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67 lines
2.1 KiB
67 lines
2.1 KiB
import ipaddress
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import re
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'''
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正则管理类，用来实现对各类字符串进行合法性校验
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'''
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class ReManager():
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def is_valid_ip(self,ip):
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try:
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ipaddress.ip_address(ip)
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return True
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except ValueError:
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return False
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def is_valid_subnet_mask(self,subnet_mask):
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# 将子网掩码字符串转换为整数列表
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bits = [int(b) for b in subnet_mask.split('.')]
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if len(bits) != 4:
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return False
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# 检查每个部分是否在0-255范围内
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if not all(0 <= b <= 255 for b in bits):
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return False
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# 检查子网掩码是否连续为1后跟连续为0
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mask_int = (bits[0] << 24) + (bits[1] << 16) + (bits[2] << 8) + bits[3]
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binary_mask = bin(mask_int)[2:].zfill(32)
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ones_count = binary_mask.count('1')
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if not all(bit == '1' for bit in binary_mask[:ones_count]) or not all(
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bit == '0' for bit in binary_mask[ones_count:]):
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return False
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return True
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def is_valid_port(self,port):
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try:
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port = int(port) # 尝试将端口转换为整数
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if 1 <= port <= 65535: # 检查端口号是否在合法范围内
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return True
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else:
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return False
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except ValueError:
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# 如果端口不是整数，返回False
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return False
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def is_valid_rtsp_url(self,url):
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pattern = re.compile(
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r'^(rtsp:\/\/)' # Start with rtsp://
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r'(?P<host>(?:[a-zA-Z0-9_\-\.]+)|(?:\[[a-fA-F0-9:]+\]))' # Hostname or IPv4/IPv6 address
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r'(?::(?P<port>\d+))?' # Optional port number
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r'(?P<path>\/[a-zA-Z0-9_\-\.\/]*)?$' # Optional path
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)
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match = pattern.match(url)
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return match is not None
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mReM = ReManager()
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if __name__ == "__main__":
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urls = [
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"rtsp://192.168.1.1:554/stream1",
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"rtsp://example.com/stream",
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"rtsp://[2001:db8::1]:554/stream",
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"rtsp://localhost",
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"http://example.com",
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"ftp://example.com/stream"
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]
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for url in urls:
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print(f"{url}: {mReM.is_valid_rtsp_url(url)}")
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