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#include <common/bigsize.h>
#include <wire/tlvstream.h>
#include <wire/wire.h>
void towire_tlvstream_raw(u8 **pptr, const struct tlv_field *fields)
{
if (!fields)
return;
for (size_t i = 0; i < tal_count(fields); i++) {
const struct tlv_field *field = &fields[i];
/* BOLT #1:
*
* The sending node:
...
* - MUST minimally encode `type` and `length`.
*/
towire_bigsize(pptr, field->numtype);
towire_bigsize(pptr, field->length);
towire(pptr, field->value, field->length);
}
}
void tlvstream_set_raw(struct tlv_field **stream, u64 type, u8 *value TAKES)
{
struct tlv_field f;
f.length = tal_bytelen(value);
f.numtype = type;
f.value = tal_dup_arr(*stream, u8, value, f.length, 0);
tal_arr_expand(stream, f);
}
void tlvstream_set_short_channel_id(struct tlv_field **stream, u64 type,
struct short_channel_id *value)
{
u8 *ser = tal_arr(NULL, u8, 0);
towire_short_channel_id(&ser, value);
tlvstream_set_raw(stream, type, take(ser));
}
void tlvstream_set_tu64(struct tlv_field **stream, u64 type, u64 value)
{
u8 *ser = tal_arr(NULL, u8, 0);
towire_tu64(&ser, value);
tlvstream_set_raw(stream, type, take(ser));
}
void tlvstream_set_tu32(struct tlv_field **stream, u64 type, u32 value)
{
u8 *ser = tal_arr(NULL, u8, 0);
towire_tu64(&ser, value);
tlvstream_set_raw(stream, type, take(ser));
}
static struct tlv_field *tlvstream_get_raw(struct tlv_field *stream, u64 type)
{
for (size_t i=0; i<tal_count(stream); i++)
if (stream[i].numtype == type)
return &stream[i];
return NULL;
}
bool tlvstream_get_short_channel_id(struct tlv_field *stream, u64 type,
struct short_channel_id *value)
{
struct tlv_field *raw = tlvstream_get_raw(stream, type);
const u8 *v;
size_t max;
if (raw == NULL || raw->length != 8)
return false;
max = raw->length;
v = raw->value;
fromwire_short_channel_id(&v, &max, value);
return true;
}
bool tlvstream_get_tu64(struct tlv_field *stream, u64 type, u64 *value)
{
struct tlv_field *raw = tlvstream_get_raw(stream, type);
const u8 *v;
size_t max;
if (raw == NULL || raw->length != 8)
return false;
max = raw->length;
v = raw->value;
*value = fromwire_tu64(&v, &max);
return true;
}
bool tlvstream_get_tu32(struct tlv_field *stream, u64 type, u32 *value)
{
struct tlv_field *raw = tlvstream_get_raw(stream, type);
const u8 *v;
size_t max;
if (raw == NULL || raw->length != 8)
return false;
max = raw->length;
v = raw->value;
*value = fromwire_tu64(&v, &max);
return true;
}