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- #include "nssm.h"
- extern unsigned long tls_index;
- /* String function */
- int str_equiv(const char *a, const char *b) {
- int i;
- for (i = 0; ; i++) {
- if (tolower(b[i]) != tolower(a[i])) return 0;
- if (! a[i]) return 1;
- }
- }
- /* How to use me correctly */
- int usage(int ret) {
- fprintf(stderr, "NSSM: The non-sucking service manager\n");
- fprintf(stderr, "Version %s, %s\n", NSSM_VERSION, NSSM_DATE);
- fprintf(stderr, "Usage: nssm <option> [args]\n\n");
- fprintf(stderr, "To show service installation GUI:\n\n");
- fprintf(stderr, " nssm install [<servicename>]\n\n");
- fprintf(stderr, "To install a service without confirmation:\n\n");
- fprintf(stderr, " nssm install <servicename> <app> [<args>]\n\n");
- fprintf(stderr, "To show service removal GUI:\n\n");
- fprintf(stderr, " nssm remove [<servicename>]\n\n");
- fprintf(stderr, "To remove a service without confirmation:\n\n");
- fprintf(stderr, " nssm remove <servicename> confirm\n");
- return(ret);
- }
- int check_admin(char *action) {
- /* Lifted from MSDN examples */
- PSID AdministratorsGroup;
- SID_IDENTIFIER_AUTHORITY NtAuthority = SECURITY_NT_AUTHORITY;
- BOOL ok = AllocateAndInitializeSid(&NtAuthority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &AdministratorsGroup);
- if (ok) {
- if (! CheckTokenMembership(0, AdministratorsGroup, &ok)) ok = 0;
- FreeSid(AdministratorsGroup);
- if (ok) return 0;
- fprintf(stderr, "Administator access is needed to %s a service.\n", action);
- return 1;
- }
- /* Can't tell if we are admin or not; later operations may fail */
- return 0;
- }
- int main(int argc, char **argv) {
- /* Require an argument since users may try to run nssm directly */
- if (argc == 1) exit(usage(1));
- /* Elevate */
- if (str_equiv(argv[1], "install") || str_equiv(argv[1], "remove")) {
- if (check_admin(argv[1])) exit(100);
- }
- /* Valid commands are install or remove */
- if (str_equiv(argv[1], "install")) {
- exit(pre_install_service(argc - 2, argv + 2));
- }
- if (str_equiv(argv[1], "remove")) {
- exit(pre_remove_service(argc - 2, argv + 2));
- }
- /* Undocumented: "run" is used to actually do service stuff */
- if (! str_equiv(argv[1], NSSM_RUN)) exit(usage(2));
- /* Thread local storage for error message buffer */
- tls_index = TlsAlloc();
- /* Register messages */
- create_messages();
- /* Start service magic */
- SERVICE_TABLE_ENTRY table[] = { { NSSM, service_main }, { 0, 0 } };
- if (! StartServiceCtrlDispatcher(table)) {
- log_event(EVENTLOG_ERROR_TYPE, NSSM_EVENT_DISPATCHER_FAILED, error_string(GetLastError()), 0);
- return 100;
- }
- /* And nothing more to do */
- return 0;
- }
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