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[tor-commits] [tor/maint-0.3.1] Add a missing "return -1" when checking for Ed25519 ID loops



commit 6c35ad08cf36d36a5e2ff888cb7dc8c8df5efe10
Author: Nick Mathewson <nickm@xxxxxxxxxxxxxx>
Date:   Tue May 22 08:54:17 2018 -0400

    Add a missing "return -1" when checking for Ed25519 ID loops
    
    Fixes bug 26158; bugfix on 0.3.0.1-alpha.
---
 changes/bug26158      | 5 +++++
 src/or/circuitbuild.c | 1 +
 2 files changed, 6 insertions(+)

diff --git a/changes/bug26158 b/changes/bug26158
new file mode 100644
index 000000000..5ae1c3060
--- /dev/null
+++ b/changes/bug26158
@@ -0,0 +1,5 @@
+   o Minor bugfixes (relay):
+     - Relays now correctly block attempts to re-extend to the previous
+       relay by Ed25519 identity. Previously they would warn in this case,
+       but not actually reject the attempt. Fixes bug 26158; bugfix on
+       0.3.0.1-alpha.
diff --git a/src/or/circuitbuild.c b/src/or/circuitbuild.c
index 16cef0e56..41ae51a3f 100644
--- a/src/or/circuitbuild.c
+++ b/src/or/circuitbuild.c
@@ -1267,6 +1267,7 @@ circuit_extend(cell_t *cell, circuit_t *circ)
     log_fn(LOG_PROTOCOL_WARN, LD_PROTOCOL,
            "Client asked me to extend back to the previous hop "
            "(by Ed25519 ID).");
+    return -1;
   }
 
   n_chan = channel_get_for_extend((const char*)ec.node_id,



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