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-rw-r--r--src/responder/nss/nsssrv_cmd.c357
1 files changed, 134 insertions, 223 deletions
diff --git a/src/responder/nss/nsssrv_cmd.c b/src/responder/nss/nsssrv_cmd.c
index c74969d10..18f8d3995 100644
--- a/src/responder/nss/nsssrv_cmd.c
+++ b/src/responder/nss/nsssrv_cmd.c
@@ -1582,152 +1582,146 @@ done:
return EOK;
}
+static int nss_cmd_getgr_send_reply(struct nss_dom_ctx *dctx, bool filter)
+{
+ struct nss_cmd_ctx *cmdctx = dctx->cmdctx;
+ struct cli_ctx *cctx = cmdctx->cctx;
+ struct nss_ctx *nctx;
+ int ret;
+ int i;
+
+ nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx);
+
+ ret = sss_packet_new(cctx->creq, 0,
+ sss_packet_get_cmd(cctx->creq->in),
+ &cctx->creq->out);
+ if (ret != EOK) {
+ return EFAULT;
+ }
+ i = dctx->res->count;
+ ret = fill_grent(cctx->creq->out,
+ dctx->domain,
+ nctx, filter,
+ dctx->res->msgs, 1, &i);
+ if (ret) {
+ return ret;
+ }
+ sss_packet_set_error(cctx->creq->out, EOK);
+ sss_cmd_done(cctx, cmdctx);
+ return EOK;
+}
+
static void nss_cmd_getgrnam_dp_callback(uint16_t err_maj, uint32_t err_min,
const char *err_msg, void *ptr);
-static void nss_cmd_getgrnam_callback(void *ptr, int status,
- struct ldb_result *res)
+/* search for a group.
+ * Returns:
+ * ENOENT, if group is definitely not found
+ * EAGAIN, if group is beeing fetched from backend via async operations
+ * EOK, if found
+ * anything else on a fatal error
+ */
+
+static int nss_cmd_getgrnam_search(struct nss_dom_ctx *dctx)
{
- struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx);
struct nss_cmd_ctx *cmdctx = dctx->cmdctx;
+ struct sss_domain_info *dom = dctx->domain;
struct cli_ctx *cctx = cmdctx->cctx;
- struct sss_domain_info *dom;
+ const char *name = cmdctx->name;
struct sysdb_ctx *sysdb;
struct nss_ctx *nctx;
- uint8_t *body;
- size_t blen;
- bool neghit = false;
- int ncret;
- int i, ret;
+ int ret;
nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx);
- if (status != LDB_SUCCESS) {
- ret = nss_cmd_send_error(cmdctx, status);
- if (ret != EOK) {
- NSS_CMD_FATAL_ERROR(cctx);
+ while (dom) {
+ /* if it is a domainless search, skip domains that require fully
+ * qualified names instead */
+ while (dom && cmdctx->check_next && dom->fqnames) {
+ dom = dom->next;
}
- sss_cmd_done(cctx, cmdctx);
- return;
- }
- if (dctx->check_provider) {
- ret = check_cache(dctx, nctx, res,
- SSS_DP_GROUP, cmdctx->name, 0,
- nss_cmd_getgrnam_dp_callback);
- if (ret != EOK) {
- /* Anything but EOK means we should reenter the mainloop
- * because we may be refreshing the cache
- */
- return;
+ if (!dom) break;
+
+ if (dom != dctx->domain) {
+ /* make sure we reset the check_provider flag when we check
+ * a new domain */
+ dctx->check_provider = NEED_CHECK_PROVIDER(dom->provider);
}
- }
- switch (res->count) {
- case 0:
- if (cmdctx->check_next) {
+ /* make sure to update the dctx if we changed domain */
+ dctx->domain = dom;
- ret = EOK;
+ /* verify this group has not yet been negatively cached,
+ * or has been permanently filtered */
+ ret = nss_ncache_check_group(nctx->ncache, nctx->neg_timeout,
+ dom->name, name);
- /* skip domains that require FQnames or have negative caches */
- for (dom = dctx->domain->next; dom; dom = dom->next) {
+ /* if neg cached, return we didn't find it */
+ if (ret == EEXIST) {
+ DEBUG(2, ("Group [%s] does not exist! (negative cache)\n", name));
+ return ENOENT;
+ }
- if (dom->fqnames) continue;
+ DEBUG(4, ("Requesting info for [%s@%s]\n", name, dom->name));
- ncret = nss_ncache_check_group(nctx->ncache,
- nctx->neg_timeout,
- dom->name, cmdctx->name);
- if (ncret == ENOENT) break;
+ ret = sysdb_get_ctx_from_list(cctx->rctx->db_list, dom, &sysdb);
+ if (ret != EOK) {
+ DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n"));
+ return EIO;
+ }
- neghit = true;
- }
- /* reset neghit if we still have a domain to check */
- if (dom) neghit = false;
+ ret = sysdb_getgrnam(cmdctx, sysdb, dom, name, &dctx->res);
+ if (ret != EOK) {
+ DEBUG(1, ("Failed to make request to our cache!\n"));
+ return EIO;
+ }
- if (neghit) {
- DEBUG(2, ("Group [%s] does not exist! (negative cache)\n",
- cmdctx->name));
- ret = ENOENT;
- }
- if (dom == NULL) {
- DEBUG(2, ("No matching domain found for [%s], fail!\n",
- cmdctx->name));
- ret = ENOENT;
- }
+ if (dctx->res->count > 1) {
+ DEBUG(0, ("getgrnam call returned more than one result !?!\n"));
+ return ENOENT;
+ }
- if (ret == EOK) {
- dctx->domain = dom;
- dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider);
- if (dctx->res) talloc_free(res);
- dctx->res = NULL;
+ if (dctx->res->count == 0 && !dctx->check_provider) {
+ /* if a multidomain search, try with next */
+ if (cmdctx->check_next) {
+ dom = dom->next;
+ continue;
+ }
- DEBUG(4, ("Requesting info for [%s@%s]\n",
- cmdctx->name, dctx->domain->name));
+ DEBUG(2, ("No results for getgrnam call\n"));
- ret = sysdb_get_ctx_from_list(cctx->rctx->db_list,
- dctx->domain, &sysdb);
- if (ret != EOK) {
- DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n"));
- NSS_CMD_FATAL_ERROR(cctx);
- }
- ret = sysdb_getgrnam(cmdctx, sysdb,
- dctx->domain, cmdctx->name,
- nss_cmd_getgrnam_callback, dctx);
- if (ret != EOK) {
- DEBUG(1, ("Failed to make request to our cache!\n"));
- }
+ /* set negative cache only if not result of cache check */
+ ret = nss_ncache_set_group(nctx->ncache, false, dom->name, name);
+ if (ret != EOK) {
+ return ret;
}
- /* we made another call, end here */
- if (ret == EOK) return;
+ return ENOENT;
}
-
- DEBUG(2, ("No results for getgrnam call\n"));
-
- /* set negative cache only if not result of cache check */
- if (!neghit) {
- ret = nss_ncache_set_group(nctx->ncache, false,
- dctx->domain->name, cmdctx->name);
+ /* if this is a caching provider (or if we haven't checked the cache
+ * yet) then verify that the cache is uptodate */
+ if (dctx->check_provider) {
+ ret = check_cache(dctx, nctx, dctx->res,
+ SSS_DP_GROUP, name, 0,
+ nss_cmd_getgrnam_dp_callback);
if (ret != EOK) {
- NSS_CMD_FATAL_ERROR(cctx);
+ /* Anything but EOK means we should reenter the mainloop
+ * because we may be refreshing the cache
+ */
+ return ret;
}
}
- ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t),
- sss_packet_get_cmd(cctx->creq->in),
- &cctx->creq->out);
- if (ret != EOK) {
- NSS_CMD_FATAL_ERROR(cctx);
- }
- sss_packet_get_body(cctx->creq->out, &body, &blen);
- ((uint32_t *)body)[0] = 0; /* 0 results */
- ((uint32_t *)body)[1] = 0; /* reserved */
- break;
-
- default:
-
- DEBUG(6, ("Returning info for group [%s]\n", cmdctx->name));
+ /* One result found */
+ DEBUG(6, ("Returning info for group [%s@%s]\n", name, dom->name));
- /* create response packet */
- ret = sss_packet_new(cctx->creq, 0,
- sss_packet_get_cmd(cctx->creq->in),
- &cctx->creq->out);
- if (ret != EOK) {
- NSS_CMD_FATAL_ERROR(cctx);
- }
- i = res->count;
- ret = fill_grent(cctx->creq->out,
- dctx->domain,
- nctx, false,
- res->msgs, 1, &i);
- if (ret == ENOENT) {
- ret = fill_empty(cctx->creq->out);
- }
- sss_packet_set_error(cctx->creq->out, ret);
+ return EOK;
}
- sss_cmd_done(cctx, cmdctx);
+ DEBUG(2, ("No matching domain found for [%s], fail!\n", name));
+ return ENOENT;
}
static void nss_cmd_getgrnam_dp_callback(uint16_t err_maj, uint32_t err_min,
@@ -1736,7 +1730,6 @@ static void nss_cmd_getgrnam_dp_callback(uint16_t err_maj, uint32_t err_min,
struct nss_dom_ctx *dctx = talloc_get_type(ptr, struct nss_dom_ctx);
struct nss_cmd_ctx *cmdctx = dctx->cmdctx;
struct cli_ctx *cctx = cmdctx->cctx;
- struct sysdb_ctx *sysdb;
int ret;
if (err_maj) {
@@ -1745,39 +1738,33 @@ static void nss_cmd_getgrnam_dp_callback(uint16_t err_maj, uint32_t err_min,
"Will try to return what we have in cache\n",
(unsigned int)err_maj, (unsigned int)err_min, err_msg));
- if (!dctx->res) {
- /* return 0 results */
- dctx->res = talloc_zero(dctx, struct ldb_result);
- if (!dctx->res) {
- ret = ENOMEM;
- goto done;
- }
+ if (dctx->res && dctx->res->count == 1) {
+ ret = nss_cmd_getgr_send_reply(dctx, false);
+ goto done;
}
- nss_cmd_getgrnam_callback(dctx, LDB_SUCCESS, dctx->res);
- return;
+ /* no previous results, just loop to next domain if possible */
+ if (dctx->domain->next && cmdctx->check_next) {
+ dctx->domain = dctx->domain->next;
+ dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider);
+ } else {
+ /* nothing vailable */
+ ret = ENOENT;
+ goto done;
+ }
}
- ret = sysdb_get_ctx_from_list(cctx->rctx->db_list,
- dctx->domain, &sysdb);
- if (ret != EOK) {
- DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n"));
- NSS_CMD_FATAL_ERROR(cctx);
+ /* ok the backend returned, search to see if we have updated results */
+ ret = nss_cmd_getgrnam_search(dctx);
+ if (ret == EOK) {
+ /* we have results to return */
+ ret = nss_cmd_getgr_send_reply(dctx, false);
}
- ret = sysdb_getgrnam(cmdctx, sysdb,
- dctx->domain, cmdctx->name,
- nss_cmd_getgrnam_callback, dctx);
done:
- if (ret != EOK) {
- DEBUG(1, ("Failed to make request to our cache! (%d [%s])\n",
- ret, strerror(ret)));
-
- ret = nss_cmd_send_error(cmdctx, ret);
- if (ret != EOK) {
- NSS_CMD_FATAL_ERROR(cctx);
- }
- sss_cmd_done(cctx, cmdctx);
+ ret = nss_cmd_done(cmdctx, ret);
+ if (ret) {
+ NSS_CMD_FATAL_ERROR(cctx);
}
}
@@ -1785,18 +1772,11 @@ static int nss_cmd_getgrnam(struct cli_ctx *cctx)
{
struct nss_cmd_ctx *cmdctx;
struct nss_dom_ctx *dctx;
- struct sss_domain_info *dom;
- struct sysdb_ctx *sysdb;
- struct nss_ctx *nctx;
const char *rawname;
char *domname;
uint8_t *body;
size_t blen;
int ret;
- int ncret;
- bool neghit = false;
-
- nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx);
cmdctx = talloc_zero(cctx, struct nss_cmd_ctx);
if (!cmdctx) {
@@ -1839,92 +1819,23 @@ static int nss_cmd_getgrnam(struct cli_ctx *cctx)
ret = ENOENT;
goto done;
}
-
- /* verify this user has not yet been negatively cached,
- * or has been permanently filtered */
- ncret = nss_ncache_check_group(nctx->ncache, nctx->neg_timeout,
- dctx->domain->name, cmdctx->name);
- if (ncret == EEXIST) {
- neghit = true;
- }
- }
- else {
- /* skip domains that require FQnames or have negative caches */
- for (dom = cctx->rctx->domains; dom; dom = dom->next) {
-
- if (dom->fqnames) continue;
-
- /* verify this user has not yet been negatively cached,
- * or has been permanently filtered */
- ncret = nss_ncache_check_group(nctx->ncache, nctx->neg_timeout,
- dom->name, cmdctx->name);
- if (ncret == ENOENT) break;
-
- neghit = true;
- }
- /* reset neghit if we still have a domain to check */
- if (dom) neghit = false;
-
- dctx->domain = dom;
- }
- if (neghit) {
- DEBUG(2, ("Group [%s] does not exist! (negative cache)\n", rawname));
- ret = ENOENT;
- goto done;
- }
- if (dctx->domain == NULL) {
- DEBUG(2, ("No matching domain found for [%s], fail!\n", rawname));
- ret = ENOENT;
- goto done;
- }
-
- dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider);
-
- if (!domname) {
+ } else {
/* this is a multidomain search */
+ dctx->domain = cctx->rctx->domains;
cmdctx->check_next = true;
}
- DEBUG(4, ("Requesting info for [%s@%s]\n",
- cmdctx->name, dctx->domain->name));
+ dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider);
- ret = sysdb_get_ctx_from_list(cctx->rctx->db_list,
- dctx->domain, &sysdb);
- if (ret != EOK) {
- DEBUG(0, ("Fatal: Sysdb CTX not found for this domain!\n"));
- ret = EFAULT;
- goto done;
- }
- ret = sysdb_getgrnam(cmdctx, sysdb,
- dctx->domain, cmdctx->name,
- nss_cmd_getgrnam_callback, dctx);
- if (ret != EOK) {
- DEBUG(1, ("Failed to make request to our cache!\n"));
+ /* ok, find it ! */
+ ret = nss_cmd_getgrnam_search(dctx);
+ if (ret == EOK) {
+ /* we have results to return */
+ ret = nss_cmd_getgr_send_reply(dctx, false);
}
done:
- if (ret != EOK) {
- if (ret == ENOENT) {
- /* we do not have any entry to return */
- ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t),
- sss_packet_get_cmd(cctx->creq->in),
- &cctx->creq->out);
- if (ret == EOK) {
- sss_packet_get_body(cctx->creq->out, &body, &blen);
- ((uint32_t *)body)[0] = 0; /* 0 results */
- ((uint32_t *)body)[1] = 0; /* reserved */
- }
- }
- if (ret != EOK) {
- ret = nss_cmd_send_error(cmdctx, ret);
- }
- if (ret == EOK) {
- sss_cmd_done(cctx, cmdctx);
- }
- return ret;
- }
-
- return EOK;
+ return nss_cmd_done(cmdctx, ret);
}
static void nss_cmd_getgrgid_dp_callback(uint16_t err_maj, uint32_t err_min,
generated by cgit (git 2.34.1) at 2024-11-19 04:28:19 +0000