Remove old ssl implementation and deprecated function ssl:peercert/1

1 files changed, 0 insertions, 1904 deletions

diff --git a/lib/ssl/c_src/esock.c b/lib/ssl/c_src/esock.c
deleted file mode 100644
index 78d08f7c29..0000000000
--- a/lib/ssl/c_src/esock.c
+++ /dev/null
@@ -1,1904 +0,0 @@
-/*<copyright>
- * <year>1999-2008</year>
- * <holder>Ericsson AB, All Rights Reserved</holder>
- *</copyright>
- *<legalnotice>
- * The contents of this file are subject to the Erlang Public License,
- * Version 1.1, (the "License"); you may not use this file except in
- * compliance with the License. You should have received a copy of the
- * Erlang Public License along with this software. If not, it can be
- * retrieved online at http://www.erlang.org/.
- *
- * Software distributed under the License is distributed on an "AS IS"
- * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
- * the License for the specific language governing rights and limitations
- * under the License.
- *
- * The Initial Developer of the Original Code is Ericsson AB.
- *</legalnotice>
- */
-
-/*
- * Purpose:  Implementation of Secure Socket Layer (SSL).
- *
- * This is an "SSL proxy" for Erlang in the form of a port
- * program. 
- *
- * The implementation has borrowed somewhat from the original
- * implementation of `socket' by Claes Wikstr�m, and the former
- * implementation of `ssl_socket' by Helen Ariyan.
- *
- * All I/O is now non-blocking. 
- *
- * When a connection (cp) is in the state JOINED we have the following
- * picture:
- *
- *            proxy->fd                          fd
- *               |                               |
- *  proxy->eof   |  -------->  wq  ----------->  |   bp 
- *               |                               |
- *  Erlang       |                               |   SSL
- *               |                               |
- *  proxy->bp    |  <------ proxy->wq ---------  |   eof
- *               |                               |
- * 
- * We read from Erlang (proxy->fd) and write to SSL (fd); and read from 
- * SSL (fd) and write to Erlang (proxy->fd).  
- *
- * The variables bp (broken pipe) and eof (end of file) take the
- * values 0 and 1.
- *
- * What has been read and cannot be immediately written is put in a
- * write queue (wq). A wq is emptied before reads are continued, which
- * means that at most one chunk that is read can be in a wq.
- *
- * The proxy-to-ssl part of a cp is valid iff 
- *
- *         !bp && (wq.len > 0 || !proxy->eof).
- *
- * The ssl-to-proxy part of a cp is valid iff 
- *
- *         !proxy->bp && (proxy->wq.len > 0 || !eof). 
- *
- * The connection is valid if any of the above parts are valid, i.e.
- * invalid if both parts are invalid.
- *
- * Every SELECT_TIMEOUT second we try to write to those file
- * descriptors that have non-empty wq's (the only way to detect that a
- * far end has gone away is to write to it).
- *
- * STATE TRANSITIONS
- *
- * Below (*) means that the corresponding file descriptor is published
- * (i.e. kwown outside this port program) when the state is entered,
- * and thus cannot be closed without synchronization with the
- * ssl_server.
- *
- * Listen:
- *
- * STATE_NONE ---> (*) PASSIVE_LISTENING <---> ACTIVE_LISTENING
- *
- * Accept:
- *
- * STATE_NONE ---> SSL_ACCEPT ---> (*) CONNECTED ---> JOINED ---> 
- *  ---> SSL_SHUTDOWN ---> DEFUNCT
- *
- * Connect:
- *
- * STATE_NONE ---> (*) WAIT_CONNECT ---> SSL_CONNECT ---> CONNECTED ---> 
- *  ---> JOINED ---> SSL_SHUTDOWN ---> DEFUNCT
- * 
- * In states where file descriptors has been published, and where
- * something goes wrong, the state of the connection is set to
- * DEFUNCT. A connection in such a state can only be closed by a CLOSE
- * message from Erlang (a reception of such a message is registered in
- * cp->closed). The possible states are: WAIT_CONNECT, SSL_CONNECT,
- * CONNECTED, JOINED, and SSL_SHUTDOWN.
- *
- * A connection in state SSL_ACCEPT can be closed and removed without
- * synchronization.
- *
- */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#ifdef __WIN32__
-#include "esock_winsock.h"
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <time.h>
-#include <ctype.h>
-#include <sys/types.h>
-#include <errno.h>
-
-#ifdef __WIN32__
-#include <process.h>
-#else
-#include <unistd.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <sys/time.h>
-#include <netdb.h>
-#include <arpa/inet.h>
-#include <fcntl.h>
-#endif
-
-#ifndef INADDR_NONE
-#define INADDR_NONE 0xffffffff  /* Should be in <netinet/in.h>.  */
-#endif
-
-#include "esock.h"
-#include "debuglog.h"
-#include "esock_utils.h"
-#include "esock_ssl.h"
-#include "esock_osio.h"
-#include "esock_posix_str.h"
-#include "esock_poll.h"
-
-#define MAJOR_VERSION   2
-#define MINOR_VERSION   0
-#define MAXREPLYBUF	256
-#define RWBUFLEN	(32*1024)
-#define IS_CLIENT       0
-#define IS_SERVER       1
-#define SELECT_TIMEOUT  2	/* seconds */
-
-#define psx_errstr()	esock_posix_str(sock_errno())
-#define ssl_errstr()	esock_ssl_errstr
-
-#define PROXY_TO_SSL_VALID(cp) (!(cp)->bp && \
-				((cp)->wq.len > 0 || !(cp)->proxy->eof))
-
-#define SSL_TO_PROXY_VALID(cp) (!(cp)->proxy->bp && \
-				((cp)->proxy->wq.len > 0 || !(cp)->eof))
-
-#define JOINED_STATE_INVALID(cp) (!(PROXY_TO_SSL_VALID(cp)) && \
-				!(SSL_TO_PROXY_VALID(cp)))
-static int loop(void);
-static int set_poll_conns(Connection *cp, EsockPoll *ep, int verbose);
-static Connection *next_polled_conn(Connection *cp, Connection **cpnext,
-				    EsockPoll *ep, int set_wq_fds);
-
-static void leave_joined_state(Connection *cp);
-static void do_shutdown(Connection *cp);
-static void close_and_remove_connection(Connection *cp);
-static int reply(int cmd, char *fmt, ...);
-static int input(char *fmt, ...);
-static int put_pars(unsigned char *buf, char *fmt, va_list args);
-static int get_pars(unsigned char *buf, char *fmt, va_list args);
-static FD do_connect(char *lipstring, int lport, char *fipstring, int fport);
-static FD do_listen(char *ipstring, int lport, int backlog, int *aport);
-static FD do_accept(FD listensock, struct sockaddr *saddr, int *len);
-static void print_connections(void);
-static void dump_connections(void);
-static int check_num_sock_fds(FD fd); 
-static void safe_close(FD fd);
-static Connection *new_connection(int state, FD fd);
-static Connection *get_connection(FD fd);
-static void remove_connection(Connection *conn);
-static Proxy *get_proxy_by_peerport(int port);
-static Proxy *new_proxy(FD fd);
-static void remove_proxy(Proxy *proxy);
-static void ensure_write_queue(WriteQueue *wq, int size);
-static void clean_up(void);
-
-static Connection  *connections = NULL;
-static int num_sock_fds;	/* On UNIX all file descriptors */
-static Proxy *proxies = NULL;
-static int proxy_listensock = INVALID_FD;
-static int proxy_listenport = 0;
-static int proxy_backlog = 128;
-static int proxysock_last_err = 0;
-static int proxysock_err_cnt = 0;
-static char rwbuf[RWBUFLEN];
-static unsigned char *ebuf = NULL; /* Set by read_ctrl() */
-
-static char *connstr[] = {
-    "STATE_NONE", 
-    "ACTIVE_LISTENING",
-    "PASSIVE_LISTENING",
-    "CONNECTED",
-    "WAIT_CONNECT",
-    "SSL_CONNECT",
-    "SSL_ACCEPT",
-    "TRANSPORT_ACCEPT",
-    "JOINED",
-    "SSL_SHUTDOWN",
-    "DEFUNCT"
-};
-
-static char *originstr[] = {
-    "listen",
-    "accept",
-    "connect"
-};
-
-int main(int argc, char **argv) 
-{
-    char *logfile = NULL;
-    int i;
-    esock_version *vsn;
-    char *ciphers; 
-#ifdef __WIN32__
-    int pid;
-    WORD version;
-    WSADATA wsa_data;
-
-    set_binary_mode();
-    setvbuf(stderr, NULL, _IONBF, 0);
-    /* Two sockets for the stdin socket pipe (local thread). */
-    num_sock_fds = 2;		
-#else
-    pid_t pid;
-    num_sock_fds = 3;		/* 0, 1, 2 */
-#endif
-
-    pid = getpid();
-    i = 1;
-    while (i < argc) {
-	if (strcmp(argv[i], "-d") == 0) {
-	    debug = 1;
-	    i++;
-	} else if (strcmp(argv[i], "-dm") == 0) {
-	    debugmsg = 1;
-	    i++;
-	} else if (strcmp(argv[i], "-pp") == 0) {
-	    i++;
-	    proxy_listenport = atoi(argv[i]);
-	    i++;
-	} else if (strcmp(argv[i], "-pb") == 0) {
-	    i++;
-	    proxy_backlog = atoi(argv[i]);
-	    i++;
-	} else if (strcmp(argv[i], "-pv") == 0) {
-	    i++;
-	    protocol_version = atoi(argv[i]);
-	    i++;
-	} else if (strcmp(argv[i], "-dd") == 0) {
-	    i++;
-	    logfile = esock_malloc(strlen(argv[i]) + 64);
-	    sprintf(logfile, "%s/ssl_esock.%d.log", argv[i], (int)pid);
-	    i++;
-	} else if (strcmp(argv[i], "-ersa") == 0) {
-	    ephemeral_rsa = 1;
-	    i++;
-	} else if (strcmp(argv[i], "-edh") == 0) {
-	    ephemeral_dh = 1;
-	    i++;
-	}
-    }
-    if (debug || debugmsg) {
-	DEBUGF(("Starting ssl_esock\n"));
-	if (logfile) {
-	    open_ssllog(logfile);
-#ifndef __WIN32__
-	    num_sock_fds++;
-#endif
-	}
-	atexit(close_ssllog);
-	DEBUGF(("pid = %d\n", getpid()));
-    }
-    if (esock_ssl_init() < 0) {
-	fprintf(stderr, "esock: Could not do esock_ssl_init\n");
-	exit(EXIT_FAILURE);
-    }
-
-    atexit(esock_ssl_finish);
-
-#ifdef __WIN32__
-    /* Start Windows' sockets */
-    version = MAKEWORD(MAJOR_VERSION, MINOR_VERSION);
-    if (WSAStartup(version, &wsa_data) != 0) {
-	fprintf(stderr, "esock: Could not start up Windows' sockets\n");
-	exit(EXIT_FAILURE);
-    }
-    atexit((void (*)(void))WSACleanup);
-    if (LOBYTE(wsa_data.wVersion) < MAJOR_VERSION ||
-	(LOBYTE(wsa_data.wVersion) == MAJOR_VERSION && 
-	 HIBYTE(wsa_data.wVersion) < MINOR_VERSION)) {
-	fprintf(stderr, "esock: Windows socket version error. "
-		"Requested version:"
-		"%d.%d, version found: %d.%d\n", MAJOR_VERSION, 
-		MINOR_VERSION, LOBYTE(wsa_data.wVersion), 
-		HIBYTE(wsa_data.wVersion));
-	exit(EXIT_FAILURE);
-    }
-    DEBUGF(("Using Windows socket version: %d.%d\n", 
-	   LOBYTE(wsa_data.wVersion), HIBYTE(wsa_data.wVersion)));
-    DEBUGF(("Maximum number of sockets available: %d\n", 
-	    wsa_data.iMaxSockets));
- 
-    if (esock_osio_init() < 0) {
-	fprintf(stderr, "esock: Could not init osio\n");
-	exit(EXIT_FAILURE);
-    }
-    atexit(esock_osio_finish);
-#endif
-
-    /* Create the local proxy listen socket and set it to non-blocking */
-    proxy_listensock = do_listen("127.0.0.1", proxy_listenport, 
-				 proxy_backlog, &proxy_listenport);
-    if (proxy_listensock == INVALID_FD) {
-	fprintf(stderr, "esock: Cannot create local listen socket\n");
-	exit(EXIT_FAILURE);
-    }
-    SET_NONBLOCKING(proxy_listensock);
-    DEBUGF(("Local proxy listen socket: fd = %d, port = %d\n", 
-	   proxy_listensock, proxy_listenport));
-
-    vsn = esock_ssl_version();
-    ciphers = esock_ssl_ciphers();
-
-    /* Report: port number of the local proxy listen socket, the native
-     * os pid, the compile and lib versions of the ssl library, and 
-     * the list of available ciphers. */
-    reply(ESOCK_PROXY_PORT_REP, "24sss", proxy_listenport, (int)pid, 
-	  vsn->compile_version, vsn->lib_version, ciphers);
-
-    atexit(clean_up);
-
-    loop();
-
-    if (logfile) 
-	esock_free(logfile);
-    exit(EXIT_SUCCESS);
-}
-
-
-/*
- * Local functions
- *
- */
-
-static int loop(void)
-{
-    EsockPoll pollfd;
-    FD fd, msgsock, listensock, connectsock, proxysock;
-    int cc, wc, fport, lport, pport, length, backlog, intref, op;
-    int value;
-    char *lipstring, *fipstring;
-    char *flags;
-    char *protocol_vsn, *cipher;
-    unsigned char *cert, *bin;
-    int certlen, binlen;
-    struct sockaddr_in iserv_addr;
-    int sret = 1;
-    Connection *cp, *cpnext, *newcp;
-    Proxy *pp;
-    time_t last_time = 0, now = 0;
-    int set_wq_fds;
-
-    esock_poll_init(&pollfd);
-
-    while(1) {
-	esock_poll_zero(&pollfd);
-	esock_poll_fd_set_read(&pollfd, proxy_listensock);
-	esock_poll_fd_set_read(&pollfd, local_read_fd);
-
-	set_wq_fds = 0;
-
-	if (sret)		/* sret == 1 the first time. */
-	    DEBUGF(("==========LOOP=============\n"));
-
-	cc = set_poll_conns(connections, &pollfd, sret) + 1;
-
-	if (sret) {
-	    print_connections();
-	    DEBUGF(("Before poll/select: %d descriptor%s (total %d)\n",
-		    cc, (cc == 1) ? "" : "s", num_sock_fds));
-	}
-
-	sret = esock_poll(&pollfd, SELECT_TIMEOUT);
-	if (sret < 0) {
-	    DEBUGF(("select/poll error: %s\n", psx_errstr()));
-	    continue;
-	}
-	
-	time(&now);
-	if (now >= last_time + SELECT_TIMEOUT) {
-	    set_wq_fds = 1;
-	    last_time = now;
-	}
-	/*
-	 * First accept as many connections as possible on the
-	 * proxy listen socket. We record the peer port, which
-	 * is later used as a reference for joining a proxy 
-	 * connection with a network connection.
-	 */
-
-	if (esock_poll_fd_isset_read(&pollfd, proxy_listensock)) {
-	    while (1) {
-		length = sizeof(iserv_addr);
-		proxysock = do_accept(proxy_listensock, 
-				      (struct sockaddr *)&iserv_addr, 
-				      (int*)&length);
-		if(proxysock == INVALID_FD) {
-		    if (sock_errno() != ERRNO_BLOCK) {
-			/* We can here for example get the error
-			 * EMFILE, i.e. no more file descriptors
-			 * available, but we do not have any specific
-			 * connection to report the error to.  We
-			 * increment the error counter and saves the
-			 * last err.  
-			 */
-			proxysock_err_cnt++;
-			proxysock_last_err = sock_errno();
-			DEBUGF(("accept error (proxy_listensock): %s\n", 
-				psx_errstr()));
-		    }
-		    break;
-		} else {
-		    /* Get peer port number */
-/* 		    length = sizeof(iserv_addr); */
-/* 		    if (getpeername(proxysock, (struct sockaddr *)&iserv_addr,  */
-/* 				    &length) < 0) { */
-/* 			DEBUGF(("Can't get peername of proxy socket")); */
-/* 			safe_close(proxysock); */
-/* 		    } else { */
-			/* Add to pending proxy connections */
-			SET_NONBLOCKING(proxysock);
-			pp = new_proxy(proxysock);
-			pp->peer_port = ntohs(iserv_addr.sin_port);
-			DEBUGF(("-----------------------------------\n"));
-			DEBUGF(("[PROXY_LISTEN_SOCK] conn accepted: "
-				"proxyfd = %d, "
-			       "peer port = %d\n", proxysock, pp->peer_port));
-/* 		    } */
-		}
-	    }
-	}
-
-	/* 
-	 * Read control messages from Erlang
-	 */
-	if (esock_poll_fd_isset_read(&pollfd, local_read_fd)) {  
-	    cc = read_ctrl(&ebuf);
-	    if ( cc < 0 ) {
-		DEBUGF(("Read loop -1 or 0\n"));
-		return -1;
-	    } else if (cc == 0) {  /* not eof  */
-		DEBUGF(("GOT empty string \n"));
-
-	    } else {
-
-		switch((int)*ebuf) {
-
-		case ESOCK_SET_SEED_CMD:
-		    /* 
-		     * ebuf = {cmd(1), binary(N) }
-		     */
-		    input("b", &binlen, &bin);
-		    DEBUGF(("[SET_SEED_CMD]\n"));
-		    esock_ssl_seed(bin, binlen);
-		    /* no reply */
-		    break;
-
-		case ESOCK_GETPEERNAME_CMD:
-		    /* 
-		     * ebuf = {cmd(1), fd(4)}
-		     */
-		    input("4", &fd);
-		    DEBUGF(("[GETPEERNAME_CMD] fd = %d\n", fd)); 
-		    cp = get_connection(fd);
-		    length = sizeof(iserv_addr);
-		    if (!cp) {
-			sock_set_errno(ERRNO_NOTSOCK);
-			reply(ESOCK_GETPEERNAME_ERR, "4s", fd, psx_errstr());
-		    } else if (getpeername(fd, 
-					   (struct sockaddr *) &iserv_addr, 
-					   &length) < 0) {
-			reply(ESOCK_GETPEERNAME_ERR, "4s", fd, psx_errstr());
-		    } else {
-			/*
-			 * reply  = {cmd(1), fd(4), port(2), 
-			 * 	    ipstring(N), 0(1)}
-			 */
-			reply(ESOCK_GETPEERNAME_REP, "42s", fd, 
-			      ntohs(iserv_addr.sin_port), 
-			      inet_ntoa(iserv_addr.sin_addr));
-		    }
-		    break;
-
-		case ESOCK_GETSOCKNAME_CMD:
-		    /* 
-		     * ebuf = {cmd(1), fd(4)}
-		     */
-		    input("4", &fd);
-		    DEBUGF(("[GETSOCKNAME_CMD] fd = %d\n", fd)); 
-		    cp = get_connection(fd);
-		    length = sizeof(iserv_addr);
-		    if (!cp) {
-			sock_set_errno(ERRNO_NOTSOCK);
-			reply(ESOCK_GETSOCKNAME_ERR, "4s", fd, psx_errstr());
-		    } else if (getsockname(fd, 
-					   (struct sockaddr *)&iserv_addr, 
-					   &length) < 0) {
-			reply(ESOCK_GETSOCKNAME_ERR, "4s", fd, psx_errstr());
-		    } else {
-			/*
-			 * reply  = {cmd(1), fd(4), port(2), 
-			 * 	    ipstring(N), 0(1)}
-			 */
-			reply(ESOCK_GETSOCKNAME_REP, "42s", fd, 
-			      ntohs(iserv_addr.sin_port),
-			      inet_ntoa(iserv_addr.sin_addr));
-		    }
-		    break;
-
-		case ESOCK_GETCONNINFO_CMD:
-		    /* 
-		     * ebuf = {cmd(1), fd(4)}
-		     */
-		    input("4", &fd);
-		    DEBUGF(("[GETCONNINFO_CMD] fd = %d\n", fd)); 
-		    cp = get_connection(fd);
-		    if (!cp) {
-			sock_set_errno(ERRNO_NOTSOCK);
-			reply(ESOCK_GETCONNINFO_ERR, "4s", fd, psx_errstr());
-		    } else {
-			if (esock_ssl_getprotocol_version(cp,
-							  &protocol_vsn) < 0)
-			    reply(ESOCK_GETCONNINFO_ERR, "4s", fd, psx_errstr());
-			else if (esock_ssl_getcipher(cp, &cipher) < 0)
-			    reply(ESOCK_GETCONNINFO_ERR, "4s", fd, psx_errstr());
-			else
-			/*
-			 * reply  = {cmd(1), fd(4), protocol(N), 0(1),
-			 * 	    cipher(N), 0(1)}
-			 */
-			    reply(ESOCK_GETCONNINFO_REP, "4ss", fd, 
-				  protocol_vsn, cipher);
-		    }
-		    break;
-
-		case ESOCK_GETPEERCERT_CMD:
-		    /* 
-		     * ebuf = {cmd(1), fd(4)}
-		     */
-		    input("4", &fd);
-		    DEBUGF(("[GETPEERCERT_CMD] fd = %d\n", fd)); 
-		    cp = get_connection(fd);
-		    if (!cp) {
-			sock_set_errno(ERRNO_NOTSOCK);
-			reply(ESOCK_GETPEERCERT_ERR, "4s", fd, psx_errstr());
-		    } else {
-			if ((certlen = esock_ssl_getpeercert(cp, &cert)) < 0)
-			    reply(ESOCK_GETPEERCERT_ERR, "4s", fd, psx_errstr());
-			else {
-			    /*
-			     * reply  = {cmd(1), fd(4), certlen(4), cert(N)}
-			     */
-			    reply(ESOCK_GETPEERCERT_REP, "4b", fd, 
-				  certlen, cert);
-			    esock_free(cert);
-			}
-		    }
-		    break;
-
-		case ESOCK_CONNECT_CMD:
-		    /* 
-		     * ebuf = {cmd(1), intref(4), 
-		     * 	       lport(2), lipstring(N), 0(1),  -- local
-		     *         fport(2), fipstring(N), 0(1),  -- foreign
-		     * 	       flags(N), 0(1)}
-		     */
-		    input("42s2ss", &intref, &lport, &lipstring, 
-			  &fport, &fipstring, &flags);
-		    DEBUGF(("[CONNECT_CMD] intref = %d, "
-			    "lipstring = %s lport = %d, "
-			    "fipstring = %s fport = %d, "
-			    "flags = %s\n", intref, lipstring, lport,
-			    fipstring, fport, flags));
-		    connectsock = do_connect(lipstring, lport, 
-					     fipstring, fport);
-		    if(connectsock == INVALID_FD) {
-			reply(ESOCK_CONNECT_SYNC_ERR, "4s", intref, psx_errstr());
-			break;
-		    }
-		    DEBUGF(("  fd = %d\n", connectsock));
-		    cp = new_connection(ESOCK_WAIT_CONNECT, connectsock);
-		    cp->origin = ORIG_CONNECT;
-		    length = strlen(flags);
-		    cp->flags = esock_malloc(length + 1);
-		    strcpy(cp->flags, flags);
-		    DEBUGF(("-> WAIT_CONNECT fd = %d\n", connectsock));
-		    /* Publish connectsock */
-		    reply(ESOCK_CONNECT_WAIT_REP, "44", intref, connectsock);
-		    break;
-		    
-		case ESOCK_TERMINATE_CMD:
-		    /* 
-		     * ebuf = {cmd(1)}
-		     */
-		    exit(EXIT_SUCCESS);
-		    break;
-
-		case ESOCK_CLOSE_CMD:
-		    /* 
-		     * ebuf = {cmd(1), fd(4)}
-		     */
-		    input("4", &fd);
-		    if ((cp = get_connection(fd))) {
-			DEBUGF(("%s[CLOSE_CMD]: fd = %d\n", 
-				connstr[cp->state], fd));
-			if (cp->proxy)
-			    cp->proxy->bp = 1;
-			switch (cp->state) {
-			case ESOCK_JOINED:
-			    cp->close = 1;
-			    if (JOINED_STATE_INVALID(cp))
-				leave_joined_state(cp);
-			    break;
-			case ESOCK_SSL_SHUTDOWN:
-			    cp->close = 1;
-			    DEBUGF(("  close flag set\n"));
-			    break;
-			default:
-			    DEBUGF(("-> (removal)\n"));
-			    close_and_remove_connection(cp);
-			}
-		    } else 
-			DEBUGF(("[CLOSE_CMD]: ERROR: fd = %d not found\n", fd));
-		    break;
-
-		case ESOCK_SET_SOCKOPT_CMD:
-		    /* 
-		     * ebuf = {cmd(1), fd(4), op(1), on(1)}
-		     */
-		    input("411", &fd, &op, &value);
-		    switch(op) {
-		    case ESOCK_SET_TCP_NODELAY:
-			if(setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, 
-				      (void *)&value, sizeof(value)) < 0) {
-			    DEBUGF(("Error: setsockopt TCP_NODELAY\n"));
-			    reply(ESOCK_IOCTL_ERR, "4s", fd, psx_errstr());
-			} else {
-			    reply(ESOCK_IOCTL_OK, "4", fd);
-			}
-			break;
-		    default:
-			DEBUGF(("Error: set_sock_opt - Not implemented\n"));
-			sock_set_errno(ERRNO_OPNOTSUPP);
-			reply(ESOCK_IOCTL_ERR, "4", fd, psx_errstr());
-			break;
-		    }
-		    break;
-
-		case ESOCK_LISTEN_CMD:
-		    /* 
-		     * ebuf = {cmd(1), intref(4), lport(2), ipstring(N), 0(1),
-		     * 	       backlog(2), flags(N), 0(1)}
-		     */
-		    input("42s2s", &intref, &lport, &lipstring, &backlog,
-			  &flags);
-		    DEBUGF(("[LISTEN_CMD] intref = %d, port = %d, "
-			   "ipstring = %s, backlog = %d, flags = %s\n", 
-			   intref, lport, lipstring, backlog, flags));
-		    
-		    listensock = do_listen(lipstring, lport, backlog, &lport);
-		    if(listensock == INVALID_FD) {
-			reply(ESOCK_LISTEN_SYNC_ERR, "4s", intref, psx_errstr());
-			break;
-		    }
-		    cp = new_connection(ESOCK_PASSIVE_LISTENING, listensock);
-		    /* Flags may be an empty string */
-		    length = strlen(flags);
-		    cp->flags = esock_malloc(length + 1);
-		    strcpy(cp->flags, flags);
-
-		    cp->origin = ORIG_LISTEN;
-		    if (esock_ssl_listen_init(cp) < 0) {
-			DEBUGF(("esock_ssl_listen_init() failed.\n"));
-			reply(ESOCK_LISTEN_SYNC_ERR, "4s", intref, 
-			      ssl_errstr());
-			close_and_remove_connection(cp);
-			break;
-		    }
-		    DEBUGF(("-> PASSIVE_LISTENING (fd = %d)\n", listensock));
-		    /* Publish listensock */
-		    reply(ESOCK_LISTEN_REP, "442", intref, listensock,
-			  ntohs(iserv_addr.sin_port));
-		    break;
-
-		case ESOCK_TRANSPORT_ACCEPT_CMD:
-		    /* 
-		     * ebuf =  { op(1), fd(4), flags(N), 0(1)} 
-		     */
-		    input("4s", &fd, &flags);
-		    DEBUGF(("[TRANSPORT_ACCEPT_CMD] listenfd = %d, flags = %s\n", fd, 
-			   flags));
-		    cp = get_connection(fd);
-		    if (cp) {
-			 /* We store the flags in the listen socket's 
-			  * connection, and overwrite previous flags.
-			  */
-			if ((length = strlen(flags)) > 0) {
-			    if (cp->flags)
-				cp->flags = esock_realloc(cp->flags, 
-							  length + 1);
-			    else
-				cp->flags = esock_malloc(length + 1);
-			    strcpy(cp->flags, flags);
-			}
-			if (cp->flags && cp->flags[0] != '\0') {
-			    cp->acceptors++;
-			    cp->state = ESOCK_ACTIVE_LISTENING; 
-			    DEBUGF(("-> ACTIVE_LISTENING\n"));
-			    break;
-			}
-			DEBUGF(("ERROR: flags empty\n"));
-		    }
-		    reply(ESOCK_TRANSPORT_ACCEPT_ERR, "4s", fd, "ebadf");
-		    break;
-
-		case ESOCK_SSL_ACCEPT_CMD:
-		    input("4s", &fd, &flags);
-		    DEBUGF(("[SSL_ACCEPT_CMD] fd = %d, flags = %s\n", fd, flags));
-		    cp = get_connection(fd);
-		    if (cp)
-			cp->state = ESOCK_SSL_ACCEPT;
-		    //reply(ESOCK_SSL_ACCEPT_REP, "4", fd);
-		    break;
-
-		case ESOCK_NOACCEPT_CMD:
-		    /* 
-		     * ebuf = {cmd(1), fd(4)}
-		     */
-		    input("4", &fd);
-		    DEBUGF(("[NOACCEPT_CMD] listenfd = %d\n", fd));
-		    cp = get_connection(fd);
-		    if (cp && (--cp->acceptors <= 0)) {
-			cp->acceptors = 0;
-			cp->state = ESOCK_PASSIVE_LISTENING;
-			esock_poll_clear_event(&pollfd, fd);
-			DEBUGF(("-> PASSIVE_LISTENING\n"));
-		    }
-		    break;
-
-		case ESOCK_PROXY_JOIN_CMD:
-		    /*
-		     * ebuf = {cmd(1), fd(4), portnum(2)}
-		     *
-		     * fd      - file descriptor of a connection in state
-		     *           CONNECTED
-		     * portnum - port number of the Erlang proxy peer 
-		     */
-		    input("42", &fd, &pport);
-		    cp = get_connection(fd);
-		    pp = get_proxy_by_peerport(pport);
-		    if (cp && cp->state == ESOCK_CONNECTED && pp) {
-			DEBUGF(("CONNECTED[PROXY_JOIN_CMD] fd = %d "
-				"portnum = %d\n", fd, pport));
-			cp->proxy = pp;
-			pp->conn = cp;
-			reply(ESOCK_PROXY_JOIN_REP, "4", fd);
-			cp->state = ESOCK_JOINED;
-			DEBUGF(("-> JOINED\n"));
-			break;
-		    }
-		    if (!cp) {
-			DEBUGF(("[PROXY_JOIN_CMD] ERROR: No connection "
-				"having fd = %d\n", fd));
-			reply(ESOCK_PROXY_JOIN_ERR, "4s", fd, "ebadsocket");
-		    } else if (cp->state != ESOCK_CONNECTED) {
-			DEBUGF(("%s[PROXY_JOIN_CMD] ERROR: Bad state: "
-			       "fd = %d\n", connstr[cp->state], cp->fd));
-			reply(ESOCK_PROXY_JOIN_ERR, "4s", fd, "ebadstate");
-		    } else {
-			DEBUGF(("ERROR: No proxy: fd = %d, pport = %d\n",
-			       fd, pport));
-			if (proxysock_err_cnt > 0) {
-			    proxysock_err_cnt--;
-			    reply(ESOCK_PROXY_JOIN_ERR, "4s", fd, 
-				  esock_posix_str(proxysock_last_err));
-			} else {
-			    reply(ESOCK_PROXY_JOIN_ERR, "4s", fd, 
-				  "enoproxysocket");
-			}
-			cp->state = ESOCK_DEFUNCT;
-		    }
-		    break;
-
-		case ESOCK_DUMP_STATE_CMD:
-		    dump_connections();
-		  break;
- 
-                case ESOCK_SET_DEBUG_CMD:
-                  /* 
-                   * ebuf = {cmd(1), debug(1)}
-                   */
-                  input("1", &debug);
-                  break;
-		  
-		case ESOCK_SET_DEBUGMSG_CMD:
-                  /* 
-                   * ebuf = {cmd(1), debugmsg(1)}
-                   */
-                  input("1", &debugmsg);
-                  break;
-		  
-		default:
-		    fprintf(stderr, "esock: default value in loop %c\n", 
-			    *ebuf);
-		    exit(EXIT_FAILURE);
-		    break;
-		}
-	    }
-	}
-
-	/* Go through all connections that have their file descriptors
-           set. */
-
-	/* Note: We may remove the current connection (cp). Thus we
-	 * must be careful not to read cp->next after cp has been
-	 * removed.  */
-	for (cp = next_polled_conn(connections, &cpnext, &pollfd, set_wq_fds); 
-	     cp != NULL; 
-	     cp = next_polled_conn(cpnext, &cpnext, &pollfd, set_wq_fds)
-	     ) {
-
-	    switch(cp->state) {
-
-	    case ESOCK_PASSIVE_LISTENING:
-		DEBUGF(("-----------------------------------\n"));
-		fprintf(stderr, "esock: Got connect request while PASSIVE\n");
-		exit(EXIT_FAILURE);
-		break;
-		
-	    case ESOCK_ACTIVE_LISTENING:
-		/* new connect from network */
-		DEBUGF(("-----------------------------------\n"));
-		DEBUGF(("ACTIVE_LISTENING - trying to accept on %d\n", 
-		       cp->fd));
-		length = sizeof(iserv_addr);
-		msgsock = do_accept(cp->fd, (struct sockaddr*)&iserv_addr, 
-				    (int*)&length);
-		if(msgsock == INVALID_FD)  {
-		    DEBUGF(("accept error: %s\n", psx_errstr()));
-		    reply(ESOCK_TRANSPORT_ACCEPT_ERR, "4s", cp->fd, psx_errstr());
-		    break;
-		}
-		SET_NONBLOCKING(msgsock);
-		if (--cp->acceptors <= 0) {
-		    cp->acceptors = 0;
-		    cp->state = ESOCK_PASSIVE_LISTENING;
-		    DEBUGF(("-> PASSIVE_LISTENING\n"));
-		}
-		DEBUGF(("server accepted connection on fd %d\n", msgsock));
-		newcp = new_connection(ESOCK_TRANSPORT_ACCEPT, msgsock);
-		newcp->origin = ORIG_ACCEPT;
-		reply(ESOCK_TRANSPORT_ACCEPT_REP, "44", cp->fd, msgsock);
-		newcp->listen_fd = cp->fd; /* Needed for ESOCK_ACCEPT_ERR  */
-		length = strlen(cp->flags);
-		/* XXX new flags are not needed */
-		newcp->flags = esock_malloc(length + 1);
-		strcpy(newcp->flags, cp->flags); /* XXX Why? */
-		if (esock_ssl_accept_init(newcp, cp->opaque) < 0) {
-		    cp->errstr = ssl_errstr();
-		    break;
-		}
-		newcp->ssl_want = ESOCK_SSL_WANT_READ;
-		break;
-
-	    case ESOCK_SSL_ACCEPT:
-		/* SSL accept handshake. msgsock is *not* published yet. */
-		msgsock = cp->fd;
-		DEBUGF(("-----------------------------------\n"));
-		DEBUGF(("SSL_ACCEPT fd = %d\n", msgsock));
-		if (cp->errstr != NULL) { /* this means we got an error in ssl_accept_init */
-		    /* N.B.: The *listen fd* is reported. */
-		    reply(ESOCK_SSL_ACCEPT_ERR, "4s", msgsock, cp->errstr);
-		    close_and_remove_connection(cp);
-		    break;
-		}
-		if (esock_ssl_accept(cp) < 0) {
-		    if (sock_errno() != ERRNO_BLOCK) {
-			/* Handshake failed. */
-			reply(ESOCK_SSL_ACCEPT_ERR, "4s", msgsock,
-			      ssl_errstr());
-			DEBUGF(("ERROR: handshake: %s\n", ssl_errstr()));
-			close_and_remove_connection(cp);
-		    }
-		} else {
-		    /* SSL handshake successful: publish */
-		    reply(ESOCK_SSL_ACCEPT_REP, "4", msgsock);
-		    DEBUGF(("-> CONNECTED\n"));
-		    DEBUGF((" Session was %sreused.\n", 
-			    (esock_ssl_session_reused(cp)) ? "" : "NOT "));
-		    cp->state = ESOCK_CONNECTED;
-		}
-		break;
-
-	    case ESOCK_CONNECTED:
-		/* Should not happen. We do not read or write until
-		   the connection is in state JOINED. */
-		DEBUGF(("-----------------------------------\n"));
-		DEBUGF(("CONNECTED: Error: should not happen. fd = %d\n", 
-			cp->fd));
-		break;
-
-	    case ESOCK_JOINED:
-		/* 
-		 * Reading from Proxy, writing to SSL 
-		 */
-		if (esock_poll_fd_isset_write(&pollfd, cp->fd)) {
-		    /* If there is a write queue, write to ssl only */
-		    if (cp->wq.len > 0) { 
-			/* The write retry semantics of SSL_write in
-			 * the OpenSSL package is strange. Partial
-			 * writes never occur, only complete writes or
-			 * failures.  A failure, however, still
-			 * consumes all data written, although not all
-			 * encrypted data could be written to the
-			 * underlying socket. To retry a write we have
-			 * to provide the same buf and length as in
-			 * the original call, in our case rwbuf and
-			 * the original buffer length. Hence the
-			 * strange memcpy(). Note that wq.offset will
-			 * always be zero when we use OpenSSL.  
-			 */
-			DEBUGF(("-----------------------------------\n"));
-			DEBUGF(("JOINED: writing to ssl "
-				"fd = %d, from write queue only, wc = %d\n", 
-				cp->fd, cp->wq.len - cp->wq.offset));
-			memcpy(rwbuf, cp->wq.buf, cp->wq.len - cp->wq.offset);
-
-			/* esock_ssl_write sets cp->eof, cp->bp when return
-			 * value is zero */
-			wc = esock_ssl_write(cp, rwbuf, 
-					     cp->wq.len - cp->wq.offset);
-			if (wc < 0) {
-			    if (sock_errno() != ERRNO_BLOCK) {
-				/* Assume broken SSL pipe */
-				DEBUGF(("broken SSL pipe\n"));
-				cp->bp = 1;
-				shutdown(cp->proxy->fd, SHUTDOWN_READ);
-				cp->proxy->eof = 1;
-				if (JOINED_STATE_INVALID(cp)) {
-				    leave_joined_state(cp);
-				    break;
-				}
-			    }
-			} else if (wc == 0) {
-			    /* SSL broken pipe */
-			    DEBUGF(("broken SSL pipe\n"));
-			    cp->bp = 1;
-			    shutdown(cp->proxy->fd, SHUTDOWN_READ);
-			    cp->proxy->eof = 1;
-			    if (JOINED_STATE_INVALID(cp)) {
-				leave_joined_state(cp);
-				break;
-			    }
-			} else {
-			    cp->wq.offset += wc;
-			    if (cp->wq.offset == cp->wq.len)
-				cp->wq.len = 0;
-			}
-		    }
-		} else if (esock_poll_fd_isset_read(&pollfd, cp->proxy->fd)) {
-		    /* Read from proxy and write to SSL */
-		    DEBUGF(("-----------------------------------\n"));
-		    DEBUGF(("JOINED: reading from proxy, "
-			   "proxyfd = %d\n", cp->proxy->fd));
-		    cc = sock_read(cp->proxy->fd, rwbuf, RWBUFLEN); 
-		    DEBUGF(("read from proxyfd = %d, cc = %d\n", 
-			   cp->proxy->fd, cc));
-		    if (cc > 0) {
-			/* esock_ssl_write sets cp->eof, cp->bp when return
-			 * value is zero */
-			wc = esock_ssl_write(cp, rwbuf, cc);
-			if (wc < 0) {
-			    if (sock_errno() != ERRNO_BLOCK) {
-				/* Assume broken pipe */
-				DEBUGF(("broken SSL pipe\n"));
-				cp->bp = 1;
-				shutdown(cp->proxy->fd, SHUTDOWN_READ);
-				cp->proxy->eof = 1;
-				if (JOINED_STATE_INVALID(cp)) {
-				    leave_joined_state(cp);
-				    break;
-				}
-			    } else {
-				/* add to write queue */
-				DEBUGF(("adding all to write queue "
-					"%d bytes\n", cc));
-				ensure_write_queue(&cp->wq, cc);
-				memcpy(cp->wq.buf, rwbuf, cc);
-				cp->wq.len = cc;
-				cp->wq.offset = 0;
-			    }
-			} else if (wc == 0) {
-				/* Broken SSL pipe */
-				DEBUGF(("broken SSL pipe\n"));
-				cp->bp = 1;
-				shutdown(cp->proxy->fd, SHUTDOWN_READ);
-				cp->proxy->eof = 1;
-				if (JOINED_STATE_INVALID(cp)) {
-				    leave_joined_state(cp);
-				    break;
-				}
-			} else if (wc < cc) {
-			    /* add remainder to write queue */
-			    DEBUGF(("adding remainder to write queue "
-				    "%d bytes\n", cc - wc));
-			    ensure_write_queue(&cp->wq, cc - wc);
-			    memcpy(cp->wq.buf, rwbuf + wc, cc - wc);
-			    cp->wq.len = cc - wc;
-			    cp->wq.offset = 0;
-			} 
-		    } else {
-			/* EOF proxy or error */
-		       DEBUGF(("proxy eof or error %d\n", errno));
-			cp->proxy->eof = 1;
-			if (cp->wq.len == 0) {
-			    esock_ssl_shutdown(cp);
-			    cp->bp = 1;
-			}
-			if (JOINED_STATE_INVALID(cp)) {
-			    leave_joined_state(cp);
-			    break;
-			}
-		    }
-		}
-		/* 
-		 * Reading from SSL, writing to proxy 
-		 */
-		if (esock_poll_fd_isset_write(&pollfd, cp->proxy->fd)) {
-		    /* If there is a write queue, write to proxy only */
-		    if (cp->proxy->wq.len > 0) {
-			DEBUGF(("-----------------------------------\n"));
-			DEBUGF(("JOINED: writing to proxyfd = %d, "
-				"from write queue only, wc = %d\n", 
-				cp->proxy->fd, cp->proxy->wq.len - 
-				cp->proxy->wq.offset));
-			wc = sock_write(cp->proxy->fd, cp->proxy->wq.buf + 
-					cp->proxy->wq.offset,
-					cp->proxy->wq.len - 
-					cp->proxy->wq.offset);
-			if (wc < 0) {
-			    if (sock_errno() != ERRNO_BLOCK) {
-				/* Assume broken pipe */
-				DEBUGF(("broken proxy pipe\n"));
-				cp->proxy->bp = 1;
-				/* There is no SSL shutdown for read */
-				cp->eof = 1;
-				if (JOINED_STATE_INVALID(cp)) {
-				    leave_joined_state(cp);
-				    break;
-				}
-			    }
-			} else {
-			    cp->proxy->wq.offset += wc;
-			    if (cp->proxy->wq.offset == cp->proxy->wq.len)
-				cp->proxy->wq.len = 0;
-			}
-		    }
-		} else if (esock_poll_fd_isset_read(&pollfd, cp->fd)) {
-		    /* Read from SSL and write to proxy */
-		    DEBUGF(("-----------------------------------\n"));
-		    DEBUGF(("JOINED: read from ssl fd = %d\n",
-			   cp->fd));
-		    cc = esock_ssl_read(cp, rwbuf, RWBUFLEN);
-		    DEBUGF(("read from fd = %d, cc = %d\n", cp->fd, cc));
-		    if (cc > 0) {
-			wc = sock_write(cp->proxy->fd, rwbuf, cc);
-			if (wc < 0) {
-			    if (sock_errno() != ERRNO_BLOCK) {
-				DEBUGF(("broken proxy pipe\n"));
-				/* Assume broken pipe */
-				cp->proxy->bp = 1;
-				/* There is no SSL shutdown for read */
-				cp->eof = 1;
-				if (JOINED_STATE_INVALID(cp)) {
-				    leave_joined_state(cp);
-				    break;
-				}
-			    } else {
-				/* add all to write queue */
-				DEBUGF(("adding to write queue %d bytes\n", 
-					cc));
-				ensure_write_queue(&cp->proxy->wq, cc);
-				memcpy(cp->proxy->wq.buf, rwbuf, cc);
-				cp->proxy->wq.len = cc;
-				cp->proxy->wq.offset = 0;
-			    }
-			} else if (wc < cc) {
-			    /* add to write queue */
-			    DEBUGF(("adding to write queue %d bytes\n",
-				    cc - wc));
-			    ensure_write_queue(&cp->proxy->wq, cc - wc);
-			    memcpy(cp->proxy->wq.buf, rwbuf + wc, cc - wc);
-			    cp->proxy->wq.len = cc - wc;
-			    cp->proxy->wq.offset = 0;
-			} 
-		    } else if (cc == 0) {
-			/* SSL eof */
-			DEBUGF(("SSL eof\n"));
-			cp->eof = 1;
-			if (cp->proxy->wq.len == 0) {
-			    shutdown(cp->proxy->fd, SHUTDOWN_WRITE);
-			    cp->proxy->bp = 1;
-			}
-			if (JOINED_STATE_INVALID(cp)) {
-			    leave_joined_state(cp);
-			    break;
-			}
-		    } else {
-			/* This may very well happen when reading from SSL. */
-			DEBUGF(("NOTE: readmask set, cc < 0,  fd = %d, "
-				"is ok\n", cp->fd));
-		    }
-		}
-		break;
-
-	    case ESOCK_SSL_SHUTDOWN:
-		DEBUGF(("-----------------------------------\n"));
-		DEBUGF(("SSL_SHUTDOWN: fd = %d\n", cp->fd));
-		do_shutdown(cp);
-		break;
-
-	    case ESOCK_DEFUNCT:
-		DEBUGF(("-----------------------------------\n"));
-		DEBUGF(("DEFUNCT: ERROR: should not happen. fd = %d\n", 
-			cp->fd));
-		break;
-
-	    case ESOCK_WAIT_CONNECT:
-		/* New connection shows up */
-		connectsock = cp->fd;/* Is published */
-		DEBUGF(("-----------------------------------\n"));
-		DEBUGF(("WAIT_CONNECT fd = %d\n", connectsock));
-
-		/* If the connection did succeed it's possible to
-		 * fetch the peer name (UNIX); or failure shows in
-		 * exceptmask (WIN32). Sorry for the mess below, but
-		 * we have to have balanced paren's in #ifdefs in
-		 * order not to confuse Emacs' indentation.  */
-		length = sizeof(iserv_addr);
-		if (
-#ifdef __WIN32__
-		    esock_poll_fd_isset_exception(&pollfd, connectsock)
-#else
-		    getpeername(connectsock, (struct sockaddr *)&iserv_addr, 
-				&length) < 0
-#endif
-		    ) {
-		    sock_set_errno(ERRNO_CONNREFUSED);
-		    DEBUGF(("connect error: %s\n", psx_errstr()));
-		    reply(ESOCK_CONNECT_ERR, "4s", connectsock, psx_errstr());
-		    cp->state = ESOCK_DEFUNCT;
-		    break;
-		}
-		if (esock_ssl_connect_init(cp) < 0) {
-		    DEBUGF(("esock_ssl_connect_init() failed\n"));
-		    reply(ESOCK_CONNECT_ERR, "4s", connectsock, ssl_errstr());
-		    cp->state = ESOCK_DEFUNCT;
-		    break;
-		}
-		DEBUGF(("-> SSL_CONNECT\n"));
-		cp->state = ESOCK_SSL_CONNECT;
-		cp->ssl_want = ESOCK_SSL_WANT_WRITE;
-		break;
-
-	    case ESOCK_SSL_CONNECT:
-		/* SSL connect handshake. connectsock is published. */
-		connectsock = cp->fd;
-		DEBUGF(("-----------------------------------\n"));
-		DEBUGF(("SSL_CONNECT fd = %d\n", connectsock));
-		if (esock_ssl_connect(cp) < 0) {
-		    if (sock_errno() != ERRNO_BLOCK) {
-			/* Handshake failed */
-			DEBUGF(("ERROR: handshake: %s\n", ssl_errstr()));
-			reply(ESOCK_CONNECT_ERR, "4s", connectsock,
-			      ssl_errstr());
-			cp->state = ESOCK_DEFUNCT;
-		    }
-		} else {
-		    /* SSL connect handshake successful */
-		    DEBUGF(("-> CONNECTED\n"));
-		    reply(ESOCK_CONNECT_REP, "4", connectsock);
-		    cp->state = ESOCK_CONNECTED;
-		}
-		break;
-
-	    default:
-		DEBUGF(("ERROR: Connection in unknown state.\n"));
-	    }
-	}
-   }
-}
-
-static int set_poll_conns(Connection *cp, EsockPoll *ep, int verbose)
-{
-    int i = 0;
-    
-    if (verbose)
-	DEBUGF(("MASKS SET FOR FD: "));
-    while (cp) {
-	switch (cp->state) {
-	case ESOCK_ACTIVE_LISTENING:
-	    if (verbose)
-		DEBUGF(("%d (read) ", cp->fd));
-	    esock_poll_fd_set_read(ep, cp->fd);
-	    break;
-	case ESOCK_WAIT_CONNECT:
-	    if (verbose)
-		DEBUGF(("%d (write) ", cp->fd));
-	    esock_poll_fd_set_write(ep, cp->fd);
-#ifdef __WIN32__
-	    esock_poll_fd_set_exception(ep, cp->fd); /* Failure shows in exceptions */
-#endif
-	    break;
-	case ESOCK_SSL_CONNECT:
-	case ESOCK_SSL_ACCEPT:
-	    if (cp->ssl_want == ESOCK_SSL_WANT_READ) {
-		if (verbose)
-		    DEBUGF(("%d (read) ", cp->fd));
-		esock_poll_fd_set_read(ep, cp->fd);
-	    } else if (cp->ssl_want == ESOCK_SSL_WANT_WRITE) {
-		if (verbose)
-		    DEBUGF(("%d (write) ", cp->fd));
-		esock_poll_fd_set_write(ep, cp->fd);
-	    }
-	    break;
-	case ESOCK_JOINED:
-	    if (!cp->bp) {
-		if (cp->wq.len) {
-		    if (verbose)
-			DEBUGF(("%d (write) ", cp->fd));
-		    esock_poll_fd_set_write(ep, cp->fd);
-		} else if (!cp->proxy->eof) {
-		    if (verbose)
-			DEBUGF(("%d (read) ", cp->proxy->fd));
-		    esock_poll_fd_set_read(ep, cp->proxy->fd);
-		}
-	    }
-	    if (!cp->proxy->bp) {
-		if (cp->proxy->wq.len) {
-		    if (verbose)
-			DEBUGF(("%d (write) ", cp->proxy->fd));
-		    esock_poll_fd_set_write(ep, cp->proxy->fd);
-		} else if (!cp->eof) {
-		    if (verbose)
-			DEBUGF(("%d (read) ", cp->fd));
-		    esock_poll_fd_set_read(ep, cp->fd);
-		}
-	    }
-	    break;
-	case ESOCK_SSL_SHUTDOWN:
-	    if (cp->ssl_want == ESOCK_SSL_WANT_READ) {
-		if (verbose)
-		    DEBUGF(("%d (read) ", cp->fd));
-		esock_poll_fd_set_read(ep, cp->fd);
-	    } else if (cp->ssl_want == ESOCK_SSL_WANT_WRITE) {
-		if (verbose)
-		    DEBUGF(("%d (write) ", cp->fd));
-		esock_poll_fd_set_write(ep, cp->fd);
-	    }
-	    break;
-	default:
-	    break;
-	}
-	i++;
-	cp = cp->next;
-    }
-    if (verbose)
-	DEBUGF(("\n"));
-    return i;
-}
-
-
-static Connection *next_polled_conn(Connection *cp, Connection **cpnext,
-				    EsockPoll *ep, int set_wq_fds)
-{
-    while(cp) {
-	if (esock_poll_fd_isset_read(ep, cp->fd) ||
-	    (cp->proxy && esock_poll_fd_isset_read(ep, cp->proxy->fd)) ||
-	    (esock_poll_fd_isset_write(ep, cp->fd)) ||
-	    (cp->proxy && esock_poll_fd_isset_write(ep, cp->proxy->fd))
-#ifdef __WIN32__
-	    || esock_poll_fd_isset_exception(ep, cp->fd) /* Connect failure in WIN32 */
-#endif
-	    || (set_wq_fds && (cp->wq.len || 
-			       (cp->proxy && cp->proxy->wq.len)))
-	    || cp->errstr != NULL) {
-	    *cpnext = cp->next;
-	    return cp;
-	}
-	cp = cp->next;
-    }
-    *cpnext = NULL;
-    return NULL;
-}
-
-static void leave_joined_state(Connection *cp)
-{
-    shutdown(cp->proxy->fd, SHUTDOWN_ALL);
-    if (((cp->bp || cp->eof) && cp->clean) ||
-	(!cp->bp && !cp->eof)) {
-	DEBUGF(("-> SSL_SHUTDOWN\n"));
-	cp->state = ESOCK_SSL_SHUTDOWN;
-	cp->ssl_want = ESOCK_SSL_WANT_WRITE;
-	do_shutdown(cp);
-    } else if (cp->close) {
-	DEBUGF(("-> (removal)\n"));
-	close_and_remove_connection(cp);
-    } else {
-	DEBUGF(("-> DEFUNCT\n"));
-	cp->state = ESOCK_DEFUNCT;
-    }
-}
-
-/* We are always in state SHUTDOWN here */
-static void do_shutdown(Connection *cp)
-{
-    int ret;
-
-    ret = esock_ssl_shutdown(cp); 
-    if (ret < 0) {
-	if (sock_errno() == ERRNO_BLOCK) {
-	    return;
-	} else {
-	    /* Something is wrong -- close and remove or move to DEFUNCT */
-	    DEBUGF(("Error in SSL shutdown\n"));
-	    if (cp->close) {
-		DEBUGF(("-> (removal)\n"));
-		close_and_remove_connection(cp);
-	    } else {
-		DEBUGF(("-> DEFUNCT\n"));
-		cp->state = ESOCK_DEFUNCT;
-	    }
-	}
-    } else if (ret == 0) {
-	/* `close_notify' has been sent. Wait for reception of
-           same. */
-	return; 
-    } else if (ret == 1) {
-	/* `close_notify' has been sent, and received. */
-	if (cp->close) {
-	    DEBUGF(("-> (removal)\n"));
-	    close_and_remove_connection(cp);
-	} else {
-	    DEBUGF(("-> DEFUNCT\n"));
-	    cp->state = ESOCK_DEFUNCT;
-	}
-    }
-}
-
-static void close_and_remove_connection(Connection *cp)
-{
-    safe_close(cp->fd);
-    remove_connection(cp);
-}
-
-static int reply(int cmd, char *fmt, ...)
-{
-    static unsigned char replybuf[MAXREPLYBUF];
-    unsigned char *buf = replybuf;
-    va_list args;
-    int len;
-
-    va_start(args, fmt);
-    len = put_pars(NULL, fmt, args);
-    va_end(args);
-    len++;
-    if (len > sizeof(replybuf))
-	buf = esock_malloc(len);
-
-    PUT_INT8(cmd, buf);
-    va_start(args, fmt);
-    (void) put_pars(buf + 1, fmt, args);
-    va_end(args);
-    write_ctrl(buf, len);
-    if (buf != replybuf)
-	esock_free(buf);
-    return len;
-}
-
-static int input(char *fmt, ...)
-{
-    va_list args;
-    int len;
-
-    va_start(args, fmt);
-    len = get_pars(ebuf + 1, fmt, args);
-    va_end(args);
-    return len + 1;
-}
-
-static int put_pars(unsigned char *buf, char *fmt, va_list args)
-{
-    char *s, *str, *bin;
-    int val, len, pos = 0;
-
-    s = fmt;
-    while (*s) {
-	switch (*s) {
-	case '1':
-	    val = va_arg(args, int);
-	    if (buf)
-		PUT_INT8(val, buf + pos);
-	    pos++;
-	    break;
-	case '2':
-	    val = va_arg(args, int);
-	    if (buf)
-		PUT_INT16(val, buf + pos);
-	    pos += 2;
-	    break;
-	case '4':
-	    val = va_arg(args, int);
-	    if (buf)
-		PUT_INT32(val, buf + pos);
-	    pos += 4;
-	    break;
-	case 's':		/* string */
-	    str = va_arg(args, char *);
-	    if (buf)
-		strcpy((char *)(buf + pos), str);
-	    pos += strlen(str) + 1;
-	    break;
-	case 'b':		/* binary */
-	    len = va_arg(args, int);
-	    if (buf)
-		PUT_INT32(len, buf + pos);
-	    pos += 4;
-	    bin = va_arg(args, char *);
-	    if (buf)
-		memcpy(buf + pos, bin, len);
-	    pos += len;
-	    break;
-	default:
-	    fprintf(stderr, "esock: Invalid format character: %c\n", *s);
-	    exit(EXIT_FAILURE);
-	    break;
-	}
-	s++;
-    }
-    return pos;
-}
-
-
-static int get_pars(unsigned char *buf, char *fmt, va_list args)
-{
-    int *ip;
-    char *s, **strp, **bin;
-    int pos = 0;
-
-    s = fmt;
-    while (*s) {
-	switch (*s) {
-	case '1':
-	    ip = va_arg(args, int *);
-	    *ip = GET_INT8(buf + pos);
-	    pos++;
-	    break;
-	case '2':
-	    ip = va_arg(args, int *);
-	    *ip = GET_INT16(buf + pos);
-	    pos += 2;
-	    break;
-	case '4':
-	    ip = va_arg(args, int *);
-	    *ip = GET_INT32(buf + pos);
-	    pos += 4;
-	    break;
-	case 's':
-	    strp = va_arg(args, char **);
-	    *strp = (char *)(buf + pos);
-	    pos += strlen(*strp) + 1;
-	    break;
-	case 'b':
-	    ip = va_arg(args, int *);
-	    *ip = GET_INT32(buf + pos);
-	    pos += 4;
-	    bin = va_arg(args, char **);
-	    *bin = (char *)(buf + pos);
-	    pos += *ip;
-	    break;
-	default:
-	    fprintf(stderr, "esock: Invalid format character: %c\n", *s);
-	    exit(EXIT_FAILURE);
-	    break;
-	}
-	s++;
-    }
-    return pos;
-}
-
-static FD do_connect(char *lipstring, int lport, char *fipstring, int fport)
-{
-    struct sockaddr_in sock_addr;
-    long inaddr;
-    FD fd;
-   
-    if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_FD) {
-	DEBUGF(("Error calling socket()\n"));
-	return fd;
-    }
-    if (check_num_sock_fds(fd) < 0) 
-	return INVALID_FD;
-    DEBUGF(("  fd = %d\n", fd));
-
-    /* local */
-    if ((inaddr = inet_addr(lipstring)) == INADDR_NONE) {
-	DEBUGF(("Error in inet_addr(): lipstring = %s\n", lipstring));
-	safe_close(fd);
-	sock_set_errno(ERRNO_ADDRNOTAVAIL);
-	return INVALID_FD;
-    }
-    memset(&sock_addr, 0, sizeof(sock_addr));
-    sock_addr.sin_family = AF_INET;
-    sock_addr.sin_addr.s_addr = inaddr;
-    sock_addr.sin_port = htons(lport);
-    if(bind(fd, (struct sockaddr*) &sock_addr, sizeof(sock_addr)) < 0) {
-	DEBUGF(("Error in bind()\n"));
-	safe_close(fd);
-	/* XXX Set error code for bind error */
-	return INVALID_FD;
-    }
-
-    /* foreign */
-    if ((inaddr = inet_addr(fipstring)) == INADDR_NONE) {
-	DEBUGF(("Error in inet_addr(): fipstring = %s\n", fipstring));
-	safe_close(fd);
-	sock_set_errno(ERRNO_ADDRNOTAVAIL);
-	return INVALID_FD;
-    }
-    memset(&sock_addr, 0, sizeof(sock_addr));
-    sock_addr.sin_family = AF_INET;
-    sock_addr.sin_addr.s_addr = inaddr;
-    sock_addr.sin_port = htons(fport);
-
-    SET_NONBLOCKING(fd);
-
-    if(connect(fd, (struct sockaddr*)&sock_addr, sizeof(sock_addr)) < 0) {
-	if (sock_errno() != ERRNO_PROGRESS && /* UNIX */
-	    sock_errno() != ERRNO_BLOCK) { /* WIN32 */
-	    DEBUGF(("Error in connect()\n"));
-	    safe_close(fd);
-	    return INVALID_FD;
-	}
-    }
-    return fd;
-}
-
-static FD do_listen(char *ipstring, int lport, int backlog, int *aport)
-{
-    static int one = 1;		/* Type must be int, not long */
-    struct sockaddr_in sock_addr;
-    long inaddr;
-    int length;
-    FD fd;
-    
-    if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_FD) {
-	DEBUGF(("Error calling socket()\n"));
-	return fd;
-    }
-    if (check_num_sock_fds(fd) < 0) 
-	return INVALID_FD;
-    DEBUGF(("  fd = %d\n", fd));
-    if ((inaddr = inet_addr(ipstring)) == INADDR_NONE) {
-	DEBUGF(("Error in inet_addr(): ipstring = %s\n", ipstring));
-	safe_close(fd);
-	sock_set_errno(ERRNO_ADDRNOTAVAIL);
-	return INVALID_FD;
-    }
-    memset(&sock_addr, 0, sizeof(sock_addr));
-    sock_addr.sin_family = AF_INET;
-    sock_addr.sin_addr.s_addr = inaddr;
-    sock_addr.sin_port = htons(lport);
-
-    setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void *)&one, sizeof(one));
-
-    if(bind(fd, (struct sockaddr*) &sock_addr, sizeof(sock_addr)) < 0) {
-	DEBUGF(("Error in bind()\n"));
-	safe_close(fd);
-	return INVALID_FD;
-    }
-    if (listen(fd, backlog) < 0) {
-	DEBUGF(("Error in listen()\n"));
-	safe_close(fd);
-	return INVALID_FD;
-    }
-    /* find out assigned local port number */
-    length = sizeof(sock_addr);
-    if (getsockname(fd, (struct sockaddr *)&sock_addr, &length) < 0) {
-	DEBUGF(("Error in getsockname()\n"));
-	safe_close(fd);
-	return INVALID_FD;
-    }
-    if (aport)
-	*aport = ntohs(sock_addr.sin_port);
-    return fd;
-}
-
-static FD do_accept(FD listensock, struct sockaddr *saddr, int *len)
-{
-    FD fd;
-
-    if ((fd = accept(listensock, saddr, len)) == INVALID_FD) {
-	DEBUGF(("Error calling accept()\n"));
-	return fd;
-    }
-    if (check_num_sock_fds(fd) < 0) 
-	return INVALID_FD;
-    return fd;
-}
-
-static Connection *new_connection(int state, FD fd)
-{
-    Connection *cp;
-    
-    if (!(cp = esock_malloc(sizeof(Connection))))
-	return NULL;
-    cp->state = state;
-    cp->acceptors = 0;
-    cp->fd = fd;
-    cp->listen_fd = INVALID_FD;
-    cp->proxy = NULL;
-    cp->opaque = NULL;
-    cp->ssl_want = 0;
-    cp->eof = 0;
-    cp->bp = 0;
-    cp->clean = 0;		/* XXX Used? */
-    cp->close = 0;
-    cp->origin = -1;
-    cp->flags = NULL;
-    cp->logfp = NULL;
-    cp->wq.size = 0;
-    cp->wq.buf = NULL;
-    cp->wq.len = 0;
-    cp->wq.offset = 0;
-    cp->next = connections;
-    cp->errstr = NULL;
-    connections = cp;
-    return cp;
-}
-
-
-static void print_connections(void)
-{
-    if (debug) {
-	Connection *cp = connections;
-	DEBUGF(("CONNECTIONS:\n"));
-	while (cp) {
-	    if (cp->state == ESOCK_JOINED) {
-		DEBUGF((" - %s [%8p] (origin = %s)\n"
-			"       (fd = %d, eof = %d, wq = %d, bp = %d)\n"
-			"       (proxyfd = %d, eof = %d, wq = %d, bp = %d)\n", 
-		       connstr[cp->state], cp, originstr[cp->origin],
-			cp->fd, cp->eof, cp->wq.len, cp->bp,
-			cp->proxy->fd, cp->proxy->eof, cp->proxy->wq.len, 
-			cp->proxy->bp));
-	    } else if (cp->state == ESOCK_ACTIVE_LISTENING) {
-		DEBUGF((" - %s [%8p] (fd = %d, acceptors = %d)\n", 
-		       connstr[cp->state], cp, cp->fd, cp->acceptors));
-	    } else {
- 		DEBUGF((" - %s [%8p] (fd = %d)\n", connstr[cp->state], cp, 
-		       cp->fd));
-	    }
-	    cp= cp->next;
-	}
-    }
-}
-
-static void dump_connections(void)
-{
-    Connection *cp = connections;
-    Proxy      *pp = proxies;
-    time_t t = time(NULL);
-    int length = 0;
-    struct sockaddr_in iserv_addr;
-
-    __debugprintf("CONNECTIONS %s", ctime(&t));
-    while (cp) {
-	if (cp->state == ESOCK_JOINED) {
-	    __debugprintf(" - %s [%8p] (origin = %s)\n"
-			  "       (fd = %d, eof = %d, wq = %d, bp = %d), close = %d\n"
-			  "       (proxyfd = %d, eof = %d, wq = %d, bp = %d)\n", 
-			  connstr[cp->state], cp, originstr[cp->origin],
-			  cp->fd, cp->eof, cp->wq.len, cp->bp, cp->close,
-			  cp->proxy->fd, cp->proxy->eof, cp->proxy->wq.len, 
-			  cp->proxy->bp);
-	} else if (cp->state == ESOCK_ACTIVE_LISTENING) {
-	    __debugprintf(" - %s [%8p] (fd = %d, acceptors = %d)\n", 
-			  connstr[cp->state], cp, cp->fd, cp->acceptors);
-	} else {
-	    __debugprintf(" - %s [%8p] (fd = %d)\n", connstr[cp->state], cp, 
-			  cp->fd);
-	}
-	length = sizeof(iserv_addr);
-	if ((cp->state == ESOCK_ACTIVE_LISTENING) ||
-	    (cp->state == ESOCK_PASSIVE_LISTENING)) {
-	    getsockname(cp->fd, (struct sockaddr *) &iserv_addr, &length);
-	    __debugprintf("       (ip = %s, port = %d)\n",
-			  inet_ntoa(iserv_addr.sin_addr),
-			  ntohs(iserv_addr.sin_port));
-	}
-	else {
-	    getsockname(cp->fd, (struct sockaddr *) &iserv_addr, &length);
-	    __debugprintf("       (local_ip = %s, local_port = %d)\n",
-			  inet_ntoa(iserv_addr.sin_addr),
-			  ntohs(iserv_addr.sin_port));
-	    length = sizeof(iserv_addr);
-	    getpeername(cp->fd, (struct sockaddr *) &iserv_addr, &length);
-	    __debugprintf("       (remote_ip = %s, remote_port = %d)\n",
-			  inet_ntoa(iserv_addr.sin_addr),
-			  ntohs(iserv_addr.sin_port));
-	}
-	cp=cp->next;
-    }
-  
-    __debugprintf("PROXIES\n");
-    while (pp) {
-	__debugprintf(" - fd = %d [%8p] (external_fd = %d, peer_port = %d,"
-		      " eof = %d)\n", pp->fd, pp, pp->conn->fd, pp->peer_port,
-		      pp->eof);
-    
-	pp= pp->next;
-    }
-}
-
-static Connection *get_connection(FD fd)
-{
-    Connection *cp = connections;
-    
-    while(cp) {
-	if(cp->fd == fd)
-	    return cp;
-	cp = cp->next;
-    }
-    return NULL;
-}
-
-/* 
- * Remove a connection from the list of connection, close the proxy
- * socket and free all resources. The main socket (fd) is *not* 
- * closed here, because the closing of that socket has to be synchronized
- * with the Erlang process controlling this port program.
- */
-static void remove_connection(Connection *conn)
-{
-    Connection **prev = &connections;
-    Connection *cp = connections; 
-    
-    while (cp) {
-	if(cp == conn) {
-	    DEBUGF(("remove_connection: fd = %d\n", cp->fd));
-	    esock_ssl_free(cp);	/* frees cp->opaque only */
-	    esock_free(cp->flags);
-	    closelog(cp->logfp); /* XXX num_sock_fds */
-	    esock_free(cp->wq.buf);
-	    if (cp->proxy) {
-		safe_close(cp->proxy->fd);
-		remove_proxy(cp->proxy);
-	    }
-	    *prev = cp->next;
-	    esock_free(cp);
-	    return;
-	}
-	prev = &cp->next;
-	cp = cp->next;
-    }
-}
-
-static Proxy *get_proxy_by_peerport(int port)
-{
-    Proxy *p = proxies;
-
-    while(p) {
-	if (p->peer_port == port)
-	    return p;
-	p = p->next;
-    }
-    return NULL;
-}
-
-static Proxy *new_proxy(FD fd)
-{
-    Proxy *p;
-
-    if (!(p = esock_malloc(sizeof(Proxy))))
-	return NULL;
-
-    p->fd = fd;
-    p->peer_port = -1;
-    p->eof = 0;
-    p->bp = 0;
-    p->conn = NULL;
-    p->wq.size = 0;
-    p->wq.buf = NULL;
-    p->wq.len = 0;
-    p->wq.offset = 0;
-    p->next = proxies;
-    proxies = p;
-    return p;
-}
-
-static void remove_proxy(Proxy *proxy)
-{
-    Proxy *p = proxies, **pp = &proxies;
-
-    while(p) {
-	if (p == proxy) {
-	    DEBUGF(("remove_proxyfd = %d\n", p->fd));
-	    esock_free(p->wq.buf);
-	    *pp = p->next;
-	    esock_free(p);
-	    return;
-	}
-	pp = &p->next;
-	p = p->next;
-    }
-}
-
-static int check_num_sock_fds(FD fd) 
-{
-    num_sock_fds++;		/* fd is valid */
-#ifdef USE_SELECT
-    if (num_sock_fds > FD_SETSIZE) {
-	num_sock_fds--;
-	sock_set_errno(ERRNO_MFILE);
-	safe_close(fd);
-	return -1;
-    }
-#endif
-    return 0;
-}
-
-static void safe_close(FD fd)
-{
-    int err;
-
-    err = sock_errno();
-    DEBUGF(("safe_close fd = %d\n", fd));
-    if (sock_close(fd) < 0) {
-	DEBUGF(("safe_close failed\n"));
-    } else {
-	num_sock_fds--;
-    }
-    sock_set_errno(err);
-}
-
-static void clean_up(void)
-{
-    Connection *cp, *cpnext;
-    Proxy *pp, *ppnext;
-
-    cp = connections;
-    while (cp) {
-	safe_close(cp->fd);
-	cpnext = cp->next;
-	remove_connection(cp);
-	cp = cpnext;
-    }
-    
-    pp = proxies;
-    while (pp) {
-	safe_close(pp->fd);
-	ppnext = pp->next;
-	remove_proxy(pp);
-	pp = ppnext;
-    }
-}
-
-static void ensure_write_queue(WriteQueue *wq, int size)
-{
-    if (wq->size < size) {
-	wq->buf = esock_realloc(wq->buf, size);
-	wq->size = size;
-    }
-}
-
-
-
-
-
-
-