1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel (at) 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 https://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 */ 40 static const struct xattr_mapping { 41 const char *attr; /* name of the xattr */ 42 CURLINFO info; 43 } mappings[] = { 44 /* mappings proposed by 45 * https://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 */ 55 int fwrite_xattr(CURL *curl, int fd) 56 { 57 int i = 0; 58 int err = 0; 59 60 /* loop through all xattr-curlinfo pairs and abort on a set error */ 61 while(err == 0 && mappings[i].attr != NULL) { 62 char *value = NULL; 63 CURLcode result = curl_easy_getinfo(curl, mappings[i].info, &value); 64 if(!result && value) { 65 #ifdef HAVE_FSETXATTR_6 66 err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0, 0); 67 #elif defined(HAVE_FSETXATTR_5) 68 err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0); 69 #elif defined(__FreeBSD_version) 70 err = extattr_set_fd(fd, EXTATTR_NAMESPACE_USER, mappings[i].attr, value, 71 strlen(value)); 72 /* FreeBSD's extattr_set_fd returns the length of the extended attribute 73 */ 74 err = err < 0 ? err : 0; 75 #endif 76 } 77 i++; 78 } 79 80 return err; 81 } 82 #else 83 int fwrite_xattr(CURL *curl, int fd) 84 { 85 (void)curl; 86 (void)fd; 87 88 return 0; 89 } 90 #endif 91
