Review at  https://gerrit.osmocom.org/4310

add hlr_subsrc_nam to put GSUP client notification in proper API

This code should not live in a CTRL interface function but be proper hlr_* API.

Change-Id: I4c9b8f9ad51d49517474e8b51afc3cc2e1c9299a
---
M src/ctrl.c
M src/db.h
M src/db_hlr.c
3 files changed, 53 insertions(+), 15 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-hlr refs/changes/10/4310/1

diff --git a/src/ctrl.c b/src/ctrl.c
index 74172c4..3bd4d8f 100644
--- a/src/ctrl.c
+++ b/src/ctrl.c
@@ -35,31 +35,19 @@
 
 static int handle_cmd_ps(struct hlr *ctx, struct ctrl_cmd *cmd, bool enable)
 {
-       struct lu_operation *luop = NULL;
-       struct osmo_gsup_conn *co;
+       struct hlr_subscriber subscr;
 
-       if (db_subscr_get_by_imsi(ctx->dbc, cmd->value, NULL) < 0) {
+       if (db_subscr_get_by_imsi(ctx->dbc, cmd->value, &subscr) < 0) {
                cmd->reply = "Subscriber Unknown in HLR";
                return CTRL_CMD_ERROR;
        }
 
-       if (db_subscr_nam(ctx->dbc, cmd->value, enable, true) < 0) {
+       if (hlr_subscr_nam(ctx, &subscr, enable, true) < 0) {
                cmd->reply = "Error updating DB";
                return CTRL_CMD_ERROR;
        }
 
-       /* FIXME: only send to single SGSN where latest update for IMSI came 
from */
-       if (!enable) {
-               llist_for_each_entry(co, &ctx->gs->clients, list) {
-                       luop = lu_op_alloc_conn(co);
-                       lu_op_fill_subscr(luop, ctx->dbc, cmd->value);
-                       lu_op_tx_del_subscr_data(luop);
-                       lu_op_free(luop);
-               }
-       }
-
        cmd->reply = "OK";
-
        return CTRL_CMD_REPLY;
 }
 
diff --git a/src/db.h b/src/db.h
index f6aaa58..dcffe5a 100644
--- a/src/db.h
+++ b/src/db.h
@@ -125,3 +125,5 @@
 
 int db_subscr_purge(struct db_context *dbc, const char *by_imsi,
                    bool purge_val, bool is_ps);
+
+int hlr_subscr_nam(struct hlr *hlr, struct hlr_subscriber *subscr, bool 
nam_val, bool is_ps);
diff --git a/src/db_hlr.c b/src/db_hlr.c
index cf6e4f8..088a0ee 100644
--- a/src/db_hlr.c
+++ b/src/db_hlr.c
@@ -609,3 +609,51 @@
 
        return ret;
 }
+
+/*! Update subscriber database and trigger notifications to GSUP clients.
+ * \param hlr     Global hlr context.
+ * \param subscr  Subscriber from a fresh db_subscr_get_by_*() call.
+ * \param nam_val True to enable CS/PS, false to disable.
+ * \param is_ps   True to enable/disable PS, false for CS.
+ * \returns 0 on success, ENOEXEC if there is no need to change, a negative
+ *          value on error.
+ */
+int hlr_subscr_nam(struct hlr *hlr, struct hlr_subscriber *subscr, bool 
nam_val, bool is_ps)
+{
+       int rc;
+        struct lu_operation *luop;
+        struct osmo_gsup_conn *co;
+       bool is_val = is_ps? subscr->nam_ps : subscr->nam_cs;
+
+       if (is_val == nam_val) {
+               LOGHLR(subscr->imsi, LOGL_DEBUG, "Already the requested value 
when asked to %s %s\n",
+                      nam_val ? "enable" : "disable", is_ps ? "PS" : "CS");
+               return ENOEXEC;
+       }
+
+       rc = db_subscr_nam(hlr->dbc, subscr->imsi, nam_val, is_ps);
+       if (rc)
+               return rc > 0? -rc : rc;
+
+       /* If we're disabling, send a notice out to the GSUP client that is
+        * responsible. Otherwise no need. */
+       if (nam_val)
+               return 0;
+
+       /* FIXME: only send to single SGSN where latest update for IMSI came 
from */
+       llist_for_each_entry(co, &hlr->gs->clients, list) {
+               luop = lu_op_alloc_conn(co);
+               if (!luop) {
+                       LOGHLR(subscr->imsi, LOGL_ERROR,
+                              "Cannot notify GSUP client, cannot allocate 
lu_operation,"
+                              " for %s:%u\n",
+                              co && co->conn && co->conn->server? 
co->conn->server->addr : "unset",
+                              co && co->conn && co->conn->server? 
co->conn->server->port : 0);
+                       continue;
+               }
+               lu_op_fill_subscr(luop, ctx->dbc, cmd->value);
+               lu_op_tx_del_subscr_data(luop);
+               lu_op_free(luop);
+       }
+       return 0;
+}

-- 
To view, visit https://gerrit.osmocom.org/4310
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I4c9b8f9ad51d49517474e8b51afc3cc2e1c9299a
Gerrit-PatchSet: 1
Gerrit-Project: osmo-hlr
Gerrit-Branch: master
Gerrit-Owner: Neels Hofmeyr <[email protected]>

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