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-- Copyright (C) Yichun Zhang (agentzh) local ffi = require "ffi" local base = require "resty.core.base" local C = ffi.C local ffi_string = ffi.string local ngx = ngx local type = type local error = error local tostring = tostring local get_string_buf = base.get_string_buf local subsystem = ngx.config.subsystem local ngx_lua_ffi_escape_uri local ngx_lua_ffi_unescape_uri local ngx_lua_ffi_uri_escaped_length local NGX_ESCAPE_URI = 0 local NGX_ESCAPE_URI_COMPONENT = 2 local NGX_ESCAPE_MAIL_AUTH = 6 if subsystem == "http" then ffi.cdef[[ size_t ngx_http_lua_ffi_uri_escaped_length(const unsigned char *src, size_t len, int type); void ngx_http_lua_ffi_escape_uri(const unsigned char *src, size_t len, unsigned char *dst, int type); size_t ngx_http_lua_ffi_unescape_uri(const unsigned char *src, size_t len, unsigned char *dst); ]] ngx_lua_ffi_escape_uri = C.ngx_http_lua_ffi_escape_uri ngx_lua_ffi_unescape_uri = C.ngx_http_lua_ffi_unescape_uri ngx_lua_ffi_uri_escaped_length = C.ngx_http_lua_ffi_uri_escaped_length elseif subsystem == "stream" then ffi.cdef[[ size_t ngx_stream_lua_ffi_uri_escaped_length(const unsigned char *src, size_t len, int type); void ngx_stream_lua_ffi_escape_uri(const unsigned char *src, size_t len, unsigned char *dst, int type); size_t ngx_stream_lua_ffi_unescape_uri(const unsigned char *src, size_t len, unsigned char *dst); ]] ngx_lua_ffi_escape_uri = C.ngx_stream_lua_ffi_escape_uri ngx_lua_ffi_unescape_uri = C.ngx_stream_lua_ffi_unescape_uri ngx_lua_ffi_uri_escaped_length = C.ngx_stream_lua_ffi_uri_escaped_length end ngx.escape_uri = function (s, esc_type) if type(s) ~= 'string' then if not s then s = '' else s = tostring(s) end end if esc_type == nil then esc_type = NGX_ESCAPE_URI_COMPONENT else if type(esc_type) ~= 'number' then error("\"type\" is not a number", 3) end if esc_type < NGX_ESCAPE_URI or esc_type > NGX_ESCAPE_MAIL_AUTH then error("\"type\" " .. esc_type .. " out of range", 3) end end local slen = #s local dlen = ngx_lua_ffi_uri_escaped_length(s, slen, esc_type) -- print("dlen: ", tonumber(dlen)) if dlen == slen then return s end local dst = get_string_buf(dlen) ngx_lua_ffi_escape_uri(s, slen, dst, esc_type) return ffi_string(dst, dlen) end ngx.unescape_uri = function (s) if type(s) ~= 'string' then if not s then s = '' else s = tostring(s) end end local slen = #s local dlen = slen local dst = get_string_buf(dlen) dlen = ngx_lua_ffi_unescape_uri(s, slen, dst) return ffi_string(dst, dlen) end return { version = base.version, }
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