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ERR_reason_error_string.3
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.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .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> \& \& char *ERR_error_string(unsigned long e, char *buf); \& void ERR_error_string_n(unsigned long e, char *buf, size_t len); \& \& 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" \&\fBERR_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. \&\fBERR_error_string_n()\fR is a variant of \fBERR_error_string()\fR that writes at most \fIlen\fR characters (including the terminating 0) and truncates the string if necessary. For \fBERR_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 .PP \&\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 \&\fBERR_lib_error_string()\fR, \fBERR_func_error_string()\fR and \&\fBERR_reason_error_string()\fR return the library name, function name and reason string respectively. .PP The OpenSSL error strings should be loaded by calling \&\fBERR_load_crypto_strings\fR\|(3) or, for \s-1SSL\s0 applications, \fBSSL_load_error_strings\fR\|(3) first. If there is no text string registered for the given error code, the error string will contain the numeric code. .PP \&\fBERR_print_errors\fR\|(3) can be used to print all error codes currently in the queue. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBERR_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 \&\fBERR_lib_error_string()\fR, \fBERR_func_error_string()\fR and \&\fBERR_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" \&\fBerr\fR\|(3), \fBERR_get_error\fR\|(3), \&\fBERR_load_crypto_strings\fR\|(3), \&\fBSSL_load_error_strings\fR\|(3) \&\fBERR_print_errors\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" \&\fBERR_error_string()\fR is available in all versions of SSLeay and OpenSSL. \&\fBERR_error_string_n()\fR was added in OpenSSL 0.9.6.