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tools: gtp-tunnel: simplify this by using gtp_list_tunnel() 

gtp_list_tunnel() is exported through the library, so use it instead of
opencode. This is a left-over from the early stage of development of
libgtpnl.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2016-05-08 18:48:25 +02:00
parent 6ae67dfe2c
commit 9438f72cc4
1 changed files with 3 additions and 81 deletions
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84
tools/gtp-tunnel.c
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@ -1,6 +1,8 @@
/* Command line utility to create GTP tunnels (PDP contexts) */
/* (C) 2014 by sysmocom - s.f.m.c. GmbH
* (C) 2016 by Pablo Neira Ayuso <pablo@netfilter.org>
*
* Author: Pablo Neira Ayuso <pablo@gnumonks.org>
*
* All Rights Reserved
@ -163,90 +165,10 @@ struct gtp_pdp {
struct in_addr ms_addr;
};
static int genl_gtp_validate_cb(const struct nlattr *attr, void *data)
{
const struct nlattr **tb = data;
int type = mnl_attr_get_type(attr);
if (mnl_attr_type_valid(attr, CTRL_ATTR_MAX) < 0)
return MNL_CB_OK;
switch(type) {
case GTPA_TID:
if (mnl_attr_validate(attr, MNL_TYPE_U64) < 0) {
perror("mnl_attr_validate");
return MNL_CB_ERROR;
}
break;
case GTPA_I_TEI:
case GTPA_O_TEI:
case GTPA_SGSN_ADDRESS:
case GTPA_MS_ADDRESS:
case GTPA_VERSION:
if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0) {
perror("mnl_attr_validate");
return MNL_CB_ERROR;
}
break;
default:
break;
}
tb[type] = attr;
return MNL_CB_OK;
}
static int genl_gtp_attr_cb(const struct nlmsghdr *nlh, void *data)
{
struct nlattr *tb[GTPA_MAX + 1] = {};
struct gtp_pdp pdp = {};
struct genlmsghdr *genl;
mnl_attr_parse(nlh, sizeof(*genl), genl_gtp_validate_cb, tb);
if (tb[GTPA_TID])
pdp.u.v0.tid = mnl_attr_get_u64(tb[GTPA_TID]);
if (tb[GTPA_I_TEI])
pdp.u.v1.i_tei = mnl_attr_get_u32(tb[GTPA_I_TEI]);
if (tb[GTPA_O_TEI])
pdp.u.v1.o_tei = mnl_attr_get_u32(tb[GTPA_O_TEI]);
if (tb[GTPA_SGSN_ADDRESS]) {
pdp.sgsn_addr.s_addr =
mnl_attr_get_u32(tb[GTPA_SGSN_ADDRESS]);
}
if (tb[GTPA_MS_ADDRESS]) {
pdp.ms_addr.s_addr = mnl_attr_get_u32(tb[GTPA_MS_ADDRESS]);
}
if (tb[GTPA_VERSION]) {
pdp.version = mnl_attr_get_u32(tb[GTPA_VERSION]);
}
printf("version %u ", pdp.version);
if (pdp.version == GTP_V0)
printf("tid %"PRIu64" ms_addr %s ",
pdp.u.v0.tid, inet_ntoa(pdp.ms_addr));
else if (pdp.version == GTP_V1)
printf("tei %u/%u ms_addr %s ", pdp.u.v1.i_tei,
pdp.u.v1.o_tei, inet_ntoa(pdp.ms_addr));
printf("sgsn_addr %s\n", inet_ntoa(pdp.sgsn_addr));
return MNL_CB_OK;
}
static int
list_tunnel(int argc, char *argv[], int genl_id, struct mnl_socket *nl)
{
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
uint32_t seq = time(NULL);
nlh = genl_nlmsg_build_hdr(buf, genl_id, NLM_F_DUMP, 0,
GTP_CMD_GETPDP);
if (genl_socket_talk(nl, nlh, seq, genl_gtp_attr_cb, NULL) < 0) {
perror("genl_socket_talk");
return 0;
}
return 0;
return gtp_list_tunnel(genl_id, nl);
}
int main(int argc, char *argv[])