Correctly parse the value set via OIDCMemCacheConnectionsTTL

[rpluem-vf]

Currently the value set via OIDCMemCacheConnectionsTTL is interpreted as microseconds and not as seconds. Correctly interpret this value as seconds via ap_timeout_parameter_parse and create the needed infrastructure to parse similar timeout fields in the future.

• src/cache/memcache.c:

  • Change type of ttl to apr_interval_time_t.
  • The default value is now returned via oidc_cfg_cache_memcache_ttl_get.
  • Adjust format strings for apr_interval_time_t printing.

• src/cfg/cache.c:

  • Generalize OIDC_CFG_MEMBER_FUNCS_CACHE_INT_EXT macro to OIDC_CFG_MEMBER_FUNCS_CACHE_PARSE which allows to specify the parsed type.
  • Add OIDC_CFG_MEMBER_FUNCS_CACHE_TIMEOUT macro which parses apr_interval_time_t values via oidc_cfg_parse_timeout_min_max.
  • Shorten maximum TTL via OIDC_CACHE_MEMCACHE_CONNECTIONS_TTL_MAX to 4292 seconds.
  • Change default via OIDC_DEFAULT_CACHE_MEMCACHE_CONNECTIONS_TTL from 0 to 60 seconds.
  • Use OIDC_CFG_MEMBER_FUNCS_CACHE_TIMEOUT instead of OIDC_CFG_MEMBER_FUNCS_CACHE_INT macro for memcache_ttl field.

• src/cfg/cache.h:

  • Change type of memcache_ttl from int to apr_interval_time_t.

• src/cfg/cfg.h:

  • Define OIDC_CONFIG_POS_TIMEOUT_UNSET to -2 (-1 might be used for unlimited timeout).

• src/cfg/cfg_int.h:

  • Change type of memcache_ttl from int to apr_interval_time_t.

• src/cfg/parse.c:

  • Add oidc_cfg_parse_timeout_min_max to parse a timeout string via ap_timeout_parameter_parse into an apr_interval_time_t if it is in a valid min/max range.

• src/cfg/parse.h:

  • Add prototype for oidc_cfg_parse_timeout_min_max