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author | markm <markm@FreeBSD.org> | 1997-09-04 06:04:33 +0000 |
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committer | markm <markm@FreeBSD.org> | 1997-09-04 06:04:33 +0000 |
commit | a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8 (patch) | |
tree | 0b84977f19022a965f8c6145f067f951173f6290 /crypto/kerberosIV/lib/roken/getusershell.c | |
download | FreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.zip FreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.tar.gz |
Initial import of KTH eBones. This has been cleaned up to only include
the "core" Kerberos functionality. The rest of the userland will get their
own changes later.
Diffstat (limited to 'crypto/kerberosIV/lib/roken/getusershell.c')
-rw-r--r-- | crypto/kerberosIV/lib/roken/getusershell.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/crypto/kerberosIV/lib/roken/getusershell.c b/crypto/kerberosIV/lib/roken/getusershell.c new file mode 100644 index 0000000..87a48ec --- /dev/null +++ b/crypto/kerberosIV/lib/roken/getusershell.c @@ -0,0 +1,160 @@ +/* + * Copyright (c) 1985, 1993 + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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. + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +RCSID("$Id: getusershell.c,v 1.8 1997/04/20 06:18:03 assar Exp $"); + +#ifndef HAVE_GETUSERSHELL + +#include <stdio.h> +#include <stdlib.h> +#ifdef HAVE_PATHS_H +#include <paths.h> +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif +#ifdef HAVE_SYS_PARAM_H +#include <sys/param.h> +#endif + +#ifndef _PATH_SHELLS +#define _PATH_SHELLS "/etc/shells" +#endif + +#ifndef _PATH_BSHELL +#define _PATH_BSHELL "/bin/sh" +#endif + +#ifndef _PATH_CSHELL +#define _PATH_CSHELL "/bin/csh" +#endif + +/* + * Local shells should NOT be added here. They should be added in + * /etc/shells. + */ + +static char *okshells[] = { _PATH_BSHELL, _PATH_CSHELL, NULL }; +static char **curshell, **shells, *strings; +static char **initshells (void); + +/* + * Get a list of shells from _PATH_SHELLS, if it exists. + */ +char * +getusershell() +{ + char *ret; + + if (curshell == NULL) + curshell = initshells(); + ret = *curshell; + if (ret != NULL) + curshell++; + return (ret); +} + +void +endusershell() +{ + + if (shells != NULL) + free(shells); + shells = NULL; + if (strings != NULL) + free(strings); + strings = NULL; + curshell = NULL; +} + +void +setusershell() +{ + + curshell = initshells(); +} + +static char ** +initshells() +{ + char **sp, *cp; + FILE *fp; + struct stat statb; + + if (shells != NULL) + free(shells); + shells = NULL; + if (strings != NULL) + free(strings); + strings = NULL; + if ((fp = fopen(_PATH_SHELLS, "r")) == NULL) + return (okshells); + if (fstat(fileno(fp), &statb) == -1) { + fclose(fp); + return (okshells); + } + if ((strings = malloc((u_int)statb.st_size)) == NULL) { + fclose(fp); + return (okshells); + } + shells = calloc((unsigned)statb.st_size / 3, sizeof (char *)); + if (shells == NULL) { + fclose(fp); + free(strings); + strings = NULL; + return (okshells); + } + sp = shells; + cp = strings; + while (fgets(cp, MaxPathLen + 1, fp) != NULL) { + while (*cp != '#' && *cp != '/' && *cp != '\0') + cp++; + if (*cp == '#' || *cp == '\0') + continue; + *sp++ = cp; + while (!isspace(*cp) && *cp != '#' && *cp != '\0') + cp++; + *cp++ = '\0'; + } + *sp = NULL; + fclose(fp); + return (shells); +} +#endif /* HAVE_GETUSERSHELL */ |