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util/argparse.lua @ 11609:6dcc45a2e3bc
mod_s2s: Bail if connection is destroyed after attempting to open stream
Fixes "attempt to compare number with nil" because `session.version` has
been cleared by s2smanager.destroy_session.
This can happen with the server_epoll setting opportunistic_writes
enabled, which means that it can notice that the connection failed at
this point, after which it triggers the whole chain of events that leads
to session destruction and "cleaning" most of the session fields.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Wed, 16 Jun 2021 23:53:00 +0200 (2021-06-16) |
parent | 10936:d770435f0f84 |
child | 11846:6425dfa3de45 |
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local function parse(arg, config) local short_params = config and config.short_params or {}; local value_params = config and config.value_params or {}; local parsed_opts = {}; if #arg == 0 then return parsed_opts; end while true do local raw_param = arg[1]; if not raw_param then break; end local prefix = raw_param:match("^%-%-?"); if not prefix then break; elseif prefix == "--" and raw_param == "--" then table.remove(arg, 1); break; end local param = table.remove(arg, 1):sub(#prefix+1); if #param == 1 and short_params then param = short_params[param]; end if not param then return nil, "param-not-found", param; end local param_k, param_v; if value_params[param] then param_k, param_v = param, table.remove(arg, 1); if not param_v then return nil, "missing-value", raw_param; end else param_k, param_v = param:match("^([^=]+)=(.+)$"); if not param_k then if param:match("^no%-") then param_k, param_v = param:sub(4), false; else param_k, param_v = param, true; end end end parsed_opts[param_k] = param_v; end return parsed_opts; end return { parse = parse; }