static time_t
renew_func(void *ptr)
{
struct renew_ctx *ctx = ptr;
krb5_error_code ret;
time_t expire;
int new_tickets = 0;
if (renewable_flag) {
ret = renew_validate(ctx->context, renewable_flag, validate_flag,
ctx->ccache, server_str, ctx->ticket_life);
if (ret)
new_tickets = 1;
} else
new_tickets = 1;
if (new_tickets)
get_new_tickets(ctx->context, ctx->principal,
ctx->ccache, ctx->ticket_life, 0);
#ifndef NO_AFS
if(do_afslog && k_hasafs())
krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
#endif
expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
server_str) / 2;
return expire + 1;
}
static time_t
renew_func(void *ptr)
{
struct renew_ctx *ctx = ptr;
time_t expire;
time_t renew_expire;
static time_t exp_delay = 1;
expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
server_str, &renew_expire);
if (renew_expire > expire) {
renew_validate(ctx->context, 1, validate_flag, ctx->ccache,
server_str, ctx->ticket_life);
expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
server_str, &renew_expire);
}
if (expire < ctx->ticket_life / 2) {
get_new_tickets(ctx->context, ctx->principal,
ctx->ccache, ctx->ticket_life, 0);
expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
server_str, &renew_expire);
}
#ifndef NO_AFS
if(do_afslog && k_hasafs())
krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
#endif
/*
* If our tickets have expired and we been able to either renew them
* or obtain new tickets, then we still call this function but we use
* an exponential backoff. This should take care of the case where
* we are using stored credentials but the KDC has been unavailable
* for some reason...
*/
if (expire < 1) {
if (exp_delay < 7200)
exp_delay *= 2;
return exp_delay;
}
exp_delay = 1;
return expire / 2 + 1;
}
static time_t
renew_func(void *ptr)
{
krb5_error_code ret;
struct renew_ctx *ctx = ptr;
time_t renew_expire;
static time_t exp_delay = 1;
/*
* NOTE: We count on the ccache implementation to notice changes to the
* actual ccache filesystem/whatever objects. There should be no ccache
* types for which this is not the case, but it might not hurt to
* re-krb5_cc_resolve() after each successful renew_validate()/
* get_new_tickets() call.
*/
expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
server_str, &renew_expire);
/*
* When a keytab is available to obtain new tickets, if we are within
* half of the original ticket lifetime of the renew limit, get a new
* TGT instead of renewing the existing TGT. Note, ctx->ticket_life
* is zero by default (without a '-l' option) and cannot be used to
* set the time scale on which we decide whether we're "close to the
* renew limit".
*/
if (use_keytab || keytab_str)
expire += ctx->timeout;
if (renew_expire > expire) {
ret = renew_validate(ctx->context, 1, validate_flag, ctx->ccache,
server_str, ctx->ticket_life);
} else {
ret = get_new_tickets(ctx->context, ctx->principal, ctx->ccache,
ctx->ticket_life, 0);
}
expire = ticket_lifetime(ctx->context, ctx->ccache, ctx->principal,
server_str, &renew_expire);
#ifndef NO_AFS
if (ret == 0 && server_str == NULL && do_afslog && k_hasafs())
krb5_afslog(ctx->context, ctx->ccache, NULL, NULL);
#endif
update_siginfo_msg(expire, server_str);
/*
* If our tickets have expired and we been able to either renew them
* or obtain new tickets, then we still call this function but we use
* an exponential backoff. This should take care of the case where
* we are using stored credentials but the KDC has been unavailable
* for some reason...
*/
if (expire < 1) {
/*
* We can't ask to keep spamming stderr but not syslog, so we warn
* only once.
*/
if (exp_delay == 1) {
krb5_warnx(ctx->context, N_("NOTICE: Could not renew/refresh "
"tickets", ""));
}
if (exp_delay < 7200)
exp_delay += exp_delay / 2 + 1;
return exp_delay;
}
exp_delay = 1;
return expire / 2 + 1;
}
int
main(int argc, char **argv)
{
krb5_error_code ret;
krb5_context context;
krb5_ccache ccache;
krb5_principal principal = NULL;
int optidx = 0;
krb5_deltat ticket_life = 0;
#ifdef HAVE_SIGACTION
struct sigaction sa;
#endif
setprogname(argv[0]);
setlocale(LC_ALL, "");
bindtextdomain("heimdal_kuser", HEIMDAL_LOCALEDIR);
textdomain("heimdal_kuser");
ret = krb5_init_context(&context);
if (ret == KRB5_CONFIG_BADFORMAT)
errx(1, "krb5_init_context failed to parse configuration file");
else if (ret)
errx(1, "krb5_init_context failed: %d", ret);
if (getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
usage(1);
if (help_flag)
usage(0);
if (version_flag) {
print_version(NULL);
exit(0);
}
argc -= optidx;
argv += optidx;
/*
* Open the keytab now, we use the keytab to determine the principal's
* realm when the requested principal has no realm.
*/
if (use_keytab || keytab_str) {
if (keytab_str)
ret = krb5_kt_resolve(context, keytab_str, &kt);
else
ret = krb5_kt_default(context, &kt);
if (ret)
krb5_err(context, 1, ret, "resolving keytab");
}
if (pk_enterprise_flag) {
ret = krb5_pk_enterprise_cert(context, pk_user_id,
argv[0], &principal,
&ent_user_id);
if (ret)
krb5_err(context, 1, ret, "krb5_pk_enterprise_certs");
pk_user_id = NULL;
} else if (anonymous_flag) {
ret = krb5_make_principal(context, &principal, argv[0],
KRB5_WELLKNOWN_NAME, KRB5_ANON_NAME,
NULL);
if (ret)
krb5_err(context, 1, ret, "krb5_make_principal");
krb5_principal_set_type(context, principal, KRB5_NT_WELLKNOWN);
} else if (use_keytab || keytab_str) {
get_princ_kt(context, &principal, argv[0]);
} else {
get_princ(context, &principal, argv[0]);
}
if (fcache_version)
krb5_set_fcache_version(context, fcache_version);
if (renewable_flag == -1)
/* this seems somewhat pointless, but whatever */
krb5_appdefault_boolean(context, "kinit",
krb5_principal_get_realm(context, principal),
"renewable", FALSE, &renewable_flag);
if (do_afslog == -1)
krb5_appdefault_boolean(context, "kinit",
krb5_principal_get_realm(context, principal),
"afslog", TRUE, &do_afslog);
if (cred_cache)
ret = krb5_cc_resolve(context, cred_cache, &ccache);
else {
if (argc > 1) {
char s[1024];
ret = krb5_cc_new_unique(context, NULL, NULL, &ccache);
if (ret)
krb5_err(context, 1, ret, "creating cred cache");
snprintf(s, sizeof(s), "%s:%s",
krb5_cc_get_type(context, ccache),
krb5_cc_get_name(context, ccache));
setenv("KRB5CCNAME", s, 1);
} else {
ret = krb5_cc_cache_match(context, principal, &ccache);
if (ret) {
const char *type;
ret = krb5_cc_default(context, &ccache);
if (ret)
krb5_err(context, 1, ret,
N_("resolving credentials cache", ""));
/*
* Check if the type support switching, and we do,
* then do that instead over overwriting the current
* default credential
*/
type = krb5_cc_get_type(context, ccache);
if (krb5_cc_support_switch(context, type)) {
krb5_cc_close(context, ccache);
ret = get_switched_ccache(context, type, principal,
&ccache);
}
}
}
}
if (ret)
krb5_err(context, 1, ret, N_("resolving credentials cache", ""));
#ifndef NO_AFS
if (argc > 1 && k_hasafs())
k_setpag();
#endif
if (lifetime) {
int tmp = parse_time(lifetime, "s");
if (tmp < 0)
errx(1, N_("unparsable time: %s", ""), lifetime);
ticket_life = tmp;
}
if (addrs_flag == 0 && extra_addresses.num_strings > 0)
krb5_errx(context, 1,
N_("specifying both extra addresses and "
"no addresses makes no sense", ""));
{
int i;
krb5_addresses addresses;
memset(&addresses, 0, sizeof(addresses));
for(i = 0; i < extra_addresses.num_strings; i++) {
ret = krb5_parse_address(context, extra_addresses.strings[i],
&addresses);
if (ret == 0) {
krb5_add_extra_addresses(context, &addresses);
krb5_free_addresses(context, &addresses);
}
}
free_getarg_strings(&extra_addresses);
}
if (renew_flag || validate_flag) {
ret = renew_validate(context, renew_flag, validate_flag,
ccache, server_str, ticket_life);
#ifndef NO_AFS
if (ret == 0 && server_str == NULL && do_afslog && k_hasafs())
krb5_afslog(context, ccache, NULL, NULL);
#endif
exit(ret != 0);
}
ret = get_new_tickets(context, principal, ccache, ticket_life, 1);
if (ret)
exit(1);
#ifndef NO_AFS
if (ret == 0 && server_str == NULL && do_afslog && k_hasafs())
krb5_afslog(context, ccache, NULL, NULL);
#endif
if (argc > 1) {
struct renew_ctx ctx;
time_t timeout;
timeout = ticket_lifetime(context, ccache, principal,
server_str, NULL) / 2;
ctx.context = context;
ctx.ccache = ccache;
ctx.principal = principal;
ctx.ticket_life = ticket_life;
ctx.timeout = timeout;
#ifdef HAVE_SIGACTION
memset(&sa, 0, sizeof(sa));
sigemptyset(&sa.sa_mask);
sa.sa_handler = handle_siginfo;
sigaction(SIGINFO, &sa, NULL);
#endif
ret = simple_execvp_timed(argv[1], argv+1,
renew_func, &ctx, timeout);
#define EX_NOEXEC 126
#define EX_NOTFOUND 127
if (ret == EX_NOEXEC)
krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
else if (ret == EX_NOTFOUND)
krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
krb5_cc_destroy(context, ccache);
#ifndef NO_AFS
if (k_hasafs())
k_unlog();
#endif
} else {
krb5_cc_close(context, ccache);
ret = 0;
}
krb5_free_principal(context, principal);
if (kt)
krb5_kt_close(context, kt);
krb5_free_context(context);
return ret;
}
int
main (int argc, char **argv)
{
krb5_error_code ret;
krb5_context context;
krb5_ccache ccache;
krb5_principal principal;
int optidx = 0;
krb5_deltat ticket_life = 0;
int parseflags = 0;
setprogname (argv[0]);
setlocale (LC_ALL, "");
#if defined(HEIMDAL_LOCALEDIR)
bindtextdomain ("heimdal_kuser", HEIMDAL_LOCALEDIR);
textdomain("heimdal_kuser");
#endif
ret = krb5_init_context (&context);
if (ret == KRB5_CONFIG_BADFORMAT)
errx (1, "krb5_init_context failed to parse configuration file");
else if (ret)
errx(1, "krb5_init_context failed: %d", ret);
if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
usage(1);
if (help_flag)
usage (0);
if(version_flag) {
print_version(NULL);
exit(0);
}
argc -= optidx;
argv += optidx;
if (canonicalize_flag)
parseflags |= KRB5_PRINCIPAL_PARSE_ENTERPRISE;
if (argv[0]) {
ret = krb5_parse_name_flags (context, argv[0], parseflags, &principal);
if (ret)
krb5_err (context, 1, ret, "krb5_parse_name");
} else {
ret = krb5_get_default_principal (context, &principal);
if (ret)
krb5_err (context, 1, ret, "krb5_get_default_principal");
}
if(fcache_version)
krb5_set_fcache_version(context, fcache_version);
if(renewable_flag == -1)
/* this seems somewhat pointless, but whatever */
krb5_appdefault_boolean(context, "kinit",
krb5_principal_get_realm(context, principal),
"renewable", FALSE, &renewable_flag);
#ifndef HEIMDAL_SMALLER
if(get_v4_tgt == -1)
krb5_appdefault_boolean(context, "kinit",
krb5_principal_get_realm(context, principal),
"krb4_get_tickets", FALSE, &get_v4_tgt);
#endif
if(do_afslog == -1)
krb5_appdefault_boolean(context, "kinit",
krb5_principal_get_realm(context, principal),
"afslog", TRUE, &do_afslog);
if(cred_cache)
ret = krb5_cc_resolve(context, cred_cache, &ccache);
else {
if(argc > 1) {
char s[1024];
ret = krb5_cc_gen_new(context, &krb5_fcc_ops, &ccache);
if(ret)
krb5_err(context, 1, ret, "creating cred cache");
snprintf(s, sizeof(s), "%s:%s",
krb5_cc_get_type(context, ccache),
krb5_cc_get_name(context, ccache));
setenv("KRB5CCNAME", s, 1);
#ifndef HEIMDAL_SMALLER
if (get_v4_tgt) {
int fd;
if (asprintf(&krb4_cc_name, "%s_XXXXXX", TKT_ROOT) < 0)
krb5_errx(context, 1, "out of memory");
if((fd = mkstemp(krb4_cc_name)) >= 0) {
close(fd);
setenv("KRBTKFILE", krb4_cc_name, 1);
} else {
free(krb4_cc_name);
krb4_cc_name = NULL;
}
}
#endif
} else {
ret = krb5_cc_cache_match(context, principal, &ccache);
if (ret)
ret = krb5_cc_default (context, &ccache);
}
}
if (ret)
krb5_err (context, 1, ret, N_("resolving credentials cache", ""));
if(argc > 1 && k_hasafs ())
k_setpag();
if (lifetime) {
int tmp = parse_time (lifetime, "s");
if (tmp < 0)
errx (1, N_("unparsable time: %s", ""), lifetime);
ticket_life = tmp;
}
if(addrs_flag == 0 && extra_addresses.num_strings > 0)
krb5_errx(context, 1,
N_("specifying both extra addresses and "
"no addresses makes no sense", ""));
{
int i;
krb5_addresses addresses;
memset(&addresses, 0, sizeof(addresses));
for(i = 0; i < extra_addresses.num_strings; i++) {
ret = krb5_parse_address(context, extra_addresses.strings[i],
&addresses);
if (ret == 0) {
krb5_add_extra_addresses(context, &addresses);
krb5_free_addresses(context, &addresses);
}
}
free_getarg_strings(&extra_addresses);
}
if(renew_flag || validate_flag) {
ret = renew_validate(context, renew_flag, validate_flag,
ccache, server_str, ticket_life);
exit(ret != 0);
}
#ifndef HEIMDAL_SMALLER
if(!convert_524)
#endif
get_new_tickets(context, principal, ccache, ticket_life, 1);
#ifndef HEIMDAL_SMALLER
if(get_v4_tgt || convert_524)
do_524init(context, ccache, NULL, server_str);
#endif
if(do_afslog && k_hasafs())
krb5_afslog(context, ccache, NULL, NULL);
if(argc > 1) {
struct renew_ctx ctx;
time_t timeout;
timeout = ticket_lifetime(context, ccache, principal, server_str) / 2;
ctx.context = context;
ctx.ccache = ccache;
ctx.principal = principal;
ctx.ticket_life = ticket_life;
ret = simple_execvp_timed(argv[1], argv+1,
renew_func, &ctx, timeout);
#define EX_NOEXEC 126
#define EX_NOTFOUND 127
if(ret == EX_NOEXEC)
krb5_warnx(context, N_("permission denied: %s", ""), argv[1]);
else if(ret == EX_NOTFOUND)
krb5_warnx(context, N_("command not found: %s", ""), argv[1]);
krb5_cc_destroy(context, ccache);
#ifndef HEIMDAL_SMALLER
_krb5_krb_dest_tkt(context, krb4_cc_name);
#endif
if(k_hasafs())
k_unlog();
} else {
krb5_cc_close (context, ccache);
ret = 0;
}
krb5_free_principal(context, principal);
krb5_free_context (context);
return ret;
}