diff options
Diffstat (limited to 'networking/netstat.c')
| -rw-r--r-- | networking/netstat.c | 79 |
1 files changed, 34 insertions, 45 deletions
diff --git a/networking/netstat.c b/networking/netstat.c index d6c10b07b..746e25091 100644 --- a/networking/netstat.c +++ b/networking/netstat.c @@ -120,50 +120,33 @@ static void build_ipv4_addr(char* local_addr, struct sockaddr_in* localaddr) ((struct sockaddr *) localaddr)->sa_family = AF_INET; } -static const char *get_sname(int port, const char *proto, int num) +static const char *get_sname(int port, const char *proto, int numeric) { - /* hummm, we return static buffer here!! */ - const char *str = itoa(ntohs(port)); - if (!num) { + if (!port) + return "*"; + if (!numeric) { struct servent *se = getservbyport(port, proto); if (se) - str = se->s_name; + return se->s_name; } - if (!port) { - str = "*"; - } - return str; + /* hummm, we may return static buffer here!! */ + return itoa(ntohs(port)); } -static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, const char *proto, int numeric) +static char *ip_port_str(struct sockaddr *addr, int port, const char *proto, int numeric) { - const char *port_name; - int max_len; - int port_name_len; + enum { salen = USE_FEATURE_IPV6(sizeof(struct sockaddr_in6)) SKIP_FEATURE_IPV6(sizeof(struct sockaddr_in)) }; + char *host, *host_port; -// TODO: replace by xmalloc_sockaddr2host? -#if ENABLE_FEATURE_IPV6 - if (addr->sa_family == AF_INET6) { - INET6_rresolve(ip_port, size, (struct sockaddr_in6 *)addr, - (numeric & NETSTAT_NUMERIC) ? 0x0fff : 0); - } else -#endif - { - INET_rresolve(ip_port, size, (struct sockaddr_in *)addr, - 0x4000 | ((numeric & NETSTAT_NUMERIC) ? 0x0fff : 0), - 0xffffffff); - } - port_name = get_sname(htons(port), proto, numeric); - - max_len = (option_mask32 & OPT_widedisplay) - ? (PRINT_IP_MAX_SIZE_WIDE - 1) - : (PRINT_IP_MAX_SIZE - 1); - port_name_len = strlen(port_name); - if ((strlen(ip_port) + port_name_len) > max_len) - ip_port[max_len - port_name_len] = '\0'; - ip_port += strlen(ip_port); - *ip_port++ = ':'; - strcpy(ip_port, port_name); + /* Code which used "*" for INADDR_ANY is removed: it's ambiguous in IPv6, + * while "0.0.0.0" is not. */ + + host = numeric ? xmalloc_sockaddr2dotted_noport(addr, salen) + : xmalloc_sockaddr2host_noport(addr, salen); + + host_port = xasprintf("%s:%s", host, get_sname(htons(port), proto, numeric)); + free(host); + return host_port; } static void tcp_do_one(int lnr, const char *line) @@ -206,14 +189,16 @@ static void tcp_do_one(int lnr, const char *line) if ((rem_port && (flags & NETSTAT_CONNECTED)) || (!rem_port && (flags & NETSTAT_LISTENING)) ) { - snprint_ip_port(local_addr, sizeof(local_addr), + char *l = ip_port_str( (struct sockaddr *) &localaddr, local_port, "tcp", flags & NETSTAT_NUMERIC); - snprint_ip_port(rem_addr, sizeof(rem_addr), + char *r = ip_port_str( (struct sockaddr *) &remaddr, rem_port, "tcp", flags & NETSTAT_NUMERIC); printf(net_conn_line, - "tcp", rxq, txq, local_addr, rem_addr, tcp_state[state]); + "tcp", rxq, txq, l, r, tcp_state[state]); + free(l); + free(r); } } @@ -285,14 +270,16 @@ static void udp_do_one(int lnr, const char *line) if ((have_remaddr && (flags & NETSTAT_CONNECTED)) || (!have_remaddr && (flags & NETSTAT_LISTENING)) ) { - snprint_ip_port(local_addr, sizeof(local_addr), + char *l = ip_port_str( (struct sockaddr *) &localaddr, local_port, "udp", flags & NETSTAT_NUMERIC); - snprint_ip_port(rem_addr, sizeof(rem_addr), + char *r = ip_port_str( (struct sockaddr *) &remaddr, rem_port, "udp", flags & NETSTAT_NUMERIC); printf(net_conn_line, - "udp", rxq, txq, local_addr, rem_addr, state_str); + "udp", rxq, txq, l, r, state_str); + free(l); + free(r); } } } @@ -339,14 +326,16 @@ static void raw_do_one(int lnr, const char *line) if ((have_remaddr && (flags & NETSTAT_CONNECTED)) || (!have_remaddr && (flags & NETSTAT_LISTENING)) ) { - snprint_ip_port(local_addr, sizeof(local_addr), + char *l = ip_port_str( (struct sockaddr *) &localaddr, local_port, "raw", flags & NETSTAT_NUMERIC); - snprint_ip_port(rem_addr, sizeof(rem_addr), + char *r = ip_port_str( (struct sockaddr *) &remaddr, rem_port, "raw", flags & NETSTAT_NUMERIC); printf(net_conn_line, - "raw", rxq, txq, local_addr, rem_addr, itoa(state)); + "raw", rxq, txq, l, r, itoa(state)); + free(l); + free(r); } } } |