static void
ngx_http_file_cache_loader(void *data)
{
ngx_http_file_cache_t *cache = data;
ngx_tree_ctx_t tree;
// ???
if (!cache->sh->cold || cache->sh->loading) {
return;
}
if (!ngx_atomic_cmp_set(&cache->sh->loading, 0, ngx_pid)) {
return;
}
ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0,
"http file cache loader");
tree.init_handler = NULL;
tree.file_handler = ngx_http_file_cache_manage_file;
tree.pre_tree_handler = ngx_http_file_cache_noop;
tree.post_tree_handler = ngx_http_file_cache_noop;
tree.spec_handler = ngx_http_file_cache_delete_file;
tree.data = cache;
tree.alloc = 0;
tree.log = ngx_cycle->log;
cache->last = ngx_current_msec; // 更新缓存最后被访问的时间
cache->files = 0;
if (ngx_walk_tree(&tree, &cache->path->name) == NGX_ABORT) {
cache->sh->loading = 0;
return;
}
cache->sh->cold = 0;
cache->sh->loading = 0;
ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0,
"http file cache: %V %.3fM, bsize: %uz",
&cache->path->name,
((double) cache->sh->size * cache->bsize) / (1024 * 1024),
cache->bsize);
}
static ngx_int_t
ngx_http_dav_delete_path(ngx_http_request_t *r, ngx_str_t *path, ngx_uint_t dir)
{
char *failed;
ngx_tree_ctx_t tree;
if (dir) {
tree.init_handler = NULL;
tree.file_handler = ngx_http_dav_delete_file;
tree.pre_tree_handler = ngx_http_dav_noop;
tree.post_tree_handler = ngx_http_dav_delete_dir;
tree.spec_handler = ngx_http_dav_delete_file;
tree.data = NULL;
tree.alloc = 0;
tree.log = r->connection->log;
/* TODO: 207 */
if (ngx_walk_tree(&tree, path) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (ngx_delete_dir(path->data) != NGX_FILE_ERROR) {
return NGX_OK;
}
failed = ngx_delete_dir_n;
} else {
if (ngx_delete_file(path->data) != NGX_FILE_ERROR) {
return NGX_OK;
}
failed = ngx_delete_file_n;
}
return ngx_http_dav_error(r->connection->log, ngx_errno,
NGX_HTTP_NOT_FOUND, failed, path->data);
}
static ngx_int_t
ngx_http_dav_copy_move_handler(ngx_http_request_t *r)
{
u_char *p, *host, *last, ch;
size_t len, root;
ngx_err_t err;
ngx_int_t rc, depth;
ngx_uint_t overwrite, slash, dir, flags;
ngx_str_t path, uri, duri, args;
ngx_tree_ctx_t tree;
ngx_copy_file_t cf;
ngx_file_info_t fi;
ngx_table_elt_t *dest, *over;
ngx_ext_rename_file_t ext;
ngx_http_dav_copy_ctx_t copy;
ngx_http_dav_loc_conf_t *dlcf;
if (r->headers_in.content_length_n > 0) {
return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE;
}
dest = r->headers_in.destination;
if (dest == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"client sent no \"Destination\" header");
return NGX_HTTP_BAD_REQUEST;
}
p = dest->value.data;
/* there is always '\0' even after empty header value */
if (p[0] == '/') {
last = p + dest->value.len;
goto destination_done;
}
len = r->headers_in.server.len;
if (len == 0) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"client sent no \"Host\" header");
return NGX_HTTP_BAD_REQUEST;
}
#if (NGX_HTTP_SSL)
if (r->connection->ssl) {
if (ngx_strncmp(dest->value.data, "https://", sizeof("https://") - 1)
!= 0)
{
goto invalid_destination;
}
host = dest->value.data + sizeof("https://") - 1;
} else
#endif
{
if (ngx_strncmp(dest->value.data, "http://", sizeof("http://") - 1)
!= 0)
{
goto invalid_destination;
}
host = dest->value.data + sizeof("http://") - 1;
}
if (ngx_strncmp(host, r->headers_in.server.data, len) != 0) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"\"Destination\" URI \"%V\" is handled by "
"different repository than the source URI",
&dest->value);
return NGX_HTTP_BAD_REQUEST;
}
last = dest->value.data + dest->value.len;
for (p = host + len; p < last; p++) {
if (*p == '/') {
goto destination_done;
}
}
invalid_destination:
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"client sent invalid \"Destination\" header: \"%V\"",
&dest->value);
return NGX_HTTP_BAD_REQUEST;
destination_done:
duri.len = last - p;
duri.data = p;
flags = NGX_HTTP_LOG_UNSAFE;
if (ngx_http_parse_unsafe_uri(r, &duri, &args, &flags) != NGX_OK) {
goto invalid_destination;
}
if ((r->uri.data[r->uri.len - 1] == '/' && *(last - 1) != '/')
|| (r->uri.data[r->uri.len - 1] != '/' && *(last - 1) == '/'))
{
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"both URI \"%V\" and \"Destination\" URI \"%V\" "
"should be either collections or non-collections",
&r->uri, &dest->value);
return NGX_HTTP_CONFLICT;
}
depth = ngx_http_dav_depth(r, NGX_HTTP_DAV_INFINITY_DEPTH);
if (depth != NGX_HTTP_DAV_INFINITY_DEPTH) {
if (r->method == NGX_HTTP_COPY) {
if (depth != 0) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"\"Depth\" header must be 0 or infinity");
return NGX_HTTP_BAD_REQUEST;
}
} else {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"\"Depth\" header must be infinity");
return NGX_HTTP_BAD_REQUEST;
}
}
over = r->headers_in.overwrite;
if (over) {
if (over->value.len == 1) {
ch = over->value.data[0];
if (ch == 'T' || ch == 't') {
overwrite = 1;
goto overwrite_done;
}
if (ch == 'F' || ch == 'f') {
overwrite = 0;
goto overwrite_done;
}
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"client sent invalid \"Overwrite\" header: \"%V\"",
&over->value);
return NGX_HTTP_BAD_REQUEST;
}
overwrite = 1;
overwrite_done:
ngx_http_map_uri_to_path(r, &path, &root, 0);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http copy from: \"%s\"", path.data);
uri = r->uri;
r->uri = duri;
ngx_http_map_uri_to_path(r, ©.path, &root, 0);
r->uri = uri;
copy.path.len--; /* omit "\0" */
if (copy.path.data[copy.path.len - 1] == '/') {
slash = 1;
copy.path.len--;
copy.path.data[copy.path.len] = '\0';
} else {
slash = 0;
}
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http copy to: \"%s\"", copy.path.data);
if (ngx_link_info(copy.path.data, &fi) == NGX_FILE_ERROR) {
err = ngx_errno;
if (err != NGX_ENOENT) {
return ngx_http_dav_error(r->connection->log, err,
NGX_HTTP_NOT_FOUND, ngx_link_info_n,
copy.path.data);
}
/* destination does not exist */
overwrite = 0;
dir = 0;
} else {
/* destination exists */
if (ngx_is_dir(&fi) && !slash) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"\"%V\" could not be %Ved to collection \"%V\"",
&r->uri, &r->method_name, &dest->value);
return NGX_HTTP_CONFLICT;
}
if (!overwrite) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_EEXIST,
"\"%s\" could not be created", copy.path.data);
return NGX_HTTP_PRECONDITION_FAILED;
}
dir = ngx_is_dir(&fi);
}
if (ngx_link_info(path.data, &fi) == NGX_FILE_ERROR) {
return ngx_http_dav_error(r->connection->log, ngx_errno,
NGX_HTTP_NOT_FOUND, ngx_link_info_n,
path.data);
}
if (ngx_is_dir(&fi)) {
if (r->uri.data[r->uri.len - 1] != '/') {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"\"%V\" is collection", &r->uri);
return NGX_HTTP_BAD_REQUEST;
}
if (overwrite) {
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http delete: \"%s\"", copy.path.data);
rc = ngx_http_dav_delete_path(r, ©.path, dir);
if (rc != NGX_OK) {
return rc;
}
}
}
if (ngx_is_dir(&fi)) {
path.len -= 2; /* omit "/\0" */
if (r->method == NGX_HTTP_MOVE) {
if (ngx_rename_file(path.data, copy.path.data) != NGX_FILE_ERROR) {
return NGX_HTTP_CREATED;
}
}
if (ngx_create_dir(copy.path.data, ngx_file_access(&fi))
== NGX_FILE_ERROR)
{
return ngx_http_dav_error(r->connection->log, ngx_errno,
NGX_HTTP_NOT_FOUND,
ngx_create_dir_n, copy.path.data);
}
copy.len = path.len;
tree.init_handler = NULL;
tree.file_handler = ngx_http_dav_copy_tree_file;
tree.pre_tree_handler = ngx_http_dav_copy_dir;
tree.post_tree_handler = ngx_http_dav_copy_dir_time;
tree.spec_handler = ngx_http_dav_noop;
tree.data = ©
tree.alloc = 0;
tree.log = r->connection->log;
if (ngx_walk_tree(&tree, &path) == NGX_OK) {
if (r->method == NGX_HTTP_MOVE) {
rc = ngx_http_dav_delete_path(r, &path, 1);
if (rc != NGX_OK) {
return rc;
}
}
return NGX_HTTP_CREATED;
}
} else {
if (r->method == NGX_HTTP_MOVE) {
dlcf = ngx_http_get_module_loc_conf(r, ngx_http_dav_module);
ext.access = 0;
ext.path_access = dlcf->access;
ext.time = -1;
ext.create_path = 1;
ext.delete_file = 0;
ext.log = r->connection->log;
if (ngx_ext_rename_file(&path, ©.path, &ext) == NGX_OK) {
return NGX_HTTP_NO_CONTENT;
}
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
dlcf = ngx_http_get_module_loc_conf(r, ngx_http_dav_module);
cf.size = ngx_file_size(&fi);
cf.buf_size = 0;
cf.access = dlcf->access;
cf.time = ngx_file_mtime(&fi);
cf.log = r->connection->log;
if (ngx_copy_file(path.data, copy.path.data, &cf) == NGX_OK) {
return NGX_HTTP_NO_CONTENT;
}
}
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_int_t
ngx_walk_tree(ngx_tree_ctx_t *ctx, ngx_str_t *tree)
{
void *data, *prev;
u_char *p, *name;
size_t len;
ngx_int_t rc;
ngx_err_t err;
ngx_str_t file, buf;
ngx_dir_t dir;
ngx_str_null(&buf);
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"walk tree \"%V\"", tree);
if (ngx_open_dir(tree, &dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_open_dir_n " \"%s\" failed", tree->data);
return NGX_ERROR;
}
prev = ctx->data;
if (ctx->alloc) {
data = ngx_alloc(ctx->alloc, ctx->log);
if (data == NULL) {
goto failed;
}
if (ctx->init_handler(data, prev) == NGX_ABORT) {
goto failed;
}
ctx->data = data;
} else {
data = NULL;
}
for ( ;; ) {
ngx_set_errno(0);
if (ngx_read_dir(&dir) == NGX_ERROR) {
err = ngx_errno;
if (err == NGX_ENOMOREFILES) {
rc = NGX_OK;
} else {
ngx_log_error(NGX_LOG_CRIT, ctx->log, err,
ngx_read_dir_n " \"%s\" failed", tree->data);
rc = NGX_ERROR;
}
goto done;
}
len = ngx_de_namelen(&dir);
name = ngx_de_name(&dir);
ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"tree name %uz:\"%s\"", len, name);
if (len == 1 && name[0] == '.') {
continue;
}
if (len == 2 && name[0] == '.' && name[1] == '.') {
continue;
}
file.len = tree->len + 1 + len;
if (file.len + NGX_DIR_MASK_LEN > buf.len) {
if (buf.len) {
ngx_free(buf.data);
}
buf.len = tree->len + 1 + len + NGX_DIR_MASK_LEN;
buf.data = ngx_alloc(buf.len + 1, ctx->log);
if (buf.data == NULL) {
goto failed;
}
}
p = ngx_cpymem(buf.data, tree->data, tree->len);
*p++ = '/';
ngx_memcpy(p, name, len + 1);
file.data = buf.data;
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"tree path \"%s\"", file.data);
if (!dir.valid_info) {
if (ngx_de_info(file.data, &dir) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_de_info_n " \"%s\" failed", file.data);
continue;
}
}
if (ngx_de_is_file(&dir)) {
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"tree file \"%s\"", file.data);
ctx->size = ngx_de_size(&dir);
ctx->fs_size = ngx_de_fs_size(&dir);
ctx->access = ngx_de_access(&dir);
ctx->mtime = ngx_de_mtime(&dir);
if (ctx->file_handler(ctx, &file) == NGX_ABORT) {
goto failed;
}
} else if (ngx_de_is_dir(&dir)) {
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"tree enter dir \"%s\"", file.data);
ctx->access = ngx_de_access(&dir);
ctx->mtime = ngx_de_mtime(&dir);
rc = ctx->pre_tree_handler(ctx, &file);
if (rc == NGX_ABORT) {
goto failed;
}
if (rc == NGX_DECLINED) {
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"tree skip dir \"%s\"", file.data);
continue;
}
if (ngx_walk_tree(ctx, &file) == NGX_ABORT) {
goto failed;
}
ctx->access = ngx_de_access(&dir);
ctx->mtime = ngx_de_mtime(&dir);
if (ctx->post_tree_handler(ctx, &file) == NGX_ABORT) {
goto failed;
}
} else {
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0,
"tree special \"%s\"", file.data);
if (ctx->spec_handler(ctx, &file) == NGX_ABORT) {
goto failed;
}
}
}
failed:
rc = NGX_ABORT;
done:
if (buf.len) {
ngx_free(buf.data);
}
if (data) {
ngx_free(data);
ctx->data = prev;
}
if (ngx_close_dir(&dir) == NGX_ERROR) {
ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno,
ngx_close_dir_n " \"%s\" failed", tree->data);
}
return rc;
}