Annotate

util/jsonpointer.lua @ 12493:e9ea5c88def0

mod_s2s: Don't bounce queued error stanzas (thanks Martin) The check for the type attr was lost in 11765f0605ec leading to attempts to create error replies for error stanzas, which util.stanza rejects. Tested by sending <message to="reject.badxmpp.eu" type="error"><error/></message> which produced a traceback previously.
author Kim Alvefur <zash@zash.se>
date Sat, 07 May 2022 13:01:49 +0200
parent 12131:b4c0efff8dd3
child 12496:87c3d45208ef
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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b4c0efff8dd3 util.jsonpointer: Resolve JSON Pointers per RFC 6901
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1 local function unescape_token(escaped_token)
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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 }