pespin has uploaded this change for review. ( https://gerrit.osmocom.org/c/libosmo-sigtran/+/42039?usp=email )
Change subject: xua_rkm: Add checks for ASP role in rx msg path ......................................................................
xua_rkm: Add checks for ASP role in rx msg path
Change-Id: I672060c24571586b37102c7f7f60e4b0e20e07a9 --- M src/m3ua.c M src/xua_internal.h M src/xua_rkm.c 3 files changed, 30 insertions(+), 5 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/libosmo-sigtran refs/changes/39/42039/1
diff --git a/src/m3ua.c b/src/m3ua.c index e4173bd..cad7889 100644 --- a/src/m3ua.c +++ b/src/m3ua.c @@ -266,7 +266,7 @@ static const uint16_t dereg_rsp_ies[] = { M3UA_IEI_DEREG_RESULT, 0 }; -static const struct value_string m3ua_rkm_msgt_names[] = { +const struct value_string m3ua_rkm_msgt_names[] = { { M3UA_RKM_REG_REQ, "REG-REQ" }, { M3UA_RKM_REG_RSP, "REG-RESP" }, { M3UA_RKM_DEREG_REQ, "DEREG-REQ" }, diff --git a/src/xua_internal.h b/src/xua_internal.h index c5bd009..a2f0af6 100644 --- a/src/xua_internal.h +++ b/src/xua_internal.h @@ -135,6 +135,7 @@ extern struct osmo_fsm xua_default_lm_fsm; extern const struct value_string m3ua_rkm_reg_status_vals[]; extern const struct value_string m3ua_rkm_dereg_status_vals[]; +extern const struct value_string m3ua_rkm_msgt_names[];
int xua_as_transmit_msg(struct osmo_ss7_as *as, struct xua_msg *xua);
diff --git a/src/xua_rkm.c b/src/xua_rkm.c index 9713e3a..fabe116 100644 --- a/src/xua_rkm.c +++ b/src/xua_rkm.c @@ -561,6 +561,30 @@ return 0; }
+#define ENSURE_ASP_OR_IPSP(asp, xua) \ + do { \ + if (asp->cfg.role != OSMO_SS7_ASP_ROLE_ASP && \ + asp->cfg.role != OSMO_SS7_ASP_ROLE_IPSP) { \ + LOGPASP(asp, DLSS7, LOGL_ERROR, "Rx %s not permitted in role %s\n", \ + get_value_string(m3ua_rkm_msgt_names, xua->hdr.msg_type), \ + get_value_string(osmo_ss7_asp_role_names, asp->cfg.role)); \ + xua_msg_free(xua); \ + return -1; \ + } \ + } while (0) + +#define ENSURE_SG_OR_IPSP(asp, xua) \ + do { \ + if (asp->cfg.role != OSMO_SS7_ASP_ROLE_SG && \ + asp->cfg.role != OSMO_SS7_ASP_ROLE_IPSP) { \ + LOGPASP(asp, DLSS7, LOGL_ERROR, "Rx %s not permitted in role %s\n", \ + get_value_string(m3ua_rkm_msgt_names, xua->hdr.msg_type), \ + get_value_string(osmo_ss7_asp_role_names, asp->cfg.role)); \ + xua_msg_free(xua); \ + return -1; \ + } \ + } while (0) + /* process an incoming RKM message in xua format * This function takes ownership of xua msg passed to it. */ int m3ua_rx_rkm(struct osmo_ss7_asp *asp, struct xua_msg *xua) @@ -570,20 +594,20 @@ switch (xua->hdr.msg_type) { /* SG Side */ case M3UA_RKM_REG_REQ: - /* TOOD: ensure we are role SG */ + ENSURE_SG_OR_IPSP(asp, xua); rc = m3ua_rx_rkm_reg_req(asp, xua); break; case M3UA_RKM_DEREG_REQ: - /* TOOD: ensure we are role SG */ + ENSURE_SG_OR_IPSP(asp, xua); rc = m3ua_rx_rkm_dereg_req(asp, xua); break; /* ASP Side */ case M3UA_RKM_REG_RSP: - /* TOOD: ensure we are role ASP */ + ENSURE_ASP_OR_IPSP(asp, xua); rc = m3ua_rx_rkm_reg_rsp(asp, xua); break; case M3UA_RKM_DEREG_RSP: - /* TOOD: ensure we are role ASP */ + ENSURE_ASP_OR_IPSP(asp, xua); rc = m3ua_rx_rkm_dereg_rsp(asp, xua); break; default: