mirror of
https://github.com/shadowsocks/shadowsocks-libev.git
synced 2026-10-23 08:03:54 +00:00
137 lines
3.5 KiB
C
137 lines
3.5 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <time.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include "utils.h"
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#define INT_DIGITS 19 /* enough for 64 bit integer */
|
|
|
|
void ERROR(const char *s) {
|
|
char *msg = strerror(errno);
|
|
LOGE("%s: %s", s, msg);
|
|
|
|
}
|
|
|
|
char *itoa(int i) {
|
|
/* Room for INT_DIGITS digits, - and '\0' */
|
|
static char buf[INT_DIGITS + 2];
|
|
char *p = buf + INT_DIGITS + 1; /* points to terminating '\0' */
|
|
if (i >= 0) {
|
|
do {
|
|
*--p = '0' + (i % 10);
|
|
i /= 10;
|
|
} while (i != 0);
|
|
return p;
|
|
}
|
|
else { /* i < 0 */
|
|
do {
|
|
*--p = '0' - (i % 10);
|
|
i /= 10;
|
|
} while (i != 0);
|
|
*--p = '-';
|
|
}
|
|
return p;
|
|
}
|
|
|
|
char *ss_strndup(const char *s, size_t n) {
|
|
size_t len = strlen(s);
|
|
char *ret;
|
|
|
|
if (len <= n) return strdup(s);
|
|
|
|
ret = malloc(n + 1);
|
|
strncpy(ret, s, n);
|
|
ret[n] = '\0';
|
|
return ret;
|
|
}
|
|
|
|
void FATAL(const char *msg) {
|
|
LOGE("%s", msg);
|
|
exit(-1);
|
|
}
|
|
|
|
void usage() {
|
|
printf("\n");
|
|
printf("shadowsocks-libev %s\n\n", VERSION);
|
|
printf(" maintained by Max Lv <max.c.lv@gmail.com>\n\n");
|
|
printf(" usage:\n\n");
|
|
printf(" ss-[local|redir|server]\n");
|
|
printf(" -s <server_host> -p <server_port>\n");
|
|
printf(" -l <local_port> -k <password>\n");
|
|
printf(" [-m <encrypt_method>] [-f <pid_file>]\n");
|
|
printf(" [-t <timeout>] [-c <config_file>]\n");
|
|
printf(" [-i <interface>] [-b <local_address>]\n");
|
|
printf("\n");
|
|
printf(" options:\n\n");
|
|
printf(" encrypt_method: table, rc4,\n");
|
|
printf(" aes-128-cfb, aes-192-cfb, aes-256-cfb,\n");
|
|
printf(" bf-cfb, camellia-128-cfb, camellia-192-cfb,\n");
|
|
printf(" camellia-256-cfb, cast5-cfb, des-cfb,\n");
|
|
printf(" idea-cfb, rc2-cfb and seed-cfb\n");
|
|
printf(" pid_file: valid path to the pid file\n");
|
|
printf(" timeout: socket timeout in senconds\n");
|
|
printf(" config_file: json format config file\n");
|
|
printf(" interface: specific network interface to bind,\n");
|
|
printf(" only avaliable in local and server modes\n");
|
|
printf(" local_address: specific local address to bind,\n");
|
|
printf(" only avaliable in local and redir modes\n");
|
|
printf("\n");
|
|
}
|
|
|
|
void demonize(const char* path) {
|
|
|
|
/* Our process ID and Session ID */
|
|
pid_t pid, sid;
|
|
|
|
/* Fork off the parent process */
|
|
pid = fork();
|
|
if (pid < 0) {
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
/* If we got a good PID, then
|
|
we can exit the parent process. */
|
|
if (pid > 0) {
|
|
FILE *file = fopen(path, "w");
|
|
if (file == NULL) FATAL("Invalid pid file\n");
|
|
|
|
fprintf(file, "%d", pid);
|
|
fclose(file);
|
|
exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
/* Change the file mode mask */
|
|
umask(0);
|
|
|
|
/* Open any logs here */
|
|
|
|
/* Create a new SID for the child process */
|
|
sid = setsid();
|
|
if (sid < 0) {
|
|
/* Log the failure */
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
/* Change the current working directory */
|
|
if ((chdir("/")) < 0) {
|
|
/* Log the failure */
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
/* Close out the standard file descriptors */
|
|
close(STDIN_FILENO);
|
|
close(STDOUT_FILENO);
|
|
close(STDERR_FILENO);
|
|
}
|
|
|