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internfile.cpp    1272 lines (1161 with data), 40.9 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 <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <string>
#include <iostream>
#include <map>
#ifndef NO_NAMESPACES
using namespace std;
#endif /* NO_NAMESPACES */
#include "cstr.h"
#include "internfile.h"
#include "rcldoc.h"
#include "mimetype.h"
#include "debuglog.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"
#ifdef RCL_USE_XATTR
#include "pxattr.h"
#endif // RCL_USE_XATTR
// 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;
}
#ifdef RCL_USE_XATTR
void FileInterner::reapXAttrs(const string& path)
{
LOGDEB2(("FileInterner::reapXAttrs: [%s]\n", path.c_str()));
// Retrieve xattrs names from files and mapping table from config
vector<string> xnames;
if (!pxattr::list(path, &xnames)) {
LOGERR(("FileInterner::reapXattrs: pxattr::list: errno %d\n", errno));
return;
}
const map<string, string>& xtof = m_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 (vector<string>::const_iterator it = xnames.begin();
it != xnames.end(); it++) {
string key = *it;
map<string, string>::const_iterator mit = xtof.find(*it);
if (mit != xtof.end()) {
if (mit->second.empty()) {
continue;
} else {
key = mit->second;
}
}
string value;
if (!pxattr::get(path, *it, &value, pxattr::PXATTR_NOFOLLOW)) {
LOGERR(("FileInterner::reapXattrs: pxattr::get failed"
"for %s, errno %d\n", (*it).c_str(), errno));
continue;
}
// Encode should we ?
m_XAttrsFields[key] = value;
LOGDEB2(("FileInterner::reapXAttrs: [%s] -> [%s]\n",
key.c_str(), value.c_str()));
}
}
#endif // RCL_USE_XATTR
// This is used when the user wants to retrieve a search result doc's parent
// (ie message having a given attachment)
bool FileInterner::getEnclosing(const string &url, const string &ipath,
string &eurl, string &eipath, string& udi)
{
eurl = url;
eipath = ipath;
string::size_type colon;
LOGDEB(("FileInterner::getEnclosing(): url [%s] ipath [%s]\n",
url.c_str(), eipath.c_str()));
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(eurl), eipath, udi);
LOGDEB(("FileInterner::getEnclosing() after: [%s]\n", eipath.c_str()));
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;
}
}
// Uncompress input file into a temporary one, by executing the appropriate
// script.
static bool uncompressfile(RclConfig *conf, const string& ifn,
const vector<string>& cmdv, TempDir& tdir,
string& tfile)
{
// Make sure tmp dir is empty. we guarantee this to filters
if (!tdir.ok() || !tdir.wipe()) {
LOGERR(("uncompressfile: can't clear temp dir %s\n", tdir.dirname()));
return false;
}
string cmd = cmdv.front();
// Substitute file name and temp dir in command elements
vector<string>::const_iterator it = cmdv.begin();
++it;
vector<string> args;
map<char, string> subs;
subs['f'] = ifn;
subs['t'] = tdir.dirname();
for (; it != cmdv.end(); it++) {
string ns;
pcSubst(*it, ns, subs);
args.push_back(ns);
}
// Execute command and retrieve output file name, check that it exists
ExecCmd ex;
int status = ex.doexec(cmd, args, 0, &tfile);
if (status || tfile.empty()) {
LOGERR(("uncompressfile: doexec: failed for [%s] status 0x%x\n",
ifn.c_str(), status));
if (!tdir.wipe()) {
LOGERR(("uncompressfile: wipedir failed\n"));
}
return false;
}
if (tfile[tfile.length() - 1] == '\n')
tfile.erase(tfile.length() - 1, 1);
return true;
}
// Delete temporary uncompressed file
void FileInterner::tmpcleanup()
{
if (m_tfile.empty())
return;
if (unlink(m_tfile.c_str()) < 0) {
LOGERR(("FileInterner::tmpcleanup: unlink(%s) errno %d\n",
m_tfile.c_str(), errno));
return;
}
}
// 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,
TempDir& td, int flags, const string *imime)
: m_tdir(td), m_ok(false), m_missingdatap(0)
{
LOGDEB0(("FileInterner::FileInterner(fn=%s)\n", fn.c_str()));
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 beagle 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 [%s] mime [%s] preview %d\n",
f.c_str(), imime?imime->c_str() : "(null)", m_forPreview));
// 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;
}
size_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 (!uncompressfile(m_cfg, m_fn, ucmd, m_tdir, m_tfile)) {
return;
}
LOGDEB1(("FileInterner:: after ucomp: m_tdir %s, tfile %s\n",
m_tdir.dirname(), m_tfile.c_str()));
m_fn = m_tfile;
// Stat the uncompressed file, mainly to get the size
struct stat ucstat;
if (stat(m_fn.c_str(), &ucstat) != 0) {
LOGERR(("FileInterner: can't stat the uncompressed file"
"[%s] errno %d\n", m_fn.c_str(), errno));
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:: %s over size limit %d kbs\n",
m_fn.c_str(), maxkbs));
}
}
}
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: [%s]\n", m_fn.c_str()));
}
// Look for appropriate handler (might still return empty)
m_mimetype = l_mime;
Dijon::Filter *df = getMimeHandler(l_mime, m_cfg, !m_forPreview);
if (!df or df->is_unknown()) {
// No real handler for this type, for now :(
LOGDEB(("FileInterner:: unprocessed mime: [%s] [%s]\n",
l_mime.c_str(), f.c_str()));
if (!df)
return;
}
df->set_property(Dijon::Filter::OPERATING_MODE,
m_forPreview ? "view" : "index");
df->set_property(Dijon::Filter::DJF_UDI, udi);
#ifdef RCL_USE_XATTR
// Get fields computed from extended attributes. We use the
// original file, not the m_fn which may be the uncompressed temp
// file
reapXAttrs(f);
#endif //RCL_USE_XATTR
df->set_docsize(docsize);
if (!df->set_document_file(m_fn)) {
delete df;
LOGERR(("FileInterner:: error converting %s\n", m_fn.c_str()));
return;
}
m_handlers.push_back(df);
LOGDEB(("FileInterner:: init ok %s [%s]\n", l_mime.c_str(), m_fn.c_str()));
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,
TempDir& td, int flags, const string& imime)
: m_tdir(td), m_ok(false), m_missingdatap(0)
{
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)
Dijon::Filter *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 [%s]\n", m_mimetype.c_str()));
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(data);
} else if (df->is_data_input_ok(Dijon::Filter::DOCUMENT_DATA)) {
result = df->set_document_data(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.isNotNull() &&
(result = df->set_document_file(temp->filename()))) {
m_tmpflgs[m_handlers.size()] = true;
m_tempfiles.push_back(temp);
}
}
if (!result) {
LOGINFO(("FileInterner:: set_doc failed inside for mtype %s\n",
m_mimetype.c_str()));
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);
// Initialize handler stack.
m_handlers.reserve(MAXHANDLERS);
for (unsigned int i = 0; i < MAXHANDLERS; i++)
m_tmpflgs[i] = false;
m_targetMType = cstr_textplain;
}
FileInterner::FileInterner(const Rcl::Doc& idoc, RclConfig *cnf,
TempDir& td, int flags)
: m_tdir(td), m_ok(false), m_missingdatap(0)
{
LOGDEB0(("FileInterner::FileInterner(idoc)\n"));
initcommon(cnf, flags);
DocFetcher *fetcher = docFetcherMake(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;
default:
LOGERR(("FileInterner::FileInterner(idoc): bad rawdoc kind ??\n"));
}
return;
}
bool FileInterner::makesig(RclConfig *cnf, const Rcl::Doc& idoc, string& sig)
{
DocFetcher *fetcher = docFetcherMake(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()
{
tmpcleanup();
for (vector<Dijon::Filter*>::iterator it = m_handlers.begin();
it != m_handlers.end(); it++) {
returnMimeHandler(*it);
}
// 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(new TempFileInternal(m_cfg->getSuffixFromMimeType(mt)));
if (!temp->ok()) {
LOGERR(("FileInterner::dataToTempFile: cant create tempfile: %s\n",
temp->getreason().c_str()));
return TempFile();
}
int fd = open(temp->filename(), O_WRONLY);
if (fd < 0) {
LOGERR(("FileInterner::dataToTempFile: open(%s) failed errno %d\n",
temp->filename(), errno));
return TempFile();
}
if (write(fd, dt.c_str(), dt.length()) != (int)dt.length()) {
close(fd);
LOGERR(("FileInterner::dataToTempFile: write to %s failed errno %d\n",
temp->filename(), errno));
return TempFile();
}
close(fd);
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: [%s]\n", msg.c_str()));
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)
{
map<string,string>::const_iterator it;
it = docdata.find(key);
if (it != docdata.end()) {
value = it->second;
LOGDEB2(("getKeyValue: [%s]->[%s]\n", key.c_str(), value.c_str()));
return true;
}
LOGDEB2(("getKeyValue: no value for [%s]\n", key.c_str()));
return false;
}
bool FileInterner::dijontorcl(Rcl::Doc& doc)
{
Dijon::Filter *df = m_handlers.back();
if (df == 0) {
//??
LOGERR(("FileInterner::dijontorcl: null top handler ??\n"));
return false;
}
const map<string, string>& docdata = df->get_meta_data();
for (map<string,string>::const_iterator it = docdata.begin();
it != docdata.end(); it++) {
if (it->first == cstr_dj_keycontent) {
doc.text = it->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
char cbuf[30];
sprintf(cbuf, "%d", int(doc.text.length()));
doc.fbytes = cbuf;
}
} else if (it->first == cstr_dj_keymd) {
doc.dmtime = it->second;
} else if (it->first == cstr_dj_keyorigcharset) {
doc.origcharset = it->second;
} else if (it->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] = it->second;
} else if (it->first == cstr_dj_keymt ||
it->first == cstr_dj_keycharset) {
// don't need/want these.
} else {
doc.addmeta(m_cfg->fieldCanon(it->first), it->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;
}
// Collect the ipath from the current path in the document tree.
// 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 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"));
bool hasipath = false;
#ifdef RCL_USE_XATTR
// Set fields from extended file attributes.
// These can be later augmented by values from inside the file
for (map<string,string>::const_iterator it = m_XAttrsFields.begin();
it != m_XAttrsFields.end(); it++) {
LOGDEB1(("Internfile:: setting [%s] from xattrs value [%s]\n",
m_cfg->fieldCanon(it->first).c_str(), it->second.c_str()));
doc.meta[m_cfg->fieldCanon(it->first)] = it->second;
}
#endif //RCL_USE_XATTR
// If there is no ipath stack, the mimetype is the one from the file
doc.mimetype = m_mimetype;
string ipathel;
for (vector<Dijon::Filter*>::const_iterator hit = m_handlers.begin();
hit != m_handlers.end(); hit++) {
const map<string, string>& docdata = (*hit)->get_meta_data();
if (getKeyValue(docdata, cstr_dj_keyipath, ipathel)) {
if (!ipathel.empty()) {
// We have a non-empty ipath
hasipath = true;
getKeyValue(docdata, cstr_dj_keymt, doc.mimetype);
getKeyValue(docdata, cstr_dj_keyfn, doc.meta[Rcl::Doc::keyfn]);
} else {
if (doc.fbytes.empty())
getKeyValue(docdata, cstr_dj_keydocsize, doc.fbytes);
}
doc.ipath += colon_hide(ipathel) + cstr_isep;
} else {
if (doc.fbytes.empty())
getKeyValue(docdata, cstr_dj_keydocsize, doc.fbytes);
doc.ipath += cstr_isep;
}
getKeyValue(docdata, cstr_dj_keyauthor, doc.meta[Rcl::Doc::keyau]);
getKeyValue(docdata, cstr_dj_keymd, doc.dmtime);
}
// Trim empty tail elements in ipath.
if (hasipath) {
LOGDEB2(("IPATH [%s]\n", doc.ipath.c_str()));
string::size_type sit = doc.ipath.find_last_not_of(cstr_isep);
if (sit == string::npos)
doc.ipath.erase();
else if (sit < doc.ipath.length() -1)
doc.ipath.erase(sit+1);
} else {
doc.ipath.erase();
}
}
// Remove handler from stack. Clean up temp file if needed.
void FileInterner::popHandler()
{
if (m_handlers.empty())
return;
int 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: next_doc is %s target [%s]\n",
mimetype.c_str(), m_targetMType.c_str()));
// 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;
}
Dijon::Filter *newflt = getMimeHandler(mimetype, m_cfg);
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 [%s]\n",
mimetype.c_str()));
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(*txt);
} else if (newflt->is_data_input_ok(Dijon::Filter::DOCUMENT_DATA)) {
setres = newflt->set_document_data(txt->c_str(), txt->length());
} else if (newflt->is_data_input_ok(Dijon::Filter::DOCUMENT_FILE_NAME)) {
TempFile temp = dataToTempFile(*txt, mimetype);
if (temp.isNotNull() &&
(setres = newflt->set_document_file(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 %s "
" for mtype %s\n", m_fn.c_str(), mimetype.c_str()));
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 "
"[%s%s%s] %s %s\n", m_fn.c_str(), doc.ipath.empty() ? "" : "|",
doc.ipath.c_str(), doc.mimetype.c_str(), m_reason.c_str()));
}
FileInterner::Status FileInterner::internfile(Rcl::Doc& doc, const string& ipath)
{
LOGDEB(("FileInterner::internfile. ipath [%s]\n", ipath.c_str()));
// Get rid of possible image tempfile from older call
m_imgtmp.release();
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;
int vipathidx = 0;
if (!ipath.empty()) {
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;
}
// Temporary while we fix backend things
static string urltolocalpath(string url)
{
return url.substr(7, string::npos);
}
// Extract subdoc out of multidoc into temporary file.
// We do the usual internfile stuff: create a temporary directory,
// then create an interner and call internfile. The target mtype is set to
// the input mtype, so that no data conversion is performed.
// We then write the data out of the resulting document into the output file.
// There are two temporary objects:
// - The internfile temporary directory gets destroyed by its destructor
// - The output temporary file which is held in a reference-counted
// object and will be deleted when done with.
bool FileInterner::idocToFile(TempFile& otemp, const string& tofile,
RclConfig *cnf, const Rcl::Doc& idoc)
{
LOGDEB(("FileInterner::idocToFile\n"));
idoc.dump();
TempDir tmpdir;
// 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, tmpdir, FIF_forPreview);
interner.setTargetMType(idoc.mimetype);
return interner.interntofile(otemp, tofile, idoc.ipath, idoc.mimetype);
}
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: internfile initialisation does not check
// targetmtype, so that at least one conversion is always
// performed. A common case would be an "Open" on an html file
// (we'd end up with text/plain content). As the html version is
// saved in this case, use it.
if (!stringlowercmp("text/html", mimetype) && !get_html().empty()) {
doc.text = get_html();
doc.mimetype = "text/html";
}
string filename;
TempFile temp;
if (tofile.empty()) {
TempFile temp1(new TempFileInternal(
m_cfg->getSuffixFromMimeType(mimetype)));
temp = temp1;
if (!temp->ok()) {
LOGERR(("FileInterner::interntofile: can't create temp file\n"));
return false;
}
filename = temp->filename();
} else {
filename = tofile;
}
int fd = open(filename.c_str(), O_WRONLY|O_CREAT, 0600);
if (fd < 0) {
LOGERR(("FileInterner::interntofile: open(%s) failed errno %d\n",
filename.c_str(), errno));
return false;
}
const string& dt = doc.text;
if (write(fd, dt.c_str(), dt.length()) != (int)dt.length()) {
close(fd);
LOGERR(("FileInterner::interntofile: write to %s failed errno %d\n",
filename.c_str(), errno));
return false;
}
close(fd);
if (tofile.empty())
otemp = temp;
return true;
}
bool FileInterner::isCompressed(const string& fn, RclConfig *cnf)
{
LOGDEB(("FileInterner::isCompressed: [%s]\n", fn.c_str()));
struct stat st;
if (stat(fn.c_str(), &st) < 0) {
LOGERR(("FileInterner::isCompressed: can't stat [%s]\n", fn.c_str()));
return false;
}
string l_mime = mimetype(fn, &st, cnf, true);
if (l_mime.empty()) {
LOGERR(("FileInterner::isUncompressed: can't get mime for [%s]\n",
fn.c_str()));
return false;
}
vector<string> ucmd;
if (cnf->getUncompressor(l_mime, ucmd)) {
return true;
}
return false;
}
bool FileInterner::maybeUncompressToTemp(TempFile& temp, const string& fn,
RclConfig *cnf, const Rcl::Doc& doc)
{
LOGDEB(("FileInterner::maybeUncompressToTemp: [%s]\n", fn.c_str()));
struct stat st;
if (stat(fn.c_str(), &st) < 0) {
LOGERR(("FileInterner::maybeUncompressToTemp: can't stat [%s]\n",
fn.c_str()));
return false;
}
string l_mime = mimetype(fn, &st, cnf, true);
if (l_mime.empty()) {
LOGERR(("FileInterner::maybeUncompress.: can't id. mime for [%s]\n",
fn.c_str()));
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:: %s over size limit %d kbs\n",
fn.c_str(), maxkbs));
return false;
}
TempDir tmpdir;
temp =
TempFile(new TempFileInternal(cnf->getSuffixFromMimeType(doc.mimetype)));
if (!tmpdir.ok() || !temp->ok()) {
LOGERR(("FileInterner: cant create temporary file/dir"));
return false;
}
string uncomped;
if (!uncompressfile(cnf, fn, ucmd, tmpdir, 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 [%s] -> [%s] "
"failed: %s\n",
uncomped.c_str(), temp->filename(), reason.c_str()));
return false;
}
return true;
}
#else
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
#include <string>
#include <sys/stat.h>
using namespace std;
#include "debuglog.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);
}
TempDir tmp;
FileInterner interner(fn, &st, config, tmp, 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