Fastfix for previous two commits (sorry) and chroma update.

Well, doing "git add ." not from repository's root is a bad idea.

Updated chroma dependency, added more languages to syntax highlighting.

internal/captcha/exported.go

@@ -0,0 +1,62 @@
+// Fast Paste Bin - uberfast and easy-to-use pastebin.
+//
+// Copyright (c) 2018, Stanislav N. aka pztrn and Fast Paste Bin
+// developers.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject
+// to the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
+// OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package captcha
+
+import (
+	// local
+	"gitlab.com/pztrn/fastpastebin/internal/context"
+
+	// other
+	"github.com/dchest/captcha"
+	"github.com/labstack/echo"
+	"github.com/rs/zerolog"
+)
+
+var (
+	c   *context.Context
+	log zerolog.Logger
+)
+
+// New initializes captcha package and adds neccessary HTTP and API
+// endpoints.
+func New(cc *context.Context) {
+	c = cc
+	log = c.Logger.With().Str("type", "internal").Str("package", "captcha").Logger()
+
+	// New paste.
+	c.Echo.GET("/captcha/:id.png", echo.WrapHandler(captcha.Server(captcha.StdWidth, captcha.StdHeight)))
+}
+
+// NewCaptcha creates new captcha string.
+func NewCaptcha() string {
+	s := captcha.New()
+	log.Debug().Str("captcha string", s).Msg("Created new captcha string")
+	return s
+}
+
+// Verify verifies captchas.
+func Verify(captchaString string, captchaSolution string) bool {
+	return captcha.VerifyString(captchaString, captchaSolution)
+}