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