Adding upstream version 1.4.0.upstream/1.4.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 166 insertions, 0 deletions

diff --git a/libpam/pam_data.c b/libpam/pam_data.c
new file mode 100644
index 0000000..30570af
--- /dev/null
+++ b/libpam/pam_data.c
@@ -0,0 +1,166 @@
+/*
+ * 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.
+ */
+
+#include "config.h"
+
+#include "pam_private.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+static struct pam_data *_pam_locate_data(const pam_handle_t *pamh,
+					 const char *name)
+{
+    struct pam_data *data;
+
+    D(("called"));
+
+    IF_NO_PAMH("_pam_locate_data", pamh, NULL);
+
+    data = pamh->data;
+
+    while (data) {
+	if (!strcmp(data->name, name)) {
+	    return data;
+	}
+	data = data->next;
+    }
+
+    return NULL;
+}
+
+int pam_set_data(
+    pam_handle_t *pamh,
+    const char *module_data_name,
+    void *data,
+    void (*cleanup)(pam_handle_t *pamh, void *data, int error_status))
+{
+    struct pam_data *data_entry;
+
+    D(("called"));
+
+    IF_NO_PAMH("pam_set_data", pamh, PAM_SYSTEM_ERR);
+
+    if (__PAM_FROM_APP(pamh)) {
+	D(("called from application!?"));
+	return PAM_SYSTEM_ERR;
+    }
+
+    /* module_data_name should not be NULL */
+    if (module_data_name == NULL) {
+	D(("called with NULL as module_data_name"));
+	return PAM_SYSTEM_ERR;
+    }
+
+    /* first check if there is some data already. If so clean it up */
+
+    if ((data_entry = _pam_locate_data(pamh, module_data_name))) {
+	if (data_entry->cleanup) {
+	    data_entry->cleanup(pamh, data_entry->data,
+				PAM_DATA_REPLACE | PAM_SUCCESS );
+	}
+    } else if ((data_entry = malloc(sizeof(*data_entry)))) {
+	char *tname;
+
+	if ((tname = _pam_strdup(module_data_name)) == NULL) {
+	    pam_syslog(pamh, LOG_CRIT,
+		       "pam_set_data: no memory for data name");
+	    _pam_drop(data_entry);
+	    return PAM_BUF_ERR;
+	}
+	data_entry->next = pamh->data;
+	pamh->data = data_entry;
+	data_entry->name = tname;
+    } else {
+	pam_syslog(pamh, LOG_CRIT,
+		   "pam_set_data: cannot allocate data entry");
+	return PAM_BUF_ERR;
+    }
+
+    data_entry->data = data;           /* note this could be NULL */
+    data_entry->cleanup = cleanup;
+
+    return PAM_SUCCESS;
+}
+
+int pam_get_data(
+    const pam_handle_t *pamh,
+    const char *module_data_name,
+    const void **datap)
+{
+    struct pam_data *data;
+
+    D(("called"));
+
+    IF_NO_PAMH("pam_get_data", pamh, PAM_SYSTEM_ERR);
+
+    if (__PAM_FROM_APP(pamh)) {
+	D(("called from application!?"));
+	return PAM_SYSTEM_ERR;
+    }
+
+    /* module_data_name should not be NULL */
+    if (module_data_name == NULL) {
+	D(("called with NULL as module_data_name"));
+	return PAM_SYSTEM_ERR;
+    }
+
+    data = _pam_locate_data(pamh, module_data_name);
+    if (data) {
+	*datap = data->data;
+	return PAM_SUCCESS;
+    }
+
+    return PAM_NO_MODULE_DATA;
+}
+
+void _pam_free_data(pam_handle_t *pamh, int status)
+{
+    struct pam_data *last;
+    struct pam_data *data;
+
+    D(("called"));
+
+    IF_NO_PAMH("_pam_free_data", pamh, /* no return value for void fn */);
+    data = pamh->data;
+
+    while (data) {
+	last = data;
+	data = data->next;
+	if (last->cleanup) {
+	    last->cleanup(pamh, last->data, status);
+	}
+	_pam_drop(last->name);
+	_pam_drop(last);
+    }
+}