reddit-grab/reddit.lua
2021-01-14 16:54:55 +01:00

551 lines
18 KiB
Lua

dofile("table_show.lua")
dofile("urlcode.lua")
local urlparse = require("socket.url")
local http = require("socket.http")
JSON = (loadfile "JSON.lua")()
local item_names = os.getenv('item_names')
local item_dir = os.getenv('item_dir')
local warc_file_base = os.getenv('warc_file_base')
local item_types = {}
for s in string.gmatch(item_names, "([^\n]+)") do
local t, n = string.match(s, "^([^:]+):(.+)$")
item_types[n] = t
end
local item_type = nil
if urlparse == nil or http == nil then
io.stdout:write("socket not corrently installed.\n")
io.stdout:flush()
abortgrab = true
end
local url_count = 0
local tries = 0
local downloaded = {}
local addedtolist = {}
local abortgrab = false
local posts = {}
local requested_children = {}
local thumbs = {}
local outlinks = {}
for ignore in io.open("ignore-list", "r"):lines() do
downloaded[ignore] = true
end
load_json_file = function(file)
if file then
return JSON:decode(file)
else
return nil
end
end
read_file = function(file)
if file then
local f = assert(io.open(file))
local data = f:read("*all")
f:close()
return data
else
return ""
end
end
processed = function(url)
if downloaded[url] or addedtolist[url] then
return true
end
return false
end
allowed = function(url, parenturl)
local match = string.match(url, "^https?://[^%.]+%.thumbs%.redditmedia%.com/([^%.]+)%.")
if match
and parenturl
and string.match(parenturl, "^https?://www%.reddit%.com/api/info%.json%?id=") then
thumbs[match] = true
end
if match and not thumbs[match] then
return false
end
if string.match(url, "'+")
or string.match(urlparse.unescape(url), "[<>\\%$%^%[%]%(%){}]")
or string.match(url, "^https?://[^/]*reddit%.com/[^%?]+%?context=[0-9]+&depth=[0-9]+")
or string.match(url, "^https?://[^/]*reddit%.com/[^%?]+%?depth=[0-9]+&context=[0-9]+")
or string.match(url, "^https?://[^/]*reddit%.com/login")
or string.match(url, "^https?://[^/]*reddit%.com/register")
or string.match(url, "%?sort=")
or string.match(url, "%?limit=500$")
or string.match(url, "%?ref=readnext$")
or string.match(url, "^https?://[^/]*reddit%.app%.link/")
or string.match(url, "^https?://out%.reddit%.com/r/")
or string.match(url, "^https?://emoji%.redditmedia%.com/")
or string.match(url, "^https?://styles%.redditmedia%.com/")
or string.match(url, "^https?://old%.reddit%.com/gallery/")
or string.match(url, "^https?://old%.reddit%.com/gold%?")
or string.match(url, "^https?://[^%.]+%.redd%.it/award_images/")
or string.match(url, "^https?://[^/]+/over18.+dest=https%%3A%%2F%%2Fold%.reddit%.com")
or string.match(url, "^https?://old%.[^%?]+%?utm_source=reddit")
or (
string.match(url, "^https?://gateway%.reddit%.com/")
and not string.match(url, "/morecomments/")
)
or string.match(url, "/%.rss$")
or (
parenturl
and string.match(url, "^https?://amp%.reddit%.com/")
)
or (
item_type == "post"
and (
string.match(url, "^https?://[^/]*reddit%.com/r/[^/]+/comments/[0-9a-z]+/[^/]+/[0-9a-z]+/?$")
or string.match(url, "^https?://[^/]*reddit%.com/r/[^/]+/comments/[0-9a-z]+/[^/]+/[0-9a-z]+/?%?utm_source=")
)
)
or (
parenturl
and string.match(parenturl, "^https?://[^/]*reddit%.com/r/[^/]+/duplicates/")
and string.match(url, "^https?://[^/]*reddit%.com/r/[^/]+/duplicates/")
)
or (
parenturl
and string.match(parenturl, "^https?://[^/]*reddit%.com/user/[^/]+/duplicates/")
and string.match(url, "^https?://[^/]*reddit%.com/user/[^/]+/duplicates/")
) then
return false
end
local tested = {}
for s in string.gmatch(url, "([^/]+)") do
if tested[s] == nil then
tested[s] = 0
end
if tested[s] == 6 then
return false
end
tested[s] = tested[s] + 1
end
if not (
string.match(url, "^https?://[^/]*redd%.it/")
or string.match(url, "^https?://[^/]*reddit%.com/")
or string.match(url, "^https?://[^/]*redditmedia%.com/")
) then
if not string.match(url, "^https?://[^/]*redditstatic%.com/") then
outlinks[url] = true
end
return false
end
if url .. "/" == parenturl then
return false
end
if string.match(url, "^https?://gateway%.reddit%.com/desktopapi/v1/morecomments/")
or string.match(url, "^https?://old%.reddit%.com/api/morechildren$") then
return true
end
if (string.match(url, "^https?://[^/]*redditmedia%.com/")
or string.match(url, "^https?://v%.redd%.it/")
or string.match(url, "^https?://i%.redd%.it/")
or string.match(url, "^https?://[^%.]*preview%.redd%.it/.")
)
and not string.match(item_type, "comment") then
return true
end
for s in string.gmatch(url, "([a-z0-9]+)") do
if posts[s] then
return true
end
end
return false
end
wget.callbacks.download_child_p = function(urlpos, parent, depth, start_url_parsed, iri, verdict, reason)
local url = urlpos["url"]["url"]
local html = urlpos["link_expect_html"]
if item_type == "comment" then
return false
end
if string.match(url, "[<>\\%*%$;%^%[%],%(%){}]")
or string.match(url, "^https?://[^/]*redditstatic%.com/")
or string.match(url, "^https?://old%.reddit%.com/static/")
or string.match(url, "^https?://www%.reddit%.com/static/")
or string.match(url, "^https?://styles%.redditmedia%.com/")
or string.match(url, "^https?://emoji%.redditmedia%.com/")
or string.match(url, "/%.rss$") then
return false
end
if string.match(parent["url"], "^https?://old%.reddit%.com/comments/[a-z0-9]+") then
return true
end
url = string.gsub(url, "&amp;", "&")
if not processed(url)
and (allowed(url, parent["url"]) or (allowed(parent["url"]) and html == 0)) then
addedtolist[url] = true
return true
end
return false
end
wget.callbacks.get_urls = function(file, url, is_css, iri)
local urls = {}
local html = nil
downloaded[url] = true
local function check(urla)
local origurl = url
local url = string.match(urla, "^([^#]+)")
local url_ = string.gsub(string.match(url, "^(.-)%.?$"), "&amp;", "&")
if not processed(url_)
and string.match(url_, "^https?://.+")
and allowed(url_, origurl)
and not (string.match(url_, "[^/]$") and processed(url_ .. "/")) then
table.insert(urls, { url=url_ })
addedtolist[url_] = true
addedtolist[url] = true
end
end
local function checknewurl(newurl)
if string.match(newurl, "^https?:////") then
check(string.gsub(newurl, ":////", "://"))
elseif string.match(newurl, "^https?://") then
check(newurl)
elseif string.match(newurl, "^https?:\\/\\?/") then
check(string.gsub(newurl, "\\", ""))
elseif string.match(newurl, "^\\/\\/") then
checknewurl(string.gsub(newurl, "\\", ""))
elseif string.match(newurl, "^//") then
check(urlparse.absolute(url, newurl))
elseif string.match(newurl, "^\\/") then
checknewurl(string.gsub(newurl, "\\", ""))
elseif string.match(newurl, "^/") then
check(urlparse.absolute(url, newurl))
elseif string.match(newurl, "^%.%./") then
if string.match(url, "^https?://[^/]+/[^/]+/") then
check(urlparse.absolute(url, newurl))
else
checknewurl(string.match(newurl, "^%.%.(/.+)$"))
end
elseif string.match(newurl, "^%./") then
check(urlparse.absolute(url, newurl))
end
end
local function checknewshorturl(newurl)
if string.match(newurl, "^%?") then
check(urlparse.absolute(url, newurl))
elseif not (
string.match(newurl, "^https?:\\?/\\?//?/?")
or string.match(newurl, "^[/\\]")
or string.match(newurl, "^%./")
or string.match(newurl, "^[jJ]ava[sS]cript:")
or string.match(newurl, "^[mM]ail[tT]o:")
or string.match(newurl, "^vine:")
or string.match(newurl, "^android%-app:")
or string.match(newurl, "^ios%-app:")
or string.match(newurl, "^data:")
or string.match(newurl, "^irc:")
or string.match(newurl, "^%${")
) then
check(urlparse.absolute(url, newurl))
end
end
if string.match(url, "^https?://www%.reddit%.com/")
and not string.match(url, "/api/") then
check(string.gsub(url, "^https?://www%.reddit%.com/", "https://old.reddit.com/"))
end
local match = string.match(url, "^https?://preview%.redd%.it/([a-zA-Z0-9]+%.[a-zA-Z0-9]+)")
if match then
check("https://i.redd.it/" .. match)
end
if allowed(url)
and status_code < 300
and not string.match(url, "^https?://[^/]*redditmedia%.com/")
and not string.match(url, "^https?://[^/]*redditstatic%.com/")
and not string.match(url, "^https?://out%.reddit%.com/")
and not string.match(url, "^https?://[^%.]*preview%.redd%.it/")
and not string.match(url, "^https?://i%.redd%.it/")
and not (
string.match(url, "^https?://v%.redd%.it/")
and not string.match(url, "%.m3u8")
and not string.match(url, "%.mpd")
) then
html = read_file(file)
if string.match(url, "^https?://old%.reddit%.com/api/morechildren$") then
html = string.gsub(html, '\\"', '"')
elseif string.match(url, "^https?://old%.reddit%.com/r/[^/]+/comments/")
or string.match(url, "^https?://old%.reddit%.com/r/[^/]+/duplicates/") then
html = string.gsub(html, "<div%s+class='spacer'>%s*<div%s+class=\"titlebox\">.-</div>%s*</div>%s*<div%s+class='spacer'>%s*<div%s+id=\"ad_[0-9]+\"%s*class=\"ad%-container%s*\">", "")
end
if string.match(url, "^https?://old%.reddit%.com/") then
for s in string.gmatch(html, "(return%s+morechildren%(this,%s*'[^']+',%s*'[^']+',%s*'[^']+',%s*'[^']+'%))") do
local link_id, sort, children, limit_children = string.match(s, "%(this,%s*'([^']+)',%s*'([^']+)',%s*'([^']+)',%s*'([^']+)'%)$")
local id = string.match(children, "^([^,]+)")
local subreddit = string.match(html, 'data%-subreddit="([^"]+)"')
local post_data =
"link_id=" .. link_id ..
"&sort=" .. sort ..
"&children=" .. string.gsub(children, ",", "%%2C") ..
"&id=t1_" .. id ..
"&limit_children=" .. limit_children ..
"&r=" .. subreddit ..
"&renderstyle=html"
if not requested_children[post_data] then
requested_children[post_data] = true
table.insert(urls, {url="https://old.reddit.com/api/morechildren",
post_data=post_data})
end
end
elseif string.match(url, "^https?://www%.reddit%.com/r/[^/]+/comments/[^/]")
or string.match(url, "^https?://www%.reddit%.com/user/[^/]+/comments/[^/]")
or string.match(url, "^https?://www%.reddit%.com/comments/[^/]")
or string.match(url, "^https?://gateway%.reddit%.com/desktopapi/v1/morecomments/t3_[^%?]") then
local comments_data = nil
if string.match(url, "^https?://www%.reddit%.com/") then
comments_data = string.match(html, '<script%s+id="data">%s*window%.___r%s*=%s*({.+});%s*</script>%s*<script>')
if comments_data == nil then
print("Could not find comments data.")
abortgrab = true
end
comments_data = load_json_file(comments_data)["moreComments"]["models"]
elseif string.match(url, "^https?://gateway%.reddit%.com/") then
comments_data = load_json_file(html)["moreComments"]
end
if comments_data == nil then
print("Error handling comments data.")
abortgrab = true
end
local comment_id = string.match(url, "^https?://www%.reddit%.com/r/[^/]+/comments/([^/]+)")
if comment_id == nil then
comment_id = string.match(url, "^https?://www%.reddit%.com/user/[^/]+/comments/([^/]+)")
end
if comment_id == nil then
comment_id = string.match(url, "^https?://www%.reddit%.com/comments/([^/]+)")
end
if comment_id == nil then
comment_id = string.match(url, "^https?://gateway%.reddit%.com/desktopapi/v1/morecomments/t3_([^%?]+)")
end
if comment_id == nil then
print("Could not find comment ID.")
abortgrab = true
end
for _, d in pairs(comments_data) do
if d["token"] == nil then
print("Could not find token.")
abortgrab = true
end
local post_data = '{"token":"' .. d["token"] .. '"}'
if not requested_children[post_data] then
requested_children[post_data] = true
table.insert(urls, {url=
"https://gateway.reddit.com/desktopapi/v1/morecomments/t3_" .. comment_id ..
"?emotes_as_images=true" ..
"&rtj=only" ..
"&allow_over18=1" ..
"&include=",
post_data=post_data
})
end
end
end
if string.match(url, "^https?://gateway%.reddit%.com/desktopapi/v1/morecomments/") then
for s in string.gmatch(html, '"permalink"%s*:%s*"([^"]+)"') do
check("https?://www.reddit.com" .. s)
end
end
if string.match(url, "^https?://v%.redd%.it/[^/]+/[^%.]+%.mpd") then
for s in string.gmatch(html, "<BaseURL>([^<]+)</BaseURL>") do
checknewshorturl(s)
end
end
if string.match(url, "^https?://v%.redd%.it/[^/]+/[^%.]+%.m3u8") then
for s in string.gmatch(html, "(.-)\n") do
if not string.match(s, "^#") then
checknewshorturl(s)
end
end
end
if string.match(url, "^https?://www%.reddit.com/api/info%.json%?id=t") then
json = load_json_file(html)
if not json or not json["data"] or not json["data"]["children"] then
io.stdout:write("Could not load JSON.\n")
io.stdout:flush()
abortgrab = true
end
for _, child in pairs(json["data"]["children"]) do
if not child["data"] or not child["data"]["permalink"] then
io.stdout:write("Permalink is missing.\n")
io.stdout:flush()
abortgrab = true
end
checknewurl(child["data"]["permalink"])
end
end
for newurl in string.gmatch(string.gsub(html, "&quot;", '"'), '([^"]+)') do
checknewurl(newurl)
end
for newurl in string.gmatch(string.gsub(html, "&#039;", "'"), "([^']+)") do
checknewurl(newurl)
end
for newurl in string.gmatch(html, ">%s*([^<%s]+)") do
checknewurl(newurl)
end
for newurl in string.gmatch(html, "[^%-]href='([^']+)'") do
checknewshorturl(newurl)
end
for newurl in string.gmatch(html, '[^%-]href="([^"]+)"') do
checknewshorturl(newurl)
end
for newurl in string.gmatch(html, ":%s*url%(([^%)]+)%)") do
checknewurl(newurl)
end
end
return urls
end
wget.callbacks.httploop_result = function(url, err, http_stat)
status_code = http_stat["statcode"]
url_count = url_count + 1
io.stdout:write(url_count .. "=" .. status_code .. " " .. url["url"] .. " \n")
io.stdout:flush()
local match = string.match(url["url"], "^https?://www%.reddit.com/api/info%.json%?id=t[0-9]_([a-z0-9]+)$")
if match then
posts[match] = true
if not item_types[match] then
io.stdout:write("Type for ID not found.\n")
io.stdout:flush()
abortgrab = true
end
item_type = item_types[match]
end
if status_code == 204 then
return wget.actions.EXIT
end
if status_code >= 300 and status_code <= 399 then
local newloc = urlparse.absolute(url["url"], http_stat["newloc"])
if string.match(newloc, "inactive%.min")
or string.match(newloc, "ReturnUrl")
or string.match(newloc, "adultcontent") then
io.stdout:write("Found invalid redirect.\n")
io.stdout:flush()
abortgrab = true
end
if processed(newloc) or not allowed(newloc, url["url"]) then
tries = 0
return wget.actions.EXIT
end
end
if (status_code >= 200 and status_code <= 399) then
downloaded[url["url"]] = true
downloaded[string.gsub(url["url"], "https?://", "http://")] = true
end
if abortgrab then
io.stdout:write("ABORTING...\n")
return wget.actions.ABORT
end
if status_code >= 500
or (status_code >= 400 and status_code ~= 404)
or status_code == 0 then
io.stdout:write("Server returned " .. http_stat.statcode .. " (" .. err .. "). Sleeping.\n")
io.stdout:flush()
local maxtries = 8
if not allowed(url["url"]) then
maxtries = 0
end
if tries >= maxtries then
io.stdout:write("\nI give up...\n")
io.stdout:flush()
tries = 0
if allowed(url["url"]) then
return wget.actions.ABORT
else
return wget.actions.EXIT
end
end
os.execute("sleep " .. math.floor(math.pow(2, tries)))
tries = tries + 1
return wget.actions.CONTINUE
end
if string.match(url["url"], "^https?://[^/]+%.reddit%.com/api/info%?id=t[0-9]_[a-z0-9]+$") then
return wget.actions.EXIT
end
tries = 0
local sleep_time = 0
if sleep_time > 0.001 then
os.execute("sleep " .. sleep_time)
end
return wget.actions.NOTHING
end
wget.callbacks.finish = function(start_time, end_time, wall_time, numurls, total_downloaded_bytes, total_download_time)
local items = nil
for item, _ in pairs(outlinks) do
print('found item', item)
if items == nil then
items = item
else
items = items .. "\0" .. item
end
end
if items ~= nil then
local tries = 0
while tries < 10 do
local body, code, headers, status = http.request(
"http://blackbird-amqp.meo.ws:23038/urls-t05crln9brluand/",
items
)
if code == 200 or code == 409 then
break
end
os.execute("sleep " .. math.floor(math.pow(2, tries)))
tries = tries + 1
end
if tries == 10 then
abortgrab = true
end
end
end
wget.callbacks.before_exit = function(exit_status, exit_status_string)
if abortgrab then
return wget.exits.IO_FAIL
end
return exit_status
end