mirror of
https://git.proxmox.com/git/libgit2
synced 2025-05-03 06:17:02 +00:00
cceae9a25d
When turning UTF-8 paths into UCS-2 paths for Windows, always use the \\?\-prefixed paths. Because this bypasses the system's path canonicalization, handle the canonicalization functions ourselves. We must: 1. always use a backslash as a directory separator 2. only use a single backslash between directories 3. not rely on the system to translate "." and ".." in paths 4. remove trailing backslashes, except at the drive root (C:\)
633 lines
16 KiB
C
633 lines
16 KiB
C
#include "clar_libgit2.h"
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#include "posix.h"
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#include "buffer.h"
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#include "path.h"
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#ifdef GIT_WIN32
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# include "win32/reparse.h"
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#endif
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void test_core_link__cleanup(void)
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{
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#ifdef GIT_WIN32
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RemoveDirectory("lstat_junction");
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RemoveDirectory("lstat_dangling");
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RemoveDirectory("lstat_dangling_dir");
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RemoveDirectory("lstat_dangling_junction");
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RemoveDirectory("stat_junction");
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RemoveDirectory("stat_dangling");
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RemoveDirectory("stat_dangling_dir");
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RemoveDirectory("stat_dangling_junction");
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#endif
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}
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#ifdef GIT_WIN32
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static bool should_run(void)
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{
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static SID_IDENTIFIER_AUTHORITY authority = { SECURITY_NT_AUTHORITY };
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PSID admin_sid;
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BOOL is_admin;
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cl_win32_pass(AllocateAndInitializeSid(&authority, 2, SECURITY_BUILTIN_DOMAIN_RID, DOMAIN_ALIAS_RID_ADMINS, 0, 0, 0, 0, 0, 0, &admin_sid));
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cl_win32_pass(CheckTokenMembership(NULL, admin_sid, &is_admin));
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FreeSid(admin_sid);
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return is_admin ? true : false;
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}
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#else
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static bool should_run(void)
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{
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return true;
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}
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#endif
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static void do_symlink(const char *old, const char *new, int is_dir)
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{
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#ifndef GIT_WIN32
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GIT_UNUSED(is_dir);
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cl_must_pass(symlink(old, new));
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#else
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typedef DWORD (WINAPI *create_symlink_func)(LPCTSTR, LPCTSTR, DWORD);
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HMODULE module;
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create_symlink_func pCreateSymbolicLink;
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cl_assert(module = GetModuleHandle("kernel32"));
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cl_assert(pCreateSymbolicLink = (create_symlink_func)GetProcAddress(module, "CreateSymbolicLinkA"));
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cl_win32_pass(pCreateSymbolicLink(new, old, is_dir));
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#endif
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}
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static void do_hardlink(const char *old, const char *new)
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{
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#ifndef GIT_WIN32
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cl_must_pass(link(old, new));
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#else
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typedef DWORD (WINAPI *create_hardlink_func)(LPCTSTR, LPCTSTR, LPSECURITY_ATTRIBUTES);
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HMODULE module;
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create_hardlink_func pCreateHardLink;
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cl_assert(module = GetModuleHandle("kernel32"));
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cl_assert(pCreateHardLink = (create_hardlink_func)GetProcAddress(module, "CreateHardLinkA"));
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cl_win32_pass(pCreateHardLink(new, old, 0));
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#endif
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}
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#ifdef GIT_WIN32
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static void do_junction(const char *old, const char *new)
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{
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GIT_REPARSE_DATA_BUFFER *reparse_buf;
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HANDLE handle;
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git_buf unparsed_buf = GIT_BUF_INIT;
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wchar_t *subst_utf16, *print_utf16;
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DWORD ioctl_ret;
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int subst_utf16_len, subst_byte_len, print_utf16_len, print_byte_len, ret;
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USHORT reparse_buflen;
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size_t i;
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/* Junction targets must be the unparsed name, starting with \??\, using
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* backslashes instead of forward, and end in a trailing backslash.
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* eg: \??\C:\Foo\
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*/
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git_buf_puts(&unparsed_buf, "\\??\\");
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for (i = 0; i < strlen(old); i++)
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git_buf_putc(&unparsed_buf, old[i] == '/' ? '\\' : old[i]);
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git_buf_putc(&unparsed_buf, '\\');
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subst_utf16_len = git__utf8_to_16(NULL, 0, git_buf_cstr(&unparsed_buf));
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subst_byte_len = subst_utf16_len * sizeof(WCHAR);
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print_utf16_len = subst_utf16_len - 4;
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print_byte_len = subst_byte_len - (4 * sizeof(WCHAR));
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/* The junction must be an empty directory before the junction attribute
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* can be added.
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*/
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cl_win32_pass(CreateDirectoryA(new, NULL));
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handle = CreateFileA(new, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
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FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, NULL);
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cl_win32_pass(handle != INVALID_HANDLE_VALUE);
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reparse_buflen = (USHORT)(REPARSE_DATA_HEADER_SIZE +
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REPARSE_DATA_MOUNTPOINT_HEADER_SIZE +
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subst_byte_len + sizeof(WCHAR) +
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print_byte_len + sizeof(WCHAR));
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reparse_buf = LocalAlloc(LMEM_FIXED|LMEM_ZEROINIT, reparse_buflen);
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cl_assert(reparse_buf);
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subst_utf16 = reparse_buf->MountPointReparseBuffer.PathBuffer;
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print_utf16 = subst_utf16 + subst_utf16_len + 1;
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ret = git__utf8_to_16(subst_utf16, subst_utf16_len + 1,
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git_buf_cstr(&unparsed_buf));
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cl_assert_equal_i(subst_utf16_len, ret);
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ret = git__utf8_to_16(print_utf16,
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print_utf16_len + 1, git_buf_cstr(&unparsed_buf) + 4);
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cl_assert_equal_i(print_utf16_len, ret);
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reparse_buf->ReparseTag = IO_REPARSE_TAG_MOUNT_POINT;
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reparse_buf->MountPointReparseBuffer.SubstituteNameOffset = 0;
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reparse_buf->MountPointReparseBuffer.SubstituteNameLength = subst_byte_len;
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reparse_buf->MountPointReparseBuffer.PrintNameOffset = (USHORT)(subst_byte_len + sizeof(WCHAR));
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reparse_buf->MountPointReparseBuffer.PrintNameLength = print_byte_len;
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reparse_buf->ReparseDataLength = reparse_buflen - REPARSE_DATA_HEADER_SIZE;
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cl_win32_pass(DeviceIoControl(handle, FSCTL_SET_REPARSE_POINT,
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reparse_buf, reparse_buflen, NULL, 0, &ioctl_ret, NULL));
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CloseHandle(handle);
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LocalFree(reparse_buf);
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git_buf_free(&unparsed_buf);
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}
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static void do_custom_reparse(const char *path)
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{
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REPARSE_GUID_DATA_BUFFER *reparse_buf;
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HANDLE handle;
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DWORD ioctl_ret;
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const char *reparse_data = "Reparse points are silly.";
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size_t reparse_buflen = REPARSE_GUID_DATA_BUFFER_HEADER_SIZE +
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strlen(reparse_data) + 1;
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reparse_buf = LocalAlloc(LMEM_FIXED|LMEM_ZEROINIT, reparse_buflen);
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cl_assert(reparse_buf);
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reparse_buf->ReparseTag = 42;
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reparse_buf->ReparseDataLength = (WORD)(strlen(reparse_data) + 1);
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reparse_buf->ReparseGuid.Data1 = 0xdeadbeef;
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reparse_buf->ReparseGuid.Data2 = 0xdead;
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reparse_buf->ReparseGuid.Data3 = 0xbeef;
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reparse_buf->ReparseGuid.Data4[0] = 42;
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reparse_buf->ReparseGuid.Data4[1] = 42;
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reparse_buf->ReparseGuid.Data4[2] = 42;
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reparse_buf->ReparseGuid.Data4[3] = 42;
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reparse_buf->ReparseGuid.Data4[4] = 42;
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reparse_buf->ReparseGuid.Data4[5] = 42;
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reparse_buf->ReparseGuid.Data4[6] = 42;
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reparse_buf->ReparseGuid.Data4[7] = 42;
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reparse_buf->ReparseGuid.Data4[8] = 42;
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memcpy(reparse_buf->GenericReparseBuffer.DataBuffer,
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reparse_data, strlen(reparse_data) + 1);
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handle = CreateFileA(path, GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
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FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS, NULL);
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cl_win32_pass(handle != INVALID_HANDLE_VALUE);
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cl_win32_pass(DeviceIoControl(handle, FSCTL_SET_REPARSE_POINT,
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reparse_buf,
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reparse_buf->ReparseDataLength + REPARSE_GUID_DATA_BUFFER_HEADER_SIZE,
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NULL, 0, &ioctl_ret, NULL));
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CloseHandle(handle);
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LocalFree(reparse_buf);
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}
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#endif
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void test_core_link__stat_regular_file(void)
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{
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struct stat st;
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cl_git_rewritefile("stat_regfile", "This is a regular file!\n");
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cl_must_pass(p_stat("stat_regfile", &st));
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cl_assert(S_ISREG(st.st_mode));
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cl_assert_equal_i(24, st.st_size);
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}
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void test_core_link__lstat_regular_file(void)
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{
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struct stat st;
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cl_git_rewritefile("lstat_regfile", "This is a regular file!\n");
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cl_must_pass(p_stat("lstat_regfile", &st));
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cl_assert(S_ISREG(st.st_mode));
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cl_assert_equal_i(24, st.st_size);
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}
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void test_core_link__stat_symlink(void)
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{
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struct stat st;
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if (!should_run())
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clar__skip();
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cl_git_rewritefile("stat_target", "This is the target of a symbolic link.\n");
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do_symlink("stat_target", "stat_symlink", 0);
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cl_must_pass(p_stat("stat_target", &st));
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cl_assert(S_ISREG(st.st_mode));
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cl_assert_equal_i(39, st.st_size);
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cl_must_pass(p_stat("stat_symlink", &st));
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cl_assert(S_ISREG(st.st_mode));
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cl_assert_equal_i(39, st.st_size);
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}
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void test_core_link__stat_symlink_directory(void)
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{
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struct stat st;
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if (!should_run())
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clar__skip();
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p_mkdir("stat_dirtarget", 0777);
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do_symlink("stat_dirtarget", "stat_dirlink", 1);
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cl_must_pass(p_stat("stat_dirtarget", &st));
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cl_assert(S_ISDIR(st.st_mode));
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cl_must_pass(p_stat("stat_dirlink", &st));
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cl_assert(S_ISDIR(st.st_mode));
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}
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void test_core_link__stat_symlink_chain(void)
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{
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struct stat st;
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if (!should_run())
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clar__skip();
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cl_git_rewritefile("stat_final_target", "Final target of some symbolic links...\n");
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do_symlink("stat_final_target", "stat_chain_3", 0);
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do_symlink("stat_chain_3", "stat_chain_2", 0);
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do_symlink("stat_chain_2", "stat_chain_1", 0);
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cl_must_pass(p_stat("stat_chain_1", &st));
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cl_assert(S_ISREG(st.st_mode));
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cl_assert_equal_i(39, st.st_size);
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}
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void test_core_link__stat_dangling_symlink(void)
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{
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struct stat st;
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if (!should_run())
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clar__skip();
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do_symlink("stat_nonexistent", "stat_dangling", 0);
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cl_must_fail(p_stat("stat_nonexistent", &st));
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cl_must_fail(p_stat("stat_dangling", &st));
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}
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void test_core_link__stat_dangling_symlink_directory(void)
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{
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struct stat st;
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if (!should_run())
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clar__skip();
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do_symlink("stat_nonexistent", "stat_dangling_dir", 1);
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cl_must_fail(p_stat("stat_nonexistent_dir", &st));
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cl_must_fail(p_stat("stat_dangling", &st));
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}
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void test_core_link__lstat_symlink(void)
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{
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git_buf target_path = GIT_BUF_INIT;
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struct stat st;
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if (!should_run())
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clar__skip();
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/* Windows always writes the canonical path as the link target, so
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* write the full path on all platforms.
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*/
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git_buf_join(&target_path, '/', clar_sandbox_path(), "lstat_target");
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cl_git_rewritefile("lstat_target", "This is the target of a symbolic link.\n");
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do_symlink(git_buf_cstr(&target_path), "lstat_symlink", 0);
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cl_must_pass(p_lstat("lstat_target", &st));
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cl_assert(S_ISREG(st.st_mode));
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cl_assert_equal_i(39, st.st_size);
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cl_must_pass(p_lstat("lstat_symlink", &st));
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cl_assert(S_ISLNK(st.st_mode));
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cl_assert_equal_i(git_buf_len(&target_path), st.st_size);
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git_buf_free(&target_path);
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}
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void test_core_link__lstat_symlink_directory(void)
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{
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git_buf target_path = GIT_BUF_INIT;
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struct stat st;
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if (!should_run())
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clar__skip();
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git_buf_join(&target_path, '/', clar_sandbox_path(), "lstat_dirtarget");
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p_mkdir("lstat_dirtarget", 0777);
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do_symlink(git_buf_cstr(&target_path), "lstat_dirlink", 1);
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cl_must_pass(p_lstat("lstat_dirtarget", &st));
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cl_assert(S_ISDIR(st.st_mode));
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cl_must_pass(p_lstat("lstat_dirlink", &st));
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cl_assert(S_ISLNK(st.st_mode));
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cl_assert_equal_i(git_buf_len(&target_path), st.st_size);
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git_buf_free(&target_path);
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}
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void test_core_link__lstat_dangling_symlink(void)
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{
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struct stat st;
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if (!should_run())
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clar__skip();
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do_symlink("lstat_nonexistent", "lstat_dangling", 0);
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cl_must_fail(p_lstat("lstat_nonexistent", &st));
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cl_must_pass(p_lstat("lstat_dangling", &st));
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cl_assert(S_ISLNK(st.st_mode));
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cl_assert_equal_i(strlen("lstat_nonexistent"), st.st_size);
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}
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void test_core_link__lstat_dangling_symlink_directory(void)
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{
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struct stat st;
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if (!should_run())
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clar__skip();
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do_symlink("lstat_nonexistent", "lstat_dangling_dir", 1);
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cl_must_fail(p_lstat("lstat_nonexistent", &st));
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cl_must_pass(p_lstat("lstat_dangling_dir", &st));
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cl_assert(S_ISLNK(st.st_mode));
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cl_assert_equal_i(strlen("lstat_nonexistent"), st.st_size);
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}
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void test_core_link__stat_junction(void)
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{
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#ifdef GIT_WIN32
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git_buf target_path = GIT_BUF_INIT;
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struct stat st;
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git_buf_join(&target_path, '/', clar_sandbox_path(), "stat_junctarget");
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p_mkdir("stat_junctarget", 0777);
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do_junction(git_buf_cstr(&target_path), "stat_junction");
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cl_must_pass(p_stat("stat_junctarget", &st));
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cl_assert(S_ISDIR(st.st_mode));
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cl_must_pass(p_stat("stat_junction", &st));
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cl_assert(S_ISDIR(st.st_mode));
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git_buf_free(&target_path);
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#endif
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}
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void test_core_link__stat_dangling_junction(void)
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{
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#ifdef GIT_WIN32
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git_buf target_path = GIT_BUF_INIT;
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struct stat st;
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git_buf_join(&target_path, '/', clar_sandbox_path(), "stat_nonexistent_junctarget");
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p_mkdir("stat_nonexistent_junctarget", 0777);
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do_junction(git_buf_cstr(&target_path), "stat_dangling_junction");
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RemoveDirectory("stat_nonexistent_junctarget");
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cl_must_fail(p_stat("stat_nonexistent_junctarget", &st));
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cl_must_fail(p_stat("stat_dangling_junction", &st));
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git_buf_free(&target_path);
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#endif
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}
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void test_core_link__lstat_junction(void)
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{
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#ifdef GIT_WIN32
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git_buf target_path = GIT_BUF_INIT;
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struct stat st;
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git_buf_join(&target_path, '/', clar_sandbox_path(), "lstat_junctarget");
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p_mkdir("lstat_junctarget", 0777);
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do_junction(git_buf_cstr(&target_path), "lstat_junction");
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cl_must_pass(p_lstat("lstat_junctarget", &st));
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cl_assert(S_ISDIR(st.st_mode));
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cl_must_pass(p_lstat("lstat_junction", &st));
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cl_assert(S_ISLNK(st.st_mode));
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git_buf_free(&target_path);
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#endif
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}
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void test_core_link__lstat_dangling_junction(void)
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{
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#ifdef GIT_WIN32
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git_buf target_path = GIT_BUF_INIT;
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struct stat st;
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git_buf_join(&target_path, '/', clar_sandbox_path(), "lstat_nonexistent_junctarget");
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p_mkdir("lstat_nonexistent_junctarget", 0777);
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do_junction(git_buf_cstr(&target_path), "lstat_dangling_junction");
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RemoveDirectory("lstat_nonexistent_junctarget");
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cl_must_fail(p_lstat("lstat_nonexistent_junctarget", &st));
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cl_must_pass(p_lstat("lstat_dangling_junction", &st));
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cl_assert(S_ISLNK(st.st_mode));
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cl_assert_equal_i(git_buf_len(&target_path), st.st_size);
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git_buf_free(&target_path);
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#endif
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}
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void test_core_link__stat_hardlink(void)
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{
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struct stat st;
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|
|
if (!should_run())
|
|
clar__skip();
|
|
|
|
cl_git_rewritefile("stat_hardlink1", "This file has many names!\n");
|
|
do_hardlink("stat_hardlink1", "stat_hardlink2");
|
|
|
|
cl_must_pass(p_stat("stat_hardlink1", &st));
|
|
cl_assert(S_ISREG(st.st_mode));
|
|
cl_assert_equal_i(26, st.st_size);
|
|
|
|
cl_must_pass(p_stat("stat_hardlink2", &st));
|
|
cl_assert(S_ISREG(st.st_mode));
|
|
cl_assert_equal_i(26, st.st_size);
|
|
}
|
|
|
|
void test_core_link__lstat_hardlink(void)
|
|
{
|
|
struct stat st;
|
|
|
|
if (!should_run())
|
|
clar__skip();
|
|
|
|
cl_git_rewritefile("lstat_hardlink1", "This file has many names!\n");
|
|
do_hardlink("lstat_hardlink1", "lstat_hardlink2");
|
|
|
|
cl_must_pass(p_lstat("lstat_hardlink1", &st));
|
|
cl_assert(S_ISREG(st.st_mode));
|
|
cl_assert_equal_i(26, st.st_size);
|
|
|
|
cl_must_pass(p_lstat("lstat_hardlink2", &st));
|
|
cl_assert(S_ISREG(st.st_mode));
|
|
cl_assert_equal_i(26, st.st_size);
|
|
}
|
|
|
|
void test_core_link__stat_reparse_point(void)
|
|
{
|
|
#ifdef GIT_WIN32
|
|
struct stat st;
|
|
|
|
/* Generic reparse points should be treated as regular files, only
|
|
* symlinks and junctions should be treated as links.
|
|
*/
|
|
|
|
cl_git_rewritefile("stat_reparse", "This is a reparse point!\n");
|
|
do_custom_reparse("stat_reparse");
|
|
|
|
cl_must_pass(p_lstat("stat_reparse", &st));
|
|
cl_assert(S_ISREG(st.st_mode));
|
|
cl_assert_equal_i(25, st.st_size);
|
|
#endif
|
|
}
|
|
|
|
void test_core_link__lstat_reparse_point(void)
|
|
{
|
|
#ifdef GIT_WIN32
|
|
struct stat st;
|
|
|
|
cl_git_rewritefile("lstat_reparse", "This is a reparse point!\n");
|
|
do_custom_reparse("lstat_reparse");
|
|
|
|
cl_must_pass(p_lstat("lstat_reparse", &st));
|
|
cl_assert(S_ISREG(st.st_mode));
|
|
cl_assert_equal_i(25, st.st_size);
|
|
#endif
|
|
}
|
|
|
|
void test_core_link__readlink_nonexistent_file(void)
|
|
{
|
|
char buf[2048];
|
|
|
|
cl_must_fail(p_readlink("readlink_nonexistent", buf, 2048));
|
|
cl_assert_equal_i(ENOENT, errno);
|
|
}
|
|
|
|
void test_core_link__readlink_normal_file(void)
|
|
{
|
|
char buf[2048];
|
|
|
|
cl_git_rewritefile("readlink_regfile", "This is a regular file!\n");
|
|
cl_must_fail(p_readlink("readlink_regfile", buf, 2048));
|
|
cl_assert_equal_i(EINVAL, errno);
|
|
}
|
|
|
|
void test_core_link__readlink_symlink(void)
|
|
{
|
|
git_buf target_path = GIT_BUF_INIT;
|
|
int len;
|
|
char buf[2048];
|
|
|
|
if (!should_run())
|
|
clar__skip();
|
|
|
|
git_buf_join(&target_path, '/', clar_sandbox_path(), "readlink_target");
|
|
|
|
cl_git_rewritefile("readlink_target", "This is the target of a symlink\n");
|
|
do_symlink(git_buf_cstr(&target_path), "readlink_link", 0);
|
|
|
|
len = p_readlink("readlink_link", buf, 2048);
|
|
cl_must_pass(len);
|
|
|
|
buf[len] = 0;
|
|
|
|
cl_assert_equal_s(git_buf_cstr(&target_path), buf);
|
|
|
|
git_buf_free(&target_path);
|
|
}
|
|
|
|
void test_core_link__readlink_dangling(void)
|
|
{
|
|
git_buf target_path = GIT_BUF_INIT;
|
|
int len;
|
|
char buf[2048];
|
|
|
|
if (!should_run())
|
|
clar__skip();
|
|
|
|
git_buf_join(&target_path, '/', clar_sandbox_path(), "readlink_nonexistent");
|
|
|
|
do_symlink(git_buf_cstr(&target_path), "readlink_dangling", 0);
|
|
|
|
len = p_readlink("readlink_dangling", buf, 2048);
|
|
cl_must_pass(len);
|
|
|
|
buf[len] = 0;
|
|
|
|
cl_assert_equal_s(git_buf_cstr(&target_path), buf);
|
|
|
|
git_buf_free(&target_path);
|
|
}
|
|
|
|
void test_core_link__readlink_multiple(void)
|
|
{
|
|
git_buf target_path = GIT_BUF_INIT,
|
|
path3 = GIT_BUF_INIT, path2 = GIT_BUF_INIT, path1 = GIT_BUF_INIT;
|
|
int len;
|
|
char buf[2048];
|
|
|
|
if (!should_run())
|
|
clar__skip();
|
|
|
|
git_buf_join(&target_path, '/', clar_sandbox_path(), "readlink_final");
|
|
git_buf_join(&path3, '/', clar_sandbox_path(), "readlink_3");
|
|
git_buf_join(&path2, '/', clar_sandbox_path(), "readlink_2");
|
|
git_buf_join(&path1, '/', clar_sandbox_path(), "readlink_1");
|
|
|
|
do_symlink(git_buf_cstr(&target_path), git_buf_cstr(&path3), 0);
|
|
do_symlink(git_buf_cstr(&path3), git_buf_cstr(&path2), 0);
|
|
do_symlink(git_buf_cstr(&path2), git_buf_cstr(&path1), 0);
|
|
|
|
len = p_readlink("readlink_1", buf, 2048);
|
|
cl_must_pass(len);
|
|
|
|
buf[len] = 0;
|
|
|
|
cl_assert_equal_s(git_buf_cstr(&path2), buf);
|
|
|
|
git_buf_free(&path1);
|
|
git_buf_free(&path2);
|
|
git_buf_free(&path3);
|
|
git_buf_free(&target_path);
|
|
}
|