add support for instant uploads

mfapi/apicalls/upload_instant.c

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2015 Johannes Schauer <j.schauer@email.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2, as published by
+ * the Free Software Foundation.
+ *
+ * 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., 51
+ * Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "../../utils/http.h"
+#include "../mfconn.h"
+#include "../apicalls.h"        // IWYU pragma: keep
+
+int mfconn_api_upload_instant(mfconn * conn, const char *quick_key,
+                              const char *filename, const char *hash,
+                              uint64_t size, const char *folder_key)
+{
+    const char     *api_call;
+    int             retval;
+    mfhttp         *http;
+    int             i;
+
+    if (conn == NULL)
+        return -1;
+
+    if (hash == NULL || hash[0] == '\0') {
+        fprintf(stderr, "hash must not be empty\n");
+        return -1;
+    }
+
+    for (i = 0; i < mfconn_get_max_num_retries(conn); i++) {
+        if (quick_key != NULL && quick_key[0] != '\0') {
+            // update an existing file
+            api_call = mfconn_create_signed_get(conn, 0, "upload/instant.php",
+                                                "?quick_key=%s"
+                                                "&size=%" PRIu64
+                                                "&hash=%s"
+                                                "&response_format=json",
+                                                quick_key, size, hash);
+        } else if (filename != NULL && filename[0] != '\0'
+                && folder_key != 0) {
+            // upload a new file
+            api_call = mfconn_create_signed_get(conn, 0, "upload/instant.php",
+                                                "?folder_key=%s"
+                                                "&filename=%s"
+                                                "&size=%" PRIu64
+                                                "&hash=%s"
+                                                "&response_format=json",
+                                                folder_key, filename, size,
+                                                hash);
+        } else {
+            fprintf(stderr, "you must either pass a quick_key or a filename "
+                    "and folder_key\n");
+            return -1;
+        }
+
+        if (api_call == NULL) {
+            fprintf(stderr, "mfconn_create_signed_get failed\n");
+            return -1;
+        }
+
+        http = http_create();
+        retval =
+            http_get_buf(http, api_call, mfapi_decode_common, "upload/instant");
+        http_destroy(http);
+        mfconn_update_secret_key(conn);
+
+        free((void *)api_call);
+
+        if (retval != 127 && retval != 28)
+            break;
+
+        // if there was either a curl timeout or a token error, get a new
+        // token and try again
+        //
+        // on a curl timeout we get a new token because it is likely that we
+        // lost signature synchronization (we don't know whether the server
+        // accepted or rejected the last call)
+        fprintf(stderr, "got error %d - negotiate a new token\n", retval);
+        retval = mfconn_refresh_token(conn);
+        if (retval != 0) {
+            fprintf(stderr, "failed to get a new token\n");
+            break;
+        }
+    }
+
+    return retval;
+}