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/* Configuration Manager for libwww
* CONFIGURATION MANAGER
*
* Author Tim Berners-Lee/CERN. Public domain. Please mail changes to
* timbl@info.cern.ch.
*
* The configuration information loaded includes tables (file suffixes,
* presentation methods) in other modules. The most likely routines needed by
* developers will be:
*
* HTSetConfiguration to load configuration information.
*
* HTLoadRules to load a whole file of configuration information
*
* HTTranslate to translate a URL using the rule table.
*
*/
#ifndef HTRULE_H
#define HTRULE_H
#ifndef HTUTILS_H
#include <HTUtils.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
HT_Invalid,
HT_Map,
HT_Pass,
HT_Fail,
HT_DefProt,
HT_Protect,
HT_Progress,
HT_InfoMsg,
HT_UserMsg,
HT_Alert,
HT_AlwaysAlert,
HT_Redirect,
HT_RedirectPerm,
HT_PermitRedir,
HT_UseProxy
} HTRuleOp;
#ifndef NO_RULES
/*
Server Side Script Execution
If a URL starts with /htbin/ it is understood to mean a script execution request on
server. This feature needs to be turned on by setting HTBinDir by the htbin rule.
Index searching is enabled by setting HTSearchScript into the name of script in BinDir
doing the actual search by search rule (BinDir must also be set in this case, of
course).
*/
extern char *HTBinDir; /* Physical /htbin location */
extern char *HTSearchScript; /* Search script name */
/*
HTAddRule: Add rule to the list
ON ENTRY,
pattern points to 0-terminated string containing a single "*"
equiv points to the equivalent string with * for the place where the
text matched by * goes; or to other 2nd parameter
meaning depends on op).
cond_op, additional condition for applying rule; cond_op should
cond be either NULL (no additional condition), or one of
the strings "if" or "unless"; if cond_op is not NULL,
cond should point to a recognized condition keyword
(as a string) such as "userspec", "redirected".
ON EXIT,
returns 0 if success, -1 if error.
Note that if BYTE_ADDRESSING is set, the three blocks required are allocated and
deallocated as one. This will save time and storage, when malloc's allocation units are
large.
*/
extern int HTAddRule(HTRuleOp op, const char *pattern,
const char *equiv,
const char *cond_op,
const char *cond);
/*
HTClearRules: Clear all rules
ON EXIT,
Rule file There are no rules
*/
extern void HTClearRules(void);
/*
HTTranslate: Translate by rules
*/
/*
ON ENTRY,
required points to a string whose equivalent value is needed
ON EXIT,
returns the address of the equivalent string allocated from the heap
which the CALLER MUST FREE. If no translation occurred, then it is
a copy of the original.
*/
extern char *HTTranslate(const char *required);
/*
HTSetConfiguration: Load one line of configuration information
ON ENTRY,
config is a string in the syntax of a rule file line.
This routine may be used for loading configuration information from sources other than
the rule file, for example INI files for X resources.
*/
extern int HTSetConfiguration(char *config);
/*
HtLoadRules: Load the rules from a file
ON ENTRY,
Rule table Rules can be in any state
ON EXIT,
Rule table Any existing rules will have been kept. Any new rules will have
been loaded on top, so as to be tried first.
Returns 0 if no error.
*/
extern int HTLoadRules(const char *filename);
/*
*/
#endif /* NO_RULES */
#ifdef __cplusplus
}
#endif
#endif /* HTRULE_H */
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