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85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/*
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common.c - common functions for NSS lookups
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Copyright (C) 2006 West Consulting
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Copyright (C) 2006, 2007 Arthur de Jong
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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#include "config.h"
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#ifdef HAVE_STDINT_H
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#include <stdint.h>
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#endif /* HAVE_STDINT_H */
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#include <unistd.h>
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#include <stdio.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <nss.h>
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#include <string.h>
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#include "nslcd.h"
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#include "common.h"
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#include "common/tio.h"
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/* buffer sizes for I/O */
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#define READBUFFER_MINSIZE 1024
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#define READBUFFER_MAXSIZE 32*1024
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#define WRITEBUFFER_MINSIZE 32
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#define WRITEBUFFER_MAXSIZE 32
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/* returns a socket to the server or NULL on error (see errno),
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socket should be closed with fclose() */
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TFILE *nslcd_client_open()
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{
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int sock;
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struct sockaddr_un addr;
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struct timeval readtimeout,writetimeout;
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TFILE *fp;
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/* create a socket */
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if ( (sock=socket(PF_UNIX,SOCK_STREAM,0))<0 )
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return NULL;
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/* create socket address structure */
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memset(&addr,0,sizeof(struct sockaddr_un));
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addr.sun_family=AF_UNIX;
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strncpy(addr.sun_path,NSLCD_SOCKET,sizeof(addr.sun_path));
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addr.sun_path[sizeof(addr.sun_path)-1]='\0';
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/* connect to the socket */
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if (connect(sock,(struct sockaddr *)&addr,(socklen_t)sizeof(struct sockaddr_un))<0)
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{
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(void)close(sock);
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return NULL;
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}
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/* set the timeouts */
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readtimeout.tv_sec=20; /* looking up stuff may take some time */
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readtimeout.tv_usec=0;
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writetimeout.tv_sec=10; /* nslcd could be loaded with requests */
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writetimeout.tv_usec=0;
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/* create a stream object */
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if ((fp=tio_fdopen(sock,&readtimeout,&writetimeout,
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READBUFFER_MINSIZE,READBUFFER_MAXSIZE,
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WRITEBUFFER_MINSIZE,WRITEBUFFER_MAXSIZE))==NULL)
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{
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(void)close(sock);
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return NULL;
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}
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/* return the stream */
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return fp;
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}
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