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- /*
- * $Source: /usr/src/kerberosIV/kdb_edit/RCS/kdb_edit.c,v $
- * $Author: raeburn $
- *
- * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute
- * of Technology.
- *
- * For copying and distribution information, please see the file
- * <mit-copyright.h>.
- *
- * This routine changes the Kerberos encryption keys for principals,
- * i.e., users or services.
- */
-
- /*
- * exit returns 0 ==> success -1 ==> error
- */
-
- #ifndef lint
- static char rcsid_kdb_edit_c[] =
- "$Id: kdb_edit.c,v 4.2 90/01/09 16:05:09 raeburn Exp Locker: karels $";
- #endif lint
-
- #include <mit-copyright.h>
-
- #include <stdio.h>
- #include <signal.h>
- #include <errno.h>
- #include <strings.h>
- #include <sys/ioctl.h>
- #include <sys/file.h>
- #include "time.h"
- #include <des.h>
- #include <krb.h>
- #include <krb_db.h>
- /* MKEYFILE is now defined in kdc.h */
- #include <kdc.h>
-
- extern char *errmsg();
- extern int errno;
- extern char *strcpy();
-
- void sig_exit();
-
- #define zaptime(foo) bzero((char *)(foo), sizeof(*(foo)))
-
- char prog[32];
- char *progname = prog;
- int nflag = 0;
- int cflag;
- int lflag;
- int uflag;
- int debug;
- extern kerb_debug;
- extern char *sys_errlist[];
-
- Key_schedule KS;
- C_Block new_key;
- unsigned char *input;
-
- unsigned char *ivec;
- int i, j;
- int more;
-
- char *in_ptr;
- char input_name[ANAME_SZ];
- char input_instance[INST_SZ];
- char input_string[ANAME_SZ];
-
- #define MAX_PRINCIPAL 10
- Principal principal_data[MAX_PRINCIPAL];
-
- static Principal old_principal;
- static Principal default_princ;
-
- static C_Block master_key;
- static C_Block session_key;
- static Key_schedule master_key_schedule;
- static char pw_str[255];
- static long master_key_version;
-
- #define gets(buf) _gets(buf, sizeof(buf)) /* hack */
-
- char *
- _gets(p, n)
- char *p;
- int n;
- {
- char *rv, *fgets();
-
- if ((rv = fgets(p, n, stdin)) == NULL)
- return (rv);
- if (p = index(p, '\n'))
- *p = '\0';
- return (rv);
- }
-
- main(argc, argv)
- int argc;
- char *argv[];
-
- {
- /* Local Declarations */
-
- long n;
-
- prog[sizeof prog - 1] = '\0'; /* make sure terminated */
- strncpy(prog, argv[0], sizeof prog - 1); /* salt away invoking
- * program */
-
- /* Assume a long is four bytes */
- if (sizeof(long) != 4) {
- fprintf(stdout, "%s: size of long is %d.\n", sizeof(long), prog);
- exit(-1);
- }
- /* Assume <=32 signals */
- if (NSIG > 32) {
- fprintf(stderr, "%s: more than 32 signals defined.\n", prog);
- exit(-1);
- }
- while (--argc > 0 && (*++argv)[0] == '-')
- for (i = 1; argv[0][i] != '\0'; i++) {
- switch (argv[0][i]) {
-
- /* debug flag */
- case 'd':
- debug = 1;
- continue;
-
- /* debug flag */
- case 'l':
- kerb_debug |= 1;
- continue;
-
- case 'n': /* read MKEYFILE for master key */
- nflag = 1;
- continue;
-
- default:
- fprintf(stderr, "%s: illegal flag \"%c\"\n",
- progname, argv[0][i]);
- Usage(); /* Give message and die */
- }
- };
-
- fprintf(stdout, "Opening database...\n");
- fflush(stdout);
- kerb_init();
- if (argc > 0) {
- if (kerb_db_set_name(*argv) != 0) {
- fprintf(stderr, "Could not open altername database name\n");
- exit(1);
- }
- }
-
- #ifdef notdef
- no_core_dumps(); /* diddle signals to avoid core dumps! */
-
- /* ignore whatever is reasonable */
- signal(SIGHUP, SIG_IGN);
- signal(SIGINT, SIG_IGN);
- signal(SIGTSTP, SIG_IGN);
-
- #endif
-
- if (kdb_get_master_key ((nflag == 0),
- master_key, master_key_schedule) != 0) {
- fprintf (stdout, "Couldn't read master key.\n");
- fflush (stdout);
- exit (-1);
- }
-
- if ((master_key_version = kdb_verify_master_key(master_key,
- master_key_schedule,
- stdout)) < 0)
- exit (-1);
-
- /* lookup the default values */
- n = kerb_get_principal(KERB_DEFAULT_NAME, KERB_DEFAULT_INST,
- &default_princ, 1, &more);
- if (n != 1) {
- fprintf(stderr,
- "%s: Kerberos error on default value lookup, %d found.\n",
- progname, n);
- exit(-1);
- }
- fprintf(stdout, "Previous or default values are in [brackets] ,\n");
- fprintf(stdout, "enter return to leave the same, or new value.\n");
-
- while (change_principal()) {
- }
-
- cleanup();
- }
-
- change_principal()
- {
- static char temp[255];
- int creating = 0;
- int editpw = 0;
- int changed = 0;
- long temp_long;
- int n;
- struct tm *tp, edate, *localtime();
- long maketime();
-
- fprintf(stdout, "\nPrincipal name: ");
- fflush(stdout);
- if (!gets(input_name) || *input_name == '\0')
- return 0;
- fprintf(stdout, "Instance: ");
- fflush(stdout);
- /* instance can be null */
- gets(input_instance);
- j = kerb_get_principal(input_name, input_instance, principal_data,
- MAX_PRINCIPAL, &more);
- if (!j) {
- fprintf(stdout, "%s.%s not found, Create [y] ? ", input_name,
- input_instance);
- gets(temp); /* Default case should work, it didn't */
- if (temp[0] != 'y' && temp[0] != 'Y' && temp[0] != '\0')
- return -1;
- /* make a new principal, fill in defaults */
- j = 1;
- creating = 1;
- strcpy(principal_data[0].name, input_name);
- strcpy(principal_data[0].instance, input_instance);
- principal_data[0].old = NULL;
- principal_data[0].exp_date = default_princ.exp_date;
- principal_data[0].max_life = default_princ.max_life;
- principal_data[0].attributes = default_princ.attributes;
- principal_data[0].kdc_key_ver = (unsigned char) master_key_version;
- principal_data[0].key_version = 0; /* bumped up later */
- }
- tp = localtime(&principal_data[0].exp_date);
- (void) sprintf(principal_data[0].exp_date_txt, "%4d-%02d-%02d",
- tp->tm_year > 1900 ? tp->tm_year : tp->tm_year + 1900,
- tp->tm_mon + 1, tp->tm_mday); /* January is 0, not 1 */
- for (i = 0; i < j; i++) {
- for (;;) {
- fprintf(stdout,
- "Principal: %s, Instance: %s, kdc_key_ver: %d\n",
- principal_data[i].name, principal_data[i].instance,
- principal_data[i].kdc_key_ver);
- editpw = 1;
- changed = 0;
- if (!creating) {
- /*
- * copy the existing data so we can use the old values
- * for the qualifier clause of the replace
- */
- principal_data[i].old = (char *) &old_principal;
- bcopy(&principal_data[i], &old_principal,
- sizeof(old_principal));
- printf("Change password [n] ? ");
- gets(temp);
- if (strcmp("y", temp) && strcmp("Y", temp))
- editpw = 0;
- }
- /* password */
- if (editpw) {
- #ifdef NOENCRYPTION
- placebo_read_pw_string(pw_str, sizeof pw_str,
- "New Password: ", TRUE);
- #else
- des_read_pw_string(pw_str, sizeof pw_str,
- "New Password: ", TRUE);
- #endif
- if (pw_str[0] == '\0' || !strcmp(pw_str, "RANDOM")) {
- printf("Random password [y] ? ");
- gets(temp);
- if (!strcmp("n", temp) || !strcmp("N", temp)) {
- /* no, use literal */
- #ifdef NOENCRYPTION
- bzero(new_key, sizeof(C_Block));
- new_key[0] = 127;
- #else
- string_to_key(pw_str, new_key);
- #endif
- bzero(pw_str, sizeof pw_str); /* "RANDOM" */
- } else {
- #ifdef NOENCRYPTION
- bzero(new_key, sizeof(C_Block));
- new_key[0] = 127;
- #else
- random_key(new_key); /* yes, random */
- #endif
- bzero(pw_str, sizeof pw_str);
- }
- } else if (!strcmp(pw_str, "NULL")) {
- printf("\nNull Key [y] ? ");
- gets(temp);
- if (!strcmp("n", temp) || !strcmp("N", temp)) {
- /* no, use literal */
- #ifdef NOENCRYPTION
- bzero(new_key, sizeof(C_Block));
- new_key[0] = 127;
- #else
- string_to_key(pw_str, new_key);
- #endif
- bzero(pw_str, sizeof pw_str); /* "NULL" */
- } else {
-
- principal_data[i].key_low = 0;
- principal_data[i].key_high = 0;
- goto null_key;
- }
- } else {
- #ifdef NOENCRYPTION
- bzero(new_key, sizeof(C_Block));
- new_key[0] = 127;
- #else
- string_to_key(pw_str, new_key);
- #endif
- bzero(pw_str, sizeof pw_str);
- }
-
- /* seal it under the kerberos master key */
- kdb_encrypt_key (new_key, new_key,
- master_key, master_key_schedule,
- ENCRYPT);
- bcopy(new_key, &principal_data[i].key_low, 4);
- bcopy(((long *) new_key) + 1,
- &principal_data[i].key_high, 4);
- bzero(new_key, sizeof(new_key));
- null_key:
- /* set master key version */
- principal_data[i].kdc_key_ver =
- (unsigned char) master_key_version;
- /* bump key version # */
- principal_data[i].key_version++;
- fprintf(stdout,
- "\nPrincipal's new key version = %d\n",
- principal_data[i].key_version);
- fflush(stdout);
- changed = 1;
- }
- /* expiration date */
- fprintf(stdout, "Expiration date (enter yyyy-mm-dd) [ %s ] ? ",
- principal_data[i].exp_date_txt);
- zaptime(&edate);
- while (gets(temp) && ((n = strlen(temp)) >
- sizeof(principal_data[0].exp_date_txt))) {
- bad_date:
- fprintf(stdout, "\07\07Date Invalid\n");
- fprintf(stdout,
- "Expiration date (enter yyyy-mm-dd) [ %s ] ? ",
- principal_data[i].exp_date_txt);
- zaptime(&edate);
- }
-
- if (*temp) {
- if (sscanf(temp, "%d-%d-%d", &edate.tm_year,
- &edate.tm_mon, &edate.tm_mday) != 3)
- goto bad_date;
- (void) strcpy(principal_data[i].exp_date_txt, temp);
- edate.tm_mon--; /* January is 0, not 1 */
- edate.tm_hour = 23; /* nearly midnight at the end of the */
- edate.tm_min = 59; /* specified day */
- if (!(principal_data[i].exp_date = maketime(&edate, 1)))
- goto bad_date;
- changed = 1;
- }
-
- /* maximum lifetime */
- fprintf(stdout, "Max ticket lifetime (*5 minutes) [ %d ] ? ",
- principal_data[i].max_life);
- while (gets(temp) && *temp) {
- if (sscanf(temp, "%d", &temp_long) != 1)
- goto bad_life;
- if (temp_long > 255 || (temp_long < 0)) {
- bad_life:
- fprintf(stdout, "\07\07Invalid, choose 0-255\n");
- fprintf(stdout,
- "Max ticket lifetime (*5 minutes) [ %d ] ? ",
- principal_data[i].max_life);
- continue;
- }
- changed = 1;
- /* dont clobber */
- principal_data[i].max_life = (unsigned short) temp_long;
- break;
- }
-
- /* attributes */
- fprintf(stdout, "Attributes [ %d ] ? ",
- principal_data[i].attributes);
- while (gets(temp) && *temp) {
- if (sscanf(temp, "%d", &temp_long) != 1)
- goto bad_att;
- if (temp_long > 65535 || (temp_long < 0)) {
- bad_att:
- fprintf(stdout, "\07\07Invalid, choose 0-65535\n");
- fprintf(stdout, "Attributes [ %d ] ? ",
- principal_data[i].attributes);
- continue;
- }
- changed = 1;
- /* dont clobber */
- principal_data[i].attributes =
- (unsigned short) temp_long;
- break;
- }
-
- /*
- * remaining fields -- key versions and mod info, should
- * not be directly manipulated
- */
- if (changed) {
- if (kerb_put_principal(&principal_data[i], 1)) {
- fprintf(stdout,
- "\nError updating Kerberos database");
- } else {
- fprintf(stdout, "Edit O.K.");
- }
- } else {
- fprintf(stdout, "Unchanged");
- }
-
-
- bzero(&principal_data[i].key_low, 4);
- bzero(&principal_data[i].key_high, 4);
- fflush(stdout);
- break;
- }
- }
- if (more) {
- fprintf(stdout, "\nThere were more tuples found ");
- fprintf(stdout, "than there were space for");
- }
- return 1;
- }
-
-
- no_core_dumps()
- {
-
- signal(SIGQUIT, sig_exit);
- signal(SIGILL, sig_exit);
- signal(SIGTRAP, sig_exit);
- signal(SIGIOT, sig_exit);
- signal(SIGEMT, sig_exit);
- signal(SIGFPE, sig_exit);
- signal(SIGBUS, sig_exit);
- signal(SIGSEGV, sig_exit);
- signal(SIGSYS, sig_exit);
- }
-
- void
- sig_exit(sig, code, scp)
- int sig, code;
- struct sigcontext *scp;
- {
- cleanup();
- fprintf(stderr,
- "\nSignal caught, sig = %d code = %d old pc = 0x%X \nexiting",
- sig, code, scp->sc_pc);
- exit(-1);
- }
-
-
- cleanup()
- {
-
- bzero(master_key, sizeof(master_key));
- bzero(session_key, sizeof(session_key));
- bzero(master_key_schedule, sizeof(master_key_schedule));
- bzero(principal_data, sizeof(principal_data));
- bzero(new_key, sizeof(new_key));
- bzero(pw_str, sizeof(pw_str));
- }
- Usage()
- {
- fprintf(stderr, "Usage: %s [-n]\n", progname);
- exit(1);
- }
-