/* Parses channel payload returning new channel payload structure. */
-SilcChannelPayload silc_channel_payload_parse(SilcBuffer buffer)
+SilcChannelPayload silc_channel_payload_parse(const unsigned char *payload,
+ uint32 payload_len)
{
+ SilcBufferStruct buffer;
SilcChannelPayload new;
int ret;
SILC_LOG_DEBUG(("Parsing channel payload"));
+ silc_buffer_set(&buffer, (unsigned char *)payload, payload_len);
new = silc_calloc(1, sizeof(*new));
/* Parse the Channel Payload. Ignore the padding. */
- ret = silc_buffer_unformat(buffer,
+ ret = silc_buffer_unformat(&buffer,
SILC_STR_UI16_NSTRING_ALLOC(&new->channel_name,
&new->name_len),
SILC_STR_UI16_NSTRING_ALLOC(&new->channel_id,
if (ret == -1)
goto err;
- if ((new->name_len < 1 || new->name_len > buffer->len) ||
- (new->id_len < 1 || new->id_len > buffer->len)) {
+ if ((new->name_len < 1 || new->name_len > buffer.len) ||
+ (new->id_len < 1 || new->id_len > buffer.len)) {
SILC_LOG_ERROR(("Incorrect channel payload in packet, packet dropped"));
goto err;
}
/* Parses list of channel payloads returning list of payloads. */
-SilcDList silc_channel_payload_parse_list(SilcBuffer buffer)
+SilcDList silc_channel_payload_parse_list(const unsigned char *payload,
+ uint32 payload_len)
{
+ SilcBufferStruct buffer;
SilcDList list;
SilcChannelPayload new;
int len, ret;
SILC_LOG_DEBUG(("Parsing channel payload list"));
+ silc_buffer_set(&buffer, (unsigned char *)payload, payload_len);
list = silc_dlist_init();
- while (buffer->len) {
+ while (buffer.len) {
new = silc_calloc(1, sizeof(*new));
- ret = silc_buffer_unformat(buffer,
+ ret = silc_buffer_unformat(&buffer,
SILC_STR_UI16_NSTRING_ALLOC(&new->channel_name,
&new->name_len),
SILC_STR_UI16_NSTRING_ALLOC(&new->channel_id,
if (ret == -1)
goto err;
- if ((new->name_len < 1 || new->name_len > buffer->len) ||
- (new->id_len < 1 || new->id_len > buffer->len)) {
+ if ((new->name_len < 1 || new->name_len > buffer.len) ||
+ (new->id_len < 1 || new->id_len > buffer.len)) {
SILC_LOG_ERROR(("Incorrect channel payload in packet, packet dropped"));
goto err;
}
len = 2 + new->name_len + 2 + new->id_len + 4;
- if (buffer->len < len)
+ if (buffer.len < len)
break;
- silc_buffer_pull(buffer, len);
+ silc_buffer_pull(&buffer, len);
silc_dlist_add(list, new);
}
/* Encode new channel payload and returns it as buffer. */
-SilcBuffer silc_channel_payload_encode(unsigned char *channel_name,
+SilcBuffer silc_channel_payload_encode(const unsigned char *channel_name,
uint16 channel_name_len,
- unsigned char *channel_id,
+ const unsigned char *channel_id,
uint32 channel_id_len,
uint32 mode)
{
This also decrypts it and checks the MAC. */
SilcChannelMessagePayload
-silc_channel_message_payload_parse(SilcBuffer buffer,
+silc_channel_message_payload_parse(unsigned char *payload,
+ uint32 payload_len,
SilcCipher cipher,
SilcHmac hmac)
{
+ SilcBufferStruct buffer;
SilcChannelMessagePayload new;
int ret;
uint32 iv_len, mac_len;
SILC_LOG_DEBUG(("Parsing channel message payload"));
+ silc_buffer_set(&buffer, payload, payload_len);
+
/* Decrypt the payload */
- ret = silc_channel_message_payload_decrypt(buffer->data, buffer->len,
+ ret = silc_channel_message_payload_decrypt(buffer.data, buffer.len,
cipher, hmac);
if (ret == FALSE)
return NULL;
new = silc_calloc(1, sizeof(*new));
/* Parse the Channel Message Payload. Ignore the padding. */
- ret = silc_buffer_unformat(buffer,
+ ret = silc_buffer_unformat(&buffer,
SILC_STR_UI_SHORT(&new->flags),
SILC_STR_UI16_NSTRING_ALLOC(&new->data,
&new->data_len),
if (ret == -1)
goto err;
- if (new->data_len < 1 || new->data_len > buffer->len) {
+ if (new->data_len < 1 || new->data_len > buffer.len) {
SILC_LOG_ERROR(("Incorrect channel message payload in packet, "
"packet dropped"));
goto err;
SilcBuffer silc_channel_message_payload_encode(uint16 flags,
uint16 data_len,
- unsigned char *data,
+ const unsigned char *data,
uint16 iv_len,
unsigned char *iv,
SilcCipher cipher,
/* Parses channel key payload returning new channel key payload structure */
-SilcChannelKeyPayload silc_channel_key_payload_parse(SilcBuffer buffer)
+SilcChannelKeyPayload
+silc_channel_key_payload_parse(const unsigned char *payload,
+ uint32 payload_len)
{
+ SilcBufferStruct buffer;
SilcChannelKeyPayload new;
int ret;
SILC_LOG_DEBUG(("Parsing channel key payload"));
+ silc_buffer_set(&buffer, (unsigned char *)payload, payload_len);
new = silc_calloc(1, sizeof(*new));
/* Parse the Channel Key Payload */
ret =
- silc_buffer_unformat(buffer,
+ silc_buffer_unformat(&buffer,
SILC_STR_UI16_NSTRING_ALLOC(&new->id, &new->id_len),
SILC_STR_UI16_NSTRING_ALLOC(&new->cipher,
&new->cipher_len),
to add channel key payload into a packet. */
SilcBuffer silc_channel_key_payload_encode(uint16 id_len,
- unsigned char *id,
+ const unsigned char *id,
uint16 cipher_len,
- unsigned char *cipher,
+ const unsigned char *cipher,
uint16 key_len,
- unsigned char *key)
+ const unsigned char *key)
{
SilcBuffer buffer;
uint32 len;