Initial revision

1 files changed, 141 insertions, 0 deletions

diff --git a/libpam/pam_static.c b/libpam/pam_static.c
new file mode 100644
index 00000000..64a3dd31
--- /dev/null
+++ b/libpam/pam_static.c
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+/* pam_static.c -- static module loading helper functions */
+
+/* created by Michael K. Johnson, johnsonm@redhat.com
+ *
+ * $Id$
+ */
+
+/* This whole file is only used for PAM_STATIC */
+
+#ifdef PAM_STATIC
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "pam_private.h"
+
+/*
+ * Need to include pointers to static modules; this was built by each
+ * of the modules that register...
+ */
+
+#include "../modules/_static_module_list"
+
+/*
+ * and here is a structure that connects libpam to the above static
+ * modules
+ */
+
+static struct pam_module *static_modules[] = {
+
+#include "../modules/_static_module_entry"
+
+    NULL
+};
+
+/*
+ * and now for the functions
+ */
+
+/* Return pointer to data structure used to define a static module */
+struct pam_module * _pam_open_static_handler(const char *path)
+{
+    int i;
+    const char *clpath = path;
+    char *lpath, *end;
+
+    if (strchr(clpath, '/')) {
+        /* ignore path and leading "/" */
+	clpath = strrchr(lpath, '/') + 1;
+    }
+    /* create copy to muck with (must free before return) */
+    lpath = _pam_strdup(clpath);
+    /* chop .so off copy if it exists (or other extension on other
+       platform...) */
+    end = strstr(lpath, ".so");
+    if (end) {
+        *end = '\0';
+    }
+
+    /* now go find the module */
+    for (i = 0; static_modules[i] != NULL; i++) {
+	D(("%s=?%s\n", lpath, static_modules[i]->name));
+        if (static_modules[i]->name &&
+	    ! strcmp(static_modules[i]->name, lpath)) {
+	    break;
+	}
+    }
+
+    if (static_modules[i] == NULL) {
+	_pam_system_log(NULL, NULL, LOG_ERR, "no static module named %s",
+			lpath);
+    }
+
+    free(lpath);
+    return (static_modules[i]);
+}
+
+/* Return pointer to function requested from static module
+ * Can't just return void *, because ANSI C disallows casting a
+ * pointer to a function to a void *...
+ * This definition means:
+ * _pam_get_static_sym is a function taking two arguments and
+ * returning a pointer to a function which takes no arguments
+ * and returns void... */
+voidfunc *_pam_get_static_sym(struct pam_module *mod, const char *symname) {
+
+    if (! strcmp(symname, "pam_sm_authenticate")) {
+        return ((voidfunc *)mod->pam_sm_authenticate);
+    } else if (! strcmp(symname, "pam_sm_setcred")) {
+        return ((voidfunc *)mod->pam_sm_setcred);
+    } else if (! strcmp(symname, "pam_sm_acct_mgmt")) {
+        return ((voidfunc *)mod->pam_sm_acct_mgmt);
+    } else if (! strcmp(symname, "pam_sm_open_session")) {
+        return ((voidfunc *)mod->pam_sm_open_session);
+    } else if (! strcmp(symname, "pam_sm_close_session")) {
+        return ((voidfunc *)mod->pam_sm_close_session);
+    } else if (! strcmp(symname, "pam_sm_chauthtok")) {
+        return ((voidfunc *)mod->pam_sm_chauthtok);
+    }
+    /* getting to this point is an error */
+    return ((voidfunc *)NULL);
+}
+
+#endif /* PAM_STATIC */
+
+/*
+ * Copyright (C) 1995 by Red Hat Software, Michael K. Johnson
+ * All rights reserved
+ *
+ * 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, and the entire permission notice in its entirety,
+ *    including the disclaimer of warranties.
+ * 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.
+ * 
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions.  (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ * 
+ * THIS SOFTWARE IS PROVIDED ``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 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.
+ */