SilcBuffer silc_public_key_payload_encode(SilcPublicKey public_key)
{
SilcBuffer buffer;
unsigned char *pk;
SilcUInt32 pk_len;
SilcPKCSType type;
if (!public_key)
return NULL;
type = silc_pkcs_get_type(public_key);
pk = silc_pkcs_public_key_encode(public_key, &pk_len);
if (!pk)
return NULL;
buffer = silc_buffer_alloc_size(4 + pk_len);
if (!buffer) {
silc_free(pk);
return NULL;
}
if (silc_buffer_format(buffer,
SILC_STR_UI_SHORT(pk_len),
SILC_STR_UI_SHORT(type),
SILC_STR_DATA(pk, pk_len),
SILC_STR_END) < 0) {
silc_buffer_free(buffer);
silc_free(pk);
return NULL;
}
silc_free(pk);
return buffer;
}
SilcBool silc_public_key_payload_decode(unsigned char *data,
SilcUInt32 data_len,
SilcPublicKey *public_key)
{
SilcBufferStruct buf;
SilcUInt16 pk_len, pk_type;
unsigned char *pk;
int ret;
if (!public_key)
return FALSE;
silc_buffer_set(&buf, data, data_len);
ret = silc_buffer_unformat(&buf,
SILC_STR_ADVANCE,
SILC_STR_UI_SHORT(&pk_len),
SILC_STR_UI_SHORT(&pk_type),
SILC_STR_END);
if (ret < 0 || pk_len > data_len - 4)
return FALSE;
if (pk_type < SILC_PKCS_SILC || pk_type > SILC_PKCS_SPKI)
return FALSE;
ret = silc_buffer_unformat(&buf,
SILC_STR_DATA(&pk, pk_len),
SILC_STR_END);
if (ret < 0)
return FALSE;
return silc_pkcs_public_key_alloc((SilcPKCSType)pk_type,
pk, pk_len, public_key);
}
SilcBuffer silc_notify_payload_encode_args(SilcNotifyType type,
SilcUInt32 argc,
SilcBuffer args)
{
SilcBuffer buffer;
SilcUInt32 len;
len = 5 + (args ? silc_buffer_len(args) : 0);
buffer = silc_buffer_alloc_size(len);
if (!buffer)
return NULL;
silc_buffer_format(buffer,
SILC_STR_UI_SHORT(type),
SILC_STR_UI_SHORT(len),
SILC_STR_UI_CHAR(argc),
SILC_STR_END);
if (args)
silc_buffer_format(buffer,
SILC_STR_OFFSET(5),
SILC_STR_DATA(args->data, silc_buffer_len(args)),
SILC_STR_END);
return buffer;
}
void silcpurple_wb_send(PurpleWhiteboard *wb, GList *draw_list)
{
SilcPurpleWb wbs = wb->proto_data;
SilcBuffer packet;
GList *list;
int len;
PurpleConnection *gc;
SilcPurple sg;
g_return_if_fail(draw_list);
gc = purple_account_get_connection(wb->account);
g_return_if_fail(gc);
sg = gc->proto_data;
g_return_if_fail(sg);
len = SILCPURPLE_WB_HEADER;
for (list = draw_list; list; list = list->next)
len += 4;
packet = silc_buffer_alloc_size(len);
if (!packet)
return;
/* Assmeble packet */
silc_buffer_format(packet,
SILC_STR_UI32_STRING(SILCPURPLE_WB_MIME),
SILC_STR_UI_CHAR(SILCPURPLE_WB_DRAW),
SILC_STR_UI_SHORT(wbs->width),
SILC_STR_UI_SHORT(wbs->height),
SILC_STR_UI_INT(wbs->brush_color),
SILC_STR_UI_SHORT(wbs->brush_size),
SILC_STR_END);
silc_buffer_pull(packet, SILCPURPLE_WB_HEADER);
for (list = draw_list; list; list = list->next) {
silc_buffer_format(packet,
SILC_STR_UI_INT(GPOINTER_TO_INT(list->data)),
SILC_STR_END);
silc_buffer_pull(packet, 4);
}
/* Send the message */
if (wbs->type == 0) {
/* Private message */
silc_client_send_private_message(sg->client, sg->conn,
wbs->u.client,
SILC_MESSAGE_FLAG_DATA, NULL,
packet->head, len);
} else if (wbs->type == 1) {
/* Channel message. Channel private keys are not supported. */
silc_client_send_channel_message(sg->client, sg->conn,
wbs->u.channel, NULL,
SILC_MESSAGE_FLAG_DATA, NULL,
packet->head, len);
}
silc_buffer_free(packet);
}
static void
silcpurple_wb_parse(SilcPurpleWb wbs, PurpleWhiteboard *wb,
unsigned char *message, SilcUInt32 message_len)
{
SilcUInt8 command;
SilcUInt16 width, height, brush_size;
SilcUInt32 brush_color, x, y, dx, dy;
SilcBufferStruct buf;
int ret;
/* Parse the packet */
silc_buffer_set(&buf, message, message_len);
ret = silc_buffer_unformat(&buf,
SILC_STR_UI_CHAR(&command),
SILC_STR_UI_SHORT(&width),
SILC_STR_UI_SHORT(&height),
SILC_STR_UI_INT(&brush_color),
SILC_STR_UI_SHORT(&brush_size),
SILC_STR_END);
if (ret < 0)
return;
silc_buffer_pull(&buf, ret);
/* Update whiteboard if its dimensions changed */
if (width != wbs->width || height != wbs->height)
silcpurple_wb_set_dimensions(wb, height, width);
if (command == SILCPURPLE_WB_DRAW) {
/* Parse data and draw it */
ret = silc_buffer_unformat(&buf,
SILC_STR_UI_INT(&dx),
SILC_STR_UI_INT(&dy),
SILC_STR_END);
if (ret < 0)
return;
silc_buffer_pull(&buf, 8);
x = dx;
y = dy;
while (silc_buffer_len(&buf) > 0) {
ret = silc_buffer_unformat(&buf,
SILC_STR_UI_INT(&dx),
SILC_STR_UI_INT(&dy),
SILC_STR_END);
if (ret < 0)
return;
silc_buffer_pull(&buf, 8);
purple_whiteboard_draw_line(wb, x, y, x + dx, y + dy,
brush_color, brush_size);
x += dx;
y += dy;
}
}
if (command == SILCPURPLE_WB_CLEAR)
purple_whiteboard_clear(wb);
}
SilcCommandPayload silc_command_payload_parse(const unsigned char *payload,
SilcUInt32 payload_len)
{
SilcBufferStruct buffer;
SilcCommandPayload newp;
unsigned char args_num;
SilcUInt16 p_len;
int ret;
SILC_LOG_DEBUG(("Parsing command payload"));
silc_buffer_set(&buffer, (unsigned char *)payload, payload_len);
newp = silc_calloc(1, sizeof(*newp));
if (!newp)
return NULL;
/* Parse the Command Payload */
ret = silc_buffer_unformat(&buffer,
SILC_STR_UI_SHORT(&p_len),
SILC_STR_UI_CHAR(&newp->cmd),
SILC_STR_UI_CHAR(&args_num),
SILC_STR_UI_SHORT(&newp->ident),
SILC_STR_END);
if (ret == -1) {
SILC_LOG_ERROR(("Incorrect command payload in packet"));
silc_free(newp);
return NULL;
}
if (p_len != silc_buffer_len(&buffer)) {
SILC_LOG_ERROR(("Incorrect command payload in packet"));
silc_free(newp);
return NULL;
}
if (newp->cmd == 0) {
SILC_LOG_ERROR(("Incorrect command type in command payload"));
silc_free(newp);
return NULL;
}
silc_buffer_pull(&buffer, SILC_COMMAND_PAYLOAD_LEN);
if (args_num) {
newp->args = silc_argument_payload_parse(buffer.data,
silc_buffer_len(&buffer),
args_num);
if (!newp->args) {
silc_free(newp);
return NULL;
}
}
silc_buffer_push(&buffer, SILC_COMMAND_PAYLOAD_LEN);
return newp;
}
SilcBuffer silc_attribute_payload_encode_data(SilcBuffer attrs,
SilcAttribute attribute,
SilcAttributeFlags flags,
const unsigned char *data,
SilcUInt32 data_len)
{
SilcBuffer buffer = attrs;
SilcUInt32 len;
len = 4 + (SilcUInt16)data_len;
buffer = silc_buffer_realloc(buffer,
(buffer ? silc_buffer_truelen(buffer) +
len : len));
if (!buffer)
return NULL;
silc_buffer_pull(buffer, silc_buffer_len(buffer));
silc_buffer_pull_tail(buffer, len);
silc_buffer_format(buffer,
SILC_STR_UI_CHAR(attribute),
SILC_STR_UI_CHAR(flags),
SILC_STR_UI_SHORT((SilcUInt16)data_len),
SILC_STR_UI_XNSTRING(data, (SilcUInt16)data_len),
SILC_STR_END);
silc_buffer_push(buffer, buffer->data - buffer->head);
return buffer;
}
SilcBuffer silc_command_payload_encode(SilcCommand cmd,
SilcUInt32 argc,
unsigned char **argv,
SilcUInt32 *argv_lens,
SilcUInt32 *argv_types,
SilcUInt16 ident)
{
SilcBuffer buffer;
SilcBuffer args = NULL;
SilcUInt32 len = 0;
SILC_LOG_DEBUG(("Encoding command payload"));
if (argc) {
args = silc_argument_payload_encode(argc, argv, argv_lens, argv_types);
if (!args)
return NULL;
len = silc_buffer_len(args);
}
len += SILC_COMMAND_PAYLOAD_LEN;
buffer = silc_buffer_alloc_size(len);
if (!buffer)
return NULL;
/* Create Command payload */
silc_buffer_format(buffer,
SILC_STR_UI_SHORT(len),
SILC_STR_UI_CHAR(cmd),
SILC_STR_UI_CHAR(argc),
SILC_STR_UI_SHORT(ident),
SILC_STR_END);
/* Add arguments */
if (argc) {
silc_buffer_pull(buffer, SILC_COMMAND_PAYLOAD_LEN);
silc_buffer_format(buffer,
SILC_STR_UI_XNSTRING(args->data,
silc_buffer_len(args)),
SILC_STR_END);
silc_buffer_push(buffer, SILC_COMMAND_PAYLOAD_LEN);
silc_buffer_free(args);
}
return buffer;
}
void silcpurple_wb_clear(PurpleWhiteboard *wb)
{
SilcPurpleWb wbs = wb->proto_data;
SilcBuffer packet;
int len;
PurpleConnection *gc;
SilcPurple sg;
gc = purple_account_get_connection(wb->account);
g_return_if_fail(gc);
sg = gc->proto_data;
g_return_if_fail(sg);
len = SILCPURPLE_WB_HEADER;
packet = silc_buffer_alloc_size(len);
if (!packet)
return;
/* Assmeble packet */
silc_buffer_format(packet,
SILC_STR_UI32_STRING(SILCPURPLE_WB_MIME),
SILC_STR_UI_CHAR(SILCPURPLE_WB_CLEAR),
SILC_STR_UI_SHORT(wbs->width),
SILC_STR_UI_SHORT(wbs->height),
SILC_STR_UI_INT(wbs->brush_color),
SILC_STR_UI_SHORT(wbs->brush_size),
SILC_STR_END);
/* Send the message */
if (wbs->type == 0) {
/* Private message */
silc_client_send_private_message(sg->client, sg->conn,
wbs->u.client,
SILC_MESSAGE_FLAG_DATA, NULL,
packet->head, len);
} else if (wbs->type == 1) {
/* Channel message */
silc_client_send_channel_message(sg->client, sg->conn,
wbs->u.channel, NULL,
SILC_MESSAGE_FLAG_DATA, NULL,
packet->head, len);
}
silc_buffer_free(packet);
}
SilcBuffer silc_command_payload_encode_payload(SilcCommandPayload payload)
{
SilcBuffer buffer;
SilcBuffer args = NULL;
SilcUInt32 len = 0;
SilcUInt32 argc = 0;
SILC_LOG_DEBUG(("Encoding command payload"));
if (payload->args) {
args = silc_argument_payload_encode_payload(payload->args);
if (args)
len = silc_buffer_len(args);
argc = silc_argument_get_arg_num(payload->args);
}
len += SILC_COMMAND_PAYLOAD_LEN;
buffer = silc_buffer_alloc_size(len);
if (!buffer) {
if (args)
silc_buffer_free(args);
return NULL;
}
/* Create Command payload */
silc_buffer_format(buffer,
SILC_STR_UI_SHORT(len),
SILC_STR_UI_CHAR(payload->cmd),
SILC_STR_UI_CHAR(argc),
SILC_STR_UI_SHORT(payload->ident),
SILC_STR_END);
/* Add arguments */
if (args) {
silc_buffer_pull(buffer, SILC_COMMAND_PAYLOAD_LEN);
silc_buffer_format(buffer,
SILC_STR_UI_XNSTRING(args->data,
silc_buffer_len(args)),
SILC_STR_END);
silc_buffer_push(buffer, SILC_COMMAND_PAYLOAD_LEN);
silc_buffer_free(args);
}
return buffer;
}
SilcNotifyPayload silc_notify_payload_parse(const unsigned char *payload,
SilcUInt32 payload_len)
{
SilcBufferStruct buffer;
SilcNotifyPayload newp;
SilcUInt16 len;
int ret;
SILC_LOG_DEBUG(("Parsing Notify payload"));
silc_buffer_set(&buffer, (unsigned char *)payload, payload_len);
newp = silc_calloc(1, sizeof(*newp));
if (!newp)
return NULL;
ret = silc_buffer_unformat(&buffer,
SILC_STR_UI_SHORT(&newp->type),
SILC_STR_UI_SHORT(&len),
SILC_STR_UI_CHAR(&newp->argc),
SILC_STR_END);
if (ret == -1)
goto err;
if (len > silc_buffer_len(&buffer))
goto err;
if (newp->argc) {
silc_buffer_pull(&buffer, 5);
newp->args = silc_argument_payload_parse(buffer.data,
silc_buffer_len(&buffer),
newp->argc);
if (!newp->args)
goto err;
silc_buffer_push(&buffer, 5);
}
return newp;
err:
silc_free(newp);
return NULL;
}
static SilcBool
silc_client_send_private_message_key_request(SilcClient client,
SilcClientConnection conn,
SilcClientEntry client_entry)
{
const char *cipher, *hmac;
SILC_LOG_DEBUG(("Sending private message key request"));
cipher = silc_cipher_get_name(client_entry->internal.send_key);
hmac = silc_hmac_get_name(client_entry->internal.hmac_send);
/* Send the packet */
return silc_packet_send_va_ext(conn->stream,
SILC_PACKET_PRIVATE_MESSAGE_KEY,
0, 0, NULL, SILC_ID_CLIENT,
&client_entry->id, NULL, NULL,
SILC_STR_UI_SHORT(strlen(cipher)),
SILC_STR_DATA(cipher, strlen(cipher)),
SILC_STR_UI_SHORT(strlen(hmac)),
SILC_STR_DATA(hmac, strlen(hmac)),
SILC_STR_END);
}
unsigned char *silc_attribute_get_verify_data(SilcDList attrs,
SilcBool server_verification,
SilcUInt32 *data_len)
{
SilcAttributePayload attr;
SilcBufferStruct buffer;
unsigned char *data = NULL;
SilcUInt32 len = 0;
silc_dlist_start(attrs);
while ((attr = silc_dlist_get(attrs)) != SILC_LIST_END) {
switch (attr->attribute) {
case SILC_ATTRIBUTE_SERVER_DIGITAL_SIGNATURE:
/* Server signature is never part of the verification data */
break;
case SILC_ATTRIBUTE_USER_DIGITAL_SIGNATURE:
/* For user signature verification this is not part of the data */
if (!server_verification)
break;
/* Fallback, for server signature verification, user digital signature
is part of verification data. */
default:
/* All other data is part of the verification data */
data = silc_realloc(data, sizeof(*data) * (4 + attr->data_len + len));
if (!data)
return NULL;
silc_buffer_set(&buffer, data + len, 4 + attr->data_len);
silc_buffer_format(&buffer,
SILC_STR_UI_CHAR(attr->attribute),
SILC_STR_UI_CHAR(attr->flags),
SILC_STR_UI_SHORT(attr->data_len),
SILC_STR_UI_XNSTRING(attr->data, attr->data_len),
SILC_STR_END);
len += 4 + attr->data_len;
break;
}
}
if (data_len)
*data_len = len;
return data;
}
static unsigned char *
silc_attribute_payload_encode_int(SilcAttribute attribute,
SilcAttributeFlags flags,
void *object,
SilcUInt32 object_size,
SilcUInt32 *ret_len)
{
SilcBuffer tmpbuf = NULL;
unsigned char tmp[4], *str = NULL, *ret;
SilcUInt32 len;
/* Encode according to attribute type */
if (flags & SILC_ATTRIBUTE_FLAG_VALID) {
if (!object && !object_size)
return NULL;
switch (attribute) {
case SILC_ATTRIBUTE_USER_INFO:
{
SilcVCard vcard = object;
if (object_size != sizeof(*vcard))
return NULL;
str = silc_vcard_encode(vcard, &object_size);
if (!str)
return NULL;
object = str;
}
break;
case SILC_ATTRIBUTE_SERVICE:
{
SilcAttributeObjService *service = object;
SilcUInt32 len2;
if (object_size != sizeof(*service))
return NULL;
len = strlen(service->address);
len2 = strlen(service->signon);
tmpbuf = silc_buffer_alloc_size(13 + len + len2);
if (!tmpbuf)
return NULL;
silc_buffer_format(tmpbuf,
SILC_STR_UI_INT(service->port),
SILC_STR_UI_SHORT(len),
SILC_STR_UI_XNSTRING(service->address, len),
SILC_STR_UI_CHAR(service->status),
SILC_STR_UI_SHORT(len2),
SILC_STR_UI_XNSTRING(service->signon, len2),
SILC_STR_UI_INT(service->idle),
SILC_STR_END);
object = tmpbuf->data;
object_size = silc_buffer_len(tmpbuf);
}
break;
case SILC_ATTRIBUTE_STATUS_MOOD:
case SILC_ATTRIBUTE_PREFERRED_CONTACT:
{
SilcUInt32 mask = SILC_PTR_TO_32(object);
if (object_size != sizeof(SilcUInt32))
return NULL;
SILC_PUT32_MSB(mask, tmp);
object = tmp;
object_size = sizeof(SilcUInt32);
}
break;
case SILC_ATTRIBUTE_STATUS_FREETEXT:
case SILC_ATTRIBUTE_PREFERRED_LANGUAGE:
case SILC_ATTRIBUTE_TIMEZONE:
{
unsigned char *string = object;
str = silc_malloc(2 + object_size);
if (!str)
return NULL;
SILC_PUT16_MSB(object_size, str);
memcpy(str + 2, string, object_size);
object = str;
object_size += 2;
}
break;
case SILC_ATTRIBUTE_STATUS_MESSAGE:
case SILC_ATTRIBUTE_EXTENSION:
case SILC_ATTRIBUTE_USER_ICON:
{
SilcMime mime = object;
if (object_size != sizeof(*mime))
return NULL;
str = silc_mime_encode(mime, &object_size);
if (!str)
return NULL;
object = str;
}
break;
case SILC_ATTRIBUTE_GEOLOCATION:
{
SilcAttributeObjGeo *geo = object;
SilcUInt32 len1, len2, len3, len4;
if (object_size != sizeof(*geo))
return NULL;
len1 = (geo->longitude ? strlen(geo->longitude) : 0);
len2 = (geo->latitude ? strlen(geo->latitude) : 0);
len3 = (geo->altitude ? strlen(geo->altitude) : 0);
len4 = (geo->accuracy ? strlen(geo->accuracy) : 0);
if (len1 + len2 + len3 + len4 == 0)
return NULL;
len = len1 + len2 + len3 + len4;
tmpbuf = silc_buffer_alloc_size(8 + len);
if (!tmpbuf)
return NULL;
silc_buffer_format(tmpbuf,
SILC_STR_UI_SHORT(len1),
SILC_STR_UI16_STRING(len1 ? geo->longitude : ""),
SILC_STR_UI_SHORT(len2),
SILC_STR_UI16_STRING(len2 ? geo->latitude : ""),
SILC_STR_UI_SHORT(len3),
SILC_STR_UI16_STRING(len3 ? geo->altitude : ""),
SILC_STR_UI_SHORT(len4),
SILC_STR_UI16_STRING(len4 ? geo->accuracy : ""),
SILC_STR_END);
object = tmpbuf->data;
object_size = silc_buffer_len(tmpbuf);
}
break;
case SILC_ATTRIBUTE_DEVICE_INFO:
{
SilcAttributeObjDevice *dev = object;
SilcUInt32 len1, len2, len3, len4;
if (object_size != sizeof(*dev))
return NULL;
len1 = (dev->manufacturer ? strlen(dev->manufacturer) : 0);
len2 = (dev->version ? strlen(dev->version) : 0);
len3 = (dev->model ? strlen(dev->model) : 0);
len4 = (dev->language ? strlen(dev->language) : 0);
if (len1 + len2 + len3 + len4 == 0)
return NULL;
len = len1 + len2 + len3 + len4;
tmpbuf = silc_buffer_alloc_size(4 + 8 + len);
if (!tmpbuf)
return NULL;
silc_buffer_format(tmpbuf,
SILC_STR_UI_INT(dev->type),
SILC_STR_UI_SHORT(len1),
SILC_STR_UI16_STRING(len1 ? dev->manufacturer : ""),
SILC_STR_UI_SHORT(len2),
SILC_STR_UI16_STRING(len2 ? dev->version : ""),
SILC_STR_UI_SHORT(len3),
SILC_STR_UI16_STRING(len3 ? dev->model : ""),
SILC_STR_UI_SHORT(len4),
SILC_STR_UI16_STRING(len4 ? dev->language : ""),
SILC_STR_END);
object = tmpbuf->data;
object_size = silc_buffer_len(tmpbuf);
}
break;
case SILC_ATTRIBUTE_PHONE_NUMBER:
{
SilcAttributeObjPN *pn = object;
if (object_size != sizeof(*pn))
return NULL;
if (!pn->number || strlen(pn->number) < 5)
return NULL;
tmpbuf = silc_buffer_alloc(0);
if (!tmpbuf)
return NULL;
if (silc_buffer_format(tmpbuf,
SILC_STR_UI_INT(pn->format),
SILC_STR_UI_SHORT(strlen(pn->number)),
SILC_STR_UI16_STRING(pn->number),
SILC_STR_END) < 0)
return NULL;
object = tmpbuf->data;
object_size = silc_buffer_len(tmpbuf);
}
break;
case SILC_ATTRIBUTE_USER_PUBLIC_KEY:
case SILC_ATTRIBUTE_SERVER_PUBLIC_KEY:
{
SilcAttributeObjPk *pk = object;
if (object_size != sizeof(*pk))
return NULL;
len = (pk->type ? strlen(pk->type) : 0);
tmpbuf = silc_buffer_alloc_size(2 + len + pk->data_len);
if (!tmpbuf)
return NULL;
silc_buffer_format(tmpbuf,
SILC_STR_UI_SHORT(len),
SILC_STR_UI16_STRING(pk->type),
SILC_STR_UI_XNSTRING(pk->data, pk->data_len),
SILC_STR_END);
object = tmpbuf->data;
object_size = silc_buffer_len(tmpbuf);
}
break;
case SILC_ATTRIBUTE_USER_DIGITAL_SIGNATURE:
case SILC_ATTRIBUTE_SERVER_DIGITAL_SIGNATURE:
{
SilcAttributeObjPk *pk = object;
if (object_size != sizeof(*pk))
return NULL;
object = pk->data;
object_size = pk->data_len;
}
break;
default:
return NULL;
break;
}
ret = silc_memdup(object, object_size);
if (tmpbuf)
silc_buffer_free(tmpbuf);
silc_free(str);
if (ret_len)
*ret_len = object_size;
return ret;
}
return NULL;
}
SilcBuffer silc_notify_payload_encode(SilcNotifyType type, SilcUInt32 argc,
va_list ap)
{
SilcBuffer buffer;
SilcBuffer args = NULL;
unsigned char **argv;
SilcUInt32 *argv_lens = NULL, *argv_types = NULL;
unsigned char *x;
SilcUInt32 x_len, len = 0;
int i, k = 0;
if (argc) {
argv = silc_calloc(argc, sizeof(unsigned char *));
if (!argv)
return NULL;
argv_lens = silc_calloc(argc, sizeof(SilcUInt32));
if (!argv_lens) {
silc_free(argv);
return NULL;
}
argv_types = silc_calloc(argc, sizeof(SilcUInt32));
if (!argv_types) {
silc_free(argv_lens);
silc_free(argv);
return NULL;
}
for (i = 0, k = 0; i < argc; i++) {
x = va_arg(ap, unsigned char *);
x_len = va_arg(ap, SilcUInt32);
if (!x || !x_len)
continue;
argv[k] = silc_memdup(x, x_len);
if (!argv[k])
return NULL;
argv_lens[k] = x_len;
argv_types[k] = i + 1;
k++;
}
args = silc_argument_payload_encode(k, argv, argv_lens, argv_types);
len = silc_buffer_len(args);
for (i = 0; i < k; i++)
silc_free(argv[i]);
silc_free(argv);
silc_free(argv_lens);
silc_free(argv_types);
}
len += 5;
buffer = silc_buffer_alloc_size(len);
if (!buffer)
return NULL;
silc_buffer_format(buffer,
SILC_STR_UI_SHORT(type),
SILC_STR_UI_SHORT(len),
SILC_STR_UI_CHAR(k),
SILC_STR_END);
if (k) {
silc_buffer_format(buffer,
SILC_STR_OFFSET(5),
SILC_STR_DATA(args->data, silc_buffer_len(args)),
SILC_STR_END);
silc_buffer_free(args);
}
return buffer;
}
