view src/outgoing.c @ 165:8ea6b5ddc5a5 noffle

[svn] * src/lock.h,src/lock.c,src/noffle.c: Add lazy lock release. Only release the lock and close the databases if (a) another process signals us SIGUSR1 indicating it wants the lock, or (b) it is explicitly requested by a call to new function Lock_syncDatabases(). When waiting for the lock, SIGUSR1 the holding process every second. This is all an attempt to minimise the number of times we need to close and open the database. When (ha!) the database is replaced by something that can handle multiple simultaneous writers (with appropriate locking) this won't be necessary.
author bears
date Thu, 25 Jan 2001 13:38:31 +0000 (2001-01-25)
parents 125d79c9e586
children fed1334d766b
line wrap: on
line source
/*
  outgoing.c

  $Id: outgoing.c 60 2000-05-09 22:28:38Z uh1763 $
*/

#if HAVE_CONFIG_H
#include <config.h>
#endif

#include "outgoing.h"

#include <stdio.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>

#if TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else
#if HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#endif

#include <unistd.h>
#include "configfile.h"
#include "log.h"
#include "util.h"
#include "portable.h"

struct Outgoing
{
    DIR *dir;
    Str serv;
} outgoing = { NULL, "" };

static void
fileOutgoing( Str file, const char *serv, const char *msgId )
{
    snprintf( file, MAXCHAR, "%s/outgoing/%s/%s",
              Cfg_spoolDir(), serv, msgId );
}

static void
createDir( const char *serv )
{
    Str dir;
    int r;

    snprintf( dir, MAXCHAR, "%s/outgoing/%s", Cfg_spoolDir(), serv );
    r = mkdir( dir, 0755 );
    if ( r != 0 )
        Log_dbg( "mkdir: %s", strerror( errno ) );
}

Bool
Out_add( const char *serv, const char *msgId, const DynStr *artTxt )
{
    Str file;
    FILE *f;

    fileOutgoing( file, serv, msgId );
    if ( ! ( f = fopen( file, "w" ) ) )
    {
        createDir( serv );
        if ( ! ( f = fopen( file, "w" ) ) )
        {
            Log_err( "Cannot open %s", file );
            return FALSE;
        }
    }
    fprintf( f, "%s", DynStr_str( artTxt ) );
    fclose( f );
    return TRUE;
}

Bool
Out_first( const char *serv, Str msgId, DynStr *artTxt )
{
    Str file;
    
    snprintf( file, MAXCHAR, "%s/outgoing/%s", Cfg_spoolDir(), serv );
    if ( ! ( outgoing.dir = opendir( file ) ) )
    {
        Log_dbg( "Cannot open %s", file );
        return FALSE;
    }
    Utl_cpyStr( outgoing.serv, serv );
    Out_next( NULL, NULL ); /* "."  */
    Out_next( NULL, NULL ); /* ".." */
    return Out_next( msgId, artTxt );
}

Bool
Out_next( Str msgId, DynStr *artTxt )
{
    struct dirent *d;
    FILE *f;
    Str file, line;

    ASSERT( outgoing.dir );
    if ( ! ( d = readdir( outgoing.dir ) ) )
    {
        closedir( outgoing.dir );
        outgoing.dir = NULL;
        return FALSE;
    }
    if ( artTxt == NULL )
        return ( d->d_name != NULL );
    fileOutgoing( file, outgoing.serv, d->d_name );
    if ( ! ( f = fopen( file, "r" ) ) )
    {
        Log_err( "Cannot open %s for read", file );
        return FALSE;
    }
    DynStr_clear( artTxt );
    while ( fgets( line, MAXCHAR, f ) )
        DynStr_app( artTxt, line );
    Utl_cpyStr( msgId, d->d_name );
    fclose( f );
    return TRUE;
}

void
Out_remove( const char *serv, const char *msgId )
{
    Str file;

    fileOutgoing( file, serv, msgId );
    if ( unlink( file ) != 0 )
        Log_err( "Cannot remove %s", file );
}

Bool
Out_find( const char *msgId, Str server )
{
    Str servdir;
    DIR *d;
    struct dirent *entry;
    Bool res;
    
    
    snprintf( servdir, MAXCHAR, "%s/outgoing", Cfg_spoolDir() );
    if ( ! ( d = opendir( servdir ) ) )
    {
        Log_dbg( "Cannot open %s", servdir );
        return FALSE;
    }

    readdir( d );	/* '.' */
    readdir( d );	/* '..' */

    res = FALSE;
    while ( ! res && ( entry = readdir( d ) ) != NULL )
    {
	Str file;
	struct stat s;

	fileOutgoing( file, entry->d_name, msgId );
	if ( stat( file, &s ) == 0 )
	{
	    res = TRUE;
	    Utl_cpyStr( server, entry->d_name );
	}
    }

    closedir( d );
    return res;
}