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Diffstat (limited to 'src/sss_client/autofs/sss_autofs.c')
-rw-r--r--src/sss_client/autofs/sss_autofs.c360
1 files changed, 360 insertions, 0 deletions
diff --git a/src/sss_client/autofs/sss_autofs.c b/src/sss_client/autofs/sss_autofs.c
new file mode 100644
index 000000000..6195c0fc4
--- /dev/null
+++ b/src/sss_client/autofs/sss_autofs.c
@@ -0,0 +1,360 @@
+/*
+ Authors:
+ Jakub Hrozek <jhrozek@redhat.com>
+
+ Copyright (C) 2012 Red Hat
+
+ 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/>.
+*/
+
+#include <errno.h>
+#include <stdlib.h>
+
+#include "sss_client/autofs/sss_autofs_private.h"
+#include "sss_client/sss_cli.h"
+
+/* Historically, autofs map and key names were just file names */
+#define MAX_AUTOMNTMAPNAME_LEN NAME_MAX
+#define MAX_AUTOMNTKEYNAME_LEN NAME_MAX
+
+struct automtent {
+ char *mapname;
+ size_t cursor;
+};
+
+errno_t
+_sss_setautomntent(const char *mapname, void **context)
+{
+ errno_t ret;
+ int errnop;
+ struct automtent *ctx;
+ char *name;
+ size_t name_len;
+ struct sss_cli_req_data rd;
+ uint8_t *repbuf = NULL;
+ size_t replen;
+
+ if (!mapname) return EINVAL;
+
+ sss_nss_lock();
+
+ ret = sss_strnlen(mapname, MAX_AUTOMNTMAPNAME_LEN, &name_len);
+ if (ret != 0) {
+ ret = EINVAL;
+ goto out;
+ }
+
+ name = malloc(sizeof(char)*name_len + 1);
+ if (name == NULL) {
+ ret = ENOMEM;
+ goto out;
+ }
+ strncpy(name, mapname, name_len + 1);
+
+ rd.data = name;
+ rd.len = name_len + 1;
+
+ sss_autofs_make_request(SSS_AUTOFS_SETAUTOMNTENT, &rd,
+ &repbuf, &replen, &errnop);
+ if (errnop != 0) {
+ free(name);
+ ret = errnop;
+ goto out;
+ }
+
+ /* no results if not found */
+ if (((uint32_t *)repbuf)[0] == 0) {
+ free(name);
+ free(repbuf);
+ ret = ENOENT;
+ goto out;
+ }
+ free(repbuf);
+
+ ctx = malloc(sizeof(struct automtent));
+ if (!ctx) {
+ free(name);
+ ret = ENOMEM;
+ goto out;
+ }
+
+ ctx->mapname = strdup(name);
+ if (!ctx->mapname) {
+ free(name);
+ free(ctx);
+ ret = ENOMEM;
+ goto out;
+ }
+ ctx->cursor = 0;
+ free(name);
+
+ *context = ctx;
+ ret = 0;
+out:
+ sss_nss_unlock();
+ return ret;
+}
+
+errno_t
+_sss_getautomntent_r(char **key, char **value, void *context)
+{
+ int errnop;
+ errno_t ret;
+ size_t name_len;
+ struct sss_cli_req_data rd;
+ uint8_t *repbuf = NULL;
+ size_t replen;
+ struct automtent *ctx;
+ size_t ctr = 0;
+ size_t data_len = 0;
+ uint8_t *data;
+ uint32_t v;
+
+ char *buf;
+ uint32_t len;
+ uint32_t keylen;
+ uint32_t vallen;
+ size_t rp;
+
+ sss_nss_lock();
+
+ ctx = (struct automtent *) context;
+ if (!ctx) {
+ ret = EINVAL;
+ goto out;
+ }
+
+ /* Be paranoid in case someone tries to smuggle in a huge map name */
+ ret = sss_strnlen(ctx->mapname, MAX_AUTOMNTMAPNAME_LEN, &name_len);
+ if (ret != 0) {
+ ret = EINVAL;
+ goto out;
+ }
+
+ data_len = sizeof(uint32_t) + /* mapname len */
+ name_len + 1 + /* mapname\0 */
+ sizeof(uint32_t); /* index into the map */
+
+ data = malloc(data_len);
+ if (!data) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ v = name_len;
+ SAFEALIGN_COPY_UINT32(data, &v, &ctr);
+
+ safealign_memcpy(data+ctr, ctx->mapname, name_len + 1, &ctr);
+
+ v = ctx->cursor;
+ SAFEALIGN_COPY_UINT32(data+ctr, &v, &ctr);
+
+ rd.data = data;
+ rd.len = data_len;
+
+ sss_autofs_make_request(SSS_AUTOFS_GETAUTOMNTENT, &rd,
+ &repbuf, &replen, &errnop);
+ free(data);
+ if (errnop != 0) {
+ ret = errnop;
+ goto out;
+ }
+
+ /* Got reply, let's parse it */
+ rp = 0;
+ SAFEALIGN_COPY_UINT32(&len, repbuf+rp, &rp);
+ if (len == 0) {
+ /* End of iteration */
+ *key = NULL;
+ *value = NULL;
+ ret = ENOENT;
+ goto out;
+ }
+
+ SAFEALIGN_COPY_UINT32(&keylen, repbuf+rp, &rp);
+ if (keylen > len-rp) {
+ ret = EIO;
+ goto out;
+ }
+
+ buf = malloc(keylen);
+ if (!buf) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ safealign_memcpy(buf, repbuf+rp, keylen, &rp);
+ *key = buf;
+
+ SAFEALIGN_COPY_UINT32(&vallen, repbuf+rp, &rp);
+ if (vallen > len-rp) {
+ ret = EIO;
+ goto out;
+ }
+
+ buf = malloc(vallen);
+ if (!buf) {
+ free(*key);
+ ret = ENOMEM;
+ goto out;
+ }
+
+ safealign_memcpy(buf, repbuf+rp, vallen, &rp);
+ *value = buf;
+
+ /* Advance the cursor so that we'll fetch the next map
+ * next time getautomntent is called */
+ ctx->cursor++;
+ ret = 0;
+out:
+ free(repbuf);
+ sss_nss_unlock();
+ return ret;
+}
+
+errno_t
+_sss_getautomntbyname_r(const char *key, char **value, void *context)
+{
+ int errnop;
+ errno_t ret;
+ struct automtent *ctx;
+ size_t key_len;
+ size_t name_len;
+ size_t data_len = 0;
+ uint8_t *data;
+ uint32_t v;
+ size_t ctr = 0;
+ struct sss_cli_req_data rd;
+ uint8_t *repbuf = NULL;
+ size_t replen;
+
+ char *buf;
+ uint32_t len;
+ uint32_t vallen;
+ size_t rp;
+
+ sss_nss_lock();
+
+ ctx = (struct automtent *) context;
+ if (!ctx || !key) {
+ ret = EINVAL;
+ goto out;
+ }
+
+ /* Be paranoid in case someone tries to smuggle in a huge map name */
+ ret = sss_strnlen(ctx->mapname, MAX_AUTOMNTMAPNAME_LEN, &name_len);
+ if (ret != 0) {
+ ret = EINVAL;
+ goto out;
+ }
+
+ ret = sss_strnlen(ctx->mapname, MAX_AUTOMNTKEYNAME_LEN, &key_len);
+ if (ret != 0) {
+ ret = EINVAL;
+ goto out;
+ }
+
+
+ data_len = sizeof(uint32_t) + /* mapname len */
+ name_len + 1 + /* mapname\0 */
+ sizeof(uint32_t) + /* keyname len */
+ key_len + 1; /* keyname\0 */
+
+ data = malloc(data_len);
+ if (!data) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ v = name_len;
+ SAFEALIGN_COPY_UINT32(data, &v, &ctr);
+
+ safealign_memcpy(data+ctr, ctx->mapname, name_len + 1, &ctr);
+
+ v = key_len;
+ SAFEALIGN_COPY_UINT32(data+ctr, &v, &ctr);
+
+ safealign_memcpy(data+ctr, key, key_len + 1, &ctr);
+
+ rd.data = data;
+ rd.len = data_len;
+
+ sss_autofs_make_request(SSS_AUTOFS_GETAUTOMNTBYNAME, &rd,
+ &repbuf, &replen, &errnop);
+ free(data);
+ if (errnop != 0) {
+ ret = errnop;
+ goto out;
+ }
+
+ /* Got reply, let's parse it */
+ rp = 0;
+ SAFEALIGN_COPY_UINT32(&len, repbuf+rp, &rp);
+ if (len == 0) {
+ /* No data */
+ *value = NULL;
+ ret = ENOENT;
+ goto out;
+ }
+
+ SAFEALIGN_COPY_UINT32(&vallen, repbuf+rp, &rp);
+ if (vallen > len-rp) {
+ ret = EIO;
+ goto out;
+ }
+
+ buf = malloc(vallen);
+ if (!buf) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ safealign_memcpy(buf, repbuf+rp, vallen, &rp);
+ *value = buf;
+
+ ret = 0;
+out:
+ free(repbuf);
+ sss_nss_unlock();
+ return ret;
+}
+
+errno_t
+_sss_endautomntent(void **context)
+{
+ struct automtent *fctx;
+ errno_t ret;
+ int errnop;
+
+ if (!context) return 0;
+
+ sss_nss_lock();
+
+ fctx = (struct automtent *) *context;
+
+ free(fctx->mapname);
+ free(fctx);
+
+ sss_autofs_make_request(SSS_AUTOFS_ENDAUTOMNTENT,
+ NULL, NULL, NULL, &errnop);
+ if (errnop != 0) {
+ ret = errnop;
+ goto out;
+ }
+
+ ret = 0;
+out:
+ sss_nss_unlock();
+ return ret;
+}
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