avoid dup hosts

svn path=/trunk/boinc/; revision=9629

checkin_notes

@@ -2734,3 +2734,24 @@ David  9 Mar 2006
 
     client/
         cs_scheduler.C
+
+David  9 Mar 2006
+    - user web: minor fixes
+
+    html/user/
+        debug.php (removed)
+        profile_search_action.php
+        user_search_action.php
+
+David  9 Mar 2006
+    - Scheduler: avoid creating redundant host records.
+        If a scheduler request has zero host ID but non-blank host CPID,
+        see if there's a host record in the DB with that CPID;
+        if so, pick the most recent (i.e. largest ID)
+        and use it (rather than creating a new host record).
+
+        This change means that when you detach/reattach to a project,
+        you won't get a new host record.  Woo hoo!
+
+    sched/
+        handle_request.C

client/cs_scheduler.C

@@ -1190,13 +1190,13 @@ void CLIENT_STATE::scale_duration_correction_factors(double factor) {
 }
 
 // Choose a new host CPID.
-// If using account manager,
-// do scheduler RPCs to all projects to propagate the CPID
+// If using account manager, do scheduler RPCs
+// to all acct-mgr-attached projects to propagate the CPID
 //
 void CLIENT_STATE::generate_new_host_cpid() {
     host_info.generate_host_cpid();
-    if (strlen(acct_mgr_info.acct_mgr_url)) {
     for (unsigned int i=0; i<projects.size(); i++) {
+        if (projects[i]->attached_via_acct_mgr) {
             projects[i]->sched_rpc_pending = true;
             projects[i]->min_rpc_time = now + 15;
         }

doc/boinc_news.inc

@@ -11,9 +11,9 @@ array("March 5, 2006",
 array("March 3, 2006",
     "<a href=http://qah.uni-muenster.de/>Quantum Monte Carlo at Home</a>
     announces the public release of the first chemistry BOINC project.
-    This project studies the structure and reactivity of molecules
-    using Quantum Chemistry, whose vastly complex equations
-    require huge amounts of computing power.
+    This project, based at the University of M&uuml;nster in Germany,
+    studies the structure and reactivity of molecules using Quantum Chemistry,
+    whose vastly complex equations require huge amounts of computing power.
     "
 ),
 array("February 24, 2006",

html/user/debug.php

@@ -1,44 +0,0 @@
-<?php
-
-require_once("../inc/db.inc");
-require_once("../inc/util.inc");
-
-init_session();
-
-page_head("Download debugging files");
-
-echo "
-    <h2>Download debugging files</h2>
-    <p>
-    <b>Windows users</b>:
-    <p>
-    If the BOINC application crashes, it is very helpful if you mail us the stack trace
-    (which shows exactly where the crash occurred).
-    To do this, you will need to have the symbol file on your computer.
-    <p>
-    <b>BOINC core client</b>
-    <p>
-    The zipped symbol file(s) are for the BOINC core client 2.25
-    (both GUI and CLI versions) are here:
-    <a href=http://setiboinc.ssl.berkeley.edu/ap/download/boinc_225_pdb.zip>boinc_225_pdb.zip</a>
-    <p>
-    Place the extracted file(s) in the same directory as the executable(s)
-    (usually <code>C:/Program Files/BOINC</code>).
-    <p>
-    <p>
-    <h2>Sending Debug Results</h2>
-    <p>
-    The files we are interested in are user.dmp and drwtsn32.log, they can be found in the Dr. Watson folder
-    (usually <code>C:/Documents and Settings/All Users/Application Data/Dr Watson</code>).
-    <p>
-    We would perfer the files to be zipped up with a compression program like winzip or gzip.
-    <p>
-    Be sure to include which version of BOINC and the project applications you are using in the email.
-    <p>
-    Thanks for helping make BOINC a better product.
-    <p>
-    <p>
-";
-
-    page_tail();
-?>

html/user/profile_search_action.php

@@ -10,8 +10,8 @@ function show_profile_link($profile, $n) {
 
 db_init();
 
-$search_string = $_GET['search_string'];
-$offset = $_GET['offset'];
+$search_string = get_str('search_string');
+$offset = get_int('offset', true);
 if (!$offset) $offset=0;
 $count = 10;
 

html/user/user_search_action.php

@@ -60,9 +60,7 @@ $default_sort = 'id';
 $allowed_order = array('id', 'name', 'create_time','country', 'total_credit', 'expavg_credit');
 $nice_names    = array('', 'sorted by name', 'sorted by date joined', 'sorted by country', 'sorted by total credit', 'sorted by recent average credit');
 
-/* Sanity check on order */
-if (!isset ($_GET['order']) || 
-    !in_array ($_GET['order'], $allowed_order)) {
+if (!isset ($_GET['order']) || !in_array ($_GET['order'], $allowed_order)) {
     $order = $default_sort;
     $nice_name='';
 } else {
@@ -70,7 +68,7 @@ if (!isset ($_GET['order']) ||
     $nice_name = $nice_names[array_search($order, $allowed_order)];
 }
 
-if (isset($_GET['search_string'])) $search_string = $_GET['search_string'];
+$search_string = get_str('search_string');
 
 if (isset($_GET['offset'])) $offset = $_GET['offset'];
 if (!is_numeric($offset) || $offset<0) $offset=0;
@@ -91,8 +89,7 @@ page_head("Search results");
 
 if (strlen($search_string)>=3) {
     $urls = urlencode($search_string);
-    $s = str_replace('_', '\\\\_', $search_string);
-    $s = str_replace('%', '\\\\%', $s);
+    $s = escape_pattern($search_string);
     $q = "select * from user where name like '$s%' order by $order $upordown limit $offset,$count";
     $result = mysql_query($q);
     

sched/handle_request.C

@@ -108,6 +108,23 @@ void unlock_sched(SCHEDULER_REPLY& reply) {
     close(reply.lockfile_fd);
 }
 
+// find the user's most recent host with given host CPID
+//
+bool find_host_by_cpid(DB_USER& user, char* host_cpid, DB_HOST& host) {
+    char buf[256], buf2[256];
+    sprintf(buf, "%s%s", host_cpid, user.email_addr);
+    md5_block((const unsigned char*)buf, strlen(buf), buf2);
+
+    sprintf(buf,
+        "where userid=%d and host_cpid='%s' order by id desc", user.id, buf2
+    );
+    if (!host.enumerate(buf)) {
+        host.end_enumerate();
+        return true;
+    }
+    return false;
+}
+
 // Based on the info in the request message,
 // look up the host and its user, and make sure the authenticator matches.
 // Some special cases:
@@ -118,7 +135,7 @@ void unlock_sched(SCHEDULER_REPLY& reply) {
 //     then follow links to find the proper host
 //
 // POSTCONDITION:
-// If this returns zero, then:
+// If this function returns zero, then:
 // - reply.host contains a valid host record (possibly new)
 // - reply.user contains a valid user record
 // - if user belongs to a team, reply.team contains team record
@@ -165,8 +182,7 @@ int authenticate_user(SCHEDULER_REQUEST& sreq, SCHEDULER_REPLY& reply) {
         );
 
         strlcpy(
-            user.authenticator, sreq.authenticator,
-            sizeof(user.authenticator)
+            user.authenticator, sreq.authenticator, sizeof(user.authenticator)
         );
         sprintf(buf, "where authenticator='%s'", user.authenticator);
         retval = user.lookup(buf);
@@ -215,8 +231,8 @@ int authenticate_user(SCHEDULER_REQUEST& sreq, SCHEDULER_REPLY& reply) {
             goto make_new_host;
         }
     } else {
-
-        // here no hostid was given; we'll have to create a new host record
+        // Here no hostid was given, or the ID was bad.
+        // Look up the user, then create a new host record
         //
 lookup_user_and_make_new_host:
         strlcpy(
@@ -241,7 +257,25 @@ lookup_user_and_make_new_host:
             return ERR_AUTHENTICATOR;
         }
         reply.user = user;
+
+        // If host CPID is present,
+        // scan backwards through this user's hosts,
+        // looking for one with the same host CPID.
+        // If we find one, it means the user detached and reattached.
+        // Use the existing host record.
+        //
+        if (strlen(sreq.host.host_cpid)) {
+            if (find_host_by_cpid(user, sreq.host.host_cpid, host)) {
+                goto got_host;
+            }
+        }
+
 make_new_host:
+        // either of the above cases,
+        // or host ID didn't match user ID,
+        // or RPC seqno was too low.
+        //
+        // Create a new host.
         // reply.user is filled in and valid at this point
         //
         host = sreq.host;
@@ -262,6 +296,7 @@ make_new_host:
         }
         host.id = boinc_db.insert_id();
 
+got_host:
         reply.host = host;
         reply.hostid = reply.host.id;
             // this tells client to updates its host ID
@@ -287,7 +322,7 @@ make_new_host:
         reply.email_hash
     );
 
-    // see if new cross-project ID
+    // if new user CPID, update user record
     //
     if (strlen(sreq.cross_project_id)) {
         if (strcmp(sreq.cross_project_id, reply.user.cross_project_id)) {