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/*
* Copyright (C) 2006-2008 Stig Venaas <venaas@uninett.no>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#include "tlv11.h"
#include "radmsg.h"
#define DEBUG_LEVEL 3
#define CONFIG_MAIN "/etc/radsecproxy.conf"
/* MAX_REQUESTS must be 256 due to Radius' 8 bit ID field */
#define MAX_REQUESTS 256
#define REQUEST_RETRY_INTERVAL 5
#define REQUEST_RETRY_COUNT 2
#define DUPLICATE_INTERVAL REQUEST_RETRY_INTERVAL * REQUEST_RETRY_COUNT
#define MAX_CERT_DEPTH 5
#define STATUS_SERVER_PERIOD 25
#define IDLE_TIMEOUT 300
#define RAD_UDP 0
#define RAD_TLS 1
#define RAD_TCP 2
#define RAD_DTLS 3
struct options {
char **listenudp;
char **listentcp;
char **listentls;
char **listendtls;
char **listenaccudp;
char *sourceudp;
char *sourcetcp;
char *sourcetls;
char *sourcedtls;
char *logdestination;
uint8_t loglevel;
uint8_t loopprevention;
};
struct request {
struct timeval created;
uint8_t refcount;
uint8_t *buf, *replybuf;
struct radmsg *msg;
struct client *from;
char *origusername;
char origauth[16];
uint8_t origid;
int udpsock; /* only for UDP */
uint16_t udpport; /* only for UDP */
};
/* requests that our client will send */
struct rqout {
pthread_mutex_t *lock;
struct request *rq;
uint8_t tries;
struct timeval expiry;
};
struct queue {
struct list *entries;
pthread_mutex_t mutex;
pthread_cond_t cond;
};
struct clsrvconf {
char *name;
uint8_t type; /* RAD_UDP/RAD_TLS/RAD_TCP */
const struct protodefs *pdef;
char *host;
char *port;
char *secret;
char *tls;
char *matchcertattr;
regex_t *certcnregex;
regex_t *certuriregex;
char *confrewritein;
char *confrewriteout;
char *confrewriteusername;
struct modattr *rewriteusername;
char *dynamiclookupcommand;
uint8_t statusserver;
uint8_t retryinterval;
uint8_t retrycount;
uint8_t dupinterval;
uint8_t certnamecheck;
SSL_CTX *ssl_ctx;
struct rewrite *rewritein;
struct rewrite *rewriteout;
struct addrinfo *addrinfo;
uint8_t prefixlen;
pthread_mutex_t *lock; /* only used for updating clients so far */
struct list *clients;
struct server *servers;
};
struct client {
struct clsrvconf *conf;
int sock; /* for tcp/dtls */
SSL *ssl;
pthread_mutex_t lock; /* used for updating rqs */
struct request *rqs[MAX_REQUESTS];
struct queue *replyq;
struct queue *rbios; /* for dtls */
struct sockaddr *addr;
};
struct server {
struct clsrvconf *conf;
int sock;
SSL *ssl;
pthread_mutex_t lock;
pthread_t clientth;
uint8_t clientrdgone;
struct timeval lastconnecttry;
struct timeval lastreply;
uint8_t connectionok;
uint8_t lostrqs;
char *dynamiclookuparg;
int nextid;
struct timeval lastrcv;
struct rqout *requests;
uint8_t newrq;
pthread_mutex_t newrq_mutex;
pthread_cond_t newrq_cond;
struct queue *rbios; /* for dtls */
};
struct realm {
char *name;
char *message;
uint8_t accresp;
regex_t regex;
pthread_mutex_t subrealms_mutex;
struct list *subrealms;
struct list *srvconfs;
struct list *accsrvconfs;
};
struct tls {
char *name;
char *cacertfile;
char *cacertpath;
char *certfile;
char *certkeyfile;
char *certkeypwd;
uint8_t crlcheck;
SSL_CTX *tlsctx;
SSL_CTX *dtlsctx;
};
struct modattr {
uint8_t t;
char *replacement;
regex_t *regex;
};
struct rewrite {
uint8_t *removeattrs;
uint32_t *removevendorattrs;
struct list *addattrs;
struct list *modattrs;
};
struct protodefs {
char *name;
char *secretdefault;
uint8_t socktype;
char *portdefault;
uint8_t retrycountdefault;
uint8_t retrycountmax;
uint8_t retryintervaldefault;
uint8_t retryintervalmax;
uint8_t duplicateintervaldefault;
void *(*listener)(void*);
char **srcaddrport;
int (*connecter)(struct server *, struct timeval *, int, char *);
void *(*clientconnreader)(void*);
int (*clientradput)(struct server *, unsigned char *);
void (*addclient)(struct client *);
void (*addserverextra)(struct clsrvconf *);
void (*initextra)();
};
#define RADLEN(x) ntohs(((uint16_t *)(x))[1])
#define ATTRTYPE(x) ((x)[0])
#define ATTRLEN(x) ((x)[1])
#define ATTRVAL(x) ((x) + 2)
#define ATTRVALLEN(x) ((x)[1] - 2)
struct addrinfo *getsrcprotores(uint8_t type);
struct clsrvconf *find_clconf(uint8_t type, struct sockaddr *addr, struct list_node **cur);
struct clsrvconf *find_srvconf(uint8_t type, struct sockaddr *addr, struct list_node **cur);
struct clsrvconf *find_clconf_type(uint8_t type, struct list_node **cur);
struct client *addclient(struct clsrvconf *conf, uint8_t lock);
void removeclient(struct client *client);
void removeclientrqs(struct client *client);
struct queue *newqueue();
void removequeue(struct queue *q);
void freebios(struct queue *q);
struct request *newrequest();
void freerq(struct request *rq);
int radsrv(struct request *rq);
X509 *verifytlscert(SSL *ssl);
int verifyconfcert(X509 *cert, struct clsrvconf *conf);
void replyh(struct server *server, unsigned char *buf);
int connecttcp(struct addrinfo *addrinfo, struct addrinfo *src);
int bindtoaddr(struct addrinfo *addrinfo, int family, int reuse, int v6only);
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