*/
#ifndef lint
-static char sccsid[] = "@(#)krb_passwd.c 8.1 (Berkeley) %G%";
+static char sccsid[] = "@(#)krb_passwd.c 8.2 (Berkeley) %G%";
#endif /* not lint */
#ifdef KERBEROS
#include <netinet/in.h>
#include <kerberosIV/des.h>
#include <kerberosIV/krb.h>
+
+#include <err.h>
+#include <errno.h>
#include <netdb.h>
-#include <signal.h>
#include <pwd.h>
-#include <errno.h>
+#include <signal.h>
#include <stdio.h>
-#include "kpasswd_proto.h"
-#include <string.h>
#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "kpasswd_proto.h"
+
+#include "extern.h"
#define PROTO "tcp"
+static void send_update __P((int, char *, char *));
+static void recv_ack __P((int));
+static void cleanup __P((void));
+static void finish __P((void));
+
static struct timeval timeout = { CLIENT_KRB_TIMEOUT, 0 };
static struct kpasswd_data proto_data;
static des_cblock okey;
static Key_schedule osched;
-KTEXT_ST ticket;
-Key_schedule random_schedule;
-long authopts;
-char realm[REALM_SZ], krbhst[MAX_HSTNM];
-int sock;
+static KTEXT_ST ticket;
+static Key_schedule random_schedule;
+static long authopts;
+static char realm[REALM_SZ], krbhst[MAX_HSTNM];
+static int sock;
+int
krb_passwd()
{
struct servent *se;
(void)signal(SIGTSTP, SIG_IGN);
if (setrlimit(RLIMIT_CORE, &rl) < 0) {
- (void)fprintf(stderr,
- "passwd: setrlimit: %s\n", strerror(errno));
- return(1);
+ warn("setrlimit");
+ return (1);
}
if ((se = getservbyname(SERVICE, PROTO)) == NULL) {
- (void)fprintf(stderr,
- "passwd: couldn't find entry for service %s/%s\n",
+ warnx("couldn't find entry for service %s/%s",
SERVICE, PROTO);
- return(1);
+ return (1);
}
if ((rval = krb_get_lrealm(realm,1)) != KSUCCESS) {
- (void)fprintf(stderr,
- "passwd: couldn't get local Kerberos realm: %s\n",
+ warnx("couldn't get local Kerberos realm: %s",
krb_err_txt[rval]);
- return(1);
+ return (1);
}
if ((rval = krb_get_krbhst(krbhst, realm, 1)) != KSUCCESS) {
- (void)fprintf(stderr,
- "passwd: couldn't get Kerberos host: %s\n",
+ warnx("couldn't get Kerberos host: %s",
krb_err_txt[rval]);
- return(1);
+ return (1);
}
if ((host = gethostbyname(krbhst)) == NULL) {
- (void)fprintf(stderr,
- "passwd: couldn't get host entry for krb host %s\n",
+ warnx("couldn't get host entry for krb host %s",
krbhst);
- return(1);
+ return (1);
}
sin.sin_family = host->h_addrtype;
- bcopy(host->h_addr, (char *) &sin.sin_addr, host->h_length);
+ memmove((char *) &sin.sin_addr, host->h_addr, host->h_length);
sin.sin_port = se->s_port;
if ((sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
- (void)fprintf(stderr, "passwd: socket: %s\n", strerror(errno));
- return(1);
+ warn("socket");
+ return (1);
}
if (connect(sock, (struct sockaddr *) &sin, sizeof(sin)) < 0) {
- (void)fprintf(stderr, "passwd: connect: %s\n", strerror(errno));
+ warn("connect");
(void)close(sock);
- return(1);
+ return (1);
}
rval = krb_sendauth(
);
if (rval != KSUCCESS) {
- (void)fprintf(stderr, "passwd: Kerberos sendauth error: %s\n",
- krb_err_txt[rval]);
- return(1);
+ warnx("Kerberos sendauth error: %s", krb_err_txt[rval]);
+ return (1);
}
krb_get_cred("krbtgt", realm, realm, &cred);
if (des_read_pw_string(pass,
sizeof(pass)-1, "Old Kerberos password:", 0)) {
- (void)fprintf(stderr,
- "passwd: error reading old Kerberos password\n");
- return(1);
+ warnx("error reading old Kerberos password");
+ return (1);
}
(void)des_string_to_key(pass, okey);
if ((rval < 1) || !FD_ISSET(sock, &readfds)) {
if(rval == 0) {
- (void)fprintf(stderr, "passwd: timed out (aborted)\n");
+ warnx("timed out (aborted)");
cleanup();
- return(1);
+ return (1);
}
- (void)fprintf(stderr, "passwd: select failed (aborted)\n");
+ warnx("select failed (aborted)");
cleanup();
- return(1);
+ return (1);
}
/* read verification string */
if (des_read(sock, &proto_data, sizeof(proto_data)) !=
sizeof(proto_data)) {
- (void)fprintf(stderr,
- "passwd: couldn't read verification string (aborted)\n");
+ warnx("couldn't read verification string (aborted)");
cleanup();
- return(1);
+ return (1);
}
(void)signal(SIGHUP, finish);
cleanup();
/* don't complain loud if user just hit return */
if (pass == NULL || (!*pass))
- return(0);
+ return (0);
(void)fprintf(stderr, "Sorry\n");
- return(1);
+ return (1);
}
(void)des_key_sched(proto_data.random_key, random_schedule);
(void)des_set_key(proto_data.random_key, random_schedule);
- (void)bzero(pass, sizeof(pass));
+ (void)memset(pass, 0, sizeof(pass));
if (des_read_pw_string(pass,
sizeof(pass)-1, "New Kerberos password:", 0)) {
- (void)fprintf(stderr,
- "passwd: error reading new Kerberos password (aborted)\n");
+ warnx("error reading new Kerberos password (aborted)");
cleanup();
- return(1);
+ return (1);
}
if (des_read_pw_string(password,
sizeof(password)-1, "Retype new Kerberos password:", 0)) {
- (void)fprintf(stderr,
- "passwd: error reading new Kerberos password (aborted)\n");
+ warnx("error reading new Kerberos password (aborted)");
cleanup();
- return(1);
+ return (1);
}
if (strcmp(password, pass) != 0) {
- (void)fprintf(stderr,
- "passwd: password mismatch (aborted)\n");
+ warnx("password mismatch (aborted)");
cleanup();
- return(1);
+ return (1);
}
if (strlen(pass) == 0)
select(sock + 1, &readfds, (fd_set *) 0, (fd_set *) 0, &timeout);
if ((rval < 1) || !FD_ISSET(sock, &readfds)) {
if(rval == 0) {
- (void)fprintf(stderr,
- "passwd: timed out reading ACK (aborted)\n");
+ warnx("timed out reading ACK (aborted)");
cleanup();
exit(1);
}
- (void)fprintf(stderr, "passwd: select failed (aborted)\n");
+ warnx("select failed (aborted)");
cleanup();
exit(1);
}
recv_ack(sock);
cleanup();
- exit(0);
+ return (0);
}
+static void
send_update(dest, pwd, str)
int dest;
char *pwd, *str;
(void)strncpy(ud.secure_msg, str, _PASSWORD_LEN);
(void)strncpy(ud.pw, pwd, sizeof(ud.pw));
if (des_write(dest, &ud, sizeof(ud)) != sizeof(ud)) {
- (void)fprintf(stderr,
- "passwd: couldn't write pw update (abort)\n");
- bzero((char *)&ud, sizeof(ud));
+ warnx("couldn't write pw update (abort)");
+ memset((char *)&ud, 0, sizeof(ud));
cleanup();
exit(1);
}
}
+static void
recv_ack(remote)
int remote;
{
cc = des_read(remote, buf, sizeof(buf));
if (cc <= 0) {
- (void)fprintf(stderr,
- "passwd: error reading acknowledgement (aborted)\n");
+ warnx("error reading acknowledgement (aborted)");
cleanup();
exit(1);
}
(void)printf("%s", buf);
}
+static void
cleanup()
{
- (void)bzero((char *)&proto_data, sizeof(proto_data));
- (void)bzero((char *)okey, sizeof(okey));
- (void)bzero((char *)osched, sizeof(osched));
- (void)bzero((char *)random_schedule, sizeof(random_schedule));
+
+ (void)memset((char *)&proto_data, 0, sizeof(proto_data));
+ (void)memset((char *)okey, 0, sizeof(okey));
+ (void)memset((char *)osched, 0, sizeof(osched));
+ (void)memset((char *)random_schedule, 0, sizeof(random_schedule));
}
static void
finish()
{
+
(void)close(sock);
exit(1);
}