1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at http://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22#include "tool_setup.h" 23 24#ifdef HAVE_FSETXATTR 25# include <sys/xattr.h> /* header from libc, not from libattr */ 26# define USE_XATTR 27#elif defined(__FreeBSD_version) && (__FreeBSD_version > 500000) 28# include <sys/types.h> 29# include <sys/extattr.h> 30# define USE_XATTR 31#endif 32 33#include "tool_xattr.h" 34 35#include "memdebug.h" /* keep this as LAST include */ 36 37#ifdef USE_XATTR 38 39/* mapping table of curl metadata to extended attribute names */ 40static const struct xattr_mapping { 41 const char *attr; /* name of the xattr */ 42 CURLINFO info; 43} mappings[] = { 44 /* mappings proposed by 45 * http://freedesktop.org/wiki/CommonExtendedAttributes 46 */ 47 { "user.xdg.origin.url", CURLINFO_EFFECTIVE_URL }, 48 { "user.mime_type", CURLINFO_CONTENT_TYPE }, 49 { NULL, CURLINFO_NONE } /* last element, abort loop here */ 50}; 51 52/* store metadata from the curl request alongside the downloaded 53 * file using extended attributes 54 */ 55int fwrite_xattr(CURL *curl, int fd) 56{ 57 int i = 0; 58 int err = 0; 59 /* loop through all xattr-curlinfo pairs and abort on a set error */ 60 while(err == 0 && mappings[i].attr != NULL) { 61 char *value = NULL; 62 CURLcode rc = curl_easy_getinfo(curl, mappings[i].info, &value); 63 if(rc == CURLE_OK && value) { 64#ifdef HAVE_FSETXATTR_6 65 err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0, 0); 66#elif defined(HAVE_FSETXATTR_5) 67 err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0); 68#elif defined(__FreeBSD_version) 69 err = extattr_set_fd(fd, EXTATTR_NAMESPACE_USER, mappings[i].attr, value, 70 strlen(value)); 71 /* FreeBSD's extattr_set_fd returns the length of the extended attribute 72 */ 73 err = err < 0 ? err : 0; 74#endif 75 } 76 i++; 77 } 78 return err; 79} 80#else 81int fwrite_xattr(CURL *curl, int fd) 82{ 83 (void)curl; 84 (void)fd; 85 return 0; 86} 87#endif 88