mirror of https://github.com/wolfSSL/wolfssh.git
copy example server as echoserver
John Safranek
parent
f9fa42e244
commit
e21e6fd0eb
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@ -47,6 +47,7 @@ diff
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.vimrc
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# examples
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examples/echoserver/echoserver
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examples/server/server
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# test output
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@ -30,6 +30,7 @@ ACLOCAL_AMFLAGS= -I m4
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include src/include.am
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include wolfssh/include.am
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include examples/echoserver/include.am
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include examples/server/include.am
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@ -0,0 +1,387 @@
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/* echoserver.c
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*
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* Copyright (C) 2014 wolfSSL Inc.
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*
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* This file is part of wolfSSH.
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*
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* wolfSSH is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSH is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <ctype.h>
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#include <string.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <arpa/inet.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <stdio.h>
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#include <pthread.h>
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#include <wolfssh/ssh.h>
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#ifndef SO_NOSIGPIPE
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#include <signal.h>
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#endif
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typedef int SOCKET_T;
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#ifdef TEST_IPV6
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typedef struct sockaddr_in6 SOCKADDR_IN_T;
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#define AF_INET_V AF_INET6
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static const char* wolfsshIP = "::1";
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#else
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typedef struct sockaddr_in SOCKADDR_IN_T;
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#define AF_INET_V AF_INET
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static const char* wolfsshIP = "127.0.0.1";
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#endif
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#define SERVER_PORT_NUMBER 22222
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#define SCRATCH_BUFFER_SIZE 1200
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#if defined(__MACH__) || defined(USE_WINDOWS_API)
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#ifndef _SOCKLEN_T
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typedef int socklen_t;
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#endif
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#endif
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/* HPUX doesn't use socklent_t for third parameter to accept, unless
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_XOPEN_SOURCE_EXTENDED is defined */
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#if !defined(__hpux__) && !defined(CYASSL_MDK_ARM) && !defined(CYASSL_IAR_ARM)
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typedef socklen_t SOCKLEN_T;
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#else
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#if defined _XOPEN_SOURCE_EXTENDED
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typedef socklen_t SOCKLEN_T;
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#else
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typedef int SOCKLEN_T;
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#endif
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#endif
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#if defined(_POSIX_THREADS) && !defined(__MINGW32__)
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typedef void* THREAD_RETURN;
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typedef pthread_t THREAD_TYPE;
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#define CYASSL_THREAD
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#define INFINITE -1
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#define WAIT_OBJECT_0 0L
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#elif defined(CYASSL_MDK_ARM)
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typedef unsigned int THREAD_RETURN;
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typedef int THREAD_TYPE;
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#define CYASSL_THREAD
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#else
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typedef unsigned int THREAD_RETURN;
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typedef intptr_t THREAD_TYPE;
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#define CYASSL_THREAD __stdcall
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#endif
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typedef struct {
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SOCKET_T clientFd;
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} thread_ctx_t;
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static WINLINE void err_sys(const char* msg)
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{
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printf("server error: %s\n", msg);
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if (msg)
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exit(EXIT_FAILURE);
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}
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static WINLINE void build_addr(SOCKADDR_IN_T* addr, const char* peer,
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uint16_t port)
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{
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int useLookup = 0;
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(void)useLookup;
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memset(addr, 0, sizeof(SOCKADDR_IN_T));
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#ifndef TEST_IPV6
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/* peer could be in human readable form */
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if ( (peer != INADDR_ANY) && isalpha((int)peer[0])) {
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#ifdef CYASSL_MDK_ARM
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int err;
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struct hostent* entry = gethostbyname(peer, &err);
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#else
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struct hostent* entry = gethostbyname(peer);
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#endif
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if (entry) {
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memcpy(&addr->sin_addr.s_addr, entry->h_addr_list[0],
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entry->h_length);
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useLookup = 1;
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}
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else
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err_sys("no entry for host");
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}
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#endif
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#ifndef TEST_IPV6
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#if defined(CYASSL_MDK_ARM)
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addr->sin_family = PF_INET;
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#else
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addr->sin_family = AF_INET_V;
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#endif
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addr->sin_port = htons(port);
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if (peer == INADDR_ANY)
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addr->sin_addr.s_addr = INADDR_ANY;
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else {
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if (!useLookup)
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addr->sin_addr.s_addr = inet_addr(peer);
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}
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#else
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addr->sin6_family = AF_INET_V;
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addr->sin6_port = htons(port);
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if (peer == INADDR_ANY)
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addr->sin6_addr = in6addr_any;
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else {
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#ifdef HAVE_GETADDRINFO
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struct addrinfo hints;
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struct addrinfo* answer = NULL;
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int ret;
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char strPort[80];
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = AF_INET_V;
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hints.ai_socktype = udp ? SOCK_DGRAM : SOCK_STREAM;
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hints.ai_protocol = udp ? IPPROTO_UDP : IPPROTO_TCP;
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SNPRINTF(strPort, sizeof(strPort), "%d", port);
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strPort[79] = '\0';
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ret = getaddrinfo(peer, strPort, &hints, &answer);
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if (ret < 0 || answer == NULL)
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err_sys("getaddrinfo failed");
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memcpy(addr, answer->ai_addr, answer->ai_addrlen);
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freeaddrinfo(answer);
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#else
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printf("no ipv6 getaddrinfo, loopback only tests/examples\n");
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addr->sin6_addr = in6addr_loopback;
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#endif
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}
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#endif
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}
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static WINLINE void tcp_socket(SOCKET_T* sockFd)
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{
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*sockFd = socket(AF_INET_V, SOCK_STREAM, 0);
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#ifdef USE_WINDOWS_API
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if (*sockFd == INVALID_SOCKET)
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err_sys("socket failed\n");
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#else
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if (*sockFd < 0)
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err_sys("socket failed\n");
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#endif
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#ifndef USE_WINDOWS_API
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#ifdef SO_NOSIGPIPE
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{
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int on = 1;
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socklen_t len = sizeof(on);
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int res = setsockopt(*sockFd, SOL_SOCKET, SO_NOSIGPIPE, &on, len);
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if (res < 0)
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err_sys("setsockopt SO_NOSIGPIPE failed\n");
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}
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#elif defined(CYASSL_MDK_ARM)
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/* nothing to define */
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#else /* no S_NOSIGPIPE */
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signal(SIGPIPE, SIG_IGN);
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#endif /* S_NOSIGPIPE */
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#if defined(TCP_NODELAY)
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{
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int on = 1;
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socklen_t len = sizeof(on);
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int res = setsockopt(*sockFd, IPPROTO_TCP, TCP_NODELAY, &on, len);
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if (res < 0)
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err_sys("setsockopt TCP_NODELAY failed\n");
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}
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#endif
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#endif /* USE_WINDOWS_API */
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}
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static WINLINE void tcp_bind(SOCKET_T* sockFd, uint16_t port, int useAnyAddr)
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{
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SOCKADDR_IN_T addr;
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/* don't use INADDR_ANY by default, firewall may block, make user switch
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on */
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build_addr(&addr, (useAnyAddr ? INADDR_ANY : wolfsshIP), port);
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tcp_socket(sockFd);
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#if !defined(USE_WINDOWS_API) && !defined(CYASSL_MDK_ARM)
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{
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int res, on = 1;
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socklen_t len = sizeof(on);
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res = setsockopt(*sockFd, SOL_SOCKET, SO_REUSEADDR, &on, len);
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if (res < 0)
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err_sys("setsockopt SO_REUSEADDR failed\n");
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}
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#endif
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if (bind(*sockFd, (const struct sockaddr*)&addr, sizeof(addr)) != 0)
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err_sys("tcp bind failed");
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}
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static THREAD_RETURN CYASSL_THREAD server_worker(void* vArgs)
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{
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WOLFSSH* ssh = (WOLFSSH*)vArgs;
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SOCKET_T clientFd = wolfSSH_get_fd(ssh);
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const char* msgA = "Who's there?!\r\n";
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const char* msgB = "Go away!\r\n";
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char rxBuf[4096];
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int rxBufSz;
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if (wolfSSH_accept(ssh) == WS_SUCCESS) {
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wolfSSH_stream_send(ssh, (uint8_t*)msgA, (uint32_t)strlen(msgA));
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rxBufSz = wolfSSH_stream_read(ssh, (uint8_t*)rxBuf, sizeof(rxBuf));
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if (rxBufSz > 0) {
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rxBuf[rxBufSz] = 0;
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printf("client sent %d bytes\n%s", rxBufSz, rxBuf);
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}
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else
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printf("wolfSSH_stream_read returned %d\n", rxBufSz);
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wolfSSH_stream_send(ssh, (uint8_t*)msgB, (uint32_t)strlen(msgB));
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}
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close(clientFd);
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wolfSSH_free(ssh);
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return 0;
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}
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static int load_file(const char* fileName, uint8_t* buf, uint32_t bufSz)
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{
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FILE* file;
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uint32_t fileSz;
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uint32_t readSz;
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if (fileName == NULL) return 0;
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file = fopen(fileName, "rb");
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if (file == NULL) return 0;
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fseek(file, 0, SEEK_END);
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fileSz = (uint32_t)ftell(file);
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rewind(file);
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if (fileSz > bufSz) {
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fclose(file);
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return 0;
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}
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readSz = (uint32_t)fread(buf, 1, fileSz, file);
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if (readSz < fileSz) {
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fclose(file);
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return 0;
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}
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return fileSz;
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}
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int main(void)
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{
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WOLFSSH_CTX* ctx = NULL;
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SOCKET_T listenFd = 0;
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#ifdef DEBUG_WOLFSSH
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wolfSSH_Debugging_ON();
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#endif
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if (wolfSSH_Init() != WS_SUCCESS) {
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fprintf(stderr, "Couldn't initialize wolfSSH.\n");
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exit(EXIT_FAILURE);
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}
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ctx = wolfSSH_CTX_new(WOLFSSH_ENDPOINT_SERVER, NULL);
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if (ctx == NULL) {
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fprintf(stderr, "Couldn't allocate SSH CTX data.\n");
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exit(EXIT_FAILURE);
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}
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{
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uint8_t buf[SCRATCH_BUFFER_SIZE];
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uint32_t bufSz;
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bufSz = load_file("./certs/server-cert.der", buf, SCRATCH_BUFFER_SIZE);
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if (bufSz == 0) {
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fprintf(stderr, "Couldn't load certificate file.\n");
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exit(EXIT_FAILURE);
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}
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if (wolfSSH_CTX_UseCert_buffer(ctx,
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buf, bufSz, WOLFSSH_FORMAT_ASN1) < 0) {
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fprintf(stderr, "Couldn't use certificate buffer.\n");
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exit(EXIT_FAILURE);
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}
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bufSz = load_file("./certs/server-key.der", buf, SCRATCH_BUFFER_SIZE);
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if (bufSz == 0) {
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fprintf(stderr, "Couldn't load key file.\n");
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exit(EXIT_FAILURE);
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}
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if (wolfSSH_CTX_UsePrivateKey_buffer(ctx,
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buf, bufSz, WOLFSSH_FORMAT_ASN1) < 0) {
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fprintf(stderr, "Couldn't use key buffer.\n");
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exit(EXIT_FAILURE);
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}
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}
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tcp_bind(&listenFd, SERVER_PORT_NUMBER, 0);
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for (;;) {
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SOCKET_T clientFd = 0;
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SOCKADDR_IN_T clientAddr;
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SOCKLEN_T clientAddrSz = sizeof(clientAddr);
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THREAD_TYPE thread;
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WOLFSSH* ssh;
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ssh = wolfSSH_new(ctx);
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if (ssh == NULL) {
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fprintf(stderr, "Couldn't allocate SSH data.\n");
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exit(EXIT_FAILURE);
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}
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if (listen(listenFd, 5) != 0)
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err_sys("tcp listen failed");
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clientFd = accept(listenFd, (struct sockaddr*)&clientAddr,
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&clientAddrSz);
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if (clientFd == -1)
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err_sys("tcp accept failed");
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wolfSSH_set_fd(ssh, clientFd);
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pthread_create(&thread, 0, server_worker, ssh);
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pthread_detach(thread);
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}
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if (wolfSSH_Cleanup() != WS_SUCCESS) {
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fprintf(stderr, "Couldn't clean up wolfSSH.\n");
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exit(EXIT_FAILURE);
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}
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return 0;
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}
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@ -0,0 +1,10 @@
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# vim:ft=automake
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# All paths should be given relative to the root
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noinst_PROGRAMS += examples/echoserver/echoserver
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examples_echoserver_echoserver_SOURCES = examples/echoserver/echoserver.c
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examples_echoserver_echoserver_LDADD = src/libwolfssh.la
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examples_echoserver_echoserver_DEPENDENCIES = src/libwolfssh.la
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dist_example_DATA+= examples/echoserver/echoserver.c
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DISTCLEANFILES+= examples/echoserver/.libs/echoserver
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