我在 ARM 环境中使用 lighttpd 版本 1.4.55。我创建了一个 HTML 页面，其中有一个用于下载一些 json 数据的按钮。该按钮触发一个调用 cgi 脚本的提交表单。该脚本必须获取表单的输出并写入文件。但是当我点击按钮时，xhr请求的响应文本是cgi脚本的内容而不是printf消息。 cgi具有执行权限。
我按以下方式划分文件夹：
•mnt/userfs/lighttpd/
•www
• /scripts_files
json.cgi
• /html_files
•css folder
•js folder
• upload_dir
• index.html
• /admin
• password_file
• main.html
• file_upload.html
• /user
• password_file
• main.html
• file_upload.html
•lighttpd.conf
•log
•error.log
调用表单的按钮如下：
<a href="/scripts_files/conf.json" download="data.json">
<input type="button" value="DOWNLOAD" onclick="submit_form();">
</a>
该按钮调用一个函数，然后下载使用 .cgi 脚本创建的文件。
ajax请求的功能：
function submit_form()
{
var div1 = document.getElementById("extern");
var data = {};
data = recursive_f(div1, 0, 0);
output = JSON.stringify(data);
var xhr_lv = new XMLHttpRequest();
xhr_lv.onreadystatechange=function()
xhr_lv.open("POST", "/scripts_files/json.cgi", true);
xhr_lv.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
xhr_lv.send(output);
}
生成.cgi脚本的C程序：
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(int argc, char* argv[])
{
char* post_len_v = getenv("CONTENT_LENGTH");
long post_len = strtol(post_len_v, NULL, 10);
char* post_msg = (char*)malloc(post_len + 1);
FILE *fp;
if (!post_msg)
{
return 0;
}
fgets(post_msg, post_len + 1, stdin);
fp = fopen("/mnt/userfs/lighttpd/www/scripts_files/conf.json", "w");
fprintf(fp, "%s", post_msg);
fclose(fp);
printf("Content-type: application/json\n\n");
return 0;
}
Lighttpd配置文件：
server.modules = (
"mod_indexfile",
"mod_access",
"mod_redirect",
"mod_alias",
"mod_compress",
"mod_dirlisting",
"mod_staticfile",
"mod_auth",
"mod_authn_file",
"mod_accesslog",
"mod_cgi",
#"mod_rewrite",
#"mod_status"
#"mod_fastcgi"
)
server.document-root = "/mnt/userfs/lighttpd/www"
server.errorlog = "/mnt/userfs/lighttpd/log/error.log"
server.breakagelog = "/mnt/userfs/lighttpd/log/breakage.log"
index-file.names = ("index.html", "main.html", "file_upload.html")
mimetype.assign = (
".class" => "application/java-vm",
".js" => "application/javascript",
".mjs" => "application/javascript",
".json" => "application/json",
".jsonld" => "application/ld+json",
".wmx" => "video/x-ms-wmx",
".wvx" => "video/x-ms-wvx",
".avi" => "video/x-msvideo",
".movie" => "video/x-sgi-movie",
".ice" => "x-conference/x-cooltalk",
".sisx" => "x-epoc/x-sisx-app",
".vrm" => "x-world/x-vrml",
"README" => "text/plain; charset=utf-8",
"Makefile" => "text/x-makefile; charset=utf-8",
# enable caching for unknown mime types:
#"" => "application/octet-stream"
)
mimetype.use-xattr = "disable"
url.access-deny = ( "~", ".inc" )
static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )
server.port = 80
server.username = "midac"
server.groupname = "midac"
#compress.cache-dir = "/var/cache/lighttpd/compress/"
compress.filetype = ( "application/javascript", "text/css", "text/html", "text/plain" )
cgi.assign = ( ".cgi" => "" )
$HTTP["url"] =~ "/admin" {
auth.backend = "htpasswd"
auth.backend.htpasswd.userfile = "/mnt/userfs/lighttpd/www/admin/.htpasswd"
auth.require = ( "/admin" => (
"method" => "basic",
"realm" => "main",
"require" => "valid-user")
)
}
$HTTP["url"] =~ "/user" {
auth.backend = "htpasswd"
auth.backend.htpasswd.userfile = "/mnt/userfs/lighttpd/www/user/.htpasswd"
auth.require = ( "/user" => (
"method" => "basic",
"realm" => "main",
"require" => "valid-user")
)
}
$HTTP["url"] =~ "/user2" {
auth.backend = "htpasswd"
auth.backend.htpasswd.userfile = "/mnt/userfs/lighttpd/www/user2/.htpasswd"
auth.require = ( "/user2" => (
"method" => "basic",
"realm" => "main",
"require" => "valid-user")
)
}
我也尝试了示例 cgi 脚本，但得到了这个结果：
#!/bin/sh
echo hello
所以cgi脚本的内容。
POST请求的类型是octet-stream，似乎cgi_mod无法正常工作，或者我错过了lighttpd的配置文件中的某些内容。
有什么建议么？