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Diffstat (limited to 'openssl/demos/tunala/ip.c')
-rw-r--r--openssl/demos/tunala/ip.c221
1 files changed, 112 insertions, 109 deletions
diff --git a/openssl/demos/tunala/ip.c b/openssl/demos/tunala/ip.c
index 96ef4e653..b172d2e4e 100644
--- a/openssl/demos/tunala/ip.c
+++ b/openssl/demos/tunala/ip.c
@@ -2,145 +2,148 @@
#ifndef NO_IP
-#define IP_LISTENER_BACKLOG 511 /* So if it gets masked by 256 or some other
- such value it'll still be respectable */
+# define IP_LISTENER_BACKLOG 511/* So if it gets masked by 256 or some other
+ * such value it'll still be respectable */
/* Any IP-related initialisations. For now, this means blocking SIGPIPE */
int ip_initialise(void)
{
- struct sigaction sa;
-
- sa.sa_handler = SIG_IGN;
- sa.sa_flags = 0;
- sigemptyset(&sa.sa_mask);
- if(sigaction(SIGPIPE, &sa, NULL) != 0)
- return 0;
- return 1;
+ struct sigaction sa;
+
+ sa.sa_handler = SIG_IGN;
+ sa.sa_flags = 0;
+ sigemptyset(&sa.sa_mask);
+ if (sigaction(SIGPIPE, &sa, NULL) != 0)
+ return 0;
+ return 1;
}
int ip_create_listener_split(const char *ip, unsigned short port)
{
- struct sockaddr_in in_addr;
- int fd = -1;
- int reuseVal = 1;
-
- /* Create the socket */
- if((fd = socket(PF_INET, SOCK_STREAM, 0)) == -1)
- goto err;
- /* Set the SO_REUSEADDR flag - servers act weird without it */
- if(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)(&reuseVal),
- sizeof(reuseVal)) != 0)
- goto err;
- /* Prepare the listen address stuff */
- in_addr.sin_family = AF_INET;
- memcpy(&in_addr.sin_addr.s_addr, ip, 4);
- in_addr.sin_port = htons(port);
- /* Bind to the required port/address/interface */
- if(bind(fd, (struct sockaddr *)&in_addr, sizeof(struct sockaddr_in)) != 0)
- goto err;
- /* Start "listening" */
- if(listen(fd, IP_LISTENER_BACKLOG) != 0)
- goto err;
- return fd;
-err:
- if(fd != -1)
- close(fd);
- return -1;
+ struct sockaddr_in in_addr;
+ int fd = -1;
+ int reuseVal = 1;
+
+ /* Create the socket */
+ if ((fd = socket(PF_INET, SOCK_STREAM, 0)) == -1)
+ goto err;
+ /* Set the SO_REUSEADDR flag - servers act weird without it */
+ if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)(&reuseVal),
+ sizeof(reuseVal)) != 0)
+ goto err;
+ /* Prepare the listen address stuff */
+ in_addr.sin_family = AF_INET;
+ memcpy(&in_addr.sin_addr.s_addr, ip, 4);
+ in_addr.sin_port = htons(port);
+ /* Bind to the required port/address/interface */
+ if (bind(fd, (struct sockaddr *)&in_addr, sizeof(struct sockaddr_in)) !=
+ 0)
+ goto err;
+ /* Start "listening" */
+ if (listen(fd, IP_LISTENER_BACKLOG) != 0)
+ goto err;
+ return fd;
+ err:
+ if (fd != -1)
+ close(fd);
+ return -1;
}
int ip_create_connection_split(const char *ip, unsigned short port)
{
- struct sockaddr_in in_addr;
- int flags, fd = -1;
-
- /* Create the socket */
- if((fd = socket(PF_INET, SOCK_STREAM, 0)) == -1)
- goto err;
- /* Make it non-blocking */
- if(((flags = fcntl(fd, F_GETFL, 0)) < 0) ||
- (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0))
- goto err;
- /* Prepare the connection address stuff */
- in_addr.sin_family = AF_INET;
- memcpy(&in_addr.sin_addr.s_addr, ip, 4);
- in_addr.sin_port = htons(port);
- /* Start a connect (non-blocking, in all likelihood) */
- if((connect(fd, (struct sockaddr *)&in_addr,
- sizeof(struct sockaddr_in)) != 0) &&
- (errno != EINPROGRESS))
- goto err;
- return fd;
-err:
- if(fd != -1)
- close(fd);
- return -1;
+ struct sockaddr_in in_addr;
+ int flags, fd = -1;
+
+ /* Create the socket */
+ if ((fd = socket(PF_INET, SOCK_STREAM, 0)) == -1)
+ goto err;
+ /* Make it non-blocking */
+ if (((flags = fcntl(fd, F_GETFL, 0)) < 0) ||
+ (fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0))
+ goto err;
+ /* Prepare the connection address stuff */
+ in_addr.sin_family = AF_INET;
+ memcpy(&in_addr.sin_addr.s_addr, ip, 4);
+ in_addr.sin_port = htons(port);
+ /* Start a connect (non-blocking, in all likelihood) */
+ if ((connect(fd, (struct sockaddr *)&in_addr,
+ sizeof(struct sockaddr_in)) != 0) && (errno != EINPROGRESS))
+ goto err;
+ return fd;
+ err:
+ if (fd != -1)
+ close(fd);
+ return -1;
}
-static char all_local_ip[] = {0x00,0x00,0x00,0x00};
+static char all_local_ip[] = { 0x00, 0x00, 0x00, 0x00 };
int ip_parse_address(const char *address, const char **parsed_ip,
- unsigned short *parsed_port, int accept_all_ip)
+ unsigned short *parsed_port, int accept_all_ip)
{
- char buf[256];
- struct hostent *lookup;
- unsigned long port;
- const char *ptr = strstr(address, ":");
- const char *ip = all_local_ip;
-
- if(!ptr) {
- /* We assume we're listening on all local interfaces and have
- * only specified a port. */
- if(!accept_all_ip)
- return 0;
- ptr = address;
- goto determine_port;
- }
- if((ptr - address) > 255)
- return 0;
- memset(buf, 0, 256);
- memcpy(buf, address, ptr - address);
- ptr++;
- if((lookup = gethostbyname(buf)) == NULL) {
- /* Spit a message to differentiate between lookup failures and
- * bad strings. */
- fprintf(stderr, "hostname lookup for '%s' failed\n", buf);
- return 0;
- }
- ip = lookup->h_addr_list[0];
-determine_port:
- if(strlen(ptr) < 1)
- return 0;
- if(!int_strtoul(ptr, &port) || (port > 65535))
- return 0;
- *parsed_ip = ip;
- *parsed_port = (unsigned short)port;
- return 1;
+ char buf[256];
+ struct hostent *lookup;
+ unsigned long port;
+ const char *ptr = strstr(address, ":");
+ const char *ip = all_local_ip;
+
+ if (!ptr) {
+ /*
+ * We assume we're listening on all local interfaces and have only
+ * specified a port.
+ */
+ if (!accept_all_ip)
+ return 0;
+ ptr = address;
+ goto determine_port;
+ }
+ if ((ptr - address) > 255)
+ return 0;
+ memset(buf, 0, 256);
+ memcpy(buf, address, ptr - address);
+ ptr++;
+ if ((lookup = gethostbyname(buf)) == NULL) {
+ /*
+ * Spit a message to differentiate between lookup failures and bad
+ * strings.
+ */
+ fprintf(stderr, "hostname lookup for '%s' failed\n", buf);
+ return 0;
+ }
+ ip = lookup->h_addr_list[0];
+ determine_port:
+ if (strlen(ptr) < 1)
+ return 0;
+ if (!int_strtoul(ptr, &port) || (port > 65535))
+ return 0;
+ *parsed_ip = ip;
+ *parsed_port = (unsigned short)port;
+ return 1;
}
int ip_create_listener(const char *address)
{
- const char *ip;
- unsigned short port;
+ const char *ip;
+ unsigned short port;
- if(!ip_parse_address(address, &ip, &port, 1))
- return -1;
- return ip_create_listener_split(ip, port);
+ if (!ip_parse_address(address, &ip, &port, 1))
+ return -1;
+ return ip_create_listener_split(ip, port);
}
int ip_create_connection(const char *address)
{
- const char *ip;
- unsigned short port;
+ const char *ip;
+ unsigned short port;
- if(!ip_parse_address(address, &ip, &port, 0))
- return -1;
- return ip_create_connection_split(ip, port);
+ if (!ip_parse_address(address, &ip, &port, 0))
+ return -1;
+ return ip_create_connection_split(ip, port);
}
int ip_accept_connection(int listen_fd)
{
- return accept(listen_fd, NULL, NULL);
+ return accept(listen_fd, NULL, NULL);
}
-#endif /* !defined(NO_IP) */
-
+#endif /* !defined(NO_IP) */
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-09 23:56:35 +0000