void
one_domain_valid()
{
int ret;
struct packet p;
struct option_data *option;
char *data = "\007example\003org\0";
char *expected = "example.org.";
option = &p.options[DHO_DOMAIN_SEARCH];
option->len = 13;
option->data = malloc(option->len);
memcpy(option->data, data, option->len);
ret = setjmp(env);
if (ret == 0)
expand_domain_search(&p);
if (option->len != strlen(expected) ||
strcmp(option->data, expected) != 0)
abort();
free(option->data);
}
void
multiple_domains_valid()
{
int ret;
struct packet p;
struct option_data *option;
char *data =
"\007example\003org\0\002cl\006foobar\003com\0\002fr\xc0\x10";
char *expected = "example.org. cl.foobar.com. fr.foobar.com.";
option = &p.options[DHO_DOMAIN_SEARCH];
option->len = 33;
option->data = malloc(option->len);
memcpy(option->data, data, option->len);
ret = setjmp(env);
if (ret == 0)
expand_domain_search(&p);
if (option->len != strlen(expected) ||
strcmp(option->data, expected) != 0)
abort();
free(option->data);
}
void
two_domains_compressed()
{
int ret;
struct packet p;
struct option_data *option;
char *data = "\007example\003org\0\006foobar\xc0\x08";
char *expected = "example.org. foobar.org.";
option = &p.options[DHO_DOMAIN_SEARCH];
option->len = 22;
option->data = malloc(option->len);
memcpy(option->data, data, option->len);
ret = setjmp(env);
if (ret == 0)
expand_domain_search(&p);
if (option->len != strlen(expected) ||
strcmp(option->data, expected) != 0)
abort();
free(option->data);
}
void
no_option_present()
{
int ret;
struct option_data option;
struct packet p;
option.data = NULL;
option.len = 0;
p.options[DHO_DOMAIN_SEARCH] = option;
ret = setjmp(env);
if (ret == 0)
expand_domain_search(&p);
if (p.options[DHO_DOMAIN_SEARCH].len != 0 ||
p.options[DHO_DOMAIN_SEARCH].data != NULL)
abort();
}
/*
* Parse all available options out of the specified packet.
*/
void
parse_options(struct packet *packet)
{
/* Initially, zero all option pointers. */
memset(packet->options, 0, sizeof(packet->options));
/* If we don't see the magic cookie, there's nothing to parse. */
if (memcmp(packet->raw->options, DHCP_OPTIONS_COOKIE, 4)) {
packet->options_valid = 0;
return;
}
/*
* Go through the options field, up to the end of the packet or
* the End field.
*/
parse_option_buffer(packet, &packet->raw->options[4],
packet->packet_length - DHCP_FIXED_NON_UDP - 4);
/*
* If we parsed a DHCP Option Overload option, parse more
* options out of the buffer(s) containing them.
*/
if (packet->options_valid &&
packet->options[DHO_DHCP_OPTION_OVERLOAD].data) {
if (packet->options[DHO_DHCP_OPTION_OVERLOAD].data[0] & 1)
parse_option_buffer(packet,
(unsigned char *)packet->raw->file,
sizeof(packet->raw->file));
if (packet->options[DHO_DHCP_OPTION_OVERLOAD].data[0] & 2)
parse_option_buffer(packet,
(unsigned char *)packet->raw->sname,
sizeof(packet->raw->sname));
}
/* Expand DHCP Domain Search option. */
if (packet->options_valid) {
expand_domain_search(packet);
}
}
void
one_domain_truncated2()
{
int ret;
struct option_data *option;
struct packet p;
char *data = "\007ex";
option = &p.options[DHO_DOMAIN_SEARCH];
option->len = 3;
option->data = malloc(option->len);
memcpy(option->data, data, option->len);
ret = setjmp(env);
if (ret == 0)
expand_domain_search(&p);
if (ret != 1)
abort();
free(option->data);
}
void
two_domains_truncatedptr()
{
int ret;
struct packet p;
struct option_data *option;
char *data = "\007example\003org\0\006foobar\xc0";
option = &p.options[DHO_DOMAIN_SEARCH];
option->len = 21;
option->data = malloc(option->len);
memcpy(option->data, data, option->len);
ret = setjmp(env);
if (ret == 0)
expand_domain_search(&p);
if (ret != 1)
abort();
free(option->data);
}
