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82 lines
2.2 KiB
82 lines
2.2 KiB
//
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// Copyright (c) 2019 Ted Unangst <tedu@tedunangst.com>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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package main
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import (
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"fmt"
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"regexp"
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"image"
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"image/png"
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"net/http"
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"strconv"
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"strings"
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"github.com/gorilla/mux"
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)
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func bloat_showflag(writer http.ResponseWriter, req *http.Request) {
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code := mux.Vars(req)["code"]
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colors := strings.Split(code, ",")
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numcolors := len(colors)
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h := (128 / numcolors) * numcolors
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w := h * 3 / 2
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img := image.NewRGBA(image.Rect(0, 0, w, h))
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for i := 0; i < h; i++ {
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hex := colors[i*numcolors/h]
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if len(hex) == 3 {
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hex = fmt.Sprintf("%c%c%c%c%c%c",
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hex[0], hex[0], hex[1], hex[1], hex[2], hex[2])
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}
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c, _ := strconv.ParseUint(hex, 16, 32)
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r := byte(c >> 16 & 0xff)
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g := byte(c >> 8 & 0xff)
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b := byte(c >> 0 & 0xff)
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for j := 0; j < w; j++ {
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p := i*img.Stride + j*4
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img.Pix[p+0] = r
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img.Pix[p+1] = g
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img.Pix[p+2] = b
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img.Pix[p+3] = 255
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}
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}
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png.Encode(writer, img)
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}
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var re_flags = regexp.MustCompile("flag:[[:alnum:],]+")
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func bloat_fixupflags(h *Honk) []Emu {
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var emus []Emu
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count := 0
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h.Noise = re_flags.ReplaceAllStringFunc(h.Noise, func(m string) string {
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count++
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var e Emu
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e.Name = fmt.Sprintf(":flag%d:", count)
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e.ID = fmt.Sprintf("https://%s/flag/%s", serverName, m[5:])
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emus = append(emus, e)
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return e.Name
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})
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return emus
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}
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func bloat_renderflags(h *Honk) {
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h.Noise = re_flags.ReplaceAllStringFunc(h.Noise, func(m string) string {
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code := m[5:]
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src := fmt.Sprintf("https://%s/flag/%s", serverName, code)
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return fmt.Sprintf(`<img class="emu" title="%s" src="%s">`, "flag", src)
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})
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}
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