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ERR_reason_error_string (3)
  • >> ERR_reason_error_string (3) ( Разные man: Библиотечные вызовы )
  •  

    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
     
    

    SYNOPSIS

     #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);
    
    
     

    DESCRIPTION

    ERR_error_string() generates a human-readable string representing the error code e, and places it at buf. buf must be at least 120 bytes long. If buf is NULL, the error string is placed in a static buffer. ERR_error_string_n() is a variant of ERR_error_string() that writes at most len characters (including the terminating 0) and truncates the string if necessary. For ERR_error_string_n(), buf may not be NULL.

    The string will have the following format:

     error:[error code]:[library name]:[function name]:[reason string]
    
    

    error code is an 8 digit hexadecimal number, library name, function name and reason string are ASCII text.

    ERR_lib_error_string(), ERR_func_error_string() and ERR_reason_error_string() return the library name, function name and reason string respectively.

    The OpenSSL error strings should be loaded by calling ERR_load_crypto_strings(3) or, for SSL 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.

    ERR_print_errors(3) can be used to print all error codes currently in the queue.  

    RETURN VALUES

    ERR_error_string() returns a pointer to a static buffer containing the string if buf == NULL, buf otherwise.

    ERR_lib_error_string(), ERR_func_error_string() and ERR_reason_error_string() return the strings, and NULL if none is registered for the error code.  

    SEE ALSO

    err(3), ERR_get_error(3), ERR_load_crypto_strings(3), SSL_load_error_strings(3) ERR_print_errors(3)  

    HISTORY

    ERR_error_string() is available in all versions of SSLeay and OpenSSL. ERR_error_string_n() was added in OpenSSL 0.9.6.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    SEE ALSO
    HISTORY


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