#include "includes.h"
#include "idmap_cache.h"
+#include "../libcli/security/security.h"
+#include "../librpc/gen_ndr/idmap.h"
/**
- * Find a sid2uid mapping
+ * Find a sid2xid mapping
* @param[in] sid the sid to map
- * @param[out] puid where to put the result
+ * @param[out] id where to put the result
* @param[out] expired is the cache entry expired?
* @retval Was anything in the cache at all?
*
- * If *puid == -1 this was a negative mapping.
+ * If id->id == -1 this was a negative mapping.
*/
-bool idmap_cache_find_sid2uid(const struct dom_sid *sid, uid_t *puid,
- bool *expired)
+bool idmap_cache_find_sid2unixid(const struct dom_sid *sid, struct unixid *id,
+ bool *expired)
{
fstring sidstr;
char *key;
- char *value;
+ char *value = NULL;
char *endptr;
time_t timeout;
- uid_t uid;
bool ret;
+ struct unixid tmp_id;
- key = talloc_asprintf(talloc_tos(), "IDMAP/SID2UID/%s",
+ key = talloc_asprintf(talloc_tos(), "IDMAP/SID2XID/%s",
sid_to_fstring(sidstr, sid));
if (key == NULL) {
return false;
}
- ret = gencache_get(key, &value, &timeout);
- TALLOC_FREE(key);
+ ret = gencache_get(key, talloc_tos(), &value, &timeout);
if (!ret) {
- return false;
- }
- uid = strtol(value, &endptr, 10);
- ret = (*endptr == '\0');
- SAFE_FREE(value);
- if (ret) {
- *puid = uid;
- *expired = (timeout <= time(NULL));
+ goto done;
}
- return ret;
-}
-
-/**
- * Find a uid2sid mapping
- * @param[in] uid the uid to map
- * @param[out] sid where to put the result
- * @param[out] expired is the cache entry expired?
- * @retval Was anything in the cache at all?
- *
- * If "is_null_sid(sid)", this was a negative mapping.
- */
-bool idmap_cache_find_uid2sid(uid_t uid, struct dom_sid *sid, bool *expired)
-{
- char *key;
- char *value;
- time_t timeout;
- bool ret = true;
+ DEBUG(10, ("Parsing value for key [%s]: value=[%s]\n", key, value));
- key = talloc_asprintf(talloc_tos(), "IDMAP/UID2SID/%d", (int)uid);
- if (key == NULL) {
- return false;
- }
- ret = gencache_get(key, &value, &timeout);
- TALLOC_FREE(key);
- if (!ret) {
- return false;
+ if (value[0] == '\0') {
+ DEBUG(0, ("Failed to parse value for key [%s]: "
+ "value is empty\n", key));
+ ret = false;
+ goto done;
}
- ZERO_STRUCTP(sid);
- if (value[0] != '-') {
- ret = string_to_sid(sid, value);
+
+ tmp_id.id = strtol(value, &endptr, 10);
+
+ if ((value == endptr) && (tmp_id.id == 0)) {
+ DEBUG(0, ("Failed to parse value for key [%s]: value[%s] does "
+ "not start with a number\n", key, value));
+ ret = false;
+ goto done;
}
- SAFE_FREE(value);
+
+ DEBUG(10, ("Parsing value for key [%s]: id=[%llu], endptr=[%s]\n",
+ key, (unsigned long long)tmp_id.id, endptr));
+
+ ret = (*endptr == ':');
if (ret) {
+ switch (endptr[1]) {
+ case 'U':
+ tmp_id.type = ID_TYPE_UID;
+ break;
+
+ case 'G':
+ tmp_id.type = ID_TYPE_GID;
+ break;
+
+ case 'B':
+ tmp_id.type = ID_TYPE_BOTH;
+ break;
+
+ case 'N':
+ tmp_id.type = ID_TYPE_NOT_SPECIFIED;
+ break;
+
+ case '\0':
+ DEBUG(0, ("FAILED to parse value for key [%s] "
+ "(id=[%llu], endptr=[%s]): "
+ "no type character after colon\n",
+ key, (unsigned long long)tmp_id.id, endptr));
+ ret = false;
+ goto done;
+ default:
+ DEBUG(0, ("FAILED to parse value for key [%s] "
+ "(id=[%llu], endptr=[%s]): "
+ "illegal type character '%c'\n",
+ key, (unsigned long long)tmp_id.id, endptr,
+ endptr[1]));
+ ret = false;
+ goto done;
+ }
+ if (endptr[2] != '\0') {
+ DEBUG(0, ("FAILED to parse value for key [%s] "
+ "(id=[%llu], endptr=[%s]): "
+ "more than 1 type character after colon\n",
+ key, (unsigned long long)tmp_id.id, endptr));
+ ret = false;
+ goto done;
+ }
+
+ *id = tmp_id;
*expired = (timeout <= time(NULL));
+ } else {
+ DEBUG(0, ("FAILED to parse value for key [%s] (value=[%s]): "
+ "colon missing after id=[%llu]\n",
+ key, value, (unsigned long long)tmp_id.id));
}
+
+done:
+ TALLOC_FREE(key);
+ TALLOC_FREE(value);
return ret;
}
/**
- * Store a mapping in the idmap cache
+ * Find a sid2uid mapping
* @param[in] sid the sid to map
- * @param[in] uid the uid to map
+ * @param[out] puid where to put the result
+ * @param[out] expired is the cache entry expired?
+ * @retval Was anything in the cache at all?
*
- * If both parameters are valid values, then a positive mapping in both
- * directions is stored. If "is_null_sid(sid)" is true, then this will be a
- * negative mapping of uid, we want to cache that for this uid we could not
- * find anything. Likewise if "uid==-1", then we want to cache that we did not
- * find a mapping for the sid passed here.
+ * If *puid == -1 this was a negative mapping.
*/
-void idmap_cache_set_sid2uid(const struct dom_sid *sid, uid_t uid)
+bool idmap_cache_find_sid2uid(const struct dom_sid *sid, uid_t *puid,
+ bool *expired)
{
- time_t now = time(NULL);
- time_t timeout;
- fstring sidstr, key, value;
-
- if (!is_null_sid(sid)) {
- fstr_sprintf(key, "IDMAP/SID2UID/%s",
- sid_to_fstring(sidstr, sid));
- fstr_sprintf(value, "%d", (int)uid);
- timeout = (uid == -1)
- ? lp_idmap_negative_cache_time()
- : lp_idmap_cache_time();
- gencache_set(key, value, now + timeout);
+ bool ret;
+ struct unixid id;
+ ret = idmap_cache_find_sid2unixid(sid, &id, expired);
+ if (!ret) {
+ return false;
}
- if (uid != -1) {
- fstr_sprintf(key, "IDMAP/UID2SID/%d", (int)uid);
- if (is_null_sid(sid)) {
- /* negative uid mapping */
- fstrcpy(value, "-");
- timeout = lp_idmap_negative_cache_time();
- }
- else {
- sid_to_fstring(value, sid);
- timeout = lp_idmap_cache_time();
- }
- gencache_set(key, value, now + timeout);
+
+ if (id.type == ID_TYPE_BOTH || id.type == ID_TYPE_UID) {
+ *puid = id.id;
+ } else {
+ *puid = -1;
}
+ return true;
}
/**
bool idmap_cache_find_sid2gid(const struct dom_sid *sid, gid_t *pgid,
bool *expired)
{
- fstring sidstr;
- char *key;
- char *value;
- char *endptr;
- time_t timeout;
- gid_t gid;
bool ret;
-
- key = talloc_asprintf(talloc_tos(), "IDMAP/SID2GID/%s",
- sid_to_fstring(sidstr, sid));
- if (key == NULL) {
- return false;
- }
- ret = gencache_get(key, &value, &timeout);
- TALLOC_FREE(key);
+ struct unixid id;
+ ret = idmap_cache_find_sid2unixid(sid, &id, expired);
if (!ret) {
return false;
}
- gid = strtol(value, &endptr, 10);
- ret = (*endptr == '\0');
- SAFE_FREE(value);
- if (ret) {
- *pgid = gid;
- *expired = (timeout <= time(NULL));
+
+ if (id.type == ID_TYPE_BOTH || id.type == ID_TYPE_GID) {
+ *pgid = id.id;
+ } else {
+ *pgid = -1;
}
- return ret;
+ return true;
+}
+
+struct idmap_cache_xid2sid_state {
+ struct dom_sid *sid;
+ bool *expired;
+ bool ret;
+};
+
+static void idmap_cache_xid2sid_parser(time_t timeout, DATA_BLOB blob,
+ void *private_data)
+{
+ struct idmap_cache_xid2sid_state *state =
+ (struct idmap_cache_xid2sid_state *)private_data;
+ char *value;
+
+ ZERO_STRUCTP(state->sid);
+ state->ret = false;
+
+ if ((blob.length == 0) || (blob.data[blob.length-1] != 0)) {
+ /*
+ * Not a string, can't be a valid mapping
+ */
+ return;
+ }
+
+ value = (char *)blob.data;
+
+ if (value[0] != '-') {
+ state->ret = string_to_sid(state->sid, value);
+ }
+ if (state->ret) {
+ *state->expired = (timeout <= time(NULL));
+ }
+}
+
+/**
+ * Find a uid2sid mapping
+ * @param[in] uid the uid to map
+ * @param[out] sid where to put the result
+ * @param[out] expired is the cache entry expired?
+ * @retval Was anything in the cache at all?
+ *
+ * If "is_null_sid(sid)", this was a negative mapping.
+ */
+
+bool idmap_cache_find_uid2sid(uid_t uid, struct dom_sid *sid, bool *expired)
+{
+ fstring key;
+ struct idmap_cache_xid2sid_state state;
+
+ fstr_sprintf(key, "IDMAP/UID2SID/%d", (int)uid);
+
+ state.sid = sid;
+ state.expired = expired;
+ state.ret = false;
+
+ gencache_parse(key, idmap_cache_xid2sid_parser, &state);
+ return state.ret;
}
/**
bool idmap_cache_find_gid2sid(gid_t gid, struct dom_sid *sid, bool *expired)
{
- char *key;
- char *value;
- time_t timeout;
- bool ret = true;
+ fstring key;
+ struct idmap_cache_xid2sid_state state;
- key = talloc_asprintf(talloc_tos(), "IDMAP/GID2SID/%d", (int)gid);
- if (key == NULL) {
- return false;
- }
- ret = gencache_get(key, &value, &timeout);
- TALLOC_FREE(key);
- if (!ret) {
- return false;
- }
- ZERO_STRUCTP(sid);
- if (value[0] != '-') {
- ret = string_to_sid(sid, value);
- }
- SAFE_FREE(value);
- if (ret) {
- *expired = (timeout <= time(NULL));
- }
- return ret;
+ fstr_sprintf(key, "IDMAP/GID2SID/%d", (int)gid);
+
+ state.sid = sid;
+ state.expired = expired;
+ state.ret = false;
+
+ gencache_parse(key, idmap_cache_xid2sid_parser, &state);
+ return state.ret;
}
/**
* Store a mapping in the idmap cache
* @param[in] sid the sid to map
- * @param[in] gid the gid to map
+ * @param[in] unix_id the unix_id to map
*
* If both parameters are valid values, then a positive mapping in both
* directions is stored. If "is_null_sid(sid)" is true, then this will be a
- * negative mapping of gid, we want to cache that for this gid we could not
- * find anything. Likewise if "gid==-1", then we want to cache that we did not
+ * negative mapping of xid, we want to cache that for this xid we could not
+ * find anything. Likewise if "xid==-1", then we want to cache that we did not
* find a mapping for the sid passed here.
*/
-void idmap_cache_set_sid2gid(const struct dom_sid *sid, gid_t gid)
+void idmap_cache_set_sid2unixid(const struct dom_sid *sid, struct unixid *unix_id)
{
time_t now = time(NULL);
time_t timeout;
fstring sidstr, key, value;
if (!is_null_sid(sid)) {
- fstr_sprintf(key, "IDMAP/SID2GID/%s",
+ fstr_sprintf(key, "IDMAP/SID2XID/%s",
sid_to_fstring(sidstr, sid));
- fstr_sprintf(value, "%d", (int)gid);
- timeout = (gid == -1)
+ switch (unix_id->type) {
+ case ID_TYPE_UID:
+ fstr_sprintf(value, "%d:U", (int)unix_id->id);
+ break;
+ case ID_TYPE_GID:
+ fstr_sprintf(value, "%d:G", (int)unix_id->id);
+ break;
+ case ID_TYPE_BOTH:
+ fstr_sprintf(value, "%d:B", (int)unix_id->id);
+ break;
+ case ID_TYPE_NOT_SPECIFIED:
+ fstr_sprintf(value, "%d:N", (int)unix_id->id);
+ break;
+ default:
+ return;
+ }
+ timeout = (unix_id->id == -1)
? lp_idmap_negative_cache_time()
: lp_idmap_cache_time();
gencache_set(key, value, now + timeout);
}
- if (gid != -1) {
- fstr_sprintf(key, "IDMAP/GID2SID/%d", (int)gid);
+ if (unix_id->id != -1) {
if (is_null_sid(sid)) {
- /* negative gid mapping */
+ /* negative xid mapping */
fstrcpy(value, "-");
timeout = lp_idmap_negative_cache_time();
}
sid_to_fstring(value, sid);
timeout = lp_idmap_cache_time();
}
+ switch (unix_id->type) {
+ case ID_TYPE_BOTH:
+ fstr_sprintf(key, "IDMAP/UID2SID/%d", (int)unix_id->id);
+ gencache_set(key, value, now + timeout);
+ fstr_sprintf(key, "IDMAP/GID2SID/%d", (int)unix_id->id);
+ gencache_set(key, value, now + timeout);
+ return;
+
+ case ID_TYPE_UID:
+ fstr_sprintf(key, "IDMAP/UID2SID/%d", (int)unix_id->id);
+ break;
+
+ case ID_TYPE_GID:
+ fstr_sprintf(key, "IDMAP/GID2SID/%d", (int)unix_id->id);
+ break;
+
+ default:
+ return;
+ }
gencache_set(key, value, now + timeout);
}
}
+
+static char* key_xid2sid_str(TALLOC_CTX* mem_ctx, char t, const char* id) {
+ return talloc_asprintf(mem_ctx, "IDMAP/%cID2SID/%s", t, id);
+}
+
+static char* key_xid2sid(TALLOC_CTX* mem_ctx, char t, int id) {
+ char str[32];
+ snprintf(str, sizeof(str), "%d", id);
+ return key_xid2sid_str(mem_ctx, t, str);
+}
+
+static char* key_sid2xid_str(TALLOC_CTX* mem_ctx, const char* id) {
+ return talloc_asprintf(mem_ctx, "IDMAP/SID2XID/%s", id);
+}
+
+static bool idmap_cache_del_xid(char t, int xid)
+{
+ TALLOC_CTX* mem_ctx = talloc_stackframe();
+ const char* key = key_xid2sid(mem_ctx, t, xid);
+ char* sid_str = NULL;
+ time_t timeout;
+ bool ret = true;
+
+ if (!gencache_get(key, mem_ctx, &sid_str, &timeout)) {
+ DEBUG(3, ("no entry: %s\n", key));
+ ret = false;
+ goto done;
+ }
+
+ if (sid_str[0] != '-') {
+ const char* sid_key = key_sid2xid_str(mem_ctx, sid_str);
+ if (!gencache_del(sid_key)) {
+ DEBUG(2, ("failed to delete: %s\n", sid_key));
+ ret = false;
+ } else {
+ DEBUG(5, ("delete: %s\n", sid_key));
+ }
+
+ }
+
+ if (!gencache_del(key)) {
+ DEBUG(1, ("failed to delete: %s\n", key));
+ ret = false;
+ } else {
+ DEBUG(5, ("delete: %s\n", key));
+ }
+
+done:
+ talloc_free(mem_ctx);
+ return ret;
+}
+
+bool idmap_cache_del_uid(uid_t uid) {
+ return idmap_cache_del_xid('U', uid);
+}
+
+bool idmap_cache_del_gid(gid_t gid) {
+ return idmap_cache_del_xid('G', gid);
+}
+
+bool idmap_cache_del_sid(const struct dom_sid *sid)
+{
+ TALLOC_CTX* mem_ctx = talloc_stackframe();
+ bool ret = true;
+ bool expired;
+ struct unixid id;
+ const char *sid_key;
+
+ if (!idmap_cache_find_sid2unixid(sid, &id, &expired)) {
+ ret = false;
+ goto done;
+ }
+
+ if (id.id != -1) {
+ switch (id.type) {
+ case ID_TYPE_BOTH:
+ idmap_cache_del_xid('U', id.id);
+ idmap_cache_del_xid('G', id.id);
+ break;
+ case ID_TYPE_UID:
+ idmap_cache_del_xid('U', id.id);
+ break;
+ case ID_TYPE_GID:
+ idmap_cache_del_xid('G', id.id);
+ break;
+ default:
+ break;
+ }
+ }
+
+ sid_key = key_sid2xid_str(mem_ctx, dom_sid_string(mem_ctx, sid));
+ if (sid_key == NULL) {
+ return false;
+ }
+ /* If the mapping was symmetric, then this should fail */
+ gencache_del(sid_key);
+done:
+ talloc_free(mem_ctx);
+ return ret;
+}
git.samba.org / samba.git / blobdiff