release/src/router/httpd/dhcp.c

   1 /*
   2
   3         Tomato Firmware
   4         Copyright (C) 2006-2009 Jonathan Zarate
   5
   6 */
   7
   8 #include "tomato.h"
   9
  10 #include <sys/sysinfo.h>
  11 #include <sys/stat.h>
  12 #include <sys/types.h>
  13
  14
  15 void asp_dhcpc_time(int argc, char **argv)
  16 {
  17         long exp;
  18         struct sysinfo si;
  19         long n;
  20         int r;
  21         char buf[32];
  22
  23         if (using_dhcpc()) {
  24                 exp = 0;
  25                 r = f_read_string("/var/lib/misc/dhcpc.expires", buf, sizeof(buf));
  26                 if (r > 0) {
  27                         n = atol(buf);
  28                         if (n > 0) {
  29                                 sysinfo(&si);
  30                                 exp = n - si.uptime;
  31                         }
  32                 }
  33                 web_puts(reltime(buf, exp));
  34         }
  35 }
  36
  37 void wo_dhcpc(char *url)
  38 {
  39         char *p;
  40         char *argv[] = { NULL, NULL };
  41         int pid;
  42
  43         if ((p = webcgi_get("exec")) != NULL) {
  44                 if (strcmp(p, "release") == 0)
  45                         argv[0] = "dhcpc-release";
  46                 else if (strcmp(p, "renew") == 0)
  47                         argv[0] = "dhcpc-renew";
  48                 _eval(argv, NULL, 0, &pid);
  49         }
  50         common_redirect();
  51 }
  52
  53
  54 // -----------------------------------------------------------------------------
  55
  56
  57 void wo_dhcpd(char *url)
  58 {
  59         char *p;
  60
  61         if ((p = webcgi_get("remove")) != NULL) {
  62                 f_write_string("/var/tmp/dhcp/delete", p, FW_CREATE|FW_NEWLINE, 0666);
  63                 killall("dnsmasq", SIGUSR2);
  64                 f_wait_notexists("/var/tmp/dhcp/delete", 5);
  65         }
  66         web_puts("{}");
  67 }