656 lines
20 KiB
C++
656 lines
20 KiB
C++
/* Copyright (C) 2005 J.F.Dockes
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef TEST_MH_MBOX
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#include "autoconfig.h"
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#include <stdio.h>
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#include <errno.h>
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#include <sys/types.h>
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#include "safesysstat.h"
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#include <time.h>
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#include <regex.h>
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#include <cstring>
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#include <map>
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#include "cstr.h"
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#include "mimehandler.h"
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#include "debuglog.h"
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#include "readfile.h"
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#include "mh_mbox.h"
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#include "smallut.h"
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#include "rclconfig.h"
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#include "md5ut.h"
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#include "conftree.h"
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#include "ptmutex.h"
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using namespace std;
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// Define maximum message size for safety. 100MB would seem reasonable
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static const unsigned int max_mbox_member_size = 100 * 1024 * 1024;
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class FpKeeper {
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public:
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FpKeeper(FILE **fpp) : m_fpp(fpp) {}
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~FpKeeper()
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{
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if (m_fpp && *m_fpp) {
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fclose(*m_fpp);
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*m_fpp = 0;
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}
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}
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private: FILE **m_fpp;
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};
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static PTMutexInit o_mcache_mutex;
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/**
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* Handles a cache for message numbers to offset translations. Permits direct
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* accesses inside big folders instead of having to scan up to the right place
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*
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* Message offsets are saved to files stored under cfg(mboxcachedir), default
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* confdir/mboxcache. Mbox files smaller than cfg(mboxcacheminmbs) are not
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* cached.
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* Cache files are named as the md5 of the file UDI, which is kept in
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* the first block for possible collision detection. The 64 bits
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* offsets for all message "From_" lines follow. The format is purely
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* binary, values are not even byte-swapped to be proc-idependant.
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*/
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class MboxCache {
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public:
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typedef MimeHandlerMbox::mbhoff_type mbhoff_type;
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MboxCache()
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: m_ok(false), m_minfsize(0)
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{
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// Can't access rclconfig here, we're a static object, would
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// have to make sure it's initialized.
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}
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~MboxCache() {}
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mbhoff_type get_offset(RclConfig *config, const string& udi, int msgnum)
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{
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LOGDEB0(("MboxCache::get_offsets: udi [%s] msgnum %d\n", udi.c_str(),
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msgnum));
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if (!ok(config)) {
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LOGDEB0(("MboxCache::get_offsets: init failed\n"));
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return -1;
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}
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PTMutexLocker locker(o_mcache_mutex);
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string fn = makefilename(udi);
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FILE *fp = 0;
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if ((fp = fopen(fn.c_str(), "r")) == 0) {
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LOGDEB(("MboxCache::get_offsets: open failed, errno %d\n", errno));
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return -1;
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}
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FpKeeper keeper(&fp);
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char blk1[o_b1size];
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if (fread(blk1, 1, o_b1size, fp) != o_b1size) {
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LOGDEB0(("MboxCache::get_offsets: read blk1 errno %d\n", errno));
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return -1;
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}
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ConfSimple cf(string(blk1, o_b1size));
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string fudi;
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if (!cf.get("udi", fudi) || fudi.compare(udi)) {
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LOGINFO(("MboxCache::get_offset:badudi fn %s udi [%s], fudi [%s]\n",
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fn.c_str(), udi.c_str(), fudi.c_str()));
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return -1;
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}
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if (fseeko(fp, cacheoffset(msgnum), SEEK_SET) != 0) {
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LOGDEB0(("MboxCache::get_offsets: seek %lld errno %d\n",
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cacheoffset(msgnum), errno));
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return -1;
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}
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mbhoff_type offset = -1;
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int ret;
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if ((ret = fread(&offset, 1, sizeof(mbhoff_type), fp))
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!= sizeof(mbhoff_type)) {
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LOGDEB0(("MboxCache::get_offsets: read ret %d errno %d\n",
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ret, errno));
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return -1;
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}
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LOGDEB0(("MboxCache::get_offsets: ret %lld\n", (long long)offset));
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return offset;
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}
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// Save array of offsets for a given file, designated by Udi
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void put_offsets(RclConfig *config, const string& udi, mbhoff_type fsize,
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vector<mbhoff_type>& offs)
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{
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LOGDEB0(("MboxCache::put_offsets: %u offsets\n", offs.size()));
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if (!ok(config) || !maybemakedir())
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return;
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if (fsize < m_minfsize)
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return;
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PTMutexLocker locker(o_mcache_mutex);
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string fn = makefilename(udi);
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FILE *fp;
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if ((fp = fopen(fn.c_str(), "w")) == 0) {
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LOGDEB(("MboxCache::put_offsets: fopen errno %d\n", errno));
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return;
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}
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FpKeeper keeper(&fp);
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string blk1;
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blk1.append("udi=");
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blk1.append(udi);
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blk1.append(cstr_newline);
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blk1.resize(o_b1size, 0);
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if (fwrite(blk1.c_str(), 1, o_b1size, fp) != o_b1size) {
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LOGDEB(("MboxCache::put_offsets: fwrite errno %d\n", errno));
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return;
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}
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for (vector<mbhoff_type>::const_iterator it = offs.begin();
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it != offs.end(); it++) {
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mbhoff_type off = *it;
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if (fwrite((char*)&off, 1, sizeof(mbhoff_type), fp) !=
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sizeof(mbhoff_type)) {
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return;
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}
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}
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}
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// Check state, possibly initialize
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bool ok(RclConfig *config) {
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PTMutexLocker locker(o_mcache_mutex);
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if (m_minfsize == -1)
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return false;
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if (!m_ok) {
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int minmbs = 5;
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config->getConfParam("mboxcacheminmbs", &minmbs);
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if (minmbs < 0) {
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// minmbs set to negative to disable cache
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m_minfsize = -1;
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return false;
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}
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m_minfsize = minmbs * 1000 * 1000;
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config->getConfParam("mboxcachedir", m_dir);
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if (m_dir.empty())
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m_dir = "mboxcache";
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m_dir = path_tildexpand(m_dir);
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// If not an absolute path, compute relative to config dir
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if (m_dir.at(0) != '/')
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m_dir = path_cat(config->getConfDir(), m_dir);
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m_ok = true;
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}
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return m_ok;
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}
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private:
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bool m_ok;
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// Place where we store things
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string m_dir;
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// Don't cache smaller files. If -1, don't do anything.
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mbhoff_type m_minfsize;
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static const size_t o_b1size;
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// Create the cache directory if it does not exist
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bool maybemakedir()
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{
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struct stat st;
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if (stat(m_dir.c_str(), &st) != 0 && mkdir(m_dir.c_str(), 0700) != 0) {
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return false;
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}
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return true;
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}
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// Compute file name from udi
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string makefilename(const string& udi)
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{
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string digest, xdigest;
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MD5String(udi, digest);
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MD5HexPrint(digest, xdigest);
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return path_cat(m_dir, xdigest);
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}
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// Compute offset in cache file for the mbox offset of msgnum
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mbhoff_type cacheoffset(int msgnum)
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{// Msgnums are from 1
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return o_b1size + (msgnum-1) * sizeof(mbhoff_type);
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}
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};
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const size_t MboxCache::o_b1size = 1024;
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static class MboxCache o_mcache;
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static const string cstr_keyquirks("mhmboxquirks");
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MimeHandlerMbox::~MimeHandlerMbox()
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{
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clear();
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}
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void MimeHandlerMbox::clear()
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{
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m_fn.erase();
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if (m_vfp) {
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fclose((FILE *)m_vfp);
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m_vfp = 0;
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}
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m_msgnum = m_lineno = 0;
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m_ipath.erase();
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m_offsets.clear();
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RecollFilter::clear();
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}
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bool MimeHandlerMbox::set_document_file(const string& mt, const string &fn)
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{
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LOGDEB(("MimeHandlerMbox::set_document_file(%s)\n", fn.c_str()));
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RecollFilter::set_document_file(mt, fn);
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m_fn = fn;
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if (m_vfp) {
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fclose((FILE *)m_vfp);
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m_vfp = 0;
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}
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m_vfp = fopen(fn.c_str(), "r");
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if (m_vfp == 0) {
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LOGERR(("MimeHandlerMail::set_document_file: error opening %s\n",
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fn.c_str()));
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return false;
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}
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#if defined O_NOATIME && O_NOATIME != 0
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if (fcntl(fileno((FILE *)m_vfp), F_SETFL, O_NOATIME) < 0) {
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// perror("fcntl");
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}
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#endif
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// Used to use ftell() here: no good beyond 2GB
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{struct stat st;
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if (fstat(fileno((FILE*)m_vfp), &st) < 0) {
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LOGERR(("MimeHandlerMbox:setdocfile: fstat(%s) failed errno %d\n",
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fn.c_str(), errno));
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return false;
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}
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m_fsize = st.st_size;
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}
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m_havedoc = true;
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m_offsets.clear();
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m_quirks = 0;
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// Check for location-based quirks:
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string quirks;
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if (m_config && m_config->getConfParam(cstr_keyquirks, quirks)) {
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if (quirks == "tbird") {
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LOGDEB(("MimeHandlerMbox: setting quirks TBIRD\n"));
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m_quirks |= MBOXQUIRK_TBIRD;
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}
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}
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// And double check for thunderbird
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string tbirdmsf = fn + ".msf";
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if ((m_quirks&MBOXQUIRK_TBIRD) == 0 && access(tbirdmsf.c_str(), 0) == 0) {
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LOGDEB(("MimeHandlerMbox: detected unconfigured tbird mbox in %s\n",
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fn.c_str()));
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m_quirks |= MBOXQUIRK_TBIRD;
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}
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return true;
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}
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#define LL 1024
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typedef char line_type[LL+10];
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static inline void stripendnl(line_type& line, int& ll)
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{
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ll = strlen(line);
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while (ll > 0) {
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if (line[ll-1] == '\n' || line[ll-1] == '\r') {
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line[ll-1] = 0;
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ll--;
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} else
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break;
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}
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}
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// The mbox format uses lines beginning with 'From ' as separator.
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// Mailers are supposed to quote any other lines beginning with
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// 'From ', turning it into '>From '. This should make it easy to detect
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// message boundaries by matching a '^From ' regular expression
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// Unfortunately this quoting is quite often incorrect in the real world.
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//
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// The rest of the format for the line is somewhat variable, but there will
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// be a 4 digit year somewhere...
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// The canonic format is the following, with a 24 characters date:
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// From toto@tutu.com Sat Sep 30 16:44:06 2000
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// This resulted into the pattern for versions up to 1.9.0:
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// "^From .* [1-2][0-9][0-9][0-9]$"
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//
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// Some mailers add a time zone to the date, this is non-"standard",
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// but happens, like in:
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// From toto@truc.com Sat Sep 30 16:44:06 2000 -0400
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//
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// This is taken into account in the new regexp, which also matches more
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// of the date format, to catch a few actual issues like
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// From http://www.itu.int/newsroom/press/releases/1998/NP-2.html:
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// Note that this *should* have been quoted.
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//
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// http://www.qmail.org/man/man5/mbox.html seems to indicate that the
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// fact that From_ is normally preceded by a blank line should not be
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// used, but we do it anyway (for now).
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// The same source indicates that arbitrary data can follow the date field
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//
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// A variety of pathologic From_ lines:
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// Bad date format:
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// From uucp Wed May 22 11:28 GMT 1996
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// Added timezone at the end (ok, part of the "any data" after the date)
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// From qian2@fas.harvard.edu Sat Sep 30 16:44:06 2000 -0400
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// Emacs VM botch ? Adds tz between hour and year
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// From dockes Wed Feb 23 10:31:20 +0100 2005
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// From dockes Fri Dec 1 20:36:39 +0100 2006
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// The modified regexp gives the exact same results on the ietf mail archive
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// and my own's.
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// Update, 2008-08-29: some old? Thunderbird versions apparently use a date
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// in "Date: " header format, like: From - Mon, 8 May 2006 10:57:32
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// This was added as an alternative format. By the way it also fools "mail" and
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// emacs-vm, Recoll is not alone
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// Update: 2009-11-27: word after From may be quoted string: From "john bull"
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static const char *frompat =
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"^From[ ]+([^ ]+|\"[^\"]+\")[ ]+" // 'From (toto@tutu|"john bull") '
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"[[:alpha:]]{3}[ ]+[[:alpha:]]{3}[ ]+[0-3 ][0-9][ ]+" // Fri Oct 26
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"[0-2][0-9]:[0-5][0-9](:[0-5][0-9])?[ ]+" // Time, seconds optional
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"([^ ]+[ ]+)?" // Optional tz
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"[12][0-9][0-9][0-9]" // Year, unanchored, more data may follow
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"|" // Or standard mail Date: header format
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"^From[ ]+[^ ]+[ ]+" // From toto@tutu
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"[[:alpha:]]{3},[ ]+[0-3]?[0-9][ ]+[[:alpha:]]{3}[ ]+" // Mon, 8 May
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"[12][0-9][0-9][0-9][ ]+" // Year
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"[0-2][0-9]:[0-5][0-9](:[0-5][0-9])?" // Time, secs optional
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;
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// Extreme thunderbird brokiness. Will sometimes use From lines
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// exactly like: From ^M (From followed by space and eol). We only
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// test for this if QUIRKS_TBIRD is set
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static const char *miniTbirdFrom = "^From $";
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static regex_t fromregex;
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static regex_t minifromregex;
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static bool regcompiled;
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static PTMutexInit o_regex_mutex;
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static void compileregexes()
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{
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PTMutexLocker locker(o_regex_mutex);
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// As the initial test of regcompiled is unprotected the value may
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// have changed while we were waiting for the lock. Test again now
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// that we are alone.
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if (regcompiled)
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return;
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regcomp(&fromregex, frompat, REG_NOSUB|REG_EXTENDED);
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regcomp(&minifromregex, miniTbirdFrom, REG_NOSUB|REG_EXTENDED);
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regcompiled = true;
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}
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bool MimeHandlerMbox::next_document()
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{
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if (m_vfp == 0) {
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LOGERR(("MimeHandlerMbox::next_document: not open\n"));
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return false;
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}
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if (!m_havedoc) {
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return false;
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}
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FILE *fp = (FILE *)m_vfp;
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int mtarg = 0;
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if (!m_ipath.empty()) {
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sscanf(m_ipath.c_str(), "%d", &mtarg);
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} else if (m_forPreview) {
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// Can't preview an mbox.
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LOGDEB(("MimeHandlerMbox::next_document: can't preview folders!\n"));
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return false;
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}
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LOGDEB0(("MimeHandlerMbox::next_document: fn %s, msgnum %d mtarg %d \n",
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m_fn.c_str(), m_msgnum, mtarg));
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if (mtarg == 0)
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mtarg = -1;
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if (!regcompiled) {
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compileregexes();
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}
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// If we are called to retrieve a specific message, seek to bof
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// (then scan up to the message). This is for the case where the
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// same object is reused to fetch several messages (else the fp is
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// just opened no need for a seek). We could also check if the
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// current message number is lower than the requested one and
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// avoid rereading the whole thing in this case. But I'm not sure
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// we're ever used in this way (multiple retrieves on same
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// object). So:
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bool storeoffsets = true;
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if (mtarg > 0) {
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mbhoff_type off;
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line_type line;
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LOGDEB0(("MimeHandlerMbox::next_doc: mtarg %d m_udi[%s]\n",
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mtarg, m_udi.c_str()));
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if (!m_udi.empty() &&
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(off = o_mcache.get_offset(m_config, m_udi, mtarg)) >= 0 &&
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fseeko(fp, (off_t)off, SEEK_SET) >= 0 &&
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fgets(line, LL, fp) &&
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(!regexec(&fromregex, line, 0, 0, 0) ||
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((m_quirks & MBOXQUIRK_TBIRD) &&
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!regexec(&minifromregex, line, 0, 0, 0))) ) {
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LOGDEB0(("MimeHandlerMbox: Cache: From_ Ok\n"));
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fseeko(fp, (off_t)off, SEEK_SET);
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m_msgnum = mtarg -1;
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storeoffsets = false;
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} else {
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fseek(fp, 0, SEEK_SET);
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m_msgnum = 0;
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}
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}
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off_t message_end = 0;
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bool iseof = false;
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bool hademptyline = true;
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string& msgtxt = m_metaData[cstr_dj_keycontent];
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msgtxt.erase();
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line_type line;
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for (;;) {
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message_end = ftello(fp);
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if (!fgets(line, LL, fp)) {
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LOGDEB2(("MimeHandlerMbox:next: eof\n"));
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iseof = true;
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m_msgnum++;
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break;
|
|
}
|
|
m_lineno++;
|
|
int ll;
|
|
stripendnl(line, ll);
|
|
LOGDEB2(("mhmbox:next: hadempty %d lineno %d ll %d Line: [%s]\n",
|
|
hademptyline, m_lineno, ll, line));
|
|
if (hademptyline) {
|
|
if (ll > 0) {
|
|
// Non-empty line with empty line flag set, reset flag
|
|
// and check regex.
|
|
if (!(m_quirks & MBOXQUIRK_TBIRD)) {
|
|
// Tbird sometimes omits the empty line, so avoid
|
|
// resetting state (initially true) and hope for
|
|
// the best
|
|
hademptyline = false;
|
|
}
|
|
/* The 'F' compare is redundant but it improves performance
|
|
A LOT */
|
|
if (line[0] == 'F' && (
|
|
!regexec(&fromregex, line, 0, 0, 0) ||
|
|
((m_quirks & MBOXQUIRK_TBIRD) &&
|
|
!regexec(&minifromregex, line, 0, 0, 0)))
|
|
) {
|
|
LOGDEB1(("MimeHandlerMbox: msgnum %d, "
|
|
"From_ at line %d: [%s]\n", m_msgnum, m_lineno, line));
|
|
if (storeoffsets)
|
|
m_offsets.push_back(message_end);
|
|
m_msgnum++;
|
|
if ((mtarg <= 0 && m_msgnum > 1) ||
|
|
(mtarg > 0 && m_msgnum > mtarg)) {
|
|
// Got message, go do something with it
|
|
break;
|
|
}
|
|
// From_ lines are not part of messages
|
|
continue;
|
|
}
|
|
}
|
|
} else if (ll <= 0) {
|
|
hademptyline = true;
|
|
}
|
|
|
|
if (mtarg <= 0 || m_msgnum == mtarg) {
|
|
// Accumulate message lines
|
|
line[ll] = '\n';
|
|
line[ll+1] = 0;
|
|
msgtxt += line;
|
|
if (msgtxt.size() > max_mbox_member_size) {
|
|
LOGERR(("mh_mbox: huge message (more than %u MB) inside %s,"
|
|
" giving up\n", max_mbox_member_size/(1024*1024),
|
|
m_fn.c_str()));
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
LOGDEB2(("Message text length %d\n", msgtxt.size()));
|
|
LOGDEB2(("Message text: [%s]\n", msgtxt.c_str()));
|
|
char buf[20];
|
|
// m_msgnum was incremented when hitting the next From_ or eof, so the data
|
|
// is for m_msgnum - 1
|
|
sprintf(buf, "%d", m_msgnum - 1);
|
|
m_metaData[cstr_dj_keyipath] = buf;
|
|
m_metaData[cstr_dj_keymt] = "message/rfc822";
|
|
if (iseof) {
|
|
LOGDEB2(("MimeHandlerMbox::next: eof hit\n"));
|
|
m_havedoc = false;
|
|
if (!m_udi.empty() && storeoffsets) {
|
|
o_mcache.put_offsets(m_config, m_udi, m_fsize, m_offsets);
|
|
}
|
|
}
|
|
return msgtxt.empty() ? false : true;
|
|
}
|
|
|
|
#else // Test driver ->
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
|
|
#include <iostream>
|
|
#include <string>
|
|
using namespace std;
|
|
|
|
#include "rclconfig.h"
|
|
#include "rclinit.h"
|
|
#include "cstr.h"
|
|
#include "mh_mbox.h"
|
|
|
|
static char *thisprog;
|
|
|
|
static char usage [] =
|
|
"Test driver for mbox walking function\n"
|
|
"mh_mbox [-m num] mboxfile\n"
|
|
" \n\n"
|
|
;
|
|
static void
|
|
Usage(void)
|
|
{
|
|
fprintf(stderr, "%s: usage:\n%s", thisprog, usage);
|
|
exit(1);
|
|
}
|
|
static RclConfig *config;
|
|
static int op_flags;
|
|
#define OPT_MOINS 0x1
|
|
#define OPT_m 0x2
|
|
//#define OPT_t 0x4
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
string msgnum;
|
|
thisprog = argv[0];
|
|
argc--; argv++;
|
|
|
|
while (argc > 0 && **argv == '-') {
|
|
(*argv)++;
|
|
if (!(**argv))
|
|
/* Cas du "adb - core" */
|
|
Usage();
|
|
while (**argv)
|
|
switch (*(*argv)++) {
|
|
case 'm': op_flags |= OPT_m; if (argc < 2) Usage();
|
|
msgnum = *(++argv);
|
|
argc--;
|
|
goto b1;
|
|
// case 't': op_flags |= OPT_t;break;
|
|
default: Usage(); break;
|
|
}
|
|
b1: argc--; argv++;
|
|
}
|
|
|
|
if (argc != 1)
|
|
Usage();
|
|
string filename = *argv++;argc--;
|
|
string reason;
|
|
config = recollinit(RclInitFlags(0), 0, 0, reason, 0);
|
|
if (config == 0) {
|
|
cerr << "init failed " << reason << endl;
|
|
exit(1);
|
|
}
|
|
config->setKeyDir(path_getfather(filename));
|
|
MimeHandlerMbox mh(config, "some_id");
|
|
if (!mh.set_document_file("text/x-mail", filename)) {
|
|
cerr << "set_document_file failed" << endl;
|
|
exit(1);
|
|
}
|
|
if (!msgnum.empty()) {
|
|
mh.skip_to_document(msgnum);
|
|
if (!mh.next_document()) {
|
|
cerr << "next_document failed after skipping to " << msgnum << endl;
|
|
exit(1);
|
|
}
|
|
map<string, string>::const_iterator it =
|
|
mh.get_meta_data().find(cstr_dj_keycontent);
|
|
int size;
|
|
if (it == mh.get_meta_data().end()) {
|
|
size = -1;
|
|
cerr << "No content!!" << endl;
|
|
exit(1);
|
|
}
|
|
cout << "Doc " << msgnum << ":" << endl;
|
|
cout << it->second << endl;
|
|
exit(0);
|
|
}
|
|
|
|
int docnt = 0;
|
|
while (mh.has_documents()) {
|
|
if (!mh.next_document()) {
|
|
cerr << "next_document failed" << endl;
|
|
exit(1);
|
|
}
|
|
docnt++;
|
|
map<string, string>::const_iterator it =
|
|
mh.get_meta_data().find(cstr_dj_keycontent);
|
|
int size;
|
|
if (it == mh.get_meta_data().end()) {
|
|
size = -1;
|
|
} else {
|
|
size = it->second.length();
|
|
}
|
|
cout << "Doc " << docnt << " size " << size << endl;
|
|
}
|
|
cout << docnt << " documents found in " << filename << endl;
|
|
exit(0);
|
|
}
|
|
|
|
|
|
#endif // TEST_MH_MBOX
|