/* Clear central directory data about a single file */
static int
clear_one_cd_file(unsigned char **p1, off_t *p2)
{
unsigned char *data;
off_t size_left;
struct cd_file h;
size_t len;
int is_zip64;
data = *p1;
size_left = *p2;
memcpy(&h, data, sizeof(h));
memset(h.mtime, 0, sizeof(h.mtime));
memset(h.mdate, 0, sizeof(h.mdate));
memcpy(data, &h, sizeof(h));
ADVANCE(sizeof(h));
len = get_u16(h.name_length);
ADVANCE(len);
if (clear_file_extra(&data, &size_left, get_u16(h.extra_length), &is_zip64,
NULL) != 0)
return -1;
len = get_u16(h.comment_length);
ADVANCE(len);
*p1 = data;
*p2 = size_left;
return 0;
}
static const char *
next_patt(register const char *pattern, int advance)
{
wchar_t __nlh_char[1];
if (CHARAT(pattern) == '[')
{
int ch;
const char *pp = pattern;
ADVANCE(pp);
if (CHARAT(pp) == '^')
ADVANCE(pp);
if (CHARAT(pp) == ']')
ADVANCE(pp);
char const *np;
for (; (ch = next_char(pp, &np)) != '\0'; pp = np)
if (ch == ']')
return (advance ? np : pp);
}
next_char(pattern, &pattern);
return pattern;
}
/* RFC 3579 */
int radius_put_message_authenticator(RADIUS_PACKET *packet, const char *secret)
{
int rval;
u_char md5result[16];
RADIUS_ATTRIBUTE* attr;
RADIUS_ATTRIBUTE* end;
if ((rval = radius_put_raw_attr(packet,
RADIUS_TYPE_MESSAGE_AUTHENTICATOR, md5result, sizeof(md5result)))
!= 0)
return rval;
radius_hmac_md5(packet, secret, strlen(secret), (caddr_t)md5result, 0);
attr = ATTRS_BEGIN(packet->pdata);
end = ATTRS_END(packet->pdata);
for(; attr<end; ADVANCE(attr))
{
if (attr->type == RADIUS_TYPE_MESSAGE_AUTHENTICATOR)
{
memcpy(attr->data, md5result, sizeof(md5result));
break;
}
}
return 0;
}
/* Compare central directory data about a single file */
static int
cmp_one_cd_file(const unsigned char **p1, const unsigned char **p2, off_t *p3)
{
const unsigned char *data1, *data2;
off_t size_left;
struct cd_file h1, h2;
size_t len;
enum result res;
int is_zip64;
data1 = *p1;
data2 = *p2;
size_left = *p3;
memcpy(&h1, data1, sizeof(h1));
memcpy(&h2, data2, sizeof(h2));
ADVANCE(sizeof(h1));
memset(h1.mtime, 0, sizeof(h1.mtime));
memset(h2.mtime, 0, sizeof(h2.mtime));
memset(h1.mdate, 0, sizeof(h1.mdate));
memset(h2.mdate, 0, sizeof(h2.mdate));
if (memcmp(&h1, &h2, sizeof(h1)) != 0)
return RES_DIFFERENT;
len = get_u16(h1.name_length);
COMPARE_AND_ADVANCE(len);
res = cmp_file_extra(&data1, &data2, &size_left, get_u16(h1.extra_length),
&is_zip64, NULL);
if (res != RES_SAME)
return res;
len = get_u16(h1.comment_length);
COMPARE_AND_ADVANCE(len);
*p1 = data1;
*p2 = data2;
*p3 = size_left;
return RES_SAME;
}
/*
* To determine the length of the data, set the buf = NULL.
*/
int radius_get_vs_raw_attr_all(const RADIUS_PACKET* packet, u_int32_t vendor,
u_int8_t vtype, caddr_t buf, int *length)
{
int off;
const RADIUS_ATTRIBUTE* attr;
const RADIUS_ATTRIBUTE* end;
attr = ATTRS_BEGIN(packet->pdata);
end = ATTRS_END(packet->pdata);
off = 0;
for(; attr<end; ADVANCE(attr))
{
if(attr->type != RADIUS_TYPE_VENDOR_SPECIFIC)
continue;
if(attr->vendor != htonl(vendor))
continue;
if(attr->vtype != vtype)
continue;
if (buf != NULL) {
if (off + attr->vlength - 2 <= *length)
memcpy(off + buf, attr->vdata,
attr->vlength - 2);
else
return 1;
}
off += attr->vlength;
}
*length = off;
return 0;
}
void dbg_history_dump(char *key)
{
int cnt;
char *buf;
struct head *p;
if(history_length)
{
fprintf(stderr, "***** %s:%lu: history dump start\n", dbg_file_name, dbg_line_number);
if(histp->addr)
{
cnt = history_length;
p = histp;
}
else
{
cnt = histp - hist_base;
p = hist_base;
}
while(cnt--)
{
buf = malloc(strlen(p->file) + strlen(p->in.free.file) + 3*length(long) + 30);
sprintf(buf, "(alloc: %s:%lu size: %lu free: %s:%lu)\n",
p->file, p->line, (unsigned long)p->size, p->in.free.file, p->in.free.line);
if(strstr(buf, key)) fputs(buf, stderr);
free(buf);
ADVANCE(p);
}
fprintf(stderr, "***** %s:%lu: history dump end\n", dbg_file_name, dbg_line_number);
}
}
int radius_get_vs_raw_attr_ptr(const RADIUS_PACKET* packet, u_int32_t vendor,
u_int8_t vtype, void** ptr, u_int8_t* length)
{
const RADIUS_ATTRIBUTE* attr;
const RADIUS_ATTRIBUTE* end;
attr = ATTRS_BEGIN(packet->pdata);
end = ATTRS_END(packet->pdata);
for(; attr<end; ADVANCE(attr))
{
if(attr->type != RADIUS_TYPE_VENDOR_SPECIFIC)
continue;
if(attr->vendor != htonl(vendor))
continue;
if(attr->vtype != vtype)
continue;
*length = attr->vlength - 2;
*ptr = (void *)attr->vdata;
return 0;
}
return 1;
}
static int radius_check_packet_data(const RADIUS_PACKET_DATA* pdata,
size_t length)
{
const RADIUS_ATTRIBUTE* attr;
const RADIUS_ATTRIBUTE* end;
if(length < sizeof(RADIUS_PACKET_DATA))
return 1;
if(length > 0xffff)
return 1;
if(length != (size_t)ntohs(pdata->length))
return 1;
attr = ATTRS_BEGIN(pdata);
end = ATTRS_END(pdata);
for(; attr<end; ADVANCE(attr))
{
if(attr->length < 2)
return 1;
if(attr->type == RADIUS_TYPE_VENDOR_SPECIFIC)
{
if(attr->length < 8)
return 1;
if((attr->vendor & htonl(0xff000000U)) != 0)
return 1;
if(attr->length != attr->vlength + 6)
return 1;
}
}
if(attr != end)
return 1;
return 0;
}
void dbg_history_dump(char *key)
{
int cnt;
char buf[80];
struct head *p;
if(history_length)
{
fprintf(stderr, "***** %s:%u: history dump start\n", dbg_file_name, dbg_line_number);
if(histp->addr)
{
cnt = history_length;
p = histp;
}
else
{
cnt = histp - hist_base;
p = hist_base;
}
while(cnt--)
{
snprintf(buf, 80, "(alloc: %s:%u size: %lu free: %s:%u)\n",
p->file, p->line, (unsigned long)p->size, p->free.file, p->free.line);
ADVANCE(p);
if(strstr(buf, key)) fputs(buf, stderr);
}
fprintf(stderr, "***** %s:%u: history dump end\n", dbg_file_name, dbg_line_number);
}
}
/*
* To determine the length of the data, set the buf = NULL.
*/
int radius_get_raw_attr_all(const RADIUS_PACKET* packet, u_int8_t type,
caddr_t buf, int *length)
{
int off;
const RADIUS_ATTRIBUTE* attr;
const RADIUS_ATTRIBUTE* end;
attr = ATTRS_BEGIN(packet->pdata);
end = ATTRS_END(packet->pdata);
for(off = 0; attr<end; ADVANCE(attr))
{
if(attr->type != type)
continue;
if (buf != NULL) {
if (off + attr->length - 2 <= *length)
memcpy(buf + off, attr->data, attr->length - 2);
else
return 1;
}
off += attr->length - 2;
}
*length = off;
return 0;
}
/* NOTE: This functions record the fact that it has read to the end of
* the buffer by setting the position to *beyond* the end of the
* buffer. */
static int
parse_next_atom(struct simple_buffer *buffer, enum lsh_atom *result)
{
uint32_t i;
assert (buffer->pos <=buffer->capacity);
for(i = 0; i < LEFT; i++)
{
if (HERE[i] == ',')
break;
if (i == 64)
/* Atoms can be no larger than 64 characters */
return 0;
}
/* NOTE: ssh-2.0.13, server string "SSH-1.99-2.0.13
* (non-commercial)", sends USERAUTH_FAILURE messages with strings
* like "publickey,password,". It's not entirely clear to me if that
* is allowed for the spec, but it seems safe and straightforward to
* treat empty atoms as any other unknown atom. */
if (!i)
{
verbose("parse_next_atom: Received an empty atom.\n");
/* Treat empty atoms as unknown */
*result = 0;
}
else
*result = lookup_atom(i, HERE);
ADVANCE(i+1); /* If the atom was terminated at the end of the
* buffer, rather than by a comma, this points beyond
* the end of the buffer */
return 1;
}
int
parse_boolean(struct simple_buffer *buffer, int *result)
{
if (!LEFT)
return 0;
*result = HERE[0];
ADVANCE(1);
return 1;
}
void
parse_rest(struct simple_buffer *buffer,
uint32_t *length, const uint8_t **start)
{
*length = LEFT;
*start = HERE;
ADVANCE(*length);
}
/* NOTE: This is used in one single place: For copying the cookie in
received KEYEXCHANGE_INIT messages. */
int
parse_octets(struct simple_buffer *buffer,
uint32_t length, uint8_t *start)
{
if (LEFT < length)
return 0;
memcpy(start, HERE, length);
ADVANCE(length);
return 1;
}
int
parse_uint32(struct simple_buffer *buffer, uint32_t *result)
{
if (LEFT < 4)
return 0;
*result = READ_UINT32(HERE);
ADVANCE(4);
return 1;
}
/* Used by client_x11.c, for parsing xauth */
int
parse_uint16(struct simple_buffer *buffer, uint32_t *result)
{
if (LEFT < 2)
return 0;
*result = READ_UINT16(HERE);
ADVANCE(2);
return 1;
}
int
parse_uint8(struct simple_buffer *buffer, unsigned *result)
{
if (!LEFT)
return 0;
*result = HERE[0];
ADVANCE(1);
return 1;
}
void
conf_print_rtm(FILE *output, struct rt_msghdr *rtm, char *delim, int af)
{
int i;
char *cp, flags[64];
struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
struct sockaddr *sa;
struct sockaddr_in sin;
sin.sin_addr.s_addr = htonl(INADDR_BROADCAST);
cp = ((char *)rtm + rtm->rtm_hdrlen);
for (i = 1; i; i <<= 1)
if (i & rtm->rtm_addrs) {
sa = (struct sockaddr *)cp;
switch (i) {
case RTA_DST:
/* allow arp to get printed with af==AF_LINK */
if ((sa->sa_family == af) ||
(af == AF_LINK && sa->sa_family == AF_INET)) {
if (rtm->rtm_flags & RTF_REJECT)
snprintf(flags, sizeof(flags),
" reject");
else
flags[0] = '\0';
dst = sa;
}
break;
case RTA_GATEWAY:
if (sa->sa_family == af)
gate = sa;
break;
case RTA_NETMASK:
/* netmasks will not have a valid sa_family */
mask = sa;
break;
}
ADVANCE(cp, sa);
}
if (dst && gate && mask && (af == AF_INET || af == AF_INET6)) {
/*
* Suppress printing IPv4 route if it's the default
* route and dhcp (dhclient) is enabled.
*/
if (!(af == AF_INET && isdefaultroute(dst, mask)
&& dhclient_isenabled(routename(gate)))) {
fprintf(output, "%s%s ", delim, netname(dst, mask));
fprintf(output, "%s%s\n", routename(gate), flags);
}
} else if (dst && gate && (af == AF_LINK)) {
/* print arp */
fprintf(output, "%s%s ", delim, routename(dst));
fprintf(output, "%s\n", routename(gate));
}
}
static void __interrupt __far kbintr()
{
unsigned char code;
int key, press;
code = inp(KB_PORT);
if(code >= 128) {
press = 0;
code -= 128;
if(num_pressed > 0) {
num_pressed--;
}
} else {
press = 1;
num_pressed++;
}
key = scantbl[code];
if(press) {
/* append to buffer */
last_key = key;
if(buffer_size > 0) {
buffer[buf_widx] = key;
ADVANCE(buf_widx);
/* if the write end overtook the read end, advance the read end
* too, to discard the oldest keypress from the buffer
*/
if(buf_widx == buf_ridx) {
ADVANCE(buf_ridx);
}
}
}
/* and update keystate table */
keystate[key] = press;
outp(PIC1_CMD_PORT, OCW2_EOI); /* send end-of-interrupt */
}
struct lsh_string *
parse_rest_copy(struct simple_buffer *buffer)
{
uint32_t length = LEFT;
struct lsh_string *s = ssh_format("%ls", length, HERE);
ADVANCE(length);
assert(!LEFT);
return s;
}
/* Clear per-file extra data;
Update compressed_size if it is not NULL, otherwise assume compressed_size
is not present in the zip64 header. */
static int
clear_file_extra(unsigned char **p1, off_t *p2, size_t extra_len, int *is_zip64,
unsigned long long *compressed_size)
{
unsigned char *data;
off_t size_left;
data = *p1;
size_left = *p2;
while (extra_len >= sizeof(struct extra_header)) {
struct extra_header eh;
size_t len;
memcpy(&eh, data, sizeof(eh));
ADVANCE(sizeof(eh));
len = get_u16(eh.data_size);
if (extra_len < sizeof(eh) + len)
return -1;
extra_len -= sizeof(eh) + len;
if (memcmp(eh.id, eh_id_zip64, sizeof(eh_id_zip64)) == 0) {
*is_zip64 = 1;
if (compressed_size != NULL)
*compressed_size = get_u64(data + 8);
ADVANCE(len);
} else if (memcmp(eh.id, eh_id_ext_timestamp,
sizeof(eh_id_ext_timestamp)) == 0) {
if (len < 1)
return -1;
ADVANCE(1); /* Time presence flags */
memset(data, 0, len - 1); /* mtime, atime, ctime - if present */
ADVANCE(len - 1);
} else
ADVANCE(len);
}
if (extra_len != 0)
return -1;
*p1 = data;
*p2 = size_left;
return 0;
}
static void
rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo)
{
struct sockaddr *sa;
int i;
memset(rtinfo->rti_info, 0, sizeof(rtinfo->rti_info));
for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
if ((rtinfo->rti_addrs & (1 << i)) == 0)
continue;
rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
ADVANCE(cp, sa);
}
}
/*
* Extract addresses from the given buffer
*/
void
xaddress(const int rti_addrs, char *cp, char *cplim, struct rt_addrinfo *rtinfo)
{
register struct sockaddr *sa;
register int i;
bzero((char *)rtinfo, sizeof(struct rt_addrinfo));
for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
if ((rti_addrs & (1 << i)) == 0)
continue;
rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
ADVANCE(cp, sa);
}
}
void extractAddresses(int iAddrMask, caddr_t cp, caddr_t cplim, struct sockaddr **pAddresses)
{
struct sockaddr *sa;
for (int i = 0; i < RTAX_MAX && cp < cplim; i++) {
if (!(iAddrMask & (1 << i)))
continue;
sa = (struct sockaddr *)cp;
pAddresses[i] = sa;
ADVANCE(cp, sa);
}
}
int kb_getkey(void)
{
int res;
if(buffer) {
if(buf_ridx == buf_widx) {
return -1;
}
res = buffer[buf_ridx];
ADVANCE(buf_ridx);
} else {
res = last_key;
last_key = -1;
}
return res;
}
int
parse_string(struct simple_buffer *buffer,
uint32_t *length, const uint8_t **start)
{
uint32_t l;
if (!parse_uint32(buffer, &l))
return 0;
if (LEFT < l)
return 0;
*length = l;
*start = HERE;
ADVANCE(l);
return 1;
}
void
conf_print_rtm(FILE *output, struct rt_msghdr *rtm, char *delim, int af)
{
int i;
char *cp;
struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL;
struct sockaddr *sa;
cp = ((char *)rtm + rtm->rtm_hdrlen);
for (i = 1; i; i <<= 1)
if (i & rtm->rtm_addrs) {
sa = (struct sockaddr *)cp;
switch (i) {
case RTA_DST:
/* allow arp to get printed with af==AF_LINK */
if ((sa->sa_family == af) ||
(af == AF_LINK && sa->sa_family == AF_INET))
dst = sa;
break;
case RTA_GATEWAY:
if (sa->sa_family == af)
gate = sa;
break;
case RTA_NETMASK:
/* netmasks will not have a valid sa_family */
mask = sa;
break;
}
ADVANCE(cp, sa);
}
if (dst && mask && gate && (af == AF_INET || af == AF_INET6)) {
/*
* suppress printing IP route if it's the default
* v4 route and dhcp (dhclient) is enabled
*/
if (!(isdefaultroute4(dst) && dhclient_isenabled(routename(gate)))) {
fprintf(output, "%s%s ", delim, netname(dst, mask));
fprintf(output, "%s\n", routename(gate));
}
} else
if (dst && gate && (af == AF_LINK))
/* print arp */
fprintf(output, "%s%s %s\n", delim, routename(dst),
routename(gate));
}
static void
get_addrs(int type, char *cp, struct sockaddr **sa)
{
int i;
for (i = 0; i < RTAX_MAX; i++) {
if (type & (1 << i)) {
sa[i] = (struct sockaddr *)cp;
#ifdef DEBUG
printf ("got %d %d %s\n", i, sa[i]->sa_family,
inet_ntoa(((struct sockaddr_in *)sa[i])->
sin_addr));
#endif
ADVANCE(cp, sa[i]);
} else
sa[i] = NULL;
}
}
/* Compare per-file extra data;
Update compressed_size if it is not NULL, otherwise assume compressed_size
is not present in the zip64 header. */
static enum result
cmp_file_extra(const unsigned char **p1, const unsigned char **p2, off_t *p3,
size_t extra_len, int *is_zip64,
unsigned long long *compressed_size)
{
const unsigned char *data1, *data2;
off_t size_left;
data1 = *p1;
data2 = *p2;
size_left = *p3;
while (extra_len >= sizeof(struct extra_header)) {
struct extra_header eh;
size_t len;
memcpy(&eh, data1, sizeof(eh));
COMPARE_AND_ADVANCE(sizeof(eh));
len = get_u16(eh.data_size);
if (extra_len < sizeof(eh) + len)
return RES_UNKNOWN;
extra_len -= sizeof(eh) + len;
if (memcmp(eh.id, eh_id_zip64, sizeof(eh_id_zip64)) == 0) {
*is_zip64 = 1;
if (compressed_size != NULL)
*compressed_size = get_u64(data1 + 8);
COMPARE_AND_ADVANCE(len);
} else if (memcmp(eh.id, eh_id_ext_timestamp,
sizeof(eh_id_ext_timestamp)) == 0) {
if (len < 1)
return RES_UNKNOWN;
COMPARE_AND_ADVANCE(1); /* Time presence flags */
ADVANCE(len - 1); /* mtime, atime, ctime - if present */
} else
COMPARE_AND_ADVANCE(len);
}
if (extra_len != 0)
return RES_UNKNOWN;
*p1 = data1;
*p2 = data2;
*p3 = size_left;
return RES_SAME;
}
int radius_get_raw_attr(const RADIUS_PACKET* packet, u_int8_t type,
void* buf, u_int8_t* length)
{
const RADIUS_ATTRIBUTE* attr;
const RADIUS_ATTRIBUTE* end;
attr = ATTRS_BEGIN(packet->pdata);
end = ATTRS_END(packet->pdata);
for(; attr<end; ADVANCE(attr))
{
if(attr->type != type)
continue;
*length = attr->length - 2;
memcpy(buf, attr->data, attr->length - 2);
return 0;
}
return 1;
}
