blueimp-file-uploader-express/lib/configs.js

This is a File Uploader for Node.js, the project is based on Blueimp jQuery File Upload developed by Sebastian Tschan.

/*jslint node: true*/

var directoryChecker = require("./directoryChecker.js");


var options = {
    tmpDir: __dirname + "/tmp",
    uploadDir: __dirname + "/public/files",
    uploadUrl: "/files/",
    maxPostSize: 11000000000, // 11 GB
    minFileSize: 1,
    maxFileSize: 10000000000, // 10 GB
    acceptFileTypes: /.+/i,
    copyImgAsThumb: true,
    useSSL: false,
    UUIDRegex: /[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/,
    // Files not matched by this regular expression force a download dialog,
    // to prevent executing any scripts in the context of the service domain:
    inlineFileTypes: /\.(gif|jpe?g|png)/i,
    imageTypes: /\.(gif|jpe?g|png)/i,
    imageVersions: {
        "thumbnail": {
            width: 100,
            height: "auto"
        }
    },
    accessControl: {
        allowOrigin: "*",
        allowMethods: "OPTIONS, HEAD, GET, POST, PUT, DELETE",
        allowHeaders: "Content-Type, Content-Range, Content-Disposition"
    },
    storage: {
        type: "local",
        aws: {
            accessKeyId: null,
            secretAccessKey: null,
            region: null,
            bucketName: null,
            acl: "public-read"
        }
    },

    /**
     * apply custom options to the default options
     */
    apply: function(opts) {
        opts = opts || {};

        for (var c in opts) {
            if (this.specialApply(c, opts[c])) continue;
            this[c] = opts[c];
        }

        this.validate();

        return this;
    },

    specialApply: function(key, opt) {
        // Special properties that cannot apply simple copy
        var specialProperties = {
            "imageVersions": true,
            "accessControl": true,
            "storage": true
        };

        if (!specialProperties[key]) {
            return false;
        }

        switch (key) {
            case "imageVersions":
                this.imageVersions.thumbnail.width = opt.maxWidth || this.imageVersions.thumbnail.width;
                this.imageVersions.thumbnail.height = opt.maxHeight || this.imageVersions.thumbnail.height;

                Object.keys(opt).forEach(function(version) {
                    if (version != "maxHeight" && version != "maxWidth") {
                        options.imageVersions[version] = opt[version];
                    }
                });

                break;

            case "accessControl":
                for (var c in opt) {
                    this.accessControl[c] = opt[c];
                }

                break;

            case "storage":
                this.storage.type = opt.type || this.storage.type;

                if (opt.aws) {
                    for (var c1 in opt.aws) {
                        this.storage.aws[c1] = opt.aws[c1];
                    }
                }

                break;
        }

        return true;
    },

    validate: function() {
        if (this.storage.type === "local") {
            directoryChecker(options.tmpDir, 0744, function(err) {
                if (err) {
                    console.log("Error at checking the " + options.tmpDir + " directory.");
                }
            });

            directoryChecker(options.uploadDir, 0744, function(err) {
                if (err) {
                    console.log("Error at checking the " + options.uploadDir + " directory.");
                }
            });

            if (options.copyImgAsThumb) {
                Object.keys(options.imageVersions).forEach(function(version) {
                    directoryChecker(options.uploadDir + "/" + version, 0744, function(err) {
                        if (err) {
                            console.log("Error at checking the " + options.uploadDir + " directory.");
                        }
                    });
                });
            }
        }

        if (this.storage.type === "aws") {
            directoryChecker(options.tmpDir, 0744, function(err) {
                if (err) {
                    console.log("Error at checking the " + options.tmpDir + " directory.");
                }
            });

            directoryChecker(options.uploadDir, 0744, function(err) {
                if (err) {
                    console.log("Error at checking the " + options.uploadDir + " directory.");
                }
            });

            if (!this.storage.aws.accessKeyId || !this.storage.aws.secretAccessKey || !this.storage.aws.bucketName) {
                throw new Error("Please enter valid details for AWS S3.");
            }
        }
    }
};


/*
 * default configurations
 */
module.exports = options;