/* Copyright (C) 1998-99 Martin Baulig This file is part of LibGTop 1.0. Contributed by Martin Baulig , October 1998. LibGTop is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. LibGTop is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with LibGTop; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include #include #include #include #include "glibtop_private.h" #include #include #include #include #include #if !defined (__GLIBC__) || __GNU_LIBRARY__ > 1 /* GNU LibC */ #include #include #include #include #include #include #include #elif defined (__GLIBC__) /* Libc 5 */ #include #include #include #include #include #include #endif #ifdef HAVE_IFADDRS_H /* needed for IPV6 support */ #include #ifndef IN6_IS_ADDR_GLOBAL #define IN6_IS_ADDR_GLOBAL(a) \ (((((__const uint8_t *) (a))[0] & 0xff) == 0x3f \ || (((__const uint8_t *) (a))[0] & 0xff) == 0x20)) #endif #endif /* HAVE_IFADDRS_H */ #define _GLIBTOP_IP_FW_ACCTIN 0x1000 /* Account incoming packets only. */ #define _GLIBTOP_IP_FW_ACCTOUT 0x2000 /* Account outgoing packets only. */ static const unsigned long _glibtop_sysdeps_netload = (1L << GLIBTOP_NETLOAD_ERRORS_IN) + (1L << GLIBTOP_NETLOAD_ERRORS_OUT) + (1L << GLIBTOP_NETLOAD_COLLISIONS); static const unsigned long _glibtop_sysdeps_netload_data = (1L << GLIBTOP_NETLOAD_ADDRESS) + (1L << GLIBTOP_NETLOAD_SUBNET) + (1L << GLIBTOP_NETLOAD_MTU); static const unsigned long _glibtop_sysdeps_netload_bytes = (1L << GLIBTOP_NETLOAD_BYTES_IN) + (1L << GLIBTOP_NETLOAD_BYTES_OUT) + (1L << GLIBTOP_NETLOAD_BYTES_TOTAL); static const unsigned long _glibtop_sysdeps_netload_packets = (1L << GLIBTOP_NETLOAD_PACKETS_IN) + (1L << GLIBTOP_NETLOAD_PACKETS_OUT) + (1L << GLIBTOP_NETLOAD_PACKETS_TOTAL); static const unsigned long _glibtop_sysdeps_netload_total = (1L << GLIBTOP_NETLOAD_PACKETS_TOTAL) + (1L << GLIBTOP_NETLOAD_BYTES_TOTAL); static const unsigned long _glibtop_sysdeps_netload_in = (1L << GLIBTOP_NETLOAD_PACKETS_TOTAL) + (1L << GLIBTOP_NETLOAD_BYTES_TOTAL) + (1L << GLIBTOP_NETLOAD_PACKETS_IN) + (1L << GLIBTOP_NETLOAD_BYTES_IN); static const unsigned long _glibtop_sysdeps_netload_out = (1L << GLIBTOP_NETLOAD_PACKETS_TOTAL) + (1L << GLIBTOP_NETLOAD_BYTES_TOTAL) + (1L << GLIBTOP_NETLOAD_PACKETS_OUT) + (1L << GLIBTOP_NETLOAD_BYTES_OUT); static const unsigned long _glibtop_sysdeps_netload_6 = (1L << GLIBTOP_NETLOAD_ADDRESS6) + (1L << GLIBTOP_NETLOAD_PREFIX6) + (1L << GLIBTOP_NETLOAD_SCOPE6); /* Init function. */ void _glibtop_init_netload_s (glibtop *server) { server->sysdeps.netload = _glibtop_sysdeps_netload | _glibtop_sysdeps_netload_data | _glibtop_sysdeps_netload_bytes | _glibtop_sysdeps_netload_packets; } #ifdef HAVE_IFADDRS_H static void get_ipv6(glibtop *server, glibtop_netload *buf, const char *interface) { struct ifaddrs *ifa0, *ifr6; if(getifaddrs (&ifa0) != 0) { glibtop_warn_r(server, "getifaddrs failed : %s", g_strerror(errno)); return; } for (ifr6 = ifa0; ifr6; ifr6 = ifr6->ifa_next) { if (strcmp (ifr6->ifa_name, interface) == 0 && ifr6->ifa_addr != NULL && ifr6->ifa_addr->sa_family == AF_INET6) break; } if(!ifr6) goto free_ipv6; memcpy(buf->address6, &((struct sockaddr_in6 *) ifr6->ifa_addr)->sin6_addr, 16); memcpy(buf->prefix6, &((struct sockaddr_in6 *) ifr6->ifa_netmask)->sin6_addr, 16); if (IN6_IS_ADDR_LINKLOCAL (buf->address6)) buf->scope6 = GLIBTOP_IF_IN6_SCOPE_LINK; else if (IN6_IS_ADDR_SITELOCAL (buf->address6)) buf->scope6 = GLIBTOP_IF_IN6_SCOPE_SITE; else if (IN6_IS_ADDR_GLOBAL (buf->address6) || IN6_IS_ADDR_MC_ORGLOCAL (buf->address6) || IN6_IS_ADDR_V4COMPAT (buf->address6) || IN6_IS_ADDR_MULTICAST (buf->address6) || IN6_IS_ADDR_UNSPECIFIED (buf->address6) ) buf->scope6 = GLIBTOP_IF_IN6_SCOPE_GLOBAL; else if (IN6_IS_ADDR_LOOPBACK (buf->address6)) buf->scope6 = GLIBTOP_IF_IN6_SCOPE_HOST; else buf->scope6 = GLIBTOP_IF_IN6_SCOPE_UNKNOWN; buf->flags |= _glibtop_sysdeps_netload_6; free_ipv6: freeifaddrs(ifa0); } #endif /* HAVE_IFADDRS_H */ static gboolean read_value(glibtop *server, const char *device, const char *filename, guint64 *value) { char buffer[BUFSIZ]; if(try_file_to_buffer(buffer, sizeof buffer, "/sys/class/net/%s/statistics/%s", device, filename)) { glibtop_warn_io_r(server, "Failed to open \"/sys/class/net/%s/statistics/%s\"", device, filename); return FALSE; } *value = strtoull(buffer, NULL, 10); return TRUE; } static void linux_2_6_stats(glibtop *server, glibtop_netload *buf, const char *dev) { if(read_value(server, dev, "rx_packets", &buf->packets_in)) buf->flags |= (1 << GLIBTOP_NETLOAD_PACKETS_IN); if(read_value(server, dev, "tx_packets", &buf->packets_out)) buf->flags |= (1 << GLIBTOP_NETLOAD_PACKETS_OUT); buf->packets_total = buf->packets_in + buf->packets_out; buf->flags |= (1 << GLIBTOP_NETLOAD_PACKETS_TOTAL); if(read_value(server, dev, "rx_bytes", &buf->bytes_in)) buf->flags |= (1 << GLIBTOP_NETLOAD_BYTES_IN); if(read_value(server, dev, "tx_bytes", &buf->bytes_out)) buf->flags |= (1 << GLIBTOP_NETLOAD_BYTES_OUT); buf->bytes_total = buf->bytes_in + buf->bytes_out; buf->flags |= (1 << GLIBTOP_NETLOAD_BYTES_TOTAL); if(read_value(server, dev, "rx_errors", &buf->errors_in)) buf->flags |= (1 << GLIBTOP_NETLOAD_ERRORS_IN); if(read_value(server, dev, "tx_errors", &buf->errors_out)) buf->flags |= (1 << GLIBTOP_NETLOAD_ERRORS_OUT); buf->errors_total = buf->errors_in + buf->errors_out; buf->flags |= (1 << GLIBTOP_NETLOAD_ERRORS_TOTAL); if(read_value(server, dev, "collisions", &buf->collisions)) buf->flags |= (1 << GLIBTOP_NETLOAD_COLLISIONS); } static void linux_2_0_stats(glibtop *server, glibtop_netload *buf, const char *interface) { FILE *f; char buffer[BUFSIZ]; f = fopen ("/proc/net/ip_acct", "r"); if (!f) { glibtop_warn_io_r (server, "Failed to open \"/proc/net/ip_acct\""); return; } /* Skip over the header line. */ fgets (buffer, BUFSIZ-1, f); while (fgets (buffer, BUFSIZ-1, f)) { unsigned long long flags, packets, bytes; char *p, *dev; /* Skip over the network thing. */ dev = skip_token (buffer) + 1; p = skip_token (dev); *p++ = 0; if (strcmp (dev, interface)) continue; p = skip_token (p); flags = strtoull (p, &p, 16); p = skip_multiple_token (p, 2); packets = strtoull (p, &p, 0); bytes = strtoull (p, &p, 0); if (flags & _GLIBTOP_IP_FW_ACCTIN) { /* Incoming packets only. */ buf->packets_total += packets; buf->packets_in += packets; buf->bytes_total += bytes; buf->bytes_in += bytes; buf->flags |= _glibtop_sysdeps_netload_in; } else if (flags & _GLIBTOP_IP_FW_ACCTOUT) { /* Outgoing packets only. */ buf->packets_total += packets; buf->packets_out += packets; buf->bytes_total += bytes; buf->bytes_out += bytes; buf->flags |= _glibtop_sysdeps_netload_out; } else { /* Only have total values. */ buf->packets_total += packets; buf->bytes_total += bytes; buf->flags |= _glibtop_sysdeps_netload_total; } } fclose (f); } static void linux_2_4_stats(glibtop *server, glibtop_netload *buf, const char *interface) { char buffer [BUFSIZ], *p; int have_bytes, fields; FILE *f; /* Ok, either IP accounting is not enabled in the kernel or * it was not enabled for the requested interface. */ f = fopen ("/proc/net/dev", "r"); if (!f) { glibtop_warn_io_r(server, "Failed to open \"/proc/net/dev\""); return; } /* Skip over the header line. */ fgets (buffer, BUFSIZ-1, f); fgets (buffer, BUFSIZ-1, f); /* Starting with 2.1.xx (don't know exactly which version) * /proc/net/dev contains both byte and package counters. */ p = strchr (buffer, '|'); if (!p) { fclose (f); return; } /* Do we already have byte counters ? */ have_bytes = strncmp (++p, "bytes", 5) == 0; /* Count remaining 'Receive' fields so we know where * the first 'Transmit' field starts. */ fields = 0; while (*p != '|') { if (!isspace (*p++)) continue; while (isspace (*p++)) ; fields++; } /* Should never happen. */ if (fields < 2) { fclose (f); return; } fields--; while (fgets (buffer, BUFSIZ-1, f)) { char *p, *dev; dev = buffer; while (isspace (*dev)) dev++; p = strchr (dev, ':'); if (!p) continue; *p++ = 0; /* If it's not a digit, then it's most likely an error * message like 'No statistics available'. */ while (isspace (*p)) p++; if (!isdigit (*p)) continue; if (strcmp (dev, interface)) continue; /* Ok, we've found the interface */ /* Only read byte counts if we really have them. */ if (have_bytes) { buf->bytes_in = strtoull (p, &p, 0); fields--; } buf->packets_in = strtoull (p, &p, 0); buf->errors_in = strtoull (p, &p, 0); p = skip_multiple_token (p, fields); if (have_bytes) buf->bytes_out = strtoull (p, &p, 0); buf->packets_out = strtoull (p, &p, 0); buf->errors_out = strtoull (p, &p, 0); p = skip_multiple_token (p, 2); buf->collisions = strtoull (p, &p, 0); /* Compute total valules. */ buf->bytes_total = buf->bytes_in + buf->bytes_out; buf->packets_total = buf->packets_in + buf->packets_out; /* And now the flags. */ buf->flags |= _glibtop_sysdeps_netload; buf->flags |= _glibtop_sysdeps_netload_packets; if (have_bytes) buf->flags |= _glibtop_sysdeps_netload_bytes; break; /* finished */ } fclose (f); } /* Provides network statistics. */ void glibtop_get_netload_s (glibtop *server, glibtop_netload *buf, const char *interface) { int skfd; memset (buf, 0, sizeof (glibtop_netload)); skfd = socket (AF_INET, SOCK_DGRAM, 0); if (skfd) { struct ifreq ifr; g_strlcpy (ifr.ifr_name, interface, sizeof ifr.ifr_name); if (!ioctl (skfd, SIOCGIFFLAGS, &ifr)) { const unsigned long long flags = ifr.ifr_flags; buf->flags |= (1L << GLIBTOP_NETLOAD_IF_FLAGS); if (flags & IFF_UP) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_UP); if (flags & IFF_BROADCAST) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_BROADCAST); if (flags & IFF_DEBUG) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_DEBUG); if (flags & IFF_LOOPBACK) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_LOOPBACK); if (flags & IFF_POINTOPOINT) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_POINTOPOINT); if (flags & IFF_RUNNING) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_RUNNING); if (flags & IFF_NOARP) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_NOARP); if (flags & IFF_PROMISC) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_PROMISC); if (flags & IFF_ALLMULTI) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_ALLMULTI); if (flags & IFF_MULTICAST) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_MULTICAST); } g_strlcpy (ifr.ifr_name, interface, sizeof ifr.ifr_name); if (!ioctl(skfd, /* SIOCGIWNAME */ 0x8B01, &ifr)) buf->if_flags |= (1L << GLIBTOP_IF_FLAGS_WIRELESS); g_strlcpy (ifr.ifr_name, interface, sizeof ifr.ifr_name); if (!ioctl (skfd, SIOCGIFADDR, &ifr)) { buf->address = ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr; buf->flags |= (1L << GLIBTOP_NETLOAD_ADDRESS); } g_strlcpy (ifr.ifr_name, interface, sizeof ifr.ifr_name); if (!ioctl (skfd, SIOCGIFNETMASK, &ifr)) { buf->subnet = ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr; buf->flags |= (1L << GLIBTOP_NETLOAD_SUBNET); } g_strlcpy (ifr.ifr_name, interface, sizeof ifr.ifr_name); if (!ioctl (skfd, SIOCGIFMTU, &ifr)) { buf->mtu = ifr.ifr_mtu; buf->flags |= (1L << GLIBTOP_NETLOAD_MTU); } g_strlcpy (ifr.ifr_name, interface, sizeof ifr.ifr_name); if (!ioctl (skfd, SIOCGIFHWADDR, &ifr)) { memcpy(buf->hwaddress, &ifr.ifr_hwaddr.sa_data, 8); buf->flags |= (1L << GLIBTOP_NETLOAD_HWADDRESS); } close (skfd); } /* * Statistics */ /* Linux 2.1.114 - don't know where exactly this was added, but * recent kernels have byte count in /proc/net/dev so we don't * need IP accounting. */ if (server->os_version_code < LINUX_VERSION_CODE(2, 1, 14)) { linux_2_0_stats(server, buf, interface); } else if (server->os_version_code > LINUX_VERSION_CODE(2, 6, 0) && has_sysfs()) { linux_2_6_stats(server, buf, interface); } else { /* 2.4 and 2.6 without /sys (?$£Z¥!) */ linux_2_4_stats(server, buf, interface); } #ifdef HAVE_IFADDRS_H get_ipv6(server, buf, interface); #endif /* HAVE_IFADDRS_H */ }