/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#include <ngx_config.h>
#include <ngx_core.h>
#define NGX_UTF16_BUFLEN 256
#define NGX_UTF8_BUFLEN 512
static ngx_int_t ngx_win32_check_filename(u_short *u, size_t len,
ngx_uint_t dirname);
static u_short *ngx_utf8_to_utf16(u_short *utf16, u_char *utf8, size_t *len,
size_t reserved);
static u_char *ngx_utf16_to_utf8(u_char *utf8, u_short *utf16, size_t *len,
size_t *allocated);
uint32_t ngx_utf16_decode(u_short **u, size_t n);
/* FILE_FLAG_BACKUP_SEMANTICS allows to obtain a handle to a directory */
ngx_fd_t
ngx_open_file(u_char *name, u_long mode, u_long create, u_long access)
{
size_t len;
u_short *u;
ngx_fd_t fd;
ngx_err_t err;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
u = ngx_utf8_to_utf16(utf16, name, &len, 0);
if (u == NULL) {
return INVALID_HANDLE_VALUE;
}
fd = INVALID_HANDLE_VALUE;
if (create == NGX_FILE_OPEN
&& ngx_win32_check_filename(u, len, 0) != NGX_OK)
{
goto failed;
}
fd = CreateFileW(u, mode,
FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
NULL, create, FILE_FLAG_BACKUP_SEMANTICS, NULL);
failed:
if (u != utf16) {
err = ngx_errno;
ngx_free(u);
ngx_set_errno(err);
}
return fd;
}
ngx_fd_t
ngx_open_tempfile(u_char *name, ngx_uint_t persistent, ngx_uint_t access)
{
size_t len;
u_short *u;
ngx_fd_t fd;
ngx_err_t err;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
u = ngx_utf8_to_utf16(utf16, name, &len, 0);
if (u == NULL) {
return INVALID_HANDLE_VALUE;
}
fd = CreateFileW(u,
GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
NULL,
CREATE_NEW,
persistent ? 0:
FILE_ATTRIBUTE_TEMPORARY|FILE_FLAG_DELETE_ON_CLOSE,
NULL);
if (u != utf16) {
err = ngx_errno;
ngx_free(u);
ngx_set_errno(err);
}
return fd;
}
ssize_t
ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset)
{
u_long n;
ngx_err_t err;
OVERLAPPED ovlp, *povlp;
ovlp.Internal = 0;
ovlp.InternalHigh = 0;
ovlp.Offset = (u_long) offset;
ovlp.OffsetHigh = (u_long) (offset >> 32);
ovlp.hEvent = NULL;
povlp = &ovlp;
if (ReadFile(file->fd, buf, size, &n, povlp) == 0) {
err = ngx_errno;
if (err == ERROR_HANDLE_EOF) {
return 0;
}
ngx_log_error(NGX_LOG_ERR, file->log, err,
"ReadFile() \"%s\" failed", file->name.data);
return NGX_ERROR;
}
file->offset += n;
return n;
}
ssize_t
ngx_write_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset)
{
u_long n;
OVERLAPPED ovlp, *povlp;
ovlp.Internal = 0;
ovlp.InternalHigh = 0;
ovlp.Offset = (u_long) offset;
ovlp.OffsetHigh = (u_long) (offset >> 32);
ovlp.hEvent = NULL;
povlp = &ovlp;
if (WriteFile(file->fd, buf, size, &n, povlp) == 0) {
ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno,
"WriteFile() \"%s\" failed", file->name.data);
return NGX_ERROR;
}
if (n != size) {
ngx_log_error(NGX_LOG_CRIT, file->log, 0,
"WriteFile() \"%s\" has written only %ul of %uz",
file->name.data, n, size);
return NGX_ERROR;
}
file->offset += n;
return n;
}
ssize_t
ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset,
ngx_pool_t *pool)
{
u_char *buf, *prev;
size_t size;
ssize_t total, n;
total = 0;
while (cl) {
buf = cl->buf->pos;
prev = buf;
size = 0;
/* coalesce the neighbouring bufs */
while (cl && prev == cl->buf->pos) {
size += cl->buf->last - cl->buf->pos;
prev = cl->buf->last;
cl = cl->next;
}
n = ngx_write_file(file, buf, size, offset);
if (n == NGX_ERROR) {
return NGX_ERROR;
}
total += n;
offset += n;
}
return total;
}
ssize_t
ngx_read_fd(ngx_fd_t fd, void *buf, size_t size)
{
u_long n;
if (ReadFile(fd, buf, size, &n, NULL) != 0) {
return (size_t) n;
}
return -1;
}
ssize_t
ngx_write_fd(ngx_fd_t fd, void *buf, size_t size)
{
u_long n;
if (WriteFile(fd, buf, size, &n, NULL) != 0) {
return (size_t) n;
}
return -1;
}
ssize_t
ngx_write_console(ngx_fd_t fd, void *buf, size_t size)
{
u_long n;
(void) CharToOemBuff(buf, buf, size);
if (WriteFile(fd, buf, size, &n, NULL) != 0) {
return (size_t) n;
}
return -1;
}
ngx_int_t
ngx_delete_file(u_char *name)
{
long rc;
size_t len;
u_short *u;
ngx_err_t err;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
u = ngx_utf8_to_utf16(utf16, name, &len, 0);
if (u == NULL) {
return NGX_FILE_ERROR;
}
rc = NGX_FILE_ERROR;
if (ngx_win32_check_filename(u, len, 0) != NGX_OK) {
goto failed;
}
rc = DeleteFileW(u);
failed:
if (u != utf16) {
err = ngx_errno;
ngx_free(u);
ngx_set_errno(err);
}
return rc;
}
ngx_int_t
ngx_rename_file(u_char *from, u_char *to)
{
long rc;
size_t len;
u_short *fu, *tu;
ngx_err_t err;
u_short utf16f[NGX_UTF16_BUFLEN];
u_short utf16t[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
fu = ngx_utf8_to_utf16(utf16f, from, &len, 0);
if (fu == NULL) {
return NGX_FILE_ERROR;
}
rc = NGX_FILE_ERROR;
tu = NULL;
if (ngx_win32_check_filename(fu, len, 0) != NGX_OK) {
goto failed;
}
len = NGX_UTF16_BUFLEN;
tu = ngx_utf8_to_utf16(utf16t, to, &len, 0);
if (tu == NULL) {
goto failed;
}
if (ngx_win32_check_filename(tu, len, 1) != NGX_OK) {
goto failed;
}
rc = MoveFileW(fu, tu);
failed:
if (fu != utf16f) {
err = ngx_errno;
ngx_free(fu);
ngx_set_errno(err);
}
if (tu && tu != utf16t) {
err = ngx_errno;
ngx_free(tu);
ngx_set_errno(err);
}
return rc;
}
ngx_err_t
ngx_win32_rename_file(ngx_str_t *from, ngx_str_t *to, ngx_log_t *log)
{
u_char *name;
ngx_err_t err;
ngx_uint_t collision;
ngx_atomic_uint_t num;
name = ngx_alloc(to->len + 1 + NGX_ATOMIC_T_LEN + 1 + sizeof("DELETE"),
log);
if (name == NULL) {
return NGX_ENOMEM;
}
ngx_memcpy(name, to->data, to->len);
collision = 0;
/* mutex_lock() (per cache or single ?) */
for ( ;; ) {
num = ngx_next_temp_number(collision);
ngx_sprintf(name + to->len, ".%0muA.DELETE%Z", num);
if (ngx_rename_file(to->data, name) != NGX_FILE_ERROR) {
break;
}
err = ngx_errno;
if (err == NGX_EEXIST || err == NGX_EEXIST_FILE) {
collision = 1;
continue;
}
ngx_log_error(NGX_LOG_CRIT, log, err,
"MoveFile() \"%s\" to \"%s\" failed", to->data, name);
goto failed;
}
if (ngx_rename_file(from->data, to->data) == NGX_FILE_ERROR) {
err = ngx_errno;
} else {
err = 0;
}
if (ngx_delete_file(name) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
"DeleteFile() \"%s\" failed", name);
}
failed:
/* mutex_unlock() */
ngx_free(name);
return err;
}
ngx_int_t
ngx_file_info(u_char *file, ngx_file_info_t *sb)
{
size_t len;
long rc;
u_short *u;
ngx_err_t err;
WIN32_FILE_ATTRIBUTE_DATA fa;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
u = ngx_utf8_to_utf16(utf16, file, &len, 0);
if (u == NULL) {
return NGX_FILE_ERROR;
}
rc = NGX_FILE_ERROR;
if (ngx_win32_check_filename(u, len, 0) != NGX_OK) {
goto failed;
}
rc = GetFileAttributesExW(u, GetFileExInfoStandard, &fa);
sb->dwFileAttributes = fa.dwFileAttributes;
sb->ftCreationTime = fa.ftCreationTime;
sb->ftLastAccessTime = fa.ftLastAccessTime;
sb->ftLastWriteTime = fa.ftLastWriteTime;
sb->nFileSizeHigh = fa.nFileSizeHigh;
sb->nFileSizeLow = fa.nFileSizeLow;
failed:
if (u != utf16) {
err = ngx_errno;
ngx_free(u);
ngx_set_errno(err);
}
return rc;
}
ngx_int_t
ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s)
{
uint64_t intervals;
FILETIME ft;
/* 116444736000000000 is commented in src/os/win32/ngx_time.c */
intervals = s * 10000000 + 116444736000000000;
ft.dwLowDateTime = (DWORD) intervals;
ft.dwHighDateTime = (DWORD) (intervals >> 32);
if (SetFileTime(fd, NULL, NULL, &ft) != 0) {
return NGX_OK;
}
return NGX_ERROR;
}
ngx_int_t
ngx_create_file_mapping(ngx_file_mapping_t *fm)
{
LARGE_INTEGER size;
fm->fd = ngx_open_file(fm->name, NGX_FILE_RDWR, NGX_FILE_TRUNCATE,
NGX_FILE_DEFAULT_ACCESS);
if (fm->fd == NGX_INVALID_FILE) {
ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno,
ngx_open_file_n " \"%s\" failed", fm->name);
return NGX_ERROR;
}
fm->handle = NULL;
size.QuadPart = fm->size;
if (SetFilePointerEx(fm->fd, size, NULL, FILE_BEGIN) == 0) {
ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno,
"SetFilePointerEx(\"%s\", %uz) failed",
fm->name, fm->size);
goto failed;
}
if (SetEndOfFile(fm->fd) == 0) {
ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno,
"SetEndOfFile() \"%s\" failed", fm->name);
goto failed;
}
fm->handle = CreateFileMapping(fm->fd, NULL, PAGE_READWRITE,
(u_long) ((off_t) fm->size >> 32),
(u_long) ((off_t) fm->size & 0xffffffff),
NULL);
if (fm->handle == NULL) {
ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno,
"CreateFileMapping(%s, %uz) failed",
fm->name, fm->size);
goto failed;
}
fm->addr = MapViewOfFile(fm->handle, FILE_MAP_WRITE, 0, 0, 0);
if (fm->addr != NULL) {
return NGX_OK;
}
ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno,
"MapViewOfFile(%uz) of file mapping \"%s\" failed",
fm->size, fm->name);
failed:
if (fm->handle) {
if (CloseHandle(fm->handle) == 0) {
ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno,
"CloseHandle() of file mapping \"%s\" failed",
fm->name);
}
}
if (ngx_close_file(fm->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", fm->name);
}
return NGX_ERROR;
}
void
ngx_close_file_mapping(ngx_file_mapping_t *fm)
{
if (UnmapViewOfFile(fm->addr) == 0) {
ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno,
"UnmapViewOfFile(%p) of file mapping \"%s\" failed",
fm->addr, &fm->name);
}
if (CloseHandle(fm->handle) == 0) {
ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno,
"CloseHandle() of file mapping \"%s\" failed",
&fm->name);
}
if (ngx_close_file(fm->fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", fm->name);
}
}
u_char *
ngx_realpath(u_char *path, u_char *resolved)
{
/* STUB */
return path;
}
size_t
ngx_getcwd(u_char *buf, size_t size)
{
u_char *p;
size_t n;
u_short utf16[NGX_MAX_PATH];
n = GetCurrentDirectoryW(NGX_MAX_PATH, utf16);
if (n == 0) {
return 0;
}
if (n > NGX_MAX_PATH) {
ngx_set_errno(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
p = ngx_utf16_to_utf8(buf, utf16, &size, NULL);
if (p == NULL) {
return 0;
}
if (p != buf) {
ngx_free(p);
ngx_set_errno(ERROR_INSUFFICIENT_BUFFER);
return 0;
}
return size - 1;
}
ngx_int_t
ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir)
{
size_t len;
u_short *u, *p;
ngx_err_t err;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN - 2;
u = ngx_utf8_to_utf16(utf16, name->data, &len, 2);
if (u == NULL) {
return NGX_ERROR;
}
if (ngx_win32_check_filename(u, len, 0) != NGX_OK) {
goto failed;
}
p = &u[len - 1];
*p++ = '/';
*p++ = '*';
*p = '\0';
dir->dir = FindFirstFileW(u, &dir->finddata);
if (dir->dir == INVALID_HANDLE_VALUE) {
goto failed;
}
if (u != utf16) {
ngx_free(u);
}
dir->valid_info = 1;
dir->ready = 1;
dir->name = NULL;
dir->allocated = 0;
return NGX_OK;
failed:
if (u != utf16) {
err = ngx_errno;
ngx_free(u);
ngx_set_errno(err);
}
return NGX_ERROR;
}
ngx_int_t
ngx_read_dir(ngx_dir_t *dir)
{
u_char *name;
size_t len, allocated;
if (dir->ready) {
dir->ready = 0;
goto convert;
}
if (FindNextFileW(dir->dir, &dir->finddata) != 0) {
dir->type = 1;
goto convert;
}
return NGX_ERROR;
convert:
name = dir->name;
len = dir->allocated;
name = ngx_utf16_to_utf8(name, dir->finddata.cFileName, &len, &allocated);
if (name == NULL) {
return NGX_ERROR;
}
if (name != dir->name) {
if (dir->name) {
ngx_free(dir->name);
}
dir->name = name;
dir->allocated = allocated;
}
dir->namelen = len - 1;
return NGX_OK;
}
ngx_int_t
ngx_close_dir(ngx_dir_t *dir)
{
if (dir->name) {
ngx_free(dir->name);
}
if (FindClose(dir->dir) == 0) {
return NGX_ERROR;
}
return NGX_OK;
}
ngx_int_t
ngx_create_dir(u_char *name, ngx_uint_t access)
{
long rc;
size_t len;
u_short *u;
ngx_err_t err;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
u = ngx_utf8_to_utf16(utf16, name, &len, 0);
if (u == NULL) {
return NGX_FILE_ERROR;
}
rc = NGX_FILE_ERROR;
if (ngx_win32_check_filename(u, len, 1) != NGX_OK) {
goto failed;
}
rc = CreateDirectoryW(u, NULL);
failed:
if (u != utf16) {
err = ngx_errno;
ngx_free(u);
ngx_set_errno(err);
}
return rc;
}
ngx_int_t
ngx_delete_dir(u_char *name)
{
long rc;
size_t len;
u_short *u;
ngx_err_t err;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
u = ngx_utf8_to_utf16(utf16, name, &len, 0);
if (u == NULL) {
return NGX_FILE_ERROR;
}
rc = NGX_FILE_ERROR;
if (ngx_win32_check_filename(u, len, 0) != NGX_OK) {
goto failed;
}
rc = RemoveDirectoryW(u);
failed:
if (u != utf16) {
err = ngx_errno;
ngx_free(u);
ngx_set_errno(err);
}
return rc;
}
ngx_int_t
ngx_open_glob(ngx_glob_t *gl)
{
u_char *p;
size_t len;
u_short *u;
ngx_err_t err;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
u = ngx_utf8_to_utf16(utf16, gl->pattern, &len, 0);
if (u == NULL) {
return NGX_ERROR;
}
gl->dir = FindFirstFileW(u, &gl->finddata);
if (gl->dir == INVALID_HANDLE_VALUE) {
err = ngx_errno;
if (u != utf16) {
ngx_free(u);
}
if ((err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
&& gl->test)
{
gl->no_match = 1;
return NGX_OK;
}
ngx_set_errno(err);
return NGX_ERROR;
}
for (p = gl->pattern; *p; p++) {
if (*p == '/') {
gl->last = p + 1 - gl->pattern;
}
}
if (u != utf16) {
ngx_free(u);
}
gl->ready = 1;
return NGX_OK;
}
ngx_int_t
ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name)
{
u_char *p;
size_t len;
ngx_err_t err;
u_char utf8[NGX_UTF8_BUFLEN];
if (gl->no_match) {
return NGX_DONE;
}
if (gl->ready) {
gl->ready = 0;
goto convert;
}
ngx_free(gl->name.data);
gl->name.data = NULL;
if (FindNextFileW(gl->dir, &gl->finddata) != 0) {
goto convert;
}
err = ngx_errno;
if (err == NGX_ENOMOREFILES) {
return NGX_DONE;
}
ngx_log_error(NGX_LOG_ALERT, gl->log, err,
"FindNextFile(%s) failed", gl->pattern);
return NGX_ERROR;
convert:
len = NGX_UTF8_BUFLEN;
p = ngx_utf16_to_utf8(utf8, gl->finddata.cFileName, &len, NULL);
if (p == NULL) {
return NGX_ERROR;
}
gl->name.len = gl->last + len - 1;
gl->name.data = ngx_alloc(gl->name.len + 1, gl->log);
if (gl->name.data == NULL) {
goto failed;
}
ngx_memcpy(gl->name.data, gl->pattern, gl->last);
ngx_cpystrn(gl->name.data + gl->last, p, len);
if (p != utf8) {
ngx_free(p);
}
*name = gl->name;
return NGX_OK;
failed:
if (p != utf8) {
err = ngx_errno;
ngx_free(p);
ngx_set_errno(err);
}
return NGX_ERROR;
}
void
ngx_close_glob(ngx_glob_t *gl)
{
if (gl->name.data) {
ngx_free(gl->name.data);
}
if (gl->dir == INVALID_HANDLE_VALUE) {
return;
}
if (FindClose(gl->dir) == 0) {
ngx_log_error(NGX_LOG_ALERT, gl->log, ngx_errno,
"FindClose(%s) failed", gl->pattern);
}
}
ngx_int_t
ngx_de_info(u_char *name, ngx_dir_t *dir)
{
return NGX_OK;
}
ngx_int_t
ngx_de_link_info(u_char *name, ngx_dir_t *dir)
{
return NGX_OK;
}
ngx_int_t
ngx_read_ahead(ngx_fd_t fd, size_t n)
{
return ~NGX_FILE_ERROR;
}
ngx_int_t
ngx_directio_on(ngx_fd_t fd)
{
return ~NGX_FILE_ERROR;
}
ngx_int_t
ngx_directio_off(ngx_fd_t fd)
{
return ~NGX_FILE_ERROR;
}
size_t
ngx_fs_bsize(u_char *name)
{
u_long sc, bs, nfree, ncl;
size_t len;
u_short *u;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
u = ngx_utf8_to_utf16(utf16, name, &len, 0);
if (u == NULL) {
return 512;
}
if (GetDiskFreeSpaceW(u, &sc, &bs, &nfree, &ncl) == 0) {
if (u != utf16) {
ngx_free(u);
}
return 512;
}
if (u != utf16) {
ngx_free(u);
}
return sc * bs;
}
off_t
ngx_fs_available(u_char *name)
{
size_t len;
u_short *u;
ULARGE_INTEGER navail;
u_short utf16[NGX_UTF16_BUFLEN];
len = NGX_UTF16_BUFLEN;
u = ngx_utf8_to_utf16(utf16, name, &len, 0);
if (u == NULL) {
return NGX_MAX_OFF_T_VALUE;
}
if (GetDiskFreeSpaceExW(u, &navail, NULL, NULL) == 0) {
if (u != utf16) {
ngx_free(u);
}
return NGX_MAX_OFF_T_VALUE;
}
if (u != utf16) {
ngx_free(u);
}
return (off_t) navail.QuadPart;
}
static ngx_int_t
ngx_win32_check_filename(u_short *u, size_t len, ngx_uint_t dirname)
{
u_long n;
u_short *lu, *p, *slash, ch;
ngx_err_t err;
enum {
sw_start = 0,
sw_normal,
sw_after_slash,
sw_after_colon,
sw_after_dot
} state;
/* check for NTFS streams (":"), trailing dots and spaces */
lu = NULL;
slash = NULL;
state = sw_start;
#if (NGX_SUPPRESS_WARN)
ch = 0;
#endif
for (p = u; *p; p++) {
ch = *p;
switch (state) {
case sw_start:
/*
* skip till first "/" to allow paths starting with drive and
* relative path, like "c:html/"
*/
if (ch == '/' || ch == '\\') {
state = sw_after_slash;
slash = p;
}
break;
case sw_normal:
if (ch == ':') {
state = sw_after_colon;
break;
}
if (ch == '.' || ch == ' ') {
state = sw_after_dot;
break;
}
if (ch == '/' || ch == '\\') {
state = sw_after_slash;
slash = p;
break;
}
break;
case sw_after_slash:
if (ch == '/' || ch == '\\') {
break;
}
if (ch == '.') {
break;
}
if (ch == ':') {
state = sw_after_colon;
break;
}
state = sw_normal;
break;
case sw_after_colon:
if (ch == '/' || ch == '\\') {
state = sw_after_slash;
slash = p;
break;
}
goto invalid;
case sw_after_dot:
if (ch == '/' || ch == '\\') {
goto invalid;
}
if (ch == ':') {
goto invalid;
}
if (ch == '.' || ch == ' ') {
break;
}
state = sw_normal;
break;
}
}
if (state == sw_after_dot) {
goto invalid;
}
if (dirname && slash) {
ch = *slash;
*slash = '\0';
len = slash - u + 1;
}
/* check if long name match */
lu = malloc(len * 2);
if (lu == NULL) {
return NGX_ERROR;
}
n = GetLongPathNameW(u, lu, len);
if (n == 0) {
if (dirname && slash && ngx_errno == NGX_ENOENT) {
ngx_set_errno(NGX_ENOPATH);
}
goto failed;
}
if (n != len - 1 || _wcsicmp(u, lu) != 0) {
goto invalid;
}
if (dirname && slash) {
*slash = ch;
}
ngx_free(lu);
return NGX_OK;
invalid:
ngx_set_errno(NGX_ENOENT);
failed:
if (dirname && slash) {
*slash = ch;
}
if (lu) {
err = ngx_errno;
ngx_free(lu);
ngx_set_errno(err);
}
return NGX_ERROR;
}
static u_short *
ngx_utf8_to_utf16(u_short *utf16, u_char *utf8, size_t *len, size_t reserved)
{
u_char *p;
u_short *u, *last;
uint32_t n;
p = utf8;
u = utf16;
last = utf16 + *len;
while (u < last) {
if (*p < 0x80) {
*u++ = (u_short) *p;
if (*p == 0) {
*len = u - utf16;
return utf16;
}
p++;
continue;
}
if (u + 1 == last) {
*len = u - utf16;
break;
}
n = ngx_utf8_decode(&p, 4);
if (n > 0x10ffff) {
ngx_set_errno(NGX_EILSEQ);
return NULL;
}
if (n > 0xffff) {
n -= 0x10000;
*u++ = (u_short) (0xd800 + (n >> 10));
*u++ = (u_short) (0xdc00 + (n & 0x03ff));
continue;
}
*u++ = (u_short) n;
}
/* the given buffer is not enough, allocate a new one */
u = malloc(((p - utf8) + ngx_strlen(p) + 1 + reserved) * sizeof(u_short));
if (u == NULL) {
return NULL;
}
ngx_memcpy(u, utf16, *len * 2);
utf16 = u;
u += *len;
for ( ;; ) {
if (*p < 0x80) {
*u++ = (u_short) *p;
if (*p == 0) {
*len = u - utf16;
return utf16;
}
p++;
continue;
}
n = ngx_utf8_decode(&p, 4);
if (n > 0x10ffff) {
ngx_free(utf16);
ngx_set_errno(NGX_EILSEQ);
return NULL;
}
if (n > 0xffff) {
n -= 0x10000;
*u++ = (u_short) (0xd800 + (n >> 10));
*u++ = (u_short) (0xdc00 + (n & 0x03ff));
continue;
}
*u++ = (u_short) n;
}
/* unreachable */
}
static u_char *
ngx_utf16_to_utf8(u_char *utf8, u_short *utf16, size_t *len, size_t *allocated)
{
u_char *p, *last;
u_short *u, *j;
uint32_t n;
u = utf16;
p = utf8;
last = utf8 + *len;
while (p < last) {
if (*u < 0x80) {
*p++ = (u_char) *u;
if (*u == 0) {
*len = p - utf8;
return utf8;
}
u++;
continue;
}
if (p >= last - 4) {
*len = p - utf8;
break;
}
n = ngx_utf16_decode(&u, 2);
if (n > 0x10ffff) {
ngx_set_errno(NGX_EILSEQ);
return NULL;
}
if (n >= 0x10000) {
*p++ = (u_char) (0xf0 + (n >> 18));
*p++ = (u_char) (0x80 + ((n >> 12) & 0x3f));
*p++ = (u_char) (0x80 + ((n >> 6) & 0x3f));
*p++ = (u_char) (0x80 + (n & 0x3f));
continue;
}
if (n >= 0x0800) {
*p++ = (u_char) (0xe0 + (n >> 12));
*p++ = (u_char) (0x80 + ((n >> 6) & 0x3f));
*p++ = (u_char) (0x80 + (n & 0x3f));
continue;
}
*p++ = (u_char) (0xc0 + (n >> 6));
*p++ = (u_char) (0x80 + (n & 0x3f));
}
/* the given buffer is not enough, allocate a new one */
for (j = u; *j; j++) { /* void */ }
p = malloc((j - utf16) * 4 + 1);
if (p == NULL) {
return NULL;
}
if (allocated) {
*allocated = (j - utf16) * 4 + 1;
}
ngx_memcpy(p, utf8, *len);
utf8 = p;
p += *len;
for ( ;; ) {
if (*u < 0x80) {
*p++ = (u_char) *u;
if (*u == 0) {
*len = p - utf8;
return utf8;
}
u++;
continue;
}
n = ngx_utf16_decode(&u, 2);
if (n > 0x10ffff) {
ngx_free(utf8);
ngx_set_errno(NGX_EILSEQ);
return NULL;
}
if (n >= 0x10000) {
*p++ = (u_char) (0xf0 + (n >> 18));
*p++ = (u_char) (0x80 + ((n >> 12) & 0x3f));
*p++ = (u_char) (0x80 + ((n >> 6) & 0x3f));
*p++ = (u_char) (0x80 + (n & 0x3f));
continue;
}
if (n >= 0x0800) {
*p++ = (u_char) (0xe0 + (n >> 12));
*p++ = (u_char) (0x80 + ((n >> 6) & 0x3f));
*p++ = (u_char) (0x80 + (n & 0x3f));
continue;
}
*p++ = (u_char) (0xc0 + (n >> 6));
*p++ = (u_char) (0x80 + (n & 0x3f));
}
/* unreachable */
}
/*
* ngx_utf16_decode() decodes one or two UTF-16 code units
* the return values:
* 0x80 - 0x10ffff valid character
* 0x110000 - 0xfffffffd invalid sequence
* 0xfffffffe incomplete sequence
* 0xffffffff error
*/
uint32_t
ngx_utf16_decode(u_short **u, size_t n)
{
uint32_t k, m;
k = **u;
if (k < 0xd800 || k > 0xdfff) {
(*u)++;
return k;
}
if (k > 0xdbff) {
(*u)++;
return 0xffffffff;
}
if (n < 2) {
return 0xfffffffe;
}
(*u)++;
m = *(*u)++;
if (m < 0xdc00 || m > 0xdfff) {
return 0xffffffff;
}
return 0x10000 + ((k - 0xd800) << 10) + (m - 0xdc00);
}
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