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GoodbyeDPI
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Update goodbyedpi.c

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SashaXser 2023-11-14 12:15:22 +04:00 committed by GitHub
parent 3f4a99cc54
commit b7d3bf4abe
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1 changed files with 4 additions and 11 deletions
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15
src/goodbyedpi.c
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@ -234,7 +234,7 @@ static void finalize_filter_strings() {
}
static char* dumb_memmem(const char* haystack, unsigned int hlen,
const char* needle, unsigned int nlen)
const char* needle, unsigned int nlen)
{
if (nlen > hlen) return NULL;
if (nlen == 0) return (char*)haystack;
@ -243,17 +243,10 @@ static char* dumb_memmem(const char* haystack, unsigned int hlen,
for (size_t i = 0; i < 256; ++i) skip[i] = nlen;
for (size_t i = 0; i < nlen - 1; ++i) skip[(unsigned char)needle[i]] = nlen - i - 1;
size_t i = nlen - 1;
while (i < hlen) {
size_t j = nlen - 1;
while (j >= 0 && haystack[i] == needle[j]) {
--i;
--j;
for (size_t i = nlen - 1; i < hlen; i += skip[(unsigned char)haystack[i]]) {
if (memcmp(haystack + i - nlen + 1, needle, nlen) == 0) {
return (char*)(haystack + i - nlen + 1);
}
if (j == (size_t)-1) {
return (char*)(haystack + i + 1);
}
i += skip[(unsigned char)haystack[i]];
}
return NULL;