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diff --git a/doc/conf.doc b/doc/conf.doc deleted file mode 100644 index f12fe884f5..0000000000 --- a/doc/conf.doc +++ /dev/null @@ -1,89 +0,0 @@ -The CONF library. - -The CONF library is a simple set of routines that can be used to configure -programs. It is a superset of the genenv() function with some extra -structure. - -The library consists of 5 functions. - -LHASH *CONF_load(LHASH *config,char *file); -This function is called to load in a configuration file. Multiple -configuration files can be loaded, with each subsequent 'load' overwriting -any already defined 'variables'. If there is an error, NULL is returned. -If config is NULL, a new LHASH structure is created and returned, otherwise -the new data in the 'file' is loaded into the 'config' structure. - -void CONF_free(LHASH *config); -This function free()s the data in config. - -char *CONF_get_string(LHASH *config,char *section,char *name); -This function returns the string found in 'config' that corresponds to the -'section' and 'name' specified. Classes and the naming system used will be -discussed later in this document. If the variable is not defined, an NULL -is returned. - -long CONF_get_long(LHASH *config,char *section, char *name); -This function is the same as CONF_get_string() except that it converts the -string to an long and returns it. If variable is not a number or the -variable does not exist, 0 is returned. This is a little problematic but I -don't know of a simple way around it. - -STACK *CONF_get_section(LHASH *config, char *section); -This function returns a 'stack' of CONF_VALUE items that are all the -items defined in a particular section. DO NOT free() any of the -variable returned. They will disappear when CONF_free() is called. - -The 'lookup' model. -The configuration file is divided into 'sections'. Each section is started by -a line of the form '[ section ]'. All subsequent variable definitions are -of this section. A variable definition is a simple alpha-numeric name -followed by an '=' and then the data. A section or variable name can be -described by a regular expression of the following form '[A-Za-z0-9_]+'. -The value of the variable is the text after the '=' until the end of the -line, stripped of leading and trailing white space. -At this point I should mention that a '#' is a comment character, \ is the -escape character, and all three types of quote can be used to stop any -special interpretation of the data. -Now when the data is being loaded, variable expansion can occur. This is -done by expanding any $NAME sequences into the value represented by the -variable NAME. If the variable is not in the current section, the different -section can be specified by using the $SECTION::NAME form. The ${NAME} form -also works and is very useful for expanding variables inside strings. - -When a variable is looked up, there are 2 special section. 'default', which -is the initial section, and 'ENV' which is the processes environment -variables (accessed via getenv()). When a variable is looked up, it is -first 'matched' with it's section (if one was specified), if this fails, the -'default' section is matched. -If the 'lhash' variable passed was NULL, the environment is searched. - -Now why do we bother with sections? So we can have multiple programs using -the same configuration file, or multiple instances of the same program -using different variables. It also provides a nice mechanism to override -the processes environment variables (eg ENV::HOME=/tmp). If there is a -program specific variable missing, we can have default values. -Multiple configuration files can be loaded, with each new value clearing -any predefined values. A system config file can provide 'default' values, -and application/usr specific files can provide overriding values. - -Examples - -# This is a simple example -SSLEAY_HOME = /usr/local/ssl -ENV::PATH = $SSLEAY_HOME/bin:$PATH # override my path - -[X509] -cert_dir = $SSLEAY_HOME/certs # /usr/local/ssl/certs - -[SSL] -CIPHER = DES-EDE-MD5:RC4-MD5 -USER_CERT = $HOME/${USER}di'r 5' # /home/eay/eaydir 5 -USER_CERT = $HOME/\${USER}di\'r # /home/eay/${USER}di'r -USER_CERT = "$HOME/${US"ER}di\'r # $HOME/${USER}di'r - -TEST = 1234\ -5678\ -9ab # TEST=123456789ab -TTT = 1234\n\n # TTT=1234<nl><nl> - - |