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#include <sys/socket.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
//#include <unistd.h>
#include <stdint.h>
#include "../tlv11.h" /* FIXME: .. */
#include "libradsec-base.h"
static int
_do_connect(int type,
const struct sockaddr *addr,
socklen_t addrlen)
{
int s;
s = socket(AF_INET, type, 0); /* FIXME: do AF_INET6 too */
if (s >= 0)
if (connect(s, addr, addrlen)) {
close(s);
s = -1;
}
return s;
}
static struct list *
_list_new(const struct rs_config *ctx)
{
struct list *list = rs_malloc(ctx, sizeof(struct list));
if (list)
memset(list, 0, sizeof(struct list));
return list;
}
static int
_list_push(const struct rs_config *ctx, /* FIXME: code duplicate, list.c */
struct list *list,
void *data)
{
struct list_node *node;
node = rs_malloc(ctx, sizeof(struct list_node));
if (!node)
return 0;
node->next = NULL;
node->data = data;
if (list->first)
list->last->next = node;
else
list->first = node;
list->last = node;
list->count++;
return 1;
}
static void
_list_destroy(const struct rs_config *ctx, /* FIXME: code dup */
struct list *list)
{
struct list_node *node, *next;
if (list) {
for (node = list->first; node; node = next) {
rs_free(ctx, node->data);
next = node->next;
rs_free(ctx, node);
}
free(list);
}
}
/* ------------------------------------------------------- */
int
rs_connect(const struct rs_config *conf,
const struct sockaddr *addr,
socklen_t addrlen)
{
switch (conf->conn_type)
{
case RS_CONN_TYPE_UDP:
return _do_connect(SOCK_DGRAM, addr, addrlen);
case RS_CONN_TYPE_TCP:
return _do_connect(SOCK_STREAM, addr, addrlen);
/* fall thru */
case RS_CONN_TYPE_TLS:
/* fall thru */
case RS_CONN_TYPE_DTLS:
/* fall thru */
default:
errno = ENOSYS;
return -1;
}
}
int
rs_disconnect( const struct rs_config *conf, int fd)
{
switch (conf->conn_type)
{
case RS_CONN_TYPE_UDP:
return close(fd);
case RS_CONN_TYPE_TCP:
shutdown(fd, SHUT_RDWR);
return close(fd);
case RS_CONN_TYPE_TLS:
/* fall thru */
case RS_CONN_TYPE_DTLS:
/* fall thru */
default:
errno = ENOSYS;
return -1;
}
}
struct rs_packet *
rs_packet_new(const struct rs_config *ctx,
const uint8_t buf[RS_HEADER_LEN],
size_t *count)
{
struct rs_packet *p = rs_malloc(ctx, sizeof(struct rs_packet));
if (p) {
p->attrs = _list_new(ctx);
if (p->attrs) {
p->code = buf[0];
p->id = buf[1];
if (count)
*count = (buf[2] << 8) + buf[3];
}
else
rs_packet_free(ctx, &p);
}
return p;
}
struct rs_packet *
rs_packet_parse(const struct rs_config *ctx,
struct rs_packet **packet,
const uint8_t *buf,
size_t buflen)
{
struct rs_packet *p = *packet;
struct tlv *tlv;
size_t i;
uint8_t atype, alen;
if (buflen < 16) {
errno = EPROTO;
rs_packet_free(ctx, &p);
return NULL;
}
i = 16;
while (i + 2 < buflen) {
atype = buf[i++];
alen = buf[i++];
if (alen < 2) {
#if DEBUG
fprintf(stderr,
"%s: DEBUG: attribute (type %d, len %d) has an invalid length\n",
__func__, atype, alen);
#endif
errno = EPROTO;
rs_packet_free(ctx, &p);
return NULL;
}
alen -= 2;
if (alen + i >= buflen) {
#if DEBUG
fprintf(stderr,
"%s: DEBUG: attribute (type %d, len %d) wouldn't fit packet\n",
__func__, atype, alen);
#endif
errno = EPROTO;
rs_packet_free(ctx, &p);
return NULL;
}
tlv = maketlv(atype, alen, (void *) (buf + i));
if (tlv)
_list_push(ctx, p->attrs, tlv);
else {
errno = ENOMEM;
rs_packet_free(ctx, &p);
}
i += alen;
}
memcpy(p->auth, buf, 16);
return p;
}
void
rs_packet_free(const struct rs_config *ctx,
struct rs_packet **packet)
{
_list_destroy(ctx, (*packet)->attrs);
rs_free(ctx, *packet);
*packet = NULL;
}
ssize_t
rs_packet_serialize(const struct rs_packet *packet,
uint8_t *buf,
size_t buflen)
{
struct list_node *ln;
size_t pktlen;
ssize_t i;
for (ln = list_first(packet->attrs), pktlen = 20; ln; ln = list_next(ln))
pktlen += ((struct rs_attribute *)(ln->data))->length;
if (pktlen > buflen)
return -(pktlen - buflen);
buf[0] = packet->code;
buf[1] = packet->id;
buf[2] = (pktlen & 0xff00) >> 8;
buf[3] = pktlen & 0xff;
memcpy(buf + 4, packet->auth, 16);
for (ln = list_first(packet->attrs), i = 20; ln; ln = list_next(ln)) {
struct rs_attribute *a = (struct rs_attribute *)(ln->data);
buf[i++] = a->type;
buf[i++] = a->length;
memcpy(buf + i, a->value, a->length - 2);
i += a->length - 2;
}
return i;
}
/* Local Variables: */
/* c-file-style: "stroustrup" */
/* End: */
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