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tpws: multi-strategy

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bol-van
2024-09-19 21:06:58 +03:00
parent 9684e647ab
commit d4a7eef17e
12 changed files with 624 additions and 323 deletions
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39
tpws/protocol.c
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@@ -25,12 +25,45 @@ bool IsHttp(const uint8_t *data, size_t len)
{
return !!HttpMethod(data,len);
}
static bool IsHostAt(const uint8_t *p)
{
return \
p[0]=='\n' &&
(p[1]=='H' || p[1]=='h') &&
(p[2]=='o' || p[2]=='O') &&
(p[3]=='s' || p[3]=='S') &&
(p[4]=='t' || p[4]=='T') &&
p[5]==':';
}
static uint8_t *FindHostIn(uint8_t *buf, size_t bs)
{
size_t pos;
if (bs<6) return NULL;
bs-=6;
for(pos=0;pos<=bs;pos++)
if (IsHostAt(buf+pos))
return buf+pos;
return NULL;
}
static const uint8_t *FindHostInConst(const uint8_t *buf, size_t bs)
{
size_t pos;
if (bs<6) return NULL;
bs-=6;
for(pos=0;pos<=bs;pos++)
if (IsHostAt(buf+pos))
return buf+pos;
return NULL;
}
// pHost points to "Host: ..."
bool HttpFindHost(uint8_t **pHost,uint8_t *buf,size_t bs)
{
if (!*pHost)
{
*pHost = memmem(buf, bs, "\nHost:", 6);
*pHost = FindHostIn(buf, bs);
if (*pHost) (*pHost)++;
}
return !!*pHost;
@@ -39,7 +72,7 @@ bool HttpFindHostConst(const uint8_t **pHost,const uint8_t *buf,size_t bs)
{
if (!*pHost)
{
*pHost = memmem(buf, bs, "\nHost:", 6);
*pHost = FindHostInConst(buf, bs);
if (*pHost) (*pHost)++;
}
return !!*pHost;
@@ -132,7 +165,7 @@ bool HttpReplyLooksLikeDPIRedirect(const uint8_t *data, size_t len, const char *
}
size_t HttpPos(enum httpreqpos tpos_type, size_t hpos_pos, const uint8_t *http, size_t sz)
{
const uint8_t *method, *host;
const uint8_t *method, *host=NULL;
int i;
switch(tpos_type)