mirror of
https://github.com/farion1231/cc-switch.git
synced 2026-05-27 16:40:28 +08:00
fix(usage): remove unnecessary private IP restrictions from usage script
SSRF protection (private IP blocking, suspicious hostname detection) was originally added for web-server threat models but is unnecessary for a local desktop app where the user already has full network access. This removal unblocks legitimate use cases like enterprise intranet APIs, Docker container addresses, and self-hosted services. Retained: HTTPS enforcement and same-origin checks which still provide meaningful security (protecting API keys in transit and preventing scripts from leaking keys to unrelated domains).
This commit is contained in:
@@ -104,8 +104,7 @@ pub async fn execute_usage_script(
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)
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})?;
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// 5. 验证请求 URL 是否安全(防止 SSRF)
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// 如果提供了 base_url,则验证同源;否则只做基本安全检查
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// 5. 验证请求 URL(HTTPS 强制 + 同源检查)
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validate_request_url(&request.url, base_url, is_custom_template)?;
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// 6. 发送 HTTP 请求
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@@ -468,19 +467,10 @@ fn validate_base_url(base_url: &str) -> Result<(), AppError> {
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));
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}
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// 检查是否为明显的私有IP(但在 base_url 阶段不过于严格,主要在 request_url 阶段检查)
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if is_suspicious_hostname(hostname) {
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return Err(AppError::localized(
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"usage_script.base_url_suspicious",
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"base_url 包含可疑的主机名",
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"base_url contains a suspicious hostname",
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));
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}
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Ok(())
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}
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/// 验证请求 URL 是否安全(防止 SSRF)
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/// 验证请求 URL 是否安全(HTTPS 强制 + 同源检查)
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fn validate_request_url(
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request_url: &str,
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base_url: &str,
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@@ -561,151 +551,11 @@ fn validate_request_url(
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));
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}
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}
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// 禁止私有 IP 地址访问(除非 base_url 本身就是私有地址,用于开发环境)
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if let Some(host) = parsed_request.host_str() {
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let base_host = parsed_base.host_str().unwrap_or("");
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// 如果 base_url 不是私有地址,则禁止访问私有IP
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if !is_private_ip(base_host) && is_private_ip(host) {
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return Err(AppError::localized(
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"usage_script.private_ip_blocked",
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"禁止访问私有 IP 地址",
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"Access to private IP addresses is blocked",
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));
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}
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}
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} else {
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// 自定义模板模式:没有 base_url,需要额外的安全检查
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// 禁止访问私有 IP 地址(SSRF 防护)
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if let Some(host) = parsed_request.host_str() {
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if is_private_ip(host) && !is_request_loopback {
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return Err(AppError::localized(
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"usage_script.private_ip_blocked",
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"禁止访问私有 IP 地址(localhost 除外)",
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"Access to private IP addresses is blocked (localhost allowed)",
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));
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}
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}
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}
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Ok(())
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}
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/// 检查是否为私有 IP 地址
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fn is_private_ip(host: &str) -> bool {
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// localhost 检查
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if host.eq_ignore_ascii_case("localhost") {
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return true;
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}
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// 尝试解析为IP地址
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if let Ok(ip_addr) = host.parse::<std::net::IpAddr>() {
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return is_private_ip_addr(ip_addr);
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}
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// 如果不是IP地址,不是私有IP
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false
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}
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/// 使用标准库API检查IP地址是否为私有地址
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fn is_private_ip_addr(ip: std::net::IpAddr) -> bool {
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match ip {
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std::net::IpAddr::V4(ipv4) => {
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let octets = ipv4.octets();
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// 0.0.0.0/8 (包括未指定地址)
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if octets[0] == 0 {
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return true;
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}
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// RFC1918 私有地址范围
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// 10.0.0.0/8
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if octets[0] == 10 {
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return true;
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}
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// 172.16.0.0/12 (172.16.0.0 - 172.31.255.255)
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if octets[0] == 172 && octets[1] >= 16 && octets[1] <= 31 {
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return true;
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}
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// 192.168.0.0/16
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if octets[0] == 192 && octets[1] == 168 {
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return true;
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}
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// 其他特殊地址
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// 169.254.0.0/16 (链路本地地址)
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if octets[0] == 169 && octets[1] == 254 {
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return true;
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}
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// 127.0.0.0/8 (环回地址)
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if octets[0] == 127 {
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return true;
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}
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false
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}
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std::net::IpAddr::V6(ipv6) => {
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// IPv6 私有地址检查 - 使用标准库方法
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// ::1 (环回地址)
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if ipv6.is_loopback() {
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return true;
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}
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// 唯一本地地址 (fc00::/7)
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// Rust 1.70+ 可以使用 ipv6.is_unique_local()
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// 但为了兼容性,我们手动检查
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let first_segment = ipv6.segments()[0];
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if (first_segment & 0xfe00) == 0xfc00 {
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return true;
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}
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// 链路本地地址 (fe80::/10)
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if (first_segment & 0xffc0) == 0xfe80 {
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return true;
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}
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// 未指定地址 ::
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if ipv6.is_unspecified() {
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return true;
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}
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false
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}
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}
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}
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/// 检查是否为可疑的主机名(只检查明显不安全的模式)
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fn is_suspicious_hostname(hostname: &str) -> bool {
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// 空主机名
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if hostname.is_empty() {
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return true;
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}
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// 检查明显的主机名格式问题
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if hostname.contains("..") || hostname.starts_with(".") || hostname.ends_with(".") {
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return true;
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}
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// 检查是否为纯IP地址但没有合理格式(过于宽松的检查在这里可能不够,但主要依赖后续的同源检查)
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if hostname.parse::<std::net::IpAddr>().is_ok() {
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// IP地址格式的,在这里不直接拒绝,让同源检查来处理
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return false;
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}
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// 检查是否包含明显不当的字符
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let suspicious_chars = ['<', '>', '"', '\'', '\n', '\r', '\t', '\0'];
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if hostname.chars().any(|c| suspicious_chars.contains(&c)) {
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return true;
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}
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false
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}
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/// 判断 URL 是否指向本机(localhost / loopback)
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fn is_loopback_host(url: &Url) -> bool {
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match url.host() {
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@@ -720,77 +570,6 @@ fn is_loopback_host(url: &Url) -> bool {
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mod tests {
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use super::*;
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#[test]
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fn test_private_ip_validation() {
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// 测试IPv4私网地址
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// RFC1918私网地址 - 应该返回true
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assert!(is_private_ip("10.0.0.1"));
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assert!(is_private_ip("10.255.255.254"));
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assert!(is_private_ip("172.16.0.1"));
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assert!(is_private_ip("172.31.255.255"));
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assert!(is_private_ip("192.168.0.1"));
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assert!(is_private_ip("192.168.255.255"));
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// 链路本地地址 - 应该返回true
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assert!(is_private_ip("169.254.0.1"));
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assert!(is_private_ip("169.254.255.255"));
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// 环回地址 - 应该返回true
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assert!(is_private_ip("127.0.0.1"));
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assert!(is_private_ip("localhost"));
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// 公网172.x.x.x地址 - 应该返回false(这是修复的重点)
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assert!(!is_private_ip("172.0.0.1"));
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assert!(!is_private_ip("172.15.255.255"));
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assert!(!is_private_ip("172.32.0.1"));
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assert!(!is_private_ip("172.64.0.1"));
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assert!(!is_private_ip("172.67.0.1")); // Cloudflare CDN
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assert!(!is_private_ip("172.68.0.1"));
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assert!(!is_private_ip("172.100.50.25"));
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assert!(!is_private_ip("172.255.255.255"));
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// 其他公网地址 - 应该返回false
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assert!(!is_private_ip("8.8.8.8")); // Google DNS
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assert!(!is_private_ip("1.1.1.1")); // Cloudflare DNS
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assert!(!is_private_ip("208.67.222.222")); // OpenDNS
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assert!(!is_private_ip("180.76.76.76")); // Baidu DNS
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// 域名 - 应该返回false
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assert!(!is_private_ip("api.example.com"));
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assert!(!is_private_ip("www.google.com"));
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}
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#[test]
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fn test_ipv6_private_validation() {
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// IPv6私网地址
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assert!(is_private_ip("::1")); // 环回地址
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assert!(is_private_ip("fc00::1")); // 唯一本地地址
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assert!(is_private_ip("fd00::1")); // 唯一本地地址
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assert!(is_private_ip("fe80::1")); // 链路本地地址
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assert!(is_private_ip("::")); // 未指定地址
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// IPv6公网地址 - 应该返回false(修复的重点)
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assert!(!is_private_ip("2001:4860:4860::8888")); // Google DNS IPv6
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assert!(!is_private_ip("2606:4700:4700::1111")); // Cloudflare DNS IPv6
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assert!(!is_private_ip("2404:6800:4001:c01::67")); // Google DNS IPv6 (其他格式)
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assert!(!is_private_ip("2001:db8::1")); // 文档地址(非私网)
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// 测试包含 ::1 子串但不是环回地址的公网地址
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assert!(!is_private_ip("2001:db8::1abc")); // 包含 ::1abc 但不是环回
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assert!(!is_private_ip("2606:4700::1")); // 包含 ::1 但不是环回
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}
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#[test]
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fn test_hostname_bypass_prevention() {
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// 看起来像本地,但实际是域名
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assert!(!is_private_ip("127.0.0.1.evil.com"));
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assert!(!is_private_ip("localhost.evil.com"));
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// 0.0.0.0 应该被视为本地/阻断
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assert!(is_private_ip("0.0.0.0"));
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}
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#[test]
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fn test_https_bypass_prevention() {
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// 非本地域名的 HTTP 应该被拒绝
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@@ -801,37 +580,6 @@ mod tests {
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);
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}
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#[test]
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fn test_edge_cases() {
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// 边界情况测试
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assert!(is_private_ip("172.16.0.0")); // RFC1918起始
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assert!(is_private_ip("172.31.255.255")); // RFC1918结束
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assert!(is_private_ip("10.0.0.0")); // 10.0.0.0/8起始
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assert!(is_private_ip("10.255.255.255")); // 10.0.0.0/8结束
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assert!(is_private_ip("192.168.0.0")); // 192.168.0.0/16起始
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assert!(is_private_ip("192.168.255.255")); // 192.168.0.0/16结束
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// 紧邻RFC1918的公网地址 - 应该返回false
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assert!(!is_private_ip("172.15.255.255")); // 172.16.0.0的前一个
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assert!(!is_private_ip("172.32.0.0")); // 172.31.255.255的后一个
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}
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#[test]
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fn test_ip_addr_parsing() {
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// 测试IP地址解析功能
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let ipv4_private = "10.0.0.1".parse::<std::net::IpAddr>().unwrap();
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assert!(is_private_ip_addr(ipv4_private));
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let ipv4_public = "172.67.0.1".parse::<std::net::IpAddr>().unwrap();
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assert!(!is_private_ip_addr(ipv4_public));
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let ipv6_private = "fc00::1".parse::<std::net::IpAddr>().unwrap();
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assert!(is_private_ip_addr(ipv6_private));
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let ipv6_public = "2001:4860:4860::8888".parse::<std::net::IpAddr>().unwrap();
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assert!(!is_private_ip_addr(ipv6_public));
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}
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#[test]
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fn test_port_comparison() {
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// 测试端口比较逻辑是否正确处理默认端口和显式端口
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