Milestone 5: deliver embedded RDP sessions and lifecycle hardening
This commit is contained in:
Keith Smith
372
third_party/FreeRDP/winpr/libwinpr/sysinfo/test/TestGetComputerName.c
vendored
Normal file
372
third_party/FreeRDP/winpr/libwinpr/sysinfo/test/TestGetComputerName.c
vendored
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#include <stdio.h>
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#include <string.h>
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#include <winpr/wtypes.h>
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#include <winpr/sysinfo.h>
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#include <winpr/error.h>
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static BOOL Test_GetComputerName(void)
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{
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/**
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* BOOL WINAPI GetComputerName(LPTSTR lpBuffer, LPDWORD lpnSize);
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*
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* GetComputerName retrieves the NetBIOS name of the local computer.
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*
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* lpBuffer [out]
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* A pointer to a buffer that receives the computer name or the cluster virtual server name.
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* The buffer size should be large enough to contain MAX_COMPUTERNAME_LENGTH + 1 characters.
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*
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* lpnSize [in, out]
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* On input, specifies the size of the buffer, in TCHARs.
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* On output, the number of TCHARs copied to the destination buffer, not including the
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* terminating null character. If the buffer is too small, the function fails and GetLastError
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* returns ERROR_BUFFER_OVERFLOW. The lpnSize parameter specifies the size of the buffer
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* required, including the terminating null character
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*
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*/
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CHAR netbiosName1[MAX_COMPUTERNAME_LENGTH + 1] = WINPR_C_ARRAY_INIT;
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CHAR netbiosName2[MAX_COMPUTERNAME_LENGTH + 1] = WINPR_C_ARRAY_INIT;
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const size_t netbiosBufferSize = ARRAYSIZE(netbiosName1);
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DWORD dwSize = 0;
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DWORD dwNameLength = 0;
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DWORD dwError = 0;
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memset(netbiosName1, 0xAA, netbiosBufferSize);
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memset(netbiosName2, 0xBB, netbiosBufferSize);
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/* test with null buffer and zero size (required if buffer is null) */
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dwSize = 0;
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if (GetComputerNameA(nullptr, &dwSize) == TRUE)
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{
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(void)fprintf(stderr, "%s: (1) GetComputerNameA unexpectedly succeeded with null buffer\n",
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__func__);
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return FALSE;
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}
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if ((dwError = GetLastError()) != ERROR_BUFFER_OVERFLOW)
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{
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(void)fprintf(stderr,
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"%s: (2) GetLastError returned 0x%08" PRIX32
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" (expected ERROR_BUFFER_OVERFLOW)\n",
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__func__, dwError);
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return FALSE;
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}
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/* test with valid buffer and zero size */
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dwSize = 0;
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if (GetComputerNameA(netbiosName1, &dwSize) == TRUE)
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{
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(void)fprintf(stderr,
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"%s: (3) GetComputerNameA unexpectedly succeeded with zero size parameter\n",
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__func__);
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return FALSE;
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}
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if ((dwError = GetLastError()) != ERROR_BUFFER_OVERFLOW)
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{
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(void)fprintf(stderr,
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"%s: (4) GetLastError returned 0x%08" PRIX32
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" (expected ERROR_BUFFER_OVERFLOW)\n",
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__func__, dwError);
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return FALSE;
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}
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/* check if returned size is valid: must be the size of the buffer required, including the
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* terminating null character in this case */
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if (dwSize < 2 || dwSize > netbiosBufferSize)
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{
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(void)fprintf(stderr,
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"%s: (5) GetComputerNameA returned wrong size %" PRIu32
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" (expected something in the range from 2 to %" PRIuz ")\n",
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__func__, dwSize, netbiosBufferSize);
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return FALSE;
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}
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dwNameLength = dwSize - 1;
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/* test with returned size */
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if (GetComputerNameA(netbiosName1, &dwSize) == FALSE)
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{
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(void)fprintf(stderr, "%s: (6) GetComputerNameA failed with error: 0x%08" PRIX32 "\n",
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__func__, GetLastError());
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return FALSE;
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}
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/* check if returned size is valid */
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if (dwSize != dwNameLength)
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{
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(void)fprintf(stderr,
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"%s: (7) GetComputerNameA returned wrong size %" PRIu32 " (expected %" PRIu32
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")\n",
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__func__, dwSize, dwNameLength);
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return FALSE;
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}
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/* check if string is correctly terminated */
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if (netbiosName1[dwSize] != 0)
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{
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(void)fprintf(stderr, "%s: (8) string termination error\n", __func__);
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return FALSE;
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}
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/* test with real buffer size */
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dwSize = netbiosBufferSize;
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if (GetComputerNameA(netbiosName2, &dwSize) == FALSE)
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{
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(void)fprintf(stderr, "%s: (9) GetComputerNameA failed with error: 0x%08" PRIX32 "\n",
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__func__, GetLastError());
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return FALSE;
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}
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/* check if returned size is valid */
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if (dwSize != dwNameLength)
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{
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(void)fprintf(stderr,
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"%s: (10) GetComputerNameA returned wrong size %" PRIu32 " (expected %" PRIu32
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")\n",
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__func__, dwSize, dwNameLength);
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return FALSE;
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}
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/* check if string is correctly terminated */
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if (netbiosName2[dwSize] != 0)
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{
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(void)fprintf(stderr, "%s: (11) string termination error\n", __func__);
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return FALSE;
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}
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/* compare the results */
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if (strcmp(netbiosName1, netbiosName2) != 0)
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{
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(void)fprintf(stderr, "%s: (12) string compare mismatch\n", __func__);
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return FALSE;
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}
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/* test with off by one buffer size */
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dwSize = dwNameLength;
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if (GetComputerNameA(netbiosName1, &dwSize) == TRUE)
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{
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(void)fprintf(stderr,
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"%s: (13) GetComputerNameA unexpectedly succeeded with limited buffer size\n",
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__func__);
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return FALSE;
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}
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/* check if returned size is valid */
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if (dwSize != dwNameLength + 1)
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{
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(void)fprintf(stderr,
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"%s: (14) GetComputerNameA returned wrong size %" PRIu32 " (expected %" PRIu32
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")\n",
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__func__, dwSize, dwNameLength + 1);
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return FALSE;
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}
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return TRUE;
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}
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static BOOL Test_GetComputerNameEx_Format(COMPUTER_NAME_FORMAT format)
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{
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/**
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* BOOL WINAPI GetComputerNameEx(COMPUTER_NAME_FORMAT NameType, LPTSTR lpBuffer, LPDWORD
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* lpnSize);
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*
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* Retrieves a NetBIOS or DNS name associated with the local computer.
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*
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* NameType [in]
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* ComputerNameNetBIOS
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* ComputerNameDnsHostname
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* ComputerNameDnsDomain
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* ComputerNameDnsFullyQualified
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* ComputerNamePhysicalNetBIOS
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* ComputerNamePhysicalDnsHostname
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* ComputerNamePhysicalDnsDomain
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* ComputerNamePhysicalDnsFullyQualified
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*
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* lpBuffer [out]
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* A pointer to a buffer that receives the computer name or the cluster virtual server name.
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* The length of the name may be greater than MAX_COMPUTERNAME_LENGTH characters because DNS
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* allows longer names. To ensure that this buffer is large enough, set this parameter to
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* nullptr and use the required buffer size returned in the lpnSize parameter.
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*
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* lpnSize [in, out]
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* On input, specifies the size of the buffer, in TCHARs.
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* On output, receives the number of TCHARs copied to the destination buffer, not including the
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* terminating null character. If the buffer is too small, the function fails and GetLastError
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* returns ERROR_MORE_DATA. This parameter receives the size of the buffer required, including
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* the terminating null character. If lpBuffer is nullptr, this parameter must be zero.
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*
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*/
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CHAR computerName1[255 + 1];
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CHAR computerName2[255 + 1];
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const DWORD nameBufferSize = sizeof(computerName1) / sizeof(CHAR);
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DWORD dwSize = 0;
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DWORD dwMinSize = 0;
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DWORD dwNameLength = 0;
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DWORD dwError = 0;
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memset(computerName1, 0xAA, nameBufferSize);
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memset(computerName2, 0xBB, nameBufferSize);
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if (format == ComputerNameDnsDomain || format == ComputerNamePhysicalDnsDomain)
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{
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/* domain names may be empty, terminating null only */
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dwMinSize = 1;
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}
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else
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{
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/* computer names must be at least 1 character */
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dwMinSize = 2;
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}
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/* test with null buffer and zero size (required if buffer is null) */
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dwSize = 0;
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if (GetComputerNameExA(format, nullptr, &dwSize) == TRUE)
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{
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(void)fprintf(stderr,
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"%s: (1/%d) GetComputerNameExA unexpectedly succeeded with null buffer\n",
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__func__, format);
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return FALSE;
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}
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if ((dwError = GetLastError()) != ERROR_MORE_DATA)
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{
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(void)fprintf(
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stderr, "%s: (2/%d) GetLastError returned 0x%08" PRIX32 " (expected ERROR_MORE_DATA)\n",
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__func__, format, dwError);
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return FALSE;
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}
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/* test with valid buffer and zero size */
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dwSize = 0;
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if (GetComputerNameExA(format, computerName1, &dwSize) == TRUE)
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{
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(void)fprintf(
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stderr,
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"%s: (3/%d) GetComputerNameExA unexpectedly succeeded with zero size parameter\n",
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__func__, format);
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return FALSE;
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}
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if ((dwError = GetLastError()) != ERROR_MORE_DATA)
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{
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(void)fprintf(
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stderr, "%s: (4/%d) GetLastError returned 0x%08" PRIX32 " (expected ERROR_MORE_DATA)\n",
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__func__, format, dwError);
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return FALSE;
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}
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/* check if returned size is valid: must be the size of the buffer required, including the
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* terminating null character in this case */
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if (dwSize < dwMinSize || dwSize > nameBufferSize)
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{
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(void)fprintf(stderr,
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"%s: (5/%d) GetComputerNameExA returned wrong size %" PRIu32
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" (expected something in the range from %" PRIu32 " to %" PRIu32 ")\n",
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__func__, format, dwSize, dwMinSize, nameBufferSize);
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return FALSE;
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}
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dwNameLength = dwSize - 1;
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/* test with returned size */
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if (GetComputerNameExA(format, computerName1, &dwSize) == FALSE)
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{
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(void)fprintf(stderr, "%s: (6/%d) GetComputerNameExA failed with error: 0x%08" PRIX32 "\n",
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__func__, format, GetLastError());
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return FALSE;
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}
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/* check if returned size is valid */
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if (dwSize != dwNameLength)
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{
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(void)fprintf(stderr,
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"%s: (7/%d) GetComputerNameExA returned wrong size %" PRIu32
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" (expected %" PRIu32 ")\n",
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__func__, format, dwSize, dwNameLength);
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return FALSE;
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}
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/* check if string is correctly terminated */
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if (computerName1[dwSize] != 0)
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{
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(void)fprintf(stderr, "%s: (8/%d) string termination error\n", __func__, format);
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return FALSE;
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}
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/* test with real buffer size */
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dwSize = nameBufferSize;
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if (GetComputerNameExA(format, computerName2, &dwSize) == FALSE)
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{
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(void)fprintf(stderr, "%s: (9/%d) GetComputerNameExA failed with error: 0x%08" PRIX32 "\n",
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__func__, format, GetLastError());
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return FALSE;
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}
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/* check if returned size is valid */
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if (dwSize != dwNameLength)
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{
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(void)fprintf(stderr,
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"%s: (10/%d) GetComputerNameExA returned wrong size %" PRIu32
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" (expected %" PRIu32 ")\n",
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__func__, format, dwSize, dwNameLength);
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return FALSE;
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}
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/* check if string is correctly terminated */
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if (computerName2[dwSize] != 0)
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{
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(void)fprintf(stderr, "%s: (11/%d) string termination error\n", __func__, format);
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return FALSE;
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}
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/* compare the results */
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if (strcmp(computerName1, computerName2) != 0)
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{
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(void)fprintf(stderr, "%s: (12/%d) string compare mismatch\n", __func__, format);
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return FALSE;
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}
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/* test with off by one buffer size */
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dwSize = dwNameLength;
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if (GetComputerNameExA(format, computerName1, &dwSize) == TRUE)
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{
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(void)fprintf(
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stderr,
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"%s: (13/%d) GetComputerNameExA unexpectedly succeeded with limited buffer size\n",
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__func__, format);
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return FALSE;
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}
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/* check if returned size is valid */
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if (dwSize != dwNameLength + 1)
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{
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(void)fprintf(stderr,
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"%s: (14/%d) GetComputerNameExA returned wrong size %" PRIu32
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" (expected %" PRIu32 ")\n",
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__func__, format, dwSize, dwNameLength + 1);
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return FALSE;
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}
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return TRUE;
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}
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int TestGetComputerName(int argc, char* argv[])
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{
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WINPR_UNUSED(argc);
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WINPR_UNUSED(argv);
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if (!Test_GetComputerName())
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return -1;
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if (!Test_GetComputerNameEx_Format(ComputerNameNetBIOS))
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return -1;
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if (!Test_GetComputerNameEx_Format(ComputerNameDnsHostname))
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return -1;
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if (!Test_GetComputerNameEx_Format(ComputerNameDnsDomain))
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return -1;
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if (!Test_GetComputerNameEx_Format(ComputerNameDnsFullyQualified))
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return -1;
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if (!Test_GetComputerNameEx_Format(ComputerNamePhysicalNetBIOS))
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return -1;
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if (!Test_GetComputerNameEx_Format(ComputerNamePhysicalDnsHostname))
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return -1;
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if (!Test_GetComputerNameEx_Format(ComputerNamePhysicalDnsDomain))
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return -1;
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if (!Test_GetComputerNameEx_Format(ComputerNamePhysicalDnsFullyQualified))
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return -1;
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return 0;
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}
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