1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
local M = {}
--- Reads trust database from $XDG_STATE_HOME/nvim/trust.
---
---@return table<string, string> Contents of trust database, if it exists. Empty table otherwise.
local function read_trust()
local trust = {} ---@type table<string, string>
local f = io.open(vim.fn.stdpath('state') .. '/trust', 'r')
if f then
local contents = f:read('*a')
if contents then
for line in vim.gsplit(contents, '\n') do
local hash, file = string.match(line, '^(%S+) (.+)$')
if hash and file then
trust[file] = hash
end
end
end
f:close()
end
return trust
end
--- Writes provided {trust} table to trust database at
--- $XDG_STATE_HOME/nvim/trust.
---
---@param trust table<string, string> Trust table to write
local function write_trust(trust)
vim.validate({ trust = { trust, 't' } })
local f = assert(io.open(vim.fn.stdpath('state') .. '/trust', 'w'))
local t = {} ---@type string[]
for p, h in pairs(trust) do
t[#t + 1] = string.format('%s %s\n', h, p)
end
f:write(table.concat(t))
f:close()
end
--- Attempt to read the file at {path} prompting the user if the file should be
--- trusted. The user's choice is persisted in a trust database at
--- $XDG_STATE_HOME/nvim/trust.
---
---@see |:trust|
---
---@param path (string) Path to a file to read.
---
---@return (string|nil) The contents of the given file if it exists and is
--- trusted, or nil otherwise.
function M.read(path)
vim.validate({ path = { path, 's' } })
local fullpath = vim.uv.fs_realpath(vim.fs.normalize(path))
if not fullpath then
return nil
end
local trust = read_trust()
if trust[fullpath] == '!' then
-- File is denied
return nil
end
local contents ---@type string?
do
local f = io.open(fullpath, 'r')
if not f then
return nil
end
contents = f:read('*a')
f:close()
end
local hash = vim.fn.sha256(contents)
if trust[fullpath] == hash then
-- File already exists in trust database
return contents
end
-- File either does not exist in trust database or the hash does not match
local ok, result = pcall(
vim.fn.confirm,
string.format('%s is not trusted.', fullpath),
'&ignore\n&view\n&deny\n&allow',
1
)
if not ok and result ~= 'Keyboard interrupt' then
error(result)
elseif not ok or result == 0 or result == 1 then
-- Cancelled or ignored
return nil
elseif result == 2 then
-- View
vim.cmd('sview ' .. fullpath)
return nil
elseif result == 3 then
-- Deny
trust[fullpath] = '!'
contents = nil
elseif result == 4 then
-- Allow
trust[fullpath] = hash
end
write_trust(trust)
return contents
end
--- @class vim.trust.opts
--- @inlinedoc
---
--- - `'allow'` to add a file to the trust database and trust it,
--- - `'deny'` to add a file to the trust database and deny it,
--- - `'remove'` to remove file from the trust database
--- @field action 'allow'|'deny'|'remove'
---
--- Path to a file to update. Mutually exclusive with {bufnr}.
--- Cannot be used when {action} is "allow".
--- @field path? string
--- Buffer number to update. Mutually exclusive with {path}.
--- @field bufnr? integer
--- Manage the trust database.
---
--- The trust database is located at |$XDG_STATE_HOME|/nvim/trust.
---
---@param opts vim.trust.opts
---@return boolean success true if operation was successful
---@return string msg full path if operation was successful, else error message
function M.trust(opts)
vim.validate({
path = { opts.path, 's', true },
bufnr = { opts.bufnr, 'n', true },
action = {
opts.action,
function(m)
return m == 'allow' or m == 'deny' or m == 'remove'
end,
[["allow" or "deny" or "remove"]],
},
})
---@cast opts vim.trust.opts
local path = opts.path
local bufnr = opts.bufnr
local action = opts.action
assert(not path or not bufnr, '"path" and "bufnr" are mutually exclusive')
if action == 'allow' then
assert(not path, '"path" is not valid when action is "allow"')
end
local fullpath ---@type string?
if path then
fullpath = vim.uv.fs_realpath(vim.fs.normalize(path))
elseif bufnr then
local bufname = vim.api.nvim_buf_get_name(bufnr)
if bufname == '' then
return false, 'buffer is not associated with a file'
end
fullpath = vim.uv.fs_realpath(vim.fs.normalize(bufname))
else
error('one of "path" or "bufnr" is required')
end
if not fullpath then
return false, string.format('invalid path: %s', path)
end
local trust = read_trust()
if action == 'allow' then
local newline = vim.bo[bufnr].fileformat == 'unix' and '\n' or '\r\n'
local contents =
table.concat(vim.api.nvim_buf_get_lines(bufnr --[[@as integer]], 0, -1, false), newline)
if vim.bo[bufnr].endofline then
contents = contents .. newline
end
local hash = vim.fn.sha256(contents)
trust[fullpath] = hash
elseif action == 'deny' then
trust[fullpath] = '!'
elseif action == 'remove' then
trust[fullpath] = nil
end
write_trust(trust)
return true, fullpath
end
return M
|
