From 567b81d9dd3bd0a0cd8df4a3d464b3273576fe73 Mon Sep 17 00:00:00 2001
From: asterix <asterix@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Wed, 28 Sep 2011 16:53:31 +0000
Subject: [PATCH] Add first implementation of http server module.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@5117 38d2e660-2303-0410-9eaa-f027e97ec537
---
 bertos/cfg/cfg_http.h                         |  64 ++++++
 bertos/hw/hw_http.c                           |  56 +++++
 bertos/hw/hw_http.h                           |  49 +++++
 bertos/net/http.c                             | 198 ++++++++++++++++++
 bertos/net/http.h                             |  67 ++++++
 .../sam3x-ek_http_server/cfg/cfg_http.h       |  64 ++++++
 boards/sam3x-ek/hw/hw_http.c                  |  56 +++++
 boards/sam3x-ek/hw/hw_http.h                  |  49 +++++
 8 files changed, 603 insertions(+)
 create mode 100644 bertos/cfg/cfg_http.h
 create mode 100644 bertos/hw/hw_http.c
 create mode 100644 bertos/hw/hw_http.h
 create mode 100644 bertos/net/http.c
 create mode 100644 bertos/net/http.h
 create mode 100644 boards/sam3x-ek/examples/sam3x-ek_http_server/cfg/cfg_http.h
 create mode 100644 boards/sam3x-ek/hw/hw_http.c
 create mode 100644 boards/sam3x-ek/hw/hw_http.h

diff --git a/bertos/cfg/cfg_http.h b/bertos/cfg/cfg_http.h
new file mode 100644
index 00000000..0aba5f02
--- /dev/null
+++ b/bertos/cfg/cfg_http.h
@@ -0,0 +1,64 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief Configuration file for the HTTP module.
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+#ifndef CFG_HTTP_H
+#define CFG_HTTP_H
+
+/**
+ * Module logging level.
+ *
+ * $WIZ$ type = "enum"
+ * $WIZ$ value_list = "log_level"
+ */
+#define HTTP_LOG_LEVEL      LOG_LVL_INFO
+
+/**
+ * Module logging format.
+ *
+ * $WIZ$ type = "enum"
+ * $WIZ$ value_list = "log_format"
+ */
+#define HTTP_LOG_FORMAT     LOG_FMT_VERBOSE
+
+/**
+ * Default start page to load
+ *
+ * $WIZ$ type = "str"
+ */
+#define HTTP_DEFAULT_PAGE      "index.htm"
+
+#endif /* CFG_HTTP_H */
diff --git a/bertos/hw/hw_http.c b/bertos/hw/hw_http.c
new file mode 100644
index 00000000..7d9ba7b3
--- /dev/null
+++ b/bertos/hw/hw_http.c
@@ -0,0 +1,56 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Simple Http server error pages.
+ *
+ * \author Daniele Basile <asteix@develer.com>
+ */
+
+#include "hw_http.h"
+
+const char http_file_not_found[] = "\
+<!DOCTYPE html PUBLIC \"-//IETF//DTD HTML 2.0//EN\"> \
+<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=ISO-8859-1\"> \
+<title>404 Not Found</title></head><body><img src=\"bertos_logo_jpg.jpg\"><h1>404 Not Found</h1>\
+<p>The requested URL was not found on this server.</p><hr>\
+<address>BeRTOS simple HTTP server</address></body></html>";
+
+const size_t http_file_not_found_len = sizeof(http_file_not_found);
+
+const char http_sd_not_present[] = " \
+<!DOCTYPE html PUBLIC \"-//IETF//DTD HTML 2.0//EN\">  \
+<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=ISO-8859-1\">  \
+<title>BeRTOS simple HTTP Server</title></head><body><img src=\"bertos_logo_jpg.jpg\"> \
+<h1>BeRTOS simple HTTP Server</h1><p>Simple Http server, the site's pages are stored on SD card, check it if is present.</p><hr>\
+<a href=\"http://www.bertos.org\">www.BeRTOS.org</a></body></html> \
+";
+const size_t http_sd_not_present_len = sizeof(http_sd_not_present);
diff --git a/bertos/hw/hw_http.h b/bertos/hw/hw_http.h
new file mode 100644
index 00000000..88ec1bf7
--- /dev/null
+++ b/bertos/hw/hw_http.h
@@ -0,0 +1,49 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Simple Http server error pages.
+ *
+ * \author Daniele Basile <asteix@develer.com>
+ */
+
+#ifndef HW_HTTP_H
+#define HW_HTTP_H
+
+#include <cpu/types.h>
+
+extern const char http_file_not_found[];
+extern const size_t http_file_not_found_len;
+
+extern const char http_sd_not_present[];
+extern const size_t http_sd_not_present_len;
+
+#endif /*  HW_HTTP_H */
diff --git a/bertos/net/http.c b/bertos/net/http.c
new file mode 100644
index 00000000..235401cd
--- /dev/null
+++ b/bertos/net/http.c
@@ -0,0 +1,198 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ *
+ * \brief Simple Http server.
+ *
+ * This simple web server read the site's pages from SD card, and manage
+ * the cases where SD is not present or page not found, using embedded pages.
+ * Quering from browser the /status page, the server return a json dictionary where are store
+ * some board status info, like board temperature, up-time, etc.
+ */
+
+#include "http.h"
+
+#include "hw/hw_sd.h"
+#include "hw/hw_http.h"
+
+#include "cfg/cfg_http.h"
+
+// Define logging setting (for cfg/log.h module).
+#define LOG_LEVEL         HTTP_LOG_LEVEL
+#define LOG_VERBOSITY     HTTP_LOG_FORMAT
+#include <cfg/log.h>
+
+#include <drv/sd.h>
+
+#include <fs/fat.h>
+
+#include <stdio.h>
+#include <string.h>
+
+
+static const char http_html_hdr_200[] = "HTTP/1.1 200 OK\r\nContent-type: text/html\r\n\r\n";
+static const char http_html_hdr_404[] = "HTTP/1.1 404 Not Found\r\nContent-type: text/html\r\n\r\n";
+
+void http_sendOk(struct netconn *client)
+{
+	netconn_write(client, http_html_hdr_200, sizeof(http_html_hdr_200) - 1, NETCONN_NOCOPY);
+}
+
+void http_sendFileNotFound(struct netconn *client)
+{
+	netconn_write(client, http_html_hdr_404, sizeof(http_html_hdr_404) - 1, NETCONN_NOCOPY);
+}
+
+
+static void get_fileName(char *revc_buf, char *name, size_t len)
+{
+	char *p = strstr(revc_buf, "GET");
+	if (p)
+	{
+		//skip the "/" in get string request
+		p += sizeof("GET") + 1;
+		for (size_t i = 0; *p != ' '; i++,p++)
+		{
+			if (i > len)
+				break;
+			name[i] = *p;
+		}
+	}
+}
+
+static http_gci_handler_t cgi_search(const char *name,  HttpCGI *table)
+{
+	for (int i = 0; table[i].name; i++)
+	{
+		if (!strcmp(table[i].name, name))
+			return table[i].handler;
+	}
+	return NULL;
+}
+
+static uint8_t tx_buf[2048];
+static char file_name[80];
+
+void http_server(struct netconn *server, struct HttpCGI *table)
+{
+	// SD fat filesystem context
+	Sd sd;
+	FATFS fs;
+	FatFile in_file;
+	struct netconn *client;
+	struct netbuf *rx_buf_conn;
+	char *rx_buf;
+	u16_t len;
+	FRESULT result;
+
+	client = netconn_accept(server);
+	if (!client)
+		return;
+
+	rx_buf_conn = netconn_recv(client);
+	if (rx_buf_conn)
+	{
+		netbuf_data(rx_buf_conn, (void **)&rx_buf, &len);
+		if (rx_buf)
+		{
+			memset(file_name, 0, sizeof(file_name));
+			get_fileName(rx_buf, file_name, sizeof(file_name));
+
+			LOG_INFO("Search %s\n", file_name);
+			if (strlen(file_name) == 0)
+				strcpy(file_name, HTTP_DEFAULT_PAGE);
+
+			http_gci_handler_t cgi = cgi_search(file_name,  table);
+			if (cgi)
+			{
+				cgi(rx_buf, client);
+			}
+			else if (SD_CARD_PRESENT())
+			{
+				bool sd_ok = sd_init(&sd, NULL, 0);
+				if (sd_ok)
+				{
+					LOG_INFO("Mount FAT filesystem.\n");
+					result = f_mount(0, &fs);
+					if (result != FR_OK)
+					{
+						LOG_ERR("Mounting FAT volumes error[%d]\n", result);
+						sd_ok = false;
+						f_mount(0, NULL);
+					}
+
+					if (sd_ok)
+					{
+						result = fatfile_open(&in_file, file_name,  FA_OPEN_EXISTING | FA_READ);
+
+						size_t count = 0;
+						if (result == FR_OK)
+						{
+							LOG_INFO("Opened file '%s' size %ld\n", file_name, in_file.fat_file.fsize);
+
+							http_sendOk(client);
+
+							while (count < in_file.fat_file.fsize)
+							{
+								int len = kfile_read(&in_file.fd, tx_buf, sizeof(tx_buf));
+								netconn_write(client, tx_buf, len, NETCONN_COPY);
+								count += len;
+							}
+
+							kfile_flush(&in_file.fd);
+							kfile_close(&in_file.fd);
+
+							LOG_INFO("Sent: %d\n", count);
+						}
+						else
+						{
+							LOG_ERR("Unable to open file: '%s' error[%d]\n",  file_name, result);
+							http_sendFileNotFound(client);
+							netconn_write(client, http_file_not_found, http_file_not_found_len - 1, NETCONN_NOCOPY);
+						}
+					}
+				}
+				f_mount(0, NULL);
+				LOG_INFO("Umount FAT filesystem.\n");
+			}
+			else
+			{
+				http_sendFileNotFound(client);
+				netconn_write(client, http_sd_not_present, http_sd_not_present_len, NETCONN_NOCOPY);
+			}
+		}
+		netconn_close(client);
+		netbuf_delete(rx_buf_conn);
+	}
+	netconn_delete(client);
+}
diff --git a/bertos/net/http.h b/bertos/net/http.h
new file mode 100644
index 00000000..6b5b3bc1
--- /dev/null
+++ b/bertos/net/http.h
@@ -0,0 +1,67 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief Simple HTTP server
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ *
+ * $WIZ$ module_name = "http"
+ * $WIZ$ module_configuration = "bertos/cfg/cfg_http.h"
+ * $WIZ$ module_depends = "lwip", "kfile", "sd"
+ * $WIZ$ module_hw = "bertos/hw/hw_http.h", "bertos/hw/hw_http.c"
+ */
+
+#ifndef NET_HTTP_H
+#define NET_HTTP_H
+
+
+#include <netif/ethernetif.h>
+
+#include <lwip/ip.h>
+#include <lwip/ip_addr.h>
+#include <lwip/netif.h>
+#include <lwip/tcpip.h>
+#include <lwip/dhcp.h>
+
+typedef int (*http_gci_handler_t)(char *revc_buf, struct netconn *client);
+
+typedef struct HttpCGI
+{
+	const char *name;
+	http_gci_handler_t handler;
+} HttpCGI;
+
+void http_sendOk(struct netconn *client);
+void http_sendFileNotFound(struct netconn *client);
+void http_server(struct netconn *server, struct HttpCGI *gci);
+
+#endif /* NET_HTTP_H */
diff --git a/boards/sam3x-ek/examples/sam3x-ek_http_server/cfg/cfg_http.h b/boards/sam3x-ek/examples/sam3x-ek_http_server/cfg/cfg_http.h
new file mode 100644
index 00000000..0aba5f02
--- /dev/null
+++ b/boards/sam3x-ek/examples/sam3x-ek_http_server/cfg/cfg_http.h
@@ -0,0 +1,64 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief Configuration file for the HTTP module.
+ *
+ * \author Daniele Basile <asterix@develer.com>
+ */
+
+#ifndef CFG_HTTP_H
+#define CFG_HTTP_H
+
+/**
+ * Module logging level.
+ *
+ * $WIZ$ type = "enum"
+ * $WIZ$ value_list = "log_level"
+ */
+#define HTTP_LOG_LEVEL      LOG_LVL_INFO
+
+/**
+ * Module logging format.
+ *
+ * $WIZ$ type = "enum"
+ * $WIZ$ value_list = "log_format"
+ */
+#define HTTP_LOG_FORMAT     LOG_FMT_VERBOSE
+
+/**
+ * Default start page to load
+ *
+ * $WIZ$ type = "str"
+ */
+#define HTTP_DEFAULT_PAGE      "index.htm"
+
+#endif /* CFG_HTTP_H */
diff --git a/boards/sam3x-ek/hw/hw_http.c b/boards/sam3x-ek/hw/hw_http.c
new file mode 100644
index 00000000..7d9ba7b3
--- /dev/null
+++ b/boards/sam3x-ek/hw/hw_http.c
@@ -0,0 +1,56 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Simple Http server error pages.
+ *
+ * \author Daniele Basile <asteix@develer.com>
+ */
+
+#include "hw_http.h"
+
+const char http_file_not_found[] = "\
+<!DOCTYPE html PUBLIC \"-//IETF//DTD HTML 2.0//EN\"> \
+<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=ISO-8859-1\"> \
+<title>404 Not Found</title></head><body><img src=\"bertos_logo_jpg.jpg\"><h1>404 Not Found</h1>\
+<p>The requested URL was not found on this server.</p><hr>\
+<address>BeRTOS simple HTTP server</address></body></html>";
+
+const size_t http_file_not_found_len = sizeof(http_file_not_found);
+
+const char http_sd_not_present[] = " \
+<!DOCTYPE html PUBLIC \"-//IETF//DTD HTML 2.0//EN\">  \
+<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=ISO-8859-1\">  \
+<title>BeRTOS simple HTTP Server</title></head><body><img src=\"bertos_logo_jpg.jpg\"> \
+<h1>BeRTOS simple HTTP Server</h1><p>Simple Http server, the site's pages are stored on SD card, check it if is present.</p><hr>\
+<a href=\"http://www.bertos.org\">www.BeRTOS.org</a></body></html> \
+";
+const size_t http_sd_not_present_len = sizeof(http_sd_not_present);
diff --git a/boards/sam3x-ek/hw/hw_http.h b/boards/sam3x-ek/hw/hw_http.h
new file mode 100644
index 00000000..88ec1bf7
--- /dev/null
+++ b/boards/sam3x-ek/hw/hw_http.h
@@ -0,0 +1,49 @@
+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2011 Develer S.r.l. (http://www.develer.com/)
+ * All Rights Reserved.
+ * -->
+ *
+ * \brief Simple Http server error pages.
+ *
+ * \author Daniele Basile <asteix@develer.com>
+ */
+
+#ifndef HW_HTTP_H
+#define HW_HTTP_H
+
+#include <cpu/types.h>
+
+extern const char http_file_not_found[];
+extern const size_t http_file_not_found_len;
+
+extern const char http_sd_not_present[];
+extern const size_t http_sd_not_present_len;
+
+#endif /*  HW_HTTP_H */
-- 
2.25.1