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Diffstat (limited to '')
| -rw-r--r-- | winpr/libwinpr/sysinfo/test/TestGetComputerName.c | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/winpr/libwinpr/sysinfo/test/TestGetComputerName.c b/winpr/libwinpr/sysinfo/test/TestGetComputerName.c new file mode 100644 index 0000000..4444056 --- /dev/null +++ b/winpr/libwinpr/sysinfo/test/TestGetComputerName.c @@ -0,0 +1,366 @@ +#include <stdio.h> +#include <string.h> +#include <winpr/wtypes.h> +#include <winpr/sysinfo.h> +#include <winpr/error.h> + +static BOOL Test_GetComputerName(void) +{ + /** + * BOOL WINAPI GetComputerName(LPTSTR lpBuffer, LPDWORD lpnSize); + * + * GetComputerName retrieves the NetBIOS name of the local computer. + * + * lpBuffer [out] + * A pointer to a buffer that receives the computer name or the cluster virtual server name. + * The buffer size should be large enough to contain MAX_COMPUTERNAME_LENGTH + 1 characters. + * + * lpnSize [in, out] + * On input, specifies the size of the buffer, in TCHARs. + * On output, the number of TCHARs copied to the destination buffer, not including the + * terminating null character. If the buffer is too small, the function fails and GetLastError + * returns ERROR_BUFFER_OVERFLOW. The lpnSize parameter specifies the size of the buffer + * required, including the terminating null character + * + */ + + CHAR netbiosName1[MAX_COMPUTERNAME_LENGTH + 1]; + CHAR netbiosName2[MAX_COMPUTERNAME_LENGTH + 1]; + const DWORD netbiosBufferSize = sizeof(netbiosName1) / sizeof(CHAR); + DWORD dwSize = 0; + DWORD dwNameLength = 0; + DWORD dwError = 0; + + memset(netbiosName1, 0xAA, netbiosBufferSize); + memset(netbiosName2, 0xBB, netbiosBufferSize); + + /* test with null buffer and zero size (required if buffer is null) */ + dwSize = 0; + if (GetComputerNameA(NULL, &dwSize) == TRUE) + { + fprintf(stderr, "%s: (1) GetComputerNameA unexpectedly succeeded with null buffer\n", + __func__); + return FALSE; + } + if ((dwError = GetLastError()) != ERROR_BUFFER_OVERFLOW) + { + fprintf(stderr, + "%s: (2) GetLastError returned 0x%08" PRIX32 " (expected ERROR_BUFFER_OVERFLOW)\n", + __func__, dwError); + return FALSE; + } + + /* test with valid buffer and zero size */ + dwSize = 0; + if (GetComputerNameA(netbiosName1, &dwSize) == TRUE) + { + fprintf(stderr, + "%s: (3) GetComputerNameA unexpectedly succeeded with zero size parameter\n", + __func__); + return FALSE; + } + if ((dwError = GetLastError()) != ERROR_BUFFER_OVERFLOW) + { + fprintf(stderr, + "%s: (4) GetLastError returned 0x%08" PRIX32 " (expected ERROR_BUFFER_OVERFLOW)\n", + __func__, dwError); + return FALSE; + } + /* check if returned size is valid: must be the size of the buffer required, including the + * terminating null character in this case */ + if (dwSize < 2 || dwSize > netbiosBufferSize) + { + fprintf(stderr, + "%s: (5) GetComputerNameA returned wrong size %" PRIu32 + " (expected something in the range from 2 to %" PRIu32 ")\n", + __func__, dwSize, netbiosBufferSize); + return FALSE; + } + dwNameLength = dwSize - 1; + + /* test with returned size */ + if (GetComputerNameA(netbiosName1, &dwSize) == FALSE) + { + fprintf(stderr, "%s: (6) GetComputerNameA failed with error: 0x%08" PRIX32 "\n", __func__, + GetLastError()); + return FALSE; + } + /* check if returned size is valid */ + if (dwSize != dwNameLength) + { + fprintf(stderr, + "%s: (7) GetComputerNameA returned wrong size %" PRIu32 " (expected %" PRIu32 ")\n", + __func__, dwSize, dwNameLength); + return FALSE; + } + /* check if string is correctly terminated */ + if (netbiosName1[dwSize] != 0) + { + fprintf(stderr, "%s: (8) string termination error\n", __func__); + return FALSE; + } + + /* test with real buffer size */ + dwSize = netbiosBufferSize; + if (GetComputerNameA(netbiosName2, &dwSize) == FALSE) + { + fprintf(stderr, "%s: (9) GetComputerNameA failed with error: 0x%08" PRIX32 "\n", __func__, + GetLastError()); + return FALSE; + } + /* check if returned size is valid */ + if (dwSize != dwNameLength) + { + fprintf(stderr, + "%s: (10) GetComputerNameA returned wrong size %" PRIu32 " (expected %" PRIu32 + ")\n", + __func__, dwSize, dwNameLength); + return FALSE; + } + /* check if string is correctly terminated */ + if (netbiosName2[dwSize] != 0) + { + fprintf(stderr, "%s: (11) string termination error\n", __func__); + return FALSE; + } + + /* compare the results */ + if (strcmp(netbiosName1, netbiosName2)) + { + fprintf(stderr, "%s: (12) string compare mismatch\n", __func__); + return FALSE; + } + + /* test with off by one buffer size */ + dwSize = dwNameLength; + if (GetComputerNameA(netbiosName1, &dwSize) == TRUE) + { + fprintf(stderr, + "%s: (13) GetComputerNameA unexpectedly succeeded with limited buffer size\n", + __func__); + return FALSE; + } + /* check if returned size is valid */ + if (dwSize != dwNameLength + 1) + { + fprintf(stderr, + "%s: (14) GetComputerNameA returned wrong size %" PRIu32 " (expected %" PRIu32 + ")\n", + __func__, dwSize, dwNameLength + 1); + return FALSE; + } + + return TRUE; +} + +static BOOL Test_GetComputerNameEx_Format(COMPUTER_NAME_FORMAT format) +{ + /** + * BOOL WINAPI GetComputerNameEx(COMPUTER_NAME_FORMAT NameType, LPTSTR lpBuffer, LPDWORD + * lpnSize); + * + * Retrieves a NetBIOS or DNS name associated with the local computer. + * + * NameType [in] + * ComputerNameNetBIOS + * ComputerNameDnsHostname + * ComputerNameDnsDomain + * ComputerNameDnsFullyQualified + * ComputerNamePhysicalNetBIOS + * ComputerNamePhysicalDnsHostname + * ComputerNamePhysicalDnsDomain + * ComputerNamePhysicalDnsFullyQualified + * + * lpBuffer [out] + * A pointer to a buffer that receives the computer name or the cluster virtual server name. + * The length of the name may be greater than MAX_COMPUTERNAME_LENGTH characters because DNS + * allows longer names. To ensure that this buffer is large enough, set this parameter to NULL + * and use the required buffer size returned in the lpnSize parameter. + * + * lpnSize [in, out] + * On input, specifies the size of the buffer, in TCHARs. + * On output, receives the number of TCHARs copied to the destination buffer, not including the + * terminating null character. If the buffer is too small, the function fails and GetLastError + * returns ERROR_MORE_DATA. This parameter receives the size of the buffer required, including + * the terminating null character. If lpBuffer is NULL, this parameter must be zero. + * + */ + + CHAR computerName1[255 + 1]; + CHAR computerName2[255 + 1]; + + const DWORD nameBufferSize = sizeof(computerName1) / sizeof(CHAR); + DWORD dwSize = 0; + DWORD dwMinSize = 0; + DWORD dwNameLength = 0; + DWORD dwError = 0; + + memset(computerName1, 0xAA, nameBufferSize); + memset(computerName2, 0xBB, nameBufferSize); + + if (format == ComputerNameDnsDomain || format == ComputerNamePhysicalDnsDomain) + { + /* domain names may be empty, terminating null only */ + dwMinSize = 1; + } + else + { + /* computer names must be at least 1 character */ + dwMinSize = 2; + } + + /* test with null buffer and zero size (required if buffer is null) */ + dwSize = 0; + if (GetComputerNameExA(format, NULL, &dwSize) == TRUE) + { + fprintf(stderr, "%s: (1/%d) GetComputerNameExA unexpectedly succeeded with null buffer\n", + __func__, format); + return FALSE; + } + if ((dwError = GetLastError()) != ERROR_MORE_DATA) + { + fprintf(stderr, + "%s: (2/%d) GetLastError returned 0x%08" PRIX32 " (expected ERROR_MORE_DATA)\n", + __func__, format, dwError); + return FALSE; + } + + /* test with valid buffer and zero size */ + dwSize = 0; + if (GetComputerNameExA(format, computerName1, &dwSize) == TRUE) + { + fprintf(stderr, + "%s: (3/%d) GetComputerNameExA unexpectedly succeeded with zero size parameter\n", + __func__, format); + return FALSE; + } + if ((dwError = GetLastError()) != ERROR_MORE_DATA) + { + fprintf(stderr, + "%s: (4/%d) GetLastError returned 0x%08" PRIX32 " (expected ERROR_MORE_DATA)\n", + __func__, format, dwError); + return FALSE; + } + /* check if returned size is valid: must be the size of the buffer required, including the + * terminating null character in this case */ + if (dwSize < dwMinSize || dwSize > nameBufferSize) + { + fprintf(stderr, + "%s: (5/%d) GetComputerNameExA returned wrong size %" PRIu32 + " (expected something in the range from %" PRIu32 " to %" PRIu32 ")\n", + __func__, format, dwSize, dwMinSize, nameBufferSize); + return FALSE; + } + dwNameLength = dwSize - 1; + + /* test with returned size */ + if (GetComputerNameExA(format, computerName1, &dwSize) == FALSE) + { + fprintf(stderr, "%s: (6/%d) GetComputerNameExA failed with error: 0x%08" PRIX32 "\n", + __func__, format, GetLastError()); + return FALSE; + } + /* check if returned size is valid */ + if (dwSize != dwNameLength) + { + fprintf(stderr, + "%s: (7/%d) GetComputerNameExA returned wrong size %" PRIu32 " (expected %" PRIu32 + ")\n", + __func__, format, dwSize, dwNameLength); + return FALSE; + } + /* check if string is correctly terminated */ + if (computerName1[dwSize] != 0) + { + fprintf(stderr, "%s: (8/%d) string termination error\n", __func__, format); + return FALSE; + } + + /* test with real buffer size */ + dwSize = nameBufferSize; + if (GetComputerNameExA(format, computerName2, &dwSize) == FALSE) + { + fprintf(stderr, "%s: (9/%d) GetComputerNameExA failed with error: 0x%08" PRIX32 "\n", + __func__, format, GetLastError()); + return FALSE; + } + /* check if returned size is valid */ + if (dwSize != dwNameLength) + { + fprintf(stderr, + "%s: (10/%d) GetComputerNameExA returned wrong size %" PRIu32 " (expected %" PRIu32 + ")\n", + __func__, format, dwSize, dwNameLength); + return FALSE; + } + /* check if string is correctly terminated */ + if (computerName2[dwSize] != 0) + { + fprintf(stderr, "%s: (11/%d) string termination error\n", __func__, format); + return FALSE; + } + + /* compare the results */ + if (strcmp(computerName1, computerName2)) + { + fprintf(stderr, "%s: (12/%d) string compare mismatch\n", __func__, format); + return FALSE; + } + + /* test with off by one buffer size */ + dwSize = dwNameLength; + if (GetComputerNameExA(format, computerName1, &dwSize) == TRUE) + { + fprintf(stderr, + "%s: (13/%d) GetComputerNameExA unexpectedly succeeded with limited buffer size\n", + __func__, format); + return FALSE; + } + /* check if returned size is valid */ + if (dwSize != dwNameLength + 1) + { + fprintf(stderr, + "%s: (14/%d) GetComputerNameExA returned wrong size %" PRIu32 " (expected %" PRIu32 + ")\n", + __func__, format, dwSize, dwNameLength + 1); + return FALSE; + } + + return TRUE; +} + +int TestGetComputerName(int argc, char* argv[]) +{ + + WINPR_UNUSED(argc); + WINPR_UNUSED(argv); + + if (!Test_GetComputerName()) + return -1; + + if (!Test_GetComputerNameEx_Format(ComputerNameNetBIOS)) + return -1; + + if (!Test_GetComputerNameEx_Format(ComputerNameDnsHostname)) + return -1; + + if (!Test_GetComputerNameEx_Format(ComputerNameDnsDomain)) + return -1; + + if (!Test_GetComputerNameEx_Format(ComputerNameDnsFullyQualified)) + return -1; + + if (!Test_GetComputerNameEx_Format(ComputerNamePhysicalNetBIOS)) + return -1; + + if (!Test_GetComputerNameEx_Format(ComputerNamePhysicalDnsHostname)) + return -1; + + if (!Test_GetComputerNameEx_Format(ComputerNamePhysicalDnsDomain)) + return -1; + + if (!Test_GetComputerNameEx_Format(ComputerNamePhysicalDnsFullyQualified)) + return -1; + + return 0; +} |