release/src/router/rc/telssh.c

   1 /*
   2
   3         Tomato Firmware
   4         Copyright (C) 2006-2009 Jonathan Zarate
   5
   6 */
   7
   8 #include "rc.h"
   9
  10
  11 void create_passwd(void)
  12 {
  13         char s[512];
  14         char *p;
  15         char salt[32];
  16         FILE *f;
  17         mode_t m;
  18
  19         strcpy(salt, "$1$");
  20         f_read("/dev/urandom", s, 6);
  21         base64_encode(s, salt + 3, 6);
  22         salt[3 + 8] = 0;
  23         p = salt;
  24         while (*p) {
  25                 if (*p == '+') *p = '.';
  26                 ++p;
  27         }
  28         if (((p = nvram_get("http_passwd")) == NULL) || (*p == 0)) p = "admin";
  29
  30         m = umask(0777);
  31         if ((f = fopen("/etc/shadow", "w")) != NULL) {
  32                 p = crypt(p, salt);
  33                 fprintf(f, "root:%s:0:0:99999:7:0:0:\n"
  34                                    "nobody:*:0:0:99999:7:0:0:\n", p);
  35 #if TOMATO_SL
  36                 // todo         zzz
  37                 fprintf(f, "admin:*:0:0:99999:7:0:0:\n");
  38 #endif
  39                 fclose(f);
  40         }
  41         umask(m);
  42         chmod("/etc/shadow", 0600);
  43
  44         f_write_string("/etc/passwd",
  45                 "root:x:0:0:root:/root:/bin/sh\n"
  46 #if TOMATO_SL
  47                 // todo         zzz
  48                 "admin:x:100:100:nas:/dev/null:/dev/null\n"
  49 #endif
  50                 "nobody:x:65534:65534:nobody:/dev/null:/dev/null\n",
  51                 0, 0644);
  52
  53         f_write_string("/etc/gshadow",
  54                 "root:*:0:\n"
  55 #if TOMATO_SL
  56                 "nas:*:100:\n"
  57 #endif
  58                 "nobody:*:65534:\n",
  59                 0, 0600);
  60         f_write_string("/etc/group",
  61                 "root:x:0:\n"
  62 #if TOMATO_SL
  63                 "nas:x:100:\n"
  64 #endif
  65                 "nobody:x:65534:\n",
  66                 0, 0644);
  67 }
  68
  69 void start_sshd(void)
  70 {
  71         static const char *hkfn = "/etc/dropbear/dropbear_rsa_host_key";
  72
  73         mkdir("/etc/dropbear", 0700);
  74         mkdir("/root/.ssh", 0700);
  75
  76         f_write_string("/root/.ssh/authorized_keys", nvram_safe_get("sshd_authkeys"), 0, 0700);
  77
  78         unlink(hkfn);
  79
  80         if (!nvram_get_file("sshd_hostkey", hkfn, 2048)) {
  81                 eval("dropbearkey", "-t", "rsa", "-f", (char *)hkfn);
  82                 if (nvram_set_file("sshd_hostkey", hkfn, 2048)) {
  83                         nvram_commit_x();
  84                 }
  85         }
  86
  87         char *argv[8];
  88         int argc;
  89         char *p;
  90
  91         argv[0] = "dropbear";
  92         argv[1] = "-p";
  93         argv[2] = nvram_safe_get("sshd_port");
  94         argc = 3;
  95
  96         if (!nvram_get_int("sshd_pass")) argv[argc++] = "-s";
  97
  98         if (((p = nvram_get("sshd_rwb")) != NULL) && (*p)) {
  99                 argv[argc++] = "-W";
 100                 argv[argc++] = p;
 101         }
 102
 103         argv[argc] = NULL;
 104         _eval(argv, NULL, 0, NULL);
 105 }
 106
 107 void stop_sshd(void)
 108 {
 109         killall("dropbear", SIGTERM);
 110 }
 111
 112 void start_telnetd(void)
 113 {
 114         xstart("telnetd", "-p", nvram_safe_get("telnetd_port"));
 115 }
 116
 117 void stop_telnetd(void)
 118 {
 119         killall("telnetd", SIGTERM);
 120 }