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#include <u.h>
#include <libc.h>
#include <bio.h>
#include <libsec.h>
#include <authsrv.h>
#include "authcmdlib.h"
static uchar zeros[16];
int
readfile(char *file, char *buf, int n)
{
int fd;
fd = open(file, OREAD);
if(fd < 0){
werrstr("%s: %r", file);
return -1;
}
n = read(fd, buf, n);
close(fd);
return n;
}
int
writefile(char *file, char *buf, int n)
{
int fd;
fd = open(file, OWRITE);
if(fd < 0)
return -1;
n = write(fd, buf, n);
close(fd);
return n;
}
char*
finddeskey(char *db, char *user, char *key)
{
char filename[Maxpath];
snprint(filename, sizeof filename, "%s/%s/key", db, user);
if(readfile(filename, key, DESKEYLEN) != DESKEYLEN)
return nil;
return key;
}
uchar*
findaeskey(char *db, char *user, uchar *key)
{
char filename[Maxpath];
snprint(filename, sizeof filename, "%s/%s/aeskey", db, user);
if(readfile(filename, (char*)key, AESKEYLEN) != AESKEYLEN)
return nil;
return key;
}
int
findkey(char *db, char *user, Authkey *key)
{
int ret;
memset(key, 0, sizeof(Authkey));
ret = findaeskey(db, user, key->aes) != nil;
if(ret && tsmemcmp(key->aes, zeros, AESKEYLEN) != 0){
char filename[Maxpath];
snprint(filename, sizeof filename, "%s/%s/pakhash", db, user);
if(readfile(filename, (char*)key->pakhash, PAKHASHLEN) != PAKHASHLEN)
authpak_hash(key, user);
}
ret |= finddeskey(db, user, key->des) != nil;
return ret;
}
char*
findsecret(char *db, char *user, char *secret)
{
int n;
char filename[Maxpath];
snprint(filename, sizeof filename, "%s/%s/secret", db, user);
if((n = readfile(filename, secret, SECRETLEN-1)) <= 0)
return nil;
secret[n]=0;
return secret;
}
char*
setdeskey(char *db, char *user, char *key)
{
char filename[Maxpath];
snprint(filename, sizeof filename, "%s/%s/key", db, user);
if(writefile(filename, key, DESKEYLEN) != DESKEYLEN)
return nil;
return key;
}
uchar*
setaeskey(char *db, char *user, uchar *key)
{
char filename[Maxpath];
snprint(filename, sizeof filename, "%s/%s/aeskey", db, user);
if(writefile(filename, (char*)key, AESKEYLEN) != AESKEYLEN)
return nil;
return key;
}
int
setkey(char *db, char *user, Authkey *key)
{
int ret;
ret = setdeskey(db, user, key->des) != nil;
if(tsmemcmp(key->aes, zeros, AESKEYLEN) != 0)
ret |= setaeskey(db, user, key->aes) != nil;
return ret;
}
char*
setsecret(char *db, char *user, char *secret)
{
char filename[Maxpath];
snprint(filename, sizeof filename, "%s/%s/secret", db, user);
if(writefile(filename, secret, strlen(secret)) != strlen(secret))
return nil;
return secret;
}
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