使用可可應用中的NSTask執行命令時使用sudo auth會話

Question

我有一個需要使用sudo執行命令的應用程序。如何獲得密碼，如果成功，請使用NSTask運行sudo命令。

Answer 1

使用授權服務Luke。 （如果你見過的「應用程序XYZ需要一個管理員密碼才能繼續」，這是它是如何實現的，它的作用牀單下不使用sudo的。）

http://developer.apple.com/library/mac/#documentation/Security/Conceptual/authorization_concepts/01introduction/introduction.html

Answer 2

如果你尋找更輕量級的解決方案，還有另一種方法。我寫了這個通用的實現應該實現你想要的：

- (BOOL) runProcessAsAdministrator:(NSString*)scriptPath 
        withArguments:(NSArray *)arguments 
          output:(NSString **)output 
        errorDescription:(NSString **)errorDescription { 

    NSString * allArgs = [arguments componentsJoinedByString:@" "]; 
    NSString * fullScript = [NSString stringWithFormat:@"%@ %@", scriptPath, allArgs]; 

    NSDictionary *errorInfo = [NSDictionary new]; 
    NSString *script = [NSString stringWithFormat:@"do shell script \"%@\" with administrator privileges", fullScript]; 

    NSAppleScript *appleScript = [[NSAppleScript new] initWithSource:script]; 
    NSAppleEventDescriptor * eventResult = [appleScript executeAndReturnError:&errorInfo]; 

    // Check errorInfo 
    if (! eventResult) 
    { 
     // Describe common errors 
     *errorDescription = nil; 
     if ([errorInfo valueForKey:NSAppleScriptErrorNumber]) 
     { 
      NSNumber * errorNumber = (NSNumber *)[errorInfo valueForKey:NSAppleScriptErrorNumber]; 
      if ([errorNumber intValue] == -128) 
       *errorDescription = @"The administrator password is required to do this."; 
     } 

     // Set error message from provided message 
     if (*errorDescription == nil) 
     { 
      if ([errorInfo valueForKey:NSAppleScriptErrorMessage]) 
       *errorDescription = (NSString *)[errorInfo valueForKey:NSAppleScriptErrorMessage]; 
     } 

     return NO; 
    } 
    else 
    { 
     // Set output to the AppleScript's output 
     *output = [eventResult stringValue]; 

     return YES; 
    } 
} 

用例：

NSString * output = nil; 
    NSString * processErrorDescription = nil; 
    BOOL success = [self runProcessAsAdministrator:@"/usr/bin/id" 
        withArguments:[NSArray arrayWithObjects:@"-un", nil] 
          output:&output 
          errorDescription:&processErrorDescription 
        asAdministrator:YES]; 


    if (!success) // Process failed to run 
    { 
     // ...look at errorDescription 
    } 
    else 
    { 
     // ...process output 
    } 

帽尖到user950473。