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92 lines
2.8 KiB
C++
92 lines
2.8 KiB
C++
#include "nssm.h"
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extern unsigned long tls_index;
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extern bool is_admin;
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extern imports_t imports;
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/* String function */
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int str_equiv(const char *a, const char *b) {
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int i;
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for (i = 0; ; i++) {
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if (tolower(b[i]) != tolower(a[i])) return 0;
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if (! a[i]) return 1;
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}
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}
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/* How to use me correctly */
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int usage(int ret) {
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print_message(stderr, NSSM_MESSAGE_USAGE, NSSM_VERSION, NSSM_DATE);
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return(ret);
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}
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void check_admin() {
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is_admin = false;
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/* Lifted from MSDN examples */
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PSID AdministratorsGroup;
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SID_IDENTIFIER_AUTHORITY NtAuthority = SECURITY_NT_AUTHORITY;
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if (! AllocateAndInitializeSid(&NtAuthority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &AdministratorsGroup)) return;
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CheckTokenMembership(0, AdministratorsGroup, /*XXX*/(PBOOL) &is_admin);
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FreeSid(AdministratorsGroup);
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}
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int main(int argc, char **argv) {
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/* Remember if we are admin */
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check_admin();
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/* Elevate */
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if (argc > 1) {
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/* Valid commands are install or remove */
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if (str_equiv(argv[1], "install")) {
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if (! is_admin) {
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print_message(stderr, NSSM_MESSAGE_NOT_ADMINISTRATOR_CANNOT_INSTALL);
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exit(100);
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}
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exit(pre_install_service(argc - 2, argv + 2));
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}
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if (str_equiv(argv[1], "remove")) {
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if (! is_admin) {
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print_message(stderr, NSSM_MESSAGE_NOT_ADMINISTRATOR_CANNOT_REMOVE);
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exit(100);
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}
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exit(pre_remove_service(argc - 2, argv + 2));
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}
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}
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/* Thread local storage for error message buffer */
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tls_index = TlsAlloc();
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/* Register messages */
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if (is_admin) create_messages();
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/*
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Optimisation for Windows 2000:
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When we're run from the command line the StartServiceCtrlDispatcher() call
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will time out after a few seconds on Windows 2000. On newer versions the
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call returns instantly. Check for stdin first and only try to call the
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function if there's no input stream found. Although it's possible that
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we're running with input redirected it's much more likely that we're
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actually running as a service.
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This will save time when running with no arguments from a command prompt.
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*/
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if (_fileno(stdin) < 0) {
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/* Set up function pointers. */
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if (get_imports()) exit(111);
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/* Start service magic */
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SERVICE_TABLE_ENTRY table[] = { { NSSM, service_main }, { 0, 0 } };
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if (! StartServiceCtrlDispatcher(table)) {
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unsigned long error = GetLastError();
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/* User probably ran nssm with no argument */
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if (error == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) exit(usage(1));
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log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DISPATCHER_FAILED, error_string(error), 0);
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free_imports();
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exit(100);
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}
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}
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else exit(usage(1));
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/* And nothing more to do */
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exit(0);
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}
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