diff options
Diffstat (limited to 'app/nginx/src/http/modules/ngx_http_dav_module.c')
-rw-r--r-- | app/nginx/src/http/modules/ngx_http_dav_module.c | 1159 |
1 files changed, 1159 insertions, 0 deletions
diff --git a/app/nginx/src/http/modules/ngx_http_dav_module.c b/app/nginx/src/http/modules/ngx_http_dav_module.c new file mode 100644 index 0000000..895a52d --- /dev/null +++ b/app/nginx/src/http/modules/ngx_http_dav_module.c @@ -0,0 +1,1159 @@ + +/* + * Copyright (C) Igor Sysoev + * Copyright (C) Nginx, Inc. + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> + + +#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; + + 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, + "cannot PUT to a collection"); + return NGX_HTTP_CONFLICT; + } + + if (r->headers_in.content_range) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "PUT with range is unsupported"); + return NGX_HTTP_NOT_IMPLEMENTED; + } + + 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; + + if (r->request_body == NULL || r->request_body->temp_file == NULL) { + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return; + } + + if (ngx_http_map_uri_to_path(r, &path, &root, 0) == NULL) { + ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); + return; + } + + 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_parse_http_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: + + if (ngx_http_map_uri_to_path(r, &path, &root, 0) == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "http delete filename: \"%s\"", path.data); + + if (ngx_link_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_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, 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_link_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); + if (p == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + *(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; + } + + 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: + + if (ngx_http_map_uri_to_path(r, &path, &root, 0) == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "http copy from: \"%s\"", path.data); + + uri = r->uri; + r->uri = duri; + + if (ngx_http_map_uri_to_path(r, ©.path, &root, 0) == NULL) { + return NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + 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; +} + + +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_list_push(&r->headers_out.headers); + 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); + } + + r->headers_out.location->hash = 1; + ngx_str_set(&r->headers_out.location->key, "Location"); + 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; +} |