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introduce and use xdup2(int, int)

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stop checking whether setsockopt_reuseaddr(int fd) was successful (it always is)
remove second parameter (sockllen) from xmalloc_sockaddr2xxxxx functions

sockaddr2str                                         142     156     +14
collect_blk                                          467     474      +7
xdup2                                                 28      33      +5
singlemount                                         4456    4454      -2
print_host                                           214     212      -2
nslookup_main                                        139     137      -2
ftpgetput_main                                       414     412      -2
udhcpd_main                                         1258    1255      -3
udhcpc_main                                         2405    2402      -3
traceroute_main                                     4125    4122      -3
nc_main                                             1072    1069      -3
buffer_fill_and_print                                 76      73      -3
xmalloc_sockaddr2hostonly_noport                      18      14      -4
xmalloc_sockaddr2host_noport                          18      14      -4
xmalloc_sockaddr2host                                 15      11      -4
xmalloc_sockaddr2dotted_noport                        18      14      -4
xmalloc_sockaddr2dotted                               18      14      -4
wget_main                                           2618    2614      -4
ping_main                                            393     389      -4
ip_port_str                                          120     115      -5
dhcprelay_main                                      1146    1141      -5
dnsd_main                                           1531    1525      -6
passwd_main                                         1110    1102      -8
udhcp_kernel_packet                                  206     197      -9
udhcp_listen_socket                                  154     144     -10
getty_main                                          2576    2566     -10
setup                                                655     640     -15
xmove_fd                                              51      34     -17
dolisten                                             759     742     -17
tcpudpsvd_main                                      1866    1836     -30
startservice                                         339     299     -40
This commit is contained in:
Denis Vlasenko
2007-08-18 14:16:39 +00:00
parent b98c26ad68
commit a27a11bb2c
23 changed files with 95 additions and 107 deletions
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2
networking/dnsd.c
View File

@ -375,7 +375,7 @@ int dnsd_main(int argc, char **argv)
xbind(udps, &lsa->sa, lsa->len);
/* xlisten(udps, 50); - ?!! DGRAM sockets are never listened on I think? */
bb_info_msg("Accepting UDP packets on %s",
xmalloc_sockaddr2dotted(&lsa->sa, lsa->len));
xmalloc_sockaddr2dotted(&lsa->sa));
while (1) {
int r;

2
networking/ftpgetput.c
View File

@ -348,7 +348,7 @@ int ftpgetput_main(int argc, char **argv)
server->lsa = xhost2sockaddr(argv[0], bb_lookup_port(port, "tcp", 21));
if (verbose_flag) {
printf("Connecting to %s (%s)\n", argv[0],
xmalloc_sockaddr2dotted(&server->lsa->sa, server->lsa->len));
xmalloc_sockaddr2dotted(&server->lsa->sa));
}
/* Connect/Setup/Configure the FTP session */

3
networking/inetd.c
View File

@ -453,8 +453,7 @@ static void setup(servtab_t *sep)
bb_perror_msg("%s/%s: socket", sep->se_service, sep->se_proto);
return;
}
if (setsockopt_reuseaddr(sep->se_fd) < 0)
bb_perror_msg("setsockopt(SO_REUSEADDR)");
setsockopt_reuseaddr(sep->se_fd);
#if ENABLE_FEATURE_INETD_RPC
if (isrpcservice(sep)) {

12
networking/nc_bloaty.c
View File

@ -278,7 +278,7 @@ static void dolisten(void)
rr = getsockname(netfd, &ouraddr->sa, &ouraddr->len);
if (rr < 0)
bb_perror_msg_and_die("getsockname after bind");
addr = xmalloc_sockaddr2dotted(&ouraddr->sa, ouraddr->len);
addr = xmalloc_sockaddr2dotted(&ouraddr->sa);
fprintf(stderr, "listening on %s ...\n", addr);
free(addr);
}
@ -341,7 +341,7 @@ create new one, and bind() it. TODO */
/* nc 1.10 bails out instead, and its error message
* is not suppressed by o_verbose */
if (o_verbose) {
char *remaddr = xmalloc_sockaddr2dotted(&remend.sa, remend.len);
char *remaddr = xmalloc_sockaddr2dotted(&remend.sa);
bb_error_msg("connect from wrong ip/port %s ignored", remaddr);
free(remaddr);
}
@ -393,9 +393,9 @@ create new one, and bind() it. TODO */
accept the connection and then reject undesireable ones by closing.
In other words, we need a TCP MSG_PEEK. */
/* bbox: removed most of it */
lcladdr = xmalloc_sockaddr2dotted(&ouraddr->sa, ouraddr->len);
remaddr = xmalloc_sockaddr2dotted(&remend.sa, remend.len);
remhostname = o_nflag ? remaddr : xmalloc_sockaddr2host(&remend.sa, remend.len);
lcladdr = xmalloc_sockaddr2dotted(&ouraddr->sa);
remaddr = xmalloc_sockaddr2dotted(&remend.sa);
remhostname = o_nflag ? remaddr : xmalloc_sockaddr2host(&remend.sa);
fprintf(stderr, "connect to %s from %s (%s)\n",
lcladdr, remhostname, remaddr);
free(lcladdr);
@ -796,7 +796,7 @@ int nc_main(int argc, char **argv)
remend = *themaddr;
if (o_verbose)
themdotted = xmalloc_sockaddr2dotted(&themaddr->sa, themaddr->len);
themdotted = xmalloc_sockaddr2dotted(&themaddr->sa);
x = connect_w_timeout(netfd);
if (o_zero && x == 0 && o_udpmode) /* if UDP scanning... */

4
networking/netstat.c
View File

@ -140,8 +140,8 @@ static char *ip_port_str(struct sockaddr *addr, int port, const char *proto, int
/* 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 = numeric ? xmalloc_sockaddr2dotted_noport(addr)
: xmalloc_sockaddr2host_noport(addr);
host_port = xasprintf("%s:%s", host, get_sname(htons(port), proto, numeric));
free(host);

7
networking/nslookup.c
View File

@ -72,8 +72,8 @@ static int print_host(const char *hostname, const char *header)
// printf("%s\n", cur->ai_canonname); ?
while (cur) {
char *dotted, *revhost;
dotted = xmalloc_sockaddr2dotted_noport(cur->ai_addr, cur->ai_addrlen);
revhost = xmalloc_sockaddr2hostonly_noport(cur->ai_addr, cur->ai_addrlen);
dotted = xmalloc_sockaddr2dotted_noport(cur->ai_addr);
revhost = xmalloc_sockaddr2hostonly_noport(cur->ai_addr);
printf("Address %u: %s%c", ++cnt, dotted, revhost ? ' ' : '\n');
if (revhost) {
@ -102,8 +102,7 @@ static void server_print(void)
{
char *server;
server = xmalloc_sockaddr2dotted_noport((struct sockaddr*)&_res.nsaddr_list[0],
sizeof(struct sockaddr_in));
server = xmalloc_sockaddr2dotted_noport((struct sockaddr*)&_res.nsaddr_list[0]);
/* I honestly don't know what to do if DNS server has _IPv6 address_.
* Probably it is listed in
* _res._u._ext_.nsaddrs[MAXNS] (of type "struct sockaddr_in6*" each)

4
networking/ping.c
View File

@ -664,7 +664,7 @@ static void ping(len_and_sockaddr *lsa)
printf("PING %s (%s)", hostname, dotted);
if (source_lsa) {
printf(" from %s",
xmalloc_sockaddr2dotted_noport(&source_lsa->sa, source_lsa->len));
xmalloc_sockaddr2dotted_noport(&source_lsa->sa));
}
printf(": %d data bytes\n", datalen);
@ -715,7 +715,7 @@ int ping_main(int argc, char **argv)
/* leaking it here... */
source_lsa = NULL;
dotted = xmalloc_sockaddr2dotted_noport(&lsa->sa, lsa->len);
dotted = xmalloc_sockaddr2dotted_noport(&lsa->sa);
ping(lsa);
pingstats(0);
return EXIT_SUCCESS;

2
networking/tftp.c
View File

@ -443,7 +443,7 @@ int tftp_main(int argc, char **argv)
#if ENABLE_DEBUG_TFTP
fprintf(stderr, "using server '%s', remotefile '%s', localfile '%s'\n",
xmalloc_sockaddr2dotted(&peer_lsa->sa, peer_lsa->len),
xmalloc_sockaddr2dotted(&peer_lsa->sa),
remotefile, localfile);
#endif

2
networking/traceroute.c
View File

@ -812,7 +812,7 @@ print_inetname(struct sockaddr_in *from)
else {
char *n = NULL;
if (from->sin_addr.s_addr != INADDR_ANY)
n = xmalloc_sockaddr2host_noport((struct sockaddr*)from, sizeof(*from));
n = xmalloc_sockaddr2host_noport((struct sockaddr*)from);
printf(" %s (%s)", (n ? n : ina), ina);
free(n);
}

2
networking/udhcp/common.h
View File

@ -83,7 +83,7 @@ int udhcp_sp_fd_set(fd_set *rfds, int extra_fd);
int udhcp_sp_read(fd_set *rfds);
int raw_socket(int ifindex);
int read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t *arp);
int listen_socket(uint32_t ip, int port, const char *inf);
int listen_socket(/*uint32_t ip,*/ int port, const char *inf);
/* Returns 1 if no reply received */
int arpping(uint32_t test_ip, uint32_t from_ip, uint8_t *from_mac, const char *interface);

2
networking/udhcp/dhcpc.c
View File

@ -311,7 +311,7 @@ int udhcpc_main(int argc, char **argv)
if (listen_mode != LISTEN_NONE && sockfd < 0) {
if (listen_mode == LISTEN_KERNEL)
sockfd = listen_socket(INADDR_ANY, CLIENT_PORT, client_config.interface);
sockfd = listen_socket(/*INADDR_ANY,*/ CLIENT_PORT, client_config.interface);
else
sockfd = raw_socket(client_config.ifindex);
}

2
networking/udhcp/dhcpd.c
View File

@ -95,7 +95,7 @@ int udhcpd_main(int argc, char **argv)
while (1) { /* loop until universe collapses */
if (server_socket < 0) {
server_socket = listen_socket(INADDR_ANY, SERVER_PORT,
server_socket = listen_socket(/*INADDR_ANY,*/ SERVER_PORT,
server_config.interface);
}

9
networking/udhcp/dhcprelay.c
View File

@ -167,16 +167,17 @@ static int init_sockets(char **client, int num_clients,
int i;
/* talk to real server on bootps */
fds[0] = listen_socket(htonl(INADDR_ANY), 67, server);
fds[0] = listen_socket(/*INADDR_ANY,*/ 67, server);
*max_socket = fds[0];
/* array starts at 1 since server is 0 */
num_clients++;
for (i=1; i < num_clients; i++) {
for (i = 1; i < num_clients; i++) {
/* listen for clients on bootps */
fds[i] = listen_socket(htonl(INADDR_ANY), 67, client[i-1]);
if (fds[i] > *max_socket) *max_socket = fds[i];
fds[i] = listen_socket(/*NADDR_ANY,*/ 67, client[i-1]);
if (fds[i] > *max_socket)
*max_socket = fds[i];
}
return i;

7
networking/udhcp/packet.c
View File

@ -194,17 +194,14 @@ int udhcp_kernel_packet(struct dhcpMessage *payload,
if (fd < 0)
return -1;
if (setsockopt_reuseaddr(fd) == -1) {
close(fd);
return -1;
}
setsockopt_reuseaddr(fd);
memset(&client, 0, sizeof(client));
client.sin_family = AF_INET;
client.sin_port = htons(source_port);
client.sin_addr.s_addr = source_ip;
if (bind(fd, (struct sockaddr *)&client, sizeof(struct sockaddr)) == -1) {
if (bind(fd, (struct sockaddr *)&client, sizeof(client)) == -1) {
close(fd);
return -1;
}

42
networking/udhcp/socket.c
View File

@ -45,10 +45,6 @@ int read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t
memset(&ifr, 0, sizeof(ifr));
fd = xsocket(AF_INET, SOCK_RAW, IPPROTO_RAW);
// if (fd < 0) {
// bb_perror_msg("socket failed");
// return -1;
// }
ifr.ifr_addr.sa_family = AF_INET;
strncpy(ifr.ifr_name, interface, sizeof(ifr.ifr_name));
@ -87,40 +83,30 @@ int read_interface(const char *interface, int *ifindex, uint32_t *addr, uint8_t
return 0;
}
int listen_socket(uint32_t ip, int port, const char *inf)
/* 1. None of the callers expects it to ever fail */
/* 2. ip was always INADDR_ANY */
int listen_socket(/*uint32_t ip,*/ int port, const char *inf)
{
struct ifreq interface;
int fd;
struct ifreq interface;
struct sockaddr_in addr;
DEBUG("Opening listen socket on 0x%08x:%d %s", ip, port, inf);
fd = xsocket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
setsockopt_reuseaddr(fd);
if (setsockopt_broadcast(fd) == -1)
bb_perror_msg_and_die("SO_BROADCAST");
strncpy(interface.ifr_name, inf, IFNAMSIZ);
if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &interface, sizeof(interface)) == -1)
bb_perror_msg_and_die("SO_BINDTODEVICE");
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = ip;
if (setsockopt_reuseaddr(fd) == -1) {
close(fd);
return -1;
}
if (setsockopt_broadcast(fd) == -1) {
close(fd);
return -1;
}
strncpy(interface.ifr_name, inf, IFNAMSIZ);
if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, &interface, sizeof(interface)) < 0) {
close(fd);
return -1;
}
if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
close(fd);
return -1;
}
/* addr.sin_addr.s_addr = ip; - all-zeros is INADDR_ANY */
xbind(fd, (struct sockaddr *)&addr, sizeof(addr));
return fd;
}

2
networking/wget.c
View File

@ -236,7 +236,7 @@ int wget_main(int argc, char **argv)
lsa = xhost2sockaddr(server.host, server.port);
if (!(opt & WGET_OPT_QUIET)) {
fprintf(stderr, "Connecting to %s (%s)\n", server.host,
xmalloc_sockaddr2dotted(&lsa->sa, lsa->len));
xmalloc_sockaddr2dotted(&lsa->sa));
/* We leak result of xmalloc_sockaddr2dotted */
}