38 lines
1.6 KiB
Plaintext
38 lines
1.6 KiB
Plaintext
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OID information is generated via a series of perl scripts. In order, the full
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list of commands to run are:
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perl objects.pl objects.txt obj_mac.num ../../include/openssl/obj_mac.h
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perl obj_dat.pl ../../include/openssl/obj_mac.h obj_dat.h
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perl obj_xref.pl obj_mac.num obj_xref.txt > obj_xref.h
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objects.txt contains the list of all built-in OIDs. It is processed by
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objects.pl to output obj_mac.num and obj_mac.h. obj_mac.num is the list of NID
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values for each OID. This is an input/output parameter so NID values are stable
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across regenerations. obj_mac.h is the header which defines macros for all the
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built-in OIDs in C.
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obj_mac.h is read by obj_dat.pl to generate obj_dat.h. obj_dat.h contains the
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ASN1_OBJECTs corresponding to built-in OIDs themselves along with lookup tables
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for search by short name, OID, etc.
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obj_mac.num and obj_xref.txt are read by obj_xref.pl to generate
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obj_xref.h. obj_xref.txt links signature OIDs to corresponding public key
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algorithms and digests. obj_xref.h contains lookup tables for querying this
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information in both directions.
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Dependency graph:
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objects.txt
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V
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[objects.pl] <--+
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/ \ |
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V V |
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obj_mac.h obj_mac.num obj_xref.txt
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| \ /
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V V V
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[obj_dat.pl] [obj_xref.pl]
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V V
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obj_dat.h obj_xref.h
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