/**
* add new entry
*/
static void
_add_connection(netsnmp_tcpconn_entry *entry, netsnmp_container *container)
{
tcpListenerTable_rowreq_ctx *rowreq_ctx;
DEBUGMSGTL(("tcpListenerTable:access", "creating new entry\n"));
/*
* allocate an row context and set the index(es), then add it to
* the container
*/
rowreq_ctx = tcpListenerTable_allocate_rowreq_ctx(entry, NULL);
if ((NULL != rowreq_ctx) &&
(MFD_SUCCESS == tcpListenerTable_indexes_set(rowreq_ctx,
entry->loc_addr_len,
(char*)entry->loc_addr,
entry->loc_addr_len,
entry->loc_port))) {
CONTAINER_INSERT(container, rowreq_ctx);
} else {
if (rowreq_ctx) {
snmp_log(LOG_ERR, "error setting index while loading "
"tcpListenerTable cache.\n");
tcpListenerTable_release_rowreq_ctx(rowreq_ctx);
} else {
snmp_log(LOG_ERR, "memory allocation failed while loading "
"tcpListenerTable cache.\n");
netsnmp_access_tcpconn_entry_free(entry);
}
}
}
static int
_load_tcpconn_table_v4(netsnmp_container *container, int flag)
{
mib2_tcpConnEntry_t tc;
netsnmp_tcpconn_entry *ep;
req_e req = GET_FIRST;
DEBUGMSGT(("access:tcpconn:container", "load v4\n"));
while (getMibstat(MIB_TCP_CONN, &tc, sizeof(tc), req,
&Get_everything, 0)==0) {
req = GET_NEXT;
if ((flag & NETSNMP_ACCESS_TCPCONN_LOAD_ONLYLISTEN &&
tc.tcpConnState != MIB2_TCP_listen) ||
(flag & NETSNMP_ACCESS_TCPCONN_LOAD_NOLISTEN &&
tc.tcpConnState == MIB2_TCP_listen)) {
continue;
}
ep = netsnmp_access_tcpconn_entry_create();
if (ep == NULL)
return (-1);
DEBUGMSGT(("access:tcpconn:container", "add entry\n"));
/*
* local address/port.
*/
ep->loc_addr_len = sizeof(tc.tcpConnLocalAddress);
if (sizeof(ep->loc_addr) < ep->loc_addr_len) {
netsnmp_access_tcpconn_entry_free(ep);
return (-1);
}
(void)memcpy(&ep->loc_addr, &tc.tcpConnLocalAddress, ep->loc_addr_len);
ep->loc_port = tc.tcpConnLocalPort;
/*
* remote address/port. The address length is the same as the
* local address, so no check needed.
*/
ep->rmt_addr_len = sizeof(tc.tcpConnRemAddress);
(void)memcpy(&ep->rmt_addr, &tc.tcpConnRemAddress, ep->rmt_addr_len);
ep->rmt_port = tc.tcpConnRemPort;
/* state/pid */
ep->tcpConnState = tc.tcpConnState;
ep->pid = 0;
ep->arch_data = NULL;
/* index */
ep->arbitrary_index = CONTAINER_SIZE(container) + 1;
CONTAINER_INSERT(container, (void *)ep);
}
return (0);
}
/**
* extra context cleanup
*
*/
void tcpConnectionTable_rowreq_ctx_cleanup (tcpConnectionTable_rowreq_ctx * rowreq_ctx)
{
DEBUGMSGTL (("verbose:tcpConnectionTable:tcpConnectionTable_rowreq_ctx_cleanup", "called\n"));
netsnmp_assert (NULL != rowreq_ctx);
/*
* TODO:211:o: |-> Perform extra tcpConnectionTable rowreq cleanup.
*/
netsnmp_access_tcpconn_entry_free (rowreq_ctx->data);
rowreq_ctx->data = NULL;
} /* tcpConnectionTable_rowreq_ctx_cleanup */
netsnmp_tcpconn_entry *
netsnmp_access_tcpconn_entry_create(void)
{
netsnmp_tcpconn_entry *entry =
SNMP_MALLOC_TYPEDEF(netsnmp_tcpconn_entry);
int rc = 0;
DEBUGMSGTL(("verbose:access:tcpconn:entry", "create\n"));
entry->oid_index.len = 1;
entry->oid_index.oids = &entry->arbitrary_index;
/*
* init arch data
*/
rc = netsnmp_arch_tcpconn_entry_init(entry);
if (SNMP_ERR_NOERROR != rc) {
DEBUGMSGT(("access:tcpconn:create","error %d in arch init\n"));
netsnmp_access_tcpconn_entry_free(entry);
}
return entry;
}
/**
*
* @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
*/
int
netsnmp_arch_tcpconn_container_load(netsnmp_container *container)
{
int rc = 0;
FILE *in;
char line[160];
u_char *buf;
netsnmp_tcpconn_entry *entry;
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;
static int linux_states[12] =
{ 1, 5, 3, 4, 6, 7, 11, 1, 8, 9, 2, 10 };
int state, rc, local_port, remote_port;
/*
*/
entry = netsnmp_access_tcpconn_entry_create();
if(NULL == entry) {
rc = -3;
break;
}
if (5 != (rc = sscanf(line, "%*d: %x:%x %x:%x %x",
&entry->indexes[NETSNMP_TCPCONN_IDX_LOCAL_ADDR],
&local_port,
&entry->indexes[NETSNMP_TCPCONN_IDX_REMOTE_ADDR],
&remote_port, &state))) {
DEBUGMSGT(("access:tcpconn:container",
"error parsing line (%d != 5)\n", rc));
DEBUGMSGT(("access:tcpconn:container"," line '%s'\n", line));
netsnmp_access_tcpconn_entry_free(entry);
continue;
}
DEBUGMSGT(("verbose:access:tcpconn:container"," line '%s'\n", line));
entry->indexes[NETSNMP_TCPCONN_IDX_LOCAL_PORT] =
htons((unsigned short) local_port);
entry->indexes[NETSNMP_TCPCONN_IDX_REMOTE_PORT] =
htons((unsigned short) remote_port);
entry->tcpConnState = (state & 0xf) < 12 ? linux_states[state & 0xf] : 2;
/*
* add entry to container
*/
CONTAINER_INSERT(container, entry);
}
fclose(in);
if(rc<0)
return rc;
return 0;
}
void
_access_tcpconn_entry_release(netsnmp_tcpconn_entry * entry, void *context)
{
netsnmp_access_tcpconn_entry_free(entry);
}
/**
*
* @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];
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");
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: 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, buf_len, offset,
tmp_state;
u_char local_addr[48], remote_addr[48];
u_char *tmp_ptr;
if (5 != (rc = sscanf(line, "%*d: %47[0-9A-Z]:%x %47[0-9A-Z]:%x %x",
local_addr, &local_port,
remote_addr, &remote_port, &tmp_state))) {
DEBUGMSGT(("access:tcpconn:container",
"error parsing line (%d != 5)\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;
}
entry->loc_port = htons((unsigned short) local_port);
entry->rmt_port = htons((unsigned short) remote_port);
entry->tcpConnState = state;
buf_len = strlen(local_addr);
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(remote_addr);
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;
}