prosody
bb8486491b48
util/random.lua

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

Software / code / prosody

Annotate

util/random.lua @ 9643:bb8486491b48 0.10.3

mod_proxy65: Check what port is used at the time of the query Could have changed between startup and time of request
author Kim Alvefur <zash@zash.se>
date Sun, 25 Nov 2018 13:16:17 +0100
parent 8242:177873dc9cf3
child 8243:292f61d9d30a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
6376
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1 -- Prosody IM
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
2 -- Copyright (C) 2008-2014 Matthew Wild
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
3 -- Copyright (C) 2008-2014 Waqas Hussain
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
4 --
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
5 -- This project is MIT/X11 licensed. Please see the
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
6 -- COPYING file in the source package for more information.
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
7 --
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
8
7187
3d2c2f0809ee util.crand: C binding to one of OpenSSL, Linux getrandom() or OpenBSD arc4random() CSPRNG
Kim Alvefur <zash@zash.se>
parents: 7114
diff changeset
9 local ok, crand = pcall(require, "util.crand");
3d2c2f0809ee util.crand: C binding to one of OpenSSL, Linux getrandom() or OpenBSD arc4random() CSPRNG
Kim Alvefur <zash@zash.se>
parents: 7114
diff changeset
10 if ok then return crand; end
3d2c2f0809ee util.crand: C binding to one of OpenSSL, Linux getrandom() or OpenBSD arc4random() CSPRNG
Kim Alvefur <zash@zash.se>
parents: 7114
diff changeset
11
7114
51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
Kim Alvefur <zash@zash.se>
parents: 7083
diff changeset
12 local urandom, urandom_err = io.open("/dev/urandom", "r");
6376
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13
7083
ac920b0f9eae util.random: Open /dev/urandom read-only, make seed() a noop
Kim Alvefur <zash@zash.se>
parents: 7050
diff changeset
14 local function seed()
6376
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
15 end
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17 local function bytes(n)
7050
ae044691de0f util.random: Use /dev/urandom
Kim Alvefur <zash@zash.se>
parents: 6421
diff changeset
18 return urandom:read(n);
6376
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
19 end
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
20
7114
51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
Kim Alvefur <zash@zash.se>
parents: 7083
diff changeset
21 if not urandom then
51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
Kim Alvefur <zash@zash.se>
parents: 7083
diff changeset
22 function bytes()
51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
Kim Alvefur <zash@zash.se>
parents: 7083
diff changeset
23 error("Unable to obtain a secure random number generator, please see https://prosody.im/doc/random ("..urandom_err..")");
51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
Kim Alvefur <zash@zash.se>
parents: 7083
diff changeset
24 end
51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
Kim Alvefur <zash@zash.se>
parents: 7083
diff changeset
25 end
51cf09bb74eb util.random: Restore friendlier error from 0.9/util.uuid
Kim Alvefur <zash@zash.se>
parents: 7083
diff changeset
26
6376
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
27 return {
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
28 seed = seed;
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
29 bytes = bytes;
8242
177873dc9cf3 util.random: Add a _source field to match util.crand
Kim Alvefur <zash@zash.se>
parents: 7187
diff changeset
30 _source = "/dev/urandom";
6376
bd812a7713ad util.random: Generic util lib for generating strings of random bytes
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
31 };