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
|
#include "_cgo_export.h"
#include <security/pam_appl.h>
#include <stdint.h>
#include <string.h>
#ifdef __sun
#define PAM_CONST
#else
#define PAM_CONST const
#endif
int cb_pam_conv(int num_msg, PAM_CONST struct pam_message **msg, struct pam_response **resp, void *appdata_ptr)
{
if (num_msg <= 0 || num_msg > PAM_MAX_NUM_MSG)
return PAM_CONV_ERR;
*resp = calloc(num_msg, sizeof **resp);
if (!*resp)
return PAM_BUF_ERR;
for (size_t i = 0; i < num_msg; ++i) {
struct cbPAMConv_return result = cbPAMConv(msg[i]->msg_style, (char *)msg[i]->msg, (uintptr_t)appdata_ptr);
if (result.r1 != PAM_SUCCESS)
goto error;
(*resp)[i].resp = result.r0;
}
return PAM_SUCCESS;
error:
for (size_t i = 0; i < num_msg; ++i) {
if ((*resp)[i].resp) {
memset((*resp)[i].resp, 0, strlen((*resp)[i].resp));
free((*resp)[i].resp);
}
}
memset(*resp, 0, num_msg * sizeof *resp);
free(*resp);
*resp = NULL;
return PAM_CONV_ERR;
}
void init_pam_conv(struct pam_conv *conv, uintptr_t appdata)
{
conv->conv = cb_pam_conv;
conv->appdata_ptr = (void *)appdata;
}
// pam_start_confdir is a recent PAM api to declare a confdir (mostly for
// tests) weaken the linking dependency to detect if it’s present.
int pam_start_confdir(const char *service_name, const char *user, const struct pam_conv *pam_conversation,
const char *confdir, pam_handle_t **pamh) __attribute__((weak));
int check_pam_start_confdir(void)
{
if (pam_start_confdir == NULL)
return 1;
return 0;
}
|
