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
|
/*
-*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
Sections of this where taken/modified from mod_auth_path for Apache
*/
#include <drizzled/server_includes.h>
#include <drizzled/session.h>
#include <drizzled/plugin/authentication.h>
#include <security/pam_appl.h>
#if !defined(__sun) && !defined(__FreeBSD__)
#include <security/pam_misc.h>
#endif
typedef struct {
const char *name;
const char *password;
} auth_pam_userinfo;
extern "C"
int auth_pam_talker(int num_msg,
#ifdef __sun
struct pam_message **msg,
#else
const struct pam_message **msg,
#endif
struct pam_response **resp,
void *appdata_ptr);
int auth_pam_talker(int num_msg,
#ifdef __sun
struct pam_message **msg,
#else
const struct pam_message **msg,
#endif
struct pam_response **resp,
void *appdata_ptr)
{
auth_pam_userinfo *userinfo = (auth_pam_userinfo*)appdata_ptr;
struct pam_response *response = 0;
int x;
/* parameter sanity checking */
if(!resp || !msg || !userinfo)
return PAM_CONV_ERR;
/* allocate memory to store response */
response= (struct pam_response*)malloc(num_msg * sizeof(struct pam_response));
if(!response)
return PAM_CONV_ERR;
/* copy values */
for(x= 0; x < num_msg; x++)
{
/* initialize to safe values */
response[x].resp_retcode= 0;
response[x].resp= 0;
/* select response based on requested output style */
switch(msg[x]->msg_style)
{
case PAM_PROMPT_ECHO_ON:
/* on memory allocation failure, auth fails */
response[x].resp = strdup(userinfo->name);
break;
case PAM_PROMPT_ECHO_OFF:
response[x].resp = strdup(userinfo->password);
break;
default:
if(response)
free(response);
return PAM_CONV_ERR;
}
}
/* everything okay, set PAM response values */
*resp = response;
return PAM_SUCCESS;
}
class Auth_pam : public drizzled::plugin::Authentication
{
public:
virtual bool authenticate(Session *session, const char *password)
{
int retval;
auth_pam_userinfo userinfo= { NULL, NULL };
struct pam_conv conv_info= { &auth_pam_talker, (void*)&userinfo };
pam_handle_t *pamh= NULL;
userinfo.name= session->security_ctx.user.c_str();
userinfo.password= password;
retval= pam_start("check_user", userinfo.name, &conv_info, &pamh);
if (retval == PAM_SUCCESS)
retval= pam_authenticate(pamh, PAM_DISALLOW_NULL_AUTHTOK);
if (retval == PAM_SUCCESS)
retval= pam_acct_mgmt(pamh, PAM_DISALLOW_NULL_AUTHTOK);
pam_end(pamh, retval);
return (retval == PAM_SUCCESS) ? true: false;
}
};
static Auth_pam *auth= NULL;
static int initialize(drizzled::plugin::Registry ®istry)
{
auth= new Auth_pam();
registry.authentication.add(auth);
return 0;
}
static int finalize(drizzled::plugin::Registry ®istry)
{
if (auth)
{
registry.authentication.remove(auth);
delete auth;
}
return 0;
}
drizzle_declare_plugin(auth_pam)
{
"pam",
"0.1",
"Brian Aker",
"PAM based authenication.",
PLUGIN_LICENSE_GPL,
initialize, /* Plugin Init */
finalize, /* Plugin Deinit */
NULL, /* status variables */
NULL, /* system variables */
NULL /* config options */
}
drizzle_declare_plugin_end;
|