replace rand() with random() for better randomness

git-svn-id: http://opensvn.csie.org/pttbbs/trunk/pttbbs@2460 63ad8ddf-47c3-0310-b6dd-a9e9d9715204

17 files changed, 25 insertions, 25 deletions

diff --git a/mbbsd/cal.c b/mbbsd/cal.c
index 1e58d53f..78011f5f 100644
--- a/mbbsd/cal.c
+++ b/mbbsd/cal.c
@@ -60,7 +60,7 @@ int
 vice(int money, char *item)
 {
    char            buf[128];
-   unsigned int viceserial = (currutmp->lastact % 10000) * 10000 + rand() % 10000;
+   unsigned int viceserial = (currutmp->lastact % 10000) * 10000 + random() % 10000;
 
     demoney(-money);
     if(money>=100) 
diff --git a/mbbsd/card.c b/mbbsd/card.c
index 0d973be2..6353e425 100644
--- a/mbbsd/card.c
+++ b/mbbsd/card.c
@@ -181,7 +181,7 @@ card_give(int cards[])
 
     assert(nfreecard>0); /* caller 要負責確保還有剩牌 */
 
-    i=freecard[rand()%nfreecard];
+    i=freecard[random()%nfreecard];
     cards[i] = 1;
     return i;
 }
diff --git a/mbbsd/chc.c b/mbbsd/chc.c
index c4f20dff..32e8f1ec 100644
--- a/mbbsd/chc.c
+++ b/mbbsd/chc.c
@@ -381,7 +381,7 @@ chc_log_poem(void)
     else {
 	char buf[80];
 	FILE *fp;
-	sprintf(buf, BBSHOME"/etc/chess/%s", namelist[rand() % n]->d_name);
+	sprintf(buf, BBSHOME"/etc/chess/%s", namelist[random() % n]->d_name);
 	if ((fp = fopen(buf, "r")) == NULL)
 	    return -1;
 
diff --git a/mbbsd/chicken.c b/mbbsd/chicken.c
index 05f857cc..40e53da2 100644
--- a/mbbsd/chicken.c
+++ b/mbbsd/chicken.c
@@ -308,7 +308,7 @@ ch_guess()
     me -= '1';
     if (me > 2 || me < 0)
 	me = 0;
-    win = (int)(3.0 * rand() / (RAND_MAX + 1.0)) - 1;
+    win = (int)(3.0 * random() / (RAND_MAX + 1.0)) - 1;
     ch = (me + win + 3) % 3;
     prints("%s:%s !      %s:%s !.....%s",
 	   cuser.userid, guess[(int)me], mychicken->name, guess[(int)ch],
@@ -347,7 +347,7 @@ ch_hit()
     mychicken->mm_max += time_change[(int)mychicken->type][MM_MAX] / 15;
     mychicken->weight -= mychicken->hp_max / 15;
     mychicken->hp -= (int)((float)time_change[(int)mychicken->type][HP_MAX] *
-			   rand() / (RAND_MAX + 1.0)) / 2 + 1;
+			   random() / (RAND_MAX + 1.0)) / 2 + 1;
 
     if (mychicken->book > 2)
 	mychicken->book -= 2;
@@ -800,7 +800,7 @@ static int
 recover_chicken(chicken_t * thechicken)
 {
     char            buf[200];
-    int             price = egg_price[(int)thechicken->type], money = price + (rand() % price);
+    int             price = egg_price[(int)thechicken->type], money = price + (random() % price);
 
     if (now - thechicken->lastvisit > (60 * 60 * 24 * 7))
 	return 0;
@@ -905,7 +905,7 @@ chickenpk(int fd)
     show_chicken_data(ochicken, mychicken);
     add_io(fd, 3);		/* 把fd加到igetch監視 */
     while (1) {
-	r = rand();
+	r = random();
 	ch = igetch();
 	getuser(mateid);
 	memcpy(&ouser, &xuser, sizeof(userec_t));
diff --git a/mbbsd/dark.c b/mbbsd/dark.c
index 1942aa86..e7d644cd 100644
--- a/mbbsd/dark.c
+++ b/mbbsd/dark.c
@@ -108,7 +108,7 @@ brd_rand()
     for (y = 0; y < 4; y++)
 	for (x = 0; x < 8; x++)
 	    while (1) {
-		index = rand() % 32;
+		index = random() % 32;
 		if (tem[index])
 		    continue;
 		brd[y][x].color = (index > 15) ? 0 : 1;
diff --git a/mbbsd/dice.c b/mbbsd/dice.c
index b6283731..f3b7ff90 100644
--- a/mbbsd/dice.c
+++ b/mbbsd/dice.c
@@ -356,7 +356,7 @@ dice_main(void)
 	clear();
 	show_data();
 	for (j = 0; j < 3; j++)
-	    bet[j] = rand() % 6 + 1;
+	    bet[j] = random() % 6 + 1;
 
 	for (j = 0; j < 100; j++)
 	    value[j] = 0;
diff --git a/mbbsd/edit.c b/mbbsd/edit.c
index 4eadc280..310fd7b3 100644
--- a/mbbsd/edit.c
+++ b/mbbsd/edit.c
@@ -1043,7 +1043,7 @@ addsignature(FILE * fp, int ifuseanony)
 	    if (isdigit((int)buf[0]))
 		ch = buf[0];
 	    else
-		ch = '1' + rand() % num;
+		ch = '1' + random() % num;
 	    cuser.signature = buf[0];
 
 	    if (ch != '0') {
diff --git a/mbbsd/file.c b/mbbsd/file.c
index 9c2e6927..1c934bfb 100644
--- a/mbbsd/file.c
+++ b/mbbsd/file.c
@@ -58,7 +58,7 @@ int file_delete_line(char *file, char *string, int  case_sensitive)
     char            fnew[80];
     char            genbuf[STRLEN + 1];
 
-    sprintf(fnew, "%s.%3.3X", file, rand() & 0xFFF);
+    sprintf(fnew, "%s.%3.3X", file, random() & 0xFFF);
     if ((fp = fopen(file, "r")) && (nfp = fopen(fnew, "w"))) {
 	int             length = strlen(string);
 
diff --git a/mbbsd/guess.c b/mbbsd/guess.c
index 55e5e624..68ea0591 100644
--- a/mbbsd/guess.c
+++ b/mbbsd/guess.c
@@ -165,10 +165,10 @@ computer(int correct, int total, char flag[], int n[])
 
     if (total == 1) {
 	do {
-	    guess = rand() % 10000;
+	    guess = random() % 10000;
 	} while (!legal(guess));
     } else
-	guess = n[rand() % j];
+	guess = n[random() % j];
     k = result(correct, guess);
     if (k == 40) {
 	move(total + 8, 25);
@@ -197,7 +197,7 @@ Diff_Random(char *answer)
     register int    i = 0, j, k;
 
     while (i < 4) {
-	k = rand() % 10 + '0';
+	k = random() % 10 + '0';
 	for (j = 0; j < i; j++)
 	    if (k == answer[j])
 		break;
diff --git a/mbbsd/lovepaper.c b/mbbsd/lovepaper.c
index b93fefbd..b7d4c143 100644
--- a/mbbsd/lovepaper.c
+++ b/mbbsd/lovepaper.c
@@ -60,7 +60,7 @@ x_love()
 	    case '8':
 	    case '9':
 		sscanf(buf1, "%d", &x);
-		y = (rand() % (x - 1)) * tline;
+		y = (random() % (x - 1)) * tline;
 		break;
 	    default:
 		if (!poem) {
diff --git a/mbbsd/mbbsd.c b/mbbsd/mbbsd.c
index 34b78e06..20ac1d99 100644
--- a/mbbsd/mbbsd.c
+++ b/mbbsd/mbbsd.c
@@ -207,7 +207,7 @@ abort_bbs_debug(int sig)
 static void
 mysrand()
 {
-    srand(time(NULL) + getpid());	/* 時間跟 pid 當 rand 的 seed */
+    srandom(time(NULL) + getpid());	/* 時間跟 pid 當 rand 的 seed */
 }
 
 void
diff --git a/mbbsd/menu.c b/mbbsd/menu.c
index 092c497f..6b45d528 100644
--- a/mbbsd/menu.c
+++ b/mbbsd/menu.c
@@ -118,7 +118,7 @@ movie(int i)
 	    do {
 		if (!i)
 		    i = 1 + (int)(((float)SHM->max_film *
-				   rand()) / (RAND_MAX + 1.0));
+				   random()) / (RAND_MAX + 1.0));
 
 		for (j = SHM->max_history; j >= 0; j--)
 		    if (i == history[j]) {
diff --git a/mbbsd/othello.c b/mbbsd/othello.c
index 7f4b77b2..3392ca02 100644
--- a/mbbsd/othello.c
+++ b/mbbsd/othello.c
@@ -533,7 +533,7 @@ othello_main()
     think = choose();
     showtitle("黑白棋", BBSName);
     printboard();
-    which_table = rand() % NR_TABLE;
+    which_table = random() % NR_TABLE;
     while (true) {
 	move(STARTX - 1, 30);
 	outs("輪到你下了...");
diff --git a/mbbsd/record.c b/mbbsd/record.c
index 05773ef7..47b62010 100644
--- a/mbbsd/record.c
+++ b/mbbsd/record.c
@@ -479,7 +479,7 @@ stampfile(char *fpath, fileheader_t * fh)
 #ifdef _BBS_UTIL_C_
     do {
 #endif
-	sprintf(ip, "M.%d.A.%3.3X", (int)++dtime, rand() & 0xFFF);
+	sprintf(ip, "M.%d.A.%3.3X", (int)++dtime, random() & 0xFFF);
 #ifdef _BBS_UTIL_C_
 	if (fp == -1 && errno != EEXIST)
 	    return -1;
diff --git a/mbbsd/talk.c b/mbbsd/talk.c
index 30cc268b..a2cb2733 100644
--- a/mbbsd/talk.c
+++ b/mbbsd/talk.c
@@ -3041,7 +3041,7 @@ FindAngel(void){
 	if (nAngel == 0)
 	    return 0;
 
-	choose = rand() % nAngel + 1;
+	choose = random() % nAngel + 1;
 	j = SHM->currsorted;
 	for (i = 0; i < SHM->UTMPnumber && choose; ++i)
 	    if ((SHM->uinfo[SHM->sorted[j][0][i]].userlevel & PERM_ANGEL)
diff --git a/mbbsd/vice.c b/mbbsd/vice.c
index 843d3e83..ef527b72 100644
--- a/mbbsd/vice.c
+++ b/mbbsd/vice.c
@@ -54,7 +54,7 @@ ran_showfile(int y, int x, char *filename, int maxnum)
     char            buf[512];
 
     bzero(buf, sizeof(buf));
-    snprintf(buf, sizeof(buf), "%s%d", filename, rand() % maxnum + 1);
+    snprintf(buf, sizeof(buf), "%s%d", filename, random() % maxnum + 1);
     if (!(fs = fopen(buf, "r"))) {
 	move(10, 10);
 	prints("can't open file: %s", buf);
@@ -74,7 +74,7 @@ ran_showmfile(char *filename, int maxnum)
 {
     char            buf[256];
 
-    snprintf(buf, sizeof(buf), "%s%d", filename, rand() % maxnum + 1);
+    snprintf(buf, sizeof(buf), "%s%d", filename, random() % maxnum + 1);
     return more(buf, YEA);
 }
 
diff --git a/util/openvice.c b/util/openvice.c
index bf258a3f..588fc41d 100644
--- a/util/openvice.c
+++ b/util/openvice.c
@@ -20,14 +20,14 @@ int main(int argc, char **argv)
     // XXX: resolve_utmp();
     attach_SHM();
 
-    srand(SHM->number);
+    srandom(SHM->number);
     /* FIXME 小站的 SHM->number 變化不大, 可能導致開獎號碼固定 */
 
     if (!fp || !fb )
 	perror("error open file");
 
 
-    bingo = rand() % MAX_BINGO;
+    bingo = random() % MAX_BINGO;
     fprintf(fp, "%1c統一發票中獎號碼\n", ' ');
     fprintf(fp, "%1c================\n", ' ');
     fprintf(fp, "%1c特別獎: %08d\n\n", ' ', bingo);
@@ -35,7 +35,7 @@ int main(int argc, char **argv)
 
     while (i < 5)
     {
-	bingo = (base + rand()) % MAX_BINGO;
+	bingo = (base + random()) % MAX_BINGO;
 	fprintf(fp, "%1c第%s獎: %08d\n", ' ', TABLE[i], bingo);
 	fprintf(fb, "%08d\n", bingo);
 	i++;