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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* socket.c TIPC socket functionality.
*
* Authors: Richard Alpe <richard.alpe@ericsson.com>
*/
#include <stdio.h>
#include <errno.h>
#include <linux/tipc.h>
#include <linux/tipc_netlink.h>
#include <linux/genetlink.h>
#include <libmnl/libmnl.h>
#include "mnl_utils.h"
#include "cmdl.h"
#include "msg.h"
#include "socket.h"
#define PORTID_STR_LEN 45 /* Four u32 and five delimiter chars */
static int publ_list_cb(const struct nlmsghdr *nlh, void *data)
{
struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
struct nlattr *info[TIPC_NLA_MAX + 1] = {};
struct nlattr *attrs[TIPC_NLA_SOCK_MAX + 1] = {};
mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
if (!info[TIPC_NLA_PUBL])
return MNL_CB_ERROR;
mnl_attr_parse_nested(info[TIPC_NLA_PUBL], parse_attrs, attrs);
printf(" bound to {%u,%u,%u}\n",
mnl_attr_get_u32(attrs[TIPC_NLA_PUBL_TYPE]),
mnl_attr_get_u32(attrs[TIPC_NLA_PUBL_LOWER]),
mnl_attr_get_u32(attrs[TIPC_NLA_PUBL_UPPER]));
return MNL_CB_OK;
}
static int publ_list(uint32_t sock)
{
struct mnlu_gen_socket sock_nlg;
struct nlmsghdr *nlh;
struct nlattr *nest;
int err;
err = mnlu_gen_socket_open(&sock_nlg, TIPC_GENL_V2_NAME,
TIPC_GENL_V2_VERSION);
if (err)
return -1;
nlh = mnlu_gen_socket_cmd_prepare(&sock_nlg, TIPC_NL_PUBL_GET,
NLM_F_REQUEST | NLM_F_DUMP);
if (!nlh) {
fprintf(stderr, "error, message initialisation failed\n");
mnlu_gen_socket_close(&sock_nlg);
return -1;
}
nest = mnl_attr_nest_start(nlh, TIPC_NLA_SOCK);
mnl_attr_put_u32(nlh, TIPC_NLA_SOCK_REF, sock);
mnl_attr_nest_end(nlh, nest);
err = mnlu_gen_socket_sndrcv(&sock_nlg, nlh, publ_list_cb, NULL);
mnlu_gen_socket_close(&sock_nlg);
return err;
}
static int sock_list_cb(const struct nlmsghdr *nlh, void *data)
{
struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh);
struct nlattr *info[TIPC_NLA_MAX + 1] = {};
struct nlattr *attrs[TIPC_NLA_SOCK_MAX + 1] = {};
mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info);
if (!info[TIPC_NLA_SOCK])
return MNL_CB_ERROR;
mnl_attr_parse_nested(info[TIPC_NLA_SOCK], parse_attrs, attrs);
if (!attrs[TIPC_NLA_SOCK_REF])
return MNL_CB_ERROR;
printf("socket %u\n", mnl_attr_get_u32(attrs[TIPC_NLA_SOCK_REF]));
if (attrs[TIPC_NLA_SOCK_CON]) {
uint32_t node;
struct nlattr *con[TIPC_NLA_CON_MAX + 1] = {};
mnl_attr_parse_nested(attrs[TIPC_NLA_SOCK_CON], parse_attrs, con);
node = mnl_attr_get_u32(con[TIPC_NLA_CON_NODE]);
printf(" connected to %x:%u", node,
mnl_attr_get_u32(con[TIPC_NLA_CON_SOCK]));
if (con[TIPC_NLA_CON_FLAG])
printf(" via {%u,%u}\n",
mnl_attr_get_u32(con[TIPC_NLA_CON_TYPE]),
mnl_attr_get_u32(con[TIPC_NLA_CON_INST]));
else
printf("\n");
} else if (attrs[TIPC_NLA_SOCK_HAS_PUBL]) {
publ_list(mnl_attr_get_u32(attrs[TIPC_NLA_SOCK_REF]));
}
return MNL_CB_OK;
}
static int cmd_socket_list(struct nlmsghdr *nlh, const struct cmd *cmd,
struct cmdl *cmdl, void *data)
{
if (help_flag) {
fprintf(stderr, "Usage: %s socket list\n", cmdl->argv[0]);
return -EINVAL;
}
nlh = msg_init(TIPC_NL_SOCK_GET);
if (!nlh) {
fprintf(stderr, "error, message initialisation failed\n");
return -1;
}
return msg_dumpit(nlh, sock_list_cb, NULL);
}
void cmd_socket_help(struct cmdl *cmdl)
{
fprintf(stderr,
"Usage: %s socket COMMAND\n\n"
"Commands:\n"
" list - List sockets (ports)\n",
cmdl->argv[0]);
}
int cmd_socket(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl,
void *data)
{
const struct cmd cmds[] = {
{ "list", cmd_socket_list, NULL },
{ NULL }
};
return run_cmd(nlh, cmd, cmds, cmdl, NULL);
}
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