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-- https://github.com/GUI/lua-openssl-ffi/blob/master/lib/openssl-ffi/version.lua
local ffi = require "ffi"
local C = ffi.C
local ffi_str = ffi.string
ffi.cdef[[
// 1.0
unsigned long SSLeay(void);
const char *SSLeay_version(int t);
// >= 1.1
unsigned long OpenSSL_version_num();
const char *OpenSSL_version(int t);
// >= 3.0
const char *OPENSSL_info(int t);
// BoringSSL
int BORINGSSL_self_test(void);
]]
local version_func, info_func
local types_table
-- >= 1.1
local ok, version_num = pcall(function()
local num = C.OpenSSL_version_num()
version_func = C.OpenSSL_version
types_table = {
VERSION = 0,
CFLAGS = 1,
BUILT_ON = 2,
PLATFORM = 3,
DIR = 4,
ENGINES_DIR = 5,
VERSION_STRING = 6,
FULL_VERSION_STRING = 7,
MODULES_DIR = 8,
CPU_INFO = 9,
}
return num
end)
if not ok then
-- 1.0.x
ok, version_num = pcall(function()
local num = C.SSLeay()
version_func = C.SSLeay_version
types_table = {
VERSION = 0,
CFLAGS = 2,
BUILT_ON = 3,
PLATFORM = 4,
DIR = 5,
}
return num
end)
end
if not ok then
error(string.format("OpenSSL has encountered an error: %s; is OpenSSL library loaded?",
tostring(version_num)))
elseif type(version_num) == 'number' and version_num < 0x10000000 then
error(string.format("OpenSSL version %s is not supported", tostring(version_num or 0)))
elseif not version_num then
error("Can not get OpenSSL version")
end
if version_num >= 0x30000000 then
local info_table = {
INFO_CONFIG_DIR = 1001,
INFO_ENGINES_DIR = 1002,
INFO_MODULES_DIR = 1003,
INFO_DSO_EXTENSION = 1004,
INFO_DIR_FILENAME_SEPARATOR = 1005,
INFO_LIST_SEPARATOR = 1006,
INFO_SEED_SOURCE = 1007,
INFO_CPU_SETTINGS = 1008,
}
for k, v in pairs(info_table) do
types_table[k] = v
end
info_func = C.OPENSSL_info
else
info_func = function(_)
error(string.format("OPENSSL_info is not supported on %s", ffi_str(version_func(0))))
end
end
local BORINGSSL = false
pcall(function()
local _ = C.BORINGSSL_self_test
BORINGSSL = true
end)
return setmetatable({
version_num = tonumber(version_num),
version_text = ffi_str(version_func(0)),
version = function(t)
return ffi_str(version_func(t))
end,
info = function(t)
return ffi_str(info_func(t))
end,
OPENSSL_3X = version_num >= 0x30000000 and version_num < 0x30200000,
OPENSSL_30 = version_num >= 0x30000000 and version_num < 0x30100000, -- for backward compat, deprecated
OPENSSL_11 = version_num >= 0x10100000 and version_num < 0x10200000,
OPENSSL_111 = version_num >= 0x10101000 and version_num < 0x10200000,
OPENSSL_11_OR_LATER = version_num >= 0x10100000 and version_num < 0x30200000,
OPENSSL_111_OR_LATER = version_num >= 0x10101000 and version_num < 0x30200000,
OPENSSL_10 = version_num < 0x10100000 and version_num > 0x10000000,
BORINGSSL = BORINGSSL,
BORINGSSL_110 = BORINGSSL and version_num >= 0x10100000 and version_num < 0x10101000
}, {
__index = types_table,
})
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