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/******************************************************************
* $Id: nanohttp-socket.c,v 1.43 2006/01/10 11:29:05 snowdrop Exp $
*
* CSOAP Project: A http client/server library in C
* Copyright (C) 2003 Ferhat Ayaz
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Email: ferhatayaz@yahoo.com
******************************************************************/
#include <nanohttp/nanohttp-socket.h>
#include <nanohttp/nanohttp-common.h>
#include <nanohttp/nanohttp-ssl.h>
#ifdef WIN32
#include "wsockcompat.h"
#include <winsock2.h>
#include <process.h>
#ifndef __MINGW32__
typedef int ssize_t;
#endif
#else
#include <fcntl.h>
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdio.h>
#include <errno.h>
#include <string.h>
#ifdef MEM_DEBUG
#include <utils/alloc.h>
#endif
#ifdef WIN32
#undef errno
#define errno WSAGetLastError()
#endif
#ifdef HAVE_SSL
SSL_CTX *SSLctx = NULL;
char *SSLCert = NULL;
char *SSLPass = NULL;
char *SSLCA = NULL;
int SSLCertLess = 0;
#endif
/*--------------------------------------------------
FUNCTION: hsocket_module_init
NOTE: This will be called from httpd_init()
for server and from httpc_init() for client
----------------------------------------------------*/
herror_t
hsocket_module_init()
{
#ifdef WIN32
struct WSAData info;
WSAStartup(MAKEWORD(2, 2), &info);
#else /* */
/* nothing to init for unix sockets */
#endif /* */
return H_OK;
}
/*--------------------------------------------------
FUNCTION: hsocket_module_destroy
----------------------------------------------------*/
void
hsocket_module_destroy()
{
#ifdef WIN32
WSACleanup();
#else /* */
/* nothing to destroy for unix sockets */
#endif /* */
}
/*--------------------------------------------------
FUNCTION: hsocket_init
----------------------------------------------------*/
herror_t
hsocket_init(hsocket_t * sock)
{
log_verbose1("Starting hsocket init");
/* just set the descriptor to -1 */
sock->sock = -1;
#ifdef HAVE_SSL
sock->ssl = NULL;
if (SSLCert || SSLCertLess)
{
log_verbose1("calling init ctx");
SSLctx = initialize_ctx(SSLCert, SSLPass, SSLCA);
if (SSLctx == NULL)
{
return herror_new("hsocket_init", HSOCKET_ERROR_CONNECT,
"Unable to initialize SSL CTX");
}
}
#endif
return H_OK;
}
/*--------------------------------------------------
FUNCTION: hsocket_free
----------------------------------------------------*/
void
hsocket_free(hsocket_t sock)
{
/* nothing to free for unix sockets */
}
/*--------------------------------------------------
FUNCTION: hsocket_open
----------------------------------------------------*/
herror_t
hsocket_open(hsocket_t * dsock, const char *hostname, int port)
{
hsocket_t sock;
char *ip;
struct sockaddr_in address;
struct hostent *host;
sock.sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock.sock <= 0)
return herror_new("hsocket_open", HSOCKET_ERROR_CREATE,
"Socket error: %d", errno);
/* Get host data */
host = gethostbyname(hostname);
if (host == NULL)
return herror_new("hsocket_open", HSOCKET_ERROR_GET_HOSTNAME,
"Socket error: %d", errno);
ip = inet_ntoa(*(struct in_addr *) *host->h_addr_list);
address.sin_addr.s_addr = inet_addr(ip);
/* set server addresss */
address.sin_family = host->h_addrtype;
address.sin_port = htons((unsigned short) port);
/* connect to the server */
if (connect(sock.sock, (struct sockaddr *) &address, sizeof(address)) != 0)
return herror_new("hsocket_open", HSOCKET_ERROR_CONNECT,
"Socket error: %d", errno);
#ifdef HAVE_SSL
if (!SSLctx)
{
#endif
log_verbose1("Using HTTP");
dsock->sock = sock.sock;
#ifdef HAVE_SSL
}
else
{
log_verbose1("Using HTTPS");
dsock->ssl = init_ssl(SSLctx, sock.sock, SSL_CLIENT);
}
#endif
return H_OK;
}
/*--------------------------------------------------
FUNCTION: hsocket_bind
----------------------------------------------------*/
herror_t
hsocket_bind(hsocket_t * dsock, int port)
{
hsocket_t sock;
struct sockaddr_in addr;
int opt = 1;
/* create socket */
sock.sock = socket(AF_INET, SOCK_STREAM, 0);
if (sock.sock == -1)
{
log_error3("Can not create socket: '%s'", "Socket error: %d", errno);
return herror_new("hsocket_bind", HSOCKET_ERROR_CREATE,
"Socket error: %d", errno);
}
setsockopt(sock.sock, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
/* bind socket */
addr.sin_family = AF_INET;
addr.sin_port = htons((unsigned short) port); /* short, network byte order */
addr.sin_addr.s_addr = INADDR_ANY;
memset(&(addr.sin_zero), '\0', 8); /* zero the rest of the struct */
if (bind(sock.sock, (struct sockaddr *) &addr, sizeof(struct sockaddr)) ==
-1)
{
log_error3("Can not bind: '%s'", "Socket error: %d", errno);
return herror_new("hsocket_bind", HSOCKET_ERROR_BIND, "Socket error: %d",
errno);
}
dsock->sock = sock.sock;
return H_OK;
}
/*----------------------------------------------------------
FUNCTION: hsocket_accept
----------------------------------------------------------*/
herror_t
hsocket_accept(hsocket_t sock, hsocket_t * dest)
{
socklen_t asize;
hsocket_t sockfd;
struct sockaddr_in addr;
if (sock.sock <= 0)
return herror_new("hsocket_accept", HSOCKET_ERROR_NOT_INITIALIZED,
"Called hsocket_listen() before initializing!");
asize = sizeof(struct sockaddr_in);
#ifdef WIN32
while (1)
{
sockfd.sock = accept(sock.sock, (struct sockaddr *) &addr, &asize);
if (sockfd.sock == INVALID_SOCKET)
{
if (WSAGetLastError() != WSAEWOULDBLOCK)
return herror_new("hsocket_accept", HSOCKET_ERROR_ACCEPT,
"Socket error: %d", errno);
}
else
{
break;
}
}
#else
/* TODO (#1#): why not a loop like in win32? */
sockfd.sock = accept(sock.sock, (struct sockaddr *) &addr, &asize);
if (sockfd.sock == -1)
{
return herror_new("hsocket_accept", HSOCKET_ERROR_ACCEPT,
"Socket error: %d", errno);
}
#endif
/* TODO (#1#): Write to access.log file */
log_verbose3("accept new socket (%d) from '%s'", sockfd.sock,
SAVE_STR(((char *) inet_ntoa(addr.sin_addr))));
dest->sock = sockfd.sock;
return H_OK;
}
/*--------------------------------------------------
FUNCTION: hsocket_listen
----------------------------------------------------*/
herror_t
hsocket_listen(hsocket_t sock)
{
if (sock.sock <= 0)
return herror_new("hsocket_listen", HSOCKET_ERROR_NOT_INITIALIZED,
"Called hsocket_listen() before initializing!");
if (listen(sock.sock, 15) == -1)
{
log_error3("Can not listen: '%s'", "Socket error: %d", errno);
return herror_new("hsocket_listen", HSOCKET_ERROR_LISTEN,
"Socket error: %d", errno);
}
return H_OK;
}
#if 0
static void
_hsocket_wait_until_receive(hsocket_t sock)
{
fd_set fds;
struct timeval timeout;
timeout.tv_sec = 1;
timeout.tv_usec = 0;
while (1)
{
log_verbose1("waiting until receive mode");
/* zero and set file descriptior */
FD_ZERO(&fds);
FD_SET(sock, &fds);
/* select socket descriptor */
switch (select(sock + 1, &fds, NULL, NULL, &timeout))
{
case 0:
/* descriptor is not ready */
continue;
case -1:
/* got a signal? */
continue;
default:
/* no nothing */
break;
}
if (FD_ISSET(sock, &fds))
{
break;
}
}
}
#endif
/*--------------------------------------------------
FUNCTION: hsocket_close
----------------------------------------------------*/
void
hsocket_close(hsocket_t sock)
{
char junk[10];
/* _hsocket_wait_until_receive(sock);*/
log_verbose2("closing socket %d...", sock.sock);
/*
struct linger _linger;
hsocket_block(sock,1);
_linger.l_onoff =1;
_linger.l_linger = 30000;
setsockopt(sock, SOL_SOCKET, SO_LINGER, (const char*)&_linger, sizeof(struct linger));
*/
#ifdef WIN32
/* shutdown(sock,SD_RECEIVE); */
shutdown(sock.sock, SD_SEND);
while (recv(sock.sock, junk, sizeof(junk), 0) > 0)
{
};
closesocket(sock.sock);
#else
/* XXX m. campbell - It seems like the while loop here needs this */
fcntl(sock.sock, F_SETFL, O_NONBLOCK);
#ifdef HAVE_SSL
if (sock.ssl)
{
log_verbose1("Closing SSL");
ssl_cleanup(sock.ssl);
shutdown(sock.sock, SHUT_RDWR);
while (recv(sock.sock, junk, sizeof(junk), 0) > 0)
{
};
close(sock.sock);
}
else
{
#endif
shutdown(sock.sock, SHUT_RDWR);
while (recv(sock.sock, junk, sizeof(junk), 0) > 0)
{
};
close(sock.sock);
#ifdef HAVE_SSL
}
#endif
#endif
log_verbose1("socket closed");
}
#if 0
static int
_test_send_to_file(const char *filename, const byte_t * bytes, int n)
{
int size;
FILE *f = fopen(filename, "ab");
if (!f)
f = fopen(filename, "wb");
size = fwrite(bytes, 1, n, f);
fclose(f);
return size;
}
#endif
/*--------------------------------------------------
FUNCTION: hsocket_send
----------------------------------------------------*/
herror_t
hsocket_nsend(hsocket_t sock, const byte_t * bytes, int n)
{
int size;
int total = 0;
log_verbose1("Starting to send");
#ifdef HAVE_SSL
if (sock.sock <= 0 && !sock.ssl)
#else
if (sock.sock <= 0)
#endif
return herror_new("hsocket_nsend", HSOCKET_ERROR_NOT_INITIALIZED,
"Called hsocket_listen() before initializing!");
// log_verbose2( "SENDING %s", bytes );
/* TODO (#1#): check return value and send again until n bytes sent */
while (1)
{
#ifdef HAVE_SSL
if (sock.ssl)
{
size = SSL_write(sock.ssl, bytes + total, n);
}
else
{
#endif
size = send((int) sock.sock, bytes + total, n, 0);
#ifdef HAVE_SSL
}
#endif
log_verbose2("Sent %d", size);
/* size = _test_send_to_file(filename, bytes, n); */
#ifdef WIN32
if (size == INVALID_SOCKET)
if (WSAGetLastError() == WSAEWOULDBLOCK)
continue;
else
return herror_new("hsocket_nsend", HSOCKET_ERROR_SEND,
"Socket error: %d", errno);
#else
if (size == -1)
{
#ifdef HAVE_SSL
if (sock.ssl)
{
log_error1("Send error");
log_ssl_error(sock.ssl, size);
}
#endif
return herror_new("hsocket_nsend", HSOCKET_ERROR_SEND,
"Socket error: %d", errno);
}
#endif
n -= size;
total += size;
if (n <= 0)
break;
}
return H_OK;
}
/*--------------------------------------------------
FUNCTION: hsocket_send
----------------------------------------------------*/
herror_t
hsocket_send(hsocket_t sock, const char *str)
{
return hsocket_nsend(sock, str, strlen(str));
}
/*
return: -1 is error. read bytes otherwise
*/
herror_t
hsocket_read(hsocket_t sock, byte_t * buffer, int total, int force,
int *received)
{
int status;
int totalRead;
#ifdef WIN32
int wsa_error = 0;
#endif
totalRead = 0;
/*
log_verbose3("Entering hsocket_read(total=%d,force=%d)", total, force);
*/
do
{
#ifdef HAVE_SSL
if (sock.ssl)
{
struct timeval timeout;
int i = 0;
fd_set fds;
FD_ZERO(&fds);
FD_SET(sock.sock, &fds);
timeout.tv_sec = 10;
timeout.tv_usec = 0;
#ifdef WIN32
#else
fcntl(sock.sock, F_SETFL, O_NONBLOCK);
#endif
// log_verbose1("START READ LOOP");
// do{
// log_verbose2("DEBUG A %d",i);
status = SSL_read(sock.ssl, &buffer[totalRead], total - totalRead);
if (status < 1)
{
int ret = select(sock.sock + 1, &fds, NULL, NULL, &timeout);
// log_verbose2("DEBUG %d",ret);
#ifdef WIN32
if (ret == SOCKET_ERROR)
{
wsa_error = WSAGetLastError();
log_error2("WSAGetLastError()=%d", wsa_error);
return herror_new("hsocket_read", HSOCKET_ERROR_RECEIVE,
"Socket error: %d", errno);
}
#endif
if (ret == 0)
{
log_verbose1("Socket timeout");
return herror_new("hsocket_read", HSOCKET_SSL_CLOSE, "Timeout");
}
else
{
// log_verbose1("DEBUG C");
status = SSL_read(sock.ssl, &buffer[totalRead], total - totalRead);
}
// log_verbose3("DEBUG D char: %d status: %d",
// buffer[totalRead], SSL_get_error(sock.ssl, status));
}
// } while( SSL_get_error(sock.ssl, status) == SSL_ERROR_WANT_READ);
#ifdef WIN32
#else
fcntl(sock.sock, F_SETFL, 0);
#endif
}
else
{
#else // HAVE_SSL
{
#endif // HAVE_SSL
status = recv(sock.sock, &buffer[totalRead], total - totalRead, 0);
#ifdef WIN32
if (status == INVALID_SOCKET)
{
wsa_error = WSAGetLastError();
switch (wsa_error)
{
case WSAEWOULDBLOCK:
/* case WSAEALREADY: case WSAEINPROGRESS: */
continue;
default:
log_error2("WSAGetLastError()=%d", wsa_error);
return herror_new("hsocket_read", HSOCKET_ERROR_RECEIVE,
"Socket error: %d", errno);
}
}
}
#else
}
/*
switch (errno) {
case EWOULDBLOCK:
case EALREADY:
case EINPROGRESS:
return true;
}
*/
#ifdef HAVE_SSL
if (sock.ssl && status < 1)
{
// XXX I'm not sure this err_syscall is right here...
if (SSL_get_shutdown(sock.ssl) == SSL_RECEIVED_SHUTDOWN ||
SSL_get_error(sock.ssl, status) == SSL_ERROR_SYSCALL)
{
*received = NULL;;
return herror_new("hsocket_read", HSOCKET_SSL_CLOSE, "SSL Closed");
}
log_error2("Read error (%d)", status);
log_ssl_error(sock.ssl, status);
return herror_new("hsocket_read", HSOCKET_ERROR_RECEIVE, "SSL Error");
}
#endif
if (status == -1)
return herror_new("hsocket_read", HSOCKET_ERROR_RECEIVE,
"Socket error: %d", errno);
#endif
if (!force)
{
*received = status;
/*
log_verbose3("Leaving !force (received=%d)(status=%d)", *received,
status); */
return H_OK;
}
totalRead += status;
if (totalRead == total)
{
*received = totalRead;
/*
log_verbose4("Leaving totalRead == total
(received=%d)(status=%d)(totalRead=%d)", *received, status,
totalRead); */
return H_OK;
}
}
while (1);
}
herror_t
hsocket_block(hsocket_t sock, int block)
{
#ifdef WIN32
unsigned long iMode;
#endif
if (sock.sock <= 0)
return herror_new("hsocket_block", HSOCKET_ERROR_NOT_INITIALIZED,
"Called hsocket_listen() before initializing!");
#ifdef WIN32
/*#define HSOCKET_BLOCKMODE 0
#define HSOCKET_NONBLOCKMODE 1
*/
iMode = (block == 0) ? 1 : 0; /* Non block mode */
if (ioctlsocket(sock.sock, FIONBIO, (u_long FAR *) & iMode) ==
INVALID_SOCKET)
{
int err = WSAGetLastError();
log_error2("ioctlsocket error %d", err);
return herror_new("hsocket_block", HSOCKET_ERROR_IOCTL,
"Socket error: %d", err);
}
#else /* fcntl(sock, F_SETFL, O_NONBLOCK); */
/* TODO (#1#): check for *nix the non blocking sockets */
#endif
return H_OK;
}
|