mirror of
https://github.com/nginx/nginx.git
synced 2025-06-07 17:52:38 +08:00
625 lines
12 KiB
C
625 lines
12 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#define NGX_UTF16_BUFLEN 256
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static u_short *ngx_utf8_to_utf16(u_short *utf16, u_char *utf8, size_t *len);
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/* FILE_FLAG_BACKUP_SEMANTICS allows to obtain a handle to a directory */
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ngx_fd_t
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ngx_open_file(u_char *name, u_long mode, u_long create, u_long access)
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{
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size_t len;
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u_long n;
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u_short *u, *lu;
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ngx_fd_t fd;
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ngx_err_t err;
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u_short utf16[NGX_UTF16_BUFLEN];
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len = NGX_UTF16_BUFLEN;
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u = ngx_utf8_to_utf16(utf16, name, &len);
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if (u == NULL) {
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return INVALID_HANDLE_VALUE;
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}
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fd = INVALID_HANDLE_VALUE;
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lu = NULL;
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if (create == NGX_FILE_OPEN) {
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lu = malloc(len * 2);
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if (lu == NULL) {
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goto failed;
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}
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n = GetLongPathNameW(u, lu, len);
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if (n == 0) {
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goto failed;
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}
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if (n != len - 1 || _wcsicmp(u, lu) != 0) {
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ngx_set_errno(NGX_ENOENT);
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goto failed;
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}
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}
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fd = CreateFileW(u, mode,
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FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
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NULL, create, FILE_FLAG_BACKUP_SEMANTICS, NULL);
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failed:
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err = ngx_errno;
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if (lu) {
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ngx_free(lu);
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}
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if (u != utf16) {
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ngx_free(u);
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}
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ngx_set_errno(err);
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return fd;
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}
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ssize_t
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ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset)
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{
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u_long n;
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ngx_err_t err;
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OVERLAPPED ovlp, *povlp;
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ovlp.Internal = 0;
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ovlp.InternalHigh = 0;
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ovlp.Offset = (u_long) offset;
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ovlp.OffsetHigh = (u_long) (offset >> 32);
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ovlp.hEvent = NULL;
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povlp = &ovlp;
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if (ReadFile(file->fd, buf, size, &n, povlp) == 0) {
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err = ngx_errno;
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if (err == ERROR_HANDLE_EOF) {
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return 0;
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}
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ngx_log_error(NGX_LOG_ERR, file->log, err,
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"ReadFile() \"%s\" failed", file->name.data);
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return NGX_ERROR;
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}
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file->offset += n;
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return n;
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}
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ssize_t
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ngx_write_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset)
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{
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u_long n;
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OVERLAPPED ovlp, *povlp;
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ovlp.Internal = 0;
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ovlp.InternalHigh = 0;
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ovlp.Offset = (u_long) offset;
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ovlp.OffsetHigh = (u_long) (offset >> 32);
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ovlp.hEvent = NULL;
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povlp = &ovlp;
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if (WriteFile(file->fd, buf, size, &n, povlp) == 0) {
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ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno,
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"WriteFile() \"%s\" failed", file->name.data);
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return NGX_ERROR;
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}
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if (n != size) {
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ngx_log_error(NGX_LOG_CRIT, file->log, 0,
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"WriteFile() \"%s\" has written only %ul of %uz",
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file->name.data, n, size);
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return NGX_ERROR;
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}
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file->offset += n;
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return n;
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}
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ssize_t
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ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset,
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ngx_pool_t *pool)
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{
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u_char *buf, *prev;
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size_t size;
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ssize_t total, n;
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total = 0;
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while (cl) {
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buf = cl->buf->pos;
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prev = buf;
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size = 0;
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/* coalesce the neighbouring bufs */
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while (cl && prev == cl->buf->pos) {
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size += cl->buf->last - cl->buf->pos;
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prev = cl->buf->last;
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cl = cl->next;
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}
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n = ngx_write_file(file, buf, size, offset);
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if (n == NGX_ERROR) {
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return NGX_ERROR;
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}
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total += n;
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offset += n;
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}
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return total;
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}
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ssize_t
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ngx_read_fd(ngx_fd_t fd, void *buf, size_t size)
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{
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u_long n;
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if (ReadFile(fd, buf, size, &n, NULL) != 0) {
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return (size_t) n;
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}
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return -1;
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}
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ssize_t
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ngx_write_fd(ngx_fd_t fd, void *buf, size_t size)
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{
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u_long n;
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if (WriteFile(fd, buf, size, &n, NULL) != 0) {
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return (size_t) n;
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}
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return -1;
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}
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ssize_t
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ngx_write_console(ngx_fd_t fd, void *buf, size_t size)
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{
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u_long n;
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(void) CharToOemBuff(buf, buf, size);
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if (WriteFile(fd, buf, size, &n, NULL) != 0) {
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return (size_t) n;
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}
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return -1;
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}
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ngx_err_t
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ngx_win32_rename_file(ngx_str_t *from, ngx_str_t *to, ngx_log_t *log)
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{
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u_char *name;
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ngx_err_t err;
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ngx_uint_t collision;
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ngx_atomic_uint_t num;
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name = ngx_alloc(to->len + 1 + 10 + 1 + sizeof("DELETE"), log);
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if (name == NULL) {
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return NGX_ENOMEM;
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}
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ngx_memcpy(name, to->data, to->len);
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collision = 0;
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/* mutex_lock() (per cache or single ?) */
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for ( ;; ) {
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num = ngx_next_temp_number(collision);
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ngx_sprintf(name + to->len, ".%0muA.DELETE%Z", num);
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if (MoveFile((const char *) to->data, (const char *) name) != 0) {
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break;
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}
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collision = 1;
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ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
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"MoveFile() \"%s\" to \"%s\" failed", to->data, name);
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}
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if (MoveFile((const char *) from->data, (const char *) to->data) == 0) {
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err = ngx_errno;
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} else {
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err = 0;
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}
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if (DeleteFile((const char *) name) == 0) {
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ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
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"DeleteFile() \"%s\" failed", name);
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}
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/* mutex_unlock() */
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ngx_free(name);
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return err;
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}
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ngx_int_t
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ngx_file_info(u_char *file, ngx_file_info_t *sb)
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{
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size_t len;
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long rc;
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u_short *u;
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ngx_err_t err;
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WIN32_FILE_ATTRIBUTE_DATA fa;
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u_short utf16[NGX_UTF16_BUFLEN];
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len = NGX_UTF16_BUFLEN;
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u = ngx_utf8_to_utf16(utf16, file, &len);
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if (u == NULL) {
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return NGX_FILE_ERROR;
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}
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rc = GetFileAttributesExW(u, GetFileExInfoStandard, &fa);
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if (u != utf16) {
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err = ngx_errno;
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ngx_free(u);
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ngx_set_errno(err);
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}
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sb->dwFileAttributes = fa.dwFileAttributes;
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sb->ftCreationTime = fa.ftCreationTime;
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sb->ftLastAccessTime = fa.ftLastAccessTime;
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sb->ftLastWriteTime = fa.ftLastWriteTime;
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sb->nFileSizeHigh = fa.nFileSizeHigh;
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sb->nFileSizeLow = fa.nFileSizeLow;
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return rc;
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}
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ngx_int_t
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ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s)
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{
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uint64_t intervals;
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FILETIME ft;
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/* 116444736000000000 is commented in src/os/win32/ngx_time.c */
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intervals = s * 10000000 + 116444736000000000;
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ft.dwLowDateTime = (DWORD) intervals;
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ft.dwHighDateTime = (DWORD) (intervals >> 32);
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if (SetFileTime(fd, NULL, NULL, &ft) != 0) {
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return NGX_OK;
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}
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return NGX_ERROR;
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}
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char *
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ngx_realpath(u_char *path, u_char *resolved)
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{
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/* STUB */
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return (char *) path;
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}
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ngx_int_t
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ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir)
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{
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ngx_cpystrn(name->data + name->len, NGX_DIR_MASK, NGX_DIR_MASK_LEN + 1);
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dir->dir = FindFirstFile((const char *) name->data, &dir->finddata);
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if (dir->dir == INVALID_HANDLE_VALUE) {
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return NGX_ERROR;
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}
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dir->valid_info = 1;
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dir->ready = 1;
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return NGX_OK;
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}
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ngx_int_t
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ngx_read_dir(ngx_dir_t *dir)
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{
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if (dir->ready) {
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dir->ready = 0;
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return NGX_OK;
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}
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if (FindNextFile(dir->dir, &dir->finddata) != 0) {
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dir->type = 1;
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return NGX_OK;
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}
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return NGX_ERROR;
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}
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ngx_int_t
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ngx_open_glob(ngx_glob_t *gl)
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{
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u_char *p;
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size_t len;
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ngx_err_t err;
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gl->dir = FindFirstFile((const char *) gl->pattern, &gl->finddata);
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if (gl->dir == INVALID_HANDLE_VALUE) {
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err = ngx_errno;
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if ((err == ERROR_FILE_NOT_FOUND || err == ERROR_PATH_NOT_FOUND)
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&& gl->test)
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{
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gl->no_match = 1;
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return NGX_OK;
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}
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return NGX_ERROR;
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}
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for (p = gl->pattern; *p; p++) {
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if (*p == '/') {
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gl->last = p + 1 - gl->pattern;
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}
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}
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len = ngx_strlen(gl->finddata.cFileName);
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gl->name.len = gl->last + len;
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gl->name.data = ngx_alloc(gl->name.len + 1, gl->log);
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if (gl->name.data == NULL) {
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return NGX_ERROR;
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}
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ngx_memcpy(gl->name.data, gl->pattern, gl->last);
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ngx_cpystrn(gl->name.data + gl->last, (u_char *) gl->finddata.cFileName,
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len + 1);
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gl->ready = 1;
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return NGX_OK;
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}
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ngx_int_t
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ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name)
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{
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size_t len;
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ngx_err_t err;
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if (gl->no_match) {
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return NGX_DONE;
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}
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if (gl->ready) {
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*name = gl->name;
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gl->ready = 0;
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return NGX_OK;
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}
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ngx_free(gl->name.data);
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gl->name.data = NULL;
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if (FindNextFile(gl->dir, &gl->finddata) != 0) {
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len = ngx_strlen(gl->finddata.cFileName);
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gl->name.len = gl->last + len;
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gl->name.data = ngx_alloc(gl->name.len + 1, gl->log);
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if (gl->name.data == NULL) {
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return NGX_ERROR;
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}
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ngx_memcpy(gl->name.data, gl->pattern, gl->last);
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ngx_cpystrn(gl->name.data + gl->last, (u_char *) gl->finddata.cFileName,
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len + 1);
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*name = gl->name;
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return NGX_OK;
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}
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err = ngx_errno;
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if (err == NGX_ENOMOREFILES) {
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return NGX_DONE;
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}
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ngx_log_error(NGX_LOG_ALERT, gl->log, err,
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"FindNextFile(%s) failed", gl->pattern);
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return NGX_ERROR;
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}
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void
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ngx_close_glob(ngx_glob_t *gl)
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{
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if (gl->name.data) {
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ngx_free(gl->name.data);
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}
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if (gl->dir == INVALID_HANDLE_VALUE) {
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return;
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}
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if (FindClose(gl->dir) == 0) {
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ngx_log_error(NGX_LOG_ALERT, gl->log, ngx_errno,
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"FindClose(%s) failed", gl->pattern);
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}
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}
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ngx_int_t
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ngx_de_info(u_char *name, ngx_dir_t *dir)
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{
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return NGX_OK;
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}
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ngx_int_t
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ngx_de_link_info(u_char *name, ngx_dir_t *dir)
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{
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return NGX_OK;
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}
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ngx_int_t
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ngx_read_ahead(ngx_fd_t fd, size_t n)
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{
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return ~NGX_FILE_ERROR;
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}
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ngx_int_t
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ngx_directio_on(ngx_fd_t fd)
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{
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return ~NGX_FILE_ERROR;
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}
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ngx_int_t
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ngx_directio_off(ngx_fd_t fd)
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{
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return ~NGX_FILE_ERROR;
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}
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size_t
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ngx_fs_bsize(u_char *name)
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{
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u_char root[4];
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u_long sc, bs, nfree, ncl;
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if (name[2] == ':') {
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ngx_cpystrn(root, name, 4);
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name = root;
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}
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if (GetDiskFreeSpace((const char *) name, &sc, &bs, &nfree, &ncl) == 0) {
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return 512;
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}
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return sc * bs;
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}
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static u_short *
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ngx_utf8_to_utf16(u_short *utf16, u_char *utf8, size_t *len)
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{
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u_char *p;
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u_short *u, *last;
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uint32_t n;
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p = utf8;
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u = utf16;
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last = utf16 + *len;
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while (u < last) {
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if (*p < 0x80) {
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*u++ = (u_short) *p;
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if (*p == 0) {
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*len = u - utf16;
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return utf16;
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}
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p++;
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continue;
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}
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n = ngx_utf8_decode(&p, 4);
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if (n > 0xffff) {
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ngx_set_errno(NGX_EILSEQ);
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return NULL;
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}
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*u++ = (u_short) n;
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}
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/* the given buffer is not enough, allocate a new one */
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u = malloc(((p - utf8) + ngx_strlen(p) + 1) * sizeof(u_short));
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if (u == NULL) {
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return NULL;
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}
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ngx_memcpy(u, utf16, *len * 2);
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utf16 = u;
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u += *len;
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for ( ;; ) {
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if (*p < 0x80) {
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*u++ = (u_short) *p;
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|
|
if (*p == 0) {
|
|
*len = u - utf16;
|
|
return utf16;
|
|
}
|
|
|
|
p++;
|
|
|
|
continue;
|
|
}
|
|
|
|
n = ngx_utf8_decode(&p, 4);
|
|
|
|
if (n > 0xffff) {
|
|
free(utf16);
|
|
ngx_set_errno(NGX_EILSEQ);
|
|
return NULL;
|
|
}
|
|
|
|
*u++ = (u_short) n;
|
|
}
|
|
|
|
/* unreachable */
|
|
}
|