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/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#define NGX_HTTP_DAV_OFF 2
typedef struct {
ngx_uint_t methods;
} ngx_http_dav_loc_conf_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 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_cycle_t *cycle);
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_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_null_command
};
ngx_http_module_t ngx_http_dav_module_ctx = {
NULL, /* preconfiguration */
NULL, /* 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 */
ngx_http_dav_init, /* 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_str_t path;
ngx_http_dav_loc_conf_t *dlcf;
/* TODO: Win32 */
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] == '/') {
return NGX_DECLINED;
}
r->request_body_in_file_only = 1;
r->request_body_in_persistent_file = 1;
r->request_body_delete_incomplete_file = 1;
r->request_body_file_group_access = 1;
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:
if (r->uri.data[r->uri.len - 1] == '/') {
return NGX_DECLINED;
}
ngx_http_map_uri_to_path(r, &path, 0);
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http delete filename: \"%s\"", path.data);
if (ngx_delete_file(path.data) == NGX_FILE_ERROR) {
ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
ngx_delete_file_n " \"%s\" failed", path.data);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
return NGX_HTTP_NO_CONTENT;
}
return NGX_DECLINED;
}
static void
ngx_http_dav_put_handler(ngx_http_request_t *r)
{
u_char *location;
ngx_err_t err;
ngx_str_t *temp, path;
ngx_uint_t status;
ngx_file_info_t fi;
ngx_http_core_loc_conf_t *clcf;
ngx_http_map_uri_to_path(r, &path, 0);
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) == -1) {
status = NGX_HTTP_CREATED;
} else {
status = NGX_HTTP_NO_CONTENT;
}
if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
goto ok;
}
err = ngx_errno;
#if (NGX_WIN32)
if (err == NGX_EEXIST) {
if (ngx_win32_rename_file(temp, &path, r->pool) != NGX_ERROR) {
if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
goto ok;
}
}
err = ngx_errno;
}
#endif
ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
ngx_rename_file_n " \"%s\" failed", path.data);
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
ok:
if (status == NGX_HTTP_CREATED) {
r->headers_out.location = ngx_palloc(r->pool, sizeof(ngx_table_elt_t));
if (r->headers_out.location == NULL) {
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
}
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (!clcf->alias && clcf->root_lengths == NULL) {
location = path.data + clcf->root.len;
} else {
location = ngx_palloc(r->pool, r->uri.len);
if (location == NULL) {
ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
return;
}
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;
}
r->headers_out.status = status;
r->header_only = 1;
ngx_http_finalize_request(r, ngx_http_send_header(r));
return;
}
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 NGX_CONF_ERROR;
}
/*
* set by ngx_pcalloc():
*
* conf->methods = 0;
*/
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));
return NGX_CONF_OK;
}
static ngx_int_t
ngx_http_dav_init(ngx_cycle_t *cycle)
{
ngx_http_handler_pt *h;
ngx_http_core_main_conf_t *cmcf;
cmcf = ngx_http_cycle_get_module_main_conf(cycle, 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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