GainSpan Wi-Fi library

Diff: GSwifi/GSwifi_smtp.cpp

Revision:

12:057089026a20

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GSwifi/GSwifi_smtp.cpp	Fri Nov 22 14:03:07 2013 +0000
@@ -0,0 +1,145 @@
+/* Copyright (C) 2013 gsfan, MIT License
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "GSwifi.h"
+
+#ifdef CFG_ENABLE_SMTP
+
+int GSwifi::mail (const char *host, int port, const char *to, const char *from, const char *subject, const char *mesg, const char *user, const char *pwd) {
+    int ret = -1;
+    int cid;
+    char cmd[CFG_DATA_SIZE];
+    char ip[17];
+
+    if (!isAssociated() || _state.status != STAT_READY) return -1;
+
+    if (getHostByName(host, ip)) return -1;
+    if (! port) {
+        port = 25;
+    }
+
+    cid = open(PROTO_TCP, ip, port);
+    if (cid < 0) return -1;
+    DBG("cid %d\r\n", cid);
+
+    if (smtpWait(cid ,220)) goto exit;
+
+    // send request
+    snprintf(cmd, sizeof(cmd), "EHLO %s\r\n", _state.name);
+    send(cid, cmd, strlen(cmd));
+    wait_ms(100);
+    if (smtpWait(cid ,250)) goto quit;
+    smtpWait(cid ,0);
+
+    if (user && pwd) {
+        // smtp auth
+        int len;
+        snprintf(cmd, sizeof(cmd), "%s%c%s%c%s", user, 0, user, 0, pwd);
+        len = strlen(user) * 2 + strlen(pwd) + 2;
+        char tmp[len + (len / 2)];
+        base64encode(cmd, len, tmp, sizeof(tmp));
+        snprintf(cmd, sizeof(cmd), "AUTH PLAIN %s\r\n", tmp);
+        send(cid, cmd, strlen(cmd));
+        if (smtpWait(cid ,235)) goto quit;
+    }
+ 
+    snprintf(cmd, sizeof(cmd), "MAIL FROM: %s\r\n", from);
+    send(cid, cmd, strlen(cmd));
+    if (smtpWait(cid ,250)) goto quit;
+ 
+    snprintf(cmd, sizeof(cmd), "RCPT TO: %s\r\n", to);
+    send(cid, cmd, strlen(cmd));
+    if (smtpWait(cid ,250)) goto quit;
+ 
+    strcpy(cmd, "DATA\r\n");
+    send(cid, cmd, strlen(cmd));
+    if (smtpWait(cid ,354)) goto quit;
+ 
+    // mail data
+    snprintf(cmd, sizeof(cmd), "From: %s\r\n", from);
+    send(cid, cmd, strlen(cmd));
+    snprintf(cmd, sizeof(cmd), "To: %s\r\n", to);
+    send(cid, cmd, strlen(cmd));
+    snprintf(cmd, sizeof(cmd), "Subject: %s\r\n\r\n", subject);
+    send(cid, cmd, strlen(cmd));
+
+    send(cid, mesg, strlen(mesg));
+    strcpy(cmd, "\r\n.\r\n");
+    send(cid, cmd, strlen(cmd));
+    if (smtpWait(cid ,250)) goto quit;
+    ret = 0;
+
+    INFO("Mail, from: %s, to: %s %d\r\n", from, to, strlen(mesg));
+
+quit:
+    strcpy(cmd, "QUIT\r\n");
+    send(cid, cmd, strlen(cmd));
+    smtpWait(cid ,221);
+exit:
+    close(cid);
+    return ret;
+}
+
+int GSwifi::smtpWait (int cid, int code) {
+    Timer timeout;
+    int i, n, len = 0;
+    char buf[CFG_CMD_SIZE], data[CFG_CMD_SIZE];
+
+    if (code == 0) {
+        // dummy read
+        timeout.start();
+        while (timeout.read_ms() < CFG_TIMEOUT) {
+            wait_ms(10);
+            if (!readable(cid)) break;
+            n = recv(cid, buf, sizeof(buf));
+            if (n <= 0) break;
+        }
+        timeout.stop();
+        return 0;
+    }
+
+    // wait responce
+    len = 0;
+    timeout.start();
+    while (timeout.read_ms() < CFG_TIMEOUT) {
+        wait_ms(10);
+        n = recv(cid, buf, sizeof(buf));
+        for (i = 0; i < n; i ++) {
+            if (buf[i] == '\r') continue;
+            if (buf[i] == '\n') {
+                if (len == 0) continue;
+                goto next;
+            } else
+            if (len < sizeof(data) - 1) {
+                data[len] = buf[i];
+                len ++;
+            }
+        }
+    }
+next:
+    data[len] = 0;
+    DBG("smtp: %s\r\n", data);
+    timeout.stop();
+ 
+    // check return code
+    i = atoi(data);
+    DBG("smtp status %d\r\n", i);
+    return i == code ? 0 : -1;
+}
+
+#endif