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/** @file libradsec-impl.h
@brief Libraray internal header file for libradsec. */
/* See the file COPYING for licensing information. */
#include <freeradius/libradius.h>
#include <event2/util.h>
#include <confuse.h>
#if defined(RS_ENABLE_TLS)
#include <openssl/ssl.h>
#endif
/* Constants. */
#define RS_HEADER_LEN 4
/* Data types. */
enum rs_cred_type {
RS_CRED_NONE = 0,
RS_CRED_TLS_PSK_RSA, /* RFC 4279. */
};
typedef unsigned int rs_cred_type_t;
#if defined (__cplusplus)
extern "C" {
#endif
struct rs_credentials {
enum rs_cred_type type;
char *identity;
char *secret;
};
struct rs_error {
int code;
char buf[1024];
};
/** Configuration object for a connection. */
struct rs_peer {
struct rs_connection *conn;
struct rs_realm *realm;
struct evutil_addrinfo *addr;
char *secret;
struct rs_peer *next;
};
/** Configuration object for a RADIUS realm. */
struct rs_realm {
char *name;
enum rs_conn_type type;
int timeout;
int retries;
char *cacertfile;
char *cacertpath;
char *certfile;
char *certkeyfile;
struct rs_peer *peers;
struct rs_realm *next;
};
/** Top configuration object. */
struct rs_config {
char *dictionary;
struct rs_realm *realms;
cfg_t *cfg;
};
struct rs_context {
struct rs_config *config;
struct rs_alloc_scheme alloc_scheme;
struct rs_error *err;
fr_randctx fr_randctx;
};
struct rs_connection {
struct rs_context *ctx;
struct rs_realm *realm; /* Owned by ctx. */
struct event_base *evb; /* Event base. */
struct event *tev; /* Timeout event. */
struct rs_credentials transport_credentials;
struct rs_conn_callbacks callbacks;
void *user_data;
struct rs_peer *peers;
struct rs_peer *active_peer;
struct rs_error *err;
struct timeval timeout;
char is_connecting; /* FIXME: replace with a single state member */
char is_connected; /* FIXME: replace with a single state member */
int fd; /* Socket. */
int tryagain; /* For server failover. */
int nextid; /* Next RADIUS packet identifier. */
/* TCP transport specifics. */
struct bufferevent *bev; /* Buffer event. */
/* UDP transport specifics. */
struct event *wev; /* Write event (for UDP). */
struct event *rev; /* Read event (for UDP). */
struct rs_packet *out_queue; /* Queue for outgoing UDP packets. */
#if defined(RS_ENABLE_TLS)
/* TLS specifics. */
SSL_CTX *tls_ctx;
SSL *tls_ssl;
#endif
};
enum rs_packet_flags {
rs_packet_hdr_read_flag,
rs_packet_received_flag,
rs_packet_sent_flag,
};
struct rs_packet {
struct rs_connection *conn;
unsigned int flags;
uint8_t hdr[RS_HEADER_LEN];
RADIUS_PACKET *rpkt; /* FreeRADIUS object. */
struct rs_packet *next; /* Used for UDP output queue. */
};
/* Nonpublic functions (in radsec.c -- FIXME: move?). */
struct rs_error *rs_resolv (struct evutil_addrinfo **addr,
rs_conn_type_t type,
const char *hostname,
const char *service);
#if defined (__cplusplus)
}
#endif
/* Convenience macros. */
#define rs_calloc(h, nmemb, size) \
(h->alloc_scheme.calloc ? h->alloc_scheme.calloc : calloc)(nmemb, size)
#define rs_malloc(h, size) \
(h->alloc_scheme.malloc ? h->alloc_scheme.malloc : malloc)(size)
#define rs_free(h, ptr) \
(h->alloc_scheme.free ? h->alloc_scheme.free : free)(ptr)
#define rs_realloc(h, realloc, ptr, size) \
(h->alloc_scheme.realloc ? h->alloc_scheme.realloc : realloc)(ptr, size)
#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
/* Local Variables: */
/* c-file-style: "stroustrup" */
/* End: */
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