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/*
* udpEndpointTable MIB architecture support
*
* $Id$
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-features.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/library/file_utils.h>
#include <net-snmp/library/text_utils.h>
#include <net-snmp/data_access/ipaddress.h>
#include <net-snmp/data_access/udp_endpoint.h>
#include "udp-mib/udpEndpointTable/udpEndpointTable_constants.h"
#include "mibgroup/util_funcs/get_pid_from_inode.h"
#include "udp_endpoint_private.h"
#include <fcntl.h>
netsnmp_feature_require(text_utils)
netsnmp_feature_child_of(udp_endpoint_all, libnetsnmpmibs)
netsnmp_feature_child_of(udp_endpoint_writable, udp_endpoint_all)
static int _load4(netsnmp_container *container, u_int flags);
#if defined (NETSNMP_ENABLE_IPV6)
static int _load6(netsnmp_container *container, u_int flags);
#endif
/*
* initialize arch specific storage
*
* @retval 0: success
* @retval <0: error
*/
#ifndef NETSNMP_FEATURE_REMOVE_UDP_ENDPOINT_WRITABLE
int
netsnmp_arch_udp_endpoint_entry_init(netsnmp_udp_endpoint_entry *entry)
{
/*
* init
*/
return 0;
}
/*
* cleanup arch specific storage
*/
void
netsnmp_arch_udp_endpoint_entry_cleanup(netsnmp_udp_endpoint_entry *entry)
{
/*
* cleanup
*/
}
/*
* copy arch specific storage
*/
int
netsnmp_arch_udp_endpoint_entry_copy(netsnmp_udp_endpoint_entry *lhs,
netsnmp_udp_endpoint_entry *rhs)
{
return 0;
}
/*
* delete an entry
*/
int
netsnmp_arch_udp_endpoint_delete(netsnmp_udp_endpoint_entry *entry)
{
if (NULL == entry)
return -1;
/** xxx-rks:9 udp_endpoint delete not implemented */
return -1;
}
#endif /* NETSNMP_FEATURE_REMOVE_UDP_ENDPOINT_WRITABLE */
/**
*
* @retval 0 no errors
* @retval !0 errors
*/
int
netsnmp_arch_udp_endpoint_container_load(netsnmp_container *container,
u_int load_flags )
{
int rc = 0;
/* Setup the pid_from_inode table, and fill it.*/
netsnmp_get_pid_from_inode_init();
rc = _load4(container, load_flags);
if(rc < 0) {
u_int flags = NETSNMP_ACCESS_UDP_ENDPOINT_FREE_KEEP_CONTAINER;
netsnmp_access_udp_endpoint_container_free(container, flags);
return rc;
}
#if defined (NETSNMP_ENABLE_IPV6)
rc = _load6(container, load_flags);
if(rc < 0) {
u_int flags = NETSNMP_ACCESS_UDP_ENDPOINT_FREE_KEEP_CONTAINER;
netsnmp_access_udp_endpoint_container_free(container, flags);
return rc;
}
#endif
return 0;
}
/**
* @internal
* process token value index line
*/
static int
_process_line_udp_ep(netsnmp_line_info *line_info, void *mem,
struct netsnmp_line_process_info_s* lpi)
{
netsnmp_udp_endpoint_entry *ep = (netsnmp_udp_endpoint_entry *)mem;
char *ptr, *sep;
u_char *u_ptr;
size_t u_ptr_len, offset, len;
unsigned long long inode;
size_t count = 0;
/*
* skip 'sl'
*/
ptr = skip_not_white(line_info->start);
if (NULL == ptr) {
DEBUGMSGTL(("access:udp_endpoint", "no sl '%s'\n",
line_info->start));
return PMLP_RC_MEMORY_UNUSED;
}
ptr = skip_white(ptr);
if (NULL == ptr) {
DEBUGMSGTL(("text:util:tvi", "no space after sl '%s'\n",
line_info->start));
return PMLP_RC_MEMORY_UNUSED;
}
/*
* get local address. ignore error on hex conversion, since that
* function doesn't like the ':' between address and port. check the
* offset to see if it worked. May need to flip string too.
*/
u_ptr = ep->loc_addr;
u_ptr_len = sizeof(ep->loc_addr);
sep = strchr(ptr, ':');
if (NULL == sep) {
DEBUGMSGTL(("text:util:tvi", "no ':' '%s'\n",
line_info->start));
return PMLP_RC_MEMORY_UNUSED;
}
len = (sep - ptr);
if (-1 == netsnmp_addrstr_hton(ptr, len)) {
DEBUGMSGTL(("text:util:tvi", "bad length %d for loc addr '%s'\n",
(int)u_ptr_len, line_info->start));
return PMLP_RC_MEMORY_UNUSED;
}
offset = 0;
netsnmp_hex_to_binary(&u_ptr, &u_ptr_len, &offset, 0, ptr, NULL);
if ((4 != offset) && (16 != offset)) {
DEBUGMSGTL(("text:util:tvi", "bad offset %d for loc addr '%s'\n",
(int)offset, line_info->start));
return PMLP_RC_MEMORY_UNUSED;
}
ep->loc_addr_len = offset;
ptr += (offset * 2);
++ptr; /* skip ':' */
/*
* get local port
*/
ep->loc_port = strtol(ptr, &ptr, 16);
ptr = skip_white(ptr);
/*
* get remote address. ignore error on hex conversion, since that
* function doesn't like the ':' between address and port. check the
* offset to see if it worked. May need to flip string too.
*/
u_ptr = ep->rmt_addr;
u_ptr_len = sizeof(ep->rmt_addr);
sep = strchr(ptr, ':');
if (NULL == sep) {
DEBUGMSGTL(("text:util:tvi", "no ':' '%s'\n",
line_info->start));
return PMLP_RC_MEMORY_UNUSED;
}
len = (sep - ptr);
if (-1 == netsnmp_addrstr_hton(ptr, len)) {
DEBUGMSGTL(("text:util:tvi", "bad length %d for rmt addr '%s'\n",
(int)u_ptr_len, line_info->start));
return PMLP_RC_MEMORY_UNUSED;
}
offset = 0;
netsnmp_hex_to_binary(&u_ptr, &u_ptr_len, &offset, 0, ptr, NULL);
if ((4 != offset) && (16 != offset)) {
DEBUGMSGTL(("text:util:tvi", "bad offset %d for rmt addr '%s'\n",
(int)offset, line_info->start));
return PMLP_RC_MEMORY_UNUSED;
}
ep->rmt_addr_len = offset;
ptr += (offset * 2);
++ptr; /* skip ':' */
/*
* get remote port
*/
ep->rmt_port = strtol(ptr, &ptr, 16);
ptr = skip_white(ptr);
/*
* get state too
*/
ep->state = strtol(ptr, &ptr, 16);
/*
* Use inode as instance value.
*/
while (count != 5) {
ptr = skip_white(ptr);
ptr = skip_not_white(ptr);
count++;
}
inode = strtoull(ptr, &ptr, 0);
ep->instance = (u_int)inode;
/*
* get the pid also
*/
ep->pid = netsnmp_get_pid_from_inode(inode);
ep->index = (uintptr_t)(lpi->user_context);
lpi->user_context = (void*)((char*)(lpi->user_context) + 1);
ep->oid_index.oids = &ep->index;
ep->oid_index.len = 1;
return PMLP_RC_MEMORY_USED;
}
/**
*
* @retval 0 no errors
* @retval !0 errors
*/
static int
_load4(netsnmp_container *container, u_int load_flags)
{
netsnmp_file *fp;
netsnmp_line_process_info lpi;
if (NULL == container)
return -1;
/*
* allocate file resources
*/
fp = netsnmp_file_fill(NULL, "/proc/net/udp" , O_RDONLY, 0, 0);
if (NULL == fp) /** msg already logged */
return -2;
memset(&lpi, 0x0, sizeof(lpi));
lpi.mem_size = sizeof(netsnmp_udp_endpoint_entry);
lpi.process = _process_line_udp_ep;
lpi.user_context = (void*)0;
container = netsnmp_file_text_parse(fp, container, PM_USER_FUNCTION,
0, &lpi);
netsnmp_file_release(fp);
return (NULL == container);
}
#if defined (NETSNMP_ENABLE_IPV6)
/**
*
* @retval 0 no errors
* @retval !0 errors
*/
static int
_load6(netsnmp_container *container, u_int load_flags)
{
netsnmp_file *fp;
netsnmp_line_process_info lpi;
if (NULL == container)
return -1;
/*
* allocate file resources
*/
fp = netsnmp_file_fill(NULL, "/proc/net/udp6" , O_RDONLY, 0, 0);
if (NULL == fp) /** msg already logged */
return -2;
memset(&lpi, 0x0, sizeof(lpi));
lpi.mem_size = sizeof(netsnmp_udp_endpoint_entry);
lpi.process = _process_line_udp_ep;
lpi.user_context = (void*)CONTAINER_SIZE(container);
container = netsnmp_file_text_parse(fp, container, PM_USER_FUNCTION,
0, &lpi);
netsnmp_file_release(fp);
return (NULL == container);
}
#endif /* NETSNMP_ENABLE_IPV6 */
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