add x to IPv6 functions which can die
diff --git a/include/libbb.h b/include/libbb.h
index 44bd6e0..dd23c70 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -317,13 +317,13 @@
* Currently will return IPv4 or IPv6 sockaddrs only
* (depending on host), but in theory nothing prevents e.g.
* UNIX socket address being returned, IPX sockaddr etc... */
-len_and_sockaddr* host2sockaddr(const char *host, int port);
+len_and_sockaddr* xhost2sockaddr(const char *host, int port);
#if ENABLE_FEATURE_IPV6
/* Same, useful if you want to force family (e.g. IPv6) */
-len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af);
+len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af);
#else
-/* [we evaluate af: think about "host_and_af2sockaddr(..., af++)"] */
-#define host_and_af2sockaddr(host, port, af) ((void)(af), host2sockaddr((host), (port)))
+/* [we evaluate af: think about "xhost_and_af2sockaddr(..., af++)"] */
+#define xhost_and_af2sockaddr(host, port, af) ((void)(af), xhost2sockaddr((host), (port)))
#endif
/* Assign sin[6]_port member if the socket is of corresponding type,
* otherwise no-op. Useful for ftp.
diff --git a/libbb/xconnect.c b/libbb/xconnect.c
index 2b35baa..e5bdaac 100644
--- a/libbb/xconnect.c
+++ b/libbb/xconnect.c
@@ -111,16 +111,19 @@
/* What? UNIX socket? IPX?? :) */
}
+/* We hijack this constant to mean something else */
+/* It doesn't hurt because we will remove this bit anyway */
+#define DIE_ON_ERROR AI_CANONNAME
+
/* host: "1.2.3.4[:port]", "www.google.com[:port]"
- * port: if neither of above specifies port #
- */
+ * port: if neither of above specifies port # */
static len_and_sockaddr* str2sockaddr(
const char *host, int port,
USE_FEATURE_IPV6(sa_family_t af,)
int ai_flags)
{
int rc;
- len_and_sockaddr *r; // = NULL;
+ len_and_sockaddr *r = NULL;
struct addrinfo *result = NULL;
const char *org_host = host; /* only for error msg */
const char *cp;
@@ -158,14 +161,18 @@
/* Needed. Or else we will get each address thrice (or more)
* for each possible socket type (tcp,udp,raw...): */
hint.ai_socktype = SOCK_STREAM;
- hint.ai_flags = ai_flags;
+ hint.ai_flags = ai_flags & ~DIE_ON_ERROR;
rc = getaddrinfo(host, NULL, &hint, &result);
- if (rc || !result)
- bb_error_msg_and_die("bad address '%s'", org_host);
+ if (rc || !result) {
+ if (ai_flags & DIE_ON_ERROR)
+ bb_error_msg_and_die("bad address '%s'", org_host);
+ goto ret;
+ }
r = xmalloc(offsetof(len_and_sockaddr, sa) + result->ai_addrlen);
r->len = result->ai_addrlen;
memcpy(&r->sa, result->ai_addr, result->ai_addrlen);
set_nport(r, htons(port));
+ ret:
freeaddrinfo(result);
return r;
}
@@ -174,20 +181,20 @@
#endif
#if ENABLE_FEATURE_IPV6
-len_and_sockaddr* host_and_af2sockaddr(const char *host, int port, sa_family_t af)
+len_and_sockaddr* xhost_and_af2sockaddr(const char *host, int port, sa_family_t af)
{
- return str2sockaddr(host, port, af, 0);
+ return str2sockaddr(host, port, af, DIE_ON_ERROR);
}
#endif
-len_and_sockaddr* host2sockaddr(const char *host, int port)
+len_and_sockaddr* xhost2sockaddr(const char *host, int port)
{
- return str2sockaddr(host, port, AF_UNSPEC, 0);
+ return str2sockaddr(host, port, AF_UNSPEC, DIE_ON_ERROR);
}
-static len_and_sockaddr* dotted2sockaddr(const char *host, int port)
+static len_and_sockaddr* xdotted2sockaddr(const char *host, int port)
{
- return str2sockaddr(host, port, AF_UNSPEC, NI_NUMERICHOST);
+ return str2sockaddr(host, port, AF_UNSPEC, AI_NUMERICHOST | DIE_ON_ERROR);
}
int xsocket_stream(len_and_sockaddr **lsap)
@@ -220,10 +227,7 @@
len_and_sockaddr *lsa;
if (bindaddr && bindaddr[0]) {
- lsa = dotted2sockaddr(bindaddr, port);
- /* currently NULL check is in str2sockaddr */
- //if (!lsa)
- // bb_error_msg_and_die("bad address '%s'", bindaddr);
+ lsa = xdotted2sockaddr(bindaddr, port);
/* user specified bind addr dictates family */
fd = xsocket(lsa->sa.sa_family, SOCK_STREAM, 0);
} else {
@@ -241,10 +245,7 @@
int fd;
len_and_sockaddr *lsa;
- lsa = host2sockaddr(peer, port);
- /* currently NULL check is in str2sockaddr */
- //if (!lsa)
- // bb_error_msg_and_die("bad address '%s'", peer);
+ lsa = xhost2sockaddr(peer, port);
fd = xsocket(lsa->sa.sa_family, SOCK_STREAM, 0);
setsockopt_reuseaddr(fd);
xconnect(fd, &lsa->sa, lsa->len);
diff --git a/networking/arping.c b/networking/arping.c
index 20c782f..d71ac49 100644
--- a/networking/arping.c
+++ b/networking/arping.c
@@ -307,7 +307,7 @@
if (!inet_aton(target, &dst)) {
len_and_sockaddr *lsa;
- lsa = host_and_af2sockaddr(target, 0, AF_INET);
+ lsa = xhost_and_af2sockaddr(target, 0, AF_INET);
memcpy(&dst, &lsa->sin.sin_addr.s_addr, 4);
if (ENABLE_FEATURE_CLEAN_UP)
free(lsa);
diff --git a/networking/dnsd.c b/networking/dnsd.c
index 6d1335e..78722d6 100644
--- a/networking/dnsd.c
+++ b/networking/dnsd.c
@@ -377,7 +377,7 @@
signal(SIGURG, SIG_IGN);
#endif
- lsa = host2sockaddr(listen_interface, port);
+ lsa = xhost2sockaddr(listen_interface, port);
udps = xsocket(lsa->sa.sa_family, SOCK_DGRAM, 0);
xbind(udps, &lsa->sa, lsa->len);
// xlisten(udps, 50); - ?!! DGRAM sockets are never listened on I think?
diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
index dad1c99..9b0510d 100644
--- a/networking/ftpgetput.c
+++ b/networking/ftpgetput.c
@@ -346,7 +346,7 @@
/* We want to do exactly _one_ DNS lookup, since some
* sites (i.e. ftp.us.debian.org) use round-robin DNS
* and we want to connect to only one IP... */
- server->lsa = host2sockaddr(argv[0], bb_lookup_port(port, "tcp", 21));
+ 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));
diff --git a/networking/nslookup.c b/networking/nslookup.c
index 14c05b3..8076aff 100644
--- a/networking/nslookup.c
+++ b/networking/nslookup.c
@@ -49,7 +49,7 @@
static int print_host(const char *hostname, const char *header)
{
- /* We can't use host2sockaddr() - we want to get ALL addresses,
+ /* We can't use xhost2sockaddr() - we want to get ALL addresses,
* not just one */
struct addrinfo *result = NULL;
diff --git a/networking/ping.c b/networking/ping.c
index d0e6f3a..e765843 100644
--- a/networking/ping.c
+++ b/networking/ping.c
@@ -211,9 +211,9 @@
bb_show_usage();
#if ENABLE_PING6
- lsa = host_and_af2sockaddr(hostname, 0, af);
+ lsa = xhost_and_af2sockaddr(hostname, 0, af);
#else
- lsa = host_and_af2sockaddr(hostname, 0, AF_INET);
+ lsa = xhost_and_af2sockaddr(hostname, 0, AF_INET);
#endif
/* Set timer _after_ DNS resolution */
signal(SIGALRM, noresp);
@@ -743,9 +743,9 @@
af = AF_INET;
if (option_mask32 & OPT_IPV6)
af = AF_INET6;
- lsa = host_and_af2sockaddr(hostname, 0, af);
+ lsa = xhost_and_af2sockaddr(hostname, 0, af);
#else
- lsa = host_and_af2sockaddr(hostname, 0, AF_INET);
+ lsa = xhost_and_af2sockaddr(hostname, 0, AF_INET);
#endif
dotted = xmalloc_sockaddr2dotted_noport(&lsa->sa, lsa->len);
#if ENABLE_PING6
diff --git a/networking/tftp.c b/networking/tftp.c
index a6d85a5..9083257 100644
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -488,7 +488,7 @@
}
port = bb_lookup_port(argv[optind + 1], "udp", 69);
- peer_lsa = host2sockaddr(argv[optind], port);
+ peer_lsa = xhost2sockaddr(argv[optind], port);
#if ENABLE_DEBUG_TFTP
fprintf(stderr, "using server \"%s\", "
diff --git a/networking/wget.c b/networking/wget.c
index e1a4bab..e649ccd 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -234,7 +234,7 @@
/* We want to do exactly _one_ DNS lookup, since some
* sites (i.e. ftp.us.debian.org) use round-robin DNS
* and we want to connect to only one IP... */
- lsa = host2sockaddr(server.host, server.port);
+ 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));
@@ -354,7 +354,7 @@
server.port = target.port;
}
free(lsa);
- lsa = host2sockaddr(server.host, server.port);
+ lsa = xhost2sockaddr(server.host, server.port);
break;
}
}
diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c
index 86bfdc5..97ddf09 100644
--- a/sysklogd/syslogd.c
+++ b/sysklogd/syslogd.c
@@ -566,7 +566,7 @@
#endif
#if ENABLE_FEATURE_REMOTE_LOG
if (option_mask32 & OPT_remotelog) { // -R
- remoteAddr = host2sockaddr(opt_R, 514);
+ remoteAddr = xhost2sockaddr(opt_R, 514);
}
//if (option_mask32 & OPT_locallog) // -L
#endif