diff options
Diffstat (limited to 'html')
| -rw-r--r-- | html/install.js | 57 | ||||
| -rw-r--r-- | html/repo_query.js | 30 | ||||
| -rw-r--r-- | html/repo_query_cacher_client.js | 85 |
3 files changed, 135 insertions, 37 deletions
diff --git a/html/install.js b/html/install.js index fddee5d..a066b9b 100644 --- a/html/install.js +++ b/html/install.js @@ -51,6 +51,8 @@ #FROM common/misc.js IMPORT sha256_async AS compute_sha256 #FROM common/jsonschema.js IMPORT haketilo_validator, haketilo_schemas +#FROM html/repo_query_cacher_client.js IMPORT indirect_fetch + const coll = new Intl.Collator(); /* @@ -104,6 +106,9 @@ async function init_work() { }; work.err = function (error, user_message) { + if (!this.is_ok) + return; + if (error) console.error("Haketilo:", error); work.is_ok = false; @@ -171,35 +176,40 @@ function InstallView(tab_id, on_view_show, on_view_hide) { const url = ver ? `${this.repo_url}${item_type}/${id}/${ver.join(".")}` : `${this.repo_url}${item_type}/${id}.json`; - const response = - await browser.tabs.sendMessage(tab_id, ["repo_query", url]); - if (!work.is_ok) - return; - if ("error" in response) { - return work.err(response.error, - "Failure to communicate with repository :("); + + try { + var response = await indirect_fetch(tab_id, url); + } catch(e) { + return work.err(e, "Failure to communicate with repository :("); } + if (!work.is_ok) + return; + if (!response.ok) { return work.err(null, `Repository sent HTTP code ${response.status} :(`); } - if ("error_json" in response) { - return work.err(response.error_json, - "Repository's response is not valid JSON :("); + try { + var json = await response.json(); + } catch(e) { + return work.err(e, "Repository's response is not valid JSON :("); } + if (!work.is_ok) + return; + const captype = item_type[0].toUpperCase() + item_type.substring(1); const $id = `https://hydrilla.koszko.org/schemas/api_${item_type}_description-1.0.1.schema.json`; const schema = haketilo_schemas[$id]; - const result = haketilo_validator.validate(response.json, schema); + const result = haketilo_validator.validate(json, schema); if (result.errors.length > 0) { const reg = new RegExp(schema.allOf[2].properties.$schema.pattern); - if (response.json.$schema && !reg.test(response.json.$schema)) { + if (json.$schema && !reg.test(json.$schema)) { const msg = `${captype} ${item_id_string(id, ver)} was served using unsupported Hydrilla API version. You might need to update Haketilo.`; return work.err(result.errors, msg); } @@ -208,14 +218,14 @@ function InstallView(tab_id, on_view_show, on_view_hide) { return work.err(result.errors, msg); } - const scripts = item_type === "resource" && response.json.scripts; - const files = response.json.source_copyright.concat(scripts || []); + const scripts = item_type === "resource" && json.scripts; + const files = json.source_copyright.concat(scripts || []); if (item_type === "mapping") { - for (const res_ref of Object.values(response.json.payloads || {})) + for (const res_ref of Object.values(json.payloads || {})) process_item(work, "resource", res_ref.identifier); } else { - for (const res_ref of (response.json.dependencies || [])) + for (const res_ref of (json.dependencies || [])) process_item(work, "resource", res_ref.identifier); } @@ -234,8 +244,8 @@ function InstallView(tab_id, on_view_show, on_view_hide) { const msg = "Error accessing Haketilo's internal database :("; return work.err(e, msg); } - if (!db_def || db_def.version < response.json.version) - work.result.push({def: response.json, db_def}); + if (!db_def || db_def.version < json.version) + work.result.push({def: json, db_def}); if (--work.waiting === 0) work.resolve_cb(work.result); @@ -320,14 +330,9 @@ function InstallView(tab_id, on_view_show, on_view_hide) { return work.err(null, msg); } - try { - var text = await response.text(); - if (!work.is_ok) - return; - } catch(e) { - const msg = "Repository's response is not valid text :("; - return work.err(e, msg); - } + const text = await response.text(); + if (!work.is_ok) + return; const digest = await compute_sha256(text); if (!work.is_ok) diff --git a/html/repo_query.js b/html/repo_query.js index 601a0aa..97f60ac 100644 --- a/html/repo_query.js +++ b/html/repo_query.js @@ -49,6 +49,8 @@ #FROM html/install.js IMPORT InstallView #FROM common/jsonschema.js IMPORT haketilo_validator, haketilo_schemas +#FROM html/repo_query_cacher_client.js IMPORT indirect_fetch + const coll = new Intl.Collator(); function ResultEntry(repo_entry, mapping_ref) { @@ -76,36 +78,42 @@ function RepoEntry(query_view, repo_url) { this.repo_url_label.innerText = repo_url; - const query_results = async () => { - const msg = [ - "repo_query", - `${repo_url}query?url=${encodeURIComponent(query_view.url)}` - ]; - const response = await browser.tabs.sendMessage(query_view.tab_id, msg); + const encoded_queried_url = encodeURIComponent(query_view.url); + const query_url = `${repo_url}query?url=${encoded_queried_url}`; - if ("error" in response) + const query_results = async () => { + try { + var response = await indirect_fetch(query_view.tab_id, query_url); + } catch(e) { + console.error("Haketilo:", e); throw "Failure to communicate with repository :("; + } if (!response.ok) throw `Repository sent HTTP code ${response.status} :(`; - if ("error_json" in response) + + try { + var json = await response.json(); + } catch(e) { + console.error("Haketilo:", e); throw "Repository's response is not valid JSON :("; + } const $id = `https://hydrilla.koszko.org/schemas/api_query_result-1.0.1.schema.json`; const schema = haketilo_schemas[$id]; - const result = haketilo_validator.validate(response.json, schema); + const result = haketilo_validator.validate(json, schema); if (result.errors.length > 0) { console.error("Haketilo:", result.errors); const reg = new RegExp(schema.properties.$schema.pattern); - if (response.json.$schema && !reg.test(response.json.$schema)) + if (json.$schema && !reg.test(json.$schema)) throw "Results were served using unsupported Hydrilla API version. You might need to update Haketilo."; throw "Results were served using a nonconforming response format."; } - return response.json.mappings; + return json.mappings; } const populate_results = async () => { diff --git a/html/repo_query_cacher_client.js b/html/repo_query_cacher_client.js new file mode 100644 index 0000000..b7f49e9 --- /dev/null +++ b/html/repo_query_cacher_client.js @@ -0,0 +1,85 @@ +/** + * This file is part of Haketilo. + * + * Function: Making requests to remote repositories through a response cache in + * operating in the content script of a browser tab. + * + * Copyright (C) 2022 Wojtek Kosior <koszko@koszko.org> + * + * 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 3 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. + * + * As additional permission under GNU GPL version 3 section 7, you + * may distribute forms of that code without the copy of the GNU + * GPL normally required by section 4, provided you include this + * license notice and, in case of non-source distribution, a URL + * through which recipients can access the Corresponding Source. + * If you modify file(s) with this exception, you may extend this + * exception to your version of the file(s), but you are not + * obligated to do so. If you do not wish to do so, delete this + * exception statement from your version. + * + * As a special exception to the GPL, any HTML file which merely + * makes function calls to this code, and for that purpose + * includes it by reference shall be deemed a separate work for + * copyright law purposes. If you modify this code, you may extend + * this exception to your version of the code, but you are not + * obligated to do so. If you do not wish to do so, delete this + * exception statement from your version. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + * + * I, Wojtek Kosior, thereby promise not to sue for violation of this file's + * license. Although I request that you do not make use of this code in a + * proprietary program, I am not going to enforce this in court. + */ + +#FROM common/browser.js IMPORT browser + +/* + * This is a complementary function to error_data_jsonifiable() in + * common/misc.js. + */ +function error_from_jsonifiable_data(jsonifiable) { + const arg_props = ["message", "fileName", "lineNumber"]; + return new window[jsonifiable.name](...arg_props.map(p => jsonifiable[p])); +} + +/* + * Make it possible to recover a Response object. This is a complementary + * function to response_data_jsonifiable() in background/CORS_bypass_server.js. + */ +function response_from_jsonifiable_data(jsonifiable) { + const body = jsonifiable.body, body_len = body.length / 2; + const body_buf = new Uint8Array(body_len); + + for (let i = 0; i < body_len; i++) + body_buf[i] = parseInt(`0x${body.substring(i * 2, i * 2 + 2)}`); + + const init = { + status: jsonifiable.status, + statusText: jsonifiable.statusText, + headers: new Headers(jsonifiable.headers) + }; + + return new Response(body_buf, init); +} + +async function indirect_fetch(tab_id, url) { + const msg = ["repo_query", url]; + const jsonifiable = await browser.tabs.sendMessage(tab_id, msg); + + if ("error" in jsonifiable) + throw error_from_jsonifiable_data(jsonifiable); + + return response_from_jsonifiable_data(jsonifiable); +} +#EXPORT indirect_fetch |