vger/main.c

#include "vger.c"

int
main(int argc, char **argv)
{
	char 		request[GEMINI_REQUEST_MAX]  = {'\0'};
	char 		user[_SC_LOGIN_NAME_MAX]     = {'\0'};
	char 		hostname[GEMINI_REQUEST_MAX] = {'\0'};
	char 		query[PATH_MAX]              = {'\0'};
	char 		path[PATH_MAX]               = {'\0'};
	char 		chroot_dir[PATH_MAX]         = DEFAULT_CHROOT;
	char 		file[FILENAME_MAX]           = DEFAULT_INDEX;
	char 		dir[PATH_MAX]                = {'\0'};
	int		option                       = 0;
	int		virtualhost                  = 0;

	/*
	 * request : contain the whole request from client : gemini://...\r\n
	 * user : username, used in drop_privileges()
	 * hostname : extracted from hostname. used with virtualhosts and cgi SERVER_NAME
	 * query : file requested in cgi : gemini://...?query
	 * file : file basename to display. Emtpy is a directory has been requested
	 * dir : directory requested. vger will chdir() in to find file
	 * pos : used to parse request and split into interesting parts
	 */

	while ((option = getopt(argc, argv, ":d:l:m:u:c:vi")) != -1) {
		switch (option) {
		case 'd':
			estrlcpy(chroot_dir, optarg, sizeof(chroot_dir));
			break;
		case 'l':
			estrlcpy(lang, "lang=", sizeof(lang));
			estrlcat(lang, optarg, sizeof(lang));
			break;
		case 'm':
			estrlcpy(default_mime, optarg, sizeof(default_mime));
			break;
		case 'u':
			estrlcpy(user, optarg, sizeof(user));
			break;
		case 'c':
			estrlcpy(cgi_dir, optarg, sizeof(cgi_dir));
			break;
		case 'v':
			virtualhost = 1;
			break;
		case 'i':
			doautoidx = 1;
			break;
		}
	}

	/*
	 * do chroot if an user is supplied
	 */
	drop_privileges(user, chroot_dir, cgi_dir);

	check_request(request);
	get_hostname(request, hostname, sizeof(hostname));
	get_path(request, path, sizeof(path), virtualhost, hostname);
	get_query(path, query, sizeof(query));

	/* percent decode */
	uridecode(query);
	uridecode(path);

	/* is it cgi ? */
	if (*cgi_dir)
		if (do_cgi(chroot_dir, cgi_dir, path, hostname, query) == 0)
			stop(EXIT_SUCCESS, NULL);

	/* *** from here, cgi didn't run ***
	 * check if path available
	 */
	check_path(path, sizeof(path), hostname, virtualhost);

	/* split dir and filename */
	get_dir_file(path, dir, sizeof(dir), file, sizeof(file));

	/* go to dir */
	echdir(dir);

	/* regular file to stdout */
	display_file(file);

	stop(EXIT_SUCCESS, NULL);
}