kuser/kdeltkt.c

   1
   2 #include "kuser_locl.h"
   3
   4 static char *etypestr = 0;
   5 static char *ccachestr = 0;
   6 static char *flagstr = 0;
   7 static int   quiet_flag = 0;
   8 static int   help_flag = 0;
   9 static int   version_flag = 0;
  10
  11 struct getargs args[] = {
  12     { "cache",  'c', arg_string, &ccachestr,
  13       "Credentials cache", "cachename" },
  14     { "enctype", 'e', arg_string, &etypestr,
  15       "Encryption type", "enctype" },
  16     { "flags", 'f', arg_string, &flagstr,
  17       "Flags", "flags" },
  18     { "quiet", 'q', arg_flag, &quiet_flag, "Quiet" },
  19     { "version",        0, arg_flag, &version_flag },
  20     { "help",           0, arg_flag, &help_flag }
  21 };
  22
  23 static void
  24 usage(int ret)
  25 {
  26     arg_printusage(args, sizeof(args)/sizeof(args[0]),
  27                    "Usage: ", "service1 [service2 ...]");
  28     exit(ret);
  29 }
  30
  31 static void do_kdeltkt (int argc, char *argv[], char *ccachestr, char *etypestr, int flags);
  32
  33 int main(int argc, char *argv[])
  34 {
  35     int optidx = 0;
  36     int flags = 0;
  37
  38     setprogname(argv[0]);
  39
  40     if (getarg(args, sizeof(args)/sizeof(args[0]), argc, argv, &optidx))
  41         usage (1);
  42
  43     if (help_flag)
  44         usage(0);
  45
  46     if (version_flag) {
  47         print_version(NULL);
  48         exit(0);
  49     }
  50
  51     argc -= optidx;
  52     argv += optidx;
  53
  54     if (argc < 1)
  55         usage (1);
  56
  57     if (flagstr)
  58         flags = atoi(flagstr);
  59
  60     do_kdeltkt(argc, argv, ccachestr, etypestr, flags);
  61
  62     return 0;
  63 }
  64
  65 static void do_kdeltkt (int count, char *names[],
  66                         char *ccachestr, char *etypestr, int flags)
  67 {
  68     krb5_context context;
  69     krb5_error_code ret;
  70     int i, errors;
  71     krb5_enctype etype;
  72     krb5_ccache ccache;
  73     krb5_principal me;
  74     krb5_creds in_creds, out_creds;
  75     int retflags;
  76     char *princ;
  77
  78     ret = krb5_init_context(&context);
  79     if (ret)
  80         errx(1, "krb5_init_context failed: %d", ret);
  81
  82     if (etypestr) {
  83         ret = krb5_string_to_enctype(context, etypestr, &etype);
  84         if (ret)
  85             krb5_err(context, 1, ret, "Can't convert enctype %s", etypestr);
  86         retflags = KRB5_TC_MATCH_SRV_NAMEONLY | KRB5_TC_MATCH_KEYTYPE;
  87     } else {
  88         etype = 0;
  89         retflags = KRB5_TC_MATCH_SRV_NAMEONLY;
  90     }
  91
  92     if (ccachestr)
  93         ret = krb5_cc_resolve(context, ccachestr, &ccache);
  94     else
  95         ret = krb5_cc_default(context, &ccache);
  96     if (ret)
  97         krb5_err(context, 1, ret, "Can't open credentials cache");
  98
  99     ret = krb5_cc_get_principal(context, ccache, &me);
 100     if (ret)
 101         krb5_err(context, 1, ret, "Can't get client principal");
 102
 103     errors = 0;
 104
 105     for (i = 0; i < count; i++) {
 106         memset(&in_creds, 0, sizeof(in_creds));
 107
 108         in_creds.client = me;
 109
 110         ret = krb5_parse_name(context, names[i], &in_creds.server);
 111         if (ret) {
 112             if (!quiet_flag)
 113                 krb5_warn(context, ret, "Can't parse principal name %s", names[i]);
 114             errors++;
 115             continue;
 116         }
 117
 118         ret = krb5_unparse_name(context, in_creds.server, &princ);
 119         if (ret) {
 120             krb5_warn(context, ret, "Can't unparse principal name %s", names[i]);
 121             errors++;
 122             continue;
 123         }
 124
 125         in_creds.session.keytype = etype;
 126
 127         ret = krb5_cc_retrieve_cred(context, ccache, retflags,
 128                                     &in_creds, &out_creds);
 129         if (ret) {
 130             krb5_warn(context, ret, "Can't retrieve credentials for %s", princ);
 131
 132             krb5_free_unparsed_name(context, princ);
 133
 134             errors++;
 135             continue;
 136         }
 137
 138         ret = krb5_cc_remove_cred(context, ccache, flags, &out_creds);
 139
 140         krb5_free_principal(context, in_creds.server);
 141
 142         if (ret) {
 143             krb5_warn(context, ret, "Can't remove credentials for %s", princ);
 144
 145             krb5_free_cred_contents(context, &out_creds);
 146             krb5_free_unparsed_name(context, princ);
 147
 148             errors++;
 149             continue;
 150         }
 151
 152         krb5_free_unparsed_name(context, princ);
 153         krb5_free_cred_contents(context, &out_creds);
 154     }
 155
 156     krb5_free_principal(context, me);
 157     krb5_cc_close(context, ccache);
 158     krb5_free_context(context);
 159
 160     if (errors)
 161         exit(1);
 162
 163     exit(0);
 164 }