email_file_example/main.c

// ////////////////////////////////////////////////////////////////////////////
//
// Example program initializes the email library using an imaginary 
// email account and attempts to send an email with a file attachment 
// to an imaginary email address.  The configuration is saved in a file and 
// the configuration file is then used to send a second email with a file 
// attachment to an imaginary email address.  This program does not actually 
// send an email. A real email account and email address are required 
// to actually send an email.
//
// ////////////////////////////////////////////////////////////////////////////
 
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "toolkit_email_device_api_ansi_c.h"
#include "toolkit_ds_api_ansi_c.h"
#include "trek_error.h"
#include <sys/timeb.h>
#include <string.h>
#include "trek_toolkit_common_api_ansi_c.h"
#include "ds_shared.h"
#ifdef __linux__
#include <unistd.h>
#else
#include <Windows.h>
#endif
 
// ////////////////////////////////////////////////////////////////////////////
//
// PrintTheMessage controls how messages are processed and displayed to  
// the user.
//
// ////////////////////////////////////////////////////////////////////////////
 
void PrintTheMessage(message_struct_type *mess_struct_ptr)
{
    printf("%s%s\n", GetMessageCategoryAsPaddedString(mess_struct_ptr->category),
        mess_struct_ptr->message);
}
 
// ////////////////////////////////////////////////////////////////////////////
//
// CreateDataFile creates a text file.
//
// ////////////////////////////////////////////////////////////////////////////
 
int CreateDataFile(char *pathname)
{
    FILE *file_ptr = NULL;
    char fill_data[250];
    if ((file_ptr = fopen(pathname, "w")) == NULL)
    {
        printf("Error    Failed to open example data file.\n");
        return(FAIL);
    }
    // Write to data file 
    strcpy(fill_data, "My test file for my email file attachment example.");
    fwrite(fill_data, 1, strlen(fill_data), file_ptr);
    fflush(file_ptr);
    fclose(file_ptr);
    return(SUCCESS);
}
 
// ////////////////////////////////////////////////////////////////////////////
//
// Example program initializes the email library using an imaginary 
// email account and attempts to send an email with a file attachment 
// to an imaginary email address.  The configuration is saved in a file and 
// the configuration file is then used to send a second email with a file 
// attachment to an imaginary email address.  This program does not actually 
// send an email. A real email account and email address are required 
// to actually send an email.
//
// ////////////////////////////////////////////////////////////////////////////
 
int main(int argc, char *argv[])
{
    char smtp_server_address[50]; 
    char email_account_username[50];
    char email_account_password[50];
    char email_address[50];
    char email_name[50];
    boolean_type  verify_cert_authorities;
    boolean_type  generate_curl_debug_messages;
    char ca_path_and_filename[100];
    char to_email_address[50];
    char to_email_name[50];
    char email_subject[50];
    char email_message[50];
    char filename[256];
    char pathname[256];
 
    struct timeb timebuffer;
    char home_path[256];
 
    if (TCAACGetHomeDirectory(home_path, sizeof(home_path)) != SUCCESS)
    {
        return(FAIL);
    }
 
    // Create an example data files 
    ftime(&timebuffer);
    sprintf(filename, "email_file_example_%u.txt", (unsigned int)timebuffer.time);
    sprintf(pathname, "%s/%s", home_path,filename);
    if (CreateDataFile(pathname) == FAIL)
    {
        return(FAIL);
    }
 
    strcpy(smtp_server_address, "smtp.gmail.com");
    strcpy(email_account_username, "mrsock@gmail.com");
    strcpy(email_account_password, "liveandprosper");
    strcpy(email_address, "mrsock@gmail.com");
    strcpy(email_name, "Mr Sock");
    verify_cert_authorities = TRUE_OR_YES;
    generate_curl_debug_messages = TRUE_OR_YES;
    strcpy(ca_path_and_filename,"curl-ca-bundle.crt");
    
    // Register the PrintMessage callback function prior to InitializeToolkitEmail to 
    // process error messages that may be generated during initialization 
    RegisterMessage(&PrintTheMessage);
    // Intializes the email and texting library using input parameters. This function creates the 
    // email thread.
    if (InitializeToolkitEmail(smtp_server_address, email_account_username, email_account_password,
        email_address, email_name, verify_cert_authorities, generate_curl_debug_messages) == SUCCESS)
    {
        // Sets an alternate path and/or file name for the Certificate Authorities(CA) file referenced by curl 
        // if curl has been configured to verify CAs.  Curl's default CA file name is "curl-ca-bundle.crt".
        if (SetCertAuthoritesPathAndFilename(ca_path_and_filename) == SUCCESS)
        {
            // Adds "to" address information to a list of email addresses and associate the email address with a 
            // group name.
            strcpy(to_email_address, "captkirt@nasa.gov");
            strcpy(to_email_name, "Captain Kirt");
 
            if (AddToEmailAddress(to_email_address, to_email_name, "") == SUCCESS)
            {
                // Create the email subject and message.
                strcpy(email_subject, "Dogs and Cats");
                strcpy(email_message, "Dogs are smarter than cats.");
 
                // Sends the email with a file attachment to the designated email addresses.
                if (SendEmailWithFile(email_subject, email_message, to_email_address, home_path, filename) != SUCCESS)
                {
                    printf("Error    Failed to SendEmailWithFile.\n");
                    DSCleanUp();
                    return 0;
                }
            }
            else
            {
                printf("Error    Failed to AddToEmailAddress.\n");
                DSCleanUp();
                return 0;
            }
        }
        else
        {
            printf("Error    Failed to SetCertAuthoritesPathAndFilename.\n");
            DSCleanUp();
            return 0;
        }
    }
    else
    { 
        printf("Error    Failed to InitializeToolkitEmail.\n");
        DSCleanUp();
        return 0;
    }
 
    // Sleep 10 second prior to exiting.
    #ifdef __linux__
    sleep(10);
    #else
    Sleep(10000);
    #endif
    
    char config_pathname[256];
    sprintf(config_pathname, "%s/email_config.txt", home_path);
 
    // Save the configuration in a file
    SaveToolkitEmailConfig(config_pathname);
 
    DSCleanUp();
 
    // Create an example data files 
    ftime(&timebuffer);
    sprintf(filename, "email_file_example_%u.txt", (unsigned int)timebuffer.time);
    sprintf(pathname, "%s/%s", home_path, filename);
    if (CreateDataFile(pathname) == FAIL)
    {
        return(FAIL);
    }
 
    // Now send an email with a file attachment using the configuration file
    if (InitToolkitEmail(config_pathname, "liveandprosper") != SUCCESS)
    {
        printf("Error    Failed to InitToolkitEmail.\n");
    }
    else
    {
        // Create the email subject and message.
        strcpy(email_subject, "Dogs and Cats");
        strcpy(email_message, "Dogs are smarter than cats.");
 
        // Sends the email with a file attachment to the designated email addresses.
        if (SendEmailWithFile(email_subject, email_message, to_email_address, home_path, filename) != SUCCESS)
        {
            printf("Error    Failed to SendEmailWithFile.\n");
            DSCleanUp();
            return 0;
        }
    }
 
    // Sleep 10 second prior to exiting.
    #ifdef __linux__
    sleep(10);
    #else
    Sleep(10000);
    #endif
    
    DSCleanUp();
 
    return 0;
}