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httrack/src/htsback.c
Xavier Roche 117c43f3e6 Fixed malformed printf.
2013-04-29 16:21:49 +00:00

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/* ------------------------------------------------------------ */
/*
HTTrack Website Copier, Offline Browser for Windows and Unix
Copyright (C) Xavier Roche and other contributors
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 3
of the License, or 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.
Important notes:
- We hereby ask people using this source NOT to use it in purpose of grabbing
emails addresses, or collecting any other private information on persons.
This would disgrace our work, and spoil the many hours we spent on it.
Please visit our Website: http://www.httrack.com
*/
/* ------------------------------------------------------------ */
/* File: httrack.c subroutines: */
/* backing system (multiple socket download) */
/* Author: Xavier Roche */
/* ------------------------------------------------------------ */
/* Internal engine bytecode */
#define HTS_INTERNAL_BYTECODE
/* specific definitions */
#include "htsnet.h"
#include "htscore.h"
#include "htsthread.h"
#include <time.h>
/* END specific definitions */
#include "htsback.h"
//#ifdef _WIN32
#include "htsftp.h"
#if HTS_USEZLIB
#include "htszlib.h"
#else
#error HTS_USEZLIB not defined
#endif
//#endif
#ifdef _WIN32
#ifndef __cplusplus
// DOS
#ifndef _WIN32_WCE
#include <process.h> /* _beginthread, _endthread */
#endif
#endif
#else
#endif
#if HTS_USEMMS
#include "htsmms.h"
#endif
#undef test_flush
#define test_flush if (opt->flush) { if (opt->log) { fflush(opt->log); } if (opt->log) { fflush(opt->log); } }
#define VT_CLREOL "\33[K"
/* Slot operations */
static int slot_can_be_cached_on_disk(const lien_back* back);
static int slot_can_be_cleaned(const lien_back* back);
static int slot_can_be_finalized(httrackp* opt, const lien_back* back);
struct_back* back_new(int back_max) {
int i;
struct_back* sback = calloct(1, sizeof(struct_back));
sback->count = back_max;
sback->lnk = (lien_back*) calloct((back_max + 1), sizeof(lien_back));
sback->ready = inthash_new(32767);
sback->ready_size_bytes = 0;
inthash_value_is_malloc(sback->ready, 1);
// init
for(i = 0 ; i < sback->count ; i++){
sback->lnk[i].r.location = sback->lnk[i].location_buffer;
sback->lnk[i].status = STATUS_FREE;
sback->lnk[i].r.soc = INVALID_SOCKET;
}
return sback;
}
void back_free(struct_back** sback) {
if (sback != NULL && *sback != NULL) {
if ((*sback)->lnk != NULL) {
freet((*sback)->lnk);
(*sback)->lnk = NULL;
}
if ((*sback)->ready != NULL) {
inthash_delete(&(*sback)->ready);
(*sback)->ready_size_bytes = 0;
}
freet(*sback);
*sback = NULL;
}
}
void back_delete_all(httrackp* opt, cache_back* cache, struct_back* sback) {
if (sback != NULL) {
int i;
// delete live slots
for(i = 0 ; i < sback->count ; i++) {
back_delete(opt, cache, sback, i);
}
// delete stored slots
if (sback->ready != NULL) {
struct_inthash_enum e = inthash_enum_new(sback->ready);
inthash_chain* item;
while((item = inthash_enum_next(&e))) {
#ifndef HTS_NO_BACK_ON_DISK
char *filename = (char*) item->value.ptr;
if (filename != NULL) {
(void) UNLINK(filename);
}
#else
/* clear entry content (but not yet the entry) */
lien_back *back = (lien_back*) item->value.ptr;
back_clear_entry(back);
#endif
}
/* delete hashtable & content */
inthash_delete(&sback->ready);
sback->ready_size_bytes = 0;
}
}
}
// ---
// routines de backing
static int back_index_ready(httrackp* opt, struct_back* sback, char* adr, char* fil, char* sav, int getIndex);
static int back_index_fetch(httrackp* opt, struct_back* sback, char* adr, char* fil, char* sav, int getIndex);
// retourne l'index d'un lien dans un tableau de backing
int back_index(httrackp* opt, struct_back* sback,char* adr,char* fil,char* sav) {
return back_index_fetch(opt,sback, adr, fil, sav, 1);
}
static int back_index_fetch(httrackp* opt, struct_back* sback, char* adr, char* fil, char* sav, int getIndex) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int index=-1;
int i;
for( i = 0 ; i < back_max ; i++ ) {
if (back[i].status >= 0 /* not free or alive */
&& strfield2(back[i].url_adr,adr)
&& strcmp(back[i].url_fil,fil)==0)
{
if (index==-1) /* first time we meet, store it */
index=i;
else if (sav != NULL && strcmp(back[i].url_sav, sav) == 0) { /* oops, check sav too */
index=i;
return index;
}
}
}
// not found in fast repository - search in the storage hashtable
if (index == -1 && sav != NULL) {
index = back_index_ready(opt, sback, adr, fil, sav, getIndex);
}
return index;
}
/* resurrect stored entry */
static int back_index_ready(httrackp* opt, struct_back* sback, char* adr, char* fil, char* sav, int getIndex) {
lien_back* const back = sback->lnk;
void* ptr = NULL;
if (inthash_read_pvoid(sback->ready, sav, &ptr)) {
if (!getIndex) { /* don't "pagefault" the entry */
if (ptr != NULL) {
return sback->count; /* (invalid but) positive result */
} else {
return -1; /* not found */
}
} else if (ptr != NULL) {
lien_back* itemback = NULL;
#ifndef HTS_NO_BACK_ON_DISK
FILE *fp;
char* fileback = (char*) ptr;
char catbuff[CATBUFF_SIZE];
if (( fp = FOPEN(fconv(catbuff, fileback), "rb") ) != NULL ) {
if (back_unserialize(fp, &itemback) != 0) {
if (itemback != NULL) {
back_clear_entry(itemback);
freet(itemback);
itemback = NULL;
}
if (opt->log != NULL) {
int last_errno = errno;
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: warning: unserialize error for %s%s (%s): %s"LF,adr,fil,sav,strerror(last_errno));
test_flush;
}
}
fclose(fp);
} else {
if (opt->log != NULL) {
int last_errno = errno;
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: warning: unserialize error for %s%s (%s), file disappeared: %s"LF,adr,fil,sav,strerror(last_errno));
test_flush;
}
}
(void) UNLINK(fileback);
#else
itemback = (lien_back*) ptr;
#endif
if (itemback != NULL) {
// move from hashtable to fast repository
int q = back_search(opt, sback);
if (q != -1) {
deletehttp(&back[q].r); // security check
back_move(itemback, &back[q]);
back_clear_entry(itemback); /* delete entry content */
freet(itemback); /* delete item */
itemback = NULL;
inthash_remove(sback->ready, sav); // delete item
sback->ready_size_bytes -= back[q].r.size; /* substract for stats */
back_set_locked(sback, q); /* locked */
return q;
} else {
if (opt->log != NULL) {
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: warning: unserialize error for %s%s (%s): no more space to wakeup frozen slots"LF,adr,fil,sav);
test_flush;
}
}
}
}
}
return -1;
}
static int slot_can_be_cached_on_disk(const lien_back* back) {
return
(back->status == STATUS_READY && back->locked == 0
&& back->url_sav[0] != '\0'
&& strcmp(back->url_sav, BACK_ADD_TEST) != 0
);
/* Note: not checking !IS_DELAYED_EXT(back->url_sav) or it will quickly cause the slots to be filled! */
}
/* Put all backing entries that are ready in the storage hashtable to spare space and CPU */
int back_cleanup_background(httrackp* opt,cache_back* cache,struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int nclean = 0;
int i;
for( i = 0 ; i < back_max ; i++ ) {
// ready, not locked and suitable
if (slot_can_be_cached_on_disk(&back[i])) {
#ifdef HTS_NO_BACK_ON_DISK
lien_back* itemback;
#endif
/* Security check */
int checkIndex = back_index_ready(opt, sback, back[i].url_adr, back[i].url_fil, back[i].url_sav, 1);
if (checkIndex != -1) {
if (opt->log) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"engine: unexpected duplicate file entry: %s%s -> %s (%d '%s') / %s%s -> %s (%d '%s')"LF,
back[checkIndex].url_adr, back[checkIndex].url_fil, back[checkIndex].url_sav, back[checkIndex].r.statuscode, back[checkIndex].r.msg,
back[i].url_adr, back[i].url_fil, back[i].url_sav, back[i].r.statuscode, back[i].r.msg
);
test_flush;
}
back_delete(NULL, NULL, sback, checkIndex);
#ifdef _DEBUG
/* This should NOT happend! */
{ int duplicateEntryInBacklog = 1; assertf(!duplicateEntryInBacklog); }
#endif
}
#ifndef HTS_NO_BACK_ON_DISK
/* temporarily serialize the entry on disk */
{
int fsz = (int) strlen(back[i].url_sav);
char *filename = malloc(fsz + 8 + 1);
if (filename != NULL) {
FILE *fp;
if (opt->getmode != 0) {
sprintf(filename, "%s.tmp", back[i].url_sav);
} else {
sprintf(filename, "%stmpfile%d.tmp", StringBuff(opt->path_html_utf8), opt->state.tmpnameid++);
}
/* Security check */
if (fexist_utf8(filename)) {
if (opt->log != NULL) {
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: warning: temporary file %s already exists"LF, filename);
test_flush;
}
}
/* Create file and serialize slot */
if ((fp = filecreate(NULL, filename)) != NULL)
{
if (back_serialize(fp, &back[i]) == 0)
{
inthash_add_pvoid(sback->ready, back[i].url_sav, filename);
filename = NULL;
sback->ready_size_bytes += back[i].r.size; /* add for stats */
nclean++;
back_clear_entry(&back[i]); /* entry is now recycled */
} else {
if (opt->log != NULL) {
int last_errno = errno;
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: warning: serialize error for %s%s to %s: write error: %s"LF,back[i].url_adr,back[i].url_fil,filename,strerror(last_errno));
test_flush;
}
}
fclose(fp);
} else {
if (opt->log != NULL) {
int last_errno = errno;
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: warning: serialize error for %s%s to %s: open error: %s (%s, %s)"LF, back[i].url_adr, back[i].url_fil, filename, strerror(last_errno), dir_exists(filename) ? "directory exists" : "directory does NOT exist!", fexist_utf8(filename) ? "file already exists!" : "file does not exist");
test_flush;
}
}
if (filename != NULL)
free(filename);
} else {
if (opt->log != NULL) {
int last_errno = errno;
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: warning: serialize error for %s%s to %s: memory full: %s"LF,back[i].url_adr,back[i].url_fil,filename,strerror(last_errno));
test_flush;
}
}
}
#else
itemback = calloct(1, sizeof(lien_back));
back_move(&back[i], itemback);
inthash_add_pvoid(sback->ready, itemback->url_sav, itemback);
nclean++;
#endif
}
}
return nclean;
}
// nombre d'entrées libres dans le backing
int back_available(struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int i;
int nb=0;
for(i=0;i<back_max;i++)
if (back[i].status==STATUS_FREE) /* libre */
nb++;
return nb;
}
// retourne estimation de la taille des html et fichiers stockés en mémoire
LLint back_incache(struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int i;
LLint sum=0;
for(i=0;i<back_max;i++)
if (back[i].status!=-1)
if (back[i].r.adr) // ne comptabilier que les blocs en mémoire
sum+=max(back[i].r.size,back[i].r.totalsize);
// stored (ready) slots
#ifdef HTS_NO_BACK_ON_DISK
if (sback->ready != NULL) {
struct_inthash_enum e = inthash_enum_new(sback->ready);
inthash_chain* item;
while((item = inthash_enum_next(&e))) {
lien_back* ritem = (lien_back*) item->value.ptr;
if (ritem->status!=-1)
if (ritem->r.adr) // ne comptabilier que les blocs en mémoire
sum+=max(ritem->r.size,ritem->r.totalsize);
}
}
#endif
return sum;
}
// retourne estimation de la taille des html et fichiers stockés en mémoire
int back_done_incache(struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int i;
int n = 0;
for(i = 0 ; i < back_max ; i++)
if (back[i].status == STATUS_READY)
n++;
// stored (ready) slots
if (sback->ready != NULL) {
#ifndef HTS_NO_BACK_ON_DISK
n += inthash_nitems(sback->ready);
#else
struct_inthash_enum e = inthash_enum_new(sback->ready);
inthash_chain* item;
while((item = inthash_enum_next(&e))) {
lien_back* ritem = (lien_back*) item->value.ptr;
if (ritem->status==STATUS_READY)
n++;
}
#endif
}
return n;
}
// le lien a-t-il été mis en backing?
HTS_INLINE int back_exist(struct_back* sback,httrackp* opt,char* adr,char* fil,char* sav) {
return (back_index_fetch(opt, sback, adr, fil, sav, /*don't fetch*/0) >= 0);
}
// nombre de sockets en tâche de fond
int back_nsoc(struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int n=0;
int i;
for(i=0;i<back_max;i++)
if (back[i].status > 0) // only receive
n++;
return n;
}
int back_nsoc_overall(struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int n=0;
int i;
for(i=0;i<back_max;i++)
if (back[i].status > 0 || back[i].status == STATUS_ALIVE)
n++;
return n;
}
// objet (lien) téléchargé ou transféré depuis le cache
//
// fermer les paramètres de transfert,
// et notamment vérifier les fichiers compressés (décompresser), callback etc.
int back_finalize(httrackp* opt,cache_back* cache,struct_back* sback,int p) {
char catbuff[CATBUFF_SIZE];
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(p >= 0 && p < back_max);
/* Store ? */
if (!back[p].finalized) {
back[p].finalized = 1;
/* Don't store broken files. Note: check is done before compression.
If the file is partial, the next run will attempt to continue it with compression too.
*/
if (back[p].r.totalsize > 0 && back[p].r.statuscode > 0
&& back[p].r.size != back[p].r.totalsize && ! opt->tolerant) {
if (back[p].status == STATUS_READY) {
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_WARNING);
fprintf(opt->log, "file not stored in cache due to bogus state (broken size, expected "LLintP" got "LLintP"): %s%s"LF,
back[p].r.totalsize, back[p].r.size, back[p].url_adr,back[p].url_fil);
}
} else {
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_INFO);
fprintf(opt->log, "incomplete file not yet stored in cache (expected "LLintP" got "LLintP"): %s%s"LF,
back[p].r.totalsize, back[p].r.size, back[p].url_adr,back[p].url_fil);
}
}
test_flush;
return -1;
}
if (
(back[p].status == STATUS_READY) // ready
&&
(back[p].r.statuscode > 0) // not internal error
)
{
if (!back[p].testmode) { // not test mode
char* state="unknown";
/* décompression */
#if HTS_USEZLIB
if (gz_is_available && back[p].r.compressed) {
if (back[p].r.size > 0) {
//if ( (back[p].r.adr) && (back[p].r.size>0) ) {
// stats
back[p].compressed_size=back[p].r.size;
// en mémoire -> passage sur disque
if (!back[p].r.is_write) {
#if 1
#ifdef _WIN32
#undef tempnam
#define tempnam _tempnam
#endif
char *const tmp = tempnam(NULL, "httrack_temporaryGzipFile_");
if (tmp != NULL) {
strcpybuff(back[p].tmpfile_buffer, tmp);
free(tmp);
back[p].tmpfile = back[p].tmpfile_buffer;
} else {
back[p].tmpfile = NULL;
}
#else
back[p].tmpfile_buffer[0]='\0';
back[p].tmpfile=tmpnam(back[p].tmpfile_buffer);
#endif
if (back[p].tmpfile != NULL && back[p].tmpfile[0] != '\0') {
/* note: tmpfile is a local system filename */
back[p].r.out=fopen(back[p].tmpfile, "wb");
if (back[p].r.out) {
if ((back[p].r.adr) && (back[p].r.size>0)) {
if (fwrite(back[p].r.adr,1,(size_t)back[p].r.size,back[p].r.out) != back[p].r.size) {
back[p].r.statuscode=STATUSCODE_INVALID;
strcpybuff(back[p].r.msg,"Write error when decompressing");
}
} else {
back[p].tmpfile[0]='\0';
back[p].r.statuscode=STATUSCODE_INVALID;
strcpybuff(back[p].r.msg,"Empty compressed file");
}
} else {
back[p].tmpfile[0]='\0';
back[p].r.statuscode=STATUSCODE_INVALID;
strcpybuff(back[p].r.msg,"Open error when decompressing (can not create a temporary file)");
}
}
}
// fermer fichier sortie
if (back[p].r.out!=NULL) {
fclose(back[p].r.out);
back[p].r.out=NULL;
}
// décompression
if (back[p].tmpfile != NULL && back[p].tmpfile[0] != '\0') {
if (back[p].url_sav[0]) {
LLint size;
file_notify(opt,back[p].url_adr, back[p].url_fil, back[p].url_sav, 1, 1, back[p].r.notmodified);
filecreateempty(&opt->state.strc, back[p].url_sav); // filenote & co
if ((size = hts_zunpack(back[p].tmpfile, back[p].url_sav))>=0) {
back[p].r.size=back[p].r.totalsize=size;
// fichier -> mémoire
if (!back[p].r.is_write) {
deleteaddr(&back[p].r);
back[p].r.adr = readfile_utf8(back[p].url_sav);
if (!back[p].r.adr) {
back[p].r.statuscode=STATUSCODE_INVALID;
strcpybuff(back[p].r.msg,"Read error when decompressing");
}
UNLINK(back[p].url_sav);
}
} else {
back[p].r.statuscode = STATUSCODE_INVALID;
strcpybuff(back[p].r.msg, "Error when decompressing");
}
}
/* ensure that no remaining temporary file exists */
unlink(back[p].tmpfile);
back[p].tmpfile = NULL;
}
// stats
HTS_STAT.total_packed+=back[p].compressed_size;
HTS_STAT.total_unpacked+=back[p].r.size;
HTS_STAT.total_packedfiles++;
// unflag
}
}
#endif
/* Write mode to disk */
if (back[p].r.is_write && back[p].r.adr != NULL) {
freet(back[p].r.adr);
back[p].r.adr = NULL;
}
/* remove reference file, if any */
if (back[p].r.is_write) {
url_savename_refname_remove(opt, back[p].url_adr, back[p].url_fil);
}
/* ************************************************************************
REAL MEDIA HACK
Check if we have to load locally the file
************************************************************************ */
if (back[p].r.statuscode == HTTP_OK) { // OK (ou 304 en backing)
if (back[p].r.is_write) { // Written file
if (may_be_hypertext_mime(opt,back[p].r.contenttype, back[p].url_fil)) { // to parse!
off_t sz;
sz=fsize_utf8(back[p].url_sav);
if (sz>0) { // ok, exists!
if (sz < 8192) { // ok, small file --> to parse!
FILE* fp=FOPEN(back[p].url_sav,"rb");
if (fp) {
back[p].r.adr=malloct((int)sz + 2);
if (back[p].r.adr) {
if (fread(back[p].r.adr,1,sz,fp) == sz) {
back[p].r.size=sz;
back[p].r.adr[sz] = '\0';
back[p].r.is_write = 0; /* not anymore a direct-to-disk file */
} else {
freet(back[p].r.adr);
back[p].r.size=0;
back[p].r.adr = NULL;
back[p].r.statuscode=STATUSCODE_INVALID;
strcpybuff(back[p].r.msg, ".RAM read error");
}
fclose(fp);
fp=NULL;
// remove (temporary) file!
UNLINK(fconv(catbuff,back[p].url_sav));
}
if (fp)
fclose(fp);
}
}
}
}
}
}
/* EN OF REAL MEDIA HACK */
/* Stats */
if (cache->txt) {
char flags[32];
char s[256];
time_t tt;
struct tm* A;
tt=time(NULL);
A=localtime(&tt);
if (A == NULL) {
int localtime_returned_null=0;
assert(localtime_returned_null);
}
strftime(s,250,"%H:%M:%S",A);
flags[0]='\0';
/* input flags */
if (back[p].is_update)
strcatbuff(flags, "U"); // update request
else
strcatbuff(flags, "-");
if (back[p].range_req_size)
strcatbuff(flags, "R"); // range request
else
strcatbuff(flags, "-");
/* state flags */
if (back[p].r.is_file) // direct to disk
strcatbuff(flags, "F");
else
strcatbuff(flags, "-");
/* output flags */
if (!back[p].r.notmodified)
strcatbuff(flags, "M"); // modified
else
strcatbuff(flags, "-");
if (back[p].r.is_chunk) // chunked
strcatbuff(flags, "C");
else
strcatbuff(flags, "-");
if (back[p].r.compressed)
strcatbuff(flags, "Z"); // gzip
else
strcatbuff(flags, "-");
/* Err I had to split these.. */
fprintf(cache->txt,"%s\t", s);
fprintf(cache->txt,LLintP"/", (LLint)back[p].r.size);
fprintf(cache->txt,LLintP,(LLint)back[p].r.totalsize);
fprintf(cache->txt,"\t%s\t",flags);
}
#if HTS_USEZLIB
back[p].r.compressed=0;
#endif
if (back[p].r.statuscode == HTTP_OK) {
if (back[p].r.size>=0) {
if (strcmp(back[p].url_fil,"/robots.txt") !=0 ) {
HTS_STAT.stat_bytes+=back[p].r.size;
HTS_STAT.stat_files++;
}
if ( (!back[p].r.notmodified) && (opt->is_update) ) {
HTS_STAT.stat_updated_files++; // page modifiée
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_INFO);
if (back[p].is_update) {
fprintf(opt->log,"engine: transfer-status: link updated: %s%s -> %s"LF,back[p].url_adr,back[p].url_fil,back[p].url_sav);
} else {
fprintf(opt->log,"engine: transfer-status: link added: %s%s -> %s"LF,back[p].url_adr,back[p].url_fil,back[p].url_sav);
}
test_flush;
}
if (cache->txt) {
if (back[p].is_update) {
state="updated";
} else {
state="added";
}
}
} else {
if ( (opt->debug>0) && (opt->log!=NULL) ) {
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: transfer-status: link recorded: %s%s -> %s"LF,back[p].url_adr,back[p].url_fil,back[p].url_sav);
test_flush;
}
if (cache->txt) {
if (opt->is_update)
state="untouched";
else
state="added";
}
}
} else {
if ( (opt->debug>0) && (opt->log!=NULL) ) {
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: transfer-status: empty file? (%d, '%s'): %s%s"LF,back[p].r.statuscode,back[p].r.msg,back[p].url_adr,back[p].url_fil);
test_flush;
}
if (cache->txt) {
state="empty";
}
}
} else {
if ( (opt->debug>0) && (opt->log!=NULL) ) {
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: transfer-status: link error (%d, '%s'): %s%s"LF,back[p].r.statuscode,back[p].r.msg,back[p].url_adr,back[p].url_fil);
}
if (cache->txt) {
state="error";
}
}
if (cache->txt) {
fprintf(cache->txt,
"%d\t"
"%s ('%s')\t"
"%s\t"
"%s%s\t"
"%s%s%s\t%s\t"
"(from %s%s%s)"
LF,
back[p].r.statuscode,
state, escape_check_url_addr(OPT_GET_BUFF(opt),back[p].r.msg),
escape_check_url_addr(OPT_GET_BUFF(opt),back[p].r.contenttype),
((back[p].r.etag[0])?"etag:":((back[p].r.lastmodified[0])?"date:":"")), escape_check_url_addr(OPT_GET_BUFF(opt),(back[p].r.etag[0])?back[p].r.etag:(back[p].r.lastmodified)),
(link_has_authority(back[p].url_adr) ? "" : "http://"),escape_check_url_addr(OPT_GET_BUFF(opt),back[p].url_adr),escape_check_url_addr(OPT_GET_BUFF(opt),back[p].url_fil),escape_check_url_addr(OPT_GET_BUFF(opt),back[p].url_sav),
(link_has_authority(back[p].referer_adr) || !back[p].referer_adr[0]) ? "" : "http://",escape_check_url_addr(OPT_GET_BUFF(opt),back[p].referer_adr),escape_check_url_addr(OPT_GET_BUFF(opt),back[p].referer_fil)
);
if (opt->flush)
fflush(cache->txt);
}
/* Cache */
if (!IS_DELAYED_EXT(back[p].url_sav)) {
cache_mayadd(opt,cache,&back[p].r,back[p].url_adr,back[p].url_fil,back[p].url_sav);
} else {
if (!HTTP_IS_OK(back[p].r.statuscode)) {
if ( (opt->debug>0) && (opt->log!=NULL) ) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"redirect to %s%s"LF,back[p].url_adr,back[p].url_fil);
}
/* Store only header reference */
cache_mayadd(opt,cache,&back[p].r,back[p].url_adr,back[p].url_fil,NULL);
} else {
/* Partial file, but marked as "ok" ? */
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"file not stored in cache due to bogus state (incomplete type caused by %s (%d)): %s%s"LF,back[p].r.msg,back[p].r.statuscode,back[p].url_adr,back[p].url_fil);
}
}
}
// status finished callback
RUN_CALLBACK1(opt, xfrstatus, &back[p]);
return 0;
} else { // testmode
if (back[p].r.statuscode / 100 >= 3) { /* Store 3XX, 4XX, 5XX test response codes, but NOT 2XX */
/* Cache */
cache_mayadd(opt,cache,&back[p].r,back[p].url_adr,back[p].url_fil,NULL);
}
}
}
}
return -1;
}
/* try to keep the connection alive */
int back_letlive(httrackp* opt, cache_back* cache, struct_back* sback, int p) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int checkerror;
htsblk* src = &back[p].r;
assertf(p >= 0 && p < back_max);
if (src && !src->is_file
&& src->soc != INVALID_SOCKET
&& src->statuscode >= 0 /* no timeout errors & co */
&& src->keep_alive_trailers == 0 /* not yet supported (chunk trailers) */
&& ! ( checkerror = check_sockerror(src->soc) )
/*&& !check_sockdata(src->soc)*/ /* no unexpected data */
) {
htsblk tmp;
memset(&tmp, 0, sizeof(tmp));
/* clear everything but connection: switch, close, and reswitch */
back_connxfr(src, &tmp);
back_delete(opt, cache, sback, p);
//deletehttp(src);
back_connxfr(&tmp, src);
src->req.flush_garbage=1; /* ignore CRLF garbage */
return 1;
}
return 0;
}
void back_connxfr(htsblk* src, htsblk* dst) {
dst->soc = src->soc;
src->soc = INVALID_SOCKET;
#if HTS_USEOPENSSL
dst->ssl = src->ssl;
src->ssl = 0;
dst->ssl_con = src->ssl_con;
src->ssl_con = NULL;
#endif
dst->keep_alive = src->keep_alive;
src->keep_alive = 0;
dst->keep_alive_max = src->keep_alive_max;
src->keep_alive_max = 0;
dst->keep_alive_t = src->keep_alive_t;
src->keep_alive_t = 0;
dst->debugid = src->debugid;
src->debugid = 0;
}
void back_move(lien_back* src, lien_back* dst) {
memcpy(dst, src, sizeof(lien_back));
memset(src, 0, sizeof(lien_back));
src->r.soc=INVALID_SOCKET;
src->status=STATUS_FREE;
src->r.location = src->location_buffer;
dst->r.location = dst->location_buffer;
}
void back_copy_static(const lien_back* src, lien_back* dst) {
memcpy(dst, src, sizeof(lien_back));
dst->r.soc=INVALID_SOCKET;
dst->r.adr = NULL;
dst->r.headers = NULL;
dst->r.out = NULL;
dst->r.location = dst->location_buffer;
dst->r.fp = NULL;
#if HTS_USEOPENSSL
dst->r.ssl_con = NULL;
#endif
}
static int back_data_serialize(FILE *fp, const void *data, size_t size) {
if ( fwrite(&size, 1, sizeof(size), fp) == sizeof(size)
&& ( size == 0 || fwrite(data, 1, size, fp) == size )
)
return 0;
return 1; /* error */
}
static int back_string_serialize(FILE *fp, const char *str) {
size_t size = ( str != NULL ) ? ( strlen(str) + 1 ) : 0;
return back_data_serialize(fp, str, size);
}
static int back_data_unserialize(FILE *fp, void **str, size_t *size) {
*str = NULL;
if (fread(size, 1, sizeof(*size), fp) == sizeof(*size)) {
if (*size == 0) /* serialized NULL ptr */
return 0;
*str = malloct(*size + 1);
if (*str == NULL)
return 1; /* error */
((char*) *str)[*size] = 0; /* guard byte */
if (fread(*str, 1, *size, fp) == *size)
return 0;
}
return 1; /* error */
}
static int back_string_unserialize(FILE *fp, char **str) {
size_t dummy;
return back_data_unserialize(fp, (void**) str, &dummy);
}
int back_serialize(FILE *fp, const lien_back* src) {
if (back_data_serialize(fp, src, sizeof(lien_back)) == 0
&& back_data_serialize(fp, src->r.adr, src->r.adr ? (size_t)src->r.size : 0) == 0
&& back_string_serialize(fp, src->r.headers) == 0
&& fflush(fp) == 0)
return 0;
return 1;
}
int back_unserialize(FILE *fp, lien_back** dst) {
size_t size;
*dst = NULL;
errno = 0;
if (back_data_unserialize(fp, (void**) dst, &size) == 0 && size == sizeof(lien_back)) {
(*dst)->tmpfile = NULL;
(*dst)->chunk_adr = NULL;
(*dst)->r.adr = NULL;
(*dst)->r.out = NULL;
(*dst)->r.location = (*dst)->location_buffer;
(*dst)->r.fp = NULL;
(*dst)->r.soc = INVALID_SOCKET;
#if HTS_USEOPENSSL
(*dst)->r.ssl_con = NULL;
#endif
if (back_data_unserialize(fp, (void**) &(*dst)->r.adr, &size) == 0)
{
(*dst)->r.size = size;
(*dst)->r.headers = NULL;
if (back_string_unserialize(fp, &(*dst)->r.headers) == 0)
return 0; /* ok */
if ((*dst)->r.headers != NULL)
freet((*dst)->r.headers);
}
if ((*dst)->r.adr != NULL)
freet((*dst)->r.adr);
}
if (dst != NULL)
freet(dst);
*dst = NULL;
return 1; /* error */
}
/* serialize a reference ; used to store references of files being downloaded in case of broken download */
/* Note: NOT utf-8 */
int back_serialize_ref(httrackp* opt, const lien_back* src) {
char *filename = url_savename_refname_fullpath(opt, src->url_adr, src->url_fil);
FILE *fp = fopen(filename, "wb");
if (fp == NULL) {
#ifdef _WIN32
if (mkdir(fconcat(OPT_GET_BUFF(opt), StringBuff(opt->path_log), CACHE_REFNAME)) == 0)
#else
if (mkdir(fconcat(OPT_GET_BUFF(opt), StringBuff(opt->path_log), CACHE_REFNAME), S_IRWXU | S_IRWXG | S_IRWXO) == 0)
#endif
{
/* note: local filename */
filename = url_savename_refname_fullpath(opt, src->url_adr, src->url_fil);
fp = fopen(filename, "wb");
}
}
if (fp != NULL) {
int ser = back_serialize(fp, src);
fclose(fp);
return ser;
}
return 1;
}
/* unserialize a reference ; used to store references of files being downloaded in case of broken download */
int back_unserialize_ref(httrackp* opt, const char *adr, const char *fil, lien_back** dst) {
char *filename = url_savename_refname_fullpath(opt, adr, fil);
FILE *fp = FOPEN(filename, "rb");
if (fp != NULL) {
int ser = back_unserialize(fp, dst);
fclose(fp);
if (ser != 0) { /* back_unserialize_ref() != 0 does not need cleaning up */
back_clear_entry(*dst); /* delete entry content */
freet(*dst); /* delete item */
*dst = NULL;
}
return ser;
}
return 1;
}
// clear, or leave for keep-alive
int back_maydelete(httrackp* opt,cache_back* cache,struct_back* sback, int p) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(p >= 0 && p < back_max);
if (p >= 0 && p < back_max) { // on sait jamais..
if (
/* Keep-alive authorized by user */
!opt->nokeepalive
/* Socket currently is keep-alive! */
&& back[p].r.keep_alive
/* Remaining authorized requests */
&& back[p].r.keep_alive_max > 1
/* Known keep-alive start (security) */
&& back[p].ka_time_start
/* We're on time */
&& time_local() < back[p].ka_time_start + back[p].r.keep_alive_t
/* Connection delay must not exceed keep-alive timeout */
&& ( opt->maxconn <= 0 || ( back[p].r.keep_alive_t > ( 1.0 / opt->maxconn ) ) )
) {
lien_back tmp;
strcpybuff(tmp.url_adr, back[p].url_adr);
if (back_letlive(opt, cache, sback, p)) {
strcpybuff(back[p].url_adr, tmp.url_adr);
back[p].status = STATUS_ALIVE; // alive & waiting
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"(Keep-Alive): successfully saved #%d (%s)"LF,
back[p].r.debugid,
back[p].url_adr); test_flush;
}
return 1;
}
}
back_delete(opt,cache,sback, p);
}
return 0;
}
// clear, or leave for keep-alive
void back_maydeletehttp(httrackp* opt, cache_back* cache, struct_back* sback, int p) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
TStamp lt = 0;
assertf(p >= 0 && p < back_max);
if (back[p].r.soc!=INVALID_SOCKET) {
int q;
if (
back[p].r.soc != INVALID_SOCKET /* security check */
&& back[p].r.statuscode >= 0 /* no timeout errors & co */
&& back[p].r.keep_alive_trailers == 0 /* not yet supported (chunk trailers) */
/* Socket not in I/O error status */
&& !back[p].r.is_file
&& !check_sockerror(back[p].r.soc)
/* Keep-alive authorized by user */
&& !opt->nokeepalive
/* Socket currently is keep-alive! */
&& back[p].r.keep_alive
/* Remaining authorized requests */
&& back[p].r.keep_alive_max > 1
/* Known keep-alive start (security) */
&& back[p].ka_time_start
/* We're on time */
&& ( lt = time_local() ) < back[p].ka_time_start + back[p].r.keep_alive_t
/* Connection delay must not exceed keep-alive timeout */
&& ( opt->maxconn <= 0 || ( back[p].r.keep_alive_t > ( 1.0 / opt->maxconn ) ) )
/* Available slot in backing */
&& ( q = back_search(opt, sback) ) >= 0
)
{
lien_back tmp;
strcpybuff(tmp.url_adr, back[p].url_adr);
deletehttp(&back[q].r); // security check
back_connxfr(&back[p].r, &back[q].r); // transfer live connection settings from p to q
back[q].ka_time_start = back[p].ka_time_start; // refresh
back[p].r.soc = INVALID_SOCKET;
strcpybuff(back[q].url_adr, tmp.url_adr); // address
back[q].status = STATUS_ALIVE; // alive & waiting
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"(Keep-Alive): successfully preserved #%d (%s)"LF,
back[q].r.debugid,
back[q].url_adr); test_flush;
}
} else {
deletehttp(&back[p].r);
back[p].r.soc = INVALID_SOCKET;
}
}
}
/* attempt to attach a live connection to this slot */
int back_trylive(httrackp* opt,cache_back* cache,struct_back* sback, int p) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(p >= 0 && p < back_max);
if (p>=0 && back[p].status != STATUS_ALIVE) { // we never know..
int i = back_searchlive(opt,sback, back[p].url_adr); // search slot
if (i >= 0 && i != p) {
deletehttp(&back[p].r); // security check
back_connxfr(&back[i].r, &back[p].r); // transfer live connection settings from i to p
back_delete(opt,cache,sback, i); // delete old slot
back[p].status=STATUS_CONNECTING; // ready to connect
return 1; // success: will reuse live connection
}
}
return 0;
}
/* search for a live position, or, if not possible, try to return a new one */
int back_searchlive(httrackp* opt, struct_back* sback, char* search_addr) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int i;
/* search for a live socket */
for(i = 0 ; i < back_max ; i++ ) {
if (back[i].status == STATUS_ALIVE) {
if (strfield2(back[i].url_adr, search_addr)) { /* same location (xxc: check also virtual hosts?) */
if (time_local() < back[i].ka_time_start + back[i].r.keep_alive_t) {
return i;
}
}
}
}
return -1;
}
int back_search_quick(struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int i;
/* try to find an empty place */
for(i = 0 ; i < back_max ; i++ ) {
if (back[i].status == STATUS_FREE) {
return i;
}
}
/* oops, can't find a place */
return -1;
}
int back_search(httrackp* opt,struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int i;
/* try to find an empty place */
if ( ( i = back_search_quick(sback) ) != -1)
return i;
/* couldn't find an empty place, try to requisition a keep-alive place */
for(i = 0 ; i < back_max ; i++ ) {
if (back[i].status == STATUS_ALIVE) {
lien_back* const back = sback->lnk;
/* close this place */
back_clear_entry(&back[i]); /* Already finalized (this is the night of the living dead) */
/*back_delete(opt,cache,sback, i);*/
return i;
}
}
/* oops, can't find a place */
return -1;
}
void back_set_finished(struct_back* sback, int p) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(p >= 0 && p < back_max);
if (p >= 0 && p < sback->count) { // we never know..
/* status: finished (waiting to be validated) */
back[p].status=STATUS_READY; /* finished */
/* close open r/w streams, if any */
if (back[p].r.fp!=NULL) {
fclose(back[p].r.fp);
back[p].r.fp=NULL;
}
if (back[p].r.out!=NULL) { // fermer fichier sortie
fclose(back[p].r.out);
back[p].r.out=NULL;
}
}
}
void back_set_locked(struct_back* sback, int p) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(p >= 0 && p < back_max);
if (p >= 0 && p < sback->count) {
/* status: locked (in process, do not swap on disk) */
back[p].locked = 1; /* locked */
}
}
void back_set_unlocked(struct_back* sback, int p) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(p >= 0 && p < back_max);
if (p >= 0 && p < sback->count) {
/* status: unlocked (can be swapped on disk) */
back[p].locked = 0; /* unlocked */
}
}
int back_flush_output(httrackp* opt, cache_back* cache, struct_back* sback, int p) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(p >= 0 && p < back_max);
if (p >= 0 && p < sback->count) { // on sait jamais..
/* close input file */
if (back[p].r.fp!=NULL) {
fclose(back[p].r.fp);
back[p].r.fp=NULL;
}
/* fichier de sortie */
if (back[p].r.out!=NULL) { // fermer fichier sortie
fclose(back[p].r.out);
back[p].r.out=NULL;
}
/* set file time */
if (back[p].r.is_write) { // ecriture directe
/* écrire date "remote" */
if (strnotempty(back[p].url_sav)
&& strnotempty(back[p].r.lastmodified)
&& fexist_utf8(back[p].url_sav)) // normalement existe si on a un fichier de sortie
{
set_filetime_rfc822(back[p].url_sav,back[p].r.lastmodified);
}
/* executer commande utilisateur après chargement du fichier */
//xx usercommand(opt,0,NULL,back[p].url_sav, back[p].url_adr, back[p].url_fil);
back[p].r.is_write=0;
}
return 1;
}
return 0;
}
// effacer entrée
int back_delete(httrackp* opt, cache_back* cache, struct_back* sback, int p) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(p >= 0 && p < back_max);
if (p >= 0 && p < sback->count) { // on sait jamais..
// Vérificateur d'intégrité
#if DEBUG_CHECKINT
_CHECKINT(&back[p],"Appel back_delete")
#endif
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_delete: #%d\n" _ (int) p);
#endif
// Finalize
if (!back[p].finalized) {
if (
(back[p].status == STATUS_READY) // ready
&&
(!back[p].testmode) // not test mode
&&
(back[p].r.statuscode>0) // not internal error
) {
if (opt != NULL && opt->debug>1 && opt->log!=NULL) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File '%s%s' -> %s not yet saved in cache - saving now"LF, back[p].url_adr, back[p].url_fil, back[p].url_sav); test_flush;
}
}
if (cache != NULL) {
back_finalize(opt, cache, sback, p);
}
}
back[p].finalized = 0;
// flush output buffers
(void) back_flush_output(opt, cache, sback, p);
return back_clear_entry(&back[p]);
}
return 0;
}
/* ensure that the entry is not locked */
void back_index_unlock(struct_back* sback, int p) {
lien_back* const back = sback->lnk;
if (back[p].locked) {
back[p].locked = 0; /* not locked anymore */
}
}
/* the entry is available again */
static void back_set_free(lien_back* back) {
back->locked = 0;
back->status = STATUS_FREE;
}
/* delete entry content (clear the entry), but don't unallocate the entry itself */
int back_clear_entry(lien_back* back) {
if (back != NULL) {
// Libérer tous les sockets, handles, buffers..
if (back->r.soc!=INVALID_SOCKET) {
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_delete: deletehttp\n");
#endif
deletehttp(&back->r);
back->r.soc=INVALID_SOCKET;
}
if (back->r.adr!=NULL) { // reste un bloc à désallouer
freet(back->r.adr);
back->r.adr=NULL;
}
if (back->chunk_adr!=NULL) { // reste un bloc à désallouer
freet(back->chunk_adr);
back->chunk_adr=NULL;
back->chunk_size=0;
back->chunk_blocksize=0;
back->is_chunk=0;
}
// only for security
if (back->tmpfile && back->tmpfile[0] != '\0') {
(void) unlink(back->tmpfile);
back->tmpfile = NULL;
}
// headers
if (back->r.headers != NULL) {
freet(back->r.headers);
back->r.headers = NULL;
}
// Tout nettoyer
memset(back, 0, sizeof(lien_back));
back->r.soc = INVALID_SOCKET;
back->r.location = back->location_buffer;
// Le plus important: libérer le champ
back_set_free(back);
return 1;
}
return 0;
}
/* Space left on backing stack */
int back_stack_available(struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int p=0,n=0;
for( ; p < back_max ; p++ )
if ( back[p].status == STATUS_FREE )
n++;
return n;
}
// ajouter un lien en backing
int back_add_if_not_exists(struct_back* sback,httrackp* opt,cache_back* cache,char* adr,char* fil,char* save,char* referer_adr,char* referer_fil,int test) {
back_clean(opt, cache, sback); /* first cleanup the backlog to ensure that we have some entry left */
if (!back_exist(sback,opt,adr,fil,save)) {
return back_add(sback, opt, cache, adr, fil, save, referer_adr, referer_fil, test);
}
return 0;
}
int back_add(struct_back* sback,httrackp* opt,cache_back* cache,char* adr,char* fil,char* save,char* referer_adr,char* referer_fil,int test) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int p=0;
char catbuff[CATBUFF_SIZE];
char catbuff2[CATBUFF_SIZE];
lien_back* itemback = NULL;
#if (defined(_DEBUG) || defined(DEBUG))
if (!test && back_exist(sback,opt,adr,fil,save)) {
int already_there = 0;
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_ERROR); fprintf(opt->log,"error: back_add(%s,%s,%s) duplicate"LF, adr, fil, save);
}
}
#endif
// vérifier cohérence de adr et fil (non vide!)
if (strnotempty(adr)==0) {
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"error: adr is empty for back_add"LF);
}
return -1; // erreur!
}
if (strnotempty(fil)==0) {
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"error: fil is empty for back_add"LF);
}
return -1; // erreur!
}
// FIN vérifier cohérence de adr et fil (non vide!)
// stats
opt->state.back_add_stats++;
// rechercher emplacement
back_clean(opt, cache, sback);
if ( ( p = back_search(opt, sback) ) >= 0) {
back[p].send_too[0]='\0'; // éventuels paramètres supplémentaires à transmettre au serveur
// clear r
if (back[p].r.soc!=INVALID_SOCKET) { /* we never know */
deletehttp(&back[p].r);
}
memset(&(back[p].r), 0, sizeof(htsblk));
back[p].r.soc=INVALID_SOCKET;
back[p].r.location=back[p].location_buffer;
// créer entrée
strcpybuff(back[p].url_adr,adr);
strcpybuff(back[p].url_fil,fil);
strcpybuff(back[p].url_sav,save);
//back[p].links_index = links_index;
// copier referer si besoin
strcpybuff(back[p].referer_adr,"");
strcpybuff(back[p].referer_fil,"");
if ((referer_adr) && (referer_fil)) { // existe
if ((strnotempty(referer_adr)) && (strnotempty(referer_fil))) { // non vide
if (referer_adr[0]!='!') { // non détruit
if (strcmp(referer_adr,"file://")) { // PAS file://
if (strcmp(referer_adr,"primary")) { // pas referer 1er lien
strcpybuff(back[p].referer_adr,referer_adr);
strcpybuff(back[p].referer_fil,referer_fil);
}
}
}
}
}
// sav ne sert à rien pour le moment
back[p].r.size=0; // rien n'a encore été chargé
back[p].r.adr=NULL; // pas de bloc de mémoire
back[p].r.is_write=0; // à priori stockage en mémoire
back[p].maxfile_html=opt->maxfile_html;
back[p].maxfile_nonhtml=opt->maxfile_nonhtml;
back[p].testmode=test; // mode test?
if (!opt->http10) // option "forcer 1.0" désactivée
back[p].http11=1; // autoriser http/1.1
back[p].head_request=0;
if (strcmp(back[p].url_sav,BACK_ADD_TEST)==0) // HEAD
back[p].head_request=1;
else if (strcmp(back[p].url_sav,BACK_ADD_TEST2)==0) // test en GET
back[p].head_request=2; // test en get
/* Stop requested - abort backing */
/* For update mode: second check after cache lookup not to lose all previous cache data ! */
if (opt->state.stop && !opt->is_update) {
back[p].r.statuscode=STATUSCODE_INVALID; // fatal
strcpybuff(back[p].r.msg,"mirror stopped by user");
back[p].status=STATUS_READY; // terminé
back_set_finished(sback, p);
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"File not added due to mirror cancel: %s%s"LF,adr,fil); test_flush;
}
return 0;
}
// test "fast header" cache ; that is, tests we did that lead to 3XX/4XX/5XX response codes
if (cache->cached_tests != NULL) {
intptr_t ptr = 0;
if (inthash_read(cache->cached_tests, concat(OPT_GET_BUFF(opt), adr, fil), &ptr)) { // gotcha
if (ptr != 0) {
char* text = (char*) ptr;
char* lf = strchr(text, '\n');
int code = 0;
if (sscanf(text, "%d", &code) == 1) { // got code
back[p].r.statuscode=code;
back[p].status=STATUS_READY; // terminé
if (lf != NULL && *lf != '\0') { // got location ?
strcpybuff(back[p].r.location, lf + 1);
}
return 0;
}
}
}
}
// tester cache
if ((strcmp(adr,"file://")) /* pas fichier */
&& ( (!test) || (cache->type==1) ) /* cache prioritaire, laisser passer en test! */
&& ( (strnotempty(save)) || (strcmp(fil,"/robots.txt")==0) ) ) { // si en test on ne doit pas utiliser le cache sinon telescopage avec le 302..
#if HTS_FAST_CACHE
intptr_t hash_pos;
int hash_pos_return=0;
#else
char* a=NULL;
#endif
#if HTS_FAST_CACHE
if (cache->hashtable) {
#else
if (cache->use) {
#endif
char BIGSTK buff[HTS_URLMAXSIZE*4];
#if HTS_FAST_CACHE
strcpybuff(buff,adr); strcatbuff(buff,fil);
hash_pos_return=inthash_read(cache->hashtable,buff,&hash_pos);
#else
buff[0]='\0'; strcatbuff(buff,"\n"); strcatbuff(buff,adr); strcatbuff(buff,"\n"); strcatbuff(buff,fil); strcatbuff(buff,"\n");
a=strstr(cache->use,buff);
#endif
// Ok, noté en cache->. mais bien présent dans le cache ou sur disque?
#if HTS_FAST_CACHE
// negative values when data is not in cache
if (hash_pos_return < 0) {
#else
if (a) {
#endif
if (!test) { // non mode test
#if HTS_FAST_CACHE==0
int pos=-1;
a+=strlen(buff);
sscanf(a,"%d",&pos); // lire position
#endif
#if HTS_FAST_CACHE==0
if (pos<0) { // pas de mise en cache data, vérifier existence
#endif
/* note: no check with IS_DELAYED_EXT() enabled - postcheck by client please! */
if (save[0] != '\0' && !IS_DELAYED_EXT(save) && fsize_utf8(fconv(catbuff,save)) <= 0) { // fichier final n'existe pas ou est vide!
int found=0;
/* It is possible that the file has been moved due to changes in build structure */
{
char BIGSTK previous_save[HTS_URLMAXSIZE*2];
htsblk r;
previous_save[0] = '\0';
r = cache_readex(opt, cache, adr, fil, /*head*/NULL, /*bound to back[p] (temporary)*/back[p].location_buffer, previous_save, /*ro*/1);
/* Is supposed to be on disk only */
if (r.is_write && previous_save[0] != '\0') {
/* Exists, but with another (old) filename: rename (almost) silently */
if (strcmp(previous_save, save) != 0 && fexist_utf8(fconv(catbuff, previous_save))) {
rename(fconv(catbuff, previous_save), fconv(catbuff2,save));
if (fexist_utf8(fconv(catbuff,save))) {
found = 1;
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File '%s' has been renamed since last mirror to '%s' ; applying changes"LF, previous_save, save); test_flush;
}
} else {
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_ERROR); fprintf(opt->log,"Could not rename '%s' to '%s' ; will have to retransfer it"LF, previous_save, save); test_flush;
}
}
}
}
back[p].location_buffer[0] = '\0';
}
/* Not found ? */
if (!found) {
#if HTS_FAST_CACHE
hash_pos_return=0;
#else
a=NULL;
#endif
// dévalider car non présent sur disque dans structure originale!!!
// sinon, le fichier est ok à priori, mais on renverra un if-modified-since pour
// en être sûr
if (opt->norecatch) { // tester norecatch
if (!fexist_utf8(fconv(catbuff,save))) { // fichier existe pas mais déclaré: on l'a effacé
FILE* fp=FOPEN(fconv(catbuff,save),"wb");
if (fp) fclose(fp);
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"Previous file '%s' not found (erased by user ?), ignoring: %s%s"LF,save,back[p].url_adr,back[p].url_fil); test_flush;
}
}
} else {
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"Previous file '%s' not found (erased by user ?), recatching: %s%s"LF,save,back[p].url_adr,back[p].url_fil); test_flush;
}
}
}
} // fsize() <= 0
#if HTS_FAST_CACHE==0
}
#endif
}
}
//
} else {
#if HTS_FAST_CACHE
hash_pos_return=0;
#else
a=NULL;
#endif
}
// Existe pas en cache, ou bien pas de cache présent
#if HTS_FAST_CACHE
if (hash_pos_return) { // OK existe en cache (et données aussi)!
#else
if (a!=NULL) { // OK existe en cache (et données aussi)!
#endif
const int cache_is_prioritary = cache->type == 1 || opt->state.stop != 0;
if (cache_is_prioritary) { // cache prioritaire (pas de test if-modified..)
// dans ce cas on peut également lire des réponses cachées comme 404,302...
// lire dans le cache
if (!test)
back[p].r = cache_read(opt,cache,adr,fil,save, back[p].location_buffer);
else
back[p].r = cache_read(opt,cache,adr,fil,NULL, back[p].location_buffer); // charger en tête uniquement du cache
/* ensure correct location buffer set */
back[p].r.location=back[p].location_buffer;
/* Interdiction taille par le wizard? --> détruire */
if (back[p].r.statuscode != -1) { // pas d'erreur de lecture
if (!back_checksize(opt,&back[p],0)) {
back[p].status=STATUS_READY; // FINI
back_set_finished(sback, p);
back[p].r.statuscode=STATUSCODE_TOO_BIG;
if (!back[p].testmode)
strcpybuff(back[p].r.msg,"Cached file skipped (too big)");
else
strcpybuff(back[p].r.msg,"Test: Cached file skipped (too big)");
return 0;
}
}
if (back[p].r.statuscode != -1 || IS_DELAYED_EXT(save)) { // pas d'erreur de lecture ou test retardé
if ((opt->debug>0) && (opt->log!=NULL)) {
if (!test) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File immediately loaded from cache: %s%s"LF,back[p].url_adr,back[p].url_fil); test_flush;
} else {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File immediately tested from cache: %s%s"LF,back[p].url_adr,back[p].url_fil); test_flush;
}
}
back[p].r.notmodified=1; // fichier non modifié
back[p].status=STATUS_READY; // OK prêt
//file_notify(back[p].url_adr, back[p].url_fil, back[p].url_sav, 0, 0, back[p].r.notmodified); // not modified
back_set_finished(sback, p);
// finalize transfer
if (!test) {
if (back[p].r.statuscode>0) {
back_finalize(opt,cache,sback,p);
}
}
return 0;
} else { // erreur
// effacer r
memset(&(back[p].r), 0, sizeof(htsblk)); back[p].r.soc=INVALID_SOCKET; back[p].r.location=back[p].location_buffer;
// et continuer (chercher le fichier)
}
} else if (cache->type==2) { // si en cache, demander de tester If-Modified-Since
htsblk r;
cache_header(opt,cache,adr,fil,&r);
/* Interdiction taille par le wizard? */
{
LLint save_totalsize=back[p].r.totalsize;
back[p].r.totalsize=r.totalsize;
if (!back_checksize(opt,&back[p],1)) {
r.statuscode = STATUSCODE_INVALID;
//
back[p].status=STATUS_READY; // FINI
back_set_finished(sback, p);
back[p].r.statuscode=STATUSCODE_TOO_BIG;
deletehttp(&back[p].r); back[p].r.soc=INVALID_SOCKET;
if (!back[p].testmode)
strcpybuff(back[p].r.msg,"File too big");
else
strcpybuff(back[p].r.msg,"Test: File too big");
return 0;
}
back[p].r.totalsize=save_totalsize;
}
if (r.statuscode != -1) {
if (r.statuscode==HTTP_OK) { // uniquement des 200 (OK)
if (strnotempty(r.etag)) { // ETag (RFC2616)
/*
- If both an entity tag and a Last-Modified value have been
provided by the origin server, SHOULD use both validators in
cache-conditional requests. This allows both HTTP/1.0 and
HTTP/1.1 caches to respond appropriately.
*/
if (strnotempty(r.lastmodified))
sprintf(back[p].send_too,"If-None-Match: %s\r\nIf-Modified-Since: %s\r\n",r.etag,r.lastmodified);
else
sprintf(back[p].send_too,"If-None-Match: %s\r\n",r.etag);
}
else if (strnotempty(r.lastmodified))
sprintf(back[p].send_too,"If-Modified-Since: %s\r\n",r.lastmodified);
else if (strnotempty(cache->lastmodified))
sprintf(back[p].send_too,"If-Modified-Since: %s\r\n",cache->lastmodified);
/* this is an update of a file */
if (strnotempty(back[p].send_too))
back[p].is_update=1;
back[p].r.req.nocompression=1; /* Do not compress when updating! */
}
}
#if DEBUGCA
printf("..is modified test %s\n",back[p].send_too);
#endif
}
}
/* Not in cache ; maybe in temporary cache ? Warning: non-movable "url_sav" */
else if (back_unserialize_ref(opt, adr, fil, &itemback) == 0) {
const long file_size = fsize_utf8(itemback->url_sav);
/* Found file on disk */
if (file_size > 0) {
char *send_too = back[p].send_too;
sprintf(send_too, "Range: bytes="LLintP"-\r\n", (LLint) file_size);
send_too += strlen(send_too);
/* add etag information */
if (strnotempty(itemback->r.etag)) {
sprintf(send_too,"If-Match: %s\r\n", itemback->r.etag);
send_too += strlen(send_too);
}
/* add date information */
if (strnotempty(itemback->r.lastmodified)) {
sprintf(send_too,"If-Unmodified-Since: %s\r\n", itemback->r.lastmodified);
send_too += strlen(send_too);
}
back[p].http11=1; /* 1.1 */
back[p].range_req_size=(LLint) file_size;
back[p].r.req.range_used=1;
back[p].is_update=1; /* this is an update of a file */
back[p].r.req.nocompression=1; /* Do not compress when updating! */
} else {
/* broken ; remove */
url_savename_refname_remove(opt, adr, fil);
}
/* cleanup */
back_clear_entry(itemback); /* delete entry content */
freet(itemback); /* delete item */
itemback = NULL;
}
/* Not in cache or temporary cache ; found on disk ? (hack) */
else if (fexist_utf8(save)) {
off_t sz=fsize_utf8(save);
// Bon, là il est possible que le fichier ait été partiellement transféré
// (s'il l'avait été en totalité il aurait été inscrit dans le cache ET existerait sur disque)
// PAS de If-Modified-Since, on a pas connaissance des données à la date du cache
// On demande juste les données restantes si le date est valide (206), tout sinon (200)
if ((ishtml(opt,save) != 1) && (ishtml(opt,back[p].url_fil)!=1)) { // NON HTML (liens changés!!)
if (sz>0) { // Fichier non vide? (question bête, sinon on transfert tout!)
char lastmodified[256];
get_filetime_rfc822(save, lastmodified);
if (strnotempty(lastmodified)) { /* pas de If-.. possible */
#if DEBUGCA
printf("..if unmodified since %s size "LLintP"\n", lastmodified, (LLint)sz);
#endif
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File partially present ("LLintP" bytes): %s%s"LF,(LLint)sz,back[p].url_adr,back[p].url_fil); test_flush;
}
/* impossible - don't have etag or date
if (strnotempty(back[p].r.etag)) { // ETag (RFC2616)
sprintf(back[p].send_too,"If-None-Match: %s\r\n",back[p].r.etag);
back[p].http11=1; // En tête 1.1
} else if (strnotempty(back[p].r.lastmodified)) {
sprintf(back[p].send_too,"If-Unmodified-Since: %s\r\n",back[p].r.lastmodified);
back[p].http11=1; // En tête 1.1
} else
*/
if (strlen(lastmodified)) {
sprintf(back[p].send_too,
"If-Unmodified-Since: %s\r\nRange: bytes="LLintP"-\r\n"
, lastmodified, (LLint)sz);
back[p].http11=1; // En tête 1.1
back[p].is_update=1; /* this is an update of a file */
back[p].range_req_size=sz;
back[p].r.req.range_used=1;
back[p].r.req.nocompression=1;
} else {
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"Could not find timestamp for partially present file, restarting (lost "LLintP" bytes): %s%s"LF,(LLint)sz,back[p].url_adr,back[p].url_fil); test_flush;
}
}
} else {
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_WARNING);
/*
if (opt->http10)
fprintf(opt->log,"File partially present (%d bytes) retransfered due to HTTP/1.0 settings: %s%s"LF,sz,back[p].url_adr,back[p].url_fil);
else
*/
fprintf(opt->log,"File partially present ("LLintP" bytes) retransfered due to lack of cache: %s%s"LF,(LLint)sz,back[p].url_adr,back[p].url_fil);
test_flush;
}
/* Sinon requête normale... */
back[p].http11=0;
}
} else if (opt->norecatch) { // tester norecatch
filenote(&opt->state.strc,save,NULL); // ne pas purger tout de même
file_notify(opt,back[p].url_adr, back[p].url_fil, back[p].url_sav, 0, 0, back[p].r.notmodified);
back[p].status=STATUS_READY; // OK prêt
back_set_finished(sback, p);
back[p].r.statuscode=STATUSCODE_INVALID; // erreur
strcpybuff(back[p].r.msg,"Null-size file not recaught");
return 0;
}
} else {
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_WARNING);
fprintf(opt->log,"HTML file ("LLintP" bytes) retransfered due to lack of cache: %s%s"LF,(LLint)sz,back[p].url_adr,back[p].url_fil);
test_flush;
}
/* Sinon requête normale... */
back[p].http11=0;
}
}
}
/* Stop requested - abort backing */
if (opt->state.stop) {
back[p].r.statuscode=STATUSCODE_INVALID; // fatal
strcpybuff(back[p].r.msg,"mirror stopped by user");
back[p].status=STATUS_READY; // terminé
back_set_finished(sback, p);
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"File not added due to mirror cancel: %s%s"LF,adr,fil); test_flush;
}
return 0;
}
{
///htsblk r; non directement dans la structure-réponse!
T_SOC soc;
// ouvrir liaison, envoyer requète
// ne pas traiter ou recevoir l'en tête immédiatement
memset(&(back[p].r), 0, sizeof(htsblk)); back[p].r.soc=INVALID_SOCKET; back[p].r.location=back[p].location_buffer;
// recopier proxy
if ((back[p].r.req.proxy.active = opt->proxy.active)) {
if (StringBuff(opt->proxy.bindhost) != NULL)
strcpybuff(back[p].r.req.proxy.bindhost, StringBuff(opt->proxy.bindhost));
if (StringBuff(opt->proxy.name) != NULL)
strcpybuff(back[p].r.req.proxy.name, StringBuff(opt->proxy.name));
back[p].r.req.proxy.port = opt->proxy.port;
}
// et user-agent
strcpy(back[p].r.req.user_agent,StringBuff(opt->user_agent));
strcpy(back[p].r.req.referer,StringBuff(opt->referer));
strcpy(back[p].r.req.from,StringBuff(opt->from));
strcpy(back[p].r.req.lang_iso,StringBuff(opt->lang_iso));
back[p].r.req.user_agent_send=opt->user_agent_send;
// et http11
back[p].r.req.http11=back[p].http11;
back[p].r.req.nocompression=opt->nocompression;
back[p].r.req.nokeepalive=opt->nokeepalive;
// mode ftp, court-circuit!
if (strfield(back[p].url_adr,"ftp://")) {
if (back[p].testmode) {
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"error: forbidden test with ftp link for back_add"LF);
}
return -1; // erreur pas de test permis
}
if (!(back[p].r.req.proxy.active && opt->ftp_proxy)) { // connexion directe, gérée en thread
FTPDownloadStruct *str = (FTPDownloadStruct*) malloc(sizeof(FTPDownloadStruct));
str->pBack = &back[p];
str->pOpt = opt;
/* */
back[p].status=STATUS_FTP_TRANSFER; // connexion ftp
#if USE_BEGINTHREAD
launch_ftp(str);
#else
#error Must have pthreads
#endif
return 0;
}
}
#if HTS_USEMMS
else if (strfield(back[p].url_adr,"mms://")) {
MMSDownloadStruct str;
if (back[p].testmode) {
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"error: forbidden test with mms link for back_add"LF);
}
return -1; // erreur pas de test permis
}
if (back[p].r.req.proxy.active) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"warning: direct connection for mms links (proxy settings ignored)"LF);
}
back[p].status=STATUS_FTP_TRANSFER; // connexion externe
str.pBack = &back[p];
str.pOpt = opt;
launch_mms(&str);
return 0;
}
#endif
#if HTS_USEOPENSSL
else if (SSL_is_available && strfield(back[p].url_adr,"https://")) { // let's rock
back[p].r.ssl = 1;
// back[p].r.ssl_soc = NULL;
back[p].r.ssl_con = NULL;
}
#endif
if (!back_trylive(opt, cache, sback, p)) {
#if HTS_XGETHOST
#if HDEBUG
printf("back_solve..\n");
#endif
back[p].status=STATUS_WAIT_DNS; // tentative de résolution du nom de host
soc=INVALID_SOCKET; // pas encore ouverte
back_solve(opt, &back[p]); // préparer
if (host_wait(opt, &back[p])) { // prêt, par ex fichier ou dispo dans dns
#if HDEBUG
printf("ok, dns cache ready..\n");
#endif
soc=http_xfopen(opt,0,0,0,back[p].send_too,adr,fil,&(back[p].r));
if (soc==INVALID_SOCKET) {
back[p].status=STATUS_READY; // fini, erreur
back_set_finished(sback, p);
}
}
//
#else
//
#if CNXDEBUG
printf("XFopen..\n");
#endif
if (strnotempty(back[p].send_too)) // envoyer un if-modified-since
#if HTS_XCONN
soc=http_xfopen(0,0,0,back[p].send_too,adr,fil,&(back[p].r));
#else
soc=http_xfopen(0,0,1,back[p].send_too,adr,fil,&(back[p].r));
#endif
else
#if HTS_XCONN
soc=http_xfopen(test,0,0,NULL,adr,fil,&(back[p].r));
#else
soc=http_xfopen(test,0,1,NULL,adr,fil,&(back[p].r));
#endif
#endif
} else {
soc = back[p].r.soc;
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"(Keep-Alive): successfully linked #%d (for %s%s)"LF,
back[p].r.debugid,
back[p].url_adr, back[p].url_fil); test_flush;
}
}
if (opt->timeout>0) { // gestion du opt->timeout
back[p].timeout=opt->timeout;
back[p].timeout_refresh=time_local();
} else {
back[p].timeout=-1; // pas de gestion (default)
}
if (opt->rateout>0) { // gestion d'un taux minimum de transfert toléré
back[p].rateout=opt->rateout;
back[p].rateout_time=time_local();
} else {
back[p].rateout=-1; // pas de gestion (default)
}
// Note: on charge les code-page erreurs (erreur 404, etc) dans le cas où cela est
// rattrapable (exemple: 301,302 moved xxx -> refresh sur la page!)
//if ((back[p].statuscode!=HTTP_OK) || (soc<0)) { // ERREUR HTTP/autre
#if CNXDEBUG
printf("Xfopen ok, poll..\n");
#endif
#if HTS_XGETHOST
if (soc!=INVALID_SOCKET)
if (back[p].status==STATUS_WAIT_DNS) { // pas d'erreur
if (!back[p].r.is_file)
back[p].status=STATUS_CONNECTING; // connexion en cours
else
back[p].status=1; // fichier
}
#else
if (soc==INVALID_SOCKET) { // erreur socket
back[p].status=STATUS_READY; // FINI
back_set_finished(sback, p);
//if (back[p].soc!=INVALID_SOCKET) deletehttp(back[p].soc);
back[p].r.soc=INVALID_SOCKET;
} else {
if (!back[p].r.is_file)
#if HTS_XCONN
back[p].status=STATUS_CONNECTING; // connexion en cours
#else
back[p].status=99; // chargement en tête en cours
#endif
else
back[p].status=1; // chargement fichier
#if BDEBUG==1
printf("..loading header\n");
#endif
}
#endif
}
// note: si il y a erreur (404,etc) status=2 (terminé/échec) mais
// le lien est considéré comme traité
//if (back[p].soc<0) // erreur
// return -1;
return 0;
} else {
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"error: no space left in stack for back_add"LF);
if ( ( opt->state.debug_state & 1 ) == 0 ) { /* debug_state<0> == debug 'no space left in stack' */
int i;
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"debug: DUMPING %d BLOCKS"LF, back_max);
opt->state.debug_state |= 1; /* once */
/* OUTPUT FULL DEBUG INFORMATION THE FIRST TIME WE SEE THIS VERY ANNOYING BUG,
HOPING THAT SOME USER REPORT WILL QUICKLY SOLVE THIS PROBLEM :p */
for(i = 0 ; i < back_max ; i++ ) {
if (back[i].status != -1) {
int may_clean = slot_can_be_cleaned(&back[i]);
int may_finalize = may_clean && slot_can_be_finalized(opt, &back[i]);
int may_serialize = slot_can_be_cached_on_disk(&back[i]);
HTS_LOG(opt,LOG_INFO);
fprintf(opt->log,
"debug: back[%03d]: may_clean=%d, may_finalize_disk=%d, may_serialize=%d:"LF
"\t" "finalized(%d), status(%d), locked(%d), delayed(%d), test(%d), "LF
"\t" "statuscode(%d), size(%d), is_write(%d), may_hypertext(%d), "LF
"\t" "contenttype(%s), url(%s%s), save(%s)"LF,
i,
may_clean, may_finalize, may_serialize,
back[i].finalized,
back[i].status,
back[i].locked,
IS_DELAYED_EXT(back[i].url_sav),
back[i].testmode,
back[i].r.statuscode,
(int) back[i].r.size,
back[i].r.is_write,
may_be_hypertext_mime(opt,back[i].r.contenttype, back[i].url_fil),
/* */
back[i].r.contenttype,
back[i].url_adr, back[i].url_fil,
back[i].url_sav ? back[i].url_sav : "<null>"
);
}
}
}
}
return -1; // plus de place
}
}
#if HTS_XGETHOST
#if USE_BEGINTHREAD
// lancement multithread du robot
typedef struct {
char iadr_p[HTS_URLMAXSIZE];
httrackp *opt;
} HostlookupStruct;
void Hostlookup(void* pP) {
HostlookupStruct *str = (HostlookupStruct*) pP;
char iadr[256];
t_dnscache* cache=_hts_cache(str->opt); // adresse du cache
t_hostent* hp;
int error_found=0;
// recopier (après id:pass)
#if DEBUGDNS
printf("resolv in background: %s\n",jump_identification(iadr_p));
#endif
strcpybuff(iadr,jump_identification(str->iadr_p));
// couper éventuel :
{
char *a;
if ( (a=jump_toport(iadr)) )
*a='\0'; // get rid of it
}
freet(pP);
hts_mutexlock(&dns_lock);
while(cache->n) {
if (strcmp(cache->iadr,iadr)==0) {
error_found=1;
}
cache=cache->n; // calculer queue
}
if (strcmp(cache->iadr,iadr)==0) {
error_found=1;
}
if (!error_found) {
// en gros copie de hts_gethostbyname sans le return
cache->n=(t_dnscache*) calloct(1,sizeof(t_dnscache));
if (cache->n!=NULL) {
t_fullhostent fullhostent_buffer;
strcpybuff(cache->n->iadr,iadr);
cache->n->host_length=0; /* pour le moment rien */
cache->n->n=NULL;
/* resolve */
#if DEBUGDNS
printf("gethostbyname() in progress for %s\n",iadr);
#endif
cache->n->host_length=-1;
memset(cache->n->host_addr, 0, sizeof(cache->n->host_addr));
hp=vxgethostbyname(iadr, &fullhostent_buffer);
if (hp!=NULL) {
memcpy(cache->n->host_addr, hp->h_addr, hp->h_length);
cache->n->host_length = hp->h_length;
}
}
} else {
#if DEBUGDNS
printf("aborting resolv for %s (found)\n",iadr);
#endif
}
hts_mutexrelease(&dns_lock);
#if DEBUGDNS
printf("quitting resolv for %s (result: %d)\n",iadr,(cache->n!=NULL)?cache->n->host_length:(-999));
#endif
}
#endif
// attendre que le host (ou celui du proxy) ait été résolu
// si c'est un fichier, la résolution est immédiate
// idem pour ftp://
void back_solve(httrackp *opt, lien_back* back) {
if ((!strfield(back->url_adr,"file://"))
&& ! strfield(back->url_adr,"ftp://")
#if HTS_USEMMS
&& ! strfield(back->url_adr,"mms://")
#endif
) {
//## if (back->url_adr[0]!=lOCAL_CHAR) { // qq chose à préparer
const char* a;
if (!(back->r.req.proxy.active))
a=back->url_adr;
else
a=back->r.req.proxy.name;
a = jump_protocol(a);
if (!hts_dnstest(opt, a)) { // non encore testé!..
// inscire en thread
#ifdef _WIN32
// Windows
#if USE_BEGINTHREAD
{
HostlookupStruct *str = (HostlookupStruct*)malloct(sizeof(HostlookupStruct));
if (str) {
strcpybuff(str->iadr_p, a);
str->opt = opt;
hts_newthread(Hostlookup, str);
}
}
#else
/*t_hostent* h=*/
/*hts_gethostbyname(a);*/ // calcul
#endif
#else
#if USE_BEGINTHREAD
char* p = calloct(strlen(a)+2,1);
if (p) {
strcpybuff(p,a);
hts_newthread( Hostlookup , p );
}
#else
// Sous Unix, le gethostbyname() est bloquant..
/*t_hostent* h=*/
/*hts_gethostbyname(a);*/ // calcul
#endif
#endif
}
}
}
// détermine si le host a pu être résolu
int host_wait(httrackp *opt, lien_back* back) {
if ((!strfield(back->url_adr,"file://"))
&& (!strfield(back->url_adr,"ftp://"))
#if HTS_USEMMS
&& (!strfield(back->url_adr,"mms://"))
#endif
) {
//## if (back->url_adr[0]!=lOCAL_CHAR) {
if (!(back->r.req.proxy.active)) {
return (hts_dnstest(opt, back->url_adr));
} else {
return (hts_dnstest(opt, back->r.req.proxy.name));
}
} else return 1; // prêt, fichier local
}
#endif
// élimine les fichiers non html en backing (anticipation)
// cleanup non-html files in backing to save backing space
// and allow faster "save in cache" operation
// also cleanup keep-alive sockets and ensure that not too many sockets are being opened
static int slot_can_be_cleaned(const lien_back* back) {
return
(back->status == STATUS_READY) // ready
/* Check autoclean */
&& (!back->testmode) // not test mode
&& (strnotempty(back->url_sav)) // filename exists
&& (HTTP_IS_OK(back->r.statuscode)) // HTTP "OK"
&& (back->r.size >= 0) // size>=0
;
}
static int slot_can_be_finalized(httrackp* opt, const lien_back* back) {
return
back->r.is_write // not in memory (on disk, ready)
&& !is_hypertext_mime(opt,back->r.contenttype, back->url_fil) // not HTML/hypertext
&& !may_be_hypertext_mime(opt,back->r.contenttype, back->url_fil) // may NOT be parseable mime type
/* Has not been added before the heap saw the link, or now exists on heap */
&& ( !back->early_add || hash_read(opt->hash,back->url_sav,"",0,opt->urlhack) >= 0 )
;
}
void back_clean(httrackp* opt,cache_back* cache,struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int oneMore = ( (opt->state._hts_in_html_parsing == 2 && opt->maxsoc >= 2) || (opt->state._hts_in_html_parsing == 1 && opt->maxsoc >= 4) ) ? 1 : 0; // testing links
int i;
for(i=0;i<back_max;i++) {
if (slot_can_be_cleaned(&back[i])) {
if (slot_can_be_finalized(opt, &back[i])) {
(void) back_flush_output(opt, cache, sback, i); // flush output buffers
usercommand(opt, 0, NULL, back[i].url_sav, back[i].url_adr, back[i].url_fil);
//if (back[i].links_index >= 0) {
// assertf(back[i].links_index < opt->hash->max_lien);
// opt->hash->liens[back[i].links_index]->pass2 = -1;
// // *back[i].pass2_ptr=-1; // Done!
//}
/* MANDATORY if we don't want back_fill() to endlessly put the same file on download! */
{
int index = hash_read(opt->hash,back[i].url_sav,"",0,opt->urlhack); // lecture type 0 (sav)
if (index >= 0) {
opt->hash->liens[index]->pass2 = -1; /* DONE! */
} else {
if (opt->log != NULL) {
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"engine: warning: entry cleaned up, but no trace on heap: %s%s (%s)"LF,back[i].url_adr, back[i].url_fil,back[i].url_sav);
test_flush;
}
}
}
HTS_STAT.stat_background++;
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_INFO); fprintf(opt->log,"File successfully written in background: %s"LF,back[i].url_sav); test_flush;
}
back_maydelete(opt,cache,sback,i); // May delete backing entry
} else {
if (!back[i].finalized) {
if (1) {
/* Ensure deleted or recycled socket */
/* BUT DO NOT YET WIPE back[i].r.adr */
if ( (opt->debug>1) && (opt->log!=NULL) ) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"file %s%s validated (cached, left in memory)"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
back_maydeletehttp(opt, cache, sback, i);
} else {
/*
NOT YET HANDLED CORRECTLY (READ IN NEW CACHE TO DO)
*/
/* Lock the entry but do not keep the html data in memory (in cache) */
if (opt->cache) {
htsblk r;
/* Ensure deleted or recycled socket */
back_maydeletehttp(opt, cache, sback, i);
assertf(back[i].r.soc == INVALID_SOCKET);
/* Check header */
cache_header(opt,cache,back[i].url_adr,back[i].url_fil,&r);
if (r.statuscode == HTTP_OK) {
if (back[i].r.soc == INVALID_SOCKET) {
/* Delete buffer and sockets */
deleteaddr(&back[i].r);
deletehttp(&back[i].r);
if ( (opt->debug>1) && (opt->log!=NULL) ) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"file %s%s temporarily left in cache to spare memory"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
}
} else {
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"Unexpected html cache lookup error during back clean"LF); test_flush;
}
}
// xxc xxc
}
}
}
}
} else if (back[i].status == STATUS_ALIVE) { // waiting (keep-alive)
if (
! back[i].r.keep_alive
|| back[i].r.soc == INVALID_SOCKET
|| back[i].r.keep_alive_max < 1
|| time_local() >= back[i].ka_time_start + back[i].r.keep_alive_t
) {
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"(Keep-Alive): live socket closed #%d (%s)"LF,
back[i].r.debugid,
back[i].url_adr);
test_flush;
}
back_delete(opt,cache,sback, i); // delete backing entry
}
}
}
/* switch connections to live ones */
for(i=0;i<back_max;i++) {
if (back[i].status == STATUS_READY) { // ready
if (back[i].r.soc != INVALID_SOCKET) {
back_maydeletehttp(opt,cache,sback, i);
}
}
}
/* delete sockets if too many keep-alive'd sockets in background */
if (opt->maxsoc > 0) {
int max = opt->maxsoc + oneMore;
int curr = back_nsoc_overall(sback);
if (curr > max) {
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"(Keep-Alive): deleting #%d sockets"LF,
curr - max); test_flush;
}
}
for(i = 0 ; i < back_max && curr > max ; i++) {
if (back[i].status == STATUS_ALIVE) {
back_delete(opt,cache,sback, i); // delete backing entry
curr--;
}
}
}
/* transfer ready slots to the storage hashtable */
{
int nxfr = back_cleanup_background(opt,cache,sback);
if (nxfr > 0 && (opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"(htsback): %d slots ready moved to background"LF, nxfr);
test_flush;
}
}
}
// attente (gestion des buffers des sockets)
void back_wait(struct_back* sback,httrackp* opt,cache_back* cache,TStamp stat_timestart) {
char catbuff[CATBUFF_SIZE];
lien_back* const back = sback->lnk;
const int back_max = sback->count;
unsigned int i_mod;
T_SOC nfds=INVALID_SOCKET;
fd_set fds,fds_c,fds_e; // fds pour lecture, connect (write), et erreur
int nsockets; // nbre sockets
LLint max_read_bytes; // max bytes read per sockets
struct timeval tv;
int do_wait=0;
int gestion_timeout=0;
int busy_recv=0; // pas de données pour le moment
int busy_state=0; // pas de connexions
int max_loop; // nombre de boucles max à parcourir..
int max_loop_chk=0;
unsigned int mod_random = (unsigned int) ( time_local() + HTS_STAT.HTS_TOTAL_RECV );
// max. number of loops
max_loop=8;
#if 1
// Cleanup the stack to save space!
back_clean(opt,cache,sback);
#endif
// recevoir tant qu'il y a des données (avec un maximum de max_loop boucles)
do_wait=0;
gestion_timeout=0;
do {
int max_c;
busy_state=busy_recv=0;
#if 0
check_rate(stat_timestart,opt->maxrate); // vérifier taux de transfert
#endif
// inscrire les sockets actuelles, et rechercher l'ID la plus élevée
FD_ZERO(&fds);
FD_ZERO(&fds_c);
FD_ZERO(&fds_e);
nsockets=0;
max_read_bytes=TAILLE_BUFFER; // maximum bytes that can be read
nfds=INVALID_SOCKET;
max_c=1;
for(i_mod = 0 ; i_mod < (unsigned int) back_max ; i_mod++) {
// for(i=0;i<back_max;i++) {
unsigned int i = ( i_mod + mod_random ) % ( back_max );
// en cas de gestion du connect préemptif
#if HTS_XCONN
if (back[i].status==STATUS_CONNECTING) { // connexion
do_wait=1;
// noter socket write
FD_SET(back[i].r.soc,&fds_c);
// noter socket erreur
FD_SET(back[i].r.soc,&fds_e);
// calculer max
if (max_c) {
max_c=0;
nfds=back[i].r.soc;
} else if (back[i].r.soc>nfds) {
// ID socket la plus élevée
nfds=back[i].r.soc;
}
} else
#endif
#if HTS_XGETHOST
if (back[i].status==STATUS_WAIT_DNS) { // attente
// rien à faire..
} else
#endif
// poll pour la lecture sur les sockets
if ((back[i].status>0) && (back[i].status<100)) { // en réception http
#if BDEBUG==1
//printf("....socket in progress: %d\n",back[i].r.soc);
#endif
// non local et non ftp
if (!back[i].r.is_file) {
//## if (back[i].url_adr[0]!=lOCAL_CHAR) {
// vérification de sécurité
if (back[i].r.soc!=INVALID_SOCKET) { // hey, you never know..
// Do not endlessly wait when receiving SSL http data (Patrick Pfeifer)
if (!(back[i].r.ssl && back[i].status > 0 && back[i].status < 1000)) {
do_wait=1;
// noter socket read
FD_SET(back[i].r.soc,&fds);
// noter socket error
FD_SET(back[i].r.soc,&fds_e);
// incrémenter nombre de sockets
nsockets++;
// calculer max
if (max_c) {
max_c=0;
nfds=back[i].r.soc;
} else if (back[i].r.soc>nfds) {
// ID socket la plus élevée
nfds=back[i].r.soc;
}
}
} else {
back[i].r.statuscode=STATUSCODE_CONNERROR;
if (back[i].status==STATUS_CONNECTING)
strcpybuff(back[i].r.msg,"Connect Error");
else
strcpybuff(back[i].r.msg,"Receive Error");
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"Unexpected socket error during pre-loop"LF); test_flush;
}
}
}
}
}
nfds++;
if (do_wait) { // attendre
// temps d'attente max: 2.5 seconde
tv.tv_sec=HTS_SOCK_SEC;
tv.tv_usec=HTS_SOCK_MS;
#if BDEBUG==1
printf("..select\n");
#endif
// poller les sockets-attention au noyau sous Unix..
#if HTS_WIDE_DEBUG
DEBUG_W("select\n");
#endif
select(nfds,&fds,&fds_c,&fds_e,&tv);
#if HTS_WIDE_DEBUG
DEBUG_W("select done\n");
#endif
}
// maximum data which can be received for a socket, if limited
if (nsockets) {
if (opt->maxrate>0) {
max_read_bytes = ( check_downloadable_bytes(opt->maxrate) / nsockets );
if (max_read_bytes > TAILLE_BUFFER) {
/* limit size */
max_read_bytes = TAILLE_BUFFER;
} else if (max_read_bytes < TAILLE_BUFFER) {
/* a small pause */
Sleep(10);
}
}
}
if (!max_read_bytes)
busy_recv=0;
// recevoir les données arrivées
for(i_mod = 0 ; i_mod < (unsigned int) back_max ; i_mod++) {
// for(i=0;i<back_max;i++) {
unsigned int i = ( i_mod + mod_random ) % ( back_max );
if (back[i].status>0) {
if (!back[i].r.is_file) { // not file..
if (back[i].r.soc!=INVALID_SOCKET) { // hey, you never know..
int err=FD_ISSET(back[i].r.soc,&fds_e);
if (err) {
if (back[i].r.soc!=INVALID_SOCKET) {
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait: deletehttp\n");
#endif
deletehttp(&back[i].r);
}
back[i].r.soc=INVALID_SOCKET;
back[i].r.statuscode=STATUSCODE_CONNERROR;
if (back[i].status==STATUS_CONNECTING)
strcpybuff(back[i].r.msg,"Connect Error");
else
strcpybuff(back[i].r.msg,"Receive Error");
if (back[i].status == STATUS_ALIVE) { /* Keep-alive socket */
back_delete(opt,cache,sback, i);
} else {
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
}
}
}
}
}
// ---- FLAG WRITE MIS A UN?: POUR LE CONNECT
if (back[i].status==STATUS_CONNECTING) { // attendre connect
int dispo=0;
// vérifier l'existance de timeout-check
if (!gestion_timeout)
if (back[i].timeout>0)
gestion_timeout=1;
// connecté?
dispo=FD_ISSET(back[i].r.soc,&fds_c);
if (dispo) { // ok connected!!
busy_state=1;
#if HTS_USEOPENSSL
/* SSL mode */
if (SSL_is_available && back[i].r.ssl) {
// handshake not yet launched
if (!back[i].r.ssl_con) {
SSL_CTX_set_options(openssl_ctx, SSL_OP_ALL);
// new session
back[i].r.ssl_con = SSL_new(openssl_ctx);
if (back[i].r.ssl_con) {
SSL_clear(back[i].r.ssl_con);
if (SSL_set_fd(back[i].r.ssl_con, back[i].r.soc) == 1) {
SSL_set_connect_state(back[i].r.ssl_con);
back[i].status = STATUS_SSL_WAIT_HANDSHAKE; /* handshake wait */
} else
back[i].r.statuscode=STATUSCODE_SSL_HANDSHAKE;
} else
back[i].r.statuscode=STATUSCODE_SSL_HANDSHAKE;
}
/* Error */
if (back[i].r.statuscode == STATUSCODE_SSL_HANDSHAKE) {
strcpybuff(back[i].r.msg, "bad SSL/TLS handshake");
deletehttp(&back[i].r);
back[i].r.soc=INVALID_SOCKET;
back[i].r.statuscode=STATUSCODE_NON_FATAL;
back[i].status=STATUS_READY;
back_set_finished(sback, i);
}
}
#endif
#if BDEBUG==1
printf("..connect ok on socket %d\n",back[i].r.soc);
#endif
if ((back[i].r.soc != INVALID_SOCKET) && (back[i].status==STATUS_CONNECTING)) {
/* limit nb. connections/seconds to avoid server overload */
/*if (opt->maxconn>0) {
Sleep(1000/opt->maxconn);
}*/
back[i].ka_time_start=time_local();
if (back[i].timeout>0) { // refresh timeout si besoin est
back[i].timeout_refresh=back[i].ka_time_start;
}
if (back[i].rateout>0) { // le taux de transfert de base sur le début de la connexion
back[i].rateout_time=back[i].ka_time_start;
}
// envoyer header
//if (strcmp(back[i].url_sav,BACK_ADD_TEST)!=0) // vrai get
HTS_STAT.stat_nrequests++;
if (!back[i].head_request)
http_sendhead(opt, opt->cookie,0,back[i].send_too,back[i].url_adr,back[i].url_fil,back[i].referer_adr,back[i].referer_fil,&back[i].r);
else if (back[i].head_request==2) // test en GET!
http_sendhead(opt, opt->cookie,0,back[i].send_too,back[i].url_adr,back[i].url_fil,back[i].referer_adr,back[i].referer_fil,&back[i].r);
else // test!
http_sendhead(opt, opt->cookie,1,back[i].send_too,back[i].url_adr,back[i].url_fil,back[i].referer_adr,back[i].referer_fil,&back[i].r);
back[i].status=99; // attendre en tête maintenant
}
}
// attente gethostbyname
}
#if HTS_USEOPENSSL
else if (SSL_is_available && back[i].status == STATUS_SSL_WAIT_HANDSHAKE) { // wait for SSL handshake
/* SSL mode */
if (back[i].r.ssl) {
int conn_code;
if ((conn_code = SSL_connect(back[i].r.ssl_con)) <= 0) {
/* non blocking I/O, will retry */
int err_code = SSL_get_error(back[i].r.ssl_con, conn_code);
if (
(err_code != SSL_ERROR_WANT_READ)
&&
(err_code != SSL_ERROR_WANT_WRITE)
) {
char tmp[256];
tmp[0]='\0';
ERR_error_string(err_code, tmp);
back[i].r.msg[0]='\0';
strncatbuff(back[i].r.msg, tmp, sizeof(back[i].r.msg) - 2);
if (!strnotempty(back[i].r.msg)) {
sprintf(back[i].r.msg, "SSL/TLS error %d", err_code);
}
deletehttp(&back[i].r);
back[i].r.soc=INVALID_SOCKET;
back[i].r.statuscode=STATUSCODE_NON_FATAL;
back[i].status=STATUS_READY;
back_set_finished(sback, i);
}
} else { /* got it! */
back[i].status=STATUS_CONNECTING; // back to waitconnect
}
} else {
strcpybuff(back[i].r.msg, "unexpected SSL/TLS error");
deletehttp(&back[i].r);
back[i].r.soc=INVALID_SOCKET;
back[i].r.statuscode=STATUSCODE_NON_FATAL;
back[i].status=STATUS_READY;
back_set_finished(sback, i);
}
}
#endif
#if HTS_XGETHOST
else if (back[i].status==STATUS_WAIT_DNS) { // attendre gethostbyname
#if DEBUGDNS
//printf("status 101 for %s\n",back[i].url_adr);
#endif
if (!gestion_timeout)
if (back[i].timeout>0)
gestion_timeout=1;
if (host_wait(opt, &back[i])) { // prêt
back[i].status=STATUS_CONNECTING; // attente connexion
if (back[i].timeout>0) { // refresh timeout si besoin est
back[i].timeout_refresh=time_local();
}
if (back[i].rateout>0) { // le taux de transfert de base sur le début de la connexion
back[i].rateout_time=time_local();
}
back[i].r.soc=http_xfopen(opt,0,0,0,back[i].send_too,back[i].url_adr,back[i].url_fil,&(back[i].r));
if (back[i].r.soc==INVALID_SOCKET) {
back[i].status=STATUS_READY; // fini, erreur
back_set_finished(sback, i);
if (back[i].r.soc!=INVALID_SOCKET) {
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(2): deletehttp\n");
#endif
deletehttp(&back[i].r);
}
back[i].r.soc=INVALID_SOCKET;
back[i].r.statuscode=STATUSCODE_NON_FATAL;
if (strnotempty(back[i].r.msg)==0)
strcpybuff(back[i].r.msg,"Unable to resolve host name");
}
}
// ---- FLAG READ MIS A UN?: POUR LA RECEPTION
}
#endif
#if USE_BEGINTHREAD
// ..rien à faire, c'est magic les threads
#else
else if (back[i].status==STATUS_FTP_TRANSFER) { // en réception ftp
if (!fexist(back[i].location_buffer)) { // terminé
FILE* fp;
fp=FOPEN(fconcat(OPT_GET_BUFF(opt), back[i].location_buffer,".ok"),"rb");
if (fp) {
int j=0;
fscanf(fp,"%d ",&(back[i].r.statuscode));
while(!feof(fp)) {
int c = fgetc(fp);
if (c!=EOF)
back[i].r.msg[j++]=c;
}
back[i].r.msg[j++]='\0';
fclose(fp);
UNLINK(fconcat(OPT_GET_BUFF(opt), back[i].location_buffer,".ok"));
strcpybuff(fconcat(OPT_GET_BUFF(opt), back[i].location_buffer,".ok"),"");
} else {
strcpybuff(back[i].r.msg,"Unknown ftp result, check if file is ok");
back[i].r.statuscode=STATUSCODE_INVALID;
}
back[i].status=STATUS_READY;
back_set_finished(sback, i);
// finalize transfer
if (back[i].r.statuscode>0) {
back_finalize(opt,cache,sback,i);
}
}
}
#endif
else if (back[i].status==STATUS_FTP_READY) { // ftp ready
back[i].status=STATUS_READY;
back_set_finished(sback, i);
// finalize transfer
if (back[i].r.statuscode>0) {
back_finalize(opt,cache,sback,i);
}
}
else if ((back[i].status>0) && (back[i].status<1000)) { // en réception http
int dispo=0;
// vérifier l'existance de timeout-check
if (!gestion_timeout)
if (back[i].timeout>0)
gestion_timeout=1;
// données dispo?
//## if (back[i].url_adr[0]!=lOCAL_CHAR)
if (back[i].r.is_file)
dispo=1;
else if (back[i].r.ssl)
dispo=1;
else
dispo=FD_ISSET(back[i].r.soc,&fds);
// Check transfer rate!
if (!max_read_bytes)
dispo=0; // limit transfer rate
if (dispo) { // données dispo
LLint retour_fread;
busy_recv=1; // on récupère encore
#if BDEBUG==1
printf("..data available on socket %d\n",back[i].r.soc);
#endif
// range size hack old location
#if HTS_DIRECTDISK
// Court-circuit:
// Peut-on stocker le fichier directement sur disque?
// Ahh que ca serait vachement mieux et que ahh que la mémoire vous dit merci!
if (back[i].status) {
if (back[i].r.is_write==0) { // mode mémoire
if (back[i].r.adr==NULL) { // rien n'a été écrit
if (!back[i].testmode) { // pas mode test
if (strnotempty(back[i].url_sav)) {
if (strcmp(back[i].url_fil,"/robots.txt")) {
if (back[i].r.statuscode==HTTP_OK) { // 'OK'
if (!is_hypertext_mime(opt,back[i].r.contenttype, back[i].url_fil)) { // pas HTML
if (opt->getmode&2) { // on peut ecrire des non html
int fcheck=0;
int last_errno = 0;
back[i].r.is_write=1; // écrire
if (back[i].r.compressed
&&
/* .gz are *NOT* depacked!! */
(strfield(get_ext(catbuff,back[i].url_sav),"gz") == 0)
) {
#if 1
#ifdef _WIN32
#undef tempnam
#define tempnam _tempnam
#endif
char *const tmp = tempnam(NULL, "httrack_temporaryGzipFile_");
if (tmp != NULL) {
strcpybuff(back[i].tmpfile_buffer, tmp);
free(tmp);
back[i].tmpfile = back[i].tmpfile_buffer;
} else {
back[i].tmpfile = NULL;
}
#else
back[i].tmpfile_buffer[0]='\0';
back[i].tmpfile=tmpnam(back[p].tmpfile_buffer);
#endif
if (back[i].tmpfile != NULL && back[i].tmpfile[0]) {
if ((back[i].r.out=FOPEN(back[i].tmpfile,"wb")) == NULL) {
last_errno = errno;
}
}
} else {
file_notify(opt,back[i].url_adr, back[i].url_fil, back[i].url_sav, 1, 1, back[i].r.notmodified);
back[i].r.compressed=0;
if ((back[i].r.out=filecreate(&opt->state.strc, back[i].url_sav)) == NULL) {
last_errno = errno;
}
}
if (back[i].r.out==NULL) {
errno = last_errno;
if ((fcheck=check_fatal_io_errno())) {
HTS_LOG(opt,LOG_ERROR); fprintf(opt->log,"Mirror aborted: disk full or filesystem problems"LF); test_flush;
opt->state.exit_xh=-1; /* fatal error */
}
}
#if HDEBUG
printf("direct-disk: %s\n",back[i].url_sav);
#endif
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File received from net to disk: %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
if (back[i].r.out==NULL) {
if (opt->log) {
HTS_LOG(opt,LOG_ERROR);
fprintf(opt->log,"Unable to save file %s : %s"LF,back[i].url_sav, strerror(last_errno));
if (fcheck) {
HTS_LOG(opt,LOG_ERROR);
fprintf(opt->log,"* * Fatal write error, giving up"LF);
}
test_flush;
}
back[i].r.is_write=0; // erreur, abandonner
} else {
#ifndef _WIN32
chmod(back[i].url_sav, HTS_ACCESS_FILE);
#endif
/* create a temporary reference file in case of broken mirror */
if (back[i].r.out != NULL) {
if (back_serialize_ref(opt, &back[i]) != 0) {
if (opt->log != NULL) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log, "Could not create temporary reference file for %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
}
}
}
} else { // on coupe tout!
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File cancelled (non HTML): %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
if (!back[i].testmode)
back[i].r.statuscode=STATUSCODE_INVALID; // EUHH CANCEL
else
back[i].r.statuscode=STATUSCODE_TEST_OK; // "TEST OK"
if (back[i].r.soc!=INVALID_SOCKET) {
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(3): deletehttp\n");
#endif
deletehttp(&back[i].r);
}
back[i].r.soc=INVALID_SOCKET;
}
}
}
}
}
}
}
}
}
#endif
// réception de données depuis socket ou fichier
if (back[i].status) {
if (back[i].status==STATUS_WAIT_HEADERS) // recevoir par bloc de lignes
retour_fread=http_xfread1(&(back[i].r),0);
else if (back[i].status==STATUS_CHUNK_WAIT || back[i].status==STATUS_CHUNK_CR) { // recevoir longueur chunk en hexa caractère par caractère
// backuper pour lire dans le buffer chunk
htsblk r;
memcpy(&r, &(back[i].r), sizeof(htsblk));
back[i].r.is_write=0; // mémoire
back[i].r.adr=back[i].chunk_adr; // adresse
back[i].r.size=back[i].chunk_size; // taille taille chunk
back[i].r.totalsize=-1; // total inconnu
back[i].r.out=NULL;
back[i].r.is_file=0;
//
// ligne par ligne
retour_fread=http_xfread1(&(back[i].r),-1);
// modifier et restaurer
back[i].chunk_adr=back[i].r.adr; // adresse
back[i].chunk_size=back[i].r.size; // taille taille chunk
memcpy(&(back[i].r), &r, sizeof(htsblk)); // restaurer véritable r
}
else if (back[i].is_chunk) { // attention chunk, limiter taille à lire
#if CHUNKDEBUG==1
printf("[%d] read %d bytes\n",(int)back[i].r.soc,(int)min(back[i].r.totalsize-back[i].r.size,max_read_bytes));
#endif
retour_fread=(int) http_xfread1(&(back[i].r),(int) min(back[i].r.totalsize-back[i].r.size,max_read_bytes));
} else
retour_fread=(int) http_xfread1(&(back[i].r),(int) max_read_bytes);
// retour_fread=http_fread1(&(back[i].r));
} else
retour_fread=READ_EOF; // interruption ou annulation interne (peut ne pas être une erreur)
// Si réception chunk, tester si on est pas à la fin!
if (back[i].status==1) {
if (back[i].is_chunk) { // attendre prochain chunk
if (back[i].r.size==back[i].r.totalsize) { // fin chunk!
//printf("chunk end at %d\n",back[i].r.size);
back[i].status=STATUS_CHUNK_CR; /* fetch ending CRLF */
if (back[i].chunk_adr!=NULL) {
freet(back[i].chunk_adr);
back[i].chunk_adr=NULL;
}
back[i].chunk_size=0;
retour_fread=0; // pas d'erreur
#if CHUNKDEBUG==1
printf("[%d] waiting for current chunk CRLF..\n",(int)back[i].r.soc);
#endif
}
} else if (back[i].r.keep_alive) {
if (back[i].r.size==back[i].r.totalsize) { // fin!
retour_fread=READ_EOF; // end
}
}
}
if (retour_fread < 0) { // fin réception
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
/*KA back[i].r.soc=INVALID_SOCKET; */
#if CHUNKDEBUG==1
if (back[i].is_chunk)
printf("[%d] must be the last chunk for %s (connection closed) - %d/%d\n",(int)back[i].r.soc,back[i].url_fil,back[i].r.size,back[i].r.totalsize);
#endif
if (retour_fread < 0 && retour_fread != READ_EOF) {
if (back[i].r.size > 0)
strcpybuff(back[i].r.msg, "Interrupted transfer");
else
strcpybuff(back[i].r.msg, "No data (connection closed)");
back[i].r.statuscode=STATUSCODE_CONNERROR;
} else if ((back[i].r.statuscode <= 0) && (strnotempty(back[i].r.msg)==0)) {
#if HDEBUG
printf("error interruped: %s\n",back[i].r.adr);
#endif
if (back[i].r.size>0)
strcpybuff(back[i].r.msg,"Interrupted transfer");
else
strcpybuff(back[i].r.msg,"No data (connection closed)");
back[i].r.statuscode=STATUSCODE_CONNERROR;
}
// Close socket
if (back[i].r.soc!=INVALID_SOCKET) {
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(4): deletehttp\n");
#endif
/*KA deletehttp(&back[i].r);*/
back_maydeletehttp(opt, cache, sback, i);
}
// finalize transfer
if (back[i].r.statuscode>0
&& !IS_DELAYED_EXT(back[i].url_sav)
) {
back_finalize(opt,cache,sback,i);
}
if (back[i].r.totalsize>0) { // tester totalsize
//if ((back[i].r.totalsize>0) && (back[i].status==STATUS_WAIT_HEADERS)) { // tester totalsize
if (back[i].r.totalsize!=back[i].r.size) { // pas la même!
if (!opt->tolerant) {
//#if HTS_CL_IS_FATAL
deleteaddr(&back[i].r);
if (back[i].r.size<back[i].r.totalsize)
back[i].r.statuscode=STATUSCODE_CONNERROR; // recatch
sprintf(back[i].r.msg,"Incorrect length ("LLintP" Bytes, "LLintP" expected)",(LLint)back[i].r.size,(LLint)back[i].r.totalsize);
} else {
//#else
// Un warning suffira..
if (cache->log!=NULL) {
fspc(opt,cache->log,"warning"); fprintf(cache->log,"Incorrect length ("LLintP"!="LLintP" expected) for %s%s"LF,(LLint)back[i].r.size,(LLint)back[i].r.totalsize,back[i].url_adr,back[i].url_fil);
}
//#endif
}
}
}
#if BDEBUG==1
printf("transfer ok\n");
#endif
} else if (retour_fread > 0) { // pas d'erreur de réception et data
if (back[i].timeout>0) { // refresh timeout si besoin est
back[i].timeout_refresh=time_local();
}
// Traitement des en têtes chunks ou en têtes
if (back[i].status==STATUS_CHUNK_WAIT || back[i].status==STATUS_CHUNK_CR) { // réception taille chunk en hexa ( après les en têtes, peut ne pas
if (back[i].chunk_size > 0 && back[i].chunk_adr[back[i].chunk_size-1]==10) {
int chunk_size=-1;
char chunk_data[64];
if (back[i].chunk_size<32) { // pas trop gros
char* chstrip=back[i].chunk_adr;
back[i].chunk_adr[ back[i].chunk_size-1]='\0'; // octet nul
// skip leading spaces or cr
while(isspace(*chstrip)) chstrip++;
chunk_data[0] = '\0';
strncatbuff(chunk_data, chstrip, sizeof(chunk_data) - 2);
// strip chunk-extension
while( (chstrip = strchr(chunk_data, ';'))) *chstrip='\0';
while( (chstrip = strchr(chunk_data, ' '))) *chstrip='\0';
while( (chstrip = strchr(chunk_data, '\r'))) *chstrip='\0';
#if CHUNKDEBUG==1
printf("[%d] chunk received and read: %s\n",(int)back[i].r.soc,chunk_data);
#endif
if (back[i].r.totalsize<0)
back[i].r.totalsize=0; // initialiser à 0
if (back[i].status==STATUS_CHUNK_WAIT) { // "real" chunk
if (sscanf(chunk_data,"%x",&chunk_size) == 1) {
if (chunk_size > 0)
back[i].chunk_blocksize = chunk_size; /* the data block chunk size */
else
back[i].chunk_blocksize = -1; /* ending */
back[i].r.totalsize+=chunk_size; // noter taille
if (back[i].r.adr != NULL || !back[i].r.is_write) { // Not to disk
back[i].r.adr=(char*) realloct(back[i].r.adr, (size_t)back[i].r.totalsize + 1);
if (!back[i].r.adr) {
if (cache->log!=NULL) {
fprintf(cache->log,"Error: Not enough memory ("LLintP") for %s%s"LF,(LLint)back[i].r.totalsize,back[i].url_adr,back[i].url_fil);
}
}
}
#if CHUNKDEBUG==1
printf("[%d] chunk length: %d - next total "LLintP":\n",(int)back[i].r.soc,(int)chunk_size,(LLint)back[i].r.totalsize);
#endif
} else {
if (cache->log!=NULL) {
fprintf(cache->log,"Warning: Illegal chunk (%s) for %s%s"LF,back[i].chunk_adr,back[i].url_adr,back[i].url_fil);
}
}
} else { /* back[i].status==STATUS_CHUNK_CR : just receiving ending CRLF after data */
if (chunk_data[0] == '\0') {
if (back[i].chunk_blocksize > 0)
chunk_size=(int)back[i].chunk_blocksize; /* recent data chunk size */
else if (back[i].chunk_blocksize == -1)
chunk_size=0; /* ending chunk */
else
chunk_size=1; /* fake positive size for 1st chunk history */
#if CHUNKDEBUG==1
printf("[%d] chunk CRLF seen\n", (int)back[i].r.soc);
#endif
} else {
if (cache->log!=NULL) {
fprintf(cache->log,"Warning: Illegal chunk CRLF (%s) for %s%s"LF,back[i].chunk_adr,back[i].url_adr,back[i].url_fil);
}
#if CHUNKDEBUG==1
printf("[%d] chunk CRLF ERROR!! : '%s'\n", (int)back[i].r.soc, chunk_data);
#endif
}
}
} else {
if (cache->log!=NULL) {
fprintf(cache->log,"Warning: Chunk too big ("LLintP") for %s%s"LF,(LLint)back[i].chunk_size,back[i].url_adr,back[i].url_fil);
}
}
// ok, continuer sur le body
// si chunk non nul continuer (ou commencer)
if (back[i].status==STATUS_CHUNK_CR && chunk_size > 0) {
back[i].status = STATUS_CHUNK_WAIT; /* waiting for next chunk (NN\r\n<data>\r\nNN\r\n<data>..\r\n0\r\n\r\n) */
#if CHUNKDEBUG==1
printf("[%d] waiting for next chunk\n", (int)back[i].r.soc);
#endif
} else if (back[i].status==STATUS_CHUNK_WAIT && chunk_size == 0) { /* final chunk */
back[i].status=STATUS_CHUNK_CR; /* final CRLF */
#if CHUNKDEBUG==1
printf("[%d] waiting for final CRLF (chunk)\n", (int)back[i].r.soc);
#endif
} else if (back[i].status==STATUS_CHUNK_WAIT && chunk_size >= 0) { /* will fetch data now */
back[i].status=1; // continuer body
#if CHUNKDEBUG==1
printf("[%d] waiting for body (chunk)\n", (int)back[i].r.soc);
#endif
} else { /* zero-size-chunk-CRLF (end) or error */
#if CHUNKDEBUG==1
printf("[%d] chunk end, total: %d\n",(int)back[i].r.soc,back[i].r.size);
#endif
/* End */
//if (back[i].status==STATUS_CHUNK_CR) {
back[i].status=STATUS_READY; // fin
back_set_finished(sback, i);
//}
// finalize transfer if not temporary
if (!IS_DELAYED_EXT(back[i].url_sav)) {
back_finalize(opt,cache,sback,i);
} else {
if (back[i].r.statuscode == HTTP_OK) {
if (cache->log!=NULL) {
fspc(opt,cache->log,"warning"); fprintf(cache->log,"Unexpected incomplete type with 200 code at %s%s"LF, back[i].url_adr, back[i].url_fil);
}
}
}
if (back[i].r.soc!=INVALID_SOCKET) {
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(5): deletehttp\n");
#endif
/* Error */
if (chunk_size < 0) {
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
deleteaddr(&back[i].r);
back[i].r.statuscode=STATUSCODE_INVALID;
strcpybuff(back[i].r.msg,"Invalid chunk");
#if CHUNKDEBUG==1
printf("[%d] chunk error\n", (int)back[i].r.soc);
#endif
} else /* if chunk_size == 0 */ {
#if CHUNKDEBUG==1
printf("[%d] all chunks now received\n", (int)back[i].r.soc);
#endif
/* Tester totalsize en fin de chunk */
if ((back[i].r.totalsize>0)) { // tester totalsize
if (back[i].r.totalsize!=back[i].r.size) { // pas la même!
if (!opt->tolerant) {
deleteaddr(&back[i].r);
back[i].r.statuscode=STATUSCODE_INVALID;
strcpybuff(back[i].r.msg,"Incorrect length");
} else {
// Un warning suffira..
if (cache->log!=NULL) {
fspc(opt,cache->log,"warning"); fprintf(cache->log,"Incorrect length ("LLintP"!="LLintP" expected) for %s%s"LF,(LLint)back[i].r.size,(LLint)back[i].r.totalsize,back[i].url_adr,back[i].url_fil);
}
}
}
}
/* Oops, trailers! */
if (back[i].r.keep_alive_trailers) {
/* fixme (not yet supported) */
}
}
}
}
// effacer buffer (chunk en tete)
if (back[i].chunk_adr!=NULL) {
freet(back[i].chunk_adr);
back[i].chunk_adr=NULL;
back[i].chunk_size=0;
// NO! xxback[i].chunk_blocksize = 0;
}
} // taille buffer chunk > 1 && LF
//
} else if (back[i].status==STATUS_WAIT_HEADERS) { // en têtes (avant le chunk si il est présent)
//
if (back[i].r.size>=2) {
// double LF
if (
((back[i].r.adr[back[i].r.size-1]==10) && (back[i].r.adr[back[i].r.size-2]==10))
||
(back[i].r.adr[0] == '<') /* bogus server */
) {
char rcvd[2048];
int ptr=0;
int noFreebuff=0;
#if BDEBUG==1
printf("..ok, header received\n");
#endif
/* Hack for zero-length headers */
if (back[i].status != 0 && back[i].r.adr[0] != '<') {
// ----------------------------------------
// traiter en-tête!
// status-line à récupérer
ptr+=binput(back[i].r.adr+ptr,rcvd,2000);
if (strnotempty(rcvd)==0) {
/* Bogus CRLF, OR recycled connection and trailing chunk CRLF */
ptr+=binput(back[i].r.adr+ptr,rcvd,2000);
}
// traiter status-line
treatfirstline(&back[i].r,rcvd);
#if HDEBUG
printf("(Buffer) Status-Code=%d\n",back[i].r.statuscode);
#endif
if (_DEBUG_HEAD) {
if (ioinfo) {
fprintf(ioinfo,"[%d] response for %s%s:\r\ncode=%d\r\n",
back[i].r.debugid, jump_identification(back[i].url_adr),back[i].url_fil,back[i].r.statuscode);
fprintfio(ioinfo,back[i].r.adr,">>> ");
fprintf(ioinfo,"\r\n");
fflush(ioinfo);
} // en-tête
}
// header // ** !attention! HTTP/0.9 non supporté
do {
ptr+=binput(back[i].r.adr+ptr,rcvd,2000);
#if HDEBUG
printf("(buffer)>%s\n",rcvd);
#endif
/*
if (_DEBUG_HEAD) {
if (ioinfo) {
fprintf(ioinfo,"(buffer)>%s\r\n",rcvd);
fflush(ioinfo);
}
}
*/
if (strnotempty(rcvd))
treathead(opt->cookie,back[i].url_adr,back[i].url_fil,&back[i].r,rcvd); // traiter
// parfois les serveurs buggés renvoient un content-range avec un 200
if (back[i].r.statuscode==HTTP_OK) // 'OK'
if (strfield(rcvd, "content-range:")) { // Avec un content-range: relisez les RFC..
// Fake range (the file is complete)
if (!(back[i].r.crange_start == 0 && back[i].r.crange_end == back[i].r.crange - 1)) {
back[i].r.statuscode=HTTP_PARTIAL_CONTENT; // FORCER A 206 !!!!!
}
}
} while(strnotempty(rcvd));
// ----------------------------------------
} else {
// assume text/html, OK
treatfirstline(&back[i].r, back[i].r.adr);
noFreebuff=1;
}
// Callback
{
int test_head = RUN_CALLBACK6(opt, receivehead,
back[i].r.adr, back[i].url_adr, back[i].url_fil, back[i].referer_adr, back[i].referer_fil, &back[i].r);
if (test_head!=1) {
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"External wrapper aborted transfer, breaking connection: %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
back[i].status=STATUS_READY; // FINI
back_set_finished(sback, i);
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
strcpybuff(back[i].r.msg,"External wrapper aborted transfer");
back[i].r.statuscode = STATUSCODE_INVALID;
}
}
// Free headers memory now
// Actually, save them for informational purpose
if (!noFreebuff) {
char* block = back[i].r.adr;
back[i].r.adr = NULL;
deleteaddr(&back[i].r);
back[i].r.headers = block;
}
/*
Status code and header-response hacks
*/
// Check response : 203 == 200
if (back[i].r.statuscode==HTTP_NON_AUTHORITATIVE_INFORMATION) {
back[i].r.statuscode=HTTP_OK; // forcer "OK"
} else if (back[i].r.statuscode == HTTP_CONTINUE) {
back[i].status=STATUS_WAIT_HEADERS;
back[i].r.size=0;
back[i].r.totalsize=0;
back[i].chunk_size=0;
back[i].r.statuscode=STATUSCODE_INVALID;
back[i].r.msg[0]='\0';
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"Status 100 detected for %s%s, continuing headers"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
continue;
}
/*
Solve "false" 416 problems
*/
if (back[i].r.statuscode==HTTP_REQUESTED_RANGE_NOT_SATISFIABLE) { // 'Requested Range Not Satisfiable'
// Example:
// Range: bytes=2830-
// ->
// Content-Range: bytes */2830
if (back[i].range_req_size == back[i].r.crange) {
filenote(&opt->state.strc,back[i].url_sav,NULL);
file_notify(opt,back[i].url_adr, back[i].url_fil, back[i].url_sav, 0, 0, back[i].r.notmodified);
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
back[i].status=STATUS_READY; // READY
back_set_finished(sback, i);
back[i].r.size=back[i].r.totalsize=back[i].range_req_size;
back[i].r.statuscode=HTTP_NOT_MODIFIED; // NOT MODIFIED
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File seems complete (good 416 message), breaking connection: %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
}
}
// transform 406 into 200 ; we'll catch embedded links inside the choice page
if (back[i].r.statuscode==406) { // 'Not Acceptable'
back[i].r.statuscode=HTTP_OK;
}
// 'do not erase already downloaded file'
// on an updated file
// with an error : consider a 304 error
if (!opt->delete_old) {
if (HTTP_IS_ERROR(back[i].r.statuscode) && back[i].is_update && !back[i].testmode) {
if (back[i].url_sav[0] && fexist_utf8(back[i].url_sav)) {
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"Error ignored %d (%s) because of 'no purge' option for %s%s"LF,back[i].r.statuscode,back[i].r.msg,back[i].url_adr,back[i].url_fil); test_flush;
}
back[i].r.statuscode = HTTP_NOT_MODIFIED;
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
}
}
}
// Various hacks to limit re-transfers when updating a mirror
// Force update if same size detected
if (opt->sizehack) {
// We already have the file
// and ask the remote server for an update
// Some servers, especially dynamic pages severs, always
// answer that the page has been modified since last visit
// And answer with a 200 (OK) response, and the same page
// If the size is the same, and the option has been set, we assume
// that the file is identical - and therefore let's break the connection
if (back[i].is_update) { // mise à jour
if (back[i].r.statuscode==HTTP_OK && !back[i].testmode) { // 'OK'
htsblk r = cache_read(opt,cache,back[i].url_adr,back[i].url_fil,NULL,NULL); // lire entrée cache
if (r.statuscode == HTTP_OK) { // OK pas d'erreur cache
LLint len1,len2;
len1=r.totalsize;
len2=back[i].r.totalsize;
if (r.size>0)
len1=r.size;
if (len1>0) {
if (len1 == len2) { // tailles identiques
back[i].r.statuscode=HTTP_NOT_MODIFIED; // forcer NOT MODIFIED
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File seems complete (same size), breaking connection: %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
}
}
} else {
if (opt->log!=NULL) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log,"File seems complete (same size), but there was a cache read error (%u): %s%s"LF, r.statuscode, back[i].url_adr, back[i].url_fil); test_flush;
}
}
if (r.adr) {
freet(r.adr);
r.adr = NULL;
}
}
}
}
// Various hacks to limit re-transfers when updating a mirror
// Detect already downloaded file (with another browser, for example)
if (opt->sizehack) {
if (!back[i].is_update) { // mise à jour
if (back[i].r.statuscode==HTTP_OK && !back[i].testmode) { // 'OK'
if (!is_hypertext_mime(opt,back[i].r.contenttype, back[i].url_fil)) { // not HTML
if (strnotempty(back[i].url_sav)) { // target found
int size = fsize_utf8(back[i].url_sav); // target size
if (size >= 0) {
if (back[i].r.totalsize == size) { // same size!
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
back[i].status=STATUS_READY; // READY
back_set_finished(sback, i);
back[i].r.size=back[i].r.totalsize;
filenote(&opt->state.strc,back[i].url_sav,NULL);
file_notify(opt,back[i].url_adr, back[i].url_fil, back[i].url_sav, 0, 0, back[i].r.notmodified);
back[i].r.statuscode=HTTP_NOT_MODIFIED; // NOT MODIFIED
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File seems complete (same size file discovered), breaking connection: %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
}
}
}
}
}
}
}
// Various hacks to limit re-transfers when updating a mirror
// Detect bad range: header
if (opt->sizehack) {
// We have request for a partial file (with a 'Range: NNN-' header)
// and received a complete file notification (200), with 'Content-length: NNN'
// it might be possible that we had the complete file
// this is the case in *most* cases, so break the connection
if (back[i].r.is_write==0) { // mode mémoire
if (back[i].r.adr==NULL) { // rien n'a été écrit
if (!back[i].testmode) { // pas mode test
if (strnotempty(back[i].url_sav)) {
if (strcmp(back[i].url_fil,"/robots.txt")) {
if (back[i].r.statuscode==HTTP_OK) { // 'OK'
if (!is_hypertext_mime(opt,back[i].r.contenttype, back[i].url_fil)) { // pas HTML
if (back[i].r.statuscode==HTTP_OK) { // "OK"
if (back[i].range_req_size>0) { // but Range: requested
if (back[i].range_req_size == back[i].r.totalsize) { // And same size
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(skip_range): deletehttp\n");
#endif
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
back[i].status=STATUS_READY; // READY
back_set_finished(sback, i);
back[i].r.size=back[i].r.totalsize;
filenote(&opt->state.strc,back[i].url_sav,NULL);
file_notify(opt,back[i].url_adr, back[i].url_fil, back[i].url_sav, 0, 0, back[i].r.notmodified);
back[i].r.statuscode=HTTP_NOT_MODIFIED; // NOT MODIFIED
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File seems complete (reget failed), breaking connection: %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
}
}
}
}
}
}
}
}
}
}
}
// END - Various hacks to limit re-transfers when updating a mirror
/*
End of status code and header-response hacks
*/
/* Interdiction taille par le wizard? */
if (back[i].r.soc!=INVALID_SOCKET) {
if (!back_checksize(opt,&back[i],1)) {
back[i].status=STATUS_READY; // FINI
back_set_finished(sback, i);
back[i].r.statuscode=STATUSCODE_TOO_BIG;
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
if (!back[i].testmode)
strcpybuff(back[i].r.msg,"File too big");
else
strcpybuff(back[i].r.msg,"Test: File too big");
}
}
/* sinon, continuer */
/* if (back[i].r.soc!=INVALID_SOCKET) { // ok récupérer body? */
// head: terminé
if (back[i].head_request) {
if ((opt->debug>1) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"Tested file: %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(head request): deletehttp\n");
#endif
// Couper connexion
if (!back[i].http11) { /* NO KA */
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
}
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
}
// traiter une éventuelle erreur 304 (cache à jour utilisable)
else if (back[i].r.statuscode==HTTP_NOT_MODIFIED) { // document à jour dans le cache
// lire dans le cache
// ** NOTE: pas de vérif de la taille ici!!
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(file is not modified): deletehttp\n");
#endif
/* clear everything but connection: switch, close, and reswitch */
{
htsblk tmp;
memset(&tmp, 0, sizeof(tmp));
back_connxfr(&back[i].r, &tmp);
back[i].r=cache_read(opt,cache,back[i].url_adr,back[i].url_fil,back[i].url_sav,back[i].location_buffer);
back[i].r.location=back[i].location_buffer;
back_connxfr(&tmp,&back[i].r);
}
// hack:
// In case of 'if-unmodified-since' hack, a 304 status can be sent
// then, force 'ok' status
if (back[i].r.statuscode == STATUSCODE_INVALID) {
if (fexist_utf8(back[i].url_sav)) {
back[i].r.statuscode=HTTP_OK; // OK
strcpybuff(back[i].r.msg, "OK (cached)");
back[i].r.is_file=1;
back[i].r.totalsize = back[i].r.size = fsize_utf8(back[i].url_sav);
get_httptype(opt,back[i].r.contenttype, back[i].url_sav, 1);
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"Not-modified status without cache guessed: %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
}
}
// Status is okay?
if (back[i].r.statuscode!=-1) { // pas d'erreur de lecture
back[i].status=STATUS_READY; // OK prêt
back_set_finished(sback, i);
back[i].r.notmodified=1; // NON modifié!
if ((opt->debug>0) && (opt->log!=NULL)) {
HTS_LOG(opt,LOG_DEBUG); fprintf(opt->log,"File loaded after test from cache: %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
// finalize
//file_notify(back[i].url_adr, back[i].url_fil, back[i].url_sav, 0, 0, back[i].r.notmodified); // not modified
if (back[i].r.statuscode>0) {
back_finalize(opt,cache,sback,i);
}
#if DEBUGCA
printf("..document à jour après requète: %s%s\n",back[i].url_adr,back[i].url_fil);
#endif
//printf(">%s status %d\n",back[p].r.contenttype,back[p].r.statuscode);
} else { // erreur
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
//printf("erreur cache\n");
}
/********** NO - must complete the body! ********** */
#if 0
} else if (HTTP_IS_REDIRECT(back[i].r.statuscode)
|| (back[i].r.statuscode==412)
|| (back[i].r.statuscode==416)
) { // Ne pas prendre le html, erreurs connues et gérées
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(301,302,303,307,412,416..): deletehttp\n");
#endif
// Couper connexion
/*KA deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;*/
back_maydeletehttp(opt, cache, sback, i);
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
// finalize
if (back[i].r.statuscode>0) {
back_finalize(opt,cache,sback,i);
}
#endif
/********** **************************** ********** */
} else { // il faut aller le chercher
// effacer buffer (requète)
if (!noFreebuff) {
deleteaddr(&back[i].r);
back[i].r.size=0;
}
// traiter 206 (partial content)
// xxc SI CHUNK VERIFIER QUE CA MARCHE??
if (back[i].r.statuscode==206) { // on nous envoie un morceau (la fin) coz une partie sur disque!
off_t sz=fsize_utf8(back[i].url_sav);
#if HDEBUG
printf("partial content: "LLintP" on disk..\n",(LLint)sz);
#endif
if (sz>=0) {
if (!is_hypertext_mime(opt,back[i].r.contenttype, back[i].url_sav)) { // pas HTML
if (opt->getmode&2) { // on peut ecrire des non html **sinon ben euhh sera intercepté plus loin, donc rap sur ce qui va sortir**
filenote(&opt->state.strc,back[i].url_sav,NULL); // noter fichier comme connu
file_notify(opt,back[i].url_adr, back[i].url_fil, back[i].url_sav, 0, 1, back[i].r.notmodified);
back[i].r.out=FOPEN(fconv(catbuff,back[i].url_sav),"ab"); // append
if (back[i].r.out) {
back[i].r.is_write=1; // écrire
back[i].r.size=sz; // déja écrit
back[i].r.statuscode=HTTP_OK; // Forcer 'OK'
if (back[i].r.totalsize>0)
back[i].r.totalsize+=sz; // plus en fait
fseek(back[i].r.out,0,SEEK_END); // à la fin
/* create a temporary reference file in case of broken mirror */
if (back_serialize_ref(opt, &back[i]) != 0) {
if (opt->log != NULL) {
HTS_LOG(opt,LOG_WARNING); fprintf(opt->log, "Could not create temporary reference file for %s%s"LF,back[i].url_adr,back[i].url_fil); test_flush;
}
}
#if HDEBUG
printf("continue interrupted file\n");
#endif
} else { // On est dans la m**
back[i].status=STATUS_READY; // terminé (voir plus loin)
back_set_finished(sback, i);
strcpybuff(back[i].r.msg,"Can not open partial file");
}
}
} else { // mémoire
FILE* fp=FOPEN(fconv(catbuff,back[i].url_sav),"rb");
if (fp) {
LLint alloc_mem=sz + 1;
if (back[i].r.totalsize>0)
alloc_mem+=back[i].r.totalsize; // AJOUTER RESTANT!
if ( deleteaddr(&back[i].r) && (back[i].r.adr=(char*) malloct((size_t)alloc_mem)) ) {
back[i].r.size=sz;
if (back[i].r.totalsize>0)
back[i].r.totalsize+=sz; // plus en fait
if (( fread(back[i].r.adr,1,sz,fp)) != sz) {
back[i].status=STATUS_READY; // terminé (voir plus loin)
back_set_finished(sback, i);
strcpybuff(back[i].r.msg,"Can not read partial file");
} else {
back[i].r.statuscode=HTTP_OK; // Forcer 'OK'
#if HDEBUG
printf("continue in mem interrupted file\n");
#endif
}
} else {
back[i].status=STATUS_READY; // terminé (voir plus loin)
back_set_finished(sback, i);
strcpybuff(back[i].r.msg,"No memory for partial file");
}
fclose(fp);
} else { // Argh..
back[i].status=STATUS_READY; // terminé (voir plus loin)
back_set_finished(sback, i);
strcpybuff(back[i].r.msg,"Can not open partial file");
}
}
} else { // Non trouvé??
back[i].status=STATUS_READY; // terminé (voir plus loin)
back_set_finished(sback, i);
strcpybuff(back[i].r.msg,"Can not find partial file");
}
// Erreur?
if (back[i].status==STATUS_READY) {
if (back[i].r.soc!=INVALID_SOCKET) {
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(206 solve problems): deletehttp\n");
#endif
deletehttp(&back[i].r);
}
back[i].r.soc=INVALID_SOCKET;
//back[i].r.statuscode=206; ????????
back[i].r.statuscode=STATUSCODE_NON_FATAL;
if (strnotempty(back[i].r.msg))
strcpybuff(back[i].r.msg,"Error attempting to solve status 206 (partial file)");
}
}
if (back[i].status!=0) { // non terminé (erreur)
if (!back[i].testmode) { // fichier normal
if (back[i].r.empty /* ?? && back[i].r.statuscode==HTTP_OK */) { // empty response
// Couper connexion
back_maydeletehttp(opt, cache, sback, i);
/* KA deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET; */
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
if ( deleteaddr(&back[i].r) && (back[i].r.adr=(char*) malloct( 2)) ) {
back[i].r.adr[0] = 0;
}
back_finalize(opt,cache,sback,i);
}
else if (!back[i].r.is_chunk) { // pas de chunk
//if (back[i].r.http11!=2) { // pas de chunk
back[i].is_chunk=0;
back[i].status=1; // start body
} else {
#if CHUNKDEBUG==1
printf("[%d] chunk encoding detected %s..\n",(int)back[i].r.soc, back[i].url_fil);
#endif
back[i].is_chunk=1;
back[i].chunk_adr=NULL;
back[i].chunk_size=0;
back[i].chunk_blocksize=0;
back[i].status=STATUS_CHUNK_WAIT; // start body wait chunk
back[i].r.totalsize=0; /* devalidate size! (rfc) */
}
if (back[i].rateout>0) {
back[i].rateout_time=time_local(); // refresh pour transfer rate
}
#if HDEBUG
printf("(buffer) start body!\n");
#endif
} else { // mode test, ne pas passer en 1!!
back[i].status=STATUS_READY; // READY
back_set_finished(sback, i);
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(test ok): deletehttp\n");
#endif
deletehttp(&back[i].r); back[i].r.soc=INVALID_SOCKET;
if (back[i].r.statuscode==HTTP_OK) {
strcpybuff(back[i].r.msg,"Test: OK");
back[i].r.statuscode=STATUSCODE_TEST_OK; // test réussi
}
else { // test a échoué, on ne change rien sauf que l'erreur est à titre indicatif
char tempo[1000];
strcpybuff(tempo,back[i].r.msg);
strcpybuff(back[i].r.msg,"Test: ");
strcatbuff(back[i].r.msg,tempo);
}
}
}
}
/*}*/
} // si LF
} // r.size>2
} // si == 99
} // si pas d'erreurs
#if BDEBUG==1
printf("bytes overall: %d\n",back[i].r.size);
#endif
} // données dispo
// en cas d'erreur cl, supprimer éventuel fichier sur disque
#if HTS_REMOVE_BAD_FILES
if (back[i].status<0) {
if (!back[i].testmode) { // pas en test
UNLINK(back[i].url_sav); // éliminer fichier (endommagé)
//printf("&& %s\n",back[i].url_sav);
}
}
#endif
/* funny log for commandline users */
//if (!opt->quiet) {
// petite animation
if (opt->verbosedisplay==1) {
if (back[i].status==STATUS_READY) {
if (back[i].r.statuscode==HTTP_OK)
printf("* %s%s ("LLintP" bytes) - OK"VT_CLREOL"\r",back[i].url_adr,back[i].url_fil,(LLint)back[i].r.size);
else
printf("* %s%s ("LLintP" bytes) - %d"VT_CLREOL"\r",back[i].url_adr,back[i].url_fil,(LLint)back[i].r.size,back[i].r.statuscode);
fflush(stdout);
}
}
//}
} // status>0
} // for
// vérifier timeouts
if (gestion_timeout) {
TStamp act;
act=time_local(); // temps en secondes
for(i_mod = 0 ; i_mod < (unsigned int) back_max ; i_mod++) {
// for(i=0;i<back_max;i++) {
unsigned int i = ( i_mod + mod_random ) % ( back_max );
if (back[i].status>0) { // réception/connexion/..
if (back[i].timeout>0) {
//printf("time check %d\n",((int) (act-back[i].timeout_refresh))-back[i].timeout);
if (((int) (act-back[i].timeout_refresh))>=back[i].timeout) {
if (back[i].r.soc!=INVALID_SOCKET) {
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(timeout): deletehttp\n");
#endif
deletehttp(&back[i].r);
}
back[i].r.soc=INVALID_SOCKET;
back[i].r.statuscode=STATUSCODE_TIMEOUT;
if (back[i].status==STATUS_CONNECTING)
strcpybuff(back[i].r.msg,"Connect Time Out");
else if (back[i].status==STATUS_WAIT_DNS)
strcpybuff(back[i].r.msg,"DNS Time Out");
else
strcpybuff(back[i].r.msg,"Receive Time Out");
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
} else if ((back[i].rateout>0) && (back[i].status<99)) {
if (((int) (act-back[i].rateout_time))>=HTS_WATCHRATE) { // checker au bout de 15s
if ( (int) ((back[i].r.size)/(act-back[i].rateout_time)) < back[i].rateout ) { // trop lent
back[i].status=STATUS_READY; // terminé
back_set_finished(sback, i);
if (back[i].r.soc!=INVALID_SOCKET) {
#if HTS_DEBUG_CLOSESOCK
DEBUG_W("back_wait(rateout): deletehttp\n");
#endif
deletehttp(&back[i].r);
}
back[i].r.soc=INVALID_SOCKET;
back[i].r.statuscode=STATUSCODE_SLOW;
strcpybuff(back[i].r.msg,"Transfer Rate Too Low");
}
}
}
}
}
}
}
max_loop--;
max_loop_chk++;
} while((busy_state) && (busy_recv) && (max_loop>0));
if ((!busy_recv) && (!busy_state)) {
if (max_loop_chk>=1) {
Sleep(10); // un tite pause pour éviter les lag..
}
}
}
int back_checksize(httrackp* opt,lien_back* eback,int check_only_totalsize) {
LLint size_to_test;
if (check_only_totalsize)
size_to_test=eback->r.totalsize;
else
size_to_test=max(eback->r.totalsize,eback->r.size);
if (size_to_test>=0) {
/* Interdiction taille par le wizard? */
if (hts_testlinksize(opt,eback->url_adr,eback->url_fil,eback->r.totalsize/1024)==-1) {
return 0; /* interdit */
}
/* vérifier taille classique (heml et non html) */
if ((istoobig(opt,size_to_test,eback->maxfile_html,eback->maxfile_nonhtml,eback->r.contenttype))) {
return 0; /* interdit */
}
}
return 1;
}
int back_checkmirror(httrackp* opt) {
// Check max size
if ((opt->maxsite>0) && (HTS_STAT.stat_bytes >= opt->maxsite)) {
if (!opt->state.stop) { /* not yet stopped */
if (opt->log) {
fprintf(opt->log,"More than "LLintP" bytes have been transfered.. giving up"LF,(LLint)opt->maxsite);
test_flush;
}
/* cancel mirror smoothly */
hts_request_stop(opt, 0);
}
return 1; /* don'k break mirror too sharply for size limits, but stop requested */
/*return 0;
*/
}
// Check max time
if ((opt->maxtime>0) && ((time_local()-HTS_STAT.stat_timestart)>opt->maxtime)) {
if (!opt->state.stop) { /* not yet stopped */
if (opt->log) {
fprintf(opt->log,"More than %d seconds passed.. giving up"LF,opt->maxtime);
test_flush;
}
/* cancel mirror smoothly */
hts_request_stop(opt, 0);
}
}
return 1; /* Ok, go on */
}
// octets transférés + add
LLint back_transfered(LLint nb,struct_back* sback) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
int i;
// ajouter octets en instance
for(i=0;i<back_max;i++)
if ((back[i].status>0) && (back[i].status<99 || back[i].status>=1000))
nb += back[i].r.size;
// stored (ready) slots
if (sback->ready != NULL) {
#ifndef HTS_NO_BACK_ON_DISK
nb += sback->ready_size_bytes;
#else
struct_inthash_enum e = inthash_enum_new(sback->ready);
inthash_chain* item;
while((item = inthash_enum_next(&e))) {
lien_back* ritem = (lien_back*) item->value.ptr;
if ((ritem->status>0) && (ritem->status<99 || ritem->status>=1000))
nb += ritem->r.size;
}
#endif
}
return nb;
}
// infos backing
// j: 1 afficher sockets 2 afficher autres 3 tout afficher
void back_info(struct_back* sback,int i,int j,FILE* fp) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(i >= 0 && i < back_max);
if (back[i].status>=0) {
char BIGSTK s[HTS_URLMAXSIZE*2+1024];
s[0]='\0';
back_infostr(sback,i,j,s);
strcatbuff(s,LF);
fprintf(fp,"%s",s);
}
}
// infos backing
// j: 1 afficher sockets 2 afficher autres 3 tout afficher
void back_infostr(struct_back* sback,int i,int j,char* s) {
lien_back* const back = sback->lnk;
const int back_max = sback->count;
assertf(i >= 0 && i < back_max);
if (back[i].status>=0) {
int aff=0;
if (j & 1) {
if (back[i].status==STATUS_CONNECTING) {
strcatbuff(s,"CONNECT ");
} else if (back[i].status==STATUS_WAIT_HEADERS) {
strcatbuff(s,"INFOS ");
aff=1;
} else if (back[i].status==STATUS_CHUNK_WAIT || back[i].status==STATUS_CHUNK_CR) {
strcatbuff(s,"INFOSC"); // infos chunk
aff=1;
}
else if (back[i].status>0) {
strcatbuff(s,"RECEIVE ");
aff=1;
}
}
if (j & 2) {
if (back[i].status==STATUS_READY) {
switch (back[i].r.statuscode) {
case 200:
strcatbuff(s,"READY ");
aff=1;
break;
case -1:
strcatbuff(s,"ERROR ");
aff=1;
break;
case -2:
strcatbuff(s,"TIMEOUT ");
aff=1;
break;
case -3:
strcatbuff(s,"TOOSLOW ");
aff=1;
break;
case 400:
strcatbuff(s,"BADREQUEST ");
aff=1;
break;
case 401: case 403:
strcatbuff(s,"FORBIDDEN ");
aff=1;
break;
case 404:
strcatbuff(s,"NOT FOUND ");
aff=1;
break;
case 500:
strcatbuff(s,"SERVERROR ");
aff=1;
break;
default:
{
char s2[256];
sprintf(s2,"ERROR(%d)",back[i].r.statuscode);
strcatbuff(s,s2);
}
aff=1;
}
}
}
if (aff) {
{
char BIGSTK s2[HTS_URLMAXSIZE*2+1024];
sprintf(s2,"\"%s",back[i].url_adr); strcatbuff(s,s2);
if (back[i].url_fil[0]!='/') strcatbuff(s,"/");
sprintf(s2,"%s\" ",back[i].url_fil); strcatbuff(s,s2);
sprintf(s,LLintP" "LLintP" ",(LLint)back[i].r.size,(LLint)back[i].r.totalsize); strcatbuff(s,s2);
}
}
}
}
// -- backing --
#undef test_flush
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