One Level Up
Top Level
src/os/win32/ngx_files.c - nginx source code
Data types defined
Functions defined
Macros defined
Source code
- #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);
- 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;
-
- 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;
-
- 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:
-
- 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;
-
- 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)
- {
-
- 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;
-
- 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:
-
- 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;
- }
-
- 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;
- }
-
- 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;
- }
-
- }
- 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));
- }
-
- for (j = u; *j; j++) { }
- 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));
- }
-
- }
- 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);
- }
One Level Up
Top Level