Change in libosmo-sccp[master]: add osmo_sccp_addr_to_id_c()

[neels]

neels has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmo-sccp/+/20260 )


Change subject: add osmo_sccp_addr_to_id_c()
......................................................................

add osmo_sccp_addr_to_id_c()

Change-Id: Iadd34a167a7712796b2501f6a75b5a8d26a828eb
---
M include/osmocom/sigtran/sccp_helpers.h
M src/sccp_helpers.c
2 files changed, 42 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/libosmo-sccp refs/changes/60/20260/1

diff --git a/include/osmocom/sigtran/sccp_helpers.h b/include/osmocom/sigtran/sccp_helpers.h
index 831307d..dc4e115 100644
--- a/include/osmocom/sigtran/sccp_helpers.h
+++ b/include/osmocom/sigtran/sccp_helpers.h
@@ -63,5 +63,9 @@
 			      const struct osmo_sccp_addr *addr);
 char *osmo_sccp_addr_to_str_c(void *ctx, const struct osmo_ss7_instance *ss7, const struct osmo_sccp_addr *addr);
 
+int osmo_sccp_addr_to_id_buf(char *buf, size_t buf_len, const struct osmo_ss7_instance *ss7,
+			      const struct osmo_sccp_addr *addr);
+char *osmo_sccp_addr_to_id_c(void *ctx, const struct osmo_ss7_instance *ss7, const struct osmo_sccp_addr *addr);
+
 char *osmo_sccp_addr_name(const struct osmo_ss7_instance *ss7, const struct osmo_sccp_addr *addr);
 char *osmo_sccp_inst_addr_name(const struct osmo_sccp_instance *sccp, const struct osmo_sccp_addr *addr);
diff --git a/src/sccp_helpers.c b/src/sccp_helpers.c
index fe1133f..70524a0 100644
--- a/src/sccp_helpers.c
+++ b/src/sccp_helpers.c
@@ -340,6 +340,44 @@
 	OSMO_NAME_C_IMPL(ctx, 64, "ERROR", osmo_sccp_addr_to_str_buf, ss7, addr)
 }
 
+/*! like osmo_sccp_addr_to_str_buf, but using only characters passing osmo_identifier_valid(). Useful for FSM and CTRL
+ * IDs.
+ *
+ * The advantage over using osmo_sccp_addr_to_str_buf() followed by osmo_identifier_sanitize_buf() is that here, the
+ * address elements are separated by ':', while osmo_identifier_sanitize_buf() would replace all characters with the
+ * same, e.g. '-'.
+ */
+int osmo_sccp_addr_to_id_buf(char *buf, size_t buf_len, const struct osmo_ss7_instance *ss7,
+			     const struct osmo_sccp_addr *addr)
+{
+	struct osmo_strbuf sb = { .buf = buf, .len = buf_len };
+	char ipbuf[INET6_ADDRSTRLEN];
+
+	OSMO_STRBUF_PRINTF(sb, "RI-%s", osmo_sccp_routing_ind_name(addr->ri));
+
+	if (addr->presence & OSMO_SCCP_ADDR_T_PC)
+		OSMO_STRBUF_PRINTF(sb, ":PC-%s", osmo_ss7_pointcode_print(ss7, addr->pc));
+	if (addr->presence & OSMO_SCCP_ADDR_T_SSN)
+		OSMO_STRBUF_PRINTF(sb, ":SSN-%s", osmo_sccp_ssn_name(addr->ssn));
+	if (addr->presence & OSMO_SCCP_ADDR_T_IPv4)
+		OSMO_STRBUF_PRINTF(sb, ":IP-%s", inet_ntop(AF_INET, &addr->ip.v4, ipbuf, sizeof(ipbuf)));
+	else if (addr->presence & OSMO_SCCP_ADDR_T_IPv6)
+		OSMO_STRBUF_PRINTF(sb, ":IP-%s", inet_ntop(AF_INET6, &addr->ip.v6, ipbuf, sizeof(ipbuf)));
+	if (addr->gt.gti != OSMO_SCCP_GTI_NO_GT || addr->presence & OSMO_SCCP_ADDR_T_GT)
+		OSMO_STRBUF_PRINTF(sb, ":GTI-%s", osmo_sccp_gti_name(addr->gt.gti));
+	if (addr->presence & OSMO_SCCP_ADDR_T_GT)
+		OSMO_STRBUF_PRINTF(sb, ":GT-%s", osmo_sccp_gt_dump(&addr->gt));
+
+	/* inet_ntop() and osmo_sccp_gt_dump() may have written non-id chars. */
+	osmo_identifier_sanitize_buf(buf, "", '-');
+	return sb.chars_needed;
+}
+
+char *osmo_sccp_addr_to_id_c(void *ctx, const struct osmo_ss7_instance *ss7, const struct osmo_sccp_addr *addr)
+{
+	OSMO_NAME_C_IMPL(ctx, 64, "ERROR", osmo_sccp_addr_to_id_buf, ss7, addr)
+}
+
 /* Rather use osmo_sccp_addr_to_str_buf() or osmo_sccp_addr_to_str_c() to not use a static buffer */
 char *osmo_sccp_addr_name(const struct osmo_ss7_instance *ss7, const struct osmo_sccp_addr *addr)
 {

-- 
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Gerrit-Project: libosmo-sccp
Gerrit-Branch: master
Gerrit-Change-Id: Iadd34a167a7712796b2501f6a75b5a8d26a828eb
Gerrit-Change-Number: 20260
Gerrit-PatchSet: 1
Gerrit-Owner: neels <nhofmeyr at sysmocom.de>
Gerrit-MessageType: newchange
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