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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 -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 postprocess(t_hts_callbackarg *carg, httrackp *opt,
- char** html, int* len,
- const char* url_address, const char* url_file);
-
- /*
- 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, postprocess, postprocess, NULL);
-
- return 1; /* success */
- }
-
- static int postprocess(t_hts_callbackarg *carg, httrackp *opt, char** html,int* len,const char* url_address,const char* url_file) {
- char *old = *html;
-
- /* Call parent functions if multiple callbacks are chained. */
- if (CALLBACKARG_PREV_FUN(carg, postprocess) != NULL) {
- if (CALLBACKARG_PREV_FUN(carg, postprocess)(CALLBACKARG_PREV_CARG(carg), opt, html, len, url_address, url_file)) {
- /* Modified *html */
- old = *html;
- }
- }
-
- /* Process */
- *html = strdup(*html);
- hts_free(old);
-
- return 1;
- }
-