int _load_v6(netsnmp_container *container, int idx_offset) { FILE *in; char line[80], addr[33], if_name[IFNAMSIZ]; u_char *buf; int if_index, pfx_len, scope, flags, rc = 0; size_t in_len, out_len; netsnmp_ipaddress_entry *entry; _ioctl_extras *extras; static int log_open_err = 1; netsnmp_assert(NULL != container); #define PROCFILE "/proc/net/if_inet6" if (!(in = fopen(PROCFILE, "r"))) { if (1 == log_open_err) { snmp_log(LOG_ERR,"could not open " PROCFILE "\n"); log_open_err = 0; } return -2; } /* * if we hadn't been able to open file and turned of err logging, * turn it back on now that we opened the file. */ if (0 == log_open_err) log_open_err = 1; /* * address index prefix_len scope status if_name */ while (fgets(line, sizeof(line), in)) { /* * fe800000000000000200e8fffe5b5c93 05 40 20 80 eth0 * A D P S F I * A: address * D: device number * P: prefix len * S: scope (see include/net/ipv6.h, net/ipv6/addrconf.c) * F: flags (see include/linux/rtnetlink.h, net/ipv6/addrconf.c) * I: interface */ rc = sscanf(line, "%32s %02x %02x %02x %02x %8s\n", addr, &if_index, &pfx_len, &scope, &flags, if_name); if( 6 != rc ) { snmp_log(LOG_ERR, PROCFILE " data format error (%d!=6), line ==|%s|\n", rc, line); continue; } DEBUGMSGTL(("access:ipaddress:container", "addr %s, index %d, pfx %d, scope %d, flags 0x%X, name %s\n", addr, if_index, pfx_len, scope, flags, if_name)); /* */ entry = netsnmp_access_ipaddress_entry_create(); if(NULL == entry) { rc = -3; break; } in_len = entry->ia_address_len = sizeof(entry->ia_address); netsnmp_assert(16 == in_len); out_len = 0; buf = entry->ia_address; if(1 != snmp_hex_to_binary(&buf, &in_len, &out_len, 0, addr)) { snmp_log(LOG_ERR,"error parsing '%s', skipping\n", entry->ia_address); netsnmp_access_ipaddress_entry_free(entry); continue; } netsnmp_assert(16 == out_len); entry->ia_address_len = out_len; entry->ns_ia_index = ++idx_offset; /* * save if name */ extras = netsnmp_ioctl_ipaddress_extras_get(entry); memcpy(extras->name, if_name, sizeof(extras->name)); extras->flags = flags; /* * yyy-rks: optimization: create a socket outside the loop and use * netsnmp_access_interface_ioctl_ifindex_get() here, since * netsnmp_access_interface_index_find will open/close a socket * every time it is called. */ entry->if_index = netsnmp_access_interface_index_find(if_name); /* #define IPADDRESSSTATUSTC_PREFERRED 1 #define IPADDRESSSTATUSTC_DEPRECATED 2 #define IPADDRESSSTATUSTC_INVALID 3 #define IPADDRESSSTATUSTC_INACCESSIBLE 4 #define IPADDRESSSTATUSTC_UNKNOWN 5 #define IPADDRESSSTATUSTC_TENTATIVE 6 #define IPADDRESSSTATUSTC_DUPLICATE 7 */ if(flags & IFA_F_PERMANENT) entry->ia_status = IPADDRESSSTATUSTC_PREFERRED; /* ?? */ else if(flags & IFA_F_DEPRECATED) entry->ia_status = IPADDRESSSTATUSTC_DEPRECATED; else if(flags & IFA_F_TENTATIVE) entry->ia_status = IPADDRESSSTATUSTC_TENTATIVE; else { entry->ia_status = IPADDRESSSTATUSTC_UNKNOWN; DEBUGMSGTL(("access:ipaddress:ipv6", "unknown flags 0x%x\n", flags)); } /* * if it's not multi, it must be uni. * (an ipv6 address is never broadcast) */ if (IN6_IS_ADDR_MULTICAST(entry->ia_address)) entry->ia_type = IPADDRESSTYPE_ANYCAST; else entry->ia_type = IPADDRESSTYPE_UNICAST; entry->ia_prefix_len = pfx_len; /* * can we figure out if an address is from DHCP? * use manual until then... * *#define IPADDRESSORIGINTC_OTHER 1 *#define IPADDRESSORIGINTC_MANUAL 2 *#define IPADDRESSORIGINTC_DHCP 4 *#define IPADDRESSORIGINTC_LINKLAYER 5 *#define IPADDRESSORIGINTC_RANDOM 6 * * are 'local' address assigned by link layer?? */ if (IN6_IS_ADDR_LINKLOCAL(entry->ia_address) || IN6_IS_ADDR_SITELOCAL(entry->ia_address)) entry->ia_origin = IPADDRESSORIGINTC_LINKLAYER; else entry->ia_origin = IPADDRESSORIGINTC_MANUAL; /* xxx-rks: what can we do with scope? */ /* * add entry to container */ CONTAINER_INSERT(container, entry); } fclose(in); if(rc<0) return rc; return idx_offset; }
int _load_v6(netsnmp_container *container, int idx_offset) { #ifndef HAVE_LINUX_RTNETLINK_H DEBUGMSGTL(("access:ipaddress:container", "cannot get ip address information" "as netlink socket is not available\n")); return -1; #else FILE *in; char line[80], addr[40]; char if_name[IFNAMSIZ+1];/* +1 for '\0' because of the ugly sscanf below */ u_char *buf; int if_index, pfx_len, scope, flags, rc = 0; size_t in_len, out_len; netsnmp_ipaddress_entry *entry; _ioctl_extras *extras; struct address_flag_info addr_info; netsnmp_assert(NULL != container); #define PROCFILE "/proc/net/if_inet6" if (!(in = fopen(PROCFILE, "r"))) { DEBUGMSGTL(("access:ipaddress:container","could not open " PROCFILE "\n")); return -2; } /* * address index prefix_len scope status if_name */ while (fgets(line, sizeof(line), in)) { /* * fe800000000000000200e8fffe5b5c93 05 40 20 80 eth0 * A D P S F I * A: address * D: device number * P: prefix len * S: scope (see include/net/ipv6.h, net/ipv6/addrconf.c) * F: flags (see include/linux/rtnetlink.h, net/ipv6/addrconf.c) * I: interface */ rc = sscanf(line, "%39s %08x %08x %04x %02x %" SNMP_MACRO_VAL_TO_STR(IFNAMSIZ) "s\n", addr, &if_index, &pfx_len, &scope, &flags, if_name); if( 6 != rc ) { snmp_log(LOG_ERR, PROCFILE " data format error (%d!=6), line ==|%s|\n", rc, line); continue; } DEBUGMSGTL(("access:ipaddress:container", "addr %s, index %d, pfx %d, scope %d, flags 0x%X, name %s\n", addr, if_index, pfx_len, scope, flags, if_name)); /* */ entry = netsnmp_access_ipaddress_entry_create(); if(NULL == entry) { rc = -3; break; } in_len = entry->ia_address_len = sizeof(entry->ia_address); netsnmp_assert(16 == in_len); out_len = 0; entry->flags = flags; buf = entry->ia_address; if(1 != netsnmp_hex_to_binary(&buf, &in_len, &out_len, 0, addr, ":")) { snmp_log(LOG_ERR,"error parsing '%s', skipping\n", entry->ia_address); netsnmp_access_ipaddress_entry_free(entry); continue; } netsnmp_assert(16 == out_len); entry->ia_address_len = out_len; entry->ns_ia_index = ++idx_offset; /* * save if name */ extras = netsnmp_ioctl_ipaddress_extras_get(entry); memcpy(extras->name, if_name, sizeof(extras->name)); extras->flags = flags; /* * yyy-rks: optimization: create a socket outside the loop and use * netsnmp_access_interface_ioctl_ifindex_get() here, since * netsnmp_access_interface_index_find will open/close a socket * every time it is called. */ entry->if_index = netsnmp_access_interface_index_find(if_name); memset(&addr_info, 0, sizeof(struct address_flag_info)); addr_info = netsnmp_access_other_info_get(entry->if_index, AF_INET6); /* #define IPADDRESSSTATUSTC_PREFERRED 1 #define IPADDRESSSTATUSTC_DEPRECATED 2 #define IPADDRESSSTATUSTC_INVALID 3 #define IPADDRESSSTATUSTC_INACCESSIBLE 4 #define IPADDRESSSTATUSTC_UNKNOWN 5 #define IPADDRESSSTATUSTC_TENTATIVE 6 #define IPADDRESSSTATUSTC_DUPLICATE 7 */ if((flags & IFA_F_PERMANENT) || (!flags)) entry->ia_status = IPADDRESSSTATUSTC_PREFERRED; /* ?? */ #ifdef IFA_F_TEMPORARY else if(flags & IFA_F_TEMPORARY) entry->ia_status = IPADDRESSSTATUSTC_PREFERRED; /* ?? */ #endif else if(flags & IFA_F_DEPRECATED) entry->ia_status = IPADDRESSSTATUSTC_DEPRECATED; else if(flags & IFA_F_TENTATIVE) entry->ia_status = IPADDRESSSTATUSTC_TENTATIVE; else { entry->ia_status = IPADDRESSSTATUSTC_UNKNOWN; DEBUGMSGTL(("access:ipaddress:ipv6", "unknown flags 0x%x\n", flags)); } /* * if it's not multi, it must be uni. * (an ipv6 address is never broadcast) */ if(addr_info.anycastflg) entry->ia_type = IPADDRESSTYPE_ANYCAST; else entry->ia_type = IPADDRESSTYPE_UNICAST; entry->ia_prefix_len = pfx_len; /* * can we figure out if an address is from DHCP? * use manual until then... * *#define IPADDRESSORIGINTC_OTHER 1 *#define IPADDRESSORIGINTC_MANUAL 2 *#define IPADDRESSORIGINTC_DHCP 4 *#define IPADDRESSORIGINTC_LINKLAYER 5 *#define IPADDRESSORIGINTC_RANDOM 6 * * are 'local' address assigned by link layer?? */ if (!flags) entry->ia_origin = IPADDRESSORIGINTC_LINKLAYER; #ifdef IFA_F_TEMPORARY else if (flags & IFA_F_TEMPORARY) entry->ia_origin = IPADDRESSORIGINTC_RANDOM; #endif else if (IN6_IS_ADDR_LINKLOCAL(entry->ia_address)) entry->ia_origin = IPADDRESSORIGINTC_LINKLAYER; else entry->ia_origin = IPADDRESSORIGINTC_MANUAL; if(entry->ia_origin == IPADDRESSORIGINTC_LINKLAYER) entry->ia_storagetype = STORAGETYPE_PERMANENT; /* xxx-rks: what can we do with scope? */ #ifdef HAVE_LINUX_RTNETLINK_H if(netsnmp_access_ipaddress_extra_prefix_info(entry->if_index, &entry->ia_prefered_lifetime ,&entry->ia_valid_lifetime, addr) < 0){ DEBUGMSGTL(("access:ipaddress:container", "unable to fetch extra prefix info\n")); } #else entry->ia_prefered_lifetime = 0; entry->ia_valid_lifetime = 0; #endif #ifdef SUPPORT_PREFIX_FLAGS { prefix_cbx prefix_val; memset(&prefix_val, 0, sizeof(prefix_cbx)); if(net_snmp_find_prefix_info(&prefix_head_list, addr, &prefix_val) < 0) { DEBUGMSGTL(("access:ipaddress:container", "unable to find info\n")); entry->ia_onlink_flag = 1; /*Set by default as true*/ entry->ia_autonomous_flag = 2; /*Set by default as false*/ } else { entry->ia_onlink_flag = prefix_val.ipAddressPrefixOnLinkFlag; entry->ia_autonomous_flag = prefix_val.ipAddressPrefixAutonomousFlag; } } #else entry->ia_onlink_flag = 1; /*Set by default as true*/ entry->ia_autonomous_flag = 2; /*Set by default as false*/ #endif /* * add entry to container */ if (CONTAINER_INSERT(container, entry) < 0) { DEBUGMSGTL(("access:ipaddress:container","error with ipaddress_entry: insert into container failed.\n")); netsnmp_access_ipaddress_entry_free(entry); continue; } } fclose(in); if(rc<0) return rc; return idx_offset; }