/***************************************************************************
* TargetGroup.h -- The "TargetGroup" class holds a group of IP addresses, *
* such as those from a '/16' or '10.*.*.*' specification. It also has a *
* trivial HostGroupState class which handles a bunch of expressions that *
* go into TargetGroup classes. *
* *
***********************IMPORTANT NMAP LICENSE TERMS************************
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***************************************************************************/
/* $Id$ */
#ifndef TARGETGROUP_H
#define TARGETGROUP_H
#include "nmap.h"
class TargetGroup {
public:
/* used by get_target_types */
enum _targets_types { TYPE_NONE, IPV4_NETMASK, IPV4_RANGES, IPV6_ADDRESS };
/* used as input to skip range */
enum _octet_nums { FIRST_OCTET, SECOND_OCTET, THIRD_OCTET };
TargetGroup();
/* Initializes (or reinitializes) the object with a new expression,
such as 192.168.0.0/16 , 10.1.0-5.1-254 , or
fe80::202:e3ff:fe14:1102 . The af parameter is AF_INET or
AF_INET6 Returns 0 for success */
int parse_expr(const char * const target_expr, int af);
/* Reset the object without reinitializing it */
int rewind();
/* Grab the next host from this expression (if any). Returns 0 and
fills in ss if successful. ss must point to a pre-allocated
sockaddr_storage structure */
int get_next_host(struct sockaddr_storage *ss, size_t *sslen);
/* Returns the last given host, so that it will be given again next
time get_next_host is called. Obviously, you should only call
this if you have fetched at least 1 host since parse_expr() was
called */
int return_last_host();
/* return the target type */
char get_targets_type() {return targets_type;};
/* get the netmask */
int get_mask() {return netmask;};
/* is the current expression a named host */
int get_namedhost() {return namedhost;};
/* Skip an octet in the range array */
int skip_range(_octet_nums octet);
private:
enum _targets_types targets_type;
void Initialize();
#if HAVE_IPV6
struct sockaddr_in6 ip6;
#endif
/* These 4 are used for the '/mask' style of specifying target
net (IPV4_NETMASK) */
u32 netmask;
struct in_addr startaddr;
struct in_addr currentaddr;
struct in_addr endaddr;
// These three are for the '138.[1-7,16,91-95,200-].12.1' style (IPV4_RANGES)
u8 addresses[4][256];
unsigned int current[4];
u8 last[4];
/* Number of IPs left in this structure -- set to 0 if
the fields are not valid */
unsigned long long ipsleft;
// is the current target expression a named host
int namedhost;
};
class HostGroupState {
public:
HostGroupState(int lookahead, int randomize, char *target_expressions[],
int num_expressions);
~HostGroupState();
Target **hostbatch;
int max_batch_sz; /* The size of the hostbatch[] array */
int current_batch_sz; /* The number of VALID members of hostbatch[] */
int next_batch_no; /* The index of the next hostbatch[] member to be given
back to the user */
int randomize; /* Whether each batch should be "shuffled" prior to the ping
scan (they will also be out of order when given back one
at a time to the client program */
char **target_expressions; /* An array of target expression strings, passed
to us by the client (client is also in charge
of deleting it AFTER it is done with the
hostgroup_state */
int num_expressions; /* The number of valid expressions in
target_expressions member above */
int next_expression; /* The index of the next expression we have
to handle */
TargetGroup current_expression; /* For batch chunking -- targets in queue */
};
#endif /* TARGETGROUP_H */