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callbacks-example-displayheader.c
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C/C++ Source or Header
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2006-06-04
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64 lines
/*
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 -lhttrack1
With MS-Visual C++:
cl -LD -nologo -W3 -Zi -Zp4 -DWIN32 -Fe"mycallback.dll" callbacks-example.c libhttrack1.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);
/*
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 */
}