1 files changed, 139 insertions, 0 deletions
diff --git a/util/util_passwd.c b/util/util_passwd.c
new file mode 100644
index 00000000..07a79351
--- /dev/null
+++ b/util/util_passwd.c
@@ -0,0 +1,139 @@
+/* $Id: util_passwd.c,v 1.1 2002/03/07 15:13:46 in2 Exp $ */
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include "config.h"
+#include "pttstruct.h"
+#include "modes.h"
+#include "common.h"
+
+#ifndef SEM_R
+#define SEM_R 0400
+#endif
+
+#ifndef SEM_A
+#define SEM_A 0200
+#endif
+
+#ifndef __FreeBSD__
+union semun {
+        int     val;            /* value for SETVAL */
+        struct  semid_ds *buf;  /* buffer for IPC_STAT & IPC_SET */
+        u_short *array;         /* array for GETALL & SETALL */
+        struct seminfo *__buf;  /* buffer for IPC_INFO */
+};
+#endif
+
+static userec_t *passwd_image = NULL;
+static int passwd_image_size;
+static int semid = -1;
+
+int passwd_mmap() {
+    int fd;
+    
+    if(passwd_image!=NULL) return 0;
+    fd = open(FN_PASSWD, O_RDWR);
+    if(fd > 0) {
+	struct stat st;
+	
+	fstat(fd, &st);
+	passwd_image_size = st.st_size;
+	passwd_image = mmap(NULL, passwd_image_size,
+			    PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
+	if(passwd_image == (userec_t *)-1) {
+	    perror("mmap");
+	    return -1;
+	}
+        close(fd);	
+	semid = semget(PASSWDSEM_KEY, 1, SEM_R | SEM_A | IPC_CREAT | IPC_EXCL);
+	if(semid == -1) {
+	    if(errno == EEXIST) {
+		semid = semget(PASSWDSEM_KEY, 1, SEM_R | SEM_A);
+		if(semid == -1) {
+		    perror("semget");
+		    exit(1);
+		}
+	    } else {
+		perror("semget");
+		exit(1);
+	    }
+	} else {
+	    union semun s;
+	    
+	    s.val = 1;
+	    if(semctl(semid, 0, SETVAL, s) == -1) {
+		perror("semctl");
+		exit(1);
+	    }
+	}
+    } else {
+	perror(FN_PASSWD);
+	return -1;
+    }
+    return 0;
+}
+int passwd_update_money(int num) {
+    int money;
+    if(num < 1 || num > MAX_USERS)
+        return -1;
+    money = moneyof(num);
+    memcpy(&passwd_image[num - 1].money, &money, sizeof(int));
+    return 0;
+}
+
+int passwd_update(int num, userec_t *buf) {
+    if(num < 1 || num > MAX_USERS)
+        return -1;
+    buf->money = moneyof(num);
+    memcpy(&passwd_image[num - 1], buf, sizeof(userec_t));
+    return 0;
+}
+
+int passwd_query(int num, userec_t *buf) {
+    if(num < 1 || num > MAX_USERS)
+	return -1;
+    memcpy(buf, &passwd_image[num - 1], sizeof(userec_t));
+    return 0;
+}
+
+int passwd_apply(int (*fptr)(userec_t *)) {
+    int i;
+
+    for(i = 0; i < MAX_USERS; i++)
+	if((*fptr)(&passwd_image[i]) == QUIT)
+	    return QUIT;
+    return 0;
+}
+
+int passwd_apply2(int (*fptr)(int, userec_t *)) {
+    int i;
+
+    for(i = 0; i < MAX_USERS; i++)
+	if((*fptr)(i, &passwd_image[i]) == QUIT)
+	    return QUIT;
+    return 0;
+}
+
+void passwd_lock() {
+    struct sembuf buf = { 0, -1, SEM_UNDO };
+    
+    if(semop(semid, &buf, 1)) {
+	perror("semop");
+	exit(1);
+    }
+}
+
+void passwd_unlock() {
+    struct sembuf buf = { 0, 1, SEM_UNDO };
+    
+    if(semop(semid, &buf, 1)) {
+	perror("semop");
+	exit(1);
+    }
+}