diff options
Diffstat (limited to 'crypto/kerberosIV/kadmin/new_pwd.c')
| -rw-r--r-- | crypto/kerberosIV/kadmin/new_pwd.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/crypto/kerberosIV/kadmin/new_pwd.c b/crypto/kerberosIV/kadmin/new_pwd.c new file mode 100644 index 0000000..88fb7a9 --- /dev/null +++ b/crypto/kerberosIV/kadmin/new_pwd.c @@ -0,0 +1,146 @@ +/* + * Copyright (c) 1995, 1996, 1997 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. 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 "kadm_locl.h" + +RCSID("$Id: new_pwd.c,v 1.11 1997/05/02 14:28:54 assar Exp $"); + +#ifdef NOENCRYPTION +#define read_long_pw_string placebo_read_pw_string +#else +#define read_long_pw_string des_read_pw_string +#endif + +static char * +check_pw (char *pword) +{ + if (strlen(pword) == 0) + return "Null passwords are not allowed - Please enter a longer password."; + + if (strlen(pword) < MIN_KPW_LEN) + return "Password is to short - Please enter a longer password."; + + /* Don't allow all lower case passwords regardless of length */ + { + char *t; + for (t = pword; *t && islower(*t); t++) + ; + if (*t == 0) + return "Please don't use an all-lower case password.\n" + "\tUnusual capitalization, delimiter characters or " + "digits are suggested."; + } + + return NULL; +} + +int +get_pw_new_pwd(char *pword, int pwlen, krb_principal *pr, int print_realm) +{ + char ppromp[40+ANAME_SZ+INST_SZ+REALM_SZ]; /* for the password prompt */ + char npromp[40+ANAME_SZ+INST_SZ+REALM_SZ]; /* for the password prompt */ + + char p[MAX_K_NAME_SZ]; + + char local_realm[REALM_SZ]; + int status; + char *expl; + + /* + * We don't care about failure; this is to determine whether or + * not to print the realm in the prompt for a new password. + */ + krb_get_lrealm(local_realm, 1); + + if (strcmp(local_realm, pr->realm)) + print_realm++; + + { + char *q; + krb_unparse_name_r(pr, p); + if(print_realm == 0 && (q = strrchr(p, '@'))) + *q = 0; + } + + snprintf(ppromp, sizeof(ppromp), "Old password for %s:", p); + if (read_long_pw_string(pword, pwlen-1, ppromp, 0)) { + fprintf(stderr, "Error reading old password.\n"); + return -1; + } + + status = krb_get_pw_in_tkt(pr->name, pr->instance, pr->realm, + PWSERV_NAME, KADM_SINST, 1, pword); + if (status != KSUCCESS) { + if (status == INTK_BADPW) { + printf("Incorrect old password.\n"); + return -1; + } + else { + fprintf(stderr, "Kerberos error: %s\n", krb_get_err_text(status)); + return -1; + } + } + memset(pword, 0, pwlen); + + do { + char verify[MAX_KPW_LEN]; + snprintf(npromp, sizeof(npromp), "New Password for %s:",p); + if (read_long_pw_string(pword, pwlen-1, npromp, 0)) { + fprintf(stderr, + "Error reading new password, password unchanged.\n"); + return -1; + } + expl = check_pw (pword); + if (expl) { + printf("\n\t%s\n\n", expl); + continue; + } + /* Now we got an ok password, verify it. */ + snprintf(npromp, sizeof(npromp), "Verifying New Password for %s:", p); + if (read_long_pw_string(verify, MAX_KPW_LEN-1, npromp, 0)) { + fprintf(stderr, + "Error reading new password, password unchanged.\n"); + return -1; + } + if (strcmp(pword, verify) != 0) { + printf("Verify failure - try again\n"); + expl = ""; /* continue */ + } + } while (expl); + return 0; +} |
