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resolver: Add support for CNAME

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Also rework resolver's send format and convert test-tcp and nslookup to
use getaddrinfo
This commit is contained in:
Bananymous
2025-04-22 08:05:14 +03:00
parent f8e3ae0525
commit 33a0f562d3
5 changed files with 264 additions and 124 deletions
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10
userspace/libraries/LibC/netdb.cpp
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@@ -107,7 +107,7 @@ int getaddrinfo(const char* __restrict nodename, const char* __restrict servname
goto error_close_socket;
sockaddr_storage storage;
if (recv(resolver_sock, &storage, sizeof(storage), 0) == -1)
if (recv(resolver_sock, &storage, sizeof(storage), 0) < static_cast<ssize_t>(sizeof(sockaddr_in)))
goto error_close_socket;
close(resolver_sock);
@@ -115,12 +115,12 @@ int getaddrinfo(const char* __restrict nodename, const char* __restrict servname
if (storage.ss_family != AF_INET)
return EAI_FAIL;
ipv4_addr = *reinterpret_cast<in_addr_t*>(storage.ss_storage);
ipv4_addr = reinterpret_cast<sockaddr_in&>(storage).sin_addr.s_addr;
}
{
addrinfo* ai = (addrinfo*)malloc(sizeof(addrinfo) + sizeof(sockaddr_in));
if (*res == nullptr)
if (ai == nullptr)
return EAI_MEMORY;
sockaddr_in* sa_in = reinterpret_cast<sockaddr_in*>(reinterpret_cast<uintptr_t>(ai) + sizeof(addrinfo));
@@ -193,7 +193,7 @@ struct hostent* gethostbyname(const char* name)
goto error_close_socket;
sockaddr_storage storage;
if (recv(socket, &storage, sizeof(storage), 0) == -1)
if (recv(socket, &storage, sizeof(storage), 0) < static_cast<ssize_t>(sizeof(sockaddr_in)))
goto error_close_socket;
close(socket);
@@ -201,7 +201,7 @@ struct hostent* gethostbyname(const char* name)
if (storage.ss_family != AF_INET)
return nullptr;
addr_buffer = *reinterpret_cast<in_addr_t*>(storage.ss_storage);
addr_buffer = reinterpret_cast<sockaddr_in&>(storage).sin_addr.s_addr;
}
return &hostent;