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internfile.cpp    1270 lines (1156 with data), 42.0 kB

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/* Copyright (C) 2004 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.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef TEST_INTERNFILE
#include "autoconfig.h"
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include "safefcntl.h"
#include <sys/types.h>
#include "safesysstat.h"
#include "safeunistd.h"
#include <string>
#include <iostream>
#include <map>
using namespace std;
#include "cstr.h"
#include "internfile.h"
#include "rcldoc.h"
#include "mimetype.h"
#include "log.h"
#include "mimehandler.h"
#include "execmd.h"
#include "pathut.h"
#include "rclconfig.h"
#include "mh_html.h"
#include "fileudi.h"
#include "cancelcheck.h"
#include "copyfile.h"
#include "fetcher.h"
#include "extrameta.h"
#include "uncomp.h"
// The internal path element separator. This can't be the same as the rcldb
// file to ipath separator : "|"
// We replace it with a control char if it comes out of a filter (ie:
// rclzip or rclchm can do this). If you want the SOH control char
// inside an ipath, you're out of luck (and a bit weird).
static const string cstr_isep(":");
static const char cchar_colon_repl = '\x01';
static string colon_hide(const string& in)
{
string out;
for (string::const_iterator it = in.begin(); it != in.end(); it++) {
out += *it == ':' ? cchar_colon_repl : *it;
}
return out;
}
static string colon_restore(const string& in)
{
string out;
for (string::const_iterator it = in.begin(); it != in.end(); it++) {
out += *it == cchar_colon_repl ? ':' : *it;
}
return out;
}
// This is used when the user wants to retrieve a search result doc's parent
// (ie message having a given attachment)
bool FileInterner::getEnclosingUDI(const Rcl::Doc &doc, string& udi)
{
LOGDEB("FileInterner::getEnclosingUDI(): url [" << doc.url <<
"] ipath [" << doc.ipath << "]\n");
string eipath = doc.ipath;
string::size_type colon;
if (eipath.empty())
return false;
if ((colon = eipath.find_last_of(cstr_isep)) != string::npos) {
eipath.erase(colon);
} else {
eipath.erase();
}
make_udi(url_gpath(doc.idxurl.empty() ? doc.url : doc.idxurl), eipath, udi);
return true;
}
string FileInterner::getLastIpathElt(const string& ipath)
{
string::size_type sep;
if ((sep = ipath.find_last_of(cstr_isep)) != string::npos) {
return ipath.substr(sep + 1);
} else {
return ipath;
}
}
bool FileInterner::ipathContains(const string& parent, const string& child)
{
return child.find(parent) == 0 &&
child.find(cstr_isep, parent.size()) == parent.size();
}
// Constructor: identify the input file, possibly create an
// uncompressed temporary copy, and create the top filter for the
// uncompressed file type.
//
// Empty handler on return says that we're in error, this will be
// processed by the first call to internfile().
// Split into "constructor calls init()" to allow use from other constructor
FileInterner::FileInterner(const string &fn, const struct stat *stp,
RclConfig *cnf, int flags, const string *imime)
{
LOGDEB0("FileInterner::FileInterner(fn=" << fn << ")\n");
if (fn.empty()) {
LOGERR("FileInterner::FileInterner: empty file name!\n");
return;
}
initcommon(cnf, flags);
init(fn, stp, cnf, flags, imime);
}
void FileInterner::init(const string &f, const struct stat *stp, RclConfig *cnf,
int flags, const string *imime)
{
if (f.empty()) {
LOGERR("FileInterner::init: empty file name!\n");
return;
}
m_fn = f;
// Compute udi for the input file. This is used by filters which
// manage some kind of cache. Indexing by udi makes things easier
// because they sometimes get a temp as actual input.
string udi;
make_udi(f, cstr_null, udi);
cnf->setKeyDir(path_getfather(m_fn));
string l_mime;
bool usfci = false;
cnf->getConfParam("usesystemfilecommand", &usfci);
// In general, even when the input mime type is set (when
// previewing), we can't use it: it's the type for the actual
// document, but this can be part of a compound document, and
// we're dealing with the top level file here, or this could be a
// compressed file. The flag tells us we really can use it
// (e.g. the web indexer sets it).
if (flags & FIF_doUseInputMimetype) {
if (!imime) {
LOGERR("FileInterner:: told to use null imime\n");
return;
}
l_mime = *imime;
} else {
LOGDEB("FileInterner::init fn [" << f << "] mime [" <<
(imime ? imime->c_str() : "(null)") << "] preview " <<
m_forPreview << "\n");
// Run mime type identification in any case (see comment above).
l_mime = mimetype(m_fn, stp, m_cfg, usfci);
// If identification fails, try to use the input parameter. This
// is then normally not a compressed type (it's the mime type from
// the db), and is only set when previewing, not for indexing
if (l_mime.empty() && imime)
l_mime = *imime;
}
int64_t docsize = stp->st_size;
if (!l_mime.empty()) {
// Has mime: check for a compressed file. If so, create a
// temporary uncompressed file, and rerun the mime type
// identification, then do the rest with the temp file.
vector<string>ucmd;
if (m_cfg->getUncompressor(l_mime, ucmd)) {
// Check for compressed size limit
int maxkbs = -1;
if (!m_cfg->getConfParam("compressedfilemaxkbs", &maxkbs) ||
maxkbs < 0 || !stp || int(stp->st_size / 1024) < maxkbs) {
if (!m_uncomp->uncompressfile(m_fn, ucmd, m_tfile)) {
return;
}
LOGDEB1("FileInterner:: after ucomp: tfile " << m_tfile <<"\n");
m_fn = m_tfile;
// Stat the uncompressed file, mainly to get the size
struct stat ucstat;
if (path_fileprops(m_fn, &ucstat) != 0) {
LOGERR("FileInterner: can't stat the uncompressed file[" <<
m_fn << "] errno " << errno << "\n");
return;
} else {
docsize = ucstat.st_size;
}
l_mime = mimetype(m_fn, &ucstat, m_cfg, usfci);
if (l_mime.empty() && imime)
l_mime = *imime;
} else {
LOGINFO("FileInterner:: " << m_fn << " over size limit " <<
maxkbs << " kbs\n");
}
}
}
if (l_mime.empty()) {
// No mime type. We let it through as config may warrant that
// we index all file names
LOGDEB0("FileInterner:: no mime: [" << m_fn << "]\n");
}
// Get fields computed from extended attributes. We use the
// original file, not the m_fn which may be the uncompressed temp
// file
if (!m_noxattrs)
reapXAttrs(m_cfg, f, m_XAttrsFields);
// Gather metadata from external commands as configured.
reapMetaCmds(m_cfg, f, m_cmdFields);
m_mimetype = l_mime;
// Look for appropriate handler (might still return empty)
RecollFilter *df = getMimeHandler(l_mime, m_cfg, !m_forPreview);
if (!df || df->is_unknown()) {
// No real handler for this type, for now :(
LOGDEB("FileInterner:: unprocessed mime: [" << l_mime << "] [" << f <<
"]\n");
if (!df)
return;
}
df->set_property(Dijon::Filter::OPERATING_MODE,
m_forPreview ? "view" : "index");
df->set_property(Dijon::Filter::DJF_UDI, udi);
df->set_docsize(docsize);
if (!df->set_document_file(l_mime, m_fn)) {
delete df;
LOGERR("FileInterner:: error converting " << m_fn << "\n");
return;
}
m_handlers.push_back(df);
LOGDEB("FileInterner:: init ok " << l_mime << " [" << m_fn << "]\n");
m_ok = true;
}
// Setup from memory data (ie: out of the web cache). imime needs to be set.
FileInterner::FileInterner(const string &data, RclConfig *cnf,
int flags, const string& imime)
{
LOGDEB0("FileInterner::FileInterner(data)\n");
initcommon(cnf, flags);
init(data, cnf, flags, imime);
}
void FileInterner::init(const string &data, RclConfig *cnf,
int flags, const string& imime)
{
if (imime.empty()) {
LOGERR("FileInterner: inmemory constructor needs input mime type\n");
return;
}
m_mimetype = imime;
// Look for appropriate handler (might still return empty)
RecollFilter *df = getMimeHandler(m_mimetype, m_cfg, !m_forPreview);
if (!df) {
// No handler for this type, for now :( if indexallfilenames
// is set in the config, this normally wont happen (we get mh_unknown)
LOGDEB("FileInterner:: unprocessed mime [" << m_mimetype << "]\n");
return;
}
df->set_property(Dijon::Filter::OPERATING_MODE,
m_forPreview ? "view" : "index");
bool result = false;
df->set_docsize(data.length());
if (df->is_data_input_ok(Dijon::Filter::DOCUMENT_STRING)) {
result = df->set_document_string(m_mimetype, data);
} else if (df->is_data_input_ok(Dijon::Filter::DOCUMENT_DATA)) {
result = df->set_document_data(m_mimetype, data.c_str(), data.length());
} else if (df->is_data_input_ok(Dijon::Filter::DOCUMENT_FILE_NAME)) {
TempFile temp = dataToTempFile(data, m_mimetype);
if (temp.ok() &&
(result = df->set_document_file(m_mimetype, temp.filename()))) {
m_tmpflgs[m_handlers.size()] = true;
m_tempfiles.push_back(temp);
}
}
if (!result) {
LOGINFO("FileInterner:: set_doc failed inside for mtype " <<
m_mimetype << "\n");
delete df;
return;
}
m_handlers.push_back(df);
m_ok = true;
}
void FileInterner::initcommon(RclConfig *cnf, int flags)
{
m_cfg = cnf;
m_forPreview = ((flags & FIF_forPreview) != 0);
m_uncomp = new Uncomp(m_forPreview);
// Initialize handler stack.
m_handlers.reserve(MAXHANDLERS);
for (unsigned int i = 0; i < MAXHANDLERS; i++)
m_tmpflgs[i] = false;
m_targetMType = cstr_textplain;
m_cfg->getConfParam("noxattrfields", &m_noxattrs);
m_direct = false;
}
FileInterner::FileInterner(const Rcl::Doc& idoc, RclConfig *cnf, int flags)
{
LOGDEB0("FileInterner::FileInterner(idoc)\n");
initcommon(cnf, flags);
DocFetcher *fetcher = docFetcherMake(cnf, idoc);
if (fetcher == 0) {
LOGERR("FileInterner:: no backend\n");
return;
}
DocFetcher::RawDoc rawdoc;
if (!fetcher->fetch(cnf, idoc, rawdoc)) {
LOGERR("FileInterner:: fetcher failed\n");
return;
}
switch (rawdoc.kind) {
case DocFetcher::RawDoc::RDK_FILENAME:
init(rawdoc.data, &rawdoc.st, cnf, flags, &idoc.mimetype);
break;
case DocFetcher::RawDoc::RDK_DATA:
init(rawdoc.data, cnf, flags, idoc.mimetype);
break;
case DocFetcher::RawDoc::RDK_DATADIRECT:
// Note: only used for demo with the sample python external
// mbox indexer at this point. The external program is
// responsible for all the extraction process.
init(rawdoc.data, cnf, flags, idoc.mimetype);
m_direct = true;
break;
default:
LOGERR("FileInterner::FileInterner(idoc): bad rawdoc kind ??\n");
}
return;
}
bool FileInterner::makesig(RclConfig *cnf, const Rcl::Doc& idoc, string& sig)
{
DocFetcher *fetcher = docFetcherMake(cnf, idoc);
if (fetcher == 0) {
LOGERR("FileInterner::makesig no backend for doc\n");
return false;
}
bool ret = fetcher->makesig(cnf, idoc, sig);
delete fetcher;
return ret;
}
FileInterner::~FileInterner()
{
for (auto& entry: m_handlers) {
returnMimeHandler(entry);
}
delete m_uncomp;
// m_tempfiles will take care of itself
}
// Create a temporary file for a block of data (ie: attachment) found
// while walking the internal document tree, with a type for which the
// handler needs an actual file (ie : external script).
TempFile FileInterner::dataToTempFile(const string& dt, const string& mt)
{
// Create temp file with appropriate suffix for mime type
TempFile temp(m_cfg->getSuffixFromMimeType(mt));
if (!temp.ok()) {
LOGERR("FileInterner::dataToTempFile: cant create tempfile: " <<
temp.getreason() << "\n");
return TempFile();
}
string reason;
if (!stringtofile(dt, temp.filename(), reason)) {
LOGERR("FileInterner::dataToTempFile: stringtofile: " <<reason << "\n");
return TempFile();
}
return temp;
}
// See if the error string is formatted as a missing helper message,
// accumulate helper name if it is. The format of the message is:
// RECFILTERROR HELPERNOTFOUND program1 [program2 ...]
void FileInterner::checkExternalMissing(const string& msg, const string& mt)
{
LOGDEB2("checkExternalMissing: [" << msg << "]\n");
if (m_missingdatap && msg.find("RECFILTERROR") == 0) {
vector<string> verr;
stringToStrings(msg, verr);
if (verr.size() > 2) {
vector<string>::iterator it = verr.begin();
it++;
if (*it == "HELPERNOTFOUND") {
it++;
for (; it != verr.end(); it++) {
m_missingdatap->addMissing(*it, mt);
}
}
}
}
}
void FIMissingStore::getMissingExternal(string& out)
{
for (map<string, set<string> >::const_iterator it =
m_typesForMissing.begin(); it != m_typesForMissing.end(); it++) {
out += string(" ") + it->first;
}
trimstring(out);
}
void FIMissingStore::getMissingDescription(string& out)
{
out.erase();
for (map<string, set<string> >::const_iterator it =
m_typesForMissing.begin(); it != m_typesForMissing.end(); it++) {
out += it->first + " (";
set<string>::const_iterator it3;
for (it3 = it->second.begin();
it3 != it->second.end(); it3++) {
out += *it3 + " ";
}
trimstring(out);
out += ")";
out += "\n";
}
}
FIMissingStore::FIMissingStore(const string& in)
{
// The "missing" file is text. Each line defines a missing filter
// and the list of mime types actually encountered that needed it
// (see method getMissingDescription())
vector<string> lines;
stringToTokens(in, lines, "\n");
for (vector<string>::const_iterator it = lines.begin();
it != lines.end(); it++) {
// Lines from the file are like:
//
// filter name string (mime1 mime2)
//
// We can't be too sure that there will never be a parenthesis
// inside the filter string as this comes from the filter
// itself. The list part is safer, so we start from the end.
const string& line = *it;
string::size_type lastopen = line.find_last_of("(");
if (lastopen == string::npos)
continue;
string::size_type lastclose = line.find_last_of(")");
if (lastclose == string::npos || lastclose <= lastopen + 1)
continue;
string smtypes = line.substr(lastopen+1, lastclose - lastopen - 1);
vector<string> mtypes;
stringToTokens(smtypes, mtypes);
string filter = line.substr(0, lastopen);
trimstring(filter);
if (filter.empty())
continue;
for (vector<string>::const_iterator itt = mtypes.begin();
itt != mtypes.end(); itt++) {
m_typesForMissing[filter].insert(*itt);
}
}
}
// Helper for extracting a value from a map.
static inline bool getKeyValue(const map<string, string>& docdata,
const string& key, string& value)
{
auto it = docdata.find(key);
if (it != docdata.end()) {
value = it->second;
LOGDEB2("getKeyValue: [" << key << "]->[" << value << "]\n");
return true;
}
LOGDEB2("getKeyValue: no value for [" << key << "]\n");
return false;
}
// Copy most metadata fields from the top filter to the recoll
// doc. Some fields need special processing, because they go into
// struct fields instead of metadata entry, or because we don't want
// to copy them.
bool FileInterner::dijontorcl(Rcl::Doc& doc)
{
RecollFilter *df = m_handlers.back();
if (df == 0) {
//??
LOGERR("FileInterner::dijontorcl: null top handler ??\n");
return false;
}
for (const auto& ent : df->get_meta_data()) {
if (ent.first == cstr_dj_keycontent) {
doc.text = ent.second;
if (doc.fbytes.empty()) {
// It's normally set by walking the filter stack, in
// collectIpathAndMt, which was called before us. It
// can happen that the doc size is still empty at this
// point if the last container filter is directly
// returning text/plain content, so that there is no
// ipath-less filter at the top
lltodecstr(doc.text.length(), doc.fbytes);
LOGDEB("FileInterner::dijontorcl: fbytes->" << doc.fbytes <<
endl);
}
} else if (ent.first == cstr_dj_keymd) {
doc.dmtime = ent.second;
} else if (ent.first == cstr_dj_keyanc) {
doc.haschildren = true;
} else if (ent.first == cstr_dj_keyorigcharset) {
doc.origcharset = ent.second;
} else if (ent.first == cstr_dj_keyfn) {
// Only if not set during the stack walk
const string *fnp = 0;
if (!doc.peekmeta(Rcl::Doc::keyfn, &fnp) || fnp->empty())
doc.meta[Rcl::Doc::keyfn] = ent.second;
} else if (ent.first == cstr_dj_keymt ||
ent.first == cstr_dj_keycharset) {
// don't need/want these.
} else {
LOGDEB2("dijontorcl: " << m_cfg->fieldCanon(ent.first) << " -> " <<
ent.second << endl);
doc.addmeta(m_cfg->fieldCanon(ent.first), ent.second);
}
}
if (doc.meta[Rcl::Doc::keyabs].empty() &&
!doc.meta[cstr_dj_keyds].empty()) {
doc.meta[Rcl::Doc::keyabs] = doc.meta[cstr_dj_keyds];
doc.meta.erase(cstr_dj_keyds);
}
return true;
}
const set<string> nocopyfields{cstr_dj_keycontent, cstr_dj_keymd,
cstr_dj_keyanc, cstr_dj_keyorigcharset, cstr_dj_keyfn,
cstr_dj_keymt, cstr_dj_keycharset, cstr_dj_keyds};
static void copymeta(const RclConfig *cfg,Rcl::Doc& doc, const RecollFilter* hp)
{
for (const auto& entry : hp->get_meta_data()) {
if (nocopyfields.find(entry.first) == nocopyfields.end()) {
doc.addmeta(cfg->fieldCanon(entry.first), entry.second);
}
}
}
// Collect the ipath from the filter stack.
// While we're at it, we also set the mimetype and filename,
// which are special properties: we want to get them from the topmost
// doc with an ipath, not the last one which is usually text/plain We
// also set the author and modification time from the last doc which
// has them.
//
// The stack can contain objects with an ipath element (corresponding
// to actual embedded documents), and, towards the top, elements
// without an ipath element, for format translations of the last doc.
//
// The docsize is fetched from the first element without an ipath
// (first non container). If the last element directly returns
// text/plain so that there is no ipath-less element, the value will
// be set in dijontorcl().
//
// The whole thing is a bit messy but it's not obvious how it should
// be cleaned up as the "inheritance" rules inside the stack are
// actually complicated.
void FileInterner::collectIpathAndMT(Rcl::Doc& doc) const
{
LOGDEB2("FileInterner::collectIpathAndMT\n");
// Set to true if any element in the stack sets an ipath. (at least one of
// the docs is a compound).
bool hasipath = false;
if (!m_noxattrs) {
docFieldsFromXattrs(m_cfg, m_XAttrsFields, doc);
}
docFieldsFromMetaCmds(m_cfg, m_cmdFields, doc);
// If there is no ipath stack, the mimetype is the one from the
// file, else we'll change it further down.
doc.mimetype = m_mimetype;
string pathelprev;
for (unsigned int i = 0; i < m_handlers.size(); i++) {
const map<string, string>& docdata = m_handlers[i]->get_meta_data();
string ipathel;
getKeyValue(docdata, cstr_dj_keyipath, ipathel);
if (!ipathel.empty()) {
// Non-empty ipath. This stack element is for an
// actual embedded document, not a format translation.
hasipath = true;
doc.ipath += colon_hide(ipathel) + cstr_isep;
getKeyValue(docdata, cstr_dj_keymt, doc.mimetype);
getKeyValue(docdata, cstr_dj_keyfn, doc.meta[Rcl::Doc::keyfn]);
} else {
// We copy all the metadata from the topmost actual
// document: either the first if it has no ipath, or the
// last one with an ipath (before pure format
// translations). This would allow, for example mh_execm
// handlers to use setfield() instead of embedding
// metadata in the HTML meta tags.
if (i == 0 || !pathelprev.empty()) {
copymeta(m_cfg, doc, m_handlers[i]);
}
if (doc.fbytes.empty()) {
lltodecstr(m_handlers[i]->get_docsize(), doc.fbytes);
LOGDEB("collectIpath..: fbytes->" << doc.fbytes << endl);
}
}
// We set the author field from the innermost doc which has
// one: allows finding, e.g. an image attachment having no
// metadata by a search on the sender name. Only do this for
// actually embedded documents (avoid replacing values from
// metacmds for the topmost one). For a topmost doc, author
// will be merged by dijontorcl() later on. About same for
// dmtime, but an external value will be replaced, not
// augmented if dijontorcl() finds an internal value.
if (hasipath) {
getKeyValue(docdata, cstr_dj_keyauthor, doc.meta[Rcl::Doc::keyau]);
getKeyValue(docdata, cstr_dj_keymd, doc.dmtime);
}
pathelprev = ipathel;
}
if (hasipath) {
// Trim ending ipath separator
LOGDEB2("IPATH [" << doc.ipath << "]\n");
if (doc.ipath.back() == cstr_isep[0]) {
doc.ipath.erase(doc.ipath.end()-1);
}
}
}
// Remove handler from stack. Clean up temp file if needed.
void FileInterner::popHandler()
{
if (m_handlers.empty())
return;
size_t i = m_handlers.size() - 1;
if (m_tmpflgs[i]) {
m_tempfiles.pop_back();
m_tmpflgs[i] = false;
}
returnMimeHandler(m_handlers.back());
m_handlers.pop_back();
}
enum addResols {ADD_OK, ADD_CONTINUE, ADD_BREAK, ADD_ERROR};
// Just got document from current top handler. See what type it is,
// and possibly add a filter/handler to the stack
int FileInterner::addHandler()
{
const map<string, string>& docdata = m_handlers.back()->get_meta_data();
string charset, mimetype;
getKeyValue(docdata, cstr_dj_keycharset, charset);
getKeyValue(docdata, cstr_dj_keymt, mimetype);
LOGDEB("FileInterner::addHandler: back() is " << mimetype <<
" target [" << m_targetMType << "]\n");
// If we find a document of the target type (text/plain in
// general), we're done decoding. If we hit text/plain, we're done
// in any case
if (!stringicmp(mimetype, m_targetMType) ||
!stringicmp(mimetype, cstr_textplain)) {
m_reachedMType = mimetype;
LOGDEB1("FileInterner::addHandler: target reached\n");
return ADD_BREAK;
}
// We need to stack another handler. Check stack size
if (m_handlers.size() >= MAXHANDLERS) {
// Stack too big. Skip this and go on to check if there is
// something else in the current back()
LOGERR("FileInterner::addHandler: stack too high\n");
return ADD_CONTINUE;
}
// We must not filter out HTML when it is an intermediate
// conversion format. We discriminate between e.g. an HTML email
// attachment (needs filtering) and a result of pdf conversion
// (must process) by looking at the last ipath element: a
// conversion will have an empty one (same test as in
// collectIpathAndMT).
string ipathel;
getKeyValue(docdata, cstr_dj_keyipath, ipathel);
bool dofilter = !m_forPreview &&
(mimetype.compare(cstr_texthtml) || !ipathel.empty());
RecollFilter *newflt = getMimeHandler(mimetype, m_cfg, dofilter);
if (!newflt) {
// If we can't find a handler, this doc can't be handled
// but there can be other ones so we go on
LOGINFO("FileInterner::addHandler: no filter for [" << mimetype <<
"]\n");
return ADD_CONTINUE;
}
newflt->set_property(Dijon::Filter::OPERATING_MODE,
m_forPreview ? "view" : "index");
if (!charset.empty())
newflt->set_property(Dijon::Filter::DEFAULT_CHARSET, charset);
// Get current content: we don't use getkeyvalue() here to avoid
// copying the text, which may be big.
string ns;
const string *txt = &ns;
{
map<string,string>::const_iterator it;
it = docdata.find(cstr_dj_keycontent);
if (it != docdata.end())
txt = &it->second;
}
bool setres = false;
newflt->set_docsize(txt->length());
if (newflt->is_data_input_ok(Dijon::Filter::DOCUMENT_STRING)) {
setres = newflt->set_document_string(mimetype, *txt);
} else if (newflt->is_data_input_ok(Dijon::Filter::DOCUMENT_DATA)) {
setres = newflt->set_document_data(mimetype,txt->c_str(),txt->length());
} else if (newflt->is_data_input_ok(Dijon::Filter::DOCUMENT_FILE_NAME)) {
TempFile temp = dataToTempFile(*txt, mimetype);
if (temp.ok() &&
(setres = newflt->set_document_file(mimetype, temp.filename()))) {
m_tmpflgs[m_handlers.size()] = true;
m_tempfiles.push_back(temp);
// Hack here, but really helps perfs: if we happen to
// create a temp file for, ie, an image attachment, keep
// it around for preview to use it through get_imgtmp()
if (!mimetype.compare(0, 6, "image/")) {
m_imgtmp = m_tempfiles.back();
}
}
}
if (!setres) {
LOGINFO("FileInterner::addHandler: set_doc failed inside [" << m_fn <<
"] for mtype " << mimetype << "\n");
delete newflt;
if (m_forPreview)
return ADD_ERROR;
return ADD_CONTINUE;
}
// add handler and go on, maybe this one will give us text...
m_handlers.push_back(newflt);
LOGDEB1("FileInterner::addHandler: added\n");
return ADD_OK;
}
// Information and debug after a next_document error
void FileInterner::processNextDocError(Rcl::Doc &doc)
{
collectIpathAndMT(doc);
m_reason = m_handlers.back()->get_error();
checkExternalMissing(m_reason, doc.mimetype);
LOGERR("FileInterner::internfile: next_document error [" << m_fn <<
(doc.ipath.empty() ? "" : "|") << doc.ipath << "] " <<
doc.mimetype << " " << m_reason << "\n");
}
FileInterner::Status FileInterner::internfile(Rcl::Doc& doc,const string& ipath)
{
LOGDEB("FileInterner::internfile. ipath [" << ipath << "]\n");
// Get rid of possible image tempfile from older call
m_imgtmp = TempFile();
if (m_handlers.size() < 1) {
// Just means the constructor failed
LOGDEB("FileInterner::internfile: no handler: constructor failed\n");
return FIError;
}
// Input Ipath vector when retrieving a given subdoc for previewing
// Note that the vector is big enough for the maximum stack. All values
// over the last significant one are ""
// We set the ipath for the first handler here, others are set
// when they're pushed on the stack
vector<string> vipath;
if (!ipath.empty() && !m_direct) {
vector<string> lipath;
stringToTokens(ipath, lipath, cstr_isep, true);
for (vector<string>::iterator it = lipath.begin();
it != lipath.end(); it++) {
*it = colon_restore(*it);
}
vipath.insert(vipath.begin(), lipath.begin(), lipath.end());
if (!m_handlers.back()->skip_to_document(vipath[m_handlers.size()-1])){
LOGERR("FileInterner::internfile: can't skip\n");
return FIError;
}
}
// Try to get doc from the topmost handler
// Security counter: looping happens when we stack one other
// handler or when walking the file document tree without finding
// something to index (typical exemple: email with multiple image
// attachments and no image filter installed). So we need to be
// quite generous here, especially because there is another
// security in the form of a maximum handler stack size.
int loop = 0;
while (!m_handlers.empty()) {
CancelCheck::instance().checkCancel();
if (loop++ > 1000) {
LOGERR("FileInterner:: looping!\n");
return FIError;
}
// If there are no more docs at the current top level we pop and
// see if there is something at the previous one
if (!m_handlers.back()->has_documents()) {
// If looking for a specific doc, this is an error. Happens if
// the index is stale, and the ipath points to the wrong message
// for exemple (one with less attachments)
if (m_forPreview) {
m_reason += "Requested document does not exist. ";
m_reason += m_handlers.back()->get_error();
LOGERR("FileInterner: requested document does not exist\n");
return FIError;
}
popHandler();
continue;
}
// While indexing, don't stop on next_document() error. There
// might be ie an error while decoding an attachment, but we
// still want to process the rest of the mbox! For preview: fatal.
if (!m_handlers.back()->next_document()) {
processNextDocError(doc);
if (m_forPreview) {
m_reason += "Requested document does not exist. ";
m_reason += m_handlers.back()->get_error();
LOGERR("FileInterner: requested document does not exist\n");
return FIError;
}
popHandler();
continue;
}
// Look at the type for the next document and possibly add
// handler to stack.
switch (addHandler()) {
case ADD_OK: // Just go through: handler has been stacked, use it
LOGDEB2("addHandler returned OK\n");
break;
case ADD_CONTINUE:
// forget this doc and retrieve next from current handler
// (ipath stays same)
LOGDEB2("addHandler returned CONTINUE\n");
continue;
case ADD_BREAK:
// Stop looping: doc type ok, need complete its processing
// and return it
LOGDEB2("addHandler returned BREAK\n");
goto breakloop; // when you have to you have to
case ADD_ERROR:
LOGDEB2("addHandler returned ERROR\n");
return FIError;
}
// If we have an ipath, meaning that we are seeking a specific
// document (ie: previewing a search result), we may have to
// seek to the correct entry of a compound doc (ie: archive or
// mail). When we are out of ipath entries, we stop seeking,
// the handlers stack may still grow for translation (ie: if
// the target doc is msword, we'll still stack the
// word-to-text translator).
if (!ipath.empty()) {
if (m_handlers.size() <= vipath.size() &&
!m_handlers.back()->skip_to_document(vipath[m_handlers.size()-1])) {
LOGERR("FileInterner::internfile: can't skip\n");
return FIError;
}
}
}
breakloop:
if (m_handlers.empty()) {
LOGDEB("FileInterner::internfile: conversion ended with no doc\n");
return FIError;
}
// Compute ipath and significant mimetype. ipath is returned
// through doc.ipath. We also retrieve some metadata fields from
// the ancesters (like date or author). This is useful for email
// attachments. The values will be replaced by those internal to
// the document (by dijontorcl()) if any, so the order of calls is
// important. We used to only do this when indexing, but the aux
// fields like filename and author may be interesting when
// previewing too
collectIpathAndMT(doc);
if (m_forPreview) {
doc.mimetype = m_reachedMType;
}
// Keep this AFTER collectIpathAndMT
dijontorcl(doc);
// Possibly destack so that we can test for FIDone. While doing this
// possibly set aside an ancestor html text (for the GUI preview)
while (!m_handlers.empty() && !m_handlers.back()->has_documents()) {
if (m_forPreview) {
MimeHandlerHtml *hth =
dynamic_cast<MimeHandlerHtml*>(m_handlers.back());
if (hth) {
m_html = hth->get_html();
}
}
popHandler();
}
if (m_handlers.empty())
return FIDone;
else
return FIAgain;
}
bool FileInterner::tempFileForMT(TempFile& otemp, RclConfig* cnf,
const string& mimetype)
{
TempFile temp(cnf->getSuffixFromMimeType(mimetype));
if (!temp.ok()) {
LOGERR("FileInterner::tempFileForMT: can't create temp file\n");
return false;
}
otemp = temp;
return true;
}
// Static method, creates a FileInterner object to do the job.
bool FileInterner::idocToFile(
TempFile& otemp, const string& tofile, RclConfig *cnf,
const Rcl::Doc& idoc, bool uncompress)
{
LOGDEB("FileInterner::idocToFile\n");
if (idoc.ipath.empty()) {
// Because of the mandatory first conversion in the
// FileInterner constructor, need to use a specific method.
return topdocToFile(otemp, tofile, cnf, idoc, uncompress);
}
// We set FIF_forPreview for consistency with the previous version
// which determined this by looking at mtype!=null. Probably
// doesn't change anything in this case.
FileInterner interner(idoc, cnf, FIF_forPreview);
interner.setTargetMType(idoc.mimetype);
return interner.interntofile(otemp, tofile, idoc.ipath, idoc.mimetype);
}
// This is only needed because the FileInterner constructor always performs
// the first conversion, so that we need another approach for accessing the
// original document (targetmtype won't do).
bool FileInterner::topdocToFile(
TempFile& otemp, const string& tofile,
RclConfig *cnf, const Rcl::Doc& idoc, bool uncompress)
{
DocFetcher *fetcher = docFetcherMake(cnf, idoc);
if (fetcher == 0) {
LOGERR("FileInterner::topdocToFile no backend\n");
return false;
}
DocFetcher::RawDoc rawdoc;
if (!fetcher->fetch(cnf, idoc, rawdoc)) {
LOGERR("FileInterner::topdocToFile fetcher failed\n");
return false;
}
const char *filename = "";
TempFile temp;
if (tofile.empty()) {
if (!tempFileForMT(temp, cnf, idoc.mimetype)) {
return false;
}
filename = temp.filename();
} else {
filename = tofile.c_str();
}
string reason;
switch (rawdoc.kind) {
case DocFetcher::RawDoc::RDK_FILENAME: {
string fn(rawdoc.data);
TempFile temp;
if (uncompress && isCompressed(fn, cnf)) {
if (!maybeUncompressToTemp(temp, fn, cnf, idoc)) {
LOGERR("FileInterner::idocToFile: uncompress failed\n");
return false;
}
}
fn = temp.ok() ? temp.filename() : rawdoc.data;
if (!copyfile(fn.c_str(), filename, reason)) {
LOGERR("FileInterner::idocToFile: copyfile: " << reason << "\n");
return false;
}
}
break;
case DocFetcher::RawDoc::RDK_DATA:
case DocFetcher::RawDoc::RDK_DATADIRECT:
if (!stringtofile(rawdoc.data, filename, reason)) {
LOGERR("FileInterner::idocToFile: stringtofile: " << reason <<"\n");
return false;
}
break;
default:
LOGERR("FileInterner::FileInterner(idoc): bad rawdoc kind ??\n");
}
if (tofile.empty())
otemp = temp;
return true;
}
bool FileInterner::interntofile(TempFile& otemp, const string& tofile,
const string& ipath, const string& mimetype)
{
if (!ok()) {
LOGERR("FileInterner::interntofile: constructor failed\n");
return false;
}
Rcl::Doc doc;
Status ret = internfile(doc, ipath);
if (ret == FileInterner::FIError) {
LOGERR("FileInterner::interntofile: internfile() failed\n");
return false;
}
// Specialcase text/html. This is to work around a bug that will
// get fixed some day: the internfile constructor always loads the
// first handler so that at least one conversion is always
// performed (and the access to the original data may be lost). A
// common case is an "Open" on an HTML file (we end up
// with text/plain content). As the HTML version is saved in this
// case, use it.
if (!stringlowercmp(cstr_texthtml, mimetype) && !get_html().empty()) {
doc.text = get_html();
doc.mimetype = cstr_texthtml;
}
const char *filename;
TempFile temp;
if (tofile.empty()) {
if (!tempFileForMT(temp, m_cfg, mimetype)) {
return false;
}
filename = temp.filename();
} else {
filename = tofile.c_str();
}
string reason;
if (!stringtofile(doc.text, filename, reason)) {
LOGERR("FileInterner::interntofile: stringtofile : " << reason << "\n");
return false;
}
if (tofile.empty())
otemp = temp;
return true;
}
bool FileInterner::isCompressed(const string& fn, RclConfig *cnf)
{
LOGDEB("FileInterner::isCompressed: [" << fn << "]\n");
struct stat st;
if (path_fileprops(fn, &st) < 0) {
LOGERR("FileInterner::isCompressed: can't stat [" << fn << "]\n");
return false;
}
string l_mime = mimetype(fn, &st, cnf, true);
if (l_mime.empty()) {
LOGERR("FileInterner::isUncompressed: can't get mime for [" << fn <<
"]\n");
return false;
}
vector<string> ucmd;
if (cnf->getUncompressor(l_mime, ucmd)) {
return true;
}
return false;
}
// Static.
bool FileInterner::maybeUncompressToTemp(TempFile& temp, const string& fn,
RclConfig *cnf, const Rcl::Doc& doc)
{
LOGDEB("FileInterner::maybeUncompressToTemp: [" << fn << "]\n");
struct stat st;
if (path_fileprops(fn.c_str(), &st) < 0) {
LOGERR("FileInterner::maybeUncompressToTemp: can't stat [" <<fn<<"]\n");
return false;
}
string l_mime = mimetype(fn, &st, cnf, true);
if (l_mime.empty()) {
LOGERR("FileInterner::maybeUncompress.: can't id. mime for [" <<
fn << "]\n");
return false;
}
vector<string>ucmd;
if (!cnf->getUncompressor(l_mime, ucmd)) {
return true;
}
// Check for compressed size limit
int maxkbs = -1;
if (cnf->getConfParam("compressedfilemaxkbs", &maxkbs) &&
maxkbs >= 0 && int(st.st_size / 1024) > maxkbs) {
LOGINFO("FileInterner:: " << fn << " over size limit " << maxkbs <<
" kbs\n");
return false;
}
temp = TempFile(cnf->getSuffixFromMimeType(doc.mimetype));
if (!temp.ok()) {
LOGERR("FileInterner: cant create temporary file\n");
return false;
}
Uncomp uncomp;
string uncomped;
if (!uncomp.uncompressfile(fn, ucmd, uncomped)) {
return false;
}
// uncompressfile choses the output file name, there is good
// reason for this, but it's not nice here. Have to move, the
// uncompressed file, hopefully staying on the same dev.
string reason;
if (!renameormove(uncomped.c_str(), temp.filename(), reason)) {
LOGERR("FileInterner::maybeUncompress: move [" << uncomped <<
"] -> [" << temp.filename() << "] failed: " << reason << "\n");
return false;
}
return true;
}
#else
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <string>
#include "safesysstat.h"
using namespace std;
#include "log.h"
#include "rclinit.h"
#include "internfile.h"
#include "rclconfig.h"
#include "rcldoc.h"
static string thisprog;
static string usage =
" internfile <filename> [ipath]\n"
" \n\n"
;
static void
Usage(void)
{
cerr << thisprog << ": usage:\n" << usage;
exit(1);
}
static int op_flags;
#define OPT_q 0x1
RclConfig *config;
int main(int argc, char **argv)
{
thisprog = argv[0];
argc--; argv++;
while (argc > 0 && **argv == '-') {
(*argv)++;
if (!(**argv))
/* Cas du "adb - core" */
Usage();
while (**argv)
switch (*(*argv)++) {
default: Usage(); break;
}
argc--; argv++;
}
DebugLog::getdbl()->setloglevel(DEBDEB1);
DebugLog::setfilename("stderr");
if (argc < 1)
Usage();
string fn(*argv++);
argc--;
string ipath;
if (argc >= 1) {
ipath.append(*argv++);
argc--;
}
string reason;
config = recollinit(0, 0, reason);
if (config == 0 || !config->ok()) {
string str = "Configuration problem: ";
str += reason;
fprintf(stderr, "%s\n", str.c_str());
exit(1);
}
struct stat st;
if (stat(fn.c_str(), &st)) {
perror("stat");
exit(1);
}
FileInterner interner(fn, &st, config, 0);
Rcl::Doc doc;
FileInterner::Status status = interner.internfile(doc, ipath);
switch (status) {
case FileInterner::FIDone:
case FileInterner::FIAgain:
break;
case FileInterner::FIError:
default:
fprintf(stderr, "internfile failed\n");
exit(1);
}
cout << "doc.url [[[[" << doc.url <<
"]]]]\n-----------------------------------------------------\n" <<
"doc.ipath [[[[" << doc.ipath <<
"]]]]\n-----------------------------------------------------\n" <<
"doc.mimetype [[[[" << doc.mimetype <<
"]]]]\n-----------------------------------------------------\n" <<
"doc.fmtime [[[[" << doc.fmtime <<
"]]]]\n-----------------------------------------------------\n" <<
"doc.dmtime [[[[" << doc.dmtime <<
"]]]]\n-----------------------------------------------------\n" <<
"doc.origcharset [[[[" << doc.origcharset <<
"]]]]\n-----------------------------------------------------\n" <<
"doc.meta[title] [[[[" << doc.meta["title"] <<
"]]]]\n-----------------------------------------------------\n" <<
"doc.meta[keywords] [[[[" << doc.meta["keywords"] <<
"]]]]\n-----------------------------------------------------\n" <<
"doc.meta[abstract] [[[[" << doc.meta["abstract"] <<
"]]]]\n-----------------------------------------------------\n" <<
"doc.text [[[[" << doc.text << "]]]]\n";
}
#endif // TEST_INTERNFILE