prosody
26a004c96ef8
util-src/strbitop.c

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

util-src/strbitop.c @ 12694:26a004c96ef8

util.paseto: Implementation of PASETO v4.public tokens PASETO provides an alternative to JWT with the promise of fewer implementation pitfalls. The v4.public algorithm allows asymmetric cryptographically-verified token issuance and validation. In summary, such tokens can be issued by one party and securely verified by any other party independently using the public key of the issuer. This has a number of potential applications in a decentralized network and ecosystem such as XMPP. For example, such tokens could be combined with XEP-0317 to allow hats to be verified even in the context of a third-party MUC service.
author Matthew Wild <mwild1@gmail.com>
date Fri, 24 Jun 2022 17:03:28 +0100
parent 12575:1f6f05a98fcd
child 12976:a187600ec7d6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 /*
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
2 * This project is MIT licensed. Please see the
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
3 * COPYING file in the source package for more information.
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
4 *
11172
712b2e6a09d9 Back out 6dde2c9fa272: Doesn't work on Lua 5.1
Kim Alvefur <zash@zash.se>
parents: 11171
diff changeset
5 * Copyright (C) 2016 Kim Alvefur
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
6 */
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
7
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
8 #include <lua.h>
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
9 #include <lauxlib.h>
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
10
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
11
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
12 /* TODO Deduplicate code somehow */
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
13
12469
2b3adaa6d38e util.strbitop: Reduce scope of functions
Kim Alvefur <zash@zash.se>
parents: 11175
diff changeset
14 static int strop_and(lua_State *L) {
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
15 luaL_Buffer buf;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16 size_t a, b, i;
11167
ba32b9a6d75b util.strbitop: Reformat code
Kim Alvefur <zash@zash.se>
parents: 11163
diff changeset
17 const char *str_a = luaL_checklstring(L, 1, &a);
ba32b9a6d75b util.strbitop: Reformat code
Kim Alvefur <zash@zash.se>
parents: 11163
diff changeset
18 const char *str_b = luaL_checklstring(L, 2, &b);
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
19
11175
235537247aa3 Back out changeset 2c1583bb0e0f
Kim Alvefur <zash@zash.se>
parents: 11172
diff changeset
20 luaL_buffinit(L, &buf);
235537247aa3 Back out changeset 2c1583bb0e0f
Kim Alvefur <zash@zash.se>
parents: 11172
diff changeset
21
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
22 if(a == 0 || b == 0) {
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
23 lua_settop(L, 1);
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
24 return 1;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
25 }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
26
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
27 for(i = 0; i < a; i++) {
11172
712b2e6a09d9 Back out 6dde2c9fa272: Doesn't work on Lua 5.1
Kim Alvefur <zash@zash.se>
parents: 11171
diff changeset
28 luaL_addchar(&buf, str_a[i] & str_b[i % b]);
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
29 }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
30
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
31 luaL_pushresult(&buf);
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
32 return 1;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
33 }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
34
12469
2b3adaa6d38e util.strbitop: Reduce scope of functions
Kim Alvefur <zash@zash.se>
parents: 11175
diff changeset
35 static int strop_or(lua_State *L) {
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
36 luaL_Buffer buf;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
37 size_t a, b, i;
11167
ba32b9a6d75b util.strbitop: Reformat code
Kim Alvefur <zash@zash.se>
parents: 11163
diff changeset
38 const char *str_a = luaL_checklstring(L, 1, &a);
ba32b9a6d75b util.strbitop: Reformat code
Kim Alvefur <zash@zash.se>
parents: 11163
diff changeset
39 const char *str_b = luaL_checklstring(L, 2, &b);
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
40
11175
235537247aa3 Back out changeset 2c1583bb0e0f
Kim Alvefur <zash@zash.se>
parents: 11172
diff changeset
41 luaL_buffinit(L, &buf);
235537247aa3 Back out changeset 2c1583bb0e0f
Kim Alvefur <zash@zash.se>
parents: 11172
diff changeset
42
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
43 if(a == 0 || b == 0) {
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
44 lua_settop(L, 1);
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
45 return 1;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
46 }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
47
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
48 for(i = 0; i < a; i++) {
11172
712b2e6a09d9 Back out 6dde2c9fa272: Doesn't work on Lua 5.1
Kim Alvefur <zash@zash.se>
parents: 11171
diff changeset
49 luaL_addchar(&buf, str_a[i] | str_b[i % b]);
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
50 }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
51
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
52 luaL_pushresult(&buf);
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
53 return 1;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
54 }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
55
12469
2b3adaa6d38e util.strbitop: Reduce scope of functions
Kim Alvefur <zash@zash.se>
parents: 11175
diff changeset
56 static int strop_xor(lua_State *L) {
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
57 luaL_Buffer buf;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
58 size_t a, b, i;
11167
ba32b9a6d75b util.strbitop: Reformat code
Kim Alvefur <zash@zash.se>
parents: 11163
diff changeset
59 const char *str_a = luaL_checklstring(L, 1, &a);
ba32b9a6d75b util.strbitop: Reformat code
Kim Alvefur <zash@zash.se>
parents: 11163
diff changeset
60 const char *str_b = luaL_checklstring(L, 2, &b);
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
61
11172
712b2e6a09d9 Back out 6dde2c9fa272: Doesn't work on Lua 5.1
Kim Alvefur <zash@zash.se>
parents: 11171
diff changeset
62 luaL_buffinit(L, &buf);
712b2e6a09d9 Back out 6dde2c9fa272: Doesn't work on Lua 5.1
Kim Alvefur <zash@zash.se>
parents: 11171
diff changeset
63
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
64 if(a == 0 || b == 0) {
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
65 lua_settop(L, 1);
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
66 return 1;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
67 }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
68
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
69 for(i = 0; i < a; i++) {
11172
712b2e6a09d9 Back out 6dde2c9fa272: Doesn't work on Lua 5.1
Kim Alvefur <zash@zash.se>
parents: 11171
diff changeset
70 luaL_addchar(&buf, str_a[i] ^ str_b[i % b]);
11163
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
71 }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
72
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
73 luaL_pushresult(&buf);
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
74 return 1;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
75 }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
76
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
77 LUA_API int luaopen_util_strbitop(lua_State *L) {
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
78 luaL_Reg exports[] = {
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
79 { "sand", strop_and },
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
80 { "sor", strop_or },
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
81 { "sxor", strop_xor },
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
82 { NULL, NULL }
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
83 };
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
84
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
85 lua_newtable(L);
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
86 luaL_setfuncs(L, exports, 0);
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
87 return 1;
37a6a535343e util.strbitop: Library for bitwise operations on strings
Kim Alvefur <zash@zash.se>
parents:
diff changeset
88 }