diff --git a/usr.bin/env/env.c b/usr.bin/env/env.c index 0aa42a4663dd..a0f55d665a9a 100644 --- a/usr.bin/env/env.c +++ b/usr.bin/env/env.c @@ -1,230 +1,230 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1988, 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static const char copyright[] = "@(#) Copyright (c) 1988, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #if 0 #ifndef lint static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94"; #endif /* not lint */ #endif #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include "envopts.h" extern char **environ; int env_verbosity; static void usage(void); /* * Exit codes. */ #define EXIT_CANCELED 125 /* Internal error prior to exec attempt. */ #define EXIT_CANNOT_INVOKE 126 /* Program located, but not usable. */ #define EXIT_ENOENT 127 /* Could not find program to exec. */ int main(int argc, char **argv) { char *altpath, **ep, *p, **parg, term; char *cleanenv[1]; char *login_class, *login_name; struct passwd *pw; login_cap_t *lc; bool login_as_user; uid_t uid; int ch, want_clear; int rtrn; altpath = NULL; login_class = NULL; login_name = NULL; pw = NULL; lc = NULL; login_as_user = false; want_clear = 0; term = '\n'; while ((ch = getopt(argc, argv, "-0iL:P:S:U:u:v")) != -1) switch(ch) { case '-': case 'i': want_clear = 1; break; case '0': term = '\0'; break; case 'U': login_as_user = true; /* FALLTHROUGH */ case 'L': login_name = optarg; break; case 'P': altpath = strdup(optarg); break; case 'S': /* * The -S option, for "split string on spaces, with * support for some simple substitutions"... */ split_spaces(optarg, &optind, &argc, &argv); break; case 'u': if (env_verbosity) fprintf(stderr, "#env unset:\t%s\n", optarg); rtrn = unsetenv(optarg); if (rtrn == -1) err(EXIT_FAILURE, "unsetenv %s", optarg); break; case 'v': env_verbosity++; if (env_verbosity > 1) fprintf(stderr, "#env verbosity now at %d\n", env_verbosity); break; case '?': default: usage(); } if (want_clear) { environ = cleanenv; cleanenv[0] = NULL; if (env_verbosity) fprintf(stderr, "#env clearing environ\n"); } if (login_name != NULL) { login_class = strchr(login_name, '/'); if (login_class) *login_class++ = '\0'; - if (*login_name != '\0' && strcmp(login_name,"-") != 0) { + if (*login_name != '\0' && strcmp(login_name, "-") != 0) { pw = getpwnam(login_name); if (pw == NULL) { char *endp = NULL; errno = 0; uid = strtoul(login_name, &endp, 10); if (errno == 0 && *endp == '\0') pw = getpwuid(uid); } if (pw == NULL) errx(EXIT_FAILURE, "no such user: %s", login_name); } /* * Note that it is safe for pw to be null here; the libutil * code handles that, bypassing substitution of $ and using * the class "default" if no class name is given either. */ if (login_class != NULL) { lc = login_getclass(login_class); if (lc == NULL) errx(EXIT_FAILURE, "no such login class: %s", login_class); } else { lc = login_getpwclass(pw); if (lc == NULL) errx(EXIT_FAILURE, "login_getpwclass failed"); } /* * This is not done with setusercontext() because that will * try and use ~/.login_conf even when we don't want it to. */ setclassenvironment(lc, pw, 1); setclassenvironment(lc, pw, 0); if (login_as_user) { login_close(lc); if ((lc = login_getuserclass(pw)) != NULL) { setclassenvironment(lc, pw, 1); setclassenvironment(lc, pw, 0); } } endpwent(); if (lc != NULL) login_close(lc); } for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) { if (env_verbosity) fprintf(stderr, "#env setenv:\t%s\n", *argv); *p = '\0'; rtrn = setenv(*argv, p + 1, 1); *p = '='; if (rtrn == -1) err(EXIT_FAILURE, "setenv %s", *argv); } if (*argv) { if (term == '\0') errx(EXIT_CANCELED, "cannot specify command with -0"); if (altpath) search_paths(altpath, argv); if (env_verbosity) { fprintf(stderr, "#env executing:\t%s\n", *argv); for (parg = argv, argc = 0; *parg; parg++, argc++) fprintf(stderr, "#env arg[%d]=\t'%s'\n", argc, *parg); if (env_verbosity > 1) sleep(1); } execvp(*argv, argv); err(errno == ENOENT ? EXIT_ENOENT : EXIT_CANNOT_INVOKE, "%s", *argv); } for (ep = environ; *ep; ep++) (void)printf("%s%c", *ep, term); exit(0); } static void usage(void) { (void)fprintf(stderr, "usage: env [-0iv] [-L|-U user[/class]] [-P utilpath] [-S string] [-u name]\n" " [name=value ...] [utility [argument ...]]\n"); exit(1); }