Changes between Version 19 and Version 20 of Docs/825gen2/Dev/Networking/SendEmail

Timestamp:

02/29/24 13:45:31 (20 months ago)

Author:

Don Wilson

Comment:

--

Docs/825gen2/Dev/Networking/SendEmail

@@ -191 +191 @@
 }}}
 
+Example of sending an email from an app:
+
+{{{
+void TestSendEmail(const char* from, const char* to, const char* subject)
+{
+        FILE* file = fopen("/tmp/emailmsg.txt", "w");
+        if(file != NULL) {
+                fprintf(file, "From: %s\n", from);
+                fprintf(file, "To: %s\n", to);
+                fprintf(file, "Subject: %s\n", subject);
+                fprintf(file, "MIME-Version: 1.0\n");
+                fprintf(file, "Content-Type: multipart/mixed; boundary=\"MyBoundaryString\"");
+                fprintf(file, "\n");
+                fprintf(file, "\n");
+                fprintf(file, "--MyBoundaryString\n");
+                fprintf(file, "Content-Type: text/plain\n");
+                fprintf(file, "Content-Transfer-Encoding: 7bit\n");
+                fprintf(file, "\n");
+                fprintf(file, "\n");
+                fprintf(file, "Transaction %d\n", tran.tktNum);
+                fprintf(file, "\n");
+                fprintf(file, "Out: %s %s\n", tran.date.c_str(), tran.time.c_str());
+                fprintf(file, "In: %s %s\n", tran.inDate.c_str(), tran.inTime.c_str());
+                fprintf(file, "\n");
+                fprintf(file, "Truck: %s\n", tran.id[DB_TRUCK].c_str());
+                fprintf(file, "Product: %s\n", tran.id[DB_PROD].c_str());
+                fprintf(file, "Customer: %s\n", tran.id[DB_CUST].c_str());
+                fprintf(file, "Job: %s\n", tran.id[DB_JOB].c_str());
+                fprintf(file, "\n");
+                fprintf(file, "Gross: %s\n", tran.gross.c_str());
+                fprintf(file, "Tare: %s\n", tran.tare.c_str());
+                fprintf(file, "Net: %s\n", tran.net.c_str());
+                fprintf(file, "\n");
+                fprintf(file, "--MyBoundaryString\n");
+                fprintf(file, "Content-Type: image/jpeg\n");
+                fprintf(file, "Content-ID: <image11>\n");
+                fprintf(file, "Content-Transfer-Encoding: base64\n");
+                fprintf(file, "\n");
+
+                fclose(file);
+
+                // Convert second pass image into base64
+                char tmp[128];
+                sprintf_s(tmp, "base64 /usr/share/apache2/default-site/htdocs/images/v%06d_1.jpg > /tmp/attachment", tran.tktNum);
+                if(system(tmp) != 0) {
+                        DEBUG_MSG("Error encoding jpg into base64 [%s]\n", tmp);
+                } else {
+                        // Send it
+                        if(system("cat /tmp/emailmsg.txt /tmp/attachment | msmtp -t") != 0) {
+                                DEBUG_MSG("Error sending\n");
+                        }
+
+                }
+        }
+}
+}}}
+
+When transaction is completed app can call this function such as:
+{{{
+        char msg[80];
+        sprintf_s(msg, "ID Storage transaction %d", tran.tktNum);
+        TestSendEmail("myaccount@gmail.com", "someone@gmail.com", msg);
+}}}
+
 We may create or find a library to generate mime encoded emails from application code.