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Handle OpenSSL >=3 ABI compatibility.

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Beyond OpenSSL 3.0, the ABI compatibility guarantees are wider (only
major must match instead of major and minor in earlier versions).
bz#3548, ok djm@
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Darren Tucker 2023-05-08 20:12:59 +10:00
parent 0e9e2663eb
commit b7afd8a4ec
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1 changed files with 11 additions and 9 deletions
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20
openbsd-compat/openssl-compat.c
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@ -33,10 +33,10 @@
/* /*
* OpenSSL version numbers: MNNFFPPS: major minor fix patch status * OpenSSL version numbers: MNNFFPPS: major minor fix patch status
* We match major, minor, fix and status (not patch) for <1.0.0. * Versions >=3 require only major versions to match.
* After that, we acceptable compatible fix versions (so we * For versions <3, we accept compatible fix versions (so we allow 1.0.1
* allow 1.0.1 to work with 1.0.0). Going backwards is only allowed * to work with 1.0.0). Going backwards is only allowed within a patch series.
* within a patch series. * See https://www.openssl.org/policies/releasestrat.html
*/ */
int int
@ -48,15 +48,17 @@ ssh_compatible_openssl(long headerver, long libver)
if (headerver == libver) if (headerver == libver)
return 1; return 1;
/* for versions < 1.0.0, major,minor,fix,status must match */ /*
if (headerver < 0x1000000f) { * For versions >= 3.0, only the major and status must match.
mask = 0xfffff00fL; /* major,minor,fix,status */ */
if (headerver >= 0x3000000f) {
mask = 0xf000000fL; /* major,status */
return (headerver & mask) == (libver & mask); return (headerver & mask) == (libver & mask);
} }
/* /*
* For versions >= 1.0.0, major,minor,status must match and library * For versions >= 1.0.0, but <3, major,minor,status must match and
* fix version must be equal to or newer than the header. * library fix version must be equal to or newer than the header.
*/ */
mask = 0xfff0000fL; /* major,minor,status */ mask = 0xfff0000fL; /* major,minor,status */
hfix = (headerver & 0x000ff000) >> 12; hfix = (headerver & 0x000ff000) >> 12;