184 lines
4.4 KiB
C
184 lines
4.4 KiB
C
/*
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* Copyright (c) 1995 - 2002 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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RCSID("$Id: pagsh.c,v 1.6 2002/08/23 17:54:20 assar Exp $");
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#include <time.h>
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#ifdef HAVE_PWD_H
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#include <pwd.h>
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#endif
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#ifdef KRB5
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#include <krb5.h>
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#endif
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#ifdef KRB4
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#include <krb.h>
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#endif
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#include <kafs.h>
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#include <err.h>
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#include <roken.h>
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#include <getarg.h>
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static int help_flag;
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static int version_flag;
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static int c_flag;
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struct getargs getargs[] = {
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{ NULL, 'c', arg_flag, &c_flag },
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{ "version", 0, arg_flag, &version_flag },
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{ "help", 'h', arg_flag, &help_flag },
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};
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static int num_args = sizeof(getargs) / sizeof(getargs[0]);
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static void
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usage(int ecode)
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{
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arg_printusage(getargs, num_args, NULL, "command [args...]");
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exit(ecode);
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}
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/*
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* Run command with a new ticket file / credentials cache / token
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*/
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int
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main(int argc, char **argv)
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{
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int f;
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char tf[1024];
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char *p;
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char *path;
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char **args;
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int i;
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int optind = 0;
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set_progname(argv[0]);
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if(getarg(getargs, num_args, argc, argv, &optind))
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usage(1);
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if(help_flag)
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usage(0);
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if(version_flag) {
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print_version(NULL);
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exit(0);
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}
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argc -= optind;
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argv += optind;
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#ifdef KRB5
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snprintf (tf, sizeof(tf), "%sXXXXXX", KRB5_DEFAULT_CCROOT);
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f = mkstemp (tf + 5);
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close (f);
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unlink (tf + 5);
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esetenv("KRB5CCNAME", tf, 1);
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#endif
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#ifdef KRB4
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snprintf (tf, sizeof(tf), "%s_XXXXXX", TKT_ROOT);
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f = mkstemp (tf);
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close (f);
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unlink (tf);
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esetenv("KRBTKFILE", tf, 1);
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#endif
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i = 0;
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args = (char **) malloc((argc + 10)*sizeof(char *));
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if (args == NULL)
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errx (1, "Out of memory allocating %lu bytes",
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(unsigned long)((argc + 10)*sizeof(char *)));
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if(*argv == NULL) {
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path = getenv("SHELL");
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if(path == NULL){
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struct passwd *pw = k_getpwuid(geteuid());
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path = strdup(pw->pw_shell);
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}
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} else {
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path = strdup(*argv++);
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}
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if (path == NULL)
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errx (1, "Out of memory copying path");
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p=strrchr(path, '/');
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if(p)
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args[i] = strdup(p+1);
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else
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args[i] = strdup(path);
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if (args[i++] == NULL)
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errx (1, "Out of memory copying arguments");
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while(*argv)
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args[i++] = *argv++;
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args[i++] = NULL;
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if(k_hasafs())
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k_setpag();
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unsetenv("PAGPID");
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execvp(path, args);
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if (errno == ENOENT) {
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char **sh_args = malloc ((i + 2) * sizeof(char *));
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int j;
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if (sh_args == NULL)
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errx (1, "Out of memory copying sh arguments");
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for (j = 1; j < i; ++j)
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sh_args[j + 2] = args[j];
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sh_args[0] = "sh";
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sh_args[1] = "-c";
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sh_args[2] = path;
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execv ("/bin/sh", sh_args);
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}
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err (1, "execvp");
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}
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