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letitbit.sh
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letitbit.sh
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# Plowshare letitbit module
# Copyright (c) 2012-2014 Plowshare team
#
# This file is part of Plowshare.
#
# Plowshare is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Plowshare is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Plowshare. If not, see <http://www.gnu.org/licenses/>.
MODULE_LETITBIT_REGEXP_URL='http://\(\(www\|u[[:digit:]]\+\)\.\)\?letitbit\.net/'
MODULE_LETITBIT_DOWNLOAD_OPTIONS="
AUTH,a,auth,a=EMAIL:PASSWORD,User account"
MODULE_LETITBIT_DOWNLOAD_RESUME=yes
MODULE_LETITBIT_DOWNLOAD_FINAL_LINK_NEEDS_COOKIE=no
MODULE_LETITBIT_DOWNLOAD_SUCCESSIVE_INTERVAL=
MODULE_LETITBIT_UPLOAD_OPTIONS="
AUTH,a,auth,a=EMAIL:PASSWORD,User account (mandatory)
FOLDER,,folder,s=FOLDER,Folder to upload files into"
MODULE_LETITBIT_UPLOAD_REMOTE_SUPPORT=no
MODULE_LETITBIT_LIST_OPTIONS=""
MODULE_LETITBIT_LIST_HAS_SUBFOLDERS=no
MODULE_LETITBIT_DELETE_OPTIONS=""
MODULE_LETITBIT_PROBE_OPTIONS=""
# Static function. Proceed with login (trying to reuse cached session)
# $1: authentication
# $2: cookie file
# $3: base url
# stdout: account type ("" or "free" or "premium") on success
letitbit_login() {
local -r AUTH=$1
local -r COOKIE_FILE=$2
local -r BASE_URL=$3
local COOKIES LOGIN_DATA PAGE ERR MSG TYPE EMAIL
# Try to revive old session...
if COOKIES=$(storage_get 'cookies'); then
echo "$COOKIES" > "$COOKIE_FILE"
# ... and check login status/determine account type
PAGE=$(curl -b "$COOKIE_FILE" -H 'X-Requested-With: XMLHttpRequest' \
-d 'act=get_attached_passwords' \
"$BASE_URL/ajax/get_attached_passwords.php") || return
fi
if [ -z "$PAGE" -o "$PAGE" = 'Authorization data is invalid!' ]; then
log_debug 'Cached cookies invalid, deleting storage entry'
storage_set 'cookies'
[ -n "$AUTH" ] || return 0
LOGIN_DATA='act=login&login=$USER&password=$PASSWORD'
PAGE=$(post_login "$AUTH" "$COOKIE_FILE" "$LOGIN_DATA" \
"$BASE_URL/index.php" -b 'lang=en') || return
# Note: Cookies 'pas' + 'log' get set on successful login
ERR=$(parse_tag_quiet 'error-text' 'span' <<< "$PAGE")
if [ -n "$ERR" ]; then
log_error "Remote error: $ERR"
return $ERR_LOGIN_FAILED
fi
PAGE=$(curl -b "$COOKIE_FILE" -H 'X-Requested-With: XMLHttpRequest' \
-d 'act=get_attached_passwords' \
"$BASE_URL/ajax/get_attached_passwords.php") || return
storage_set 'cookies' "$(cat "$COOKIE_FILE")"
MSG='logged in as'
else
MSG='reused login for'
fi
# There are no attached premium accounts found
if match 'no attached premium accounts' "$PAGE"; then
TYPE='free'
# Note: Contains a table of associated premium codes
elif match '^[[:space:]]*<th>Premium account</th>' "$PAGE"; then
TYPE='premium'
else
log_error 'Could not determine account type. Site updated?'
return $ERR_FATAL
fi
EMAIL=$(parse_cookie 'log' < "$COOKIE_FILE" | uri_decode) || return
log_debug "Successfully $MSG member '$EMAIL'"
echo "$TYPE"
}
# Login for WM Panel (trying to reuse cached session)
# $1: authentication
# $2: cookie file
# $3: base url
letitbit_panel_login() {
local -r AUTH=$1
local -r COOKIE_FILE=$2
local -r BASE_URL=$3
local COOKIES PAGE REDIR ERR MSG EMAIL
# Try to revive old session...
if COOKIES=$(storage_get 'panel_cookies'); then
echo "$COOKIES" > "$COOKIE_FILE"
fi
# ... and check login status (or just init site cookies)
PAGE=$(curl -b "$COOKIE_FILE" -c "$COOKIE_FILE" "$BASE_URL/file-manager-new") || return
# Note: Presence of login form indicates "not logged in"
if [ -z "$PAGE" ] || match '/wm-panel/user/signin-do' "$PAGE"; then
log_debug 'Cached cookies invalid, deleting storage entry'
storage_set 'panel_cookies'
[ -n "$AUTH" ] || return $ERR_LINK_NEED_PERMISSIONS
LOGIN_DATA='log=$USER&pas=$PASSWORD&inout='
PAGE=$(post_login "$AUTH" "$COOKIE_FILE" "$LOGIN_DATA" \
"$BASE_URL/user/signin-do" --include -b "$COOKIE_FILE") || return
REDIR=$(grep_http_header_location <<< "$PAGE") || return
if [ "$REDIR" != '/' ]; then
ERR=${REDIR##*\?}
log_error "Remote error: ${ERR%%=*}"
return $ERR_LOGIN_FAILED
fi
PAGE=$(curl -b "$COOKIE_FILE" "$BASE_URL/file-manager-new") || return
storage_set 'panel_cookies' "$(cat "$COOKIE_FILE")"
MSG='logged in as'
else
MSG='reused login for'
fi
EMAIL=$(parse_tag '/wm-panel/cabinet/account' 'a' <<< "$PAGE") || return
log_debug "Successfully $MSG member '$EMAIL'"
}
# Check if specified folder name is valid.
# When multiple folders have the same name, first one is taken.
# $1: folder name selected by user
# $2: cookie file (logged into account)
# $3: base URL
# stdout: folder ID
letitbit_check_folder() {
local -r NAME=$1
local -r COOKIE_FILE=$2
local -r BASE_URL=$3
local JSON FOLDERS FOLDER_ID
# Use dummy "-d" to force a POST request
JSON=$(curl -b "$COOKIE_FILE" -H 'X-Requested-With: XMLHttpRequest' -d '' \
"$BASE_URL/file-manager-new/folders/host/letitbit.net") || return
# Find matching folder ID
FOLDER_ID=$(parse_quiet . \
'"id":"\([[:alnum:]]\+\)",[^,]*,"name":"'$NAME'"' <<< "$JSON")
if [ -n "$FOLDER_ID" ]; then
log_debug "Folder ID: $FOLDER_ID"
echo "$FOLDER_ID"
return 0
fi
FOLDERS=$(parse_json 'name' 'split' <<< "$JSON") || return
log_error 'Invalid folder, choose from:' $FOLDERS
return $ERR_BAD_COMMAND_LINE
}
# Decode the PNG image that contains the obfuscation password
# $1: image file
# stdout: decoded password
letitbit_decode_png() {
local -r IMAGE_FILE=$1
local PASS
# ASCII values of the password chars are stored as the red channel values
# of all pixels in the PNG
if check_exec 'pngtopnm'; then
log_debug 'Using pngtopnm...'
PASS=$(pngtopnm "$IMAGE_FILE" | last_line)
elif check_exec 'convert'; then
local ASCII CHAR VAL
log_debug 'Using convert...'
ASCII=$(convert "$IMAGE_FILE" txt:- | \
parse_all '^[[:digit:]]' 'rgb(\([[:digit:]]\{1,3\}\),') || return
# convert ASCII values to regular string
# Source: http://mywiki.wooledge.org/BashFAQ/071
for VAL in $ASCII; do
CHAR=$(printf \\$(($VAL/64*100 + $VAL%64/8*10 + $VAL%8)))
PASS="$PASS$CHAR"
done
else
log_error 'No suitable program found to decode PNG image. Aborting...'
log_error 'Please install "convert" (ImageMagick) or "pngtopnm" (Netpbm).'
return $ERR_SYSTEM
fi
echo "$PASS"
}
# Decode an obfuscated HTML form
# $1: original form content (including obfuscation script)
# $2: cookie file
# $3: base url
# stdout: decoded input fields of the form
letitbit_decode_form() {
local -r CRYPT_FORM=$1
local -r COOKIE_FILE=$2
local -r BASE_URL=$3
local -r VARIABLE_PREFIX='jac' # look in site source 'eval(jac383("d2lu...'
local INPUTS IDS VALUES CC LINE RET
local SCRIPT DEF_SCRIPT PROTO_SCRIPT DEC_SCRIPT DEC_SCRIPT2
local PREPARE CODE IMAGE_FILE PASS
local -a ID_ARR VAL_ARR
detect_javascript || return
# extract all encrypted form fields (id + value)
INPUTS=$(break_html_lines_alt <<< "$CRYPT_FORM" | \
parse_all '<input.*[iI][dD]' '^\(.*\)$') || return
IDS=$(parse_all_attr 'input.*[iI][dD]=' '[iI][dD]' <<< "$INPUTS") || return
VALUES=$(parse_all_attr 'input.*[iI][dD]=' '[vV][aA][lL][uU][eE]' <<< "$INPUTS") || return
# create arrays so we can match id-value pairs
# Note: taken from 'list_submit' of Plowshare3
CC=0
while IFS= read -r LINE; do ID_ARR[CC++]=$LINE; done <<< "$IDS"
CC=0
while IFS= read -r LINE; do VAL_ARR[CC++]=$LINE; done <<< "$VALUES"
if [ ${#ID_ARR[@]} -ne ${#VAL_ARR[@]} ]; then
log_error 'Error parsing input fields.'
return $ERR_FATAL
fi
# build a JS hashmap for later use: input['id'] = 'value'
INPUTS="var input = new Object();"
for CC in "${!ID_ARR[@]}"; do
INPUTS="$INPUTS input['${ID_ARR[$CC]}'] = '${VAL_ARR[$CC]}';"
done
# extract the form decryption script
SCRIPT=$(tr -d '\n\r' <<< "$CRYPT_FORM" | parse_tag script) || return
# split up script into general definition part and decrypting part
DEF_SCRIPT=${SCRIPT%%;;eval(${VARIABLE_PREFIX}*}
DEC_SCRIPT=${SCRIPT:$(( ${#DEF_SCRIPT} + 2))}
# optimize to improve compatibility + save time and computing power
# first part of DEF_SCRIPT is (hopefully) static and decodes to PROTO_SCRIPT
DEF_SCRIPT="var ${VARIABLE_PREFIX}${DEF_SCRIPT#*;;var ${VARIABLE_PREFIX}}"
PROTO_SCRIPT='String.prototype.sort=function(){return this.split("").sort().join("")};
String.prototype.ord=function(){return this.charCodeAt(0)};
var EOL=function(){return (1).chr()};
String.prototype.str_split=function(a){var b=[],pos=0,len=this.length;while(pos<len){b.push(this.slice(pos,pos+=a))}return b};
Number.prototype.chr=function(){return String.fromCharCode(this)};'
# only part 2 (of 2) from decrypt script is really needed
DEC_SCRIPT=${DEC_SCRIPT#*;}
DEC_SCRIPT=${DEC_SCRIPT/eval/print}
# deobfuscate the second part/decryption script
DEC_SCRIPT2=$(javascript <<< "var window = new Object(); window.__jsp_list = new Array(); $PROTO_SCRIPT ; $DEF_SCRIPT ; $DEC_SCRIPT ;" | tr -d '\n\r' | parse . '\(var .\+);\)}') || return
CODE=$(parse . ", '\([[:alnum:]]\+\)', 'jsprotect" <<< "$DEC_SCRIPT2") || return
log_debug "Code: '$CODE'"
# get image file that encodes the password
IMAGE_FILE=$(create_tempfile '.png') || return
RET=''
curl -b "$COOKIE_FILE" -b 'lang=en' -o "$IMAGE_FILE" --get -d "n=$CODE" \
-d "r=$(random js)" "$BASE_URL/jspimggen.php" || RET=$?
if [ -n "$RET" ]; then
rm -f "$IMAGE_FILE"
return $RET
fi
# extract the password from the image
PASS=$(letitbit_decode_png "$IMAGE_FILE") || RET=$?
log_debug "Pass: '$PASS'"
rm -f "$IMAGE_FILE"
[ -n "$RET" ] && return $RET
# acknowledge password at server
curl -b "$COOKIE_FILE" -b 'lang=en' --get -d 'stat=1' -d 'text=' \
-d "r=$(random js)" "$BASE_URL/jspimggen.php" || return
# obfuscated strings are hidden within the 'value' attributes of the 'input'
# tags and unscrambled by (hopefully!) static JS code - a simplified version
# of which is used here
PREPARE="var pass = '$PASS';
function explainJSPForm(dummy1, dummy2, dummy3, list, pass, decoder) {
var get_value = function (id) {
try { return input[id]; }
catch (e) { return null; }
};
var get_values = function (ids) {
var r = [];
for (var i = 0; i < ids.length; ++i) {
r.push(get_value(ids[i]));
}
return r.join('');
};
list = list.split(';');
for (var i = 0; i < list.length; ++i) {
var item = list[i].split('=');
if (item.length == 1) { item[1] = ''; }
var k = get_values(item[0].split(','));
var v = get_values(item[1].split(','));
k = decoder(k, pass);
v = decoder(v, pass);
print('<input name=\"' + k + '\" value=\"' + v + '\" />');
}
}"
# finally, decrypt the form and return the plain version
javascript <<< "$PROTO_SCRIPT ; $DEF_SCRIPT ; $INPUTS ; $PREPARE ; $DEC_SCRIPT2 ;"
}
# Output a file URL to download from Letitbit.net
# $1: cookie file
# $2: letitbit url
# stdout: real file download link
# file name
letitbit_download() {
local -r COOKIE_FILE=$1
local -r BASE_URL='http://letitbit.net'
local PAGE URL ACCOUNT SERVER WAIT CONTROL FILE_NAME
local FORM FORM_REDIR FORM_UID5 FORM_UID FORM_ID FORM_LIVE FORM_SEO
local FORM_NAME FORM_PIN FORM_REAL_UID FORM_REAL_NAME FORM_HOST FORM_SERVER
local FORM_SIZE FORM_FILE_ID FORM_INDEX FORM_DIR FORM_ODIR FORM_DESC
local FORM_LSA FORM_PAGE FORM_SKYMONK FORM_MD5 FORM_REAL_UID_FREE
local FORM_SHASH FORM_SPIN FORM_CHECK
# server redirects "simple links" to real download server
#
# simple: http://letitbit.net/download/...
# http://www.letitbit.net/download/...
# real: http://u29043481.letitbit.net/download/...
URL=$(curl --head "$2" | grep_http_header_location_quiet)
[ -n "$URL" ] || URL=$2
LINK_BASE_URL=${URL%%/download/*}
ACCOUNT=$(letitbit_login "$AUTH" "$COOKIE_FILE" "$BASE_URL") || return
# Note: Premium users are redirected to a download page
PAGE=$(curl --location -b "$COOKIE_FILE" -c "$COOKIE_FILE" -b 'lang=en' "$URL") || return
if match 'File not found\|страница не существует' "$PAGE"; then
return $ERR_LINK_DEAD
fi
if [ "$ACCOUNT" = 'premium' ]; then
local FILE_LINKS
FILE_NAME=$(parse_tag_quiet 'File:' 'a' <<< "$PAGE") || return
FILE_LINKS=$(parse_all_attr_quiet 'Link to the file download' 'href' <<< "$PAGE") || return
if [ -z "$FILE_NAME" -o -z "$FILE_LINKS" ]; then
log_error 'Could not retrieve premium link. Do you have enough points?'
return $ERR_FATAL
fi
# Note: The page performs some kind of verification on all links,
# but we try to do without this for now and just use the 1st link.
first_line <<< "$FILE_LINKS"
echo "$FILE_NAME"
return 0
fi
# anon/free account download
FORM=$(grep_form_by_id "$PAGE" 'ifree_form') || return
FORM=$(letitbit_decode_form "$FORM" "$COOKIE_FILE" "$LINK_BASE_URL") || return
#~ log_debug "Plain form: $FORM"
FORM_REDIR=$(parse_form_input_by_name 'redirect_to_pin' <<< "$FORM") || return
FORM_UID5=$(parse_form_input_by_name 'uid5' <<< "$FORM") || return
FORM_UID=$(parse_form_input_by_name 'uid' <<< "$FORM") || return
FORM_ID=$(parse_form_input_by_name 'id' <<< "$FORM") || return
FORM_LIVE=$(parse_form_input_by_name 'live' <<< "$FORM") || return
FORM_SEO=$(parse_form_input_by_name 'seo_name' <<< "$FORM") || return
FORM_NAME=$(parse_form_input_by_name 'name' <<< "$FORM") || return
FORM_PIN=$(parse_form_input_by_name 'pin' <<< "$FORM") || return
FORM_REAL_UID=$(parse_form_input_by_name 'realuid' <<< "$FORM") || return
FORM_REAL_NAME=$(parse_form_input_by_name 'realname' <<< "$FORM") || return
FORM_HOST=$(parse_form_input_by_name 'host' <<< "$FORM") || return
FORM_SERVER=$(parse_form_input_by_name_quiet 'ssserver' <<< "$FORM")
FORM_SIZE=$(parse_form_input_by_name 'sssize' <<< "$FORM") || return
FORM_FILE_ID=$(parse_form_input_by_name 'file_id' <<< "$FORM") || return
FORM_INDEX=$(parse_form_input_by_name 'index' <<< "$FORM") || return
FORM_DIR=$(parse_form_input_by_name_quiet 'dir' <<< "$FORM")
FORM_ODIR=$(parse_form_input_by_name_quiet 'optiondir' <<< "$FORM")
FORM_DESC=$(parse_form_input_by_name 'desc' <<< "$FORM") || return
FORM_LSA=$(parse_form_input_by_name 'lsarrserverra' <<< "$FORM") || return
FORM_PAGE=$(parse_form_input_by_name_quiet 'page' <<< "$FORM")
FORM_SKYMONK=$(parse_form_input_by_name 'is_skymonk' <<< "$FORM") || return
FORM_MD5=$(parse_form_input_by_name 'md5crypt' <<< "$FORM") || return
FORM_REAL_UID_FREE=$(parse_form_input_by_name 'realuid_free' <<< "$FORM") || return
FORM_SPIN=$(parse_form_input_by_name 'slider_pin' <<< "$FORM") || return
FORM_SHASH=$(parse_form_input_by_name 'slider_hash' <<< "$FORM") || return
FORM_CHECK=$(parse_form_input_by_name '__jspcheck' <<< "$FORM") || return
# 1) get advertising page
# Note: Only needed to update cookies.
PAGE=$(curl -b "$COOKIE_FILE" -b 'lang=en' -c "$COOKIE_FILE" \
--referer "$URL" -d 'tpl_d4=d4_plain' -d 'tpl_d3=d3_skymonk' \
-d "redirect_to_pin=$FORM_REDIR" -d "uid5=$FORM_UID5" \
-d "uid=$FORM_UID" -d "id=$FORM_ID" -d "live=$FORM_LIVE" \
-d "seo_name=$FORM_SEO" -d "name=$FORM_NAME" -d "pin=$FORM_PIN" \
-d "realuid=$FORM_REAL_UID" -d "realname=$FORM_REAL_NAME" \
-d "host=$FORM_HOST" -d "ssserver=$FORM_SERVER" \
-d "sssize=$FORM_SIZE" -d "file_id=$FORM_FILE_ID" \
-d "index=$FORM_INDEX" -d "dir=$FORM_DIR" -d "optiondir=$FORM_ODIR" \
-d "desc=$FORM_DESC" -d "lsarrserverra=$FORM_LSA" \
-d "page=$FORM_PAGE" -d "is_skymonk=$FORM_SKYMONK" \
-d "md5crypt=$FORM_MD5" -d "realuid_free=$FORM_REAL_UID_FREE" \
-d "slider_pin=$FORM_SPIN" -d "slider_hash=$FORM_SHASH" \
-d "__jspcheck=$FORM_CHECK" "$LINK_BASE_URL/born_iframe.php") || return
# 2) get download request page
PAGE=$(curl -b "$COOKIE_FILE" -b 'lang=en' -c "$COOKIE_FILE" \
--referer "$LINK_BASE_URL/born_iframe.php" \
-d 'tpl_d4=d4_plain' -d 'tpl_d3=d3_skymonk' \
-d "redirect_to_pin=$FORM_REDIR" -d "uid5=$FORM_UID5" \
-d "uid=$FORM_UID" -d "id=$FORM_ID" -d "live=$FORM_LIVE" \
-d "seo_name=$FORM_SEO" -d "name=$FORM_NAME" -d "pin=$FORM_PIN" \
-d "realuid=$FORM_REAL_UID" -d "realname=$FORM_REAL_NAME" \
-d "host=$FORM_HOST" -d "ssserver=$FORM_SERVER" \
-d "sssize=$FORM_SIZE" -d "file_id=$FORM_FILE_ID" \
-d "index=$FORM_INDEX" -d "dir=$FORM_DIR" -d "optiondir=$FORM_ODIR" \
-d "desc=$FORM_DESC" -d "lsarrserverra=$FORM_LSA" \
-d "page=$FORM_PAGE" -d "is_skymonk=$FORM_SKYMONK" \
-d "md5crypt=$FORM_MD5" -d "realuid_free=$FORM_REAL_UID_FREE" \
-d "slider_pin=$FORM_SPIN" -d "slider_hash=$FORM_SHASH" \
-d "__jspcheck=$FORM_CHECK" "$LINK_BASE_URL/download3.php") || return
# 3) parse wait time and wait
WAIT=$(parse_tag 'Wait for Your turn' 'span' <<< "$PAGE") || return
wait $((WAIT + 1)) || return
# 4) check download (Note: dummy '-d" to force a POST request)
PAGE=$(curl -b "$COOKIE_FILE" -b 'lang=en' -d '' \
-H 'X-Requested-With: XMLHttpRequest' \
--referer "$LINK_BASE_URL/download3.php" \
"$LINK_BASE_URL/ajax/download3.php") || return
if [ "$PAGE" != '1' ]; then
# daily limit reached!?
log_error "Unexpected response: $PAGE"
return $ERR_FATAL
fi
# 5) confirm free download
PAGE=$(curl -b "$COOKIE_FILE" -b 'lang=en' -c "$COOKIE_FILE" \
-d 'tpl_d3=d3_skymonk' \
-d "redirect_to_pin=$FORM_REDIR" -d "uid5=$FORM_UID5" \
-d "uid=$FORM_UID" -d "id=$FORM_ID" -d "live=$FORM_LIVE" \
-d "seo_name=$FORM_SEO" -d "name=$FORM_NAME" -d "pin=$FORM_PIN" \
-d "realuid=$FORM_REAL_UID" -d "realname=$FORM_REAL_NAME" \
-d "host=$FORM_HOST" -d "ssserver=$FORM_SERVER" \
-d "sssize=$FORM_SIZE" -d "file_id=$FORM_FILE_ID" \
-d "index=$FORM_INDEX" -d "dir=$FORM_DIR" -d "optiondir=$FORM_ODIR" \
-d "desc=$FORM_DESC" -d "lsarrserverra=$FORM_LSA" \
-d "page=$FORM_PAGE" -d "is_skymonk=$FORM_SKYMONK" \
-d "md5crypt=$FORM_MD5" -d "realuid_free=$FORM_REAL_UID_FREE" \
-d "slider_pin=$FORM_SPIN" -d "slider_hash=$FORM_SHASH" \
-d "__jspcheck=$FORM_CHECK" "$LINK_BASE_URL/download3.php") || return
# Note: Site adds an additional "control field" to the usual ReCaptcha stuff
CONTROL=$(parse 'var[[:space:]]\+recaptcha_control_field' \
"=[[:space:]]\+'\([^']\+\)';" <<< "$PAGE") || return
# Solve recaptcha
local PUBKEY WCI CHALLENGE WORD CONTROL ID
PUBKEY='6Lc9zdMSAAAAAF-7s2wuQ-036pLRbM0p8dDaQdAM'
WCI=$(recaptcha_process $PUBKEY)
{ read WORD; read CHALLENGE; read ID; } <<< "$WCI"
# Note: "recaptcha_control_field" *must* be encoded properly
PAGE=$(curl -b "$COOKIE_FILE" -b 'lang=en' \
--referer "$LINK_BASE_URL/download3.php" \
-H 'X-Requested-With: XMLHttpRequest' \
-d "recaptcha_challenge_field=$CHALLENGE" \
-d "recaptcha_response_field=$WORD" \
--data-urlencode "recaptcha_control_field=$CONTROL" \
"$LINK_BASE_URL/ajax/check_recaptcha.php") || return
# Server response should contain multiple URLs if successful
if ! match 'http' "$PAGE"; then
if [ "$PAGE" = 'error_wrong_captcha' ]; then
log_error 'Wrong captcha'
captcha_nack "$ID"
return $ERR_CAPTCHA
elif [ "$PAGE" = 'error_free_download_blocked' ]; then
# We'll take it literally and wait till the next day
local HOUR MIN TIME
# Get current UTC time, prevent leading zeros
TIME=$(date -u +'%k:%M') || return
HOUR=${TIME%:*}
MIN=${TIME#*:}
log_error 'Daily limit (1 download per day) reached.'
echo $(( ((23 - HOUR) * 60 + (61 - ${MIN#0}) ) * 60 ))
return $ERR_LINK_TEMP_UNAVAILABLE
fi
log_error "Unexpected remote error: $PAGE"
return $ERR_FATAL
fi
log_debug 'Correct captcha'
captcha_ack "$ID"
# Response contains multiple possible download links, we just pick the first
parse . '"\(http:[^"]\+\)"' <<< "$PAGE" || return
echo "$FORM_NAME"
}
# Upload a file to Letitbit.net
# $1: cookie file
# $2: input file (with full path)
# $3: remote filename
# stdout: letitbit download link
# letitbit delete link
letitbit_upload() {
local -r COOKIE_FILE=$1
local -r FILE=$2
local -r DEST_FILE=$3
local -r BASE_URL='http://newlib.wm-panel.com/wm-panel'
local PAGE SIZE MAX_SIZE UPLOAD_SERVER MARKER STATUS_URL OPT_FOLDER
local FORM FORM_OWNER FORM_PIN FORM_BASE FORM_HOST FORM_SOURCE
# Log into panel
letitbit_panel_login "$AUTH" "$COOKIE_FILE" "$BASE_URL" || return
# If user chose a folder, check it now
if [ -n "$FOLDER" ]; then
local FOLDER_ID
FOLDER_ID=$(letitbit_check_folder "$FOLDER" "$COOKIE_FILE" "$BASE_URL") || return
OPT_FOLDER="-F folder=$FOLDER_ID"
fi
PAGE=$(curl -b "$COOKIE_FILE" -b 'lang=en' "$BASE_URL/file-manager-new") || return
FORM=$(grep_form_by_id "$PAGE" 'upload_form') || return
MAX_SIZE=$(parse_form_input_by_name 'MAX_FILE_SIZE' <<< "$FORM") || return
SIZE=$(get_filesize "$FILE")
if [ $SIZE -gt "$MAX_SIZE" ]; then
log_debug "File is bigger than $MAX_SIZE"
return $ERR_SIZE_LIMIT_EXCEEDED
fi
FORM_OWNER=$(parse_form_input_by_name 'owner' <<< "$FORM") || return
FORM_PIN=$(parse_form_input_by_name 'pin' <<< "$FORM") || return
FORM_BASE=$(parse_form_input_by_name 'base' <<< "$FORM") || return
FORM_HOST=$(parse_form_input_by_name 'host' <<< "$FORM") || return
FORM_SOURCE=$(parse_form_input_by_name 'source' <<< "$FORM") || return
UPLOAD_SERVER=$(parse '^[[:space:]]*t.server' \
"=[[:space:]]\+'\([^']\+\)';" <<< "$PAGE") || return
# marker/nonce is generated like this
#
# function randomString( _length ) {
# var chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz';
# ... choose <_length_> random elements from array above ...
# }
# ...
# <marker> = (new Date()).getTime().toString(16).toUpperCase() + '_' + randomString( 40 );
#
# example: 13B18CC2A5D_cwhOyTuzkz7GOsdU9UzCwtB0J9GSGXJCsInpctVV
MARKER=$(printf '%X_%s' "$(date +%s000)" "$(random Ll 40)") || return
# Upload local file
PAGE=$(curl_with_log -b "$COOKIE_FILE" -b 'lang=en' \
-F "owner=$FORM_OWNER" -F "pin=$FORM_PIN" -F "base=$FORM_BASE" \
-F "host=$FORM_HOST" -F "source=$FORM_SOURCE" $OPT_FOLDER \
-F "file0=@$FILE;type=application/octet-stream;filename=$DEST_FILE" \
"http://$UPLOAD_SERVER/marker=$MARKER") || return
if [ "$(parse_json_quiet 'code' <<< "$PAGE")" -ne 200 ]; then
log_error "Unexpected response: $PAGE"
return $ERR_FATAL
fi
# Get upload stats/result URL
PAGE=$(curl -b "$COOKIE_FILE" -b 'lang=en' \
"http://$UPLOAD_SERVER/marker=$MARKER") || return
STATUS_URL=$(parse_json_quiet 'post_result' <<< "$PAGE")
if [ -z "STATUS_URL" ]; then
log_error "Unexpected response: $PAGE"
return $ERR_FATAL
fi
PAGE=$(curl -b "$COOKIE_FILE" -b 'lang=en' "$STATUS_URL") || return
# extract + output download link + delete link
parse 'Links to download files' '>\(http.\+html\)$' 2 <<< "$PAGE" || return
parse 'Links to delete files' '>\(http.\+html\)<' 1 <<< "$PAGE" || return
}
# Delete a file on Letitbit.net
# $1: cookie file
# $2: letitbit.net (delete) link
letitbit_delete() {
local -r COOKIE_FILE=$1
local -r URL=$2
local -r BASE_URL='http://letitbit.net'
local DEL_PART PAGE
# http://letitbit.net/download/delete15623193_0be902ba49/70662.717a170fc1bf0620a7f62fde1975/worl.html
if ! match 'download/delete' "$URL"; then
log_error 'This is not a delete link.'
return $ERR_FATAL
fi
# Check (manually) if file exists
# remove "delete15623193_0be902ba49/" to get normal download link
DEL_PART=$(parse . '\(delete[^/]\+\)' <<< "$URL") || return
PAGE=$(curl -L -b 'lang=en' "${URL/$DEL_PART\//}") || return
if match 'File not found' "$PAGE"; then
return $ERR_LINK_DEAD
fi
curl -L -b 'lang=en' -c "$COOKIE_FILE" -o /dev/null "$URL" || return
# Solve recaptcha
local PUBKEY WCI CHALLENGE WORD CONTROL ID
PUBKEY='6Lc9zdMSAAAAAF-7s2wuQ-036pLRbM0p8dDaQdAM'
WCI=$(recaptcha_process $PUBKEY)
{ read WORD; read CHALLENGE; read ID; } <<< "$WCI"
PAGE=$(curl --referer "$URL" -b "$COOKIE_FILE" \
-H 'X-Requested-With: XMLHttpRequest' \
-d "recaptcha_challenge_field=$CHALLENGE" \
-d "recaptcha_response_field=$WORD" \
"$BASE_URL/ajax/check_recaptcha2.php") || return
case "$PAGE" in
ok)
captcha_ack "$ID"
return 0
;;
error_wrong_captcha)
log_error 'Wrong captcha'
captcha_nack "$ID"
return $ERR_CAPTCHA
;;
*)
log_error "Unexpected response: $PAGE"
return $ERR_FATAL
;;
esac
}
# List an Letitbit.net shared file folder URL
# $1: letitbit.net folder url
# $2: recurse subfolders (null string means not selected)
# stdout: list of links
letitbit_list() {
local URL=$1
local PAGE LINKS NAMES
# check whether it looks like a folder link
if ! match "${MODULE_LETITBIT_REGEXP_URL}folder/" "$URL"; then
log_error 'This is not a directory list.'
return $ERR_FATAL
fi
test "$2" && log_debug "Letitbit does not display sub folders"
PAGE=$(curl -L "$URL") || return
LINKS=$(parse_all_attr 'target="_blank"' 'href' <<< "$PAGE")
NAMES=$(parse_all_tag 'target="_blank"' 'font' <<< "$PAGE")
test "$LINKS" || return $ERR_LINK_DEAD
list_submit "$LINKS" "$NAMES" || return
}
# Probe a download URL
# $1: cookie file (unused here)
# $2: Letitbit url
# $3: requested capability list
# stdout: 1 capability per line
letitbit_probe() {
local -r REQ_IN=$3
local -r AUTH_CODE='dKvvqMCW8'
local -r BASE_URL='http://api.letitbit.net'
local URL QUERY JSON REQ_OUT
# server redirects "simple links" to real download server
URL=$(curl --head "$2" | grep_http_header_location_quiet)
[ -n "$URL" ] || URL=$2
# Using official API (http://api.letitbit.net/reg/static/api.pdf)
QUERY=$(printf 'r=["%s",["download/info",{"link":"%s"}]]' "$AUTH_CODE" "$URL")
JSON=$(curl -d "$QUERY" "$BASE_URL/json") || return
# Check for API errors
case $(parse_json 'status' <<< "$JSON") in
'OK')
;; # NOP
'FAIL')
log_error "Error: $(parse_json 'data' <<< "$JSON")"
return $ERR_FATAL
;;
*)
log_error "Unexpected status: $JSON"
return $ERR_FATAL
;;
esac
# Check for deleted files (API sends empty reply)
if [[ $JSON = *'"data":[[]]'* ]]; then
return $ERR_LINK_DEAD
fi
REQ_OUT=c
if [[ $REQ_IN = *f* ]]; then
parse_json 'name' <<< "$JSON"
REQ_OUT="${REQ_OUT}f"
fi
if [[ $REQ_IN = *s* ]]; then
parse_json 'size' <<< "$JSON"
REQ_OUT="${REQ_OUT}s"
fi
if [[ $REQ_IN = *h* ]]; then
parse_json 'md5' <<< "$JSON"
REQ_OUT="${REQ_OUT}h"
fi
echo $REQ_OUT
}