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/* $OpenBSD: login_radius.c,v 1.9 2017/04/27 20:55:52 millert Exp $ */ |
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/*- |
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* Copyright (c) 1996, 1997 Berkeley Software Design, Inc. 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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* 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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* 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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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* This product includes software developed by Berkeley Software Design, |
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* Inc. |
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* 4. The name of Berkeley Software Design, Inc. may not be used to endorse |
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* or promote products derived from this software without specific prior |
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* written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``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 BERKELEY SOFTWARE DESIGN, INC. 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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* BSDI $From: login_radius.c,v 1.4 1998/04/14 00:39:02 prb Exp $ |
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*/ |
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/* |
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* Copyright(c) 1996 by tfm associates. |
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* All rights reserved. |
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* |
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* tfm associates |
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* P.O. Box 2086 |
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* Eugene OR 97402-0031 |
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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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* 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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* 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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* 3. The name of tfm associates may not be used to endorse or promote |
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* products derived from this software without specific prior written |
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* permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY TFM ASSOC``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL TFM ASSOCIATES BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <sys/types.h> |
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#include <netinet/in.h> |
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#include <ctype.h> |
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#include <err.h> |
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#include <login_cap.h> |
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#include <pwd.h> |
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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 <syslog.h> |
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#include <unistd.h> |
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#include <bsd_auth.h> |
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#include "login_radius.h" |
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static int cleanstring(char *); |
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int |
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main(int argc, char **argv) |
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{ |
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FILE *back; |
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char challenge[1024]; |
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char *class, *service, *style, *username, *password, *emsg; |
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int c, n; |
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extern char *__progname; |
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if (pledge("stdio rpath wpath inet dns tty", NULL) == -1) { |
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syslog(LOG_AUTH|LOG_ERR, "pledge: %m"); |
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exit(1); |
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} |
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back = NULL; |
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password = class = service = NULL; |
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/* |
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* Usage: login_xxx [-s service] [-v var] user [class] |
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*/ |
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while ((c = getopt(argc, argv, "ds:v:")) != -1) |
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switch (c) { |
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case 'd': |
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back = stdout; |
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break; |
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case 'v': |
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break; |
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case 's': /* service */ |
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service = optarg; |
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if (strcmp(service, "login") != 0 && |
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strcmp(service, "challenge") != 0 && |
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strcmp(service, "response") != 0) |
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errx(1, "%s not supported", service); |
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break; |
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default: |
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syslog(LOG_ERR, "usage error"); |
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exit(1); |
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} |
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if (service == NULL) |
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service = LOGIN_DEFSERVICE; |
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switch (argc - optind) { |
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case 2: |
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class = argv[optind + 1]; |
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case 1: |
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username = argv[optind]; |
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break; |
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default: |
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syslog(LOG_ERR, "usage error"); |
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exit(1); |
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} |
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if ((style = strrchr(__progname, '/'))) |
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++style; |
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else |
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style = __progname; |
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if (strncmp(style, "login_", 6) == 0) |
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style += 6; |
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if (!cleanstring(style)) |
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errx(1, "style contains non-printables"); |
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if (!cleanstring(username)) |
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errx(1, "username contains non-printables"); |
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if (service && !cleanstring(service)) |
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errx(1, "service contains non-printables"); |
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if (class && !cleanstring(class)) |
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errx(1, "class contains non-printables"); |
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/* |
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* Filedes 3 is the back channel, where we send back results. |
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*/ |
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if (back == NULL && (back = fdopen(3, "a")) == NULL) { |
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syslog(LOG_ERR, "reopening back channel"); |
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exit(1); |
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} |
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memset(challenge, 0, sizeof(challenge)); |
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if (strcmp(service, "response") == 0) { |
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c = -1; |
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n = 0; |
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while (++c < sizeof(challenge) && |
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read(3, &challenge[c], 1) == 1) { |
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if (challenge[c] == '\0' && ++n == 2) |
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break; |
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if (challenge[c] == '\0' && n == 1) |
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password = challenge + c + 1; |
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} |
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if (n < 2) { |
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syslog(LOG_ERR, "protocol error on back channel"); |
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exit(1); |
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} |
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} |
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emsg = NULL; |
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c = raddauth(username, class, style, |
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strcmp(service, "login") ? challenge : NULL, password, &emsg); |
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if (c == 0) { |
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if (*challenge == '\0') |
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(void)fprintf(back, BI_AUTH "\n"); |
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else { |
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(void)fprintf(back, BI_VALUE " challenge %s\n", |
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auth_mkvalue(challenge)); |
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(void)fprintf(back, BI_CHALLENGE "\n"); |
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} |
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exit(0); |
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} |
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if (emsg && strcmp(service, "login") == 0) |
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(void)fprintf(stderr, "%s\n", emsg); |
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else if (emsg) |
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(void)fprintf(back, "value errormsg %s\n", auth_mkvalue(emsg)); |
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if (strcmp(service, "challenge") == 0) { |
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(void)fprintf(back, BI_SILENT "\n"); |
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exit(0); |
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} |
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(void)fprintf(back, BI_REJECT "\n"); |
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exit(1); |
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} |
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static int |
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cleanstring(char *s) |
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{ |
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while (isgraph((unsigned char)*s) && *s != '\\') |
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++s; |
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return(*s == '\0' ? 1 : 0); |
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} |