- remote job submission: add a web RPC for getting an app's templates

(can use this to consistency-check job submission info)

html/user/submit_rpc_handler.php

@@ -420,6 +420,17 @@ function handle_retire_batch($r) {
     echo "<success>1</success>";
 }
 
+function get_templates($r) {
+    $app = get_app($r);
+    list($user, $user_submit) = authenticate_user($r, $app);
+    $in = file_get_string("../../templates/".$app->name."_in");
+    $out = file_get_string("../../templates/".$app->name."_out");
+    if ($in === false || $out === false) {
+        xml_error(-1, "template file missing");
+    }
+    echo "<templates>\n$in\n$out\n</templates>\n";
+}
+
 if (0) {
 $r = simplexml_load_string("
 <query_batch>
@@ -481,6 +492,7 @@ switch ($r->getName()) {
     case 'retire_batch': handle_retire_batch($r); break;
     case 'submit_batch': submit_batch($r); break;
     case 'create_batch': create_batch($r); break;
+    case 'get_templates': get_templates($r); break;
     default: xml_error(-1, "bad command: ".$r->getName());
 }
 

lib/remote_submit.cpp

@@ -15,6 +15,12 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with BOINC.  If not, see <http://www.gnu.org/licenses/>.
 
+// C++ interfaces to web RPCs related to remote job submission,
+// namely those described here:
+// http://boinc.berkeley.edu/trac/wiki/RemoteInputFiles
+// http://boinc.berkeley.edu/trac/wiki/RemoteOutputFiles
+// http://boinc.berkeley.edu/trac/wiki/RemoteJobs
+
 #include <curl/curl.h>
 #include <stdio.h>
 #include <vector>
@@ -383,6 +389,67 @@ int abort_jobs(
     return retval;
 }
 
+int get_templates(
+    const char* project_url,
+    const char* authenticator,
+    const char* app_name,
+    TEMPLATE_DESC &td
+) {
+    string request;
+    char url[1024], buf[256];
+    request = "<get_templates>\n";
+    sprintf(buf, "<authenticator>%s</authenticator>\n", authenticator);
+    request += string(buf);
+    sprintf(buf, "<app_name>%s</app_name>\n", app_name);
+    request += string(buf);
+    request = "</get_templates>\n";
+    sprintf(url, "%ssubmit_rpc_handler.php", project_url);
+    FILE* reply = tmpfile();
+    vector<string> x;
+    int retval = do_http_post(url, request.c_str(), reply, x);
+    if (retval) {
+        fclose(reply);
+        return retval;
+    }
+    fseek(reply, 0, SEEK_SET);
+    MIOFILE mf;
+    XML_PARSER xp(&mf);
+    mf.init_file(reply);
+    return td.parse(xp);
+}
+
+int TEMPLATE_DESC::parse(XML_PARSER& xp) {
+    int retval;
+    string s;
+    while (!xp.get_tag()) {
+        if (xp.match_tag("error")) {
+            while (!xp.get_tag()) {
+                if (xp.parse_int("error_num", retval)) {
+                    return retval;
+                }
+            }
+            return -1;
+        } 
+        if (xp.match_tag("input_template")) {
+            while (!xp.get_tag()) {
+                if (xp.match_tag("/input_template")) break;
+                if (xp.parse_string("open_name", s)) {
+                    input_files.push_back(s);
+                }
+            }
+        }
+        if (xp.match_tag("output_template")) {
+            while (!xp.get_tag()) {
+                if (xp.match_tag("/output_template")) break;
+                if (xp.parse_string("open_name", s)) {
+                    output_files.push_back(s);
+                }
+            }
+        }
+    }
+    return 0;
+}
+
 int get_output_file(
     const char* project_url,
     const char* authenticator,

lib/remote_submit.h

@@ -69,6 +69,13 @@ struct FETCH_OUTPUT_REQ {
     vector<string> file_names;
 };
 
+struct TEMPLATE_DESC {
+    vector<string> input_files;
+    vector<string> output_files;
+
+    int parse(XML_PARSER&);
+};
+
 //////////////////////////
 
 
@@ -124,3 +131,10 @@ extern int abort_jobs(
     string batch_name,
     vector<string> &job_names
 );
+
+extern int get_templates(
+    const char* project_url,
+    const char* authenticator,
+    const char* app_name,
+    TEMPLATE_DESC&
+);