static verdict handle_icmp6(struct xlation *state, struct pkt_metadata const *meta)
{
union {
struct icmp6hdr icmp;
struct frag_hdr frag;
} buffer;
union {
struct icmp6hdr *icmp;
struct frag_hdr *frag;
} ptr;
verdict result;
ptr.icmp = skb_hdr_ptr(state->in.skb, meta->l4_offset, buffer.icmp);
if (!ptr.icmp)
return truncated(state, "ICMPv6 header");
if (has_inner_pkt6(ptr.icmp->icmp6_type)) {
result = validate_inner6(state, meta);
if (result != VERDICT_CONTINUE)
return result;
}
if (xlat_is_siit() && meta->has_frag_hdr && is_icmp6_info(ptr.icmp->icmp6_type)) {
ptr.frag = skb_hdr_ptr(state->in.skb, meta->frag_offset, buffer.frag);
if (!ptr.frag)
return truncated(state, "fragment header");
if (is_fragmented_ipv6(ptr.frag)) {
log_debug("Packet is a fragmented ping; its checksum cannot be translated.");
return drop(state, JSTAT_FRAGMENTED_PING);
}
}
return VERDICT_CONTINUE;
}
static IntPoint whirled(const Point& p, const Point& c, coord r,
const Angle& whirl)
{
const Angle angle = whirl * sq(1.0 - r);
coord sina = sin(angle);
coord cosa = cos(angle);
return IntPoint(truncated(cosa * p.x - sina * p.y + c.x),
truncated(sina * p.x + cosa * p.y + c.y));
}
static verdict validate_inner6(struct xlation *state,
struct pkt_metadata const *outer_meta)
{
union {
struct ipv6hdr ip6;
struct frag_hdr frag;
struct icmp6hdr icmp;
} buffer;
union {
struct ipv6hdr *ip6;
struct frag_hdr *frag;
struct icmp6hdr *icmp;
} ptr;
struct pkt_metadata meta;
verdict result;
ptr.ip6 = skb_hdr_ptr(state->in.skb, outer_meta->payload_offset,
buffer.ip6);
if (!ptr.ip6)
return truncated(state, "inner IPv6 header");
if (unlikely(ptr.ip6->version != 6))
return inhdr6(state, "Version is not 6.");
result = summarize_skb6(state, outer_meta->payload_offset, &meta);
if (result != VERDICT_CONTINUE)
return result;
if (meta.has_frag_hdr) {
ptr.frag = skb_hdr_ptr(state->in.skb, meta.frag_offset,
buffer.frag);
if (!ptr.frag)
return truncated(state, "inner fragment header");
if (!is_first_frag6(ptr.frag))
return inhdr6(state, "Inner packet is not a first fragment.");
}
if (meta.l4_proto == L4PROTO_ICMP) {
ptr.icmp = skb_hdr_ptr(state->in.skb, meta.l4_offset,
buffer.icmp);
if (!ptr.icmp)
return truncated(state, "inner ICMPv6 header");
if (has_inner_pkt6(ptr.icmp->icmp6_type))
return inhdr6(state, "Packet inside packet inside packet.");
}
if (!pskb_may_pull(state->in.skb, meta.payload_offset)) {
log_debug("Could not 'pull' the headers out of the skb.");
return truncated(state, "inner headers");
}
return VERDICT_CONTINUE;
}
static verdict validate_inner4(struct xlation *state, struct pkt_metadata *meta)
{
union {
struct iphdr ip4;
struct tcphdr tcp;
} buffer;
union {
struct iphdr *ip4;
struct tcphdr *tcp;
} ptr;
unsigned int ihl;
unsigned int offset = meta->payload_offset;
ptr.ip4 = skb_hdr_ptr(state->in.skb, offset, buffer.ip4);
if (!ptr.ip4)
return truncated(state, "inner IPv4 header");
ihl = ptr.ip4->ihl << 2;
if (ptr.ip4->version != 4)
return inhdr4(state, "Inner packet is not IPv4.");
if (ihl < 20)
return inhdr4(state, "Inner packet's IHL is bogus.");
if (ntohs(ptr.ip4->tot_len) < ihl)
return inhdr4(state, "Inner packet's total length is bogus.");
if (!is_first_frag4(ptr.ip4))
return inhdr4(state, "Inner packet is not first fragment.");
offset += ihl;
switch (ptr.ip4->protocol) {
case IPPROTO_TCP:
ptr.tcp = skb_hdr_ptr(state->in.skb, offset, buffer.tcp);
if (!ptr.tcp)
return truncated(state, "inner TCP header");
offset += tcp_hdr_len(ptr.tcp);
break;
case IPPROTO_UDP:
offset += sizeof(struct udphdr);
break;
case IPPROTO_ICMP:
offset += sizeof(struct icmphdr);
break;
}
if (!pskb_may_pull(state->in.skb, offset))
return truncated(state, "inner headers");
return VERDICT_CONTINUE;
}
// Draw
void
PropertyItemView::Draw(BRect updateRect)
{
const Property* property = GetProperty();
if (property && fParent) {
BRect b(Bounds());
// just draw background and label
rgb_color labelColor = LowColor();
if (fEnabled)
labelColor = tint_color(labelColor, B_DARKEN_MAX_TINT);
else
labelColor = tint_color(labelColor, B_DISABLED_LABEL_TINT);
SetHighColor(labelColor);
BFont font;
GetFont(&font);
BString truncated(name_for_id(property->Identifier()));
font.TruncateString(&truncated, B_TRUNCATE_MIDDLE, fLabelWidth - 10.0);
font_height fh;
font.GetHeight(&fh);
FillRect(BRect(b.left, b.top, b.left + fLabelWidth, b.bottom), B_SOLID_LOW);
DrawString(truncated.String(), BPoint(b.left + 5.0,
floorf(b.top + b.Height() / 2.0
+ fh.ascent / 2.0)));
// draw a "separator" line behind the label
SetHighColor(tint_color(LowColor(), B_DARKEN_1_TINT));
StrokeLine(BPoint(b.left + fLabelWidth - 1.0, b.top),
BPoint(b.left + fLabelWidth - 1.0, b.bottom), B_SOLID_HIGH);
}
}
std::string DirectoryIterator::truncate(const std::string & path)
{
std::string truncated(path);
while (truncated.find_last_of(g_sep) == truncated.size() - 1)
truncated = truncated.substr(0, truncated.find_last_of(g_sep));
return truncated;
}
verdict pkt_init_ipv6(struct xlation *state, struct sk_buff *skb)
{
struct pkt_metadata meta;
verdict result;
state->in.skb = skb;
/*
* DO NOT, UNDER ANY CIRCUMSTANCES, EXTRACT ANY BYTES FROM THE SKB'S
* DATA AREA DIRECTLY (ie. without using skb_hdr_ptr()) UNTIL YOU KNOW
* IT HAS ALREADY BEEN pskb_may_pull()ED. ASSUME THAT EVEN THE MAIN
* LAYER 3 HEADER CAN BE PAGED.
*
* Also, careful in this function and subfunctions. pskb_may_pull()
* might change pointers, so you generally don't want to store them.
*/
result = paranoid_validations(state, sizeof(struct ipv6hdr));
if (result != VERDICT_CONTINUE)
return result;
log_debug("Packet addresses: %pI6c->%pI6c",
&ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr);
if (skb->len != get_tot_len_ipv6(skb))
return inhdr6(state, "Packet size doesn't match the IPv6 header's payload length field.");
result = summarize_skb6(state, skb_network_offset(skb), &meta);
if (result != VERDICT_CONTINUE)
return result;
if (meta.l4_proto == L4PROTO_ICMP) {
/* Do not move this to summarize_skb6(), because it risks infinite recursion. */
result = handle_icmp6(state, &meta);
if (result != VERDICT_CONTINUE)
return result;
}
if (!pskb_may_pull(skb, meta.payload_offset))
return truncated(state, "headers");
state->in.l3_proto = L3PROTO_IPV6;
state->in.l4_proto = meta.l4_proto;
state->in.is_inner = 0;
state->in.is_hairpin = false;
state->in.hdr_frag = meta.has_frag_hdr
? skb_offset_to_ptr(skb, meta.frag_offset)
: NULL;
skb_set_transport_header(skb, meta.l4_offset);
state->in.payload = skb_offset_to_ptr(skb, meta.payload_offset);
state->in.original_pkt = &state->in;
return VERDICT_CONTINUE;
}
nsIAtom*
nsLanguageAtomService::GetLanguageGroup(nsIAtom *aLanguage,
nsresult *aError)
{
nsIAtom *retVal;
nsresult res = NS_OK;
retVal = mLangToGroup.GetWeak(aLanguage);
if (!retVal) {
if (!mLangGroups) {
if (NS_FAILED(InitLangGroupTable())) {
if (aError) {
*aError = NS_ERROR_FAILURE;
}
return nullptr;
}
}
nsString langStr;
aLanguage->ToString(langStr);
nsXPIDLString langGroupStr;
res = mLangGroups->GetStringFromName(langStr.get(),
getter_Copies(langGroupStr));
if (NS_FAILED(res)) {
int32_t hyphen = langStr.FindChar('-');
if (hyphen >= 0) {
nsAutoString truncated(langStr);
truncated.Truncate(hyphen);
res = mLangGroups->GetStringFromName(truncated.get(),
getter_Copies(langGroupStr));
if (NS_FAILED(res)) {
langGroupStr.AssignLiteral("x-unicode");
}
} else {
langGroupStr.AssignLiteral("x-unicode");
}
}
nsCOMPtr<nsIAtom> langGroup = do_GetAtom(langGroupStr);
// The hashtable will keep an owning reference to the atom
mLangToGroup.Put(aLanguage, langGroup);
retVal = langGroup.get();
}
if (aError) {
*aError = res;
}
return retVal;
}
// Draw
void
FontValueView::Draw(BRect updateRect)
{
BRect b(Bounds());
// focus indication
if (IsFocus()) {
SetHighColor(ui_color(B_KEYBOARD_NAVIGATION_COLOR));
StrokeRect(b);
b.InsetBy(1.0, 1.0);
BRegion clipping;
clipping.Include(b);
ConstrainClippingRegion(&clipping);
b.left --;
}
// background
FillRect(b, B_SOLID_LOW);
rgb_color labelColor = LowColor();
if (fEnabled)
labelColor = tint_color(labelColor, B_DARKEN_MAX_TINT);
else
labelColor = tint_color(labelColor, B_DISABLED_LABEL_TINT);
SetHighColor(labelColor);
b.InsetBy(2.0, 1.0);
float center = floorf(b.top + b.Height() / 2.0);
BPoint arrow[3];
arrow[0] = BPoint(b.left, center - 3.0);
arrow[1] = BPoint(b.left, center + 3.0);
arrow[2] = BPoint(b.left + 3.0, center);
FillPolygon(arrow, 3);
b.left += 6.0;
BFont font;
GetFont(&font);
font_height fh;
font.GetHeight(&fh);
BString truncated(fCurrentFont);
font.TruncateString(&truncated, B_TRUNCATE_END, b.Width());
DrawString(truncated.String(),
BPoint(b.left, floorf(center + fh.ascent / 2.0)));
}
static verdict paranoid_validations(struct xlation *state, size_t min_hdr_size)
{
verdict result;
result = fail_if_shared(state);
if (result != VERDICT_CONTINUE)
return result;
result = fail_if_broken_offset(state);
if (result != VERDICT_CONTINUE)
return result;
if (!pskb_may_pull(state->in.skb, min_hdr_size))
return truncated(state, "basic IP header");
return VERDICT_CONTINUE;
}
verdict pkt_init_ipv4(struct xlation *state, struct sk_buff *skb)
{
struct pkt_metadata meta;
verdict result;
state->in.skb = skb;
/*
* DO NOT, UNDER ANY CIRCUMSTANCES, EXTRACT ANY BYTES FROM THE SKB'S
* DATA AREA DIRECTLY (ie. without using skb_hdr_ptr()) UNTIL YOU KNOW
* IT HAS ALREADY BEEN pskb_may_pull()ED. ASSUME THAT EVEN THE MAIN
* LAYER 3 HEADER CAN BE PAGED.
*
* Also, careful in this function and subfunctions. pskb_may_pull()
* might change pointers, so you generally don't want to store them.
*/
result = paranoid_validations(state, sizeof(struct iphdr));
if (result != VERDICT_CONTINUE)
return result;
log_debug("Packet addresses: %pI4->%pI4",
&ip_hdr(skb)->saddr,
&ip_hdr(skb)->daddr);
result = summarize_skb4(state, &meta);
if (result != VERDICT_CONTINUE)
return result;
if (!pskb_may_pull(skb, meta.payload_offset)) {
log_debug("Could not 'pull' the headers out of the skb.");
return truncated(state, "headers");
}
state->in.l3_proto = L3PROTO_IPV4;
state->in.l4_proto = meta.l4_proto;
state->in.is_inner = false;
state->in.is_hairpin = false;
state->in.hdr_frag = NULL;
skb_set_transport_header(skb, meta.l4_offset);
state->in.payload = skb_offset_to_ptr(skb, meta.payload_offset);
state->in.original_pkt = &state->in;
return VERDICT_CONTINUE;
}
static verdict summarize_skb4(struct xlation *state, struct pkt_metadata *meta)
{
struct iphdr *hdr4 = ip_hdr(state->in.skb);
unsigned int offset;
hdr4 = ip_hdr(state->in.skb);
offset = skb_network_offset(state->in.skb) + (hdr4->ihl << 2);
meta->has_frag_hdr = false;
meta->l4_offset = offset;
meta->payload_offset = offset;
switch (hdr4->protocol) {
case IPPROTO_TCP:
meta->l4_proto = L4PROTO_TCP;
if (is_first_frag4(hdr4)) {
struct tcphdr buffer, *ptr;
ptr = skb_hdr_ptr(state->in.skb, offset, buffer);
if (!ptr)
return truncated(state, "TCP header");
meta->payload_offset += tcp_hdr_len(ptr);
}
return VERDICT_CONTINUE;
case IPPROTO_UDP:
meta->l4_proto = L4PROTO_UDP;
if (is_first_frag4(hdr4))
meta->payload_offset += sizeof(struct udphdr);
return VERDICT_CONTINUE;
case IPPROTO_ICMP:
meta->l4_proto = L4PROTO_ICMP;
if (is_first_frag4(hdr4))
meta->payload_offset += sizeof(struct icmphdr);
return handle_icmp4(state, meta);
}
meta->l4_proto = L4PROTO_OTHER;
return VERDICT_CONTINUE;
}
static verdict handle_icmp4(struct xlation *state, struct pkt_metadata *meta)
{
struct icmphdr buffer, *ptr;
verdict result;
ptr = skb_hdr_ptr(state->in.skb, meta->l4_offset, buffer);
if (!ptr)
return truncated(state, "ICMP header");
if (has_inner_pkt4(ptr->type)) {
result = validate_inner4(state, meta);
if (result != VERDICT_CONTINUE)
return result;
}
if (xlat_is_siit() && is_icmp4_info(ptr->type) && is_fragmented_ipv4(ip_hdr(state->in.skb))) {
log_debug("Packet is a fragmented ping; its checksum cannot be translated.");
return drop(state, JSTAT_FRAGMENTED_PING);
}
return VERDICT_CONTINUE;
}
void
ShowImageStatusView::Draw(BRect updateRect)
{
rgb_color darkShadow = tint_color(LowColor(), B_DARKEN_2_TINT);
rgb_color shadow = tint_color(LowColor(), B_DARKEN_1_TINT);
rgb_color light = tint_color(LowColor(), B_LIGHTEN_MAX_TINT);
BRect b(Bounds());
BeginLineArray(5);
AddLine(BPoint(b.left, b.top),
BPoint(b.right, b.top), darkShadow);
b.top += 1.0;
AddLine(BPoint(b.left, b.top),
BPoint(b.right, b.top), light);
AddLine(BPoint(b.right, b.top + 1.0),
BPoint(b.right, b.bottom), shadow);
AddLine(BPoint(b.right - 1.0, b.bottom),
BPoint(b.left + 1.0, b.bottom), shadow);
AddLine(BPoint(b.left, b.bottom),
BPoint(b.left, b.top + 1.0), light);
EndLineArray();
b.InsetBy(1.0, 1.0);
// Truncate and layout text
BString truncated(fText);
BFont font;
GetFont(&font);
font.TruncateString(&truncated, B_TRUNCATE_MIDDLE, b.Width() - 4.0);
font_height fh;
font.GetHeight(&fh);
FillRect(b, B_SOLID_LOW);
SetDrawingMode(B_OP_OVER);
DrawString(truncated.String(), BPoint(b.left + 2.0,
floorf(b.top + b.Height() / 2.0 + fh.ascent / 2.0)));
}
static void
vitrunc(void)
{
truncated(vision_name);
}
int QDeclarativeText::qt_metacall(QMetaObject::Call _c, int _id, void **_a)
{
_id = QDeclarativeImplicitSizeItem::qt_metacall(_c, _id, _a);
if (_id < 0)
return _id;
if (_c == QMetaObject::InvokeMetaMethod) {
if (_id < 17)
qt_static_metacall(this, _c, _id, _a);
_id -= 17;
}
#ifndef QT_NO_PROPERTIES
else if (_c == QMetaObject::ReadProperty) {
void *_v = _a[0];
switch (_id) {
case 0: *reinterpret_cast< QString*>(_v) = text(); break;
case 1: *reinterpret_cast< QFont*>(_v) = font(); break;
case 2: *reinterpret_cast< QColor*>(_v) = color(); break;
case 3: *reinterpret_cast< TextStyle*>(_v) = style(); break;
case 4: *reinterpret_cast< QColor*>(_v) = styleColor(); break;
case 5: *reinterpret_cast< HAlignment*>(_v) = hAlign(); break;
case 6: *reinterpret_cast< VAlignment*>(_v) = vAlign(); break;
case 7: *reinterpret_cast< WrapMode*>(_v) = wrapMode(); break;
case 8: *reinterpret_cast< int*>(_v) = lineCount(); break;
case 9: *reinterpret_cast< bool*>(_v) = truncated(); break;
case 10: *reinterpret_cast< int*>(_v) = maximumLineCount(); break;
case 11: *reinterpret_cast< TextFormat*>(_v) = textFormat(); break;
case 12: *reinterpret_cast< TextElideMode*>(_v) = elideMode(); break;
case 13: *reinterpret_cast< qreal*>(_v) = paintedWidth(); break;
case 14: *reinterpret_cast< qreal*>(_v) = paintedHeight(); break;
case 15: *reinterpret_cast< qreal*>(_v) = lineHeight(); break;
case 16: *reinterpret_cast< LineHeightMode*>(_v) = lineHeightMode(); break;
}
_id -= 17;
} else if (_c == QMetaObject::WriteProperty) {
void *_v = _a[0];
switch (_id) {
case 0: setText(*reinterpret_cast< QString*>(_v)); break;
case 1: setFont(*reinterpret_cast< QFont*>(_v)); break;
case 2: setColor(*reinterpret_cast< QColor*>(_v)); break;
case 3: setStyle(*reinterpret_cast< TextStyle*>(_v)); break;
case 4: setStyleColor(*reinterpret_cast< QColor*>(_v)); break;
case 5: setHAlign(*reinterpret_cast< HAlignment*>(_v)); break;
case 6: setVAlign(*reinterpret_cast< VAlignment*>(_v)); break;
case 7: setWrapMode(*reinterpret_cast< WrapMode*>(_v)); break;
case 10: setMaximumLineCount(*reinterpret_cast< int*>(_v)); break;
case 11: setTextFormat(*reinterpret_cast< TextFormat*>(_v)); break;
case 12: setElideMode(*reinterpret_cast< TextElideMode*>(_v)); break;
case 15: setLineHeight(*reinterpret_cast< qreal*>(_v)); break;
case 16: setLineHeightMode(*reinterpret_cast< LineHeightMode*>(_v)); break;
}
_id -= 17;
} else if (_c == QMetaObject::ResetProperty) {
switch (_id) {
case 5: resetHAlign(); break;
case 10: resetMaximumLineCount(); break;
}
_id -= 17;
} else if (_c == QMetaObject::QueryPropertyDesignable) {
_id -= 17;
} else if (_c == QMetaObject::QueryPropertyScriptable) {
_id -= 17;
} else if (_c == QMetaObject::QueryPropertyStored) {
_id -= 17;
} else if (_c == QMetaObject::QueryPropertyEditable) {
_id -= 17;
} else if (_c == QMetaObject::QueryPropertyUser) {
_id -= 17;
}
#endif // QT_NO_PROPERTIES
return _id;
}
void *load_exe(char *filename, Exe_head *eh)
{
long retval;
char *alligned_buf;
char *alloc_buf = NULL;
long (*rfunc)();
unsigned long code_offset;
unsigned long init_size;
unsigned long bss_size;
unsigned long total_size;
void *v;
unsigned long fixup_offset;
UWORD fixup[2];
UWORD *segpt;
UWORD code_seg;
int f;
unsigned i;
int ok = 0;
if ((f = jopen(filename, JREADONLY)) == 0)
{
cant_find(filename);
return(NULL);
}
if (!verify_exe_head(f, eh))
goto OUT;
code_offset = eh->head_size;
code_offset *= 16; /* make it a paragraph */
init_size = eh->blocks;
init_size *= 512;
init_size += eh->mod512;
if (eh->mod512 != 0)
init_size -= 512;
init_size -= code_offset;
bss_size = eh->min_data;
bss_size *= 16;
total_size = init_size + bss_size;
if ((alloc_buf = begmem((unsigned)total_size+16)) == NULL)
goto OUT;
code_seg = ptr_seg(alloc_buf) + 1;
alligned_buf = make_ptr(0, code_seg);
zero_structure(alligned_buf, (unsigned)total_size);
jseek(f, code_offset, JSEEK_START);
if (jread(f, alligned_buf, init_size) < init_size)
{
truncated(filename);
goto OUT;
}
v = alligned_buf;
eh->entry_point = v;
if (eh->reloc_count > 0)
{
fixup_offset = eh->reloc_list;
jseek(f, fixup_offset, JSEEK_START);
for (i=0; i<eh->reloc_count; i++)
{
if (jread(f, fixup, sizeof(fixup)) != sizeof(fixup))
{
truncated(filename);
goto OUT;
}
segpt = make_ptr(fixup[0], code_seg + fixup[1]);
segpt[0] += code_seg;
}
}
ok = 1;
OUT:
if (!ok)
{
gentle_freemem(alloc_buf);
alloc_buf = NULL;
}
jclose(f);
return(alloc_buf);
}
static
truncm()
{
truncated(mac_name);
}
/**
* Walks through @skb's headers, collecting data and adding it to @meta.
*
* @hdr6_offset number of bytes between skb->data and the IPv6 header.
*
* BTW: You might want to read summarize_skb4() first, since it's a lot simpler.
*/
static verdict summarize_skb6(struct xlation *state,
unsigned int hdr6_offset,
struct pkt_metadata *meta)
{
union {
struct ipv6_opt_hdr opt;
struct frag_hdr frag;
struct tcphdr tcp;
} buffer;
union {
struct ipv6_opt_hdr *opt;
struct frag_hdr *frag;
struct tcphdr *tcp;
u8 *nexthdr;
} ptr;
struct sk_buff *skb = state->in.skb;
u8 nexthdr;
unsigned int offset;
bool is_first = true;
ptr.nexthdr = skb_hdr_ptr(skb,
hdr6_offset + offsetof(struct ipv6hdr, nexthdr),
nexthdr);
if (!ptr.nexthdr)
return truncated(state, "IPv6 header");
nexthdr = *ptr.nexthdr;
offset = hdr6_offset + sizeof(struct ipv6hdr);
meta->has_frag_hdr = false;
do {
switch (nexthdr) {
case NEXTHDR_TCP:
meta->l4_proto = L4PROTO_TCP;
meta->l4_offset = offset;
meta->payload_offset = offset;
if (is_first) {
ptr.tcp = skb_hdr_ptr(skb, offset, buffer.tcp);
if (!ptr.tcp)
return truncated(state, "TCP header");
meta->payload_offset += tcp_hdr_len(ptr.tcp);
}
return VERDICT_CONTINUE;
case NEXTHDR_UDP:
meta->l4_proto = L4PROTO_UDP;
meta->l4_offset = offset;
meta->payload_offset = is_first
? (offset + sizeof(struct udphdr))
: offset;
return VERDICT_CONTINUE;
case NEXTHDR_ICMP:
meta->l4_proto = L4PROTO_ICMP;
meta->l4_offset = offset;
meta->payload_offset = is_first
? (offset + sizeof(struct icmp6hdr))
: offset;
return VERDICT_CONTINUE;
case NEXTHDR_FRAGMENT:
ptr.frag = skb_hdr_ptr(skb, offset, buffer.frag);
if (!ptr.frag)
return truncated(state, "fragment header");
meta->has_frag_hdr = true;
meta->frag_offset = offset;
is_first = is_first_frag6(ptr.frag);
offset += sizeof(struct frag_hdr);
nexthdr = ptr.frag->nexthdr;
break;
case NEXTHDR_HOP:
case NEXTHDR_ROUTING:
case NEXTHDR_DEST:
ptr.opt = skb_hdr_ptr(skb, offset, buffer.opt);
if (!ptr.opt)
return truncated(state, "extension header");
offset += ipv6_optlen(ptr.opt);
nexthdr = ptr.opt->nexthdr;
break;
default:
meta->l4_proto = L4PROTO_OTHER;
meta->l4_offset = offset;
meta->payload_offset = offset;
return VERDICT_CONTINUE;
}
} while (true);
return VERDICT_CONTINUE; /* whatever. */
}
int main(int argc ,char* argv[])
{
if(argc<3) {
printf("hostname and recode type required");
exit(0);
}
signal(SIGALRM,ha);
struct sockaddr_in servaddr;
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family= AF_INET;
servaddr.sin_port =htons( SERV_PORT);
servaddr.sin_addr.s_addr = inet_addr(addr);
int sock = socket(AF_INET,SOCK_DGRAM,0);
if(sock<0) errExit("socket");
Msg msg;
bzero(&msg, sizeof(msg));
msg.header.id = htons(1);
msg.header.noques = htons(1);
msg.qtype=htons(findType(argv[2]));
msg.qclass=htons(1);
char delim[2] = ".";
char *label;
int i=0;
label = strtok(argv[1], delim);
while( label!= NULL )
{
msg.question[i].length = strlen(label);
memcpy(msg.question[i].label,label,strlen(label));
i++;
label = strtok(NULL, delim);
}
msg.question[i].length=0;
char* udp_msg = (char*)malloc(512*sizeof(char));
char* udp_temp = udp_msg;
bzero(udp_msg, 512);
memcpy(udp_temp,&msg.header.id,2);
udp_temp += 2;
memcpy(udp_temp,(char*)&msg.header.param,2);
udp_temp += 2;
memcpy(udp_temp,(char*)&msg.header.noques,2);
udp_temp += 2;
memcpy(udp_temp,(char*)&msg.header.noans,2);
udp_temp += 2;
memcpy(udp_temp,(char*)&msg.header.noauth,2);
udp_temp += 2;
memcpy(udp_temp,(char*)&msg.header.noadd,2);
udp_temp += 2;
int m = 0;
while(msg.question[m].length != 0){
memcpy(udp_temp,(char*)&msg.question[m].length,1);
udp_temp += 1;
memcpy(udp_temp,msg.question[m].label,strlen(msg.question[m].label));
udp_temp += strlen(msg.question[m].label);
m++;
}
*udp_temp = 0;
udp_temp += 1;
memcpy(udp_temp,(char*)&msg.qtype,2);
udp_temp += 2;
memcpy(udp_temp,(char*)&msg.qclass,2);
udp_temp += 2;
*udp_temp = '\0';
int answer_offset=udp_temp-udp_msg;
char recvline[513];
while(1){
printf("MSG TO BE SENT:\n");
printQuestionSection(udp_msg);
printf("\nSending to server \n");
printf("Trying %s.....\n",inet_ntoa(servaddr.sin_addr));
alarm(5);
if(sendto(sock,udp_msg,512,0,(struct sockaddr*) &servaddr,sizeof(servaddr)) < 0)
errExit("sendto");
alarm(0);
int n;
alarm(5);
if((n = recvfrom(sock,recvline,512,0,NULL,NULL)) < 0)
errExit("recvfrom");
alarm(0);
recvline[n] = '\0';
printf("MSG RECIEVED:\n");
printQuestionSection(recvline);
char* newAddr= printAnswerSection(recvline,answer_offset);
printf("\n******************************************************************************************\n");
char* temp= recvline+2;
if((*temp) & (uint8_t)0x04)
{
printf("Got authoritative answer\n");
exit(0);
}
else
{
if(truncated(recvline))
{
printf("Truncated msg, exiting\n");
exit(0);
}
if(error(recvline) || newAddr==NULL)
{
setjmp(env);
canjmp=1;
if(cur<0)
exit(0);
else
{
newAddr = ipaddresses[cur];
cur--;
num--;
}
}
servaddr.sin_addr.s_addr= *((int32_t*) newAddr);
}
}
return 0;
}
