Flatten and clean up.

1 files changed, 110 insertions, 0 deletions

diff --git a/lib/openpam_dynamic.c b/lib/openpam_dynamic.c
new file mode 100644
index 0000000..084408e
--- /dev/null
+++ b/lib/openpam_dynamic.c
@@ -0,0 +1,110 @@
+/*-
+ * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
+ * Copyright (c) 2004-2007 Dag-Erling Smørgrav
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by ThinkSec AS and
+ * Network Associates Laboratories, the Security Research Division of
+ * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
+ * ("CBOSS"), as part of the DARPA CHATS research program.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: openpam_dynamic.c 408 2007-12-21 11:36:24Z des $
+ */
+
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <security/pam_appl.h>
+
+#include "openpam_impl.h"
+
+#ifndef RTLD_NOW
+#define RTLD_NOW RTLD_LAZY
+#endif
+
+/*
+ * OpenPAM internal
+ *
+ * Locate a dynamically linked module
+ */
+
+pam_module_t *
+openpam_dynamic(const char *path)
+{
+	pam_module_t *module;
+	const char *prefix;
+	char *vpath;
+	void *dlh;
+	int i;
+
+	dlh = NULL;
+	if ((module = calloc(1, sizeof *module)) == NULL)
+		goto buf_err;
+
+	/* Prepend the standard prefix if not an absolute pathname. */
+	if (path[0] != '/')
+		prefix = OPENPAM_MODULES_DIR;
+	else
+		prefix = "";
+
+	/* try versioned module first, then unversioned module */
+	if (asprintf(&vpath, "%s%s.%d", prefix, path, LIB_MAJ) < 0)
+		goto buf_err;
+	if ((dlh = dlopen(vpath, RTLD_NOW)) == NULL) {
+		openpam_log(PAM_LOG_DEBUG, "%s: %s", vpath, dlerror());
+		*strrchr(vpath, '.') = '\0';
+		if ((dlh = dlopen(vpath, RTLD_NOW)) == NULL) {
+			openpam_log(PAM_LOG_DEBUG, "%s: %s", vpath, dlerror());
+			FREE(vpath);
+			FREE(module);
+			return (NULL);
+		}
+	}
+	FREE(vpath);
+	if ((module->path = strdup(path)) == NULL)
+		goto buf_err;
+	module->dlh = dlh;
+	for (i = 0; i < PAM_NUM_PRIMITIVES; ++i) {
+		module->func[i] = (pam_func_t)dlsym(dlh, _pam_sm_func_name[i]);
+		if (module->func[i] == NULL)
+			openpam_log(PAM_LOG_DEBUG, "%s: %s(): %s",
+			    path, _pam_sm_func_name[i], dlerror());
+	}
+	return (module);
+ buf_err:
+	openpam_log(PAM_LOG_ERROR, "%m");
+	if (dlh != NULL)
+		dlclose(dlh);
+	FREE(module);
+	return (NULL);
+}
+
+/*
+ * NOPARSE
+ */