vger/vger.h

#ifndef vger_h_INCLUDED
#define vger_h_INCLUDED

/* length of "gemini://" */
#define GEMINI_PART	 9

/*
 * number of bytes to read with fgets() : 2014 + 1.
 * fgets() reads at most size-1 (1024 here).
 * See https://gemini.circumlunar.space/docs/specification.html.
 */
#define GEMINI_REQUEST_MAX 1025

/* max subexpression in regex : 3 + 1 */
#define SE_MAX 4

/* gemini_regex:
 * =============
 * ^gemini://+ : in case of gemini:///
 * 1: hostname
 *	([^/|^\?|^:]*) :
 *		catch everything, stop when /, ? or : is found
 *		don't catch :port
 *	[:[0-9]*]? : skip :1234 (port number) if any
 *	/ * : skip "/" if any
 * 2: path
 *	([^\?]*) :
 *		catch everything and stop at ? if any
 * 3 : query
 *	[\?]?(.*)$:
 *		catch everything after ? if any
 */
static const char *_gemini_regex =
	"^gemini://+([^/|^\?|^:]*)[:[0-9]*]?/*([^\?]*)[\?]?(.*)$";

/* global vars */
static int	_retcode = 0;
static ssize_t	_datasiz = 0;
static char 	_request[GEMINI_REQUEST_MAX]  = {'\0'};

/* functions */
ssize_t 	autoindex(const char *);
void		cgi(const char *);
char *		check_request(char *);
void		check_path(char *, size_t, const char *, int);
ssize_t		display_file(const char *);
int		do_cgi(const char *, const char *, const char *, const char *, const char *);
void 		drop_privileges(const char *, const char *, const char *);
void		get_dir_file(char *, char *, size_t, char *, size_t);
char *		get_hostname(const char *, char *, size_t);
char *		get_path(const char *, char *, size_t, int, const char *);
char *		get_query(char *, char *, size_t);
void		status(const int, const char *, ...);
void		strip_trailing_slash(char *);
int 		uridecode (char *);
void		split_request(const char *, char *, char *, char *);
void		stop(const int, const char *, ...);

#endif // vger_h_INCLUDED