43 lines
1.8 KiB
Go
43 lines
1.8 KiB
Go
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/*
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Package exec implements a manual DNS provider which runs a program for adding/removing the DNS record.
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The file name of the external program is specified in the environment variable `EXEC_PATH`.
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When it is run by lego, three command-line parameters are passed to it:
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The action ("present" or "cleanup"), the fully-qualified domain name, the value for the record and the TTL.
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For example, requesting a certificate for the domain 'foo.example.com' can be achieved by calling lego as follows:
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EXEC_PATH=./update-dns.sh \
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lego --dns exec \
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--domains foo.example.com \
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--email invalid@example.com run
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It will then call the program './update-dns.sh' with like this:
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./update-dns.sh "present" "_acme-challenge.foo.example.com." "MsijOYZxqyjGnFGwhjrhfg-Xgbl5r68WPda0J9EgqqI" "120"
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The program then needs to make sure the record is inserted.
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When it returns an error via a non-zero exit code, lego aborts.
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When the record is to be removed again,
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the program is called with the first command-line parameter set to "cleanup" instead of "present".
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If you want to use the raw domain, token, and keyAuth values with your program, you can set `EXEC_MODE=RAW`:
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EXEC_MODE=RAW \
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EXEC_PATH=./update-dns.sh \
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lego --dns exec \
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--domains foo.example.com \
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--email invalid@example.com run
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It will then call the program './update-dns.sh' like this:
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./update-dns.sh "present" "foo.example.com." "--" "some-token" "KxAy-J3NwUmg9ZQuM-gP_Mq1nStaYSaP9tYQs5_-YsE.ksT-qywTd8058G-SHHWA3RAN72Pr0yWtPYmmY5UBpQ8"
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NOTE:
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The `--` is because the token MAY start with a `-`, and the called program may try and interpret a - as indicating a flag.
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In the case of urfave, which is commonly used,
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you can use the `--` delimiter to specify the start of positional arguments, and handle such a string safely.
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*/
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package exec
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