- fix a few unlikely but possible file-descriptor leaks

- remote job submission: always compute fraction done when showing
    batch list; check for nonexistent user

checkin_notes

@@ -6554,3 +6554,18 @@ David  1 Nov 2012
 		common_defs.h
 		filesys.h
 		gui_rpc_client.h
+
+David  1 Nov 2012
+    - fix a few unlikely but possible file-descriptor leaks
+    - remote job submission: always compute fraction done when showing
+        batch list; check for nonexistent user
+
+    client/
+        cs_scheduler.cpp
+    html/user/
+        submit.php
+    lib/
+        cert_sig.cpp
+        mem_usage.cpp
+    sched/
+        sched_timezone.cpp

client/cs_scheduler.cpp

@@ -369,6 +369,7 @@ int CLIENT_STATE::make_scheduler_request(PROJECT* p) {
         fprintf(f, "<client_opaque>\n<![CDATA[\n");
         copy_stream(cof, f);
         fprintf(f, "\n]]>\n</client_opaque>\n");
+        fclose(cof);
     }
 
     fprintf(f, "</scheduler_request>\n");

html/user/submit.php

@@ -31,7 +31,7 @@ ini_set('display_startup_errors', true);
 //
 function show_batches($batches) {
     foreach ($batches as $batch) {
-        if ($batch->state < BATCH_STATE_COMPLETE) {
+        if ($batch->state < BATCH_STATE_COMPLETE || $batch->fraction_done < 1) {
             $wus = BoincWorkunit::enum("batch = $batch->id");
             $batch = get_batch_params($batch, $wus);
         }
@@ -42,7 +42,11 @@ function show_batches($batches) {
             $batch->app_name = "unknown";
         }
         $user = BoincUser::lookup_id($batch->user_id);
-        $batch->user_name = $user->name;
+        if ($user) {
+            $batch->user_name = $user->name;
+        } else {
+            $batch->user_name = "missing user $batch->user_id";
+        }
     }
 
     $first = true;

lib/cert_sig.cpp

@@ -150,6 +150,7 @@ int CERT_SIGS::parse_file(const char* filename) {
     mf.init_file(f);
     XML_PARSER xp(&mf);
     if (!xp.parse_start("signatures")) {
+        fclose(f);
         return ERR_XML_PARSE;
     }
     retval = this->parse(xp);

lib/mem_usage.cpp

@@ -118,6 +118,7 @@ int mem_usage(double& vm_usage, double& resident_set) {
             ++p; // move past space
         }
         if (!p) {
+            fclose(f);
             return ERR_NOT_IMPLEMENTED;
         }
 

sched/sched_timezone.cpp

@@ -124,14 +124,18 @@ URLTYPE* read_download_list() {
     }
 
     // read in lines from file
+    //
     while (1) {
         // allocate memory in blocks
         if ((count % BLOCKSIZE)==0) {
             cached=(URLTYPE *)realloc(cached, (count+BLOCKSIZE)*sizeof(URLTYPE));
-            if (!cached) return NULL;
+            if (!cached) {
+                fclose(fp);
+                return NULL;
+            }
         }
-        // read timezone offset and URL from file, and store in cache
-        // list
+        // read timezone offset and URL from file, and store in cache list
+        //
         if (2==fscanf(fp, "%d %s", &(cached[count].zone), cached[count].name)) {
             count++;
         } else {