https now working!

Still extremely ugly:
- I've inlined all the namespaces under ssl, so you need to know that
  context and config are related to ssl.
- luasec comes with its own copy of luasocket. I haven't deduped that
  yet.

1 files changed, 93 insertions, 0 deletions

diff --git a/src/luasec/options.lua b/src/luasec/options.lua
new file mode 100644
index 0000000..d9a8801
--- /dev/null
+++ b/src/luasec/options.lua
@@ -0,0 +1,93 @@
+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