Change in ...osmo-ggsn[master]: ggsn_vty.c: Fix wrong use of in46a_from_eua, print IPv6 euas

[pespin]

pespin has uploaded this change for review. ( 
https://gerrit.osmocom.org/c/osmo-ggsn/+/15248


Change subject: ggsn_vty.c: Fix wrong use of in46a_from_eua, print IPv6 euas
......................................................................

ggsn_vty.c: Fix wrong use of in46a_from_eua, print IPv6 euas

in46a_from_eua() API documentation clearly states an array of 2 items
should be passed as pointer, but show_one_pdp() was passing only one,
which would end up in out-of-bounds writes on v4v6 EUAs.

Let's better use ippool to print allocated ip addresses instead of
parsing EUAs we sent some point in the past.

Related OS#4154
Change-Id: Ia34939957bb7856388cb52a741cec0c015a08c70
---
M ggsn/ggsn_vty.c
1 file changed, 7 insertions(+), 3 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/osmo-ggsn refs/changes/48/15248/1

diff --git a/ggsn/ggsn_vty.c b/ggsn/ggsn_vty.c
index eb7cca7..0a86f49 100644
--- a/ggsn/ggsn_vty.c
+++ b/ggsn/ggsn_vty.c
@@ -734,7 +734,7 @@

 static void show_one_pdp(struct vty *vty, struct pdp_t *pdp)
 {
-       struct in46_addr eua46;
+       struct ippoolm_t *peer;
        char name_buf[256];
        char *apn_name;
        int rc;
@@ -757,8 +757,12 @@
        apn_name = osmo_apn_to_str(name_buf, pdp->apn_use.v, pdp->apn_use.l);
        vty_out(vty, " APN in use: %s%s", apn_name ? name_buf : "(NONE)", 
VTY_NEWLINE);

-       in46a_from_eua(&pdp->eua, &eua46);
-       vty_out(vty, " End-User Address: %s%s", in46a_ntoa(&eua46), 
VTY_NEWLINE);
+       if ((peer = pdp_get_peer_ipv(pdp, false)))
+               vty_out(vty, " End-User Address (IPv4): %s%s",
+                       in46a_ntop(&peer->addr, name_buf, sizeof(name_buf)), 
VTY_NEWLINE);
+       if ((peer = pdp_get_peer_ipv(pdp, true)))
+               vty_out(vty, " End-User Address (IPv6): %s%s",
+                       in46a_ntop(&peer->addr, name_buf, sizeof(name_buf)), 
VTY_NEWLINE);
        vty_out(vty, " Transmit GTP Sequence Number for G-PDU: %s%s",
                pdp->tx_gpdu_seq ? "Yes" : "No", VTY_NEWLINE);
 }

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Gerrit-Project: osmo-ggsn
Gerrit-Branch: master
Gerrit-Change-Id: Ia34939957bb7856388cb52a741cec0c015a08c70
Gerrit-Change-Number: 15248
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pes...@sysmocom.de>
Gerrit-MessageType: newchange