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fq/format/asn1/asn1_ber.jq
Mattias Wadman f4480c6fe5 decode,interp: Support for format specific options
interp: Refactor format help and also include options
interp: Add -o name=@path to load file content as value (not documented yet, might change)
interp,decode: Expose decode out value as _out (might change)
interp: Refactor foramts.jq into format_{decode,func,include}.jq
interp: Refactor torepr into _format_func for generic format function overloading
interp: Refactor -o options parsing to be more generic and collect unknowns options to be used as format options
decode of decode alises
func for format overloaded functions
include for format specific jq functions (also _help, torepr etc)
flac_frame: Add bits_per_sample option
mp3: Add max_unique_header_config and max_sync_seek options
mp4: Add decode_samples and allow_truncate options
avc_au: Has length_size option
hevc_au: Has length_size option
aac_frame: Has object_typee option
doc: Rewrite format doc generation, less hack more jq
2022-05-01 17:08:30 +02:00

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def _asn1_ber_torepr:
if .class == "universal" then
if .tag | . == "sequence" or . == "set" then
.constructed | map(_asn1_ber_torepr)
else .value | tovalue
end
else .constructed | map(_asn1_ber_torepr)
end;
def _asn1_ber__help:
{ notes: "Supports decoding BER, CER and DER (X.690).
- Currently no extra validation is done for CER and DER.
- Does not support specifying a schema.
- Supports `torepr` but without schema all sequences and sets will be arrays.",
examples: [
{comment: "`frompem` and `topem` can be used to work with PEM format", shell: "fq -d raw 'frompem | asn1_ber | d' cert.pem"},
{comment: "Can be used to decode nested parts", shell: "fq -d asn1_ber '.constructed[1].value | asn1_ber' file.ber"},
{ comment: "If schema is known and not complicated it can be reproduced",
shell: "fq -d asn1_ber 'torepr as $r | [\"version\", \"modulus\", \"private_exponent\", \"private_exponen\", \"prime1\", \"prime2\", \"exponent1\", \"exponent2\", \"coefficient\"] | with_entries({key: .value, value: $r[.key]})' pkcs1.der"
}
],
links: [
{url: "https://www.itu.int/ITU-T/studygroups/com10/languages/X.690_1297.pdf"},
{url: "https://en.wikipedia.org/wiki/X.690"},
{url: "https://letsencrypt.org/docs/a-warm-welcome-to-asn1-and-der/"},
{url: "https://lapo.it/asn1js/"}
]
};