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|
/* $Id: cache.c,v 1.25 2002/05/13 10:00:17 ptt Exp $ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
#include <errno.h>
#include <time.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/sem.h>
#ifdef __FreeBSD__
#include <machine/param.h>
#endif
#include "config.h"
#include "pttstruct.h"
#include "common.h"
#include "perm.h"
#include "modes.h"
#include "proto.h"
#ifndef __FreeBSD__
union semun {
int val; /* value for SETVAL */
struct semid_ds *buf; /* buffer for IPC_STAT, IPC_SET */
unsigned short int *array; /* array for GETALL, SETALL */
struct seminfo *__buf; /* buffer for IPC_INFO */
};
#endif
extern time_t now;
int fcache_semid;
/* the reason for "safe_sleep" is that we may call sleep during
SIGALRM handler routine, while SIGALRM is blocked.
if we use the original sleep, we'll never wake up. */
unsigned int safe_sleep(unsigned int seconds) {
/* jochang sleep有問題時用*/
sigset_t set,oldset;
sigemptyset(&set);
sigprocmask(SIG_BLOCK, &set, &oldset);
if(sigismember(&oldset, SIGALRM)) {
unsigned long retv;
#if !defined(_BBS_UTIL_C_)
log_usies("SAFE_SLEEP ", "avoid hang");
#endif
sigemptyset(&set);
sigaddset(&set,SIGALRM);
sigprocmask(SIG_UNBLOCK,&set,NULL);
retv=sleep(seconds);
sigprocmask(SIG_BLOCK,&set,NULL);
return retv;
}
return sleep(seconds);
}
#if defined(_BBS_UTIL_C_)
static void setapath(char *buf, char *boardname) {
sprintf(buf, "man/boards/%c/%s", boardname[0], boardname);
}
static char *str_dotdir = ".DIR";
static void setadir(char *buf, char *path) {
sprintf(buf, "%s/%s", path, str_dotdir);
}
#endif
static void attach_err(int shmkey, char *name) {
fprintf(stderr, "[%s error] key = %x\n", name, shmkey);
fprintf(stderr, "errno = %d: %s\n", errno, strerror(errno));
exit(1);
}
static void *attach_shm(int shmkey, int shmsize) {
void *shmptr;
int shmid;
char *empty_addr;
/* set up one page in-accessible -- jochang */
{
int fd = open("/dev/zero",O_RDONLY);
int size = ((shmsize + 4095) / 4096) * 4096;
munmap(
(empty_addr=mmap(0,4096+size,PROT_NONE,MAP_PRIVATE,fd,0))+4096
,size);
close(fd);
}
shmid = shmget(shmkey, shmsize, 0);
if(shmid < 0) {
shmid = shmget(shmkey, shmsize, IPC_CREAT | 0600);
if(shmid < 0)
attach_err(shmkey, "shmget");
shmptr = (void *)shmat(shmid, NULL, 0);
if(shmptr == (void *)-1)
attach_err(shmkey, "shmat");
} else {
shmptr = (void *)shmat(shmid, NULL, 0);
if(shmptr == (void *)-1)
attach_err(shmkey, "shmat");
}
/* unmap the page -- jochang */
{
munmap(empty_addr,4096);
}
return shmptr;
}
#define SEM_FLG 0600 /* semaphore mode */
/* ----------------------------------------------------- */
/* semaphore : for critical section */
/* ----------------------------------------------------- */
void sem_init(int semkey,int *semid) {
union semun s;
s.val=1;
*semid = semget(semkey, 1, 0);
if(*semid == -1) {
*semid = semget(semkey, 1, IPC_CREAT | SEM_FLG);
if(*semid == -1)
attach_err(semkey, "semget");
semctl(*semid, 0, SETVAL, s);
}
}
void sem_lock(int op,int semid) {
struct sembuf sops;
sops.sem_num = 0;
sops.sem_flg = SEM_UNDO;
sops.sem_op = op;
semop(semid, &sops, 1);
}
/* uhash *******************************************/
/* the design is this:
we use another stand-alone program to create and load data into the hash.
(that program could be run in rc-scripts or something like that)
after loading completes, the stand-alone program sets loaded to 1 and exits.
the bbs exits if it can't attach to the shared memory or
the hash is not loaded yet.
*/
uhash_t *uhash;
/* attach_uhash should be called before using uhash */
void attach_uhash() {
uhash = attach_shm(UHASH_KEY, sizeof(*uhash));
if(!uhash->loaded) /* assume fresh shared memory is zeroed */
exit(1);
}
void add_to_uhash(int n, char *id) {
int *p, h = StringHash(id);
int times;
strcpy(uhash->userid[n], id);
p = &(uhash->hash_head[h]);
for( times = 0 ; times < MAX_USERS && *p != -1 ; ++times )
p = &(uhash->next_in_hash[*p]);
if( times == MAX_USERS )
abort_bbs(0);
uhash->next_in_hash[*p = n] = -1;
}
/* note: after remove_from_uhash(), you should add_to_uhash()
(likely with a different name) */
void remove_from_uhash(int n) {
int h = StringHash(uhash->userid[n]);
int *p = &(uhash->hash_head[h]);
int times;
for( times = 0 ; times < MAX_USERS && (*p != -1 && *p != n); ++times )
p = &(uhash->next_in_hash[*p]);
if( times == MAX_USERS )
abort_bbs(0);
if(*p == n)
*p = uhash->next_in_hash[n];
}
int setumoney(int uid, int money) {
uhash->money[uid-1]=money;
passwd_update_money(uid);
return uhash->money[uid-1];
}
int deumoney(int uid, int money) {
if(money<0 && uhash->money[uid-1]<-money)
return setumoney(uid,0);
else
return setumoney(uid,uhash->money[uid-1]+money);
}
int demoney(int money) {
extern int usernum;
return deumoney(usernum,money);
}
int moneyof(int uid){ /* ptt 改進金錢處理效率 */
return uhash->money[uid-1];
}
int searchuser(char *userid) {
int h, p, times;
h = StringHash(userid);
p = uhash->hash_head[h];
for( times = 0 ; times < MAX_USERS && p != -1 ; ++times ){
if(strcasecmp(uhash->userid[p],userid) == 0) {
strcpy(userid,uhash->userid[p]);
return p + 1;
}
p = uhash->next_in_hash[p];
}
return 0;
}
#if !defined(_BBS_UTIL_C_)
extern userec_t xuser;
int getuser(char *userid) {
int uid;
if((uid = searchuser(userid)))
passwd_query(uid, &xuser);
return uid;
}
char *getuserid(int num) {
if(--num >= 0 && num < MAX_USERS)
return ((char *) uhash->userid[num]);
return NULL;
}
void setuserid(int num, char *userid) {
if(num > 0 && num <= MAX_USERS) {
if(num > uhash->number)
uhash->number = num;
else
remove_from_uhash(num-1);
add_to_uhash(num-1,userid);
}
}
/* 0 ==> 找過期帳號 */
/* 1 ==> 建立新帳號 */
/* should do it by searching "" in the hash */
int searchnewuser(int mode) {
register int i, num;
num = uhash->number;
i = 0;
/* 為什麼這邊不用 hash table 去找而要用 linear search? */
while(i < num) {
if(!uhash->userid[i++][0])
return i;
}
if(mode && (num < MAX_USERS))
return num + 1;
return 0;
}
char *u_namearray(char buf[][IDLEN + 1], int *pnum, char *tag) {
register struct uhash_t *reg_ushm = uhash;
register char *ptr, tmp;
register int n, total;
char tagbuf[STRLEN];
int ch, ch2, num;
if(*tag == '\0') {
*pnum = reg_ushm->number;
return reg_ushm->userid[0];
}
for(n = 0; tag[n]; n++)
tagbuf[n] = chartoupper(tag[n]);
tagbuf[n] = '\0';
ch = tagbuf[0];
ch2 = ch - 'A' + 'a';
total = reg_ushm->number;
for(n = num = 0; n < total; n++) {
ptr = reg_ushm->userid[n];
tmp = *ptr;
if(tmp == ch || tmp == ch2) {
if(chkstr(tag, tagbuf, ptr))
strcpy(buf[num++], ptr);
}
}
*pnum = num;
return buf[0];
}
#endif
/*-------------------------------------------------------*/
/* .UTMP cache */
/*-------------------------------------------------------*/
struct utmpfile_t *utmpshm=NULL;
void resolve_utmp() {
if(utmpshm == NULL) {
utmpshm = attach_shm(UTMPSHM_KEY, sizeof(*utmpshm));
}
}
userinfo_t *currutmp = NULL;
#if !defined(_BBS_UTIL_C_)
extern unsigned int currstat;
extern userec_t cuser;
void setutmpmode(int mode) {
if(currstat != mode)
currutmp->mode = currstat = mode;
/* 追蹤使用者 */
if(HAS_PERM(PERM_LOGUSER)) {
char msg[200];
sprintf(msg, "%s setutmpmode to %s(%d) at %s",
cuser.userid, modestring(currutmp, 0), mode, Cdate(&now));
log_user(msg);
}
}
#endif
static int cmputmpuserid(const void *i, const void *j){
return strcasecmp((*((userinfo_t**)i))->userid, (*((userinfo_t**)j))->userid);
}
static int cmputmpmode(const void *i, const void *j){
return (*((userinfo_t**)i))->mode-(*((userinfo_t**)j))->mode;
}
static int cmputmpidle(const void *i, const void *j){
return (*((userinfo_t**)i))->lastact-(*((userinfo_t**)j))->lastact;
}
static int cmputmpfrom(const void *i, const void *j){
return strcasecmp((*((userinfo_t**)i))->from, (*((userinfo_t**)j))->from);
}
static int cmputmpfive(const void *i, const void *j){
int type;
if((type=(*((userinfo_t**)j))->five_win - (*((userinfo_t**)i))->five_win))
return type;
if((type=(*((userinfo_t**)i))->five_lose - (*((userinfo_t**)j))->five_lose))
return type;
return (*((userinfo_t**)i))->five_tie-(*((userinfo_t**)j))->five_tie;
}
static int cmputmpsex(const void *i, const void *j)
{
static int ladyfirst[]={1,0,1,0,1,0,3,3};
return ladyfirst[(*(userinfo_t**)i)->sex&07]-
ladyfirst[(*(userinfo_t**)j)->sex&07];
}
static int cmputmppid(const void *i, const void *j){
return (*((userinfo_t**)i))->pid-(*((userinfo_t**)j))->pid;
}
static int cmputmpuid(const void *i, const void *j){
return (*((userinfo_t**)i))->uid-(*((userinfo_t**)j))->uid;
}
void sort_utmp()
{
int count, i, ns;
userinfo_t *uentp;
now=time(0);
if(now-utmpshm->uptime<60 && (now==utmpshm->uptime || utmpshm->busystate))
return; /* lazy sort */
utmpshm->busystate=1;
utmpshm->uptime = now;
ns=(utmpshm->currsorted?0:1);
for(uentp = &utmpshm->uinfo[0], count=0, i=0;
i< USHM_SIZE; i++,uentp = &utmpshm->uinfo[i])
{
if(uentp->pid)
{
if(uentp->sex<0 || uentp->sex>7)
memset(uentp, 0, sizeof(userinfo_t));
else
utmpshm->sorted[ns][0][count++]= uentp;
}
}
utmpshm->number = count;
qsort(utmpshm->sorted[ns][0],count,sizeof(userinfo_t*),cmputmpuserid);
memcpy(utmpshm->sorted[ns][1],utmpshm->sorted[ns][0],
sizeof(userinfo_t *)*count);
memcpy(utmpshm->sorted[ns][2],utmpshm->sorted[ns][0],
sizeof(userinfo_t *)*count);
memcpy(utmpshm->sorted[ns][3],utmpshm->sorted[ns][0],
sizeof(userinfo_t *)*count);
memcpy(utmpshm->sorted[ns][4],utmpshm->sorted[ns][0],
sizeof(userinfo_t *)*count);
memcpy(utmpshm->sorted[ns][5],utmpshm->sorted[ns][0],
sizeof(userinfo_t *)*count);
memcpy(utmpshm->sorted[ns][6],utmpshm->sorted[ns][0],
sizeof(userinfo_t *)*count);
memcpy(utmpshm->sorted[ns][7],utmpshm->sorted[ns][0],
sizeof(userinfo_t *)*count);
qsort(utmpshm->sorted[ns][1], count, sizeof(userinfo_t *), cmputmpmode );
qsort(utmpshm->sorted[ns][2], count, sizeof(userinfo_t *), cmputmpidle );
qsort(utmpshm->sorted[ns][3], count, sizeof(userinfo_t *), cmputmpfrom );
qsort(utmpshm->sorted[ns][4], count, sizeof(userinfo_t *), cmputmpfive );
qsort(utmpshm->sorted[ns][5], count, sizeof(userinfo_t *), cmputmpsex );
qsort(utmpshm->sorted[ns][6], count, sizeof(userinfo_t *), cmputmpuid );
qsort(utmpshm->sorted[ns][7], count, sizeof(userinfo_t *), cmputmppid );
utmpshm->currsorted=ns;
utmpshm->busystate=0;
}
// Ptt:這邊加入hash觀念 找空的utmp
void getnewutmpent(userinfo_t *up) {
extern int errno;
register int i, p ;
register userinfo_t *uentp;
for(i = 0, p=StringHash(up->userid)%USHM_SIZE; i < USHM_SIZE; i++, p++) {
if(p==USHM_SIZE) p=0;
uentp = &(utmpshm->uinfo[p]);
if(!(uentp->pid)) {
memcpy(uentp, up, sizeof(userinfo_t));
currutmp = uentp;
sort_utmp();
return;
}
}
exit(1);
}
int apply_ulist(int (*fptr)(userinfo_t *)) {
register userinfo_t *uentp;
register int i, state;
for(i = 0; i < USHM_SIZE; i++) {
uentp = &(utmpshm->uinfo[i]);
if(uentp->pid && (PERM_HIDE(currutmp) || !PERM_HIDE(uentp)))
if((state = (*fptr) (uentp)))
return state;
}
return 0;
}
userinfo_t *search_ulist(int uid) {
return search_ulistn(uid,1);
}
#if !defined(_BBS_UTIL_C_)
extern int usernum;
userinfo_t *search_ulist_pid(int pid) {
register int i=0, j, start = 0, end = utmpshm->number - 1;
register userinfo_t **ulist;
ulist=utmpshm->sorted[utmpshm->currsorted][7];
for(i=((start+end)/2); ;i=(start+end)/2)
{
j=pid-ulist[i]->pid;
if(!j)
{
return (userinfo_t *) (ulist[i]);
}
if(end==start)
{
break;
}
else if(i==start)
{
i=end;
start=end;
}
else if(j>0) start = i;
else end = i;
}
return 0;
}
userinfo_t *search_ulistn(int uid, int unum) {
register int i=0, j, start = 0, end = utmpshm->number - 1;
register userinfo_t **ulist;
ulist=utmpshm->sorted[utmpshm->currsorted][6];
for(i=((start+end)/2); ;i=(start+end)/2)
{
j= uid - ulist[i]->uid;
if(!j)
{
for(;i>0 && uid==ulist[i-1]->uid;i--);/* 指到第一筆 */
if(uid==ulist[i+unum-1]->uid)
return (userinfo_t *) (ulist[i+unum-1]);
break; /* 超過範圍 */
}
if(end==start)
{
break;
}
else if(i==start)
{
i=end;
start=end;
}
else if(j>0) start = i;
else end = i;
}
return 0;
}
int count_logins(int uid, int show) {
register int i=0, j, start = 0, end = utmpshm->number - 1, count;
register userinfo_t **ulist;
ulist=utmpshm->sorted[utmpshm->currsorted][6];
for(i=((start+end)/2); ;i=(start+end)/2)
{
j = uid-ulist[i]->uid;
if(!j)
{
for(;i>0 && uid==ulist[i-1]->uid;i--);/* 指到第一筆 */
for(count=0;uid==ulist[i+count]->uid;count++)
{
if(show)
prints("(%d) 目前狀態為: %-17.16s(來自 %s)\n",
count+1, modestring(ulist[i+count], 0),
ulist[i+count]->from);
}
return count;
}
if(end==start)
{
break;
}
else if(i==start)
{
i=end;
start=end;
}
else if(j>0) start = i;
else end = i;
}
return 0;
}
void purge_utmp(userinfo_t *uentp) {
logout_friend_online(uentp);
memset(uentp, 0, sizeof(userinfo_t));
}
#endif
/*-------------------------------------------------------*/
/* .BOARDS cache */
/*-------------------------------------------------------*/
extern char *fn_board;
extern int currbid;
bcache_t *brdshm;
boardheader_t *bcache;
void touchdircache(int bid)
{
int *i= (int *)&brdshm->dircache[bid - 1][0].filename[0];
*i=0;
}
void load_fileheader_cache(int bid, char *direct)
{
int num=getbtotal(bid);
int n = num-DIRCACHESIZE+1;
if (brdshm->busystate!=1 && brdshm->busystate_b[bid-1]!=1)
{
brdshm->busystate_b[bid-1] = 1;
get_records(direct, brdshm->dircache[bid - 1] ,
sizeof(fileheader_t),n<1?1:n, DIRCACHESIZE);
brdshm->busystate_b[bid-1] = 0;
}
else
{safe_sleep(1);}
}
int get_fileheader_cache(int bid, char *direct, fileheader_t *headers,
int recbase, int nlines)
{
int ret, n,num;
num=getbtotal(bid);
ret = num-recbase+1,
n = (num - DIRCACHESIZE+1);
if(brdshm->dircache[bid - 1][0].filename[0]=='\0')
load_fileheader_cache(bid, direct);
if (n<1)
n=recbase-1;
else
n=recbase-n;
if(n<0) n=0;
if (ret>nlines) ret=nlines;
memcpy(headers, &(brdshm->dircache[bid - 1][n]),sizeof(fileheader_t)*ret);
return ret;
}
static int cmpboardname(boardheader_t **brd, boardheader_t **tmp) {
return strcasecmp((*brd)->brdname, (*tmp)->brdname);
}
static int cmpboardclass(boardheader_t **brd, boardheader_t **tmp) {
return (strncmp((*brd)->title, (*tmp)->title, 4)<<8)+
strcasecmp((*brd)->brdname, (*tmp)->brdname);
}
static void sort_bcache(){
int i;/*critical section 不能單獨呼叫 呼叫reload_bcache or reset_board */
for(i=0;i<brdshm->number;i++)
{
brdshm->sorted[1][i]=brdshm->sorted[0][i]=&bcache[i];
}
qsort(brdshm->sorted[0], brdshm->number, sizeof(boardheader_t *),
(QCAST)cmpboardname);
qsort(brdshm->sorted[1], brdshm->number, sizeof(boardheader_t *),
(QCAST)cmpboardclass);
}
static void reload_bcache() {
if(brdshm->busystate) {
safe_sleep(1);
}
#if !defined(_BBS_UTIL_C_)
else {
int fd,i;
brdshm->busystate = 1;
if((fd = open(fn_board, O_RDONLY)) > 0) {
brdshm->number =
read(fd, bcache, MAX_BOARD * sizeof(boardheader_t)) /
sizeof(boardheader_t);
close(fd);
}
memset(brdshm->lastposttime, 0, MAX_BOARD * sizeof(time_t));
/* 等所有 boards 資料更新後再設定 uptime */
brdshm->uptime = brdshm->touchtime;
log_usies("CACHE", "reload bcache");
sort_bcache();
for(i=0;i<brdshm->number;i++)
{
bcache[i].firstchild[0]=NULL;
bcache[i].firstchild[1]=NULL;
}
brdshm->busystate = 0;
}
#endif
}
int numboards = -1;
void resolve_boards() {
if(brdshm == NULL) {
brdshm = attach_shm(BRDSHM_KEY, sizeof(*brdshm));
if(brdshm->touchtime == 0)
brdshm->touchtime = 1;
bcache = brdshm->bcache;
}
while(brdshm->uptime < brdshm->touchtime)
{reload_bcache();}
numboards = brdshm->number;
}
void touch_boards() {
brdshm->touchtime=now;
numboards = -1;
resolve_boards();
}
void addbrd_touchcache()
{
brdshm->number++;
numboards=brdshm->number;
reset_board(numboards);
}
#if !defined(_BBS_UTIL_C_)
void reset_board(int bid) { /* Ptt: 這樣就不用老是touch board了 */
int fd,i;
boardheader_t *bhdr;
if(--bid < 0)
return;
if(brdshm->busystate || brdshm->busystate_b[bid-1]) {
safe_sleep(1);
} else {
brdshm->busystate_b[bid-1] = 1;
bhdr = bcache;
bhdr += bid;
if((fd = open(fn_board, O_RDONLY)) > 0) {
lseek(fd, (off_t)(bid * sizeof(boardheader_t)), SEEK_SET);
read(fd, bhdr, sizeof(boardheader_t));
close(fd);
}
sort_bcache();
for(i=0;i<brdshm->number;i++)
{
bcache[i].firstchild[0]=NULL;
bcache[i].firstchild[1]=NULL;
}
brdshm->busystate_b[bid-1] = 0;
}
}
int apply_boards(int (*func)(boardheader_t *)) {
register int i;
register boardheader_t *bhdr;
for(i = 0, bhdr = bcache; i < numboards; i++, bhdr++) {
if(!(bhdr->brdattr & BRD_GROUPBOARD) && Ben_Perm(bhdr) &&
(*func)(bhdr) == QUIT)
return QUIT;
}
return 0;
}
#endif
boardheader_t *getbcache(int bid) { /* Ptt改寫 */
return bcache + bid - 1;
}
int getbtotal(int bid)
{
return brdshm->total[bid - 1];
}
void setbtotal(int bid) {
boardheader_t *bh = getbcache(bid);
struct stat st;
char genbuf[256];
int num,fd;
sprintf(genbuf, "boards/%c/%s/.DIR", bh->brdname[0], bh->brdname);
if((fd = open(genbuf, O_RDWR)) < 0)
return; /* .DIR掛了 */
fstat(fd, &st);
num = st.st_size / sizeof(fileheader_t);
brdshm->total[bid - 1] = num;
if(num>0)
{
lseek(fd, (off_t) (num - 1) * sizeof(fileheader_t), SEEK_SET);
if(read(fd, genbuf, FNLEN)>=0)
{
brdshm->lastposttime[bid - 1]=(time_t) atoi(&genbuf[2]);
}
}
else
brdshm->lastposttime[bid - 1] = 0;
close(fd);
if(num)
touchdircache(bid);
}
void
touchbpostnum(int bid, int delta) {
int *total = &brdshm->total[bid - 1];
if (*total) *total += delta;
}
int getbnum(char *bname) {
register int i=0, j, start = 0, end = brdshm->number - 1;
register boardheader_t **bhdr;
bhdr=brdshm->sorted[0];
for(i=((start+end)/2); ;i=(start+end)/2)
{
if(! (j=strcasecmp(bname,bhdr[i]->brdname)))
return (int) (bhdr[i] - bcache +1);
if(end==start)
{
break;
}
else if(i==start)
{
i=end;
start=end;
}
else if(j>0) start = i;
else end = i;
}
return 0;
}
#if !defined(_BBS_UTIL_C_)
extern char *fn_water;
extern char *str_sysop;
int haspostperm(char *bname) {
register int i;
char buf[200];
setbfile(buf, bname, fn_water);
if(belong(buf, cuser.userid))
return 0;
if(!strcasecmp(bname, DEFAULT_BOARD))
return 1;
if (!strcasecmp(bname, "PttLaw"))
return 1;
if(!HAS_PERM(PERM_POST))
return 0;
if(!(i = getbnum(bname)))
return 0;
/* 秘密看板特別處理 */
if(bcache[i - 1].brdattr & BRD_HIDE)
return 1;
i = bcache[i - 1].level;
if (HAS_PERM(PERM_VIOLATELAW) && (i & PERM_VIOLATELAW))
return 1;
else if (HAS_PERM(PERM_VIOLATELAW))
return 0;
return HAS_PERM(i & ~PERM_POST);
}
#endif
/*-------------------------------------------------------*/
/* PTT cache */
/*-------------------------------------------------------*/
/* cachefor 動態看版 */
struct pttcache_t *ptt;
static void reload_pttcache()
{
if(ptt->busystate)
safe_sleep(1);
else { /* jochang: temporary workaround */
fileheader_t item, subitem;
char pbuf[256], buf[256], *chr;
FILE *fp, *fp1, *fp2;
int id, section = 0;
ptt->busystate = 1;
ptt->max_film = 0;
bzero(ptt->notes, sizeof ptt->notes);
setapath(pbuf, "Note");
setadir(buf, pbuf);
id = 0;
if((fp = fopen(buf, "r"))) {
while(fread(&item, sizeof(item), 1, fp)) {
if(item.title[3]=='<' && item.title[8]=='>') {
sprintf(buf,"%s/%s", pbuf, item.filename);
setadir(buf, buf);
if(!(fp1 = fopen(buf, "r")))
continue;
ptt->next_refresh[section] = ptt->n_notes[section] = id;
section ++;
while(fread(&subitem, sizeof(subitem), 1, fp1)) {
sprintf(buf,"%s/%s/%s", pbuf, item.filename ,
subitem.filename);
if(!(fp2=fopen(buf,"r")))
continue;
fread(ptt->notes[id],sizeof(char), 200*11, fp2);
ptt->notes[id][200*11 - 1]=0;
id++;
fclose(fp2);
if(id >= MAX_MOVIE)
break;
}
fclose(fp1);
if(id >= MAX_MOVIE || section >= MAX_MOVIE_SECTION)
break;
}
}
fclose(fp);
}
ptt->next_refresh[section] = -1;
ptt->n_notes[section] = ptt->max_film = id-1;
ptt->max_history = ptt->max_film - 2;
if(ptt->max_history > MAX_HISTORY - 1)
ptt->max_history = MAX_HISTORY - 1;
if(ptt->max_history <0) ptt->max_history=0;
fp = fopen("etc/today_is","r");
if(fp) {
fgets(ptt->today_is,15,fp);
if((chr = strchr(ptt->today_is,'\n')))
*chr = 0;
ptt->today_is[15] = 0;
fclose(fp);
}
/* 等所有資料更新後再設定 uptime */
ptt->uptime = ptt->touchtime ;
#if !defined(_BBS_UTIL_C_)
log_usies("CACHE", "reload pttcache");
#endif
ptt->busystate = 0;
}
}
int *GLOBE;
void resolve_garbage() {
int count=0;
if(ptt == NULL) {
ptt = attach_shm(PTTSHM_KEY, sizeof(*ptt));
GLOBE = ptt->GLOBE;
if(ptt->touchtime == 0)
ptt->touchtime = 1;
}
while(ptt->uptime < ptt->touchtime) { /* 不用while等 */
reload_pttcache();
if(count ++ > 10 && ptt->busystate) {
/* Ptt: 這邊會有問題 load超過10 秒會所有進loop的process都讓 busystate = 0
這樣會所有prcosee都會在load 動態看板 會造成load大增
但沒有用這個function的話 萬一load passwd檔的process死了 又沒有人把他
解開 同樣的問題發生在reload passwd
*/
ptt->busystate = 0;
#ifndef _BBS_UTIL_C_
log_usies("CACHE", "refork Ptt dead lock");
#endif
}
}
}
/*-------------------------------------------------------*/
/* PTT's cache */
/*-------------------------------------------------------*/
/* cachefor from host 與最多上線人數 */
struct fromcache_t *fcache;
static void reload_fcache() {
if(fcache->busystate)
safe_sleep(1);
else {
FILE *fp;
fcache->busystate = 1;
bzero(fcache->domain, sizeof fcache->domain);
if((fp = fopen("etc/domain_name_query","r"))) {
char buf[256],*po;
fcache->top=0;
while(fgets(buf, sizeof(buf),fp)) {
if(buf[0] && buf[0] != '#' && buf[0] != ' ' &&
buf[0] != '\n') {
sscanf(buf,"%s",fcache->domain[fcache->top]);
po = buf + strlen(fcache->domain[fcache->top]);
while(*po == ' ')
po++;
strncpy(fcache->replace[fcache->top],po,49);
fcache->replace[fcache->top]
[strlen(fcache->replace[fcache->top])-1] = 0;
(fcache->top)++;
if(fcache->top == MAX_FROM)
break;
}
}
}
fcache->max_user=0;
/* 等所有資料更新後再設定 uptime */
fcache->uptime = fcache->touchtime;
#if !defined(_BBS_UTIL_C_)
log_usies("CACHE", "reload fcache");
#endif
fcache->busystate = 0;
}
}
void resolve_fcache() {
if(fcache == NULL) {
fcache = attach_shm(FROMSHM_KEY, sizeof(*fcache));
if(fcache->touchtime == 0)
fcache->touchtime = 1;
}
while(fcache->uptime < fcache->touchtime)
reload_fcache();
}
extern time_t login_start_time;
extern char *fn_visable;
void hbflreload(int bid)
{
int hbfl[MAX_FRIEND + 1], i, num, uid;
char buf[128];
FILE *fp;
memset(hbfl, 0, sizeof(hbfl));
setbfile(buf, bcache[bid-1].brdname, fn_visable);
if( (fp = fopen(buf, "r")) != NULL ){
for( num = 1 ; num <= MAX_FRIEND ; ++num ){
if( fgets(buf, sizeof(buf), fp) == NULL )
break;
for( i = 0 ; buf[i] != 0 ; ++i )
if( buf[i] == ' ' ){
buf[i] = 0;
break;
}
if( strcasecmp("guest", buf) == 0 ||
(uid = searchuser(buf)) == 0 ) {
--num;
continue;
}
hbfl[num] = uid;
}
fclose(fp);
}
hbfl[0] = now;
memcpy(brdshm->hbfl[bid], hbfl, sizeof(hbfl));
}
int hbflcheck(int bid, int uid)
{
int i;
if( brdshm->hbfl[bid][0] < login_start_time - HBFLexpire )
hbflreload(bid);
for( i = 1 ; brdshm->hbfl[bid][i] != 0 && i <= MAX_FRIEND ; ++i ){
if( brdshm->hbfl[bid][i] == uid )
return 0;
}
return 1;
}
#ifdef MDCACHE
char *cachepath(const char *fpath)
{
static char cpath[128];
char *ptr;
snprintf(cpath, sizeof(cpath), "cache/%s", fpath);
for( ptr = &cpath[6] ; *ptr != 0 ; ++ptr )
if( *ptr == '/' )
*ptr = '.';
return cpath;
}
int updatemdcache(const char *CPATH, const char *fpath)
{
/* save file to mdcache with *cpath and *fpath,
return: -1 if error
else the fd
*/
int len, sourcefd, targetfd;
char buf[1024], *cpath;
cpath = (CPATH == NULL) ? cachepath(fpath) : (char *)CPATH;
if( (sourcefd = open(fpath, O_RDONLY)) < 0 )
return -1;
if( (targetfd = open(cpath, O_RDWR | O_CREAT | O_TRUNC, 0600)) < 0 )
/* md is full? */
return -1;
while( (len = read(sourcefd, buf, sizeof(buf))) > 0 )
if( write(targetfd, buf, len) < len ){
/* md is full? */
close(targetfd);
unlink(cpath);
lseek(sourcefd, 0, SEEK_SET);
return sourcefd;
}
close(sourcefd);
lseek(targetfd, 0, SEEK_SET);
return targetfd;
}
int mdcacheopen(char *fpath)
{
int fd;
char *cpath;
if( strncmp(fpath, "boards/", 7) && strncmp(fpath, "etc/", 4) )
return open(fpath, O_RDONLY);
#ifdef MDCACHEHITRATE
++GLOBE[0];
#endif
if( (fd = open((cpath = cachepath(fpath)), O_RDONLY)) < 0 )
return updatemdcache(cpath, fpath);
#ifdef MDCACHEHITRATE
else
++GLOBE[1];
#endif
return fd;
}
#endif
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