X-Git-Url: http://git.iain.cx/?a=blobdiff_plain;f=registry.cpp;h=1b85af588f55d160f29e40b31d145a9254836031;hb=62f28c55d444d846579159133dbe091809a2c08b;hp=15ee152a5483564a0678c052b406637409cdedc3;hpb=e9d9b2fa71473e96650fe3fc4ee0d5535c6725d8;p=nssm.git

diff --git a/registry.cpp b/registry.cpp
index 15ee152..1b85af5 100644
--- a/registry.cpp
+++ b/registry.cpp
@@ -1,11 +1,53 @@
 #include "nssm.h"
 
+extern const TCHAR *exit_action_strings[];
+
+static int service_registry_path(const TCHAR *service_name, bool parameters, const TCHAR *sub, TCHAR *buffer, unsigned long buflen) {
+  int ret;
+
+  if (parameters) {
+    if (sub) ret = _sntprintf_s(buffer, buflen, _TRUNCATE, NSSM_REGISTRY _T("\\") NSSM_REG_PARAMETERS _T("\\%s"), service_name, sub);
+    else ret = _sntprintf_s(buffer, buflen, _TRUNCATE, NSSM_REGISTRY _T("\\") NSSM_REG_PARAMETERS, service_name);
+  }
+  else ret = _sntprintf_s(buffer, buflen, _TRUNCATE, NSSM_REGISTRY, service_name);
+
+  return ret;
+}
+
+static long open_registry_key(const TCHAR *registry, REGSAM sam, HKEY *key, bool must_exist) {
+  long error;
+
+  if (sam & KEY_SET_VALUE) {
+    error = RegCreateKeyEx(HKEY_LOCAL_MACHINE, registry, 0, 0, REG_OPTION_NON_VOLATILE, sam, 0, key, 0);
+    if (error != ERROR_SUCCESS) {
+      *key = 0;
+      log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OPENKEY_FAILED, registry, error_string(GetLastError()), 0);
+      return error;
+    }
+  }
+  else {
+    error = RegOpenKeyEx(HKEY_LOCAL_MACHINE, registry, 0, sam, key);
+    if (error != ERROR_SUCCESS) {
+      *key = 0;
+      if (error != ERROR_FILE_NOT_FOUND || must_exist) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OPENKEY_FAILED, registry, error_string(GetLastError()), 0);
+    }
+  }
+
+  return error;
+}
+
+static HKEY open_registry_key(const TCHAR *registry, REGSAM sam, bool must_exist) {
+  HKEY key;
+  long error = open_registry_key(registry, sam, &key, must_exist);
+  return key;
+}
+
 int create_messages() {
   HKEY key;
 
-  char registry[KEY_LENGTH];
-  if (_snprintf(registry, sizeof(registry), "SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\%s", NSSM) < 0) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "eventlog registry", "create_messages()", 0);
+  TCHAR registry[KEY_LENGTH];
+  if (_sntprintf_s(registry, _countof(registry), _TRUNCATE, _T("SYSTEM\\CurrentControlSet\\Services\\EventLog\\Application\\%s"), NSSM) < 0) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("eventlog registry"), _T("create_messages()"), 0);
     return 1;
   }
 
@@ -15,63 +57,159 @@ int create_messages() {
   }
 
   /* Get path of this program */
-  char path[MAX_PATH];
-  GetModuleFileName(0, path, MAX_PATH);
+  const TCHAR *path = nssm_unquoted_imagepath();
 
   /* Try to register the module but don't worry so much on failure */
-  RegSetValueEx(key, "EventMessageFile", 0, REG_SZ, (const unsigned char *) path, strlen(path) + 1);
+  RegSetValueEx(key, _T("EventMessageFile"), 0, REG_SZ, (const unsigned char *) path, (unsigned long) (_tcslen(path) +  1) * sizeof(TCHAR));
   unsigned long types = EVENTLOG_INFORMATION_TYPE | EVENTLOG_WARNING_TYPE | EVENTLOG_ERROR_TYPE;
-  RegSetValueEx(key, "TypesSupported", 0, REG_DWORD, /*XXX*/(PBYTE) &types, sizeof(types));
+  RegSetValueEx(key, _T("TypesSupported"), 0, REG_DWORD, (const unsigned char *) &types, sizeof(types));
 
   return 0;
 }
 
-int create_parameters(char *service_name, char *exe, char *flags, char *dir) {
-  /* Get registry */
-  char registry[KEY_LENGTH];
-  if (_snprintf(registry, sizeof(registry), NSSM_REGISTRY, service_name) < 0) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "NSSM_REGISTRY", "create_parameters()", 0);
-    return 1;
-  }
+long enumerate_registry_values(HKEY key, unsigned long *index, TCHAR *name, unsigned long namelen) {
+  unsigned long type;
+  unsigned long datalen = namelen;
+  long error = RegEnumValue(key, *index, name, &datalen, 0, &type, 0, 0);
+  if (error == ERROR_SUCCESS) ++*index;
+  return error;
+}
 
+int create_parameters(nssm_service_t *service, bool editing) {
   /* Try to open the registry */
-  HKEY key;
-  if (RegCreateKeyEx(HKEY_LOCAL_MACHINE, registry, 0, 0, REG_OPTION_NON_VOLATILE, KEY_WRITE, 0, &key, 0) != ERROR_SUCCESS) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OPENKEY_FAILED, registry, error_string(GetLastError()), 0);
-    return 2;
-  }
+  HKEY key = open_registry(service->name, KEY_WRITE);
+  if (! key) return 1;
+
+  /* Remember parameters in case we need to delete them. */
+  TCHAR registry[KEY_LENGTH];
+  int ret = service_registry_path(service->name, true, 0, registry, _countof(registry));
 
   /* Try to create the parameters */
-  if (RegSetValueEx(key, NSSM_REG_EXE, 0, REG_EXPAND_SZ, (const unsigned char *) exe, strlen(exe) + 1) != ERROR_SUCCESS) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_SETVALUE_FAILED, NSSM_REG_EXE, error_string(GetLastError()), 0);
-    RegDeleteKey(HKEY_LOCAL_MACHINE, NSSM_REGISTRY);
+  if (set_expand_string(key, NSSM_REG_EXE, service->exe)) {
+    if (ret > 0) RegDeleteKey(HKEY_LOCAL_MACHINE, registry);
+    RegCloseKey(key);
+    return 2;
+  }
+  if (set_expand_string(key, NSSM_REG_FLAGS, service->flags)) {
+    if (ret > 0) RegDeleteKey(HKEY_LOCAL_MACHINE, registry);
     RegCloseKey(key);
     return 3;
   }
-  if (RegSetValueEx(key, NSSM_REG_FLAGS, 0, REG_EXPAND_SZ, (const unsigned char *) flags, strlen(flags) + 1) != ERROR_SUCCESS) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_SETVALUE_FAILED, NSSM_REG_FLAGS, error_string(GetLastError()), 0);
-    RegDeleteKey(HKEY_LOCAL_MACHINE, NSSM_REGISTRY);
+  if (set_expand_string(key, NSSM_REG_DIR, service->dir)) {
+    if (ret > 0) RegDeleteKey(HKEY_LOCAL_MACHINE, registry);
     RegCloseKey(key);
     return 4;
   }
-  if (RegSetValueEx(key, NSSM_REG_DIR, 0, REG_EXPAND_SZ, (const unsigned char *) dir, strlen(dir) + 1) != ERROR_SUCCESS) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_SETVALUE_FAILED, NSSM_REG_DIR, error_string(GetLastError()), 0);
-    RegDeleteKey(HKEY_LOCAL_MACHINE, NSSM_REGISTRY);
-    RegCloseKey(key);
-    return 5;
+
+  /* Other non-default parameters. May fail. */
+  if (service->priority != NORMAL_PRIORITY_CLASS) set_number(key, NSSM_REG_PRIORITY, service->priority);
+  else if (editing) RegDeleteValue(key, NSSM_REG_PRIORITY);
+  if (service->affinity) {
+    TCHAR *string;
+    if (! affinity_mask_to_string(service->affinity, &string)) {
+      if (RegSetValueEx(key, NSSM_REG_AFFINITY, 0, REG_SZ, (const unsigned char *) string, (unsigned long) (_tcslen(string) + 1) * sizeof(TCHAR)) != ERROR_SUCCESS) {
+        log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_SETVALUE_FAILED, NSSM_REG_AFFINITY, error_string(GetLastError()), 0);
+        HeapFree(GetProcessHeap(), 0, string);
+        return 5;
+      }
+    }
+    if (string) HeapFree(GetProcessHeap(), 0, string);
+  }
+  else if (editing) RegDeleteValue(key, NSSM_REG_AFFINITY);
+  unsigned long stop_method_skip = ~service->stop_method;
+  if (stop_method_skip) set_number(key, NSSM_REG_STOP_METHOD_SKIP, stop_method_skip);
+  else if (editing) RegDeleteValue(key, NSSM_REG_STOP_METHOD_SKIP);
+  if (service->default_exit_action < NSSM_NUM_EXIT_ACTIONS) create_exit_action(service->name, exit_action_strings[service->default_exit_action], editing);
+  if (service->restart_delay) set_number(key, NSSM_REG_RESTART_DELAY, service->restart_delay);
+  else if (editing) RegDeleteValue(key, NSSM_REG_RESTART_DELAY);
+  if (service->throttle_delay != NSSM_RESET_THROTTLE_RESTART) set_number(key, NSSM_REG_THROTTLE, service->throttle_delay);
+  else if (editing) RegDeleteValue(key, NSSM_REG_THROTTLE);
+  if (service->kill_console_delay != NSSM_KILL_CONSOLE_GRACE_PERIOD) set_number(key, NSSM_REG_KILL_CONSOLE_GRACE_PERIOD, service->kill_console_delay);
+  else if (editing) RegDeleteValue(key, NSSM_REG_KILL_CONSOLE_GRACE_PERIOD);
+  if (service->kill_window_delay != NSSM_KILL_WINDOW_GRACE_PERIOD) set_number(key, NSSM_REG_KILL_WINDOW_GRACE_PERIOD, service->kill_window_delay);
+  else if (editing) RegDeleteValue(key, NSSM_REG_KILL_WINDOW_GRACE_PERIOD);
+  if (service->kill_threads_delay != NSSM_KILL_THREADS_GRACE_PERIOD) set_number(key, NSSM_REG_KILL_THREADS_GRACE_PERIOD, service->kill_threads_delay);
+  else if (editing) RegDeleteValue(key, NSSM_REG_KILL_THREADS_GRACE_PERIOD);
+  if (! service->kill_process_tree) set_number(key, NSSM_REG_KILL_PROCESS_TREE, 0);
+  else if (editing) RegDeleteValue(key, NSSM_REG_KILL_PROCESS_TREE);
+  if (service->stdin_path[0] || editing) {
+    if (service->stdin_path[0]) set_expand_string(key, NSSM_REG_STDIN, service->stdin_path);
+    else if (editing) RegDeleteValue(key, NSSM_REG_STDIN);
+    if (service->stdin_sharing != NSSM_STDIN_SHARING) set_createfile_parameter(key, NSSM_REG_STDIN, NSSM_REG_STDIO_SHARING, service->stdin_sharing);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDIN, NSSM_REG_STDIO_SHARING);
+    if (service->stdin_disposition != NSSM_STDIN_DISPOSITION) set_createfile_parameter(key, NSSM_REG_STDIN, NSSM_REG_STDIO_DISPOSITION, service->stdin_disposition);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDIN, NSSM_REG_STDIO_DISPOSITION);
+    if (service->stdin_flags != NSSM_STDIN_FLAGS) set_createfile_parameter(key, NSSM_REG_STDIN, NSSM_REG_STDIO_FLAGS, service->stdin_flags);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDIN, NSSM_REG_STDIO_FLAGS);
+  }
+  if (service->stdout_path[0] || editing) {
+    if (service->stdout_path[0]) set_expand_string(key, NSSM_REG_STDOUT, service->stdout_path);
+    else if (editing) RegDeleteValue(key, NSSM_REG_STDOUT);
+    if (service->stdout_sharing != NSSM_STDOUT_SHARING) set_createfile_parameter(key, NSSM_REG_STDOUT, NSSM_REG_STDIO_SHARING, service->stdout_sharing);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDOUT, NSSM_REG_STDIO_SHARING);
+    if (service->stdout_disposition != NSSM_STDOUT_DISPOSITION) set_createfile_parameter(key, NSSM_REG_STDOUT, NSSM_REG_STDIO_DISPOSITION, service->stdout_disposition);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDOUT, NSSM_REG_STDIO_DISPOSITION);
+    if (service->stdout_flags != NSSM_STDOUT_FLAGS) set_createfile_parameter(key, NSSM_REG_STDOUT, NSSM_REG_STDIO_FLAGS, service->stdout_flags);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDOUT, NSSM_REG_STDIO_FLAGS);
+    if (service->stdout_copy_and_truncate) set_createfile_parameter(key, NSSM_REG_STDOUT, NSSM_REG_STDIO_COPY_AND_TRUNCATE, 1);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDOUT, NSSM_REG_STDIO_COPY_AND_TRUNCATE);
+  }
+  if (service->stderr_path[0] || editing) {
+    if (service->stderr_path[0]) set_expand_string(key, NSSM_REG_STDERR, service->stderr_path);
+    else if (editing) RegDeleteValue(key, NSSM_REG_STDERR);
+    if (service->stderr_sharing != NSSM_STDERR_SHARING) set_createfile_parameter(key, NSSM_REG_STDERR, NSSM_REG_STDIO_SHARING, service->stderr_sharing);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDERR, NSSM_REG_STDIO_SHARING);
+    if (service->stderr_disposition != NSSM_STDERR_DISPOSITION) set_createfile_parameter(key, NSSM_REG_STDERR, NSSM_REG_STDIO_DISPOSITION, service->stderr_disposition);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDERR, NSSM_REG_STDIO_DISPOSITION);
+    if (service->stderr_flags != NSSM_STDERR_FLAGS) set_createfile_parameter(key, NSSM_REG_STDERR, NSSM_REG_STDIO_FLAGS, service->stderr_flags);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDERR, NSSM_REG_STDIO_FLAGS);
+    if (service->stderr_copy_and_truncate) set_createfile_parameter(key, NSSM_REG_STDERR, NSSM_REG_STDIO_COPY_AND_TRUNCATE, 1);
+    else if (editing) delete_createfile_parameter(key, NSSM_REG_STDERR, NSSM_REG_STDIO_COPY_AND_TRUNCATE);
   }
+  if (service->timestamp_log) set_number(key, NSSM_REG_TIMESTAMP_LOG, 1);
+  else if (editing) RegDeleteValue(key, NSSM_REG_TIMESTAMP_LOG);
+  if (service->hook_share_output_handles) set_number(key, NSSM_REG_HOOK_SHARE_OUTPUT_HANDLES, 1);
+  else if (editing) RegDeleteValue(key, NSSM_REG_HOOK_SHARE_OUTPUT_HANDLES);
+  if (service->rotate_files) set_number(key, NSSM_REG_ROTATE, 1);
+  else if (editing) RegDeleteValue(key, NSSM_REG_ROTATE);
+  if (service->rotate_stdout_online) set_number(key, NSSM_REG_ROTATE_ONLINE, 1);
+  else if (editing) RegDeleteValue(key, NSSM_REG_ROTATE_ONLINE);
+  if (service->rotate_seconds) set_number(key, NSSM_REG_ROTATE_SECONDS, service->rotate_seconds);
+  else if (editing) RegDeleteValue(key, NSSM_REG_ROTATE_SECONDS);
+  if (service->rotate_bytes_low) set_number(key, NSSM_REG_ROTATE_BYTES_LOW, service->rotate_bytes_low);
+  else if (editing) RegDeleteValue(key, NSSM_REG_ROTATE_BYTES_LOW);
+  if (service->rotate_bytes_high) set_number(key, NSSM_REG_ROTATE_BYTES_HIGH, service->rotate_bytes_high);
+  else if (editing) RegDeleteValue(key, NSSM_REG_ROTATE_BYTES_HIGH);
+  if (service->rotate_delay != NSSM_ROTATE_DELAY) set_number(key, NSSM_REG_ROTATE_DELAY, service->rotate_delay);
+  else if (editing) RegDeleteValue(key, NSSM_REG_ROTATE_DELAY);
+  if (service->no_console) set_number(key, NSSM_REG_NO_CONSOLE, 1);
+  else if (editing) RegDeleteValue(key, NSSM_REG_NO_CONSOLE);
 
-  /* Close registry */
+  /* Environment */
+  if (service->env) {
+    if (RegSetValueEx(key, NSSM_REG_ENV, 0, REG_MULTI_SZ, (const unsigned char *) service->env, (unsigned long) service->envlen * sizeof(TCHAR)) != ERROR_SUCCESS) {
+      log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_SETVALUE_FAILED, NSSM_REG_ENV, error_string(GetLastError()), 0);
+    }
+  }
+  else if (editing) RegDeleteValue(key, NSSM_REG_ENV);
+  if (service->env_extra) {
+    if (RegSetValueEx(key, NSSM_REG_ENV_EXTRA, 0, REG_MULTI_SZ, (const unsigned char *) service->env_extra, (unsigned long) service->env_extralen * sizeof(TCHAR)) != ERROR_SUCCESS) {
+      log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_SETVALUE_FAILED, NSSM_REG_ENV_EXTRA, error_string(GetLastError()), 0);
+    }
+  }
+  else if (editing) RegDeleteValue(key, NSSM_REG_ENV_EXTRA);
+
+  /* Close registry. */
   RegCloseKey(key);
 
   return 0;
 }
 
-int create_exit_action(char *service_name, const char *action_string) {
+int create_exit_action(TCHAR *service_name, const TCHAR *action_string, bool editing) {
   /* Get registry */
-  char registry[KEY_LENGTH];
-  if (_snprintf(registry, sizeof(registry), NSSM_REGISTRY "\\%s", service_name, NSSM_REG_EXIT) < 0) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "NSSM_REG_EXIT", "create_exit_action()", 0);
+  TCHAR registry[KEY_LENGTH];
+  if (service_registry_path(service_name, true, NSSM_REG_EXIT, registry, _countof(registry)) < 0) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("NSSM_REG_EXIT"), _T("create_exit_action()"), 0);
     return 1;
   }
 
@@ -84,13 +222,13 @@ int create_exit_action(char *service_name, const char *action_string) {
   }
 
   /* Do nothing if the key already existed */
-  if (disposition == REG_OPENED_EXISTING_KEY) {
+  if (disposition == REG_OPENED_EXISTING_KEY && ! editing) {
     RegCloseKey(key);
     return 0;
   }
 
   /* Create the default value */
-  if (RegSetValueEx(key, 0, 0, REG_SZ, (const unsigned char *) action_string, strlen(action_string) + 1) != ERROR_SUCCESS) {
+  if (RegSetValueEx(key, 0, 0, REG_SZ, (const unsigned char *) action_string, (unsigned long) (_tcslen(action_string) + 1) * sizeof(TCHAR)) != ERROR_SUCCESS) {
     log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_SETVALUE_FAILED, NSSM_REG_EXIT, error_string(GetLastError()), 0);
     RegCloseKey(key);
     return 3;
@@ -102,27 +240,90 @@ int create_exit_action(char *service_name, const char *action_string) {
   return 0;
 }
 
-int expand_parameter(HKEY key, char *value, char *data, unsigned long datalen, bool sanitise) {
-  unsigned char *buffer = (unsigned char *) HeapAlloc(GetProcessHeap(), 0, datalen);
+int get_environment(TCHAR *service_name, HKEY key, TCHAR *value, TCHAR **env, unsigned long *envlen) {
+  unsigned long type = REG_MULTI_SZ;
+  unsigned long envsize;
+
+  *envlen = 0;
+
+  /* Dummy test to find buffer size */
+  unsigned long ret = RegQueryValueEx(key, value, 0, &type, NULL, &envsize);
+  if (ret != ERROR_SUCCESS) {
+    *env = 0;
+    /* The service probably doesn't have any environment configured */
+    if (ret == ERROR_FILE_NOT_FOUND) return 0;
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_QUERYVALUE_FAILED, value, error_string(ret), 0);
+    return 1;
+  }
+
+  if (type != REG_MULTI_SZ) {
+    log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_INVALID_ENVIRONMENT_STRING_TYPE, value, service_name, 0);
+    *env = 0;
+    return 2;
+  }
+
+  /* Minimum usable environment would be A= NULL NULL. */
+  if (envsize < 4 * sizeof(TCHAR)) {
+    *env = 0;
+    return 3;
+  }
+
+  /* Previously initialised? */
+  if (*env) HeapFree(GetProcessHeap(), 0, *env);
+
+  *env = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, envsize);
+  if (! *env) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, value, _T("get_environment()"), 0);
+    return 4;
+  }
+
+  /* Actually get the strings. */
+  ret = RegQueryValueEx(key, value, 0, &type, (unsigned char *) *env, &envsize);
+  if (ret != ERROR_SUCCESS) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_QUERYVALUE_FAILED, value, error_string(ret), 0);
+    HeapFree(GetProcessHeap(), 0, *env);
+    *env = 0;
+    return 5;
+  }
+
+  /* Value retrieved by RegQueryValueEx() is SIZE not COUNT. */
+  *envlen = (unsigned long) environment_length(*env);
+
+  return 0;
+}
+
+
+int get_string(HKEY key, TCHAR *value, TCHAR *data, unsigned long datalen, bool expand, bool sanitise, bool must_exist) {
+  TCHAR *buffer = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, datalen);
   if (! buffer) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, value, "expand_parameter()", 0);
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, value, _T("get_string()"), 0);
     return 1;
   }
 
+  ZeroMemory(data, datalen);
+
   unsigned long type = REG_EXPAND_SZ;
   unsigned long buflen = datalen;
 
-  unsigned long ret = RegQueryValueEx(key, value, 0, &type, buffer, &buflen);
+  unsigned long ret = RegQueryValueEx(key, value, 0, &type, (unsigned char *) buffer, &buflen);
   if (ret != ERROR_SUCCESS) {
-    if (ret != ERROR_FILE_NOT_FOUND) log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_QUERYVALUE_FAILED, value, error_string(GetLastError()), 0);
     HeapFree(GetProcessHeap(), 0, buffer);
+
+    if (ret == ERROR_FILE_NOT_FOUND) {
+      if (! must_exist) return 0;
+    }
+
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_QUERYVALUE_FAILED, value, error_string(ret), 0);
     return 2;
   }
 
   /* Paths aren't allowed to contain quotes. */
-  if (sanitise) PathUnquoteSpaces((LPSTR) buffer);
+  if (sanitise) PathUnquoteSpaces(buffer);
 
-  ZeroMemory(data, datalen);
+  /* Do we want to expand the string? */
+  if (! expand) {
+    if (type == REG_EXPAND_SZ) type = REG_SZ;
+  }
 
   /* Technically we shouldn't expand environment strings from REG_SZ values */
   if (type != REG_EXPAND_SZ) {
@@ -131,9 +332,9 @@ int expand_parameter(HKEY key, char *value, char *data, unsigned long datalen, b
     return 0;
   }
 
-  ret = ExpandEnvironmentStrings((char *) buffer, data, datalen);
+  ret = ExpandEnvironmentStrings((TCHAR *) buffer, data, datalen);
   if (! ret || ret > datalen) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_EXPANDENVIRONMENTSTRINGS_FAILED, value, buffer, error_string(GetLastError()), 0);
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_EXPANDENVIRONMENTSTRINGS_FAILED, buffer, error_string(GetLastError()), 0);
     HeapFree(GetProcessHeap(), 0, buffer);
     return 3;
   }
@@ -142,52 +343,578 @@ int expand_parameter(HKEY key, char *value, char *data, unsigned long datalen, b
   return 0;
 }
 
-int get_parameters(char *service_name, char *exe, int exelen, char *flags, int flagslen, char *dir, int dirlen) {
-  /* Get registry */
-  char registry[KEY_LENGTH];
-  if (_snprintf(registry, sizeof(registry), NSSM_REGISTRY, service_name) < 0) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "NSSM_REGISTRY", "get_parameters()", 0);
+int get_string(HKEY key, TCHAR *value, TCHAR *data, unsigned long datalen, bool sanitise) {
+  return get_string(key, value, data, datalen, false, sanitise, true);
+}
+
+int expand_parameter(HKEY key, TCHAR *value, TCHAR *data, unsigned long datalen, bool sanitise, bool must_exist) {
+  return get_string(key, value, data, datalen, true, sanitise, must_exist);
+}
+
+int expand_parameter(HKEY key, TCHAR *value, TCHAR *data, unsigned long datalen, bool sanitise) {
+  return expand_parameter(key, value, data, datalen, sanitise, true);
+}
+
+/*
+  Sets a string in the registry.
+  Returns: 0 if it was set.
+           1 on error.
+*/
+int set_string(HKEY key, TCHAR *value, TCHAR *string, bool expand) {
+  unsigned long type = expand ? REG_EXPAND_SZ : REG_SZ;
+  if (RegSetValueEx(key, value, 0, type, (const unsigned char *) string, (unsigned long) (_tcslen(string) + 1) * sizeof(TCHAR)) == ERROR_SUCCESS) return 0;
+  log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_SETVALUE_FAILED, value, error_string(GetLastError()), 0);
+  return 1;
+}
+
+int set_string(HKEY key, TCHAR *value, TCHAR *string) {
+  return set_string(key, value, string, false);
+}
+
+int set_expand_string(HKEY key, TCHAR *value, TCHAR *string) {
+  return set_string(key, value, string, true);
+}
+
+/*
+  Set an unsigned long in the registry.
+  Returns: 0 if it was set.
+           1 on error.
+*/
+int set_number(HKEY key, TCHAR *value, unsigned long number) {
+  if (RegSetValueEx(key, value, 0, REG_DWORD, (const unsigned char *) &number, sizeof(number)) == ERROR_SUCCESS) return 0;
+  log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_SETVALUE_FAILED, value, error_string(GetLastError()), 0);
+  return 1;
+}
+
+/*
+  Query an unsigned long from the registry.
+  Returns:  1 if a number was retrieved.
+            0 if none was found and must_exist is false.
+           -1 if none was found and must_exist is true.
+           -2 otherwise.
+*/
+int get_number(HKEY key, TCHAR *value, unsigned long *number, bool must_exist) {
+  unsigned long type = REG_DWORD;
+  unsigned long number_len = sizeof(unsigned long);
+
+  int ret = RegQueryValueEx(key, value, 0, &type, (unsigned char *) number, &number_len);
+  if (ret == ERROR_SUCCESS) return 1;
+
+  if (ret == ERROR_FILE_NOT_FOUND) {
+    if (! must_exist) return 0;
+  }
+
+  log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_QUERYVALUE_FAILED, value, error_string(ret), 0);
+  if (ret == ERROR_FILE_NOT_FOUND) return -1;
+
+  return -2;
+}
+
+int get_number(HKEY key, TCHAR *value, unsigned long *number) {
+  return get_number(key, value, number, true);
+}
+
+/* Replace NULL with CRLF. Leave NULL NULL as the end marker. */
+int format_double_null(TCHAR *dn, unsigned long dnlen, TCHAR **formatted, unsigned long *newlen) {
+  unsigned long i, j;
+  *newlen = dnlen;
+
+  if (! *newlen) {
+    *formatted = 0;
+    return 0;
+  }
+
+  for (i = 0; i < dnlen; i++) if (! dn[i] && dn[i + 1]) ++*newlen;
+
+  *formatted = (TCHAR *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, *newlen * sizeof(TCHAR));
+  if (! *formatted) {
+    *newlen = 0;
     return 1;
   }
 
-  /* Try to open the registry */
+  for (i = 0, j = 0; i < dnlen; i++) {
+    (*formatted)[j] = dn[i];
+    if (! dn[i]) {
+      if (dn[i + 1]) {
+        (*formatted)[j] = _T('\r');
+        (*formatted)[++j] = _T('\n');
+      }
+    }
+    j++;
+  }
+
+  return 0;
+}
+
+/* Strip CR and replace LF with NULL.  */
+int unformat_double_null(TCHAR *formatted, unsigned long formattedlen, TCHAR **dn, unsigned long *newlen) {
+  unsigned long i, j;
+  *newlen = 0;
+
+  /* Don't count trailing NULLs. */
+  for (i = 0; i < formattedlen; i++) {
+    if (! formatted[i]) {
+      formattedlen = i;
+      break;
+    }
+  }
+
+  if (! formattedlen) {
+    *dn = 0;
+    return 0;
+  }
+
+  for (i = 0; i < formattedlen; i++) if (formatted[i] != _T('\r')) ++*newlen;
+
+  /* Skip blank lines. */
+  for (i = 0; i < formattedlen; i++) {
+    if (formatted[i] == _T('\r') && formatted[i + 1] == _T('\n')) {
+      /* This is the last CRLF. */
+      if (i >= formattedlen - 2) break;
+
+      /*
+        Strip at the start of the block or if the next characters are
+        CRLF too.
+      */
+      if (! i || (formatted[i + 2] == _T('\r') && formatted[i + 3] == _T('\n'))) {
+        for (j = i + 2; j < formattedlen; j++) formatted[j - 2] = formatted[j];
+        formatted[formattedlen--] = _T('\0');
+        formatted[formattedlen--] = _T('\0');
+        i--;
+        --*newlen;
+      }
+    }
+  }
+
+  /* Must end with two NULLs. */
+  *newlen += 2;
+
+  *dn = (TCHAR *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, *newlen * sizeof(TCHAR));
+  if (! *dn) return 1;
+
+  for (i = 0, j = 0; i < formattedlen; i++) {
+    if (formatted[i] == _T('\r')) continue;
+    if (formatted[i] == _T('\n')) (*dn)[j] = _T('\0');
+    else (*dn)[j] = formatted[i];
+    j++;
+  }
+
+  return 0;
+}
+
+/* Copy a block. */
+int copy_double_null(TCHAR *dn, unsigned long dnlen, TCHAR **newdn) {
+  if (! newdn) return 1;
+
+  *newdn = 0;
+  if (! dn) return 0;
+
+  *newdn = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, dnlen * sizeof(TCHAR));
+  if (! *newdn) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("dn"), _T("copy_double_null()"), 0);
+    return 2;
+  }
+
+  memmove(*newdn, dn, dnlen * sizeof(TCHAR));
+  return 0;
+}
+
+/*
+  Create a new block with all the strings of the first block plus a new string.
+  The new string may be specified as <key> <delimiter> <value> and the keylen
+  gives the offset into the string to compare against existing entries.
+  If the key is already present its value will be overwritten in place.
+  If the key is blank or empty the new block will still be allocated and have
+  non-zero length.
+*/
+int append_to_double_null(TCHAR *dn, unsigned long dnlen, TCHAR **newdn, unsigned long *newlen, TCHAR *append, size_t keylen, bool case_sensitive) {
+  if (! append || ! append[0]) return copy_double_null(dn, dnlen, newdn);
+  size_t appendlen = _tcslen(append);
+  int (*fn)(const TCHAR *, const TCHAR *, size_t) = (case_sensitive) ? _tcsncmp : _tcsnicmp;
+
+  /* Identify the key, if any, or treat the whole string as the key. */
+  TCHAR *key = 0;
+  if (! keylen || keylen > appendlen) keylen = appendlen;
+  key = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, (keylen + 1) * sizeof(TCHAR));
+  if (! key) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("key"), _T("append_to_double_null()"), 0);
+    return 1;
+  }
+  memmove(key, append, keylen * sizeof(TCHAR));
+  key[keylen] = _T('\0');
+
+  /* Find the length of the block not including any existing key. */
+  size_t len = 0;
+  TCHAR *s;
+  for (s = dn; *s; s++) {
+    if (fn(s, key, keylen)) len += _tcslen(s) + 1;
+    for ( ; *s; s++);
+  }
+
+  /* Account for new entry. */
+  len += _tcslen(append) + 1;
+
+  /* Account for trailing NULL. */
+  len++;
+
+  /* Allocate a new block. */
+  *newdn = (TCHAR *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len * sizeof(TCHAR));
+  if (! *newdn) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("newdn"), _T("append_to_double_null()"), 0);
+    HeapFree(GetProcessHeap(), 0, key);
+    return 2;
+  }
+
+  /* Copy existing entries.*/
+  *newlen = (unsigned long) len;
+  TCHAR *t = *newdn;
+  TCHAR *u;
+  bool replaced = false;
+  for (s = dn; *s; s++) {
+    if (fn(s, key, keylen)) u = s;
+    else {
+      u = append;
+      replaced = true;
+    }
+    len = _tcslen(u) + 1;
+    memmove(t, u, len * sizeof(TCHAR));
+    t += len;
+    for ( ; *s; s++);
+  }
+
+  /* Add the entry if it wasn't already replaced.  The buffer was zeroed. */
+  if (! replaced) memmove(t, append, _tcslen(append) * sizeof(TCHAR));
+
+  HeapFree(GetProcessHeap(), 0, key);
+  return 0;
+}
+
+/*
+  Create a new block with all the string of the first block minus the given
+  string.
+  The keylen parameter gives the offset into the string to compare against
+  existing entries.  If a substring of existing value matches the string to
+  the given length it will be removed.
+  If the last entry is removed the new block will still be allocated and
+  have non-zero length.
+*/
+int remove_from_double_null(TCHAR *dn, unsigned long dnlen, TCHAR **newdn, unsigned long *newlen, TCHAR *remove, size_t keylen, bool case_sensitive) {
+  if (! remove || !remove[0]) return copy_double_null(dn, dnlen, newdn);
+  size_t removelen = _tcslen(remove);
+  int (*fn)(const TCHAR *, const TCHAR *, size_t) = (case_sensitive) ? _tcsncmp : _tcsnicmp;
+
+  /* Identify the key, if any, or treat the whole string as the key. */
+  TCHAR *key = 0;
+  if (! keylen || keylen > removelen) keylen = removelen;
+  key = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, (keylen + 1) * sizeof(TCHAR));
+  if (! key) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("key"), _T("remove_from_double_null()"), 0);
+    return 1;
+  }
+  memmove(key, remove, keylen * sizeof(TCHAR));
+  key[keylen] = _T('\0');
+
+  /* Find the length of the block not including any existing key. */
+  size_t len = 0;
+  TCHAR *s;
+  for (s = dn; *s; s++) {
+    if (fn(s, key, keylen)) len += _tcslen(s) + 1;
+    for ( ; *s; s++);
+  }
+
+  /* Account for trailing NULL. */
+  if (++len < 2) len = 2;
+
+  /* Allocate a new block. */
+  *newdn = (TCHAR *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, len * sizeof(TCHAR));
+  if (! *newdn) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("newdn"), _T("remove_from_double_null()"), 0);
+    HeapFree(GetProcessHeap(), 0, key);
+    return 2;
+  }
+
+  /* Copy existing entries.*/
+  *newlen = (unsigned long) len;
+  TCHAR *t = *newdn;
+  for (s = dn; *s; s++) {
+    if (fn(s, key, keylen)) {
+      len = _tcslen(s) + 1;
+      memmove(t, s, len * sizeof(TCHAR));
+      t += len;
+    }
+    for ( ; *s; s++);
+  }
+
+  HeapFree(GetProcessHeap(), 0, key);
+  return 0;
+}
+
+void override_milliseconds(TCHAR *service_name, HKEY key, TCHAR *value, unsigned long *buffer, unsigned long default_value, unsigned long event) {
+  unsigned long type = REG_DWORD;
+  unsigned long buflen = sizeof(unsigned long);
+  bool ok = false;
+  unsigned long ret = RegQueryValueEx(key, value, 0, &type, (unsigned char *) buffer, &buflen);
+  if (ret != ERROR_SUCCESS) {
+    if (ret != ERROR_FILE_NOT_FOUND) {
+      if (type != REG_DWORD) {
+        TCHAR milliseconds[16];
+        _sntprintf_s(milliseconds, _countof(milliseconds), _TRUNCATE, _T("%lu"), default_value);
+        log_event(EVENTLOG_WARNING_TYPE, event, service_name, value, milliseconds, 0);
+      }
+      else log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_QUERYVALUE_FAILED, value, error_string(ret), 0);
+    }
+  }
+  else ok = true;
+
+  if (! ok) *buffer = default_value;
+}
+
+/* Open the key of the service itself Services\<service_name>. */
+HKEY open_service_registry(const TCHAR *service_name, REGSAM sam, bool must_exist) {
+  /* Get registry */
+  TCHAR registry[KEY_LENGTH];
+  if (service_registry_path(service_name, false, 0, registry, _countof(registry)) < 0) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, NSSM_REGISTRY, _T("open_service_registry()"), 0);
+    return 0;
+  }
+
+  return open_registry_key(registry, sam, must_exist);
+}
+
+/* Open a subkey of the service Services\<service_name>\<sub>. */
+long open_registry(const TCHAR *service_name, const TCHAR *sub, REGSAM sam, HKEY *key, bool must_exist) {
+  /* Get registry */
+  TCHAR registry[KEY_LENGTH];
+  if (service_registry_path(service_name, true, sub, registry, _countof(registry)) < 0) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, NSSM_REGISTRY, _T("open_registry()"), 0);
+    return 0;
+  }
+
+  return open_registry_key(registry, sam, key, must_exist);
+}
+
+HKEY open_registry(const TCHAR *service_name, const TCHAR *sub, REGSAM sam, bool must_exist) {
   HKEY key;
-  if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, registry, 0, KEY_READ, &key) != ERROR_SUCCESS) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OPENKEY_FAILED, registry, error_string(GetLastError()), 0);
+  long error = open_registry(service_name, sub, sam, &key, must_exist);
+  return key;
+}
+
+HKEY open_registry(const TCHAR *service_name, const TCHAR *sub, REGSAM sam) {
+  return open_registry(service_name, sub, sam, true);
+}
+
+HKEY open_registry(const TCHAR *service_name, REGSAM sam) {
+  return open_registry(service_name, 0, sam, true);
+}
+
+int get_io_parameters(nssm_service_t *service, HKEY key) {
+  /* stdin */
+  if (get_createfile_parameters(key, NSSM_REG_STDIN, service->stdin_path, &service->stdin_sharing, NSSM_STDIN_SHARING, &service->stdin_disposition, NSSM_STDIN_DISPOSITION, &service->stdin_flags, NSSM_STDIN_FLAGS, 0)) {
+    service->stdin_sharing = service->stdin_disposition = service->stdin_flags = 0;
+    ZeroMemory(service->stdin_path, _countof(service->stdin_path) * sizeof(TCHAR));
+    return 1;
+  }
+
+  /* stdout */
+  if (get_createfile_parameters(key, NSSM_REG_STDOUT, service->stdout_path, &service->stdout_sharing, NSSM_STDOUT_SHARING, &service->stdout_disposition, NSSM_STDOUT_DISPOSITION, &service->stdout_flags, NSSM_STDOUT_FLAGS, &service->stdout_copy_and_truncate)) {
+    service->stdout_sharing = service->stdout_disposition = service->stdout_flags = 0;
+    ZeroMemory(service->stdout_path, _countof(service->stdout_path) * sizeof(TCHAR));
     return 2;
   }
 
+  /* stderr */
+  if (get_createfile_parameters(key, NSSM_REG_STDERR, service->stderr_path, &service->stderr_sharing, NSSM_STDERR_SHARING, &service->stderr_disposition, NSSM_STDERR_DISPOSITION, &service->stderr_flags, NSSM_STDERR_FLAGS, &service->stderr_copy_and_truncate)) {
+    service->stderr_sharing = service->stderr_disposition = service->stderr_flags = 0;
+    ZeroMemory(service->stderr_path, _countof(service->stderr_path) * sizeof(TCHAR));
+    return 3;
+  }
+
+  return 0;
+}
+
+int get_parameters(nssm_service_t *service, STARTUPINFO *si) {
+  unsigned long ret;
+
+  /* Try to open the registry */
+  HKEY key = open_registry(service->name, KEY_READ);
+  if (! key) return 1;
+
+  /* Don't expand parameters when retrieving for the GUI. */
+  bool expand = si ? true : false;
+
+  /* Try to get environment variables - may fail */
+  get_environment(service->name, key, NSSM_REG_ENV, &service->env, &service->envlen);
+  /* Environment variables to add to existing rather than replace - may fail. */
+  get_environment(service->name, key, NSSM_REG_ENV_EXTRA, &service->env_extra, &service->env_extralen);
+
+  /* Set environment if we are starting the service. */
+  if (si) set_service_environment(service);
+
   /* Try to get executable file - MUST succeed */
-  if (expand_parameter(key, NSSM_REG_EXE, exe, exelen, false)) {
+  if (get_string(key, NSSM_REG_EXE, service->exe, sizeof(service->exe), expand, false, true)) {
     RegCloseKey(key);
     return 3;
   }
 
   /* Try to get flags - may fail and we don't care */
-  if (expand_parameter(key, NSSM_REG_FLAGS, flags, flagslen, false)) {
-    log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_NO_FLAGS, NSSM_REG_FLAGS, service_name, exe, 0);
-    ZeroMemory(flags, flagslen);
+  if (get_string(key, NSSM_REG_FLAGS, service->flags, sizeof(service->flags), expand, false, true)) {
+    log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_NO_FLAGS, NSSM_REG_FLAGS, service->name, service->exe, 0);
+    ZeroMemory(service->flags, sizeof(service->flags));
   }
 
   /* Try to get startup directory - may fail and we fall back to a default */
-  if (expand_parameter(key, NSSM_REG_DIR, dir, dirlen, true) || ! dir[0]) {
-    /* Our buffers are defined to be long enough for this to be safe */
-    size_t i;
-    for (i = strlen(exe); i && exe[i] != '\\' && exe[i] != '/'; i--);
-    if (i) {
-      memmove(dir, exe, i);
-      dir[i] = '\0';
-    }
-    else {
+  if (get_string(key, NSSM_REG_DIR, service->dir, sizeof(service->dir), expand, true, true) || ! service->dir[0]) {
+    _sntprintf_s(service->dir, _countof(service->dir), _TRUNCATE, _T("%s"), service->exe);
+    strip_basename(service->dir);
+    if (service->dir[0] == _T('\0')) {
       /* Help! */
-      unsigned long ret = GetWindowsDirectory(dir, dirlen);
-      if (! ret || ret > dirlen) {
-        log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_NO_DIR_AND_NO_FALLBACK, NSSM_REG_DIR, service_name, 0);
+      ret = GetWindowsDirectory(service->dir, sizeof(service->dir));
+      if (! ret || ret > sizeof(service->dir)) {
+        log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_NO_DIR_AND_NO_FALLBACK, NSSM_REG_DIR, service->name, 0);
         RegCloseKey(key);
         return 4;
       }
     }
-    log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_NO_DIR, NSSM_REG_DIR, service_name, dir, 0);
+    log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_NO_DIR, NSSM_REG_DIR, service->name, service->dir, 0);
+  }
+
+  /* Try to get processor affinity - may fail. */
+  TCHAR buffer[512];
+  if (get_string(key, NSSM_REG_AFFINITY, buffer, sizeof(buffer), false, false, false) || ! buffer[0]) service->affinity = 0LL;
+  else if (affinity_string_to_mask(buffer, &service->affinity)) {
+    log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_BOGUS_AFFINITY_MASK, service->name, buffer);
+    service->affinity = 0LL;
+  }
+  else {
+    DWORD_PTR affinity, system_affinity;
+
+    if (GetProcessAffinityMask(GetCurrentProcess(), &affinity, &system_affinity)) {
+      _int64 effective_affinity = service->affinity & system_affinity;
+      if (effective_affinity != service->affinity) {
+        TCHAR *system = 0;
+        if (! affinity_mask_to_string(system_affinity, &system)) {
+          TCHAR *effective = 0;
+          if (! affinity_mask_to_string(effective_affinity, &effective)) {
+            log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_EFFECTIVE_AFFINITY_MASK, service->name, buffer, system, effective, 0);
+          }
+          HeapFree(GetProcessHeap(), 0, effective);
+        }
+        HeapFree(GetProcessHeap(), 0, system);
+      }
+    }
+  }
+
+  /* Try to get priority - may fail. */
+  unsigned long priority;
+  if (get_number(key, NSSM_REG_PRIORITY, &priority, false) == 1) {
+    if (priority == (priority & priority_mask())) service->priority = priority;
+    else log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_BOGUS_PRIORITY, service->name, NSSM_REG_PRIORITY, 0);
+  }
+
+  /* Try to get hook I/O sharing - may fail. */
+  unsigned long hook_share_output_handles;
+  if (get_number(key, NSSM_REG_HOOK_SHARE_OUTPUT_HANDLES, &hook_share_output_handles, false) == 1) {
+    if (hook_share_output_handles) service->hook_share_output_handles = true;
+    else service->hook_share_output_handles = false;
+  }
+  else hook_share_output_handles = false;
+  /* Try to get file rotation settings - may fail. */
+  unsigned long rotate_files;
+  if (get_number(key, NSSM_REG_ROTATE, &rotate_files, false) == 1) {
+    if (rotate_files) service->rotate_files = true;
+    else service->rotate_files = false;
+  }
+  else service->rotate_files = false;
+  if (get_number(key, NSSM_REG_ROTATE_ONLINE, &rotate_files, false) == 1) {
+    if (rotate_files) service->rotate_stdout_online = service->rotate_stderr_online = true;
+    else service->rotate_stdout_online = service->rotate_stderr_online = false;
+  }
+  else service->rotate_stdout_online = service->rotate_stderr_online = false;
+  /* Log timestamping requires a logging thread.*/
+  unsigned long timestamp_log;
+  if (get_number(key, NSSM_REG_TIMESTAMP_LOG, &timestamp_log, false) == 1) {
+    if (timestamp_log) service->timestamp_log = true;
+    else service->timestamp_log = false;
+  }
+  else service->timestamp_log = false;
+
+  /* Hook I/O sharing and online rotation need a pipe. */
+  service->use_stdout_pipe = service->rotate_stdout_online || service->timestamp_log || hook_share_output_handles;
+  service->use_stderr_pipe = service->rotate_stderr_online || service->timestamp_log || hook_share_output_handles;
+  if (get_number(key, NSSM_REG_ROTATE_SECONDS, &service->rotate_seconds, false) != 1) service->rotate_seconds = 0;
+  if (get_number(key, NSSM_REG_ROTATE_BYTES_LOW, &service->rotate_bytes_low, false) != 1) service->rotate_bytes_low = 0;
+  if (get_number(key, NSSM_REG_ROTATE_BYTES_HIGH, &service->rotate_bytes_high, false) != 1) service->rotate_bytes_high = 0;
+  override_milliseconds(service->name, key, NSSM_REG_ROTATE_DELAY, &service->rotate_delay, NSSM_ROTATE_DELAY, NSSM_EVENT_BOGUS_THROTTLE);
+
+  /* Try to get force new console setting - may fail. */
+  if (get_number(key, NSSM_REG_NO_CONSOLE, &service->no_console, false) != 1) service->no_console = 0;
+
+  /* Change to startup directory in case stdout/stderr are relative paths. */
+  TCHAR cwd[PATH_LENGTH];
+  GetCurrentDirectory(_countof(cwd), cwd);
+  SetCurrentDirectory(service->dir);
+
+  /* Try to get stdout and stderr */
+  if (get_io_parameters(service, key)) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_GET_OUTPUT_HANDLES_FAILED, service->name, 0);
+    RegCloseKey(key);
+    SetCurrentDirectory(cwd);
+    return 5;
+  }
+
+  /* Change back in case the startup directory needs to be deleted. */
+  SetCurrentDirectory(cwd);
+
+  /* Try to get mandatory restart delay */
+  override_milliseconds(service->name, key, NSSM_REG_RESTART_DELAY, &service->restart_delay, 0, NSSM_EVENT_BOGUS_RESTART_DELAY);
+
+  /* Try to get throttle restart delay */
+  override_milliseconds(service->name, key, NSSM_REG_THROTTLE, &service->throttle_delay, NSSM_RESET_THROTTLE_RESTART, NSSM_EVENT_BOGUS_THROTTLE);
+
+  /* Try to get service stop flags. */
+  unsigned long type = REG_DWORD;
+  unsigned long stop_method_skip;
+  unsigned long buflen = sizeof(stop_method_skip);
+  bool stop_ok = false;
+  ret = RegQueryValueEx(key, NSSM_REG_STOP_METHOD_SKIP, 0, &type, (unsigned char *) &stop_method_skip, &buflen);
+  if (ret != ERROR_SUCCESS) {
+    if (ret != ERROR_FILE_NOT_FOUND) {
+      if (type != REG_DWORD) {
+        log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_BOGUS_STOP_METHOD_SKIP, service->name, NSSM_REG_STOP_METHOD_SKIP, NSSM, 0);
+      }
+      else log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_QUERYVALUE_FAILED, NSSM_REG_STOP_METHOD_SKIP, error_string(ret), 0);
+    }
+  }
+  else stop_ok = true;
+
+  /* Try all methods except those requested to be skipped. */
+  service->stop_method = ~0;
+  if (stop_ok) service->stop_method &= ~stop_method_skip;
+
+  /* Try to get kill delays - may fail. */
+  override_milliseconds(service->name, key, NSSM_REG_KILL_CONSOLE_GRACE_PERIOD, &service->kill_console_delay, NSSM_KILL_CONSOLE_GRACE_PERIOD, NSSM_EVENT_BOGUS_KILL_CONSOLE_GRACE_PERIOD);
+  override_milliseconds(service->name, key, NSSM_REG_KILL_WINDOW_GRACE_PERIOD, &service->kill_window_delay, NSSM_KILL_WINDOW_GRACE_PERIOD, NSSM_EVENT_BOGUS_KILL_WINDOW_GRACE_PERIOD);
+  override_milliseconds(service->name, key, NSSM_REG_KILL_THREADS_GRACE_PERIOD, &service->kill_threads_delay, NSSM_KILL_THREADS_GRACE_PERIOD, NSSM_EVENT_BOGUS_KILL_THREADS_GRACE_PERIOD);
+
+  /* Try to get process tree settings - may fail. */
+  unsigned long kill_process_tree;
+  if (get_number(key, NSSM_REG_KILL_PROCESS_TREE, &kill_process_tree, false) == 1) {
+    if (kill_process_tree) service->kill_process_tree = true;
+    else service->kill_process_tree = false;
+  }
+  else service->kill_process_tree = true;
+
+  /* Try to get default exit action. */
+  bool default_action;
+  service->default_exit_action = NSSM_EXIT_RESTART;
+  TCHAR action_string[ACTION_LEN];
+  if (! get_exit_action(service->name, 0, action_string, &default_action)) {
+    for (int i = 0; exit_action_strings[i]; i++) {
+      if (! _tcsnicmp((const TCHAR *) action_string, exit_action_strings[i], ACTION_LEN)) {
+        service->default_exit_action = i;
+        break;
+      }
+    }
   }
 
   /* Close registry */
@@ -196,35 +923,39 @@ int get_parameters(char *service_name, char *exe, int exelen, char *flags, int f
   return 0;
 }
 
-int get_exit_action(char *service_name, unsigned long *ret, unsigned char *action, bool *default_action) {
+/*
+  Sets the string for the exit action corresponding to the exit code.
+
+  ret is a pointer to an unsigned long containing the exit code.
+  If ret is NULL, we retrieve the default exit action unconditionally.
+
+  action is a buffer which receives the string.
+
+  default_action is a pointer to a bool which is set to false if there
+  was an explicit string for the given exit code, or true if we are
+  returning the default action.
+
+  Returns: 0 on success.
+           1 on error.
+*/
+int get_exit_action(const TCHAR *service_name, unsigned long *ret, TCHAR *action, bool *default_action) {
   /* Are we returning the default action or a status-specific one? */
   *default_action = ! ret;
 
-  /* Get registry */
-  char registry[KEY_LENGTH];
-  if (_snprintf(registry, sizeof(registry), NSSM_REGISTRY "\\%s", service_name, NSSM_REG_EXIT) < 0) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, "NSSM_REG_EXIT", "get_exit_action()", 0);
-    return 1;
-  }
-
   /* Try to open the registry */
-  HKEY key;
-  long error = RegOpenKeyEx(HKEY_LOCAL_MACHINE, registry, 0, KEY_READ, &key);
-  if (error != ERROR_SUCCESS && error != ERROR_FILE_NOT_FOUND) {
-    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OPENKEY_FAILED, registry, error_string(GetLastError()), 0);
-    return 2;
-  }
+  HKEY key = open_registry(service_name, NSSM_REG_EXIT, KEY_READ);
+  if (! key) return 1;
 
   unsigned long type = REG_SZ;
   unsigned long action_len = ACTION_LEN;
 
-  char code[64];
-  if (! ret) code[0] = '\0';
-  else if (_snprintf(code, sizeof(code), "%lu", *ret) < 0) {
+  TCHAR code[16];
+  if (! ret) code[0] = _T('\0');
+  else if (_sntprintf_s(code, _countof(code), _TRUNCATE, _T("%lu"), *ret) < 0) {
     RegCloseKey(key);
     return get_exit_action(service_name, 0, action, default_action);
   }
-  if (RegQueryValueEx(key, code, 0, &type, action, &action_len) != ERROR_SUCCESS) {
+  if (RegQueryValueEx(key, code, 0, &type, (unsigned char *) action, &action_len) != ERROR_SUCCESS) {
     RegCloseKey(key);
     /* Try again with * as the key if an exit code was defined */
     if (ret) return get_exit_action(service_name, 0, action, default_action);
@@ -236,3 +967,64 @@ int get_exit_action(char *service_name, unsigned long *ret, unsigned char *actio
 
   return 0;
 }
+
+int set_hook(const TCHAR *service_name, const TCHAR *hook_event, const TCHAR *hook_action, TCHAR *cmd) {
+  /* Try to open the registry */
+  TCHAR registry[KEY_LENGTH];
+  if (_sntprintf_s(registry, _countof(registry), _TRUNCATE, _T("%s\\%s"), NSSM_REG_HOOK, hook_event) < 0) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("hook registry"), _T("set_hook()"), 0);
+    return 1;
+  }
+
+  HKEY key;
+  long error;
+
+  /* Don't create keys needlessly. */
+  if (! _tcslen(cmd)) {
+    key = open_registry(service_name, registry, KEY_READ, false);
+    if (! key) return 0;
+    error = RegQueryValueEx(key, hook_action, 0, 0, 0, 0);
+    RegCloseKey(key);
+    if (error == ERROR_FILE_NOT_FOUND) return 0;
+  }
+
+  key = open_registry(service_name, registry, KEY_WRITE);
+  if (! key) return 1;
+
+  int ret = 1;
+  if (_tcslen(cmd)) ret = set_string(key, (TCHAR *) hook_action, cmd, true);
+  else {
+    error = RegDeleteValue(key, hook_action);
+    if (error == ERROR_SUCCESS || error == ERROR_FILE_NOT_FOUND) ret = 0;
+  }
+
+  /* Close registry */
+  RegCloseKey(key);
+
+  return ret;
+}
+
+int get_hook(const TCHAR *service_name, const TCHAR *hook_event, const TCHAR *hook_action, TCHAR *buffer, unsigned long buflen) {
+  /* Try to open the registry */
+  TCHAR registry[KEY_LENGTH];
+  if (_sntprintf_s(registry, _countof(registry), _TRUNCATE, _T("%s\\%s"), NSSM_REG_HOOK, hook_event) < 0) {
+    log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_OUT_OF_MEMORY, _T("hook registry"), _T("get_hook()"), 0);
+    return 1;
+  }
+  HKEY key;
+  long error = open_registry(service_name, registry, KEY_READ, &key, false);
+  if (! key) {
+    if (error == ERROR_FILE_NOT_FOUND) {
+      ZeroMemory(buffer, buflen);
+      return 0;
+    }
+    return 1;
+  }
+
+  int ret = expand_parameter(key, (TCHAR *) hook_action, buffer, buflen, true, false);
+
+  /* Close registry */
+  RegCloseKey(key);
+
+  return ret;
+}