kadmin/del.c

   1 /*
   2  * Copyright (c) 1997 - 2004 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "kadmin_locl.h"
  35 #include "kadmin-commands.h"
  36
  37 static int
  38 do_del_entry(krb5_principal principal, void *data)
  39 {
  40     return kadm5_delete_principal(data, principal);
  41 }
  42
  43 int
  44 del_entry(void *opt, int argc, char **argv)
  45 {
  46     int i;
  47     krb5_error_code ret = 0;
  48     void *dup_kadm_handle = NULL;
  49
  50     ret = kadm5_dup_context(kadm_handle, &dup_kadm_handle);
  51
  52     for (i = 0; ret == 0 && i < argc; i++)
  53         ret = foreach_principal(argv[i], do_del_entry, "del", NULL);
  54
  55     if (dup_kadm_handle)
  56         kadm5_destroy(dup_kadm_handle);
  57     return ret != 0;
  58 }
  59
  60 static int
  61 do_del_ns_entry(krb5_principal nsp, void *data)
  62 {
  63     krb5_error_code ret;
  64     krb5_principal p = NULL;
  65     const char *comp0 = krb5_principal_get_comp_string(context, nsp, 0);
  66     const char *comp1 = krb5_principal_get_comp_string(context, nsp, 1);
  67
  68     if (krb5_principal_get_num_comp(context, nsp) != 2) {
  69         char *unsp = NULL;
  70
  71         ret = krb5_unparse_name(context, nsp, &unsp);
  72         krb5_warn(context, ret,
  73                   "Not a valid namespace name (component count is not 2): %s",
  74                   unsp ? unsp : "<out of memory>");
  75         free(unsp);
  76         return EINVAL;
  77     }
  78
  79     ret = krb5_make_principal(context, &p,
  80                               krb5_principal_get_realm(context, nsp),
  81                               "WELLKNOWN", HDB_WK_NAMESPACE, NULL);
  82     if (ret == 0)
  83         ret = krb5_principal_set_comp_string(context, p, 2, comp0);
  84     if (ret == 0)
  85         ret = krb5_principal_set_comp_string(context, p, 3, comp1);
  86     if (ret == 0)
  87         ret = kadm5_delete_principal(kadm_handle, p);
  88     krb5_free_principal(context, p);
  89     return ret;
  90 }
  91
  92 int
  93 del_namespace(void *opt, int argc, char **argv)
  94 {
  95     int i;
  96     krb5_error_code ret = 0;
  97     void *dup_kadm_handle = NULL;
  98
  99     ret = kadm5_dup_context(kadm_handle, &dup_kadm_handle);
 100     for (i = 0; ret == 0 && i < argc; i++)
 101         ret = foreach_principal(argv[i], do_del_ns_entry, "del_ns", NULL);
 102     if (dup_kadm_handle)
 103         kadm5_destroy(dup_kadm_handle);
 104     return ret != 0;
 105 }
 106
 107 int
 108 del_alias(void *opt, int argc, char **argv)
 109 {
 110     krb5_error_code ret;
 111     size_t i;
 112
 113
 114     if (argc < 1) {
 115         krb5_warnx(context, "No aliases given");
 116         return 1;
 117     }
 118
 119     for (; argc; argc--, argv++) {
 120         kadm5_principal_ent_rec princ;
 121         krb5_principal p;
 122         HDB_Ext_Aliases *a;
 123         HDB_extension ext;
 124         krb5_tl_data *tl;
 125         krb5_data d;
 126
 127         if ((ret = krb5_parse_name(context, argv[0], &p))) {
 128             krb5_warn(context, ret, "Invalid principal: %s", argv[0]);
 129             return 1;
 130         }
 131
 132         memset(&princ, 0, sizeof(princ));
 133         ret = kadm5_get_principal(kadm_handle, p, &princ,
 134                                   KADM5_PRINCIPAL_NORMAL_MASK | KADM5_TL_DATA);
 135         if (ret) {
 136             krb5_warn(context, ret, "Principal alias not found %s", argv[0]);
 137             continue;
 138         }
 139
 140         if (krb5_principal_compare(context, p, princ.principal)) {
 141             krb5_warn(context, ret, "Not deleting principal %s because it is "
 142                       "not an alias; use 'delete' to delete the principal",
 143                       argv[0]);
 144             continue;
 145         }
 146
 147         a = &ext.data.u.aliases;
 148         a->case_insensitive = 0;
 149         a->aliases.len = 0;
 150         a->aliases.val = 0;
 151         if ((tl = get_tl(&princ, KRB5_TL_ALIASES)) == NULL) {
 152             krb5_warnx(context, "kadm5_get_principal() found principal %s but "
 153                        "not its aliases", argv[0]);
 154             kadm5_free_principal_ent(kadm_handle, &princ);
 155             krb5_free_principal(context, p);
 156             return 1;
 157         }
 158
 159         ret = decode_HDB_Ext_Aliases(tl->tl_data_contents, tl->tl_data_length,
 160                                      a, NULL);
 161         if (ret) {
 162             krb5_warn(context, ret, "Principal alias list could not be decoded");
 163             kadm5_free_principal_ent(kadm_handle, &princ);
 164             krb5_free_principal(context, p);
 165             return 1;
 166         }
 167
 168         /*
 169          * Remove alias, but also, don't assume it appears only once in aliases
 170          * list.
 171          */
 172         i = 0;
 173         while (i < a->aliases.len) {
 174             if (!krb5_principal_compare(context, p, &a->aliases.val[i])) {
 175                 i++;
 176                 continue;
 177             }
 178             free_Principal(&a->aliases.val[i]);
 179             if (i + 1 < a->aliases.len)
 180                 memmove(&a->aliases.val[i],
 181                         &a->aliases.val[i + 1],
 182                         sizeof(a->aliases.val[i]) * (a->aliases.len - (i + 1)));
 183             if (a->aliases.len)
 184                 a->aliases.len--;
 185             continue;
 186         }
 187
 188         krb5_data_zero(&d);
 189         ext.data.element = choice_HDB_extension_data_aliases;
 190         ext.mandatory = 0;
 191         if (ret == 0)
 192             ASN1_MALLOC_ENCODE(HDB_extension, d.data, d.length, &ext, &i, ret);
 193         free_HDB_Ext_Aliases(a);
 194         if (ret == 0) {
 195             int16_t len = d.length;
 196
 197             if (len < 0 || d.length != (size_t)len) {
 198                 krb5_warnx(context, "Too many aliases; does not fit in 32767 bytes");
 199                 ret = EOVERFLOW;
 200             } else  {
 201                 add_tl(&princ, KRB5_TL_EXTENSION, &d);
 202                 krb5_data_zero(&d);
 203             }
 204         }
 205         if (ret == 0) {
 206             ret = kadm5_modify_principal(kadm_handle, &princ,
 207                                          KADM5_PRINCIPAL | KADM5_TL_DATA);
 208             if (ret)
 209                 krb5_warn(context, ret, "kadm5_modify_principal");
 210         }
 211
 212         kadm5_free_principal_ent(kadm_handle, &princ);
 213         krb5_free_principal(context, p);
 214         krb5_data_free(&d);
 215         p = NULL;
 216     }
 217
 218     return ret == 0 ? 0 : 1;
 219 }