Dropbox Uploader Script

README

Author: Andrea Fabrizi
Email:  andrea.fabrizi@gmail.com
Web:    http://www.andreafabrizi.it

Dropbox Uploader is a BASH script which can be used to upload files to Dropbox, 
an online file sharing, synchronization and backup service. 

It's written in BASH scripting language and only needs cURL (CLI).

Usage: ./dropbox_uploader.sh [OPTIONS]...

Options:
	-u [USERNAME] (required if not hardcoded)
	-p [PASSWORD]
	-f [FILE/FOLDER] (required)
	-d [REMOTE_FOLDER] (default: /)
	-v Verbose mode

Examples:
    ./dropbox_uploader.sh -u andrea.fabrizi@gmail.com -f /etc/passwd -v
    ./dropbox_uploader.sh -u andrea.fabrizi@gmail.com -f /var/backup/ -v


CHANGELOG:

Version 0.8.2 - 07/09/2011:
- Removed INTERACTIVE_MODE variable (now the progress bar is shown in VERBOSE mode)
- Improved command line interface and error messages
- Minor bug fixes

Version 0.8.1 - 31/08/2011 (by Dawid Ferenczy - www.ferenczy.cz)
- added prompt for the Dropbox password from keyboard, if there is no password 
  hardcoded or given as script command line parameter (interactive mode)
- added INTERACTIVE_MODE variable - when set to 1 show CURL progress bar.
  Set to 1 automatically when there is no password hardcoded or given as
  parameter. Controls verbosity of CURL.

Version 0.7.1 - 10/03/2011:
- Minor bug fixes

Version 0.7 - 10/03/2011:
- New command line interface
- Code clean

Version 0.6 - 11/01/2011:
- Fixed issue with spaces in file/forder name

Version 0.5 - 04/01/2011:
- Recursive directory upload

Version 0.4 - 29/12/2010:
- Now works on BSD and MAC
- Interactive prompt for username and password
- Speeded up the uploading process
- Debug mode

Version 0.3 - 18/11/2010:
- Regex updated

Version 0.2 - 04/09/2010:
- Removed dependencies from tempfile
- Code clean

Version 0.1 - 23/08/2010:
- Initial release

dropbox_uploader.sh

#!/bin/bash
#
# Dropbox Uploader Script v0.8.2
#
# Copyright (C) 2010-2011 Andrea Fabrizi <andrea.fabrizi@gmail.com>
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#

#DROPBOX ACCOUNT
#For security reasons, it is not recommended to modify this script
#to hardcode a login and password.  However, this can be done if
#automation is necessary.
LOGIN_EMAIL=""
LOGIN_PASSWD=""

#Set to 1 to enable DEBUG mode
DEBUG=0

#Set to 1 to enable VERBOSE mode (-v option)
VERBOSE=0

#If set to 1 the script terminate if an upload error occurs
END_ON_UPLOAD_ERROR=0

#Set to 1 to skip the initial login page loading (Speed up the uploading process).
#Set to 0 if you experience problems uploading the files.
SKIP_LOADING_LOGIN_PAGE=1

#Don't edit these...
LOGIN_URL="https://www.dropbox.com/login"
HOME_URL="https://www.dropbox.com/home"
UPLOAD_URL="https://dl-web.dropbox.com/upload"
COOKIE_FILE="/tmp/du_cookie_$RANDOM"
RESPONSE_FILE="/tmp/du_resp_$RANDOM"
BIN_DEPS="curl sed grep tr pwd"
VERSION="0.8.2"

if [ $DEBUG -ne 0 ]; then
    set -x
    COOKIE_FILE="/tmp/du_cookie_debug"
    RESPONSE_FILE="/tmp/du_resp_debug"
fi

#Print verbose information depend on $VERBOSE variable
function print
{
    if [ $VERBOSE -eq 1 ]; then
	    echo -ne "$1";
    fi
}

#Remove temporary files
function remove_temp_files
{
    if [ $DEBUG -eq 0 ]; then
        rm -fr $COOKIE_FILE
        rm -fr $RESPONSE_FILE
    fi
}

#Extract token from the specified form
# $1 = file path
# $2 = form action
function get_token
{
    TOKEN=$(cat $1 | tr -d '\n' | sed 's/.*<form action="'$2'"[^>]*>\s*<input type="hidden" name="t" value="\([a-z 0-9]*\)".*/\1/')
    echo $TOKEN
}

#Upload a single file to dropbox
# $1 = local file path
# $2 = remote destination folder
function dropbox_upload
{
    UPLOAD_FILE=$1
    DEST_FOLDER=$2
    
    print " > Uploading '$UPLOAD_FILE' to 'DROPBOX$DEST_FOLDER'..."

    #Show the progress bar during the file upload
    if [ $VERBOSE -eq 1 ]; then
    	CURL_PARAMETERS="--progress-bar"
    	print "\n"
    else
    	CURL_PARAMETERS="-s --show-error"
    fi

    curl $CURL_PARAMETERS -i -b $COOKIE_FILE -o $RESPONSE_FILE -F "plain=yes" -F "dest=$DEST_FOLDER" -F "t=$TOKEN" -F "file=@$UPLOAD_FILE"  "$UPLOAD_URL"
    grep "HTTP/1.1 302 FOUND" "$RESPONSE_FILE" > /dev/null

    if [ $? -ne 0 ]; then
        print " Failed!\n"
        if [ $END_ON_UPLOAD_ERROR -eq 1 ]; then
            remove_temp_files
            exit 1
        fi
    else
        print " OK\n"
    fi
}

#Recursively upload a directory structure
# $1 = remote destination folder
function dropbox_upload_dir
{
    for i in *; do

        if [ -f "$i" ]; then
            dropbox_upload "$i" "$1"
        fi

        if [ -d "$i" ]; then
            local OLD_PWD=$(pwd)
            cd "$i"
            dropbox_upload_dir "$1/$i"
            cd "$OLD_PWD"
        fi
    done
}


#Handles the keyboard interrupt (control-c)
function ctrl_c
{
    print "\n Bye ;)\n"
    remove_temp_files
    exit 1
}

#Trap keyboard interrupt (control-c)
trap ctrl_c SIGINT

#CHECK DEPENDENCIES
for i in $BIN_DEPS; do
    which $i > /dev/null
    if [ $? -ne 0 ]; then
        echo -e "Error: Required file could not be found: $i"
        remove_temp_files
        exit 1
    fi
done

#USAGE
function usage() {
    echo -e "Dropbox Uploader v$VERSION"
    echo -e "Usage: $0 [OPTIONS]..."
    echo -e "\nOptions:"
    echo -e "\t-u [USERNAME] (required if not hardcoded)"
    echo -e "\t-p [PASSWORD]"
    echo -e "\t-f [FILE/FOLDER] (required)"
    echo -e "\t-d [REMOTE_FOLDER] (default: /)"
    echo -e "\t-v Verbose mode"

    remove_temp_files
}

# File variables
UPLOAD_FILE=""
DEST_FOLDER=""

optn=0;

while getopts "u:p:f:d:v" opt; do
    case $opt in
        u)
            LOGIN_EMAIL="$OPTARG"
            let optn++;;
        p)
            LOGIN_PASSWD="$OPTARG"
            let optn++;;
        f)
            UPLOAD_FILE="$OPTARG"
            let optn++;;
        d)
            DEST_FOLDER="$OPTARG"
            let optn++;;
        v)
            VERBOSE=1;;
        *)
            usage;
            exit 0;
    esac
done

if [ $optn -lt 1 ] || [ "$LOGIN_EMAIL" == "" ]; then
	usage;
	exit 1;
fi

if [ "$DEST_FOLDER" == "" ]; then
    DEST_FOLDER="/"
fi

print "Dropbox Uploader v$VERSION\n"

#CHECK FILE/DIR
if [ ! -r "$UPLOAD_FILE" ]; then
    echo -e "Please specify a valid file or directory (-f)"
    remove_temp_files
    exit 1
fi

#Prompt for password
if [ "$LOGIN_PASSWD" == "" ]; then
	read -s -p "Password: " LOGIN_PASSWD
	echo
fi

#LOAD LOGIN PAGE
if [ $SKIP_LOADING_LOGIN_PAGE -eq 0 ]; then
    print " > Loading Login Page..."
    curl -s --show-error -i -o "$RESPONSE_FILE" "$LOGIN_URL"

    if [ $? -ne 0 ]; then
        print " Failed!\n"
        remove_temp_files
        exit 1
    else
        print " OK\n"
    fi

    #GET TOKEN
    TOKEN=$(get_token "$RESPONSE_FILE" "\/login")
    #echo -e " > Token = $TOKEN"
    if [ "$TOKEN" == "" ]; then
        print " Failed to get Authentication token!\n"
        remove_temp_files
        exit 1
    fi
fi

#LOGIN
print " > Logging in..."
curl -s --show-error -i -c $COOKIE_FILE -o $RESPONSE_FILE --data "login_email=$LOGIN_EMAIL&login_password=$LOGIN_PASSWD&t=$TOKEN" "$LOGIN_URL"
grep "location: /home" $RESPONSE_FILE > /dev/null

if [ $? -ne 0 ]; then
    print " Failed!\n"
    remove_temp_files
    exit 1
else
    print " OK\n"
fi

#LOAD HOME
print " > Loading Home..."
curl -s --show-error -i -b "$COOKIE_FILE" -o "$RESPONSE_FILE" "$HOME_URL"

if [ $? -ne 0 ]; then
    print " Failed!\n"
    remove_temp_files
    exit 1
else
    print " OK\n"
fi

#GET TOKEN
TOKEN=$(get_token "$RESPONSE_FILE" "https:\/\/dl-web.dropbox.com\/upload")
#echo -e " > Token = $TOKEN"
if [ "$TOKEN" == "" ]; then
    print " Failed to get Upload token!\n"
    remove_temp_files
    exit 1
fi

#If it's a single file...
if [ -f "$UPLOAD_FILE" ]; then
    dropbox_upload "$UPLOAD_FILE" "$DEST_FOLDER"
fi

#If it's a directory...
if [ -d "$UPLOAD_FILE" ]; then
    OLD_PWD=$(pwd)
    cd "$UPLOAD_FILE"
    dropbox_upload_dir "$DEST_FOLDER"
    cd "$OLD_PWD"
fi


remove_temp_files