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