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Update 03

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xzx3344521
2025-11-05 23:26:35 +08:00
committed by GitHub
parent 7e9c91dd77
commit 781252a866
1 changed files with 105 additions and 29 deletions
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@@ -16,6 +16,15 @@ echo " 网络连接诊断工具 v2.0"
echo "================================================"
echo -e "${NC}"
# 函数：检查命令是否存在
check_command() {
if command -v "$1" &> /dev/null; then
return 0
else
return 1
fi
}
# 函数：显示帮助信息
show_help() {
echo -e "${YELLOW}使用说明：${NC}"
@@ -67,50 +76,73 @@ ping_test() {
if ping -c 4 -W 2 "$TARGET" &> /dev/null; then
echo -e "${GREEN}✓ Ping 测试成功 - 网络连通正常${NC}"
PING_RESULT=$(ping -c 4 -W 2 "$TARGET" | grep -E "packets transmitted|min/avg/max")
PING_RESULT=$(ping -c 4 -W 2 "$TARGET" | grep -E "packets transmitted|min/avg/max" 2>/dev/null || echo "Ping 成功但无法解析详细结果")
echo "$PING_RESULT"
return 0
else
echo -e "${RED}✗ Ping 测试失败 - 网络不通${NC}"
return 1
fi
}
# 函数：端口扫描测试
port_scan_test() {
# 函数：TCP连接测试（主要测试方法）
tcp_connection_test() {
local port=$1
echo -e "\n${PURPLE}=== 端口 $port 测试 ===${NC}"
# 测试1: nc 命令
echo -e "${CYAN}[测试1] NC 端口扫描...${NC}"
if command -v nc &> /dev/null; then
# 测试1: TCP 连接测试（主要方法）
echo -e "${CYAN}[测试1] TCP 连接测试...${NC}"
if timeout 3 bash -c "echo > /dev/tcp/$TARGET/$port" 2>/dev/null; then
echo -e "${GREEN}✓ TCP 测试 - 端口 $port 开放${NC}"
TCP_RESULT=0
else
echo -e "${RED}✗ TCP 测试 - 端口 $port 关闭或无法连接${NC}"
TCP_RESULT=1
fi
# 测试2: 使用 curl 测试 HTTP/HTTPS 端口（如果适用）
if [[ $port -eq 80 || $port -eq 443 || $port -eq 8080 || $port -eq 8443 ]]; then
echo -e "${CYAN}[测试2] HTTP/HTTPS 服务检测...${NC}"
if check_command curl; then
local protocol="http"
if [[ $port -eq 443 || $port -eq 8443 ]]; then
protocol="https"
fi
if timeout 5 curl -s -I "${protocol}://${TARGET}:${port}" &> /dev/null; then
echo -e "${GREEN}✓ HTTP/HTTPS 服务在端口 $port 运行正常${NC}"
else
echo -e "${YELLOW}⚠ 端口 $port 可能不是 HTTP/HTTPS 服务或服务无响应${NC}"
fi
else
echo -e "${YELLOW}⚠ curl 命令未安装，跳过HTTP测试${NC}"
fi
fi
# 测试3: 使用 nc 如果可用
if check_command nc; then
echo -e "${CYAN}[测试3] NC 端口扫描...${NC}"
if nc -zv -w 3 "$TARGET" "$port" &> /dev/null; then
echo -e "${GREEN}✓ NC 测试 - 端口 $port 开放${NC}"
else
echo -e "${RED}✗ NC 测试 - 端口 $port 关闭或无法连接${NC}"
echo -e "${RED}✗ NC 测试 - 端口 $port 关闭${NC}"
fi
else
echo -e "${YELLOW}⚠ NC 命令未安装，跳过此测试${NC}"
echo -e "${YELLOW}⚠ NC 命令未安装，跳过NC测试${NC}"
fi
# 测试2: TCP 连接测试
echo -e "${CYAN}[测试2] TCP 连接测试...${NC}"
if timeout 3 bash -c "echo > /dev/tcp/$TARGET/$port" 2>/dev/null; then
echo -e "${GREEN}✓ TCP 测试 - 端口 $port 可连接${NC}"
else
echo -e "${RED}✗ TCP 测试 - 端口 $port 无法连接${NC}"
fi
# 测试3: telnet 测试（如果可用）
echo -e "${CYAN}[测试3] Telnet 测试...${NC}"
if command -v telnet &> /dev/null; then
# 测试4: 使用 telnet 如果可用
if check_command telnet; then
echo -e "${CYAN}[测试4] Telnet 测试...${NC}"
if timeout 3 telnet "$TARGET" "$port" 2>&1 | grep -q "Connected"; then
echo -e "${GREEN}✓ Telnet 测试 - 端口 $port 可连接${NC}"
else
echo -e "${RED}✗ Telnet 测试 - 端口 $port 无法连接${NC}"
fi
else
echo -e "${YELLOW}⚠ Telnet 命令未安装，跳过此测试${NC}"
echo -e "${YELLOW}⚠ Telnet 命令未安装，跳过Telnet测试${NC}"
fi
return $TCP_RESULT
}
# 函数：DNS解析测试
@@ -118,12 +150,23 @@ dns_test() {
echo -e "\n${PURPLE}=== DNS 解析测试 ===${NC}"
if [[ "$TARGET" =~ ^[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$ ]]; then
echo -e "${CYAN}检测到域名，进行DNS解析...${NC}"
if check_command nslookup; then
if nslookup "$TARGET" &> /dev/null; then
echo -e "${GREEN}✓ DNS 解析成功${NC}"
nslookup "$TARGET" | grep -A 10 "Name:"
nslookup "$TARGET" | grep -A 10 "Name:" | head -10
else
echo -e "${RED}✗ DNS 解析失败${NC}"
fi
elif check_command dig; then
if dig "$TARGET" +short &> /dev/null; then
echo -e "${GREEN}✓ DNS 解析成功${NC}"
dig "$TARGET" +short
else
echo -e "${RED}✗ DNS 解析失败${NC}"
fi
else
echo -e "${YELLOW}⚠ DNS 查询工具未安装，跳过DNS测试${NC}"
fi
else
echo -e "${CYAN}检测到IP地址，跳过DNS解析测试${NC}"
fi
@@ -136,10 +179,10 @@ trace_route() {
read -p "选择: " DO_TRACE
if [[ "$DO_TRACE" == "y" || "$DO_TRACE" == "Y" ]]; then
if command -v traceroute &> /dev/null; then
if check_command traceroute; then
echo -e "${CYAN}开始路由跟踪...${NC}"
traceroute -m 15 "$TARGET"
elif command -v tracepath &> /dev/null; then
elif check_command tracepath; then
echo -e "${CYAN}开始路由跟踪 (使用 tracepath)...${NC}"
tracepath "$TARGET"
else
@@ -171,6 +214,27 @@ generate_report() {
echo -e " 端口 $port: ${RED}关闭${NC}"
fi
done
# 给出建议
echo -e "\n${CYAN}建议:${NC}"
local all_ports_closed=true
for port in "${PORTS[@]}"; do
if timeout 2 bash -c "echo > /dev/tcp/$TARGET/$port" 2>/dev/null; then
all_ports_closed=false
break
fi
done
if ! ping -c 1 -W 2 "$TARGET" &> /dev/null; then
echo -e "${RED}● 目标主机无法访问，请检查网络连接或目标地址${NC}"
elif [ "$all_ports_closed" = true ]; then
echo -e "${YELLOW}● 所有测试端口均关闭，可能的原因：${NC}"
echo -e " - 目标服务未运行"
echo -e " - 防火墙阻止了连接"
echo -e " - 目标主机拒绝了连接"
else
echo -e "${GREEN}● 网络连接正常，部分端口可访问${NC}"
fi
}
# 主函数
@@ -205,7 +269,7 @@ main() {
# 端口测试
for port in "${PORTS[@]}"; do
port_scan_test "$port"
tcp_connection_test "$port"
done
# 路由跟踪
@@ -217,11 +281,12 @@ main() {
echo -e "\n${GREEN}网络诊断完成！${NC}"
}
# 检查必要命令
# 检查必要命令（简化版）
check_requirements() {
local missing=()
for cmd in ping nc timeout; do
# 只检查最基础的命令
for cmd in ping timeout; do
if ! command -v "$cmd" &> /dev/null; then
missing+=("$cmd")
fi
@@ -232,6 +297,17 @@ check_requirements() {
echo -e "${YELLOW}请安装缺少的命令后重新运行脚本${NC}"
exit 1
fi
# 检查可选命令并提示
echo -e "${CYAN}检测可选工具...${NC}"
for cmd in nc telnet curl nslookup dig traceroute tracepath; do
if ! command -v "$cmd" &> /dev/null; then
echo -e "${YELLOW}⚠ 可选工具 '$cmd' 未安装，相关测试将跳过${NC}"
else
echo -e "${GREEN}✓ 工具 '$cmd' 可用${NC}"
fi
done
echo ""
}
# 脚本入口