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#include "triton/triton.h"
#include "ppp.h"
#include "ppp_lcp.h"
#include "ppp_fsm.h"
#include "ppp_auth.h"
static LIST_HEAD(drv_list);
int auth_register(struct auth_driver_t *new)
{
struct auth_driver_t *drv;
list_for_each_entry(drv,&drv_list,entry)
{
if (drv->type==new->type)
return -1;
}
list_add_tail(&new->entry,&drv_list);
return 0;
}
int auth_get_conf_req(struct ppp_layer_t *l, struct lcp_opt32_t *opt)
{
int i,n;
struct auth_driver_t *drv;
for(i=0; i<AUTH_MAX; i++)
{
if (l->auth[i] && l->options.lcp.neg_auth[i]>0)
goto cont;
}
for(i=0; i<AUTH_MAX; i++)
{
if (l->auth[i] && l->options.lcp.neg_auth[i]==0)
goto cont;
}
return -1;
cont:
list_for_each_entry(drv,&drv_list,entry)
{
if (drv->type==l->auth[i])
break;
}
n=drv->get_conf_req(drv,l,opt);
opt->val=l->auth[i];
opt->hdr.len=6+n;
return 0;
}
int auth_recv_conf_req(struct ppp_layer_t *l, struct lcp_opt_hdr_t *hdr)
{
struct lcp_opt32_t *opt=(struct lcp_opt32_t*)hdr;
struct auth_driver_t *drv;
int i;
for(i=0; i<AUTH_MAX; i++)
{
if (l->auth[i]==opt->val)
{
list_for_each_entry(drv,&drv_list,entry)
{
if (drv->type==l->auth[i])
{
if (drv->recv_conf_req(drv,l,opt))
return -1;
l->options.lcp.neg_auth[i]=1;
return 0;
}
}
return -1;
}
}
return -1;
}
int auth_recv_conf_rej(struct ppp_layer_t *l, struct lcp_opt_hdr_t *hdr)
{
struct lcp_opt32_t *opt=(struct lcp_opt32_t*)hdr;
int i;
for(i=0; i<AUTH_MAX; i++)
{
if (l->auth[i]==opt->val)
{
l->options.lcp.neg_auth[i]=-1;
break;
}
}
for(i=0; i<3; i++)
{
if (l->auth[i] && l->options.lcp.neg_auth[i]!=-1)
return 0;
}
return -1;
}
int auth_recv_conf_nak(struct ppp_layer_t *l, struct lcp_opt_hdr_t *hdr)
{
struct lcp_opt32_t *opt=(struct lcp_opt32_t*)hdr;
int i;
for(i=0; i<AUTH_MAX; i++)
{
if (l->auth[i]==opt->val)
{
l->options.lcp.neg_auth[i]=2;
return 0;
}
}
return -1;
}
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