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-rw-r--r--server/providers/krb5/krb5_auth.c62
-rw-r--r--server/providers/krb5/krb5_auth.h8
-rw-r--r--server/providers/krb5/krb5_child.c41
-rw-r--r--server/providers/krb5/krb5_common.c155
-rw-r--r--server/providers/krb5/krb5_common.h20
-rw-r--r--server/providers/krb5/krb5_init.c86
-rw-r--r--server/providers/krb5/krb5_utils.c26
7 files changed, 273 insertions, 125 deletions
diff --git a/server/providers/krb5/krb5_auth.c b/server/providers/krb5/krb5_auth.c
index 1e689d93..1d699a87 100644
--- a/server/providers/krb5/krb5_auth.c
+++ b/server/providers/krb5/krb5_auth.c
@@ -210,7 +210,10 @@ static errno_t activate_child_timeout_handler(struct krb5child_req *kr)
struct timeval tv;
tv = tevent_timeval_current();
- tv = tevent_timeval_add(&tv, kr->krb5_ctx->auth_timeout, 0);
+ tv = tevent_timeval_add(&tv,
+ dp_opt_get_int(kr->krb5_ctx->opts,
+ KRB5_AUTH_TIMEOUT),
+ 0);
kr->timeout_handler = tevent_add_timer(kr->req->be_ctx->ev, kr, tv,
krb5_child_timeout, kr);
if (kr->timeout_handler == NULL) {
@@ -278,7 +281,10 @@ static errno_t krb5_setup(struct be_req *req, struct krb5child_req **krb5_req,
kr->krb5_ctx = krb5_ctx;
kr->homedir = homedir;
- kr->ccname = expand_ccname_template(kr, kr, krb5_ctx->ccname_template);
+ kr->ccname = expand_ccname_template(kr, kr,
+ dp_opt_get_cstring(krb5_ctx->opts,
+ KRB5_CCNAME_TMPL)
+ );
if (kr->ccname == NULL) {
DEBUG(1, ("expand_ccname_template failed.\n"));
err = EINVAL;
@@ -736,6 +742,7 @@ static void get_user_upn_done(void *pvt, int err, struct ldb_result *res)
struct pam_data *pd;
int pam_status=PAM_SYSTEM_ERR;
const char *homedir = NULL;
+ const char *dummy;
pd = talloc_get_type(be_req->req_data, struct pam_data);
krb5_ctx = get_krb5_ctx(be_req);
@@ -760,9 +767,9 @@ static void get_user_upn_done(void *pvt, int err, struct ldb_result *res)
pd->upn = ldb_msg_find_attr_as_string(res->msgs[0], SYSDB_UPN, NULL);
if (pd->upn == NULL) {
/* NOTE: this is a hack, works only in some environments */
- if (krb5_ctx->realm != NULL) {
- pd->upn = talloc_asprintf(be_req, "%s@%s", pd->user,
- krb5_ctx->realm);
+ dummy = dp_opt_get_cstring(krb5_ctx->opts, KRB5_REALM);
+ if (dummy != NULL) {
+ pd->upn = talloc_asprintf(be_req, "%s@%s", pd->user, dummy);
if (pd->upn == NULL) {
DEBUG(1, ("failed to build simple upn.\n"));
}
@@ -829,6 +836,7 @@ static void krb5_pam_handler_done(struct tevent_req *req)
char *password = NULL;
char *env = NULL;
int dp_err = DP_ERR_FATAL;
+ const char *dummy;
pd->pam_status = PAM_SYSTEM_ERR;
talloc_free(kr);
@@ -877,26 +885,34 @@ static void krb5_pam_handler_done(struct tevent_req *req)
}
if (*msg_status == PAM_SUCCESS && pd->cmd == SSS_PAM_AUTHENTICATE) {
- env = talloc_asprintf(pd, "%s=%s", SSSD_KRB5_REALM, krb5_ctx->realm);
- if (env == NULL) {
- DEBUG(1, ("talloc_asprintf failed.\n"));
- goto done;
- }
- ret = pam_add_response(pd, PAM_ENV_ITEM, strlen(env)+1, (uint8_t *) env);
- if (ret != EOK) {
- DEBUG(1, ("pam_add_response failed.\n"));
- goto done;
+ dummy = dp_opt_get_cstring(krb5_ctx->opts, KRB5_REALM);
+ if (dummy != NULL) {
+ env = talloc_asprintf(pd, "%s=%s", SSSD_KRB5_REALM, dummy);
+ if (env == NULL) {
+ DEBUG(1, ("talloc_asprintf failed.\n"));
+ goto done;
+ }
+ ret = pam_add_response(pd, PAM_ENV_ITEM, strlen(env)+1,
+ (uint8_t *) env);
+ if (ret != EOK) {
+ DEBUG(1, ("pam_add_response failed.\n"));
+ goto done;
+ }
}
- env = talloc_asprintf(pd, "%s=%s", SSSD_KRB5_KDC, krb5_ctx->kdcip);
- if (env == NULL) {
- DEBUG(1, ("talloc_asprintf failed.\n"));
- goto done;
- }
- ret = pam_add_response(pd, PAM_ENV_ITEM, strlen(env)+1, (uint8_t *) env);
- if (ret != EOK) {
- DEBUG(1, ("pam_add_response failed.\n"));
- goto done;
+ dummy = dp_opt_get_cstring(krb5_ctx->opts, KRB5_KDC);
+ if (dummy != NULL) {
+ env = talloc_asprintf(pd, "%s=%s", SSSD_KRB5_KDC, dummy);
+ if (env == NULL) {
+ DEBUG(1, ("talloc_asprintf failed.\n"));
+ goto done;
+ }
+ ret = pam_add_response(pd, PAM_ENV_ITEM, strlen(env)+1,
+ (uint8_t *) env);
+ if (ret != EOK) {
+ DEBUG(1, ("pam_add_response failed.\n"));
+ goto done;
+ }
}
}
diff --git a/server/providers/krb5/krb5_auth.h b/server/providers/krb5/krb5_auth.h
index 9e9142cf..95647e31 100644
--- a/server/providers/krb5/krb5_auth.h
+++ b/server/providers/krb5/krb5_auth.h
@@ -74,13 +74,7 @@ struct krb5_ctx {
char* k4_cache_name;
action_type action;
-
- char *kdcip;
- char *realm;
- char *changepw_principle;
- char *ccache_dir;
- char *ccname_template;
- int auth_timeout;
+ struct dp_option *opts;
int child_debug_fd;
};
diff --git a/server/providers/krb5/krb5_child.c b/server/providers/krb5/krb5_child.c
index 4e681b97..e67ff889 100644
--- a/server/providers/krb5/krb5_child.c
+++ b/server/providers/krb5/krb5_child.c
@@ -36,6 +36,41 @@
#define IN_BUF_SIZE 512
+struct krb5_child_ctx {
+ /* opts taken from kinit */
+ /* in seconds */
+ krb5_deltat starttime;
+ krb5_deltat lifetime;
+ krb5_deltat rlife;
+
+ int forwardable;
+ int proxiable;
+ int addresses;
+
+ int not_forwardable;
+ int not_proxiable;
+ int no_addresses;
+
+ int verbose;
+
+ char* principal_name;
+ char* service_name;
+ char* keytab_name;
+ char* k5_cache_name;
+ char* k4_cache_name;
+
+ action_type action;
+
+ char *kdcip;
+ char *realm;
+ char *changepw_principle;
+ char *ccache_dir;
+ char *ccname_template;
+ int auth_timeout;
+
+ int child_debug_fd;
+};
+
struct krb5_req {
krb5_context ctx;
krb5_ccache cc;
@@ -49,7 +84,7 @@ struct krb5_req {
struct be_req *req;
struct pam_data *pd;
- struct krb5_ctx *krb5_ctx;
+ struct krb5_child_ctx *krb5_ctx;
errno_t (*child_req)(int fd, struct krb5_req *kr);
char *ccname;
@@ -522,7 +557,7 @@ static int krb5_cleanup(void *ptr)
krb5_free_context(kr->ctx);
if (kr->krb5_ctx != NULL) {
- memset(kr->krb5_ctx, 0, sizeof(struct krb5_ctx));
+ memset(kr->krb5_ctx, 0, sizeof(struct krb5_child_ctx));
}
memset(kr, 0, sizeof(struct krb5_req));
@@ -543,7 +578,7 @@ static int krb5_setup(struct pam_data *pd, const char *user_princ_str,
}
talloc_set_destructor((TALLOC_CTX *) kr, krb5_cleanup);
- kr->krb5_ctx = talloc_zero(kr, struct krb5_ctx);
+ kr->krb5_ctx = talloc_zero(kr, struct krb5_child_ctx);
if (kr->krb5_ctx == NULL) {
DEBUG(1, ("talloc failed.\n"));
kerr = ENOMEM;
diff --git a/server/providers/krb5/krb5_common.c b/server/providers/krb5/krb5_common.c
new file mode 100644
index 00000000..a9d00ef6
--- /dev/null
+++ b/server/providers/krb5/krb5_common.c
@@ -0,0 +1,155 @@
+/*
+ SSSD
+
+ Kerberos Provider Common Functions
+
+ Authors:
+ Sumit Bose <sbose@redhat.com>
+
+ Copyright (C) 2008-2009 Red Hat
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "providers/dp_backend.h"
+#include "providers/krb5/krb5_common.h"
+
+struct dp_option default_krb5_opts[] = {
+ { "krb5_kdcip", DP_OPT_STRING, NULL_STRING, NULL_STRING },
+ { "krb5_realm", DP_OPT_STRING, NULL_STRING, NULL_STRING },
+ { "krb5_ccachedir", DP_OPT_STRING, { "/tmp" }, NULL_STRING },
+ { "krb5_ccname_tmpl", DP_OPT_STRING, { "FILE:%d/krb5cc_%U_XXXXXX" }, NULL_STRING},
+ { "krb5_changepw_principle", DP_OPT_STRING, { "kadmin/changepw" }, NULL_STRING },
+ { "krb5_auth_timeout", DP_OPT_NUMBER, { .number = 15 }, NULL_NUMBER },
+};
+
+errno_t check_and_export_options(struct dp_option *opts,
+ struct sss_domain_info *dom)
+{
+ int ret;
+ char *value;
+ const char *realm;
+ const char *dummy;
+ struct stat stat_buf;
+
+ dummy = dp_opt_get_cstring(opts, KRB5_KDC);
+ if (dummy == NULL) {
+ DEBUG(1, ("No KDC configured, "
+ "using kerberos defaults from /etc/krb5.conf"));
+ } else {
+ ret = setenv(SSSD_KRB5_KDC, dummy, 1);
+ if (ret != EOK) {
+ DEBUG(2, ("setenv %s failed, authentication might fail.\n",
+ SSSD_KRB5_KDC));
+ }
+ }
+
+ realm = dp_opt_get_cstring(opts, KRB5_REALM);
+ if (realm == NULL) {
+ ret = dp_opt_set_string(opts, KRB5_REALM, dom->name);
+ if (ret != EOK) {
+ DEBUG(1, ("dp_opt_set_string failed.\n"));
+ return ret;
+ }
+ realm = dom->name;
+ }
+ ret = setenv(SSSD_KRB5_REALM, realm, 1);
+ if (ret != EOK) {
+ DEBUG(2, ("setenv %s failed, authentication might fail.\n",
+ SSSD_KRB5_REALM));
+ }
+
+ dummy = dp_opt_get_cstring(opts, KRB5_CCACHEDIR);
+ ret = lstat(dummy, &stat_buf);
+ if (ret != EOK) {
+ DEBUG(1, ("lstat for [%s] failed: [%d][%s].\n", dummy, errno,
+ strerror(errno)));
+ return ret;
+ }
+ if ( !S_ISDIR(stat_buf.st_mode) ) {
+ DEBUG(1, ("Value of krb5ccache_dir [%s] is not a directory.\n", dummy));
+ return EINVAL;
+ }
+
+ dummy = dp_opt_get_cstring(opts, KRB5_CCNAME_TMPL);
+ if (dummy == NULL) {
+ DEBUG(1, ("Missing credential cache name template.\n"));
+ return EINVAL;
+ }
+ if (dummy[0] != '/' && strncmp(dummy, "FILE:", 5) != 0) {
+ DEBUG(1, ("Currently only file based credential caches are supported "
+ "and krb5ccname_template must start with '/' or 'FILE:'\n"));
+ return EINVAL;
+ }
+
+ dummy = dp_opt_get_cstring(opts, KRB5_CHANGEPW_PRINC);
+ if (dummy == NULL) {
+ DEBUG(1, ("Missing change password principle.\n"));
+ return EINVAL;
+ }
+ if (strchr(dummy, '@') == NULL) {
+ value = talloc_asprintf(opts, "%s@%s", dummy, realm);
+ if (value == NULL) {
+ DEBUG(7, ("talloc_asprintf failed.\n"));
+ return ENOMEM;
+ }
+ ret = dp_opt_set_string(opts, KRB5_CHANGEPW_PRINC, value);
+ if (ret != EOK) {
+ DEBUG(1, ("dp_opt_set_string failed.\n"));
+ return ret;
+ }
+ dummy = value;
+ }
+
+ ret = setenv(SSSD_KRB5_CHANGEPW_PRINCIPLE, dummy, 1);
+ if (ret != EOK) {
+ DEBUG(2, ("setenv %s failed, password change might fail.\n",
+ SSSD_KRB5_CHANGEPW_PRINCIPLE));
+ }
+
+ return EOK;
+}
+
+errno_t krb5_get_options(TALLOC_CTX *memctx, struct confdb_ctx *cdb,
+ const char *conf_path, struct dp_option **_opts)
+{
+ int ret;
+ struct dp_option *opts;
+
+ opts = talloc_zero(memctx, struct dp_option);
+ if (opts == NULL) {
+ DEBUG(1, ("talloc_zero failed.\n"));
+ return ENOMEM;
+ }
+
+ ret = dp_get_options(opts, cdb, conf_path, default_krb5_opts,
+ KRB5_OPTS, &opts);
+ if (ret != EOK) {
+ DEBUG(1, ("dp_get_options failed.\n"));
+ goto done;
+ }
+
+ *_opts = opts;
+ ret = EOK;
+
+done:
+ if (ret != EOK) {
+ talloc_zfree(opts);
+ }
+
+ return ret;
+}
diff --git a/server/providers/krb5/krb5_common.h b/server/providers/krb5/krb5_common.h
index 64e43605..5d784a55 100644
--- a/server/providers/krb5/krb5_common.h
+++ b/server/providers/krb5/krb5_common.h
@@ -34,7 +34,27 @@
#include <krb5.h>
#endif
+#include "providers/dp_backend.h"
+#include "util/util.h"
+
#define SSSD_KRB5_KDC "SSSD_KRB5_KDC"
#define SSSD_KRB5_REALM "SSSD_KRB5_REALM"
+#define SSSD_KRB5_CHANGEPW_PRINCIPLE "SSSD_KRB5_CHANGEPW_PRINCIPLE"
+
+enum krb5_opts {
+ KRB5_KDC = 0,
+ KRB5_REALM,
+ KRB5_CCACHEDIR,
+ KRB5_CCNAME_TMPL,
+ KRB5_CHANGEPW_PRINC,
+ KRB5_AUTH_TIMEOUT,
+
+ KRB5_OPTS
+};
+
+errno_t check_and_export_options(struct dp_option *opts,
+ struct sss_domain_info *dom);
+errno_t krb5_get_options(TALLOC_CTX *memctx, struct confdb_ctx *cdb,
+ const char *conf_path, struct dp_option **_opts);
#endif /* __KRB5_COMMON_H__ */
diff --git a/server/providers/krb5/krb5_init.c b/server/providers/krb5/krb5_init.c
index 676d078d..26cf5e3b 100644
--- a/server/providers/krb5/krb5_init.c
+++ b/server/providers/krb5/krb5_init.c
@@ -27,6 +27,7 @@
#include <fcntl.h>
#include <sys/stat.h>
#include "providers/krb5/krb5_auth.h"
+#include "providers/krb5/krb5_common.h"
struct bet_ops krb5_auth_ops = {
.handler = krb5_pam_handler,
@@ -43,11 +44,8 @@ int sssm_krb5_auth_init(struct be_ctx *bectx,
void **pvt_auth_data)
{
struct krb5_ctx *ctx = NULL;
- char *value = NULL;
- int int_value;
int ret;
struct tevent_signal *sige;
- struct stat stat_buf;
unsigned v;
FILE *debug_filep;
@@ -59,91 +57,17 @@ int sssm_krb5_auth_init(struct be_ctx *bectx,
ctx->action = INIT_PW;
- ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
- CONFDB_KRB5_KDCIP, NULL, &value);
- if (ret != EOK) goto fail;
- if (value == NULL) {
- DEBUG(2, ("Missing krb5KDCIP, authentication might fail.\n"));
- } else {
- ret = setenv(SSSD_KRB5_KDC, value, 1);
- if (ret != EOK) {
- DEBUG(2, ("setenv %s failed, authentication might fail.\n",
- SSSD_KRB5_KDC));
- }
- }
- ctx->kdcip = value;
-
- ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
- CONFDB_KRB5_REALM, NULL, &value);
- if (ret != EOK) goto fail;
- if (value == NULL) {
- DEBUG(4, ("Missing krb5REALM authentication might fail.\n"));
- } else {
- ret = setenv(SSSD_KRB5_REALM, value, 1);
- if (ret != EOK) {
- DEBUG(2, ("setenv %s failed, authentication might fail.\n",
- SSSD_KRB5_REALM));
- }
- }
- ctx->realm = value;
-
- ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
- CONFDB_KRB5_CCACHEDIR, "/tmp", &value);
- if (ret != EOK) goto fail;
- ret = lstat(value, &stat_buf);
+ ret = krb5_get_options(ctx, bectx->cdb, bectx->conf_path, &ctx->opts);
if (ret != EOK) {
- DEBUG(1, ("lstat for [%s] failed: [%d][%s].\n", value, errno,
- strerror(errno)));
- goto fail;
- }
- if ( !S_ISDIR(stat_buf.st_mode) ) {
- DEBUG(1, ("Value of krb5ccache_dir [%s] is not a directory.\n", value));
+ DEBUG(1, ("krb5_get_options failed.\n"));
goto fail;
}
- ctx->ccache_dir = value;
-
- ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
- CONFDB_KRB5_CCNAME_TMPL,
- "FILE:%d/krb5cc_%U_XXXXXX",
- &value);
- if (ret != EOK) goto fail;
- if (value[0] != '/' && strncmp(value, "FILE:", 5) != 0) {
- DEBUG(1, ("Currently only file based credential caches are supported "
- "and krb5ccname_template must start with '/' or 'FILE:'\n"));
- goto fail;
- }
- ctx->ccname_template = value;
-
- ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path,
- CONFDB_KRB5_CHANGEPW_PRINC,
- "kadmin/changepw",
- &value);
- if (ret != EOK) goto fail;
- if (strchr(value, '@') == NULL) {
- value = talloc_asprintf_append(value, "@%s", ctx->realm);
- if (value == NULL) {
- DEBUG(7, ("talloc_asprintf_append failed.\n"));
- goto fail;
- }
- }
- ctx->changepw_principle = value;
- ret = setenv(SSSD_KRB5_CHANGEPW_PRINCIPLE, ctx->changepw_principle, 1);
+ ret = check_and_export_options(ctx->opts, bectx->domain);
if (ret != EOK) {
- DEBUG(2, ("setenv %s failed, password change might fail.\n",
- SSSD_KRB5_CHANGEPW_PRINCIPLE));
- }
-
- ret = confdb_get_int(bectx->cdb, ctx, bectx->conf_path,
- CONFDB_KRB5_AUTH_TIMEOUT, 15, &int_value);
- if (ret != EOK) goto fail;
- if (int_value <= 0) {
- DEBUG(4, ("krb5auth_timeout has to be a positive value.\n"));
+ DEBUG(1, ("check_and_export_options failed.\n"));
goto fail;
}
- ctx->auth_timeout = int_value;
-
-/* TODO: set options */
sige = tevent_add_signal(bectx->ev, ctx, SIGCHLD, SA_SIGINFO,
krb5_child_sig_handler, NULL);
diff --git a/server/providers/krb5/krb5_utils.c b/server/providers/krb5/krb5_utils.c
index 68254abc..489030af 100644
--- a/server/providers/krb5/krb5_utils.c
+++ b/server/providers/krb5/krb5_utils.c
@@ -35,6 +35,12 @@ char *expand_ccname_template(TALLOC_CTX *mem_ctx, struct krb5child_req *kr,
char *p;
char *n;
char *result = NULL;
+ const char *dummy;
+
+ if (template == NULL) {
+ DEBUG(1, ("Missing template.\n"));
+ return NULL;
+ }
copy = talloc_strdup(mem_ctx, template);
if (copy == NULL) {
@@ -78,7 +84,7 @@ char *expand_ccname_template(TALLOC_CTX *mem_ctx, struct krb5child_req *kr,
break;
case 'p':
if (kr->pd->upn == NULL) {
- DEBUG(1, ("Cannot expand user principal name template "
+ DEBUG(1, ("Cannot expand user principle name template "
"because upn is empty.\n"));
return NULL;
}
@@ -88,13 +94,12 @@ char *expand_ccname_template(TALLOC_CTX *mem_ctx, struct krb5child_req *kr,
result = talloc_asprintf_append(result, "%s%%", p);
break;
case 'r':
- if (kr->krb5_ctx->realm == NULL) {
- DEBUG(1, ("Cannot expand realm template "
- "because value is not available.\n"));
+ dummy = dp_opt_get_string(kr->krb5_ctx->opts, KRB5_REALM);
+ if (dummy == NULL) {
+ DEBUG(1, ("Missing kerberos realm.\n"));
return NULL;
}
- result = talloc_asprintf_append(result, "%s%s", p,
- kr->krb5_ctx->realm);
+ result = talloc_asprintf_append(result, "%s%s", p, dummy);
break;
case 'h':
if (kr->homedir == NULL) {
@@ -105,13 +110,12 @@ char *expand_ccname_template(TALLOC_CTX *mem_ctx, struct krb5child_req *kr,
result = talloc_asprintf_append(result, "%s%s", p, kr->homedir);
break;
case 'd':
- if (kr->krb5_ctx->ccache_dir == NULL) {
- DEBUG(1, ("Cannot expand ccache directory template "
- "because value is not available.\n"));
+ dummy = dp_opt_get_string(kr->krb5_ctx->opts, KRB5_CCACHEDIR);
+ if (dummy == NULL) {
+ DEBUG(1, ("Missing credential cache directory.\n"));
return NULL;
}
- result = talloc_asprintf_append(result, "%s%s", p,
- kr->krb5_ctx->ccache_dir);
+ result = talloc_asprintf_append(result, "%s%s", p, dummy);
break;
case 'P':
if (kr->pd->cli_pid == 0) {
generated by cgit (git 2.34.1) at 2024-12-17 12:29:34 +0000