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HADOOP-10277. setfacl -x fails to parse ACL spec if trying to remove the mask entry. Contributed by Vinay. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-4685@1561769 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Chris Nauroth 2014-01-27 18:03:30 +00:00
parent 738b076cc6
commit b98b344b9a
3 changed files with 115 additions and 49 deletions
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125
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/permission/AclEntry.java
View File

@ -210,7 +210,7 @@ public class AclEntry {
* But for removeAcl operation it will be false. i.e. AclSpec should
* not contain permissions.<br>
* Example: "user:foo,group:bar"
* @return Returns list of AclEntries parsed
* @return Returns list of {@link AclEntry} parsed
*/
public static List<AclEntry> parseAclSpec(String aclSpec,
boolean includePermission) {
@ -218,53 +218,84 @@ public class AclEntry {
Collection<String> aclStrings = StringUtils.getStringCollection(aclSpec,
",");
for (String aclStr : aclStrings) {
AclEntry.Builder builder = new AclEntry.Builder();
// Here "::" represent one empty string.
// StringUtils.getStringCollection() will ignore this.
String[] split = aclStr.split(":");
int expectedAclSpecLength = 2;
if (includePermission) {
expectedAclSpecLength = 3;
}
if (split.length != expectedAclSpecLength
&& !(split.length == expectedAclSpecLength + 1 && "default"
.equals(split[0]))) {
throw new HadoopIllegalArgumentException("Invalid <aclSpec> : "
+ aclStr);
}
int index = 0;
if (split.length == expectedAclSpecLength + 1) {
assert "default".equals(split[0]);
// default entry
index++;
builder.setScope(AclEntryScope.DEFAULT);
}
String type = split[index++];
AclEntryType aclType = null;
try {
aclType = Enum.valueOf(AclEntryType.class, type.toUpperCase());
builder.setType(aclType);
} catch (IllegalArgumentException iae) {
throw new HadoopIllegalArgumentException(
"Invalid type of acl in <aclSpec> :" + aclStr);
}
String name = split[index++];
if (!name.isEmpty()) {
builder.setName(name);
}
if (expectedAclSpecLength == 3) {
String permission = split[index++];
FsAction fsAction = FsAction.getFsAction(permission);
if (null == fsAction) {
throw new HadoopIllegalArgumentException(
"Invalid permission in <aclSpec> : " + aclStr);
}
builder.setPermission(fsAction);
}
aclEntries.add(builder.build());
AclEntry aclEntry = parseAclEntry(aclStr, includePermission);
aclEntries.add(aclEntry);
}
return aclEntries;
}
/**
* Parses a string representation of an ACL into a AclEntry object.<br>
*
* @param aclStr
* String representation of an ACL.<br>
* Example: "user:foo:rw-"
* @param includePermission
* for setAcl operations this will be true. i.e. Acl should include
* permissions.<br>
* But for removeAcl operation it will be false. i.e. Acl should not
* contain permissions.<br>
* Example: "user:foo,group:bar,mask::"
* @return Returns an {@link AclEntry} object
*/
public static AclEntry parseAclEntry(String aclStr,
boolean includePermission) {
AclEntry.Builder builder = new AclEntry.Builder();
// Here "::" represent one empty string.
// StringUtils.getStringCollection() will ignore this.
String[] split = aclStr.split(":");
if (split.length == 0) {
throw new HadoopIllegalArgumentException("Invalid <aclSpec> : " + aclStr);
}
int index = 0;
if ("default".equals(split[0])) {
// default entry
index++;
builder.setScope(AclEntryScope.DEFAULT);
}
if (split.length <= index) {
throw new HadoopIllegalArgumentException("Invalid <aclSpec> : " + aclStr);
}
AclEntryType aclType = null;
try {
aclType = Enum.valueOf(AclEntryType.class, split[index].toUpperCase());
builder.setType(aclType);
index++;
} catch (IllegalArgumentException iae) {
throw new HadoopIllegalArgumentException(
"Invalid type of acl in <aclSpec> :" + aclStr);
}
if (split.length > index) {
String name = split[index];
if (!name.isEmpty()) {
builder.setName(name);
}
index++;
}
if (includePermission) {
if (split.length < index) {
throw new HadoopIllegalArgumentException("Invalid <aclSpec> : "
+ aclStr);
}
String permission = split[index];
FsAction fsAction = FsAction.getFsAction(permission);
if (null == fsAction) {
throw new HadoopIllegalArgumentException(
"Invalid permission in <aclSpec> : " + aclStr);
}
builder.setPermission(fsAction);
index++;
}
if (split.length > index) {
throw new HadoopIllegalArgumentException("Invalid <aclSpec> : " + aclStr);
}
AclEntry aclEntry = builder.build();
return aclEntry;
}
}

36
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/fs/shell/TestAclCommands.java
View File

@ -66,7 +66,7 @@ public class TestAclCommands {
assertFalse("setfacl should fail with permissions for -x",
0 == runCommand(new String[] { "-setfacl", "-x", "user:user1:rwx",
"/path" }));
assertFalse("setfacl should fail with permissions for -x",
assertFalse("setfacl should fail ACL spec missing",
0 == runCommand(new String[] { "-setfacl", "-m",
"", "/path" }));
}
@ -74,7 +74,8 @@ public class TestAclCommands {
@Test
public void testMultipleAclSpecParsing() throws Exception {
List<AclEntry> parsedList = AclEntry.parseAclSpec(
"group::rwx,user:user1:rwx,user:user2:rw-,group:group1:rw-,default:group:group1:rw-", true);
"group::rwx,user:user1:rwx,user:user2:rw-,"
+ "group:group1:rw-,default:group:group1:rw-", true);
AclEntry basicAcl = new AclEntry.Builder().setType(AclEntryType.GROUP)
.setPermission(FsAction.ALL).build();
@ -96,6 +97,37 @@ public class TestAclCommands {
assertEquals("Parsed Acl not correct", expectedList, parsedList);
}
@Test
public void testMultipleAclSpecParsingWithoutPermissions() throws Exception {
List<AclEntry> parsedList = AclEntry.parseAclSpec(
"user::,user:user1:,group::,group:group1:,mask::,other::,"
+ "default:user:user1::,default:mask::", false);
AclEntry owner = new AclEntry.Builder().setType(AclEntryType.USER).build();
AclEntry namedUser = new AclEntry.Builder().setType(AclEntryType.USER)
.setName("user1").build();
AclEntry group = new AclEntry.Builder().setType(AclEntryType.GROUP).build();
AclEntry namedGroup = new AclEntry.Builder().setType(AclEntryType.GROUP)
.setName("group1").build();
AclEntry mask = new AclEntry.Builder().setType(AclEntryType.MASK).build();
AclEntry other = new AclEntry.Builder().setType(AclEntryType.OTHER).build();
AclEntry defaultUser = new AclEntry.Builder()
.setScope(AclEntryScope.DEFAULT).setType(AclEntryType.USER)
.setName("user1").build();
AclEntry defaultMask = new AclEntry.Builder()
.setScope(AclEntryScope.DEFAULT).setType(AclEntryType.MASK).build();
List<AclEntry> expectedList = new ArrayList<AclEntry>();
expectedList.add(owner);
expectedList.add(namedUser);
expectedList.add(group);
expectedList.add(namedGroup);
expectedList.add(mask);
expectedList.add(other);
expectedList.add(defaultUser);
expectedList.add(defaultMask);
assertEquals("Parsed Acl not correct", expectedList, parsedList);
}
private int runCommand(String[] commands) throws Exception {
return ToolRunner.run(conf, new FsShell(), commands);
}

3
hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-4685.txt
View File

@ -58,3 +58,6 @@ HDFS-4685 (Unreleased)
(Vinay via cnauroth)
HDFS-5799. Make audit logging consistent across ACL APIs. (cnauroth)
HADOOP-10277. setfacl -x fails to parse ACL spec if trying to remove the
mask entry. (Vinay via cnauroth)