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author | Raimo Niskanen <raimo@erlang.org> | 2013-11-05 15:52:56 +0100 |
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committer | Raimo Niskanen <raimo@erlang.org> | 2013-11-07 14:06:45 +0100 |
commit | bb52546e9a671ed0fd55d2e5274f299a853bed51 (patch) | |
tree | dfa6f2cc7761e0e01e79753a5aa484d1fe27b2c8 /erts/emulator/drivers | |
parent | abac2eda110a33d8310c0f9cc152d91de37f731d (diff) | |
download | otp-bb52546e9a671ed0fd55d2e5274f299a853bed51.tar.gz otp-bb52546e9a671ed0fd55d2e5274f299a853bed51.tar.bz2 otp-bb52546e9a671ed0fd55d2e5274f299a853bed51.zip |
Implement prim_inet:socknames/1,2 and prim_inet:peernames/1,2
Diffstat (limited to 'erts/emulator/drivers')
-rw-r--r-- | erts/emulator/drivers/common/inet_drv.c | 225 |
1 files changed, 217 insertions, 8 deletions
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c index 60db50e80a..8d26adfa63 100644 --- a/erts/emulator/drivers/common/inet_drv.c +++ b/erts/emulator/drivers/common/inet_drv.c @@ -417,13 +417,44 @@ static unsigned long one_value = 1; # define sctp_adaptation_layer_event sctp_adaption_layer_event #endif -#ifdef __GNUC__ +#if defined(__GNUC__) && defined(HAVE_SCTP_BINDX) static typeof(sctp_bindx) *p_sctp_bindx = NULL; +#else +static int (*p_sctp_bindx) + (int sd, struct sockaddr *addrs, int addrcnt, int flags) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_PEELOFF) static typeof(sctp_peeloff) *p_sctp_peeloff = NULL; #else -static int (*p_sctp_bindx)(int sd, struct sockaddr *addrs, - int addrcnt, int flags) = NULL; -static int (*p_sctp_peeloff)(int sd, sctp_assoc_t assoc_id) = NULL; +static int (*p_sctp_peeloff) + (int sd, sctp_assoc_t assoc_id) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_GETLADDRS) +static typeof(sctp_getladdrs) *p_sctp_getladdrs = NULL; +#else +static int (*p_sctp_getladdrs) + (int sd, sctp_assoc_t assoc_id, struct sockaddr **ss) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_FREELADDRS) +static typeof(sctp_freeladdrs) *p_sctp_freeladdrs = NULL; +#else +static void (*p_sctp_freeladdrs)(struct sockaddr *addrs) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_GETPADDRS) +static typeof(sctp_getpaddrs) *p_sctp_getpaddrs = NULL; +#else +static int (*p_sctp_getpaddrs) + (int sd, sctp_assoc_t assoc_id, struct sockaddr **ss) = NULL; +#endif + +#if defined(__GNUC__) && defined(HAVE_SCTP_FREEPADDRS) +static typeof(sctp_freepaddrs) *p_sctp_freepaddrs = NULL; +#else +static void (*p_sctp_freepaddrs)(struct sockaddr *addrs) = NULL; #endif #endif /* #if defined(HAVE_SCTP_H) */ @@ -593,7 +624,7 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n) #define INET_F_BUSY 0x0080 #define INET_F_MULTI_CLIENT 0x0100 /* Multiple clients for one descriptor, i.e. multi-accept */ -/* One numberspace for *_REC_* so if an e.g UDP request is issued +/* One numberspace for *_REQ_* so if an e.g UDP request is issued ** for a TCP socket, the driver can protest. */ #define INET_REQ_OPEN 1 @@ -624,6 +655,8 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n) #define INET_REQ_ACCEPT 26 #define INET_REQ_LISTEN 27 #define INET_REQ_IGNOREFD 28 +#define INET_REQ_GETLADDRS 29 +#define INET_REQ_GETPADDRS 30 /* TCP requests */ /* #define TCP_REQ_ACCEPT 40 MOVED */ @@ -3658,9 +3691,27 @@ static int inet_init() /* Check the size of SCTP AssocID -- currently both this driver and the Erlang part require 32 bit: */ ASSERT(sizeof(sctp_assoc_t)==ASSOC_ID_LEN); -# if defined(HAVE_SCTP_BINDX) && defined (HAVE_SCTP_PEELOFF) +# if defined(HAVE_SCTP_BINDX) p_sctp_bindx = sctp_bindx; +# if defined(HAVE_SCTP_PEELOFF) p_sctp_peeloff = sctp_peeloff; +# else + p_sctp_peeloff = NULL; +# endif +# if defined(HAVE_SCTP_GETLADDRS) && defined(HAVE_SCTP_FREELADDRS) + p_sctp_getladdrs = sctp_getladdrs; + p_sctp_freeladdrs = sctp_freeladdrs; +# else + p_sctp_getladdrs = NULL; + p_sctp_freeladdrs = NULL; +# endif +# if defined(HAVE_SCTP_GETPADDRS) && defined(HAVE_SCTP_FREEPADDRS) + p_sctp_getpaddrs = sctp_getpaddrs; + p_sctp_freepaddrs = sctp_freepaddrs; +# else + p_sctp_getpaddrs = NULL; + p_sctp_freepaddrs = NULL; +# endif inet_init_sctp(); add_driver_entry(&sctp_inet_driver_entry); # else @@ -3675,12 +3726,36 @@ static int inet_init() void *ptr; if (erts_sys_ddll_sym(h_libsctp, "sctp_bindx", &ptr) == 0) { p_sctp_bindx = ptr; - inet_init_sctp(); - add_driver_entry(&sctp_inet_driver_entry); if (erts_sys_ddll_sym(h_libsctp, "sctp_peeloff", &ptr) == 0) { p_sctp_peeloff = ptr; } + else p_sctp_peeloff = NULL; + if (erts_sys_ddll_sym(h_libsctp, "sctp_getladdrs", &ptr) == 0) { + p_sctp_getladdrs = ptr; + } + else p_sctp_getladdrs = NULL; + if (erts_sys_ddll_sym(h_libsctp, "sctp_freeladdrs", &ptr) == 0) { + p_sctp_freeladdrs = ptr; + } + else { + p_sctp_freeladdrs = NULL; + p_sctp_getladdrs = NULL; + } + if (erts_sys_ddll_sym(h_libsctp, "sctp_getpaddrs", &ptr) == 0) { + p_sctp_getpaddrs = ptr; + } + else p_sctp_getpaddrs = NULL; + if (erts_sys_ddll_sym(h_libsctp, "sctp_freepaddrs", &ptr) == 0) { + p_sctp_freepaddrs = ptr; + } + else { + p_sctp_freepaddrs = NULL; + p_sctp_getpaddrs = NULL; + } + inet_init_sctp(); + add_driver_entry(&sctp_inet_driver_entry); } + else p_sctp_bindx = NULL; } } # endif @@ -3860,6 +3935,74 @@ static int inet_get_address(int family, char* dst, inet_address* src, unsigned i return -1; } +/* Same as the above, but take family from the address structure, +** and advance the address pointer to the next address +** according to the size of the current, +** and return the resulting encoded size +*/ +static int inet_address_to_erlang(char *dst, inet_address **src) { + short port; + + switch ((*src)->sa.sa_family) { + case AF_INET: + if (dst) { + dst[0] = INET_AF_INET; + port = sock_ntohs((*src)->sai.sin_port); + put_int16(port, dst+1); + sys_memcpy(dst+1+2, (char *) &(*src)->sai.sin_addr, 4); + } + (*src) = (inet_address *) (&(*src)->sai + 1); + return 1 + 2 + 4; +#if defined(HAVE_IN6) && defined(AF_INET6) + case AF_INET6: + if (dst) { + dst[0] = INET_AF_INET6; + port = sock_ntohs((*src)->sai6.sin6_port); + put_int16(port, dst+1); + sys_memcpy(dst+1+2, (char *) &(*src)->sai6.sin6_addr, 16); + } + (*src) = (inet_address *) (&(*src)->sai6 + 1); + return 1 + 2 + 16; +#endif + default: + return -1; + } +} + +/* Encode n encoded addresses from addrs in the result buffer +*/ +static ErlDrvSizeT reply_inet_addrs +(int n, inet_address *addrs, char **rbuf, ErlDrvSizeT rsize) { + inet_address *ia; + int i, s; + ErlDrvSizeT rlen; + + if (IS_SOCKET_ERROR(n)) return ctl_error(sock_errno(), rbuf, rsize); + if (n == 0) return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize); + + /* Calculate result length */ + rlen = 1; + ia = addrs; + for (i = 0; i < n; i++) { + s = inet_address_to_erlang(NULL, &ia); + if (s < 0) break; + rlen += s; + } + + if (rlen > rsize) (*rbuf) = ALLOC(rlen); + + (*rbuf)[0] = INET_REP_OK; + rlen = 1; + ia = addrs; + for (i = 0; i < n; i++) { + s = inet_address_to_erlang((*rbuf)+rlen, &ia); + if (s < 0) break; + rlen += s; + } + + return rlen; +} + static void desc_close(inet_descriptor* desc) { if (desc->s != INVALID_SOCKET) { @@ -7879,6 +8022,39 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf, return ctl_reply(INET_REP_OK, tbuf, strlen(tbuf), rbuf, rsize); } + case INET_REQ_GETPADDRS: { + DEBUGF(("inet_ctl(%ld): INET_GETPADDRS\r\n", (long)desc->port)); + + if (len != 4) return ctl_error(EINVAL, rbuf, rsize); + + if (! IS_OPEN(desc)) return ctl_xerror(EXBADPORT, rbuf, rsize); + if (! IS_BOUND(desc)) return ctl_xerror(EXBADSEQ, rbuf, rsize); + +#ifdef HAVE_SCTP + if (IS_SCTP(desc) && p_sctp_getpaddrs) { + struct sockaddr *sa; + Uint32 assoc_id; + int n; + ErlDrvSizeT rlen; + + assoc_id = get_int32(buf); + n = p_sctp_getpaddrs(desc->s, assoc_id, &sa); + rlen = reply_inet_addrs(n, (inet_address *) sa, rbuf, rsize); + if (n > 0) p_sctp_freepaddrs(sa); + return rlen; + } +#endif + { /* Fallback to sock_peer */ + inet_address addr; + unsigned int sz; + int i; + + sz = sizeof(addr); + i = sock_peer(desc->s, (struct sockaddr *) &addr, &sz); + return reply_inet_addrs(i >= 0 ? 1 : i, &addr, rbuf, rsize); + } + } + case INET_REQ_PEER: { /* get peername */ char tbuf[sizeof(inet_address)]; inet_address peer; @@ -7915,6 +8091,39 @@ static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf, } } + case INET_REQ_GETLADDRS: { + DEBUGF(("inet_ctl(%ld): INET_GETLADDRS\r\n", (long)desc->port)); + + if (len != 4) return ctl_error(EINVAL, rbuf, rsize); + + if (! IS_OPEN(desc)) return ctl_xerror(EXBADPORT, rbuf, rsize); + if (! IS_BOUND(desc)) return ctl_xerror(EXBADSEQ, rbuf, rsize); + +#ifdef HAVE_SCTP + if (IS_SCTP(desc) && p_sctp_getladdrs) { + struct sockaddr *sa; + Uint32 assoc_id; + int n; + ErlDrvSizeT rlen; + + assoc_id = get_int32(buf); + n = p_sctp_getladdrs(desc->s, assoc_id, &sa); + rlen = reply_inet_addrs(n, (inet_address *) sa, rbuf, rsize); + if (n > 0) p_sctp_freeladdrs(sa); + return rlen; + } +#endif + { /* Fallback to sock_name */ + inet_address addr; + unsigned int sz; + int i; + + sz = sizeof(addr); + i = sock_name(desc->s, (struct sockaddr *) &addr, &sz); + return reply_inet_addrs(i >= 0 ? 1 : i, &addr, rbuf, rsize); + } + } + case INET_REQ_NAME: { /* get sockname */ char tbuf[sizeof(inet_address)]; inet_address name; |