From d548a78e5516bcc85d44f1d419cf53c71d6dcd79 Mon Sep 17 00:00:00 2001
From: Diego Nehab <diego@fresnel.local>
Date: Thu, 10 Jan 2013 01:10:34 -0200
Subject: [PATCH] Cookie modifications.

---
 .gitignore      |  1 +
 etc/cookie.lua  | 88 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/headers.lua |  1 +
 3 files changed, 90 insertions(+)
 create mode 100644 etc/cookie.lua

diff --git a/.gitignore b/.gitignore
index 2d37568..0e0b11f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,5 @@
 *.so.*
 macosx.cmd
 win32.cmd
+linux.cmd
 
diff --git a/etc/cookie.lua b/etc/cookie.lua
new file mode 100644
index 0000000..4adb403
--- /dev/null
+++ b/etc/cookie.lua
@@ -0,0 +1,88 @@
+local socket = require"socket"
+local http = require"socket.http"
+local url = require"socket.url"
+local ltn12 = require"ltn12"
+
+local token_class =  '[^%c%s%(%)%<%>%@%,%;%:%\\%"%/%[%]%?%=%{%}]'
+
+local function unquote(t, quoted) 
+    local n = string.match(t, "%$(%d+)$")
+    if n then n = tonumber(n) end
+    if quoted[n] then return quoted[n]
+    else return t end
+end
+
+local function parse_set_cookie(c, quoted, cookie_table)
+    c = c .. ";$last=last;"
+    local _, __, n, v, i = string.find(c, "(" .. token_class .. 
+        "+)%s*=%s*(.-)%s*;%s*()")
+    local cookie = {
+        name = n, 
+        value = unquote(v, quoted), 
+        attributes = {}
+    }
+    while 1 do
+        _, __, n, v, i = string.find(c, "(" .. token_class .. 
+            "+)%s*=?%s*(.-)%s*;%s*()", i)
+        if not n or n == "$last" then break end
+        cookie.attributes[#cookie.attributes+1] = {
+            name = n, 
+            value = unquote(v, quoted)
+        }
+    end
+    cookie_table[#cookie_table+1] = cookie
+end
+
+local function split_set_cookie(s, cookie_table)
+    cookie_table = cookie_table or {}
+    -- remove quoted strings from cookie list
+    local quoted = {}
+    s = string.gsub(s, '"(.-)"', function(q)
+        quoted[#quoted+1] = q
+        return "$" .. #quoted
+    end)
+    -- add sentinel
+    s = s .. ",$last="
+    -- split into individual cookies
+    i = 1
+    while 1 do
+        local _, __, cookie, next_token
+        _, __, cookie, i, next_token = string.find(s, "(.-)%s*%,%s*()(" .. 
+            token_class .. "+)%s*=", i)
+        if not next_token then break end
+        parse_set_cookie(cookie, quoted, cookie_table)
+        if next_token == "$last" then break end
+    end
+    return cookie_table
+end
+
+local function quote(s)
+    if string.find(s, "[ %,%;]") then return '"' .. s .. '"'
+    else return s end
+end
+
+local _empty = {}
+local function build_cookies(cookies) 
+    s = ""
+    for i,v in ipairs(cookies or _empty) do
+        if v.name then
+            s = s .. v.name
+            if v.value and v.value ~= "" then 
+                s = s .. '=' .. quote(v.value)
+            end
+        end
+        if v.name and #(v.attributes or _empty) > 0 then s = s .. "; "  end
+        for j,u in ipairs(v.attributes or _empty) do
+            if u.name then
+                s = s .. u.name
+                if u.value and u.value ~= "" then
+                    s = s .. '=' .. quote(u.value)
+                end
+            end
+            if j < #v.attributes then s = s .. "; "  end
+        end
+        if i < #cookies then s = s .. ", " end
+    end
+    return s 
+end
+
diff --git a/src/headers.lua b/src/headers.lua
index 41794ba..a293329 100644
--- a/src/headers.lua
+++ b/src/headers.lua
@@ -33,6 +33,7 @@ canonic = {
     ["content-range"] = "Content-Range",
     ["content-transfer-encoding"] = "Content-Transfer-Encoding",
     ["content-type"] = "Content-Type",
+    ["cookie"] = "Cookie",
     ["date"] = "Date",
     ["diagnostic-code"] = "Diagnostic-Code",
     ["dsn-gateway"] = "DSN-Gateway",