prosody
5f182bccf33f
util-src/strbitop.c

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util-src/strbitop.c @ 12686:5f182bccf33f

mod_component: Require 'from' attribute on stanzas by default The old behaviour of falling back to the component domain when it is missing has been merged into the logic for the existing "validate_from_addresses" option (which is strict by default). ejabberd already rejects component stanzas with no 'from' (as the XEP requires), and this has led to compatibility issues for components that were seemingly working fine with Prosody.
author Matthew Wild <mwild1@gmail.com>
date Sun, 28 Aug 2022 07:51:50 +0100
parent 12575:1f6f05a98fcd
child 12976:a187600ec7d6
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1 /*
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2 * This project is MIT licensed. Please see the
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3 * COPYING file in the source package for more information.
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4 *
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5 * Copyright (C) 2016 Kim Alvefur
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6 */
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7
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8 #include <lua.h>
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9 #include <lauxlib.h>
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10
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11
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12 /* TODO Deduplicate code somehow */
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13
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14 static int strop_and(lua_State *L) {
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15 luaL_Buffer buf;
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16 size_t a, b, i;
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17 const char *str_a = luaL_checklstring(L, 1, &a);
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18 const char *str_b = luaL_checklstring(L, 2, &b);
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19
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20 luaL_buffinit(L, &buf);
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21
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22 if(a == 0 || b == 0) {
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23 lua_settop(L, 1);
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24 return 1;
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25 }
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26
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27 for(i = 0; i < a; i++) {
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28 luaL_addchar(&buf, str_a[i] & str_b[i % b]);
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29 }
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30
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31 luaL_pushresult(&buf);
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32 return 1;
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33 }
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34
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35 static int strop_or(lua_State *L) {
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36 luaL_Buffer buf;
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37 size_t a, b, i;
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38 const char *str_a = luaL_checklstring(L, 1, &a);
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39 const char *str_b = luaL_checklstring(L, 2, &b);
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40
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41 luaL_buffinit(L, &buf);
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42
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43 if(a == 0 || b == 0) {
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44 lua_settop(L, 1);
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45 return 1;
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46 }
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47
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48 for(i = 0; i < a; i++) {
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49 luaL_addchar(&buf, str_a[i] | str_b[i % b]);
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50 }
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51
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52 luaL_pushresult(&buf);
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53 return 1;
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54 }
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55
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56 static int strop_xor(lua_State *L) {
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57 luaL_Buffer buf;
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58 size_t a, b, i;
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59 const char *str_a = luaL_checklstring(L, 1, &a);
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60 const char *str_b = luaL_checklstring(L, 2, &b);
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61
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62 luaL_buffinit(L, &buf);
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63
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64 if(a == 0 || b == 0) {
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65 lua_settop(L, 1);
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66 return 1;
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67 }
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68
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69 for(i = 0; i < a; i++) {
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70 luaL_addchar(&buf, str_a[i] ^ str_b[i % b]);
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71 }
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72
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73 luaL_pushresult(&buf);
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74 return 1;
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75 }
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76
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77 LUA_API int luaopen_util_strbitop(lua_State *L) {
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78 luaL_Reg exports[] = {
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79 { "sand", strop_and },
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80 { "sor", strop_or },
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81 { "sxor", strop_xor },
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82 { NULL, NULL }
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83 };
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84
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85 lua_newtable(L);
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86 luaL_setfuncs(L, exports, 0);
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87 return 1;
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88 }