Mercurial > hg > nginx-quic
view src/http/modules/ngx_http_dav_module.c @ 700:c1104f701926
ngx_http_browser_module
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 18 Sep 2006 12:25:07 +0000 |
parents | 7e24168b0853 |
children | c3ebeee31026 |
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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_flag_t create_full_put_path; ngx_uint_t access; } 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 ngx_int_t ngx_http_dav_error(ngx_http_request_t *, 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 char *ngx_http_dav_access(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); 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_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("dav_access"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE123, ngx_http_dav_access, NGX_HTTP_LOC_CONF_OFFSET, 0, 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) { char *failed; ngx_int_t rc; ngx_str_t path; ngx_file_info_t fi; 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; 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: if (r->headers_in.content_length_n > 0) { return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE; } rc = ngx_http_discard_body(r); if (rc != NGX_OK && rc != NGX_AGAIN) { return rc; } 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_file_info(path.data, &fi) != -1) { if (ngx_is_dir(&fi)) { if (r->uri.data[r->uri.len - 1] != '/' || r->headers_in.depth == NULL || r->headers_in.depth->value.len != sizeof("infinity") - 1 || ngx_strcmp(r->headers_in.depth->value.data, "infinity") != 0) { return NGX_HTTP_BAD_REQUEST; } if (ngx_delete_dir(path.data) != NGX_FILE_ERROR) { return NGX_HTTP_NO_CONTENT; } failed = ngx_delete_dir_n; } else { if (r->uri.data[r->uri.len - 1] == '/') { return NGX_HTTP_BAD_REQUEST; } if (r->headers_in.depth && r->headers_in.depth->value.len == 1 && r->headers_in.depth->value.data[0] == '1') { return NGX_HTTP_BAD_REQUEST; } if (ngx_delete_file(path.data) != NGX_FILE_ERROR) { return NGX_HTTP_NO_CONTENT; } failed = ngx_delete_file_n; } } else { failed = ngx_file_info_n; } return ngx_http_dav_error(r, ngx_errno, NGX_HTTP_NOT_FOUND, failed, path.data); case NGX_HTTP_MKCOL: if (r->uri.data[r->uri.len - 1] != '/') { return NGX_DECLINED; } if (r->headers_in.content_length_n > 0) { return NGX_HTTP_UNSUPPORTED_MEDIA_TYPE; } rc = ngx_http_discard_body(r); if (rc != NGX_OK && rc != NGX_AGAIN) { return rc; } ngx_http_map_uri_to_path(r, &path, 0); ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http mkcol path: \"%s\"", path.data); if (ngx_create_dir(path.data, 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, ngx_errno, NGX_HTTP_CONFLICT, ngx_create_dir_n, path.data); } return NGX_DECLINED; } static void ngx_http_dav_put_handler(ngx_http_request_t *r) { char *failed; u_char *name; time_t date; ngx_err_t err; ngx_str_t *temp, path; ngx_uint_t status; ngx_file_info_t fi; ngx_http_dav_loc_conf_t *dlcf; 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_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); #if !(NGX_WIN32) if (ngx_change_file_access(temp->data, dlcf->access & ~0111) == NGX_FILE_ERROR) { err = ngx_errno; failed = ngx_change_file_access_n; name = temp->data; goto failed; } #endif 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) { if (ngx_set_file_time(temp->data, r->request_body->temp_file->file.fd, date) != NGX_OK) { err = ngx_errno; failed = ngx_set_file_time_n; name = temp->data; goto failed; } } } failed = ngx_rename_file_n; name = path.data; if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) { goto ok; } err = ngx_errno; if (err == NGX_ENOENT) { if (dlcf->create_full_put_path) { err = ngx_create_full_path(path.data, dlcf->access); if (err == 0) { 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 failed: 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_dav_error(r, err, NGX_HTTP_CONFLICT, failed, name)); return; ok: 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_error(ngx_http_request_t *r, 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, r->connection->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_palloc(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 char * ngx_http_dav_access(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_dav_loc_conf_t *lcf = conf; u_char *p; ngx_str_t *value; ngx_uint_t i, right, shift; if (lcf->access != NGX_CONF_UNSET_UINT) { return "is duplicate"; } value = cf->args->elts; lcf->access = 0700; for (i = 1; i < 3; i++) { p = value[i].data; if (ngx_strncmp(p, "user:", sizeof("user:") - 1) == 0) { shift = 6; p += sizeof("user:") - 1; } else if (ngx_strncmp(p, "group:", sizeof("group:") - 1) == 0) { shift = 3; p += sizeof("group:") - 1; } else if (ngx_strncmp(p, "all:", sizeof("all:") - 1) == 0) { shift = 0; p += sizeof("all:") - 1; } else { goto invalid; } if (ngx_strcmp(p, "rw") == 0) { right = 7; } else if (ngx_strcmp(p, "r") == 0) { right = 5; } else { goto invalid; } lcf->access += right << shift; } return NGX_CONF_OK; invalid: ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid value \"%V\"", &value[i]); return NGX_CONF_ERROR; } 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; */ conf->create_full_put_path = NGX_CONF_UNSET; conf->access = NGX_CONF_UNSET_UINT; 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_value(conf->create_full_put_path, prev->create_full_put_path, 0); ngx_conf_merge_uint_value(conf->access, prev->access, 0600); 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; }