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static const char rcsid[]="$Id: msocket.c,v 1.2 2003/10/10 09:06:53 blong Exp $";
/*
* Copyright (C) 1998 Michael R. Elkins <me@cs.hmc.edu>
* Copyright (C) 1998 Brandon C. Long <blong@fiction.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Copied from mutt 0.95 */
#include "gbuffy.h"
#include "msocket.h"
#include <unistd.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#ifdef HAVE_SSL
#include <openssl/ssl.h>
#endif
/* support for multiple socket connections */
static CONNECTION *Connections = NULL;
/* simple read buffering to speed things up. */
int msocket_readchar (CONNECTION *conn, char *c)
{
if (conn->bufpos >= conn->available)
{
#ifdef HAVE_SSL
if (conn->ssl_mode) {
conn->available = SSL_read(conn->ssl, conn->inbuf, LONG_STRING-1);
} else {
#endif
conn->available = read (conn->fd, conn->inbuf, LONG_STRING-1);
#ifdef HAVE_SSL
}
#endif
conn->bufpos = 0;
if (conn->available <= 0)
{
#ifdef DEBUG
fflush (debugfile);
#endif
return conn->available; /* returns 0 for EOF or -1 for other error */
}
}
if (conn->available > LONG_STRING || conn->bufpos > LONG_STRING)
return -1;
*c = conn->inbuf[conn->bufpos];
conn->bufpos++;
return 1;
}
int msocket_read_line (char *buf, size_t buflen, CONNECTION *conn)
{
char ch;
int i;
for (i = 0; i < buflen; i++)
{
if (msocket_readchar (conn, &ch) != 1)
return (-1);
if (ch == '\n')
break;
buf[i] = ch;
}
if (i)
buf[i-1] = 0;
else
buf[i] = 0;
return (i + 1);
}
int msocket_read_line_d (char *buf, size_t buflen, CONNECTION *conn)
{
int r = msocket_read_line (buf, buflen, conn);
dprint (1,(debugfile,"msocket_read_line_d():%s\n", buf));
return r;
}
int msocket_write (CONNECTION *conn, const char *buf)
{
dprint (1,(debugfile,"msocket_write():%s", buf));
#ifdef HAVE_SSL
if (conn->ssl_mode) {
return SSL_write(conn->ssl, buf, strlen(buf));
} else {
#endif
return (write (conn->fd, buf, strlen (buf)));
#ifdef HAVE_SSL
}
#endif
}
CONNECTION *msocket_select_connection (char *host, int port, int flags)
{
CONNECTION *conn;
if (flags != M_SOCKET_NEW)
{
conn = Connections;
while (conn)
{
if (!strcmp (host, conn->server) && (port == conn->port))
return conn;
conn = conn->next;
}
}
conn = (CONNECTION *) safe_calloc (1, sizeof (CONNECTION));
conn->bufpos = 0;
conn->available = 0;
conn->uses = 0;
conn->server = safe_strdup (host);
conn->port = port;
conn->ssl = NULL;
conn->ssl_mode = 0;
conn->next = Connections;
Connections = conn;
return conn;
}
int msocket_open_connection (CONNECTION *conn)
{
struct sockaddr_in sin;
struct hostent *he;
#ifdef HAVE_SSL
SSL_CTX *ssl_ctx;
SSL *ssl;
int retval;
#endif
memset (&sin, 0, sizeof (sin));
sin.sin_port = htons (conn->port);
sin.sin_family = AF_INET;
if ((he = gethostbyname (conn->server)) == NULL)
{
perror (conn->server);
return (-1);
}
memcpy (&sin.sin_addr, he->h_addr_list[0], he->h_length);
if ((conn->fd = socket (AF_INET, SOCK_STREAM, IPPROTO_IP)) < 0)
{
/* mutt_perror ("socket"); */
return (-1);
}
/* mutt_message (_("Connecting to %s..."), conn->server); */
if (connect (conn->fd, (struct sockaddr *) &sin, sizeof (sin)) < 0)
{
/* mutt_perror ("connect"); */
close (conn->fd);
}
#ifdef HAVE_SSL
if (conn->ssl_mode) {
SSL_library_init();
ssl_ctx = SSL_CTX_new(SSLv23_client_method());
ssl = SSL_new(ssl_ctx);
if (!SSL_set_fd(ssl, conn->fd)) {
close(conn->fd);
return -1;
}
if ((retval = SSL_connect(ssl)) < 1) {
printf("Failed connecting to TLS server: %d\n", SSL_get_error(ssl, retval));
close(conn->fd);
return -1;
}
conn->ssl = ssl;
}
#endif
return 0;
}
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