/**
* @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
_load6(netsnmp_container *container, u_int load_flags)
{
int rc = 0;
FILE *in;
char line[180];
static int log_open_err = 1;
netsnmp_assert(NULL != container);
#undef PROCFILE
#define PROCFILE "/proc/net/tcp6"
if (!(in = fopen(PROCFILE, "r"))) {
snmp_log(LOG_ERR,"could not open " PROCFILE "\n");
if (1 == log_open_err) {
snmp_log(LOG_ERR,"could not open " PROCFILE "\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 */
/*
* Note: PPC (big endian)
*
* sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode
* 0: 00000000000000000000000000000001:1466 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000 500 0 326699 1 efb81580 3000 0 0 2 -1
*/
while (fgets(line, sizeof(line), in)) {
netsnmp_tcpconn_entry *entry;
int state, rc, local_port, remote_port, tmp_state;
unsigned long long inode;
size_t buf_len, offset;
char local_addr[48], remote_addr[48];
u_char *tmp_ptr;
if (6 != (rc = sscanf(line, "%*d: %47[0-9A-Z]:%x %47[0-9A-Z]:%x %x %*x:%*x %*x:%*x %*x %*x %*x %llu",
local_addr, &local_port,
remote_addr, &remote_port, &tmp_state, &inode))) {
DEBUGMSGT(("access:tcpconn:container",
"error parsing line (%d != 6)\n", rc));
DEBUGMSGT(("access:tcpconn:container"," line '%s'\n", line));
continue;
}
DEBUGMSGT(("verbose:access:tcpconn:container"," line '%s'\n", line));
/*
* check if we care about listen state
*/
state = (tmp_state & 0xf) < 12 ? linux_states[tmp_state & 0xf] : 2;
if (load_flags) {
if (TCPCONNECTIONSTATE_LISTEN == state) {
if (load_flags & NETSNMP_ACCESS_TCPCONN_LOAD_NOLISTEN) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" skipping listen\n"));
continue;
}
}
else if (load_flags & NETSNMP_ACCESS_TCPCONN_LOAD_ONLYLISTEN) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" skipping non-listen\n"));
continue;
}
}
/*
*/
entry = netsnmp_access_tcpconn_entry_create();
if(NULL == entry) {
rc = -3;
break;
}
/** oddly enough, these appear to already be in network order */
entry->loc_port = (unsigned short) local_port;
entry->rmt_port = (unsigned short) remote_port;
entry->tcpConnState = state;
entry->pid = netsnmp_get_pid_from_inode(inode);
/** the addr string may need work */
buf_len = strlen(local_addr);
if ((32 != buf_len) ||
(-1 == netsnmp_addrstr_hton(local_addr, 32))) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" error processing local address\n"));
netsnmp_access_tcpconn_entry_free(entry);
continue;
}
offset = 0;
tmp_ptr = entry->loc_addr;
rc = netsnmp_hex_to_binary(&tmp_ptr, &buf_len,
&offset, 0, local_addr, NULL);
entry->loc_addr_len = offset;
if (( 16 != entry->loc_addr_len ) && ( 20 != entry->loc_addr_len )) {
DEBUGMSGT(("access:tcpconn:container",
"error parsing local addr (%d != 16|20)\n",
entry->loc_addr_len));
DEBUGMSGT(("access:tcpconn:container"," line '%s'\n", line));
netsnmp_access_tcpconn_entry_free(entry);
continue;
}
buf_len = strlen((char*)remote_addr);
if ((32 != buf_len) ||
(-1 == netsnmp_addrstr_hton(remote_addr, 32))) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" error processing remote address\n"));
netsnmp_access_tcpconn_entry_free(entry);
continue;
}
offset = 0;
tmp_ptr = entry->rmt_addr;
rc = netsnmp_hex_to_binary(&tmp_ptr, &buf_len,
&offset, 0, remote_addr, NULL);
entry->rmt_addr_len = offset;
if (( 16 != entry->rmt_addr_len ) && ( 20 != entry->rmt_addr_len )) {
DEBUGMSGT(("access:tcpconn:container",
"error parsing remote addr (%d != 16|20)\n",
entry->rmt_addr_len));
DEBUGMSGT(("access:tcpconn:container"," line '%s'\n", line));
netsnmp_access_tcpconn_entry_free(entry);
continue;
}
/*
* add entry to container
*/
entry->arbitrary_index = CONTAINER_SIZE(container) + 1;
CONTAINER_INSERT(container, entry);
}
fclose(in);
if(rc<0)
return rc;
return 0;
}
/**
*
* @retval 0 no errors
* @retval !0 errors
*/
static int
_load4(netsnmp_container *container, u_int load_flags)
{
int rc = 0;
FILE *in;
char line[160];
netsnmp_assert(NULL != container);
#define PROCFILE "/proc/net/tcp"
if (!(in = fopen(PROCFILE, "r"))) {
snmp_log(LOG_ERR,"could not open " PROCFILE "\n");
return -2;
}
fgets(line, sizeof(line), in); /* skip header */
/*
* sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode
* 0: 00000000:8000 00000000:0000 0A 00000000:00000000 00:00000000 00000000 29 0 1028 1 df7b1b80 300 0 0 2 -1
*/
while (fgets(line, sizeof(line), in)) {
netsnmp_tcpconn_entry *entry;
unsigned int state, local_port, remote_port, tmp_state;
unsigned long long inode;
size_t buf_len, offset;
char local_addr[10], remote_addr[10];
u_char *tmp_ptr;
if (6 != (rc = sscanf(line, "%*d: %8[0-9A-Z]:%x %8[0-9A-Z]:%x %x %*x:%*x %*x:%*x %*x %*x %*x %llu",
local_addr, &local_port,
remote_addr, &remote_port, &tmp_state, &inode))) {
DEBUGMSGT(("access:tcpconn:container",
"error parsing line (%d != 6)\n", rc));
DEBUGMSGT(("access:tcpconn:container"," line '%s'\n", line));
snmp_log(LOG_ERR, "tcp:_load4: bad line in " PROCFILE ": %s\n", line);
rc = 0;
continue;
}
DEBUGMSGT(("verbose:access:tcpconn:container"," line '%s'\n", line));
/*
* check if we care about listen state
*/
state = (tmp_state & 0xf) < 12 ? linux_states[tmp_state & 0xf] : 2;
if (load_flags) {
if (TCPCONNECTIONSTATE_LISTEN == state) {
if (load_flags & NETSNMP_ACCESS_TCPCONN_LOAD_NOLISTEN) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" skipping listen\n"));
continue;
}
}
else if (load_flags & NETSNMP_ACCESS_TCPCONN_LOAD_ONLYLISTEN) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" skipping non-listen\n"));
continue;
}
}
/*
*/
entry = netsnmp_access_tcpconn_entry_create();
if(NULL == entry) {
rc = -3;
break;
}
/** oddly enough, these appear to already be in network order */
entry->loc_port = (unsigned short) local_port;
entry->rmt_port = (unsigned short) remote_port;
entry->tcpConnState = state;
entry->pid = netsnmp_get_pid_from_inode(inode);
/** the addr string may need work */
buf_len = strlen(local_addr);
if ((8 != buf_len) ||
(-1 == netsnmp_addrstr_hton(local_addr, 8))) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" error processing local address\n"));
netsnmp_access_tcpconn_entry_free(entry);
continue;
}
offset = 0;
tmp_ptr = entry->loc_addr;
rc = netsnmp_hex_to_binary(&tmp_ptr, &buf_len,
&offset, 0, local_addr, NULL);
entry->loc_addr_len = offset;
if ( 4 != entry->loc_addr_len ) {
DEBUGMSGT(("access:tcpconn:container",
"error parsing local addr (%d != 4)\n",
entry->loc_addr_len));
DEBUGMSGT(("access:tcpconn:container"," line '%s'\n", line));
netsnmp_access_tcpconn_entry_free(entry);
continue;
}
/** the addr string may need work */
buf_len = strlen((char*)remote_addr);
if ((8 != buf_len) ||
(-1 == netsnmp_addrstr_hton(remote_addr, 8))) {
DEBUGMSGT(("verbose:access:tcpconn:container",
" error processing remote address\n"));
netsnmp_access_tcpconn_entry_free(entry);
continue;
}
offset = 0;
tmp_ptr = entry->rmt_addr;
rc = netsnmp_hex_to_binary(&tmp_ptr, &buf_len,
&offset, 0, remote_addr, NULL);
entry->rmt_addr_len = offset;
if ( 4 != entry->rmt_addr_len ) {
DEBUGMSGT(("access:tcpconn:container",
"error parsing remote addr (%d != 4)\n",
entry->rmt_addr_len));
DEBUGMSGT(("access:tcpconn:container"," line '%s'\n", line));
netsnmp_access_tcpconn_entry_free(entry);
continue;
}
/*
* add entry to container
*/
entry->arbitrary_index = CONTAINER_SIZE(container) + 1;
CONTAINER_INSERT(container, entry);
}
fclose(in);
if(rc<0)
return rc;
return 0;
}
