/usr/share/httrack/libtest/callbacks-example-displayheader.c is in libhttrack-dev 3.49.2-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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HTTrack external callbacks example : display all incoming request headers
Example of <wrappername>_init and <wrappername>_exit call (httrack >> 3.31)
.c file
How to build: (callback.so or callback.dll)
With GNU-GCC:
gcc -O -g3 -Wall -D_REENTRANT -shared -o mycallback.so callbacks-example.c -lhttrack2
With MS-Visual C++:
cl -LD -nologo -W3 -Zi -Zp4 -DWIN32 -Fe"mycallback.dll" callbacks-example.c libhttrack.lib
Note: the httrack library linker option is only necessary when using libhttrack's functions inside the callback
How to use:
httrack --wrapper mycallback ..
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* Standard httrack module includes */
#include "httrack-library.h"
#include "htsopt.h"
#include "htsdefines.h"
/* Local function definitions */
static int process(t_hts_callbackarg * carg, httrackp * opt, char *buff,
const char *adr, const char *fil, const char *referer_adr,
const char *referer_fil, htsblk * incoming);
/* external functions */
EXTERNAL_FUNCTION int hts_plug(httrackp * opt, const char *argv);
/*
module entry point
*/
EXTERNAL_FUNCTION int hts_plug(httrackp * opt, const char *argv) {
const char *arg = strchr(argv, ',');
if (arg != NULL)
arg++;
/* Plug callback functions */
CHAIN_FUNCTION(opt, receivehead, process, NULL);
return 1; /* success */
}
static int process(t_hts_callbackarg * carg, httrackp * opt, char *buff,
const char *adr, const char *fil, const char *referer_adr,
const char *referer_fil, htsblk * incoming) {
/* Call parent functions if multiple callbacks are chained. */
if (CALLBACKARG_PREV_FUN(carg, receivehead) != NULL) {
if (!CALLBACKARG_PREV_FUN(carg, receivehead)
(CALLBACKARG_PREV_CARG(carg), opt, buff, adr, fil, referer_adr,
referer_fil, incoming)) {
return 0; /* Abort */
}
}
/* Process */
printf("[ %s%s ]\n%s\n", adr, fil, buff);
return 1; /* success */
}
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