From 1b88ec42b84c9ef25a5e643cdbb3a25eb7530a9b Mon Sep 17 00:00:00 2001
From: Alexey Melnichuk <mimir@newmail.ru>
Date: Thu, 11 Sep 2014 14:39:24 +0500
Subject: [PATCH 1/2] Fix. multi:info_read correctly remove easy handle.

---
 examples/cURLv3/multi2.lua | 35 +++++++++++++++++++++++++++++++++++
 src/lua/cURL/impl/cURL.lua | 11 ++++++++++-
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 examples/cURLv3/multi2.lua

diff --git a/examples/cURLv3/multi2.lua b/examples/cURLv3/multi2.lua
new file mode 100644
index 0000000..49850c2
--- /dev/null
+++ b/examples/cURLv3/multi2.lua
@@ -0,0 +1,35 @@
+local cURL = require("cURL")
+
+local f1 = io.open("lua.html",    "w+b")
+local f2 = io.open("luajit.html", "w+b")
+
+-- setup easy and url
+c1 = cURL.easy{url = "http://www.lua.org/", writefunction = f1}
+c2 = cURL.easy{url = "http://luajit.org/",  writefunction = f2}
+c3 = cURL.easy{url = "****://luajit.org/"} -- UNSUPPORTED_PROTOCOL
+
+m = cURL.multi()
+  :add_handle(c1)
+  :add_handle(c2)
+  :add_handle(c3)
+
+local remain = 3
+while remain > 0 do
+  local last = m:perform() -- do some work
+  if last < remain then    -- we have done some tasks
+    while true do          -- proceed results/errors
+      local e, ok, err = m:info_read(true) -- get result and remove handle
+      if e == 0 then break end -- no more finished tasks
+      if ok then -- succeed
+        print(e:getinfo_effective_url(), '-', e:getinfo_response_code())
+      else -- failure
+        print(e:getinfo_effective_url(), '-', err)
+      end
+      e:close()
+    end
+  end
+  remain = last
+
+  -- wait while libcurl do io select
+  m:wait()
+end
diff --git a/src/lua/cURL/impl/cURL.lua b/src/lua/cURL/impl/cURL.lua
index 401bae4..066d212 100644
--- a/src/lua/cURL/impl/cURL.lua
+++ b/src/lua/cURL/impl/cURL.lua
@@ -393,7 +393,16 @@ function Multi:remove_handle(e)
   return remove_handle(self, h)
 end
 
---! @fixme Multi:info_read(true) should also remove easy handle from self._easy
+function Multi:info_read(...)
+  local h, ok, err = self:handle():info_read(...)
+  if not h then return nil, ok end
+  if h == 0 then return h end
+
+  if ... and self._easy[h] then
+    self._easy[h], self._easy.n = nil, self._easy.n - 1
+  end
+  return h, ok, err
+end
 
 end
 -------------------------------------------

From fe66e7223b8d7e28089dc583870eaa2c5e33bf5c Mon Sep 17 00:00:00 2001
From: Alexey Melnichuk <mimir@newmail.ru>
Date: Thu, 11 Sep 2014 17:28:42 +0500
Subject: [PATCH 2/2] Add. `find_ca_bundle` function to `cURL.utils` module to
 find curl-ca-bundle.crt file

---
 .travis.yml                       |  1 +
 rockspecs/lua-curl-scm-0.rockspec |  1 +
 src/lua/cURL/utils.lua            | 69 +++++++++++++++++++++++++++++++
 3 files changed, 71 insertions(+)
 create mode 100644 src/lua/cURL/utils.lua

diff --git a/.travis.yml b/.travis.yml
index 5964e92..99a414e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,6 +26,7 @@ install:
 
 script: 
   - cd test
+  - lua -e "print(require 'cURL.utils'.find_ca_bundle())"
   - lunit.sh test_easy.lua
   - lunit.sh test_safe.lua
   - lunit.sh test_form.lua
diff --git a/rockspecs/lua-curl-scm-0.rockspec b/rockspecs/lua-curl-scm-0.rockspec
index b74f0ff..c5fb684 100644
--- a/rockspecs/lua-curl-scm-0.rockspec
+++ b/rockspecs/lua-curl-scm-0.rockspec
@@ -59,6 +59,7 @@ build = {
   modules = {
     ["cURL"           ] = "src/lua/cURL.lua",
     ["cURL.safe"      ] = "src/lua/cURL/safe.lua",
+    ["cURL.utils"     ] = "src/lua/cURL/utils.lua",
     ["cURL.impl.cURL" ] = "src/lua/cURL/impl/cURL.lua",
 
     lcurl = {
diff --git a/src/lua/cURL/utils.lua b/src/lua/cURL/utils.lua
new file mode 100644
index 0000000..438d7b2
--- /dev/null
+++ b/src/lua/cURL/utils.lua
@@ -0,0 +1,69 @@
+--- Returns path to cURL ca bundle
+--
+-- @tparam[opt="curl-ca-bundle.crt"] string name name of bundle
+-- @treturn string path to file (CURLOPT_CAINFO)
+-- @treturn string path to ssl dir path (CURLOPT_CAPATH)
+--
+-- @usage 
+--  local file, path = find_ca_bundle()
+--  if file then e:setopt_cainfo(file) end
+--  if path then e:setopt_capath(path) end
+--
+local function find_ca_bundle(name)
+  name = name or "curl-ca-bundle.crt"
+
+  local path  = require "path"
+  local env   = setmetatable({},{__index = function(_, name) return os.getenv(name) end})
+
+  local function split(str, sep, plain)
+    local b, res = 1, {}
+    while b <= #str do
+      local e, e2 = string.find(str, sep, b, plain)
+      if e then
+        table.insert(res, (string.sub(str, b, e-1)))
+        b = e2 + 1
+      else
+        table.insert(res, (string.sub(str, b)))
+        break
+      end
+    end
+    return res
+  end
+
+  if env.CURL_CA_BUNDLE and path.isfile(env.CURL_CA_BUNDLE) then
+    return env.CURL_CA_BUNDLE
+  end
+
+  if env.SSL_CERT_DIR and path.isdir(env.SSL_CERT_DIR) then
+    return false, env.SSL_CERT_DIR
+  end
+
+  if env.SSL_CERT_FILE and path.isfile(env.SSL_CERT_FILE) then
+    return env.SSL_CERT_FILE
+  end
+
+  if not path.IS_WINDOWS then return end
+
+  local paths = {
+    '.',
+    path.join(env.windir, "System32"),
+    path.join(env.windir, "SysWOW64"),
+    env.windir,
+  }
+  for _, p in ipairs(split(env.path, ';')) do paths[#paths + 1] = p end
+
+  for _, p in ipairs(paths) do
+    p = path.fullpath(p)
+    if path.isdir(p) then
+      p = path.join(p, name)
+      if path.isfile(p) then
+        return p
+      end
+    end
+  end
+end
+
+return {
+  find_ca_bundle = find_ca_bundle;
+}
+