/* * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * Copyright 1993 OpenVision Technologies, Inc., All Rights Reserved. * * $Id: keytab.c,v 1.26 2000/02/19 01:57:07 tlyu Exp $ * $Source: /cvs/krbdev/krb5/src/kadmin/cli/keytab.c,v $ */ /* * Copyright (C) 1998 by the FundsXpress, INC. * * All rights reserved. * * Export of this software from the United States of America may require * a specific license from the United States Government. It is the * responsibility of any person or organization contemplating export to * obtain such a license before exporting. * * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and * distribute this software and its documentation for any purpose and * without fee is hereby granted, provided that the above copyright * notice appear in all copies and that both that copyright notice and * this permission notice appear in supporting documentation, and that * the name of FundsXpress. not be used in advertising or publicity pertaining * to distribution of the software without specific, written prior * permission. FundsXpress makes no representations about the suitability of * this software for any purpose. It is provided "as is" without express * or implied warranty. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #if !defined(lint) && !defined(__CODECENTER__) static char *rcsid = "$Header: /cvs/krbdev/krb5/src/kadmin/cli/keytab.c,v 1.26 2000/02/19 01:57:07 tlyu Exp $"; #endif #include #include #include #include #include #include #include static int add_principal(void *handle, char *keytab_str, krb5_keytab keytab, int keepold, int n_ks_tuple, krb5_key_salt_tuple *ks_tuple, char *princ_str); static int remove_principal(char *keytab_str, krb5_keytab keytab, char *princ_str, char *kvno_str); static char *etype_string(krb5_enctype enctype); extern char *krb5_defkeyname; extern char *whoami; extern krb5_context context; extern void *handle; static int quiet; void add_usage() { fprintf(stderr, "%s: %s\n", gettext("Usage"), "ktadd [-k[eytab] keytab] [-q] [-e keysaltlist] " "[principal | -glob princ-exp] [...]\n"); } void rem_usage() { fprintf(stderr, "%s: %s\n", gettext("Usage"), "ktremove [-k[eytab] keytab] [-q] principal " "[kvno|\"all\"|\"old\"]\n"); } int process_keytab(krb5_context context, char **keytab_str, krb5_keytab *keytab) { int code; char buf[BUFSIZ]; if (*keytab_str == NULL) { if (code = krb5_kt_default(context, keytab)) { com_err(whoami, code, gettext("while opening default keytab")); return (1); } if (code = krb5_kt_get_name(context, *keytab, buf, BUFSIZ)) { com_err(whoami, code, gettext("while retrieving keytab name")); return (1); } if (!(*keytab_str = strdup(buf))) { com_err(whoami, ENOMEM, gettext("while creating keytab name")); return(1); } } else { if (strchr(*keytab_str, ':') != NULL) { *keytab_str = strdup(*keytab_str); if (*keytab_str == NULL) { com_err(whoami, ENOMEM, gettext("while creating keytab name")); return (1); } } else { char *tmp = *keytab_str; *keytab_str = (char *) malloc(strlen("WRFILE:")+strlen(tmp)+1); if (*keytab_str == NULL) { com_err(whoami, ENOMEM, gettext("while creating keytab name")); return (1); } sprintf(*keytab_str, "WRFILE:%s", tmp); } code = krb5_kt_resolve(context, *keytab_str, keytab); if (code != 0) { com_err(whoami, code, gettext("while resolving keytab %s"), *keytab_str); free(keytab_str); return (1); } } return (0); } void kadmin_keytab_add(int argc, char **argv) { krb5_keytab keytab = 0; char *princ_str, *keytab_str = NULL, **princs; int code, num, i; krb5_error_code retval; int keepold = 0, n_ks_tuple = 0; krb5_key_salt_tuple *ks_tuple = NULL; argc--; argv++; quiet = 0; while (argc) { if (strncmp(*argv, "-k", 2) == 0) { argc--; argv++; if (!argc || keytab_str) { add_usage(); return; } keytab_str = *argv; } else if (strcmp(*argv, "-q") == 0) { quiet++; } else if (strcmp(*argv, "-e") == 0) { argc--; if (argc < 1) { add_usage(); return; } retval = krb5_string_to_keysalts(*++argv, ", \t", ":.-", 0, &ks_tuple, &n_ks_tuple); if (retval) { com_err("ktadd", retval, gettext("while parsing keysalts %s"), *argv); return; } } else break; argc--; argv++; } if (argc == 0) { add_usage(); return; } if (process_keytab(context, &keytab_str, &keytab)) return; while (*argv) { if (strcmp(*argv, "-glob") == 0) { if (*++argv == NULL) { add_usage(); break; } if (code = kadm5_get_principals(handle, *argv, &princs, &num)) { com_err(whoami, code, gettext("while expanding expression " "\"%s\"."), *argv); argv++; continue; } for (i = 0; i < num; i++) (void) add_principal(handle, keytab_str, keytab, keepold, n_ks_tuple, ks_tuple, princs[i]); kadm5_free_name_list(handle, princs, num); } else (void) add_principal(handle, keytab_str, keytab, keepold, n_ks_tuple, ks_tuple, *argv); argv++; } code = krb5_kt_close(context, keytab); if (code != 0) com_err(whoami, code, gettext("while closing keytab")); free(keytab_str); } void kadmin_keytab_remove(int argc, char **argv) { krb5_keytab keytab = 0; char *princ_str, *keytab_str = NULL; int code; argc--; argv++; quiet = 0; while (argc) { if (strncmp(*argv, "-k", 2) == 0) { argc--; argv++; if (!argc || keytab_str) { rem_usage(); return; } keytab_str = *argv; } else if (strcmp(*argv, "-q") == 0) { quiet++; } else break; argc--; argv++; } if (argc != 1 && argc != 2) { rem_usage(); return; } if (process_keytab(context, &keytab_str, &keytab)) return; (void) remove_principal(keytab_str, keytab, argv[0], argv[1]); code = krb5_kt_close(context, keytab); if (code != 0) com_err(whoami, code, gettext("while closing keytab")); free(keytab_str); } int add_principal(void *handle, char *keytab_str, krb5_keytab keytab, int keepold, int n_ks_tuple, krb5_key_salt_tuple *ks_tuple, char *princ_str) { kadm5_principal_ent_rec princ_rec; krb5_principal princ; krb5_keytab_entry new_entry; krb5_keyblock *keys; int code, code2, mask, nkeys, i; int nktypes = 0; krb5_key_salt_tuple *permitted_etypes = NULL; (void) memset((char *)&princ_rec, 0, sizeof(princ_rec)); princ = NULL; keys = NULL; nkeys = 0; code = krb5_parse_name(context, princ_str, &princ); if (code != 0) { com_err(whoami, code, gettext("while parsing -add principal name %s"), princ_str); goto cleanup; } if (ks_tuple == NULL) { krb5_enctype *ptr, *ktypes = NULL; code = krb5_get_permitted_enctypes(context, &ktypes); if (!code && ktypes && *ktypes) { krb5_int32 salttype; /* * Count the results. This is stupid, the API above * should have included an output param to indicate * the size of the list that is returned. */ for (ptr = ktypes; *ptr; ptr++) nktypes++; /* Allocate a new key-salt tuple set */ permitted_etypes = (krb5_key_salt_tuple *)malloc ( sizeof (krb5_key_salt_tuple) * nktypes); if (permitted_etypes == NULL) { free(ktypes); return (ENOMEM); } /* * Because the keysalt parameter doesn't matter for * keys stored in the keytab, use the default "normal" * salt for all keys */ (void) krb5_string_to_salttype("normal", &salttype); for (i = 0; i < nktypes; i++) { permitted_etypes[i].ks_enctype = ktypes[i]; permitted_etypes[i].ks_salttype = salttype; } free(ktypes); } else { if (ktypes) free(ktypes); goto cleanup; } } else { permitted_etypes = ks_tuple; nktypes = n_ks_tuple; } code = kadm5_randkey_principal_3(handle, princ, keepold, nktypes, permitted_etypes, &keys, &nkeys); #ifndef _KADMIN_LOCAL_ /* this block is not needed in the kadmin.local client */ /* * If the above call failed, we may be talking to an older * admin server, so try the older API. */ if (code == KADM5_RPC_ERROR) { code = kadm5_randkey_principal_old(handle, princ, &keys, &nkeys); } #endif /* !KADMIN_LOCAL */ if (code != 0) { if (code == KADM5_UNK_PRINC) { fprintf(stderr, gettext("%s: Principal %s does not exist.\n"), whoami, princ_str); } else { com_err(whoami, code, gettext("while changing %s's key"), princ_str); } goto cleanup; } code = kadm5_get_principal(handle, princ, &princ_rec, KADM5_PRINCIPAL_NORMAL_MASK); if (code != 0) { com_err(whoami, code, gettext("while retrieving principal")); goto cleanup; } for (i = 0; i < nkeys; i++) { memset((char *) &new_entry, 0, sizeof(new_entry)); new_entry.principal = princ; new_entry.key = keys[i]; new_entry.vno = princ_rec.kvno; code = krb5_kt_add_entry(context, keytab, &new_entry); if (code != 0) { com_err(whoami, code, gettext("while adding key to keytab")); (void) kadm5_free_principal_ent(handle, &princ_rec); goto cleanup; } if (!quiet) printf(gettext("Entry for principal %s with kvno %d, " "encryption type %s added to keytab %s.\n"), princ_str, princ_rec.kvno, etype_string(keys[i].enctype), keytab_str); } code = kadm5_free_principal_ent(handle, &princ_rec); if (code != 0) { com_err(whoami, code, gettext("while freeing principal entry")); goto cleanup; } cleanup: if (nkeys) { for (i = 0; i < nkeys; i++) krb5_free_keyblock_contents(context, &keys[i]); free(keys); } if (princ) krb5_free_principal(context, princ); if (permitted_etypes != NULL && ks_tuple == NULL) free(permitted_etypes); return (code); } int remove_principal(char *keytab_str, krb5_keytab keytab, char *princ_str, char *kvno_str) { krb5_principal princ; krb5_keytab_entry entry; krb5_kt_cursor cursor; enum { UNDEF, SPEC, HIGH, ALL, OLD } mode; int code, kvno, did_something; code = krb5_parse_name(context, princ_str, &princ); if (code != 0) { com_err(whoami, code, gettext("while parsing principal name %s"), princ_str); return (code); } mode = UNDEF; if (kvno_str == NULL) { mode = HIGH; kvno = 0; } else if (strcmp(kvno_str, "all") == 0) { mode = ALL; kvno = 0; } else if (strcmp(kvno_str, "old") == 0) { mode = OLD; kvno = 0; } else { mode = SPEC; kvno = atoi(kvno_str); } /* kvno is set to specified value for SPEC, 0 otherwise */ code = krb5_kt_get_entry(context, keytab, princ, kvno, 0, &entry); if (code != 0) { if (code == ENOENT) { fprintf(stderr, gettext("%s: Keytab %s does not exist.\n"), whoami, keytab_str); } else if (code == KRB5_KT_NOTFOUND) { if (mode != SPEC) fprintf(stderr, gettext("%s: No entry for principal " "%s exists in keytab %s\n"), whoami, princ_str, keytab_str); else fprintf(stderr, gettext("%s: No entry for principal " "%s with kvno %d exists in " "keytab %s.\n"), whoami, princ_str, kvno, keytab_str); } else { com_err(whoami, code, gettext("while retrieving highest " "kvno from keytab")); } return (code); } /* set kvno to spec'ed value for SPEC, highest kvno otherwise */ kvno = entry.vno; krb5_kt_free_entry(context, &entry); code = krb5_kt_start_seq_get(context, keytab, &cursor); if (code != 0) { com_err(whoami, code, gettext("while starting keytab scan")); return (code); } did_something = 0; while ((code = krb5_kt_next_entry(context, keytab, &entry, &cursor)) == 0) { if (krb5_principal_compare(context, princ, entry.principal) && ((mode == ALL) || (mode == SPEC && entry.vno == kvno) || (mode == OLD && entry.vno != kvno) || (mode == HIGH && entry.vno == kvno))) { /* * Ack! What a kludge... the scanning functions * lock the keytab so entries cannot be removed * while they are operating. */ code = krb5_kt_end_seq_get(context, keytab, &cursor); if (code != 0) { com_err(whoami, code, gettext("while temporarily " "ending keytab scan")); return (code); } code = krb5_kt_remove_entry(context, keytab, &entry); if (code != 0) { com_err(whoami, code, gettext("while deleting entry " "from keytab")); return (code); } code = krb5_kt_start_seq_get(context, keytab, &cursor); if (code != 0) { com_err(whoami, code, gettext("while restarting keytab scan")); return (code); } did_something++; if (!quiet) printf(gettext("Entry for principal " "%s with kvno %d " "removed from keytab %s.\n"), princ_str, entry.vno, keytab_str); } krb5_kt_free_entry(context, &entry); } if (code && code != KRB5_KT_END) { com_err(whoami, code, gettext("while scanning keytab")); return (code); } if (code = krb5_kt_end_seq_get(context, keytab, &cursor)) { com_err(whoami, code, gettext("while ending keytab scan")); return (code); } /* * If !did_someting then mode must be OLD or we would have already * returned with an error. But check it anyway just to prevent * unexpected error messages... */ if (!did_something && mode == OLD) { fprintf(stderr, gettext("%s: There is only one entry for principal " "%s in keytab %s\n"), whoami, princ_str, keytab_str); return (1); } return (0); } /* * etype_string(enctype): return a string representation of the * encryption type. XXX copied from klist.c; this should be a * library function, or perhaps just #defines */ static char * etype_string(enctype) krb5_enctype enctype; { static char buf[100]; krb5_error_code ret; if (ret = krb5_enctype_to_string(enctype, buf, sizeof(buf))) sprintf(buf, "etype %d", enctype); return (buf); }