source/pam_smbpass/general.h

   1 #ifndef LINUX
   2 /* This is only needed by modules in the Sun implementation. */
   3 #include <security/pam_appl.h>
   4 #endif  /* LINUX */
   5
   6 #include <security/pam_modules.h>
   7
   8 #ifndef PAM_AUTHTOK_RECOVER_ERR
   9 #define PAM_AUTHTOK_RECOVER_ERR PAM_AUTHTOK_RECOVERY_ERR
  10 #endif
  11
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <unistd.h>
  15 #include <sys/types.h>
  16 #include <sys/stat.h>
  17 #include <sys/wait.h>
  18
  19 #ifdef HAVE_SYSLOG_H
  20 #include <syslog.h>
  21 #endif
  22
  23 /*
  24  * here is the string to inform the user that the new passwords they
  25  * typed were not the same.
  26  */
  27
  28 #define MISTYPED_PASS "Sorry, passwords do not match"
  29
  30 /* type definition for the control options */
  31
  32 typedef struct {
  33      const char *token;
  34      unsigned int mask;            /* shall assume 32 bits of flags */
  35      unsigned int flag;
  36 } SMB_Ctrls;
  37
  38 #ifndef False
  39 #define False (0)
  40 #endif
  41
  42 #ifndef True
  43 #define True (1)
  44 #endif
  45
  46 /* macro to determine if a given flag is on */
  47 #define on(x,ctrl)  (smb_args[x].flag & ctrl)
  48
  49 /* macro to determine that a given flag is NOT on */
  50 #define off(x,ctrl) (!on(x,ctrl))
  51
  52 /* macro to turn on/off a ctrl flag manually */
  53 #define set(x,ctrl)   (ctrl = ((ctrl)&smb_args[x].mask)|smb_args[x].flag)
  54 #define unset(x,ctrl) (ctrl &= ~(smb_args[x].flag))
  55
  56 #ifndef __linux__
  57 #define strncasecmp(s1,s2,n) StrnCaseCmp(s1,s2,n)
  58 #endif
  59
  60 /* the generic mask */
  61 #define _ALL_ON_  (~0U)
  62
  63 /* end of macro definitions definitions for the control flags */
  64
  65 /*
  66  * These are the options supported by the smb password module, very
  67  * similar to the pwdb options
  68  */
  69
  70 #define SMB__OLD_PASSWD          0      /* internal */
  71 #define SMB__VERIFY_PASSWD       1      /* internal */
  72
  73 #define SMB_AUDIT                2      /* print more things than debug..
  74                                            some information may be sensitive */
  75 #define SMB_USE_FIRST_PASS       3
  76 #define SMB_TRY_FIRST_PASS       4
  77 #define SMB_NOT_SET_PASS         5      /* don't set the AUTHTOK items */
  78
  79 #define SMB__NONULL              6      /* internal */
  80 #define SMB__QUIET               7      /* internal */
  81 #define SMB_USE_AUTHTOK          8      /* insist on reading PAM_AUTHTOK */
  82 #define SMB__NULLOK              9      /* Null token ok */
  83 #define SMB_DEBUG               10      /* send more info to syslog(3) */
  84 #define SMB_NODELAY             11      /* admin does not want a fail-delay */
  85 #define SMB_MIGRATE             12      /* Does no authentication, just
  86                                            updates the smb database. */
  87 #define SMB_CONF_FILE           13      /* Alternate location of smb.conf */
  88
  89 #define SMB_CTRLS_              14      /* number of ctrl arguments defined */
  90
  91 static const SMB_Ctrls smb_args[SMB_CTRLS_] = {
  92 /* symbol                 token name          ctrl mask      ctrl       *
  93  * ------------------     ------------------  -------------- ---------- */
  94
  95 /* SMB__OLD_PASSWD */    {  NULL,            _ALL_ON_,              01 },
  96 /* SMB__VERIFY_PASSWD */ {  NULL,            _ALL_ON_,              02 },
  97 /* SMB_AUDIT */          { "audit",          _ALL_ON_,              04 },
  98 /* SMB_USE_FIRST_PASS */ { "use_first_pass", _ALL_ON_^(030),       010 },
  99 /* SMB_TRY_FIRST_PASS */ { "try_first_pass", _ALL_ON_^(030),       020 },
 100 /* SMB_NOT_SET_PASS */   { "not_set_pass",   _ALL_ON_,             040 },
 101 /* SMB__NONULL */        {  "nonull",        _ALL_ON_,            0100 },
 102 /* SMB__QUIET */         {  NULL,            _ALL_ON_,            0200 },
 103 /* SMB_USE_AUTHTOK */    { "use_authtok",    _ALL_ON_,            0400 },
 104 /* SMB__NULLOK */        { "nullok",         _ALL_ON_^(0100),        0 },
 105 /* SMB_DEBUG */          { "debug",          _ALL_ON_,           01000 },
 106 /* SMB_NODELAY */        { "nodelay",        _ALL_ON_,           02000 },
 107 /* SMB_MIGRATE */        { "migrate",        _ALL_ON_^(0100),    04000 },
 108 /* SMB_CONF_FILE */      { "smbconf=",       _ALL_ON_,               0 },
 109 };
 110
 111 #define SMB_DEFAULTS  (smb_args[SMB__NONULL].flag)
 112
 113 /*
 114  * the following is used to keep track of the number of times a user fails
 115  * to authenticate themself.
 116  */
 117
 118 #define FAIL_PREFIX                     "-SMB-FAIL-"
 119 #define SMB_MAX_RETRIES                 3
 120
 121 struct _pam_failed_auth {
 122     char *user;                 /* user that's failed to be authenticated */
 123     int id;                     /* uid of requested user */
 124     char *agent;                /* attempt from user with name */
 125     int count;                  /* number of failures so far */
 126 };