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/* DHT boostrap
*
* A simple DHT boostrap server for tox (daemon edition)
*/
#include <sys/types.h> /* pid_t */
#include <sys/stat.h> /* umask */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h> /* POSIX things */
#include <errno.h>
#include "../core/DHT.h"
/* Sleep function (x = milliseconds) */
#ifdef WIN32
#define c_sleep(x) Sleep(1*x)
#else
#include <unistd.h>
#define c_sleep(x) usleep(1000*x)
#endif
#define PORT 33445
#define USERNAME getenv("USER")
#define PIDFILE "/home/%s/.bootstrap_server.pid" /* %s represents the unser's name */
int main(int argc, char *argv[]) {
char pidfloc[512]; /* Location of the soon-to-be PID file */
pid_t pid, sid; /* Process- and Session-ID */
FILE *pidf; /* The PID file */
/* Assemble PID file location an try to open the file */
sprintf(pidfloc, PIDFILE, USERNAME);
pidf = fopen(pidfloc, "w");
/* Generate new keypair */
new_keys();
/* Public key */
uint32_t i;
printf("\nPublic Key: ");
for(i = 0; i < 32; i++)
{
uint8_t ln, hn;
ln = 0x0F & self_public_key[i];
hn = 0xF0 & self_public_key[i];
hn = hn >> 4;
printf("%X%X", hn, ln);
}
printf("\n");
/* initialize networking
bind to ip 0.0.0.0:PORT */
IP ip;
ip.i = 0;
init_networking(ip, PORT);
/* If there's been an error, exit before forking off */
if (errno != 0) {
perror("Error");
printf("Error(s) occured during start-up. Exiting.\n");
exit(EXIT_FAILURE);
}
// /* Assemble the location of the PID file */
// sprintf(pidfloc, PIDFILE, USERNAME);
// pidf = fopen(pidfloc, "w");
// /* Check if we can actually open the file */
// if(pidf == NULL) {
// printf("Couldn't open PID-File %s for writing.\n", pidfloc);
// exit(EXIT_FAILURE);
// }
/* Fork off the parent process */
pid = fork();
if (pid < 0) {
printf("Forking failed.\n");
exit(EXIT_FAILURE);
}
/* If we got a good PID, then
we can exit the parent process. */
if (pid > 0) {
printf("Forked successfully: %d\n", pid);
/* Write the PID file */
fprintf(pidf, "%d\n", pid);
fclose(pidf);
/* Exit parent */
exit(EXIT_SUCCESS);
}
/* Change the file mode mask */
umask(0);
/* Create a new SID for the child process */
sid = setsid();
if (sid < 0) {
printf("SID creation failure.\n");
exit(EXIT_FAILURE);
}
/* Change the current working directory */
if ((chdir("/")) < 0) {
exit(EXIT_FAILURE);
}
/* Go quiet */
close(STDIN_FILENO);
close(STDOUT_FILENO);
close(STDERR_FILENO);
IP_Port ip_port;
uint8_t data[MAX_UDP_PACKET_SIZE];
uint32_t length;
/* Main loop */
while(1) {
doDHT();
while(receivepacket(&ip_port, data, &length) != -1) {
DHT_handlepacket(data, length, ip_port);
}
c_sleep(1);
}
shutdown_networking();
exit(EXIT_SUCCESS);
}
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