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WebNet_XiUOS/module/wn_module_asp.c

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/*
* File : wn_module_asp.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2018, RT-Thread Development Team
*
* This software is dual-licensed: 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. For the terms of this
* license, see <http://www.gnu.org/licenses/>.
*
* You are free to use this software under the terms of the GNU General
* Public License, 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.
*
* Alternatively for commercial application, you can contact us
* by email <business@rt-thread.com> for commercial license.
*
* Change Logs:
* Date Author Notes
* 2022-05-09 chunyexixiaoyu the version transplanted from rt-thread
*/
#include<transform.h>
#include <string.h>
#include <webnet.h>
#include <wn_module.h>
#include <wn_utils.h>
#ifdef WEBNET_USING_ASP
struct webnet_asp_variable
{
char* name;
void (*handler)(struct webnet_session* session);
};
static struct webnet_asp_variable* _webnet_asp_vars = NULL;
int32 _webnet_asp_vars_count = 0;
void webnet_asp_add_var(const char* name, void (*handler)(struct webnet_session* session))
{
if (_webnet_asp_vars == NULL)
{
_webnet_asp_vars_count = 1;
_webnet_asp_vars = (struct webnet_asp_variable*)wn_malloc (sizeof(struct webnet_asp_variable) *
_webnet_asp_vars_count);
}
else
{
_webnet_asp_vars_count += 1;
_webnet_asp_vars = (struct webnet_asp_variable*) wn_realloc (_webnet_asp_vars, sizeof(struct webnet_asp_variable) *
_webnet_asp_vars_count);
}
assert(_webnet_asp_vars != NULL);
_webnet_asp_vars[_webnet_asp_vars_count - 1].name = wn_strdup(name);
_webnet_asp_vars[_webnet_asp_vars_count - 1].handler = handler;
}
static void _default_asp_handler(struct webnet_session* session, const char* name)
{
if (strncmp(name, "VERION", 6) == 0)
{
webnet_session_printf(session, "WebNet 1.0.0");
}
else if (strncmp(name, "REMOTE_ADDR", 11) == 0)
{
webnet_session_printf(session, "%s", inet_ntoa(session->cliaddr.sin_addr));
}
else if (strncmp(name, "REMOTE_PORT", 11) == 0)
{
webnet_session_printf(session, "%d", ntohs(session->cliaddr.sin_port));
}
else if (strncmp(name, "SERVER_PORT", 11) == 0)
{
webnet_session_printf(session, "%d", WEBNET_PORT);
}
else if (strncmp(name, "DOCUMENT_ROOT", 13) == 0)
{
webnet_session_printf(session, "%s", webnet_get_root());
}
else if (strncmp(name, "SERVER", 6) == 0)
{
webnet_session_printf(session, "RT-Thread/WebNet");
}
else if (strncmp(name, "HOST", 4) == 0)
{
webnet_session_printf(session, "WebNet");
}
else if (strncmp(name, "DATE", 4) == 0)
{
webnet_session_printf(session, "2011/08/01");
}
else if (strncmp(name, "USER_AGENT", 10) == 0)
{
webnet_session_printf(session, "%s", session->request->user_agent);
}
else if (strncmp(name, "COOKIE", 6) == 0)
{
webnet_session_printf(session, "%s", session->request->cookie);
}
else if (strncmp(name, "MEMUSAGE", 8) == 0)
{
int32 total, used, max_used;
total = 1024*32;
used = 1024*16;
max_used = 1024*24;
webnet_session_printf(session, "current %d/maximal used %d/total %d", used, max_used, total);
}
else if (strncmp(name, "TICK", 4) == 0)
{
int32 tick;
int32 hour, min, second;
#ifdef ADD_RTTHREAD_FETURES
tick = rt_tick_get()/RT_TICK_PER_SECOND;
#endif
second = tick % 60;
min = (tick/60) % 60;
hour = tick / (60 * 60);
webnet_session_printf(session, "%02d:%02d:%02d", hour, min, second);
}
}
static void _webnet_asp_dofile(struct webnet_session* session, int fd)
{
char *asp_begin, *asp_end;
char *offset, *end;
char *buffer;
int32 length, index;
/* get file length */
length = lseek(fd, 0, SEEK_END);
lseek(fd, 0, SEEK_SET);
/* allocate read buffer */
buffer = (char*) wn_malloc (length);
if (buffer == NULL)
{
session->request->result_code = 500;
return;
}
/* write page header */
webnet_session_set_header(session, "text/html", 200, "OK", -1);
/* read file to buffer */
if (read(fd, buffer, (uint32)length) != length) /* read failed */
{
wn_free(buffer);
session->request->result_code = 500;
return;
}
offset = buffer;
end = buffer + length;
while (offset < end)
{
/* get beginning of asp variable */
asp_begin = strstr(offset, "<%");
if (asp_begin == NULL)
{
/* write content directly */
webnet_session_write(session, (const uint8*)offset, end - offset);
break;
}
/* get end of aps variable */
asp_end = strstr(asp_begin, "%>");
if (asp_end == NULL)
{
/* write content directly */
webnet_session_write(session, (const uint8*)offset, end - offset);
break;
}
else
{
/* write content */
webnet_session_write(session, (const uint8*)offset, asp_begin - offset);
offset = asp_begin + 2;
while ((*offset == ' ') || (*offset == '\t')) offset ++;
/* extrace asp variable */
for (index = 0; index < _webnet_asp_vars_count; index ++)
{
if (str_begin_with(offset, _webnet_asp_vars[index].name))
{
/* found asp variable */
_webnet_asp_vars[index].handler(session);
break;
}
}
if (index == _webnet_asp_vars_count)
{
/* use default handler */
_default_asp_handler(session, offset);
}
/* move to the end of asp varaialbe */
offset = asp_end + 2;
}
}
/* release read buffer */
wn_free(buffer);
}
int webnet_module_asp(struct webnet_session* session, int event)
{
struct webnet_request* request;
assert(session != NULL);
request = session->request;
assert(request != NULL);
if (event == WEBNET_EVENT_URI_POST)
{
int fd;
/* check whether a asp file */
if ((strstr(request->path, ".asp") != NULL) ||
(strstr(request->path, ".ASP") != NULL))
{
/* try to open this file */
fd = open(request->path, O_RDONLY, 0);
if ( fd >= 0)
{
_webnet_asp_dofile(session, fd);
close(fd);
return WEBNET_MODULE_FINISHED;
}
else
{
/* no this file */
request->result_code = 404;
return WEBNET_MODULE_FINISHED;
}
}
else
{
/* try index.asp */
char *asp_filename;
asp_filename = (char*) wn_malloc (WEBNET_PATH_MAX);
if (asp_filename != NULL)
{
snprintf(asp_filename, WEBNET_PATH_MAX, "%s/index.asp", request->path);
fd = open(asp_filename, O_RDONLY, 0);
if (fd >= 0)
{
wn_free(asp_filename);
_webnet_asp_dofile(session, fd);
close(fd);
return WEBNET_MODULE_FINISHED;
}
}
wn_free(asp_filename);
}
}
return WEBNET_MODULE_CONTINUE;
}
#endif /* WEBNET_USING_ASP */
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