diff -uNr tg/main.c tg.mod/main.c
--- tg/main.c	2019-01-29 01:55:41.993325780 +0200
+++ tg.mod/main.c	2019-01-29 01:56:19.063485172 +0200
@@ -53,9 +53,6 @@
 #include <time.h>
 #include <fcntl.h>
 
-#ifdef HAVE_EXECINFO_H
-#include <execinfo.h>
-#endif
 #include <signal.h>
 #ifdef HAVE_LIBCONFIG
 #include <libconfig.h>
@@ -170,21 +167,13 @@
   static char *home_directory = NULL;
   home_directory = getenv("TELEGRAM_HOME");
   if (!str_empty (home_directory)) { return tstrdup (home_directory); }
+
   home_directory = getenv("HOME");
-  if (!str_empty (home_directory)) { return tstrdup (home_directory); }
-  struct passwd *current_passwd;
-  uid_t user_id;
-  setpwent ();
-  user_id = getuid ();
-  while ((current_passwd = getpwent ())) {
-    if (current_passwd->pw_uid == user_id) {
-      home_directory = tstrdup (current_passwd->pw_dir);
-      break;
-    }
+  if (!str_empty (home_directory)) {
+    return tstrdup (home_directory);
+  } else {
+    return tstrdup ("@TERMUX_HOME@");
   }
-  endpwent ();
-  if (str_empty (home_directory)) { home_directory = tstrdup ("."); }
-  return home_directory;
 }
 
 char *get_config_directory (void) {
@@ -542,48 +531,6 @@
 int accept_any_tcp;
 
 int change_user_group () {
-  char *username = set_user_name;
-  char *groupname = set_group_name;
-  struct passwd *pw;
-  /* lose root privileges if we have them */
-  if (getuid() == 0 || geteuid() == 0) {
-    if (username == 0 || *username == '\0') {
-      username = "telegramd";
-    }
-    if ((pw = getpwnam (username)) == 0) {
-      fprintf (stderr, "change_user_group: can't find the user %s to switch to\n", username);
-      return -1;
-    }
-    gid_t gid = pw->pw_gid;
-    if (setgroups (1, &gid) < 0) {
-      fprintf (stderr, "change_user_group: failed to clear supplementary groups list: %m\n");
-      return -1;
-    }
-
-    if (groupname) {
-      struct group *g = getgrnam (groupname);
-      if (g == NULL) {
-        fprintf (stderr, "change_user_group: can't find the group %s to switch to\n", groupname);
-        return -1;
-      }
-      gid = g->gr_gid;
-    }
-
-    if (setgid (gid) < 0) {
-      fprintf (stderr, "change_user_group: setgid (%d) failed. %m\n", (int) gid);
-      return -1;
-    }
-
-    if (setuid (pw->pw_uid) < 0) {
-      fprintf (stderr, "change_user_group: failed to assume identity of user %s\n", username);
-      return -1;
-    } else {
-      pw = getpwuid(getuid());
-      setenv("USER", pw->pw_name, 1);
-      setenv("HOME", pw->pw_dir, 1);
-      setenv("SHELL", pw->pw_shell, 1);
-    }
-  }
   return 0;
 }
 
@@ -753,19 +700,11 @@
   }
 }
 
-#ifdef HAVE_EXECINFO_H
-void print_backtrace (void) {
-  void *buffer[255];
-  const int calls = backtrace (buffer, sizeof (buffer) / sizeof (void *));
-  backtrace_symbols_fd (buffer, calls, 1);
-}
-#else
 void print_backtrace (void) {
   if (write (1, "No libexec. Backtrace disabled\n", 32) < 0) {
     // Sad thing
   }
 }
-#endif
 
 int sfd;
 int usfd;
@@ -930,7 +869,7 @@
   #ifdef __FreeBSD__
   tgl_set_rsa_key (TLS, "/usr/local/etc/" PROG_NAME "/server.pub");
   #else
-  tgl_set_rsa_key (TLS, "/etc/" PROG_NAME "/server.pub");
+  tgl_set_rsa_key (TLS, "@TERMUX_PREFIX@/etc/" PROG_NAME "/server.pub");
   #endif
   tgl_set_rsa_key (TLS, "tg-server.pub");