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
|
/*
** Copyright 2001-2004 Double Precision, Inc. See COPYING for
** distribution information.
*/
/*
*/
#include "config.h"
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <pwd.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include <errno.h>
#include <sysconfdir.h>
#include "courierauth.h"
#include "pcpdauth.h"
#include "calendardir.h"
char *auth_choplocalhost(const char *u)
{
const char *p;
char *s;
p=strrchr(u, '@');
if (p && strcasecmp(p+1, auth_myhostname()) == 0)
{
s=malloc(p-u+1);
if (s)
{
memcpy(s, u, p-u);
s[p-u]=0;
}
}
else
s=strdup(u);
if (!s)
fprintf(stderr, "ALERT: malloc failed.\n");
return (s);
}
static int badstr(const char *p)
{
while (*p)
{
if ((int)(unsigned char)*p < ' '
|| *p == '\\' || *p == '\'' || *p == '"')
{
errno=EIO;
return (1);
}
++p;
}
return (0);
}
static int callback_userid(struct authinfo *a, void *vp)
{
struct userid_callback *uid=(struct userid_callback *)vp;
uid->homedir=a->homedir;
uid->maildir=a->maildir;
if (a->sysuserid)
uid->uid= *a->sysuserid;
else if (!a->sysusername)
return (-1);
else
{
struct passwd *pw=getpwnam(a->sysusername);
if (!pw)
return (-1);
uid->uid=pw->pw_uid;
}
return ( (*uid->callback_func)(uid, uid->callback_arg));
}
int authpcp_userid(const char *u, int (*func)(struct userid_callback *, void *),
void *funcarg)
{
char *s=NULL;
int rc;
struct userid_callback uinfo;
if (badstr(u))
return (-1);
s=auth_choplocalhost(u);
if (!s)
return (1);
memset(&uinfo, 0, sizeof(uinfo));
uinfo.userid=s;
uinfo.callback_func=func;
uinfo.callback_arg=funcarg;
rc=auth_getuserinfo("calendar", s, callback_userid, &uinfo);
free(s);
return (rc);
}
/*
** The returned mailboxid is of the form user.authdriver
**
** authdriver is included so that we can find the same authentication module
** quickly, for each request. authdriver is appended, rather than prepended,
** because the logincache hashes on the first couple of characters of the id.
*/
int authpcp_login(const char *uid, const char *pass,
int (*func)(struct userid_callback *, void *),
void *arg)
{
struct userid_callback uinfo;
memset(&uinfo, 0, sizeof(uinfo));
uinfo.callback_func=func;
uinfo.callback_arg=arg;
if (badstr(uid) || badstr(pass))
return (-1);
return (auth_login("calendar", uid, pass, callback_userid, &uinfo));
}
|
