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o Send a CHAP challenge of 16 random digits when RADIUS is
configured. This isn't strictly necessary according to the rfc, but it's suggested there.... o Don't forget to include our authname when sending a CHAP challenge when RADIUS is configured. o Don't supply the ``16'' representing the chap answer length to radius_Authenticate() - libradius does this for us. o When we successfully authenticate via radius_Authenticate(), continue with datalink_AuthOk() as expected. Sponsored by: Internet Business Solutions Ltd., Switzerland
This commit is contained in:
Brian Somers
parent
d30ad2abf7
commit
82d6780c9e
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=43401
@ -17,7 +17,7 @@
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: chap.c,v 1.37 1998/08/26 18:07:56 brian Exp $
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* $Id: chap.c,v 1.38 1999/01/28 01:56:31 brian Exp $
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*
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* TODO:
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*/
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@ -105,24 +105,24 @@ chap_SendChallenge(struct authinfo *auth, int chapid, struct physical *physical)
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randinit();
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cp = chap->challenge_data;
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#ifndef NORADIUS
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if (*physical->dl->bundle->radius.cfg.file) {
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/* For radius, our challenge is 16 readable NUL terminated bytes :*/
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*cp++ = chap->challenge_len = 16;
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for (i = 0; i < chap->challenge_len; i++)
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*cp++ = (random() & (0x7f - 0x20)) + 0x20;
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*cp = '\0';
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} else {
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*cp++ = (random() % 10) + '0';
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} else
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#endif
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{
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*cp++ = chap->challenge_len = random() % (CHAPCHALLENGELEN-16) + 16;
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for (i = 0; i < chap->challenge_len; i++)
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*cp++ = random() & 0xff;
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len = strlen(physical->dl->bundle->cfg.auth.name);
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memcpy(cp, physical->dl->bundle->cfg.auth.name, len);
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cp += len;
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#ifndef NORADIUS
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}
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#endif
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len = strlen(physical->dl->bundle->cfg.auth.name);
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memcpy(cp, physical->dl->bundle->cfg.auth.name, len);
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cp += len;
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ChapOutput(physical, CHAP_CHALLENGE, chapid, chap->challenge_data,
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cp - chap->challenge_data, NULL);
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}
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@ -131,8 +131,7 @@ static void
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RecvChapTalk(struct bundle *bundle, struct fsmheader *chp, struct mbuf *bp,
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struct physical *physical)
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{
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int valsize, len;
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int arglen, keylen, namelen;
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int valsize, len, arglen, keylen, namelen, success;
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char *cp, *argp, *ap, *name, *digest;
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char *keyp;
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MD5_CTX MD5context; /* context for MD5 */
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@ -229,20 +228,23 @@ RecvChapTalk(struct bundle *bundle, struct fsmheader *chp, struct mbuf *bp,
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/*
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* Get a secret key corresponds to the peer
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*/
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success = 0;
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#ifndef NORADIUS
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if (*bundle->radius.cfg.file) {
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char chapname[AUTHLEN];
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char chapname[AUTHLEN], chal[17];
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if (namelen > AUTHLEN - 1)
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namelen = AUTHLEN - 1;
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strncpy(chapname, name, namelen);
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chapname[namelen] = '\0';
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strncpy(answer, cp-1, 17);
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*answer = chp->id;
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strncpy(answer+1, cp, 16);
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answer[17] = '\0';
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strncpy(chal, physical->dl->chap.challenge_data + 1, 16);
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chal[16] = '\0';
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if (radius_Authenticate(&bundle->radius, bundle, chapname, answer,
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physical->dl->chap.challenge_data + 1))
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break; /* And there was much rejoicing ! */
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if (radius_Authenticate(&bundle->radius, bundle, chapname, answer, chal))
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success = 1; /* And there was much rejoicing ! */
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} else
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#endif
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@ -264,30 +266,31 @@ RecvChapTalk(struct bundle *bundle, struct fsmheader *chp, struct mbuf *bp,
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/*
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* Compare with the response
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*/
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if (memcmp(cp, cdigest, 16) == 0) {
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datalink_GotAuthname(physical->dl, name, namelen);
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ChapOutput(physical, CHAP_SUCCESS, chp->id, "Welcome!!", 10, NULL);
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physical->link.lcp.auth_ineed = 0;
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if (Enabled(bundle, OPT_UTMP))
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physical_Login(physical, name);
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if (physical->link.lcp.auth_iwait == 0)
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/*
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* Either I didn't need to authenticate, or I've already been
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* told that I got the answer right.
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*/
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datalink_AuthOk(physical->dl);
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break;
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}
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if (memcmp(cp, cdigest, 16) == 0)
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success = 1;
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}
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/*
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* Peer is not registerd, or response digest is wrong.
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*/
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ChapOutput(physical, CHAP_FAILURE, chp->id, "Invalid!!", 9, NULL);
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datalink_AuthNotOk(physical->dl);
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break;
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if (success) {
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datalink_GotAuthname(physical->dl, name, namelen);
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ChapOutput(physical, CHAP_SUCCESS, chp->id, "Welcome!!", 10, NULL);
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physical->link.lcp.auth_ineed = 0;
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if (Enabled(bundle, OPT_UTMP))
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physical_Login(physical, name);
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if (physical->link.lcp.auth_iwait == 0)
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/*
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* Either I didn't need to authenticate, or I've already been
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* told that I got the answer right.
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*/
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datalink_AuthOk(physical->dl);
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} else {
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/*
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* Peer is not registerd, or response digest is wrong.
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*/
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ChapOutput(physical, CHAP_FAILURE, chp->id, "Invalid!!", 9, NULL);
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datalink_AuthNotOk(physical->dl);
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break;
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}
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}
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}
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@ -23,7 +23,7 @@
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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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* $Id:$
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* $Id: radius.c,v 1.1 1999/01/28 01:56:34 brian Exp $
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*
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*/
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@ -265,10 +265,11 @@ radius_Authenticate(struct radius *r, struct bundle *bundle, const char *name,
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return 0;
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}
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rad_close(h);
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r->valid = 1;
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log_Printf(LogPHASE, "radius: SUCCESS\n");
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rad_close(h);
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return r->valid = 1;
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return 1;
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}
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void
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