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sudo v 1.8.10p3

    1: /*
    2:  * Copyright (c) 2008, 2010-2013 Todd C. Miller <Todd.Miller@courtesan.com>
    3:  *
    4:  * Permission to use, copy, modify, and distribute this software for any
    5:  * purpose with or without fee is hereby granted, provided that the above
    6:  * copyright notice and this permission notice appear in all copies.
    7:  *
    8:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
    9:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   10:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   11:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   12:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   13:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   14:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   15:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   16:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   17:  */
   18: 
   19: #include <config.h>
   20: 
   21: #include <sys/types.h>
   22: #include <limits.h>
   23: #include <stdio.h>
   24: #include <stdlib.h>
   25: #include <string.h>
   26: #include <signal.h>
   27: #include <unistd.h>
   28: #ifdef HAVE_STDBOOL_H
   29: # include <stdbool.h>
   30: #else
   31: # include "compat/stdbool.h"
   32: #endif /* HAVE_STDBOOL_H */
   33: 
   34: #include "gettext.h"		/* must be included before missing.h */
   35: 
   36: #include "missing.h"
   37: #include "alloc.h"
   38: #include "fatal.h"
   39: #include "sudo_conf.h"
   40: #include "sudo_debug.h"
   41: #include "sudo_exec.h"
   42: #include "sudo_plugin.h"
   43: 
   44: __dso_public int main(int argc, char *argv[], char *envp[]);
   45: 
   46: int
   47: main(int argc, char *argv[], char *envp[])
   48: {
   49:     char *cp, *cmnd;
   50:     bool login_shell, noexec = false;
   51:     debug_decl(main, SUDO_DEBUG_MAIN)
   52: 
   53:     setlocale(LC_ALL, "");
   54:     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
   55:     textdomain(PACKAGE_NAME);
   56: 
   57:     if (argc < 2)
   58: 	fatalx(U_("requires at least one argument"));
   59: 
   60:     /* Read sudo.conf. */
   61:     sudo_conf_read(NULL);
   62: 
   63:     /* If the first char of argv[0] is '-', we are running as a login shell. */
   64:     login_shell = argv[0][0] == '-';
   65: 
   66:     /* If argv[0] ends in -noexec, pass the flag to sudo_execve() */
   67:     if ((cp = strrchr(argv[0], '-')) != NULL && cp != argv[0])
   68: 	noexec = strcmp(cp, "-noexec") == 0;
   69: 
   70:     /* Shift argv and make a copy of the command to execute. */
   71:     argv++;
   72:     argc--;
   73:     cmnd = estrdup(argv[0]);
   74: 
   75:     /* If invoked as a login shell, modify argv[0] accordingly. */
   76:     if (login_shell) {
   77: 	if ((cp = strrchr(argv[0], '/')) == NULL)
   78: 	    cp = argv[0];
   79: 	*cp = '-';
   80:     }
   81:     sudo_execve(cmnd, argv, envp, noexec);
   82:     warning(U_("unable to execute %s"), argv[0]);
   83:     sudo_debug_exit_int(__func__, __FILE__, __LINE__, sudo_debug_subsys, EXIT_FAILURE);                
   84:     _exit(EXIT_FAILURE);
   85: }