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Implement import function

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* Add ESLint rules
* Change code style : using semi-columns
* Change error notification : using pre + wrap to be able to add
  newlines
* Bump version to 1.4.0
This commit is contained in:
Corentin 2024-03-04 14:07:46 +09:00
commit c20a6397fc
11 changed files with 433 additions and 336 deletions
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104
background.js
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@ -4,74 +4,74 @@ let state = {
salt: window.crypto.getRandomValues(new Uint8Array(16)),
key: null,
entries: []
}
};
let popup_port = null // communication channel with popup
let popup_port = null; // communication channel with popup
function send_state(state)
{
popup_port.postMessage({type: 'state', data: state})
popup_port.postMessage({type: 'state', data: state});
}
function show_error(error)
{
console.error(error)
popup_port.postMessage({type: 'notification', data: error})
console.error(error);
popup_port.postMessage({type: 'notification', data: error});
}
function b32decode(text)
{
const up_text = text.toUpperCase()
let result = []
let lshift = 3
let carry = 0
const up_text = text.toUpperCase();
let result = [];
let lshift = 3;
let carry = 0;
for(const index in up_text)
{
const char = up_text[index]
const char = up_text[index];
if(char === '=')
break
let value = char.charCodeAt()
if(value >= 65 && value <= 90) // char in [A- Z]
value -= 65
else if(value >= 50 && value <= 55) // char in [2-7]
value -= 24
else
throw `Incorrect Base32 char '${text[index]}' at index ${index}`
break;
let value = char.charCodeAt();
if(value >= 65 && value <= 90) // char in [A- Z]
value -= 65;
else if(value >= 50 && value <= 55) // char in [2-7]
value -= 24;
else
throw `Incorrect Base32 char '${text[index]}' at index ${index}`;
if(lshift > 0) // next value is needed to complete the octet
{
carry += value << lshift
lshift -= 5
carry += value << lshift;
lshift -= 5;
if(lshift === 0) // last value aligned with octet
carry = 0
carry = 0;
}
else // getting the last octet' bits
{
result.push(carry + (value >>> (-lshift)))
carry = (value << (lshift + 8)) & 248 // if lshit is 0 this will always be 0
lshift += 3
result.push(carry + (value >>> (-lshift)));
carry = (value << (lshift + 8)) & 248; // if lshit is 0 this will always be 0
lshift += 3;
}
}
if(carry !== 0)
result.push(carry)
return result
result.push(carry);
return result;
}
// Create encryption key from password
async function setKey(password)
{
const storage = await browser.storage.local.get()
const storage = await browser.storage.local.get();
if(storage.entries !== undefined && storage.iv !== undefined && storage.salt !== undefined)
{
try
{
state.iv = new Uint8Array(b32decode(storage.iv))
state.salt = new Uint8Array(b32decode(storage.salt))
state.iv = new Uint8Array(b32decode(storage.iv));
state.salt = new Uint8Array(b32decode(storage.salt));
}
catch(error)
{
show_error(error)
return
show_error(error);
return;
}
}
@ -81,7 +81,7 @@ async function setKey(password)
encoder.encode(password),
'PBKDF2',
false,
['deriveKey'])
['deriveKey']);
state.key = await window.crypto.subtle.deriveKey(
{
name: "PBKDF2",
@ -92,26 +92,26 @@ async function setKey(password)
key_material,
{ "name": "AES-GCM", "length": 256},
true,
["encrypt", "decrypt"])
["encrypt", "decrypt"]);
// If entries are set in the state we automatically restore them
if(storage.entries !== undefined)
restore(storage)
restore(storage);
else
send_state(state)
send_state(state);
}
// Decrypt entries saved in local storage
async function restore(storage)
{
let decoded_secret = null
let decoded_secret = null;
try
{
decoded_secret = new Uint8Array(b32decode(storage.entries))
decoded_secret = new Uint8Array(b32decode(storage.entries));
}
catch(error)
{
show_error(error)
return
show_error(error);
return;
}
try
@ -125,36 +125,36 @@ async function restore(storage)
);
let decoder = new TextDecoder();
state.entries = JSON.parse(decoder.decode(decrypted))
send_state(state)
state.entries = JSON.parse(decoder.decode(decrypted));
send_state(state);
}
catch(_error)
{
state.key = null
show_error('Cannot decrypt entries: wrong password')
state.key = null;
show_error('Cannot decrypt entries: wrong password');
}
}
function connected(port) {
popup_port = port
popup_port = port;
popup_port.onMessage.addListener((message) => {
if(message.command === 'init')
if(message.command === 'init')
{
if(state.key === null)
send_state(state)
send_state(state);
else
browser.storage.local.get().then((storage) => { restore(storage) })
browser.storage.local.get().then((storage) => { restore(storage); });
}
else if(message.command === 'key')
setKey(message.password)
setKey(message.password);
else if(message.command === 'logout')
{
state.key = null
state.entries = []
state.key = null;
state.entries = [];
}
else
show_error(`Wrong message: ${message}`)
})
show_error(`Wrong message: ${message}`);
});
}
browser.runtime.onConnect.addListener(connected);