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Annotation of src/usr.bin/ssh/auth-bsdauth.c, Revision 1.1.6.2

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"
1.1.6.2 ! miod       25: RCSID("$OpenBSD: auth-bsdauth.c,v 1.3 2002/03/18 17:50:31 provos Exp $");
1.1       markus     26:
                     27: #ifdef BSD_AUTH
                     28: #include "xmalloc.h"
                     29: #include "auth.h"
                     30: #include "log.h"
1.1.6.2 ! miod       31: #include "monitor_wrap.h"
1.1       markus     32:
                     33: static void *
                     34: bsdauth_init_ctx(Authctxt *authctxt)
                     35: {
                     36:        return authctxt;
                     37: }
                     38:
1.1.6.2 ! miod       39: int
1.1.6.1   jason      40: bsdauth_query(void *ctx, char **name, char **infotxt,
1.1       markus     41:    u_int *numprompts, char ***prompts, u_int **echo_on)
                     42: {
1.1.6.1   jason      43:        Authctxt *authctxt = ctx;
                     44:        char *challenge = NULL;
1.1       markus     45:
1.1.6.1   jason      46:        if (authctxt->as != NULL) {
                     47:                debug2("bsdauth_query: try reuse session");
                     48:                challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE);
                     49:                if (challenge == NULL) {
                     50:                        auth_close(authctxt->as);
                     51:                        authctxt->as = NULL;
                     52:                }
                     53:        }
                     54:
                     55:        if (challenge == NULL) {
                     56:                debug2("bsdauth_query: new bsd auth session");
                     57:                debug3("bsdauth_query: style %s",
1.1       markus     58:                    authctxt->style ? authctxt->style : "<default>");
1.1.6.1   jason      59:                authctxt->as = auth_userchallenge(authctxt->user,
1.1       markus     60:                     authctxt->style, "auth-ssh", &challenge);
1.1.6.1   jason      61:                if (authctxt->as == NULL)
                     62:                        challenge = NULL;
                     63:                debug2("bsdauth_query: <%s>", challenge ? challenge : "empty");
                     64:        }
                     65:
                     66:        if (challenge == NULL)
                     67:                return -1;
                     68:
                     69:        *name       = xstrdup("");
                     70:        *infotxt    = xstrdup("");
                     71:        *numprompts = 1;
                     72:        *prompts = xmalloc(*numprompts * sizeof(char*));
                     73:        *echo_on = xmalloc(*numprompts * sizeof(u_int));
                     74:        (*echo_on)[0] = 0;
                     75:        (*prompts)[0] = xstrdup(challenge);
1.1       markus     76:
1.1.6.1   jason      77:        return 0;
1.1       markus     78: }
                     79:
1.1.6.2 ! miod       80: int
1.1       markus     81: bsdauth_respond(void *ctx, u_int numresponses, char **responses)
                     82: {
1.1.6.1   jason      83:        Authctxt *authctxt = ctx;
                     84:        int authok;
1.1       markus     85:
1.1.6.1   jason      86:        if (authctxt->as == 0)
                     87:                error("bsdauth_respond: no bsd auth session");
                     88:
                     89:        if (numresponses != 1)
                     90:                return -1;
                     91:
                     92:        authok = auth_userresponse(authctxt->as, responses[0], 0);
                     93:        authctxt->as = NULL;
                     94:        debug3("bsdauth_respond: <%s> = <%d>", responses[0], authok);
                     95:
                     96:        return (authok == 0) ? -1 : 0;
1.1       markus     97: }
                     98:
                     99: static void
                    100: bsdauth_free_ctx(void *ctx)
                    101: {
1.1.6.1   jason     102:        Authctxt *authctxt = ctx;
1.1       markus    103:
1.1.6.1   jason     104:        if (authctxt && authctxt->as) {
                    105:                auth_close(authctxt->as);
                    106:                authctxt->as = NULL;
                    107:        }
1.1       markus    108: }
                    109:
                    110: KbdintDevice bsdauth_device = {
                    111:        "bsdauth",
                    112:        bsdauth_init_ctx,
                    113:        bsdauth_query,
                    114:        bsdauth_respond,
1.1.6.2 ! miod      115:        bsdauth_free_ctx
        !           116: };
        !           117:
        !           118: KbdintDevice mm_bsdauth_device = {
        !           119:        "bsdauth",
        !           120:        bsdauth_init_ctx,
        !           121:        mm_bsdauth_query,
        !           122:        mm_bsdauth_respond,
1.1       markus    123:        bsdauth_free_ctx
                    124: };
                    125: #endif