static int
_load_ipv6(netsnmp_container* container, u_long *index )
{
FILE *in;
char line[256];
netsnmp_route_entry *entry = NULL;
static int log_open_err = 1;
DEBUGMSGTL(("access:route:container",
"route_container_arch_load ipv6\n"));
netsnmp_assert(NULL != container);
/*
* fetch routes from the proc file-system:
*/
if (!(in = fopen("/proc/net/ipv6_route", "r"))) {
if (1 == log_open_err) {
NETSNMP_LOGONCE((LOG_ERR, "cannot open /proc/net/ipv6_route\n"));
log_open_err = 0;
}
return -2;
}
/*
* if we turned off logging of open errors, turn it back on now that
* we have been able to open the file.
*/
if (0 == log_open_err)
log_open_err = 1;
fgets(line,sizeof(line),in); /* skip header */
while (fgets(line, sizeof(line), in)) {
char c_name[IFNAMSIZ+1];
char c_dest[33], c_src[33], c_next[33];
int rc;
unsigned int dest_pfx, flags;
size_t buf_len, buf_offset;
u_char *temp_uchar_ptr;
entry = netsnmp_access_route_entry_create();
/*
* based on /usr/src/linux/net/ipv6/route.c, kernel 2.6.7:
*
* [ Dest addr / plen ]
* fe80000000000000025056fffec00008 80 \
*
* [ (?subtree) : src addr/plen : 0/0]
* 00000000000000000000000000000000 00 \
*
* [ next hop ][ metric ][ref ctn][ use ]
* 00000000000000000000000000000000 00000000 00000000 00000000 \
*
* [ flags ][dev name]
* 80200001 lo
*/
rc = sscanf(line, "%32s %2x %32s %*x %32s %x %*x %*x %x %"
SNMP_MACRO_VAL_TO_STR(IFNAMSIZ) "s\n",
c_dest, &dest_pfx, c_src, /*src_pfx,*/ c_next,
&entry->rt_metric1, /** ref,*/ /* use, */ &flags, c_name);
DEBUGMSGTL(("9:access:route:container", "line |%s|\n", line));
if (7 != rc) {
snmp_log(LOG_ERR,
"/proc/net/ipv6_route data format error (%d!=8), "
"line ==|%s|", rc, line);
continue;
}
/*
* temporary null terminated name
*/
c_name[ sizeof(c_name)-1 ] = 0;
entry->if_index = se_find_value_in_slist("interfaces", c_name);
if(SE_DNE == entry->if_index) {
snmp_log(LOG_ERR,"unknown interface in /proc/net/ipv6_route "
"('%s')\n", c_name);
netsnmp_access_route_entry_free(entry);
continue;
}
/*
* arbitrary index
*/
entry->ns_rt_index = ++(*index);
#ifdef USING_IP_FORWARD_MIB_IPCIDRROUTETABLE_IPCIDRROUTETABLE_MODULE
/** entry->rt_mask = mask; */ /* IPv4 only */
/** entry->rt_tos = XXX; */
/** rt info ?? */
#endif
/*
* convert hex addresses to binary
*/
entry->rt_dest_type = INETADDRESSTYPE_IPV6;
entry->rt_dest_len = 16;
buf_len = sizeof(entry->rt_dest);
buf_offset = 0;
temp_uchar_ptr = entry->rt_dest;
netsnmp_hex_to_binary(&temp_uchar_ptr, &buf_len, &buf_offset, 0,
c_dest, NULL);
entry->rt_nexthop_type = INETADDRESSTYPE_IPV6;
entry->rt_nexthop_len = 16;
buf_len = sizeof(entry->rt_nexthop);
buf_offset = 0;
temp_uchar_ptr = entry->rt_nexthop;
netsnmp_hex_to_binary(&temp_uchar_ptr, &buf_len, &buf_offset, 0,
c_next, NULL);
entry->rt_pfx_len = dest_pfx;
#ifdef USING_IP_FORWARD_MIB_INETCIDRROUTETABLE_INETCIDRROUTETABLE_MODULE
/*
inetCidrRoutePolicy OBJECT-TYPE
SYNTAX OBJECT IDENTIFIER
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This object is an opaque object without any defined
semantics. Its purpose is to serve as an additional
index which may delineate between multiple entries to
the same destination. The value { 0 0 } shall be used
as the default value for this object."
*/
/*
* on linux, default routes all look alike, and would have the same
* indexed based on dest and next hop. So we use our arbitrary index
* as the policy, to distinguish between them.
*/
entry->rt_policy = calloc(3, sizeof(oid));
entry->rt_policy[2] = entry->ns_rt_index;
entry->rt_policy_len = sizeof(oid)*3;
#endif
/*
* get protocol and type from flags
*/
entry->rt_type = _type_from_flags(flags);
entry->rt_proto = (flags & RTF_DYNAMIC)
? IANAIPROUTEPROTOCOL_ICMP : IANAIPROUTEPROTOCOL_LOCAL;
/*
* insert into container
*/
CONTAINER_INSERT(container, entry);
}
fclose(in);
return 0;
}
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;
}
