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Add IPFS protocol support with gateway
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122
components/ipfs/browser/content_browser_client_helper.h
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| /* Copyright (c) 2019 The Brave Authors. All rights reserved. | ||
| * This Source Code Form is subject to the terms of the Mozilla Public | ||
| * License, v. 2.0. If a copy of the MPL was not distributed with this file, | ||
| * You can obtain one at http://mozilla.org/MPL/2.0/. */ | ||
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| #ifndef BRAVE_COMPONENTS_IPFS_BROWSER_CONTENT_BROWSER_CLIENT_HELPER_H_ | ||
| #define BRAVE_COMPONENTS_IPFS_BROWSER_CONTENT_BROWSER_CLIENT_HELPER_H_ | ||
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| #include <string> | ||
| #include <utility> | ||
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| #include "base/strings/strcat.h" | ||
| #include "base/strings/string_util.h" | ||
| #include "base/task/post_task.h" | ||
| #include "brave/common/url_constants.h" | ||
| #include "brave/common/extensions/extension_constants.h" | ||
| #include "chrome/browser/external_protocol/external_protocol_handler.h" | ||
| #include "content/public/browser/browser_task_traits.h" | ||
| #include "content/public/browser/browser_thread.h" | ||
| #include "content/public/browser/render_process_host.h" | ||
| #include "content/public/browser/render_view_host.h" | ||
| #include "extensions/browser/extension_registry.h" | ||
| #include "extensions/common/constants.h" | ||
| #include "extensions/common/extension_set.h" | ||
| #include "net/base/escape.h" | ||
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| namespace ipfs { | ||
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| static bool TranslateIPFSURL(const GURL& url, GURL* new_url) { | ||
| if (!url.SchemeIs(kIPFSScheme)) { | ||
| return false; | ||
| } | ||
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| std::string path = url.path(); | ||
| // In the case of a URL like ipfs://[cid]/wiki/Vincent_van_Gogh.html | ||
| // host is empty and path is //wiki/Vincent_van_Gogh.html | ||
| if (url.host().empty() && path.length() > 2 && | ||
| path.substr(0, 2) == "//") { | ||
| std::string cid(path.substr(2)); | ||
| // If we have a path after the CID, get at the real resource path | ||
| size_t pos = cid.find("/"); | ||
| std::string path; | ||
| if (pos != std::string::npos && pos != 0) { | ||
| // path would be /wiki/Vincent_van_Gogh.html | ||
| path = cid.substr(pos, cid.length() - pos); | ||
| // cid would be [cid] | ||
| cid = cid.substr(0, pos); | ||
| } | ||
| if (std::all_of(cid.begin(), cid.end(), | ||
| [loc = std::locale{}](char c) { | ||
| return std::isalnum(c, loc); | ||
| })) { | ||
| // new_url would be: | ||
| // https://dweb.link/ipfs/[cid]//wiki/Vincent_van_Gogh.html | ||
| *new_url = GURL(std::string(kDefaultIPFSGateway) + cid + path); | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
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| static bool HandleIPFSURLReverseRewrite(GURL* url, | ||
| content::BrowserContext* browser_context) { | ||
| return false; | ||
| } | ||
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| static void LoadOrLaunchIPFSURL( | ||
| const GURL& url, | ||
| content::WebContents::OnceGetter web_contents_getter, | ||
| ui::PageTransition page_transition, | ||
| bool has_user_gesture, | ||
| const base::Optional<url::Origin>& initiating_origin) { | ||
| content::WebContents* web_contents = std::move(web_contents_getter).Run(); | ||
| if (!web_contents) | ||
| return; | ||
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| web_contents->GetController().LoadURL(url, content::Referrer(), | ||
| page_transition, std::string()); | ||
| // TODO: We probably want something more like this: | ||
| /* | ||
| if (IsWebtorrentEnabled(web_contents->GetBrowserContext())) { | ||
| web_contents->GetController().LoadURL(url, content::Referrer(), | ||
| page_transition, std::string()); | ||
| } else { | ||
| ExternalProtocolHandler::LaunchUrl( | ||
| url, web_contents->GetRenderViewHost()->GetProcess()->GetID(), | ||
| web_contents->GetRenderViewHost()->GetRoutingID(), page_transition, | ||
| has_user_gesture, initiating_origin); | ||
| } | ||
| */ | ||
| } | ||
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| static bool HandleIPFSURLRewrite(GURL* url, | ||
| content::BrowserContext* browser_context) { | ||
| if (url->SchemeIs(kIPFSScheme)) { | ||
| return TranslateIPFSURL(*url, url); | ||
| } | ||
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| return false; | ||
| } | ||
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| static void HandleIPFSProtocol( | ||
| const GURL& url, | ||
| content::WebContents::OnceGetter web_contents_getter, | ||
| ui::PageTransition page_transition, | ||
| bool has_user_gesture, | ||
| const base::Optional<url::Origin>& initiating_origin) { | ||
| DCHECK(url.SchemeIs(kIPFSScheme)); | ||
| base::PostTask(FROM_HERE, {content::BrowserThread::UI}, | ||
| base::BindOnce(&LoadOrLaunchIPFSURL, url, | ||
| std::move(web_contents_getter), page_transition, | ||
| has_user_gesture, initiating_origin)); | ||
| } | ||
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| static bool IsIPFSProtocol(const GURL& url) { | ||
| GURL new_url; | ||
| return TranslateIPFSURL(url, &new_url); | ||
| } | ||
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| } // namespace ipfs | ||
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| #endif // BRAVE_COMPONENTS_IPFS_BROWSER_CONTENT_BROWSER_CLIENT_HELPER_H_ |