1 | /***************************************************************************
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2 | * _ _ ____ _
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3 | * Project ___| | | | _ \| |
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4 | * / __| | | | |_) | |
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5 | * | (__| |_| | _ <| |___
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6 | * \___|\___/|_| \_\_____|
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7 | *
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8 | * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 | *
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10 | * This software is licensed as described in the file COPYING, which
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11 | * you should have received as part of this distribution. The terms
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12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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13 | *
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14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 | * copies of the Software, and permit persons to whom the Software is
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16 | * furnished to do so, under the terms of the COPYING file.
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17 | *
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18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 | * KIND, either express or implied.
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20 | *
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21 | ***************************************************************************/
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22 | #include "tool_setup.h"
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23 |
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24 | #ifdef HAVE_FSETXATTR
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25 | # include <sys/xattr.h> /* header from libc, not from libattr */
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26 | # define USE_XATTR
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27 | #elif defined(__FreeBSD_version) && (__FreeBSD_version > 500000)
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28 | # include <sys/types.h>
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29 | # include <sys/extattr.h>
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30 | # define USE_XATTR
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31 | #endif
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32 |
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33 | #include "tool_xattr.h"
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34 |
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35 | #include "memdebug.h" /* keep this as LAST include */
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36 |
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37 | #ifdef USE_XATTR
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38 |
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39 | /* mapping table of curl metadata to extended attribute names */
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40 | static const struct xattr_mapping {
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41 | const char *attr; /* name of the xattr */
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42 | CURLINFO info;
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43 | } mappings[] = {
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44 | /* mappings proposed by
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45 | * https://freedesktop.org/wiki/CommonExtendedAttributes/
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46 | */
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47 | { "user.xdg.origin.url", CURLINFO_EFFECTIVE_URL },
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48 | { "user.mime_type", CURLINFO_CONTENT_TYPE },
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49 | { NULL, CURLINFO_NONE } /* last element, abort loop here */
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50 | };
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51 |
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52 | /* store metadata from the curl request alongside the downloaded
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53 | * file using extended attributes
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54 | */
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55 | int fwrite_xattr(CURL *curl, int fd)
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56 | {
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57 | int i = 0;
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58 | int err = 0;
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59 |
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60 | /* loop through all xattr-curlinfo pairs and abort on a set error */
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61 | while(err == 0 && mappings[i].attr != NULL) {
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62 | char *value = NULL;
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63 | CURLcode result = curl_easy_getinfo(curl, mappings[i].info, &value);
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64 | if(!result && value) {
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65 | #ifdef HAVE_FSETXATTR_6
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66 | err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0, 0);
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67 | #elif defined(HAVE_FSETXATTR_5)
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68 | err = fsetxattr(fd, mappings[i].attr, value, strlen(value), 0);
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69 | #elif defined(__FreeBSD_version)
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70 | err = extattr_set_fd(fd, EXTATTR_NAMESPACE_USER, mappings[i].attr, value,
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71 | strlen(value));
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72 | /* FreeBSD's extattr_set_fd returns the length of the extended attribute
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73 | */
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74 | err = err < 0 ? err : 0;
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75 | #endif
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76 | }
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77 | i++;
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78 | }
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79 |
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80 | return err;
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81 | }
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82 | #else
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83 | int fwrite_xattr(CURL *curl, int fd)
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84 | {
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85 | (void)curl;
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86 | (void)fd;
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87 |
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88 | return 0;
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89 | }
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90 | #endif
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