File: util.h

package info (click to toggle)
pam-u2f 1.0.8-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, sid
  • size: 1,764 kB
  • sloc: sh: 4,465; ansic: 1,672; makefile: 88
file content (68 lines) | stat: -rw-r--r-- 2,042 bytes parent folder | download | duplicates (2)
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
/*
 * Copyright (C) 2014-2019 Yubico AB - See COPYING
 */

#ifndef UTIL_H
#define UTIL_H

#include <stdio.h>
#include <security/pam_appl.h>

#define BUFSIZE 1024
#define MAX_DEVS 24
#define PK_LEN 130 // Public key
#define KH_LEN 86  // Key handle
#define RD_LEN 40  // Rounding
#define DEVSIZE (((PK_LEN) + (KH_LEN) + (RD_LEN)))
#define DEFAULT_AUTHFILE_DIR_VAR "XDG_CONFIG_HOME"
#define DEFAULT_AUTHFILE "/Yubico/u2f_keys"
#define DEFAULT_AUTHPENDING_FILE_PATH "/var/run/user/%d/pam-u2f-authpending"
#define DEFAULT_PROMPT "Insert your U2F device, then press ENTER."
#define DEFAULT_CUE "Please touch the device."
#define DEFAULT_ORIGIN_PREFIX "pam://"
#define DEBUG_STR "debug(pam_u2f): %s:%d (%s): "

#if defined(DEBUG_PAM)
#define D(file, ...)  _debug(file, __FILE__, __LINE__, __func__, __VA_ARGS__)
#else
#define D(file, ...)
#endif /* DEBUG_PAM */

typedef struct {
  unsigned max_devs;
  const char *client_key;
  int manual;
  int debug;
  int nouserok;
  int openasuser;
  int alwaysok;
  int interactive;
  int cue;
  int nodetect;
  const char *auth_file;
  const char *authpending_file;
  const char *origin;
  const char *appid;
  const char *prompt;
  FILE *debug_file;
  int is_custom_debug_file;
} cfg_t;

typedef struct {
  unsigned char *publicKey;
  char *keyHandle;
  size_t key_len;
} device_t;

int get_devices_from_authfile(const char *authfile, const char *username,
                              unsigned max_devs, int verbose, FILE *debug_file,
                              device_t *devices, unsigned *n_devs);
void free_devices(device_t *devices, const unsigned n_devs);

int do_authentication(const cfg_t *cfg, const device_t *devices,
                      const unsigned n_devs, pam_handle_t *pamh);
int do_manual_authentication(const cfg_t *cfg, const device_t *devices,
                             const unsigned n_devs, pam_handle_t *pamh);
char *converse(pam_handle_t *pamh, int echocode, const char *prompt);
void _debug(FILE *, const char *, int, const char *, const char *, ...);
#endif /* UTIL_H */