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==LICENSE-BEGIN==\n// Copyright 2017 European Digital Reading Lab. All rights reserved.\n// Licensed to the Readium Foundation under one or more contributor license agreements.\n// Use of this source code is governed by a BSD-style license\n// that can be found in the LICENSE file exposed on Github (readium) in the project repository.\n// ==LICENSE-END==\n\nimport * as debug_ from \"debug\";\nimport * as express from \"express\";\nimport * as morgan from \"morgan\";\nimport * as request from \"request\";\nimport * as requestPromise from \"request-promise-native\";\nimport * as xmldom from \"xmldom\";\n\nimport { OPDS } from \"@r2-opds-js/opds/opds1/opds\";\nimport { Entry } from \"@r2-opds-js/opds/opds1/opds-entry\";\nimport { encodeURIComponent_RFC3986, ensureAbsolute } from \"@r2-utils-js/_utils/http/UrlUtils\";\nimport { streamToBufferPromise } from \"@r2-utils-js/_utils/stream/BufferUtils\";\nimport { XML } from \"@r2-utils-js/_utils/xml-js-mapper\";\n\nimport { IRequestPayloadExtension, _urlEncoded } from \"./request-ext\";\nimport { Server } from \"./server\";\nimport { serverLCPLSD_show_PATH } from \"./server-lcp-lsd-show\";\nimport { trailingSlashRedirect } from \"./server-trailing-slash-redirect\";\nimport { serverRemotePub_PATH } from \"./server-url\";\n\nconst debug = debug_(\"r2:streamer#http/server-opds-browse-v1\");\n\n// tslint:disable-next-line:variable-name\nexport const serverOPDS_browse_v1_PATH = \"/opds-v1-browse\";\nexport function serverOPDS_browse_v1(_server: Server, topRouter: express.Application) {\n\n // tslint:disable-next-line:variable-name\n const routerOPDS_browse_v1 = express.Router({ strict: false });\n routerOPDS_browse_v1.use(morgan(\"combined\", { stream: { write: (msg: any) => debug(msg) } }));\n\n routerOPDS_browse_v1.use(trailingSlashRedirect);\n\n routerOPDS_browse_v1.get(\"/\", (_req: express.Request, res: express.Response) => {\n\n let html = \"<html><head>\";\n html += `<script type=\"text/javascript\">function encodeURIComponent_RFC3986(str) { ` +\n `return encodeURIComponent(str).replace(/[!'()*]/g, (c) => { ` +\n `return \"%\" + c.charCodeAt(0).toString(16); }); }` +\n `function go(evt) {` +\n `if (evt) { evt.preventDefault(); } var url = ` +\n `location.origin +` +\n // `location.protocol + '//' + location.hostname + ` +\n // `(location.port ? (':' + location.port) : '') + ` +\n ` '${serverOPDS_browse_v1_PATH}/' +` +\n ` encodeURIComponent_RFC3986(document.getElementById(\"url\").value);` +\n `location.href = url;}</script>`;\n html += \"</head>\";\n\n html += \"<body><h1>OPDS feed browser</h1>\";\n\n html += `<form onsubmit=\"go();return false;\">` +\n `<input type=\"text\" name=\"url\" id=\"url\" size=\"80\">` +\n `<input type=\"submit\" value=\"Go!\"></form>`;\n\n html += \"</body></html>\";\n\n res.status(200).send(html);\n });\n\n routerOPDS_browse_v1.param(\"urlEncoded\", (req, _res, next, value, _name) => {\n (req as IRequestPayloadExtension).urlEncoded = value;\n next();\n });\n\n routerOPDS_browse_v1.get(\"/:\" + _urlEncoded + \"(*)\", async (req: express.Request, res: express.Response) => {\n\n const reqparams = (req as IRequestPayloadExtension).params;\n\n if (!reqparams.urlEncoded) {\n reqparams.urlEncoded = (req as IRequestPayloadExtension).urlEncoded;\n }\n\n const urlDecoded = reqparams.urlEncoded;\n // if (urlDecoded.substr(-1) === \"/\") {\n // urlDecoded = urlDecoded.substr(0, urlDecoded.length - 1);\n // }\n debug(urlDecoded);\n\n const failure = (err: any) => {\n debug(err);\n res.status(500).send(\"<html><body><p>Internal Server Error</p><p>\"\n + err + \"</p></body></html>\");\n };\n\n const success = async (response: request.RequestResponse) => {\n\n // Object.keys(response.headers).forEach((header: string) => {\n // debug(header + \" => \" + response.headers[header]);\n // });\n\n if (response.statusCode && (response.statusCode < 200 || response.statusCode >= 300)) {\n failure(\"HTTP CODE \" + response.statusCode);\n return;\n }\n\n let responseData: Buffer;\n try {\n responseData = await streamToBufferPromise(response);\n } catch (err) {\n debug(err);\n res.status(500).send(\"<html><body><p>Internal Server Error</p><p>\"\n + err + \"</p></body></html>\");\n return;\n }\n const responseStr = responseData.toString(\"utf8\");\n const responseXml = new xmldom.DOMParser().parseFromString(responseStr);\n // debug(responseXml);\n if (!responseXml || !responseXml.documentElement) {\n res.status(500).send(\"<html><body><p>Internal Server Error</p><p>\"\n + \"XML parse fail\" + \"</p></body></html>\");\n return;\n }\n const isEntry = responseXml.documentElement.localName === \"entry\";\n let opds: OPDS | undefined;\n let opdsEntry: Entry | undefined;\n if (isEntry) {\n opdsEntry = XML.deserialize<Entry>(responseXml, Entry);\n } else {\n opds = XML.deserialize<OPDS>(responseXml, OPDS);\n }\n\n // // breakLength: 100 maxArrayLength: undefined\n // console.log(util.inspect(opds,\n // { showHidden: false, depth: 1000, colors: true, customInspect: true }));\n\n let html = \"<html><head>\";\n html += \"</head>\";\n html += \"<body><h1>\" + urlDecoded + \"</h1>\";\n if (opds && opds.Title) {\n html += \"<h2>\" + opds.Title + \"</h2>\";\n }\n if (opdsEntry && opdsEntry.Title) {\n html += \"<h2>\" + opdsEntry.Title + \"</h2>\";\n }\n if (opds && opds.Icon) {\n const iconUrl = ensureAbsolute(urlDecoded, opds.Icon);\n html += \"<img src='\" + iconUrl + \"' alt='' />\";\n }\n // if (opds.Updated) {\n // html += \"<h3>\" + opds.Updated.toUTCString() + \"</h3>\";\n // html += \"<h3>\" + opds.Updated.toDateString() + \"</h3>\";\n // html += \"<h3>\" + opds.Updated.toISOString() + \"</h3>\";\n // html += \"<h3>\" + opds.Updated.toTimeString() + \"</h3>\";\n // }\n const links = opds ? opds.Links : (opdsEntry ? opdsEntry.Links : undefined);\n if (links && links.length) {\n html += \"<p>\";\n links.forEach((link) => {\n if (link.Type &&\n (link.Type.indexOf(\"opds-catalog\") >= 0 || link.Type === \"application/atom+xml\")) {\n const linkUrl = ensureAbsolute(urlDecoded, link.Href);\n const opdsUrl = req.originalUrl.substr(0,\n req.originalUrl.indexOf(serverOPDS_browse_v1_PATH + \"/\"))\n + serverOPDS_browse_v1_PATH + \"/\" + encodeURIComponent_RFC3986(linkUrl);\n\n html += \"<a href='\" + opdsUrl\n + \"'>\" + link.Href + \"</a> (TITLE: \" + link.Title\n + \") [REL: \" + link.Rel + \"]<br/>\";\n }\n });\n html += \"</p>\";\n }\n\n function processEntry(entry: Entry) {\n\n html += \"<hr/>\";\n html += \"<div>\";\n if (opds) {\n html += \"<h3>\" + entry.Title + \"</h3>\";\n }\n if (entry.Summary) {\n if (!entry.SummaryType || entry.SummaryType === \"text\") {\n html += \"<strong>\" + entry.Summary + \"</strong>\";\n } else if (entry.SummaryType === \"html\") {\n html += \"<div>\" + entry.Summary + \"</div>\";\n }\n html += \"<br/>\";\n }\n if (entry.Content) {\n if (!entry.ContentType || entry.ContentType === \"text\") {\n html += \"<strong>\" + entry.Content + \"</strong>\";\n } else if (entry.ContentType === \"html\") {\n html += \"<div>\" + entry.Content + \"</div>\";\n }\n html += \"<br/>\";\n }\n if (entry.Links && entry.Links.length) {\n let image: string | undefined;\n let imageThumbnail: string | undefined;\n let epub: string | undefined;\n entry.Links.forEach((link) => {\n if (link.Type === \"application/epub+zip\") {\n epub = link.Href;\n }\n if (link.HasRel(\"http://opds-spec.org/image\")\n || link.HasRel(\"x-stanza-cover-image\")) {\n image = link.Href;\n }\n if (link.HasRel(\"http://opds-spec.org/image/thumbnail\")\n || link.HasRel(\"http://opds-spec.org/thumbnail\")\n || link.HasRel(\"x-stanza-cover-image-thumbnail\")) {\n imageThumbnail = link.Href;\n }\n\n if (opds && link.Type &&\n (link.Type.indexOf(\"opds-catalog\") >= 0 || link.Type === \"application/atom+xml\")) {\n const linkUrl = ensureAbsolute(urlDecoded, link.Href);\n const opdsUrl = req.originalUrl.substr(0,\n req.originalUrl.indexOf(serverOPDS_browse_v1_PATH + \"/\"))\n + serverOPDS_browse_v1_PATH + \"/\" + encodeURIComponent_RFC3986(linkUrl);\n\n html += \"<a href='\" + opdsUrl\n + \"'>\" + link.Href + \"</a> (TITLE: \" + link.Title\n + \") [REL: \" + link.Rel + \"]<br/>\";\n } else if (opds && link.Type &&\n (link.Type === \"application/vnd.readium.lcp.license.v1.0+json\")\n // && obj.rel === \"http://opds-spec.org/acquisition\"\n ) {\n const linkUrl = ensureAbsolute(urlDecoded, link.Href);\n const opdsUrl = req.originalUrl.substr(0,\n req.originalUrl.indexOf(serverOPDS_browse_v1_PATH + \"/\"))\n + serverLCPLSD_show_PATH + \"/\" + encodeURIComponent_RFC3986(linkUrl);\n\n html += \"<a href='\" + opdsUrl\n + \"'>\" + link.Href + \"</a> (TITLE: \" + link.Title\n + \") [REL: \" + link.Rel + \"]<br/>\";\n }\n });\n if (imageThumbnail) {\n const imageThumbnailUrl = ensureAbsolute(urlDecoded, imageThumbnail);\n if (image) {\n const imageUrl = ensureAbsolute(urlDecoded, image);\n html += \"<a href='\" + imageUrl + \"'><img src='\"\n + imageThumbnailUrl + \"' alt='' /></a><br/>\";\n } else {\n html += \"<img src='\" + imageThumbnailUrl + \"' alt='' /><br/>\";\n }\n } else if (image) {\n const imageUrl = ensureAbsolute(urlDecoded, image);\n html += \"<img src='\" + imageUrl + \"' alt='' /><br/>\";\n }\n if (epub) {\n const epub_ = ensureAbsolute(urlDecoded, epub);\n const epubUrl = req.originalUrl.substr(0,\n req.originalUrl.indexOf(serverOPDS_browse_v1_PATH + \"/\"))\n + serverRemotePub_PATH + \"/\" + encodeURIComponent_RFC3986(epub_);\n\n html += \"<strong><a href='\" + epubUrl + \"'>\" + epub + \"</a></strong>\";\n }\n }\n html += \"</div>\";\n }\n\n if (opds && opds.Entries && opds.Entries.length) {\n opds.Entries.forEach((entry) => {\n processEntry(entry);\n });\n }\n if (opdsEntry) {\n processEntry(opdsEntry);\n }\n\n html += \"</body></html>\";\n\n res.status(200).send(html);\n };\n\n const headers = {\n \"Accept\": \"application/json,application/xml\",\n \"Accept-Language\": \"en-UK,en-US;q=0.7,en;q=0.5\",\n \"User-Agent\": \"READIUM2\",\n };\n\n // No response streaming! :(\n // https://github.com/request/request-promise/issues/90\n const needsStreamingResponse = true;\n if (needsStreamingResponse) {\n request.get({\n headers,\n method: \"GET\",\n uri: urlDecoded,\n })\n .on(\"response\", success)\n .on(\"error\", failure);\n } else {\n let response: requestPromise.FullResponse;\n try {\n // tslint:disable-next-line:await-promise no-floating-promises\n response = await requestPromise({\n headers,\n method: \"GET\",\n resolveWithFullResponse: true,\n uri: urlDecoded,\n });\n } catch (err) {\n failure(err);\n return;\n }\n\n await success(response);\n }\n });\n\n topRouter.use(serverOPDS_browse_v1_PATH, routerOPDS_browse_v1);\n}\n"]} |