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/* Copyright (C) 2004-2022 J.F.Dockes
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "autoconfig.h"
#include <string>
#include <errno.h>
#include "smallut.h"
#include "rclconfig.h"
#include "pxattr.h"
#include "log.h"
#include "cstr.h"
#include "rcldoc.h"
#include "execmd.h"
#include "conftree.h"
using std::string;
using std::map;
using std::vector;
#ifdef __APPLE__
#include "transcode.h"
#include "finderxattr.h"
string decode_finder_metadata(const string& path, const string& xkey, const string& value)
{
if (xkey == "com.apple.metadata:kMDItemFinderComment") {
auto [v1, error] = decode_comment_plist(
(const unsigned char *)value.c_str(), (int)value.size());
if (!error.empty()) {
LOGINF("reapXattrs: failed decoding finder comment for " << path << "\n");
return string();
} else {
if (!v1.empty() && v1[0] == 0) {
string v2;
transcode(v1, v2, "UCS-2BE", cstr_utf8);
return v2;
} else {
return v1;
}
}
} else if (xkey == "com.apple.metadata:_kMDItemUserTags") {
auto [v1, error] = decode_tags_plist(
(const unsigned char *)value.c_str(), (int)value.size());
if (!error.empty()) {
LOGINF("reapXattrs: failed decoding finder tags for " << path << "\n");
return string();
} else if (v1.empty()) {
return string();
} else {
// The tags have a color number at the end, which we discard as not interesting.
string nvalue;
for (auto& _s : v1) {
string s;
if (!_s.empty() && _s[0] == 0) {
transcode(_s, s, "UCS-2BE", cstr_utf8);
} else {
_s.swap(s);
}
auto pos = s.find_last_of(" \t\n\r");
if (pos != string::npos && pos < s.size() - 1) {
if (isdigit(s[pos+1])) {
s.erase(pos);
}
}
trimstring(s, " \t\r\n");
nvalue += s + " ";
}
trimstring(nvalue, " \t\r\n");
return nvalue;
}
}
return string();
}
#endif // __APPLE__
static void docfieldfrommeta(RclConfig* cfg, const string& name, const string &value, Rcl::Doc& doc)
{
string fieldname = cfg->fieldCanon(name);
LOGDEB0("Internfile:: setting [" << fieldname << "] from cmd/xattr value [" << value << "]\n");
if (fieldname == cstr_dj_keymd) {
doc.dmtime = value;
} else {
doc.addmeta(fieldname, value);
}
}
void reapXAttrs(const RclConfig* cfg, const string& path, map<string, string>& xfields)
{
#ifdef _WIN32
PRETEND_USE(cfg);
PRETEND_USE(path);
PRETEND_USE(xfields);
#endif
LOGDEB2("reapXAttrs: [" << path << "]\n");
// Retrieve xattrs names from files and mapping table from config
vector<string> xnames;
if (!pxattr::list(path, &xnames)) {
if (errno == ENOTSUP) {
LOGDEB("FileInterner::reapXattrs: pxattr::list: errno ENOTSUP\n");
} else {
LOGSYSERR("FileInterner::reapXattrs", "pxattr::list", path);
}
return;
}
const map<string, string>& xtof = cfg->getXattrToField();
// Record the xattrs: names found in the config are either skipped or mapped depending if the
// translation is empty. Other names are recorded as-is
for (const auto& xkey : xnames) {
string key = xkey;
auto mit = xtof.find(xkey);
if (mit != xtof.end()) {
if (mit->second.empty()) {
continue;
} else {
key = mit->second;
}
}
string value;
if (!pxattr::get(path, xkey, &value, pxattr::PXATTR_NOFOLLOW)) {
LOGSYSERR("FileInterner::reapXattrs", "pxattr::get", path + " : " + xkey);
continue;
}
#ifdef __APPLE__
static const string applemetastr("com.apple.metadata:");
if (beginswith(xkey, applemetastr)) {
value = decode_finder_metadata(path, xkey, value);
}
#endif // __APPLE__
if (value.empty())
continue;
// Encode should we ?
addmeta(xfields, key, value);
LOGDEB2("reapXAttrs: [" << key << "] -> [" << value << "]\n");
}
}
void docFieldsFromXattrs(RclConfig *cfg, const map<string, string>& xfields, Rcl::Doc& doc)
{
for (const auto& fld : xfields) {
docfieldfrommeta(cfg, fld.first, fld.second, doc);
}
}
void reapMetaCmds(RclConfig* cfg, const string& path, map<string, string>& cfields)
{
const auto& reapers = cfg->getMDReapers();
if (reapers.empty())
return;
map<char,string> smap = {{'f', path}};
for (const auto& reaper : reapers) {
vector<string> cmd;
for (const auto& arg : reaper.cmdv) {
string s;
pcSubst(arg, s, smap);
cmd.push_back(s);
}
string output;
if (ExecCmd::backtick(cmd, output)) {
cfields[reaper.fieldname] = output;
}
}
}
// Set fields from external commands
// These override those from xattrs and can be later augmented by
// values from inside the file.
//
// This is a bit atrocious because some entry names are special:
// "modificationdate" will set mtime instead of an ordinary field,
// and the output from anything beginning with "rclmulti" will be
// interpreted as multiple fields in configuration file format...
void docFieldsFromMetaCmds(RclConfig *cfg, const map<string, string>& cfields, Rcl::Doc& doc)
{
for (const auto& cfld : cfields) {
if (!cfld.first.compare(0, 8, "rclmulti")) {
ConfSimple simple(cfld.second);
if (simple.ok()) {
auto names = simple.getNames("");
for (const auto& nm : names) {
string value;
if (simple.get(nm, value)) {
docfieldfrommeta(cfg, nm, value, doc);
}
}
}
} else {
docfieldfrommeta(cfg, cfld.first, cfld.second, doc);
}
}
}
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