int main(int argc, const char *argv[])
{
int peerfd = socket(PF_INET, SOCK_STREAM, 0);
if(peerfd == -1)
ERR_EXIT("socket");
struct sockaddr_in peeraddr;
peeraddr.sin_family = AF_INET;
peeraddr.sin_port = htons(8080);
peeraddr.sin_addr.s_addr = inet_addr("127.0.0.1");
if((connect(peerfd, (struct sockaddr*)&peeraddr, sizeof peeraddr)) < 0)
ERR_EXIT("connect");
do_service(peerfd);
close(peerfd);
return 0;
}
int main(int argc, const char *argv[])
{
int peerfd = socket(PF_INET, SOCK_STREAM, 0);
if(peerfd == -1)
ERR_EXIT("socket");
struct sockaddr_in addr;
memset(&addr, 0, sizeof addr);
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr("192.168.64.129"); //localhost
addr.sin_port = htons(8899);
socklen_t len = sizeof addr;
if(connect(peerfd, (struct sockaddr*)&addr, len) == -1)
ERR_EXIT("Connect");
do_service(peerfd);
return 0;
}
int main(int argc, const char *argv[])
{
//创建socket
int listenfd = socket(PF_INET, SOCK_STREAM, 0);
if(listenfd == -1)
ERR_EXIT("socket");
//设置端口复用
int on = 1;
if (setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
ERR_EXIT("setsockopt");
struct sockaddr_in servaddr;
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(8989);
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
//bind端口
if(bind(listenfd, (struct sockaddr*)&servaddr, sizeof servaddr) < 0)
ERR_EXIT("bind");
//listen端口
if(listen(listenfd, SOMAXCONN) < 0)
ERR_EXIT("listen");
int peerfd;
//accept请求
if((peerfd = accept(listenfd, NULL, NULL)) < 0)
ERR_EXIT("accept");
do_service(peerfd);
close(peerfd);
close(listenfd);
return 0;
}
int main(int argc, const char *argv[])
{
int peerfd = socket(PF_INET, SOCK_STREAM, 0);
if(peerfd == -1)
ERR_EXIT("socket");
struct sockaddr_in addr;
memset(&addr, 0, sizeof addr);
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr("192.168.175.133"); //localhost
addr.sin_port = htons(9999);
socklen_t len = sizeof addr;
if(connect(peerfd, (struct sockaddr*)&addr, len) == -1)
ERR_EXIT("Connect");
char buf[1024] = { 0 };
int ret = read(peerfd, buf, sizeof(buf));
printf("%s\n", buf);
do_service(peerfd);
return 0;
}
static void do_class(config_t *cpe, config_t *config, struct rs_config *rs_config)
{
config_t *cp, *cp1;
if (class_recurs > MAX_CLASS_RECURS)
{
fatal(
"do_class: nesting level too high for class '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
class_recurs++;
/* Process classes */
for (; cpe; cpe= cpe->next)
{
if (cpe->flags & CFG_SUBLIST)
{
fatal("do_class: unexpected sublist at %s:%d",
cpe->file, cpe->line);
}
if (cpe->flags & CFG_STRING)
{
fatal("do_uid: unexpected string at %s:%d",
cpe->file, cpe->line);
}
/* Find entry for the class */
for (cp= config; cp; cp= cp->next)
{
if (!(cp->flags & CFG_SUBLIST))
{
fatal("do_class: expected list at %s:%d",
cp->file, cp->line);
}
cp1= cp->list;
if ((cp1->flags & CFG_STRING) ||
(cp1->flags & CFG_SUBLIST))
{
fatal("do_class: expected word at %s:%d",
cp1->file, cp1->line);
}
/* At this place we expect the word KW_SERVICE */
if (strcmp(cp1->word, KW_SERVICE) != 0)
fatal("do_class: exected word '%S' at %s:%d",
KW_SERVICE, cp1->file, cp1->line);
cp1= cp1->next;
if ((cp1->flags & CFG_STRING) ||
(cp1->flags & CFG_SUBLIST))
{
fatal("do_class: expected word at %s:%d",
cp1->file, cp1->line);
}
/* At this place we expect the name of the service */
if (strcmp(cp1->word, cpe->word) == 0)
break;
}
if (cp == NULL)
{
fatal(
"do_class: no entry found for class '%s' at %s:%d",
cpe->word, cpe->file, cpe->line);
}
do_service(cp1->next, config, rs_config);
}
class_recurs--;
}
static const char *do_config(const char *label, char *filename, struct rs_config *rs_config)
{
config_t *config, *cp, *cpe;
struct passwd *pw;
struct rs_start *rs_start = &rs_config->rs_start;
if(!(config= config_read(filename, 0, NULL)))
return NULL; /* config file read failed. */
/* Set clean rs_start defaults. */
memset(rs_config, 0, sizeof(*rs_config));
if(!(pw= getpwnam(SERVICE_LOGIN)))
fatal("no passwd file entry for '%s'", SERVICE_LOGIN);
rs_start->rss_uid= pw->pw_uid;
rs_start->rss_sigmgr= DSRV_SM;
rs_start->rss_scheduler= DSRV_SCH;
rs_start->rss_priority= DSRV_Q;
rs_start->rss_quantum= DSRV_QT;
rs_start->rss_cpu = DSRV_CPU;
rs_start->rss_flags = RSS_VM_BASIC_CALLS | RSS_SYS_BASIC_CALLS;
/* Find an entry for our service */
for (cp= config; cp; cp= cp->next)
{
if (!(cp->flags & CFG_SUBLIST))
{
fatal("do_config: expected list at %s:%d",
cp->file, cp->line);
}
cpe= cp->list;
if ((cpe->flags & CFG_STRING) || (cpe->flags & CFG_SUBLIST))
{
fatal("do_config: expected word at %s:%d",
cpe->file, cpe->line);
}
/* At this place we expect the word KW_SERVICE */
if (strcmp(cpe->word, KW_SERVICE) != 0)
fatal("do_config: exected word '%S' at %s:%d",
KW_SERVICE, cpe->file, cpe->line);
cpe= cpe->next;
if ((cpe->flags & CFG_STRING) || (cpe->flags & CFG_SUBLIST))
{
fatal("do_config: expected word at %s:%d",
cpe->file, cpe->line);
}
/* At this place we expect the name of the service. */
if (!label || strcmp(cpe->word, label) == 0) {
label = cpe->word;
break;
}
}
if (cp == NULL)
{
fprintf(stderr, "service: service '%s' not found in '%s'\n",
label, filename);
exit(1);
}
cpe= cpe->next;
do_service(cpe, config, rs_config);
{
char *default_ipc = RSS_IPC_ALL_SYS;
if(!rs_start->rss_ipc) {
rs_start->rss_ipc= default_ipc;
rs_start->rss_ipclen= strlen(default_ipc);
}
}
/* config file read ok. */
return label;
}
int main(int argc, char* argv[])
{
int sockfd;
struct sockaddr_in servaddr;
if ( (sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
{
perror("socket fail!");
exit(EXIT_FAILURE);
}
memset(&servaddr, 0, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_port = htons(8888);
if(argv[1] == NULL)
{
argv[1] = "0.0.0.0";
}
if (inet_aton(argv[1], &servaddr.sin_addr) == 0)
{
perror("inet_aton failure!");
printf("address:%u\n", servaddr.sin_addr.s_addr);
exit(EXIT_FAILURE);
}
int on = 1;
if(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) < 0)
{
perror("setsockopt:");
exit(EXIT_FAILURE);
}
if (bind(sockfd, (struct sockaddr*)&servaddr, sizeof(servaddr)) != 0)
{
perror("bind error!");
exit(EXIT_FAILURE);
}
listen(sockfd, SOMAXCONN);
if (signal(SIGCHLD, sig_chld) == SIG_ERR) // 忽略 在linux下起作用，但不可移植
perror("signal:");
struct sockaddr_in cliaddr;
int connfd;
pid_t pid;
while(1)
{
socklen_t clilen = sizeof(cliaddr);
memset(&cliaddr, 0, sizeof(cliaddr));
if ((connfd = accept(sockfd, (struct sockaddr*)&cliaddr, &clilen)) < 0)
{
// 未必能保证所有的系统在处理信号方面都支持 SA_RESTART
// 在信号支持SA_RESTART的情况下，这个判断没必要
if (errno == EINTR)
{
fprintf(stderr, "errno == EINTR");
continue;
}
else
{
perror("accept error");
exit(EXIT_FAILURE);
}
}
fprintf(stderr, "the client addr:port,%s:%d\n", inet_ntoa(cliaddr.sin_addr), cliaddr.sin_port);
pid = fork();
if (pid == 0) //子进程
{
close(sockfd);
do_service(connfd);
exit(0);
}
else if (pid < 0)
{
perror("fork error");
exit(EXIT_FAILURE);
}
close(connfd);
}
fputs("will close connfd\n", stderr);
close(connfd);
return 0;
}
int main(int argc, char *argv[])
{
int i, rc;
if (argc < 3) {
usage();
rc = 1;
goto out;
}
rc = setup_signal_handling();
if (rc != 0) {
fprintf(stderr, "FAIL: Couldn't set up signal handler\n");
rc = 1;
goto out;
}
for (i = 1; i < argc && interface == NULL; i++) {
char *arg = argv[i];
if (strcmp(arg, "--system") == 0) {
type = DBUS_BUS_SYSTEM;
session_or_system = TRUE;
} else if (strcmp(arg, "--session") == 0) {
type = DBUS_BUS_SESSION;
session_or_system = TRUE;
} else if (strstr(arg, "--address") == arg) {
address = strchr(arg, '=');
if (address == NULL) {
fprintf(stderr,
"FAIL: \"--address=\" requires an ADDRESS\n");
usage();
rc = 1;
goto out;
} else {
address = address + 1;
}
} else if (strstr(arg, "--name=") == arg)
name = strchr(arg, '=') + 1;
else if (strstr(arg, "--log=") == arg) {
char *path = strchr(arg, '=') + 1;
log_fd = open(path, O_CREAT | O_TRUNC | O_WRONLY,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP |
S_IROTH | S_IWOTH);
if (log_fd < 0) {
fprintf(stderr,
"FAIL: Couldn't open log file \"%s\"\n",
path);
exit(1);
}
} else if (strstr(arg, "--lock-fd=") == arg) {
char *fd = strchr(arg, '=') + 1;
lock_fd = atoi(fd);
} else if (!strcmp(arg, "--help")) {
usage();
rc = 0;
goto out;
} else if (arg[0] == '-') {
usage();
rc = 1;
goto out;
} else if (path == NULL)
path = arg;
else /* interface == NULL guaranteed by the 'while' loop */
interface = arg;
}
if (name == NULL || path == NULL || interface == NULL || i < argc) {
usage();
rc = 1;
goto out;
}
if (session_or_system && (address != NULL)) {
fprintf(stderr,
"FAIL: \"--address\" may not be used with \"--system\" or \"--session\"\n");
usage();
rc = 1;
goto out;
}
dbus_error_init(&error);
if (address != NULL)
connection = dbus_connection_open(address, &error);
else
connection = dbus_bus_get(type, &error);
if (connection == NULL) {
fprintf(stderr,
"FAIL: Failed to open connection to \"%s\" message bus: %s\n",
address ? address :
((type == DBUS_BUS_SYSTEM) ? "system" : "session"),
error.message);
dbus_error_free(&error);
rc = 1;
goto out;
} else if (address != NULL)
dbus_bus_register(connection, &error);
rc = do_service();
out:
if (connection)
dbus_connection_unref(connection);
unlock_fd();
if (rc == 0)
printf("PASS\n");
exit(rc);
}
/** Main routine for petal */
int main(int argc, char* argv[])
{
int c;
int port = 443;
char* addr = "127.0.0.1", *key = "petal.key", *cert = "petal.pem";
#ifdef USE_WINSOCK
WSADATA wsa_data;
if((c=WSAStartup(MAKEWORD(2,2), &wsa_data)) != 0)
{ printf("WSAStartup failed\n"); exit(1); }
atexit((void (*)(void))WSACleanup);
#endif
/* parse the options */
while( (c=getopt(argc, argv, "a:c:k:hp:v")) != -1) {
switch(c) {
case 'a':
addr = optarg;
break;
case 'c':
cert = optarg;
break;
case 'k':
key = optarg;
break;
case 'p':
port = atoi(optarg);
break;
case 'v':
verb++;
break;
case '?':
case 'h':
default:
usage();
}
}
argc -= optind;
argv += optind;
if(argc != 0)
usage();
#ifdef SIGPIPE
(void)signal(SIGPIPE, SIG_IGN);
#endif
#ifdef HAVE_ERR_LOAD_CRYPTO_STRINGS
ERR_load_crypto_strings();
#endif
ERR_load_SSL_strings();
#if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_CRYPTO)
OpenSSL_add_all_algorithms();
#else
OPENSSL_init_crypto(OPENSSL_INIT_ADD_ALL_CIPHERS
| OPENSSL_INIT_ADD_ALL_DIGESTS
| OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
#endif
#if OPENSSL_VERSION_NUMBER < 0x10100000 || !defined(HAVE_OPENSSL_INIT_SSL)
(void)SSL_library_init();
#else
(void)OPENSSL_init_ssl(0, NULL);
#endif
do_service(addr, port, key, cert);
#ifdef HAVE_CRYPTO_CLEANUP_ALL_EX_DATA
CRYPTO_cleanup_all_ex_data();
#endif
#ifdef HAVE_ERR_FREE_STRINGS
ERR_free_strings();
#endif
return 0;
}
void invoke_new_session(struct xnbd_info *xnbd, int csockfd)
{
struct xnbd_session *ses = g_malloc0(sizeof(struct xnbd_session));
ses->clientfd = csockfd;
ses->xnbd = xnbd;
/* used for sending msg to the session process */
get_event_connecter(&ses->event_notifier_fd, &ses->event_listener_fd);
xnbd_session_initialize_connections(xnbd, ses);
info("negotiations done");
pid_t pid = fork();
if (pid == -1)
err("fork failed");
if (pid == 0) {
/* child */
close(ses->event_notifier_fd);
for (GList *list = g_list_first(xnbd->sessions); list != NULL; list = g_list_next(list)) {
struct xnbd_session *s = (struct xnbd_session *) list->data;
info("cleanup pid %d", s->pid);
if (xnbd->proxymode)
close(s->remotefd);
info(" clientfd %d", s->clientfd);
close(s->clientfd);
/* this must be commented out, closed alreay in the parent */
//close(s->event_listener_fd);
//info(" s->event_listener_fd %d", s->event_listener_fd);
close(s->event_notifier_fd);
info(" s->event_notifier_fd %d", s->event_notifier_fd);
}
for (nfds_t j = 0; j < nlistened; j++)
close(eventfds[j].fd);
dbg("new connection");
info("do service %d", getpid());
//{
// pid_t mypid = getpid();
// char buf[100];
// sprintf(buf, "lsof -p %d", mypid);
// system(buf);
// sleep(10);
//}
do_service(ses);
close(csockfd);
info("process %d exit", getpid());
exit(EXIT_SUCCESS);
}
close(ses->event_listener_fd);
ses->pid = pid;
xnbd->sessions = g_list_append(xnbd->sessions, ses);
/* parent */
//close(csockfd);
}
int main(int argc, const char *argv[])
{
if(argc<=2)
{
printf("Usage:%s ip_addr, ip_port\n", argv[0]);
return -1;
}
signal(SIGCHLD, handle);
const char *ip = argv[1];
int port = atoi(argv[2]);
int sockfd;
if((sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP))<0)
{
ERR_EXIT("socket");
}
struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
inet_pton(AF_INET, ip, &addr.sin_addr);
int on=1;
if(setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on))<0)
{
ERR_EXIT("setsockopt");
}
if(bind(sockfd, (struct sockaddr*)&addr, sizeof(addr))<0)
{
ERR_EXIT("bind");
}
if(listen(sockfd, SOMAXCONN)<0)
{
ERR_EXIT("listen");
}
struct sockaddr_in peeraddr;
socklen_t peerlen = sizeof(peeraddr);
pid_t pid;
int conn;
while(1)
{
if((conn = accept(sockfd, (struct sockaddr *)&peeraddr, &peerlen))<0)
{
ERR_EXIT("accept");
}
printf("ip:%s, port=%d\n", inet_ntoa(peeraddr.sin_addr), ntohs(peeraddr.sin_port));
pid = fork();
if(pid==-1)
{
ERR_EXIT("fork");
}
if(pid == 0)
{
close(sockfd);
do_service(conn);
exit(EXIT_SUCCESS);
}
else
{
close(conn);
}
}
return 0;
}