summaryrefslogtreecommitdiffstats
path: root/mbbsd/passwd.c
blob: ec4e68ec479ab0526c7ef210860adf7c500ee8cf (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
/* $Id$ */
#include "bbs.h"

static int      semid = -1;

#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

int
passwd_init()
{
    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);
    }
    }

    return 0;
}

int
passwd_update_money(int num) /* update money only */
{
   userec_t user;
   int pwdfd, money = moneyof(num);
   char path[256];

   if (num < 1 || num > MAX_USERS)
    return -1;

   sethomefile(path, getuserid(num), ".passwd");

   if ((pwdfd = open(path, O_WRONLY)) < 0)
       {
        if(passwd_index_query(num, &user)<0)  // tempory code, will be removed
               exit(1);
        user.money=money;
        passwd_update(num, &user);
        return 0;
       }

   if(lseek(pwdfd, (off_t)((int)&user.money - (int)&user), SEEK_SET) >= 0)
              write(pwdfd, &money, sizeof(int));

   close(pwdfd);
   return 0;
}

int
passwd_index_update(int num, userec_t * buf)
{
    int  pwdfd;
    if (num < 1 || num > MAX_USERS)
    return -1;
    buf->money = moneyof(num);
    if ((pwdfd = open(fn_passwd, O_WRONLY)) < 0)
    exit(1);
    lseek(pwdfd, sizeof(userec_t) * (num - 1), SEEK_SET);
    write(pwdfd, buf, sizeof(userec_t));
    close(pwdfd);
    return 0;
}

int
passwd_update(int num, userec_t * buf)
{
   int pwdfd;
   char path[256];

   if(!buf->userid[0]) return -1;

   sethomefile(path, buf->userid, ".passwd");
   buf->money = moneyof(num);
   if ((pwdfd = open(path, O_WRONLY|O_CREAT, 0600)) < 0)
           return -1;
   write(pwdfd, buf, sizeof(userec_t));
   close(pwdfd);
   return 0;
}

int
passwd_index_query(int num, userec_t * buf)
{
    int             pwdfd;
    if (num < 1 || num > MAX_USERS)
    return -1;
    if ((pwdfd = open(fn_passwd, O_RDONLY)) < 0)
    exit(1);
    lseek(pwdfd, sizeof(userec_t) * (num - 1), SEEK_SET);
    read(pwdfd, buf, sizeof(userec_t));
    close(pwdfd);
    return 0;
}

userec_t userecbuf;
int initcuser(char *userid)
{
    // Ptt: setup cuser and usernum here
   if(userid[0]=='\0' ||
   !(usernum = searchuser(userid)) || usernum > MAX_USERS)
     {
      memset(&userecbuf, 0, sizeof(userecbuf));
      strcpy(userecbuf.userid, STR_GUEST);
      return -1;
     }
   passwd_query(usernum, &userecbuf);
   cuser = &userecbuf;
   return usernum;
}

int
passwd_query(int num, userec_t * buf)
{
   int pwdfd;
   char path[256], *userid;

   if (num < 1 || num > MAX_USERS)
        return -1;
   userid = getuserid(num); 

   if(userid[0]=='\0') return -1;

   sethomefile(path, userid, ".passwd");
   if((pwdfd = open(path, O_RDONLY)) < 0)
     {  // copy from index // tempory code, will be removed
        if(passwd_index_query(num, buf)<0)
               exit(1);
        passwd_update(num, buf);
        return 0;
     }
   read(pwdfd, buf, sizeof(userec_t));
   close(pwdfd);
   return 0;
}

int
passwd_apply(int (*fptr) (int, userec_t *))
{
    int             i;
    userec_t        user;
    for (i = 0; i < MAX_USERS; i++) {
    passwd_query(i + 1, &user);
    if ((*fptr) (i, &user) == 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);
    }
}