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Update obf.lua

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This commit is contained in:
dami
2025-12-05 15:51:00 +08:00
parent 4789e40574
commit 9cb4dbc79d
1 changed files with 24 additions and 3 deletions
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plugins/openresty/resty/obf/obf.lua
+24 -3
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@@ -46,8 +46,6 @@ function _M.obf_encode(content)
else
local key_bin = ffi_str(a._key, 32)
iv_bin = ffi_str(a._iv, 12)
local sh1 = sha256:new(); sh1:update(key_bin); local key_fpr = resty_str.to_hex(sh1:final())
local sh2 = sha256:new(); sh2:update(iv_bin); local iv_fpr = resty_str.to_hex(sh2:final())
local res, eerr = a:encrypt(content)
if not res then
log(ngx.ERR, log_fmt("aes encrypt error: %s", tostring(eerr)))
@@ -120,7 +118,11 @@ function _M.obf_html()
if find(content_type, "text/html") then
local cache_key = _M.get_cache_key()..html_debug
local var_rand = ngx.var.obf_rand
local var_b64 = ngx.var.obf_uint8_b64
local var_skip_large = ngx.var.obf_skip_large or ""
local var_skip_small = ngx.var.obf_skip_small or ""
local cache_key = _M.get_cache_key()..html_debug..tostring(var_rand)..tostring(var_b64)..tostring(var_skip_large)..tostring(var_skip_small)
local cached = obf_cache and obf_cache:get(cache_key)
if cached then
ngx.arg[1] = cached
@@ -128,6 +130,25 @@ function _M.obf_html()
return
end
local var_skip = ngx.var.obf_skip_large
if var_skip then
local n = tonumber(var_skip) or 0
if n > 0 and #content > n then
ngx.arg[1] = content
ctx.obf_buffer = nil
return
end
end
local var_skip_s = ngx.var.obf_skip_small
if var_skip_s then
local ns = tonumber(var_skip_s) or 0
if ns > 0 and #content < ns then
ngx.arg[1] = content
ctx.obf_buffer = nil
return
end
end
local content,key,iv,tag = _M.obf_encode(content)
local content_data = util.to_uint8array(content or "")