1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
'use strict';
{
let xmlFeedOrImage = /^(?:(?:application|text)\/(?:(?:r(?:ss|df)|atom)\+)xml(;|$))|image\//i;
let rawXml = /^(?:application|text)\/xml;/i;
let brokenXMLOnLoad;
let pendingRequests = new Map();
let reloadingTabs = new Map();
let tabKey = (tabId, url) => `${tabId}:${url}`;
let cleanup = r => {
pendingRequests.delete(r.requestId);
let key = tabKey(r.tabId, r.url);
if (reloadingTabs.get(key) === false) {
reloadingTabs.delete(key);
}
};
let filter = {
urls: ["<all_urls>"],
types: ["main_frame", "sub_frame", "object"]
};
for (let event of ["onCompleted", "onErrorOccurred"])
browser.webRequest[event].addListener(cleanup, filter);
let executeAll = async (scripts, where) => {
let {url, tabId, frameId} = where;
let count = 0;
for (let details of scripts.values()) {
details = Object.assign({
runAt: "document_start",
matchAboutBlank: true,
frameId,
}, details);
try {
await browser.tabs.executeScript(tabId, details);
count++;
debug("Execute on start OK", url, details);
} catch (e) {
error(e, "Execute on start failed", url, details);
}
}
return count;
};
var RequestUtil = {
getContentMetaData(request) {
return request.content || (request.content = new ContentMetaData(request));
},
async executeOnStart(request, details) {
let {requestId, url, tabId, frameId, statusCode} = request;
if (statusCode >= 300 && statusCode < 400) return;
if (frameId === 0) {
let key = tabKey(tabId, url);
debug("Checking whether %s is a reloading tab...", key);
if (reloadingTabs.get(key)) {
reloadingTabs.set(key, false); // doom it for removal in cleanup
return;
}
}
let content = this.getContentMetaData(request);
if (content.disposition) {
debug("Skipping execute on start of %s %o", url, content);
return;
}
debug("Injecting script on start in %s (%o)", url, content);
let scripts = pendingRequests.get(requestId);
let scriptKey = JSON.stringify(details);
if (!scripts) {
pendingRequests.set(requestId, scripts = new Map());
scripts.set(scriptKey, details);
} else {
scripts.set(scriptKey, details);
return;
}
if (xmlFeedOrImage.test(content.type) && !/\/svg\b/i.test(content.type)) return;
if (typeof brokenXMLOnLoad === "undefined") {
brokenXMLOnLoad = await (async () => parseInt((await browser.runtime.getBrowserInfo()).version) < 61)();
}
let mustCheckFeed = brokenXMLOnLoad && frameId === 0 && rawXml.test(content.type);
debug("mustCheckFeed = %s, brokenXMLOnLoad = %s", mustCheckFeed, brokenXMLOnLoad);
let filter = browser.webRequest.filterResponseData(requestId);
let buffer = [];
let first = true;
let done = false;
let mustReload = false;
let runAndFlush = async () => {
let scriptsRan = await executeAll(scripts, request);
if (mustCheckFeed && !scriptsRan) {
mustReload = true;
debug(`Marking as "must reload"`, tabId, url);
reloadingTabs.set(tabKey(tabId, url), true);
}
if (buffer && buffer.length) {
debug("Flushing %s buffer chunks", buffer.length);
for (let chunk of buffer) {
filter.write(chunk);
}
filter.disconnect();
buffer = null;
}
if (done) {
filter.onstop(null);
}
};
filter.ondata = event => {
if (first) {
runAndFlush();
first = false;
}
if (buffer) {
buffer.push(event.data);
return;
}
debug("ondata", url);
filter.write(event.data);
filter.disconnect();
};
filter.onstop = event => {
done = true;
if (mustReload && !buffer) {
mustReload = false;
browser.tabs.update(tabId, {url});
}
}
}
}
}
|