hmac.lua:81: size of C type is unknown or too large at line 44 stack traceback

[NilsTellow]

Hi all,

Installed the plugin on my test environment. I've set everything up with as requested in the getting started having Auth0 as Identification service but I'm getting the following error.

2020/04/08 08:21:54 [error] 22#0: *22341 lua coroutine: 
runtime error: /usr/local/share/lua/5.1/resty/hmac.lua:81: size of C type is unknown or too large at line 44
stack traceback:
coroutine 0:
    [C]: in function 'require'
    /usr/local/share/lua/5.1/resty/openidc.lua:763: in function 'openidc_load_jwt_and_verify_crypto'
    /usr/local/share/lua/5.1/resty/openidc.lua:844: in function 'openidc_load_and_validate_jwt_id_token'
    /usr/local/share/lua/5.1/resty/openidc.lua:928: in function 'authenticate'
    /usr/local/share/lua/5.1/kong/plugins/oidc/handler.lua:47: in function 'make_oidc'
    /usr/local/share/lua/5.1/kong/plugins/oidc/handler.lua:38: in function 'handle'
    /usr/local/share/lua/5.1/kong/plugins/oidc/handler.lua:20: in function </usr/local/share/lua/5.1/kong/plugins/oidc/handler.lua:14>
coroutine 1:
    [C]: in function 'resume'
    coroutine.wrap:21: in function <coroutine.wrap:21>
    /usr/local/share/lua/5.1/kong/init.lua:683: in function 'access'
    access_by_lua(nginx-kong.conf:104):2: in main chunk, client: [Removed for privacy]
2020/04/08 08:21:54 [error] 22#0: *22341 [kong] init.lua:690 /usr/local/share/lua/5.1/resty/hmac.lua:81: size of C type is unknown or too large at line 44, client: [Removed for privacy] 

It is probably related to the following issue: https://github.com/Kong/kong/issues/5549

[fffonion]

@NilsTellow Hi, please try update the lua-resty-jwt library, the above issue has been fixed in 0.2.2

[NilsTellow]

Truly thankful for the quick reply @fffonion. Is it correct to assume that, installing lua-resty-jwt before installing lua-resty-openidc will resolve the issue?

FROM kong:2.0.3

USER root

RUN luarocks install lua-resty-jwt
RUN luarocks install lua-resty-openidc
RUN luarocks install kong-oidc

USER kong

[fffonion]

In fact you don't need to explictly install lua-resty-jwt, you will only need to upgrade it if you previously installed the old version, which is not the case for docker. ~luarocks install lua-resty-openidc will be sufficient:~ Well actually the version pinned in kong-oidc is sufficient to pull the latest lua-resty-jwt, so i'd just try

luarocks install kong-oidc

directly.

[NilsTellow]

Fixed. Thank you @fffonion! Last image I built was two days ago. Maybe a cached version?