增加验证码相关函数和库 并编写测试程序

conf/nginx.conf

@@ -13,7 +13,7 @@ http {
     client_max_body_size 1024M;      #允许最大100k的请求体
     client_body_buffer_size  1024M;   #设置缓冲区大小
 
-    lua_code_cache on; #代码缓存
+    #lua_code_cache on; #代码缓存
 
     lua_package_path '$prefix/src/?/?.lua;$prefix/src/?.lua;/home/frankly/work/AuthPlatform/src/?/?.lua;/home/frankly/work/AuthPlatform/src/?.lua;;';
     lua_package_cpath '$prefix/src/share/lib/?.so;/home/frankly/work/AuthPlatform/src/share/lib/?.so;;';

src/test/test.lua

@@ -31,6 +31,73 @@ local status = val or STATUS_CODE.UNKNOWN_ERROR
 local msg = status.message
 ngx.say("message:"..msg)
 
+local ok, gd = pcall(require, "gd")
+if not ok then
+    ngx.say("加载失败"..gd)
+    return
+end
+
+function enabled(res, desc)
+  local str = "    " .. desc .. " "
+  str = str .. string.rep(".", 37 - string.len(str))
+  if res then
+    print(str .. " Enabled")
+  else
+    print(str .. " Disabled")
+  end
+end
+
+print("Lua-GD version: " .. gd.VERSION)
+print("Lua-GD features:")
+
+--[[
+local gd = require("gd")
+local iSeed = os.time() + os.clock() * 10000
+math.randomseed(iSeed)
+
+function CheckCode(nChars, iWidth, iHeight)
+	local sTab = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+	local iTabLen = string.len(sTab)
+	local idx, x, y, clr
+	local im = gd.create(iWidth, iHeight)
+	im:colorAllocate(255, 255, 255) -- background color
+	for i=1, nChars do
+		clr = im:colorAllocate(math.random(0, 100), math.random(0, 150), math.random(0, 200))
+		idx = math.random(1, iTabLen)
+		x = math.random(1, 8) + iWidth * (i-1) / 4
+		y = math.random(1, iHeight / 4)
+		im:string(gd.FONT_LARGE, x, y, string.sub(sTab, idx, idx), clr)
+	end
+	for i=1, 3 do
+		clr = im:colorAllocate(math.random(0, 255), math.random(0, 255), math.random(0, 255))
+		im:line(math.random(1, iWidth), math.random(1, iHeight), math.random(1, iWidth), math.random(1, iHeight), clr)
+	end
+	return im
+end
+
+local im = CheckCode(4, 60, 20)
+print("Content-type: image/png")
+print("Pragma: no-cache")
+print("Expires: Thu Jan 01 00:00:00 UTC 1970")
+print("")
+io.write(im:pngStr())
+--]]
+
+--[[
+local genpic = require("util.generatechaptcha")
+local filename, fp = genpic.getChaptcha()
+--redis中添加picgid为key,string为value的记录
+--setRedis(filename, stringmark)
+
+--response header中传参picgid
+ngx.header.content_type = "text/plain"
+ngx.header.picgid = filename
+--页面返回pic
+ngx.say(fp)
+--nginx退出
+ngx.exit(200)
+--]]
+do return end
 
 --local openssl = require("openssl")
 --

src/util/generatechaptcha.lua

@@ -4,69 +4,63 @@
 --- DateTime: 2025/11/19 20:18
 --- 生成校验码图片
 
---设置随机种子
-local resty_uuid = require("resty.uuid")
-math.randomseed(tonumber(resty_uuid.gennum20()))
-
---在32个备选字符中随机筛选4个作为captcha字符串
-local dict={'A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y','Z','2','3','4','5','6','7','8','9'}
-local stringmark = ""
-for i = 1, 4 do
-    stringmark = stringmark..dict[math.random(1,32)]
-end
-
---图片基本info
---picgid
-local filename = "1"..resty_uuid.gen20()..".png"
---图片78x26
-local xsize = 78
-local ysize = 26
---字体大小
-local wsize = 17.5
---干扰线(yes/no)
-local line = "yes"
-
 --加载模块
 local gd = require('gd')
---创建面板
-local im = gd.createTrueColor(xsize, ysize)
---定义颜色
-local black = im:colorAllocate(0, 0, 0)
-local grey = im:colorAllocate(202, 202, 202)
-local color = {}
-for c = 1, 100 do
-    color[c] = im:colorAllocate(math.random(100), math.random(100), math.random(100))
-end
---画背景
-x, y = im:sizeXY()
-im:filledRectangle(0, 0, x, y, grey)
---画字符
-gd.useFontConfig(true)
-for i = 1, 4 do
-    k = (i - 1) * 16 + 3
-    im:stringFT(color[math.random(100)], "Arial:bold", wsize, math.rad(math.random(-10,10)), k, 22, string.sub(stringmark, i, i))
-end
---干扰线点
-if line == "yes" then
-    for j = 1, math.random(3) do
-        im:line(math.random(xsize), math.random(ysize), math.random(xsize), math.random(ysize), color[math.random(100)])
+local uuid = require("util.uuid")
+
+local _M = {}
+--在32个备选字符中随机筛选4个作为captcha字符串
+local dict = {'A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y','Z','2','3','4','5','6','7','8','9'}
+
+function _M.getChaptcha()
+    local stringmark = ""
+    for i = 1, 4 do
+        stringmark = stringmark..dict[math.random(1,32)]
     end
-    for p = 1, 20 do
-        im:setPixel(math.random(xsize), math.random(ysize), color[math.random(100)])
+
+    --图片基本info
+
+    local uid = uuid.generateUuid()
+    --picgid
+    local filename = "1"..uuid..".png"
+    --图片78x26
+    local xsize = 78
+    local ysize = 26
+    --字体大小
+    local wsize = 17.5
+    --干扰线(yes/no)
+    local line = "yes"
+
+    --创建面板
+    local im = gd.createTrueColor(xsize, ysize)
+    --定义颜色
+    local black = im:colorAllocate(0, 0, 0)
+    local grey = im:colorAllocate(202, 202, 202)
+    local color = {}
+    for c = 1, 100 do
+        color[c] = im:colorAllocate(math.random(100), math.random(100), math.random(100))
     end
+    --画背景
+    x, y = im:sizeXY()
+    im:filledRectangle(0, 0, x, y, grey)
+    --画字符
+    gd.useFontConfig(true)
+    for i = 1, 4 do
+        k = (i - 1) * 16 + 3
+        im:stringFT(color[math.random(100)], "Arial:bold", wsize, math.rad(math.random(-10,10)), k, 22, string.sub(stringmark, i, i))
+    end
+    --干扰线点
+    if line == "yes" then
+        for j = 1, math.random(3) do
+            im:line(math.random(xsize), math.random(ysize), math.random(xsize), math.random(ysize), color[math.random(100)])
+        end
+        for p = 1, 20 do
+            im:setPixel(math.random(xsize), math.random(ysize), color[math.random(100)])
+        end
+    end
+    --流输出
+    local fp = im:pngStr(75)
+    return filename, fp
 end
---流输出
-local fp = im:pngStr(75)
 
---redis中添加picgid为key,string为value的记录
---setRedis(filename, stringmark)
-
---response header中传参picgid
-ngx.header.content_type = "text/plain"
-ngx.header.picgid = filename
-
---页面返回pic
-ngx.say(fp)
-
---nginx退出
-ngx.exit(200)
+return _M