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Simplify service table key type

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This commit is contained in:
dmiller
2022-10-31 17:27:55 +00:00
parent 7332939768
commit 119376c0c4
1 changed files with 8 additions and 15 deletions
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23
services.cc
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@@ -75,19 +75,12 @@
/* This structure is the key for looking up services in the
port/proto -> service map. */
struct port_spec {
union {
union port_spec {
struct {
u16 portno;
u16 proto;
} p;
u32 compval;
} u;
/* Sort in the usual nmap-services order. */
bool operator<(const port_spec& other) const {
return this->u.compval < other.u.compval;
}
};
/* This is a nservent augmented by a frequency ratio. */
@@ -106,7 +99,7 @@ extern NmapOps o;
static int numtcpports;
static int numudpports;
static int numsctpports;
typedef std::map<port_spec, service_node> ServiceMap;
typedef std::map<u32, service_node> ServiceMap;
static ServiceMap service_table;
static std::list<service_node> services_by_ratio;
static int services_initialized;
@@ -225,8 +218,8 @@ static int nmap_services_init() {
}
port_spec ps;
ps.u.p.portno = portno;
ps.u.p.proto = npe->p_proto;
ps.p.portno = portno;
ps.p.proto = npe->p_proto;
struct service_node sn;
@@ -245,7 +238,7 @@ static int nmap_services_init() {
sn.ratio = ratio;
std::pair<ServiceMap::iterator, bool> status = service_table.insert(
ServiceMap::value_type(ps, sn));
ServiceMap::value_type(ps.compval, sn));
if (!status.second) {
if (o.debugging > 1) {
@@ -320,9 +313,9 @@ const struct nservent *nmap_getservbyport(u16 port, u16 proto) {
if (nmap_services_init() == -1)
return NULL;
ps.u.p.portno = port;
ps.u.p.proto = proto;
i = service_table.find(ps);
ps.p.portno = port;
ps.p.proto = proto;
i = service_table.find(ps.compval);
if (i != service_table.end())
return &i->second;