X-Git-Url: https://www.tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fsolaris%2Fdevice.c;h=f27954b1d05e6ce1674633a2683ae6c9a0c8aa7a;hb=38489e37f50e807e51bfd28ebb8b20396eed1447;hp=4940ddb593b87810885c58b0368508013970b9f1;hpb=41583d5dcfc1277b1a203478de4cce2cd0cda1b1;p=tinc diff --git a/src/solaris/device.c b/src/solaris/device.c index 4940ddb5..f27954b1 100644 --- a/src/solaris/device.c +++ b/src/solaris/device.c @@ -2,7 +2,7 @@ device.c -- Interaction with Solaris tun device Copyright (C) 2001-2005 Ivo Timmermans, 2002-2010 OpenVPN Technologies, Inc. - 2001-2013 Guus Sliepen + 2001-2014 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -24,6 +24,7 @@ #include #include +#include #include "../conf.h" #include "../device.h" @@ -41,6 +42,7 @@ #define DEFAULT_TUN_DEVICE "/dev/tun" #define DEFAULT_TAP_DEVICE "/dev/tap" +#define IP_DEVICE "/dev/udp" static enum { DEVICE_TYPE_TUN, @@ -48,45 +50,47 @@ static enum { } device_type = DEVICE_TYPE_TUN; int device_fd = -1; -static int if_fd = -1; static int ip_fd = -1; char *device = NULL; char *iface = NULL; -static char *device_info = NULL; +static const char *device_info = NULL; static bool setup_device(void) { char *type; if(!get_config_string(lookup_config(config_tree, "Device"), &device)) { - if(routing_mode == RMODE_ROUTER) + if(routing_mode == RMODE_ROUTER) { device = xstrdup(DEFAULT_TUN_DEVICE); - else + } else { device = xstrdup(DEFAULT_TAP_DEVICE); + } } if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) { if(!strcasecmp(type, "tun")) /* use default */; - else if(!strcasecmp(type, "tap")) + else if(!strcasecmp(type, "tap")) { device_type = DEVICE_TYPE_TAP; - else { + } else { logger(DEBUG_ALWAYS, LOG_ERR, "Unknown device type %s!", type); return false; } } else { - if(strstr(device, "tap") || routing_mode != RMODE_ROUTER) + if(strstr(device, "tap") || routing_mode != RMODE_ROUTER) { device_type = DEVICE_TYPE_TAP; + } } - if(device_type == DEVICE_TYPE_TUN) + if(device_type == DEVICE_TYPE_TUN) { device_info = "Solaris tun device"; - else + } else { device_info = "Solaris tap device"; + } /* The following is black magic copied from OpenVPN. */ - if((ip_fd = open("/dev/ip", O_RDWR, 0)) < 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s\n", "/dev/ip", strerror(errno)); + if((ip_fd = open(IP_DEVICE, O_RDWR, 0)) < 0) { + logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s\n", IP_DEVICE, strerror(errno)); return false; } @@ -100,29 +104,35 @@ static bool setup_device(void) { char *ptr = device; get_config_string(lookup_config(config_tree, "Interface"), &ptr); - while(*ptr && !isdigit(*ptr)) + while(*ptr && !isdigit(*ptr)) { ptr++; + } + int ppa = atoi(ptr); /* Assign a new PPA and get its unit number. */ struct strioctl strioc_ppa = { .ic_cmd = TUNNEWPPA, - .ic_len = sizeof ppa, - .ic_dp = (char *)&ppa, + .ic_len = sizeof(ppa), + .ic_dp = (char *) &ppa, }; if(!*ptr) { /* no number given, try dynamic */ bool found = false; + while(!found && ppa < 64) { int new_ppa = ioctl(device_fd, I_STR, &strioc_ppa); + if(new_ppa >= 0) { ppa = new_ppa; found = true; break; } + ppa++; } + if(!found) { logger(DEBUG_ALWAYS, LOG_ERR, "Could not find free PPA for %s %s!", device_info, device); return false; @@ -134,6 +144,8 @@ static bool setup_device(void) { } } + int if_fd; + if((if_fd = open(device, O_RDWR, 0)) < 0) { logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s\n", device, strerror(errno)); return false; @@ -149,7 +161,8 @@ static bool setup_device(void) { { /* Remove muxes just in case they are left over from a crashed tincd */ struct lifreq ifr = {}; - strncpy(ifr.lifr_name, iface, sizeof ifr.lifr_name); + strncpy(ifr.lifr_name, iface, sizeof(ifr.lifr_name)); + if(ioctl(ip_fd, SIOCGLIFMUXID, &ifr) >= 0) { int muxid = ifr.lifr_arp_muxid; ioctl(ip_fd, I_PUNLINK, muxid); @@ -163,7 +176,7 @@ static bool setup_device(void) { if(ioctl(if_fd, IF_UNITSEL, (char *)&ppa) < 0) { logger(DEBUG_ALWAYS, LOG_ERR, "Could not set PPA %d on %s %s!", ppa, device_info, device); return false; - } + } } int arp_fd = -1; @@ -184,6 +197,7 @@ static bool setup_device(void) { logger(DEBUG_ALWAYS, LOG_ERR, "Could not set PPA %d on %s %s!", ppa, device_info, device); return false; } + if(ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0) { logger(DEBUG_ALWAYS, LOG_ERR, "Could not set flags on %s %s!", device_info, device); return false; @@ -197,13 +211,14 @@ static bool setup_device(void) { /* Pop any modules on the stream */ while(true) { - if(ioctl(ip_fd, I_POP, NULL) < 0) + if(ioctl(ip_fd, I_POP, NULL) < 0) { break; + } } /* Push arp module to ip_fd */ if(ioctl(ip_fd, I_PUSH, "arp") < 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "Could not push ARP module onto %s!", "/dev/ip"); + logger(DEBUG_ALWAYS, LOG_ERR, "Could not push ARP module onto %s!", IP_DEVICE); return false; } @@ -222,8 +237,8 @@ static bool setup_device(void) { /* Set ifname to arp */ struct strioctl strioc_if = { .ic_cmd = SIOCSLIFNAME, - .ic_len = sizeof ifr, - .ic_dp = (char *)&ifr, + .ic_len = sizeof(ifr), + .ic_dp = (char *) &ifr, }; if(ioctl(arp_fd, I_STR, &strioc_if) < 0) { @@ -244,12 +259,16 @@ static bool setup_device(void) { logger(DEBUG_ALWAYS, LOG_ERR, "Could not link %s %s to ARP", device_info, device); return false; } + close(arp_fd); } struct lifreq ifr = {}; + strncpy(ifr.lifr_name, iface, sizeof(ifr.lifr_name)); + ifr.lifr_ip_muxid = ip_muxid; + if(device_type == DEVICE_TYPE_TAP) { ifr.lifr_arp_muxid = arp_muxid; } @@ -258,6 +277,7 @@ static bool setup_device(void) { if(device_type == DEVICE_TYPE_TAP) { ioctl(ip_fd, I_PUNLINK, arp_muxid); } + ioctl(ip_fd, I_PUNLINK, ip_muxid); logger(DEBUG_ALWAYS, LOG_ERR, "Could not set multiplexor id for %s %s", device_info, device); return false; @@ -278,7 +298,8 @@ static bool setup_device(void) { static void close_device(void) { if(iface) { struct lifreq ifr = {}; - strncpy(ifr.lifr_name, iface, sizeof ifr.lifr_name); + strncpy(ifr.lifr_name, iface, sizeof(ifr.lifr_name)); + if(ioctl(ip_fd, SIOCGLIFMUXID, &ifr) >= 0) { int muxid = ifr.lifr_arp_muxid; ioctl(ip_fd, I_PUNLINK, muxid); @@ -288,51 +309,65 @@ static void close_device(void) { } close(ip_fd); + ip_fd = -1; close(device_fd); + device_fd = -1; free(device); + device = NULL; free(iface); + iface = NULL; } static bool read_packet(vpn_packet_t *packet) { - int inlen; + int result; + struct strbuf sbuf; + int f = 0; switch(device_type) { - case DEVICE_TYPE_TUN: - if((inlen = read(device_fd, packet->data + 14, MTU - 14)) <= 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); - return false; - } + case DEVICE_TYPE_TUN: + sbuf.maxlen = MTU - 14; + sbuf.buf = (char *)DATA(packet) + 14; - switch(packet->data[14] >> 4) { - case 4: - packet->data[12] = 0x08; - packet->data[13] = 0x00; - break; - case 6: - packet->data[12] = 0x86; - packet->data[13] = 0xDD; - break; - default: - logger(DEBUG_TRAFFIC, LOG_ERR, "Unknown IP version %d while reading packet from %s %s", packet->data[14] >> 4, device_info, device); - return false; - } + if((result = getmsg(device_fd, NULL, &sbuf, &f)) < 0) { + logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); + return false; + } - memset(packet->data, 0, 12); - packet->len = inlen + 14; + switch(DATA(packet)[14] >> 4) { + case 4: + DATA(packet)[12] = 0x08; + DATA(packet)[13] = 0x00; break; - case DEVICE_TYPE_TAP: - if((inlen = read(device_fd, packet->data, MTU)) <= 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); - return false; - } - - packet->len = inlen + 14; + case 6: + DATA(packet)[12] = 0x86; + DATA(packet)[13] = 0xDD; break; default: - abort(); + logger(DEBUG_TRAFFIC, LOG_ERR, "Unknown IP version %d while reading packet from %s %s", DATA(packet)[14] >> 4, device_info, device); + return false; + } + + memset(DATA(packet), 0, 12); + packet->len = sbuf.len + 14; + break; + + case DEVICE_TYPE_TAP: + sbuf.maxlen = MTU; + sbuf.buf = (char *)DATA(packet); + + if((result = getmsg(device_fd, NULL, &sbuf, &f)) < 0) { + logger(LOG_ERR, "Error while reading from %s %s: %s", device_info, device, strerror(errno)); + return false; + } + + packet->len = sbuf.len; + break; + + default: + abort(); } logger(DEBUG_TRAFFIC, LOG_DEBUG, "Read packet of %d bytes from %s", packet->len, device_info); @@ -343,23 +378,33 @@ static bool read_packet(vpn_packet_t *packet) { static bool write_packet(vpn_packet_t *packet) { logger(DEBUG_TRAFFIC, LOG_DEBUG, "Writing packet of %d bytes to %s", packet->len, device_info); + struct strbuf sbuf; + switch(device_type) { - case DEVICE_TYPE_TUN: - if(write(device_fd, packet->data + 14, packet->len - 14) < 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); - return false; - } - break; + case DEVICE_TYPE_TUN: + sbuf.len = packet->len - 14; + sbuf.buf = (char *)DATA(packet) + 14; - case DEVICE_TYPE_TAP: - if(write(device_fd, packet->data, packet->len) < 0) { - logger(DEBUG_ALWAYS, LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); - return false; - } - break; + if(putmsg(device_fd, NULL, &sbuf, 0) < 0) { + logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); + return false; + } - default: - abort(); + break; + + case DEVICE_TYPE_TAP: + sbuf.len = packet->len; + sbuf.buf = (char *)DATA(packet); + + if(putmsg(device_fd, NULL, &sbuf, 0) < 0) { + logger(LOG_ERR, "Can't write to %s %s: %s", device_info, device, strerror(errno)); + return false; + } + + break; + + default: + abort(); } return true;