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* Fix entry edit
This commit is contained in:
Corentin 2023-03-20 06:12:08 +09:00
commit 718315d7c4
4 changed files with 185 additions and 40 deletions
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69
background.js
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@ -8,6 +8,17 @@ let state = {
let popup_port = null // communication channel with popup
function send_state(state)
{
popup_port.postMessage({type: 'state', data: state})
}
function show_error(error)
{
console.error(error)
popup_port.postMessage({type: 'notification', data: error})
}
function b32decode(text)
{
const up_text = text.toUpperCase()
@ -19,11 +30,13 @@ function b32decode(text)
const char = up_text[index]
if(char === '=')
break
let value = char.charCodeAt() - 65
if(value < 0)
value += 41
if(value < 0 || value > 31)
throw `Incorrect Base32 char '${text[index]}' at index ${index}`
let value = char.charCodeAt()
if(value >= 65 && value <= 90) // char in [A- Z]
value -= 65
else if(value >= 50 && value <= 55) // char in [2-7]
value -= 24
else
throw `Incorrect Base32 char '${text[index]}' at index ${index}`
if(lshift > 0) // next value is needed to complete the octet
{
@ -50,8 +63,16 @@ async function setKey(password)
const storage = await browser.storage.local.get()
if(storage.entries !== undefined && storage.iv !== undefined && storage.salt !== undefined)
{
state.iv = new Uint8Array(b32decode(storage.iv))
state.salt = new Uint8Array(b32decode(storage.salt))
try
{
state.iv = new Uint8Array(b32decode(storage.iv))
state.salt = new Uint8Array(b32decode(storage.salt))
}
catch(error)
{
show_error(error)
return
}
}
let encoder = new TextEncoder();
@ -76,12 +97,23 @@ async function setKey(password)
if(storage.entries !== undefined)
restore(storage)
else
popup_port.postMessage(state)
send_state(state)
}
// Decrypt entries saved in local storage
async function restore(storage)
{
let decoded_secret = null
try
{
decoded_secret = new Uint8Array(b32decode(storage.entries))
}
catch(error)
{
show_error(error)
return
}
try
{
let decrypted = await window.crypto.subtle.decrypt(
@ -89,17 +121,16 @@ async function restore(storage)
name: "AES-GCM",
iv: state.iv
},
state.key,
new Uint8Array(b32decode(storage.entries))
state.key, decoded_secret
);
let decoder = new TextDecoder();
state.entries = JSON.parse(decoder.decode(decrypted))
popup_port.postMessage(state)
send_state(state)
}
catch (error)
catch(_error)
{
console.error('Cannot decrypt entries: wrong password')
show_error('Cannot decrypt entries: wrong password')
}
}
@ -109,11 +140,9 @@ function connected(port) {
if(message.command === 'init')
{
if(state.key === null)
popup_port.postMessage(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)
@ -123,8 +152,8 @@ function connected(port) {
state.entries = []
}
else
console.error(`Wrong message: ${message}`)
show_error(`Wrong message: ${message}`)
})
}
}
browser.runtime.onConnect.addListener(connected);
browser.runtime.onConnect.addListener(connected);