s3: in sys_popen(), validate input before opening the pipe.

[kai/samba.git] / source3 / lib / tallocmsg.c

diff --git a/source3/lib/tallocmsg.c b/source3/lib/tallocmsg.c
index a0987aba77d4c0b9f069fdd8701f7840fd5894c0..9a0ce8ada18f324f991f33a457936bc12ae9b6a4 100644 (file)
--- a/source3/lib/tallocmsg.c
+++ b/source3/lib/tallocmsg.c
@@ -1,23 +1,23 @@
 /* 
-   samba -- Unix SMB/Netbios implementation.
-   Copyright (C) 2001 by Martin Pool
-   
+   samba -- Unix SMB/CIFS implementation.
+   Copyright (C) 2001, 2002 by Martin Pool
+
    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
+   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, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "includes.h"
+#include "messages.h"
 
 /**
  * @file tallocmsg.c
@@ -25,25 +25,101 @@
  * Glue code between talloc profiling and the Samba messaging system.
  **/
 
+struct msg_pool_usage_state {
+       TALLOC_CTX *mem_ctx;
+       ssize_t len;
+       size_t buflen;
+       char *s;
+};
+
+static void msg_pool_usage_helper(const void *ptr, int depth, int max_depth, int is_ref, void *_s)
+{
+       const char *name = talloc_get_name(ptr);
+       struct msg_pool_usage_state *state = (struct msg_pool_usage_state *)_s;
+
+       if (is_ref) {
+               sprintf_append(state->mem_ctx, &state->s, &state->len, &state->buflen,
+                              "%*sreference to: %s\n", depth*4, "", name);
+               return;
+       }
+
+       if (depth == 0) {
+               sprintf_append(state->mem_ctx, &state->s, &state->len, &state->buflen,
+                              "%stalloc report on '%s' (total %6lu bytes in %3lu blocks)\n", 
+                              (max_depth < 0 ? "full " :""), name,
+                              (unsigned long)talloc_total_size(ptr),
+                              (unsigned long)talloc_total_blocks(ptr));
+               return;
+       }
+
+       if (strcmp(name, "char") == 0) {
+               /*
+                * Print out the first 50 bytes of the string
+                */
+               sprintf_append(state->mem_ctx, &state->s, &state->len,
+                              &state->buflen,
+                              "%*s%-30s contains %6lu bytes in %3lu blocks "
+                              "(ref %d): %*s\n", depth*4, "",
+                              name,
+                              (unsigned long)talloc_total_size(ptr),
+                              (unsigned long)talloc_total_blocks(ptr),
+                              talloc_reference_count(ptr),
+                              MIN(50, talloc_get_size(ptr)),
+                              (const char *)ptr);
+               return;
+       }
+
+       sprintf_append(state->mem_ctx, &state->s, &state->len, &state->buflen,
+                      "%*s%-30s contains %6lu bytes in %3lu blocks (ref %d)\n", 
+                      depth*4, "",
+                      name,
+                      (unsigned long)talloc_total_size(ptr),
+                      (unsigned long)talloc_total_blocks(ptr),
+                      talloc_reference_count(ptr));
+}
 
 /**
  * Respond to a POOL_USAGE message by sending back string form of memory
  * usage stats.
  **/
-void msg_pool_usage(int msg_type, pid_t src_pid, void *buf, size_t len)
+static void msg_pool_usage(struct messaging_context *msg_ctx,
+                          void *private_data, 
+                          uint32_t msg_type, 
+                          struct server_id src,
+                          DATA_BLOB *data)
 {
-       char *reply = "no memory usage info yet";
-       
+       struct msg_pool_usage_state state;
+
+       SMB_ASSERT(msg_type == MSG_REQ_POOL_USAGE);
+
        DEBUG(2,("Got POOL_USAGE\n"));
-       message_send_pid(src_pid, MSG_POOL_USAGE,
-                        reply, strlen(reply)+1, True);
+
+       state.mem_ctx = talloc_init("msg_pool_usage");
+       if (!state.mem_ctx) {
+               return;
+       }
+       state.len       = 0;
+       state.buflen    = 512;
+       state.s         = NULL;
+
+       talloc_report_depth_cb(NULL, 0, -1, msg_pool_usage_helper, &state);
+
+       if (!state.s) {
+               talloc_destroy(state.mem_ctx);
+               return;
+       }
+
+       messaging_send_buf(msg_ctx, src, MSG_POOL_USAGE,
+                          (uint8 *)state.s, strlen(state.s)+1);
+
+       talloc_destroy(state.mem_ctx);
 }
 
 /**
  * Register handler for MSG_REQ_POOL_USAGE
  **/
-void register_msg_pool_usage(void)
+void register_msg_pool_usage(struct messaging_context *msg_ctx)
 {
-       message_register(MSG_REQ_POOL_USAGE, msg_pool_usage);
+       messaging_register(msg_ctx, NULL, MSG_REQ_POOL_USAGE, msg_pool_usage);
        DEBUG(2, ("Registered MSG_REQ_POOL_USAGE\n"));
 }