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-rw-r--r--util/util_passwd.c139
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);
+ }
+}