source: AE/RequestHelp/src/main.c@ 1011

#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <dirent.h>

#include "quickmail.h"
#include "mailFromGui.h"

#define TO          "ae-support@oni2.net"
#define SMTPSERVER  "mail.illy.bz"
#define SUBJECT     "AE support request"
#define SMTPPORT    25
#define SMTPUSER    NULL
#define SMTPPASS    NULL

static void appendString(char** buffer, unsigned int* bufsize, char* append) {
        if ((strlen(*buffer) + strlen(append) + 2) >= *bufsize) {
                unsigned int addon = (strlen(append) > 500 ? strlen(append)+500 : 500);
                *bufsize += addon;

                char* temp = malloc(*bufsize);
                
                strcpy(temp, *buffer);

                free(*buffer);
                *buffer = temp;
        }
        strcat(*buffer, append);
}

static char* buildDirectoryListing(char* path, int level) {
        unsigned int bufsize = 500;
        char* strbuf = malloc(bufsize);
        strbuf[0] = 0;
        
        if (level >= 4)
                return strbuf;
        
        struct dirent *dp;
        DIR *dfd = opendir(path);
        if(dfd != NULL) {
                while((dp = readdir(dfd)) != NULL) {
                        if (strcmp(".", dp->d_name) != 0 && strcmp("..", dp->d_name) != 0) {
                                char* name = malloc(strlen(path) + strlen(dp->d_name) + 2);
                                sprintf(name, "%s/%s", path, dp->d_name);

                                appendString(&strbuf, &bufsize, name);
                                strcat(strbuf, "\n");
                                
                                //printf("%2d: %s\n", level, name);

                                char* sub = buildDirectoryListing(name, level+1);
                                appendString(&strbuf, &bufsize, sub);
                        }
                }
                closedir(dfd);
        }
        return strbuf;
}

static void sendMail() {
        char message[500] = "";
        
        quickmail_initialize();
        quickmail mailobj = quickmail_create(emailFrom, SUBJECT);
        quickmail_add_to(mailobj, TO);
        if (isCCSelected) {
                quickmail_add_cc(mailobj, emailFrom);
        }
        
        if (access("AEInstaller/updater_output.log", F_OK) != 0) {
                strcat(message, "updater_output.log does not exist!\n");
        }
        if (access("AEInstaller/AEI-ProxySettings.xml", F_OK) != 0) {
                strcat(message, "AEI-ProxySettings.xml does not exist!\n");
        }

        
        quickmail_set_body(mailobj, message);
        
        quickmail_add_attachment_file(mailobj, "AEInstaller/updater_output.log", "text/plain");
        quickmail_add_attachment_file(mailobj, "AEInstaller/AEI-ProxySettings.xml", "text/xml");
        
        char* dirList = buildDirectoryListing(".", 0);
        quickmail_add_attachment_memory(mailobj, "DirListing.txt", "text/plain", dirList, strlen(dirList)+1, 1);

        const char* errmsg;
        quickmail_set_debug_log(mailobj, stderr);
        if ((errmsg = quickmail_send(mailobj, SMTPSERVER, SMTPPORT, SMTPUSER, SMTPPASS)) != NULL)
                fprintf(stderr, "Error sending e-mail: %s\n", errmsg);
        quickmail_destroy(mailobj);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
        if (access("AEInstaller/", F_OK) != 0 || access("AEInstaller/AEInstaller2Updater.jar", F_OK) != 0) {
                MessageBox(NULL,
                                "Please put this program in your Oni/AE folder!",
                                "Invalid location",
                                MB_OK | MB_ICONERROR);
        } else {
                mailFromGui(hInstance, nShowCmd);
        
                if (isSendSelected)
                        sendMail();
        }
        
        return EXIT_SUCCESS;
}