Cache cleaning tool

1 files changed, 360 insertions, 0 deletions

diff --git a/src/tools/sss_cache.c b/src/tools/sss_cache.c
new file mode 100644
index 000000000..9eefca45a
--- /dev/null
+++ b/src/tools/sss_cache.c
@@ -0,0 +1,360 @@
+/*
+   SSSD
+
+   sss_cache
+
+   Copyright (C) Jan Zeleny <jzeleny@redhat.com>        2011
+
+   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 <stdio.h>
+#include <stdlib.h>
+#include <talloc.h>
+#include <popt.h>
+#include <sys/types.h>
+
+#include "util/util.h"
+#include "tools/sss_sync_ops.h"
+#include "db/sysdb.h"
+
+#define INVALIDATE_NONE 0
+#define INVALIDATE_USERS 1
+#define INVALIDATE_GROUPS 2
+#define INVALIDATE_NETGROUPS 4
+
+#define TYPE_USER  0
+#define TYPE_GROUP 1
+#define TYPE_NETGROUP 2
+struct entry_type_t {
+    const char *type_string;
+    int (* search_fn)(TALLOC_CTX *, struct sysdb_ctx *, struct sss_domain_info *,
+               const char *, const char **, size_t *, struct ldb_message ***);
+};
+static struct entry_type_t entry_types[] = {
+    {"user", sysdb_search_users},
+    {"group", sysdb_search_groups},
+    {"netgroup", sysdb_search_netgroups}
+};
+
+struct cache_tool_ctx {
+    struct confdb_ctx *confdb;
+    struct sss_domain_info *domains;
+    struct sysdb_ctx_list *sysdb_list;
+
+    char *user_filter;
+    char *group_filter;
+    char *netgroup_filter;
+};
+
+errno_t init_domains(struct cache_tool_ctx *ctx, const char *domain);
+errno_t init_context(int argc, const char *argv[], struct cache_tool_ctx **tctx);
+errno_t invalidate_entry(TALLOC_CTX *ctx, struct sysdb_ctx *sysdb,
+                         const char *name, int entry_type);
+void invalidate_entries(TALLOC_CTX *ctx, struct sysdb_ctx *sysdb,
+                        int entry_type, const char *filter);
+
+int main(int argc, const char *argv[])
+{
+    errno_t ret;
+    struct cache_tool_ctx *tctx = NULL;
+    struct sysdb_ctx *sysdb;
+    int i;
+
+    ret = init_context(argc, argv, &tctx);
+    if (ret != EOK) {
+        DEBUG(2, ("Error initializing context for the application\n"));
+        goto done;
+    }
+
+    for (i = 0; i < tctx->sysdb_list->num_dbs; i++) {
+        sysdb = tctx->sysdb_list->dbs[i];
+        ret = sysdb_transaction_start(sysdb);
+        if (ret != EOK) {
+            DEBUG(1, ("Could not start the transaction!\n"));
+            goto done;
+        }
+
+        invalidate_entries(tctx, sysdb, TYPE_USER, tctx->user_filter);
+        invalidate_entries(tctx, sysdb, TYPE_GROUP, tctx->group_filter);
+        invalidate_entries(tctx, sysdb, TYPE_NETGROUP, tctx->netgroup_filter);
+
+        ret = sysdb_transaction_commit(sysdb);
+        if (ret != EOK) {
+            DEBUG(1, ("Could not commit the transaction!\n"));
+            sysdb_transaction_cancel(sysdb);
+        }
+    }
+
+done:
+    if (tctx) talloc_free(tctx);
+    return ret;
+}
+
+
+void invalidate_entries(TALLOC_CTX *ctx, struct sysdb_ctx *sysdb,
+                        int entry_type, const char *filter)
+{
+    const char *attrs[] = {SYSDB_NAME, NULL};
+    size_t msg_count;
+    struct ldb_message **msgs;
+    struct entry_type_t type_rec;
+    errno_t ret;
+    int i;
+    const char *c_name;
+
+    type_rec = entry_types[entry_type];
+    if (filter) {
+        ret = type_rec.search_fn(ctx, sysdb, NULL, filter, attrs,
+                                 &msg_count, &msgs);
+        if (ret != EOK) {
+            DEBUG(3, ("Searching for %s with filter %s failed\n",
+                      type_rec.type_string, filter));
+            return;
+        }
+
+        for (i = 0; i < msg_count; i++) {
+            c_name = ldb_msg_find_attr_as_string(msgs[i], SYSDB_NAME, NULL);
+            if (c_name == NULL) {
+                DEBUG(3, ("Something bad happened, can't find attribute %s",
+                            SYSDB_NAME));
+                ERROR("Couldn't invalidate %s", type_rec.type_string);
+            } else {
+                ret = invalidate_entry(ctx, sysdb, c_name, entry_type);
+                if (ret != EOK) {
+                    DEBUG(3, ("Couldn't invalidate %s %s", type_rec.type_string,
+                              c_name));
+                    ERROR("Couldn't invalidate %s %s", type_rec.type_string,
+                          c_name);
+                }
+            }
+        }
+        talloc_zfree(msgs);
+    }
+}
+
+errno_t invalidate_entry(TALLOC_CTX *ctx, struct sysdb_ctx *sysdb,
+                         const char *name, int entry_type)
+{
+    struct sysdb_attrs *sys_attrs = NULL;
+    errno_t ret;
+
+    sys_attrs = sysdb_new_attrs(ctx);
+    if (sys_attrs) {
+        ret = sysdb_attrs_add_time_t(sys_attrs,
+                SYSDB_CACHE_EXPIRE, 1);
+        if (ret == EOK) {
+            switch (entry_type) {
+                case TYPE_USER:
+                    ret = sysdb_set_user_attr(ctx, sysdb, NULL, name,
+                            sys_attrs, SYSDB_MOD_REP);
+                    break;
+                case TYPE_GROUP:
+                    ret = sysdb_set_group_attr(ctx, sysdb, NULL, name,
+                            sys_attrs, SYSDB_MOD_REP);
+                    break;
+                case TYPE_NETGROUP:
+                    ret = sysdb_set_netgroup_attr(sysdb, NULL, name,
+                            sys_attrs, SYSDB_MOD_REP);
+                    break;
+                default:
+                    return EINVAL;
+            }
+            if (ret != EOK) {
+                DEBUG(3, ("Could not set entry attributes\n"));
+            }
+        } else {
+            DEBUG(3, ("Could not add expiration time to attributes\n"));
+        }
+        talloc_zfree(sys_attrs);
+    } else {
+        DEBUG(3, ("Could not create sysdb attributes\n"));
+    }
+    return ret;
+}
+
+errno_t init_domains(struct cache_tool_ctx *ctx, const char *domain) {
+    char *confdb_path;
+    int ret;
+    struct sysdb_ctx *db_ctx = NULL;
+
+    confdb_path = talloc_asprintf(ctx, "%s/%s", DB_PATH, CONFDB_FILE);
+    if (confdb_path == NULL) {
+        return ENOMEM;
+    }
+
+    /* Connect to the conf db */
+    ret = confdb_init(ctx, &ctx->confdb, confdb_path);
+    talloc_free(confdb_path);
+    if (ret != EOK) {
+        DEBUG(1, ("Could not initialize connection to the confdb\n"));
+        return ret;
+    }
+
+    if (domain) {
+        ret = confdb_get_domain(ctx->confdb, domain, &ctx->domains);
+        if (ret != EOK) {
+            DEBUG(1, ("Could not get '%s' domain: [%d] [%s]\n",
+                      domain, ret, strerror(ret)));
+            goto fail;
+        }
+
+        ret = sysdb_domain_init(ctx, ctx->domains, DB_PATH, &db_ctx);
+        if (ret != EOK) {
+            DEBUG(1, ("Could not initialize connection to the sysdb\n"));
+            goto fail;
+        }
+
+        ret = sysdb_list_init(ctx, DB_PATH, db_ctx, &ctx->sysdb_list);
+        if (ret != EOK) {
+            DEBUG(1, ("Could not initialize the list of connections\n"));
+            goto fail;
+        }
+    } else {
+        ret = sysdb_init(ctx, ctx->confdb, NULL, false, &ctx->sysdb_list);
+        if (ret != EOK) {
+            DEBUG(1, ("Could not initialize connection to the sysdb\n"));
+            goto fail;
+        }
+    }
+
+    return EOK;
+fail:
+    if (ctx->confdb) talloc_zfree(ctx->confdb);
+    if (ctx->domains) talloc_zfree(ctx->domains);
+    if (ctx->sysdb_list) {
+        talloc_zfree(ctx->sysdb_list);
+    } else {
+        if (db_ctx) talloc_free(db_ctx);
+    }
+    return ret;
+}
+
+errno_t init_context(int argc, const char *argv[], struct cache_tool_ctx **tctx)
+{
+    struct cache_tool_ctx *ctx = NULL;
+    int idb = INVALIDATE_NONE;
+    char *user = NULL;
+    char *group = NULL;
+    char *netgroup = NULL;
+    char *domain = NULL;
+    int debug = 0;
+    errno_t ret = EOK;
+
+    poptContext pc = NULL;
+    struct poptOption long_options[] = {
+        POPT_AUTOHELP
+        { "debug", '\0', POPT_ARG_INT | POPT_ARGFLAG_DOC_HIDDEN, &debug,
+            0, _("The debug level to run with"), NULL },
+        { "user", 'u', POPT_ARG_STRING, &user, 0,
+            _("Invalidate particular user"), NULL },
+        { "users", 'U', POPT_ARG_NONE, NULL, 'u',
+            _("Invalidate all users"), NULL },
+        { "group", 'g', POPT_ARG_STRING, &group, 0,
+            _("Invalidate particular group"), NULL },
+        { "groups", 'G', POPT_ARG_NONE, NULL, 'g',
+            _("Invalidate all groups"), NULL },
+        { "netgroup", 'n', POPT_ARG_STRING, &netgroup, 0,
+            _("Invalidate particular netgroup"), NULL },
+        { "netgroups", 'N', POPT_ARG_NONE, NULL, 'n',
+            _("Invalidate all netgroups"), NULL },
+        { "domain", 'd', POPT_ARG_STRING, &domain, 0,
+            _("Only invalidate entries from a particular domain"), NULL },
+        POPT_TABLEEND
+    };
+
+    ret = set_locale();
+    if (ret != EOK) {
+        DEBUG(1, ("set_locale failed (%d): %s\n", ret, strerror(ret)));
+        ERROR("Error setting the locale\n");
+        goto fini;
+    }
+
+    pc = poptGetContext(NULL, argc, argv, long_options, 0);
+    while ((ret = poptGetNextOpt(pc)) > 0) {
+        switch (ret) {
+            case 'u':
+                idb |= INVALIDATE_USERS;
+                break;
+            case 'g':
+                idb |= INVALIDATE_GROUPS;
+                break;
+            case 'n':
+                idb |= INVALIDATE_NETGROUPS;
+                break;
+        }
+    }
+    if (ret != -1) {
+        BAD_POPT_PARAMS(pc, poptStrerror(ret), ret, fini);
+    }
+
+    debug_level = debug;
+    debug_prg_name = argv[0];
+    CHECK_ROOT(ret, debug_prg_name);
+
+    ctx = talloc_zero(NULL, struct cache_tool_ctx);
+    if (ctx == NULL) {
+        DEBUG(1, ("Could not allocate memory for tools context\n"));
+        ret = ENOMEM;
+        goto fini;
+    }
+
+    if (idb & INVALIDATE_USERS) {
+        ctx->user_filter = talloc_asprintf(ctx, "(%s=*)", SYSDB_NAME);
+    } else if (user) {
+        ctx->user_filter = talloc_asprintf(ctx, "(%s=%s)", SYSDB_NAME, user);
+    }
+
+    if (idb & INVALIDATE_GROUPS) {
+        ctx->group_filter = talloc_asprintf(ctx, "(%s=*)", SYSDB_NAME);
+    } else if (group) {
+        ctx->group_filter = talloc_asprintf(ctx, "(%s=%s)", SYSDB_NAME, group);
+    }
+
+    if (idb & INVALIDATE_NETGROUPS) {
+        ctx->netgroup_filter = talloc_asprintf(ctx, "(%s=*)", SYSDB_NAME);
+    } else if (netgroup) {
+        ctx->netgroup_filter = talloc_asprintf(ctx, "(%s=%s)", SYSDB_NAME,
+                                               netgroup);
+    }
+    if (((idb & INVALIDATE_USERS || user) && !ctx->user_filter) ||
+        ((idb & INVALIDATE_GROUPS || group) && !ctx->group_filter) ||
+        ((idb & INVALIDATE_NETGROUPS || netgroup) && !ctx->netgroup_filter)) {
+        DEBUG(1, ("Construction of filters failed\n"));
+        ret = ENOMEM;
+        goto fini;
+    }
+
+    ret = init_domains(ctx, domain);
+    if (ret != EOK) {
+        DEBUG(3, ("Initialization of sysdb connections failed\n"));
+        goto fini;
+    }
+
+    ret = EOK;
+
+fini:
+    poptFreeContext(pc);
+    free(user);
+    free(group);
+    free(netgroup);
+    free(domain);
+    if (ret != EOK && ctx) {
+        talloc_zfree(ctx);
+    }
+    if (ret == EOK) {
+        *tctx = ctx;
+    }
+    return ret;
+}