Mercurial > prosody-hg

annotate util/jsonpointer.lua @ 12433:3dfcdcab5446 0.12

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MUC: Allow kicking users with the same affiliation as the kicker (fixes #1724) This is allowed by XEP-0045, which states: "A moderator SHOULD NOT be allowed to revoke moderation privileges from someone with a higher affiliation than themselves (i.e., an unaffiliated moderator SHOULD NOT be allowed to revoke moderation privileges from an admin or an owner, and an admin SHOULD NOT be allowed to revoke moderation privileges from an owner)."
author Matthew Wild <mwild1@gmail.com>
date Wed, 23 Mar 2022 13:38:55 +0000
parents b4c0efff8dd3
children 87c3d45208ef
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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
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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6 local function resolve_json_pointer(ref, path)
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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7 local ptr_len = #path + 1
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8 for part, pos in path:gmatch("/([^/]*)()") do
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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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
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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16 if type(idx) == "string" then
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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17 new_ref = ref[token]
b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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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 }