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Fix parseAclPermissionFromOctal to include optional sticky bit (#7542)

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* Fix parseAclPermissionFromOctal to include optional sticky bit

* Fix doc
This commit is contained in:
Charles Gagnon
2019-10-07 17:21:08 -07:00
committed by GitHub
parent de72ab176c
commit c4965c7fe9
1 changed files with 15 additions and 10 deletions
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25
extensions/mssql/src/hdfs/aclEntry.ts
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@@ -236,29 +236,34 @@ export function parseAclEntry(aclString: string): AclEntry {
}
/**
* Parses an octal in the form ### into a set of @see AclEntryPermission. Each digit in the octal corresponds
* to a particular user type - owner, group and other respectively.
* Each digit is then expected to be a value between 0 and 7 inclusive, which is a bitwise OR the permission flags
* Parses an octal in the form [#]### into a combination of an optional sticky bit and a set
* of @see AclEntryPermission. Each digit in the octal corresponds to the sticky bit or a
* particular user type - owner, group and other respectively.
* If the sticky bit exists and its value is 1 then the sticky bit value is set to true.
* Each permission digit is then expected to be a value between 0 and 7 inclusive, which is a bitwise OR the permission flags
* for the file.
* 4 - Read
* 2 - Write
* 1 - Execute
* So an octal of 730 would map to :
* So an octal of 1730 would map to :
* - sticky === true
* - The owner with rwx permissions
* - The group with -wx permissions
* - All others with --- permissions
* @param octal The octal string to parse
*/
export function parseAclPermissionFromOctal(octal: string): { owner: AclEntryPermission, group: AclEntryPermission, other: AclEntryPermission } {
if (!octal || octal.length !== 3) {
throw new Error(`Invalid octal ${octal} - it must be a 3 digit string`);
export function parseAclPermissionFromOctal(octal: string): { sticky: boolean, owner: AclEntryPermission, group: AclEntryPermission, other: AclEntryPermission } {
if (!octal || (octal.length !== 3 && octal.length !== 4)) {
throw new Error(`Invalid octal ${octal} - it must be a 3 or 4 digit string`);
}
const ownerPermissionDigit = parseInt(octal[0]);
const groupPermissionDigit = parseInt(octal[1]);
const otherPermissionDigit = parseInt(octal[2]);
const sticky = octal.length === 4 ? octal[0] === '1' : false;
const ownerPermissionDigit = parseInt(octal[octal.length - 3]);
const groupPermissionDigit = parseInt(octal[octal.length - 2]);
const otherPermissionDigit = parseInt(octal[octal.length - 1]);
return {
sticky: sticky,
owner: new AclEntryPermission((ownerPermissionDigit & 4) === 4, (ownerPermissionDigit & 2) === 2, (ownerPermissionDigit & 1) === 1),
group: new AclEntryPermission((groupPermissionDigit & 4) === 4, (groupPermissionDigit & 2) === 2, (groupPermissionDigit & 1) === 1),
other: new AclEntryPermission((otherPermissionDigit & 4) === 4, (otherPermissionDigit & 2) === 2, (otherPermissionDigit & 1) === 1)