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Annotation of src/usr.bin/ssh/auth-bsdauth.c, Revision 1.1.4.1

1.1       markus      1: /*
                      2:  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
                      3:  *
                      4:  * Redistribution and use in source and binary forms, with or without
                      5:  * modification, are permitted provided that the following conditions
                      6:  * are met:
                      7:  * 1. Redistributions of source code must retain the above copyright
                      8:  *    notice, this list of conditions and the following disclaimer.
                      9:  * 2. Redistributions in binary form must reproduce the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer in the
                     11:  *    documentation and/or other materials provided with the distribution.
                     12:  *
                     13:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     15:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     16:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     17:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     18:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     19:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     20:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     21:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     22:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     23:  */
                     24: #include "includes.h"
1.1.4.1 ! jason      25: RCSID("$OpenBSD: auth-bsdauth.c,v 1.1 2001/05/18 14:13:28 markus Exp $");
1.1       markus     26:
                     27: #ifdef BSD_AUTH
                     28: #include "xmalloc.h"
                     29: #include "auth.h"
                     30: #include "log.h"
                     31:
                     32: static void *
                     33: bsdauth_init_ctx(Authctxt *authctxt)
                     34: {
                     35:        return authctxt;
                     36: }
                     37:
                     38: static int
                     39: bsdauth_query(void *ctx, char **name, char **infotxt,
                     40:    u_int *numprompts, char ***prompts, u_int **echo_on)
                     41: {
                     42:         Authctxt *authctxt = ctx;
                     43:         char *challenge = NULL;
                     44:
                     45:         if (authctxt->as != NULL) {
                     46:                 debug2("bsdauth_query: try reuse session");
                     47:                 challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE);
                     48:                 if (challenge == NULL) {
                     49:                         auth_close(authctxt->as);
                     50:                         authctxt->as = NULL;
                     51:                 }
                     52:         }
                     53:
                     54:         if (challenge == NULL) {
                     55:                 debug2("bsdauth_query: new bsd auth session");
                     56:                 debug3("bsdauth_query: style %s",
                     57:                    authctxt->style ? authctxt->style : "<default>");
                     58:                 authctxt->as = auth_userchallenge(authctxt->user,
                     59:                     authctxt->style, "auth-ssh", &challenge);
                     60:                 if (authctxt->as == NULL)
                     61:                         challenge = NULL;
                     62:                 debug2("bsdauth_query: <%s>", challenge ? challenge : "empty");
                     63:         }
                     64:
                     65:         if (challenge == NULL)
                     66:                 return -1;
                     67:
                     68:         *name       = xstrdup("");
                     69:         *infotxt    = xstrdup("");
                     70:         *numprompts = 1;
                     71:         *prompts = xmalloc(*numprompts * sizeof(char*));
                     72:         *echo_on = xmalloc(*numprompts * sizeof(u_int));
                     73:         (*echo_on)[0] = 0;
                     74:         (*prompts)[0] = xstrdup(challenge);
                     75:
                     76:         return 0;
                     77: }
                     78:
                     79: static int
                     80: bsdauth_respond(void *ctx, u_int numresponses, char **responses)
                     81: {
                     82:         Authctxt *authctxt = ctx;
                     83:         int authok;
                     84:
                     85:         if (authctxt->as == 0)
                     86:                 error("bsdauth_respond: no bsd auth session");
                     87:
                     88:         if (numresponses != 1)
                     89:                 return -1;
                     90:
                     91:         authok = auth_userresponse(authctxt->as, responses[0], 0);
                     92:         authctxt->as = NULL;
                     93:         debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
                     94:
                     95:         return (authok == 0) ? -1 : 0;
                     96: }
                     97:
                     98: static void
                     99: bsdauth_free_ctx(void *ctx)
                    100: {
                    101:         Authctxt *authctxt = ctx;
                    102:
                    103:         if (authctxt && authctxt->as) {
                    104:                 auth_close(authctxt->as);
                    105:                 authctxt->as = NULL;
                    106:         }
                    107: }
                    108:
                    109: KbdintDevice bsdauth_device = {
                    110:        "bsdauth",
                    111:        bsdauth_init_ctx,
                    112:        bsdauth_query,
                    113:        bsdauth_respond,
                    114:        bsdauth_free_ctx
                    115: };
                    116: #endif