local function usage()
print("Usage:")
print("* Generate options of your system:")
print(" lua options.lua -g /path/to/ssl.h [version] > options.c")
print("* Examples:")
print(" lua options.lua -g /usr/include/openssl/ssl.h > options.c\n")
print(" lua options.lua -g /usr/include/openssl/ssl.h \"OpenSSL 1.1.1f\" > options.c\n")
print("* List options of your system:")
print(" lua options.lua -l /path/to/ssl.h\n")
end
--
local function printf(str, ...)
print(string.format(str, ...))
end
local function generate(options, version)
print([[
/*--------------------------------------------------------------------------
* LuaSec 1.1.1
*
* Copyright (C) 2006-2021 Bruno Silvestre
*
*--------------------------------------------------------------------------*/
#include <openssl/ssl.h>
#include "options.h"
/* If you need to generate these options again, see options.lua */
]])
printf([[
/*
OpenSSL version: %s
*/
]], version)
print([[static lsec_ssl_option_t ssl_options[] = {]])
for k, option in ipairs(options) do
local name = string.lower(string.sub(option, 8))
print(string.format([[#if defined(%s)]], option))
print(string.format([[ {"%s", %s},]], name, option))
print([[#endif]])
end
print([[ {NULL, 0L}]])
print([[
};
LSEC_API lsec_ssl_option_t* lsec_get_ssl_options() {
return ssl_options;
}
]])
end
local function loadoptions(file)
local options = {}
local f = assert(io.open(file, "r"))
for line in f:lines() do
local op = string.match(line, "define%s+(SSL_OP_BIT%()")
if not op then
op = string.match(line, "define%s+(SSL_OP_%S+)")
if op then
table.insert(options, op)
end
end
end
table.sort(options, function(a,b) return a<b end)
return options
end
--
local options
local flag, file, version = ...
version = version or "Unknown"
if not file then
usage()
elseif flag == "-g" then
options = loadoptions(file)
generate(options, version)
elseif flag == "-l" then
options = loadoptions(file)
for k, option in ipairs(options) do
print(option)
end
else
usage()
end