#include <u.h>
#include <libc.h>
#include <auth.h>
#include <fcall.h>
#include <thread.h>
#include <9p.h>
#include "ncp.h"

struct {
	char *name;
	int (*func)(Fmt *f);
	char *buf;
	int len;
} Infdir[] = {
	{ "Who" , who },
	{ "Users" , users },
	{ "Groups" , groups },
	{ "Session" , session },
	{ "Servers" , servers },
	{ "Printers" , printers },
	{ "Bindery" , bindery },
	{ "Whoami" , whoami },
	{ "Volumes" , volumes },
	{ "Ping" , ping },
};


int
walkinfo(char *name)
{
	int i;

	for (i = 0; i < nelem(Infdir); i++)
		if (strcmp(Infdir[i].name, name) == 0)
			return(i);
	return(-1);
}

int
numinfo(void)
{
	return nelem(Infdir);
}

int
dirgeninfo(int slot, Dir *d)
{
	if (slot >= nelem(Infdir))
		return -1;

	memset(d, 0, sizeof(Dir));
	d->type = 'N';
	d->dev = 99;
	d->name = estrdup9p(Infdir[slot].name);
	d->uid = estrdup9p("supervisor");
	d->muid = estrdup9p("supervisor");
	d->gid = estrdup9p("none");
	d->mode = 0666;
	d->qid.vers = Vinfo;
	d->qid.path = slot;
	d->qid.type = 0;

	return 0;
}

int
makeinfo(int path)
{
	Fmt f;

	if (Infdir[path].buf != nil)
		return 0;
	fmtstrinit(&f);
	if ((*Infdir[path].func)(&f) == -1l)
		return -1;
	Infdir[path].buf = fmtstrflush(&f);
	Infdir[path].len = strlen(Infdir[path].buf);
	return 0;
}

int
readinfo(int path, char *buf, int len, int off)
{
	if (off > Infdir[path].len)
		return 0;
	if (len + off > Infdir[path].len)
		len = Infdir[path].len - off;
	memmove(buf, Infdir[path].buf + off, len);
	return len;
}

void
freeinfo(int path)
{
	free(Infdir[path].buf);
	Infdir[path].buf = nil;
}