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    revision 532 by niro, Sat Sep 1 22:45:15 2007 UTC revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
    # Line 5  Line 5 
    5   *  Licensed under the GPL v2 or later, see the file LICENSE in this tarball.   *  Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
    6   */   */
    7    
    8  #include "busybox.h"  #include "libbb.h"
    9  #include <syslog.h>  #include <syslog.h>
    10    
    11  #define SU_OPT_mp (3)  #define SU_OPT_mp (3)
    12  #define SU_OPT_l (4)  #define SU_OPT_l (4)
    13    
    14  int su_main(int argc, char **argv)  int su_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
    15    int su_main(int argc UNUSED_PARAM, char **argv)
    16  {  {
    17   unsigned flags;   unsigned flags;
    18   char *opt_shell = 0;   char *opt_shell = NULL;
    19   char *opt_command = 0;   char *opt_command = NULL;
    20   char *opt_username = "root";   const char *opt_username = "root";
    21   struct passwd *pw;   struct passwd *pw;
    22   uid_t cur_uid = getuid();   uid_t cur_uid = getuid();
    23   const char *tty;   const char *tty;
    24   char *old_user;   char *old_user;
    25    
    26   flags = getopt32(argc, argv, "mplc:s:", &opt_command, &opt_shell);   flags = getopt32(argv, "mplc:s:", &opt_command, &opt_shell);
    27   argc -= optind;   //argc -= optind;
    28   argv += optind;   argv += optind;
    29    
    30   if (argc && LONE_DASH(argv[0])) {   if (argv[0] && LONE_DASH(argv[0])) {
    31   flags |= SU_OPT_l;   flags |= SU_OPT_l;
      argc--;  
    32   argv++;   argv++;
    33   }   }
    34    
    35   /* get user if specified */   /* get user if specified */
    36   if (argc) {   if (argv[0]) {
    37   opt_username = argv[0];   opt_username = argv[0];
     // argc--;  
    38   argv++;   argv++;
    39   }   }
    40    
    # Line 85  int su_main(int argc, char **argv) Line 84  int su_main(int argc, char **argv)
    84     compromise the account by allowing access with a standard     compromise the account by allowing access with a standard
    85     shell.  */     shell.  */
    86   bb_error_msg("using restricted shell");   bb_error_msg("using restricted shell");
    87   opt_shell = 0;   opt_shell = NULL;
    88   }   }
    89  #endif  #endif
    90   if (!opt_shell)   if (!opt_shell)
    91   opt_shell = pw->pw_shell;   opt_shell = pw->pw_shell;
    92    
    93   change_identity(pw);   change_identity(pw);
    94     /* setup_environment params: shell, clear_env, change_env, pw */
    95   setup_environment(opt_shell, flags & SU_OPT_l, !(flags & SU_OPT_mp), pw);   setup_environment(opt_shell, flags & SU_OPT_l, !(flags & SU_OPT_mp), pw);
    96   USE_SELINUX(set_current_security_context(NULL);)   USE_SELINUX(set_current_security_context(NULL);)
    97    
    98   /* Never returns */   /* Never returns */
    99   run_shell(opt_shell, flags & SU_OPT_l, opt_command, (const char**)argv);   run_shell(opt_shell, flags & SU_OPT_l, opt_command, (const char**)argv);
    100    
    101   return EXIT_FAILURE;   /* return EXIT_FAILURE; - not reached */
    102  }  }
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