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-module(mongoose_subdomain_utils). |
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%% API |
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-export([make_subdomain_pattern/1, |
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get_fqdn/2, |
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subdomain_type/1, |
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is_subdomain/3]). |
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-type subdomain_pattern() :: {fqdn | prefix, binary()}. |
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-export_type([subdomain_pattern/0]). |
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%% this function preprocesses configuration subdomain templates like: |
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%% "subdomain.@HOST@" |
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%% it is compatible with mongoose_config_parser_toml:processor() type, |
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%% so it can be used as #option.process value (for more information see |
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%% mongoose_config_spec.hrl) |
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-spec make_subdomain_pattern(SubdomainPatternConfigOpt :: binary() | string()) -> |
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subdomain_pattern(). |
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make_subdomain_pattern(ConfigOpt) when is_list(ConfigOpt) -> |
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make_subdomain_pattern(list_to_binary(ConfigOpt)); |
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make_subdomain_pattern(ConfigOpt) when is_binary(ConfigOpt) -> |
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case re:replace(ConfigOpt, "\\.@HOST@$", ".", [{return, binary}]) of |
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ConfigOpt -> {fqdn, ConfigOpt}; |
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Prefix -> {prefix, Prefix} |
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end. |
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-spec get_fqdn(subdomain_pattern(), Domain :: mongooseim:domain_name()) -> |
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Subdomain :: mongooseim:domain_name(). |
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get_fqdn({fqdn, Subdomain}, _Domain) -> Subdomain; |
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get_fqdn({prefix, Prefix}, Domain) -> <<Prefix/binary, Domain/binary>>. |
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-spec subdomain_type(subdomain_pattern()) -> fqdn | subdomain. |
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subdomain_type({fqdn, _}) -> fqdn; |
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subdomain_type({prefix, _}) -> subdomain. |
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-spec is_subdomain(subdomain_pattern(), |
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Domain :: mongooseim:domain_name(), |
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Subdomain :: mongooseim:domain_name()) -> boolean(). |
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is_subdomain({fqdn, FQDN}, _, Subdomain) -> |
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FQDN =:= Subdomain; |
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is_subdomain({prefix, Prefix}, Domain, Subdomain) -> |
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Subdomain =:= <<Prefix/binary, Domain/binary>>. |