Hi3861 OpenHarmony嵌入式应用入门--HTTPD

2024-07-12 10:10:02
开发
18

httpd 是 Apache HTTP Server 的守护进程名称，Apache HTTP Server 是一种广泛使用的开源网页服务器软件。

本项目是从LwIP中抽取的HTTP服务器代码；

`Hi3861 SDK`中已经包含了一份预编译的lwip，但没有开启HTTP服务器功能（静态库无法修改）；

HTTP 服务器特性

目前已测试通过的功能有：

通过HTTP访问静态资源文件
通过cgi回调函数处理表单和页面跳转

静态资源文件：

本服务器实现不支持实际的服务端本地文件系统访问；
取而代之的是，一种简单的虚拟文件系统：
- \\third_party\httpd\src\http\fs.c 文件提供了一套文件系统接口，使用数组直接存储文件数据
- \\third_party\httpd\src\http\fsdata.c文件是由 makefsdata命令生成的虚拟文件系统元数据文件
- makefsdata 命令行工具，用于将一个目录下的静态资源文件转换为 fsdata.c文件

代码编写

修改D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\BUILD.gn文件

# Copyright (c) 2023 Beijing HuaQing YuanJian Education Technology Co., Ltd
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#    http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License. 

import("//build/lite/config/component/lite_component.gni")

lite_component("demo") {
  features = [
    #"base_00_helloworld:base_helloworld_example",
    #"base_01_led:base_led_example",
    #"base_02_loopkey:base_loopkey_example",
    #"base_03_irqkey:base_irqkey_example",
    #"base_04_adc:base_adc_example",
    #"base_05_pwm:base_pwm_example",
    #"base_06_ssd1306:base_ssd1306_example",
    #"kernel_01_task:kernel_task_example",
    #"kernel_02_timer:kernel_timer_example",
    #"kernel_03_event:kernel_event_example",
    #"kernel_04_mutex:kernel_mutex_example",
    #"kernel_05_semaphore_as_mutex:kernel_semaphore_as_mutex_example",
    #"kernel_06_semaphore_for_sync:kernel_semaphore_for_sync_example",
    #"kernel_07_semaphore_for_count:kernel_semaphore_for_count_example",
    #"kernel_08_message_queue:kernel_message_queue_example",
    #"wifi_09_hotspot:wifi_hotspot_example",
    #"wifi_10_sta:wifi_sta_example",
    #"tcp_11_server:tcp_server_example",
    #"tcp_12_client:tcp_client_example",
    #"udp_13_server:udp_server_example",
    #"udp_14_client:udp_client_example",
    #"network_15_mqtt:network_mqtt_example",
    #"network_16_sntp:network_sntp_example",
    "network_17_httpd:network_httpd_example",
  ]
}

创建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd文件夹

文件夹中创建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd\BUILD.gn文件

# Copyright (c) 2020, HiHope Community.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
#    list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its
#    contributors may be used to endorse or promote products derived from
#    this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

static_library("network_httpd_example") {
    sources = [
        "network_httpd_example.c",
        "wifi_connecter.c",


        "//third_party/httpd/src/core/altcp.c",
        "//third_party/httpd/src/core/altcp_tcp.c",
        "//third_party/httpd/src/http/fs.c",
        "//third_party/httpd/src/http/httpd.c",
        "//third_party/httpd/src/tcp_port.c",
        # "//third_party/httpd/src/pbuf_port.c",
    ]

    defines = [
        "LWIP_DEBUG",
        "HTTPD_DEBUG=0xA0",
        "LWIP_DBG_TYPES_ON=LWIP_DBG_ON",
        "LWIP_HTTPD_SSI"
    ]

    include_dirs = [
        "//third_party/httpd/include",
        "//third_party/httpd/include/lwip/apps",
        "//foundation/communication/wifi_lite/interfaces/wifiservice",
        "//vendor/hisi/hi3861/hi3861/third_party/lwip_sack/include/",
    ]
}

文件夹中创建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd\wifi_connecter.h文件，该头文件包含wifi连接的宏。文件同network_16_sntp\wifi_connecter.h

文件夹中创建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd\wifi_connecter.c文件，文件同network_16_sntp\wifi_connecter.c

文件夹中创建D:\DevEcoProjects\test\src\vendor\rtplay\rt_hi3861\demo\network_17_httpd\network_httpd_example.c文件

/*
 * Copyright (c) 2020, HiHope Community.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include "ohos_init.h"
#include "cmsis_os2.h"
// #include "wifiiot_at.h"

#include "httpd.h"
#include "wifi_connecter.h"

static int g_netId = -1;
#define STACK_SIZE  (4096)

#ifdef LWIP_HTTPD_CGI
const char *HelloHandler(int iIndex, int nParams, char *pcParam[], char *pcValue[])
{
    printf("HelloHandler\r\n");
    printf("iIndex = %d\r\n", iIndex);
    for (int i = 0; i < nParams; i++) {
        printf("pcParam[%d] = '%s'\r\n", i, pcParam[i]);
        printf("pcValue[%d] = '%s'\r\n", i, pcValue[i]);
    }
    return "/index.html"; // forward to home page.
}

static tCGI g_cgiHandlers[] = {
    { "/hello", HelloHandler },
};
#endif

#if LWIP_HTTPD_SSI
u16_t FooSsiHandler(
#if LWIP_HTTPD_SSI_RAW
    const char* tag,
#else /* LWIP_HTTPD_SSI_RAW */
    int tag,
#endif /* LWIP_HTTPD_SSI_RAW */
    char *pcInsert, int iInsertLen
#if LWIP_HTTPD_SSI_MULTIPART
    , u16_t currentTagPart, u16_t *nextTagPart
#endif /* LWIP_HTTPD_SSI_MULTIPART */
#if defined(LWIP_HTTPD_FILE_STATE) && LWIP_HTTPD_FILE_STATE
    , void *connectionState
#endif /* LWIP_HTTPD_FILE_STATE */
)
{
    printf("FooSsiHandler\r\n");

#if LWIP_HTTPD_SSI_RAW
    printf("tag = %s\r\n", tag);
#else
    printf("tag = %d\r\n", tag);
#endif
    printf("insertLen = %d\r\n", iInsertLen);
    printf("insertText = %s\r\n", pcInsert);
    return 0;
}
#endif

static void HttpdTask(void)
{
    WifiDeviceConfig config = {0};

    // 准备AP的配置参数
    // strcpy(config.ssid, PARAM_HOTSPOT_SSID);
    // strcpy(config.preSharedKey, PARAM_HOTSPOT_PSK);
    strcpy_s(config.ssid, WIFI_MAX_SSID_LEN, PARAM_HOTSPOT_SSID);
    strcpy_s(config.preSharedKey, WIFI_MAX_KEY_LEN, PARAM_HOTSPOT_PSK);
    config.securityType = PARAM_HOTSPOT_TYPE;

    g_netId = ConnectToHotspot(&config);
    printf("netId = %d\r\n", g_netId);

#ifdef LWIP_HTTPD_CGI
    http_set_cgi_handlers(g_cgiHandlers, LWIP_ARRAYSIZE(g_cgiHandlers));
#endif

#ifdef LWIP_HTTPD_SSI
    http_set_ssi_handler(FooSsiHandler, NULL, 0);
#endif

    httpd_init();
}

static void HttpdEntry(void)
{
    osThreadAttr_t attr = {0};

    attr.name = "HttpdTask";
    attr.stack_size = STACK_SIZE;
    attr.priority = osPriorityNormal;

    if (osThreadNew(HttpdTask, NULL, &attr) == NULL) {
        printf("[HttpdEntry] create HttpdTask failed!\n");
    }
}
SYS_RUN(HttpdEntry);

使用build，编译成功后，使用upload进行烧录。

访问网页

串口输出

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阅读全部

Hi3861 OpenHarmony嵌入式应用入门--HTTPD

HTTP 服务器特性

目前已测试通过的功能有：

静态资源文件：

代码编写

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