added daemonizing

init of libgcrypt

1 files changed, 89 insertions, 0 deletions

diff --git a/src/anylike.c b/src/anylike.c
index 0cd0138..1735631 100644
--- a/src/anylike.c
+++ b/src/anylike.c
@@ -25,6 +25,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <errno.h>
 
 #include <lua50/lua.h>
 
@@ -33,6 +34,40 @@
 #include "log.h"
 #include "l_log.h"
 
+#ifndef USE_SSL_CRYPTO
+#include <gcrypt.h>
+#endif
+
+#include "daemon.h"
+
+#ifndef USE_SSL_CRYPTO
+
+#define MIN_GCRYPT_VERSION "1.2.0"
+
+int init_libgcrypt()
+{
+  if(!gcry_check_version(MIN_GCRYPT_VERSION)) {
+    log_printf(NOTICE, "invalid Version of libgcrypt, should be >= %s", MIN_GCRYPT_VERSION);
+    return -1;
+  }
+
+  gcry_error_t err = gcry_control(GCRYCTL_DISABLE_SECMEM, 0);
+  if(err) {
+    log_printf(ERROR, "failed to disable secure memory: %s", gcry_strerror(err));
+    return -1;
+  }
+
+  err = gcry_control(GCRYCTL_INITIALIZATION_FINISHED);
+  if(err) {
+    log_printf(ERROR, "failed to finish libgcrypt initialization: %s", gcry_strerror(err));
+    return -1;
+  }
+
+  log_printf(NOTICE, "libgcrypt init finished");
+  return 0;
+}
+#endif
+
 int main_loop(options_t* opt)
 {
 	lua_State *L;
@@ -101,6 +136,60 @@ int main(int argc, char* argv[])
   log_printf(NOTICE, "just started...");
   options_parse_post(&opt);
 
+
+
+
+  priv_info_t priv;
+  if(opt.username_)
+    if(priv_init(&priv, opt.username_, opt.groupname_)) {
+      options_clear(&opt);
+      log_close();
+      exit(-1);
+    }
+
+#ifndef USE_SSL_CRYPTO
+  ret = init_libgcrypt();
+  if(ret) {
+    log_printf(ERROR, "error on libgcrpyt initialization, exitting");
+    options_clear(&opt);
+    log_close();
+    exit(ret);
+  }
+#endif
+
+  FILE* pid_file = NULL;
+  if(opt.pid_file_) {
+    pid_file = fopen(opt.pid_file_, "w");
+    if(!pid_file) {
+      log_printf(WARNING, "unable to open pid file: %s", strerror(errno));
+    }
+  }
+
+  if(opt.chroot_dir_)
+    if(do_chroot(opt.chroot_dir_)) {
+      options_clear(&opt);
+      log_close();
+      exit(-1);
+    }
+  if(opt.username_)
+    if(priv_drop(&priv)) {
+      options_clear(&opt);
+      log_close();
+      exit(-1);
+    }  
+
+  if(opt.daemonize_) {
+    pid_t oldpid = getpid();
+    daemonize();
+    log_printf(INFO, "running in background now (old pid: %d)", oldpid);
+  }
+
+  if(pid_file) {
+    pid_t pid = getpid();
+    fprintf(pid_file, "%d", pid);
+    fclose(pid_file);
+  }
+
   ret = main_loop(&opt);
 
   options_clear(&opt);