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When a SOCKS5 client sends a RESOLVE_PTR request, it must include either an IPv4 or IPv6 address. In the past this was required to be a binary address (address types 1 or 4), but since the refactoring of SOCKS5 support in Tor 0.3.5.1-alpha, strings (address type 3) are also allowed if they represent an IPv4 or IPv6 literal. However, when a binary IPv6 address is provided, parse_socks5_client_request converts it into a string enclosed in brackets. This doesn't match what string_is_valid_ipv6_address expects, so this would fail with the error "socks5 received RESOLVE_PTR command with hostname type. Rejecting." By replacing string_is_valid_ipv4_address/string_is_valid_ipv6_address with tor_addr_parse, we accept strings both with and without brackets. This fixes the handling of binary addresses, and also improves symmetry with CONNECT and RESOLVE requests. Fixes bug 32315. |
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include.am |