prerm.mm

   1 #import <Foundation/Foundation.h>
   2
   3 #include <sys/types.h>
   4 #include <pwd.h>
   5 #include <unistd.h>
   6
   7 int main(int argc, const char *argv[]) {
   8     if (argc < 2 || strcmp(argv[1], "remove") != 0)
   9         return 0;
  10
  11     struct passwd *passwd = getpwnam("mobile");
  12     if (passwd == NULL) {
  13         perror("getpwnam");
  14         return 0;
  15     }
  16
  17     if (setregid(passwd->pw_gid, passwd->pw_gid) == -1) {
  18         perror("setregid");
  19         return 1;
  20     }
  21
  22     if (setreuid(passwd->pw_uid, passwd->pw_uid) == -1) {
  23         perror("setreuid");
  24         return 1;
  25     }
  26
  27     NSAutoreleasePool *pool([[NSAutoreleasePool alloc] init]);
  28
  29     NSString *path([NSString stringWithFormat:@"%@/Library/Preferences/com.apple.springboard.plist", NSHomeDirectory()]);
  30
  31     NSMutableDictionary *settings([[NSMutableDictionary alloc] initWithContentsOfFile:path]);
  32     if (settings == nil)
  33         return 0;
  34
  35     NSMutableDictionary *iconState([settings objectForKey:@"iconState"]);
  36     if (iconState == nil)
  37         return 0;
  38
  39     NSMutableDictionary *buttonBar([iconState objectForKey:@"buttonBar"]);
  40     if (buttonBar == nil)
  41         return 0;
  42
  43     NSMutableArray *buttonBarIconMatrix([buttonBar objectForKey:@"iconMatrix"]);
  44     if (buttonBarIconMatrix == nil || [buttonBarIconMatrix count] == 0)
  45         return 0;
  46
  47     NSMutableArray *buttonBarRow([buttonBarIconMatrix objectAtIndex:0]);
  48     if (buttonBarRow == nil || [buttonBarRow count] < 5)
  49         return 0;
  50
  51     NSMutableDictionary *fifth([buttonBarRow objectAtIndex:4]);
  52
  53     if (![fifth isEqual:[NSNumber numberWithInt:0]]) {
  54         NSMutableArray *iconLists([iconState objectForKey:@"iconLists"]);
  55         if (iconLists == nil)
  56             iconLists = [NSMutableArray arrayWithCapacity:1];
  57         else for (NSUInteger i(0), e([iconLists count]); i != e; ++i) {
  58             NSMutableDictionary *iconList([iconLists objectAtIndex:i]);
  59             NSMutableArray *iconMatrix([iconList objectForKey:@"iconMatrix"]);
  60             if (iconMatrix == nil)
  61                 continue;
  62
  63             for (NSUInteger i(0), e([iconMatrix count]); i != e; ++i) {
  64                 NSMutableArray *row([iconMatrix objectAtIndex:i]);
  65                 NSUInteger spot([row indexOfObject:[NSNumber numberWithInteger:0]]);
  66                 if (spot != NSNotFound) {
  67                     [row replaceObjectAtIndex:i withObject:fifth];
  68                     goto save;
  69                 }
  70             }
  71         }
  72
  73         [iconLists addObject:[NSDictionary dictionaryWithObjectsAndKeys:
  74             [NSArray arrayWithObjects:[NSArray arrayWithObject:fifth], nil], @"iconMatrix",
  75         nil]];
  76     }
  77
  78   save:
  79     [buttonBarRow removeLastObject];
  80     bool saved([settings writeToFile:path atomically:YES]);
  81
  82     [pool release];
  83
  84     return saved ? 0 : 1;
  85 }