88 lines
1.7 KiB
C
88 lines
1.7 KiB
C
#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <gc.h>
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#include "wc.h"
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#include "wtf.h"
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char *get_null_terminated(const uint8_t *data, size_t size) {
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char *new_str = (char *)malloc(size+1);
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if (new_str == NULL){
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exit(1);
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}
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memcpy(new_str, data, size);
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new_str[size] = '\0';
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return new_str;
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}
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static void *die_oom(size_t bytes) {
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fprintf(stderr, "Out of memory: %lu bytes unavailable!\n", (unsigned long)bytes);
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exit(1);
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}
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int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size){
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static int init_done = 0;
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if (!init_done) {
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setenv("GC_LARGE_ALLOC_WARN_INTERVAL", "30000", 1);
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GC_INIT();
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#if (GC_VERSION_MAJOR>7) || ((GC_VERSION_MAJOR==7) && (GC_VERSION_MINOR>=2))
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GC_set_oom_fn(die_oom);
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#else
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GC_oom_fn = die_oom;
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#endif
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#ifdef USE_M17N
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#ifdef USE_UNICODE
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wtf_init(WC_CES_UTF_8, WC_CES_UTF_8);
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#else
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wtf_init(WC_CES_EUC_JP, WC_CES_EUC_JP);
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#endif
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#endif
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init_done = 1;
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}
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if (size < 30) {
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return 0;
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}
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GC_disable();
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char *new_str1 = get_null_terminated(data, 20);
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data += 20; size -= 20;
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char *new_str2 = get_null_terminated(data, size);
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wc_ces old, from, to;
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from = wc_guess_charset_short(new_str1,0);
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to = wc_guess_charset_short(new_str2, 0);
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char filename[256];
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sprintf(filename, "/tmp/libfuzzer.%d", getpid());
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FILE *fp = fopen(filename, "wb");
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if (fp) {
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fwrite(data, size, 1, fp);
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fclose(fp);
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}
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FILE *f = fopen(filename, "r");
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if (f) {
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Str s = Strfgetall(f);
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wc_Str_conv_with_detect(s, &from, from, to);
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if (s != NULL) {
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Strfree(s);
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}
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fclose(f);
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}
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unlink(filename);
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free(new_str1);
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free(new_str2);
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GC_enable();
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GC_gcollect();
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return 0;
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}
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