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-rw-r--r--source3/Makefile.in1
-rw-r--r--source3/smbwrapper/smbw_cache.c208
-rw-r--r--source3/smbwrapper/smbw_dir.c13
3 files changed, 215 insertions, 7 deletions
diff --git a/source3/Makefile.in b/source3/Makefile.in
index b3723223ee..d6a2cfed1f 100644
--- a/source3/Makefile.in
+++ b/source3/Makefile.in
@@ -275,6 +275,7 @@ PAM_WINBIND_OBJ = nsswitch/pam_winbind.po nsswitch/wb_common.po
SMBW_OBJ = smbwrapper/smbw.o \
smbwrapper/smbw_dir.o smbwrapper/smbw_stat.o \
smbwrapper/realcalls.o smbwrapper/shared.o \
+ smbwrapper/smbw_cache.o \
$(LIBSMB_OBJ) $(PARAM_OBJ) \
$(UBIQX_OBJ) $(LIB_OBJ)
diff --git a/source3/smbwrapper/smbw_cache.c b/source3/smbwrapper/smbw_cache.c
new file mode 100644
index 0000000000..3213d99941
--- /dev/null
+++ b/source3/smbwrapper/smbw_cache.c
@@ -0,0 +1,208 @@
+/*
+ Unix SMB/Netbios implementation.
+ Version 2.0
+ SMB wrapper directory functions
+ Copyright (C) Tim Potter 2000
+
+ 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 2 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, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+/* We cache lists of workgroups, lists of servers in workgroups, and lists
+ of shares exported by servers. */
+
+#define CACHE_TIMEOUT 30
+
+struct name_list {
+ struct name_list *prev, *next;
+ char *name;
+ uint32 stype;
+ char *comment;
+};
+
+struct cached_names {
+ struct cached_names *prev, *next;
+ char *key;
+ struct name_list *name_list;
+ time_t cache_timeout;
+ int result;
+};
+
+static struct cached_names *cached_names = NULL;
+
+/* Find a list of cached name for a workgroup, server or share list */
+
+static struct cached_names *find_cached_names(char *key)
+{
+ struct cached_names *tmp;
+
+ for (tmp = cached_names; tmp; tmp = tmp->next) {
+ if (strequal(tmp->key, key)) {
+ return tmp;
+ }
+ }
+
+ return NULL;
+}
+
+/* Add a name to a list stored in the state variable */
+
+static void add_cached_names(const char *name, uint32 stype,
+ const char *comment, void *state)
+{
+ struct name_list **name_list = (struct name_list **)state;
+ struct name_list *new_name;
+
+ new_name = (struct name_list *)malloc(sizeof(struct name_list));
+ if (!new_name) return;
+
+ ZERO_STRUCTP(new_name);
+
+ new_name->name = strdup(name);
+ new_name->stype = stype;
+ new_name->comment = strdup(comment);
+
+ DLIST_ADD(*name_list, new_name);
+}
+
+static void free_name_list(struct name_list *name_list)
+{
+ struct name_list *tmp = name_list;
+
+ while(tmp) {
+ struct name_list *next;
+
+ next = tmp->next;
+
+ free(tmp->name);
+ free(tmp->comment);
+ free(tmp);
+
+ tmp = next;
+ }
+}
+
+/* Wrapper for NetServerEnum function */
+
+BOOL smbw_NetServerEnum(struct cli_state *cli, char *workgroup, uint32 stype,
+ void (*fn)(const char *, uint32, const char *, void *),
+ void *state)
+{
+ struct cached_names *names;
+ struct name_list *tmp;
+ time_t now = time(NULL);
+ char key[PATH_MAX];
+ BOOL result = True;
+
+ slprintf(key, PATH_MAX - 1, "%s/%s#%s", cli->desthost,
+ workgroup, (stype == SV_TYPE_DOMAIN_ENUM ? "DOM" : "SRV"));
+
+ names = find_cached_names(key);
+
+ if (names == NULL || (now - names->cache_timeout) > CACHE_TIMEOUT) {
+ struct cached_names *new_names = NULL;
+
+ /* No names cached for this workgroup */
+
+ if (names == NULL) {
+ new_names = (struct cached_names *)
+ malloc(sizeof(struct cached_names));
+
+ ZERO_STRUCTP(new_names);
+ DLIST_ADD(cached_names, new_names);
+
+ } else {
+
+ /* Dispose of out of date name list */
+
+ free_name_list(names->name_list);
+ names->name_list = NULL;
+
+ new_names = names;
+ }
+
+ result = cli_NetServerEnum(cli, workgroup, stype,
+ add_cached_names,
+ &new_names->name_list);
+
+ new_names->cache_timeout = now;
+ new_names->result = result;
+ new_names->key = strdup(key);
+
+ names = new_names;
+ }
+
+ /* Return names by running callback function. */
+
+ for (tmp = names->name_list; tmp; tmp = tmp->next)
+ fn(tmp->name, stype, tmp->comment, state);
+
+ return names->result;
+}
+
+/* Wrapper for RNetShareEnum function */
+
+int smbw_RNetShareEnum(struct cli_state *cli,
+ void (*fn)(const char *, uint32, const char *, void *),
+ void *state)
+{
+ struct cached_names *names;
+ struct name_list *tmp;
+ time_t now = time(NULL);
+ char key[PATH_MAX];
+
+ slprintf(key, PATH_MAX - 1, "SHARE/%s", cli->desthost);
+
+ names = find_cached_names(key);
+
+ if (names == NULL || (now - names->cache_timeout) > CACHE_TIMEOUT) {
+ struct cached_names *new_names = NULL;
+
+ /* No names cached for this server */
+
+ if (names == NULL) {
+ new_names = (struct cached_names *)
+ malloc(sizeof(struct cached_names));
+
+ ZERO_STRUCTP(new_names);
+ DLIST_ADD(cached_names, new_names);
+
+ } else {
+
+ /* Dispose of out of date name list */
+
+ free_name_list(names->name_list);
+ names->name_list = NULL;
+
+ new_names = names;
+ }
+
+ new_names->result = cli_RNetShareEnum(cli, add_cached_names,
+ &new_names->name_list);
+
+ new_names->cache_timeout = now;
+ new_names->key = strdup(key);
+
+ names = new_names;
+ }
+
+ /* Return names by running callback function. */
+
+ for (tmp = names->name_list; tmp; tmp = tmp->next)
+ fn(tmp->name, tmp->stype, tmp->comment, state);
+
+ return names->result;
+}
diff --git a/source3/smbwrapper/smbw_dir.c b/source3/smbwrapper/smbw_dir.c
index d94ea6ec87..4f6c18eb7f 100644
--- a/source3/smbwrapper/smbw_dir.c
+++ b/source3/smbwrapper/smbw_dir.c
@@ -72,7 +72,6 @@ static void free_dir(struct smbw_dir *dir)
free(dir);
}
-
static struct smbw_dir *cur_dir;
/*****************************************************
@@ -102,7 +101,7 @@ static void smbw_dir_add(struct file_info *finfo, const char *mask,
add a entry to a directory listing
*******************************************************/
static void smbw_share_add(const char *share, uint32 type,
- const char *comment, void *state)
+ const char *comment, void *state)
{
struct file_info finfo;
@@ -205,22 +204,22 @@ int smbw_dir_open(const char *fname)
*p = 0;
smbw_server_add(".",0,"", NULL);
smbw_server_add("..",0,"", NULL);
- cli_NetServerEnum(&srv->cli, srv->server_name, SV_TYPE_DOMAIN_ENUM,
- smbw_server_add, NULL);
+ smbw_NetServerEnum(&srv->cli, srv->server_name,
+ SV_TYPE_DOMAIN_ENUM, smbw_server_add, NULL);
*p = '#';
} else if ((p=strstr(srv->server_name,"#1D"))) {
DEBUG(4,("doing NetServerEnum\n"));
*p = 0;
smbw_server_add(".",0,"", NULL);
smbw_server_add("..",0,"", NULL);
- cli_NetServerEnum(&srv->cli, srv->server_name, SV_TYPE_ALL,
- smbw_server_add, NULL);
+ smbw_NetServerEnum(&srv->cli, srv->server_name, SV_TYPE_ALL,
+ smbw_server_add, NULL);
*p = '#';
} else if (strcmp(srv->cli.dev,"IPC") == 0) {
DEBUG(4,("doing NetShareEnum\n"));
smbw_share_add(".",0,"", NULL);
smbw_share_add("..",0,"", NULL);
- if (cli_RNetShareEnum(&srv->cli, smbw_share_add, NULL) < 0) {
+ if (smbw_RNetShareEnum(&srv->cli, smbw_share_add, NULL) < 0) {
errno = smbw_errno(&srv->cli);
goto failed;
}
generated by cgit (git 2.34.1) at 2024-12-26 03:48:49 +0000