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Diffstat (limited to 'modules/pammodutil/modutil_getpwnam.c')
-rw-r--r--modules/pammodutil/modutil_getpwnam.c139
1 files changed, 0 insertions, 139 deletions
diff --git a/modules/pammodutil/modutil_getpwnam.c b/modules/pammodutil/modutil_getpwnam.c
deleted file mode 100644
index e0dfdca3..00000000
--- a/modules/pammodutil/modutil_getpwnam.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * $Id$
- *
- * This function provides a thread safer version of getpwnam() for use
- * with PAM modules that care about this sort of thing.
- *
- * XXX - or at least it should provide a thread-safe alternative.
- */
-
-#include "pammodutil.h"
-
-#include <errno.h>
-#include <limits.h>
-#include <pthread.h>
-#include <pwd.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-static pthread_mutex_t _pammodutil_mutex = PTHREAD_MUTEX_INITIALIZER;
-static void _pammodutil_lock(void)
-{
- pthread_mutex_lock(&_pammodutil_mutex);
-}
-static void _pammodutil_unlock(void)
-{
- pthread_mutex_unlock(&_pammodutil_mutex);
-}
-
-static int intlen(int number)
-{
- int len = 2;
- while (number != 0) {
- number /= 10;
- len++;
- }
- return len;
-}
-
-struct passwd *_pammodutil_getpwnam(pam_handle_t *pamh, const char *user)
-{
-#ifdef HAVE_GETPWNAM_R
-
- void *buffer=NULL;
- size_t length = PWD_INITIAL_LENGTH;
-
- do {
- int status;
- void *new_buffer;
- struct passwd *result = NULL;
-
- new_buffer = realloc(buffer, sizeof(struct passwd) + length);
- if (new_buffer == NULL) {
-
- D(("out of memory"));
-
- /* no memory for the user - so delete the memory */
- if (buffer) {
- free(buffer);
- }
- return NULL;
- }
- buffer = new_buffer;
-
- /* make the re-entrant call to get the pwd structure */
- errno = 0;
- status = getpwnam_r(user, buffer,
- sizeof(struct passwd) + (char *) buffer,
- length, &result);
- if (!status && (result == buffer)) {
- char *data_name;
- const void *ignore;
- int i;
-
- data_name = malloc(strlen("_pammodutil_getpwnam") + 1 +
- strlen(user) + 1 + intlen(INT_MAX) + 1);
- if ((pamh != NULL) && (data_name == NULL)) {
- D(("was unable to register the data item [%s]",
- pam_strerror(pamh, status)));
- free(buffer);
- return NULL;
- }
-
- if (pamh != NULL) {
- for (i = 0; i < INT_MAX; i++) {
- sprintf(data_name, "_pammodutil_getpwnam_%s_%d", user, i);
- _pammodutil_lock();
- status = PAM_NO_MODULE_DATA;
- if (pam_get_data(pamh, data_name, &ignore) != PAM_SUCCESS) {
- status = pam_set_data(pamh, data_name,
- result, _pammodutil_cleanup);
- }
- _pammodutil_unlock();
- if (status == PAM_SUCCESS) {
- break;
- }
- }
- } else {
- status = PAM_SUCCESS;
- }
-
- free(data_name);
-
- if (status == PAM_SUCCESS) {
- D(("success"));
- return result;
- }
-
- D(("was unable to register the data item [%s]",
- pam_strerror(pamh, status)));
-
- free(buffer);
- return NULL;
-
- } else if (errno != ERANGE && errno != EINTR) {
- /* no sense in repeating the call */
- break;
- }
-
- length <<= 2;
-
- } while (length < PWD_ABSURD_PWD_LENGTH);
-
- D(("pwd structure took %u bytes or so of memory",
- length+sizeof(struct passwd)));
-
- free(buffer);
- return NULL;
-
-#else /* ie. ifndef HAVE_GETPWNAM_R */
-
- /*
- * Sorry, there does not appear to be a reentrant version of
- * getpwnam(). So, we use the standard libc function.
- */
-
- return getpwnam(user);
-
-#endif /* def HAVE_GETPWNAM_R */
-}