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-rw-r--r--src/responder/nss/nsssrv_cmd.c288
1 files changed, 116 insertions, 172 deletions
diff --git a/src/responder/nss/nsssrv_cmd.c b/src/responder/nss/nsssrv_cmd.c
index 508f3345..32ee2988 100644
--- a/src/responder/nss/nsssrv_cmd.c
+++ b/src/responder/nss/nsssrv_cmd.c
@@ -927,104 +927,116 @@ done:
* - use mutexes so that setpwent() can return immediately
* even if the data is still being fetched
* - make getpwent() wait on the mutex
+ *
+ * Alternatively:
+ * - use a smarter search mechanism that keeps track of the
+ * last user searched and return the next X users doing
+ * an alphabetic sort and starting from the user following
+ * the last returned user.
*/
static int nss_cmd_getpwent_immediate(struct nss_cmd_ctx *cmdctx);
-static void nss_cmd_setpw_dp_callback(uint16_t err_maj, uint32_t err_min,
- const char *err_msg, void *ptr);
+static void nss_cmd_getpwent_dp_callback(uint16_t err_maj, uint32_t err_min,
+ const char *err_msg, void *ptr);
-static void nss_cmd_setpwent_callback(void *ptr, int status,
- struct ldb_result *res)
+static int nss_cmd_getpwent_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;
struct sysdb_ctx *sysdb;
+ struct ldb_result *res;
struct getent_ctx *pctx;
struct nss_ctx *nctx;
int timeout;
int ret;
- if (status != LDB_SUCCESS) {
- ret = nss_cmd_send_error(cmdctx, ENOENT);
- if (ret != EOK) {
- NSS_CMD_FATAL_ERROR(cctx);
- }
- sss_cmd_done(cctx, cmdctx);
- return;
- }
-
nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx);
pctx = nctx->pctx;
if (pctx == NULL) {
pctx = talloc_zero(nctx, struct getent_ctx);
if (!pctx) {
- ret = nss_cmd_send_error(cmdctx, ENOMEM);
- if (ret != EOK) {
- NSS_CMD_FATAL_ERROR(cctx);
- }
- sss_cmd_done(cctx, cmdctx);
- return;
+ return ENOMEM;
}
nctx->pctx = pctx;
}
- pctx->doms = talloc_realloc(pctx, pctx->doms, struct dom_ctx, pctx->num +1);
- if (!pctx->doms) {
- talloc_free(pctx);
- nctx->pctx = NULL;
- NSS_CMD_FATAL_ERROR(cctx);
- }
+ while (dom) {
+ while (dom && dom->enumerate == 0) {
+ dom = dom->next;
+ }
- pctx->doms[pctx->num].domain = dctx->domain;
- pctx->doms[pctx->num].res = talloc_steal(pctx->doms, res);
- pctx->doms[pctx->num].cur = 0;
+ if (!dom) break;
- pctx->num++;
+ if (dom != dctx->domain) {
+ /* make sure we reset the check_provider flag when we check
+ * a new domain */
+ if (cmdctx->enum_cached) {
+ dctx->check_provider = false;
+ } else {
+ dctx->check_provider = NEED_CHECK_PROVIDER(dom->provider);
+ }
+ }
- /* do not reply until all domain searches are done */
- for (dom = dctx->domain->next; dom; dom = dom->next) {
- if (dom->enumerate != 0) break;
- }
- dctx->domain = dom;
+ /* make sure to update the dctx if we changed domain */
+ dctx->domain = dom;
- if (dctx->domain != NULL) {
- if (cmdctx->enum_cached) {
- dctx->check_provider = false;
- } else {
- dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider);
+ DEBUG(4, ("Requesting info for domain [%s]\n", dom->name));
+
+ 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;
}
+ /* 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) {
+ dctx->check_provider = false;
timeout = SSS_CLI_SOCKET_TIMEOUT;
ret = sss_dp_send_acct_req(cctx->rctx, cmdctx,
- nss_cmd_setpw_dp_callback, dctx,
+ nss_cmd_getpwent_dp_callback, dctx,
timeout, dom->name, true,
SSS_DP_USER, NULL, 0);
- } else {
- 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);
+ if (ret == EOK) {
+ return ret;
+ } else {
+ DEBUG(2, ("Enum Cache refresh for domain [%s] failed."
+ " Trying to return what we have in cache!\n",
+ dom->name));
}
- ret = sysdb_enumpwent(dctx, sysdb,
- dctx->domain, NULL,
- nss_cmd_setpwent_callback, dctx);
}
+
+ ret = sysdb_enumpwent(dctx, sysdb, dctx->domain, &res);
if (ret != EOK) {
- /* FIXME: shutdown ? */
- DEBUG(1, ("Failed to send enumeration request for domain [%s]!\n",
+ DEBUG(1, ("Enum from cache failed, skipping domain [%s]\n",
dom->name));
+ dom = dom->next;
+ continue;
+ }
- ret = nss_cmd_send_error(cmdctx, ret);
- if (ret != EOK) {
- NSS_CMD_FATAL_ERROR(cctx);
- }
- sss_cmd_done(cctx, cmdctx);
+ if (res->count == 0) {
+ DEBUG(4, ("Domain [%s] has no users, skipping.\n", dom->name));
+ dom = dom->next;
+ continue;
}
- return;
+
+ pctx->doms = talloc_realloc(pctx, pctx->doms,
+ struct dom_ctx, pctx->num +1);
+ if (!pctx->doms) {
+ talloc_free(pctx);
+ nctx->pctx = NULL;
+ return ENOMEM;
+ }
+
+ pctx->doms[pctx->num].domain = dctx->domain;
+ pctx->doms[pctx->num].res = talloc_steal(pctx->doms, res);
+ pctx->doms[pctx->num].cur = 0;
+
+ pctx->num++;
+
+ /* do not reply until all domain searches are done */
+ dom = dom->next;
}
/* set cache mark */
@@ -1033,28 +1045,25 @@ static void nss_cmd_setpwent_callback(void *ptr, int status,
if (cmdctx->immediate) {
/* this was a getpwent call w/o setpwent,
* return immediately one result */
- ret = nss_cmd_getpwent_immediate(cmdctx);
- if (ret != EOK) NSS_CMD_FATAL_ERROR(cctx);
- return;
+ return nss_cmd_getpwent_immediate(cmdctx);
}
/* 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);
+ if (ret == EOK) {
+ sss_cmd_done(cctx, cmdctx);
}
- sss_cmd_done(cctx, cmdctx);
+ return ret;
}
-static void nss_cmd_setpw_dp_callback(uint16_t err_maj, uint32_t err_min,
- const char *err_msg, void *ptr)
+static void nss_cmd_getpwent_dp_callback(uint16_t err_maj, uint32_t err_min,
+ const char *err_msg, void *ptr)
{
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) {
@@ -1064,37 +1073,20 @@ static void nss_cmd_setpw_dp_callback(uint16_t err_maj, uint32_t err_min,
(unsigned int)err_maj, (unsigned int)err_min, err_msg));
}
- 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_enumpwent(cmdctx, sysdb,
- dctx->domain, NULL,
- nss_cmd_setpwent_callback, dctx);
- if (ret != EOK) {
- DEBUG(1, ("Failed to make request to our cache!\n"));
+ ret = nss_cmd_getpwent_search(dctx);
- ret = nss_cmd_send_error(cmdctx, ret);
- if (ret != EOK) {
- NSS_CMD_FATAL_ERROR(cctx);
- }
- sss_cmd_done(cctx, cmdctx);
+ if (ret) {
+ NSS_CMD_FATAL_ERROR(cctx);
}
}
static int nss_cmd_setpwent_ext(struct cli_ctx *cctx, bool immediate)
{
struct sss_domain_info *dom;
- struct sysdb_ctx *sysdb;
struct nss_cmd_ctx *cmdctx;
struct nss_dom_ctx *dctx;
struct nss_ctx *nctx;
time_t now = time(NULL);
- int timeout;
- uint8_t *body;
- size_t blen;
int ret;
DEBUG(4, ("Requesting info for all users\n"));
@@ -1119,8 +1111,7 @@ static int nss_cmd_setpwent_ext(struct cli_ctx *cctx, bool immediate)
/* do not query backends if we have a recent enumeration */
if (nctx->enum_cache_timeout) {
- if (nctx->last_user_enum +
- nctx->enum_cache_timeout > now) {
+ if (nctx->last_user_enum + nctx->enum_cache_timeout > now) {
cmdctx->enum_cached = true;
}
}
@@ -1133,71 +1124,25 @@ static int nss_cmd_setpwent_ext(struct cli_ctx *cctx, bool immediate)
if (dctx->domain == NULL) {
DEBUG(2, ("Enumeration disabled on all domains!\n"));
- ret = ENOENT;
+ if (cmdctx->immediate) {
+ ret = ENOENT;
+ } else {
+ ret = sss_packet_new(cctx->creq, 0,
+ sss_packet_get_cmd(cctx->creq->in),
+ &cctx->creq->out);
+ if (ret == EOK) {
+ sss_cmd_done(cctx, cmdctx);
+ }
+ }
goto done;
}
- if (cmdctx->enum_cached) {
- dctx->check_provider = false;
- } else {
- dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider);
- }
-
- if (dctx->check_provider) {
- timeout = SSS_CLI_SOCKET_TIMEOUT;
- ret = sss_dp_send_acct_req(cctx->rctx, cmdctx,
- nss_cmd_setpw_dp_callback, dctx,
- timeout, dom->name, true,
- SSS_DP_USER, NULL, 0);
- } else {
- 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_enumpwent(dctx, sysdb,
- dctx->domain, NULL,
- nss_cmd_setpwent_callback, dctx);
- }
- if (ret != EOK) {
- /* FIXME: shutdown ? */
- DEBUG(1, ("Failed to send enumeration request for domain [%s]!\n",
- dom->name));
- }
+ dctx->check_provider = NEED_CHECK_PROVIDER(dctx->domain->provider);
+ /* ok, start the searches */
+ ret = nss_cmd_getpwent_search(dctx);
done:
- if (ret != EOK) {
- if (ret == ENOENT) {
- if (cmdctx->immediate) {
- /* 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 */
- }
- }
- else {
- /* create response packet */
- ret = sss_packet_new(cctx->creq, 0,
- sss_packet_get_cmd(cctx->creq->in),
- &cctx->creq->out);
- }
- }
- 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 int nss_cmd_setpwent(struct cli_ctx *cctx)
@@ -1213,40 +1158,42 @@ static int nss_cmd_retpwent(struct cli_ctx *cctx, int num)
struct ldb_message **msgs = NULL;
struct dom_ctx *pdom = NULL;
int n = 0;
- int ret;
+ int ret = ENOENT;
nctx = talloc_get_type(cctx->rctx->pvt_ctx, struct nss_ctx);
- pctx = nctx->pctx;
+ if (!nctx->pctx) goto none;
-retry:
- if (pctx->cur >= pctx->num) goto none;
+ pctx = nctx->pctx;
- pdom = &pctx->doms[pctx->cur];
+ while (ret == ENOENT) {
+ if (pctx->cur >= pctx->num) break;
- n = pdom->res->count - pdom->cur;
- if (n == 0 && (pctx->cur+1 < pctx->num)) {
- pctx->cur++;
pdom = &pctx->doms[pctx->cur];
+
n = pdom->res->count - pdom->cur;
- }
+ if (n == 0 && (pctx->cur+1 < pctx->num)) {
+ pctx->cur++;
+ pdom = &pctx->doms[pctx->cur];
+ n = pdom->res->count - pdom->cur;
+ }
- if (!n) goto none;
+ if (!n) break;
- if (n > num) n = num;
+ if (n > num) n = num;
- msgs = &(pdom->res->msgs[pdom->cur]);
- pdom->cur += n;
+ msgs = &(pdom->res->msgs[pdom->cur]);
+ pdom->cur += n;
- ret = fill_pwent(cctx->creq->out, pdom->domain, nctx, true, msgs, n);
- if (ret == ENOENT) goto retry;
- return ret;
+ ret = fill_pwent(cctx->creq->out, pdom->domain, nctx, true, msgs, n);
+ }
none:
- return fill_empty(cctx->creq->out);
+ if (ret == ENOENT) {
+ ret = fill_empty(cctx->creq->out);
+ }
+ return ret;
}
-/* used only if a process calls getpwent() without first calling setpwent()
- */
static int nss_cmd_getpwent_immediate(struct nss_cmd_ctx *cmdctx)
{
struct cli_ctx *cctx = cmdctx->cctx;
@@ -1289,9 +1236,6 @@ static int nss_cmd_getpwent(struct cli_ctx *cctx)
/* see if we need to trigger an implicit setpwent() */
if (nctx->pctx == NULL) {
- nctx->pctx = talloc_zero(nctx, struct getent_ctx);
- if (!nctx->pctx) return ENOMEM;
-
return nss_cmd_setpwent_ext(cctx, true);
}
generated by cgit (git 2.34.1) at 2024-11-26 06:32:11 +0000