[tor-commits] [tor/master] hs-v3: Add an encoded descriptor client cache lookup function

[nickm@xxxxxxxxxxxxxx]

commit 05766eae3099ff1542b1dc4715b824d206b7c84f
Author: David Goulet <dgoulet@xxxxxxxxxxxxxx>
Date:   Tue Nov 7 15:38:02 2017 -0500

    hs-v3: Add an encoded descriptor client cache lookup function
    
    This commit adds hs_cache_lookup_encoded_as_client() function that returns the
    encoded descriptor for a given service public key. This will be needed by the
    "GETINFO hs/client/desc/id/<ADDR>" control port command.
    
    Signed-off-by: David Goulet <dgoulet@xxxxxxxxxxxxxx>
---
 src/or/hs_cache.c | 18 ++++++++++++++++++
 src/or/hs_cache.h |  2 ++
 2 files changed, 20 insertions(+)

diff --git a/src/or/hs_cache.c b/src/or/hs_cache.c
index 3ebe13fb4..b864a0f71 100644
--- a/src/or/hs_cache.c
+++ b/src/or/hs_cache.c
@@ -706,6 +706,24 @@ cache_clean_v3_as_client(time_t now)
 }
 
 /** Public API: Given the HS ed25519 identity public key in <b>key</b>, return
+ *  its HS encoded descriptor if it's stored in our cache, or NULL if not. */
+const char *
+hs_cache_lookup_encoded_as_client(const ed25519_public_key_t *key)
+{
+  hs_cache_client_descriptor_t *cached_desc = NULL;
+
+  tor_assert(key);
+
+  cached_desc = lookup_v3_desc_as_client(key->pubkey);
+  if (cached_desc) {
+    tor_assert(cached_desc->encoded_desc);
+    return cached_desc->encoded_desc;
+  }
+
+  return NULL;
+}
+
+/** Public API: Given the HS ed25519 identity public key in <b>key</b>, return
  *  its HS descriptor if it's stored in our cache, or NULL if not. */
 const hs_descriptor_t *
 hs_cache_lookup_as_client(const ed25519_public_key_t *key)
diff --git a/src/or/hs_cache.h b/src/or/hs_cache.h
index 2dcc518a7..a141634cc 100644
--- a/src/or/hs_cache.h
+++ b/src/or/hs_cache.h
@@ -81,6 +81,8 @@ int hs_cache_lookup_as_dir(uint32_t version, const char *query,
 
 const hs_descriptor_t *
 hs_cache_lookup_as_client(const ed25519_public_key_t *key);
+const char *
+hs_cache_lookup_encoded_as_client(const ed25519_public_key_t *key);
 int hs_cache_store_as_client(const char *desc_str,
                              const ed25519_public_key_t *identity_pk);
 void hs_cache_clean_as_client(time_t now);



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