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Merge pull request #1454 from rubenk/libi2c-dev-mark-as-linux-only
[collectd.git]
/
src
/
snmp.c
diff --git
a/src/snmp.c
b/src/snmp.c
index
5ad8b60
..
3ccf60c
100644
(file)
--- a/
src/snmp.c
+++ b/
src/snmp.c
@@
-655,7
+655,10
@@
static int csnmp_config_add_host (oconfig_item_t *ci)
status = cf_util_get_string(ci, &hd->name);
if (status != 0)
status = cf_util_get_string(ci, &hd->name);
if (status != 0)
+ {
+ sfree (hd);
return status;
return status;
+ }
hd->sess_handle = NULL;
hd->interval = 0;
hd->sess_handle = NULL;
hd->interval = 0;
@@
-924,8
+927,7
@@
static value_t csnmp_value_list_to_value (struct variable_list *vl, int type,
tmp_unsigned = (uint32_t) *vl->val.integer;
tmp_signed = (int32_t) *vl->val.integer;
tmp_unsigned = (uint32_t) *vl->val.integer;
tmp_signed = (int32_t) *vl->val.integer;
- if ((vl->type == ASN_INTEGER)
- || (vl->type == ASN_GAUGE))
+ if (vl->type == ASN_INTEGER)
prefer_signed = 1;
DEBUG ("snmp plugin: Parsed int32 value is %"PRIu64".", tmp_unsigned);
prefer_signed = 1;
DEBUG ("snmp plugin: Parsed int32 value is %"PRIu64".", tmp_unsigned);
@@
-1049,6
+1051,10
@@
static value_t csnmp_value_list_to_value (struct variable_list *vl, int type,
return (ret);
} /* value_t csnmp_value_list_to_value */
return (ret);
} /* value_t csnmp_value_list_to_value */
+/* csnmp_strvbcopy_hexstring converts the bit string contained in "vb" to a hex
+ * representation and writes it to dst. Returns zero on success and ENOMEM if
+ * dst is not large enough to hold the string. dst is guaranteed to be
+ * nul-terminated. */
static int csnmp_strvbcopy_hexstring (char *dst, /* {{{ */
const struct variable_list *vb, size_t dst_size)
{
static int csnmp_strvbcopy_hexstring (char *dst, /* {{{ */
const struct variable_list *vb, size_t dst_size)
{
@@
-1056,6
+1062,8
@@
static int csnmp_strvbcopy_hexstring (char *dst, /* {{{ */
size_t buffer_free;
size_t i;
size_t buffer_free;
size_t i;
+ dst[0] = 0;
+
buffer_ptr = dst;
buffer_free = dst_size;
buffer_ptr = dst;
buffer_free = dst_size;
@@
-1065,23
+1073,28
@@
static int csnmp_strvbcopy_hexstring (char *dst, /* {{{ */
status = snprintf (buffer_ptr, buffer_free,
(i == 0) ? "%02x" : ":%02x", (unsigned int) vb->val.bitstring[i]);
status = snprintf (buffer_ptr, buffer_free,
(i == 0) ? "%02x" : ":%02x", (unsigned int) vb->val.bitstring[i]);
+ assert (status >= 0);
- if (
status >= buffer_free)
+ if (
((size_t) status) >= buffer_free) /* truncated */
{
{
- buffer_ptr += (buffer_free - 1);
- *buffer_ptr = 0;
- return (dst_size + (buffer_free - status));
+ dst[dst_size - 1] = 0;
+ return ENOMEM;
}
else /* if (status < buffer_free) */
{
}
else /* if (status < buffer_free) */
{
- buffer_ptr
+=
status;
- buffer_free -= status;
+ buffer_ptr
+= (size_t)
status;
+ buffer_free -=
(size_t)
status;
}
}
}
}
- return
((int) (dst_size - buffer_free))
;
+ return
0
;
} /* }}} int csnmp_strvbcopy_hexstring */
} /* }}} int csnmp_strvbcopy_hexstring */
+/* csnmp_strvbcopy copies the octet string or bit string contained in vb to
+ * dst. If non-printable characters are detected, it will switch to a hex
+ * representation of the string. Returns zero on success, EINVAL if vb does not
+ * contain a string and ENOMEM if dst is not large enough to contain the
+ * string. */
static int csnmp_strvbcopy (char *dst, /* {{{ */
const struct variable_list *vb, size_t dst_size)
{
static int csnmp_strvbcopy (char *dst, /* {{{ */
const struct variable_list *vb, size_t dst_size)
{
@@
-1093,6
+1106,14
@@
static int csnmp_strvbcopy (char *dst, /* {{{ */
src = (char *) vb->val.string;
else if (vb->type == ASN_BIT_STR)
src = (char *) vb->val.bitstring;
src = (char *) vb->val.string;
else if (vb->type == ASN_BIT_STR)
src = (char *) vb->val.bitstring;
+ else if (vb->type == ASN_IPADDRESS)
+ {
+ return ssnprintf (dst, dst_size, "%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8"",
+ (uint8_t) vb->val.string[0],
+ (uint8_t) vb->val.string[1],
+ (uint8_t) vb->val.string[2],
+ (uint8_t) vb->val.string[3]);
+ }
else
{
dst[0] = 0;
else
{
dst[0] = 0;
@@
-1111,8
+1132,12
@@
static int csnmp_strvbcopy (char *dst, /* {{{ */
dst[i] = src[i];
}
dst[num_chars] = 0;
dst[i] = src[i];
}
dst[num_chars] = 0;
+ dst[dst_size - 1] = 0;
+
+ if (dst_size <= vb->val_len)
+ return ENOMEM;
- return
((int) vb->val_len)
;
+ return
0
;
} /* }}} int csnmp_strvbcopy */
static int csnmp_instance_list_add (csnmp_list_instances_t **head,
} /* }}} int csnmp_strvbcopy */
static int csnmp_instance_list_add (csnmp_list_instances_t **head,
@@
-1154,7
+1179,7
@@
static int csnmp_instance_list_add (csnmp_list_instances_t **head,
}
/* Get instance name */
}
/* Get instance name */
- if ((vb->type == ASN_OCTET_STR) || (vb->type == ASN_BIT_STR))
+ if ((vb->type == ASN_OCTET_STR) || (vb->type == ASN_BIT_STR)
|| (vb->type == ASN_IPADDRESS)
)
{
char *ptr;
{
char *ptr;
@@
-1373,12
+1398,12
@@
static int csnmp_dispatch_table (host_definition_t *host, data_definition_t *dat
static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
{
struct snmp_pdu *req;
static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
{
struct snmp_pdu *req;
- struct snmp_pdu *res;
+ struct snmp_pdu *res
= NULL
;
struct variable_list *vb;
const data_set_t *ds;
struct variable_list *vb;
const data_set_t *ds;
-
uint32_t oid_list_len = (uint32_t) (data->values_len + 1)
;
+
size_t oid_list_len = data->values_len + 1
;
/* Holds the last OID returned by the device. We use this in the GETNEXT
* request to proceed. */
oid_t oid_list[oid_list_len];
/* Holds the last OID returned by the device. We use this in the GETNEXT
* request to proceed. */
oid_t oid_list[oid_list_len];
@@
-1387,8
+1412,7
@@
static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
_Bool oid_list_todo[oid_list_len];
int status;
_Bool oid_list_todo[oid_list_len];
int status;
- int i;
- uint32_t j;
+ size_t i;
/* `value_list_head' and `value_list_tail' implement a linked list for each
* value. `instance_list_head' and `instance_list_tail' implement a linked list of
/* `value_list_head' and `value_list_tail' implement a linked list for each
* value. `instance_list_head' and `instance_list_tail' implement a linked list of
@@
-1429,8
+1453,8
@@
static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
else /* no InstanceFrom option specified. */
oid_list_len--;
else /* no InstanceFrom option specified. */
oid_list_len--;
- for (
j = 0; j < oid_list_len; j
++)
- oid_list_todo[
j
] = 1;
+ for (
i = 0; i < oid_list_len; i
++)
+ oid_list_todo[
i
] = 1;
/* We're going to construct n linked lists, one for each "value".
* value_list_head will contain pointers to the heads of these linked lists,
/* We're going to construct n linked lists, one for each "value".
* value_list_head will contain pointers to the heads of these linked lists,
@@
-1462,13
+1486,13
@@
static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
}
oid_list_todo_num = 0;
}
oid_list_todo_num = 0;
- for (
j = 0; j < oid_list_len; j
++)
+ for (
i = 0; i < oid_list_len; i
++)
{
/* Do not rerequest already finished OIDs */
{
/* Do not rerequest already finished OIDs */
- if (!oid_list_todo[
j
])
+ if (!oid_list_todo[
i
])
continue;
oid_list_todo_num++;
continue;
oid_list_todo_num++;
- snmp_add_null_var (req, oid_list[
j].oid, oid_list[j
].oid_len);
+ snmp_add_null_var (req, oid_list[
i].oid, oid_list[i
].oid_len);
}
if (oid_list_todo_num == 0)
}
if (oid_list_todo_num == 0)
@@
-1564,7
+1588,7
@@
static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
ret = csnmp_oid_suffix (&suffix, &vb_name, data->values + i);
if (ret != 0)
{
ret = csnmp_oid_suffix (&suffix, &vb_name, data->values + i);
if (ret != 0)
{
- DEBUG ("snmp plugin: host = %s; data = %s; i = %
i
; "
+ DEBUG ("snmp plugin: host = %s; data = %s; i = %
zu
; "
"Value probably left its subtree.",
host->name, data->name, i);
oid_list_todo[i] = 0;
"Value probably left its subtree.",
host->name, data->name, i);
oid_list_todo[i] = 0;
@@
-1576,7
+1600,7
@@
static int csnmp_read_table (host_definition_t *host, data_definition_t *data)
if ((value_list_tail[i] != NULL)
&& (csnmp_oid_compare (&suffix, &value_list_tail[i]->suffix) <= 0))
{
if ((value_list_tail[i] != NULL)
&& (csnmp_oid_compare (&suffix, &value_list_tail[i]->suffix) <= 0))
{
- DEBUG ("snmp plugin: host = %s; data = %s; i = %
i
; "
+ DEBUG ("snmp plugin: host = %s; data = %s; i = %
zu
; "
"Suffix is not increasing.",
host->name, data->name, i);
oid_list_todo[i] = 0;
"Suffix is not increasing.",
host->name, data->name, i);
oid_list_todo[i] = 0;
@@
-1660,14
+1684,14
@@
static int csnmp_read_value (host_definition_t *host, data_definition_t *data)
value_list_t vl = VALUE_LIST_INIT;
int status;
value_list_t vl = VALUE_LIST_INIT;
int status;
-
in
t i;
+
size_
t i;
DEBUG ("snmp plugin: csnmp_read_value (host = %s, data = %s)",
host->name, data->name);
if (host->sess_handle == NULL)
{
DEBUG ("snmp plugin: csnmp_read_value (host = %s, data = %s)",
host->name, data->name);
if (host->sess_handle == NULL)
{
- DEBUG ("snmp plugin: csnmp_read_
tabl
e: host->sess_handle == NULL");
+ DEBUG ("snmp plugin: csnmp_read_
valu
e: host->sess_handle == NULL");
return (-1);
}
return (-1);
}
@@
-1731,6
+1755,7
@@
static int csnmp_read_value (host_definition_t *host, data_definition_t *data)
res = NULL;
sfree (errstr);
res = NULL;
sfree (errstr);
+ sfree (vl.values);
csnmp_host_close_session (host);
return (-1);
csnmp_host_close_session (host);
return (-1);
@@
-1767,8
+1792,6
@@
static int csnmp_read_value (host_definition_t *host, data_definition_t *data)
static int csnmp_read_host (user_data_t *ud)
{
host_definition_t *host;
static int csnmp_read_host (user_data_t *ud)
{
host_definition_t *host;
- cdtime_t time_start;
- cdtime_t time_end;
int status;
int success;
int i;
int status;
int success;
int i;
@@
-1778,8
+1801,6
@@
static int csnmp_read_host (user_data_t *ud)
if (host->interval == 0)
host->interval = plugin_get_interval ();
if (host->interval == 0)
host->interval = plugin_get_interval ();
- time_start = cdtime ();
-
if (host->sess_handle == NULL)
csnmp_host_open_session (host);
if (host->sess_handle == NULL)
csnmp_host_open_session (host);
@@
-1800,16
+1821,6
@@
static int csnmp_read_host (user_data_t *ud)
success++;
}
success++;
}
- time_end = cdtime ();
- if ((time_end - time_start) > host->interval)
- {
- WARNING ("snmp plugin: Host `%s' should be queried every %.3f "
- "seconds, but reading all values takes %.3f seconds.",
- host->name,
- CDTIME_T_TO_DOUBLE (host->interval),
- CDTIME_T_TO_DOUBLE (time_end - time_start));
- }
-
if (success == 0)
return (-1);
if (success == 0)
return (-1);