2 * Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
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34 #include "ktutil_locl.h"
39 * keep track of the highest version for every principal.
43 krb5_principal principal;
50 get_entry (krb5_principal princ, struct e *head)
54 for (e = head; e != NULL; e = e->next)
55 if (krb5_principal_compare (context, princ, e->principal))
61 add_entry (krb5_principal princ, int vno, time_t timestamp, struct e **head)
66 e = get_entry (princ, *head);
68 if(e->max_vno < vno) {
70 e->timestamp = timestamp;
74 e = malloc (sizeof (*e));
76 krb5_errx (context, 1, "malloc: out of memory");
77 ret = krb5_copy_principal (context, princ, &e->principal);
79 krb5_err (context, 1, ret, "krb5_copy_principal");
81 e->timestamp = timestamp;
87 delete_list (struct e *head)
89 while (head != NULL) {
90 struct e *next = head->next;
91 krb5_free_principal (context, head->principal);
98 * Remove all entries that have newer versions and that are older
103 kt_purge(struct purge_options *opt, int argc, char **argv)
105 krb5_error_code ret = 0;
106 krb5_kt_cursor cursor;
108 krb5_keytab_entry entry;
110 struct e *head = NULL;
111 time_t judgement_day;
113 age = parse_time(opt->age_string, "s");
115 krb5_warnx(context, "unparasable time `%s'", opt->age_string);
119 if((keytab = ktutil_open_keytab()) == NULL)
122 ret = krb5_kt_start_seq_get(context, keytab, &cursor);
124 krb5_warn(context, ret, "%s", keytab_string);
128 while(krb5_kt_next_entry(context, keytab, &entry, &cursor) == 0) {
129 add_entry (entry.principal, entry.vno, entry.timestamp, &head);
130 krb5_kt_free_entry(context, &entry);
132 krb5_kt_end_seq_get(context, keytab, &cursor);
134 judgement_day = time (NULL);
136 ret = krb5_kt_start_seq_get(context, keytab, &cursor);
138 krb5_warn(context, ret, "%s", keytab_string);
142 while(krb5_kt_next_entry(context, keytab, &entry, &cursor) == 0) {
143 struct e *e = get_entry (entry.principal, head);
146 krb5_warnx (context, "ignoring extra entry");
150 if (entry.vno < e->max_vno
151 && judgement_day - e->timestamp > age) {
155 krb5_unparse_name (context, entry.principal, &name_str);
156 printf ("removing %s vno %d\n", name_str, entry.vno);
159 ret = krb5_kt_remove_entry (context, keytab, &entry);
161 krb5_warn (context, ret, "remove");
163 krb5_kt_free_entry(context, &entry);
165 ret = krb5_kt_end_seq_get(context, keytab, &cursor);
170 krb5_kt_close (context, keytab);