Refactor code into utils, mfapi and mfshell

- utils is the low level library used by the others
 - mfapi uses utils and implements the api and some wrappers
 - mfshell uses mfapi and utils to provide a shell

mfapi/apicalls/user_session.c

@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2013 Bryan Christ <bryan.christ@mediafire.com>
+ *               2014 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 <string.h>
+#include <inttypes.h>
+
+#include <curl/curl.h>
+#include <jansson.h>
+
+#include "../apicalls.h"
+#include "../mfconn.h"
+#include "../../utils/http.h"
+#include "../../utils/strings.h"
+#include "../../utils/json.h"
+
+static int
+_decode_get_session_token(http_t *conn, void *data);
+
+struct user_get_session_token_response
+{
+    uint32_t    secret_key;
+    char        *secret_time;
+    char        *session_token;
+};
+
+int
+mfconn_api_user_get_session_token(mfconn_t *mfconn, char *server,
+        char *username, char *password, int app_id, char *app_key,
+        uint32_t *secret_key, char **secret_time, char **session_token)
+{
+    char        *login_url;
+    char        *post_args;
+    char        *user_signature;
+    int         retval;
+    struct user_get_session_token_response response;
+
+    if(mfconn == NULL) return -1;
+
+    // configure url for operation
+    login_url = strdup_printf("https://%s/api/user/get_session_token.php",
+        server);
+
+    // create user signature
+    user_signature = mfconn_create_user_signature(mfconn, username, password, app_id, app_key);
+
+    post_args = strdup_printf(
+        "email=%s"
+        "&password=%s"
+        "&application_id=35860"
+        "&signature=%s"
+        "&token_version=2"
+        "&response_format=json",
+        username, password, user_signature);
+
+    http_t *conn = http_create();
+    retval = http_post_buf(conn, login_url, post_args, _decode_get_session_token, (void *)(&response));
+    http_destroy(conn);
+
+    free(login_url);
+    free(post_args);
+
+    *secret_key = response.secret_key;
+    *secret_time = response.secret_time;
+    *session_token = response.session_token;
+
+    return retval;
+}
+
+static int
+_decode_get_session_token(http_t *conn, void *user_ptr)
+{
+    json_error_t    error;
+    json_t          *root = NULL;
+    json_t          *data;
+    json_t          *session_token;
+    json_t          *secret_key;
+    json_t          *secret_time;
+    struct user_get_session_token_response *response;
+
+    if(user_ptr == NULL) return -1;
+
+    response = (struct user_get_session_token_response *)user_ptr;
+
+    root = http_parse_buf_json(conn, 0, &error);
+
+    data = json_object_by_path(root,"response");
+    if(data == NULL) return -1;
+
+    session_token = json_object_get(data,"session_token");
+    if(session_token == NULL)
+    {
+        json_decref(root);
+        return -1;
+    }
+
+    response->session_token = strdup(json_string_value(session_token));
+
+    secret_key = json_object_get(data,"secret_key");
+    if(secret_key != NULL)
+        response->secret_key = atoll(json_string_value(secret_key));
+
+    /*
+        time looks like a float but we must store it as a string to
+        remain congruent with the server on decimal place presentation.
+    */
+    secret_time = json_object_get(data,"time");
+    if(secret_time != NULL)
+       response->secret_time = strdup(json_string_value(secret_time));
+
+    if(root != NULL) json_decref(root);
+
+    return 0;
+}
+
+// sample user callback
+/*
+static void
+_mycallback(char *data,size_t sz,cfile_t *cfile)
+{
+    double  bytes_read;
+    double  bytes_total;
+
+    bytes_read = cfile_get_rx_count(cfile);
+    bytes_total = cfile_get_rx_length(cfile);
+
+    printf("bytes read: %.0f\n\r",bytes_read);
+
+    if(bytes_read == bytes_total)
+    {
+        printf("transfer complete!\n\r");
+    }
+
+    return;
+}
+*/