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ss: Fix filter expression parser

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Seems expression parser did not work correctly some
long time and such simple things did not work too:

    # ss -a '( sport = :ssh )'

Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
This commit is contained in:
Vadim Kochan 2015-02-13 13:01:08 +02:00 committed by Stephen Hemminger
parent 1f01dd89f5
commit 1527a17ed8
1 changed files with 32 additions and 19 deletions
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51
misc/ss.c
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@ -240,10 +240,11 @@ static void filter_db_set(struct filter *f, int db)
static void filter_af_set(struct filter *f, int af)
{
f->dbs |= default_afs[af].dbs;
f->states |= default_afs[af].states;
f->families |= 1 << af;
do_default = 0;
f->dbs |= default_afs[af].dbs;
f->states |= default_afs[af].states;
f->families |= 1 << af;
do_default = 0;
preferred_family = af;
}
static int filter_af_get(struct filter *f, int af)
@ -1316,15 +1317,12 @@ static int xll_name_to_index(const char *dev)
void *parse_hostcond(char *addr)
{
char *port = NULL;
struct aafilter a;
struct aafilter a = { .port = -1 };
struct aafilter *res;
int fam = 0;
int fam = preferred_family;
struct filter *f = &current_filter;
memset(&a, 0, sizeof(a));
a.port = -1;
if (filter_af_get(f, AF_UNIX) || strncmp(addr, "unix:", 5) == 0) {
if (fam == AF_UNIX || strncmp(addr, "unix:", 5) == 0) {
char *p;
a.addr.family = AF_UNIX;
if (strncmp(addr, "unix:", 5) == 0)
@ -1336,7 +1334,7 @@ void *parse_hostcond(char *addr)
goto out;
}
if (filter_af_get(f, AF_PACKET) || strncmp(addr, "link:", 5) == 0) {
if (fam == AF_PACKET || strncmp(addr, "link:", 5) == 0) {
a.addr.family = AF_PACKET;
a.addr.bitlen = 0;
if (strncmp(addr, "link:", 5) == 0)
@ -1362,7 +1360,7 @@ void *parse_hostcond(char *addr)
goto out;
}
if (filter_af_get(f, AF_NETLINK) || strncmp(addr, "netlink:", 8) == 0) {
if (fam == AF_NETLINK || strncmp(addr, "netlink:", 8) == 0) {
a.addr.family = AF_NETLINK;
a.addr.bitlen = 0;
if (strncmp(addr, "netlink:", 8) == 0)
@ -1388,12 +1386,14 @@ void *parse_hostcond(char *addr)
goto out;
}
if (filter_af_get(f, AF_INET) || !strncmp(addr, "inet:", 5)) {
addr += 5;
if (fam == AF_INET || !strncmp(addr, "inet:", 5)) {
fam = AF_INET;
} else if (filter_af_get(f, AF_INET6) || !strncmp(addr, "inet6:", 6)) {
addr += 6;
if (!strncmp(addr, "inet:", 5))
addr += 5;
} else if (fam == AF_INET6 || !strncmp(addr, "inet6:", 6)) {
fam = AF_INET6;
if (!strncmp(addr, "inet6:", 6))
addr += 6;
}
/* URL-like literal [] */
@ -1461,8 +1461,11 @@ void *parse_hostcond(char *addr)
}
out:
if (fam)
if (fam != AF_UNSPEC) {
f->families = 0;
filter_af_set(f, fam);
filter_merge(f, f, 0);
}
res = malloc(sizeof(*res));
if (res)
@ -2212,6 +2215,9 @@ static int tcp_show(struct filter *f, int socktype)
char *buf = NULL;
int bufsize = 64*1024;
if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
return 0;
dg_proto = TCP_PROTO;
if (getenv("TCPDIAG_FILE"))
@ -2331,6 +2337,9 @@ static int udp_show(struct filter *f)
{
FILE *fp = NULL;
if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
return 0;
dg_proto = UDP_PROTO;
if (!getenv("PROC_NET_UDP") && !getenv("PROC_ROOT")
@ -2367,6 +2376,9 @@ static int raw_show(struct filter *f)
{
FILE *fp = NULL;
if (!filter_af_get(f, AF_INET) && !filter_af_get(f, AF_INET6))
return 0;
dg_proto = RAW_PROTO;
if (f->families&(1<<AF_INET)) {
@ -3579,8 +3591,6 @@ int main(int argc, char *argv[])
state_filter &= ~scan_state(*argv);
saw_states = 1;
} else {
if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
usage();
break;
}
argc--; argv++;
@ -3630,6 +3640,9 @@ int main(int argc, char *argv[])
exit(0);
}
if (ssfilter_parse(&current_filter.f, argc, argv, filter_fp))
usage();
netid_width = 0;
if (current_filter.dbs&(current_filter.dbs-1))
netid_width = 5;