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/*
* Copyright (C) 2017-2024 Alibaba Group Holding Limited
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <stdarg.h>
#include <aos/aos.h>
#include "lwip/opt.h"
#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */
#include "lwip/sockets.h"
#include "lwip/api.h"
#include "lwip/sys.h"
#include "lwip/igmp.h"
#include "arpa/inet.h"
#include "lwip/tcp.h"
#include "lwip/raw.h"
#include "lwip/udp.h"
#include "lwip/memp.h"
#include "lwip/pbuf.h"
#include "lwip/priv/tcpip_priv.h"
#include "lwip/netdb.h"
//#include "lwip/ip_addr.h"
#if LWIP_CHECKSUM_ON_COPY
#include "lwip/inet_chksum.h"
#endif
#include <string.h>
#include "sal2lwip.h"
#include "sal.h"
/*
* Options and types related to multicast membership
*/
#define IP_ADD_MEMBERSHIP 3
#define IP_DROP_MEMBERSHIP 4
#define IP_MULTICAST_TTL 5
#define IP_MULTICAST_IF 6
#define IP_MULTICAST_LOOP 7
#define SAL_SO_SNDRCVTIMEO_GET_MS(optval) ((((const struct timeval *)(optval))->tv_sec * 1000U) + (((const struct timeval *)(optval))->tv_usec / 1000U))
#define SAL_TAG "sals"
#ifdef SAL_USE_DEBUG
#define SAL_DEBUG(format, ...) LOGD(SAL_TAG, format, ##__VA_ARGS__)
#define SAL_ERROR(format, ...) LOGE(SAL_TAG, format, ##__VA_ARGS__)
#define SAL_ASSERT(msg, assertion) do { if (!(assertion)) { \
LOGE(SAL_TAG, msg);} \
} while (0)
#else
#define SAL_DEBUG(format, ...)
#define SAL_ERROR(format, ...)
#define SAL_ASSERT(msg, assertion)
#endif
#define SAL_SOCKET_MAX_PAYLOAD_SIZE 1512
#define SAL_SOCKET_IP4_ANY_ADDR "0.0.0.0"
#define SAL_SOCKET_IP4_ADDR_LEN 16
//#define NETCONN_TYPE_IPV6 0x08
//#define NETCONNTYPE_ISIPV6(t) (((t)&NETCONN_TYPE_IPV6) != 0)
#define SOCK_ADDR_TYPE_MATCH(name, sock) \
((((name)->sa_family == AF_INET) && !(NETCONNTYPE_ISIPV6((sock)->conn->type))) || \
(((name)->sa_family == AF_INET6) && (NETCONNTYPE_ISIPV6((sock)->conn->type))))
#define SOCK_ADDR_TYPE_MATCH_OR_UNSPEC(name, sock) (((name)->sa_family == AF_UNSPEC) || \
SOCK_ADDR_TYPE_MATCH(name, sock))
#define NUM_SOCKETS MEMP_NUM_NETCONN
#define NUM_EVENTS MEMP_NUM_NETCONN
#define SAL_DRAIN_SENDMBOX_WAIT_TIME 50
#define SAL_EVENT_OFFSET (NUM_SOCKETS + SAL_SOCKET_OFFSET)
#ifndef SELWAIT_T
#define SELWAIT_T uint8_t
#endif
#define IPADDR_BROADCAST_STRING "255.255.255.255"
#define IP4ADDR_PORT_TO_SOCKADDR(sin, ipaddr, port) do { \
(sin)->sin_len = sizeof(struct sockaddr_in); \
(sin)->sin_family = AF_INET; \
(sin)->sin_port = sal_htons((port)); \
inet_addr_from_ip4addr(&(sin)->sin_addr, ipaddr); \
memset((sin)->sin_zero, 0, SIN_ZERO_LEN); }while(0)
#define SOCKADDR4_TO_IP4ADDR_PORT(sin, ipaddr, port) do { \
inet_addr_to_ip4addr(ip_2_ip4(ipaddr), &((sin)->sin_addr)); \
(port) = sal_htons((sin)->sin_port); }while(0)
#define IPADDR_PORT_TO_SOCKADDR(sockaddr, ipaddr, port) \
IP4ADDR_PORT_TO_SOCKADDR((struct sockaddr_in*)(void*)(sockaddr), ip_2_ip4(ipaddr), port)
int ip4addr_aton(const char *cp, ip4_addr_t *addr);
static int sal_selscan(int maxfdp1, fd_set *readset_in, fd_set *writeset_in,
fd_set *exceptset_in, fd_set *readset_out,
fd_set *writeset_out, fd_set *exceptset_out);
static struct sal_sock *tryget_socket(int s);
static struct sal_event *tryget_event(int s);
#if SAL_PACKET_SEND_MODE_ASYNC
static void sal_packet_output(void *arg);
#endif
static int alloc_socket(sal_netconn_t *newconn, int accepted);
static void free_socket(struct sal_sock *sock);
struct sal_event {
uint64_t counts;
int used;
int reads;
int writes;
/** semaphore to wake up a task waiting for select */
sal_sem_t *psem;
};
/** Contains all internal pointers and states used for a socket */
struct sal_sock {
/** sockets currently are built on netconns, each socket has one netconn */
/*conn may delete in sal*/
sal_netconn_t *conn;
/** data that was left from the previous read */
void *lastdata;
/** offset in the data that was left from the previous read */
uint16_t lastoffset;
/** number of times data was received, set by event_callback(),
tested by the receive and select functions */
int16_t rcvevent;
/** number of times data was ACKed (free send buffer),
set by event_callback(), tested by select */
uint16_t sendevent;
/** error happened for this socket, set by event_callback(),
tested by select */
uint16_t errevent;
/** last error that occurred on this socket (in fact,
all our errnos fit into an uint8_t) */
uint8_t err;
/** counter of how many threads are waiting for this socket using select */
SELWAIT_T select_waiting;
};
typedef struct sal_netbuf {
void *payload;
u16_t len;
ip_addr_t addr;
u16_t port;
} sal_netbuf_t;
typedef struct sal_outputbuf {
void *payload;
u16_t len;
u16_t remote_port;
char remote_ip[16];
} sal_outputbuf_t;
/** Description for a task waiting in select */
struct sal_select_cb {
/** Pointer to the next waiting task */
struct sal_select_cb *next;
/** Pointer to the previous waiting task */
struct sal_select_cb *prev;
/** readset passed to select */
fd_set *readset;
/** writeset passed to select */
fd_set *writeset;
/** unimplemented: exceptset passed to select */
fd_set *exceptset;
/** don't signal the same semaphore twice: set to 1 when signalled */
int sem_signalled;
/** semaphore to wake up a task waiting for select */
//SELECT_SEM_T sem;
/** semaphore to wake up a task waiting for select */
sal_sem_t *psem;
};
/** A struct sockaddr replacement that has the same alignment as sockaddr_in/
* sockaddr_in6 if instantiated.
*/
union sockaddr_aligned {
struct sockaddr sa;
#if LWIP_IPV6
struct sockaddr_in6 sin6;
#endif /* LWIP_IPV6 */
#if LWIP_IPV4
struct sockaddr_in sin;
#endif /* LWIP_IPV4 */
};
#define IS_SOCK_ADDR_LEN_VALID(namelen) \
((namelen) == sizeof(struct sockaddr_in))
#ifndef set_errno
#define set_errno(err) do { if (err) { errno = (err); } } while(0)
#endif
#define sock_set_errno(sk,e) do { \
const int sockerr = (e); \
sk->err = (u8_t)sockerr; \
set_errno(sockerr); \
} while (0)
/** The global array of available sockets */
static struct sal_sock sockets[NUM_SOCKETS];
/** The global array of available events */
static struct sal_event events[NUM_EVENTS];
/** The global list of tasks waiting for select */
static struct sal_select_cb *select_cb_list;
/** This counter is increased from sal_select when the list is changed
and checked in event_callback to see if it has changed. */
static volatile int select_cb_ctr;
/* From http://www.iana.org/assignments/port-numbers:
"The Dynamic and/or Private Ports are those from 49152 through 65535" */
#define LOCAL_PORT_RANGE_START 0xc000
#define LOCAL_PORT_RANGE_END 0xffff
#define ENSURE_LOCAL_PORT_RANGE(port) ((u16_t)(((port) & ~LOCAL_PORT_RANGE_START) + LOCAL_PORT_RANGE_START))
struct udp_pcb *sal_udp_pcbs;
struct tcp_pcb *sal_tcp_pcbs;
sal_mutex_t lock_sal_core;
#define LOCK_SAL_CORE sal_mutex_lock(&lock_sal_core)
#define UNLOCK_SAL_CORE sal_mutex_unlock(&lock_sal_core)
void sal_deal_event(int s, enum netconn_evt evt);
static bool sal_init_done = 0;
#if SAL_PACKET_SEND_MODE_ASYNC
static bool sal_send_async_running = 0;
#endif
static u16_t sal_tcp_new_port(void)
{
static u16_t tcp_port = 0;
u16_t n = 0;
struct tcp_pcb *pcb = NULL;
if (tcp_port == 0) {
tcp_port = ENSURE_LOCAL_PORT_RANGE(rand());
}
again:
if (tcp_port++ == LOCAL_PORT_RANGE_END) {
tcp_port = LOCAL_PORT_RANGE_START;
}
for (pcb = sal_tcp_pcbs; pcb != NULL; pcb = pcb->next) {
if (pcb->local_port == tcp_port) {
if (++n > (LOCAL_PORT_RANGE_END - LOCAL_PORT_RANGE_START)) {
return 0;
}
goto again;
}
}
return tcp_port;
}
static err_t sal_tcp_bind(struct tcp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port)
{
struct tcp_pcb *pstpcb = NULL;
u8_t rebind = 0;
/*for local ip addr is not used for now,
if ip addr is used there is something else need to check link udp_bind*/
if (pcb == NULL) {
return ERR_VAL;
}
for (pstpcb = sal_tcp_pcbs; pstpcb != NULL; pstpcb = pstpcb->next) {
if (pstpcb == pcb) {
rebind = 1;
break;
}
}
if (port == 0) {
port = sal_tcp_new_port();
if (port == 0) {
SAL_ERROR("sal_tcp_bind: out of free tcp ports\n");
return ERR_BUF;
}
} else {
for (pstpcb = sal_tcp_pcbs; pstpcb != NULL; pstpcb = pstpcb->next) {
if (pcb != pstpcb) {
/*By default, we don't allow to bind a port that any other udp pcb is already bound to.
ip add port are matches */
if (pstpcb->local_port == port) {
return ERR_USE;
}
}
}
}
/*TODO ipaddr = null means any addr*/
if (NULL != ipaddr) {
ip_addr_set_ipaddr(&(pcb->local_ip), ipaddr);
}
pcb->local_port = port;
/* pcb not active yet? */
if (rebind == 0) {
/* place the PCB on the active list if not already there */
pcb->next = sal_tcp_pcbs;
sal_tcp_pcbs = pcb;
}
return ERR_OK;
}
static void sal_tcp_remove(struct tcp_pcb *pcb)
{
struct tcp_pcb *pstpcb;
/* pcb to be removed is first in list? */
if (sal_tcp_pcbs == pcb) {
/* make list start at 2nd pcb */
sal_tcp_pcbs = sal_tcp_pcbs->next;
/* pcb not 1st in list */
} else {
for (pstpcb = sal_tcp_pcbs; pstpcb != NULL; pstpcb = pstpcb->next) {
/* find pcb in udp_pcbs list */
if (pstpcb->next != NULL && pstpcb->next == pcb) {
/* remove pcb from list */
pstpcb->next = pcb->next;
break;
}
}
}
free(pcb);
}
static u16_t sal_udp_new_port(void)
{
static u16_t udp_port = 0;
u16_t n = 0;
struct udp_pcb *pcb;
if (udp_port == 0) {
udp_port = ENSURE_LOCAL_PORT_RANGE(rand());
}
again:
if (udp_port++ == LOCAL_PORT_RANGE_END) {
udp_port = LOCAL_PORT_RANGE_START;
}
for (pcb = sal_udp_pcbs; pcb != NULL; pcb = pcb->next) {
if (pcb->local_port == udp_port) {
if (++n > (LOCAL_PORT_RANGE_END - LOCAL_PORT_RANGE_START)) {
return 0;
}
goto again;
}
}
return udp_port;
}
static err_t sal_udp_bind(struct udp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port)
{
struct udp_pcb *pstpcb = NULL;
u8_t rebind = 0;
/*for local ip addr is not used for now,
if ip addr is used there is something else need to check link udp_bind*/
if (pcb == NULL) {
return ERR_VAL;
}
for (pstpcb = sal_udp_pcbs; pstpcb != NULL; pstpcb = pstpcb->next) {
if (pstpcb == pcb) {
rebind = 1;
break;
}
}
if (port == 0) {
port = sal_udp_new_port();
if (port == 0) {
SAL_ERROR("sal_udp_bind: out of free udp ports\n");
return ERR_BUF;
}
} else {
for (pstpcb = sal_udp_pcbs; pstpcb != NULL; pstpcb = pstpcb->next) {
if (pcb != pstpcb) {
/*By default, we don't allow to bind a port that any other udp pcb is already bound to.
ip add port are matches */
if (pstpcb->local_port == port) {
return ERR_USE;
}
}
}
}
/*TODO ipaddr = null means any addr*/
if (NULL != ipaddr) {
ip_addr_set_ipaddr(&(pcb->local_ip), ipaddr);
}
pcb->local_port = port;
/* pcb not active yet? */
if (rebind == 0) {
/* place the PCB on the active list if not already there */
pcb->next = sal_udp_pcbs;
sal_udp_pcbs = pcb;
}
return ERR_OK;
}
static void sal_udp_remove(struct udp_pcb *pcb)
{
struct udp_pcb *pstpcb;
/* pcb to be removed is first in list? */
if (sal_udp_pcbs == pcb) {
/* make list start at 2nd pcb */
sal_udp_pcbs = sal_udp_pcbs->next;
/* pcb not 1st in list */
} else {
for (pstpcb = sal_udp_pcbs; pstpcb != NULL; pstpcb = pstpcb->next) {
/* find pcb in udp_pcbs list */
if (pstpcb->next != NULL && pstpcb->next == pcb) {
/* remove pcb from list */
pstpcb->next = pcb->next;
break;
}
}
}
free(pcb);
}
static void ip4_sockaddr_to_ipstr_port(const struct sockaddr *name, char *ip)
{
struct sockaddr_in *saddr;
union {
uint32_t ip_u32;
uint8_t ip_u8[4];
} ip_u;
if (!name || !ip) {
return;
}
saddr = (struct sockaddr_in *)name;
memset(ip, 0, 16);
/* Convert network order ip_addr to ip str (dot number fomrat) */
ip_u.ip_u32 = (uint32_t)(saddr->sin_addr.s_addr);
snprintf(ip, SAL_SOCKET_IP4_ADDR_LEN, "%d.%d.%d.%d",
ip_u.ip_u8[0], ip_u.ip_u8[1], ip_u.ip_u8[2], ip_u.ip_u8[3]);
ip[SAL_SOCKET_IP4_ADDR_LEN - 1] = '\0';
SAL_DEBUG("Socket address coverted to %s\n", ip);
}
// Caller to ensure a valid ip string
#if 0
static int ipstr_to_u32(char *ipstr, uint32_t *ip32)
{
uint8_t *q = (uint8_t *)ip32, n = 0, stridx = 0, dotnum = 0;
char *p = ipstr;
if (!ipstr || !ip32) {
return -1;
}
for (n = 0, stridx = 0, dotnum = 0;
*p != '\0' && stridx < 15 && dotnum < 4;
stridx++, p++) {
if (*p == '.') {
q[dotnum] = n; // saved in network order
n = 0;
dotnum++;
continue;
}
if (*p < '0' || *p > '9') {
return -1;
}
n = n * 10 + *p - '0';
}
if (dotnum >= 4 || stridx > 15) {
return -1;
} else {
q[dotnum] = n; // the last number
}
return 0;
}
#endif
static void sockaddr_to_ipaddr_port(const struct sockaddr *sockaddr, ip_addr_t *ipaddr, u16_t *port)
{
SOCKADDR4_TO_IP4ADDR_PORT((const struct sockaddr_in *)(const void *)(sockaddr), ipaddr, *port);
#if LWIP_IPV4 && LWIP_IPV6
ipaddr->type = IPADDR_TYPE_V4;
#endif
}
int sal_eventfd(unsigned int initval, int flags)
{
int i;
SAL_ARCH_DECL_PROTECT(lev);
/* allocate a new socket identifier */
for (i = 0; i < NUM_EVENTS; ++i) {
/* Protect socket array */
SAL_ARCH_PROTECT(lev);
if (!events[i].used) {
events[i].used = 1;
events[i].counts = 0;
events[i].reads = 0;
events[i].writes = 0;
events[i].psem = NULL;
SAL_ARCH_UNPROTECT(lev);
return i + SAL_EVENT_OFFSET;
}
SAL_ARCH_UNPROTECT(lev);
}
return -1;
}
static struct sal_event *
tryget_event(int s)
{
s -= SAL_EVENT_OFFSET;
if ((s < 0) || (s >= NUM_EVENTS)) {
return NULL;
}
if (!events[s].used) {
return NULL;
}
return &events[s];
}
/**
* Same as get_socket but doesn't set errno
*
* @param s externally used socket index
* @return struct sal_sock for the socket or NULL if not found
*/
static struct sal_sock *tryget_socket(int s)
{
s -= SAL_SOCKET_OFFSET;
if ((s < 0) || (s >= NUM_SOCKETS)) {
return NULL;
}
if (!sockets[s].conn) {
return NULL;
}
return &sockets[s];
}
static struct sal_sock *get_socket(int s)
{
struct sal_sock *sock;
s -= SAL_SOCKET_OFFSET;
if ((s < 0) || (s >= NUM_SOCKETS)) {
SAL_DEBUG("get_socket(%d): invalid", s + SAL_SOCKET_OFFSET);
set_errno(EBADF);
return NULL;
}
sock = &sockets[s];
if (!sock->conn) {
SAL_DEBUG("get_socket(%d): not active", s + SAL_SOCKET_OFFSET);
set_errno(EBADF);
return NULL;
}
return sock;
}
static int salpcb_new(sal_netconn_t *conn)
{
if (NULL == conn) {
SAL_ERROR("salpcb_new fail invalid input\n");
return -1;
}
if (NULL != conn->pcb.tcp) {
SAL_ERROR("salpcb_new conn %p already have a pcb\n", conn);
return -1;
}
switch (NETCONNTYPE_GROUP(conn->type)) {
case NETCONN_RAW:
conn->pcb.raw = aos_zalloc(sizeof(struct raw_pcb));
if (NULL == conn->pcb.raw) {
return ERR_MEM;
}
break;
case NETCONN_UDP:
conn->pcb.udp = aos_zalloc(sizeof(struct udp_pcb));
if (NULL == conn->pcb.udp) {
return ERR_MEM;
}
break;
case NETCONN_TCP:
conn->pcb.tcp = aos_zalloc(sizeof(struct tcp_pcb));
if (NULL == conn->pcb.tcp) {
return ERR_MEM;
}
break;
default:
return ERR_VAL;
}
return ERR_OK;
}
static void salnetconn_drain(sal_netconn_t *conn)
{
sal_netbuf_t *mem;
if (sal_mbox_valid(&conn->recvmbox)) {
while (sal_mbox_tryfetch(&conn->recvmbox, (void **)(&mem)) != SAL_MBOX_EMPTY) {
if (mem != NULL) {
if (mem->payload) {
free(mem->payload);
mem->payload = NULL;
}
free(mem);
}
}
sal_mbox_free(&conn->recvmbox);
sal_mbox_set_invalid(&conn->recvmbox);
}
#if SAL_PACKET_SEND_MODE_ASYNC
struct sal_sock *sock;
int s;
if (sal_mbox_valid(&conn->sendmbox)) {
s = conn->socket;
sock = get_socket(s);
if (sock->sendevent > 0) {
while (sal_mbox_tryfetch(&conn->sendmbox, (void **)(&mem)) != SAL_MBOX_EMPTY) {
if (mem != NULL) {
if (mem->payload) {
free(mem->payload);
mem->payload = NULL;
}
free(mem);
}
}
sal_mbox_free(&conn->sendmbox);
sal_mbox_set_invalid(&conn->sendmbox);
}
}
#endif
#ifdef SAL_SERVER
if (sal_mbox_valid(&conn->acceptmbox)) {
while (sal_mbox_tryfetch(&conn->acceptmbox, (void **)(&mem)) != SAL_MBOX_EMPTY) {
if (mem != NULL) {
if (mem->payload) {
aos_free(mem->payload);
mem->payload = NULL;
}
aos_free(mem);
}
}
sal_mbox_free(&conn->acceptmbox);
sal_mbox_set_invalid(&conn->acceptmbox);
}
#endif
return;
}
#ifdef SAL_SERVER
static sal_netconn_t *salnetconn_new(enum netconn_type t, bool fromaccept)
#else
static sal_netconn_t *salnetconn_new(enum netconn_type t)
#endif
{
sal_netconn_t *conn;
err_t err = ERR_OK;
conn = (sal_netconn_t *)aos_zalloc(sizeof(sal_netconn_t));
if (conn == NULL) {
SAL_ERROR("salnetconn_new fail to new net conn \n");
return NULL;
}
conn->type = t;
conn->socket = -1;
if (sal_mbox_new(&conn->recvmbox, CONFIG_SAL_DEFAULT_INPUTMBOX_SIZE) != ERR_OK) {
SAL_ERROR("fai to new conn input mail box, size is %d \n", CONFIG_SAL_DEFAULT_INPUTMBOX_SIZE);
goto err;
}
#if SAL_PACKET_SEND_MODE_ASYNC
if (sal_mbox_new(&conn->sendmbox, CONFIG_SAL_DEFAULT_OUTPUTMBOX_SIZE) != ERR_OK) {
SAL_ERROR("fai to new conn input mail box, size is %d \n", CONFIG_SAL_DEFAULT_INPUTMBOX_SIZE);
goto err;
}
#endif
#ifdef SAL_SERVER
if (conn->type == NETCONN_TCP && !fromaccept) {
if (sal_mbox_new(&conn->acceptmbox, CONFIG_SAL_DEFAULT_OUTPUTMBOX_SIZE) != ERR_OK) {
SAL_ERROR("fai to new conn input mail box, size is %d \n", CONFIG_SAL_DEFAULT_INPUTMBOX_SIZE);
goto err;
}
}
#endif
err = salpcb_new(conn);
if (ERR_OK != err) {
SAL_ERROR("salnetconn_new fail to new pcb return value is %d \n", err);
goto err;
}
return conn;
err:
if (sal_mbox_valid(&conn->recvmbox)) {
sal_mbox_free(&conn->recvmbox);
}
#if SAL_PACKET_SEND_MODE_ASYNC
if (sal_mbox_valid(&conn->sendmbox)) {
sal_mbox_free(&conn->sendmbox);
}
#endif
#ifdef SAL_SERVER
if (sal_mbox_valid(&conn->acceptmbox)) {
sal_mbox_free(&conn->acceptmbox);
}
#endif
aos_free(conn);
return NULL;
}
static err_t salnetconn_delete(sal_netconn_t *conn)
{
struct sal_sock *sock;
int s;
if (conn == NULL) {
return ERR_OK;
}
salnetconn_drain(conn);
if (NULL != conn->pcb.tcp) {
switch (NETCONNTYPE_GROUP(conn->type)) {
case NETCONN_TCP:
sal_tcp_remove(conn->pcb.tcp);
break;
case NETCONN_UDP:
sal_udp_remove(conn->pcb.udp);
break;
default:
SAL_ERROR("Unsupported connect type 0x%x\n", conn->type);
break;
}
//already free in sal_tcp_remove & sal_udp_remove
//free(conn->pcb.tcp);
conn->pcb.tcp = NULL;
}
s = conn->socket;
sock = get_socket(s);
if (sock) {
sal_netbuf_t *mem = sock->lastdata;
if (mem != NULL) {
if (mem->payload) {
free(mem->payload);
mem->payload = NULL;
}
free(mem);
}
sock->conn = NULL;
}
free(conn);
conn = NULL;
return ERR_OK;
}
static err_t salnetconn_connect(sal_netconn_t *conn, int8_t *addr, u16_t port)
{
sal_conn_t statconn = {0};
ip_addr_t remoteipaddr, *remoteip = NULL, remoteip_v = {0,};
char *ipv4anyadrr = "0.0.0.0";
err_t err = ERR_OK;
remoteip = &remoteip_v;
if (NULL == conn) {
SAL_ERROR("salnetconn_connect: invalid conn\n");
return ERR_ARG;
}
if (conn->state != NETCONN_NONE) {
SAL_ERROR("salnetconn_connect: socket %d is connect state is %d \n", conn->socket, conn->state);
return ERR_ARG;
}
statconn.fd = conn->socket;
statconn.r_port = port;
statconn.l_port = -1;
statconn.addr = (char *)addr;
if (NULL == addr) {
statconn.addr = ipv4anyadrr;
}
switch (NETCONNTYPE_GROUP(conn->type)) {
case NETCONN_UDP:
if (strcmp(IPADDR_BROADCAST_STRING, statconn.addr) != 0) {
statconn.type = UDP_UNICAST;
} else {
statconn.type = UDP_BROADCAST;
}
if (conn->pcb.udp->local_port == 0) {
statconn.l_port = sal_udp_new_port();
} else {
statconn.l_port = conn->pcb.udp->local_port;
}
err = sal_module_start(&statconn);
if (ERR_OK != err) {
SAL_ERROR("fail to setup udp connect, remote is %s port is %d.\n", statconn.addr, port);
return -1;
}
if (conn->pcb.udp->local_port == 0) {
err = sal_udp_bind(conn->pcb.udp, NULL, statconn.l_port);
if (err != ERR_OK) {
SAL_ERROR("sal_connect udp pcb %p bind local port %d fail.\n", conn->pcb.udp, statconn.l_port);
return err;
}
}
if (ip4addr_aton(statconn.addr, (ip4_addr_t *)ip_2_ip4(&remoteipaddr))) {
memcpy(remoteip, &remoteipaddr, sizeof(ip_addr_t));
}
ip_addr_set_ipaddr(&(conn->pcb.udp->remote_ip), remoteip);
conn->pcb.udp->remote_port = port;
break;
case NETCONN_TCP:
statconn.type = TCP_CLIENT;
err = sal_module_start(&statconn);
if (ERR_OK != err) {
SAL_ERROR("fail to setup tcp connect, remote is %s port is %d.\n", statconn.addr, port);
return -1;
}
if (ip4addr_aton(statconn.addr, (ip4_addr_t *)ip_2_ip4(&remoteipaddr))) {
memcpy(remoteip, &remoteipaddr, sizeof(ip_addr_t));
}
ip_addr_set_ipaddr(&(conn->pcb.tcp->remote_ip), remoteip);
conn->pcb.tcp->remote_port = port;
break;
default:
SAL_ERROR("Unsupported sal connection type.\n");
return ERR_ARG;
}
/*init socket send event*/
#if SAL_PACKET_SEND_MODE_ASYNC
struct sal_sock *sock;
sock = get_socket(conn->socket);
sock->sendevent = CONFIG_SAL_DEFAULT_OUTPUTMBOX_SIZE;
#else
sal_deal_event(conn->socket, NETCONN_EVT_SENDPLUS);
#endif
/* Update sal conn state here */
conn->state = NETCONN_CONNECT;
return ERR_OK;
}
#ifdef SAL_SERVER
static err_t salnetconn_listen(sal_netconn_t *conn)
{
err_t err = ERR_OK;
sal_conn_t statconn = {0};
#ifdef SAL_SERVER
char *srcaddr = IPADDR_ANY_STRING;
#endif
if (NULL == conn || NULL == conn->pcb.tcp) {
return ERR_ARG;
}
if (NETCONNTYPE_GROUP(conn->type) != NETCONN_TCP) {
SAL_ERROR("sal_listen is not conn type is not tcp\n");
return ERR_ARG;
}
if (conn->state == NETCONN_LISTEN) {
return ERR_OK;
}
if (conn->state != NETCONN_NONE) {
SAL_ERROR("socket connect state is %d, can not listen\n", conn->socket);
return ERR_ARG;
}
/*TO DO If local port is 0, what can we do*/
statconn.fd = conn->socket;
#ifdef SAL_SERVER
statconn.addr = srcaddr;
#endif
statconn.l_port = conn->pcb.tcp->local_port;
statconn.type = TCP_SERVER;
err = sal_module_start(&statconn);
if (ERR_OK != err) {
SAL_ERROR("fail to listen %d, local port is %d.\n", conn->socket, statconn.l_port);
return ERR_ARG;
}
conn->state = NETCONN_LISTEN;
return err;
}
#endif
static err_t salnetconn_bind(sal_netconn_t *conn, const ip_addr_t *addr, u16_t port)
{
err_t err = ERR_OK;
#ifdef SAL_SERVER
sal_conn_t statconn = {0};
char *srcaddr = IPADDR_ANY_STRING;
#endif
if (NULL == conn) {
SAL_ERROR("salnetconn_bind: invalid conn\n");
return ERR_ARG;
}
switch (NETCONNTYPE_GROUP(conn->type)) {
case NETCONN_UDP:
err = sal_udp_bind(conn->pcb.udp, addr, port);
if (err != ERR_OK) {
SAL_ERROR("salnetconn_bind sock %d udp bind fail\n.", conn->socket);
return err;
}
#ifdef SAL_SERVER
statconn.fd = conn->socket;
statconn.addr = srcaddr;
statconn.r_port = port; // TODO: remote port now equals to local port
statconn.l_port = port;
statconn.type = UDP_UNICAST;
err = sal_module_start(&statconn);
if (ERR_OK != err) {
SAL_ERROR("fail to setup udp bind, local port is %d.\n", port);
return -1;
}
#endif
break;
case NETCONN_TCP:
err = sal_tcp_bind(conn->pcb.tcp, addr, port);
if (err != ERR_OK) {
SAL_ERROR("salnetconn_bind sock %d tcp bind fail\n.", conn->socket);
return err;
}
break;
case NETCONN_RAW:
default:
/*for now wifi module did not support raw socket yet*/
SAL_ERROR("salnetconn_bind invalid connect type %d.\n", NETCONNTYPE_GROUP(conn->type));
return ERR_VAL;
}
return ERR_OK;
}
static err_t salnetconn_recv_data(sal_netconn_t *conn, sal_netbuf_t **new_buf)
{
int ret = 0;
void *buf = NULL;
if (NULL == conn || NULL == new_buf) {
SAL_ERROR("invalid input\n");
return ERR_ARG;
}
if (!sal_mbox_valid(&conn->recvmbox)) {
SAL_ERROR("socket %d connect invalid recvmbox\n", conn->socket);
return ERR_CONN;
}
if (conn->state == NETCONN_CLOSE) {
ret = sal_arch_mbox_tryfetch(&conn->recvmbox, &buf);
if (ret == SYS_MBOX_EMPTY) {
return ERR_CLSD;
} else {
sal_deal_event(conn->socket, NETCONN_EVT_RCVMINUS);
*new_buf = buf;
return ERR_OK;
}
}
ret = sal_arch_mbox_fetch(&conn->recvmbox, &buf, conn->recv_timeout);
if (ret == SAL_ARCH_TIMEOUT) {
SAL_ERROR("sal recv data time out, socket %d conn %p timeout %d\n", conn->socket, conn, conn->recv_timeout);
return ERR_TIMEOUT;
}
sal_deal_event(conn->socket, NETCONN_EVT_RCVMINUS);
*new_buf = buf;
return ERR_OK;
}
#ifdef SAL_SERVER
static err_t salnetconn_accept(sal_netconn_t *conn, sal_netconn_t **new_conn)
{
void *accept_ptr;
if (NULL == new_conn) {
SAL_ERROR("sal accept Invaild input\n");
return ERR_ARG;
}
LOG("in salnetconn_accept\n");
*new_conn = NULL;
if (NULL == conn || conn->type != NETCONN_TCP) {
SAL_ERROR("sal accept Invaild input\n");
return ERR_ARG;
}
if (!sal_mbox_valid(&conn->acceptmbox)) {
SAL_ERROR("invalid connection to accept box\n");
return ERR_CLSD;
}
if (sal_arch_mbox_fetch(&conn->acceptmbox, &accept_ptr, conn->recv_timeout) == SAL_ARCH_TIMEOUT) {
SAL_ERROR("sal accept connection time out, socket %d conn %p timeout %d\n",
conn->socket, conn, conn->recv_timeout);
return ERR_TIMEOUT;
}
sal_deal_event(conn->socket, NETCONN_EVT_RCVMINUS);
*new_conn = (sal_netconn_t *)accept_ptr;
if (*new_conn == NULL) {
SAL_ERROR("sal fail to accept new connect\n");
return ERR_CLSD;
}
return ERR_OK;
}
err_t salnetconn_getaddr(sal_netconn_t *conn, ip_addr_t *addr, u16_t *port)
{
if (NULL == conn || NULL == addr || NULL == port) {
SAL_ERROR("invalid input\n");
return ERR_ARG;
}
if (conn->type == NETCONN_TCP) {
*addr = conn->pcb.tcp->remote_ip;
*port = conn->pcb.tcp->remote_port;
} else if (conn->type == NETCONN_UDP) {
*addr = conn->pcb.udp->remote_ip;
*port = conn->pcb.udp->remote_port;
} else {
SAL_ERROR("Unsupported connect type 0x%x\n", conn->type);
return ERR_ARG;
}
return ERR_OK;
}
int sal_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
{
struct sal_sock *sock, *nsock;
sal_netconn_t *newconn;
ip_addr_t naddr;
u16_t port = 0;
int newsock;
err_t err;
SAL_ARCH_DECL_PROTECT(lev);
sock = get_socket(s);
if (!sock) {
return -1;
}
LOG("in sal accept\n");
if (netconn_is_nonblocking(sock->conn) && (sock->rcvevent <= 0)) {
SAL_DEBUG("sal_accept(%d): eturning EWOULDBLOCK\n", s);
sock_set_errno(sock, EWOULDBLOCK);
return -1;
}
/* wait for a new connection */
err = salnetconn_accept(sock->conn, &newconn);
if (err != ERR_OK) {
SAL_DEBUG("sal_accept(%d): netconn_acept failed, err=%d\n", s, err);
if (NETCONNTYPE_GROUP(sock->conn->type) != NETCONN_TCP) {
sock_set_errno(sock, EOPNOTSUPP);
} else if (err == ERR_CLSD) {
sock_set_errno(sock, EINVAL);
} else {
sock_set_errno(sock, err_to_errno(err));
}
return -1;
}
SAL_ASSERT("newconn != NULL", newconn != NULL);
newsock = alloc_socket(newconn, 1);
if (newsock == -1) {
salnetconn_delete(newconn);
sock_set_errno(sock, ENFILE);
return -1;
}
SAL_ASSERT("invalid socket index", (newsock >= SAL_SOCKET_OFFSET) && (newsock < NUM_SOCKETS + SAL_SOCKET_OFFSET));
nsock = &sockets[newsock - SAL_SOCKET_OFFSET];
/* See event_callback: If data comes in right away after an accept, even
* though the server task might not have created a new socket yet.
* In that case, newconn->socket is counted down (newconn->socket--),
* so nsock->rcvevent is >= 1 here!
*/
SAL_ARCH_PROTECT(lev);
//nsock->rcvevent += (s16_t)(-1 - newconn->socket);
newconn->socket = newsock;
SAL_ARCH_UNPROTECT(lev);
/* Note that POSIX only requires us to check addr is non-NULL. addrlen must
* not be NULL if addr is valid.
*/
if (addr != NULL) {
union sockaddr_aligned tempaddr;
/* get the IP address and port of the remote host */
// herer
err = salnetconn_getaddr(newconn, &naddr, &port);
if (err != ERR_OK) {
SAL_DEBUG("sal_accept(%d): netconn_peer failed, err=%d\n", s, err);
salnetconn_delete(newconn);
free_socket(nsock);
sock_set_errno(sock, err_to_errno(err));
return -1;
}
SAL_ASSERT("addr valid but addrlen NULL", addrlen != NULL);
IPADDR_PORT_TO_SOCKADDR(&tempaddr, &naddr, port);
if (*addrlen > tempaddr.sa.sa_len) {
*addrlen = tempaddr.sa.sa_len;
}
memcpy(addr, &tempaddr, *addrlen);
LOGD(SAL_TAG, "sal_accept(%d) returning new sock=%d remote %s\n", s, newsock, addr->sa_data);
} else {
SAL_DEBUG("sal_accept(%d) returning new sock=%d\n", s, newsock);
}
sock_set_errno(sock, 0);
return newsock;
}
#else
int accept(int s, struct sockaddr *addr, socklen_t *addrlen)
{
return -1;
}
#endif
int sal_select2(int maxfdp1, fd_set *readset, fd_set *writeset,
fd_set *exceptset, struct timeval *timeout, void *semaphore)
{
uint32_t waitres = 0;
sal_sem_t *psem = (sal_sem_t *)semaphore;
int nready;
fd_set lreadset, lwriteset, lexceptset;
uint32_t msectimeout;
struct sal_select_cb select_cb;
int i;
sal_sem_t sem;
int maxfdp2;
#if SAL_NETCONN_SEM_PER_THREAD
int waited = 0;
#endif
SAL_ARCH_DECL_PROTECT(lev);
SAL_DEBUG("sal_select(%d, %p, %p, %p, tvsec=%d tvusec=%d)",
maxfdp1, (void *)readset,
(void *) writeset, (void *) exceptset,
timeout ? (int32_t)timeout->tv_sec : (int32_t) - 1,
timeout ? (int32_t)timeout->tv_usec : (int32_t) - 1);
/* Go through each socket in each list to count number of sockets which
currently match */
nready = sal_selscan(maxfdp1, readset, writeset, exceptset,
&lreadset, &lwriteset, &lexceptset);
/* If we don't have any current events, then suspend
if we are supposed to */
if (!nready) {
if (timeout && timeout->tv_sec == 0 && timeout->tv_usec == 0) {
SAL_DEBUG("sal_select: no timeout, returning 0");
/* This is OK as the local fdsets are empty and nready is zero,
or we would have returned earlier. */
goto return_copy_fdsets;
}
/* None ready: add our semaphore to list:
We don't actually need any dynamic memory. Our entry on the
list is only valid while we are in this function, so it's ok
to use local variables. */
select_cb.next = NULL;
select_cb.prev = NULL;
select_cb.readset = readset;
select_cb.writeset = writeset;
select_cb.exceptset = exceptset;
select_cb.sem_signalled = 0;
#if SAL_NETCONN_SEM_PER_THREAD
select_cb.psem = SAL_NETCONN_THREAD_SEM_GET();
#else /* SAL_NETCONN_SEM_PER_THREAD */
if (psem) {
select_cb.psem = psem;
} else {
if (sal_sem_new(&sem, 0) != ERR_OK) {
/* failed to create semaphore */
set_errno(ENOMEM);
return -1;
}
select_cb.psem = &sem;
}
#endif /* SAL_NETCONN_SEM_PER_THREAD */
/* Protect the select_cb_list */
SAL_ARCH_PROTECT(lev);
/* Put this select_cb on top of list */
select_cb.next = select_cb_list;
if (select_cb_list != NULL) {
select_cb_list->prev = &select_cb;
}
select_cb_list = &select_cb;
/* Increasing this counter tells event_callback
that the list has changed. */
select_cb_ctr++;
/* Now we can safely unprotect */
SAL_ARCH_UNPROTECT(lev);
/* Increase select_waiting for each socket we are interested in */
maxfdp2 = maxfdp1;
for (i = SAL_SOCKET_OFFSET; i < maxfdp1; i++) {
if ((readset && FD_ISSET(i, readset)) ||
(writeset && FD_ISSET(i, writeset)) ||
(exceptset && FD_ISSET(i, exceptset))) {
struct sal_sock *sock;
struct sal_event *event;
SAL_ARCH_PROTECT(lev);
sock = tryget_socket(i);
event = tryget_event(i);
if (sock != NULL) {
sock->select_waiting++;
SAL_ASSERT("sock->select_waiting > 0",
sock->select_waiting > 0);
} else if (event != NULL) {
//event->psem = SELECT_SEM_PTR(select_cb.sem);
event->psem = select_cb.psem;
} else {
/* Not a valid socket */
nready = -1;
maxfdp2 = i;
SAL_ARCH_UNPROTECT(lev);
break;
}
SAL_ARCH_UNPROTECT(lev);
}
}
if (nready >= 0) {
/* Call sal_selscan again: there could have been events between
the last scan (without us on the list) and putting us on the list! */
nready = sal_selscan(maxfdp1, readset, writeset, exceptset,
&lreadset, &lwriteset, &lexceptset);
if (!nready) {
/* Still none ready, just wait to be woken */
if (timeout == 0) {
/* Wait forever */
msectimeout = 0;
} else {
msectimeout = ((timeout->tv_sec * 1000) + \
((timeout->tv_usec + 500) / 1000));
if (msectimeout == 0) {
/* Wait 1ms at least (0 means wait forever) */
msectimeout = 1;
}
}
waitres = sal_arch_sem_wait(select_cb.psem /*SELECT_SEM_PTR(select_cb.sem)*/,
msectimeout);
#if SAL_NETCONN_SEM_PER_THREAD
waited = 1;
#endif
}
}
/* Decrease select_waiting for each socket we are interested in */
for (i = SAL_SOCKET_OFFSET; i < maxfdp2; i++) {
if ((readset && FD_ISSET(i, readset)) ||
(writeset && FD_ISSET(i, writeset)) ||
(exceptset && FD_ISSET(i, exceptset))) {
struct sal_sock *sock;
//struct sal_event *event;
SAL_ARCH_PROTECT(lev);
sock = tryget_socket(i);
//event = tryget_event(i);
if (sock != NULL) {
/* @todo: what if this is a new socket (reallocated?)
in this case, select_waiting-- would be wrong
(a global 'sockalloc' counter, stored per socket
could help) */
SAL_ASSERT("sock->select_waiting > 0",
sock->select_waiting > 0);
if (sock->select_waiting > 0) {
sock->select_waiting--;
}
//} else if (event != NULL) {
// event->psem = NULL;
} else {
/* Not a valid socket */
nready = -1;
}
SAL_ARCH_UNPROTECT(lev);
}
}
/* Take us off the list */
SAL_ARCH_PROTECT(lev);
if (select_cb.next != NULL) {
select_cb.next->prev = select_cb.prev;
}
if (select_cb_list == &select_cb) {
SAL_ASSERT("select_cb.prev == NULL", select_cb.prev == NULL);
select_cb_list = select_cb.next;
} else {
SAL_ASSERT("select_cb.prev != NULL", select_cb.prev != NULL);
select_cb.prev->next = select_cb.next;
}
/* Increasing this counter tells event_callback
that the list has changed. */
select_cb_ctr++;
SAL_ARCH_UNPROTECT(lev);
#if SAL_NETCONN_SEM_PER_THREAD
if (select_cb.sem_signalled && (!waited || \
(waitres == SAL_ARCH_TIMEOUT))) {
/* don't leave the thread-local semaphore signalled */
sal_arch_sem_wait(select_cb.psem, 1);
}
#else /* SAL_NETCONN_SEM_PER_THREAD */
if (!psem) {
sal_sem_free(select_cb.psem);
}
#endif /* SAL_NETCONN_SEM_PER_THREAD */
if (nready < 0) {
/* This happens when a socket got closed while waiting */
set_errno(EBADF);
return -1;
}
if (waitres == SAL_ARCH_TIMEOUT) {
/* Timeout */
SAL_DEBUG("sal_select: timeout expired");
/* This is OK as the local fdsets are empty and nready is zero,
or we would have returned earlier. */
goto return_copy_fdsets;
}
/* See what's set */
nready = sal_selscan(maxfdp1, readset, writeset, exceptset,
&lreadset, &lwriteset, &lexceptset);
}
SAL_DEBUG("sal_select: nready=%d", nready);
return_copy_fdsets:
set_errno(0);
if (readset) {
*readset = lreadset;
}
if (writeset) {
*writeset = lwriteset;
}
if (exceptset) {
*exceptset = lexceptset;
}
return nready;
}
int
sal_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset,
struct timeval *timeout)
{
return sal_select2(maxfdp1, readset, writeset, exceptset, timeout, NULL);
}
//把有事件的标出来
static int sal_selscan(int maxfdp1, fd_set *readset_in, fd_set *writeset_in,
fd_set *exceptset_in, fd_set *readset_out,
fd_set *writeset_out, fd_set *exceptset_out)
{
int i, nready = 0;
fd_set lreadset, lwriteset, lexceptset;
struct sal_sock *sock;
struct sal_event *event;
SAL_ARCH_DECL_PROTECT(lev);
FD_ZERO(&lreadset);
FD_ZERO(&lwriteset);
FD_ZERO(&lexceptset);
/* Go through each socket in each list to count number of sockets which
currently match */
for (i = SAL_SOCKET_OFFSET; i < maxfdp1; i++) {
/* if this FD is not in the set, continue */
if (!(readset_in && FD_ISSET(i, readset_in)) &&
!(writeset_in && FD_ISSET(i, writeset_in)) &&
!(exceptset_in && FD_ISSET(i, exceptset_in))) {
continue;
}
/* First get the socket's status (protected)... */
SAL_ARCH_PROTECT(lev);
sock = tryget_socket(i);
event = tryget_event(i);
if (sock != NULL || event != NULL) {
void *lastdata = sock ? sock->lastdata : NULL;
int16_t rcvevent = sock ? sock->rcvevent : event->reads;
uint16_t sendevent = sock ? sock->sendevent : event->writes;
uint16_t errevent = sock ? sock->errevent : 0;
SAL_ARCH_UNPROTECT(lev);
/* See if netconn of this socket is ready for read */
if (readset_in && FD_ISSET(i, readset_in) && \
((lastdata != NULL) || (rcvevent > 0))) {
FD_SET(i, &lreadset);
SAL_DEBUG("sal_selscan: fd=%d ready for reading", i);
nready++;
}
/* See if netconn of this socket is ready for write */
if (writeset_in && FD_ISSET(i, writeset_in) && (sendevent != 0)) {
FD_SET(i, &lwriteset);
SAL_DEBUG("sal_selscan: fd=%d ready for writing", i);
nready++;
}
/* See if netconn of this socket had an error */
if (exceptset_in && FD_ISSET(i, exceptset_in) && (errevent != 0)) {
FD_SET(i, &lexceptset);
SAL_DEBUG("sal_selscan: fd=%d ready for exception", i);
nready++;
}
} else {
SAL_ARCH_UNPROTECT(lev);
/* continue on to next FD in list */
}
}
/* copy local sets to the ones provided as arguments */
*readset_out = lreadset;
*writeset_out = lwriteset;
*exceptset_out = lexceptset;
SAL_ASSERT("nready >= 0", nready >= 0);
return nready;
}
ssize_t sal_recvfrom(int s, void *mem, size_t len, int flags,
struct sockaddr *from, socklen_t *fromlen)
{
struct sal_sock *pstsock = NULL;
sal_netbuf_t *buf = NULL;
int off = 0;
u16_t buflen = 0;
u16_t copylen = 0;
err_t err = ERR_OK;
uint8_t done = 0;
union sockaddr_aligned saddr;
if (NULL == mem || 0 == len) {
SAL_ERROR("sal_recvfrom invalid input\n");
return -1;
}
SAL_DEBUG("sal recvfrom input s=%d mem=%p len=%u flags=0x%x \n", s, mem, len, flags);
pstsock = get_socket(s);
if (NULL == pstsock) {
SAL_ERROR("sal_recvfrom cannot get socket %d\n", s);
return -1;
}
do {
SAL_DEBUG("sal recvfrom : top while sock->lastdata=%p\n", pstsock->lastdata);
if (pstsock->lastdata) {
buf = pstsock->lastdata;
} else {
if (((flags & MSG_DONTWAIT) || netconn_is_nonblocking(pstsock->conn)) &&
(pstsock->rcvevent <= 0)) {
if (off > 0) {
sock_set_errno(pstsock, 0);
return off;
}
SAL_ERROR("sal_recvfrom(%d): returning EWOULDBLOCK\n", s);
sock_set_errno(pstsock, EWOULDBLOCK);
return -1;
}
err = salnetconn_recv_data(pstsock->conn, &buf);
if (err < 0) {
SAL_ERROR("sal_recvfrom neconn_recv err=%d, netbuf=%p\r\n", err, buf);
}
if (err == ERR_CLSD) {
return 0;
}
if (err != ERR_OK || buf == NULL || buf->payload == NULL) {
if (off > 0) {
sock_set_errno(pstsock, 0);
return off;
}
sock_set_errno(pstsock, err_to_errno(err));
return -1;
}
pstsock->lastdata = buf;
pstsock->lastoffset = 0;
}
buflen = buf->len;
SAL_DEBUG("sal recvfrom: buflen=%u, len=%u, off=%d, lastoffset=%u\n", buflen, len, off, pstsock->lastoffset);
buflen -= pstsock->lastoffset;
if (len - off > buflen) {
copylen = buflen;
} else {
copylen = len - off;
}
memcpy(&((u8_t *)mem)[off], &((u8_t *)buf->payload)[pstsock->lastoffset], copylen);
off += copylen;
if (NETCONNTYPE_GROUP(pstsock->conn->type) == NETCONN_TCP) {
if (len < copylen) {
pstsock->lastdata = NULL;
pstsock->lastoffset = 0;
free(buf->payload);
free(buf);
buf = NULL;
SAL_ERROR("invalid copylen %d, len = %d, it would underflow\n", copylen, len);
return -1;
}
if ((len == off) || (pstsock->rcvevent <= 0) || ((flags & MSG_PEEK) != 0)) {
done = 1;
}
} else {
done = 1;
}
if (done) {
if (from && fromlen) {
if (NETCONNTYPE_GROUP(pstsock->conn->type) == NETCONN_TCP) {
IPADDR_PORT_TO_SOCKADDR(&saddr, &(pstsock->conn->pcb.tcp->remote_ip), (pstsock->conn->pcb.tcp->remote_port));
} else {
if (ip_addr_isany(&buf->addr) && (buf->port == 0)) {
IPADDR_PORT_TO_SOCKADDR(&saddr, &(pstsock->conn->pcb.udp->remote_ip), (pstsock->conn->pcb.udp->remote_port));
} else {
IPADDR_PORT_TO_SOCKADDR(&saddr, &(buf->addr), buf->port);
}
}
if (*fromlen > saddr.sa.sa_len) {
*fromlen = saddr.sa.sa_len;
}
memcpy(from, &saddr, *fromlen);
}
}
if ((flags & MSG_PEEK) == 0) {
if ((NETCONNTYPE_GROUP(pstsock->conn->type) == NETCONN_TCP) && (buflen > copylen)) {
pstsock->lastdata = buf;
pstsock->lastoffset += copylen;
} else {
pstsock->lastdata = NULL;
pstsock->lastoffset = 0;
free(buf->payload);
free(buf);
buf = NULL;
}
}
} while (!done);
sock_set_errno(pstsock, 0);
return off;
}
int sal_read(int s, void *mem, int len)
{
return sal_recvfrom(s, mem, len, 0, NULL, NULL);
}
ssize_t sal_recv(int s, void *mem, size_t len, int flags)
{
return sal_recvfrom(s, mem, len, flags, NULL, NULL);
}
ssize_t sal_sendto(int s, const void *data, size_t size, int flags,
const struct sockaddr *to, socklen_t tolen)
{
struct sal_sock *pstsalsock = NULL;
err_t err = ERR_OK;
ip_addr_t remote_addr;
u16_t remote_port;
int8_t ip_str[SAL_SOCKET_IP4_ADDR_LEN] = {0};
#if SAL_PACKET_SEND_MODE_ASYNC
if (NULL == data || size == 0 || size > SAL_SOCKET_MAX_PAYLOAD_SIZE) {
#else
if (NULL == data || size == 0) {
#endif
SAL_ERROR("sal_send fail to data to send is %p or size is %d\n", data, size);
return -ERR_ARG;
}
pstsalsock = get_socket(s);
if (NULL == pstsalsock) {
SAL_ERROR("sal_sendto fail to get sal socket by fd %d \n", s);
return ERR_ARG;
}
if (pstsalsock->conn == NULL) {
SAL_ERROR("sal_sendto sal socket %d conn is null\n", s);
return ERR_ARG;
}
/* TODO have no consider tcp server send to client*/
if (NETCONNTYPE_GROUP(pstsalsock->conn->type) == NETCONN_TCP) {
if (pstsalsock->conn->state == NETCONN_NONE) {
SAL_ERROR("sal_sendto socket %d connect state is %d\n", s, pstsalsock->conn->state);
return ERR_VAL;
}
}
if (NETCONNTYPE_GROUP(pstsalsock->conn->type) == NETCONN_UDP) {
/*TO DO if to != NULL, check sockaddr match socket type or not*/
if (to) {
if (pstsalsock->conn->state == NETCONN_NONE) {
sockaddr_to_ipaddr_port(to, &remote_addr, &remote_port);
ip4_sockaddr_to_ipstr_port(to, (char *)ip_str);
LOCK_SAL_CORE;
err = salnetconn_connect(pstsalsock->conn, ip_str, remote_port);
UNLOCK_SAL_CORE;
if (ERR_OK != err) {
SAL_ERROR("sal_sendto fail to connect socket %d\n", s);
return err;
}
}
} else {
if (pstsalsock->conn->state == NETCONN_NONE) {
SAL_ERROR("sal_sendto socket %d is not connected and "
"input addr is null, cannot send packet\n", s);
return ERR_ARG;
}
}
}
#if SAL_PACKET_SEND_MODE_ASYNC
sal_outputbuf_t *buf = NULL;
buf = (sal_outputbuf_t *)aos_zalloc(sizeof(sal_outputbuf_t));
if (NULL == buf) {
SAL_ERROR("memory is not enough, malloc size %d fail\n", sizeof(sal_outputbuf_t));
return -1;
}
buf->payload = aos_malloc(size);
if (NULL == buf->payload) {
free(buf);
SAL_ERROR("memory is no enough, malloc size %d fail\n", size);
return -1;
}
buf->len = size;
memcpy(buf->payload, data, size);
if (sal_mbox_trypost(&pstsalsock->conn->sendmbox, buf) != ERR_OK) {
free(buf->payload);
free(buf);
sock_set_errno(pstsalsock, EAGAIN);
SAL_ERROR("%s try post output packet fail \n", __FUNCTION__);
//return -1;
} else {
sal_deal_event(s, NETCONN_EVT_SENDMINUS);
}
#else
sal_deal_event(s, NETCONN_EVT_SENDMINUS);
LOCK_SAL_CORE;
if (sal_module_send(s, (uint8_t *)data, size, NULL, -1, pstsalsock->conn->send_timeout)) {
SAL_ERROR("socket %d fail to send packet, do nothing for now \r\n", s);
UNLOCK_SAL_CORE;
return -1;
}
UNLOCK_SAL_CORE;
sal_deal_event(s, NETCONN_EVT_SENDPLUS);
#endif
return size;
}
ssize_t sal_send(int s, const void *data, size_t size, int flags)
{
SAL_DEBUG("sal_send(%d, flags=0x%x)\n", s, flags);
return sal_sendto(s, data, size, flags, NULL, 0);
}
int sal_write(int s, const void *data, int size)
{
struct sal_event *event = tryget_event(s);
if (event) {
SAL_ARCH_DECL_PROTECT(lev);
if (size != sizeof(uint64_t)) {
return -1;
}
SAL_ARCH_PROTECT(lev);
event->counts += *(uint64_t *)data;
if (event->counts) {
event->reads = event->counts;
if (event->psem) {
sal_sem_signal(event->psem);
}
}
SAL_ARCH_UNPROTECT(lev);
return size;
}
return sal_send(s, data, size, 0);
}
static int salnetconn_packet_input(sal_netconn_t *conn, void *data, size_t len, char remote_ip[16], uint16_t remote_port)
{
sal_netbuf_t *buf;
if (NULL == conn || !sal_mbox_valid(&conn->recvmbox)) {
SAL_ERROR("invalid connection to input packet\n");
return -1;
}
buf = (sal_netbuf_t *)aos_zalloc(sizeof(sal_netbuf_t));
if (NULL == buf) {
SAL_ERROR("memory is not enough, malloc size %d fail\n", sizeof(sal_netbuf_t));
return -1;
}
buf->payload = aos_malloc(len);
if (NULL == buf->payload) {
free(buf);
SAL_ERROR("memory is no enough, malloc size %d fail\n", len);
return -1;
}
memcpy(buf->payload, data, len);
buf->len = len;
#if LWIP_IPV4 && LWIP_IPV6
buf->addr.type = IPADDR_TYPE_V4;
#endif
if (NULL != remote_ip) {
//ipstr_to_u32(remote_ip, &buf->addr.u_addr.ip4.addr);
ip4addr_aton(remote_ip, (ip4_addr_t *)ip_2_ip4(&buf->addr));
}
buf->port = remote_port;
if (sal_mbox_trypost(&conn->recvmbox, buf) != ERR_OK) {
free(buf->payload);
free(buf);
SAL_ERROR("try post recv packet fail \n");
return -1;
}
return 0;
}
#ifdef SAL_SERVER
int sal_client_status_notify(int fd, client_status_t status, char remote_ip[16], uint16_t remote_port)
{
struct sal_sock *sock = NULL;
sal_netconn_t *newconn = NULL;
LOG("in sal_client_status_notify\n");
sock = get_socket(fd);
if (NULL == sock) {
SAL_ERROR("low level invalid input: socket %d doesn't exist\n", fd);
return -1;
}
if (status != CLIENT_CONNECTED && status != CLIENT_CLOSED) {
SAL_ERROR("invalid remote client status %d\n", status);
return -1;
}
if (sock->conn == NULL) {
SAL_ERROR("socket %d invalid for haven't creat connnet yet\n", fd);
return -1;
}
if (sock->conn->type != NETCONN_TCP) {
SAL_ERROR("socket %d invalid connection type %d\n", fd, sock->conn->type);
return -1;
}
if (!sal_mbox_valid(&sock->conn->acceptmbox)) {
SAL_ERROR("socket %d invalid accept mbox\n", fd);
return -1;
}
LOGD(SAL_TAG, "%s low layer notify client %s port %d status %d\n", __func__, remote_ip, remote_port, status);
newconn = salnetconn_new(NETCONN_TCP, true);
if (NULL == newconn) {
SAL_ERROR("socket %d fail to allocate new netconn\n", fd);
return -1;
}
if (NULL == newconn->pcb.tcp) {
salnetconn_delete(newconn);
SAL_ERROR("socket %d fail to allocate pcb for a new netconn\n", fd);
return -1;
}
if (NULL != remote_ip) {
ipstr_to_u32(remote_ip, &newconn->pcb.tcp->remote_ip.u_addr.ip4.addr);
}
newconn->pcb.tcp->remote_port = remote_port;
newconn->pcb.tcp->remote_ip.type = IPADDR_TYPE_V4;
if (sal_mbox_trypost(&sock->conn->acceptmbox, newconn) != ERR_OK) {
salnetconn_delete(newconn);
SAL_ERROR("try post accept fail\n");
return -1;
}
sal_deal_event(fd, NETCONN_EVT_RCVPLUS);
LOGD(SAL_TAG, "%s low layer notify newconn post from ip %u port %u!\n", __func__,
newconn->pcb.tcp->remote_ip.u_addr.ip4.addr, newconn->pcb.tcp->remote_port);
return ERR_OK;
}
static int find_sockfd_by_type_remote_ip_port(enum netconn_type type,
char remote_ip[16],
uint16_t remote_port)
{
int i;
uint32_t ip32;
bool found = false;
SAL_ARCH_DECL_PROTECT(lev);
if (NULL == remote_ip) {
LOG("type: %d remote port %d\n", type, remote_port);
return -1;
}
ipstr_to_u32(remote_ip, &ip32);
for (i = 0; i < NUM_SOCKETS; i++) {
/* Protect socket array */
SAL_ARCH_PROTECT(lev);
if (sockets[i].conn && sockets[i].conn->type == type) {
if (NETCONN_TCP == type) {
if (sockets[i].conn->pcb.tcp->remote_ip.u_addr.ip4.addr == ip32 &&
sockets[i].conn->pcb.tcp->remote_port == remote_port) {
found = true;
}
} else if (NETCONN_UDP == type) {
if (sockets[i].conn->pcb.udp->remote_ip.u_addr.ip4.addr == ip32 &&
sockets[i].conn->pcb.udp->remote_port == remote_port) {
found = true;
}
}
}
SAL_ARCH_UNPROTECT(lev);
if (found) {
return i + SAL_SOCKET_OFFSET;
}
}
return -1;
}
#endif
int sal_packet_input(int s, void *data, size_t len, char remote_ip[16], uint16_t remote_port)
{
struct sal_sock *sock = NULL;
int ret = 0;
#ifdef SAL_SERVER
struct sal_sock *client_sock = NULL;
int sock_fd = -1, client_sock_fd = -1;
#endif
if (NULL == data || 0 == len) {
SAL_ERROR("low level invalid input data\n");
return -1;
}
sock = get_socket(s);
if (NULL == sock) {
SAL_ERROR("low level invalid input , socket %d doesn't exist\n", s);
return -1;
}
if (sock->conn->state == NETCONN_CLOSE) {
return 0;
}
if (sock->conn == NULL) {
SAL_ERROR("socket %d invalid for haven't creat connnet yet\n");
return -1;
}
#ifdef SAL_SERVER
sock_fd = s;
if (NETCONN_TCP == sock->conn->type) {
// TODO: hard code here
client_sock_fd = 1;
client_sock = get_socket(client_sock_fd);
/*
client_sock_fd = find_sockfd_by_type_remote_ip_port(NETCONN_TCP, remote_ip, remote_port);
client_sock = get_socket(client_sock_fd);
if (NULL == client_sock) {
SAL_ERROR("socket %d does not match type, remote ip and port\n", client_sock_fd);
return -1;
}
if (NULL == client_sock->conn) {
SAL_ERROR("socket %d invalid for haven't creat connnet yet\n", client_sock_fd);
return -1;
}*/
if (client_sock_fd != sock_fd) {
sock_fd = client_sock_fd;
sock = client_sock;
LOGD(SAL_TAG, "%s %d socket %d type %d passes handle to socket %d type %d\n",
__func__, __LINE__, sock_fd, sock->conn->type, client_sock_fd, client_sock->conn->type);
}
}
#endif
ret = salnetconn_packet_input(sock->conn, data, len, remote_ip, remote_port);
if (ret) {
SAL_ERROR("sal packet input fail\n");
return -1;
}
#ifdef SAL_SERVER
sal_deal_event(sock_fd, NETCONN_EVT_RCVPLUS);
#else
sal_deal_event(s, NETCONN_EVT_RCVPLUS);
#endif
return ret;
}
int sal_packet_close(int s)
{
struct sal_sock *sock = NULL;
sock = get_socket(s);
sock->conn->state = NETCONN_CLOSE;
// sal_deal_event(s, NETCONN_EVT_RCVPLUS);
return 0;
}
void sal_deal_event(int s, enum netconn_evt evt)
{
struct sal_select_cb *scb;
int last_select_cb_ctr;
struct sal_sock *sock = tryget_socket(s);
if (!sock) {
return;
}
SAL_ARCH_DECL_PROTECT(lev);
SAL_ARCH_PROTECT(lev);
/* Set event as required */
switch (evt) {
case NETCONN_EVT_RCVPLUS:
sock->rcvevent++;
break;
case NETCONN_EVT_RCVMINUS:
sock->rcvevent--;
break;
case NETCONN_EVT_SENDPLUS:
sock->sendevent++;
break;
case NETCONN_EVT_SENDMINUS:
sock->sendevent--;
break;
case NETCONN_EVT_ERROR:
sock->errevent = 1;
break;
default:
SAL_ASSERT("unknown event", 0);
break;
}
if (sock->select_waiting == 0) {
/* noone is waiting for this socket, no need to check select_cb_list */
SAL_ARCH_UNPROTECT(lev);
return;
}
/* Now decide if anyone is waiting for this socket */
/* NOTE: This code goes through the select_cb_list list multiple times
ONLY IF a select was actually waiting. We go through the list the number
of waiting select calls + 1. This list is expected to be small. */
/* At this point, SAL_ARCH is still protected! */
again:
for (scb = select_cb_list; scb != NULL; scb = scb->next) {
/* remember the state of select_cb_list to detect changes */
last_select_cb_ctr = select_cb_ctr;
if (scb->sem_signalled == 0) {
/* semaphore not signalled yet */
int do_signal = 0;
/* Test this select call for our socket */
if (sock->rcvevent > 0) {
if (scb->readset && FD_ISSET(s, scb->readset)) {
do_signal = 1;
}
}
if (sock->sendevent != 0) {
if (!do_signal && scb->writeset && \
FD_ISSET(s, scb->writeset)) {
do_signal = 1;
}
}
if (sock->errevent != 0) {
if (!do_signal && scb->exceptset && \
FD_ISSET(s, scb->exceptset)) {
do_signal = 1;
}
}
if (do_signal) {
scb->sem_signalled = 1;
/* Don't call SAL_ARCH_UNPROTECT() before signaling the
semaphore, as this might lead to the select thread taking
itself off the list, invalidating the semaphore. */
sal_sem_signal(/*SELECT_SEM_PTR*/(scb->psem));
}
}
/* unlock interrupts with each step */
SAL_ARCH_UNPROTECT(lev);
/* this makes sure interrupt protection time is short */
SAL_ARCH_PROTECT(lev);
if (last_select_cb_ctr != select_cb_ctr) {
/* someone has changed select_cb_list, restart at the beginning */
goto again;
}
}
SAL_ARCH_UNPROTECT(lev);
}
/**
* Allocate a new socket for a given netconn.
*
* @param newconn the netconn for which to allocate a socket
* @param accepted 1 if socket has been created by accept(),
* 0 if socket has been created by socket()
* @return the index of the new socket; -1 on error
*/
static int alloc_socket(sal_netconn_t *newconn, int accepted)
{
int i;
SAL_ARCH_DECL_PROTECT(lev);
/* allocate a new socket identifier */
for (i = 0; i < NUM_SOCKETS; ++i) {
/* Protect socket array */
SAL_ARCH_PROTECT(lev);
if (!sockets[i].conn) {
sockets[i].conn = newconn;
/* The socket is not yet known to anyone, so no need to protect
after having marked it as used. */
SAL_ARCH_UNPROTECT(lev);
sockets[i].lastdata = NULL;
sockets[i].lastoffset = 0;
sockets[i].rcvevent = 0;
/* TCP sendbuf is empty, but the socket is not yet writable
until connected (unless it has been created by accept()). */
sockets[i].sendevent = (NETCONNTYPE_GROUP(newconn->type) == \
NETCONN_TCP ? (accepted != 0) : 1);
sockets[i].errevent = 0;
sockets[i].err = 0;
sockets[i].select_waiting = 0;
return i + SAL_SOCKET_OFFSET;
}
SAL_ARCH_UNPROTECT(lev);
}
return -1;
}
int sal_socket(int domain, int type, int protocol)
{
sal_netconn_t *conn;
int i;
// #if !SAL_IPV6
// SAL_UNUSED_ARG(domain); /* @todo: check this */
// #endif /* SAL_IPV6 */
LOCK_SAL_CORE;
/* create a netconn */
switch (type) {
case SOCK_RAW://暂不支持
set_errno(EINVAL);
UNLOCK_SAL_CORE;
return -1;
case SOCK_DGRAM:
#ifdef SAL_SERVER
conn = salnetconn_new(NETCONN_UDP, false);
#else
conn = salnetconn_new(NETCONN_UDP);
#endif
break;
case SOCK_STREAM:
#ifdef SAL_SERVER
conn = salnetconn_new(NETCONN_TCP, false);
#else
conn = salnetconn_new(NETCONN_TCP);
#endif
break;
default:
set_errno(EINVAL);
UNLOCK_SAL_CORE;
return -1;
}
if (!conn) {
UNLOCK_SAL_CORE;
set_errno(ENOBUFS);
return -1;
}
i = alloc_socket(conn, 0);
if (i == -1) {
salnetconn_delete(conn);
set_errno(ENFILE);
UNLOCK_SAL_CORE;
return -1;
}
conn->socket = i;
UNLOCK_SAL_CORE;
SAL_DEBUG("sal_socket new fd %d\r\n", i);
set_errno(0);
return i;
}
#if SAL_PACKET_SEND_MODE_ASYNC
#define SAL_ASYNC_TASK_SLEEP_TIME_PER_SOCKET 5
static void sal_packet_output(void *arg)
{
int fd = 0;
sal_outputbuf_t *outputmem = NULL;
struct sal_sock *pstsalsock = NULL;
while (sal_send_async_running) {
for (fd = 0; fd < MEMP_NUM_NETCONN; fd++) {
pstsalsock = get_socket(fd);
if (NULL == pstsalsock || NULL == pstsalsock->conn || !sal_mbox_valid(&pstsalsock->conn->sendmbox)) {
aos_msleep(SAL_ASYNC_TASK_SLEEP_TIME_PER_SOCKET);
continue;
}
/* TODO : here need to do some protection to against conn_drain */
if (sal_arch_mbox_fetch(&pstsalsock->conn->sendmbox, (void **)&outputmem,
SAL_ASYNC_TASK_SLEEP_TIME_PER_SOCKET) != SAL_ARCH_TIMEOUT) {
if (outputmem == NULL) {
continue;
}
sal_deal_event(fd, NETCONN_EVT_SENDPLUS);
/* sal module send need timeout to support send timeout */
if (sal_module_send(fd, outputmem->payload, outputmem->len, NULL, -1, 0)) {
SAL_ERROR("socket %d fail to send packet, do nothing for now \r\n", fd);
}
free(outputmem->payload);
free(outputmem);
outputmem = NULL;
}
}
}
return ;
}
#endif
/* Call this during the init process. */
int sal_init(void)
{
if (sal_init_done) {
SAL_ERROR("sal have already init done\n");
return 0;
}
SAL_DEBUG("Initializing SAL ...");
sal_mutex_arch_init();
if (sal_mutex_new(&lock_sal_core) != ERR_OK) {
SAL_ERROR("failed to creat lock_sal_core \n");
sal_mutex_arch_free();
return -1;
}
#if SAL_PACKET_SEND_MODE_ASYNC
aos_task_t task;
sal_send_async_running = 1;
if (aos_task_new_ext(&task, "sal_xmit", sal_packet_output, &sal_send_async_running, 2048, AOS_DEFAULT_APP_PRI - 4)) {
sal_mutex_arch_free();
sal_mutex_free(&lock_sal_core);
SAL_ERROR("fail to creat sal xmit task \r\n");
return -1;
}
#endif
if (sal_module_register_netconn_data_input_cb(&sal_packet_input) != ERR_OK) {
SAL_ERROR("failed to reg sal packet input cb\n");
sal_mutex_arch_free();
sal_mutex_free(&lock_sal_core);
return -1;
}
if (sal_module_register_netconn_close_cb(&sal_packet_close) != ERR_OK) {
SAL_ERROR("failed to reg sal packet input cb\n");
sal_mutex_arch_free();
sal_mutex_free(&lock_sal_core);
return -1;
}
#ifdef SAL_SERVER
if (sal_module_register_client_status_notify_cb(&sal_client_status_notify) != ERR_OK) {
SAL_ERROR("failed to reg client status cb\n");
sal_mutex_arch_free();
sal_mutex_free(&lock_sal_core);
return -1;
}
#endif
/* Low level init. */
if (sal_module_init() != ERR_OK) {
SAL_ERROR("sal low level init fail\n");
sal_mutex_arch_free();
sal_mutex_free(&lock_sal_core);
return -1;
}
sal_init_done = 1;
return 0 ;
}
int sal_deinit(void)
{
if (!sal_init_done) {
SAL_ERROR("sal have not inited\n");
return 0;
}
SAL_DEBUG("Deinitializing SAL ...");
sal_mutex_arch_free();
sal_mutex_free(&lock_sal_core);
#if SAL_PACKET_SEND_MODE_ASYNC
///////
sal_send_async_running = 0;
#endif
/* Low level init. */
sal_module_deinit();
sal_init_done = 0;
return 0 ;
}
int sal_listen(int s, int backlog)
{
#ifndef SAL_SERVER
set_errno(ENOTSUP);
return -1;
#else
struct sal_sock *sock;
err_t err = ERR_OK;
/*there is nothing to do at sal for now */
SAL_DEBUG("sal_listen(%d, backlog=%d)\n", s, backlog);
sock = get_socket(s);
if (!sock) {
return -1;
}
if (NULL == sock->conn) {
SAL_ERROR("sal listen fail to get socket %d conn info\n.", s);
sock_set_errno(sock, err_to_errno(ERR_ARG));
return -1;
}
LOCK_SAL_CORE;
err = salnetconn_listen(sock->conn);
UNLOCK_SAL_CORE;
if (err != ERR_OK) {
SAL_ERROR("sal_listen %d failed, err=%d\n", s, err);
sock_set_errno(sock, err_to_errno(err));
return -1;
}
sock_set_errno(sock, 0);
return 0;
#endif
}
int sal_bind(int s, const struct sockaddr *name, socklen_t namelen)
{
struct sal_sock *sock = NULL;
sal_netconn_t *pstconn = NULL;
ip_addr_t local_addr;
u16_t local_port;
err_t err = ERR_OK;
/*TODO check family and alignment of 'name' */
if (NULL == name || !IS_SOCK_ADDR_LEN_VALID(namelen)) {
SAL_ERROR("sal_bind invalid input arg\n");
return -1;
}
sock = get_socket(s);
if (NULL == sock) {
SAL_ERROR("sal bind get socket failed.");
return ERR_ARG;
}
pstconn = sock->conn;
if (NULL == pstconn) {
SAL_ERROR("sal bind fail to get socket %d conn info\n.", s);
sock_set_errno(sock, err_to_errno(ERR_VAL));
return ERR_ARG;
}
sockaddr_to_ipaddr_port(name, &local_addr, &local_port);
LOCK_SAL_CORE;
err = salnetconn_bind(pstconn, &local_addr, local_port);
UNLOCK_SAL_CORE;
if (ERR_OK != err) {
SAL_ERROR("sal_bind %d failed, err=%d\n", s, err);
sock_set_errno(sock, err_to_errno(err));
return -1;
}
SAL_DEBUG("sal_bind(%d) succeeded\n", s);
sock_set_errno(sock, 0);
return 0;
}
int sal_connect(int s, const struct sockaddr *name, socklen_t namelen)
{
struct sal_sock *sock = NULL;
ip_addr_t remote_addr;
u16_t remote_port;
int8_t ip_str[SAL_SOCKET_IP4_ADDR_LEN] = {0};
err_t err = ERR_OK;
sock = get_socket(s);
if (!sock) {
SAL_ERROR("get_socket failed.");
return -1;
}
if (!sock->conn) {
SAL_ERROR("fail to get socket %d conn info\n.", s);
sock_set_errno(sock, err_to_errno(ERR_VAL));
return -1;
}
/* Only IPv4 is supported. */
if (name->sa_family != AF_INET) {
SAL_ERROR("Not supported (only IPv4 for now)!");
sock_set_errno(sock, err_to_errno(ERR_VAL));
return -1;
}
/* Check size */
if (namelen != sizeof(struct sockaddr_in)) {
SAL_ERROR("sal_connect: invalid address");
sock_set_errno(sock, err_to_errno(ERR_ARG));
return -1;
}
sockaddr_to_ipaddr_port(name, &remote_addr, &remote_port);
LOGD(SAL_TAG, "remote_port -- : %d", remote_port);
ip4_sockaddr_to_ipstr_port(name, (char *)ip_str);
LOCK_SAL_CORE;
err = salnetconn_connect(sock->conn, ip_str, remote_port);
UNLOCK_SAL_CORE;
if (ERR_OK != err) {
SAL_ERROR("sal_connect failed, err=%d\n", err);
sock_set_errno(sock, err_to_errno(err));
return -1;
}
SAL_DEBUG("sal_connect(%d) succeeded\n", s);
sock_set_errno(sock, 0);
return err;
}
/**
* Free a socket. The socket's netconn must have been
* delete before!
*
* @param sock the socket to free
* @param is_tcp != 0 for TCP sockets, used to free lastdata
*/
static void free_socket(struct sal_sock *sock)
{
sock->lastdata = NULL;
sock->lastoffset = 0;
sock->err = 0;
/* Protect socket array */
SAL_ARCH_SET(sock->conn, NULL);
/* don't use 'sock' after this line, as another task
might have allocated it */
}
int sal_close(int s)
{
struct sal_sock *sock;
struct sal_event *event;
err_t err;
SAL_DEBUG("sal_close(%d)\r\n", s);
event = tryget_event(s);
if (event) {
event->used = 0;
return 0;
}
sock = get_socket(s);
if (!sock) {
return -1;
}
if (!sock->conn) {
return -1;
}
#if SAL_PACKET_SEND_MODE_ASYNC
int wait_send_timeout = 0;
if (sal_mbox_valid(&sock->conn->sendmbox)) {
while (wait_send_timeout < SAL_DRAIN_SENDMBOX_WAIT_TIME) {
if (sock->sendevent == 0) {
break;
}
aos_msleep(10);
wait_send_timeout++;
}
}
#endif
//del state check, if socket create, must close module.
//if ((sock->conn->state == NETCONN_CONNECT) || (sock->conn->state == NETCONN_CLOSE)) {
LOCK_SAL_CORE;
if (sal_module_close(s, -1) != 0) {
SAL_DEBUG("sal_module_close failed.");
}
UNLOCK_SAL_CORE;
//}
sal_deal_event(s, NETCONN_EVT_ERROR);
LOCK_SAL_CORE;
err = salnetconn_delete(sock->conn);
UNLOCK_SAL_CORE;
if (err != ERR_OK) {
SAL_ERROR("salnetconn_delete failed in %s.", __func__);
sock_set_errno(sock, err_to_errno(err));
return -1;
}
free_socket(sock);
set_errno(0);
return 0;
}
struct hostent *sal_gethostbyname(const char *name)
{
ip_addr_t addr;
char ip_str[16] = {0};
static struct hostent s_hostent;
static char *s_aliases;
static ip_addr_t s_hostent_addr;
static ip_addr_t *s_phostent_addr[2];
static char s_hostname[DNS_MAX_NAME_LENGTH + 1];
if (!name) {
SAL_ERROR("%s failed, invalid argument.", __func__);
return NULL;
}
LOCK_SAL_CORE;
if (sal_module_domain_to_ip((char *)name, ip_str) != 0) {
SAL_ERROR("domain to ip failed.");
UNLOCK_SAL_CORE;
return NULL;
}
UNLOCK_SAL_CORE;
#if LWIP_IPV4 && LWIP_IPV6
addr.type = IPADDR_TYPE_V4;
#endif
if (ip4addr_aton(ip_str, (ip4_addr_t *)ip_2_ip4(&addr)) == 0) {
SAL_ERROR("ip_2_u32 failed");
return NULL;
}
/* fill hostent */
s_hostent_addr = addr;
s_phostent_addr[0] = &s_hostent_addr;
s_phostent_addr[1] = NULL;
strncpy(s_hostname, name, DNS_MAX_NAME_LENGTH);
s_hostname[DNS_MAX_NAME_LENGTH] = 0;
s_hostent.h_name = s_hostname;
s_aliases = NULL;
s_hostent.h_aliases = &s_aliases;
s_hostent.h_addrtype = AF_INET;
s_hostent.h_length = sizeof(ip_addr_t);
s_hostent.h_addr_list = (char **)&s_phostent_addr;
/* not thread safe, <TODO> */
return &s_hostent;
}
int sal_getsockopt(int s, int level, int optname,
void *optval, socklen_t *optlen)
{
u8_t err = 0;
struct sal_sock *sock = get_socket(s);
if (!sock) {
return -1;
}
if ((NULL == optval) || (NULL == optlen)) {
sock_set_errno(sock, EFAULT);
return -1;
}
/* Only support SOL_SOCKET/SO_ERROR for now. */
switch (level) {
case SOL_SOCKET:
switch (optname) {
case SO_ERROR:
if (*optlen < sizeof(int)) {
return EINVAL;
}
/* only overwrite ERR_OK or temporary errors */
if (((sock->err == 0) || (sock->err == EINPROGRESS)) &&
(sock->conn != NULL)) {
sock_set_errno(sock, err_to_errno(sock->conn->pending_err));
}
*(int *)optval = (sock->err == 0xFF ? (int) - 1 : (int)sock->err);
sock->err = 0;
SAL_DEBUG("sal_getsockopt(%d, SOL_SOCKET, SO_ERROR) = %d\n",
s, *(int *)optval);
break;
default:
SAL_DEBUG("sal_getsockopt(%d, SOL_SOCKET, UNIMPL: "
"optname=0x%x, ..)\n", s, optname);
err = ENOPROTOOPT;
break;
}
break;
default:
SAL_DEBUG("sal_getsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n",
s, level, optname);
err = ENOPROTOOPT;
break;
}
sock_set_errno(sock, err);
return err ? -1 : 0;
}
int sal_setsockopt(int s, int level, int optname,
const void *optval, socklen_t optlen)
{
u8_t err = 0;
struct sal_sock *sock = get_socket(s);
if (!sock) {
return -1;
}
if (NULL == optval) {
sock_set_errno(sock, EFAULT);
return -1;
}
switch (level) {
case SOL_SOCKET:
switch (optname) {
case SO_RCVTIMEO:
sock->conn->recv_timeout = SAL_SO_SNDRCVTIMEO_GET_MS(optval);
break;
case SO_SNDTIMEO:
sock->conn->send_timeout = SAL_SO_SNDRCVTIMEO_GET_MS(optval);
break;
case SO_REUSEADDR:
break;
default:
SAL_DEBUG("sal_setsockopt(%d, SOL_SOCKET:, UNIMPL: "
"optname=0x%x, ..)\n", s, optname);
err = ENOPROTOOPT;
break;
}
break;
case IPPROTO_IP:
switch (optname) {
case IP_MULTICAST_IF:
break;
case IP_MULTICAST_LOOP:
break;
case IP_ADD_MEMBERSHIP:
break;
default:
SAL_DEBUG("sal_setsockopt(%d, SOL_SOCKET:, UNIMPL: "
"optname=0x%x, ..)\n", s, optname);
err = ENOPROTOOPT;
break;
}
break;
default:
SAL_DEBUG("sal_setsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n",
s, level, optname);
err = ENOPROTOOPT;
break;
}
sock_set_errno(sock, err);
return err ? -1 : 0;
}
/** A minimal implementation of fcntl.
* Currently only the commands F_GETFL and F_SETFL are implemented.
* Only the flag O_NONBLOCK is implemented.
*/
int sal_fcntl(int s, int cmd, ...)
{
va_list ap;
struct sal_sock *sock = get_socket(s);
int ret = -1;
if (!sock) {
return -1;
}
va_start(ap, cmd);
int val = va_arg(ap, int);
switch (cmd) {
case F_GETFL:
ret = netconn_is_nonblocking(sock->conn) ? O_NONBLOCK : 0;
sock_set_errno(sock, 0);
break;
case F_SETFL:
if ((val & ~O_NONBLOCK) == 0) {
/* only O_NONBLOCK, all other bits are zero */
netconn_set_nonblocking(sock->conn, val & O_NONBLOCK);
ret = 0;
sock_set_errno(sock, 0);
} else {
sock_set_errno(sock, ENOSYS); /* not yet implemented */
}
break;
default:
SAL_DEBUG("sal_fcntl(%d, UNIMPL: %d, %d)\n", s, cmd, val);
sock_set_errno(sock, ENOSYS); /* not yet implemented */
break;
}
va_end(ap);
return ret;
}
int sal_shutdown(int s, int how)
{
SAL_DEBUG("%s call stub for now\n", __func__);
return 0;
}
int sal_getaddrinfo(const char *nodename, const char *servname,
const struct addrinfo *hints, struct addrinfo **res)
{
//err_t err;
ip_addr_t addr;
struct addrinfo *ai;
struct sockaddr_storage *sa = NULL;
int port_nr = 0;
size_t total_size;
size_t namelen = 0;
int ai_family;
if (res == NULL) {
return EAI_FAIL;
}
*res = NULL;
if ((nodename == NULL) && (servname == NULL)) {
return EAI_NONAME;
}
if (hints != NULL) {
ai_family = hints->ai_family;
if ((ai_family != AF_UNSPEC)
&& (ai_family != AF_INET)
) {
return EAI_FAMILY;
}
} else {
ai_family = AF_UNSPEC;
}
if (servname != NULL) {
/* service name specified: convert to port number
* @todo?: currently, only ASCII integers (port numbers) are supported (AI_NUMERICSERV)! */
port_nr = atoi(servname);
if ((port_nr <= 0) || (port_nr > 0xffff)) {
return EAI_SERVICE;
}
}
if (nodename != NULL) {
/* service location specified, try to resolve */
if ((hints != NULL) && (hints->ai_flags & AI_NUMERICHOST)) {
/* no DNS lookup, just parse for an address string */
if (!ipaddr_aton(nodename, (ip4_addr_t *)&addr)) {
return EAI_NONAME;
}
if ((IP_IS_V6_VAL(addr) && ai_family == AF_INET) ||
(IP_IS_V4_VAL(addr) && ai_family == AF_INET6)) {
return EAI_NONAME;
}
} else {
//ip_addr_t addr;
char ip_str[16] = {0};
LOCK_SAL_CORE;
if (sal_module_domain_to_ip((char *)nodename, ip_str) != 0) {
SAL_ERROR("domain to ip failed.");
UNLOCK_SAL_CORE;
return EAI_FAIL;
}
UNLOCK_SAL_CORE;
// Currently only v4 is supported by AT firmware
#if LWIP_IPV4 && LWIP_IPV6
addr.type = IPADDR_TYPE_V4;
#endif
if (ip4addr_aton(ip_str, (ip4_addr_t *)ip_2_ip4(&addr)) == 0) {
SAL_ERROR("ip_2_u32 failed");
return EAI_FAIL;
}
}
} else {
/* to do service location specified, use loopback address */
}
total_size = sizeof(struct addrinfo) + sizeof(struct sockaddr_storage);
if (nodename != NULL) {
namelen = strlen(nodename);
if (namelen > DNS_MAX_NAME_LENGTH) {
/* invalid name length */
return EAI_FAIL;
}
SAL_ASSERT("namelen is too long", total_size + namelen + 1 > total_size);
total_size += namelen + 1;
}
/* If this fails, please report to lwip-devel! :-) */
SAL_ASSERT("total_size <= NETDB_ELEM_SIZE: please report this!",
total_size <= NETDB_ELEM_SIZE);
ai = (struct addrinfo *)aos_zalloc(total_size);
if (ai == NULL) {
return EAI_MEMORY;
}
/* cast through void* to get rid of alignment warnings */
sa = (struct sockaddr_storage *)(void *)((u8_t *)ai + sizeof(struct addrinfo));
struct sockaddr_in *sa4 = (struct sockaddr_in *)sa;
/* set up sockaddr */
inet_addr_from_ip4addr(&sa4->sin_addr, ip_2_ip4(&addr));
sa4->sin_family = AF_INET;
sa4->sin_len = sizeof(struct sockaddr_in);
sa4->sin_port = sal_htons((u16_t)port_nr);
ai->ai_family = AF_INET;
/* set up addrinfo */
if (hints != NULL) {
/* copy socktype & protocol from hints if specified */
ai->ai_socktype = hints->ai_socktype;
ai->ai_protocol = hints->ai_protocol;
}
if (nodename != NULL) {
/* copy nodename to canonname if specified */
ai->ai_canonname = ((char *)ai + sizeof(struct addrinfo) + \
sizeof(struct sockaddr_storage));
memcpy(ai->ai_canonname, nodename, namelen);
ai->ai_canonname[namelen] = 0;
}
ai->ai_addrlen = sizeof(struct sockaddr_storage);
ai->ai_addr = (struct sockaddr *)sa;
*res = ai;
return 0;
}
void sal_freeaddrinfo(struct addrinfo *ai)
{
if (ai != NULL) {
free(ai);
}
}
#endif
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