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--[[
Copyright (c) 2022, Vsevolod Stakhov <vsevolod@rspamd.com>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
]]--
local argparse = require "argparse"
-- Define command line options
local parser = argparse()
:name "rspamadm grep"
:description "Search for patterns in rspamd logs"
:help_description_margin(30)
parser:mutex(
parser:option "-s --string"
:description('Plain string to search (case-insensitive)')
:argname "<str>",
parser:option "-p --pattern"
:description('Pattern to search for (regex)')
:argname "<re>"
)
parser:flag "-l --lua"
:description('Use Lua patterns in string search')
parser:argument "input":args "*"
:description('Process specified inputs')
:default("stdin")
parser:flag "-S --sensitive"
:description('Enable case-sensitivity in string search')
parser:flag "-o --orphans"
:description('Print orphaned logs')
parser:flag "-P --partial"
:description('Print partial logs')
local function handler(args)
local rspamd_regexp = require 'rspamd_regexp'
local res = parser:parse(args)
if not res['string'] and not res['pattern'] then
parser:error('string or pattern options must be specified')
end
if res['string'] and res['pattern'] then
parser:error('string and pattern options are mutually exclusive')
end
local buffer = {}
local matches = {}
local pattern = res['pattern']
local re
if pattern then
re = rspamd_regexp.create(pattern)
if not re then
io.stderr:write("Couldn't compile regex: " .. pattern .. '\n')
os.exit(1)
end
end
local plainm = true
if res['lua'] then
plainm = false
end
local orphans = res['orphans']
local search_str = res['string']
local sensitive = res['sensitive']
local partial = res['partial']
if search_str and not sensitive then
search_str = string.lower(search_str)
end
local inputs = res['input'] or {'stdin'}
for _, n in ipairs(inputs) do
local h, err
if string.match(n, '%.xz$') then
h, err = io.popen('xzcat ' .. n, 'r')
elseif string.match(n, '%.bz2$') then
h, err = io.popen('bzcat ' .. n, 'r')
elseif string.match(n, '%.gz$') then
h, err = io.popen('zcat ' .. n, 'r')
elseif string.match(n, '%.zst$') then
h, err = io.popen('zstdcat ' .. n, 'r')
elseif n == 'stdin' then
h = io.input()
else
h, err = io.open(n, 'r')
end
if not h then
if err then
io.stderr:write("Couldn't open file (" .. n .. '): ' .. err .. '\n')
else
io.stderr:write("Couldn't open file (" .. n .. '): no error\n')
end
else
for line in h:lines() do
local hash = string.match(line, '<(%x+)>')
local already_matching = false
if hash then
if matches[hash] then
table.insert(matches[hash], line)
already_matching = true
else
if buffer[hash] then
table.insert(buffer[hash], line)
else
buffer[hash] = {line}
end
end
end
local ismatch = false
if re then
ismatch = re:match(line)
elseif sensitive and search_str then
ismatch = string.find(line, search_str, 1, plainm)
elseif search_str then
local lwr = string.lower(line)
ismatch = string.find(lwr, search_str, 1, plainm)
end
if ismatch then
if not hash then
if orphans then
print('*** orphaned ***')
print(line)
print()
end
elseif not already_matching then
matches[hash] = buffer[hash]
end
end
local is_end = string.match(line, '<%x+>; task; rspamd_protocol_http_reply:')
if is_end then
buffer[hash] = nil
if matches[hash] then
for _, v in ipairs(matches[hash]) do
print(v)
end
print()
matches[hash] = nil
end
end
end
if partial then
for k, v in pairs(matches) do
print('*** partial ***')
for _, vv in ipairs(v) do
print(vv)
end
print()
matches[k] = nil
end
else
matches = {}
end
end
end
end
return {
handler = handler,
description = parser._description,
name = 'grep'
}
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