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+.\" Automatically generated by Pod::Man version 1.15
+.\" Thu May 9 13:17:32 2002
+.\"
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+..
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+.\" ======================================================================
+.\"
+.IX Title "ERR_ERROR_STRING 1"
+.TH ERR_ERROR_STRING 1 "perl v5.6.1" "2000-11-13" "User Contributed Perl Documentation"
+.UC
+.SH "NAME"
+ERR_error_string, ERR_error_string_n, ERR_lib_error_string,
+ERR_func_error_string, ERR_reason_error_string \- obtain human-readable
+error message
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <openssl/err.h>
+.Ve
+.Vb 2
+\& char *ERR_error_string(unsigned long e, char *buf);
+\& char *ERR_error_string_n(unsigned long e, char *buf, size_t len);
+.Ve
+.Vb 3
+\& const char *ERR_lib_error_string(unsigned long e);
+\& const char *ERR_func_error_string(unsigned long e);
+\& const char *ERR_reason_error_string(unsigned long e);
+.Ve
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+\&\fIERR_error_string()\fR generates a human-readable string representing the
+error code \fIe\fR, and places it at \fIbuf\fR. \fIbuf\fR must be at least 120
+bytes long. If \fIbuf\fR is \fB\s-1NULL\s0\fR, the error string is placed in a
+static buffer.
+\&\fIERR_error_string_n()\fR is a variant of \fIERR_error_string()\fR that writes
+at most \fIlen\fR characters (including the terminating 0)
+and truncates the string if necessary.
+For \fIERR_error_string_n()\fR, \fIbuf\fR may not be \fB\s-1NULL\s0\fR.
+.PP
+The string will have the following format:
+.PP
+.Vb 1
+\& error:[error code]:[library name]:[function name]:[reason string]
+.Ve
+\&\fIerror code\fR is an 8 digit hexadecimal number, \fIlibrary name\fR,
+\&\fIfunction name\fR and \fIreason string\fR are \s-1ASCII\s0 text.
+.PP
+\&\fIERR_lib_error_string()\fR, \fIERR_func_error_string()\fR and
+\&\fIERR_reason_error_string()\fR return the library name, function
+name and reason string respectively.
+.PP
+The OpenSSL error strings should be loaded by calling
+ERR_load_crypto_strings(3) or, for \s-1SSL\s0
+applications, SSL_load_error_strings(3)
+first.
+If there is no text string registered for the given error code,
+the error string will contain the numeric code.
+.PP
+ERR_print_errors(3) can be used to print
+all error codes currently in the queue.
+.SH "RETURN VALUES"
+.IX Header "RETURN VALUES"
+\&\fIERR_error_string()\fR returns a pointer to a static buffer containing the
+string if \fIbuf\fR \fB== \s-1NULL\s0\fR, \fIbuf\fR otherwise.
+.PP
+\&\fIERR_lib_error_string()\fR, \fIERR_func_error_string()\fR and
+\&\fIERR_reason_error_string()\fR return the strings, and \fB\s-1NULL\s0\fR if
+none is registered for the error code.
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+err(3), ERR_get_error(3),
+ERR_load_crypto_strings(3),
+SSL_load_error_strings(3)
+ERR_print_errors(3)
+.SH "HISTORY"
+.IX Header "HISTORY"
+\&\fIERR_error_string()\fR is available in all versions of SSLeay and OpenSSL.
+\&\fIERR_error_string_n()\fR was added in OpenSSL 0.9.6.
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