krb5_error_code
Leash_krb5_cc_default(krb5_context *ctx, krb5_ccache *cache)
{
krb5_error_code rc;
krb5_flags flags;
char *functionName = NULL;
if (*cache == 0) {
rc = pkrb5_cc_default(*ctx, cache);
if (rc) {
functionName = "krb5_cc_default()";
goto on_error;
}
}
#ifdef KRB5_TC_NOTICKET
flags = KRB5_TC_NOTICKET;
#endif
rc = pkrb5_cc_set_flags(*ctx, *cache, flags);
if (rc) {
if (rc == KRB5_FCC_NOFILE || rc == KRB5_CC_NOTFOUND) {
if (*cache != NULL && *ctx != NULL)
pkrb5_cc_close(*ctx, *cache);
} else {
functionName = "krb5_cc_set_flags()";
goto on_error;
}
}
on_error:
if (rc && functionName) {
Leash_krb5_error(rc, functionName, 0, ctx, cache);
}
return rc;
}
int
do_ccache(krb5_context ctx,
krb5_ccache cache,
TICKETINFO ***ticketInfoTail)
{
krb5_cc_cursor cur;
krb5_creds creds;
krb5_principal princ = NULL;
krb5_flags flags;
krb5_error_code code;
char *defname = NULL;
char *functionName = NULL;
TicketList **ticketListTail;
TICKETINFO *ticketinfo;
flags = 0; /* turns off OPENCLOSE mode */
code = pkrb5_cc_set_flags(ctx, cache, flags);
if (code) {
functionName = "krb5_cc_set_flags";
goto cleanup;
}
code = pkrb5_cc_get_principal(ctx, cache, &princ);
if (code) {
functionName = "krb5_cc_get_principal";
goto cleanup;
}
code = pkrb5_unparse_name(ctx, princ, &defname);
if (code) {
functionName = "krb5_unparse_name";
goto cleanup;
}
code = pkrb5_cc_start_seq_get(ctx, cache, &cur);
if (code) {
functionName = "krb5_cc_start_seq_get";
goto cleanup;
}
ticketinfo = calloc(1, sizeof(TICKETINFO));
if (ticketinfo == NULL) {
functionName = "calloc";
code = ENOMEM;
goto cleanup;
}
ticketinfo->next = NULL;
ticketinfo->ticket_list = NULL;
ticketinfo->principal = strdup(defname);
if (ticketinfo->principal == NULL) {
functionName = "strdup";
code = ENOMEM;
goto cleanup;
}
ticketinfo->ccache_name = strdup(pkrb5_cc_get_name(ctx, cache));
if (ticketinfo->ccache_name == NULL) {
functionName = "strdup";
code = ENOMEM;
goto cleanup;
}
**ticketInfoTail = ticketinfo;
*ticketInfoTail = &ticketinfo->next;
ticketListTail = &ticketinfo->ticket_list;
while (!(code = pkrb5_cc_next_cred(ctx, cache, &cur, &creds))) {
if (pkrb5_is_config_principal(ctx, creds.server))
continue;
CredToTicketList(ctx, creds, defname, &ticketListTail);
CredToTicketInfo(creds, ticketinfo);
pkrb5_free_cred_contents(ctx, &creds);
}
if (code == KRB5_CC_END) {
code = pkrb5_cc_end_seq_get(ctx, cache, &cur);
if (code) {
functionName = "krb5_cc_end_seq_get";
goto cleanup;
}
flags = KRB5_TC_OPENCLOSE; /* turns on OPENCLOSE mode */
code = pkrb5_cc_set_flags(ctx, cache, flags);
if (code) {
functionName = "krb5_cc_set_flags";
goto cleanup;
}
} else {
functionName = "krb5_cc_next_cred";
goto cleanup;
}
cleanup:
if (code) {
Leash_krb5_error(code, functionName, 0, NULL, NULL);
}
if (princ)
pkrb5_free_principal(ctx, princ);
if (defname)
pkrb5_free_unparsed_name(ctx, defname);
return code ? 1 : 0;
}
int
LeashKRB5_renew(void)
{
#ifdef NO_KRB5
return(0);
#else
krb5_error_code code = 0;
krb5_context ctx = 0;
krb5_ccache cc = 0;
krb5_principal me = 0;
krb5_principal server = 0;
krb5_creds my_creds;
krb5_data *realm = 0;
if ( !pkrb5_init_context )
goto cleanup;
memset(&my_creds, 0, sizeof(krb5_creds));
code = pkrb5_init_context(&ctx);
if (code) goto cleanup;
code = pkrb5_cc_default(ctx, &cc);
if (code) goto cleanup;
code = pkrb5_cc_get_principal(ctx, cc, &me);
if (code) goto cleanup;
realm = krb5_princ_realm(ctx, me);
code = pkrb5_build_principal_ext(ctx, &server,
realm->length,realm->data,
KRB5_TGS_NAME_SIZE, KRB5_TGS_NAME,
realm->length,realm->data,
0);
if ( code ) goto cleanup;
my_creds.client = me;
my_creds.server = server;
#ifdef KRB5_TC_NOTICKET
pkrb5_cc_set_flags(ctx, cc, 0);
#endif
code = pkrb5_get_renewed_creds(ctx, &my_creds, me, cc, NULL);
#ifdef KRB5_TC_NOTICKET
pkrb5_cc_set_flags(ctx, cc, KRB5_TC_NOTICKET);
#endif
if (code) {
if ( code != KRB5KDC_ERR_ETYPE_NOSUPP ||
code != KRB5_KDC_UNREACH)
Leash_krb5_error(code, "krb5_get_renewed_creds()", 0, &ctx, &cc);
goto cleanup;
}
code = pkrb5_cc_initialize(ctx, cc, me);
if (code) goto cleanup;
code = pkrb5_cc_store_cred(ctx, cc, &my_creds);
if (code) goto cleanup;
cleanup:
if (my_creds.client == me)
my_creds.client = 0;
if (my_creds.server == server)
my_creds.server = 0;
pkrb5_free_cred_contents(ctx, &my_creds);
if (me)
pkrb5_free_principal(ctx, me);
if (server)
pkrb5_free_principal(ctx, server);
if (cc)
pkrb5_cc_close(ctx, cc);
if (ctx)
pkrb5_free_context(ctx);
return(code);
#endif /* NO_KRB5 */
}
int
Leash_afs_klog(
char *service,
char *cell,
char *realm,
int LifeTime
)
{
/////#ifdef NO_AFS
#if defined(NO_AFS) || defined(NO_KRB4)
return(0);
#else
long rc;
////This is defined in krb.h:
CREDENTIALS creds;
KTEXT_ST ticket;
struct ktc_principal aserver;
struct ktc_principal aclient;
char realm_of_user[REALM_SZ]; /* Kerberos realm of user */
char realm_of_cell[REALM_SZ]; /* Kerberos realm of cell */
char local_cell[MAXCELLCHARS+1];
char Dmycell[MAXCELLCHARS+1];
struct ktc_token atoken;
struct ktc_token btoken;
afsconf_cell ak_cellconfig; /* General information about the cell */
char RealmName[128];
char CellName[128];
char ServiceName[128];
DWORD CurrentState;
char HostName[64];
BOOL try_krb5 = 0;
int retry = 0;
int len;
#ifndef NO_KRB5
krb5_context context = 0;
krb5_ccache _krb425_ccache = 0;
krb5_creds increds;
krb5_creds * k5creds = 0;
krb5_error_code r;
krb5_principal client_principal = 0;
krb5_flags flags = 0;
#endif /* NO_KRB5 */
if (!AfsAvailable || GetAfsStatus(&AfsOnLine) && !AfsOnLine)
return(0);
if ( !realm ) realm = "";
if ( !cell ) cell = "";
if ( !service ) service = "";
CurrentState = 0;
memset(HostName, '\0', sizeof(HostName));
gethostname(HostName, sizeof(HostName));
if (GetServiceStatus(HostName, TRANSARCAFSDAEMON, &CurrentState) != NOERROR)
return(0);
if (CurrentState != SERVICE_RUNNING)
return(0);
memset(RealmName, '\0', sizeof(RealmName));
memset(CellName, '\0', sizeof(CellName));
memset(ServiceName, '\0', sizeof(ServiceName));
memset(realm_of_user, '\0', sizeof(realm_of_user));
memset(realm_of_cell, '\0', sizeof(realm_of_cell));
memset(Dmycell, '\0', sizeof(Dmycell));
// NULL or empty cell returns information on local cell
if (cell && cell[0])
strcpy(Dmycell, cell);
rc = get_cellconfig(Dmycell, &ak_cellconfig, local_cell);
if (rc && cell && cell[0]) {
memset(Dmycell, '\0', sizeof(Dmycell));
rc = get_cellconfig(Dmycell, &ak_cellconfig, local_cell);
}
if (rc)
return(rc);
#ifndef NO_KRB5
if (!(r = Leash_krb5_initialize(&context, &_krb425_ccache))) {
int i;
memset((char *)&increds, 0, sizeof(increds));
(*pkrb5_cc_get_principal)(context, _krb425_ccache, &client_principal);
i = krb5_princ_realm(context, client_principal)->length;
if (i > REALM_SZ-1)
i = REALM_SZ-1;
strncpy(realm_of_user,krb5_princ_realm(context, client_principal)->data,i);
realm_of_user[i] = 0;
try_krb5 = 1;
}
#endif /* NO_KRB5 */
#ifndef NO_KRB4
if ( !try_krb5 || !realm_of_user[0] ) {
if ((rc = (*pkrb_get_tf_realm)((*ptkt_string)(), realm_of_user)) != KSUCCESS)
{
return(rc);
}
}
#endif
strcpy(realm_of_cell, afs_realm_of_cell(&ak_cellconfig));
if (strlen(service) == 0)
strcpy(ServiceName, "afs");
else
strcpy(ServiceName, service);
if (strlen(cell) == 0)
strcpy(CellName, local_cell);
else
strcpy(CellName, cell);
if (strlen(realm) == 0)
strcpy(RealmName, realm_of_cell);
else
strcpy(RealmName, realm);
memset(&creds, '\0', sizeof(creds));
#ifndef NO_KRB5
if ( try_krb5 ) {
/* First try Service/Cell@REALM */
if (r = (*pkrb5_build_principal)(context, &increds.server,
strlen(RealmName),
RealmName,
ServiceName,
CellName,
0))
{
try_krb5 = 0;
goto use_krb4;
}
increds.client = client_principal;
increds.times.endtime = 0;
/* Ask for DES since that is what V4 understands */
increds.keyblock.enctype = ENCTYPE_DES_CBC_CRC;
#ifdef KRB5_TC_NOTICKET
flags = 0;
r = pkrb5_cc_set_flags(context, _krb425_ccache, flags);
#endif
if (r == 0)
r = pkrb5_get_credentials(context, 0, _krb425_ccache, &increds, &k5creds);
if (r == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ||
r == KRB5KRB_ERR_GENERIC /* Heimdal */) {
/* Next try Service@REALM */
pkrb5_free_principal(context, increds.server);
r = pkrb5_build_principal(context, &increds.server,
strlen(RealmName),
RealmName,
ServiceName,
0);
if (r == 0)
r = pkrb5_get_credentials(context, 0, _krb425_ccache, &increds, &k5creds);
}
pkrb5_free_principal(context, increds.server);
pkrb5_free_principal(context, client_principal);
#ifdef KRB5_TC_NOTICKET
flags = KRB5_TC_NOTICKET;
pkrb5_cc_set_flags(context, _krb425_ccache, flags);
#endif
(void) pkrb5_cc_close(context, _krb425_ccache);
_krb425_ccache = 0;
if (r || k5creds == 0) {
pkrb5_free_context(context);
try_krb5 = 0;
goto use_krb4;
}
/* This code inserts the entire K5 ticket into the token
* No need to perform a krb524 translation which is
* commented out in the code below
*/
if ( use_krb524() || k5creds->ticket.length > MAXKTCTICKETLEN )
goto try_krb524d;
memset(&aserver, '\0', sizeof(aserver));
strncpy(aserver.name, ServiceName, MAXKTCNAMELEN - 1);
strncpy(aserver.cell, CellName, MAXKTCREALMLEN - 1);
memset(&atoken, '\0', sizeof(atoken));
atoken.kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
atoken.startTime = k5creds->times.starttime;
atoken.endTime = k5creds->times.endtime;
memcpy(&atoken.sessionKey, k5creds->keyblock.contents, k5creds->keyblock.length);
atoken.ticketLen = k5creds->ticket.length;
memcpy(atoken.ticket, k5creds->ticket.data, atoken.ticketLen);
retry_gettoken5:
rc = ktc_GetToken(&aserver, &btoken, sizeof(btoken), &aclient);
if (rc != 0 && rc != KTC_NOENT && rc != KTC_NOCELL) {
if ( rc == KTC_NOCM && retry < 20 ) {
Sleep(500);
retry++;
goto retry_gettoken5;
}
goto try_krb524d;
}
if (atoken.kvno == btoken.kvno &&
atoken.ticketLen == btoken.ticketLen &&
!memcmp(&atoken.sessionKey, &btoken.sessionKey, sizeof(atoken.sessionKey)) &&
!memcmp(atoken.ticket, btoken.ticket, atoken.ticketLen))
{
/* Success */
pkrb5_free_creds(context, k5creds);
pkrb5_free_context(context);
return(0);
}
// * Reset the "aclient" structure before we call ktc_SetToken.
// * This structure was first set by the ktc_GetToken call when
// * we were comparing whether identical tokens already existed.
len = min(k5creds->client->data[0].length,MAXKTCNAMELEN - 1);
strncpy(aclient.name, k5creds->client->data[0].data, len);
aclient.name[len] = '\0';
if ( k5creds->client->length > 1 ) {
char * p;
strcat(aclient.name, ".");
p = aclient.name + strlen(aclient.name);
len = min(k5creds->client->data[1].length,MAXKTCNAMELEN - strlen(aclient.name) - 1);
strncpy(p, k5creds->client->data[1].data, len);
p[len] = '\0';
}
aclient.instance[0] = '\0';
strcpy(aclient.cell, realm_of_cell);
len = min(k5creds->client->realm.length,strlen(realm_of_cell));
if ( strncmp(realm_of_cell, k5creds->client->realm.data, len) ) {
char * p;
strcat(aclient.name, "@");
p = aclient.name + strlen(aclient.name);
len = min(k5creds->client->realm.length,MAXKTCNAMELEN - strlen(aclient.name) - 1);
strncpy(p, k5creds->client->realm.data, len);
p[len] = '\0';
}
rc = ktc_SetToken(&aserver, &atoken, &aclient, 0);
if (!rc) {
/* Success */
pkrb5_free_creds(context, k5creds);
pkrb5_free_context(context);
return(0);
}
try_krb524d:
/* This requires krb524d to be running with the KDC */
r = pkrb524_convert_creds_kdc(context, k5creds, &creds);
pkrb5_free_creds(context, k5creds);
pkrb5_free_context(context);
if (r) {
try_krb5 = 0;
goto use_krb4;
}
rc = KSUCCESS;
} else
#endif /* NO_KRB5 */
{
use_krb4:
rc = KFAILURE;
}
if (rc != KSUCCESS)
{
return(rc);
}
memset(&aserver, '\0', sizeof(aserver));
strncpy(aserver.name, ServiceName, MAXKTCNAMELEN - 1);
strncpy(aserver.cell, CellName, MAXKTCNAMELEN - 1);
memset(&atoken, '\0', sizeof(atoken));
atoken.kvno = creds.kvno;
atoken.startTime = creds.issue_date;
atoken.endTime = (*pkrb_life_to_time)(creds.issue_date,creds.lifetime);
memcpy(&atoken.sessionKey, creds.session, 8);
atoken.ticketLen = creds.ticket_st.length;
memcpy(atoken.ticket, creds.ticket_st.dat, atoken.ticketLen);
if (!(rc = ktc_GetToken(&aserver, &btoken, sizeof(btoken), &aclient)) &&
atoken.kvno == btoken.kvno &&
atoken.ticketLen == btoken.ticketLen &&
!memcmp(&atoken.sessionKey, &btoken.sessionKey, sizeof(atoken.sessionKey)) &&
!memcmp(atoken.ticket, btoken.ticket, atoken.ticketLen))
{
return(0);
}
// * Reset the "aclient" structure before we call ktc_SetToken.
// * This structure was first set by the ktc_GetToken call when
// * we were comparing whether identical tokens already existed.
strncpy(aclient.name, creds.pname, MAXKTCNAMELEN - 1);
aclient.name[MAXKTCNAMELEN - 1] = '\0';
if (creds.pinst[0])
{
strncat(aclient.name, ".", MAXKTCNAMELEN - 1 - strlen(aclient.name));
aclient.name[MAXKTCNAMELEN - 1] = '\0';
strncat(aclient.name, creds.pinst, MAXKTCNAMELEN - 1 - strlen(aclient.name));
aclient.name[MAXKTCNAMELEN - 1] = '\0';
}
strcpy(aclient.instance, "");
if ( strcmp(realm_of_cell, creds.realm) )
{
strncat(aclient.name, "@", MAXKTCNAMELEN - 1 - strlen(aclient.name));
aclient.name[MAXKTCNAMELEN - 1] = '\0';
strncat(aclient.name, creds.realm, MAXKTCNAMELEN - 1 - strlen(aclient.name));
aclient.name[MAXKTCNAMELEN - 1] = '\0';
}
aclient.name[MAXKTCNAMELEN-1] = '\0';
strcpy(aclient.cell, CellName);
// * NOTE: On WIN32, the order of SetToken params changed...
// * to ktc_SetToken(&aserver, &aclient, &atoken, 0)
// * from ktc_SetToken(&aserver, &atoken, &aclient, 0) on Unix...
// * The afscompat ktc_SetToken provides the Unix order
if (rc = ktc_SetToken(&aserver, &atoken, &aclient, 0))
{
Leash_afs_error(rc, "ktc_SetToken()");
return(rc);
}
return(0);
#endif
}
