1 /* 2 * socket.c TIPC socket functionality. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License 6 * as published by the Free Software Foundation; either version 7 * 2 of the License, or (at your option) any later version. 8 * 9 * Authors: Richard Alpe <richard.alpe (at) ericsson.com> 10 */ 11 12 #include <stdio.h> 13 #include <errno.h> 14 15 #include <linux/tipc.h> 16 #include <linux/tipc_netlink.h> 17 #include <linux/genetlink.h> 18 #include <libmnl/libmnl.h> 19 20 #include "cmdl.h" 21 #include "msg.h" 22 #include "socket.h" 23 24 #define PORTID_STR_LEN 45 /* Four u32 and five delimiter chars */ 25 26 static int publ_list_cb(const struct nlmsghdr *nlh, void *data) 27 { 28 struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); 29 struct nlattr *info[TIPC_NLA_MAX + 1] = {}; 30 struct nlattr *attrs[TIPC_NLA_SOCK_MAX + 1] = {}; 31 32 mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); 33 if (!info[TIPC_NLA_PUBL]) 34 return MNL_CB_ERROR; 35 36 mnl_attr_parse_nested(info[TIPC_NLA_PUBL], parse_attrs, attrs); 37 38 printf(" bound to {%u,%u,%u}\n", 39 mnl_attr_get_u32(attrs[TIPC_NLA_PUBL_TYPE]), 40 mnl_attr_get_u32(attrs[TIPC_NLA_PUBL_LOWER]), 41 mnl_attr_get_u32(attrs[TIPC_NLA_PUBL_UPPER])); 42 43 return MNL_CB_OK; 44 } 45 46 static int publ_list(uint32_t sock) 47 { 48 struct nlmsghdr *nlh; 49 char buf[MNL_SOCKET_BUFFER_SIZE]; 50 struct nlattr *nest; 51 52 if (!(nlh = msg_init(buf, TIPC_NL_PUBL_GET))) { 53 fprintf(stderr, "error, message initialisation failed\n"); 54 return -1; 55 } 56 57 nest = mnl_attr_nest_start(nlh, TIPC_NLA_SOCK); 58 mnl_attr_put_u32(nlh, TIPC_NLA_SOCK_REF, sock); 59 mnl_attr_nest_end(nlh, nest); 60 61 return msg_dumpit(nlh, publ_list_cb, NULL); 62 } 63 64 static int sock_list_cb(const struct nlmsghdr *nlh, void *data) 65 { 66 struct genlmsghdr *genl = mnl_nlmsg_get_payload(nlh); 67 struct nlattr *info[TIPC_NLA_MAX + 1] = {}; 68 struct nlattr *attrs[TIPC_NLA_SOCK_MAX + 1] = {}; 69 70 mnl_attr_parse(nlh, sizeof(*genl), parse_attrs, info); 71 if (!info[TIPC_NLA_SOCK]) 72 return MNL_CB_ERROR; 73 74 mnl_attr_parse_nested(info[TIPC_NLA_SOCK], parse_attrs, attrs); 75 if (!attrs[TIPC_NLA_SOCK_REF]) 76 return MNL_CB_ERROR; 77 78 printf("socket %u\n", mnl_attr_get_u32(attrs[TIPC_NLA_SOCK_REF])); 79 80 if (attrs[TIPC_NLA_SOCK_CON]) { 81 uint32_t node; 82 struct nlattr *con[TIPC_NLA_CON_MAX + 1] = {}; 83 84 mnl_attr_parse_nested(attrs[TIPC_NLA_SOCK_CON], parse_attrs, con); 85 node = mnl_attr_get_u32(con[TIPC_NLA_CON_NODE]); 86 87 printf(" connected to <%u.%u.%u:%u>", tipc_zone(node), 88 tipc_cluster(node), tipc_node(node), 89 mnl_attr_get_u32(con[TIPC_NLA_CON_SOCK])); 90 91 if (con[TIPC_NLA_CON_FLAG]) 92 printf(" via {%u,%u}\n", 93 mnl_attr_get_u32(con[TIPC_NLA_CON_TYPE]), 94 mnl_attr_get_u32(con[TIPC_NLA_CON_INST])); 95 else 96 printf("\n"); 97 } else if (attrs[TIPC_NLA_SOCK_HAS_PUBL]) { 98 publ_list(mnl_attr_get_u32(attrs[TIPC_NLA_SOCK_REF])); 99 } 100 101 return MNL_CB_OK; 102 } 103 104 static int cmd_socket_list(struct nlmsghdr *nlh, const struct cmd *cmd, 105 struct cmdl *cmdl, void *data) 106 { 107 char buf[MNL_SOCKET_BUFFER_SIZE]; 108 109 if (help_flag) { 110 fprintf(stderr, "Usage: %s socket list\n", cmdl->argv[0]); 111 return -EINVAL; 112 } 113 114 if (!(nlh = msg_init(buf, TIPC_NL_SOCK_GET))) { 115 fprintf(stderr, "error, message initialisation failed\n"); 116 return -1; 117 } 118 119 return msg_dumpit(nlh, sock_list_cb, NULL); 120 } 121 122 void cmd_socket_help(struct cmdl *cmdl) 123 { 124 fprintf(stderr, 125 "Usage: %s socket COMMAND\n\n" 126 "Commands:\n" 127 " list - List sockets (ports)\n", 128 cmdl->argv[0]); 129 } 130 131 int cmd_socket(struct nlmsghdr *nlh, const struct cmd *cmd, struct cmdl *cmdl, 132 void *data) 133 { 134 const struct cmd cmds[] = { 135 { "list", cmd_socket_list, NULL }, 136 { NULL } 137 }; 138 139 return run_cmd(nlh, cmd, cmds, cmdl, NULL); 140 } 141
