static int process_ping(ZBX_FPING_HOST *hosts, int hosts_count, int count, int interval, int size, int timeout,
char *error, int max_error_len)
{
const char *__function_name = "process_ping";
FILE *f;
char *c, *c2, params[64];
char filename[MAX_STRING_LEN], tmp[MAX_STRING_LEN];
int i;
ZBX_FPING_HOST *host;
double sec;
int ret = NOTSUPPORTED;
#ifdef HAVE_IPV6
int family;
char params6[64];
char fping_existence = 0;
#define FPING_EXISTS 0x1
#define FPING6_EXISTS 0x2
#endif /* HAVE_IPV6 */
assert(hosts);
zabbix_log(LOG_LEVEL_DEBUG, "In %s() hosts_count:%d", __function_name, hosts_count);
if (-1 == access(CONFIG_FPING_LOCATION, F_OK | X_OK))
{
#if !defined(HAVE_IPV6)
zbx_snprintf(error, max_error_len, "%s: %s", CONFIG_FPING_LOCATION, zbx_strerror(errno));
return ret;
#endif
}
else
{
#ifdef HAVE_IPV6
fping_existence |= FPING_EXISTS;
#else
if (NULL != CONFIG_SOURCE_IP)
{
if (FAIL == is_ip4(CONFIG_SOURCE_IP)) /* we do not have IPv4 family address in CONFIG_SOURCE_IP */
{
zbx_snprintf(error, max_error_len,
"You should enable IPv6 support to use IPv6 family address for SourceIP '%s'.", CONFIG_SOURCE_IP);
return ret;
}
}
#endif
}
#ifdef HAVE_IPV6
if (-1 == access(CONFIG_FPING6_LOCATION, F_OK | X_OK))
{
if (0 == (fping_existence & FPING_EXISTS))
{
zbx_snprintf(error, max_error_len, "At least one of '%s', '%s' must exist. Both are missing in the system.",
CONFIG_FPING_LOCATION,
CONFIG_FPING6_LOCATION);
return ret;
}
}
else
fping_existence |= FPING6_EXISTS;
#endif /* HAVE_IPV6 */
i = zbx_snprintf(params, sizeof(params), "-q -C%d", count);
if (0 != interval)
i += zbx_snprintf(params + i, sizeof(params) - i, " -p%d", interval);
if (0 != size)
i += zbx_snprintf(params + i, sizeof(params) - i, " -b%d", size);
if (0 != timeout)
i += zbx_snprintf(params + i, sizeof(params) - i, " -t%d", timeout);
#ifdef HAVE_IPV6
strscpy(params6, params);
#endif /* HAVE_IPV6 */
if (NULL != CONFIG_SOURCE_IP)
{
#ifdef HAVE_IPV6
if (0 != (fping_existence & FPING_EXISTS))
{
if (0 == source_ip_checked)
get_source_ip_option(CONFIG_FPING_LOCATION, &source_ip_option, &source_ip_checked);
if (NULL != source_ip_option)
zbx_snprintf(params + i, sizeof(params) - i, " %s%s", source_ip_option, CONFIG_SOURCE_IP);
}
if (0 != (fping_existence & FPING6_EXISTS))
{
if (0 == source_ip6_checked)
get_source_ip_option(CONFIG_FPING6_LOCATION, &source_ip6_option, &source_ip6_checked);
if (NULL != source_ip6_option)
zbx_snprintf(params6 + i, sizeof(params6) - i, " %s%s", source_ip6_option, CONFIG_SOURCE_IP);
}
#else
if (0 == source_ip_checked)
get_source_ip_option(CONFIG_FPING_LOCATION, &source_ip_option, &source_ip_checked);
if (NULL != source_ip_option)
zbx_snprintf(params + i, sizeof(params) - i, " %s%s", source_ip_option, CONFIG_SOURCE_IP);
#endif /* HAVE_IPV6 */
}
zbx_snprintf(filename, sizeof(filename), "%s/%s_%li.pinger", CONFIG_TMPDIR, progname, zbx_get_thread_id());
#ifdef HAVE_IPV6
if (NULL != CONFIG_SOURCE_IP)
{
if (SUCCEED != get_address_family(CONFIG_SOURCE_IP, &family, error, max_error_len))
return ret;
if (family == PF_INET)
{
if (0 == (fping_existence & FPING_EXISTS))
{
zbx_snprintf(error, max_error_len, "File '%s' cannot be found in the system.",
CONFIG_FPING_LOCATION);
return ret;
}
zbx_snprintf(tmp, sizeof(tmp), "%s %s 2>&1 <%s", CONFIG_FPING_LOCATION, params, filename);
}
else
{
if (0 == (fping_existence & FPING6_EXISTS))
{
zbx_snprintf(error, max_error_len, "File '%s' cannot be found in the system.",
CONFIG_FPING6_LOCATION);
return ret;
}
zbx_snprintf(tmp, sizeof(tmp), "%s %s 2>&1 <%s", CONFIG_FPING6_LOCATION, params6, filename);
}
}
else
{
i = 0;
if (0 != (fping_existence & FPING_EXISTS))
i += zbx_snprintf(tmp + i, sizeof(tmp) - i, "%s %s 2>&1 <%s;", CONFIG_FPING_LOCATION, params, filename);
if (0 != (fping_existence & FPING6_EXISTS))
i += zbx_snprintf(tmp + i, sizeof(tmp) - i, "%s %s 2>&1 <%s;", CONFIG_FPING6_LOCATION, params6, filename);
}
#else
zbx_snprintf(tmp, sizeof(tmp), "%s %s 2>&1 <%s", CONFIG_FPING_LOCATION, params, filename);
#endif /* HAVE_IPV6 */
if (NULL == (f = fopen(filename, "w")))
{
zbx_snprintf(error, max_error_len, "%s: %s", filename, zbx_strerror(errno));
return ret;
}
zabbix_log(LOG_LEVEL_DEBUG, "%s", filename);
for (i = 0; i < hosts_count; i++)
{
zabbix_log(LOG_LEVEL_DEBUG, "%s", hosts[i].addr);
fprintf(f, "%s\n", hosts[i].addr);
}
fclose(f);
zabbix_log(LOG_LEVEL_DEBUG, "%s", tmp);
if (NULL == (f = popen(tmp, "r")))
{
zbx_snprintf(error, max_error_len, "%s: %s", tmp, zbx_strerror(errno));
unlink(filename);
return ret;
}
if (NULL == fgets(tmp, sizeof(tmp), f))
{
ret = SUCCEED; /* fping does not output anything for DNS names that fail to resolve */
}
else
{
do
{
zbx_rtrim(tmp, "\n");
zabbix_log(LOG_LEVEL_DEBUG, "read line [%s]", tmp);
host = NULL;
if (NULL != (c = strchr(tmp, ' ')))
{
*c = '\0';
for (i = 0; i < hosts_count; i++)
if (0 == strcmp(tmp, hosts[i].addr))
{
host = &hosts[i];
break;
}
*c = ' ';
}
if (NULL == host)
continue;
if (NULL == (c = strstr(tmp, " : ")))
continue;
/* when NIC bonding is used, there are also lines like */
/* 192.168.1.2 : duplicate for [0], 96 bytes, 0.19 ms */
if (NULL != strstr(tmp, "duplicate for"))
continue;
c += 3;
do
{
if (NULL != (c2 = strchr(c, ' ')))
*c2 = '\0';
if (0 != strcmp(c, "-"))
{
sec = atof(c) / 1000; /* convert ms to seconds */
if (host->rcv == 0 || host->min > sec)
host->min = sec;
if (host->rcv == 0 || host->max < sec)
host->max = sec;
host->avg = (host->avg * host->rcv + sec) / (host->rcv + 1);
host->rcv++;
}
host->cnt++;
if (NULL != c2)
*c2++ = ' ';
}
while (NULL != (c = c2));
ret = SUCCEED;
}
while (NULL != fgets(tmp, sizeof(tmp), f));
}
pclose(f);
unlink(filename);
if (NOTSUPPORTED == ret)
zbx_snprintf(error, max_error_len, "fping failed: \"%s\"", tmp);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
return ret;
}
static int process_ping(ZBX_FPING_HOST *hosts, int hosts_count, int count, int interval, int size, int timeout,
char *error, int max_error_len)
{
const char *__function_name = "process_ping";
FILE *f;
char *c, params[64];
char filename[MAX_STRING_LEN], tmp[MAX_STRING_LEN];
size_t offset;
ZBX_FPING_HOST *host;
double sec;
int i, ret = NOTSUPPORTED, index;
#ifdef HAVE_IPV6
int family;
char params6[64];
char fping_existence = 0;
#define FPING_EXISTS 0x1
#define FPING6_EXISTS 0x2
#endif /* HAVE_IPV6 */
assert(hosts);
zabbix_log(LOG_LEVEL_DEBUG, "In %s() hosts_count:%d", __function_name, hosts_count);
if (-1 == access(CONFIG_FPING_LOCATION, X_OK))
{
#if !defined(HAVE_IPV6)
zbx_snprintf(error, max_error_len, "%s: %s", CONFIG_FPING_LOCATION, zbx_strerror(errno));
return ret;
#endif
}
else
{
#ifdef HAVE_IPV6
fping_existence |= FPING_EXISTS;
#else
if (NULL != CONFIG_SOURCE_IP)
{
if (FAIL == is_ip4(CONFIG_SOURCE_IP)) /* we do not have IPv4 family address in CONFIG_SOURCE_IP */
{
zbx_snprintf(error, max_error_len,
"You should enable IPv6 support to use IPv6 family address for SourceIP '%s'.", CONFIG_SOURCE_IP);
return ret;
}
}
#endif
}
#ifdef HAVE_IPV6
if (-1 == access(CONFIG_FPING6_LOCATION, X_OK))
{
if (0 == (fping_existence & FPING_EXISTS))
{
zbx_snprintf(error, max_error_len, "At least one of '%s', '%s' must exist. Both are missing in the system.",
CONFIG_FPING_LOCATION,
CONFIG_FPING6_LOCATION);
return ret;
}
}
else
fping_existence |= FPING6_EXISTS;
#endif /* HAVE_IPV6 */
offset = zbx_snprintf(params, sizeof(params), "-C%d", count);
if (0 != interval)
offset += zbx_snprintf(params + offset, sizeof(params) - offset, " -p%d", interval);
if (0 != size)
offset += zbx_snprintf(params + offset, sizeof(params) - offset, " -b%d", size);
if (0 != timeout)
offset += zbx_snprintf(params + offset, sizeof(params) - offset, " -t%d", timeout);
#ifdef HAVE_IPV6
strscpy(params6, params);
#endif /* HAVE_IPV6 */
if (NULL != CONFIG_SOURCE_IP)
{
#ifdef HAVE_IPV6
if (0 != (fping_existence & FPING_EXISTS))
{
if (0 == source_ip_checked)
get_source_ip_option(CONFIG_FPING_LOCATION, &source_ip_option, &source_ip_checked);
if (NULL != source_ip_option)
zbx_snprintf(params + offset, sizeof(params) - offset,
" %s%s", source_ip_option, CONFIG_SOURCE_IP);
}
if (0 != (fping_existence & FPING6_EXISTS))
{
if (0 == source_ip6_checked)
get_source_ip_option(CONFIG_FPING6_LOCATION, &source_ip6_option, &source_ip6_checked);
if (NULL != source_ip6_option)
zbx_snprintf(params6 + offset, sizeof(params6) - offset,
" %s%s", source_ip6_option, CONFIG_SOURCE_IP);
}
#else
if (0 == source_ip_checked)
get_source_ip_option(CONFIG_FPING_LOCATION, &source_ip_option, &source_ip_checked);
if (NULL != source_ip_option)
zbx_snprintf(params + offset, sizeof(params) - offset,
" %s%s", source_ip_option, CONFIG_SOURCE_IP);
#endif /* HAVE_IPV6 */
}
zbx_snprintf(filename, sizeof(filename), "%s/%s_%li.pinger", CONFIG_TMPDIR, progname, zbx_get_thread_id());
#ifdef HAVE_IPV6
if (NULL != CONFIG_SOURCE_IP)
{
if (SUCCEED != get_address_family(CONFIG_SOURCE_IP, &family, error, max_error_len))
return ret;
if (family == PF_INET)
{
if (0 == (fping_existence & FPING_EXISTS))
{
zbx_snprintf(error, max_error_len, "File '%s' cannot be found in the system.",
CONFIG_FPING_LOCATION);
return ret;
}
zbx_snprintf(tmp, sizeof(tmp), "%s %s 2>&1 <%s", CONFIG_FPING_LOCATION, params, filename);
}
else
{
if (0 == (fping_existence & FPING6_EXISTS))
{
zbx_snprintf(error, max_error_len, "File '%s' cannot be found in the system.",
CONFIG_FPING6_LOCATION);
return ret;
}
zbx_snprintf(tmp, sizeof(tmp), "%s %s 2>&1 <%s", CONFIG_FPING6_LOCATION, params6, filename);
}
}
else
{
offset = 0;
if (0 != (fping_existence & FPING_EXISTS))
offset += zbx_snprintf(tmp + offset, sizeof(tmp) - offset,
"%s %s 2>&1 <%s;", CONFIG_FPING_LOCATION, params, filename);
if (0 != (fping_existence & FPING6_EXISTS))
zbx_snprintf(tmp + offset, sizeof(tmp) - offset,
"%s %s 2>&1 <%s;", CONFIG_FPING6_LOCATION, params6, filename);
}
#else
zbx_snprintf(tmp, sizeof(tmp), "%s %s 2>&1 <%s", CONFIG_FPING_LOCATION, params, filename);
#endif /* HAVE_IPV6 */
if (NULL == (f = fopen(filename, "w")))
{
zbx_snprintf(error, max_error_len, "%s: %s", filename, zbx_strerror(errno));
return ret;
}
zabbix_log(LOG_LEVEL_DEBUG, "%s", filename);
for (i = 0; i < hosts_count; i++)
{
zabbix_log(LOG_LEVEL_DEBUG, " %s", hosts[i].addr);
fprintf(f, "%s\n", hosts[i].addr);
}
fclose(f);
zabbix_log(LOG_LEVEL_DEBUG, "%s", tmp);
if (NULL == (f = popen(tmp, "r")))
{
zbx_snprintf(error, max_error_len, "%s: %s", tmp, zbx_strerror(errno));
unlink(filename);
return ret;
}
if (NULL == fgets(tmp, sizeof(tmp), f))
{
ret = SUCCEED; /* fping does not output anything for DNS names that fail to resolve */
}
else
{
for (i = 0; i < hosts_count; i++)
{
hosts[i].status = zbx_malloc(NULL, count);
memset(hosts[i].status, 0, count);
}
do
{
zbx_rtrim(tmp, "\n");
zabbix_log(LOG_LEVEL_DEBUG, "read line [%s]", tmp);
host = NULL;
if (NULL != (c = strchr(tmp, ' ')))
{
*c = '\0';
for (i = 0; i < hosts_count; i++)
if (0 == strcmp(tmp, hosts[i].addr))
{
host = &hosts[i];
break;
}
*c = ' ';
}
if (NULL == host)
continue;
if (NULL == (c = strstr(tmp, " : ")))
continue;
/* when NIC bonding is used, there are also lines like */
/* 192.168.1.2 : duplicate for [0], 96 bytes, 0.19 ms */
if (NULL != strstr(tmp, "duplicate for"))
continue;
c += 3;
/* The were two issues with processing only the fping's final status line: */
/* 1) pinging broadcast addresses could have resulted in responses from */
/* different hosts, which were counted as the target host responses; */
/* 2) there is a bug in fping (v3.8 at least) where pinging broadcast */
/* address will result in no individual responses, but the final */
/* status line might contain a bogus value. */
/* Because of the above issues we must monitor the individual responses */
/* and mark the valid ones. */
if ('[' == *c)
{
/* Fping appends response source address in format '[<- 10.3.0.10]' */
/* if it does not match the target address. Ignore such responses. */
if (NULL != strstr(c + 1, "[<-"))
continue;
/* get the index of individual ping response */
index = atoi(c + 1);
if (0 > index || index >= count)
continue;
host->status[index] = 1;
continue;
}
/* process status line for a host */
index = 0;
do
{
if (1 == host->status[index])
{
sec = atof(c) / 1000; /* convert ms to seconds */
if (0 == host->rcv || host->min > sec)
host->min = sec;
if (0 == host->rcv || host->max < sec)
host->max = sec;
host->avg = (host->avg * host->rcv + sec) / (host->rcv + 1);
host->rcv++;
}
}
while (++index < count && NULL != (c = strchr(c + 1, ' ')));
host->cnt = count;
ret = SUCCEED;
}
while (NULL != fgets(tmp, sizeof(tmp), f));
for (i = 0; i < hosts_count; i++)
zbx_free(hosts[i].status);
}
pclose(f);
unlink(filename);
if (NOTSUPPORTED == ret)
zbx_snprintf(error, max_error_len, "fping failed: \"%s\"", tmp);
zabbix_log(LOG_LEVEL_DEBUG, "End of %s()", __function_name);
return ret;
}