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;
}
