firstHEADmain

1 files changed, 254 insertions, 0 deletions

diff --git a/src/client/addr.c b/src/client/addr.c
new file mode 100644
index 0000000..82f0e2e
--- /dev/null
+++ b/src/client/addr.c
@@ -0,0 +1,254 @@
+#include <errno.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <poll.h>
+
+#include "addr.h"
+
+void create_ip_addr(uint8_t* domain, IpAddr* addr) {
+    addr->type = V4;
+    memcpy(&addr->data.v4, domain, 4);
+}
+
+void create_ip_addr6(uint8_t* domain, IpAddr* addr) {
+    addr->type = V6;
+    memcpy(&addr->data.v6, domain, 16);
+}
+
+void ip_addr_any(IpAddr* addr) {
+    addr->type = V4;
+    addr->data.v4.s_addr = htonl(INADDR_ANY);
+}
+
+void ip_addr_any6(IpAddr* addr) {
+    addr->type = V6;
+    addr->data.v6 = in6addr_any;
+}
+
+bool ip_addr_name(const char* hostname, IpAddr* addr) {
+
+    struct hostent *he;
+	struct in_addr **addr_list;
+	int i;
+		
+	if ((he = gethostbyname(hostname)) == NULL) {
+		return false;
+	}
+
+	addr_list = (struct in_addr **) he->h_addr_list;
+	
+	for(i = 0; addr_list[i] != NULL; i++) {
+		addr->data.v4 = *addr_list[i];
+        addr->type = V4;
+		return true;
+	}
+
+	return false;
+}
+
+static struct sockaddr_in create_socket_addr_v4(IpAddr addr, uint16_t port) {
+    struct sockaddr_in socketaddr;
+    memset(&socketaddr, 0, sizeof(socketaddr));
+    socketaddr.sin_family = AF_INET;
+    socketaddr.sin_port = htons(port);
+    socketaddr.sin_addr = addr.data.v4;
+    return socketaddr;
+}
+
+static struct sockaddr_in6 create_socket_addr_v6(IpAddr addr, uint16_t port) {
+    struct sockaddr_in6 socketaddr;
+    memset(&socketaddr, 0, sizeof(socketaddr));
+    socketaddr.sin6_family = AF_INET6;
+    socketaddr.sin6_port = htons(port);
+    socketaddr.sin6_addr = addr.data.v6;
+    return socketaddr;
+}
+
+static size_t get_addr_len(AddrType type) {
+    if (type == V4) {
+        return sizeof(struct sockaddr_in);
+    } else if (type == V6) {
+        return sizeof(struct sockaddr_in6);
+    } else {
+        return 0;
+    }
+}
+
+void create_socket_addr(uint16_t port, IpAddr addr, SocketAddr* socket) {
+    socket->type = addr.type;
+    if (addr.type == V4) {
+        socket->data.v4 = create_socket_addr_v4(addr, port);
+    } else if(addr.type == V6) {
+        socket->data.v6 = create_socket_addr_v6(addr, port);
+    } else {
+        exit(EXIT_FAILURE);
+    }
+    socket->len = get_addr_len(addr.type);
+}
+
+#define ADDR_DOMAIN(addr, var) \
+    struct sockaddr* var; \
+    if (addr->type == V4) { \
+        var = (struct sockaddr*) &addr->data.v4; \
+    } else if (addr->type == V6) { \
+        var = (struct sockaddr*) &addr->data.v6; \
+    } else { \
+        return -1; \
+    }
+
+#define ADDR_AFNET(type, var) \
+    int var; \
+    if (type == V4) { \
+        var = AF_INET; \
+    } else if (type == V6) { \
+        var = AF_INET6; \
+    } else { \
+        return -1; \
+    }
+
+int32_t create_udp_socket(AddrType type, UdpSocket* sock) {
+    ADDR_AFNET(type, __domain)
+    sock->type = type;
+    sock->sockfd = socket(__domain, SOCK_DGRAM, 0);
+    return sock->sockfd;
+}
+
+int32_t bind_udp_socket(SocketAddr* addr, UdpSocket* sock) {
+    if (addr->type == V6) {
+        int v6OnlyEnabled = 0;
+        int32_t res = setsockopt(
+            sock->sockfd, 
+            IPPROTO_IPV6, 
+            IPV6_V6ONLY, 
+            &v6OnlyEnabled, 
+            sizeof(v6OnlyEnabled)
+        );
+        if (res < 0) return res;
+    }
+    ADDR_DOMAIN(addr, __addr)
+    return bind(sock->sockfd, __addr, addr->len);
+}
+
+static bool timeout (int connfd, int ms) {
+    struct pollfd fd;
+    int res;
+
+    fd.fd = connfd;
+    fd.events = POLLIN;
+    res = poll(&fd, 1, ms);
+    return res == 0;
+}
+
+int32_t read_udp_socket(UdpSocket* socket, void* buffer, uint16_t len, SocketAddr* clientaddr) {
+    clientaddr->type = socket->type;
+    clientaddr->len = get_addr_len(socket->type); 
+    ADDR_DOMAIN(clientaddr, __addr)
+    if (timeout(socket->sockfd, 1000)) {
+        errno = ETIMEDOUT;
+        return -1;
+    }
+    return recvfrom(
+        socket->sockfd, 
+        buffer, 
+        (size_t) len,
+        MSG_WAITALL, 
+        __addr,
+        (uint32_t*) &clientaddr->len
+    );
+}
+
+int32_t write_udp_socket(UdpSocket* socket, void* buffer, uint16_t len, SocketAddr* clientaddr) {
+    ADDR_DOMAIN(clientaddr, __addr)
+    return sendto(
+        socket->sockfd, 
+        buffer,
+        (size_t) len,
+		MSG_CONFIRM,
+        __addr, 
+        (uint32_t) clientaddr->len
+    );
+}
+
+int32_t close_udp_socket(UdpSocket* socket) {
+    return close(socket->sockfd);
+}
+
+int32_t create_tcp_socket(AddrType type, TcpSocket* sock) {
+    ADDR_AFNET(type, __domain)
+    sock->type = type;
+    sock->sockfd = socket(__domain, SOCK_STREAM, 0);
+    return sock->sockfd;
+}
+
+int32_t bind_tcp_socket(SocketAddr* addr, TcpSocket* sock) {
+    if (addr->type == V6) {
+        int v6OnlyEnabled = 0;
+        int32_t res = setsockopt(
+            sock->sockfd, 
+            IPPROTO_IPV6, 
+            IPV6_V6ONLY, 
+            &v6OnlyEnabled, 
+            sizeof(v6OnlyEnabled)
+        );
+        if (res < 0) return res;
+    }
+    ADDR_DOMAIN(addr, __addr)
+    return bind(sock->sockfd, __addr, addr->len);
+}
+
+int32_t listen_tcp_socket(TcpSocket* socket, uint32_t max) {
+    return listen(socket->sockfd, max);
+}
+
+int32_t accept_tcp_socket(TcpSocket* socket, TcpStream* stream) {
+    stream->clientaddr.type = socket->type;
+    memset(&stream->clientaddr, 0, sizeof(SocketAddr));
+    SocketAddr* addr = &stream->clientaddr;
+    ADDR_DOMAIN(addr, __addr)
+    stream->streamfd = accept(
+        socket->sockfd,
+        __addr,
+        (uint32_t*) &stream->clientaddr.len
+    );
+    return stream->streamfd;
+}
+
+int32_t close_tcp_socket(TcpSocket* socket) {
+    return close(socket->sockfd);
+}
+
+int32_t connect_tcp_stream(SocketAddr* servaddr, TcpStream* stream) {
+    TcpSocket socket;    
+    int32_t res = create_tcp_socket(servaddr->type, &socket);
+    if (res < 0) return res;
+    stream->clientaddr = *servaddr;
+    stream->streamfd = socket.sockfd;
+    ADDR_DOMAIN(servaddr, __addr)
+    return connect(
+        socket.sockfd, 
+        __addr, 
+        servaddr->len
+    );
+}
+
+int32_t read_tcp_stream(TcpStream* stream, void* buffer, uint16_t len) {
+    if (timeout(stream->streamfd, 3000)) {
+        errno = ETIMEDOUT;
+        return -1;
+    }
+    return recv(stream->streamfd, buffer, len, MSG_WAITALL);
+}
+
+int32_t write_tcp_stream(TcpStream* stream, void* buffer, uint16_t len) {
+    return send(stream->streamfd, buffer, len, MSG_NOSIGNAL);
+}
+
+int32_t close_tcp_stream(TcpStream* stream) {
+    return close(stream->streamfd);
+}