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/*
* You must be VERY CAREFUL with this module. Note, this
* code is working in VERY diff. ways in forking vs. threading versions!!
*/
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include "sys.h"
#include "readcfg.h"
#include "bsy.h"
#include "ftnaddr.h"
#include "ftndom.h"
#include "sem.h"
#include "tools.h"
#include "iphdr.h"
#include "assert.h"
#include "readdir.h" /* for rmdir() */
#if defined(HAVE_THREADS) || defined(AMIGA)
static MUTEXSEM sem; /* =0 initializer fails for amiga. removed. useless anyway? */
#endif
typedef struct _BSY_ADDR BSY_ADDR;
struct _BSY_ADDR
{
BSY_ADDR *next;
FTN_ADDR fa;
bsy_t bt;
#ifndef UNIX
int h;
#endif
};
BSY_ADDR *bsy_list = 0;
void bsy_init (void)
{
InitSem (&sem);
}
void bsy_deinit (void)
{
CleanSem (&sem);
}
static BSY_ADDR *bsy_get_free_cell (void)
{
BSY_ADDR *lst;
for (lst = bsy_list; lst; lst = lst->next)
if (FA_ISNULL (&lst->fa))
break;
if (!lst)
{
lst = xalloc (sizeof (BSY_ADDR));
FA_ZERO (&lst->fa);
lst->next = bsy_list;
bsy_list = lst;
}
return lst;
}
int bsy_add (FTN_ADDR *fa0, bsy_t bt, BINKD_CONFIG *config)
{
char buf[MAXPATHLEN + 1];
int ok = 0;
ftnaddress_to_filename (buf, fa0, config);
LockSem (&sem);
if (*buf)
{
strnzcat (buf, bt == F_CSY ? ".csy" : ".bsy", sizeof (buf));
if (mkpath (buf) == -1)
Log (1, "mkpath('%s'): %s", buf, strerror (errno));
if (create_sem_file (buf, 5))
{
BSY_ADDR *new_bsy = bsy_get_free_cell ();
memcpy (&new_bsy->fa, fa0, sizeof (FTN_ADDR));
new_bsy->bt = bt;
#ifndef UNIX
new_bsy->h = open(buf, O_RDONLY|O_NOINHERIT);
if (new_bsy->h == -1)
Log (2, "Can't open %s: %s!", buf, strerror(errno));
#if defined(OS2)
else
DosSetFHState(new_bsy->h, OPEN_FLAGS_NOINHERIT);
#elif defined(EMX)
else
fcntl(new_bsy->h, F_SETFD, FD_CLOEXEC);
#endif
#endif
ok = 1;
}
}
ReleaseSem (&sem);
return ok;
}
/*
* Test a busy-flag. 1 -- free, 0 -- busy
*/
int bsy_test (FTN_ADDR *fa0, bsy_t bt, BINKD_CONFIG *config)
{
char buf[MAXPATHLEN + 1];
ftnaddress_to_filename (buf, fa0, config);
if (*buf)
{
strnzcat (buf, bt == F_CSY ? ".csy" : ".bsy", sizeof (buf));
if (mkpath (buf) == -1)
Log (1, "mkpath('%s'): %s", buf, strerror (errno));
if (access (buf, F_OK) == -1)
return 1;
}
return 0;
}
void bsy_remove (FTN_ADDR *fa0, bsy_t bt, BINKD_CONFIG *config)
{
char buf[MAXPATHLEN + 1], *p;
BSY_ADDR *bsy;
ftnaddress_to_filename (buf, fa0, config);
if (*buf)
{
strnzcat (buf, bt == F_CSY ? ".csy" : ".bsy", sizeof (buf));
LockSem (&sem);
for (bsy = bsy_list; bsy; bsy = bsy->next)
{
if (!ftnaddress_cmp (&bsy->fa, fa0) && bsy->bt == bt)
{
#ifndef UNIX
if (bsy->h != -1)
if (close(bsy->h))
Log (2, "Can't close %s (handle %d): %s!", buf, bsy->h, strerror(errno));
#endif
delete (buf);
/* remove empty point directory */
if (config->deletedirs)
{
FTN_DOMAIN *d;
if (fa0->p != 0 && (p = last_slash(buf)) != NULL)
{
*p = '\0';
rmdir(buf);
}
/* remove empty zone directory */
d = get_domain_info (fa0->domain, config->pDomains.first);
if (d && (fa0->z != d->z[0]) && (p = last_slash(buf)) != NULL)
{
*p = '\0';
rmdir(buf);
}
}
FA_ZERO (&bsy->fa);
break;
}
}
ReleaseSem (&sem);
}
}
/*
* For exitlist...
*/
void bsy_remove_all (BINKD_CONFIG *config)
{
char buf[MAXPATHLEN + 1], *p;
BSY_ADDR *bsy;
for (bsy = bsy_list; bsy; bsy = bsy->next)
{
if (FA_ISNULL (&bsy->fa)) continue; /* free cell */
ftnaddress_to_filename (buf, &bsy->fa, config);
if (*buf)
{
strnzcat (buf, bsy->bt == F_CSY ? ".csy" : ".bsy", sizeof (buf));
#ifndef UNIX
if (bsy->h != -1)
if (close(bsy->h))
Log (2, "Can't close %s (handle %d): %s!", buf, bsy->h, strerror(errno));
#endif
delete (buf);
/* remove empty point directory */
if (config->deletedirs && bsy->fa.p != 0 && (p = last_slash(buf)) != NULL)
{
*p = '\0';
rmdir(buf);
}
FA_ZERO (&bsy->fa);
}
}
Log (6, "bsy_remove_all: done");
bsy_deinit ();
}
/*
* Touchs all our .bsy's if needed
*/
void bsy_touch (BINKD_CONFIG *config)
{
static time_t last_touch = 0;
LockSem (&sem);
if (time (0) - last_touch > BSY_TOUCH_DELAY)
{
BSY_ADDR *bsy;
char buf[MAXPATHLEN + 1];
for (bsy = bsy_list; bsy; bsy = bsy->next)
{
ftnaddress_to_filename (buf, &bsy->fa, config);
if (*buf)
{
strnzcat (buf, bsy->bt == F_CSY ? ".csy" : ".bsy", sizeof (buf));
if (touch (buf, time (0)) == -1)
Log (1, "touch %s: %s", buf, strerror (errno));
else
Log (6, "touched %s", buf);
}
}
last_touch = time (0);
}
ReleaseSem (&sem);
}
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