/* Packet stream */
struct SilcPacketStreamStruct {
struct SilcPacketStreamStruct *next;
- SilcAtomic refcnt; /* Reference counter */
SilcPacketEngine engine; /* Packet engine */
SilcStream stream; /* Underlaying stream */
SilcMutex lock; /* Stream lock */
void *stream_context; /* Stream context */
SilcBufferStruct inbuf; /* In buffer */
SilcBufferStruct outbuf; /* Out buffer */
- SilcUInt32 send_psn; /* Sending sequence */
SilcCipher send_key[2]; /* Sending key */
SilcHmac send_hmac[2]; /* Sending HMAC */
- SilcUInt32 receive_psn; /* Receiving sequence */
SilcCipher receive_key[2]; /* Receiving key */
SilcHmac receive_hmac[2]; /* Receiving HMAC */
unsigned char *src_id; /* Source ID */
unsigned char *dst_id; /* Destination ID */
+ SilcUInt32 send_psn; /* Sending sequence */
+ SilcUInt32 receive_psn; /* Receiving sequence */
+ SilcAtomic8 refcnt; /* Reference counter */
unsigned int src_id_len : 6;
unsigned int src_id_type : 2;
unsigned int dst_id_len : 6;
ps->engine = engine;
ps->stream = stream;
- silc_atomic_init(&ps->refcnt, 1);
+ silc_atomic_init8(&ps->refcnt, 1);
/* Allocate buffers */
tmp = silc_malloc(SILC_PACKET_DEFAULT_SIZE);
if (!stream)
return;
- if (silc_atomic_get_int(&stream->refcnt) > 1) {
+ if (silc_atomic_get_int8(&stream->refcnt) > 1) {
stream->destroyed = TRUE;
return;
}
/* Destroy the underlaying stream */
silc_stream_destroy(stream->stream);
- silc_atomic_uninit(&stream->refcnt);
+ silc_atomic_uninit8(&stream->refcnt);
silc_dlist_uninit(stream->process);
silc_mutex_free(stream->lock);
silc_free(stream);
void silc_packet_stream_ref(SilcPacketStream stream)
{
- silc_atomic_add_int(&stream->refcnt, 1);
+ silc_atomic_add_int8(&stream->refcnt, 1);
}
/* Unreference packet stream */
void silc_packet_stream_unref(SilcPacketStream stream)
{
- if (silc_atomic_sub_int(&stream->refcnt, 1) == 0)
+ if (silc_atomic_sub_int8(&stream->refcnt, 1) == 0)
silc_packet_stream_destroy(stream);
}
return context;
}
+/* Change underlaying stream */
+
+void silc_packet_stream_set_stream(SilcPacketStream ps,
+ SilcStream stream,
+ SilcSchedule schedule)
+{
+ if (ps->stream)
+ silc_stream_set_notifier(ps->stream, schedule, NULL, NULL);
+ ps->stream = stream;
+ silc_stream_set_notifier(ps->stream, schedule, silc_packet_stream_io, ps);
+}
+
/* Return underlaying stream */
SilcStream silc_packet_stream_get_stream(SilcPacketStream stream)
silc_cipher_free(stream->receive_key[1]);
stream->receive_key[1] = stream->receive_key[0];
}
-
- stream->send_key[0] = send;
- stream->receive_key[0] = receive;
} else {
if (stream->send_key[0])
silc_cipher_free(stream->send_key[0]);
if (stream->send_key[1])
silc_cipher_free(stream->receive_key[0]);
-
- stream->send_key[0] = send;
- stream->receive_key[0] = receive;
}
+ stream->send_key[0] = send;
+ stream->receive_key[0] = receive;
+
silc_mutex_unlock(stream->lock);
}
silc_hmac_free(stream->receive_hmac[1]);
stream->receive_hmac[1] = stream->receive_hmac[0];
}
-
- stream->send_hmac[0] = send;
- stream->receive_hmac[0] = receive;
} else {
if (stream->send_hmac[0])
silc_hmac_free(stream->send_hmac[0]);
if (stream->receive_hmac[0])
silc_hmac_free(stream->receive_hmac[0]);
-
- stream->send_hmac[0] = send;
- stream->receive_hmac[0] = receive;
}
+ stream->send_hmac[0] = send;
+ stream->receive_hmac[0] = receive;
+
silc_mutex_unlock(stream->lock);
}
SILC_LOG_DEBUG(("Freeing packet %p", packet));
-#if defined(SILC_DEBUG)
/* Check for double free */
- assert(packet->stream != NULL);
-#endif /* SILC_DEBUG */
-
- silc_mutex_lock(stream->engine->lock);
+ SILC_ASSERT(packet->stream != NULL);
packet->stream = NULL;
packet->src_id = packet->dst_id = NULL;
silc_buffer_reset(&packet->buffer);
+ silc_mutex_lock(stream->engine->lock);
+
/* Put the packet back to freelist */
silc_list_add(stream->engine->packet_pool, packet);
if (silc_list_count(stream->engine->packet_pool) == 1)
int i, enclen, truelen, padlen, ivlen = 0, psnlen = 0;
SilcBufferStruct packet;
- SILC_LOG_DEBUG(("Sending packet %s (%d) flags %d, src %d dst %d,"
+ SILC_LOG_DEBUG(("Sending packet %s (%d) flags %d, src %d dst %d, "
"data len %d", silc_get_packet_name(type), stream->send_psn,
flags, src_id_type, dst_id_type, data_len));
/* Create the packet. This creates the SILC header, adds padding, and
the actual packet data. */
i = silc_buffer_format(&packet,
- SILC_STR_UI_XNSTRING(iv, ivlen),
- SILC_STR_UI_XNSTRING(psn, psnlen),
+ SILC_STR_DATA(iv, ivlen),
+ SILC_STR_DATA(psn, psnlen),
SILC_STR_UI_SHORT(truelen),
SILC_STR_UI_CHAR(flags),
SILC_STR_UI_CHAR(type),
SILC_STR_UI_CHAR(src_id_len),
SILC_STR_UI_CHAR(dst_id_len),
SILC_STR_UI_CHAR(src_id_type),
- SILC_STR_UI_XNSTRING(src_id, src_id_len),
+ SILC_STR_DATA(src_id, src_id_len),
SILC_STR_UI_CHAR(dst_id_type),
- SILC_STR_UI_XNSTRING(dst_id, dst_id_len),
- SILC_STR_UI_XNSTRING(tmppad, padlen),
- SILC_STR_UI_XNSTRING(data, data_len),
+ SILC_STR_DATA(dst_id, dst_id_len),
+ SILC_STR_DATA(tmppad, padlen),
+ SILC_STR_DATA(data, data_len),
SILC_STR_END);
if (i < 0) {
silc_mutex_unlock(stream->lock);
hmac ? hmac : stream->send_hmac[0]);
}
+/* Sends packet after formatting the arguments to buffer */
+
+SilcBool silc_packet_send_va(SilcPacketStream stream,
+ SilcPacketType type, SilcPacketFlags flags, ...)
+{
+ SilcBufferStruct buf;
+ SilcBool ret;
+ va_list va;
+
+ va_start(va, flags);
+
+ memset(&buf, 0, sizeof(buf));
+ if (silc_buffer_format_vp(&buf, va) < 0) {
+ va_end(va);
+ return FALSE;
+ }
+
+ ret = silc_packet_send(stream, type, flags, silc_buffer_data(&buf),
+ silc_buffer_len(&buf));
+
+ silc_buffer_purge(&buf);
+ va_end(va);
+
+ return ret;
+}
+
+/* Sends packet after formatting the arguments to buffer, extended routine */
+
+SilcBool silc_packet_send_va_ext(SilcPacketStream stream,
+ SilcPacketType type, SilcPacketFlags flags,
+ SilcIdType src_id_type, void *src_id,
+ SilcIdType dst_id_type, void *dst_id,
+ SilcCipher cipher, SilcHmac hmac, ...)
+{
+ SilcBufferStruct buf;
+ SilcBool ret;
+ va_list va;
+
+ va_start(va, hmac);
+
+ memset(&buf, 0, sizeof(buf));
+ if (silc_buffer_format_vp(&buf, va) < 0) {
+ va_end(va);
+ return FALSE;
+ }
+
+ ret = silc_packet_send_ext(stream, type, flags, src_id_type, src_id,
+ dst_id_type, dst_id, silc_buffer_data(&buf),
+ silc_buffer_len(&buf), cipher, hmac);
+
+ silc_buffer_purge(&buf);
+ va_end(va);
+
+ return TRUE;
+}
/***************************** Packet Receiving *****************************/
SilcBuffer buffer = &packet->buffer;
SilcUInt8 padlen = (SilcUInt8)buffer->data[4];
SilcUInt8 src_id_len, dst_id_len, src_id_type, dst_id_type;
- int len, ret;
+ int ret;
SILC_LOG_DEBUG(("Parsing incoming packet"));
/* Parse the buffer. This parses the SILC header of the packet. */
- len = silc_buffer_unformat(buffer,
+ ret = silc_buffer_unformat(buffer,
+ SILC_STR_ADVANCE,
SILC_STR_OFFSET(6),
SILC_STR_UI_CHAR(&src_id_len),
SILC_STR_UI_CHAR(&dst_id_len),
SILC_STR_UI_CHAR(&src_id_type),
SILC_STR_END);
- if (len == -1) {
+ if (ret == -1) {
SILC_LOG_ERROR(("Malformed packet header, packet dropped"));
return FALSE;
}
}
ret = silc_buffer_unformat(buffer,
- SILC_STR_OFFSET(len),
- SILC_STR_UI_XNSTRING(&packet->src_id,
- src_id_len),
+ SILC_STR_ADVANCE,
+ SILC_STR_DATA(&packet->src_id, src_id_len),
SILC_STR_UI_CHAR(&dst_id_type),
- SILC_STR_UI_XNSTRING(&packet->dst_id,
- dst_id_len),
+ SILC_STR_DATA(&packet->dst_id, dst_id_len),
SILC_STR_OFFSET(padlen),
SILC_STR_END);
if (ret == -1) {
packet->src_id_type = src_id_type;
packet->dst_id_type = dst_id_type;
- SILC_LOG_HEXDUMP(("Parsed packet, len %d", silc_buffer_len(buffer)),
- buffer->data, silc_buffer_len(buffer));
-
- /* Pull SILC header and padding from packet to get the data payload */
- silc_buffer_pull(buffer, SILC_PACKET_HEADER_LEN +
- packet->src_id_len + packet->dst_id_len + padlen);
+ SILC_LOG_HEXDUMP(("Parsed packet, len %d", silc_buffer_headlen(buffer) +
+ silc_buffer_len(buffer)), buffer->head,
+ silc_buffer_headlen(buffer) + silc_buffer_len(buffer));
SILC_LOG_DEBUG(("Incoming packet type: %d (%s)", packet->type,
silc_get_packet_name(packet->type)));
/* Parse the packet */
if (!silc_packet_parse(packet)) {
- silc_mutex_unlock(packet->stream->lock);
+ silc_mutex_unlock(stream->lock);
SILC_PACKET_CALLBACK_ERROR(stream, SILC_PACKET_ERR_MALFORMED);
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
silc_packet_free(packet);
return;
}
if (!stream->process) {
/* Send to default processor as no others exist */
SILC_LOG_DEBUG(("Dispatching packet to default callbacks"));
- silc_mutex_unlock(packet->stream->lock);
+ silc_mutex_unlock(stream->lock);
if (!stream->engine->callbacks->
packet_receive(stream->engine, stream, packet,
stream->engine->callback_context,
stream->stream_context))
silc_packet_free(packet);
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
return;
}
if (!default_sent && p->priority <= 0) {
SILC_LOG_DEBUG(("Dispatching packet to default callbacks"));
default_sent = TRUE;
- silc_mutex_unlock(packet->stream->lock);
+ silc_mutex_unlock(stream->lock);
if (stream->engine->callbacks->
packet_receive(stream->engine, stream, packet,
stream->engine->callback_context,
stream->stream_context)) {
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
return;
}
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
}
/* Send to processor */
if (!p->types) {
/* Send all packet types */
SILC_LOG_DEBUG(("Dispatching packet to %p callbacks", p->callbacks));
- silc_mutex_unlock(packet->stream->lock);
+ silc_mutex_unlock(stream->lock);
if (p->callbacks->packet_receive(stream->engine, stream, packet,
p->callback_context,
stream->stream_context)) {
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
return;
}
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
} else {
/* Send specific types */
for (pt = p->types; *pt; pt++) {
if (*pt != packet->type)
continue;
SILC_LOG_DEBUG(("Dispatching packet to %p callbacks", p->callbacks));
- silc_mutex_unlock(packet->stream->lock);
+ silc_mutex_unlock(stream->lock);
if (p->callbacks->packet_receive(stream->engine, stream, packet,
p->callback_context,
stream->stream_context)) {
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
return;
}
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
break;
}
}
if (!default_sent) {
/* Send to default processor as it has not been sent yet */
SILC_LOG_DEBUG(("Dispatching packet to default callbacks"));
- silc_mutex_unlock(packet->stream->lock);
+ silc_mutex_unlock(stream->lock);
if (stream->engine->callbacks->
packet_receive(stream->engine, stream, packet,
stream->engine->callback_context,
stream->stream_context)) {
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
return;
}
- silc_mutex_lock(packet->stream->lock);
+ silc_mutex_lock(stream->lock);
}
/* If we got here, no one wanted the packet, so drop it */
hmac = stream->receive_hmac[0];
if (silc_buffer_len(&stream->inbuf) <
- stream->iv_included ? SILC_PACKET_MIN_HEADER_LEN_IV :
- SILC_PACKET_MIN_HEADER_LEN) {
+ (stream->iv_included ? SILC_PACKET_MIN_HEADER_LEN_IV :
+ SILC_PACKET_MIN_HEADER_LEN)) {
SILC_LOG_DEBUG(("Partial packet in queue, waiting for the rest"));
return;
}
projects / silc.git / blobdiff