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Diffstat (limited to 'pki/base/osutil/src/com/netscape/osutil/UserID.c')
-rw-r--r--pki/base/osutil/src/com/netscape/osutil/UserID.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/pki/base/osutil/src/com/netscape/osutil/UserID.c b/pki/base/osutil/src/com/netscape/osutil/UserID.c
new file mode 100644
index 0000000..456fe10
--- /dev/null
+++ b/pki/base/osutil/src/com/netscape/osutil/UserID.c
@@ -0,0 +1,166 @@
+// --- BEGIN COPYRIGHT BLOCK ---
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; version 2 of the License.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2007 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+
+/*
+ * Native wrappers for setuid/getuid
+ */
+
+#include <jni.h>
+#include "com_netscape_osutil_UserID.h"
+#include "unixdefs.h"
+#include <unistd.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <errno.h>
+#include <stdlib.h>
+
+/*
+ * Throw an IllegalArgumentException
+ */
+void
+unix_throw_exception(JNIEnv *env, const char *exception, const char *reason)
+{
+ jclass exc;
+
+ exc = (*env)->FindClass(env, exception);
+ if (exc) /* If unable to find the new exception class, give up. */
+ (*env)->ThrowNew(env, exc, reason);
+}
+
+/*
+ * Convert a jstring name into a uid_t value
+ */
+static uid_t
+name_to_uid(JNIEnv *env, jstring name)
+{
+ const char *username = (*env)->GetStringUTFChars(env, name, 0);
+ struct passwd *pw;
+ int ret;
+
+ if (NULL == username) {
+ unix_throw_exception(env, ILLARG, "can't convert username");
+ return -1;
+ }
+
+ pw = getpwnam(username);
+
+ if (NULL == pw) {
+ /* XXX I suppose the failed user name would be useful here */
+ unix_throw_exception(env, ILLARG, "no such user");
+ return -1;
+ }
+
+ ret = pw->pw_uid;
+ free(pw);
+ return ret;
+}
+
+/*
+ * Class: com_netscape_osutil_UserID
+ * Method: get
+ * Signature: ()I
+ */
+JNIEXPORT jint JNICALL
+Java_com_netscape_osutil_UserID_get(JNIEnv *env, jclass cls)
+{
+ return getuid();
+}
+
+/*
+ * Class: com_netscape_certsrv_unix_UserID
+ * Method: getEffective
+ * Signature: ()I
+ */
+JNIEXPORT jint JNICALL
+Java_com_netscape_osutil_UserID_getEffective(JNIEnv *env, jclass cls)
+{
+ return geteuid();
+}
+
+/*
+ * Class: com_netscape_certsrv_unix_UserID
+ * Method: set
+ * Signature: (I)Z
+ */
+JNIEXPORT void JNICALL
+Java_com_netscape_osutil_UserID_set__I(JNIEnv *env, jclass cls, jint id)
+{
+ int status = setuid(id);
+
+ if (status != 0) {
+ switch (errno) {
+ case EINVAL:
+ unix_throw_exception(env, ILLARG, "bad uid value");
+ break;
+ case EPERM:
+ unix_throw_exception(env, SECURITY, "permission denied");
+ break;
+ }
+ }
+}
+
+/*
+ * Class: com_netscape_certsrv_unix_UserID
+ * Method: set
+ * Signature: (Ljava/lang/String;)Z
+ */
+JNIEXPORT void JNICALL
+Java_com_netscape_osutil_UserID_set__Ljava_lang_String_2(JNIEnv *env, jclass cls, jstring name)
+{
+ int id = name_to_uid(env, name);
+
+ if (id >= 0)
+ Java_com_netscape_osutil_UserID_set__I(env, cls, id);
+}
+
+/*
+ * Class: com_netscape_certsrv_unix_UserID
+ * Method: setEffective
+ * Signature: (I)Z
+ */
+JNIEXPORT void JNICALL
+Java_com_netscape_osutil_UserID_setEffective__I(JNIEnv *env, jclass cls, jint id)
+{
+ int status = seteuid(id);
+
+ if (status != 0) {
+ switch (errno) {
+ case EINVAL:
+ unix_throw_exception(env, ILLARG, "bad uid value");
+ break;
+ case EPERM:
+ unix_throw_exception(env, SECURITY, "permission denied");
+ break;
+ }
+ }
+}
+
+/*
+ * Class: com_netscape_certsrv_unix_UserID
+ * Method: setEffective
+ * Signature: (Ljava/lang/String;)Z
+ */
+JNIEXPORT void JNICALL
+Java_com_netscape_osutil_UserID_setEffective__Ljava_lang_String_2(JNIEnv *env, jclass cls, jstring name)
+{
+ int id = name_to_uid(env, name);
+
+ if (id >= 0)
+ Java_com_netscape_osutil_UserID_setEffective__I(env, cls, id);
+}
+