prosody
77ac0d96ac24
util/jsonpointer.lua

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util/jsonpointer.lua @ 12206:77ac0d96ac24

mod_s2s: Enable outgoing Direct TLS connections Makes it faster by cutting out the roundtrips involved in <starttls/>, at the cost of making an additional SRV lookup. Since we already ignore a missing <starttls/> offer and try anyway there is not much difference in security. The fact that XMPP is used and the hostnames involved might still be visible until the future Encrypted ClientHello extension allows hiding those too.
author Kim Alvefur <zash@zash.se>
date Fri, 21 Jan 2022 17:59:19 +0100
parent 12131:b4c0efff8dd3
child 12496:87c3d45208ef
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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12131
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
Kim Alvefur <zash@zash.se>
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1 local function unescape_token(escaped_token)
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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2 local unescaped = escaped_token:gsub("~1", "/"):gsub("~0", "~")
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3 return unescaped
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4 end
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5
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6 local function resolve_json_pointer(ref, path)
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7 local ptr_len = #path + 1
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8 for part, pos in path:gmatch("/([^/]*)()") do
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9 local token = unescape_token(part)
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10 if not (type(ref) == "table") then
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11 return nil
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12 end
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13 local idx = next(ref)
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14 local new_ref
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15
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16 if type(idx) == "string" then
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17 new_ref = ref[token]
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18 elseif math.type(idx) == "integer" then
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19 local i = tonumber(token)
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20 if token == "-" then
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21 i = #ref + 1
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22 end
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23 new_ref = ref[i]
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24 else
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25 return nil, "invalid-table"
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26 end
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27
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28 if pos == ptr_len then
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29 return new_ref
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30 elseif type(new_ref) == "table" then
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31 ref = new_ref
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32 elseif not (type(ref) == "table") then
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33 return nil, "invalid-path"
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34 end
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35
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36 end
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37 return ref
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38 end
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39
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40 return { resolve = resolve_json_pointer }