Author: abrander
Date: 2009-12-27 22:14:51 +0100 (Sun, 27 Dec 2009)
New Revision: 2858
Added:
trunk/plugins/output-facebook/rs-facebook-client-param.c
trunk/plugins/output-facebook/rs-facebook-client-param.h
Log:
Added RSFacebookClientParam used to describe parameters to Facebook in a HTTP
POST request.
Added: trunk/plugins/output-facebook/rs-facebook-client-param.c
===================================================================
--- trunk/plugins/output-facebook/rs-facebook-client-param.c
(rev 0)
+++ trunk/plugins/output-facebook/rs-facebook-client-param.c 2009-12-27
21:14:51 UTC (rev 2858)
@@ -0,0 +1,215 @@
+/*
+ * Copyright (C) 2006-2009 Anders Brander <[email protected]> and
+ * Anders Kvist <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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 "rs-facebook-client-param.h"
+
+typedef struct {
+ gchar *name;
+ gchar *value;
+} ParamPair;
+
+static ParamPair *param_pair_new(gchar *name, gchar *value);
+static void param_pair_free(gpointer data, gpointer user_data);
+static gint param_pair_cmp(gconstpointer a, gconstpointer b);
+
+static ParamPair *
+param_pair_new(gchar *name, gchar *value)
+{
+ ParamPair *pair = g_new(ParamPair, 1);
+ pair->name = name;
+ pair->value = value;
+
+ return pair;
+}
+
+static void
+param_pair_free(gpointer data, gpointer user_data)
+{
+ ParamPair *pair = (ParamPair *) data;
+
+ g_free(pair->name);
+ g_free(pair->value);
+ g_free(pair);
+}
+
+static gint
+param_pair_cmp(gconstpointer a, gconstpointer b)
+{
+ ParamPair *pair_a = (ParamPair *) a;
+ ParamPair *pair_b = (ParamPair *) b;
+
+ if (pair_a == pair_b)
+ return 0;
+
+ if (!pair_a)
+ return 1;
+
+ if (!pair_b)
+ return -1;
+
+ return g_strcmp0(pair_a->name, pair_b->name);
+}
+
+G_DEFINE_TYPE(RSFacebookClientParam, rs_facebook_client_param, G_TYPE_OBJECT)
+
+static void
+rs_facebook_client_param_finalize(GObject *object)
+{
+ RSFacebookClientParam *param = RS_FACEBOOK_CLIENT_PARAM(object);
+
+ g_list_foreach(param->params, param_pair_free, NULL);
+
+ G_OBJECT_CLASS(rs_facebook_client_param_parent_class)->finalize(object);
+}
+
+static void
+rs_facebook_client_param_class_init(RSFacebookClientParamClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->finalize = rs_facebook_client_param_finalize;
+}
+
+static void
+rs_facebook_client_param_init(RSFacebookClientParam *self)
+{
+}
+
+/**
+ * Initialize a new RSFacebookClientParam
+ * @return Anew RSFacebookClientParam
+ */
+RSFacebookClientParam *
+rs_facebook_client_param_new(void)
+{
+ return g_object_new(RS_TYPE_FACEBOOK_CLIENT_PARAM, NULL);
+}
+
+/**
+ * Add a string argument to a RSFacebookClientParam
+ * @param param A RSFacebookClientParam
+ * @param name The name of the parameter
+ * @param value The value of the parameter
+ */
+void
+rs_facebook_client_param_add_string(RSFacebookClientParam *param, const gchar
*name, const gchar *value)
+{
+ g_assert(RS_IS_FACEBOOK_CLIENT_PARAM(param));
+
+ ParamPair *pair = param_pair_new(g_strdup(name), g_strdup(value));
+ param->params = g_list_append(param->params, pair);
+}
+
+/**
+ * Add a string argument to a RSFacebookClientParam
+ * @param param A RSFacebookClientParam
+ * @param name The name of the parameter
+ * @param value The value of the parameter
+ */
+void
+rs_facebook_client_param_add_integer(RSFacebookClientParam *param, const gchar
*name, const gint value)
+{
+ g_assert(RS_IS_FACEBOOK_CLIENT_PARAM(param));
+
+ ParamPair *pair = param_pair_new(g_strdup(name), g_strdup_printf("%d",
value));
+ param->params = g_list_append(param->params, pair);
+}
+
+/**
+ * Get the complete POST string to use for a Facebook request including
signature
+ * @param param A RSFacebookClientParam
+ * @param secret The secret provided by Facebook
+ * @param boundary A string to use as HTTP boundary
+ * @param length If non-NULL, will store the length of the post string returned
+ * @return A newly allocated POST-string, this must be freed with g_free()
+ */
+gchar *
+rs_facebook_client_param_get_post(RSFacebookClientParam *param, const gchar
*secret, const gchar *boundary, gint *length)
+{
+ gchar *post;
+ gchar *signature;
+ GString *str;
+ GString *attachment = NULL;
+ GList *node;
+
+ g_assert(RS_IS_FACEBOOK_CLIENT_PARAM(param));
+ g_assert(secret != NULL);
+ g_assert(boundary != NULL);
+
+ /* Facebook requires parameter list to be sorted, we'll do that */
+ param->params = g_list_sort(param->params, param_pair_cmp);
+
+ /* Build signature */
+ str = g_string_sized_new(10240);
+ for(node = g_list_first(param->params) ; node != NULL; node =
g_list_next(node))
+ {
+ ParamPair *pair = node->data;
+ g_string_append_printf(str, "%s=%s", pair->name, pair->value);
+ }
+ g_string_append_printf(str, "%s", secret);
+ signature = g_compute_checksum_for_string(G_CHECKSUM_MD5, str->str,
str->len);
+ g_string_free(str, TRUE);
+
+ rs_facebook_client_param_add_string(param, "sig", signature);
+ g_free(signature);
+
+ /* Build complete post */
+ str = g_string_sized_new(10240);
+ for(node = g_list_first(param->params) ; node != NULL; node =
g_list_next(node))
+ {
+ ParamPair *pair = node->data;
+
+ /* If we encounter filename, we prepare data to be added last */
+ if (g_strcmp0(pair->name, "filename") == 0)
+ {
+ gchar *contents;
+ gsize length;
+ if (g_file_get_contents(pair->value, &contents,
&length, NULL))
+ {
+ if (!length)
+ g_warning("You must use the length
argument, if you attaches a file");
+ /* We try toallocate everything we need up
front */
+ attachment = g_string_sized_new(length + 200);
+ g_string_append_printf(attachment, "--%s\r\n",
boundary);
+ g_string_append_printf(attachment,
"Content-Disposition: form-data; filename=%s\r\n", pair->value);
+ g_string_append_printf(attachment,
"Content-Type: image/jpg\r\n\r\n");
+ attachment = g_string_append_len(attachment,
contents, length);
+ g_string_append_printf(attachment,
"\r\n--%s\r\n", boundary);
+
+ g_free(contents);
+ }
+ }
+ g_string_append_printf(str, "--%s\r\nContent-Disposition:
form-data; name=\"%s\"\r\n\r\n%s\r\n", boundary, pair->name, pair->value);
+ }
+
+ if (attachment)
+ {
+ str = g_string_append_len(str, attachment->str,
attachment->len);
+ g_string_free(attachment, TRUE);
+ }
+
+ /* Assign length if requested */
+ if (length)
+ *length = str->len;
+
+ post = str->str;
+ g_string_free(str, FALSE);
+
+ return post;
+}
Added: trunk/plugins/output-facebook/rs-facebook-client-param.h
===================================================================
--- trunk/plugins/output-facebook/rs-facebook-client-param.h
(rev 0)
+++ trunk/plugins/output-facebook/rs-facebook-client-param.h 2009-12-27
21:14:51 UTC (rev 2858)
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2006-2009 Anders Brander <[email protected]> and
+ * Anders Kvist <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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.
+ */
+
+#ifndef RS_FACEBOOK_CLIENT_PARAM_H
+#define RS_FACEBOOK_CLIENT_PARAM_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define RS_TYPE_FACEBOOK_CLIENT_PARAM rs_facebook_client_param_get_type()
+#define RS_FACEBOOK_CLIENT_PARAM(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj),
RS_TYPE_FACEBOOK_CLIENT_PARAM, RSFacebookClientParam))
+#define RS_FACEBOOK_CLIENT_PARAM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST
((klass), RS_TYPE_FACEBOOK_CLIENT_PARAM, RSFacebookClientParamClass))
+#define RS_IS_FACEBOOK_CLIENT_PARAM(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj),
RS_TYPE_FACEBOOK_CLIENT_PARAM))
+#define RS_IS_FACEBOOK_CLIENT_PARAM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE
((klass), RS_TYPE_FACEBOOK_CLIENT_PARAM))
+#define RS_FACEBOOK_CLIENT_PARAM_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS
((obj), RS_TYPE_FACEBOOK_CLIENT_PARAM, RSFacebookClientParamClass))
+
+typedef struct {
+ GObject parent;
+
+ GList *params;
+} RSFacebookClientParam;
+
+typedef struct {
+ GObjectClass parent_class;
+} RSFacebookClientParamClass;
+
+GType rs_facebook_client_param_get_type(void);
+
+/**
+ * Initialize a new RSFacebookClientParam
+ * @return Anew RSFacebookClientParam
+ */
+RSFacebookClientParam *
+rs_facebook_client_param_new(void);
+
+/**
+ * Add a string argument to a RSFacebookClientParam
+ * @param param A RSFacebookClientParam
+ * @param name The name of the parameter
+ * @param value The value of the parameter
+ */
+void
+rs_facebook_client_param_add_string(RSFacebookClientParam *param, const gchar
*name, const gchar *value);
+
+/**
+ * Add a string argument to a RSFacebookClientParam
+ * @param param A RSFacebookClientParam
+ * @param name The name of the parameter
+ * @param value The value of the parameter
+ */
+void
+rs_facebook_client_param_add_integer(RSFacebookClientParam *param, const gchar
*name, const gint value);
+
+/**
+ * Get the complete POST string to use for a Facebook request including
signature
+ * @param param A RSFacebookClientParam
+ * @param secret The secret provided by Facebook
+ * @param boundary A string to use as HTTP boundary
+ * @param length If non-NULL, will store the length of the post string returned
+ * @return A newly allocated POST-string, this must be freed with g_free()
+ */
+gchar *
+rs_facebook_client_param_get_post(RSFacebookClientParam *param, const gchar
*secret, const gchar *boundary, gint *length);
+
+G_END_DECLS
+
+#endif /* RS_FACEBOOK_CLIENT_PARAM_H */
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