1.\"	$OpenBSD: ERR_load_strings.3,v 1.7 2018/03/27 17:35:50 schwarze Exp $
2.\"	OpenSSL 05ea606a May 20 20:52:46 2016 -0400
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51.Dd $Mdocdate: March 27 2018 $
52.Dt ERR_LOAD_STRINGS 3
53.Os
54.Sh NAME
55.Nm ERR_load_strings ,
56.Nm ERR_PACK ,
57.Nm ERR_get_next_error_library
58.Nd load arbitrary OpenSSL error strings
59.Sh SYNOPSIS
60.In openssl/err.h
61.Ft void
62.Fo ERR_load_strings
63.Fa "int lib"
64.Fa "ERR_STRING_DATA str[]"
65.Fc
66.Ft unsigned long
67.Fo ERR_PACK
68.Fa "int lib"
69.Fa "int func"
70.Fa "int reason"
71.Fc
72.Ft int
73.Fn ERR_get_next_error_library void
74.Sh DESCRIPTION
75.Fn ERR_load_strings
76registers error strings for library number
77.Fa lib .
78.Pp
79.Fa str
80is an array of error string data:
81.Bd -literal -offset indent
82typedef struct ERR_string_data_st
83{
84        unsigned long error;
85        char *string;
86} ERR_STRING_DATA;
87.Ed
88.Pp
89The error code is generated from the library number and a function and
90reason code:
91.Pp
92.Dl error = ERR_PACK(lib, func, reason)
93.Pp
94.Fn ERR_PACK
95is a macro.
96.Pp
97The last entry in the array is
98.Brq 0 , Dv NULL .
99.Pp
100.Fn ERR_get_next_error_library
101can be used to assign library numbers to user libraries at runtime.
102.Sh RETURN VALUES
103.Fn ERR_PACK
104returns the error code.
105.Fn ERR_get_next_error_library
106returns a new library number.
107.Sh SEE ALSO
108.Xr ERR 3
109.Sh HISTORY
110.Fn ERR_load_strings
111and
112.Fn ERR_PACK
113first appeared in SSLeay 0.4.4.
114.Fn ERR_get_next_error_library
115first appeared in SSLeay 0.9.0.
116These functions have been available since
117.Ox 2.4 .
118