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-rw-r--r--erts/emulator/drivers/common/inet_drv.c247
1 files changed, 139 insertions, 108 deletions
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 93ea9f5dcb..5ce0e1de9e 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -591,6 +591,8 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n)
(((unsigned char*) (s))[1] << 8) | \
(((unsigned char*) (s))[0]))
+#ifdef HAVE_SYS_UN_H
+
/* strnlen doesn't exist everywhere */
static size_t my_strnlen(const char *s, size_t maxlen)
{
@@ -608,6 +610,8 @@ static int is_nonzero(const char *s, size_t n)
return 0;
}
+#endif
+
#ifdef VALGRIND
# include <valgrind/memcheck.h>
#else
@@ -1301,6 +1305,8 @@ static ErlDrvTermData am_ssl_tls;
static ErlDrvTermData am_udp;
static ErlDrvTermData am_udp_passive;
static ErlDrvTermData am_udp_error;
+#endif
+#ifdef HAVE_SYS_UN_H
static ErlDrvTermData am_local;
#endif
#ifdef HAVE_SCTP
@@ -1328,7 +1334,10 @@ static ErlDrvTermData am_ipv6_v6only;
static ErlDrvTermData am_netns;
#endif
-/* speical errors for bad ports and sequences */
+static char str_eafnosupport[] = "eafnosupport";
+static char str_einval[] = "einval";
+
+/* special errors for bad ports and sequences */
#define EXBADPORT "exbadport"
#define EXBADSEQ "exbadseq"
@@ -3846,6 +3855,8 @@ static int inet_init()
#ifdef HAVE_UDP
INIT_ATOM(udp_passive);
INIT_ATOM(udp_error);
+#endif
+#ifdef HAVE_SYS_UN_H
INIT_ATOM(local);
#endif
INIT_ATOM(empty_out_q);
@@ -3955,74 +3966,88 @@ static int inet_init()
/*
** Set an inaddr structure:
-** src = [P1,P0,X1,X2,.....]
+** *src = [P1,P0,X1,X2,.....]
** dst points to a structure large enugh to keep any kind
** of inaddr.
** *len is set to length of src on call
** and is set to actual length of dst on return
-** return NULL on error and ptr after port address on success
+** return NULL if ok or ptr to errno string for error
*/
static char* inet_set_address(int family, inet_address* dst,
- char* src, ErlDrvSizeT* len)
+ char* *src, ErlDrvSizeT* len)
{
short port;
- if ((family == AF_INET) && (*len >= 2+4)) {
+ switch (family) {
+ case AF_INET: {
+ if (*len < 2+4) return str_einval;
sys_memzero((char*)dst, sizeof(struct sockaddr_in));
- port = get_int16(src);
+ port = get_int16(*src);
#ifndef NO_SA_LEN
dst->sai.sin_len = sizeof(struct sockaddr_in);
#endif
dst->sai.sin_family = family;
dst->sai.sin_port = sock_htons(port);
- sys_memcpy(&dst->sai.sin_addr, src+2, 4);
+ sys_memcpy(&dst->sai.sin_addr, (*src)+2, 4);
*len = sizeof(struct sockaddr_in);
- return src + 2+4;
+ *src += 2 + 4;
+ return NULL;
}
#if defined(HAVE_IN6) && defined(AF_INET6)
- else if ((family == AF_INET6) && (*len >= 2+16)) {
+ case AF_INET6: {
+ if (*len < 2+16) return str_einval;
sys_memzero((char*)dst, sizeof(struct sockaddr_in6));
- port = get_int16(src);
+ port = get_int16(*src);
#ifndef NO_SA_LEN
dst->sai6.sin6_len = sizeof(struct sockaddr_in6);
#endif
dst->sai6.sin6_family = family;
dst->sai6.sin6_port = sock_htons(port);
dst->sai6.sin6_flowinfo = 0; /* XXX this may be set as well ?? */
- sys_memcpy(&dst->sai6.sin6_addr, src+2, 16);
- *len = sizeof(struct sockaddr_in6);
- return src + 2+16;
+ sys_memcpy(&dst->sai6.sin6_addr, (*src)+2, 16);
+ *len = sizeof(struct sockaddr_in6);
+ *src += 2 + 16;
+ return NULL;
}
#endif
#ifdef HAVE_SYS_UN_H
- else if ((family == AF_UNIX) && (*len >= 1)) {
- int n = *((unsigned char*)src);
- if ((*len < 1+n) || (sizeof(dst->sal.sun_path) < n+1))
- return NULL;
+ case AF_UNIX: {
+ int n;
+ if (*len == 0) return str_einval;
+ n = *((unsigned char*)(*src)); /* Length field */
+ if ((*len < 1+n) || (sizeof(dst->sal.sun_path) < n+1)) {
+ return str_einval;
+ }
sys_memzero((char*)dst, sizeof(struct sockaddr_un));
dst->sal.sun_family = family;
- sys_memcpy(dst->sal.sun_path, src+1, n);
+ sys_memcpy(dst->sal.sun_path, (*src)+1, n);
*len = offsetof(struct sockaddr_un, sun_path) + n;
- return src + 1 + n;
+ *src += 1 + n;
+ return NULL;
}
#endif
- return NULL;
+ }
+ return str_eafnosupport;
}
/*
** Set an inaddr structure, address family comes from source data,
** or from argument if source data specifies constant address.
**
-** src = [TAG,P1,P0] when TAG = INET_AF_ANY | INET_AF_LOOPBACK
-** src = [TAG,P1,P0,X1,X2,...] when TAG = INET_AF_INET | INET_AF_INET6 | INET_AF_LOCAL
+** *src = [TAG,P1,P0]
+** when TAG = INET_AF_ANY | INET_AF_LOOPBACK
+** *src = [TAG,P1,P0,X1,X2,...]
+** when TAG = INET_AF_INET | INET_AF_INET6 | INET_AF_LOCAL
+** *src = [TAG,Len,...]
+** when TAG = INET_AF_LOCAL
*/
static char *inet_set_faddress(int family, inet_address* dst,
- char *src, ErlDrvSizeT* len) {
+ char* *src, ErlDrvSizeT* len) {
int tag;
- if (*len < 1) return NULL;
+ if (*len < 1) return str_einval;
(*len) --;
- tag = *(src ++);
+ tag = *((*src) ++);
switch (tag) {
case INET_AF_INET:
family = AF_INET;
@@ -4042,8 +4067,8 @@ static char *inet_set_faddress(int family, inet_address* dst,
case INET_AF_LOOPBACK: {
int port;
- if (*len < 2) return NULL;
- port = get_int16(src);
+ if (*len < 2) return str_einval;
+ port = get_int16(*src);
switch (family) {
case AF_INET: {
struct in_addr addr;
@@ -4055,7 +4080,7 @@ static char *inet_set_faddress(int family, inet_address* dst,
addr.s_addr = sock_htonl(INADDR_LOOPBACK);
break;
default:
- return NULL;
+ return str_einval;
}
sys_memzero((char*)dst, sizeof(struct sockaddr_in));
#ifndef NO_SA_LEN
@@ -4077,7 +4102,7 @@ static char *inet_set_faddress(int family, inet_address* dst,
paddr = &in6addr_loopback;
break;
default:
- return NULL;
+ return str_einval;
}
sys_memzero((char*)dst, sizeof(struct sockaddr_in6));
#ifndef NO_SA_LEN
@@ -4091,12 +4116,13 @@ static char *inet_set_faddress(int family, inet_address* dst,
} break;
# endif
default:
- return NULL;
+ return str_einval;
}
- return src + 2;
+ *src += 2;
+ return NULL;
} break;
default:
- return NULL;
+ return str_eafnosupport;
}
return inet_set_address(family, dst, src, len);
}
@@ -6691,7 +6717,6 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
case SCTP_OPT_SET_PEER_PRIMARY_ADDR:
{
ErlDrvSizeT alen;
- char *after;
CHKLEN(curr, ASSOC_ID_LEN);
/* XXX: These 2 opts have isomorphic value data structures,
@@ -6702,12 +6727,9 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
/* Fill in "arg.prim.sspp_addr": */
alen = ptr + len - curr;
- after = inet_set_faddress(desc->sfamily,
- (inet_address*) (&arg.prim.sspp_addr),
- curr, &alen);
- if (after == NULL)
- return -1;
- curr = after;
+ if (inet_set_faddress
+ (desc->sfamily, (inet_address*) (&arg.prim.sspp_addr),
+ &curr, &alen) != NULL) return -1;
proto = IPPROTO_SCTP;
if (eopt == SCTP_OPT_PRIMARY_ADDR)
@@ -6733,7 +6755,6 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
case SCTP_OPT_PEER_ADDR_PARAMS:
{
ErlDrvSizeT alen;
- char *after;
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_FLAGS
int eflags, cflags, hb_enable, hb_disable,
pmtud_enable, pmtud_disable;
@@ -6748,12 +6769,9 @@ static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
/* Fill in "pap.spp_address": */
alen = ptr + len - curr;
- after = inet_set_faddress(desc->sfamily,
- (inet_address*) (&arg.pap.spp_address),
- curr, &alen);
- if (after == NULL)
- return -1;
- curr = after;
+ if (inet_set_faddress
+ (desc->sfamily, (inet_address*) (&arg.pap.spp_address),
+ &curr, &alen) != NULL) return -1;
CHKLEN(curr, 4 + 2 + 3*4);
@@ -7740,7 +7758,7 @@ static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc,
struct sctp_paddrparams ap;
unsigned int sz = sizeof(ap);
int n;
- char *after;
+ char *before, *xerror;
ErlDrvSizeT alen;
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
@@ -7748,13 +7766,22 @@ static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc,
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
alen = buflen;
- after = inet_set_faddress(desc->sfamily,
- (inet_address*) (&ap.spp_address),
- buf, &alen);
- if (after == NULL) RETURN_ERROR(spec, -EINVAL);
- buflen -= after - buf;
- buf = after;
-
+ before = buf;
+ xerror =
+ inet_set_faddress
+ (desc->sfamily, (inet_address*) (&ap.spp_address),
+ &buf, &alen);
+ if (xerror != NULL) {
+#ifdef EAFNOSUPPORT
+ if (xerror == str_eafnosupport) {
+ RETURN_ERROR(spec, -EAFNOSUPPORT);
+ }
+#else
+ RETURN_ERROR(spec, -EINVAL);
+#endif
+ }
+ buflen -= buf - before;
+
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_PEER_ADDR_PARAMS,
&ap, &sz) < 0) continue;
/* Fill in the response: */
@@ -7980,7 +8007,7 @@ static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc,
{
struct sctp_paddrinfo pai;
unsigned int sz = sizeof(pai);
- char *after;
+ char *before, *xerror;
ErlDrvSizeT alen;
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
@@ -7988,13 +8015,22 @@ static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc,
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
alen = buflen;
- after = inet_set_faddress(desc->sfamily,
- (inet_address*) (&pai.spinfo_address),
- buf, &alen);
- if (after == NULL) RETURN_ERROR(spec, -EINVAL);
- buflen -= after - buf;
- buf = after;
-
+ before = buf;
+ xerror =
+ inet_set_faddress
+ (desc->sfamily, (inet_address*) (&pai.spinfo_address),
+ &buf, &alen);
+ if (xerror != NULL) {
+#ifdef EAFNOSUPPORT
+ if (xerror == str_eafnosupport) {
+ RETURN_ERROR(spec, -EAFNOSUPPORT);
+ }
+#else
+ RETURN_ERROR(spec, -EINVAL);
+#endif
+ }
+ buflen -= buf - before;
+
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_GET_PEER_ADDR_INFO,
&pai, &sz) < 0) continue;
/* Fill in the response: */
@@ -8511,15 +8547,16 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
}
case INET_REQ_SETPEER: { /* set fake peername Port Address */
+ char *xerror;
if (len == 0) {
desc->peer_ptr = NULL;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
else if (len < 2)
return ctl_error(EINVAL, rbuf, rsize);
- else if (inet_set_faddress
- (desc->sfamily, &desc->peer_addr, buf, &len) == NULL)
- return ctl_error(EINVAL, rbuf, rsize);
+ else if ((xerror = inet_set_faddress
+ (desc->sfamily, &desc->peer_addr, &buf, &len)) != NULL)
+ return ctl_xerror(xerror, rbuf, rsize);
else {
desc->peer_ptr = &desc->peer_addr;
desc->peer_addr_len = (SOCKLEN_T) len;
@@ -8585,15 +8622,16 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
}
case INET_REQ_SETNAME: { /* set fake sockname Port Address */
+ char *xerror;
if (len == 0) {
desc->name_ptr = NULL;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
else if (len < 2)
return ctl_error(EINVAL, rbuf, rsize);
- else if (inet_set_faddress
- (desc->sfamily, &desc->name_addr, buf, &len) == NULL)
- return ctl_error(EINVAL, rbuf, rsize);
+ else if ((xerror = inet_set_faddress
+ (desc->sfamily, &desc->name_addr, &buf, &len)) != NULL)
+ return ctl_xerror(xerror, rbuf, rsize);
else {
desc->name_ptr = &desc->name_addr;
desc->name_addr_len = (SOCKLEN_T) len;
@@ -8602,7 +8640,7 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
}
case INET_REQ_BIND: { /* bind socket */
- char tbuf[2];
+ char tbuf[2], *xerror;
inet_address local;
int port;
@@ -8613,8 +8651,9 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
if (desc->state != INET_STATE_OPEN)
return ctl_xerror(EXBADPORT, rbuf, rsize);
- if (inet_set_faddress(desc->sfamily, &local, buf, &len) == NULL)
- return ctl_error(EINVAL, rbuf, rsize);
+ if ((xerror = inet_set_faddress
+ (desc->sfamily, &local, &buf, &len)) != NULL)
+ return ctl_xerror(xerror, rbuf, rsize);
if (IS_SOCKET_ERROR(sock_bind(desc->s,(struct sockaddr*) &local, len)))
return ctl_error(sock_errno(), rbuf, rsize);
@@ -9081,10 +9120,6 @@ static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData e, unsigned int cmd,
case INET_AF_INET6:
domain = AF_INET6;
break;
-#else
- case INET_AF_INET6:
- return ctl_xerror("eafnosupport", rbuf, rsize);
- break;
#endif
#ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL:
@@ -9092,7 +9127,7 @@ static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData e, unsigned int cmd,
break;
#endif
default:
- return ctl_error(EINVAL, rbuf, rsize);
+ return ctl_xerror(str_eafnosupport, rbuf, rsize);
}
if (buf[1] != INET_TYPE_STREAM) return ctl_error(EINVAL, rbuf, rsize);
return inet_ctl_open(INETP(desc), domain, SOCK_STREAM, rbuf, rsize);
@@ -9112,10 +9147,6 @@ static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData e, unsigned int cmd,
case INET_AF_INET6:
domain = AF_INET6;
break;
-#else
- case INET_AF_INET6:
- return ctl_xerror("eafnosupport", rbuf, rsize);
- break;
#endif
#ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL:
@@ -9123,7 +9154,7 @@ static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData e, unsigned int cmd,
break;
#endif
default:
- return ctl_error(EINVAL, rbuf, rsize);
+ return ctl_xerror(str_eafnosupport, rbuf, rsize);
}
if (buf[1] != INET_TYPE_STREAM) return ctl_error(EINVAL, rbuf, rsize);
@@ -9156,7 +9187,7 @@ static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData e, unsigned int cmd,
case INET_REQ_CONNECT: { /* do async connect */
int code;
- char tbuf[2];
+ char tbuf[2], *xerror;
unsigned timeout;
DEBUGF(("tcp_inet_ctl(%ld): CONNECT\r\n", (long)desc->inet.port));
@@ -9173,9 +9204,9 @@ static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData e, unsigned int cmd,
timeout = get_int32(buf);
buf += 4;
len -= 4;
- if (inet_set_faddress
- (desc->inet.sfamily, &desc->inet.remote, buf, &len) == NULL)
- return ctl_error(EINVAL, rbuf, rsize);
+ if ((xerror = inet_set_faddress
+ (desc->inet.sfamily, &desc->inet.remote, &buf, &len)) != NULL)
+ return ctl_xerror(xerror, rbuf, rsize);
code = sock_connect(desc->inet.s,
(struct sockaddr*) &desc->inet.remote, len);
@@ -10955,16 +10986,12 @@ static ErlDrvSSizeT packet_inet_ctl(ErlDrvData e, unsigned int cmd, char* buf,
case INET_AF_INET: af = AF_INET; break;
#if defined(HAVE_IN6) && defined(AF_INET6)
case INET_AF_INET6: af = AF_INET6; break;
-#else
- case INET_AF_INET6:
- return ctl_xerror("eafnosupport", rbuf, rsize);
- break;
#endif
#ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL: af = AF_UNIX; break;
#endif
default:
- return ctl_error(EINVAL, rbuf, rsize);
+ return ctl_xerror(str_eafnosupport, rbuf, rsize);
}
switch (buf[1]) {
case INET_TYPE_STREAM: type = SOCK_STREAM; break;
@@ -11008,16 +11035,12 @@ static ErlDrvSSizeT packet_inet_ctl(ErlDrvData e, unsigned int cmd, char* buf,
case INET_AF_INET: af = AF_INET; break;
#if defined(HAVE_IN6) && defined(AF_INET6)
case INET_AF_INET6: af = AF_INET6; break;
-#else
- case INET_AF_INET6:
- return ctl_xerror("eafnosupport", rbuf, rsize);
- break;
#endif
#ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL: af = AF_UNIX; break;
#endif
default:
- return ctl_error(EINVAL, rbuf, rsize);
+ return ctl_xerror(str_eafnosupport, rbuf, rsize);
}
switch (buf[1]) {
case INET_TYPE_STREAM: type = SOCK_STREAM; break;
@@ -11085,6 +11108,7 @@ static ErlDrvSSizeT packet_inet_ctl(ErlDrvData e, unsigned int cmd, char* buf,
#ifdef HAVE_SCTP
if (IS_SCTP(desc)) {
inet_address remote;
+ char *xerror;
if (IS_CONNECTING(desc))
return ctl_error(EINVAL, rbuf, rsize);
@@ -11096,8 +11120,9 @@ static ErlDrvSSizeT packet_inet_ctl(ErlDrvData e, unsigned int cmd, char* buf,
/* For SCTP, we do not set the peer's addr in desc->remote, as
multiple peers are possible: */
- if (inet_set_faddress(desc->sfamily, &remote, buf, &len) == NULL)
- return ctl_error(EINVAL, rbuf, rsize);
+ if ((xerror = inet_set_faddress
+ (desc->sfamily, &remote, &buf, &len)) != NULL)
+ return ctl_xerror(xerror, rbuf, rsize);
sock_select(desc, FD_CONNECT, 1);
code = sock_connect(desc->s, &remote.sa, len);
@@ -11133,12 +11158,13 @@ static ErlDrvSSizeT packet_inet_ctl(ErlDrvData e, unsigned int cmd, char* buf,
else if (len < 6)
return ctl_error(EINVAL, rbuf, rsize);
else {
+ char *xerror;
/* Ignore timeout */
buf += 4;
len -= 4;
- if (inet_set_faddress
- (desc->sfamily, &desc->remote, buf, &len) == NULL)
- return ctl_error(EINVAL, rbuf, rsize);
+ if ((xerror = inet_set_faddress
+ (desc->sfamily, &desc->remote, &buf, &len)) != NULL)
+ return ctl_xerror(xerror, rbuf, rsize);
code = sock_connect(desc->s,
(struct sockaddr*) &desc->remote, len);
@@ -11202,11 +11228,13 @@ static ErlDrvSSizeT packet_inet_ctl(ErlDrvData e, unsigned int cmd, char* buf,
while (curr < buf+len)
{
+ char *xerror;
/* List item format: see "inet_set_faddress": */
ErlDrvSizeT alen = buf + len - curr;
- curr = inet_set_faddress(desc->sfamily, &addr, curr, &alen);
- if (curr == NULL)
- return ctl_error(EINVAL, rbuf, rsize);
+ xerror = inet_set_faddress
+ (desc->sfamily, &addr, &curr, &alen);
+ if (xerror != NULL)
+ return ctl_xerror(xerror, rbuf, rsize);
/* Invoke the call: */
if (p_sctp_bindx(desc->s, (struct sockaddr *)&addr, 1,
@@ -11325,6 +11353,7 @@ static void packet_inet_command(ErlDrvData e, char* buf, ErlDrvSizeT len)
inet_descriptor* desc = INETP(udesc);
char* ptr = buf;
char* qtr;
+ char* xerror;
ErlDrvSizeT sz;
int code;
inet_address other;
@@ -11387,9 +11416,10 @@ static void packet_inet_command(ErlDrvData e, char* buf, ErlDrvSizeT len)
/* UDP socket. Even if it is connected, there is an address prefix
here -- ignored for connected sockets: */
sz = len;
- qtr = inet_set_faddress(desc->sfamily, &other, ptr, &sz);
- if (qtr == NULL) {
- inet_reply_error(desc, EINVAL);
+ qtr = ptr;
+ xerror = inet_set_faddress(desc->sfamily, &other, &qtr, &sz);
+ if (xerror != NULL) {
+ inet_reply_error_am(desc, driver_mk_atom(xerror));
return;
}
len -= (qtr - ptr);
@@ -11975,7 +12005,7 @@ void erts_sock_close(erts_sock_t socket)
int erts_sock_connect(erts_sock_t socket, byte *ip_addr, int len, Uint16 port)
{
SOCKET s = (SOCKET) socket;
- char buf[2 + 4];
+ char buf[2 + 4], *p;
ErlDrvSizeT blen = 6;
inet_address addr;
@@ -11985,7 +12015,8 @@ int erts_sock_connect(erts_sock_t socket, byte *ip_addr, int len, Uint16 port)
put_int16(port, buf);
memcpy((void *) (buf + 2), (void *) ip_addr, 4);
- if (!inet_set_address(AF_INET, &addr, buf, &blen))
+ p = buf;
+ if (inet_set_address(AF_INET, &addr, &p, &blen) != NULL)
return 0;
if (IS_SOCKET_ERROR
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 16:56:15 +0000