/**
* Removes a the give peer from the peer array
*
* @param peer the peer to be removed
*/
static void
peer_list_remove (struct Peer *peer)
{
unsigned int orig_size;
uint32_t id;
if (GNUNET_NO == peer->is_remote)
GST_num_local_peers--;
GST_peer_list[peer->id] = NULL;
orig_size = GST_peer_list_size;
while (GST_peer_list_size >= LIST_GROW_STEP)
{
for (id = GST_peer_list_size - 1;
(id >= GST_peer_list_size - LIST_GROW_STEP) && (id != UINT32_MAX);
id--)
if (NULL != GST_peer_list[id])
break;
if (id != ((GST_peer_list_size - LIST_GROW_STEP) - 1))
break;
GST_peer_list_size -= LIST_GROW_STEP;
}
if (orig_size == GST_peer_list_size)
return;
GST_peer_list =
GNUNET_realloc (GST_peer_list,
sizeof (struct Peer *) * GST_peer_list_size);
}
/**
* Function to call to start a peer_create type operation once all
* queues the operation is part of declare that the
* operation can be activated.
*
* @param cls the closure from GNUNET_TESTBED_operation_create_()
*/
static void
opstart_peer_create (void *cls)
{
struct OperationContext *opc = cls;
struct PeerCreateData *data;
struct GNUNET_TESTBED_PeerCreateMessage *msg;
char *config;
char *xconfig;
size_t c_size;
size_t xc_size;
uint16_t msize;
GNUNET_assert (OP_PEER_CREATE == opc->type);
data = opc->data;
GNUNET_assert (NULL != data);
GNUNET_assert (NULL != data->peer);
opc->state = OPC_STATE_STARTED;
config = GNUNET_CONFIGURATION_serialize (data->cfg, &c_size);
xc_size = GNUNET_TESTBED_compress_config_ (config, c_size, &xconfig);
GNUNET_free (config);
msize = xc_size + sizeof (struct GNUNET_TESTBED_PeerCreateMessage);
msg = GNUNET_realloc (xconfig, msize);
memmove (&msg[1], msg, xc_size);
msg->header.size = htons (msize);
msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_CREATEPEER);
msg->operation_id = GNUNET_htonll (opc->id);
msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (data->peer->host));
msg->peer_id = htonl (data->peer->unique_id);
msg->config_size = htonl (c_size);
GNUNET_CONTAINER_DLL_insert_tail (opc->c->ocq_head, opc->c->ocq_tail, opc);
GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
}
/**
* Send data to be logged to the logger service. The data will be buffered and
* will be sent upon an explicit call to GNUNET_TESTBED_LOGGER_flush() or upon
* exceeding a threshold size.
*
* @param h the logger handle
* @param data the data to send;
* @param size how many bytes of data to send
*/
void
GNUNET_TESTBED_LOGGER_write (struct GNUNET_TESTBED_LOGGER_Handle *h,
const void *data, size_t size)
{
size_t fit_size;
GNUNET_assert (0 != size);
GNUNET_assert (NULL != data);
GNUNET_assert (size < (GNUNET_SERVER_MAX_MESSAGE_SIZE
- sizeof (struct GNUNET_MessageHeader)));
fit_size = sizeof (struct GNUNET_MessageHeader) + h->bs + size;
if ( GNUNET_SERVER_MAX_MESSAGE_SIZE < fit_size )
dispatch_buffer (h);
if (NULL == h->buf)
{
h->buf = GNUNET_malloc (size);
h->bs = size;
memcpy (h->buf, data, size);
return;
}
h->buf = GNUNET_realloc (h->buf, h->bs + size);
memcpy (h->buf + h->bs, data, size);
h->bs += size;
return;
}
/**
* Queue a message part for transmission.
*
* The message part is added to the current message buffer.
* When this buffer is full, it is added to the transmission queue.
*
* @param tmit
* Transmission handle.
* @param msg
* Message part, or NULL.
* @param tmit_now
* Transmit message now, or wait for buffer to fill up?
* #GNUNET_YES or #GNUNET_NO.
*/
static void
transmit_queue_insert (struct GNUNET_PSYC_TransmitHandle *tmit,
const struct GNUNET_MessageHeader *msg,
uint8_t tmit_now)
{
uint16_t size = (NULL != msg) ? ntohs (msg->size) : 0;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Queueing message part of type %u and size %u (tmit_now: %u)).\n",
NULL != msg ? ntohs (msg->type) : 0, size, tmit_now);
if (NULL != tmit->msg)
{
if (NULL == msg
|| GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD < tmit->msg->size + size)
{
/* End of message or buffer is full, add it to transmission queue
* and start with empty buffer */
tmit->msg->type = htons (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE);
tmit->msg->size = htons (tmit->msg->size);
GNUNET_CLIENT_MANAGER_transmit (tmit->client, tmit->msg);
tmit->msg = NULL;
tmit->acks_pending++;
}
else
{
/* Message fits in current buffer, append */
tmit->msg = GNUNET_realloc (tmit->msg, tmit->msg->size + size);
memcpy ((char *) tmit->msg + tmit->msg->size, msg, size);
tmit->msg->size += size;
}
}
if (NULL == tmit->msg && NULL != msg)
{
/* Empty buffer, copy over message. */
tmit->msg = GNUNET_malloc (sizeof (*tmit->msg) + size);
tmit->msg->size = sizeof (*tmit->msg) + size;
memcpy (&tmit->msg[1], msg, size);
}
if (NULL != tmit->msg
&& (GNUNET_YES == tmit_now
|| (GNUNET_MULTICAST_FRAGMENT_MAX_PAYLOAD
< tmit->msg->size + sizeof (struct GNUNET_MessageHeader))))
{
/* End of message or buffer is full, add it to transmission queue. */
tmit->msg->type = htons (GNUNET_MESSAGE_TYPE_PSYC_MESSAGE);
tmit->msg->size = htons (tmit->msg->size);
GNUNET_CLIENT_MANAGER_transmit (tmit->client, tmit->msg);
tmit->msg = NULL;
tmit->acks_pending++;
}
}
/**
* Send the buffered data to the service
*
* @param h the logger handle
*/
static void
dispatch_buffer (struct GNUNET_TESTBED_LOGGER_Handle *h)
{
struct GNUNET_MessageHeader *msg;
size_t msize;
msize = sizeof (struct GNUNET_MessageHeader) + h->bs;
msg = GNUNET_realloc (h->buf, msize);
h->buf = NULL;
memmove (&msg[1], msg, h->bs);
h->bs = 0;
msg->type = htons (GNUNET_MESSAGE_TYPE_TESTBED_LOGGER_MSG);
msg->size = htons (msize);
queue_message (h, msg);
}
/**
* Append a message to the transmission context.
* All messages in the context will be sent by
* the transmit_context_run method.
*
* @param tc context to use
* @param msg message to append
*/
void
GNUNET_SERVER_transmit_context_append_message (struct
GNUNET_SERVER_TransmitContext
*tc,
const struct GNUNET_MessageHeader
*msg)
{
struct GNUNET_MessageHeader *m;
uint16_t size;
size = ntohs (msg->size);
tc->buf = GNUNET_realloc (tc->buf, tc->total + size);
m = (struct GNUNET_MessageHeader *) &tc->buf[tc->total];
tc->total += size;
memcpy (m, msg, size);
}
/**
* Handler for GNUNET_MESSAGE_TYPE_TESTBED_GETSLAVECONFIG messages
*
* @param cls NULL
* @param client identification of the client
* @param message the actual message
*/
static void
handle_slave_get_config (void *cls, struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
struct GNUNET_TESTBED_SlaveGetConfigurationMessage *msg;
struct Slave *slave;
struct GNUNET_TESTBED_SlaveConfiguration *reply;
const struct GNUNET_CONFIGURATION_Handle *cfg;
char *config;
char *xconfig;
size_t config_size;
size_t xconfig_size;
size_t reply_size;
uint64_t op_id;
uint32_t slave_id;
msg = (struct GNUNET_TESTBED_SlaveGetConfigurationMessage *) message;
slave_id = ntohl (msg->slave_id);
op_id = GNUNET_ntohll (msg->operation_id);
if ((GST_slave_list_size <= slave_id) || (NULL == GST_slave_list[slave_id]))
{
/* FIXME: Add forwardings for this type of message here.. */
GST_send_operation_fail_msg (client, op_id, "Slave not found");
GNUNET_SERVER_receive_done (client, GNUNET_OK);
return;
}
slave = GST_slave_list[slave_id];
GNUNET_assert (NULL != (cfg = GNUNET_TESTBED_host_get_cfg_ (GST_host_list[slave->host_id])));
config = GNUNET_CONFIGURATION_serialize (cfg, &config_size);
xconfig_size =
GNUNET_TESTBED_compress_config_ (config, config_size, &xconfig);
GNUNET_free (config);
reply_size = xconfig_size + sizeof (struct GNUNET_TESTBED_SlaveConfiguration);
GNUNET_break (reply_size <= UINT16_MAX);
GNUNET_break (config_size <= UINT16_MAX);
reply = GNUNET_realloc (xconfig, reply_size);
(void) memmove (&reply[1], reply, xconfig_size);
reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_SLAVE_CONFIGURATION);
reply->header.size = htons ((uint16_t) reply_size);
reply->slave_id = msg->slave_id;
reply->operation_id = msg->operation_id;
reply->config_size = htons ((uint16_t) config_size);
GST_queue_message (client, &reply->header);
GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
/**
* Append a message to the transmission context.
* All messages in the context will be sent by
* the transmit_context_run method.
*
* @param tc context to use
* @param data what to append to the result message
* @param length length of data
* @param type type of the message
*/
void
GNUNET_SERVER_transmit_context_append_data (struct GNUNET_SERVER_TransmitContext
*tc, const void *data,
size_t length, uint16_t type)
{
struct GNUNET_MessageHeader *msg;
size_t size;
GNUNET_assert (length < GNUNET_SERVER_MAX_MESSAGE_SIZE);
size = length + sizeof (struct GNUNET_MessageHeader);
GNUNET_assert (size > length);
tc->buf = GNUNET_realloc (tc->buf, tc->total + size);
msg = (struct GNUNET_MessageHeader *) &tc->buf[tc->total];
tc->total += size;
msg->size = htons (size);
msg->type = htons (type);
memcpy (&msg[1], data, length);
}
/**
* Destroy a host handle. Must only be called once everything
* running on that host has been stopped.
*
* @param host handle to destroy
*/
void
GNUNET_TESTBED_host_destroy (struct GNUNET_TESTBED_Host *host)
{
struct RegisteredController *rc;
uint32_t id;
GNUNET_assert (host->id < host_list_size);
GNUNET_assert (host_list[host->id] == host);
host_list[host->id] = NULL;
/* clear registered controllers list */
for (rc = host->rc_head; NULL != rc; rc = host->rc_head)
{
GNUNET_CONTAINER_DLL_remove (host->rc_head, host->rc_tail, rc);
GNUNET_free (rc);
}
GNUNET_free_non_null ((char *) host->username);
GNUNET_free_non_null ((char *) host->hostname);
GNUNET_TESTBED_operation_queue_destroy_
(host->opq_parallel_overlay_connect_operations);
GNUNET_CONFIGURATION_destroy (host->cfg);
GNUNET_free (host);
while (host_list_size >= HOST_LIST_GROW_STEP)
{
for (id = host_list_size - 1; id > host_list_size - HOST_LIST_GROW_STEP;
id--)
if (NULL != host_list[id])
break;
if (id != host_list_size - HOST_LIST_GROW_STEP)
break;
if (NULL != host_list[id])
break;
host_list_size -= HOST_LIST_GROW_STEP;
}
host_list =
GNUNET_realloc (host_list,
sizeof (struct GNUNET_TESTBED_Host *) * host_list_size);
}
static int
check ()
{
#define MAX_TESTVAL 1024
char *ptrs[MAX_TESTVAL];
int i;
int j;
int k;
unsigned int ui;
/* GNUNET_malloc/GNUNET_free test */
k = 352; /* random start value */
for (i = 1; i < MAX_TESTVAL; i++)
{
ptrs[i] = GNUNET_malloc (i);
for (j = 0; j < i; j++)
ptrs[i][j] = k++;
}
for (i = MAX_TESTVAL - 1; i >= 1; i--)
{
for (j = i - 1; j >= 0; j--)
if (ptrs[i][j] != (char) --k)
return 1;
GNUNET_free (ptrs[i]);
}
/* GNUNET_free_non_null test */
GNUNET_free_non_null (NULL);
GNUNET_free_non_null (GNUNET_malloc (4));
/* GNUNET_strdup tests */
ptrs[0] = GNUNET_strdup ("bar");
if (0 != strcmp (ptrs[0], "bar"))
return 3;
/* now realloc */
ptrs[0] = GNUNET_realloc (ptrs[0], 12);
strcpy (ptrs[0], "Hello World");
GNUNET_free (ptrs[0]);
GNUNET_asprintf (&ptrs[0], "%s %s", "Hello", "World");
GNUNET_assert (strlen (ptrs[0]) == 11);
GNUNET_free (ptrs[0]);
/* GNUNET_array_grow tests */
ptrs[0] = NULL;
ui = 0;
GNUNET_array_grow (ptrs[0], ui, 42);
if (ui != 42)
return 4;
GNUNET_array_grow (ptrs[0], ui, 22);
if (ui != 22)
return 5;
for (j = 0; j < 22; j++)
ptrs[0][j] = j;
GNUNET_array_grow (ptrs[0], ui, 32);
for (j = 0; j < 22; j++)
if (ptrs[0][j] != j)
return 6;
for (j = 22; j < 32; j++)
if (ptrs[0][j] != 0)
return 7;
GNUNET_array_grow (ptrs[0], ui, 0);
if (i != 0)
return 8;
if (ptrs[0] != NULL)
return 9;
return 0;
}
/**
* We are ready to transmit (or got a timeout).
*
* @param cls our connection handle
* @param tc task context describing why we are here
*/
static void
transmit_ready (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_CONNECTION_Handle *connection = cls;
GNUNET_CONNECTION_TransmitReadyNotify notify;
ssize_t ret;
size_t have;
LOG (GNUNET_ERROR_TYPE_DEBUG, "transmit_ready running (%p).\n", connection);
GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != connection->write_task);
connection->write_task = GNUNET_SCHEDULER_NO_TASK;
GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == connection->nth.timeout_task);
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
{
if (NULL != connection->sock)
goto SCHEDULE_WRITE; /* ignore shutdown, go again immediately */
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Transmit to `%s' fails, shutdown happened (%p).\n",
GNUNET_a2s (connection->addr, connection->addrlen), connection);
notify = connection->nth.notify_ready;
if (NULL != notify)
{
connection->nth.notify_ready = NULL;
notify (connection->nth.notify_ready_cls, 0, NULL);
}
return;
}
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Transmit to `%s' fails, time out reached (%p).\n",
GNUNET_a2s (connection->addr, connection->addrlen), connection);
notify = connection->nth.notify_ready;
GNUNET_assert (NULL != notify);
connection->nth.notify_ready = NULL;
notify (connection->nth.notify_ready_cls, 0, NULL);
return;
}
GNUNET_assert (NULL != connection->sock);
if (NULL == tc->write_ready)
{
/* special circumstances (in particular, PREREQ_DONE after
* connect): not yet ready to write, but no "fatal" error either.
* Hence retry. */
goto SCHEDULE_WRITE;
}
if (!GNUNET_NETWORK_fdset_isset (tc->write_ready, connection->sock))
{
GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == connection->write_task);
/* special circumstances (in particular, shutdown): not yet ready
* to write, but no "fatal" error either. Hence retry. */
goto SCHEDULE_WRITE;
}
GNUNET_assert (connection->write_buffer_off >= connection->write_buffer_pos);
if ((NULL != connection->nth.notify_ready) &&
(connection->write_buffer_size < connection->nth.notify_size))
{
connection->write_buffer =
GNUNET_realloc (connection->write_buffer, connection->nth.notify_size);
connection->write_buffer_size = connection->nth.notify_size;
}
process_notify (connection);
have = connection->write_buffer_off - connection->write_buffer_pos;
if (0 == have)
{
/* no data ready for writing, terminate write loop */
return;
}
GNUNET_assert (have <= connection->write_buffer_size);
GNUNET_assert (have + connection->write_buffer_pos <= connection->write_buffer_size);
GNUNET_assert (connection->write_buffer_pos <= connection->write_buffer_size);
RETRY:
ret =
GNUNET_NETWORK_socket_send (connection->sock,
&connection->write_buffer[connection->write_buffer_pos],
have);
if (-1 == ret)
{
if (EINTR == errno)
goto RETRY;
if (GNUNET_SCHEDULER_NO_TASK != connection->write_task)
{
GNUNET_SCHEDULER_cancel (connection->write_task);
connection->write_task = GNUNET_SCHEDULER_NO_TASK;
}
signal_transmit_error (connection, errno);
return;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Connection transmitted %u/%u bytes to `%s' (%p)\n",
(unsigned int) ret, have, GNUNET_a2s (connection->addr, connection->addrlen), connection);
connection->write_buffer_pos += ret;
if (connection->write_buffer_pos == connection->write_buffer_off)
{
/* transmitted all pending data */
connection->write_buffer_pos = 0;
connection->write_buffer_off = 0;
}
if ((0 == connection->write_buffer_off) && (NULL == connection->nth.notify_ready))
return; /* all data sent! */
/* not done writing, schedule more */
SCHEDULE_WRITE:
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Re-scheduling transmit_ready (more to do) (%p).\n", connection);
have = connection->write_buffer_off - connection->write_buffer_pos;
GNUNET_assert ((NULL != connection->nth.notify_ready) || (have > 0));
if (GNUNET_SCHEDULER_NO_TASK == connection->write_task)
connection->write_task =
GNUNET_SCHEDULER_add_write_net ((connection->nth.notify_ready ==
NULL) ? GNUNET_TIME_UNIT_FOREVER_REL :
GNUNET_TIME_absolute_get_remaining
(connection->nth.transmit_timeout),
connection->sock, &transmit_ready, connection);
}
/**
* Add incoming data to the receive buffer and call the
* callback for all complete messages.
*
* @param mst tokenizer to use
* @param client_identity ID of client for which this is a buffer
* @param buf input data to add
* @param size number of bytes in buf
* @param purge should any excess bytes in the buffer be discarded
* (i.e. for packet-based services like UDP)
* @param one_shot only call callback once, keep rest of message in buffer
* @return GNUNET_OK if we are done processing (need more data)
* GNUNET_NO if one_shot was set and we have another message ready
* GNUNET_SYSERR if the data stream is corrupt
*/
int
GNUNET_SERVER_mst_receive (struct GNUNET_SERVER_MessageStreamTokenizer *mst,
void *client_identity, const char *buf, size_t size,
int purge, int one_shot)
{
const struct GNUNET_MessageHeader *hdr;
size_t delta;
uint16_t want;
char *ibuf;
int need_align;
unsigned long offset;
int ret;
GNUNET_assert (mst->off <= mst->pos);
GNUNET_assert (mst->pos <= mst->curr_buf);
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Server-mst receives %u bytes with %u bytes already in private buffer\n",
(unsigned int) size, (unsigned int) (mst->pos - mst->off));
ret = GNUNET_OK;
ibuf = (char *) mst->hdr;
while (mst->pos > 0)
{
do_align:
GNUNET_assert (mst->pos >= mst->off);
if ((mst->curr_buf - mst->off < sizeof (struct GNUNET_MessageHeader)) ||
(0 != (mst->off % ALIGN_FACTOR)))
{
/* need to align or need more space */
mst->pos -= mst->off;
memmove (ibuf, &ibuf[mst->off], mst->pos);
mst->off = 0;
}
if (mst->pos - mst->off < sizeof (struct GNUNET_MessageHeader))
{
delta =
GNUNET_MIN (sizeof (struct GNUNET_MessageHeader) -
(mst->pos - mst->off), size);
memcpy (&ibuf[mst->pos], buf, delta);
mst->pos += delta;
buf += delta;
size -= delta;
}
if (mst->pos - mst->off < sizeof (struct GNUNET_MessageHeader))
{
if (purge)
{
mst->off = 0;
mst->pos = 0;
}
return GNUNET_OK;
}
hdr = (const struct GNUNET_MessageHeader *) &ibuf[mst->off];
want = ntohs (hdr->size);
if (want < sizeof (struct GNUNET_MessageHeader))
{
GNUNET_break_op (0);
return GNUNET_SYSERR;
}
if ( (mst->curr_buf - mst->off < want) &&
(mst->off > 0) )
{
/* can get more space by moving */
mst->pos -= mst->off;
memmove (ibuf, &ibuf[mst->off], mst->pos);
mst->off = 0;
}
if (mst->curr_buf < want)
{
/* need to get more space by growing buffer */
GNUNET_assert (0 == mst->off);
mst->hdr = GNUNET_realloc (mst->hdr, want);
ibuf = (char *) mst->hdr;
mst->curr_buf = want;
}
hdr = (const struct GNUNET_MessageHeader *) &ibuf[mst->off];
if (mst->pos - mst->off < want)
{
delta = GNUNET_MIN (want - (mst->pos - mst->off), size);
GNUNET_assert (mst->pos + delta <= mst->curr_buf);
memcpy (&ibuf[mst->pos], buf, delta);
mst->pos += delta;
buf += delta;
size -= delta;
}
if (mst->pos - mst->off < want)
{
if (purge)
{
mst->off = 0;
mst->pos = 0;
}
return GNUNET_OK;
}
if (one_shot == GNUNET_SYSERR)
{
/* cannot call callback again, but return value saying that
* we have another full message in the buffer */
ret = GNUNET_NO;
goto copy;
}
if (one_shot == GNUNET_YES)
one_shot = GNUNET_SYSERR;
mst->off += want;
if (GNUNET_SYSERR == mst->cb (mst->cb_cls, client_identity, hdr))
return GNUNET_SYSERR;
if (mst->off == mst->pos)
{
/* reset to beginning of buffer, it's free right now! */
mst->off = 0;
mst->pos = 0;
}
}
GNUNET_assert (0 == mst->pos);
while (size > 0)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Server-mst has %u bytes left in inbound buffer\n",
(unsigned int) size);
if (size < sizeof (struct GNUNET_MessageHeader))
break;
offset = (unsigned long) buf;
need_align = (0 != (offset % ALIGN_FACTOR)) ? GNUNET_YES : GNUNET_NO;
if (GNUNET_NO == need_align)
{
/* can try to do zero-copy and process directly from original buffer */
hdr = (const struct GNUNET_MessageHeader *) buf;
want = ntohs (hdr->size);
if (want < sizeof (struct GNUNET_MessageHeader))
{
GNUNET_break_op (0);
mst->off = 0;
return GNUNET_SYSERR;
}
if (size < want)
break; /* or not: buffer incomplete, so copy to private buffer... */
if (one_shot == GNUNET_SYSERR)
{
/* cannot call callback again, but return value saying that
* we have another full message in the buffer */
ret = GNUNET_NO;
goto copy;
}
if (one_shot == GNUNET_YES)
one_shot = GNUNET_SYSERR;
if (GNUNET_SYSERR == mst->cb (mst->cb_cls, client_identity, hdr))
return GNUNET_SYSERR;
buf += want;
size -= want;
}
else
{
/* need to copy to private buffer to align;
* yes, we go a bit more spagetti than usual here */
goto do_align;
}
}
copy:
if ((size > 0) && (!purge))
{
if (size + mst->pos > mst->curr_buf)
{
mst->hdr = GNUNET_realloc (mst->hdr, size + mst->pos);
ibuf = (char *) mst->hdr;
mst->curr_buf = size + mst->pos;
}
GNUNET_assert (size + mst->pos <= mst->curr_buf);
memcpy (&ibuf[mst->pos], buf, size);
mst->pos += size;
}
if (purge)
{
mst->off = 0;
mst->pos = 0;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Server-mst leaves %u bytes in private buffer\n",
(unsigned int) (mst->pos - mst->off));
return ret;
}