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/*****************************************************************************/
/*
HTTP2watch.c
VERSION HISTORY
---------------
14-FEB-2019 MGD Http2WatchFrame() relax WATCH from module to regular
17-AUG-2015 MGD initial
*/
/*****************************************************************************/
#ifdef WASD_VMS_V7
# undef __VMS_VER
# define __VMS_VER 70000000
# undef __CRTL_VER
# define __CRTL_VER 70000000
#else
# ifdef WASD_VMS_V7
# undef _VMS__V6__SOURCE
# define _VMS__V6__SOURCE
# undef __VMS_VER
# define __VMS_VER 70000000
# undef __CRTL_VER
# define __CRTL_VER 70000000
# endif
#endif
#include <stdio.h>
#include <ctype.h>
#include "wasd.h"
#define WASD_MODULE "HTTP2WATCH"
/******************/
/* global storage */
/******************/
/********************/
/* external storage */
/********************/
extern char *Http2ErrorArray [];
extern WATCH_STRUCT Watch;
/*****************************************************************************/
/*
*/
void Http2WatchFrame
(
HTTP2_STRUCT *h2ptr,
uchar *FramePtr,
uchar *DataPtr,
uint BufferLength,
BOOL magic
)
{
uint flags, flen, ident, type;
uchar *csptr, *fptr, *tptr;
char flstr [64];
/*********/
/* begin */
/*********/
if (WATCHMOD (h2ptr, WATCH_MOD_HTTP2))
WatchThis (WATCHITM(h2ptr), WATCH_MOD_HTTP2, "Http2WatchFrame()");
fptr = FramePtr;
HTTP2_GET_24 (fptr, flen);
HTTP2_GET_8 (fptr, type);
HTTP2_GET_8 (fptr, flags);
HTTP2_GET_32 (fptr, ident);
flstr[0] = '\0';
switch (type)
{
case HTTP2_FRAME_DATA :
if (magic)
tptr = "DATA (magic)";
else
tptr = "DATA";
if (flags & HTTP2_FLAG_DATA_END_STR)
strcat (flstr, " END-STREAM");
if (flags & HTTP2_FLAG_DATA_PADDED)
strcat (flstr, " PADDED");
if (flags & ~(HTTP2_FLAG_DATA_END_STR |
HTTP2_FLAG_DATA_PADDED))
strcat (flstr, " ?");
break;
case HTTP2_FRAME_HEADERS :
tptr = "HEADERS";
if (flags & HTTP2_FLAG_HEAD_END_STR)
strcat (flstr, " END-STREAM");
if (flags & HTTP2_FLAG_HEAD_END_HEAD)
strcat (flstr, " END-HEADERS");
if (flags & HTTP2_FLAG_HEAD_PADDED)
strcat (flstr, " PADDED");
if (flags & HTTP2_FLAG_HEAD_PRIORITY)
strcat (flstr, " PRIORITY");
if (flags & ~(HTTP2_FLAG_HEAD_END_STR |
HTTP2_FLAG_HEAD_END_HEAD |
HTTP2_FLAG_HEAD_PADDED |
HTTP2_FLAG_HEAD_PRIORITY))
strcat (flstr, " ?");
break;
case HTTP2_FRAME_PRIORITY :
tptr = "PRIORITY";
break;
case HTTP2_FRAME_RST_STREAM :
tptr = "RST_STREAM";
break;
case HTTP2_FRAME_SETTINGS :
tptr = "SETTINGS";
if (flags & HTTP2_FLAG_SETTINGS_ACK)
strcat (flstr, " ACKNOWLEDGE");
if (flags & ~HTTP2_FLAG_PING_ACK)
strcat (flstr, " ?");
break;
case HTTP2_FRAME_PUSH_PROMISE :
tptr = "PUSH_PROMISE";
if (flags & HTTP2_FLAG_PUSH_END_HEAD)
strcat (flstr, " END-HEADERS");
if (flags & HTTP2_FLAG_PUSH_PADDED)
strcat (flstr, " PADDED");
if (flags & ~(HTTP2_FLAG_PUSH_END_HEAD |
HTTP2_FLAG_PUSH_PADDED))
strcat (flstr, " ?");
break;
case HTTP2_FRAME_PING :
tptr = "PING";
if (flags & HTTP2_FLAG_PING_ACK)
strcat (flstr, " ACKNOWLEDGE");
if (flags & ~HTTP2_FLAG_PING_ACK)
strcat (flstr, " ?");
break;
case HTTP2_FRAME_GOAWAY :
tptr = "GOAWAY";
break;
case HTTP2_FRAME_WINDOW_UPDATE :
tptr = "WINDOW_UPDATE";
break;
case HTTP2_FRAME_CONTINUATION :
tptr = "CONTINUATION";
if (flags & HTTP2_FLAG_HEAD_END_HEAD)
strcat (flstr, " END-HEADERS");
if (flags & ~HTTP2_FLAG_HEAD_END_HEAD)
strcat (flstr, " ?");
break;
default :
tptr = "?";
}
if (flags && !flstr[0]) strcpy (flstr, " ?");
if (FramePtr >= h2ptr->ReadBufferPtr &&
FramePtr < h2ptr->ReadBufferPtr + h2ptr->ReadBufferSize)
csptr = "client";
else
csptr = "server";
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"FRAME !AZ length:!UL type:!UL !AZ flags:0x!2XL!AZ ident:!UL",
csptr, flen, type, tptr, flags, flstr, ident);
switch (type)
{
case HTTP2_FRAME_DATA :
if (DataPtr) fptr = DataPtr;
if (WATCHMOD (h2ptr, WATCH_MOD_HTTP2))
Http2WatchData (h2ptr, ident, flags, fptr, flen, BufferLength);
break;
case HTTP2_FRAME_HEADERS :
case HTTP2_FRAME_CONTINUATION :
Http2WatchHeaders (h2ptr, ident, flags, fptr, flen, BufferLength);
break;
case HTTP2_FRAME_PRIORITY :
Http2WatchPriority (h2ptr, ident, fptr, flen);
break;
case HTTP2_FRAME_RST_STREAM :
Http2WatchRstStream (h2ptr, ident, fptr, flen);
break;
case HTTP2_FRAME_SETTINGS :
Http2WatchSettings (h2ptr, csptr, fptr, flen);
break;
case HTTP2_FRAME_PUSH_PROMISE :
Http2WatchPushPromise (h2ptr, ident, flags, fptr, flen);
break;
case HTTP2_FRAME_PING :
Http2WatchPing (h2ptr, fptr, flen);
break;
case HTTP2_FRAME_GOAWAY :
Http2WatchGoAway (h2ptr, fptr, flen);
break;
case HTTP2_FRAME_WINDOW_UPDATE :
Http2WatchWindowUpdate (h2ptr, ident, fptr, flen);
break;
default :
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2, "FRAME error!");
}
}
/*****************************************************************************/
/*
*/
void Http2WatchData
(
HTTP2_STRUCT *h2ptr,
uint ident,
uint flags,
uchar *fptr,
uint flen,
uint blen
)
{
uint padlen;
/*********/
/* begin */
/*********/
if (WATCHMOD (h2ptr, WATCH_MOD_HTTP2))
{
if (flags & HTTP2_FLAG_DATA_PADDED)
HTTP2_GET_8 (fptr, padlen)
else
padlen = 0;
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"DATA padding:!UL length:!UL", padlen, flen - padlen);
/* dump only as many bytes as we have */
/// WatchDataDump (fptr, blen >= flen - padlen ? flen - padlen : blen);
}
}
/*****************************************************************************/
/*
*/
void Http2WatchGoAway
(
HTTP2_STRUCT *h2ptr,
uchar *fptr,
uint flen
)
{
uint addlen, lastid, error;
/*********/
/* begin */
/*********/
HTTP2_GET_32 (fptr, lastid);
lastid &= 0x7fffffff;
HTTP2_GET_32 (fptr, error);
addlen = flen - sizeof(uint) - sizeof(uint);
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"GOAWAY lastident:!UL error:!UL \"!AZ\"!AZ!#AZ!AZ",
lastid, error, Http2ErrorString(error),
addlen ? " \"" : "", addlen, fptr,
addlen ? "\"" : "");
}
/*****************************************************************************/
/*
*/
void Http2WatchHeaders
(
HTTP2_STRUCT *h2ptr,
uint ident,
uint flags,
uchar *fptr,
uint flen,
uint blen
)
{
uint hbflen,
padlen,
depend,
weight;
uchar *bptr;
/*********/
/* begin */
/*********/
if (WATCHMOD (h2ptr, WATCH_MOD_HTTP2))
{
bptr = fptr;
if (flags & HTTP2_FLAG_HEAD_PADDED)
HTTP2_GET_8 (fptr, padlen)
else
padlen = 0;
if (flags & HTTP2_FLAG_HEAD_PRIORITY)
{
HTTP2_GET_32 (fptr, depend)
HTTP2_GET_8 (fptr, weight)
}
else
depend = weight = 0;
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"HEADERS str:!&B end:!&B pad:!&B prio:!&B \
padding:!UL depend:!UL (ex:!&B) header:!UL (!UL)",
flags & HTTP2_FLAG_HEAD_END_STR,
flags & HTTP2_FLAG_HEAD_END_HEAD,
flags & HTTP2_FLAG_HEAD_PADDED,
flags & HTTP2_FLAG_HEAD_PRIORITY,
padlen, depend, depend & 0x80000000, flen - padlen, blen);
/* dump only as many bytes as we have */
WatchDataDump (fptr, blen >= flen - padlen ? flen - padlen : blen);
}
}
/*****************************************************************************/
/*
*/
void Http2WatchPing
(
HTTP2_STRUCT *h2ptr,
uchar *fptr,
uint flen
)
{
/*********/
/* begin */
/*********/
if (WATCHMOD (h2ptr, WATCH_MOD_HTTP2))
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"PING !2XL!2XL!2XL!2XL!2XL!2XL!2XL!2XL",
fptr[0],fptr[1],fptr[2],fptr[3],
fptr[4],fptr[5],fptr[6],fptr[7]);
}
/*****************************************************************************/
/*
*/
void Http2WatchPriority
(
HTTP2_STRUCT *h2ptr,
uint ident,
uchar *fptr,
uint flen
)
{
uint depend, weight;
/*********/
/* begin */
/*********/
HTTP2_GET_32 (fptr, depend)
HTTP2_GET_8 (fptr, weight)
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"PRIORITY depend:!UL (ex:!UL) weight:!UL",
depend & 0x7fffffff, depend & 0x80000000, weight+1);
}
/*****************************************************************************/
/*
*/
void Http2WatchPushPromise
(
HTTP2_STRUCT *h2ptr,
uint ident,
uint flags,
uchar *fptr,
uint flen
)
{
uint hbflen, padlen, promid;
/*********/
/* begin */
/*********/
if (flags & HTTP2_FLAG_DATA_PADDED)
HTTP2_GET_8 (fptr, padlen)
else
padlen = 0;
HTTP2_GET_32 (fptr, promid);
promid &= 0x7fffffff;
hbflen = flen - sizeof(uchar) - sizeof(uint) - sizeof(uchar) - padlen;
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"PUSH_PROMISE padding:!UL promid:!UL header:!UL",
padlen, promid, hbflen);
if (WATCHMOD (h2ptr, WATCH_MOD_HTTP2))
WatchData (fptr, hbflen);
}
/*****************************************************************************/
/*
*/
void Http2WatchRstStream
(
HTTP2_STRUCT *h2ptr,
uint ident,
uchar *fptr,
uint flen
)
{
uint error;
/*********/
/* begin */
/*********/
HTTP2_GET_32 (fptr, error);
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"RST_STREAM ident:!UL error:!UL \"!AZ\"",
ident, error, Http2ErrorString(error));
}
/*****************************************************************************/
/*
*/
void Http2WatchSettings
(
HTTP2_STRUCT *h2ptr,
uchar *csptr,
uchar *fptr,
uint flen
)
{
uint setting, value;
char *cptr;
/*********/
/* begin */
/*********/
for (;(int)flen >= 6; flen -= 6)
{
HTTP2_GET_16 (fptr, setting);
HTTP2_GET_32 (fptr, value);
switch (setting)
{
case HTTP2_SETTING_MAX_HEAD_TABLE_SIZE :
cptr = "header table size"; break;
case HTTP2_SETTING_ENABLE_PUSH :
cptr = "server push enabled"; break;
case HTTP2_SETTING_MAX_CONC_STREAMS :
cptr = "max concurrent streams"; break;
case HTTP2_SETTING_INIT_WIN_SIZE :
cptr = "initial window size"; break;
case HTTP2_SETTING_MAX_FRAME_SIZE :
cptr = "max frame size"; break;
case HTTP2_SETTING_MAX_HEAD_LIST_SIZE :
cptr = "max header list size"; break;
default : cptr = "(unknown)";
}
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"SETTING !AZ !AZ: !UL", csptr, cptr, value);
}
if (flen) WatchThis (WATCHITM(h2ptr), WATCH_HTTP2, "SETTING error!!");
}
/*****************************************************************************/
/*
*/
void Http2WatchWindowUpdate
(
HTTP2_STRUCT *h2ptr,
uint ident,
uchar *fptr,
uint flen
)
{
uint value;
/*********/
/* begin */
/*********/
HTTP2_GET_32 (fptr, value);
value &= 0x7fffffff;
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2,
"WINDOW_UPDATE ident:!UL value:!UL", ident, value);
}
/*****************************************************************************/
/*
*/
void Http2WatchError
(
HTTP2_STRUCT *h2ptr,
uint error
)
{
char *sptr;
/*********/
/* begin */
/*********/
if (error < HTTP2_ERROR_COUNT)
sptr = Http2ErrorArray[error];
else
sptr = "?";
WatchThis (WATCHITM(h2ptr), WATCH_HTTP2, "ERROR !UL !AZ", error, sptr);
}
/*****************************************************************************/