/* HTRobot.c
** W3C MINI ROBOT
**
** (c) COPRIGHT MIT 1995.
** Please first read the full copyright statement in the file COPYRIGH.
**
** This program illustrates how to travers links using the Anchor object
**
** Authors:
** HFN Henrik Frystyk Nielsen, (frystyk@w3.org)
**
** History:
** Dec 04 95 First version
*/
#include "WWWLib.h" /* Global Library Include file */
#include "WWWApp.h" /* Application stuff */
#include "WWWTrans.h"
#include "WWWInit.h"
#include "HText.h"
#include "HTRobot.h" /* Implemented here */
#ifndef W3C_VERSION
#define W3C_VERSION "Unspecified"
#endif
#define APP_NAME "W3CRobot"
#define APP_VERSION W3C_VERSION
#define DEFAULT_OUTPUT_FILE "robot.out"
#define DEFAULT_RULE_FILE "robot.conf"
#define DEFAULT_LOG_FILE "robot.log"
#define DEFAULT_HIT_FILE "robot.hit"
#define DEFAULT_MEMLOG "robot.mem"
#define DEFAULT_PREFIX ""
#define DEFAULT_DEPTH 0
#define DEFAULT_DELAY 50 /* Write delay in ms */
#if 0
#define HT_MEMLOG /* May be expensive in performance! */
#endif
/* #define SHOW_MSG (WWWTRACE || HTAlert_interactive()) */
#define SHOW_MSG (!(mr->flags & MR_QUIET))
#define DEFAULT_TIMEOUT 10000 /* timeout in millis */
#if defined(__svr4__)
#define CATCH_SIG
#endif
typedef enum _MRFlags {
MR_IMG = 0x1,
MR_LINK = 0x2,
MR_PREEMPTIVE = 0x4,
MR_TIME = 0x8,
MR_SAVE = 0x10,
MR_QUIET = 0x20,
MR_VALIDATE = 0x40,
MR_END_VALIDATE = 0x80
} MRFlags;
typedef struct _Robot {
int depth; /* How deep is our tree */
int cnt; /* Count of requests */
HTList * hyperdoc; /* List of our HyperDoc Objects */
HTList * htext; /* List of our HText Objects */
HTList * fingers;
int timer;
char * cwd; /* Current dir URL */
char * rules;
char * prefix;
char * logfile;
HTLog * log;
char * outputfile;
FILE * output;
char * hitfile;
MRFlags flags;
long total_bytes; /* Total number of bytes processed */
long total_docs; /* Total number of documents processed */
time_t time; /* Time of run */
} Robot;
typedef struct _Finger {
Robot * robot;
HTRequest * request;
HTParentAnchor * dest;
} Finger;
typedef enum _LoadState {
L_INVALID = -2,
L_LOADING = -1,
L_SUCCESS = 0,
L_ERROR
} LoadState;
/*
** The HyperDoc object is bound to the anchor and contains information about
** where we are in the search for recursive searches
*/
typedef struct _HyperDoc {
HTParentAnchor * anchor;
LoadState state;
int depth;
int hits;
} HyperDoc;
/*
** This is the HText object that is created every time we start parsing a
** HTML object
*/
struct _HText {
HTRequest * request;
};
PUBLIC HText * HTMainText = NULL;
PUBLIC HTParentAnchor * HTMainAnchor = NULL;
PUBLIC HTStyleSheet * styleSheet = NULL;
PRIVATE HTComparer HitSort;
/* ------------------------------------------------------------------------- */
/* Standard (non-error) Output
** ---------------------------
*/
PUBLIC int OutputData(const char * fmt, ...)
{
int ret;
va_list pArgs;
va_start(pArgs, fmt);
ret = vfprintf(stdout, fmt, pArgs);
va_end(pArgs);
return ret;
}
/* ------------------------------------------------------------------------- */
/* Create a "HyperDoc" object
** --------------------------
** A HyperDoc object contains information about whether we have already
** started checking the anchor and the depth in our search
*/
PRIVATE HyperDoc * HyperDoc_new (Robot * mr,HTParentAnchor * anchor, int depth)
{
HyperDoc * hd;
if ((hd = (HyperDoc *) HT_CALLOC(1, sizeof(HyperDoc))) == NULL)
HT_OUTOFMEM("HyperDoc_new");
hd->state = L_INVALID;
hd->depth = depth;
hd->hits = 1;
/* Bind the HyperDoc object together with the Anchor Object */
hd->anchor = anchor;
HTAnchor_setDocument(anchor, (void *) hd);
/* Add this HyperDoc object to our list */
if (!mr->hyperdoc) mr->hyperdoc = HTList_new();
HTList_addObject(mr->hyperdoc, (void *) hd);
return hd;
}
/* Delete a "HyperDoc" object
** --------------------------
*/
PRIVATE BOOL HyperDoc_delete (HyperDoc * hd)
{
if (hd) {
HT_FREE (hd);
return YES;
}
return NO;
}
/*
** Sort the anchor array and log reference count
*/
PRIVATE BOOL calculate_hits (Robot * mr, HTArray * array)
{
if (mr && array) {
HTLog * log = HTLog_open(mr->hitfile, YES, YES);
if (log) {
void ** data = NULL;
HTParentAnchor * anchor = NULL;
HTArray_sort(array, HitSort);
anchor = (HTParentAnchor *) HTArray_firstObject(array, data);
while (anchor) {
char * str = NULL;
char * uri = HTAnchor_address((HTAnchor *) anchor);
HyperDoc * hd = (HyperDoc *) HTAnchor_document(anchor);
if (uri && hd) {
if ((str = (char *) HT_MALLOC(strlen(uri) + 50)) == NULL)
HT_OUTOFMEM("calculate_hits");
sprintf(str, "%8d %s\n", hd->hits, uri);
HTLog_addLine(log, str);
HT_FREE(str);
}
HT_FREE(uri);
anchor = (HTParentAnchor *) HTArray_nextObject(array, data);
}
}
HTLog_close(log);
return YES;
}
return NO;
}
PRIVATE int HitSort (const void * a, const void * b)
{
HyperDoc * aa = HTAnchor_document(*(HTParentAnchor **) a);
HyperDoc * bb = HTAnchor_document(*(HTParentAnchor **) b);
if (aa && bb) return (bb->hits - aa->hits);
return bb - aa;
}
/* Statistics
** ----------
** Calculates a bunch of statistics for the anchors traversed
*/
PRIVATE BOOL calculate_statistics (Robot * mr)
{
if (!mr) return NO;
/* Calculate efficiency */
{
time_t t = time(NULL) - mr->time;
if (t > 0.0) {
double loadfactor = mr->total_bytes / t;
char bytes[50];
HTNumToStr(mr->total_bytes, bytes, 50);
HTTrace("Downloaded %s bytes in %ld document bodies in %ld seconds (%2.1f bytes/sec)\n",
bytes, mr->total_docs, t, loadfactor);
}
}
/* Create an array of existing anchors */
if (mr->total_docs > 1) {
HTArray * array = HTAnchor_getArray(mr->total_docs);
if (array) {
/* Sort after hit counts */
if (mr->hitfile) calculate_hits(mr, array);
/* Add as may other stats here as you like */
HTArray_delete(array);
}
}
return YES;
}
/* Create a Command Line Object
** ----------------------------
*/
PRIVATE Robot * Robot_new (void)
{
Robot * me;
if ((me = (Robot *) HT_CALLOC(1, sizeof(Robot))) == NULL)
HT_OUTOFMEM("Robot_new");
me->hyperdoc = HTList_new();
me->htext = HTList_new();
me->timer = DEFAULT_TIMEOUT;
me->cwd = HTGetCurrentDirectoryURL();
me->output = OUTPUT;
me->cnt = 0;
me->fingers = HTList_new();
return me;
}
/* Delete a Command Line Object
** ----------------------------
*/
PRIVATE BOOL Robot_delete (Robot * me)
{
if (me) {
HTList_delete(me->fingers);
/* Calculate statistics */
calculate_statistics(me);
if (me->hyperdoc) {
HTList * cur = me->hyperdoc;
HyperDoc * pres;
while ((pres = (HyperDoc *) HTList_nextObject(cur)))
HyperDoc_delete(pres);
HTList_delete(me->hyperdoc);
}
if (me->htext) {
HTList * cur = me->htext;
HText * pres;
while ((pres = (HText *) HTList_nextObject(cur)))
HText_free(pres);
HTList_delete(me->htext);
}
if (me->log) HTLog_close(me->log);
if (me->output && me->output != STDOUT) fclose(me->output);
if (me->flags & MR_TIME) {
time_t local = time(NULL);
HTTrace("Robot terminated %s\n",HTDateTimeStr(&local,YES));
}
HT_FREE(me->cwd);
HT_FREE(me->prefix);
HT_FREE(me);
return YES;
}
return NO;
}
/*
** This function creates a new finger object and initializes it with a new request
*/
PRIVATE Finger * Finger_new (Robot * robot, HTParentAnchor * dest, HTMethod method)
{
Finger * me;
HTRequest * request = HTRequest_new();
if ((me = (Finger *) HT_CALLOC(1, sizeof(Finger))) == NULL)
HT_OUTOFMEM("Finger_new");
me->robot = robot;
me->request = request;
me->dest = dest;
HTList_addObject(robot->fingers, (void *)me);
/* Set the context for this request */
HTRequest_setContext (request, me);
/* Check the various flags to customize the request */
if (robot->flags & MR_PREEMPTIVE)
HTRequest_setPreemptive(request, YES);
if (robot->flags & MR_VALIDATE)
HTRequest_setReloadMode(request, HT_CACHE_VALIDATE);
if (robot->flags & MR_END_VALIDATE)
HTRequest_setReloadMode(request, HT_CACHE_END_VALIDATE);
/* We wanna make sure that we are sending a Host header (default) */
HTRequest_addRqHd(request, HT_C_HOST);
/* Set the method for this request */
HTRequest_setMethod(request, method);
robot->cnt++;
return me;
}
PRIVATE int Finger_delete (Finger * me)
{
HTList_removeObject(me->robot->fingers, (void *)me);
me->robot->cnt--;
/*
** If we are down at one request then flush the output buffer
*/
if (me->request) {
if (me->robot->cnt == 1) HTRequest_forceFlush(me->request);
HTRequest_delete(me->request);
}
/*
** Delete the request and free myself
*/
HT_FREE(me);
return YES;
}
/*
** Cleanup and make sure we close all connections including the persistent
** ones
*/
PRIVATE void Cleanup (Robot * me, int status)
{
Robot_delete(me);
HTProfile_delete();
#ifdef HT_MEMLOG
HTMemLog_close();
#endif
#ifdef VMS
exit(status ? status : 1);
#else
exit(status ? status : 0);
#endif
}
#ifdef CATCH_SIG
#include <signal.h>
/* SetSignal
** This function sets up signal handlers. This might not be necessary to
** call if the application has its own handlers (lossage on SVR4)
*/
PRIVATE void SetSignal (void)
{
/* On some systems (SYSV) it is necessary to catch the SIGPIPE signal
** when attemting to connect to a remote host where you normally should
** get `connection refused' back
*/
if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) {
if (PROT_TRACE) HTTrace("HTSignal.... Can't catch SIGPIPE\n");
} else {
if (PROT_TRACE) HTTrace("HTSignal.... Ignoring SIGPIPE\n");
}
#ifdef HT_MEMLOG
HTMemLog_flush();
#endif
}
#endif /* CATCH_SIG */
PRIVATE void VersionInfo (void)
{
OutputData("\n\nW3C Reference Software\n\n");
OutputData("\tW3C Mini Robot (%s) version %s.\n",
APP_NAME, APP_VERSION);
OutputData("\tW3C Reference Library version %s.\n\n",HTLib_version());
OutputData("Please send feedback to <libwww@w3.org>\n");
}
/* terminate_handler
** -----------------
** This function is registered to handle the result of the request.
** If no more requests are pending then terminate program
*/
PRIVATE int terminate_handler (HTRequest * request, HTResponse * response,
void * param, int status)
{
Finger * finger = (Finger *) HTRequest_context(request);
Robot * mr = finger->robot;
if (SHOW_MSG) HTTrace("Robot....... done with %s\n", HTAnchor_physical(finger->dest));
/* Count the amount of body data that we have read */
if (status == HT_LOADED && HTRequest_method(request) == METHOD_GET) {
mr->total_bytes += HTAnchor_length(HTRequest_anchor(request));
}
/* Count the number of documents that we have processed */
mr->total_docs++;
/* Delete this thread */
Finger_delete(finger);
/* Should we stop? */
if (mr->cnt <= 0) {
if (SHOW_MSG) HTTrace(" Everything is finished...\n");
Cleanup(mr, 0); /* No way back from here */
}
if (SHOW_MSG) HTTrace(" %d outstanding request%s\n", mr->cnt, mr->cnt == 1 ? "" : "s");
return HT_OK;
}
/* ------------------------------------------------------------------------- */
/* HTEXT INTERFACE */
/* ------------------------------------------------------------------------- */
PUBLIC HText * HText_new2 (HTRequest * request, HTParentAnchor * anchor,
HTStream * stream)
{
HText * me;
Finger * finger = (Finger *) HTRequest_context(request);
Robot * mr = finger->robot;
if ((me = (HText *) HT_CALLOC(1, sizeof(HText))) == NULL)
HT_OUTOFMEM("HText_new2");
/* Bind the HText object together with the Request Object */
me->request = request;
/* Add this HyperDoc object to our list */
if (!mr->htext) mr->htext = HTList_new();
HTList_addObject(mr->htext, (void *) me);
return me;
}
PUBLIC void HText_free (HText * me) {
if (me) HT_FREE (me);
}
PUBLIC void HText_beginAnchor (HText * text, HTChildAnchor * anchor)
{
if (text && anchor) {
Finger * finger = (Finger *) HTRequest_context(text->request);
Robot * mr = finger->robot;
HTAnchor * dest = HTAnchor_followMainLink((HTAnchor *) anchor);
HTParentAnchor * dest_parent = HTAnchor_parent(dest);
char * uri = HTAnchor_address((HTAnchor *) dest_parent);
HyperDoc * hd = HTAnchor_document(dest_parent);
BOOL prefix_match = YES;
if (!uri) return;
if (SHOW_MSG) HTTrace("Robot....... Found `%s\' - ", uri ? uri : "NULL\n");
/* Check for prefix match */
if (mr->prefix) prefix_match = HTStrMatch(mr->prefix, uri) ? YES : NO;
/* Test whether we already have a hyperdoc for this document */
if (hd) {
if (SHOW_MSG) HTTrace("Already checked\n");
hd->hits++;
} else if (mr->flags & MR_LINK && prefix_match && dest_parent) {
HTParentAnchor * parent = HTRequest_parent(text->request);
HyperDoc * last = HTAnchor_document(parent);
int depth = last ? last->depth+1 : 0;
Finger * newfinger = Finger_new(mr, dest_parent, METHOD_GET);
HTRequest * newreq = newfinger->request;
HyperDoc_new(mr, dest_parent, depth);
HTRequest_setParent(newreq, HTRequest_anchor(text->request));
if (depth >= mr->depth) {
if (SHOW_MSG)
HTTrace("loading at depth %d using HEAD\n", depth);
HTRequest_setMethod(newreq, METHOD_HEAD);
HTRequest_setOutputFormat(newreq, WWW_DEBUG);
} else {
if (SHOW_MSG) HTTrace("loading at depth %d\n", depth);
}
if (HTLoadAnchor((HTAnchor *) dest_parent, newreq) != YES) {
if (SHOW_MSG) HTTrace("not tested!\n");
Finger_delete(newfinger);
}
} else {
if (SHOW_MSG) HTTrace("does not fulfill constraints\n");
}
HT_FREE(uri);
}
}
PUBLIC void HText_appendImage (HText * text, HTChildAnchor * anchor,
const char *alt, const char * align, BOOL isMap)
{
if (text && anchor) {
Finger * finger = (Finger *) HTRequest_context(text->request);
Robot * mr = finger->robot;
HTParentAnchor * dest = (HTParentAnchor *)
HTAnchor_followMainLink((HTAnchor *) anchor);
HyperDoc * hd = HTAnchor_document(dest);
/* Test whether we already have a hyperdoc for this document */
if (mr->flags & MR_IMG && dest && !hd) {
HTParentAnchor * parent = HTRequest_parent(text->request);
HyperDoc * last = HTAnchor_document(parent);
int depth = last ? last->depth+1 : 0;
Finger * newfinger = Finger_new(mr, dest,
mr->flags & MR_SAVE ?
METHOD_GET : METHOD_HEAD);
HTRequest * newreq = newfinger->request;
HyperDoc_new(mr, dest, depth);
if (SHOW_MSG) {
char * uri = HTAnchor_address((HTAnchor *) dest);
HTTrace("Robot....... Checking Image `%s\'\n", uri);
HT_FREE(uri);
}
if (HTLoadAnchor((HTAnchor *) dest, newreq) != YES) {
if (SHOW_MSG)
HTTrace("Robot....... Image not tested!\n");
Finger_delete(newfinger);
}
}
}
}
PUBLIC void HText_endAnchor (HText * text) {}
PUBLIC void HText_appendText (HText * text, const char * str) {}
PUBLIC void HText_appendCharacter (HText * text, char ch) {}
PUBLIC void HText_endAppend (HText * text) {}
PUBLIC void HText_setStyle (HText * text, HTStyle * style) {}
PUBLIC void HText_beginAppend (HText * text) {}
PUBLIC void HText_appendParagraph (HText * text) {}
PRIVATE int RobotTrace (const char * fmt, va_list pArgs)
{
return (vfprintf(stderr, fmt, pArgs));
}
/* ------------------------------------------------------------------------- */
/* MAIN PROGRAM */
/* ------------------------------------------------------------------------- */
int main (int argc, char ** argv)
{
int status = 0;
int arg;
BOOL cache = NO; /* Use persistent cache */
BOOL flush = NO; /* flush the persistent cache */
char * cache_root = NULL;
HTChunk * keywords = NULL; /* From command line */
int keycnt = 0;
Robot * mr = NULL;
Finger * finger = NULL;
HTParentAnchor * startAnchor = NULL;
/* Starts Mac GUSI socket library */
#ifdef GUSI
GUSISetup(GUSIwithSIOUXSockets);
GUSISetup(GUSIwithInternetSockets);
#endif
#ifdef __MWERKS__ /* STR */
InitGraf((Ptr) &qd.thePort);
InitFonts();
InitWindows();
InitMenus(); TEInit();
InitDialogs(nil);
InitCursor();
SIOUXSettings.asktosaveonclose = false;
argc=ccommand(&argv);
#endif /* __MWERKS__ */
#ifdef HT_MEMLOG
HTMemLog_open(DEFAULT_MEMLOG, 8192, YES);
#endif
/* Initiate W3C Reference Library with a robot profile */
HTProfile_newRobot(APP_NAME, APP_VERSION);
HTTrace_setCallback(RobotTrace);
/* Add the default HTML parser to the set of converters */
{
HTList * converters = HTFormat_conversion();
HTMLInit(converters);
}
/* Build a new robot object */
mr = Robot_new();
/* Scan command Line for parameters */
for (arg=1; arg<argc; arg++) {
if (*argv[arg] == '-') {
/* non-interactive */
if (!strcmp(argv[arg], "-n")) {
HTAlert_setInteractive(NO);
/* log file */
} else if (!strcmp(argv[arg], "-l")) {
mr->logfile = (arg+1 < argc && *argv[arg+1] != '-') ?
argv[++arg] : DEFAULT_LOG_FILE;
/* hit file */
} else if (!strcmp(argv[arg], "-hit")) {
mr->hitfile = (arg+1 < argc && *argv[arg+1] != '-') ?
argv[++arg] : DEFAULT_HIT_FILE;
/* rule file */
} else if (!strcmp(argv[arg], "-r")) {
mr->rules = (arg+1 < argc && *argv[arg+1] != '-') ?
argv[++arg] : DEFAULT_RULE_FILE;
/* output filename */
} else if (!strcmp(argv[arg], "-o")) {
mr->outputfile = (arg+1 < argc && *argv[arg+1] != '-') ?
argv[++arg] : DEFAULT_OUTPUT_FILE;
/* URI prefix */
} else if (!strcmp(argv[arg], "-prefix")) {
char * prefix = NULL;
prefix = (arg+1 < argc && *argv[arg+1] != '-') ?
argv[++arg] : DEFAULT_PREFIX;
if (*prefix) {
StrAllocCopy(mr->prefix, prefix);
StrAllocCat(mr->prefix, "*");
}
/* timeout -- Change the default request timeout */
} else if (!strcmp(argv[arg], "-timeout")) {
int timeout = (arg+1 < argc && *argv[arg+1] != '-') ?
atoi(argv[++arg]) : DEFAULT_TIMEOUT;
if (timeout > 0) mr->timer = timeout;
/* Force no pipelined requests */
} else if (!strcmp(argv[arg], "-nopipe")) {
HTTP_setConnectionMode(HTTP_NO_PIPELINING);
/* Start the persistent cache */
} else if (!strcmp(argv[arg], "-cache")) {
cache = YES;
/* Determine the cache root */
} else if (!strcmp(argv[arg], "-cacheroot")) {
cache_root = (arg+1 < argc && *argv[arg+1] != '-') ?
argv[++arg] : NULL;
/* Stream write flush delay in ms */
} else if (!strcmp(argv[arg], "-delay")) {
int delay = (arg+1 < argc && *argv[arg+1] != '-') ?
atoi(argv[++arg]) : DEFAULT_DELAY;
HTHost_setDefaultWriteDelay(delay);
/* Persistent cache flush */
} else if (!strcmp(argv[arg], "-flush")) {
flush = YES;
/* Do a cache validation */
} else if (!strcmp(argv[arg], "-validate")) {
mr->flags |= MR_VALIDATE;
/* Do an end-to-end cache-validation */
} else if (!strcmp(argv[arg], "-endvalidate")) {
mr->flags |= MR_END_VALIDATE;
/* preemptive or non-preemptive access */
} else if (!strcmp(argv[arg], "-single")) {
mr->flags |= MR_PREEMPTIVE;
/* test inlined images */
} else if (!strcmp(argv[arg], "-img")) {
mr->flags |= MR_IMG;
/* load inlined images */
} else if (!strcmp(argv[arg], "-saveimg")) {
mr->flags |= (MR_IMG | MR_SAVE);
/* load anchors */
} else if (!strcmp(argv[arg], "-link")) {
mr->flags |= MR_LINK;
mr->depth = (arg+1 < argc && *argv[arg+1] != '-') ?
atoi(argv[++arg]) : DEFAULT_DEPTH;
/* Output start and end time */
} else if (!strcmp(argv[arg], "-ss")) {
time_t local = time(NULL);
HTTrace("Robot started on %s\n",
HTDateTimeStr(&local, YES));
mr->flags |= MR_TIME;
/* print version and exit */
} else if (!strcmp(argv[arg], "-version")) {
VersionInfo();
Cleanup(mr, 0);
/* run in quiet mode */
} else if (!strcmp(argv[arg], "-q")) {
mr->flags |= MR_QUIET;
#ifdef WWWTRACE
/* trace flags */
} else if (!strncmp(argv[arg], "-v", 2)) {
HTSetTraceMessageMask(argv[arg]+2);
#endif
} else {
if (SHOW_MSG) HTTrace("Bad Argument (%s)\n", argv[arg]);
}
} else { /* If no leading `-' then check for URL or keywords */
if (!keycnt) {
char * ref = HTParse(argv[arg], mr->cwd, PARSE_ALL);
startAnchor = (HTParentAnchor *) HTAnchor_findAddress(ref);
HyperDoc_new(mr, startAnchor, 0);
keycnt = 1;
HT_FREE(ref);
} else { /* Check for successive keyword arguments */
char *escaped = HTEscape(argv[arg], URL_XALPHAS);
if (keycnt++ <= 1)
keywords = HTChunk_new(128);
else
HTChunk_putc(keywords, ' ');
HTChunk_puts(keywords, HTStrip(escaped));
HT_FREE(escaped);
}
}
}
#ifdef CATCH_SIG
SetSignal();
#endif
if (!keycnt) {
if (SHOW_MSG) HTTrace("Please specify URL to check.\n");
Cleanup(mr, -1);
}
/* Testing that HTTrace is working */
if (SHOW_MSG) HTTrace ("Welcome to the W3C mini Robot\n");
/* Rule file specified? */
if (mr->rules) {
char * rules = HTParse(mr->rules, mr->cwd, PARSE_ALL);
if (!HTLoadRules(rules))
if (SHOW_MSG) HTTrace("Can't access rules\n");
HT_FREE(rules);
}
/* Output file specified? */
if (mr->outputfile) {
if ((mr->output = fopen(mr->outputfile, "wb")) == NULL) {
if (SHOW_MSG) HTTrace("Can't open `%s'\n", mr->outputfile);
mr->output = OUTPUT;
}
}
/* Should we use persistent cache? */
if (cache) {
HTCacheInit(cache_root, 20);
HTNet_addBefore(HTCacheFilter, "http://*", NULL, HT_FILTER_MIDDLE);
HTNet_addAfter(HTCacheUpdateFilter, "http://*", NULL,
HT_NOT_MODIFIED, HT_FILTER_MIDDLE);
/* Should we start by flushing? */
if (flush) HTCache_flushAll();
}
/* Log file specifed? */
if (mr->logfile) {
mr->log = HTLog_open(mr->logfile, YES, YES);
if (mr->log) HTNet_addAfter(HTLogFilter, NULL, mr->log, HT_ALL, HT_FILTER_LATE);
}
/* Register our own someterminater filter */
HTNet_addAfter(terminate_handler, NULL, NULL, HT_ALL, HT_FILTER_LAST);
/* Setting event timeout */
HTHost_setEventTimeout(mr->timer);
mr->time = time(NULL);
/* Start the request */
finger = Finger_new(mr, startAnchor, METHOD_GET);
/*
** Make sure that the first request is flushed immediately and not
** buffered in the output buffer
*/
HTRequest_setFlush(finger->request, YES);
/*
** Check whether we should do some kind of cache validation on
** the load
*/
if (mr->flags & MR_VALIDATE)
HTRequest_setReloadMode(finger->request, HT_CACHE_VALIDATE);
if (mr->flags & MR_END_VALIDATE)
HTRequest_setReloadMode(finger->request, HT_CACHE_END_VALIDATE);
/*
** Now do the load
*/
if (mr->flags & MR_PREEMPTIVE)
HTRequest_setPreemptive(finger->request, YES);
if (keywords) /* Search */
status = HTSearchAnchor(keywords, (HTAnchor *)startAnchor, finger->request);
else
status = HTLoadAnchor((HTAnchor *)startAnchor, finger->request);
if (keywords) HTChunk_delete(keywords);
if (status != YES) {
if (SHOW_MSG) HTTrace("Can't access resource\n");
Cleanup(mr, -1);
}
/* Go into the event loop... */
HTEventList_loop(finger->request);
/* Only gets here if event loop fails */
Cleanup(mr, 0);
return 0;
}
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