diff options
Diffstat (limited to 'usr.sbin/ppp/udp.c')
-rw-r--r-- | usr.sbin/ppp/udp.c | 335 |
1 files changed, 0 insertions, 335 deletions
diff --git a/usr.sbin/ppp/udp.c b/usr.sbin/ppp/udp.c deleted file mode 100644 index d9f3252..0000000 --- a/usr.sbin/ppp/udp.c +++ /dev/null @@ -1,335 +0,0 @@ -/*- - * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netdb.h> - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sysexits.h> -#include <sys/stat.h> -#include <sys/uio.h> -#include <termios.h> -#include <unistd.h> - -#include "layer.h" -#include "defs.h" -#include "mbuf.h" -#include "log.h" -#include "timer.h" -#include "lqr.h" -#include "hdlc.h" -#include "throughput.h" -#include "fsm.h" -#include "lcp.h" -#include "ccp.h" -#include "link.h" -#include "async.h" -#include "descriptor.h" -#include "physical.h" -#include "main.h" -#include "udp.h" - - -#define UDP_CONNECTED 1 -#define UDP_UNCONNECTED 2 -#define UDP_MAYBEUNCONNECTED 3 - -struct udpdevice { - struct device dev; /* What struct physical knows about */ - struct sockaddr_in sock; /* peer address */ - unsigned connected : 2; /* Have we connect()d ? */ -}; - -#define device2udp(d) ((d)->type == UDP_DEVICE ? (struct udpdevice *)d : NULL) - -unsigned -udp_DeviceSize(void) -{ - return sizeof(struct udpdevice); -} - -static ssize_t -udp_Sendto(struct physical *p, const void *v, size_t n) -{ - struct udpdevice *dev = device2udp(p->handler); - int ret; - - switch (dev->connected) { - case UDP_CONNECTED: - ret = write(p->fd, v, n); - break; - - case UDP_UNCONNECTED: - default: - ret = sendto(p->fd, v, n, 0, (struct sockaddr *)&dev->sock, - sizeof dev->sock); - break; - } - if (dev->connected == UDP_MAYBEUNCONNECTED) { - if (ret == -1 && errno == EISCONN) { - dev->connected = UDP_CONNECTED; - ret = write(p->fd, v, n); - } else - dev->connected = UDP_UNCONNECTED; - } - - return ret; -} - -static ssize_t -udp_Recvfrom(struct physical *p, void *v, size_t n) -{ - struct udpdevice *dev = device2udp(p->handler); - int sz, ret; - - if (dev->connected == UDP_CONNECTED) - return read(p->fd, v, n); - - sz = sizeof dev->sock; - ret = recvfrom(p->fd, v, n, 0, (struct sockaddr *)&dev->sock, &sz); - - if (*p->name.full == '\0') { - snprintf(p->name.full, sizeof p->name.full, "%s:%d/udp", - inet_ntoa(dev->sock.sin_addr), ntohs(dev->sock.sin_port)); - p->name.base = p->name.full; - } - - return ret; -} - -static void -udp_Free(struct physical *p) -{ - struct udpdevice *dev = device2udp(p->handler); - - free(dev); -} - -static void -udp_device2iov(struct device *d, struct iovec *iov, int *niov, - int maxiov __unused, int *auxfd __unused, int *nauxfd __unused) -{ - int sz = physical_MaxDeviceSize(); - - iov[*niov].iov_base = realloc(d, sz); - if (iov[*niov].iov_base == NULL) { - log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); - AbortProgram(EX_OSERR); - } - iov[*niov].iov_len = sz; - (*niov)++; -} - -static const struct device baseudpdevice = { - UDP_DEVICE, - "udp", - 0, - { CD_NOTREQUIRED, 0 }, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - udp_Free, - udp_Recvfrom, - udp_Sendto, - udp_device2iov, - NULL, - NULL, - NULL -}; - -struct device * -udp_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, - int maxiov __unused, int *auxfd __unused, int *nauxfd __unused) -{ - if (type == UDP_DEVICE) { - struct udpdevice *dev = (struct udpdevice *)iov[(*niov)++].iov_base; - - dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ - if (dev == NULL) { - log_Printf(LogALERT, "Failed to allocate memory: %d\n", - (int)(sizeof *dev)); - AbortProgram(EX_OSERR); - } - - /* Refresh function pointers etc */ - memcpy(&dev->dev, &baseudpdevice, sizeof dev->dev); - - physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNC); - return &dev->dev; - } - - return NULL; -} - -static struct udpdevice * -udp_CreateDevice(struct physical *p, char *host, char *port) -{ - struct udpdevice *dev; - struct servent *sp; - - if ((dev = malloc(sizeof *dev)) == NULL) { - log_Printf(LogWARN, "%s: Cannot allocate a udp device: %s\n", - p->link.name, strerror(errno)); - return NULL; - } - - dev->sock.sin_family = AF_INET; - dev->sock.sin_addr = GetIpAddr(host); - if (dev->sock.sin_addr.s_addr == INADDR_NONE) { - log_Printf(LogWARN, "%s: %s: unknown host\n", p->link.name, host); - free(dev); - return NULL; - } - dev->sock.sin_port = htons(atoi(port)); - if (dev->sock.sin_port == 0) { - sp = getservbyname(port, "udp"); - if (sp) - dev->sock.sin_port = sp->s_port; - else { - log_Printf(LogWARN, "%s: %s: unknown service\n", p->link.name, port); - free(dev); - return NULL; - } - } - - log_Printf(LogPHASE, "%s: Connecting to %s:%s/udp\n", p->link.name, - host, port); - - p->fd = socket(PF_INET, SOCK_DGRAM, 0); - if (p->fd >= 0) { - log_Printf(LogDEBUG, "%s: Opened udp socket %s\n", p->link.name, - p->name.full); - if (connect(p->fd, (struct sockaddr *)&dev->sock, sizeof dev->sock) == 0) { - dev->connected = UDP_CONNECTED; - return dev; - } else - log_Printf(LogWARN, "%s: connect: %s\n", p->name.full, strerror(errno)); - } else - log_Printf(LogWARN, "%s: socket: %s\n", p->name.full, strerror(errno)); - - close(p->fd); - p->fd = -1; - free(dev); - - return NULL; -} - -struct device * -udp_Create(struct physical *p) -{ - char *cp, *host, *port, *svc; - struct udpdevice *dev; - - dev = NULL; - if (p->fd < 0) { - if ((cp = strchr(p->name.full, ':')) != NULL && !strchr(cp + 1, ':')) { - *cp = '\0'; - host = p->name.full; - port = cp + 1; - svc = strchr(port, '/'); - if (svc && strcasecmp(svc, "/udp")) { - *cp = ':'; - return NULL; - } - if (svc) { - p->fd--; /* We own the device but maybe can't use it - change fd */ - *svc = '\0'; - } - - if (*host && *port) - dev = udp_CreateDevice(p, host, port); - - *cp = ':'; - if (svc) - *svc = '/'; - } - } else { - /* See if we're a connected udp socket */ - struct stat st; - - if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) { - int type, sz; - - sz = sizeof type; - if (getsockopt(p->fd, SOL_SOCKET, SO_TYPE, &type, &sz) == -1) { - log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name); - close(p->fd); - p->fd = -1; - return NULL; - } - - if (sz == sizeof type && type == SOCK_DGRAM) { - struct sockaddr_in sock; - struct sockaddr *sockp = (struct sockaddr *)&sock; - - if ((dev = malloc(sizeof *dev)) == NULL) { - log_Printf(LogWARN, "%s: Cannot allocate a udp device: %s\n", - p->link.name, strerror(errno)); - return NULL; - } - - if (getpeername(p->fd, sockp, &sz) == 0) { - log_Printf(LogPHASE, "%s: Link is a connected udp socket\n", - p->link.name); - dev->connected = UDP_CONNECTED; - } else { - log_Printf(LogPHASE, "%s: Link is a disconnected udp socket\n", - p->link.name); - - dev->connected = UDP_MAYBEUNCONNECTED; - - if (p->link.lcp.cfg.openmode != OPEN_PASSIVE) { - log_Printf(LogPHASE, "%s: Changing openmode to PASSIVE\n", - p->link.name); - p->link.lcp.cfg.openmode = OPEN_PASSIVE; - } - } - } - } - } - - if (dev) { - memcpy(&dev->dev, &baseudpdevice, sizeof dev->dev); - physical_SetupStack(p, dev->dev.name, PHYSICAL_FORCE_SYNC); - if (p->cfg.cd.necessity != CD_DEFAULT) - log_Printf(LogWARN, "Carrier settings ignored\n"); - return &dev->dev; - } - - return NULL; -} |