Adding upstream version 2.9.4.upstream/2.9.4

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

1 files changed, 166 insertions, 0 deletions

diff --git a/src/tests/intg/nss_call.c b/src/tests/intg/nss_call.c
new file mode 100644
index 0000000..a8c7d30
--- /dev/null
+++ b/src/tests/intg/nss_call.c
@@ -0,0 +1,166 @@
+/*
+    NSS module which calls glibc's user and group lookup functions again
+
+    DO NOT USE THIS IN /etc/nsswitch.conf, it will cause an infinite loop.
+
+    The main use case is to run proxy provider tests with cwrap's nss-wrapper.
+    The proxy provider loads the NSS modules directly with dlopen() and is not
+    using glibc's NSS mechanism. Since nss-wrapper just wraps the standard
+    glibc calls and does not provide an NSS module on its own we have to use
+    this workaround to make proxy provider work with nss-wrapper.
+
+    Authors:
+        Sumit Bose <sbose@redhat.com>
+
+    Copyright (c) 2023 Red Hat, Inc.
+
+    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; either version 3 of the License, or
+    (at your option) any later version.
+
+    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, see <http://www.gnu.org/licenses/>.
+*/
+
+#define _DEFAULT_SOURCE
+#define _GNU_SOURCE
+
+#include <stdlib.h>
+#include <nss.h>
+#include <sys/types.h>
+#include <pwd.h>
+#include <grp.h>
+
+
+
+#define NSSRET(r) return (((r) == 0) ? NSS_STATUS_SUCCESS : NSS_STATUS_NOTFOUND )
+
+enum nss_status _nss_call_getpwnam_r(const char *name, struct passwd *result,
+                                     char *buffer, size_t buflen, int *errnop)
+{
+    struct passwd *res;
+    int ret = getpwnam_r(name, result, buffer, buflen, &res);
+    NSSRET(ret);
+}
+
+enum nss_status _nss_call_getpwuid_r(uid_t uid, struct passwd *result,
+                                     char *buffer, size_t buflen, int *errnop)
+{
+    struct passwd *res;
+    int ret = getpwuid_r(uid, result, buffer, buflen, &res);
+    NSSRET(ret);
+}
+
+enum nss_status _nss_call_setpwent(void)
+{
+    setpwent();
+    return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status _nss_call_getpwent_r(struct passwd *result,
+                                    char *buffer, size_t buflen,
+                                    int *errnop)
+{
+    struct passwd *res;
+    int ret = getpwent_r(result, buffer, buflen, &res);
+    NSSRET(ret);
+}
+
+enum nss_status _nss_call_endpwent(void)
+{
+    endpwent();
+    return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status _nss_call_getgrnam_r(const char *name, struct group *result,
+                                     char *buffer, size_t buflen, int *errnop)
+{
+    struct group *res;
+    int ret = getgrnam_r(name, result, buffer, buflen, &res);
+    NSSRET(ret);
+}
+
+enum nss_status _nss_call_getgrgid_r(gid_t gid, struct group *result,
+                                     char *buffer, size_t buflen, int *errnop)
+{
+    struct group *res;
+    int ret = getgrgid_r(gid, result, buffer, buflen, &res);
+    NSSRET(ret);
+}
+
+enum nss_status _nss_call_setgrent(void)
+{
+    setgrent();
+    return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status _nss_call_getgrent_r(struct group *result,
+                                    char *buffer, size_t buflen, int *errnop)
+{
+    struct group *res;
+    int ret = getgrent_r(result, buffer, buflen, &res);
+    NSSRET(ret);
+}
+
+enum nss_status _nss_call_endgrent(void)
+{
+    endgrent();
+    return NSS_STATUS_SUCCESS;
+}
+
+enum nss_status _nss_call_initgroups_dyn(const char *user, gid_t group,
+                                         long int *start, long int *size,
+                                         gid_t **groups, long int limit,
+                                         int *errnop)
+{
+    int ngroups = 0;
+    gid_t *grps = NULL;
+    long int max_ret;
+    long int i;
+    int ret;
+
+    ret = getgrouplist(user, group, grps, &ngroups);
+    if (ret != -1) {
+        return NSS_STATUS_UNAVAIL;
+     }
+
+    grps = malloc(ngroups * sizeof(gid_t));
+    if (grps == NULL) {
+        return NSS_STATUS_UNAVAIL;
+    }
+
+    max_ret = ngroups;
+    /* check we have enough space in the buffer */
+    if ((*size - *start) < ngroups) {
+        long int newsize;
+        gid_t *newgroups;
+
+        newsize = *size + ngroups;
+        if ((limit > 0) && (newsize > limit)) {
+            newsize = limit;
+            max_ret = newsize - *start;
+        }
+
+        newgroups = (gid_t *)realloc((*groups), newsize * sizeof(**groups));
+        if (!newgroups) {
+            free(grps);
+            return NSS_STATUS_UNAVAIL;
+        }
+        *groups = newgroups;
+        *size = newsize;
+    }
+
+    for (i = 0; i < max_ret; i++) {
+        (*groups)[*start] = grps[i];
+        *start += 1;
+    }
+    free(grps);
+
+    return NSS_STATUS_SUCCESS;
+}