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common: use struct onionreply.

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This makes it clear we're dealing with a message which is a wrapped error
reply (needing unwrap_onionreply), not an already-wrapped one.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2020-01-23 10:08:04 +10:30
parent aa6aad0131
commit 1099f6a5e1
27 changed files with 126 additions and 90 deletions
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15
common/sphinx.h
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@@ -164,8 +164,9 @@ enum onion_type parse_onionpacket(const u8 *src,
* HMAC
* @failure_msg: message (must support tal_len)
*/
u8 *create_onionreply(const tal_t *ctx, const struct secret *shared_secret,
const u8 *failure_msg);
struct onionreply *create_onionreply(const tal_t *ctx,
const struct secret *shared_secret,
const u8 *failure_msg);
/**
* wrap_onionreply - Add another encryption layer to the reply.
@@ -175,8 +176,9 @@ u8 *create_onionreply(const tal_t *ctx, const struct secret *shared_secret,
* encryption.
* @reply: the reply to wrap
*/
u8 *wrap_onionreply(const tal_t *ctx, const struct secret *shared_secret,
const u8 *reply);
struct onionreply *wrap_onionreply(const tal_t *ctx,
const struct secret *shared_secret,
const struct onionreply *reply);
/**
* unwrap_onionreply - Remove layers, check integrity and parse reply
@@ -186,10 +188,13 @@ u8 *wrap_onionreply(const tal_t *ctx, const struct secret *shared_secret,
* @numhops: path length and number of shared_secrets provided
* @reply: the incoming reply
* @origin_index: the index in the path where the reply came from (-1 if unknown)
*
* Reverses create_onionreply and wrap_onionreply.
*/
u8 *unwrap_onionreply(const tal_t *ctx,
const struct secret *shared_secrets,
const int numhops, const u8 *reply,
const int numhops,
const struct onionreply *reply,
int *origin_index);
/**