diff options
Diffstat (limited to 'third_party/heimdal/lib/krb5/get_default_principal.c')
-rw-r--r-- | third_party/heimdal/lib/krb5/get_default_principal.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/krb5/get_default_principal.c b/third_party/heimdal/lib/krb5/get_default_principal.c new file mode 100644 index 0000000..3548074 --- /dev/null +++ b/third_party/heimdal/lib/krb5/get_default_principal.c @@ -0,0 +1,95 @@ +/* + * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "krb5_locl.h" + +/* + * Try to find out what's a reasonable default principal. + */ + +KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL +_krb5_get_default_principal_local (krb5_context context, + krb5_principal *princ) +{ + const char *user = NULL; + const char *second_component = NULL; + char userbuf[128]; + + *princ = NULL; + + /* + * NOTE: We prefer getlogin_r() (via roken_get_loginname()) to using $USER, + * $LOGNAME, or getpwuid_r() (via roken_get_username()), in that + * order, otherwise we won't figure out to output + * <username>/root@DEFAULT_REALM. + */ +#ifndef WIN32 + if (geteuid() == 0) + user = roken_get_loginname(userbuf, sizeof(userbuf)); +#endif + if (user == NULL) + user = roken_get_username(userbuf, sizeof(userbuf)); + if (user == NULL) { + krb5_set_error_message(context, ENOTTY, + N_("unable to figure out current principal", + "")); + return ENOTTY; /* XXX */ + } + +#ifndef WIN32 + if (!issuid() && getuid() == 0 && strcmp(user, "root") != 0) + second_component = "root"; /* We'll use <user>/root */ +#endif + return krb5_make_principal(context, princ, NULL, user, + second_component, NULL); +} + +KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL +krb5_get_default_principal (krb5_context context, + krb5_principal *princ) +{ + krb5_error_code ret; + krb5_ccache id; + + *princ = NULL; + + ret = krb5_cc_default (context, &id); + if (ret == 0) { + ret = krb5_cc_get_principal (context, id, princ); + krb5_cc_close (context, id); + if (ret == 0) + return 0; + } + + return _krb5_get_default_principal_local(context, princ); +} |