prosody
0b01f40df0f9
spec/util_strbitop_spec.lua

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spec/util_strbitop_spec.lua @ 13854:0b01f40df0f9 13.0

mod_http_file_share: Add media-src 'self' to Content-Security-Policy header This allows certain media files to be loaded when navigated to directly in a web browser. Note that in some browsers (Chrome), the media gets transformed internally into a HTML page with some basic styles, but these are blocked due to our default-src policy of 'none' Although this could be unblocked with style-src unsafe-inline, it is not our plan to fix this, because this would have negative security implications. The reason for our CSP is to prevent the file share service from being used to host malicious HTML/CSS/JS. Yes, CSS can be malicious. Our file share service is for uploading and downloading files, it is not a substitute for website/content hosting.
author Matthew Wild <mwild1@gmail.com>
date Fri, 18 Apr 2025 12:25:06 +0100
parent 13430:1a5e3cf037f6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
11168
cde600e2fdf9 util.strbitop: Add tests covering basics
Kim Alvefur <zash@zash.se>
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1 local strbitop = require "util.strbitop";
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2 describe("util.strbitop", function ()
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3 describe("sand()", function ()
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4 it("works", function ()
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5 assert.equal(string.rep("Aa", 100), strbitop.sand(string.rep("a", 200), "Aa"));
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6 end);
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7 it("returns empty string if first argument is empty", function ()
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8 assert.equal("", strbitop.sand("", ""));
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9 assert.equal("", strbitop.sand("", "key"));
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10 end);
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11 it("returns initial string if key is empty", function ()
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12 assert.equal("hello", strbitop.sand("hello", ""));
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13 end);
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14 end);
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15
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16 describe("sor()", function ()
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17 it("works", function ()
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18 assert.equal(string.rep("a", 200), strbitop.sor(string.rep("Aa", 100), "a"));
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19 end);
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20 it("returns empty string if first argument is empty", function ()
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21 assert.equal("", strbitop.sor("", ""));
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22 assert.equal("", strbitop.sor("", "key"));
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23 end);
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24 it("returns initial string if key is empty", function ()
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25 assert.equal("hello", strbitop.sor("hello", ""));
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26 end);
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27 end);
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28
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29 describe("sxor()", function ()
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30 it("works", function ()
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31 assert.equal(string.rep("Aa", 100), strbitop.sxor(string.rep("a", 200), " \0"));
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32 end);
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33 it("returns empty string if first argument is empty", function ()
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34 assert.equal("", strbitop.sxor("", ""));
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35 assert.equal("", strbitop.sxor("", "key"));
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36 end);
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37 it("returns initial string if key is empty", function ()
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38 assert.equal("hello", strbitop.sxor("hello", ""));
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39 end);
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40 end);
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41
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42 describe("common_prefix_bits()", function ()
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43 local function B(s)
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44 assert(#s%8==0, "Invalid test input: B(s): s should be a multiple of 8 bits in length");
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45 local byte = 0;
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46 local out_str = {};
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47 for i = 1, #s do
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48 local bit_ascii = s:byte(i);
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49 if bit_ascii == 49 then -- '1'
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50 byte = byte + 2^((7-(i-1))%8);
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51 elseif bit_ascii ~= 48 then
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52 error("Invalid test input: B(s): s should contain only '0' or '1' characters");
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53 end
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54 if (i-1)%8 == 7 then
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55 table.insert(out_str, string.char(byte));
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56 byte = 0;
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57 end
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58 end
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59 return table.concat(out_str);
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60 end
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61
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62 local _cpb = strbitop.common_prefix_bits;
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63 local function test(a, b)
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64 local Ba, Bb = B(a), B(b);
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65 local ret1 = _cpb(Ba, Bb);
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66 local ret2 = _cpb(Bb, Ba);
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67 assert(ret1 == ret2, ("parameter order should not make a difference to the result (%s, %s) = %d, reversed = %d"):format(a, b, ret1, ret2));
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68 return ret1;
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69 end
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70
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71 it("works on single bytes", function ()
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72 assert.equal(0, test("00000000", "11111111"));
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73 assert.equal(1, test("10000000", "11111111"));
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74 assert.equal(0, test("01000000", "11111111"));
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75 assert.equal(0, test("01000000", "11111111"));
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76 assert.equal(8, test("11111111", "11111111"));
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77 end);
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78
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79 it("works on multiple bytes", function ()
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80 for i = 0, 16 do
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81 assert.equal(i, test(string.rep("1", i)..string.rep("0", 16-i), "1111111111111111"));
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82 end
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83 end);
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84 end);
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85 end);