce21fe1 169 DBG("Message %s\r\n", getMessage());
sunifu 0:3ea21ce21fe1 170 #endif
sunifu 0:3ea21ce21fe1 171
sunifu 0:3ea21ce21fe1 172 ret = 0;
sunifu 0:3ea21ce21fe1 173
sunifu 0:3ea21ce21fe1 174 smtp.send("QUIT\r\n", 6);
sunifu 0:3ea21ce21fe1 175 if (receiveMessage(221)) goto exit;
sunifu 0:3ea21ce21fe1 176
sunifu 0:3ea21ce21fe1 177 exit:
sunifu 0:3ea21ce21fe1 178 smtp.close();
sunifu 0:3ea21ce21fe1 179
sunifu 0:3ea21ce21fe1 180 return ret;
sunifu 0:3ea21ce21fe1 181 }
sunifu 0:3ea21ce21fe1 182
sunifu 0:3ea21ce21fe1 183 int SimpleSMTPClient::setMessage(char *sub,char *msg)
sunifu 0:3ea21ce21fe1 184 {
sunifu 0:3ea21ce21fe1 185 int n;
sunifu 0:3ea21ce21fe1 186 n = strlen(sub);
sunifu 0:3ea21ce21fe1 187 if( n >= 64 )
sunifu 0:3ea21ce21fe1 188 return -1;
sunifu 0:3ea21ce21fe1 189 n = strlen(msg);
sunifu 0:3ea21ce21fe1 190 if( n >= 1244 )
sunifu 0:3ea21ce21fe1 191 return -1;
sunifu 0:3ea21ce21fe1 192 strcpy(subject,sub);
sunifu 0:3ea21ce21fe1 193 strcpy(message,msg);
sunifu 0:3ea21ce21fe1 194 return 0;
sunifu 0:3ea21ce21fe1 195 }
sunifu 0:3ea21ce21fe1 196
sunifu 0:3ea21ce21fe1 197 int SimpleSMTPClient::addMessage(char *buf)
sunifu 0:3ea21ce21fe1 198 {
sunifu 0:3ea21ce21fe1 199 int n;
sunifu 0:3ea21ce21fe1 200 n = strlen(message);
sunifu 0:3ea21ce21fe1 201 n = n+strlen(buf);
sunifu 0:3ea21ce21fe1 202 if( n >= 1244 )
sunifu 0:3ea21ce21fe1 203 return -1;
sunifu 0:3ea21ce21fe1 204 strcat(message,buf);
sunifu 0:3ea21ce21fe1 205 return 0;
sunifu 0:3ea21ce21fe1 206 }
sunifu 0:3ea21ce21fe1 207
sunifu 0:3ea21ce21fe1 208 int SimpleSMTPClient::setFromAddress(char *fromaddr)
sunifu 0:3ea21ce21fe1 209 {
sunifu 0:3ea21ce21fe1 210 int n;
sunifu 0:3ea21ce21fe1 211 n = strlen(fromaddr);
sunifu 0:3ea21ce21fe1 212 if( n <= 0 )
sunifu 0:3ea21ce21fe1 213 return -1;
sunifu 0:3ea21ce21fe1 214 strcpy(from,fromaddr);
sunifu 0:3ea21ce21fe1 215
sunifu 0:3ea21ce21fe1 216 return n;
sunifu 0:3ea21ce21fe1 217 }
sunifu 0:3ea21ce21fe1 218 char* SimpleSMTPClient::getFromAddress()
sunifu 0:3ea21ce21fe1 219 {
sunifu 0:3ea21ce21fe1 220 return from;
sunifu 0:3ea21ce21fe1 221 }
sunifu 0:3ea21ce21fe1 222 int SimpleSMTPClient::setToAddress(char *toaddr)
sunifu 0:3ea21ce21fe1 223 {
sunifu 0:3ea21ce21fe1 224 int n;
sunifu 0:3ea21ce21fe1 225 n = strlen(toaddr);
sunifu 0:3ea21ce21fe1 226 if( n <= 0 && 128 <= n)
sunifu 0:3ea21ce21fe1 227 return -1;
sunifu 0:3ea21ce21fe1 228 strcpy(to,toaddr);
sunifu 0:3ea21ce21fe1 229
sunifu 0:3ea21ce21fe1 230 return n;
sunifu 0:3ea21ce21fe1 231 }
sunifu 0:3ea21ce21fe1 232 char* SimpleSMTPClient::getToAddress()
sunifu 0:3ea21ce21fe1 233 {
sunifu 0:3ea21ce21fe1 234 return to;
sunifu 0:3ea21ce21fe1 235 }
sunifu 0:3ea21ce21fe1 236
sunifu 0:3ea21ce21fe1 237 char* SimpleSMTPClient::getSubject()
sunifu 0:3ea21ce21fe1 238 {
sunifu 0:3ea21ce21fe1 239 return subject;
sunifu 0:3ea21ce21fe1 240 }
sunifu 0:3ea21ce21fe1 241
sunifu 0:3ea21ce21fe1 242 char* SimpleSMTPClient::getHeader()
sunifu 0:3ea21ce21fe1 243 {
sunifu 0:3ea21ce21fe1 244 return header;
sunifu 0:3ea21ce21fe1 245 }
sunifu 0:3ea21ce21fe1 246
sunifu 0:3ea21ce21fe1 247 char* SimpleSMTPClient::getMessage()
sunifu 0:3ea21ce21fe1 248 {
sunifu 0:3ea21ce21fe1 249 return message;
sunifu 0:3ea21ce21fe1 250 }
sunifu 0:3ea21ce21fe1 251
sunifu 0:3ea21ce21fe1 252 int SimpleSMTPClient::makeHeader(void)
sunifu 0:3ea21ce21fe1 253 {
sunifu 0:3ea21ce21fe1 254 strcpy(header, "From: ");
sunifu 0:3ea21ce21fe1 255 strcat(header, getFromAddress());
sunifu 0:3ea21ce21fe1 256 strcat(header, "\r\n");
sunifu 0:3ea21ce21fe1 257 strcat(header, "To: " );
sunifu 0:3ea21ce21fe1 258 strcat(header, getToAddress());
sunifu 0:3ea21ce21fe1 259 strcat(header, "\r\n");
sunifu 0:3ea21ce21fe1 260 strcat(header, "Subject: ");
sunifu 0:3ea21ce21fe1 261 strcat(header, getSubject());
sunifu 0:3ea21ce21fe1 262 strcat(header, "\r\n\r\n") ;
sunifu 0:3ea21ce21fe1 263
sunifu 0:3ea21ce21fe1 264 if ( strlen(header) > 256 )
sunifu 0:3ea21ce21fe1 265 return -1;
sunifu 0:3ea21ce21fe1 266 return 0;
sunifu 0:3ea21ce21fe1 267 }