diff options
Diffstat (limited to 'ggsn/ggsn.c')
| -rw-r--r-- | ggsn/ggsn.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/ggsn/ggsn.c b/ggsn/ggsn.c index 67d040f..29d8473 100644 --- a/ggsn/ggsn.c +++ b/ggsn/ggsn.c @@ -432,6 +432,20 @@ static void process_pco(struct apn_ctx *apn, struct pdp_t *pdp) msgb_free(msg); } +static bool apn_supports_ipv4(const struct apn_ctx *apn) +{ + if (apn->v4.cfg.static_prefix.addr.len || apn->v4.cfg.dynamic_prefix.addr.len) + return true; + return false; +} + +static bool apn_supports_ipv6(const struct apn_ctx *apn) +{ + if (apn->v6.cfg.static_prefix.addr.len || apn->v6.cfg.dynamic_prefix.addr.len) + return true; + return false; +} + int create_context_ind(struct pdp_t *pdp) { static char name_buf[256]; @@ -483,6 +497,10 @@ int create_context_ind(struct pdp_t *pdp) } if (addr.len == sizeof(struct in_addr)) { + /* does this APN actually have an IPv4 pool? */ + if (!apn_supports_ipv4(apn)) + goto err_wrong_af; + rc = ippool_newip(apn->v4.pool, &member, &addr, 0); if (rc < 0) goto err_pool_full; @@ -496,6 +514,11 @@ int create_context_ind(struct pdp_t *pdp) } } else if (addr.len == sizeof(struct in6_addr)) { struct in46_addr tmp; + + /* does this APN actually have an IPv6 pool? */ + if (!apn_supports_ipv6(apn)) + goto err_wrong_af; + rc = ippool_newip(apn->v6.pool, &member, &addr, 0); if (rc < 0) goto err_pool_full; @@ -534,6 +557,11 @@ err_pool_full: LOGPPDP(LOGL_ERROR, pdp, "Cannot allocate IP address from pool (full!)\n"); gtp_create_context_resp(gsn, pdp, -rc); return 0; /* Already in use, or no more available */ + +err_wrong_af: + LOGPPDP(LOGL_ERROR, pdp, "APN doesn't support requested EUA / AF type\n"); + gtp_create_context_resp(gsn, pdp, GTPCAUSE_UNKNOWN_PDP); + return 0; } /* Internet-originated IP packet, needs to be sent via GTP towards MS */ |