本文整理汇总了C++中sockerror函数的典型用法代码示例。如果您正苦于以下问题：C++ sockerror函数的具体用法？C++ sockerror怎么用？C++ sockerror使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了sockerror函数的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: unbind_ports
/* clear fds, close old ports */
void unbind_ports(void) {
SERVICE_OPTIONS *opt;
#ifdef HAVE_STRUCT_SOCKADDR_UN
struct stat st; /* buffer for stat */
#endif
s_poll_init(fds);
s_poll_add(fds, signal_pipe[0], 1, 0);
for(opt=service_options.next; opt; opt=opt->next)
if(opt->option.accept && opt->fd>=0) {
closesocket(opt->fd);
s_log(LOG_DEBUG, "Service [%s] closed (FD=%d)",
opt->servname, opt->fd);
opt->fd=-1;
#ifdef HAVE_STRUCT_SOCKADDR_UN
if(opt->local_addr.sa.sa_family==AF_UNIX) {
if(lstat(opt->local_addr.un.sun_path, &st))
sockerror(opt->local_addr.un.sun_path);
else if(!S_ISSOCK(st.st_mode))
s_log(LOG_ERR, "Not a socket: %s",
opt->local_addr.un.sun_path);
else if(unlink(opt->local_addr.un.sun_path))
sockerror(opt->local_addr.un.sun_path);
else
s_log(LOG_DEBUG, "Socket removed: %s",
opt->local_addr.un.sun_path);
}
#endif
}
}示例2: read_blocking
void read_blocking(CLI *c, int fd, u8 *ptr, int len) {
/* simulate a blocking read */
s_poll_set fds;
int num;
while(len>0) {
s_poll_zero(&fds);
s_poll_add(&fds, fd, 1, 0); /* read */
switch(s_poll_wait(&fds, c->opt->timeout_busy)) {
case -1:
sockerror("read_blocking: s_poll_wait");
longjmp(c->err, 1); /* error */
case 0:
s_log(LOG_INFO, "read_blocking: s_poll_wait timeout");
longjmp(c->err, 1); /* timeout */
case 1:
break; /* OK */
default:
s_log(LOG_ERR, "read_blocking: s_poll_wait unknown result");
longjmp(c->err, 1); /* error */
}
num=readsocket(fd, ptr, len);
switch(num) {
case -1: /* error */
sockerror("readsocket (read_blocking)");
longjmp(c->err, 1);
case 0: /* EOF */
s_log(LOG_ERR, "Unexpected socket close (read_blocking)");
longjmp(c->err, 1);
}
ptr+=num;
len-=num;
}
}示例3: drop_privileges
int drop_privileges(int critical) {
#if defined(USE_WIN32) || defined(__vms) || defined(USE_OS2)
(void)critical; /* squash the unused parameter warning */
#else
#ifdef HAVE_SETGROUPS
gid_t gr_list[1];
#endif
/* set uid and gid */
if(global_options.gid) {
if(setgid(global_options.gid) && critical) {
sockerror("setgid");
return 1;
}
#ifdef HAVE_SETGROUPS
gr_list[0]=global_options.gid;
if(setgroups(1, gr_list) && critical) {
sockerror("setgroups");
return 1;
}
#endif
}
if(global_options.uid) {
if(setuid(global_options.uid) && critical) {
sockerror("setuid");
return 1;
}
}
#endif /* standard Unix */
return 0;
}示例4: connect_wait
/* wait for the result of a non-blocking connect */
static int connect_wait(CLI *c, int fd, int timeout) {
int error;
socklen_t optlen;
s_log(LOG_DEBUG, "connect_wait: waiting %d seconds", timeout);
s_poll_zero(&c->fds);
s_poll_add(&c->fds, fd, 1, 1);
switch(s_poll_wait(&c->fds, timeout)) {
case -1:
sockerror("connect_wait: s_poll_wait");
return -1; /* error */
case 0:
s_log(LOG_INFO, "connect_wait: s_poll_wait timeout");
return -1; /* error */
default:
if(s_poll_canread(&c->fds, fd)) {
/* just connected socket should not be ready for read */
/* get the resulting error code, now */
optlen=sizeof(error);
if(!getsockopt(fd, SOL_SOCKET, SO_ERROR, (void *)&error, &optlen))
errno=error;
if(errno) { /* really an error? */
sockerror("connect_wait: getsockopt");
return -1; /* connection failed */
}
}
if(s_poll_canwrite(&c->fds, fd)) {
s_log(LOG_DEBUG, "connect_wait: connected");
return 0; /* success */
}
s_log(LOG_ERR, "connect_wait: unexpected s_poll_wait result");
return -1; /* unexpected result */
}
return -1; /* should not be possible */
}示例5: s_write
void s_write(CLI *c, int fd, const void *buf, int len) {
/* simulate a blocking write */
u8 *ptr=(u8 *)buf;
int num;
while(len>0) {
s_poll_init(c->fds);
s_poll_add(c->fds, fd, 0, 1); /* write */
switch(s_poll_wait(c->fds, c->opt->timeout_busy, 0)) {
case -1:
sockerror("s_write: s_poll_wait");
longjmp(c->err, 1); /* error */
case 0:
s_log(LOG_INFO, "s_write: s_poll_wait:"
" TIMEOUTbusy exceeded: sending reset");
longjmp(c->err, 1); /* timeout */
case 1:
break; /* OK */
default:
s_log(LOG_ERR, "s_write: s_poll_wait: unknown result");
longjmp(c->err, 1); /* error */
}
num=writesocket(fd, (void *)ptr, len);
switch(num) {
case -1: /* error */
sockerror("writesocket (s_write)");
longjmp(c->err, 1);
}
ptr+=num;
len-=num;
}
}示例6: set_nonblock
void set_nonblock(SOCKET fd, unsigned long nonblock) {
#if defined F_GETFL && defined F_SETFL && defined O_NONBLOCK && !defined __INNOTEK_LIBC__
int err, flags;
do {
flags=fcntl(fd, F_GETFL, 0);
} while(flags<0 && get_last_socket_error()==S_EINTR);
if(flags<0) {
sockerror("fcntl GETFL"); /* non-critical */
return;
}
if(nonblock)
flags|=O_NONBLOCK;
else
flags&=~O_NONBLOCK;
do {
err=fcntl(fd, F_SETFL, flags);
} while(err<0 && get_last_socket_error()==S_EINTR);
if(err<0)
sockerror("fcntl SETFL"); /* non-critical */
#else /* WIN32 or similar */
if(ioctlsocket(fd, (long)FIONBIO, &nonblock)<0)
sockerror("ioctlsocket"); /* non-critical */
#if 0
else
s_log(LOG_DEBUG, "Socket %d set to %s mode",
fd, nonblock ? "non-blocking" : "blocking");
#endif
#endif
}示例7: write_blocking
void write_blocking(CLI *c, int fd, u8 *ptr, int len) {
/* simulate a blocking write */
s_poll_set fds;
int num;
while(len>0) {
s_poll_zero(&fds);
s_poll_add(&fds, fd, 0, 1); /* write */
switch(s_poll_wait(&fds, c->opt->timeout_busy)) {
case -1:
sockerror("write_blocking: s_poll_wait");
longjmp(c->err, 1); /* error */
case 0:
s_log(LOG_INFO, "write_blocking: s_poll_wait timeout");
longjmp(c->err, 1); /* timeout */
case 1:
break; /* OK */
default:
s_log(LOG_ERR, "write_blocking: s_poll_wait unknown result");
longjmp(c->err, 1); /* error */
}
num=writesocket(fd, ptr, len);
switch(num) {
case -1: /* error */
sockerror("writesocket (write_blocking)");
longjmp(c->err, 1);
}
ptr+=num;
len-=num;
}
}示例8: local_bind
static void local_bind(CLI * c)
{
if (!c->bind_addr)
return;
if (ntohs(c->bind_addr->in.sin_port) >= 1024) {
if (!bind(c->fd, &c->bind_addr->sa, addr_len(c->bind_addr))) {
s_log(LOG_INFO,
"local_bind succeeded on the original port");
return;
}
if (get_last_socket_error() != S_EADDRINUSE) {
sockerror("local_bind (original port)");
longjmp(c->err, 1);
}
}
c->bind_addr->in.sin_port = htons(0);
if (!bind(c->fd, &c->bind_addr->sa, addr_len(c->bind_addr))) {
s_log(LOG_INFO, "local_bind succeeded on an ephemeral port");
return;
}
sockerror("local_bind (ephemeral port)");
longjmp(c->err, 1);
}示例9: make_sockets
int make_sockets(SOCKET fd[2]) { /* make a pair of connected ipv4 sockets */
#ifdef INET_SOCKET_PAIR
struct sockaddr_in addr;
socklen_t addrlen;
SOCKET s; /* temporary socket awaiting for connection */
/* create two *blocking* sockets first */
s=s_socket(AF_INET, SOCK_STREAM, 0, 0, "make_sockets: s_socket#1");
if(s==INVALID_SOCKET)
return 1;
fd[1]=s_socket(AF_INET, SOCK_STREAM, 0, 0, "make_sockets: s_socket#2");
if(fd[1]==INVALID_SOCKET) {
closesocket(s);
return 1;
}
addrlen=sizeof addr;
memset(&addr, 0, sizeof addr);
addr.sin_family=AF_INET;
addr.sin_addr.s_addr=htonl(INADDR_LOOPBACK);
addr.sin_port=htons(0); /* dynamic port allocation */
if(bind(s, (struct sockaddr *)&addr, addrlen))
log_error(LOG_DEBUG, get_last_socket_error(), "make_sockets: bind#1");
if(bind(fd[1], (struct sockaddr *)&addr, addrlen))
log_error(LOG_DEBUG, get_last_socket_error(), "make_sockets: bind#2");
if(listen(s, 1)) {
sockerror("make_sockets: listen");
closesocket(s);
closesocket(fd[1]);
return 1;
}
if(getsockname(s, (struct sockaddr *)&addr, &addrlen)) {
sockerror("make_sockets: getsockname");
closesocket(s);
closesocket(fd[1]);
return 1;
}
if(connect(fd[1], (struct sockaddr *)&addr, addrlen)) {
sockerror("make_sockets: connect");
closesocket(s);
closesocket(fd[1]);
return 1;
}
fd[0]=s_accept(s, (struct sockaddr *)&addr, &addrlen, 1,
"make_sockets: s_accept");
if(fd[0]==INVALID_SOCKET) {
closesocket(s);
closesocket(fd[1]);
return 1;
}
closesocket(s); /* don't care about the result */
set_nonblock(fd[0], 1);
set_nonblock(fd[1], 1);
#else
if(s_socketpair(AF_UNIX, SOCK_STREAM, 0, fd, 1, "make_sockets: socketpair"))
return 1;
#endif
return 0;
}示例10: init_local
static void init_local(CLI * c)
{
SOCKADDR_UNION addr;
socklen_t addr_len;
char *accepted_address;
addr_len = sizeof(SOCKADDR_UNION);
c->local_rfd.is_socket =
!getpeername(c->local_rfd.fd, &addr.sa, &addr_len);
if (c->local_rfd.is_socket) {
memcpy(&c->peer_addr.sa, &addr.sa, addr_len);
c->peer_addr_len = addr_len;
if (set_socket_options(c->local_rfd.fd, 1))
s_log(LOG_WARNING,
"Failed to set local socket options");
} else {
if (get_last_socket_error() != S_ENOTSOCK) {
sockerror("getpeerbyname (local_rfd)");
longjmp(c->err, 1);
}
}
if (c->local_rfd.fd == c->local_wfd.fd) {
c->local_wfd.is_socket = c->local_rfd.is_socket;
} else {
addr_len = sizeof(SOCKADDR_UNION);
c->local_wfd.is_socket =
!getpeername(c->local_wfd.fd, &addr.sa, &addr_len);
if (c->local_wfd.is_socket) {
if (!c->local_rfd.is_socket) {
memcpy(&c->peer_addr.sa, &addr.sa, addr_len);
c->peer_addr_len = addr_len;
}
if (set_socket_options(c->local_wfd.fd, 1))
s_log(LOG_WARNING,
"Failed to set local socket options");
} else {
if (get_last_socket_error() != S_ENOTSOCK) {
sockerror("getpeerbyname (local_wfd)");
longjmp(c->err, 1);
}
}
}
if (!c->local_rfd.is_socket && !c->local_rfd.is_socket) {
s_log(LOG_NOTICE, "Service [%s] accepted connection",
c->opt->servname);
return;
}
accepted_address = s_ntop(&c->peer_addr, c->peer_addr_len);
auth_user(c, accepted_address);
s_log(LOG_NOTICE, "Service [%s] accepted connection from %s",
c->opt->servname, accepted_address);
str_free(accepted_address);
}示例11: s_read
void s_read(CLI *c, int fd, void *ptr, int len) {
/* simulate a blocking read */
int num;
while(len>0) {
s_poll_init(c->fds);
s_poll_add(c->fds, fd, 1, 0); /* read */
switch(s_poll_wait(c->fds, c->opt->timeout_busy, 0)) {
case -1:
sockerror("s_read: s_poll_wait");
longjmp(c->err, 1); /* error */
case 0:
s_log(LOG_INFO, "s_read: s_poll_wait:"
" TIMEOUTbusy exceeded: sending reset");
longjmp(c->err, 1); /* timeout */
case 1:
break; /* OK */
default:
s_log(LOG_ERR, "s_read: s_poll_wait: unknown result");
longjmp(c->err, 1); /* error */
}
num=readsocket(fd, ptr, len);
switch(num) {
case -1: /* error */
sockerror("readsocket (s_read)");
longjmp(c->err, 1);
case 0: /* EOF */
s_log(LOG_ERR, "Unexpected socket close (s_read)");
longjmp(c->err, 1);
}
ptr=(u8 *)ptr+num;
len-=num;
}
}示例12: drop_privileges
int drop_privileges(int critical) {
#ifdef HAVE_SETGROUPS
gid_t gr_list[1];
#endif
/* set uid and gid */
if(global_options.gid) {
if(setgid(global_options.gid) && critical) {
sockerror("setgid");
return 1;
}
#ifdef HAVE_SETGROUPS
gr_list[0]=global_options.gid;
if(setgroups(1, gr_list) && critical) {
sockerror("setgroups");
return 1;
}
#endif
}
if(global_options.uid) {
if(setuid(global_options.uid) && critical) {
sockerror("setuid");
return 1;
}
}
return 0;
}示例13: connect_remote
static int connect_remote(CLI *c) { /* connect to remote host */
SOCKADDR_UNION bind_addr, addr;
SOCKADDR_LIST resolved_list, *address_list;
int error;
int s; /* destination socket */
u16 i;
/* setup address_list */
if(c->opt->option.delayed_lookup) {
resolved_list.num=0;
if(!name2addrlist(&resolved_list,
c->opt->remote_address, DEFAULT_LOOPBACK))
return -1; /* no host resolved */
address_list=&resolved_list;
} else /* use pre-resolved addresses */
address_list=&c->opt->remote_addr;
/* try to connect each host from the list */
for(i=0; i<address_list->num; i++) {
memcpy(&addr, address_list->addr + address_list->cur,
sizeof(SOCKADDR_UNION));
address_list->cur=(address_list->cur+1)%address_list->num;
/* race condition is possible, but harmless in this case */
if((s=socket(addr.sa.sa_family, SOCK_STREAM, 0))<0) {
sockerror("remote socket");
return -1;
}
if(alloc_fd(s))
return -1;
if(c->bind_addr.num) { /* explicit local bind or transparent proxy */
memcpy(&bind_addr, &c->bind_addr.addr[0], sizeof(SOCKADDR_UNION));
if(bind(s, &bind_addr.sa, addr_len(bind_addr))<0) {
sockerror("bind transparent");
closesocket(s);
return -1;
}
}
/* try to connect for the 1st time */
s_ntop(c->connecting_address, &addr);
s_log(LOG_DEBUG, "%s connecting %s",
c->opt->servname, c->connecting_address);
if(!connect(s, &addr.sa, addr_len(addr)))
return s; /* no error -> success (should not be possible) */
error=get_last_socket_error();
if(error!=EINPROGRESS && error!=EWOULDBLOCK) {
s_log(LOG_ERR, "remote connect (%s): %s (%d)",
c->connecting_address, my_strerror(error), error);
closesocket(s);
continue; /* next IP */
}
if(!connect_wait(c, s, c->opt->timeout_connect))
return s; /* success! */
closesocket(s); /* error -> next IP */
}
return -1;
}示例14: bind_ports
/* open new ports, update fds */
int bind_ports(void) {
SERVICE_OPTIONS *opt;
char *local_address;
#ifdef USE_LIBWRAP
/* execute after parse_commandline() to know service_options.next,
* but as early as possible to avoid leaking file descriptors */
/* retry on each bind_ports() in case stunnel.conf was reloaded
without "libwrap = no" */
libwrap_init();
#endif /* USE_LIBWRAP */
s_poll_init(fds);
s_poll_add(fds, signal_pipe[0], 1, 0);
/* allow clean unbind_ports() even though
bind_ports() was not fully performed */
for(opt=service_options.next; opt; opt=opt->next)
if(opt->option.accept)
opt->fd=-1;
for(opt=service_options.next; opt; opt=opt->next) {
if(opt->option.accept) {
opt->fd=s_socket(opt->local_addr.sa.sa_family,
SOCK_STREAM, 0, 1, "accept socket");
if(opt->fd<0)
return 1;
if(set_socket_options(opt->fd, 0)<0) {
closesocket(opt->fd);
return 1;
}
/* local socket can't be unnamed */
local_address=s_ntop(&opt->local_addr, addr_len(&opt->local_addr));
if(bind(opt->fd, &opt->local_addr.sa, addr_len(&opt->local_addr))) {
s_log(LOG_ERR, "Error binding service [%s] to %s",
opt->servname, local_address);
sockerror("bind");
closesocket(opt->fd);
str_free(local_address);
return 1;
}
if(listen(opt->fd, SOMAXCONN)) {
sockerror("listen");
closesocket(opt->fd);
str_free(local_address);
return 1;
}
s_poll_add(fds, opt->fd, 1, 0);
s_log(LOG_DEBUG, "Service [%s] (FD=%d) bound to %s",
opt->servname, opt->fd, local_address);
str_free(local_address);
} else if(opt->option.program && opt->option.remote) {
/* create exec+connect services */
create_client(-1, -1,
alloc_client_session(opt, -1, -1), client_thread);
}
}
return 0; /* OK */
}示例15: s_poll_init
char *fd_getline(CLI *c, int fd) {
char *line, *tmpline;
int ptr=0, allocated=32;
line=str_alloc(allocated);
for(;;) {
s_poll_init(c->fds);
s_poll_add(c->fds, fd, 1, 0); /* read */
switch(s_poll_wait(c->fds, c->opt->timeout_busy, 0)) {
case -1:
sockerror("fd_getline: s_poll_wait");
str_free(line);
longjmp(c->err, 1); /* error */
case 0:
s_log(LOG_INFO, "fd_getline: s_poll_wait:"
" TIMEOUTbusy exceeded: sending reset");
str_free(line);
longjmp(c->err, 1); /* timeout */
case 1:
break; /* OK */
default:
s_log(LOG_ERR, "fd_getline: s_poll_wait: Unknown result");
str_free(line);
longjmp(c->err, 1); /* error */
}
if(allocated<ptr+1) {
allocated*=2;
line=str_realloc(line, allocated);
}
switch(readsocket(fd, line+ptr, 1)) {
case -1: /* error */
sockerror("fd_getline: readsocket");
str_free(line);
longjmp(c->err, 1);
case 0: /* EOF */
s_log(LOG_ERR, "fd_getline: Unexpected socket close");
str_free(line);
longjmp(c->err, 1);
}
if(line[ptr]=='\r')
continue;
if(line[ptr]=='\n')
break;
if(line[ptr]=='\0')
break;
if(++ptr>65536) { /* >64KB --> DoS protection */
s_log(LOG_ERR, "fd_getline: Line too long");
str_free(line);
longjmp(c->err, 1);
}
}
line[ptr]='\0';
tmpline=str_dup(line);
safestring(tmpline);
s_log(LOG_DEBUG, " <- %s", tmpline);
str_free(tmpline);
return line;
}