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Add line breaks that rustfmt ate back to documentation.
author Paul Fisher <paul@pfish.zone>
date Thu, 31 Jul 2025 15:42:12 -0400
parents 0730f5f2ee2a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 use std::ffi::{c_char, c_int, c_uint, c_void};
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2 use std::fmt;
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3 use std::marker::{PhantomData, PhantomPinned};
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4
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5 /// An opaque structure that PAM uses to communicate.
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6 ///
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7 /// This is only ever returned in pointer form and cannot be constructed.
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8 #[repr(C)]
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9 pub struct pam_handle {
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10 _value: (),
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11 _marker: PhantomData<(PhantomPinned, *mut c_void)>,
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12 }
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13
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14 impl fmt::Debug for pam_handle {
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15 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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16 write!(f, "pam_handle({self:p}")
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17 }
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18 }
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19
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20 /// Used by PAM to communicate between the module and the application.
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21 #[repr(C)]
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22 #[derive(Debug)]
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23 pub struct pam_conv {
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24 pub conv: unsafe extern "C" fn(
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25 num_msg: c_int,
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26 msg: *const *const pam_message,
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27 resp: *mut *mut pam_response,
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28 appdata: *mut c_void,
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29 ) -> c_int,
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30 pub appdata_ptr: *mut c_void,
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31 }
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32
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33 /// A message sent into a PAM conversation.
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34 #[repr(C)]
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35 #[derive(Debug)]
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36 pub struct pam_message {
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37 pub msg_style: c_int,
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38 pub msg: *const c_char,
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39 }
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40
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41 /// A response returned from a PAM conversation.
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42 #[repr(C)]
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43 #[derive(Debug)]
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44 pub struct pam_response {
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45 pub resp: *mut c_char,
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46 /// Completely unused.
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47 pub resp_retcode: c_int,
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48 }
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50 /// Definition of the PAM_XAUTHDATA item. Compatible with `xcb_auth_info_t`.
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51 #[cfg(pam_impl = "LinuxPam")]
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52 #[repr(C)]
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53 pub struct pam_xauth_data {
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54 pub namelen: c_int,
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55 pub name: *mut c_char,
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56 pub datalen: c_int,
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57 pub data: *mut c_char,
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58 }
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59
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60 #[cfg(pam_impl = "LinuxPam")]
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61 #[derive(Debug)]
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62 #[repr(C)]
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63 pub struct pam_modutil_privs {
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64 pub grplist: *mut libc::gid_t,
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65 pub number_of_groups: c_int,
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66 pub allocated: c_int,
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67 pub old_gid: libc::gid_t,
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68 pub old_uid: libc::uid_t,
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69 pub is_dropped: c_int,
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70 }
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71
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72 #[cfg(pam_impl = "OpenPam")]
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73 pub type pam_func_t = unsafe extern "C" fn(
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74 handle: *mut pam_handle,
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75 flags: c_int,
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76 argc: c_int,
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77 argv: *const *const c_char,
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78 ) -> c_int;
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79
134
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80 #[cfg(pam_impl = "OpenPam")]
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81 #[derive(Debug)]
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82 #[repr(C)]
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83 pub struct pam_module {
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84 pub path: *mut c_char,
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85 pub func: [pam_func_t; 6],
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86 pub dlh: *mut c_void,
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87 }
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88
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89 #[cfg(any(pam_impl = "OpenPam", pam_impl = "Sun"))]
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90 #[derive(Debug)]
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91 #[repr(C)]
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92 pub struct pam_repository {
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93 pub type_: *mut c_char,
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94 pub scope: *mut c_void,
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95 pub scope_len: usize,
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96 }
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97
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98 // These are the functions specified in X/SSO. Everybody exports them.
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99 extern "C" {
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100 /// Account validation.
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101 pub fn pam_acct_mgmt(pamh: *mut pam_handle, flags: c_int) -> c_int;
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102
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103 /// Authenticate a user.
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104 pub fn pam_authenticate(pamh: *mut pam_handle, flags: c_int) -> c_int;
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105
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106 // Nobody implements pam_authenticate_secondary.
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107
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108 /// Manage authentication tokens.
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109 pub fn pam_chauthtok(pamh: *mut pam_handle, flags: c_int) -> c_int;
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110
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111 /// Close an opened user session.
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112 pub fn pam_close_session(pamh: *mut pam_handle, flags: c_int) -> c_int;
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113
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114 /// Ends the PAM transaction.
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115 pub fn pam_end(pamh: *mut pam_handle, flags: c_int) -> c_int;
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116
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117 /// Gets module-specific data. PAM still owns the data.
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118 pub fn pam_get_data(
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119 pamh: *const pam_handle,
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120 module_data_name: *const c_char,
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121 data: *mut *const c_void,
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122 ) -> c_int;
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123
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124 /// Gets an environment variable. You own the return value.
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125 pub fn pam_getenv(pamh: *const pam_handle, name: *const c_char) -> *mut c_char;
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126
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127 /// Gets all the environment variables. You own everything it points to.
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128 pub fn pam_getenvlist(pamh: *const pam_handle) -> *mut *mut c_char;
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129
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130 /// Get information about the transaction.
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131 ///
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132 /// The item is owned by PAM.
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133 pub fn pam_get_item(
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134 pamh: *const pam_handle,
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135 item_type: c_int,
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136 item: *mut *const c_void,
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137 ) -> c_int;
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138
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139 // Nobody implements pam_get_mapped_authtok.
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140 // Nobody implements pam_get_mapped_username.
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141
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142 /// Get the username. PAM owns it.
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143 pub fn pam_get_user(
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144 pamh: *mut pam_handle,
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145 user: *mut *const c_char,
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146 prompt: *const c_char,
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147 ) -> c_int;
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148
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149 /// Opens a user session.
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150 pub fn pam_open_session(pamh: *mut pam_handle, flags: c_int) -> c_int;
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151
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152 /// Sets the value of an environment variable. `namevalue` is copied.
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153 pub fn pam_putenv(pamh: *mut pam_handle, namevalue: *const c_char) -> c_int;
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154
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155 /// Update or delete user credentials.
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156 pub fn pam_setcred(pamh: *mut pam_handle, flags: c_int) -> c_int;
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157
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158 /// Set module-specific data. PAM will call `cleanup` when completed.
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159 pub fn pam_set_data(
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160 pamh: *mut pam_handle,
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161 module_data_name: *const c_char,
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162 data: *mut c_void,
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163 cleanup: unsafe extern "C" fn(
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164 pamh: *mut pam_handle,
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165 data: *mut c_void,
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166 pam_end_status: c_int,
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167 ),
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168 ) -> c_int;
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169
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170 /// Set information about the transaction. The `item` is copied.
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171 pub fn pam_set_item(pamh: *mut pam_handle, item_type: c_int, item: *const c_void) -> c_int;
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172
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173 // Nobody implements pam_set_mapped_authtok.
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174 // Nobody implements pam_set_mapped_username.
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175
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176 // The pam_sm_whatever functions are prototypes for the functions that
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177 // a PAM module should implement, not symbols provided by PAM.
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178
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179 /// Starts a PAM transaction. The `conv` may or may not be copied.
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180 pub fn pam_start(
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181 service: *const c_char,
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182 user: *const c_char,
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183 pam_conv: *mut pam_conv,
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184 pamh: *mut *mut pam_handle,
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185 ) -> c_int;
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186
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187 /// Gets a statically-allocated error string.
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188 ///
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189 /// All implementations of PAM known to this library (Linux-PAM, OpenPAM,
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190 /// and Sun) ignore `pamh` and will accept a null pointer.
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191 pub fn pam_strerror(pamh: *const pam_handle, error_number: c_int) -> *mut c_char;
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192 }
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193
134
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194 #[cfg(any(pam_impl = "LinuxPam", pam_impl = "OpenPam"))]
127
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195 extern "C" {
131
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196 /// Gets `PAM_AUTHTOK`, or asks the user if that is unset.
130
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197 pub fn pam_get_authtok(
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198 pamh: *mut pam_handle,
131
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199 item: c_int,
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200 authtok: *mut *const c_char,
130
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201 prompt: *const c_char,
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202 ) -> c_int;
133
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203
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204 pub fn pam_prompt(
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205 pamh: *const pam_handle,
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206 style: c_int,
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207 response: *mut *mut c_char,
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208 fmt: *const c_char,
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209 ...
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210 ) -> c_int;
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211
127
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212 }
131
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213
134
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214 #[cfg(pam_impl = "LinuxPam")]
131
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215 extern "C" {
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216 pub fn pam_fail_delay(pamh: *mut pam_handle, musec_delay: c_uint) -> c_int;
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217
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218 /// Start a PAM transaction based on configuration in the given directory.
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219 pub fn pam_start_confdir(
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220 service_name: *const c_char,
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221 user: *const c_char,
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222 pam_conversation: *mut pam_conv,
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223 confdir: *const c_char,
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224 pamh: *mut *mut pam_handle,
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225 ) -> c_int;
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226
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227 // We don't export the v-variants of the formatting functions.
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228
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229 pub fn pam_syslog(pamh: *const pam_handle, priority: c_int, fmt: *const c_char, ...);
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230
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231 pub fn pam_get_authtok_noverify(
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232 pamh: *const pam_handle,
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233 authtok: *mut *const c_char,
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234 prompt: *const c_char,
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235 ) -> c_int;
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236
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237 pub fn pam_get_authtok_verify(
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238 pamh: *const pam_handle,
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239 authtok: *mut *const c_char,
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240 prompt: *const c_char,
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241 ) -> c_int;
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242
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243 // pam_modutil also lives in libpam for Linux.
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244
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245 pub fn pam_modutil_check_user_in_passwd(
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246 pamh: *mut pam_handle,
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247 user_name: *const c_char,
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248 file_name: *const c_char,
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249 ) -> c_int;
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250
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251 pub fn pam_modutil_getpwnam(pamh: *mut pam_handle, user: *const c_char) -> *mut libc::passwd;
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252
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253 pub fn pam_modutil_getpwuid(pamh: *mut pam_handle, uid: libc::uid_t) -> *mut libc::passwd;
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254
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255 pub fn pam_modutil_getgrnam(pamh: *mut pam_handle, group: *const c_char) -> *mut libc::group;
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256
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257 pub fn pam_modutil_getgrgid(pamh: *mut pam_handle, gid: libc::gid_t) -> *mut libc::group;
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258
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259 pub fn pam_modutil_getspnam(pamh: *mut pam_handle, user: *const c_char) -> *mut libc::spwd;
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260
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261 pub fn pam_modutil_user_in_group_nam_nam(
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262 pamh: *mut pam_handle,
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263 user: *const c_char,
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264 group: *const c_char,
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265 ) -> c_int;
158
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266
131
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267 pub fn pam_modutil_user_in_group_nam_gid(
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268 pamh: *mut pam_handle,
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269 user: *const c_char,
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270 group: libc::gid_t,
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271 ) -> c_int;
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272
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273 pub fn pam_modutil_user_in_group_uid_nam(
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274 pamh: *mut pam_handle,
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275 user: libc::uid_t,
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276 group: *const c_char,
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277 ) -> c_int;
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278
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279 pub fn pam_modutil_user_in_group_uid_gid(
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280 pamh: *mut pam_handle,
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281 user: libc::uid_t,
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282 group: libc::gid_t,
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283 ) -> c_int;
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284
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285 pub fn pam_modutil_getlogin(pamh: *mut pam_handle) -> *const c_char;
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286
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287 pub fn pam_modutil_read(fd: c_int, buffer: *mut c_char, count: c_int) -> c_int;
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288
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289 pub fn pam_modutil_write(fd: c_int, buffer: *const c_char, count: c_int) -> c_int;
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290
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291 pub fn pam_modutil_audit_write(
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292 pamh: *mut pam_handle,
137
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293 type_: c_int,
131
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294 message: *const c_char,
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295 retval: c_int,
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296 ) -> c_int;
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297
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298 pub fn pam_modutil_drop_priv(
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299 pamh: *mut pam_handle,
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300 p: *mut pam_modutil_privs,
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301 pw: *const libc::passwd,
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302 ) -> c_int;
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303
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304 pub fn pam_modutil_regain_priv(pamh: *mut pam_handle, p: *mut pam_modutil_privs) -> c_int;
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305
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306 pub fn pam_modutil_sanitize_helper_fds(
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307 pamh: *mut pam_handle,
176
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308 redirect_stdin: super::constants::pam_modutil_redirect_fd,
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309 redirect_stdout: super::constants::pam_modutil_redirect_fd,
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310 redirect_stderr: super::constants::pam_modutil_redirect_fd,
131
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311 ) -> c_int;
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312
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313 pub fn pam_modutil_search_key(
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314 pamh: *mut pam_handle,
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315 file_name: *const c_char,
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316 key: *const c_char,
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317 ) -> *mut c_char;
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318 }
133
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319
134
6c1e1bdb4164 Use standard #[cfg] directives rather than custom proc macros.
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320 #[cfg(pam_impl = "OpenPam")]
133
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321 extern "C" {
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322 pub fn openpam_borrow_cred(pamh: *mut pam_handle, passwd: *const libc::passwd) -> c_int;
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323
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324 pub fn openpam_subst(
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325 pamh: *const pam_handle,
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326 buf: *mut c_char,
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327 _bufsize: *mut usize,
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328 _template: *const c_char,
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329 ) -> c_int;
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330
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331 pub fn openpam_free_data(pamh: *mut pam_handle, data: *mut c_void, status: c_int);
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332
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333 pub fn openpam_free_envlist(_envlist: *mut *mut c_char);
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334
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335 pub fn openpam_get_option(_pamh: *mut pam_handle, _option: *const c_char) -> *const c_char;
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336
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337 pub fn openpam_restore_cred(pamh: *mut pam_handle) -> c_int;
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338
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339 pub fn openpam_set_option(
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340 _pamh: *mut pam_handle,
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341 _option: *const c_char,
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342 _value: *const c_char,
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343 ) -> c_int;
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344
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345 pub fn pam_error(pamh: *const pam_handle, _fmt: *const c_char, ...) -> c_int;
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346
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347 pub fn pam_info(_pamh: *const pam_handle, _fmt: *const c_char, ...) -> c_int;
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348
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349 pub fn openpam_readline(
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350 _f: *mut libc::FILE,
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351 _lineno: *mut c_int,
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352 _lenp: *mut usize,
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353 ) -> *mut c_char;
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354
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355 pub fn openpam_readlinev(
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356 _f: *mut libc::FILE,
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357 _lineno: *mut c_int,
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358 _lenp: *mut c_int,
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359 ) -> *mut *mut c_char;
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360
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361 pub fn openpam_readword(
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362 _f: *mut libc::FILE,
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363 _lineno: *mut c_int,
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364 _lenp: *mut usize,
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365 ) -> *mut c_char;
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366
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367 pub fn openpam_straddch(
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368 _str: *mut *mut c_char,
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369 _sizep: *mut usize,
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370 _lenp: *mut usize,
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371 ch: c_int,
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372 ) -> c_int;
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373
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374 pub fn openpam_set_feature(_feature: c_int, _onoff: c_int) -> c_int;
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375
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376 pub fn openpam_get_feature(_feature: c_int, _onoff: *mut c_int) -> c_int;
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377
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378 pub fn _openpam_log(_level: c_int, _func: *const c_char, _fmt: *const c_char, ...);
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379
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380 /// A premade conversation function that talks to the TTY.
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381 ///
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382 /// ```no_run
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383 /// # use std::ffi::CString;
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384 /// # use std::ptr;
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385 /// use libpam_sys::*;
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386 /// # let service = CString::new("whatever").unwrap();
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387 /// # let user = CString::new("whatever").unwrap();
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388 /// let mut handle: *mut pam_handle = ptr::null_mut();
174
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389 /// let mut conv = pam_conv {
133
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390 /// conv: openpam_ttyconv,
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391 /// appdata_ptr: ptr::null_mut(),
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392 /// };
174
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393 /// let result = unsafe { pam_start(service.as_ptr(), user.as_ptr(), &mut conv, &mut handle) };
133
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394 /// ```
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395 pub fn openpam_ttyconv(
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396 n: c_int,
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397 _msg: *const *const pam_message,
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398 _resp: *mut *mut pam_response,
154
f71bfffb6de1 fix remaining AppDatas in libpam-sys
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399 _data: *mut c_void,
133
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diff changeset
400 ) -> c_int;
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401
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402 pub static mut openpam_ttyconv_timeout: c_int;
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403
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404 /// A null conversation function.
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405 ///
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406 /// ```no_run
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407 /// # use std::ffi::CString;
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408 /// # use std::ptr;
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409 /// use libpam_sys::*;
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410 /// # let service = CString::new("whatever").unwrap();
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411 /// # let user = CString::new("whatever").unwrap();
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412 /// let mut handle: *mut pam_handle = ptr::null_mut();
174
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413 /// let mut conv = pam_conv {
133
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414 /// conv: openpam_nullconv,
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415 /// appdata_ptr: ptr::null_mut(),
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416 /// };
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417 /// let result = unsafe { pam_start(service.as_ptr(), user.as_ptr(), &mut conv, &mut handle) };
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418 /// ```
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419 pub fn openpam_nullconv(
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420 n: c_int,
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421 _msg: *const *const pam_message,
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422 _resp: *mut *mut pam_response,
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423 _data: *mut c_void,
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424 ) -> c_int;
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425 }
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426
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427 #[cfg(pam_impl = "Sun")]
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428 extern "C" {
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429 pub fn __pam_get_authtok(
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430 pamh: *mut pam_handle,
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431 source: c_int,
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432 type_: c_int,
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433 prompt: *const c_char,
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434 authtok: *mut *mut c_char,
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435 ) -> c_int;
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436
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437 pub fn __pam_log(priority: c_int, format: *const c_char, ...);
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438 }