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WebSVN – planix.SVN – Blame – /os/branches/feature_unix/sys/src/cmd/auth/lib/readwrite.c – Rev 2

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#include <u.h>
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#include <libc.h>
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#include <authsrv.h>
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#include <bio.h>
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#include "authcmdlib.h"
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int
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readfile(char *file, char *buf, int n)
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{
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	int fd;
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	fd = open(file, OREAD);
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	if(fd < 0){
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		werrstr("%s: %r", file);
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		return -1;
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	}
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	n = read(fd, buf, n);
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	close(fd);
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	return n;
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}
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int
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writefile(char *file, char *buf, int n)
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{
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	int fd;
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	fd = open(file, OWRITE);
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	if(fd < 0)
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		return -1;
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	n = write(fd, buf, n);
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	close(fd);
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	return n;
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}
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char*
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findkey(char *db, char *user, char *key)
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{
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	int n;
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	char filename[Maxpath];
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	snprint(filename, sizeof filename, "%s/%s/key", db, user);
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	n = readfile(filename, key, DESKEYLEN);
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	if(n != DESKEYLEN)
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		return 0;
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	else
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		return key;
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}
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char*
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findsecret(char *db, char *user, char *secret)
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{
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	int n;
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	char filename[Maxpath];
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	snprint(filename, sizeof filename, "%s/%s/secret", db, user);
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	n = readfile(filename, secret, SECRETLEN-1);
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	secret[n]=0;
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	if(n <= 0)
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		return 0;
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	else
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		return secret;
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}
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char*
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setkey(char *db, char *user, char *key)
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{
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	int n;
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	char filename[Maxpath];
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	snprint(filename, sizeof filename, "%s/%s/key", db, user);
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	n = writefile(filename, key, DESKEYLEN);
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	if(n != DESKEYLEN)
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		return 0;
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	else
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		return key;
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}
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char*
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setsecret(char *db, char *user, char *secret)
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{
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	int n;
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	char filename[Maxpath];
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	snprint(filename, sizeof filename, "%s/%s/secret", db, user);
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	n = writefile(filename, secret, strlen(secret));
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	if(n != strlen(secret))
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		return 0;
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	else
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		return secret;
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}