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Diffstat (limited to 'openbsc/src/libmsc/smpp_smsc.c')
-rw-r--r--openbsc/src/libmsc/smpp_smsc.c93
1 files changed, 69 insertions, 24 deletions
diff --git a/openbsc/src/libmsc/smpp_smsc.c b/openbsc/src/libmsc/smpp_smsc.c
index c1ec22f5b..ef4277a52 100644
--- a/openbsc/src/libmsc/smpp_smsc.c
+++ b/openbsc/src/libmsc/smpp_smsc.c
@@ -931,39 +931,84 @@ static int smsc_fd_cb(struct osmo_fd *ofd, unsigned int what)
return link_accept_cb(ofd->data, rc, &sa, sa_len);
}
-/*! \brief Initialize the SMSC-side SMPP implementation */
-int smpp_smsc_init(struct smsc *smsc, uint16_t port)
+/*! \brief allocate and initialize an smsc struct from talloc context ctx. */
+struct smsc *smpp_smsc_alloc_init(void *ctx)
+{
+ struct smsc *smsc = talloc_zero(ctx, struct smsc);
+
+ INIT_LLIST_HEAD(&smsc->esme_list);
+ INIT_LLIST_HEAD(&smsc->acl_list);
+ INIT_LLIST_HEAD(&smsc->route_list);
+
+ smsc->listen_ofd.data = smsc;
+ smsc->listen_ofd.cb = smsc_fd_cb;
+
+ return smsc;
+}
+
+/*! \brief Set the SMPP address and port without binding. */
+int smpp_smsc_conf(struct smsc *smsc, const char *bind_addr, uint16_t port)
+{
+ talloc_free((void*)smsc->bind_addr);
+ smsc->bind_addr = NULL;
+ if (bind_addr) {
+ smsc->bind_addr = talloc_strdup(smsc, bind_addr);
+ if (!smsc->bind_addr)
+ return -ENOMEM;
+ }
+ smsc->listen_port = port;
+ return 0;
+}
+
+/*! \brief Bind to given address and port and accept connections.
+ * \param[in] bind_addr Local IP address, may be NULL for any.
+ * \param[in] port TCP port number, may be 0 for default SMPP (2775).
+ */
+int smpp_smsc_start(struct smsc *smsc, const char *bind_addr, uint16_t port)
{
int rc;
/* default port for SMPP */
- if (port == 0)
+ if (!port)
port = 2775;
- /* This will not work if we were to actually ever use FD 0
- * (stdin) for this ... */
- if (smsc->listen_ofd.fd <= 0) {
- INIT_LLIST_HEAD(&smsc->esme_list);
- INIT_LLIST_HEAD(&smsc->acl_list);
- INIT_LLIST_HEAD(&smsc->route_list);
- smsc->listen_ofd.data = smsc;
- smsc->listen_ofd.cb = smsc_fd_cb;
- } else {
- close(smsc->listen_ofd.fd);
- osmo_fd_unregister(&smsc->listen_ofd);
- }
+ smpp_smsc_stop(smsc);
+
+ LOGP(DSMPP, LOGL_NOTICE, "SMPP at %s %d\n",
+ bind_addr? bind_addr : "0.0.0.0", port);
rc = osmo_sock_init_ofd(&smsc->listen_ofd, AF_UNSPEC, SOCK_STREAM,
- IPPROTO_TCP, NULL, port,
+ IPPROTO_TCP, bind_addr, port,
OSMO_SOCK_F_BIND);
+ if (rc < 0)
+ return rc;
- /* if there is an error, try to re-bind to the old port */
- if (rc < 0) {
- rc = osmo_sock_init_ofd(&smsc->listen_ofd, AF_UNSPEC,
- SOCK_STREAM, IPPROTO_TCP, NULL,
- smsc->listen_port, OSMO_SOCK_F_BIND);
- } else
- smsc->listen_port = port;
-
+ /* store new address and port */
+ rc = smpp_smsc_conf(smsc, bind_addr, port);
+ if (rc)
+ smpp_smsc_stop(smsc);
return rc;
}
+
+/*! \brief Change a running connection to a different address/port, and upon
+ * error switch back to the running configuration. */
+int smpp_smsc_restart(struct smsc *smsc, const char *bind_addr, uint16_t port)
+{
+ int rc;
+
+ rc = smpp_smsc_start(smsc, bind_addr, port);
+ if (rc)
+ /* if there is an error, try to re-bind to the old port */
+ return smpp_smsc_start(smsc, smsc->bind_addr, smsc->listen_port);
+ return 0;
+}
+
+/*! /brief Close SMPP connection. */
+void smpp_smsc_stop(struct smsc *smsc)
+{
+ if (smsc->listen_ofd.fd > 0) {
+ close(smsc->listen_ofd.fd);
+ smsc->listen_ofd.fd = 0;
+ osmo_fd_unregister(&smsc->listen_ofd);
+ }
+}