af1e766495
using the part after the ``\'' if the original name is not found. This allows M$ clients to use domain\user as their authname. Reviewed by: Ian West <ian@niw.com.au>
434 lines
11 KiB
C
434 lines
11 KiB
C
/*-
|
|
* Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org>
|
|
* based on work by Toshiharu OHNO <tony-o@iij.ad.jp>
|
|
* Internet Initiative Japan, Inc (IIJ)
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
|
|
#include <pwd.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
|
|
#include "layer.h"
|
|
#include "mbuf.h"
|
|
#include "defs.h"
|
|
#include "log.h"
|
|
#include "timer.h"
|
|
#include "fsm.h"
|
|
#include "iplist.h"
|
|
#include "throughput.h"
|
|
#include "slcompress.h"
|
|
#include "lqr.h"
|
|
#include "hdlc.h"
|
|
#include "ncpaddr.h"
|
|
#include "ip.h"
|
|
#include "ipcp.h"
|
|
#include "auth.h"
|
|
#include "systems.h"
|
|
#include "lcp.h"
|
|
#include "ccp.h"
|
|
#include "link.h"
|
|
#include "descriptor.h"
|
|
#include "chat.h"
|
|
#include "proto.h"
|
|
#include "filter.h"
|
|
#include "mp.h"
|
|
#ifndef NORADIUS
|
|
#include "radius.h"
|
|
#endif
|
|
#include "cbcp.h"
|
|
#include "chap.h"
|
|
#include "async.h"
|
|
#include "physical.h"
|
|
#include "datalink.h"
|
|
#include "ipv6cp.h"
|
|
#include "ncp.h"
|
|
#include "bundle.h"
|
|
|
|
const char *
|
|
Auth2Nam(u_short auth, u_char type)
|
|
{
|
|
static char chap[10];
|
|
|
|
switch (auth) {
|
|
case PROTO_PAP:
|
|
return "PAP";
|
|
case PROTO_CHAP:
|
|
snprintf(chap, sizeof chap, "CHAP 0x%02x", type);
|
|
return chap;
|
|
case 0:
|
|
return "none";
|
|
}
|
|
return "unknown";
|
|
}
|
|
|
|
static int
|
|
auth_CheckPasswd(const char *name, const char *data, const char *key)
|
|
{
|
|
if (!strcmp(data, "*")) {
|
|
/* Then look up the real password database */
|
|
struct passwd *pw;
|
|
int result;
|
|
|
|
result = (pw = getpwnam(name)) &&
|
|
!strcmp(crypt(key, pw->pw_passwd), pw->pw_passwd);
|
|
endpwent();
|
|
return result;
|
|
}
|
|
|
|
return !strcmp(data, key);
|
|
}
|
|
|
|
int
|
|
auth_SetPhoneList(const char *name, char *phone, int phonelen)
|
|
{
|
|
FILE *fp;
|
|
int n, lineno;
|
|
char *vector[6], buff[LINE_LEN];
|
|
const char *slash;
|
|
|
|
fp = OpenSecret(SECRETFILE);
|
|
if (fp != NULL) {
|
|
again:
|
|
lineno = 0;
|
|
while (fgets(buff, sizeof buff, fp)) {
|
|
lineno++;
|
|
if (buff[0] == '#')
|
|
continue;
|
|
buff[strlen(buff) - 1] = '\0';
|
|
memset(vector, '\0', sizeof vector);
|
|
if ((n = MakeArgs(buff, vector, VECSIZE(vector), PARSE_REDUCE)) < 0)
|
|
log_Printf(LogWARN, "%s: %d: Invalid line\n", SECRETFILE, lineno);
|
|
if (n < 5)
|
|
continue;
|
|
if (strcmp(vector[0], name) == 0) {
|
|
CloseSecret(fp);
|
|
if (*vector[4] == '\0')
|
|
return 0;
|
|
strncpy(phone, vector[4], phonelen - 1);
|
|
phone[phonelen - 1] = '\0';
|
|
return 1; /* Valid */
|
|
}
|
|
}
|
|
|
|
if ((slash = strrchr(name, '\\')) != NULL && slash[1]) {
|
|
/* Look for the name without the leading domain */
|
|
name = slash + 1;
|
|
rewind(fp);
|
|
goto again;
|
|
}
|
|
|
|
CloseSecret(fp);
|
|
}
|
|
*phone = '\0';
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
auth_Select(struct bundle *bundle, const char *name)
|
|
{
|
|
FILE *fp;
|
|
int n, lineno;
|
|
char *vector[5], buff[LINE_LEN];
|
|
const char *slash;
|
|
|
|
if (*name == '\0') {
|
|
ipcp_Setup(&bundle->ncp.ipcp, INADDR_NONE);
|
|
return 1;
|
|
}
|
|
|
|
#ifndef NORADIUS
|
|
if (bundle->radius.valid && bundle->radius.ip.s_addr != INADDR_NONE) {
|
|
/* We've got a radius IP - it overrides everything */
|
|
if (!ipcp_UseHisIPaddr(bundle, bundle->radius.ip))
|
|
return 0;
|
|
ipcp_Setup(&bundle->ncp.ipcp, bundle->radius.mask.s_addr);
|
|
/* Continue with ppp.secret in case we've got a new label */
|
|
}
|
|
#endif
|
|
|
|
fp = OpenSecret(SECRETFILE);
|
|
if (fp != NULL) {
|
|
again:
|
|
lineno = 0;
|
|
while (fgets(buff, sizeof buff, fp)) {
|
|
lineno++;
|
|
if (buff[0] == '#')
|
|
continue;
|
|
buff[strlen(buff) - 1] = '\0';
|
|
memset(vector, '\0', sizeof vector);
|
|
if ((n = MakeArgs(buff, vector, VECSIZE(vector), PARSE_REDUCE)) < 0)
|
|
log_Printf(LogWARN, "%s: %d: Invalid line\n", SECRETFILE, lineno);
|
|
if (n < 2)
|
|
continue;
|
|
if (strcmp(vector[0], name) == 0) {
|
|
CloseSecret(fp);
|
|
#ifndef NORADIUS
|
|
if (!bundle->radius.valid || bundle->radius.ip.s_addr == INADDR_NONE) {
|
|
#endif
|
|
if (n > 2 && *vector[2] && strcmp(vector[2], "*") &&
|
|
!ipcp_UseHisaddr(bundle, vector[2], 1))
|
|
return 0;
|
|
ipcp_Setup(&bundle->ncp.ipcp, INADDR_NONE);
|
|
#ifndef NORADIUS
|
|
}
|
|
#endif
|
|
if (n > 3 && *vector[3] && strcmp(vector[3], "*"))
|
|
bundle_SetLabel(bundle, vector[3]);
|
|
return 1; /* Valid */
|
|
}
|
|
}
|
|
|
|
if ((slash = strrchr(name, '\\')) != NULL && slash[1]) {
|
|
/* Look for the name without the leading domain */
|
|
name = slash + 1;
|
|
rewind(fp);
|
|
goto again;
|
|
}
|
|
|
|
CloseSecret(fp);
|
|
}
|
|
|
|
#ifndef NOPASSWDAUTH
|
|
/* Let 'em in anyway - they must have been in the passwd file */
|
|
ipcp_Setup(&bundle->ncp.ipcp, INADDR_NONE);
|
|
return 1;
|
|
#else
|
|
#ifndef NORADIUS
|
|
if (bundle->radius.valid)
|
|
return 1;
|
|
#endif
|
|
|
|
/* Disappeared from ppp.secret ??? */
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
int
|
|
auth_Validate(struct bundle *bundle, const char *name,
|
|
const char *key, struct physical *physical)
|
|
{
|
|
/* Used by PAP routines */
|
|
|
|
FILE *fp;
|
|
int n, lineno;
|
|
char *vector[5], buff[LINE_LEN];
|
|
const char *slash;
|
|
|
|
fp = OpenSecret(SECRETFILE);
|
|
again:
|
|
lineno = 0;
|
|
if (fp != NULL) {
|
|
while (fgets(buff, sizeof buff, fp)) {
|
|
lineno++;
|
|
if (buff[0] == '#')
|
|
continue;
|
|
buff[strlen(buff) - 1] = 0;
|
|
memset(vector, '\0', sizeof vector);
|
|
if ((n = MakeArgs(buff, vector, VECSIZE(vector), PARSE_REDUCE)) < 0)
|
|
log_Printf(LogWARN, "%s: %d: Invalid line\n", SECRETFILE, lineno);
|
|
if (n < 2)
|
|
continue;
|
|
if (strcmp(vector[0], name) == 0) {
|
|
CloseSecret(fp);
|
|
return auth_CheckPasswd(name, vector[1], key);
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((slash = strrchr(name, '\\')) != NULL && slash[1]) {
|
|
/* Look for the name without the leading domain */
|
|
name = slash + 1;
|
|
if (fp != NULL) {
|
|
rewind(fp);
|
|
goto again;
|
|
}
|
|
}
|
|
|
|
if (fp != NULL)
|
|
CloseSecret(fp);
|
|
|
|
#ifndef NOPASSWDAUTH
|
|
if (Enabled(bundle, OPT_PASSWDAUTH))
|
|
return auth_CheckPasswd(name, "*", key);
|
|
#endif
|
|
|
|
return 0; /* Invalid */
|
|
}
|
|
|
|
char *
|
|
auth_GetSecret(struct bundle *bundle, const char *name, int len,
|
|
struct physical *physical)
|
|
{
|
|
/* Used by CHAP routines */
|
|
|
|
FILE *fp;
|
|
int n, lineno;
|
|
char *vector[5];
|
|
const char *slash;
|
|
static char buff[LINE_LEN]; /* vector[] will point here when returned */
|
|
|
|
fp = OpenSecret(SECRETFILE);
|
|
if (fp == NULL)
|
|
return (NULL);
|
|
|
|
again:
|
|
lineno = 0;
|
|
while (fgets(buff, sizeof buff, fp)) {
|
|
lineno++;
|
|
if (buff[0] == '#')
|
|
continue;
|
|
n = strlen(buff) - 1;
|
|
if (buff[n] == '\n')
|
|
buff[n] = '\0'; /* Trim the '\n' */
|
|
memset(vector, '\0', sizeof vector);
|
|
if ((n = MakeArgs(buff, vector, VECSIZE(vector), PARSE_REDUCE)) < 0)
|
|
log_Printf(LogWARN, "%s: %d: Invalid line\n", SECRETFILE, lineno);
|
|
if (n < 2)
|
|
continue;
|
|
if (strlen(vector[0]) == len && strncmp(vector[0], name, len) == 0) {
|
|
CloseSecret(fp);
|
|
return vector[1];
|
|
}
|
|
}
|
|
|
|
if ((slash = strrchr(name, '\\')) != NULL && slash[1]) {
|
|
/* Go back and look for the name without the leading domain */
|
|
len -= slash - name + 1;
|
|
name = slash + 1;
|
|
rewind(fp);
|
|
goto again;
|
|
}
|
|
|
|
CloseSecret(fp);
|
|
return (NULL); /* Invalid */
|
|
}
|
|
|
|
static void
|
|
AuthTimeout(void *vauthp)
|
|
{
|
|
struct authinfo *authp = (struct authinfo *)vauthp;
|
|
|
|
timer_Stop(&authp->authtimer);
|
|
if (--authp->retry > 0) {
|
|
authp->id++;
|
|
(*authp->fn.req)(authp);
|
|
timer_Start(&authp->authtimer);
|
|
} else {
|
|
log_Printf(LogPHASE, "Auth: No response from server\n");
|
|
datalink_AuthNotOk(authp->physical->dl);
|
|
}
|
|
}
|
|
|
|
void
|
|
auth_Init(struct authinfo *authp, struct physical *p, auth_func req,
|
|
auth_func success, auth_func failure)
|
|
{
|
|
memset(authp, '\0', sizeof(struct authinfo));
|
|
authp->cfg.fsm.timeout = DEF_FSMRETRY;
|
|
authp->cfg.fsm.maxreq = DEF_FSMAUTHTRIES;
|
|
authp->cfg.fsm.maxtrm = 0; /* not used */
|
|
authp->fn.req = req;
|
|
authp->fn.success = success;
|
|
authp->fn.failure = failure;
|
|
authp->physical = p;
|
|
}
|
|
|
|
void
|
|
auth_StartReq(struct authinfo *authp)
|
|
{
|
|
timer_Stop(&authp->authtimer);
|
|
authp->authtimer.func = AuthTimeout;
|
|
authp->authtimer.name = "auth";
|
|
authp->authtimer.load = authp->cfg.fsm.timeout * SECTICKS;
|
|
authp->authtimer.arg = (void *)authp;
|
|
authp->retry = authp->cfg.fsm.maxreq;
|
|
authp->id = 1;
|
|
(*authp->fn.req)(authp);
|
|
timer_Start(&authp->authtimer);
|
|
}
|
|
|
|
void
|
|
auth_StopTimer(struct authinfo *authp)
|
|
{
|
|
timer_Stop(&authp->authtimer);
|
|
}
|
|
|
|
struct mbuf *
|
|
auth_ReadHeader(struct authinfo *authp, struct mbuf *bp)
|
|
{
|
|
int len;
|
|
|
|
len = m_length(bp);
|
|
if (len >= sizeof authp->in.hdr) {
|
|
bp = mbuf_Read(bp, (u_char *)&authp->in.hdr, sizeof authp->in.hdr);
|
|
if (len >= ntohs(authp->in.hdr.length))
|
|
return bp;
|
|
authp->in.hdr.length = htons(0);
|
|
log_Printf(LogWARN, "auth_ReadHeader: Short packet (%d > %d) !\n",
|
|
ntohs(authp->in.hdr.length), len);
|
|
} else {
|
|
authp->in.hdr.length = htons(0);
|
|
log_Printf(LogWARN, "auth_ReadHeader: Short packet header (%d > %d) !\n",
|
|
(int)(sizeof authp->in.hdr), len);
|
|
}
|
|
|
|
m_freem(bp);
|
|
return NULL;
|
|
}
|
|
|
|
struct mbuf *
|
|
auth_ReadName(struct authinfo *authp, struct mbuf *bp, int len)
|
|
{
|
|
if (len > sizeof authp->in.name - 1)
|
|
log_Printf(LogWARN, "auth_ReadName: Name too long (%d) !\n", len);
|
|
else {
|
|
int mlen = m_length(bp);
|
|
|
|
if (len > mlen)
|
|
log_Printf(LogWARN, "auth_ReadName: Short packet (%d > %d) !\n",
|
|
len, mlen);
|
|
else {
|
|
bp = mbuf_Read(bp, (u_char *)authp->in.name, len);
|
|
authp->in.name[len] = '\0';
|
|
return bp;
|
|
}
|
|
}
|
|
|
|
*authp->in.name = '\0';
|
|
m_freem(bp);
|
|
return NULL;
|
|
}
|