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estwaver.c
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/*************************************************************************************************
* The command line interface of web crawler
* Copyright (C) 2004-2007 Mikio Hirabayashi
* This file is part of Hyper Estraier.
* Hyper Estraier is free software; you can redistribute it and/or modify it under the terms of
* the GNU Lesser General Public License as published by the Free Software Foundation; either
* version 2.1 of the License or any later version. Hyper Estraier 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 Lesser General Public
* License for more details.
* You should have received a copy of the GNU Lesser General Public License along with Hyper
* Estraier; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA.
*************************************************************************************************/
#include "wavermod.h"
#define SLEEPUSEC 100000 /* sleep time in micro seconds */
#define MINPRIOR 0.01 /* minimal priority of non-seed documents */
#define NODERTTNUM 5000 /* number of documents for node rotation */
enum { /* enumeration for crawling modes */
CM_CONTINUE, /* continue */
CM_RESTART, /* restart */
CM_REVISIT, /* revisit */
CM_REVCONT /* revisit and continue */
};
typedef struct { /* type of structure for interaction of a URL */
int thid; /* thread ID number */
WAVER *waver; /* waver handle */
char *url; /* URL */
int depth; /* depth */
int pid; /* ID number of the parent document */
double psim; /* similarity of the parent document */
time_t mdate; /* last-modified date */
} TARGSURL;
/* global variables */
pthread_mutex_t g_mutex = PTHREAD_MUTEX_INITIALIZER; /* global mutex */
int g_thnum = 0; /* number of running threads */
int g_thseq = 0; /* sequence of thread ID */
CBMAP *g_tasks = NULL; /* URLs of running tasks */
const char *g_progname; /* program name */
int g_sigterm = FALSE; /* flag for termination signal */
const char *g_pxhost = NULL; /* host name of the proxy */
int g_pxport = 0; /* host name of the proxy */
int g_timeout = -1; /* timeout in seconds */
int g_inputlang = ESTLANGEN; /* prefered language */
/* function prototypes */
int main(int argc, char **argv);
static void usage(void);
static void setsignals(void);
static void sigtermhandler(int num);
static char *dequeue(WAVER *waver, int *depthp, int *pidp, double *psimp);
static void enqueuelinks(WAVER *waver, const char *base, CBLIST *links, CBMAP *kwords,
int depth, int id, int pid, double psim);
static int runinit(int argc, char **argv);
static int runcrawl(int argc, char **argv);
static int rununittest(int argc, char **argv);
static int runfetch(int argc, char **argv);
static int procinit(const char *rootdir, int opts);
static int proccrawl(const char *rootdir, int mode);
static int procunittest(const char *rootdir);
static int procfetch(const char *url);
static int strtolang(const char *str);
static char *capitalize(const char *str);
static void seedurldocs(WAVER *waver, const char *url, int depth, double bias, CBMAP *ulinks);
static int accessthnum(int inc);
static int puttask(const char *url);
static void outtask(const char *url);
static void *geturldoc(void *args);
static char *urltosavepath(const char *savedir, const char *url);
/* main routine */
int main(int argc, char **argv){
const char *tmp;
int rv;
if((tmp = getenv("ESTDBGFD")) != NULL) dpdbgfd = atoi(tmp);
est_proc_env_reset();
g_progname = argv[0];
g_sigterm = FALSE;
g_tasks = cbmapopenex(MINIBNUM);
cbglobalgc(g_tasks, (void (*)(void *))cbmapclose);
if(!est_init_net_env()){
log_print(LL_ERROR, "could not initialize network environment");
exit(1);
}
atexit(est_free_net_env);
if(argc < 2) usage();
rv = 0;
if(!strcmp(argv[1], "init")){
rv = runinit(argc, argv);
} else if(!strcmp(argv[1], "crawl")){
setsignals();
rv = runcrawl(argc, argv);
} else if(!strcmp(argv[1], "unittest")){
rv = rununittest(argc, argv);
} else if(!strcmp(argv[1], "fetch")){
rv = runfetch(argc, argv);
} else {
usage();
}
return rv;
}
/* print the usage and exit */
static void usage(void){
fprintf(stderr, "%s: command line interface of web crawler\n", g_progname);
fprintf(stderr, "\n");
fprintf(stderr, "usage:\n");
fprintf(stderr, " %s init [-apn|-acc] [-xs|-xl|-xh] [-sv|-si|-sa] rootdir\n", g_progname);
fprintf(stderr, " %s crawl [-restart|-revisit|-revcont] rootdir\n", g_progname);
fprintf(stderr, " %s unittest rootdir\n", g_progname);
fprintf(stderr, " %s fetch [-proxy host port] [-tout num] [-il lang] url\n", g_progname);
fprintf(stderr, "\n");
exit(1);
}
/* set signal handlers */
static void setsignals(void){
est_signal(1, sigtermhandler);
est_signal(2, sigtermhandler);
est_signal(3, sigtermhandler);
est_signal(13, SIG_IGN);
est_signal(14, SIG_IGN);
est_signal(15, sigtermhandler);
g_sigterm = FALSE;
}
/* handler of termination signal */
static void sigtermhandler(int num){
g_sigterm = TRUE;
fprintf(stderr, "%s: the termination signal %d catched\n", g_progname, num);
}
/* dequeue a URL from the priority queue (it has a critical section inside) */
static char *dequeue(WAVER *waver, int *depthp, int *pidp, double *psimp){
char *buf, *rp, *rv;
if(time(NULL) > waver->stime + waver->period) return NULL;
if(pthread_mutex_lock(&g_mutex) != 0){
log_print(LL_ERROR, "could not get mutex");
return NULL;
}
if(waver->curnum > waver->docnum){
pthread_mutex_unlock(&g_mutex);
return NULL;
}
while(queue_rnum(waver->queue) < 1 && g_thnum > 0){
pthread_mutex_unlock(&g_mutex);
est_usleep(SLEEPUSEC);
if(pthread_mutex_lock(&g_mutex) != 0){
log_print(LL_ERROR, "could not get mutex");
return NULL;
}
}
rv = NULL;
*depthp = 0;
*pidp = 0;
*psimp = 0.0;
while(TRUE){
if(!(buf = queue_dequeue(waver->queue))) break;
if((rp = strchr(buf, '\t')) != NULL && (*depthp = atoi(buf)) >= 0){
rp++;
rv = cbmemdup(rp, -1);
if((rp = strchr(buf, ':')) != NULL){
rp++;
*pidp = atoi(rp);
if((rp = strchr(rp, ':')) != NULL){
rp++;
*psimp = strtod(rp, NULL);
}
}
free(buf);
break;
}
free(buf);
}
pthread_mutex_unlock(&g_mutex);
return rv;
}
/* add traced URLs (it should be called in a critical section) */
static void enqueuelinks(WAVER *waver, const char *base, CBLIST *links, CBMAP *kwords,
int depth, int id, int pid, double psim){
PMRULE *pmrule;
CBMAP *pkwords, *ulinks;
const char *vbuf;
char numbuf[NUMBUFSIZ], *ubuf, *pv, *benc, *tenc;
int i, j, vsiz, lnum, llen, slash, vnum, *svec, *tvec, num, allow, linknum;
double similarity, lnumtune, depthtune, masstune, priority, remoteness;
if(depth >= waver->maxdepth) return;
if(!kwords || cbmaprnum(waver->kwords) < 1){
similarity = psim * 0.7;
psim = similarity;
} else {
vnum = waver->seedkeynum;
svec = cbmalloc(vnum * sizeof(int));
tvec = cbmalloc(vnum * sizeof(int));
est_vector_set_seed(waver->kwords, svec, vnum);
est_vector_set_target(waver->kwords, kwords, tvec, vnum);
similarity = est_vector_cosine(svec, tvec, vnum) * 0.9 + 0.1;
similarity = similarity * (1.0 - waver->inherit) + psim * waver->inherit;
psim = similarity;
free(tvec);
free(svec);
if(pid > 0 && (pkwords = est_mtdb_get_keywords(waver->index, pid))){
vnum = waver->savekeynum;
svec = cbmalloc(vnum * sizeof(int));
tvec = cbmalloc(vnum * sizeof(int));
est_vector_set_seed(pkwords, svec, vnum);
est_vector_set_target(pkwords, kwords, tvec, vnum);
similarity *= 1.0 - pow(est_vector_cosine(svec, tvec, vnum), 3.14) * 0.8;
cbmapclose(pkwords);
free(tvec);
free(svec);
}
}
if((pv = strstr(base, "://")) != NULL && (pv = strchr(pv + 3, '/')) != NULL){
vbuf = cbmapget(waver->sites, base, pv - base + 1, NULL);
num = (vbuf ? atoi(vbuf) : 0) + 1;
sprintf(numbuf, "%d", num);
cbmapput(waver->sites, base, pv - base + 1, numbuf, -1, TRUE);
if(cbmaprnum(waver->sites) > (waver->queuesize / 3.0 + 1) * 1.4){
log_print(LL_INFO, "site map sliming: %d", cbmaprnum(waver->sites));
kwords_reduce(waver->sites, waver->queuesize / 3.0 + 1, TRUE);
}
}
ulinks = cbmapopenex(MINIBNUM);
cbmapput(ulinks, base, -1, "", 0, FALSE);
lnum = cblistnum(links) + 4;
lnumtune = pow(lnum, 0.7);
depthtune = pow(depth + 7, 0.8);
for(i = 0, linknum = 0; i < cblistnum(links) && linknum <= waver->maxlinknum; i++){
vbuf = cblistval(links, i, &vsiz);
ubuf = cbmemdup(vbuf, vsiz);
if((pv = strchr(ubuf, '#')) != NULL) *pv = '\0';
llen = strlen(ubuf);
if(llen > 1024 || cbmapget(ulinks, ubuf, llen, NULL)){
free(ubuf);
continue;
}
cbmapput(ulinks, ubuf, -1, "", 0, FALSE);
allow = FALSE;
for(j = 0; j < cblistnum(waver->pmrules); j++){
pmrule = (PMRULE *)cblistval(waver->pmrules, j, NULL);
switch(pmrule->visit){
case 1:
if(est_regex_match(pmrule->regex, ubuf)) allow = TRUE;
break;
case -1:
if(est_regex_match(pmrule->regex, ubuf)) allow = FALSE;
break;
}
}
if(!allow){
free(ubuf);
continue;
}
linknum++;
masstune = 1.0;
if((pv = strstr(ubuf, "://")) != NULL && (pv = strchr(pv + 3, '/')) != NULL){
vbuf = cbmapget(waver->sites, ubuf, pv - ubuf + 1, NULL);
num = (vbuf ? atoi(vbuf) : 0) + 1;
if(num > waver->masscheck) masstune /= sqrt((double)num / waver->masscheck);
}
slash = 6;
for(pv = ubuf; *pv != '\0'; pv++){
switch(*pv){
case '/': slash += 1; break;
case '?': slash += 5; break;
case '&': slash += 1; break;
case ';': slash += 1; break;
}
}
remoteness = 8.0;
benc = cbmemdup(base, -1);
tenc = cbmemdup(ubuf, -1);
if((pv = strchr(benc, '?')) != NULL) pv[0] = '\0';
if((pv = strchr(tenc, '?')) != NULL) pv[0] = '\0';
if(!strcmp(tenc, benc)){
priority *= 0.7;
remoteness = 1.5;
} else {
if((pv = strrchr(benc, '/')) != NULL) pv[1] = '\0';
if((pv = strrchr(tenc, '/')) != NULL) pv[1] = '\0';
if(cbstrfwmatch(tenc, benc)){
priority *= 0.9;
remoteness = 4.0;
}
}
free(tenc);
free(benc);
switch(waver->strategy){
case CS_BALANCED:
priority = (similarity * 128 * masstune) / depthtune / lnumtune / slash;
priority *= (lnum - (i / remoteness)) / lnum;
if(llen > 80) priority /= pow(llen / 80.0, 0.7);
break;
case CS_SIMILARITY:
priority = similarity;
priority *= 0.9 + ((lnum - i) / (double)lnum) / 50;
break;
case CS_DEPTH:
priority = (depth + 1) * 0.001;
priority = priority > 1.0 ? 1.0 : priority;
priority *= 0.9 + ((lnum - i) / (double)lnum) / 50;
break;
case CS_WIDTH:
priority = 1.0 / (depth + 1);
priority *= 0.9 + ((lnum - i) / (double)lnum) / 50;
break;
case CS_RANDOM:
priority = (est_random() * 128 * masstune) / depthtune / lnumtune / slash;
priority *= (lnum - (i / remoteness)) / lnum;
if(llen > 80) priority /= pow(llen / 80.0, 0.7);
break;
default:
priority = (128 * masstune) / depthtune / lnumtune / slash;
priority *= (lnum - (i / remoteness)) / lnum;
if(llen > 80) priority /= pow(llen / 80.0, 0.7);
break;
}
tenc = cbsprintf("%d:%d:%.5f\t%s", depth + 1, id, psim, ubuf);
queue_enqueue(waver->queue, tenc, 1.0 - priority);
free(tenc);
free(ubuf);
}
cbmapclose(ulinks);
if(queue_rnum(waver->queue) > waver->queuesize * 1.4){
log_print(LL_INFO, "queue sliming: %d", queue_rnum(waver->queue));
if(!queue_slim(waver->queue, waver->queuesize))
log_print(LL_ERROR, "queue sliming failed");
}
}
/* parse arguments of the init command */
static int runinit(int argc, char **argv){
char *rootdir;
int i, opts, rv;
rootdir = NULL;
opts = 0;
for(i = 2; i < argc; i++){
if(!rootdir && argv[i][0] == '-'){
if(!strcmp(argv[i], "-apn")){
opts |= WI_PERFNG;
} else if(!strcmp(argv[i], "-acc")){
opts |= WI_CHRCAT;
} else if(!strcmp(argv[i], "-xs")){
opts |= WI_SMALL;
} else if(!strcmp(argv[i], "-xl")){
opts |= WI_LARGE;
} else if(!strcmp(argv[i], "-xh")){
opts |= WI_HUGE;
} else if(!strcmp(argv[i], "-sv")){
opts |= WI_SCVOID;
} else if(!strcmp(argv[i], "-si")){
opts |= WI_SCINT;
} else if(!strcmp(argv[i], "-sa")){
opts |= WI_SCASIS;
} else {
usage();
}
} else if(!rootdir){
rootdir = argv[i];
} else {
usage();
}
}
if(!rootdir) usage();
rv = procinit(rootdir, opts);
return rv;
}
/* parse arguments of the crawl command */
static int runcrawl(int argc, char **argv){
char *rootdir;
int i, mode, rv;
rootdir = NULL;
mode = CM_CONTINUE;
for(i = 2; i < argc; i++){
if(!rootdir && argv[i][0] == '-'){
if(!strcmp(argv[i], "-restart")){
mode = CM_RESTART;
} else if(!strcmp(argv[i], "-revisit")){
mode = CM_REVISIT;
} else if(!strcmp(argv[i], "-revcont")){
mode = CM_REVCONT;
} else {
usage();
}
} else if(!rootdir){
rootdir = argv[i];
} else {
usage();
}
}
if(!rootdir) usage();
rv = proccrawl(rootdir, mode);
return rv;
}
/* parse arguments of the unittest command */
static int rununittest(int argc, char **argv){
char *rootdir;
int i, rv;
rootdir = NULL;
for(i = 2; i < argc; i++){
if(!rootdir && argv[i][0] == '-'){
usage();
} else if(!rootdir){
rootdir = argv[i];
} else {
usage();
}
}
if(!rootdir) usage();
rv = procunittest(rootdir);
return rv;
}
/* parse arguments of the fetch command */
static int runfetch(int argc, char **argv){
char *url;
int i, rv;
url = NULL;
for(i = 2; i < argc; i++){
if(!url && argv[i][0] == '-'){
if(!strcmp(argv[i], "-proxy")){
if(++i >= argc) usage();
g_pxhost = argv[i];
if(++i >= argc) usage();
g_pxport = atoi(argv[i]);
} else if(!strcmp(argv[i], "-tout")){
if(++i >= argc) usage();
g_timeout = atoi(argv[i]);
} else if(!strcmp(argv[i], "-il")){
if(++i >= argc) usage();
g_inputlang = strtolang(argv[i]);
} else {
usage();
}
} else if(!url){
url = argv[i];
} else {
usage();
}
}
if(!url) usage();
rv = procfetch(url);
return rv;
}
/* perform the init command */
static int procinit(const char *rootdir, int opts){
if(!waver_init(rootdir, opts)){
log_print(LL_ERROR, "initializing the root directory failed");
return 1;
}
log_open(rootdir, LOGFILE, LL_INFO, FALSE);
log_print(LL_INFO, "the root directory created");
return 0;
}
/* perform the init command */
static int proccrawl(const char *rootdir, int mode){
pthread_t th;
TARGSURL *targs;
WAVER *waver;
CBDATUM *kwbuf;
CBMAP *ulinks;
const char *kbuf, *rp;
char *url, *rec, *tmp, *endurl;
int i, err, depth, pid, thid, locked, ended;
double psim;
time_t t, mdate;
if(!(waver = waver_open(rootdir))){
log_print(LL_ERROR, "%s: could not open", rootdir);
return 1;
}
err = FALSE;
switch(mode){
default:
log_print(LL_INFO, "crawling started (continue)");
break;
case CM_RESTART:
log_print(LL_INFO, "crawling started (restart)");
break;
case CM_REVISIT:
log_print(LL_INFO, "crawling started (revisit)");
break;
case CM_REVCONT:
log_print(LL_INFO, "crawling started (revcont)");
break;
}
if(mode == CM_RESTART){
while((tmp = queue_dequeue(waver->queue)) != NULL){
free(tmp);
}
}
endurl = NULL;
if(mode == CM_REVISIT || mode == CM_REVCONT){
t = time(NULL);
criterinit(waver->trace);
while((url = criternext(waver->trace, NULL)) != NULL){
if((rec = crget(waver->trace, url, -1, 0, -1, NULL)) != NULL){
if(est_mtdb_uri_to_id(waver->index, url) > 0){
mdate = (time_t)strtod(rec, NULL);
depth = 0;
pid = 0;
psim = 0.0;
if((rp = strchr(rec, ':')) != NULL){
rp++;
depth = atoi(rp);
if((rp = strchr(rp, ':')) != NULL){
rp++;
pid = atoi(rp);
if((rp = strchr(rp, ':')) != NULL){
rp++;
psim = strtod(rp, NULL);
}
}
}
tmp = cbsprintf("%d:%d:%.5f\t%s", depth, pid, psim, url);
queue_enqueue(waver->queue, tmp, (mdate / t) * MINPRIOR);
free(tmp);
}
free(rec);
}
free(endurl);
endurl = url;
}
}
if(mode == CM_RESTART){
criterinit(waver->trace);
while((url = criternext(waver->trace, NULL)) != NULL){
crout(waver->trace, url, -1);
free(url);
}
}
cbmapiterinit(waver->seeds);
ulinks = cbmapopen();
while((kbuf = cbmapiternext(waver->seeds, NULL)) != NULL){
seedurldocs(waver, kbuf, 0, strtod(cbmapget(waver->seeds, kbuf, -1, NULL), NULL), ulinks);
}
cbmapclose(ulinks);
kwords_reduce(waver->kwords, waver->seedkeynum, FALSE);
kwbuf = cbdatumopen(NULL, -1);
cbmapiterinit(waver->kwords);
for(i = 0; (kbuf = cbmapiternext(waver->kwords, NULL)) != NULL; i++){
if(i > 0) cbdatumprintf(kwbuf, ", ");
cbdatumprintf(kwbuf, "%s (%s)", kbuf, cbmapget(waver->kwords, kbuf, -1, NULL));
}
log_print(LL_DEBUG, "seed keywords: %s", cbdatumptr(kwbuf));
cbdatumclose(kwbuf);
ended = FALSE;
thid = 0;
while(!g_sigterm && !ended && (tmp = dequeue(waver, &depth, &pid, &psim)) != NULL){
if(endurl && !strcmp(tmp, endurl)){
est_usleep(SLEEPUSEC);
if(mode == CM_REVISIT){
ended = TRUE;
} else {
log_print(LL_INFO, "waiting for threads: %d", accessthnum(0));
t = time(NULL);
while(accessthnum(0) > 0 && time(NULL) < t + waver->timeout * 2 + 1){
est_usleep(SLEEPUSEC);
}
free(endurl);
endurl = NULL;
}
}
mdate = 0;
if(pthread_mutex_lock(&g_mutex) == 0){
if((rec = crget(waver->trace, tmp, -1, 0, -1, NULL)) != NULL){
mdate = (time_t)strtod(rec, NULL);
free(rec);
}
pthread_mutex_unlock(&g_mutex);
if(mdate + waver->revisit >= time(NULL)){
log_print(LL_DEBUG, "not modified: %s", tmp);
free(tmp);
continue;
}
} else {
log_print(LL_ERROR, "could not get mutex");
}
if(cbmaprnum(waver->nodes) > 0 &&
(waver->curnode < 1 || waver->minload >= 1.0 || thid % NODERTTNUM == 0 ||
(thid % (NODERTTNUM / 10) == 0 && waver_current_node_load(waver) > 0.85))){
waver_set_current_node(waver);
log_print(LL_INFO, "current node changed: %d: %f", waver->curnode, waver->minload);
}
thid++;
targs = cbmalloc(sizeof(TARGSURL));
targs->thid = thid;
targs->waver = waver;
targs->url = tmp;
targs->depth = depth;
targs->pid = pid;
targs->psim = psim;
targs->mdate = mdate;
if(waver->thnum > 1){
while(accessthnum(0) >= waver->thnum){
est_usleep(SLEEPUSEC);
}
if(pthread_create(&th, NULL, geturldoc, targs) == 0){
pthread_detach(th);
if(thid <= waver->thnum) est_usleep(SLEEPUSEC);
} else {
geturldoc(targs);
}
} else {
geturldoc(targs);
}
if(thid % 256 == 0){
locked = pthread_mutex_lock(&g_mutex) == 0;
log_print(LL_INFO, "status: dnum=%d, wnum=%d, size=%.0f, queue=%d",
est_mtdb_doc_num(waver->index), est_mtdb_word_num(waver->index),
est_mtdb_size(waver->index), queue_rnum(waver->queue) + 1);
if(locked) pthread_mutex_unlock(&g_mutex);
est_usleep(SLEEPUSEC);
}
}
est_usleep(SLEEPUSEC);
if(waver->thnum > 1){
log_print(LL_INFO, "waiting for threads: %d", accessthnum(0));
t = time(NULL);
while(accessthnum(0) > 0){
if(time(NULL) > t + waver->timeout * 8 + 60){
log_print(LL_WARN, "thread waiting timed out: %d", accessthnum(0));
raise(3);
est_usleep(1000 * 1000 * 5);
break;
}
est_usleep(SLEEPUSEC);
}
}
free(endurl);
log_print(LL_INFO, "crawling finished");
locked = pthread_mutex_lock(&g_mutex) == 0;
g_sigterm = TRUE;
if(!waver_close(waver)){
log_print(LL_ERROR, "%s: closing failed", rootdir);
err = TRUE;
}
if(locked) pthread_mutex_unlock(&g_mutex);
if(!err) log_print(LL_INFO, "finished successfully");
return err ? 1 : 0;
}
/* perform the unittest command */
static int procunittest(const char *rootdir){
WAVER *waver;
QUEUE *queue;
CBMAP *seeds, *kwords;
char uri[URIBUFSIZ], *vbuf;
int i, err;
log_print(LL_INFO, "initializing the waver handle");
if(!waver_init(rootdir, 0)){
log_print(LL_ERROR, "%s: initializing failed", rootdir);
return FALSE;
}
log_print(LL_INFO, "opening the waver handle");
if(!(waver = waver_open(rootdir))){
log_print(LL_ERROR, "%s: opening failed", rootdir);
return FALSE;
}
err = FALSE;
log_print(LL_INFO, "checking seeding");
seeds = waver->seeds;
for(i = 0; i < 100; i++){
sprintf(uri, "http://%05d/%x/%x.html",
i + 1, (int)(est_random() * 0x1000000), (int)(est_random() * 0x1000000));
cbmapput(seeds, uri, -1, "", 0, TRUE);
}
log_print(LL_INFO, "checking priority queue");
queue = waver->queue;
for(i = 0; i < 100; i++){
sprintf(uri, "0:0:0.0\thttp://%05d/%x/%x.html",
i + 1, (int)(est_random() * 0x1000000), (int)(est_random() * 0x1000000));
if(!queue_enqueue(queue, uri, est_random())){
err = TRUE;
break;
}
if(i % 10 == 0) queue_set_range(queue, i);
}
if(queue_rnum(queue) != 100) err = TRUE;
if(err) log_print(LL_ERROR, "%s: enqueue failed", rootdir);
if(!queue_slim(queue, 60)) err = TRUE;
if(err) log_print(LL_ERROR, "%s: slim failed", rootdir);
for(i = 0; (vbuf = queue_dequeue(queue)) != NULL; i++){
free(vbuf);
}
if(i != 60){
err = TRUE;
log_print(LL_ERROR, "%s: dequeue failed", rootdir);
}
log_print(LL_INFO, "checking keyword map");
kwords = waver->kwords;
for(i = 0; i < 10000; i++){
sprintf(uri, "%d", (int)(est_random() * 1000));
kwords_add(kwords, uri, (int)(est_random() * 1000));
}
kwords_reduce(kwords, 100, TRUE);
log_print(LL_INFO, "closing the waver handle");
if(!waver_close(waver)){
log_print(LL_ERROR, "%s: closing failed", rootdir);
err = TRUE;
}
if(!err) log_print(LL_INFO, "finished successfully");
return err ? 1 : 0;
}
/* perform the fetch command */
static int procfetch(const char *url){
CBMAP *heads;
CBLIST *links;
CBDATUM *raw;
ESTDOC *doc;
const char *border, *vbuf;
char *str;
int i, code, vsiz;
raw = cbdatumopen(NULL, -1);
heads = cbmapopen();
links = cblistopen();
doc = est_doc_new();
if(!fetch_document(url, g_pxhost, g_pxport, g_timeout, -1, NULL, NULL, &code, raw, heads,
links, NULL, doc, g_inputlang)){
log_print(LL_WARN, "could not get: %d: %s", code, url);
est_doc_delete(doc);
cblistclose(links);
cbmapclose(heads);
cbdatumclose(raw);
return 1;
}
border = est_border_str();
printf("URL: %s\r\n", url);
str = cbdatestrhttp(time(NULL), 0);
printf("Date: %s\r\n", str);
free(str);
str = cbmimeencode((vbuf = est_doc_attr(doc, ESTDATTRTITLE)) ? vbuf : url, "UTF-8", TRUE);
printf("Subject: [estwaver] %s\r\n", str);
free(str);
printf("Content-Type: multipart/mixed; boundary=%s\r\n", border);
printf("\r\n");
printf("This is a multi-part message in MIME format.\n");
printf("\r\n");
printf("--%s\r\n", border);
printf("Content-Type: text/x-estraier-draft\r\n");
printf("X-Estwaver-Role: draft\r\n");
printf("\r\n");
str = est_doc_dump_draft(doc);
printf("%s", str);
free(str);
printf("\r\n");
printf("--%s\r\n", border);
printf("Content-Type: text/plain\r\n");
printf("X-Estwaver-Role: links\r\n");
printf("\r\n");
for(i = 0; i < cblistnum(links); i++){
printf("%s\n", cblistval(links, i, NULL));
}
printf("\r\n");
printf("--%s\r\n", border);
cbmapiterinit(heads);
while((vbuf = cbmapiternext(heads, &vsiz)) != NULL){
if(vsiz < 1){
printf("X-Original-HTTP-Response: %s\r\n", cbmapget(heads, vbuf, vsiz, NULL));
} else if(!strcmp(vbuf, "content-encoding")){
printf("X-Original-Content-Encoding: %s\r\n", cbmapget(heads, vbuf, vsiz, NULL));
} else {
str = capitalize(vbuf);
printf("%s: %s\r\n", str, cbmapget(heads, vbuf, vsiz, NULL));
free(str);
}
}
printf("X-Estwaver-Role: raw\r\n");
printf("\r\n");
fwrite(cbdatumptr(raw), 1, cbdatumsize(raw), stdout);
printf("\r\n");
printf("--%s--\r\n", border);
est_doc_delete(doc);
cblistclose(links);
cbmapclose(heads);
cbdatumclose(raw);
return 0;
}
/* get the language value */
static int strtolang(const char *str){
if(!cbstricmp(str, "en")) return ESTLANGEN;
if(!cbstricmp(str, "ja")) return ESTLANGJA;
if(!cbstricmp(str, "zh")) return ESTLANGZH;
if(!cbstricmp(str, "ko")) return ESTLANGKO;
return ESTLANGMISC;
}
/* make a capitalized string */
static char *capitalize(const char *str){
char *buf;
int i, cap;
buf = cbmemdup(str, -1);
cap = TRUE;
for(i = 0; buf[i] != '\0'; i++){
if(cap && buf[i] >= 'a' && buf[i] <= 'z'){
buf[i] -= 'a' - 'A';
}
cap = buf[i] == ' ' || buf[i] == '-';
}
return buf;
}
/* get keywords of a seed document */
static void seedurldocs(WAVER *waver, const char *url, int depth, double bias, CBMAP *ulinks){
PMRULE *pmrule;
ESTDOC *doc;
CBMAP *kwords;
CBLIST *links;
const char *kbuf;
char *ubuf, *pv;
int i, j, code, ksiz, num, len, allow;
double lnumtune;
if(g_sigterm) return;
ubuf = cbsprintf("%d:0:1.0\t%s", depth, url);
queue_enqueue(waver->queue, ubuf, depth * MINPRIOR);
free(ubuf);
links = cblistopen();
doc = est_doc_new();
log_print(LL_INFO, "fetching: %d: %s", depth, url);
fetch_document(url, waver->pxhost, waver->pxport, waver->timeout * 2, 0,
waver->urlrules, waver->mtrules, &code, NULL, NULL, links,
waver->unrules, doc, waver->language);
if(code == 200 && !est_doc_is_empty(doc)){
log_print(LL_INFO, "seeding: %.3f: %s", bias, url);
kwords = est_morph_etch_doc(doc, waver->seedkeynum);
cbmapiterinit(kwords);
while((kbuf = cbmapiternext(kwords, &ksiz)) != NULL){
num = atoi(cbmapget(kwords, kbuf, ksiz, NULL)) * bias;
if(num > 0) kwords_add(waver->kwords, kbuf, num);
}
if(depth < waver->seeddepth && bias > 0.0){
lnumtune = pow(cblistnum(links) + 2, 0.5);
for(i = 0; i < cblistnum(links); i++){
ubuf = cbmemdup(cblistval(links, i, NULL), -1);
if((pv = strchr(ubuf, '#')) != NULL) *pv = '\0';
len = strlen(ubuf);
if(len > 1024 || cbmapget(ulinks, ubuf, len, NULL) ||
cbmapget(waver->seeds, ubuf, len, NULL)){
free(ubuf);
continue;
}
cbmapput(ulinks, ubuf, -1, "", 0, FALSE);
allow = FALSE;
for(j = 0; j < cblistnum(waver->pmrules); j++){
pmrule = (PMRULE *)cblistval(waver->pmrules, j, NULL);
switch(pmrule->visit){
case 1:
if(est_regex_match(pmrule->regex, ubuf)) allow = TRUE;
break;
case -1:
if(est_regex_match(pmrule->regex, ubuf)) allow = FALSE;
break;
}
}
if(allow) seedurldocs(waver, ubuf, depth + 1, bias / lnumtune, ulinks);
free(ubuf);
}
}
cbmapclose(kwords);
} else {
log_print(LL_INFO, "ignored: %d: %s", code, url);
}
est_doc_delete(doc);
cblistclose(links);
}
/* access the number of threads */
static int accessthnum(int inc){
static pthread_mutex_t mymutex = PTHREAD_MUTEX_INITIALIZER;
int thnum;
if(pthread_mutex_lock(&mymutex) != 0){
log_print(LL_ERROR, "could not get mutex");
return INT_MAX;
}
g_thnum += inc;
thnum = g_thnum;
pthread_mutex_unlock(&mymutex);
return thnum;
}
/* put the current task */
static int puttask(const char *url){
if(pthread_mutex_lock(&g_mutex) != 0){
log_print(LL_ERROR, "could not get mutex");
return FALSE;
}
if(!cbmapput(g_tasks, url, -1, "", 0, FALSE)){
pthread_mutex_unlock(&g_mutex);
return FALSE;
}
pthread_mutex_unlock(&g_mutex);
return TRUE;
}
/* put the current task */
static void outtask(const char *url){
if(pthread_mutex_lock(&g_mutex) != 0){
log_print(LL_ERROR, "could not get mutex");
return;
}
cbmapout(g_tasks, url, -1);
pthread_mutex_unlock(&g_mutex);
return;
}
/* get a document of URL */
static void *geturldoc(void *args){
TARGSURL *myargs;
PMRULE *pmrule;
WAVER *waver;
CBMAP *heads, *kwords;
CBLIST *links;
CBDATUM *raw;
ESTDOC *doc;
char *url, *rec, *dpath, *epath;
char numbuf[NUMBUFSIZ], *tmp;
int i, thid, id, alive, code, allow;
double now;
accessthnum(1);
myargs = args;
thid = myargs->thid;
waver = myargs->waver;
url = myargs->url;
if(!puttask(url)){
log_print(LL_DEBUG, "[%d]: early collision: %s", thid, url);
free(url);
free(myargs);
accessthnum(-1);
return NULL;
}
if(waver->interval > 0) est_usleep(waver->interval * 1000);
alive = FALSE;
raw = cbdatumopen(NULL, -1);
heads = cbmapopen();
links = cblistopen();
doc = est_doc_new();
log_print(LL_INFO, "[%d]: fetching: %d: %s", thid, myargs->depth, url);
fetch_document(url, waver->pxhost, waver->pxport, waver->timeout, myargs->mdate,
waver->urlrules, waver->mtrules, &code, raw, heads, links,
waver->unrules, doc, waver->language);
if(g_sigterm){
log_print(LL_WARN, "[%d]: terminated: %s", thid, url);
if(pthread_mutex_lock(&g_mutex) == 0){
tmp = cbsprintf("%d:%d:%.5f\t%s", myargs->depth, myargs->pid, myargs->psim, url);
queue_enqueue(waver->queue, tmp, MINPRIOR);
free(tmp);
pthread_mutex_unlock(&g_mutex);
}
est_doc_delete(doc);
cblistclose(links);
cbmapclose(heads);
cbdatumclose(raw);
outtask(url);
free(url);
free(myargs);
accessthnum(-1);
return NULL;
}
if(pthread_mutex_lock(&g_mutex) == 0){
now = time(NULL);
if((rec = crget(waver->trace, url, -1, 0, -1, NULL)) != NULL){
if(strtod(rec, NULL) + waver->revisit >= now){
log_print(LL_DEBUG, "[%d]: late collision: %s", thid, url);
free(rec);