299 lines
7.7 KiB
JavaScript
299 lines
7.7 KiB
JavaScript
'use strict';
|
|
'require rpc';
|
|
|
|
/**
|
|
* @typedef {Object} FileStatEntry
|
|
* @memberof LuCI.fs
|
|
|
|
* @property {string} name - Name of the directory entry
|
|
* @property {string} type - Type of the entry, one of `block`, `char`, `directory`, `fifo`, `symlink`, `file`, `socket` or `unknown`
|
|
* @property {number} size - Size in bytes
|
|
* @property {number} mode - Access permissions
|
|
* @property {number} atime - Last access time in seconds since epoch
|
|
* @property {number} mtime - Last modification time in seconds since epoch
|
|
* @property {number} ctime - Last change time in seconds since epoch
|
|
* @property {number} inode - Inode number
|
|
* @property {number} uid - Numeric owner id
|
|
* @property {number} gid - Numeric group id
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Object} FileExecResult
|
|
* @memberof LuCI.fs
|
|
*
|
|
* @property {number} code - The exit code of the invoked command
|
|
* @property {string} [stdout] - The stdout produced by the command, if any
|
|
* @property {string} [stderr] - The stderr produced by the command, if any
|
|
*/
|
|
|
|
var callFileList, callFileStat, callFileRead, callFileWrite, callFileRemove,
|
|
callFileExec, callFileMD5;
|
|
|
|
callFileList = rpc.declare({
|
|
object: 'file',
|
|
method: 'list',
|
|
params: [ 'path' ]
|
|
});
|
|
|
|
callFileStat = rpc.declare({
|
|
object: 'file',
|
|
method: 'stat',
|
|
params: [ 'path' ]
|
|
});
|
|
|
|
callFileRead = rpc.declare({
|
|
object: 'file',
|
|
method: 'read',
|
|
params: [ 'path' ]
|
|
});
|
|
|
|
callFileWrite = rpc.declare({
|
|
object: 'file',
|
|
method: 'write',
|
|
params: [ 'path', 'data', 'mode' ]
|
|
});
|
|
|
|
callFileRemove = rpc.declare({
|
|
object: 'file',
|
|
method: 'remove',
|
|
params: [ 'path' ]
|
|
});
|
|
|
|
callFileExec = rpc.declare({
|
|
object: 'file',
|
|
method: 'exec',
|
|
params: [ 'command', 'params', 'env' ]
|
|
});
|
|
|
|
callFileMD5 = rpc.declare({
|
|
object: 'file',
|
|
method: 'md5',
|
|
params: [ 'path' ]
|
|
});
|
|
|
|
var rpcErrors = [
|
|
null,
|
|
'InvalidCommandError',
|
|
'InvalidArgumentError',
|
|
'MethodNotFoundError',
|
|
'NotFoundError',
|
|
'NoDataError',
|
|
'PermissionError',
|
|
'TimeoutError',
|
|
'UnsupportedError'
|
|
];
|
|
|
|
function handleRpcReply(expect, rc) {
|
|
if (typeof(rc) == 'number' && rc != 0) {
|
|
var e = new Error(rpc.getStatusText(rc)); e.name = rpcErrors[rc] || 'Error';
|
|
throw e;
|
|
}
|
|
|
|
if (expect) {
|
|
var type = Object.prototype.toString;
|
|
|
|
for (var key in expect) {
|
|
if (rc != null && key != '')
|
|
rc = rc[key];
|
|
|
|
if (rc == null || type.call(rc) != type.call(expect[key])) {
|
|
var e = new Error(_('Unexpected reply data format')); e.name = 'TypeError';
|
|
throw e;
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* @class fs
|
|
* @memberof LuCI
|
|
* @hideconstructor
|
|
* @classdesc
|
|
*
|
|
* Provides high level utilities to wrap file system related RPC calls.
|
|
* To import the class in views, use `'require fs'`, to import it in
|
|
* external JavaScript, use `L.require("fs").then(...)`.
|
|
*/
|
|
var FileSystem = L.Class.extend(/** @lends LuCI.fs.prototype */ {
|
|
/**
|
|
* Obtains a listing of the specified directory.
|
|
*
|
|
* @param {string} path
|
|
* The directory path to list.
|
|
*
|
|
* @returns {Promise<LuCI.fs.FileStatEntry[]>}
|
|
* Returns a promise resolving to an array of stat detail objects or
|
|
* rejecting with an error stating the failure reason.
|
|
*/
|
|
list: function(path) {
|
|
return callFileList(path).then(handleRpcReply.bind(this, { entries: [] }));
|
|
},
|
|
|
|
/**
|
|
* Return file stat information on the specified path.
|
|
*
|
|
* @param {string} path
|
|
* The filesystem path to stat.
|
|
*
|
|
* @returns {Promise<LuCI.fs.FileStatEntry>}
|
|
* Returns a promise resolving to a stat detail object or
|
|
* rejecting with an error stating the failure reason.
|
|
*/
|
|
stat: function(path) {
|
|
return callFileStat(path).then(handleRpcReply.bind(this, { '': {} }));
|
|
},
|
|
|
|
/**
|
|
* Read the contents of the given file and return them.
|
|
* Note: this function is unsuitable for obtaining binary data.
|
|
*
|
|
* @param {string} path
|
|
* The file path to read.
|
|
*
|
|
* @returns {Promise<string>}
|
|
* Returns a promise resolving to a string containing the file contents or
|
|
* rejecting with an error stating the failure reason.
|
|
*/
|
|
read: function(path) {
|
|
return callFileRead(path).then(handleRpcReply.bind(this, { data: '' }));
|
|
},
|
|
|
|
/**
|
|
* Write the given data to the specified file path.
|
|
* If the specified file path does not exist, it will be created, given
|
|
* sufficient permissions.
|
|
*
|
|
* Note: `data` will be converted to a string using `String(data)` or to
|
|
* `''` when it is `null`.
|
|
*
|
|
* @param {string} path
|
|
* The file path to write to.
|
|
*
|
|
* @param {*} [data]
|
|
* The file data to write. If it is null, it will be set to an empty
|
|
* string.
|
|
*
|
|
* @param {number} [mode]
|
|
* The permissions to use on file creation. Default is 420 (0644).
|
|
*
|
|
* @returns {Promise<number>}
|
|
* Returns a promise resolving to `0` or rejecting with an error stating
|
|
* the failure reason.
|
|
*/
|
|
write: function(path, data, mode) {
|
|
data = (data != null) ? String(data) : '';
|
|
mode = (mode != null) ? mode : 420; // 0644
|
|
return callFileWrite(path, data, mode).then(handleRpcReply.bind(this, { '': 0 }));
|
|
},
|
|
|
|
/**
|
|
* Unlink the given file.
|
|
*
|
|
* @param {string}
|
|
* The file path to remove.
|
|
*
|
|
* @returns {Promise<number>}
|
|
* Returns a promise resolving to `0` or rejecting with an error stating
|
|
* the failure reason.
|
|
*/
|
|
remove: function(path) {
|
|
return callFileRemove(path).then(handleRpcReply.bind(this, { '': 0 }));
|
|
},
|
|
|
|
/**
|
|
* Execute the specified command, optionally passing params and
|
|
* environment variables.
|
|
*
|
|
* Note: The `command` must be either the path to an executable,
|
|
* or a basename without arguments in which case it will be searched
|
|
* in $PATH. If specified, the values given in `params` will be passed
|
|
* as arguments to the command.
|
|
*
|
|
* The key/value pairs in the optional `env` table are translated to
|
|
* `setenv()` calls prior to running the command.
|
|
*
|
|
* @param {string} command
|
|
* The command to invoke.
|
|
*
|
|
* @param {string[]} [params]
|
|
* The arguments to pass to the command.
|
|
*
|
|
* @param {Object.<string, string>} [env]
|
|
* Environment variables to set.
|
|
*
|
|
* @returns {Promise<LuCI.fs.FileExecResult>}
|
|
* Returns a promise resolving to an object describing the execution
|
|
* results or rejecting with an error stating the failure reason.
|
|
*/
|
|
exec: function(command, params, env) {
|
|
if (!Array.isArray(params))
|
|
params = null;
|
|
|
|
if (!L.isObject(env))
|
|
env = null;
|
|
|
|
return callFileExec(command, params, env).then(handleRpcReply.bind(this, { '': {} }));
|
|
},
|
|
|
|
/**
|
|
* Read the contents of the given file, trim leading and trailing white
|
|
* space and return the trimmed result. In case of errors, return an empty
|
|
* string instead.
|
|
*
|
|
* Note: this function is useful to read single-value files in `/sys`
|
|
* or `/proc`.
|
|
*
|
|
* This function is guaranteed to not reject its promises, on failure,
|
|
* an empty string will be returned.
|
|
*
|
|
* @param {string} path
|
|
* The file path to read.
|
|
*
|
|
* @returns {Promise<string>}
|
|
* Returns a promise resolving to the file contents or the empty string
|
|
* on failure.
|
|
*/
|
|
trimmed: function(path) {
|
|
return L.resolveDefault(this.read(path), '').then(function(s) {
|
|
return s.trim();
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Read the contents of the given file, split it into lines, trim
|
|
* leading and trailing white space of each line and return the
|
|
* resulting array.
|
|
*
|
|
* This function is guaranteed to not reject its promises, on failure,
|
|
* an empty array will be returned.
|
|
*
|
|
* @param {string} path
|
|
* The file path to read.
|
|
*
|
|
* @returns {Promise<string[]>}
|
|
* Returns a promise resolving to an array containing the stripped lines
|
|
* of the given file or `[]` on failure.
|
|
*/
|
|
lines: function(path) {
|
|
return L.resolveDefault(this.read(path), '').then(function(s) {
|
|
var lines = [];
|
|
|
|
s = s.trim();
|
|
|
|
if (s != '') {
|
|
var l = s.split(/\n/);
|
|
|
|
for (var i = 0; i < l.length; i++)
|
|
lines.push(l[i].trim());
|
|
}
|
|
|
|
return lines;
|
|
});
|
|
}
|
|
});
|
|
|
|
return FileSystem;
|