int cli_credentials_update_keytab(struct cli_credentials *cred)
{
krb5_error_code ret;
struct keytab_container *ktc;
struct smb_krb5_context *smb_krb5_context;
TALLOC_CTX *mem_ctx;
mem_ctx = talloc_new(cred);
if (!mem_ctx) {
return ENOMEM;
}
ret = cli_credentials_get_krb5_context(cred, &smb_krb5_context);
if (ret) {
talloc_free(mem_ctx);
return ret;
}
ret = cli_credentials_get_keytab(cred, &ktc);
if (ret != 0) {
talloc_free(mem_ctx);
return ret;
}
ret = smb_krb5_update_keytab(mem_ctx, cred, smb_krb5_context, ktc);
talloc_free(mem_ctx);
return ret;
}
int cli_credentials_new_ccache(struct cli_credentials *cred, struct ccache_container **_ccc)
{
krb5_error_code ret;
char *rand_string;
struct ccache_container *ccc = talloc(cred, struct ccache_container);
char *ccache_name;
if (!ccc) {
return ENOMEM;
}
rand_string = generate_random_str(NULL, 16);
if (!rand_string) {
talloc_free(ccc);
return ENOMEM;
}
ccache_name = talloc_asprintf(ccc, "MEMORY:%s",
rand_string);
talloc_free(rand_string);
if (!ccache_name) {
talloc_free(ccc);
return ENOMEM;
}
ret = cli_credentials_get_krb5_context(cred, &ccc->smb_krb5_context);
if (ret) {
talloc_free(ccc);
return ret;
}
talloc_reference(ccc, ccc->smb_krb5_context);
ret = krb5_cc_resolve(ccc->smb_krb5_context->krb5_context, ccache_name, &ccc->ccache);
if (ret) {
DEBUG(1,("failed to generate a new krb5 ccache (%s): %s\n",
ccache_name,
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccache_name);
talloc_free(ccc);
return ret;
}
talloc_set_destructor(ccc, free_mccache);
cred->ccache = ccc;
talloc_steal(cred, ccc);
talloc_free(ccache_name);
if (_ccc) {
*_ccc = ccc;
}
return ret;
}
/* Get the keytab (actually, a container containing the krb5_keytab)
* attached to this context. If this hasn't been done or set before,
* it will be generated from the password.
*/
_PUBLIC_ int cli_credentials_get_keytab(struct cli_credentials *cred,
struct loadparm_context *lp_ctx,
struct keytab_container **_ktc)
{
krb5_error_code ret;
struct keytab_container *ktc;
struct smb_krb5_context *smb_krb5_context;
TALLOC_CTX *mem_ctx;
if (cred->keytab_obtained >= (MAX(cred->principal_obtained,
cred->username_obtained))) {
*_ktc = cred->keytab;
return 0;
}
if (cli_credentials_is_anonymous(cred)) {
return EINVAL;
}
ret = cli_credentials_get_krb5_context(cred, lp_ctx,
&smb_krb5_context);
if (ret) {
return ret;
}
mem_ctx = talloc_new(cred);
if (!mem_ctx) {
return ENOMEM;
}
ret = smb_krb5_create_memory_keytab(mem_ctx, cred,
smb_krb5_context, &ktc);
if (ret) {
talloc_free(mem_ctx);
return ret;
}
cred->keytab_obtained = (MAX(cred->principal_obtained,
cred->username_obtained));
talloc_steal(cred, ktc);
cred->keytab = ktc;
*_ktc = cred->keytab;
talloc_free(mem_ctx);
return ret;
}
_PUBLIC_ int cli_credentials_set_keytab_name(struct cli_credentials *cred,
struct loadparm_context *lp_ctx,
const char *keytab_name,
enum credentials_obtained obtained)
{
krb5_error_code ret;
struct keytab_container *ktc;
struct smb_krb5_context *smb_krb5_context;
TALLOC_CTX *mem_ctx;
if (cred->keytab_obtained >= obtained) {
return 0;
}
ret = cli_credentials_get_krb5_context(cred, lp_ctx, &smb_krb5_context);
if (ret) {
return ret;
}
mem_ctx = talloc_new(cred);
if (!mem_ctx) {
return ENOMEM;
}
ret = smb_krb5_get_keytab_container(mem_ctx, smb_krb5_context,
NULL, keytab_name, &ktc);
if (ret) {
return ret;
}
cred->keytab_obtained = obtained;
talloc_steal(cred, ktc);
cred->keytab = ktc;
talloc_free(mem_ctx);
return ret;
}
_PUBLIC_ int cli_credentials_get_server_gss_creds(struct cli_credentials *cred,
struct loadparm_context *lp_ctx,
struct gssapi_creds_container **_gcc)
{
int ret = 0;
OM_uint32 maj_stat, min_stat;
struct gssapi_creds_container *gcc;
struct keytab_container *ktc;
struct smb_krb5_context *smb_krb5_context;
TALLOC_CTX *mem_ctx;
krb5_principal princ;
const char *error_string;
enum credentials_obtained obtained;
mem_ctx = talloc_new(cred);
if (!mem_ctx) {
return ENOMEM;
}
ret = cli_credentials_get_krb5_context(cred, lp_ctx, &smb_krb5_context);
if (ret) {
return ret;
}
ret = principal_from_credentials(mem_ctx, cred, smb_krb5_context, &princ, &obtained, &error_string);
if (ret) {
DEBUG(1,("cli_credentials_get_server_gss_creds: making krb5 principal failed (%s)\n",
error_string));
talloc_free(mem_ctx);
return ret;
}
if (cred->server_gss_creds_obtained >= (MAX(cred->keytab_obtained, obtained))) {
talloc_free(mem_ctx);
*_gcc = cred->server_gss_creds;
return 0;
}
ret = cli_credentials_get_keytab(cred, lp_ctx, &ktc);
if (ret) {
DEBUG(1, ("Failed to get keytab for GSSAPI server: %s\n", error_message(ret)));
return ret;
}
gcc = talloc(cred, struct gssapi_creds_container);
if (!gcc) {
talloc_free(mem_ctx);
return ENOMEM;
}
if (ktc->password_based || obtained < CRED_SPECIFIED) {
/* This creates a GSSAPI cred_id_t for match-by-key with only the keytab set */
maj_stat = gss_krb5_import_cred(&min_stat, NULL, NULL, ktc->keytab,
&gcc->creds);
} else {
/* This creates a GSSAPI cred_id_t with the principal and keytab set, matching by name */
maj_stat = gss_krb5_import_cred(&min_stat, NULL, princ, ktc->keytab,
&gcc->creds);
}
if (maj_stat) {
if (min_stat) {
ret = min_stat;
} else {
ret = EINVAL;
}
}
if (ret == 0) {
cred->server_gss_creds_obtained = cred->keytab_obtained;
talloc_set_destructor(gcc, free_gssapi_creds);
cred->server_gss_creds = gcc;
*_gcc = gcc;
}
talloc_free(mem_ctx);
return ret;
}
/* Get the keytab (actually, a container containing the krb5_keytab)
* attached to this context. If this hasn't been done or set before,
* it will be generated from the password.
*/
_PUBLIC_ int cli_credentials_get_keytab(struct cli_credentials *cred,
struct loadparm_context *lp_ctx,
struct keytab_container **_ktc)
{
krb5_error_code ret;
struct keytab_container *ktc;
struct smb_krb5_context *smb_krb5_context;
const char *keytab_name;
krb5_keytab keytab;
TALLOC_CTX *mem_ctx;
if (cred->keytab_obtained >= (MAX(cred->principal_obtained,
cred->username_obtained))) {
*_ktc = cred->keytab;
return 0;
}
if (cli_credentials_is_anonymous(cred)) {
return EINVAL;
}
ret = cli_credentials_get_krb5_context(cred, lp_ctx,
&smb_krb5_context);
if (ret) {
return ret;
}
mem_ctx = talloc_new(cred);
if (!mem_ctx) {
return ENOMEM;
}
ret = smb_krb5_create_memory_keytab(mem_ctx,
smb_krb5_context->krb5_context,
cli_credentials_get_password(cred),
cli_credentials_get_username(cred),
cli_credentials_get_realm(cred),
cli_credentials_get_kvno(cred),
&keytab, &keytab_name);
if (ret) {
talloc_free(mem_ctx);
return ret;
}
ret = smb_krb5_get_keytab_container(mem_ctx, smb_krb5_context,
keytab, keytab_name, &ktc);
if (ret) {
talloc_free(mem_ctx);
return ret;
}
cred->keytab_obtained = (MAX(cred->principal_obtained,
cred->username_obtained));
/* We make this keytab up based on a password. Therefore
* match-by-key is acceptable, we can't match on the wrong
* principal */
ktc->password_based = true;
talloc_steal(cred, ktc);
cred->keytab = ktc;
*_ktc = cred->keytab;
talloc_free(mem_ctx);
return ret;
}
static int cli_credentials_new_ccache(struct cli_credentials *cred,
struct loadparm_context *lp_ctx,
char *ccache_name,
struct ccache_container **_ccc,
const char **error_string)
{
bool must_free_cc_name = false;
krb5_error_code ret;
struct ccache_container *ccc = talloc(cred, struct ccache_container);
if (!ccc) {
return ENOMEM;
}
ret = cli_credentials_get_krb5_context(cred, lp_ctx,
&ccc->smb_krb5_context);
if (ret) {
talloc_free(ccc);
(*error_string) = talloc_asprintf(cred, "Failed to get krb5_context: %s",
error_message(ret));
return ret;
}
if (!talloc_reference(ccc, ccc->smb_krb5_context)) {
talloc_free(ccc);
(*error_string) = strerror(ENOMEM);
return ENOMEM;
}
if (!ccache_name) {
must_free_cc_name = true;
if (lpcfg_parm_bool(lp_ctx, NULL, "credentials", "krb5_cc_file", false)) {
ccache_name = talloc_asprintf(ccc, "FILE:/tmp/krb5_cc_samba_%u_%p",
(unsigned int)getpid(), ccc);
} else {
ccache_name = talloc_asprintf(ccc, "MEMORY:%p",
ccc);
}
if (!ccache_name) {
talloc_free(ccc);
(*error_string) = strerror(ENOMEM);
return ENOMEM;
}
}
ret = krb5_cc_resolve(ccc->smb_krb5_context->krb5_context, ccache_name,
&ccc->ccache);
if (ret) {
(*error_string) = talloc_asprintf(cred, "failed to resolve a krb5 ccache (%s): %s\n",
ccache_name,
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context,
ret, ccc));
talloc_free(ccache_name);
talloc_free(ccc);
return ret;
}
if (strncasecmp(ccache_name, "MEMORY:", 7) == 0) {
talloc_set_destructor(ccc, free_mccache);
} else {
talloc_set_destructor(ccc, free_dccache);
}
if (must_free_cc_name) {
talloc_free(ccache_name);
}
*_ccc = ccc;
return 0;
}
_PUBLIC_ int cli_credentials_set_ccache(struct cli_credentials *cred,
struct loadparm_context *lp_ctx,
const char *name,
enum credentials_obtained obtained,
const char **error_string)
{
krb5_error_code ret;
krb5_principal princ;
struct ccache_container *ccc;
if (cred->ccache_obtained > obtained) {
return 0;
}
ccc = talloc(cred, struct ccache_container);
if (!ccc) {
(*error_string) = error_message(ENOMEM);
return ENOMEM;
}
ret = cli_credentials_get_krb5_context(cred, lp_ctx,
&ccc->smb_krb5_context);
if (ret) {
(*error_string) = error_message(ret);
talloc_free(ccc);
return ret;
}
if (!talloc_reference(ccc, ccc->smb_krb5_context)) {
talloc_free(ccc);
(*error_string) = error_message(ENOMEM);
return ENOMEM;
}
if (name) {
ret = krb5_cc_resolve(ccc->smb_krb5_context->krb5_context, name, &ccc->ccache);
if (ret) {
(*error_string) = talloc_asprintf(cred, "failed to read krb5 ccache: %s: %s\n",
name,
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context,
ret, ccc));
talloc_free(ccc);
return ret;
}
} else {
ret = krb5_cc_default(ccc->smb_krb5_context->krb5_context, &ccc->ccache);
if (ret) {
(*error_string) = talloc_asprintf(cred, "failed to read default krb5 ccache: %s\n",
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context,
ret, ccc));
talloc_free(ccc);
return ret;
}
}
talloc_set_destructor(ccc, free_dccache);
ret = krb5_cc_get_principal(ccc->smb_krb5_context->krb5_context, ccc->ccache, &princ);
if (ret == 0) {
krb5_free_principal(ccc->smb_krb5_context->krb5_context, princ);
ret = cli_credentials_set_from_ccache(cred, ccc, obtained, error_string);
if (ret) {
(*error_string) = error_message(ret);
return ret;
}
cred->ccache = ccc;
cred->ccache_obtained = obtained;
talloc_steal(cred, ccc);
cli_credentials_invalidate_client_gss_creds(cred, cred->ccache_obtained);
return 0;
}
return 0;
}
int cli_credentials_get_server_gss_creds(struct cli_credentials *cred,
struct gssapi_creds_container **_gcc)
{
int ret = 0;
OM_uint32 maj_stat, min_stat;
struct gssapi_creds_container *gcc;
struct keytab_container *ktc;
struct smb_krb5_context *smb_krb5_context;
TALLOC_CTX *mem_ctx;
krb5_principal princ;
if (cred->server_gss_creds_obtained >= (MAX(cred->keytab_obtained,
MAX(cred->principal_obtained,
cred->username_obtained)))) {
*_gcc = cred->server_gss_creds;
return 0;
}
ret = cli_credentials_get_krb5_context(cred, &smb_krb5_context);
if (ret) {
return ret;
}
ret = cli_credentials_get_keytab(cred,
&ktc);
if (ret) {
DEBUG(1, ("Failed to get keytab for GSSAPI server: %s\n", error_message(ret)));
return ret;
}
mem_ctx = talloc_new(cred);
if (!mem_ctx) {
return ENOMEM;
}
ret = principal_from_credentials(mem_ctx, cred, smb_krb5_context, &princ);
if (ret) {
DEBUG(1,("cli_credentials_get_server_gss_creds: makeing krb5 principal failed (%s)\n",
smb_get_krb5_error_message(smb_krb5_context->krb5_context,
ret, mem_ctx)));
talloc_free(mem_ctx);
return ret;
}
gcc = talloc(cred, struct gssapi_creds_container);
if (!gcc) {
talloc_free(mem_ctx);
return ENOMEM;
}
/* This creates a GSSAPI cred_id_t with the principal and keytab set */
maj_stat = gss_krb5_import_cred(&min_stat, NULL, princ, ktc->keytab,
&gcc->creds);
if (maj_stat) {
if (min_stat) {
ret = min_stat;
} else {
ret = EINVAL;
}
}
if (ret == 0) {
cred->server_gss_creds_obtained = cred->keytab_obtained;
talloc_set_destructor(gcc, free_gssapi_creds);
cred->server_gss_creds = gcc;
*_gcc = gcc;
}
talloc_free(mem_ctx);
return ret;
}
int cli_credentials_set_ccache(struct cli_credentials *cred,
const char *name,
enum credentials_obtained obtained)
{
krb5_error_code ret;
krb5_principal princ;
struct ccache_container *ccc;
if (cred->ccache_obtained > obtained) {
return 0;
}
ccc = talloc(cred, struct ccache_container);
if (!ccc) {
return ENOMEM;
}
ret = cli_credentials_get_krb5_context(cred, &ccc->smb_krb5_context);
if (ret) {
talloc_free(ccc);
return ret;
}
talloc_reference(ccc, ccc->smb_krb5_context);
if (name) {
ret = krb5_cc_resolve(ccc->smb_krb5_context->krb5_context, name, &ccc->ccache);
if (ret) {
DEBUG(1,("failed to read krb5 ccache: %s: %s\n",
name,
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccc);
return ret;
}
} else {
ret = krb5_cc_default(ccc->smb_krb5_context->krb5_context, &ccc->ccache);
if (ret) {
DEBUG(3,("failed to read default krb5 ccache: %s\n",
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccc);
return ret;
}
}
talloc_set_destructor(ccc, free_dccache);
ret = krb5_cc_get_principal(ccc->smb_krb5_context->krb5_context, ccc->ccache, &princ);
if (ret) {
DEBUG(3,("failed to get principal from default ccache: %s\n",
smb_get_krb5_error_message(ccc->smb_krb5_context->krb5_context, ret, ccc)));
talloc_free(ccc);
return ret;
}
krb5_free_principal(ccc->smb_krb5_context->krb5_context, princ);
cred->ccache = ccc;
talloc_steal(cred, ccc);
ret = cli_credentials_set_from_ccache(cred, obtained);
if (ret) {
return ret;
}
return 0;
}
static NTSTATUS gensec_krb5_start(struct gensec_security *gensec_security, bool gssapi)
{
krb5_error_code ret;
struct gensec_krb5_state *gensec_krb5_state;
struct cli_credentials *creds;
const struct tsocket_address *tlocal_addr, *tremote_addr;
krb5_address my_krb5_addr, peer_krb5_addr;
creds = gensec_get_credentials(gensec_security);
if (!creds) {
return NT_STATUS_INVALID_PARAMETER;
}
gensec_krb5_state = talloc(gensec_security, struct gensec_krb5_state);
if (!gensec_krb5_state) {
return NT_STATUS_NO_MEMORY;
}
gensec_security->private_data = gensec_krb5_state;
gensec_krb5_state->smb_krb5_context = NULL;
gensec_krb5_state->auth_context = NULL;
gensec_krb5_state->ticket = NULL;
ZERO_STRUCT(gensec_krb5_state->enc_ticket);
gensec_krb5_state->keyblock = NULL;
gensec_krb5_state->gssapi = gssapi;
talloc_set_destructor(gensec_krb5_state, gensec_krb5_destroy);
if (cli_credentials_get_krb5_context(creds,
gensec_security->settings->lp_ctx, &gensec_krb5_state->smb_krb5_context)) {
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
ret = krb5_auth_con_init(gensec_krb5_state->smb_krb5_context->krb5_context, &gensec_krb5_state->auth_context);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_auth_con_init failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
ret = krb5_auth_con_setflags(gensec_krb5_state->smb_krb5_context->krb5_context,
gensec_krb5_state->auth_context,
KRB5_AUTH_CONTEXT_DO_SEQUENCE);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_auth_con_setflags failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
tlocal_addr = gensec_get_local_address(gensec_security);
if (tlocal_addr) {
ssize_t socklen;
struct sockaddr_storage ss;
socklen = tsocket_address_bsd_sockaddr(tlocal_addr,
(struct sockaddr *) &ss,
sizeof(struct sockaddr_storage));
if (socklen < 0) {
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
(const struct sockaddr *) &ss, &my_krb5_addr);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
}
tremote_addr = gensec_get_remote_address(gensec_security);
if (tremote_addr) {
ssize_t socklen;
struct sockaddr_storage ss;
socklen = tsocket_address_bsd_sockaddr(tremote_addr,
(struct sockaddr *) &ss,
sizeof(struct sockaddr_storage));
if (socklen < 0) {
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
(const struct sockaddr *) &ss, &peer_krb5_addr);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
}
ret = krb5_auth_con_setaddrs(gensec_krb5_state->smb_krb5_context->krb5_context,
gensec_krb5_state->auth_context,
tlocal_addr ? &my_krb5_addr : NULL,
tremote_addr ? &peer_krb5_addr : NULL);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_auth_con_setaddrs failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
return NT_STATUS_OK;
}
static NTSTATUS gensec_krb5_start(struct gensec_security *gensec_security, bool gssapi)
{
krb5_error_code ret;
struct gensec_krb5_state *gensec_krb5_state;
struct cli_credentials *creds;
const struct socket_address *my_addr, *peer_addr;
krb5_address my_krb5_addr, peer_krb5_addr;
creds = gensec_get_credentials(gensec_security);
if (!creds) {
return NT_STATUS_INVALID_PARAMETER;
}
gensec_krb5_state = talloc(gensec_security, struct gensec_krb5_state);
if (!gensec_krb5_state) {
return NT_STATUS_NO_MEMORY;
}
gensec_security->private_data = gensec_krb5_state;
gensec_krb5_state->smb_krb5_context = NULL;
gensec_krb5_state->auth_context = NULL;
gensec_krb5_state->ticket = NULL;
ZERO_STRUCT(gensec_krb5_state->enc_ticket);
gensec_krb5_state->keyblock = NULL;
gensec_krb5_state->session_key = data_blob(NULL, 0);
gensec_krb5_state->pac = data_blob(NULL, 0);
gensec_krb5_state->gssapi = gssapi;
talloc_set_destructor(gensec_krb5_state, gensec_krb5_destroy);
if (cli_credentials_get_krb5_context(creds,
gensec_security->event_ctx,
gensec_security->settings->lp_ctx, &gensec_krb5_state->smb_krb5_context)) {
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
ret = krb5_auth_con_init(gensec_krb5_state->smb_krb5_context->krb5_context, &gensec_krb5_state->auth_context);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_auth_con_init failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
ret = krb5_auth_con_setflags(gensec_krb5_state->smb_krb5_context->krb5_context,
gensec_krb5_state->auth_context,
KRB5_AUTH_CONTEXT_DO_SEQUENCE);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_auth_con_setflags failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
my_addr = gensec_get_my_addr(gensec_security);
if (my_addr && my_addr->sockaddr) {
ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
my_addr->sockaddr, &my_krb5_addr);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
}
peer_addr = gensec_get_peer_addr(gensec_security);
if (peer_addr && peer_addr->sockaddr) {
ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
peer_addr->sockaddr, &peer_krb5_addr);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
}
ret = krb5_auth_con_setaddrs(gensec_krb5_state->smb_krb5_context->krb5_context,
gensec_krb5_state->auth_context,
my_addr ? &my_krb5_addr : NULL,
peer_addr ? &peer_krb5_addr : NULL);
if (ret) {
DEBUG(1,("gensec_krb5_start: krb5_auth_con_setaddrs failed (%s)\n",
smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
ret, gensec_krb5_state)));
talloc_free(gensec_krb5_state);
return NT_STATUS_INTERNAL_ERROR;
}
return NT_STATUS_OK;
}
/* Get the keytab (actually, a container containing the krb5_keytab)
* attached to this context. If this hasn't been done or set before,
* it will be generated from the password.
*/
_PUBLIC_ int cli_credentials_get_keytab(struct cli_credentials *cred,
struct loadparm_context *lp_ctx,
struct keytab_container **_ktc)
{
krb5_error_code ret;
struct keytab_container *ktc;
struct smb_krb5_context *smb_krb5_context;
const char *keytab_name;
krb5_keytab keytab;
TALLOC_CTX *mem_ctx;
const char *username = cli_credentials_get_username(cred);
const char *realm = cli_credentials_get_realm(cred);
const char *error_string;
const char *salt_principal;
if (cred->keytab_obtained >= (MAX(cred->principal_obtained,
cred->username_obtained))) {
*_ktc = cred->keytab;
return 0;
}
if (cli_credentials_is_anonymous(cred)) {
return EINVAL;
}
ret = cli_credentials_get_krb5_context(cred, lp_ctx,
&smb_krb5_context);
if (ret) {
return ret;
}
mem_ctx = talloc_new(cred);
if (!mem_ctx) {
return ENOMEM;
}
/*
* FIXME: Currently there is no better way than to create the correct
* salt principal by checking if the username ends with a '$'. It would
* be better if it is part of the credentials.
*/
ret = smb_krb5_create_salt_principal(mem_ctx,
username,
realm,
&salt_principal,
&error_string);
if (ret) {
talloc_free(mem_ctx);
return ret;
}
ret = smb_krb5_create_memory_keytab(mem_ctx,
smb_krb5_context->krb5_context,
cli_credentials_get_password(cred),
username,
realm,
salt_principal,
cli_credentials_get_kvno(cred),
&keytab,
&keytab_name);
if (ret) {
talloc_free(mem_ctx);
return ret;
}
ret = smb_krb5_get_keytab_container(mem_ctx, smb_krb5_context,
keytab, keytab_name, &ktc);
if (ret) {
talloc_free(mem_ctx);
return ret;
}
cred->keytab_obtained = (MAX(cred->principal_obtained,
cred->username_obtained));
/* We make this keytab up based on a password. Therefore
* match-by-key is acceptable, we can't match on the wrong
* principal */
ktc->password_based = true;
talloc_steal(cred, ktc);
cred->keytab = ktc;
*_ktc = cred->keytab;
talloc_free(mem_ctx);
return ret;
}
