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| author | Kim Alvefur <zash@zash.se> | 2020-03-22 17:35:26 +0100 |
|---|---|---|
| committer | Kim Alvefur <zash@zash.se> | 2020-03-22 17:35:26 +0100 |
| commit | 89af9971573c5f74e8e5432315246971ddc47811 (patch) | |
| tree | 86b32af9cedd4b54b6b1059604c329f1851f566c | |
| parent | 520e494813f6f03f99529b1fd0db8e8c873251aa (diff) | |
| download | prosody-89af9971573c5f74e8e5432315246971ddc47811.tar.gz prosody-89af9971573c5f74e8e5432315246971ddc47811.zip | |
mod_admin_telnet: Handle unavailable cipher info (fixes #1510)
The LuaSec :info() method gathers info using the OpenSSL function
SSL_get_current_cipher(). Documentation for this function states that it
may return NULL if no session has been established (yet). If so, the
LuaSec functions wrapping this return nil, triggering a nil-indexing
error in mod_admin_telnet.
| -rw-r--r-- | plugins/mod_admin_telnet.lua | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/plugins/mod_admin_telnet.lua b/plugins/mod_admin_telnet.lua index 59eca28b..b0e349da 100644 --- a/plugins/mod_admin_telnet.lua +++ b/plugins/mod_admin_telnet.lua @@ -528,11 +528,14 @@ local function tls_info(session, line) common_info(session, line); if session.secure then local sock = session.conn and session.conn.socket and session.conn:socket(); - if sock and sock.info then - local info = sock:info(); - line[#line+1] = ("(%s with %s)"):format(info.protocol, info.cipher); - else - line[#line+1] = "(cipher info unavailable)"; + if sock then + local info = sock.info and sock:info(); + if info then + line[#line+1] = ("(%s with %s)"):format(info.protocol, info.cipher); + else + -- TLS session might not be ready yet + line[#line+1] = "(cipher info unavailable)"; + end end else line[#line+1] = "(insecure)"; |