Return to ppp_auth.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / libpdel / ppp

Annotation of embedaddon/libpdel/ppp/ppp_auth.c, revision 1.1.1.1

1.1       misho       1: 
                      2: /*
                      3:  * Copyright (c) 2001-2002 Packet Design, LLC.
                      4:  * All rights reserved.
                      5:  * 
                      6:  * Subject to the following obligations and disclaimer of warranty,
                      7:  * use and redistribution of this software, in source or object code
                      8:  * forms, with or without modifications are expressly permitted by
                      9:  * Packet Design; provided, however, that:
                     10:  * 
                     11:  *    (i)  Any and all reproductions of the source or object code
                     12:  *         must include the copyright notice above and the following
                     13:  *         disclaimer of warranties; and
                     14:  *    (ii) No rights are granted, in any manner or form, to use
                     15:  *         Packet Design trademarks, including the mark "PACKET DESIGN"
                     16:  *         on advertising, endorsements, or otherwise except as such
                     17:  *         appears in the above copyright notice or in the software.
                     18:  * 
                     19:  * THIS SOFTWARE IS BEING PROVIDED BY PACKET DESIGN "AS IS", AND
                     20:  * TO THE MAXIMUM EXTENT PERMITTED BY LAW, PACKET DESIGN MAKES NO
                     21:  * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING
                     22:  * THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED
                     23:  * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE,
                     24:  * OR NON-INFRINGEMENT.  PACKET DESIGN DOES NOT WARRANT, GUARANTEE,
                     25:  * OR MAKE ANY REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS
                     26:  * OF THE USE OF THIS SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY,
                     27:  * RELIABILITY OR OTHERWISE.  IN NO EVENT SHALL PACKET DESIGN BE
                     28:  * LIABLE FOR ANY DAMAGES RESULTING FROM OR ARISING OUT OF ANY USE
                     29:  * OF THIS SOFTWARE, INCLUDING WITHOUT LIMITATION, ANY DIRECT,
                     30:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE, OR CONSEQUENTIAL
                     31:  * DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, LOSS OF
                     32:  * USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY THEORY OF
                     33:  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     34:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
                     35:  * THE USE OF THIS SOFTWARE, EVEN IF PACKET DESIGN IS ADVISED OF
                     36:  * THE POSSIBILITY OF SUCH DAMAGE.
                     37:  *
                     38:  * Author: Archie Cobbs <archie@freebsd.org>
                     39:  */
                     40: 
                     41: #include "ppp/ppp_defs.h"
                     42: #include "ppp/ppp_log.h"
                     43: #include "ppp/ppp_fsm_option.h"
                     44: #include "ppp/ppp_auth.h"
                     45: #include "ppp/ppp_auth_pap.h"
                     46: #include "ppp/ppp_auth_chap.h"
                     47: 
                     48: /***********************************************************************
                     49:                        AUTH TYPE FUNCTIONS
                     50: ***********************************************************************/
                     51: 
                     52: /* Types of CHAP */
                     53: #define CHAP_PROTO_MD5         0x05
                     54: #define CHAP_PROTO_MSV1                0x80
                     55: #define CHAP_PROTO_MSV2                0x81
                     56: 
                     57: #define PRBYT(x)       ((PPP_PROTO_ ## x) >> 8), ((PPP_PROTO_ ## x) & 0xff)
                     58: 
                     59: /* Keep consistent with "ppp_auth.h" */
                     60: static const   struct ppp_auth_type ppp_auth_types[PPP_AUTH_MAX] = {
                     61:     {
                     62:        "None",
                     63:        PPP_AUTH_NONE,
                     64:        NULL,
                     65:        NULL,
                     66:        0
                     67:     },
                     68:     {
                     69:        "PAP",
                     70:        PPP_AUTH_PAP,
                     71:        ppp_auth_pap_start,
                     72:        ppp_auth_pap_cancel,
                     73:        ppp_auth_pap_input,
                     74:        2, { PRBYT(PAP) }
                     75:     },
                     76:     {
                     77:        "CHAP-MSv1",
                     78:        PPP_AUTH_CHAP_MSV1,
                     79:        ppp_auth_chap_start,
                     80:        ppp_auth_chap_cancel,
                     81:        ppp_auth_chap_input,
                     82:        3, { PRBYT(CHAP), CHAP_PROTO_MSV1 }
                     83:     },
                     84:     {
                     85:        "CHAP-MSv2",
                     86:        PPP_AUTH_CHAP_MSV2,
                     87:        ppp_auth_chap_start,
                     88:        ppp_auth_chap_cancel,
                     89:        ppp_auth_chap_input,
                     90:        3, { PRBYT(CHAP), CHAP_PROTO_MSV2 }
                     91:     },
                     92:     {
                     93:        "CHAP-MD5",
                     94:        PPP_AUTH_CHAP_MD5,
                     95:        ppp_auth_chap_start,
                     96:        ppp_auth_chap_cancel,
                     97:        ppp_auth_chap_input,
                     98:        3, { PRBYT(CHAP), CHAP_PROTO_MD5 }
                     99:     },
                    100: };
                    101: 
                    102: /*
                    103:  * Find auth type descriptor by LCP option.
                    104:  */
                    105: const struct ppp_auth_type *
                    106: ppp_auth_by_option(const struct ppp_fsm_option *opt)
                    107: {
                    108:        int i;
                    109: 
                    110:        for (i = 1; i < PPP_AUTH_MAX; i++) {
                    111:                const struct ppp_auth_type *const auth = &ppp_auth_types[i];
                    112: 
                    113:                if (auth->index != PPP_AUTH_NONE        /* saftey first! */
                    114:                    && opt->len == auth->len
                    115:                    && memcmp(opt->data, auth->data, auth->len) == 0)
                    116:                        return (auth);
                    117:        }
                    118:        return (NULL);
                    119: }
                    120: 
                    121: /*
                    122:  * Find auth type descriptor by index.
                    123:  */
                    124: const struct ppp_auth_type *
                    125: ppp_auth_by_index(enum ppp_auth_index index)
                    126: {
                    127:        if (index <= 0 || index > PPP_AUTH_MAX) {
                    128:                errno = EINVAL;
                    129:                return (NULL);
                    130:        }
                    131:        return (&ppp_auth_types[index]);
                    132: }
                    133: 
                    134: /*
                    135:  * Print out an auth type option.
                    136:  */
                    137: void
                    138: ppp_auth_print(const struct ppp_fsm_optdesc *desc,
                    139:        const struct ppp_fsm_option *opt, char *buf, size_t bmax)
                    140: {
                    141:        const struct ppp_auth_type *const auth = ppp_auth_by_option(opt);
                    142: 
                    143:        if (auth != NULL) {
                    144:                snprintf(buf, bmax, "%s", auth->name);
                    145:                return;
                    146:        }
                    147:        if (opt->len < 2) {
                    148:                snprintf(buf, bmax, "<truncated>");
                    149:                return;
                    150:        }
                    151:        snprintf(buf, bmax, "?0x%02x%02x", opt->data[0], opt->data[1]);
                    152: }
                    153: