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/* $Id: expire.c,v 1.5 2002/11/06 12:07:59 in2 Exp $ */
/* 自動砍信工具程式 */
#include "bbs.h"
#define QCAST int (*)(const void *, const void *)
#define DEF_DAYS 50
#define DEF_MAXP 2000
#define DEF_MINP 300
#define EXPIRE_CONF BBSHOME "/etc/expire.conf"
extern boardheader_t *bcache;
char bpath[256];
struct life
{
char bname[16]; /* board ID */
int days; /* expired days */
int maxp; /* max post */
int minp; /* min post */
};
typedef struct life life;
void
expire(brd)
life *brd;
{
fileheader_t head;
struct stat state;
char lockfile[128], tmpfile[128], bakfile[128];
char fpath[128], index[128], *fname;
int total, bid;
int fd, fdr, fdw, done, keep;
int duetime, ftime;
printf("%s\n", brd->bname);
if((bid = getbnum(brd->bname)) == 0 ||
strcmp(brd->bname, bcache[bid-1].brdname))
{
printf("no such board?: %s\n", brd->bname);
return;
}
#ifdef VERBOSE
if (brd->days < 1)
{
printf(":Err: expire time must more than 1 day.\n");
return;
}
else if (brd->maxp < 100)
{
printf(":Err: maxmum posts number must more than 100.\n");
return;
}
#endif
sprintf(index, "%s/%s/.DIR", bpath, brd->bname);
sprintf(lockfile, "%s.lock", index);
if ((fd = open(lockfile, O_RDWR | O_CREAT | O_APPEND, 0644)) == -1)
return;
flock(fd, LOCK_EX);
strcpy(fpath, index);
fname = (char *) strrchr(fpath, '.');
duetime = time(NULL) - brd->days * 24 * 60 * 60;
done = 0;
if ((fdr = open(index, O_RDONLY, 0)) > 0)
{
fstat(fdr, &state);
total = state.st_size / sizeof(head);
sprintf(tmpfile, "%s.new", index);
unlink(tmpfile);
if ((fdw = open(tmpfile, O_WRONLY | O_CREAT | O_EXCL, 0644)) > 0)
{
while (read(fdr, &head, sizeof head) == sizeof head)
{
done = 1;
ftime = atoi(head.filename + 2);
if (head.owner[0] == '-')
keep = 0;
else if (head.filemode & FILE_MARKED || total <= brd->minp)
keep = 1;
else if (ftime < duetime || total > brd->maxp)
keep = 0;
else
keep = 1;
if (keep)
{
if (write(fdw, (char *)&head, sizeof head) == -1)
{
done = 0;
break;
}
}
else
{
strcpy(fname, head.filename);
unlink(fpath);
printf("\t%s\n", fname);
total--;
}
}
close(fdw);
}
close(fdr);
}
if (done)
{
sprintf(bakfile, "%s.old", index);
if (rename(index, bakfile) != -1)
{
rename(tmpfile, index);
touchbtotal(bid);
}
}
flock(fd, LOCK_UN);
close(fd);
}
int main(argc, argv)
char *argv[];
{
FILE *fin;
int number, count;
life db, table[MAX_BOARD], *key;
struct dirent *de;
DIR *dirp;
int i;
char *ptr, *bname, buf[256];
char dirs[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p',
'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l',
'z', 'x', 'c', 'v', 'b', 'n', 'm',
'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P',
'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L',
'Z', 'X', 'C', 'V', 'B', 'N', 'M', NULL};
resolve_boards();
db.days = ((argc > 1) && (number = atoi(argv[1])) > 0) ? number : DEF_DAYS;
db.maxp = ((argc > 2) && (number = atoi(argv[2])) > 0) ? number : DEF_MAXP;
db.minp = ((argc > 3) && (number = atoi(argv[3])) > 0) ? number : DEF_MINP;
/* --------------- */
/* load expire.ctl */
/* --------------- */
count = 0;
if((fin = fopen(EXPIRE_CONF, "r")))
{
while (fgets(buf, 256, fin))
{
if (buf[0] == '#')
continue;
bname = (char *) strtok(buf, " \t\r\n");
if (bname && *bname)
{
ptr = (char *) strtok(NULL, " \t\r\n");
if (ptr && (number = atoi(ptr)) > 0)
{
key = &(table[count++]);
strcpy(key->bname, bname);
key->days = number;
key->maxp = db.maxp;
key->minp = db.minp;
ptr = (char *) strtok(NULL, " \t\r\n");
if (ptr && (number = atoi(ptr)) > 0)
{
key->maxp = number;
ptr = (char *) strtok(NULL, " \t\r\n");
if (ptr && (number = atoi(ptr)) > 0)
{
key->minp = number;
}
}
}
}
}
fclose(fin);
}
if (count > 1)
{
qsort(table, count, sizeof(life), (QCAST)strcasecmp);
}
/* ---------------- */
/* visit all boards */
/* ---------------- */
for( i = 0 ; dirs[i] != NULL ; ++i ){
sprintf(bpath, BBSHOME "/boards/%c", dirs[i]);
if (!(dirp = opendir(bpath))){
printf(":Err: unable to open %s\n", bpath);
continue;
}
while((de = readdir(dirp))){
ptr = de->d_name;
if (ptr[0] > ' ' && ptr[0] != '.'){
if (count)
key = (life *) bsearch(ptr, table, count, sizeof(life), (QCAST)strcasecmp);
else
key = NULL;
if (!key)
key = &db;
strcpy(key->bname, ptr);
expire(key);
}
}
closedir(dirp);
}
return 0;
}
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