SUDO: move code shared between ldap and ipa to separate module

Reviewed-by: Sumit Bose <sbose@redhat.com>

1 files changed, 149 insertions, 0 deletions

diff --git a/src/providers/ldap/sdap_sudo_shared.c b/src/providers/ldap/sdap_sudo_shared.c
new file mode 100644
index 000000000..86a6acf47
--- /dev/null
+++ b/src/providers/ldap/sdap_sudo_shared.c
@@ -0,0 +1,149 @@
+/*
+    Authors:
+        Pavel Březina <pbrezina@redhat.com>
+
+    Copyright (C) 2015 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 <errno.h>
+#include <time.h>
+#include <talloc.h>
+
+#include "util/util.h"
+#include "providers/dp_ptask.h"
+#include "providers/ldap/sdap.h"
+#include "providers/ldap/sdap_sudo_shared.h"
+#include "db/sysdb_sudo.h"
+
+errno_t
+sdap_sudo_ptask_setup_generic(struct be_ctx *be_ctx,
+                              struct dp_option *opts,
+                              be_ptask_send_t full_send_fn,
+                              be_ptask_recv_t full_recv_fn,
+                              be_ptask_send_t smart_send_fn,
+                              be_ptask_recv_t smart_recv_fn,
+                              void *pvt)
+{
+    time_t smart;
+    time_t full;
+    time_t delay;
+    time_t last_refresh;
+    errno_t ret;
+
+    smart = dp_opt_get_int(opts, SDAP_SUDO_SMART_REFRESH_INTERVAL);
+    full = dp_opt_get_int(opts, SDAP_SUDO_FULL_REFRESH_INTERVAL);
+
+    if (smart == 0 && full == 0) {
+        /* We don't allow both types to be disabled. At least smart refresh
+         * needs to be enabled. In this case smart refresh will catch up new
+         * and modified rules and deleted rules are caught when expired. */
+        smart = opts[SDAP_SUDO_SMART_REFRESH_INTERVAL].def_val.number;
+
+        DEBUG(SSSDBG_CONF_SETTINGS, "At least smart refresh needs to be "
+              "enabled. Setting smart refresh interval to default value "
+              "(%ld) seconds.\n", smart);
+    } else if (full <= smart) {
+        /* In this case it does not make any sense to run smart refresh. */
+        smart = 0;
+
+        DEBUG(SSSDBG_CONF_SETTINGS, "Smart refresh interval has to be lower "
+              "than full refresh interval. Periodical smart refresh will be "
+              "disabled.\n");
+    }
+
+    ret = sysdb_sudo_get_last_full_refresh(be_ctx->domain, &last_refresh);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_MINOR_FAILURE, "Unable to obtain time of last full "
+              "refresh. Assuming none was performed so far.\n");
+        last_refresh = 0;
+    }
+
+    if (last_refresh == 0) {
+        /* If this is the first startup, we need to kick off an refresh
+         * immediately, to close a window where clients requesting sudo
+         * information won't get an immediate reply with no entries */
+        delay = 0;
+    } else {
+        /* At least one update has previously run, so clients will get cached
+         * data. We will delay the refresh so we don't slow down the startup
+         * process if this is happening during system boot. */
+        delay = 10;
+    }
+
+    /* Full refresh.
+     *
+     * Disable when offline and run immediately when SSSD goes back online.
+     * Since we have periodical online check we don't have to run this task
+     * when offline. */
+    ret = be_ptask_create(be_ctx, be_ctx, full, delay, 0, 0, full,
+                          BE_PTASK_OFFLINE_DISABLE, 0,
+                          full_send_fn, full_recv_fn, pvt,
+                          "SUDO Full Refresh", NULL);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_CRIT_FAILURE, "Unable to setup full refresh ptask "
+              "[%d]: %s\n", ret, sss_strerror(ret));
+        return ret;
+    }
+
+    /* Smart refresh.
+     *
+     * Disable when offline and reschedule normally when SSSD goes back online.
+     * Since we have periodical online check we don't have to run this task
+     * when offline. */
+    ret = be_ptask_create(be_ctx, be_ctx, smart, delay + smart, smart, 0, smart,
+                          BE_PTASK_OFFLINE_DISABLE, 0,
+                          smart_send_fn, smart_recv_fn, pvt,
+                          "SUDO Smart Refresh", NULL);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_CRIT_FAILURE, "Unable to setup smart refresh ptask "
+              "[%d]: %s\n", ret, sss_strerror(ret));
+        return ret;
+    }
+
+    return EOK;
+}
+
+void
+sdap_sudo_set_usn(struct sdap_server_opts *srv_opts,
+                  char *usn)
+{
+    unsigned int usn_number;
+    char *endptr = NULL;
+
+    if (srv_opts == NULL) {
+        DEBUG(SSSDBG_TRACE_FUNC, "Bug: srv_opts is NULL\n");
+        return;
+    }
+
+    if (usn == NULL) {
+        DEBUG(SSSDBG_TRACE_FUNC, "Bug: usn is NULL\n");
+        return;
+    }
+
+    if (sysdb_compare_usn(usn, srv_opts->max_sudo_value) > 0) {
+        talloc_zfree(srv_opts->max_sudo_value);
+        srv_opts->max_sudo_value = talloc_steal(srv_opts, usn);
+    }
+
+    usn_number = strtoul(usn, &endptr, 10);
+    if ((endptr == NULL || (*endptr == '\0' && endptr != usn))
+         && (usn_number > srv_opts->last_usn)) {
+         srv_opts->last_usn = usn_number;
+    }
+
+    DEBUG(SSSDBG_FUNC_DATA, "SUDO higher USN value: [%s]\n",
+                             srv_opts->max_sudo_value);
+}