422cadfd5f
Within the components, snprintf() was unchecked and had inefficient calls in some places. We implement esnprintf() that does all the dirty laundry for us and use it exclusively now.
127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <stdio.h>
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#include <limits.h>
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#include "../util.h"
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#if defined(__linux__)
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#include <stdint.h>
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const char *
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netspeed_rx(const char *interface)
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{
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uint64_t oldrxbytes;
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static uint64_t rxbytes = 0;
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extern const unsigned int interval;
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char path[PATH_MAX];
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oldrxbytes = rxbytes;
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if (esnprintf(path, sizeof(path),
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"/sys/class/net/%s/statistics/rx_bytes",
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interface) < 0) {
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return NULL;
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}
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if (pscanf(path, "%llu", &rxbytes) != 1) {
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return NULL;
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}
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return oldrxbytes ? fmt_scaled((rxbytes - oldrxbytes) /
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interval * 1000) : NULL;
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}
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const char *
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netspeed_tx(const char *interface)
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{
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uint64_t oldtxbytes;
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static uint64_t txbytes = 0;
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extern const unsigned int interval;
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char path[PATH_MAX];
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oldtxbytes = txbytes;
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if (esnprintf(path, sizeof(path),
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"/sys/class/net/%s/statistics/tx_bytes",
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interface) < 0) {
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return NULL;
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}
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if (pscanf(path, "%llu", &txbytes) != 1) {
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return NULL;
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}
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return oldtxbytes ? fmt_scaled((txbytes - oldtxbytes) /
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interval * 1000) : NULL;
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}
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#elif defined(__OpenBSD__)
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#include <string.h>
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#include <ifaddrs.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if.h>
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const char *
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netspeed_rx(const char *interface)
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{
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struct ifaddrs *ifal, *ifa;
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struct if_data *ifd;
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uint64_t oldrxbytes;
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static uint64_t rxbytes = 0;
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extern const unsigned int interval;
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int if_ok = 0;
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oldrxbytes = rxbytes;
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if (getifaddrs(&ifal) == -1) {
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warn("getifaddrs failed");
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return NULL;
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}
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rxbytes = 0;
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for (ifa = ifal; ifa; ifa = ifa->ifa_next) {
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if (!strcmp(ifa->ifa_name, interface) &&
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(ifd = (struct if_data *)ifa->ifa_data)) {
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rxbytes += ifd->ifi_ibytes, if_ok = 1;
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}
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}
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freeifaddrs(ifal);
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if (!if_ok) {
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warn("reading 'if_data' failed");
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return NULL;
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}
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return oldrxbytes ? fmt_scaled((rxbytes - oldrxbytes) /
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interval * 1000) : NULL;
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}
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const char *
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netspeed_tx(const char *interface)
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{
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struct ifaddrs *ifal, *ifa;
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struct if_data *ifd;
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uint64_t oldtxbytes;
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static uint64_t txbytes = 0;
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extern const unsigned int interval;
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int if_ok = 0;
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oldtxbytes = txbytes;
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if (getifaddrs(&ifal) == -1) {
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warn("getifaddrs failed");
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return NULL;
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}
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txbytes = 0;
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for (ifa = ifal; ifa; ifa = ifa->ifa_next) {
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if (!strcmp(ifa->ifa_name, interface) &&
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(ifd = (struct if_data *)ifa->ifa_data)) {
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txbytes += ifd->ifi_obytes, if_ok = 1;
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}
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}
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freeifaddrs(ifal);
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if (!if_ok) {
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warn("reading 'if_data' failed");
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return NULL;
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}
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return oldtxbytes ? fmt_scaled((txbytes - oldtxbytes) /
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interval * 1000) : NULL;
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}
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#endif
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