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nginx/src/http/modules/ngx_http_dav_module.c

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/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#define NGX_HTTP_DAV_COPY_BLOCK 65536
#define NGX_HTTP_DAV_OFF 2
#define NGX_HTTP_DAV_NO_DEPTH -3
#define NGX_HTTP_DAV_INVALID_DEPTH -2
#define NGX_HTTP_DAV_INFINITY_DEPTH -1
typedef struct {
ngx_uint_t methods;
ngx_uint_t access;
ngx_uint_t min_delete_depth;
ngx_flag_t create_full_put_path;
} ngx_http_dav_loc_conf_t;
typedef struct {
ngx_str_t path;
size_t len;
} ngx_http_dav_copy_ctx_t;
static ngx_int_t ngx_http_dav_handler(ngx_http_request_t *r);
static void ngx_http_dav_put_handler(ngx_http_request_t *r);
static ngx_int_t ngx_http_dav_delete_handler(ngx_http_request_t *r);
static ngx_int_t ngx_http_dav_delete_path(ngx_http_request_t *r,
ngx_str_t *path, ngx_uint_t dir);
static ngx_int_t ngx_http_dav_delete_dir(ngx_tree_ctx_t *ctx, ngx_str_t *path);
static ngx_int_t ngx_http_dav_delete_file(ngx_tree_ctx_t *ctx, ngx_str_t *path);
static ngx_int_t ngx_http_dav_noop(ngx_tree_ctx_t *ctx, ngx_str_t *path);
static ngx_int_t ngx_http_dav_mkcol_handler(ngx_http_request_t *r,
ngx_http_dav_loc_conf_t *dlcf);
static ngx_int_t ngx_http_dav_copy_move_handler(ngx_http_request_t *r);
static ngx_int_t ngx_http_dav_copy_dir(ngx_tree_ctx_t *ctx, ngx_str_t *path);
static ngx_int_t ngx_http_dav_copy_dir_time(ngx_tree_ctx_t *ctx,
ngx_str_t *path);
static ngx_int_t ngx_http_dav_copy_tree_file(ngx_tree_ctx_t *ctx,
ngx_str_t *path);
static ngx_int_t ngx_http_dav_depth(ngx_http_request_t *r, ngx_int_t dflt);
static ngx_int_t ngx_http_dav_error(ngx_log_t *log, ngx_err_t err,
ngx_int_t not_found, char *failed, u_char *path);
static ngx_int_t ngx_http_dav_location(ngx_http_request_t *r, u_char *path);
static void *ngx_http_dav_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_dav_merge_loc_conf(ngx_conf_t *cf,
void *parent, void *child);
static ngx_int_t ngx_http_dav_init(ngx_conf_t *cf);
static ngx_conf_bitmask_t ngx_http_dav_methods_mask[] = {
{ ngx_string("off"), NGX_HTTP_DAV_OFF },
{ ngx_string("put"), NGX_HTTP_PUT },
{ ngx_string("delete"), NGX_HTTP_DELETE },
{ ngx_string("mkcol"), NGX_HTTP_MKCOL },
{ ngx_string("copy"), NGX_HTTP_COPY },
{ ngx_string("move"), NGX_HTTP_MOVE },
{ ngx_null_string, 0 }
};
static ngx_command_t ngx_http_dav_commands[] = {
{ ngx_string("dav_methods"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
ngx_conf_set_bitmask_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_dav_loc_conf_t, methods),
&ngx_http_dav_methods_mask },
{ ngx_string("create_full_put_path"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_dav_loc_conf_t, create_full_put_path),
NULL },
{ ngx_string("min_delete_depth"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_dav_loc_conf_t, min_delete_depth),
NULL },
{ ngx_string("dav_access"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123,
ngx_conf_set_access_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_dav_loc_conf_t, access),
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_http_dav_module_ctx = {
NULL, /* preconfiguration */
ngx_http_dav_init, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_dav_create_loc_conf, /* create location configuration */
ngx_http_dav_merge_loc_conf /* merge location configuration */
};
ngx_module_t ngx_http_dav_module = {
NGX_MODULE_V1,
&ngx_http_dav_module_ctx, /* module context */
ngx_http_dav_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
NULL, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
NULL, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
static ngx_int_t
ngx_http_dav_handler(ngx_http_request_t *r)
{
ngx_int_t rc;
ngx_http_dav_loc_conf_t *dlcf;
if (r->zero_in_uri) {
return NGX_DECLINED;
}
dlcf = ngx_http_get_module_loc_conf(r, ngx_http_dav_module);
if (!(r->method & dlcf->methods)) {
return NGX_DECLINED;
}
switch (r->method) {
case NGX_HTTP_PUT:
if (r->uri.data[r->uri.len - 1] == '/') {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"can not PUT to a collection");
return NGX_HTTP_CONFLICT;
}
r->request_body_in_file_only = 1;
r->request_body_in_persistent_file = 1;
r->request_body_in_clean_file = 1;
r->request_body_file_group_access = 1;
r->request_body_file_log_level = 0;
rc = ngx_http_read_client_request_body(r, ngx_http_dav_put_handler);
if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
return rc;
}
return NGX_DONE;
case NGX_HTTP_DELETE:
return ngx_http_dav_delete_handler(r);
case NGX_HTTP_MKCOL:
return ngx_http_dav_mkcol_handler(r, dlcf);
case NGX_HTTP_COPY:
return ngx_http_dav_copy_move_handler(r);
case NGX_HTTP_MOVE:
return ngx_http_dav_copy_move_handler(r);
}
return NGX_DECLINED;
}
static void
ngx_http_dav_put_handler(ngx_http_request_t *r)
{
size_t root;
time_t date;
ngx_str_t *temp, path;
ngx_uint_t status;
ngx_file_info_t fi;
ngx_ext_rename_file_t ext;
ngx_http_dav_loc_conf_t *dlcf;
ngx_http_map_uri_to_path(r, &path, &root, 0);
path.len--;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http put filename: \"%s\"", path.data);
temp = &r->request_body->temp_file->file.name;
if (ngx_file_info(path.data, &fi) == NGX_FILE_ERROR) {
status = NGX_HTTP_CREATED;
} else {
status = NGX_HTTP_NO_CONTENT;
if (ngx_is_dir(&fi)) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_EISDIR,
"\"%s\" could not be created", path.data);
if (ngx_delete_file(temp->data) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
ngx_delete_file_n " \"%s\" failed",
temp->data);
}
ngx_http_finalize_request(r, NGX_HTTP_CONFLICT);
return;
}
}
dlcf = ngx_http_get_module_loc_conf(r, ngx_http_dav_module);
ext.access = dlcf->access;
ext.path_access = dlcf->access;
ext.time = -1;
ext.create_path = dlcf->create_full_put_path;
ext.delete_file = 1;
ext.log = r->connection->log;
if (r->headers_in.date) {
date = ngx_http_parse_time(r->headers_in.date->value.data,
r->headers_in.date->value.len);
if (date != NGX_ERROR) {
ext.time = date;
ext.fd = r->request_body->temp_file->file.fd;
}
}
if (ngx_ext_rename_file(temp, &path, &ext) != NGX_OK) {
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
}
if (status == NGX_HTTP_CREATED) {
if (ngx_http_dav_location(r, path.data) != NGX_OK) {
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
}
r->headers_out.content_length_n = 0;
}
r->headers_out.status = status;
r->header_only = 1;
ngx_http_finalize_request(r, ngx_http_send_header(r));
return;
}
static ngx_int_t
ngx_http_dav_delete_handler(ngx_http_request_t *r)
{
size_t root;
ngx_err_t err;
ngx_int_t rc, depth;
ngx_uint_t i, d, dir;
ngx_str_t path;
ngx_file_info_t fi;
ngx_http_dav_loc_conf_t *dlcf;
if (r->headers_in.content_length_n > 0) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"DELETE with body is unsupported");
return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE;
}
dlcf = ngx_http_get_module_loc_conf(r, ngx_http_dav_module);
if (dlcf->min_delete_depth) {
d = 0;
for (i = 0; i < r->uri.len; /* void */) {
if (r->uri.data[i++] == '/') {
if (++d >= dlcf->min_delete_depth && i < r->uri.len) {
goto ok;
}
}
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"insufficient URI depth:%i to DELETE", d);
return NGX_HTTP_CONFLICT;
}
ok:
ngx_http_map_uri_to_path(r, &path, &root, 0);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http delete filename: \"%s\"", path.data);
if (ngx_file_info(path.data, &fi) == NGX_FILE_ERROR) {
err = ngx_errno;
rc = (err == NGX_ENOTDIR) ? NGX_HTTP_CONFLICT : NGX_HTTP_NOT_FOUND;
return ngx_http_dav_error(r->connection->log, err,
rc, ngx_file_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, NGX_EISDIR,
"DELETE \"%s\" failed", path.data);
return NGX_HTTP_CONFLICT;
}
depth = ngx_http_dav_depth(r, NGX_HTTP_DAV_INFINITY_DEPTH);
if (depth != NGX_HTTP_DAV_INFINITY_DEPTH) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"\"Depth\" header must be infinity");
return NGX_HTTP_BAD_REQUEST;
}
path.len -= 2; /* omit "/\0" */
dir = 1;
} else {
/*
* we do not need to test (r->uri.data[r->uri.len - 1] == '/')
* because ngx_file_info("/file/") returned NGX_ENOTDIR above
*/
depth = ngx_http_dav_depth(r, 0);
if (depth != 0 && depth != NGX_HTTP_DAV_INFINITY_DEPTH) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"\"Depth\" header must be 0 or infinity");
return NGX_HTTP_BAD_REQUEST;
}
dir = 0;
}
rc = ngx_http_dav_delete_path(r, &path, dir);
if (rc == NGX_OK) {
return NGX_HTTP_NO_CONTENT;
}
return rc;
}
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_delete_dir(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http delete dir: \"%s\"", path->data);
if (ngx_delete_dir(path->data) == NGX_FILE_ERROR) {
/* TODO: add to 207 */
(void) ngx_http_dav_error(ctx->log, ngx_errno, 0, ngx_delete_dir_n,
path->data);
}
return NGX_OK;
}
static ngx_int_t
ngx_http_dav_delete_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http delete file: \"%s\"", path->data);
if (ngx_delete_file(path->data) == NGX_FILE_ERROR) {
/* TODO: add to 207 */
(void) ngx_http_dav_error(ctx->log, ngx_errno, 0, ngx_delete_file_n,
path->data);
}
return NGX_OK;
}
static ngx_int_t
ngx_http_dav_noop(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
return NGX_OK;
}
static ngx_int_t
ngx_http_dav_mkcol_handler(ngx_http_request_t *r, ngx_http_dav_loc_conf_t *dlcf)
{
u_char *p;
size_t root;
ngx_str_t path;
if (r->headers_in.content_length_n > 0) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"MKCOL with body is unsupported");
return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE;
}
if (r->uri.data[r->uri.len - 1] != '/') {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"MKCOL can create a collection only");
return NGX_HTTP_CONFLICT;
}
p = ngx_http_map_uri_to_path(r, &path, &root, 0);
*(p - 1) = '\0';
r->uri.len--;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http mkcol path: \"%s\"", path.data);
if (ngx_create_dir(path.data, ngx_dir_access(dlcf->access))
!= NGX_FILE_ERROR)
{
if (ngx_http_dav_location(r, path.data) != NGX_OK) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
return NGX_HTTP_CREATED;
}
return ngx_http_dav_error(r->connection->log, ngx_errno,
NGX_HTTP_CONFLICT, ngx_create_dir_n, 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;
}
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 = 0;
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, &copy.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_file_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_file_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_file_info(path.data, &fi) == NGX_FILE_ERROR) {
return ngx_http_dav_error(r->connection->log, ngx_errno,
NGX_HTTP_NOT_FOUND, ngx_file_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, &copy.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 = &copy;
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, &copy.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;
}
static ngx_int_t
ngx_http_dav_copy_dir(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
u_char *p, *dir;
size_t len;
ngx_http_dav_copy_ctx_t *copy;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy dir: \"%s\"", path->data);
copy = ctx->data;
len = copy->path.len + path->len;
dir = ngx_alloc(len + 1, ctx->log);
if (dir == NULL) {
return NGX_ABORT;
}
p = ngx_cpymem(dir, copy->path.data, copy->path.len);
(void) ngx_cpystrn(p, path->data + copy->len, path->len - copy->len + 1);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy dir to: \"%s\"", dir);
if (ngx_create_dir(dir, ngx_dir_access(ctx->access)) == NGX_FILE_ERROR) {
(void) ngx_http_dav_error(ctx->log, ngx_errno, 0, ngx_create_dir_n,
dir);
}
ngx_free(dir);
return NGX_OK;
}
static ngx_int_t
ngx_http_dav_copy_dir_time(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
u_char *p, *dir;
size_t len;
ngx_http_dav_copy_ctx_t *copy;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy dir time: \"%s\"", path->data);
copy = ctx->data;
len = copy->path.len + path->len;
dir = ngx_alloc(len + 1, ctx->log);
if (dir == NULL) {
return NGX_ABORT;
}
p = ngx_cpymem(dir, copy->path.data, copy->path.len);
(void) ngx_cpystrn(p, path->data + copy->len, path->len - copy->len + 1);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy dir time to: \"%s\"", dir);
#if (NGX_WIN32)
{
ngx_fd_t fd;
fd = ngx_open_file(dir, NGX_FILE_RDWR, NGX_FILE_OPEN, 0);
if (fd == NGX_INVALID_FILE) {
(void) ngx_http_dav_error(ctx->log, ngx_errno, 0, ngx_open_file_n, dir);
goto failed;
}
if (ngx_set_file_time(NULL, fd, ctx->mtime) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_set_file_time_n " \"%s\" failed", dir);
}
if (ngx_close_file(fd) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_close_file_n " \"%s\" failed", dir);
}
}
failed:
#else
if (ngx_set_file_time(dir, 0, ctx->mtime) != NGX_OK) {
ngx_log_error(NGX_LOG_ALERT, ctx->log, ngx_errno,
ngx_set_file_time_n " \"%s\" failed", dir);
}
#endif
ngx_free(dir);
return NGX_OK;
}
static ngx_int_t
ngx_http_dav_copy_tree_file(ngx_tree_ctx_t *ctx, ngx_str_t *path)
{
u_char *p, *file;
size_t len;
ngx_copy_file_t cf;
ngx_http_dav_copy_ctx_t *copy;
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy file: \"%s\"", path->data);
copy = ctx->data;
len = copy->path.len + path->len;
file = ngx_alloc(len + 1, ctx->log);
if (file == NULL) {
return NGX_ABORT;
}
p = ngx_cpymem(file, copy->path.data, copy->path.len);
(void) ngx_cpystrn(p, path->data + copy->len, path->len - copy->len + 1);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->log, 0,
"http copy file to: \"%s\"", file);
cf.size = ctx->size;
cf.buf_size = 0;
cf.access = ctx->access;
cf.time = ctx->mtime;
cf.log = ctx->log;
(void) ngx_copy_file(path->data, file, &cf);
ngx_free(file);
return NGX_OK;
}
static ngx_int_t
ngx_http_dav_depth(ngx_http_request_t *r, ngx_int_t dflt)
{
ngx_table_elt_t *depth;
depth = r->headers_in.depth;
if (depth == NULL) {
return dflt;
}
if (depth->value.len == 1) {
if (depth->value.data[0] == '0') {
return 0;
}
if (depth->value.data[0] == '1') {
return 1;
}
} else {
if (depth->value.len == sizeof("infinity") - 1
&& ngx_strcmp(depth->value.data, "infinity") == 0)
{
return NGX_HTTP_DAV_INFINITY_DEPTH;
}
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"client sent invalid \"Depth\" header: \"%V\"",
&depth->value);
return NGX_HTTP_DAV_INVALID_DEPTH;
}
static ngx_int_t
ngx_http_dav_error(ngx_log_t *log, ngx_err_t err, ngx_int_t not_found,
char *failed, u_char *path)
{
ngx_int_t rc;
ngx_uint_t level;
if (err == NGX_ENOENT || err == NGX_ENOTDIR || err == NGX_ENAMETOOLONG) {
level = NGX_LOG_ERR;
rc = not_found;
} else if (err == NGX_EACCES || err == NGX_EPERM) {
level = NGX_LOG_ERR;
rc = NGX_HTTP_FORBIDDEN;
} else if (err == NGX_EEXIST) {
level = NGX_LOG_ERR;
rc = NGX_HTTP_NOT_ALLOWED;
} else if (err == NGX_ENOSPC) {
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INSUFFICIENT_STORAGE;
} else {
level = NGX_LOG_CRIT;
rc = NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_log_error(level, log, err, "%s \"%s\" failed", failed, path);
return rc;
}
static ngx_int_t
ngx_http_dav_location(ngx_http_request_t *r, u_char *path)
{
u_char *location;
ngx_http_core_loc_conf_t *clcf;
r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
if (r->headers_out.location == NULL) {
return NGX_ERROR;
}
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (!clcf->alias && clcf->root_lengths == NULL) {
location = path + clcf->root.len;
} else {
location = ngx_pnalloc(r->pool, r->uri.len);
if (location == NULL) {
return NGX_ERROR;
}
ngx_memcpy(location, r->uri.data, r->uri.len);
}
/*
* we do not need to set the r->headers_out.location->hash and
* r->headers_out.location->key fields
*/
r->headers_out.location->value.len = r->uri.len;
r->headers_out.location->value.data = location;
return NGX_OK;
}
static void *
ngx_http_dav_create_loc_conf(ngx_conf_t *cf)
{
ngx_http_dav_loc_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_dav_loc_conf_t));
if (conf == NULL) {
return NULL;
}
/*
* set by ngx_pcalloc():
*
* conf->methods = 0;
*/
conf->min_delete_depth = NGX_CONF_UNSET_UINT;
conf->access = NGX_CONF_UNSET_UINT;
conf->create_full_put_path = NGX_CONF_UNSET;
return conf;
}
static char *
ngx_http_dav_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_http_dav_loc_conf_t *prev = parent;
ngx_http_dav_loc_conf_t *conf = child;
ngx_conf_merge_bitmask_value(conf->methods, prev->methods,
(NGX_CONF_BITMASK_SET|NGX_HTTP_DAV_OFF));
ngx_conf_merge_uint_value(conf->min_delete_depth,
prev->min_delete_depth, 0);
ngx_conf_merge_uint_value(conf->access, prev->access, 0600);
ngx_conf_merge_value(conf->create_full_put_path,
prev->create_full_put_path, 0);
return NGX_CONF_OK;
}
static ngx_int_t
ngx_http_dav_init(ngx_conf_t *cf)
{
ngx_http_handler_pt *h;
ngx_http_core_main_conf_t *cmcf;
cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
h = ngx_array_push(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers);
if (h == NULL) {
return NGX_ERROR;
}
*h = ngx_http_dav_handler;
return NGX_OK;
}
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