diff --git a/lib/remote_submit.cpp b/lib/remote_submit.cpp
index efb050847e..e90fd0f5be 100644
--- a/lib/remote_submit.cpp
+++ b/lib/remote_submit.cpp
@@ -355,13 +355,33 @@ int submit_jobs(
         }
         for (unsigned int j=0; j<job.infiles.size(); j++) {
             INFILE infile = job.infiles[j];
-            sprintf(buf,
-                "<input_file>\n"
-                "<mode>local_staged</mode>\n"
-                "<source>%s</source>\n"
-                "</input_file>\n",
-                infile.physical_name
-            );
+            switch (infile.mode) {
+            case FILE_MODE_LOCAL_STAGED:
+                sprintf(buf,
+                    "<input_file>\n"
+                    "<mode>local_staged</mode>\n"
+                    "<source>%s</source>\n"
+                    "</input_file>\n",
+                    infile.physical_name
+                );
+                break;
+            case FILE_MODE_REMOTE:
+                sprintf(buf,
+                    "<input_file>\n"
+                    "<mode>remote</mode>\n"
+                    "<url>%s</url>\n"
+                    "<nbytes>%f</nbytes>\n"
+                    "<md5>%s</md5>\n"
+                    "</input_file>\n",
+                    infile.url,
+                    infile.nbytes,
+                    infile.md5
+                );
+                break;
+            default:
+                fprintf(stderr, "unsupported file mode %d\n", infile.mode);
+                exit(1);
+            }
             request += buf;
         }
         request += "</job>\n";
diff --git a/lib/remote_submit.h b/lib/remote_submit.h
index 12aeef9ec3..498ff6a8e0 100644
--- a/lib/remote_submit.h
+++ b/lib/remote_submit.h
@@ -32,12 +32,33 @@ using std::string;
 using std::vector;
 using std::map;
 
+// Input file modes.
+// Only LOCAL_STAGED and REMOTE are implemented now.
+//
+#define FILE_MODE_LOCAL         1
+#define FILE_MODE_LOCAL_STAGED  2
+#define FILE_MODE_SEMILOCAL     3
+#define FILE_MODE_INLINE        4
+#define FILE_MODE_REMOTE        5
+
 struct INFILE {
-    char physical_name[256];    // BOINC physical name
-    char src_path[256];         // path on submit machine
+    int mode;                   // see above
+
     char logical_name[256];
         // filename on execution machine.
-        // not used; could be used to check consistency w/ input template
+        // Supplied by Condor, but not currently used.
+        // could be used to check consistency w/ input template
+    char src_path[256];
+        // path on submit machine
+        // used by Condor GAHP; not part of the API
+
+    // the following used for LOCAL_STAGED
+    char physical_name[256];    // BOINC physical name
+
+    // the following used for REMOTE
+    char url[256];
+    double nbytes;
+    char md5[256];
 };
 
 struct JOB {
diff --git a/samples/condor/boinc_gahp.cpp b/samples/condor/boinc_gahp.cpp
index 93814eab9a..fab6c6a8b7 100644
--- a/samples/condor/boinc_gahp.cpp
+++ b/samples/condor/boinc_gahp.cpp
@@ -236,6 +236,7 @@ int COMMAND::parse_submit(char* p) {
         int ninfiles = atoi(strtok_r(NULL, " ", &p));
         for (int j=0; j<ninfiles; j++) {
             INFILE infile;
+            infile.mode = FILE_MODE_LOCAL_STAGED;
             strlcpy(infile.src_path, strtok_r(NULL, " ", &p), sizeof(infile.src_path));
             strlcpy(infile.logical_name, strtok_r(NULL, " ", &p), sizeof(infile.logical_name));
             job.infiles.push_back(infile);