diff options
Diffstat (limited to 'third_party/heimdal/kpasswd/kpasswd.c')
| -rw-r--r-- | third_party/heimdal/kpasswd/kpasswd.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/third_party/heimdal/kpasswd/kpasswd.c b/third_party/heimdal/kpasswd/kpasswd.c new file mode 100644 index 0000000..af5012f --- /dev/null +++ b/third_party/heimdal/kpasswd/kpasswd.c @@ -0,0 +1,249 @@ +/* + * Copyright (c) 1997-2004 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 "kpasswd_locl.h" +RCSID("$Id$"); + +static int version_flag; +static int help_flag; +static char *admin_principal_str; +static char *cred_cache_str; + +static struct getargs args[] = { + { "admin-principal", 0, arg_string, &admin_principal_str, NULL, + NULL }, + { "cache", 'c', arg_string, &cred_cache_str, NULL, NULL }, + { "version", 0, arg_flag, &version_flag, NULL, NULL }, + { "help", 0, arg_flag, &help_flag, NULL, NULL } +}; + +static void +usage (int ret, struct getargs *a, int num_args) +{ + arg_printusage (a, num_args, NULL, "[principal ...]"); + exit (ret); +} + +static int +change_password(krb5_context context, + krb5_principal principal, + krb5_ccache id) +{ + krb5_data result_code_string, result_string; + int result_code; + krb5_error_code ret; + char pwbuf[BUFSIZ]; + char *msg, *name; + int aret; + + krb5_data_zero (&result_code_string); + krb5_data_zero (&result_string); + + name = msg = NULL; + if (principal == NULL) + aret = asprintf(&msg, "New password: "); + else { + ret = krb5_unparse_name(context, principal, &name); + if (ret) + krb5_err(context, 1, ret, "krb5_unparse_name"); + + aret = asprintf(&msg, "New password for %s: ", name); + } + + if (aret == -1 || msg == NULL) + krb5_errx (context, 1, "out of memory"); + + ret = UI_UTIL_read_pw_string (pwbuf, sizeof(pwbuf), msg, + UI_UTIL_FLAG_VERIFY); + free(msg); + if (name) + free(name); + if (ret != 0) { + return 1; + } + + ret = krb5_set_password_using_ccache (context, id, pwbuf, + principal, + &result_code, + &result_code_string, + &result_string); + if (ret) { + krb5_warn (context, ret, "krb5_set_password_using_ccache"); + return 1; + } + + printf ("%s%s%.*s\n", krb5_passwd_result_to_string(context, result_code), + result_string.length > 0 ? " : " : "", + (int)result_string.length, + result_string.length > 0 ? (char *)result_string.data : ""); + + krb5_data_free (&result_code_string); + krb5_data_free (&result_string); + + return ret != 0; +} + + +int +main (int argc, char **argv) +{ + krb5_error_code ret; + krb5_context context; + krb5_principal principal; + krb5_get_init_creds_opt *opt; + krb5_ccache id = NULL; + int exit_value; + int optidx = 0; + + setprogname(argv[0]); + + if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx)) + usage(1, args, sizeof(args) / sizeof(args[0])); + if (help_flag) + usage(0, args, sizeof(args) / sizeof(args[0])); + if (version_flag) { + print_version(NULL); + return 0; + } + argc -= optidx; + argv += optidx; + + ret = krb5_init_context (&context); + if (ret) + errx (1, "krb5_init_context failed: %d", ret); + + ret = krb5_get_init_creds_opt_alloc (context, &opt); + if (ret) + krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc"); + + krb5_get_init_creds_opt_set_tkt_life (opt, 300); + krb5_get_init_creds_opt_set_forwardable (opt, FALSE); + krb5_get_init_creds_opt_set_proxiable (opt, FALSE); + + if (cred_cache_str) { + ret = krb5_cc_resolve(context, cred_cache_str, &id); + if (ret) + krb5_err (context, 1, ret, "krb5_cc_resolve"); + } else { + ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, &id); + if (ret) + krb5_err (context, 1, ret, "krb5_cc_new_unique"); + } + + if (cred_cache_str == NULL) { + krb5_principal admin_principal = NULL; + krb5_creds cred; + + if (admin_principal_str) { + ret = krb5_parse_name (context, admin_principal_str, + &admin_principal); + if (ret) + krb5_err (context, 1, ret, "krb5_parse_name"); + } else if (argc == 1) { + ret = krb5_parse_name (context, argv[0], &admin_principal); + if (ret) + krb5_err (context, 1, ret, "krb5_parse_name"); + } else { + ret = krb5_get_default_principal (context, &admin_principal); + if (ret) + krb5_err (context, 1, ret, "krb5_get_default_principal"); + } + + ret = krb5_get_init_creds_password (context, + &cred, + admin_principal, + NULL, + krb5_prompter_posix, + NULL, + 0, + "kadmin/changepw", + opt); + switch (ret) { + case 0: + break; + case KRB5_LIBOS_PWDINTR : + return 1; + case KRB5KRB_AP_ERR_BAD_INTEGRITY : + case KRB5KRB_AP_ERR_MODIFIED : + krb5_errx(context, 1, "Password incorrect"); + break; + default: + krb5_err(context, 1, ret, "krb5_get_init_creds"); + } + + krb5_get_init_creds_opt_free(context, opt); + + ret = krb5_cc_initialize(context, id, admin_principal); + krb5_free_principal(context, admin_principal); + if (ret) + krb5_err(context, 1, ret, "krb5_cc_initialize"); + + ret = krb5_cc_store_cred(context, id, &cred); + if (ret) + krb5_err(context, 1, ret, "krb5_cc_store_cred"); + + krb5_free_cred_contents (context, &cred); + } + + if (argc == 0) { + exit_value = change_password(context, NULL, id); + } else { + exit_value = 0; + + while (argc-- > 0) { + + ret = krb5_parse_name (context, argv[0], &principal); + if (ret) + krb5_err (context, 1, ret, "krb5_parse_name"); + + ret = change_password(context, principal, id); + if (ret) + exit_value = 1; + krb5_free_principal(context, principal); + argv++; + } + } + + if (cred_cache_str == NULL) { + ret = krb5_cc_destroy(context, id); + if (ret) + krb5_err (context, 1, ret, "krb5_cc_destroy"); + } else { + ret = krb5_cc_close(context, id); + if (ret) + krb5_err (context, 1, ret, "krb5_cc_close"); + } + + krb5_free_context (context); + return exit_value; +} |