mandir = $(prefix)/share/man

all: filed

filed: filed.o
	$(CC) $(CFLAGS) $(LDFLAGS) -o "$@" $^ $(LIBS)

filed.o: filed.c filed-mime-types.h

filed-mime-types.h: generate-mime-types
	./generate-mime-types > filed-mime-types.h

install: filed filed.1
	test -d "$(DESTDIR)$(mandir)/man1" || mkdir -p "$(DESTDIR)$(mandir)/man1"
	test -d "$(DESTDIR)$(bindir)" || mkdir -p "$(DESTDIR)$(bindir)"
	cp filed.1 "$(DESTDIR)$(mandir)/man1/"
	cp filed "$(DESTDIR)$(bindir)/"

clean:
	rm -f filed filed.o

distclean: clean

mrproper: distclean
	rm -f filed-mime-types.h

.PHONY: all install clean distclean mrproper

#include <errno.h>
#include <time.h>
#include <pwd.h>

/* Compile time constants */
#define FILED_SENDFILE_MAX 16777215
#define MAX_FAILURE_COUNT 30
#define FILED_DEFAULT_TYPE "application/octet-stream"

/* Default values */
#define PORT 80
#define THREAD_COUNT 5
#define BIND_ADDR "::"
#define CACHE_SIZE 8209

/* Arguments for worker threads */
struct filed_worker_thread_args {
	int fd;
};

/* File information */
struct filed_fileinfo {
	pthread_mutex_t mutex;
	char *path;
	int fd;
	off_t len;
	char *lastmod;
	char lastmod_b[64];
	const char *type;
};

/* Request variables */
struct filed_http_request {
	/** Buffers **/
	struct filed_fileinfo fileinfo;
	char path_b[1010];

		}

		if (prev < curr) {
			diff = curr - prev;
		} else {
			diff = prev - curr;
		}

		prev = curr;

		retval <<= 3;
		retval &= 0xFFFFFFFFLU;
		retval ^= diff;

		value++;
	}

	retval = retval % modulus;

	return(retval);
}

/* Find a mime-type based on the filename */
static const char *filed_determine_mimetype(const char *path) {
	const char *p;

	p = strrchr(path, '.');
	if (p == NULL) {
		return(FILED_DEFAULT_TYPE);
	}

	p++;
	if (*p == '\0') {
		return(FILED_DEFAULT_TYPE);
	}

	filed_log_msg_debug("Looking up MIME type for %s (hash = %llu)", p, (unsigned long long) filed_hash((const unsigned char *) p, 16777259));

#include "filed-mime-types.h"

	return(FILED_DEFAULT_TYPE);
}

/* Open a file and return file information */
static struct filed_fileinfo *filed_open_file(const char *path, struct filed_fileinfo *buffer) {
	struct filed_fileinfo *cache;
	unsigned int cache_idx;
	off_t len;
	int fd;

		len = lseek(fd, 0, SEEK_END);
		lseek(fd, 0, SEEK_SET);

		cache->fd = fd;
		cache->len = len;
		cache->path = strdup(path);
		cache->type = filed_determine_mimetype(path);

		/* XXX:TODO: Determine */

		cache->lastmod = filed_format_time(cache->lastmod_b, sizeof(cache->lastmod_b), time(NULL) - 30);
	} else {
		filed_log_msg_debug("Cache hit for idx: %lu: PATH \"%s\"", (unsigned long) cache_idx, path);
	}

	/*
	 * We have to make a duplicate FD, because once we release the cache

#! /usr/bin/env tclsh

set modulus 16777259

proc filed_hash {str mod} {
	set retval [expr {$mod - 1}]
	set prev [expr {$mod % 255}]
	for {set idx 0} {$idx < [string length $str]} {incr idx} {
		set curr [string index $str $idx]
		binary scan $curr H* curr
		set curr [format %u 0x$curr]

		if {$curr < 32} {
			set curr [expr {255 - $curr}]
		} else {
			set curr [expr {$curr - 32}]
		}

		if {$prev < $curr} {
			set diff [expr {$curr - $prev}]
		} else {
			set diff [expr {$prev - $curr}]
		}

		set prev $curr

		set retval [expr {($retval << 3) & 0xffffffff}]
		set retval [expr {$retval ^ $diff}]
	}

	set retval [expr {$retval % $mod}]

	return $retval

}

set mimeinfofile "/etc/httpd/mime.types"

set fd [open $mimeinfofile]
set mimeinfo [read $fd]
close $fd

foreach line [split $mimeinfo "\n"] {
	regsub {#.*} $line {} line
	set line [string trim $line]

	if {$line == ""} {
		continue
	}

	set line [split $line]

	set mime [lindex $line 0]
	set extensions [lrange $line 1 end]

	foreach extension $extensions {
		if {$extension == ""} {
			continue
		}

		set extensioninfo($extension) $mime
	}
}

foreach extension [array names extensioninfo] {
	set hash_id [filed_hash $extension $modulus]

	lappend hashinfo($hash_id) $extension

}
puts "\tswitch (filed_hash((const unsigned char *) p, $modulus)) \{"
foreach hash [lsort -integer -increasing [array names hashinfo]] {
	puts "\t\tcase $hash:"
	foreach extension $hashinfo($hash) {
		puts "\t\t\tif (strcmp(p, \"$extension\") == 0) \{"
		puts "\t\t\t\treturn(\"$extensioninfo($extension)\");"
		puts "\t\t\t\}"
	}
	puts "\t\t\treturn(FILED_DEFAULT_TYPE);"
}
puts "\t\}"