Import sources from 2011-03-30 iso image

1 files changed, 157 insertions, 0 deletions

diff --git a/sys/src/9/port/auth.c b/sys/src/9/port/auth.c
new file mode 100755
index 000000000..9565acd4e
--- /dev/null
+++ b/sys/src/9/port/auth.c
@@ -0,0 +1,157 @@
+#include	"u.h"
+#include	"../port/lib.h"
+#include	"mem.h"
+#include	"dat.h"
+#include	"fns.h"
+#include	"../port/error.h"
+
+#include	<authsrv.h>
+
+char	*eve;
+char	hostdomain[DOMLEN];
+
+/*
+ *  return true if current user is eve
+ */
+int
+iseve(void)
+{
+	return strcmp(eve, up->user) == 0;
+}
+
+long
+sysfversion(ulong *arg)
+{
+	char *vers;
+	uint arglen, m, msize;
+	Chan *c;
+
+	msize = arg[1];
+	vers = (char*)arg[2];
+	arglen = arg[3];
+	validaddr(arg[2], arglen, 1);
+	/* check there's a NUL in the version string */
+	if(arglen==0 || memchr(vers, 0, arglen)==0)
+		error(Ebadarg);
+	c = fdtochan(arg[0], ORDWR, 0, 1);
+	if(waserror()){
+		cclose(c);
+		nexterror();
+	}
+
+	m = mntversion(c, vers, msize, arglen);
+
+	cclose(c);
+	poperror();
+	return m;
+}
+
+long
+sys_fsession(ulong *arg)
+{
+	/* deprecated; backwards compatibility only */
+
+	if(arg[2] == 0)
+		error(Ebadarg);
+	validaddr(arg[1], arg[2], 1);
+	((uchar*)arg[1])[0] = '\0';
+	return 0;
+}
+
+long
+sysfauth(ulong *arg)
+{
+	Chan *c, *ac;
+	char *aname;
+	int fd;
+
+	validaddr(arg[1], 1, 0);
+	aname = validnamedup((char*)arg[1], 1);
+	if(waserror()){
+		free(aname);
+		nexterror();
+	}
+	c = fdtochan(arg[0], ORDWR, 0, 1);
+	if(waserror()){
+		cclose(c);
+		nexterror();
+	}
+
+	ac = mntauth(c, aname);
+	/* at this point ac is responsible for keeping c alive */
+	poperror();	/* c */
+	cclose(c);
+	poperror();	/* aname */
+	free(aname);
+
+	if(waserror()){
+		cclose(ac);
+		nexterror();
+	}
+
+	fd = newfd(ac);
+	if(fd < 0)
+		error(Enofd);
+	poperror();	/* ac */
+
+	/* always mark it close on exec */
+	ac->flag |= CCEXEC;
+
+	return fd;
+}
+
+/*
+ *  called by devcons() for user device
+ *
+ *  anyone can become none
+ */
+long
+userwrite(char *a, int n)
+{
+	if(n!=4 || strncmp(a, "none", 4)!=0)
+		error(Eperm);
+	kstrdup(&up->user, "none");
+	up->basepri = PriNormal;
+	return n;
+}
+
+/*
+ *  called by devcons() for host owner/domain
+ *
+ *  writing hostowner also sets user
+ */
+long
+hostownerwrite(char *a, int n)
+{
+	char buf[128];
+
+	if(!iseve())
+		error(Eperm);
+	if(n <= 0 || n >= sizeof buf)
+		error(Ebadarg);
+	memmove(buf, a, n);
+	buf[n] = 0;
+
+	renameuser(eve, buf);
+	kstrdup(&eve, buf);
+	kstrdup(&up->user, buf);
+	up->basepri = PriNormal;
+	return n;
+}
+
+long
+hostdomainwrite(char *a, int n)
+{
+	char buf[DOMLEN];
+
+	if(!iseve())
+		error(Eperm);
+	if(n >= DOMLEN)
+		error(Ebadarg);
+	memset(buf, 0, DOMLEN);
+	strncpy(buf, a, n);
+	if(buf[0] == 0)
+		error(Ebadarg);
+	memmove(hostdomain, buf, DOMLEN);
+	return n;
+}