ws_ssl -> websocket_ssl_proxy

This commit is contained in:
Sergey Lyubka committed 2014-09-09 18:09:33 +01:00
1 parent 6083b9c5c5
commit 2987cbdb5c
13 files changed
+4 -4

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@@ -0,0 +1,17 @@
# Copyright (c) 2014 Cesanta Software
# All rights reserved
CFLAGS = -W -Wall -I../.. -I. -g -O0 $(CFLAGS_EXTRA)
SOURCES = ws_ssl.c ../../mongoose.c net_skeleton.c ssl_wrapper.c
PROG = ws_ssl
all: $(PROG)
$(PROG): $(SOURCES)
$(CC) -o $(PROG) $(SOURCES) \
-DNS_ENABLE_SSL -DNOEMBED_NET_SKELETON \
-DSSL_WRAPPER_USE_AS_LIBRARY -lssl $(CFLAGS)
clean:
rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib
@@ -0,0 +1,49 @@
-----BEGIN RSA PRIVATE KEY-----
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-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----
@@ -0,0 +1,45 @@
-----BEGIN RSA PRIVATE KEY-----
MIIEpQIBAAKCAQEAwOp1RS9RnE8L5TszDPIOmpf/1pqb+ki99l/sGhqB/KZBKCuq
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-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----
@@ -0,0 +1,45 @@
-----BEGIN RSA PRIVATE KEY-----
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-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----
@@ -0,0 +1,49 @@
-----BEGIN RSA PRIVATE KEY-----
MIIEowIBAAKCAQEAwXIMpHuTNsro2pxe6y1mu27md2Olhvfx26rO3maO0/stIC2z
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-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----
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jkeEjSbZgXihxOZ4cnq7TFEv+rJq18qx+5WrmzkJc5gJendTHqQnVzbYnQR1ky9L
vlJWMBmBGSpCmq30vd7ZkEISBSvDQrCURG+l4kX6wkk6yFeN+sPO/Avwik+cZksk
0g0VtIkyTkwUZwzKr/bylJksH0QOHy+TkPmBSfEzrQ41TLadg9xivmnU8sOILyF9
AgMBAAGjgZwwgZkwHQYDVR0OBBYEFLK4flD5QD/mRufsPx63xlEKM8pwMGoGA1Ud
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Rzvk+/Vdi/7IcaH9CFknIdtineSIw1y98nxnbnNJqxwfNaRblbYvg6OFdUI3POuI
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CQhdy2zpEIVOeUq50DrSJp9CknyGu/IkaGx5GOZtkiHMrpig50CRjX1lS6qrMNYp
vB8gfuqpjsL4Ar3vg+lgMSwNWXBNHrIRPHB5VEzBEdmLFZlvueR0ooEMCklpwX/a
lFImVc6JcY1pBEkHTiTLGMpGAHG3I1aVUaWb3L+V+2ym/KNRNL5C2+1eiqql5u8m
HUaOcNC90ew=
-----END CERTIFICATE-----
@@ -0,0 +1,45 @@
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----
MIIC7DCCAdQCBRQHBXNJMA0GCSqGSIb3DQEBBQUAMDoxDDAKBgNVBAMTA3dzMjEM
MAoGA1UEChMDd3MyMQswCQYDVQQGEwJJRTEPMA0GA1UEBxMGRHVibGluMB4XDTE0
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AYe9Rk6rLZ1Dc/PCgYrEFpU8CXmTESixE5UZrt1O6rnIVnhcga/AIrEXfS8KZ0YL
K2qrowyn3TiMbfYqKSSaMICkgwbEw7h6gEdlnGLJW8pNuD0zYJFcSvCdhaEUf+oZ
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PBQ1jthUiCFBmAl7jgRUaynWldqpoPqjc+8ZjeiHDZpmMnOUnswkdspX2V+33xHe
mSVukHMwfzj1wTJD/nUv+uV9NSAKlPLvARmlYdA20d+7/WuEmOk1AgMBAAEwDQYJ
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rwVqIxwAEo+fJjL+QY7JbAb/eqKaXIBYkAF2lFc4iEmecXX/A3Aqw95AYi78o7HD
MwRPqJha9mxLcCWwjX8XK8pT152BvYFPNhi+6jd++rDRxKDfmNvgdUQ2/YW6a5Wv
zEmLDPUWRIuMQIEmOa2/JhlllDviMExTw51nbqYgCghycRvDACyQAuu8re7P6gcg
bXObNlfxcU/8Ph6MFI+2S9ODtQ4BHyuKd4kRNsYn8vV42a0h3bCYSGPk3kSIgxd7
XijwHT/o8E9ddH2BvDv+6Nhno9C6/MbezEOIs4nlhRk=
-----END CERTIFICATE-----
@@ -0,0 +1,45 @@
-----BEGIN RSA PRIVATE KEY-----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VJkre5ybnXBDN6tfMHWqdobJ4gRWK9rqf+LIZig5XQnyzkue8k+I7aPgO4xNFh56
dkejQcECgYEA9MDCWViqpfvof+epiKzccqnIRnz1EfHdRQjiKsKGRe39+K+pyaqJ
FOOPFy3aOw6M4cFWwcdMYzKTItvzyLVhDqMzT5eup/NVqo5tPoy93XPf2qRYiTl4
2j5wvm0RVkYEONd3pk2lbfbUmn7XQXj0+AG60SvsqErF/UhIBGec/xsCgYEA5fLC
EdiiC98kr4sVaE8G854WI+aAkStqO5YXyrnsMzRsqk8KVVYE1yCC9rYyymDBYmlx
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/1Vohgw86OoaDNvfzDBPpFmQ3rlz0ijHSeSTd5BxBH5FICXACUgygNErjcphOSxj
JQyUxgVTQlo2y1mNm1O/nwS/lxx1xqK9ky4x/Kqvr+w1WBxSFI2kQr2V4OUTobma
sXpGvDcmnrhJJLd0EaefO6cCgYEA3Xw/S9tC8nZjqqYn34nHI16Q6tF54tpTf8Np
dT4x8Xw8cqqhRGMPVHsfSi1irKYXfwgbnienuqlBmtAHVv9pKF+TJfb7gXkmO2XY
xOYIAHGn2uYJHjCun9vmyYKLHv4/MaDH3Jd/I88mviXgEdyp9Js5UJua4utB1Rg3
HJMJ34UCgYEAr0PpHEBMbZXZBybNU96+jRTgkrNeJpzlnMy7et2IsRAtLjZ0mpbn
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iBpIHIBASNCN3sqeq+VqXvavRmeZh5O0vyLP46/kxZx0rzR/NCi9xxU=
-----END RSA PRIVATE KEY-----
-----BEGIN CERTIFICATE-----
MIIC7DCCAdQCBRQHBXNIMA0GCSqGSIb3DQEBBQUAMDoxDDAKBgNVBAMTA3dzMjEM
MAoGA1UEChMDd3MyMQswCQYDVQQGEwJJRTEPMA0GA1UEBxMGRHVibGluMB4XDTE0
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1MEUAvNDGL7xTpepK9hVkXASRkbyNXERXRKFI1N+vpKu6UorT6/osEV/qM+MFJ3s
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iZtzp+NzzLnEnWMNs+fJpPJ96P0kbq2bQzuSBcUynq0=
-----END CERTIFICATE-----
+934
View File
@@ -0,0 +1,934 @@
// Copyright (c) 2014 Cesanta Software Limited
// All rights reserved
//
// This software is dual-licensed: you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation. For the terms of this
// license, see <http://www.gnu.org/licenses/>.
//
// You are free to use this software under the terms of the GNU General
// Public License, but WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// Alternatively, you can license this software under a commercial
// license, as set out in <http://cesanta.com/>.
//
// $Date: 2014-09-09 17:09:33 UTC $
#include "net_skeleton.h"
#ifndef NS_MALLOC
#define NS_MALLOC malloc
#endif
#ifndef NS_REALLOC
#define NS_REALLOC realloc
#endif
#ifndef NS_FREE
#define NS_FREE free
#endif
#define NS_UDP_RECEIVE_BUFFER_SIZE 2000
#define NS_VPRINTF_BUFFER_SIZE 500
struct ctl_msg {
ns_callback_t callback;
char message[1024 * 8];
};
void iobuf_init(struct iobuf *iobuf, size_t size) {
iobuf->len = iobuf->size = 0;
iobuf->buf = NULL;
if (size > 0 && (iobuf->buf = (char *) NS_MALLOC(size)) != NULL) {
iobuf->size = size;
}
}
void iobuf_free(struct iobuf *iobuf) {
if (iobuf != NULL) {
if (iobuf->buf != NULL) NS_FREE(iobuf->buf);
iobuf_init(iobuf, 0);
}
}
size_t iobuf_append(struct iobuf *io, const void *buf, size_t len) {
char *p = NULL;
assert(io != NULL);
assert(io->len <= io->size);
if (len <= 0) {
} else if (io->len + len <= io->size) {
memcpy(io->buf + io->len, buf, len);
io->len += len;
} else if ((p = (char *) NS_REALLOC(io->buf, io->len + len)) != NULL) {
io->buf = p;
memcpy(io->buf + io->len, buf, len);
io->len += len;
io->size = io->len;
} else {
len = 0;
}
return len;
}
void iobuf_remove(struct iobuf *io, size_t n) {
if (n > 0 && n <= io->len) {
memmove(io->buf, io->buf + n, io->len - n);
io->len -= n;
}
}
static size_t ns_out(struct ns_connection *nc, const void *buf, size_t len) {
if (nc->flags & NSF_UDP) {
long n = send(nc->sock, buf, len, 0);
DBG(("%p %d send %ld (%d)", nc, nc->sock, n, errno));
return n < 0 ? 0 : n;
} else {
return iobuf_append(&nc->send_iobuf, buf, len);
}
}
#ifndef NS_DISABLE_THREADS
void *ns_start_thread(void *(*f)(void *), void *p) {
#ifdef _WIN32
return (void *) _beginthread((void (__cdecl *)(void *)) f, 0, p);
#else
pthread_t thread_id = (pthread_t) 0;
pthread_attr_t attr;
(void) pthread_attr_init(&attr);
(void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
#if defined(NS_STACK_SIZE) && NS_STACK_SIZE > 1
(void) pthread_attr_setstacksize(&attr, NS_STACK_SIZE);
#endif
pthread_create(&thread_id, &attr, f, p);
pthread_attr_destroy(&attr);
return (void *) thread_id;
#endif
}
#endif // NS_DISABLE_THREADS
static void ns_add_conn(struct ns_mgr *mgr, struct ns_connection *c) {
c->next = mgr->active_connections;
mgr->active_connections = c;
c->prev = NULL;
if (c->next != NULL) c->next->prev = c;
}
static void ns_remove_conn(struct ns_connection *conn) {
if (conn->prev == NULL) conn->mgr->active_connections = conn->next;
if (conn->prev) conn->prev->next = conn->next;
if (conn->next) conn->next->prev = conn->prev;
}
// Print message to buffer. If buffer is large enough to hold the message,
// return buffer. If buffer is to small, allocate large enough buffer on heap,
// and return allocated buffer.
int ns_avprintf(char **buf, size_t size, const char *fmt, va_list ap) {
va_list ap_copy;
int len;
va_copy(ap_copy, ap);
len = vsnprintf(*buf, size, fmt, ap_copy);
va_end(ap_copy);
if (len < 0) {
// eCos and Windows are not standard-compliant and return -1 when
// the buffer is too small. Keep allocating larger buffers until we
// succeed or out of memory.
*buf = NULL;
while (len < 0) {
if (*buf) free(*buf);
size *= 2;
if ((*buf = (char *) NS_MALLOC(size)) == NULL) break;
va_copy(ap_copy, ap);
len = vsnprintf(*buf, size, fmt, ap_copy);
va_end(ap_copy);
}
} else if (len > (int) size) {
// Standard-compliant code path. Allocate a buffer that is large enough.
if ((*buf = (char *) NS_MALLOC(len + 1)) == NULL) {
len = -1;
} else {
va_copy(ap_copy, ap);
len = vsnprintf(*buf, len + 1, fmt, ap_copy);
va_end(ap_copy);
}
}
return len;
}
int ns_vprintf(struct ns_connection *nc, const char *fmt, va_list ap) {
char mem[NS_VPRINTF_BUFFER_SIZE], *buf = mem;
int len;
if ((len = ns_avprintf(&buf, sizeof(mem), fmt, ap)) > 0) {
ns_out(nc, buf, len);
}
if (buf != mem && buf != NULL) {
free(buf);
}
return len;
}
int ns_printf(struct ns_connection *conn, const char *fmt, ...) {
int len;
va_list ap;
va_start(ap, fmt);
len = ns_vprintf(conn, fmt, ap);
va_end(ap);
return len;
}
static void hexdump(struct ns_connection *nc, const char *path,
int num_bytes, enum ns_event ev) {
const struct iobuf *io = ev == NS_SEND ? &nc->send_iobuf : &nc->recv_iobuf;
FILE *fp;
char *buf, src[60], dst[60];
int buf_size = num_bytes * 5 + 100;
if ((fp = fopen(path, "a")) != NULL) {
ns_sock_to_str(nc->sock, src, sizeof(src), 3);
ns_sock_to_str(nc->sock, dst, sizeof(dst), 7);
fprintf(fp, "%lu %p %s %s %s %d\n", (unsigned long) time(NULL),
nc->connection_data, src,
ev == NS_RECV ? "<-" : ev == NS_SEND ? "->" :
ev == NS_ACCEPT ? "<A" : ev == NS_CONNECT ? "C>" : "XX",
dst, num_bytes);
if (num_bytes > 0 && (buf = (char *) NS_MALLOC(buf_size)) != NULL) {
ns_hexdump(io->buf + (ev == NS_SEND ? 0 : io->len) -
(ev == NS_SEND ? 0 : num_bytes), num_bytes, buf, buf_size);
fprintf(fp, "%s", buf);
free(buf);
}
fclose(fp);
}
}
static void ns_call(struct ns_connection *conn, enum ns_event ev, void *p) {
if (conn->mgr->hexdump_file != NULL && ev != NS_POLL) {
int len = (ev == NS_RECV || ev == NS_SEND) ? * (int *) p : 0;
hexdump(conn, conn->mgr->hexdump_file, len, ev);
}
if (conn->mgr->callback) conn->mgr->callback(conn, ev, p);
}
static void ns_destroy_conn(struct ns_connection *conn) {
closesocket(conn->sock);
iobuf_free(&conn->recv_iobuf);
iobuf_free(&conn->send_iobuf);
#ifdef NS_ENABLE_SSL
if (conn->ssl != NULL) {
SSL_free(conn->ssl);
}
if (conn->ssl_ctx != NULL) {
SSL_CTX_free(conn->ssl_ctx);
}
#endif
NS_FREE(conn);
}
static void ns_close_conn(struct ns_connection *conn) {
DBG(("%p %d", conn, conn->flags));
ns_call(conn, NS_CLOSE, NULL);
ns_remove_conn(conn);
ns_destroy_conn(conn);
}
void ns_set_close_on_exec(sock_t sock) {
#ifdef _WIN32
(void) SetHandleInformation((HANDLE) sock, HANDLE_FLAG_INHERIT, 0);
#else
fcntl(sock, F_SETFD, FD_CLOEXEC);
#endif
}
static void ns_set_non_blocking_mode(sock_t sock) {
#ifdef _WIN32
unsigned long on = 1;
ioctlsocket(sock, FIONBIO, &on);
#else
int flags = fcntl(sock, F_GETFL, 0);
fcntl(sock, F_SETFL, flags | O_NONBLOCK);
#endif
}
#ifndef NS_DISABLE_SOCKETPAIR
int ns_socketpair2(sock_t sp[2], int sock_type) {
union socket_address sa;
sock_t sock;
socklen_t len = sizeof(sa.sin);
int ret = 0;
sp[0] = sp[1] = INVALID_SOCKET;
(void) memset(&sa, 0, sizeof(sa));
sa.sin.sin_family = AF_INET;
sa.sin.sin_port = htons(0);
sa.sin.sin_addr.s_addr = htonl(0x7f000001);
if ((sock = socket(AF_INET, sock_type, 0)) != INVALID_SOCKET &&
!bind(sock, &sa.sa, len) &&
(sock_type == SOCK_DGRAM || !listen(sock, 1)) &&
!getsockname(sock, &sa.sa, &len) &&
(sp[0] = socket(AF_INET, sock_type, 0)) != INVALID_SOCKET &&
!connect(sp[0], &sa.sa, len) &&
(sock_type == SOCK_STREAM ||
(!getsockname(sp[0], &sa.sa, &len) && !connect(sock, &sa.sa, len))) &&
(sp[1] = (sock_type == SOCK_DGRAM ? sock :
accept(sock, &sa.sa, &len))) != INVALID_SOCKET) {
ns_set_close_on_exec(sp[0]);
ns_set_close_on_exec(sp[1]);
ret = 1;
} else {
if (sp[0] != INVALID_SOCKET) closesocket(sp[0]);
if (sp[1] != INVALID_SOCKET) closesocket(sp[1]);
sp[0] = sp[1] = INVALID_SOCKET;
}
if (sock_type != SOCK_DGRAM) closesocket(sock);
return ret;
}
int ns_socketpair(sock_t sp[2]) {
return ns_socketpair2(sp, SOCK_STREAM);
}
#endif // NS_DISABLE_SOCKETPAIR
// TODO(lsm): use non-blocking resolver
static int ns_resolve2(const char *host, struct in_addr *ina) {
struct hostent *he;
if ((he = gethostbyname(host)) == NULL) {
DBG(("gethostbyname(%s) failed: %s", host, strerror(errno)));
} else {
memcpy(ina, he->h_addr_list[0], sizeof(*ina));
return 1;
}
return 0;
}
// Resolve FDQN "host", store IP address in the "ip".
// Return > 0 (IP address length) on success.
int ns_resolve(const char *host, char *buf, size_t n) {
struct in_addr ad;
return ns_resolve2(host, &ad) ? snprintf(buf, n, "%s", inet_ntoa(ad)) : 0;
}
// Address format: [PROTO://][IP_ADDRESS:]PORT[:CERT][:CA_CERT]
static int ns_parse_address(const char *str, union socket_address *sa,
int *proto, int *use_ssl, char *cert, char *ca) {
unsigned int a, b, c, d, port;
int n = 0, len = 0;
char host[200];
#ifdef NS_ENABLE_IPV6
char buf[100];
#endif
// MacOS needs that. If we do not zero it, subsequent bind() will fail.
// Also, all-zeroes in the socket address means binding to all addresses
// for both IPv4 and IPv6 (INADDR_ANY and IN6ADDR_ANY_INIT).
memset(sa, 0, sizeof(*sa));
sa->sin.sin_family = AF_INET;
*proto = SOCK_STREAM;
*use_ssl = 0;
cert[0] = ca[0] = '\0';
if (memcmp(str, "ssl://", 6) == 0) {
str += 6;
*use_ssl = 1;
} else if (memcmp(str, "udp://", 6) == 0) {
str += 6;
*proto = SOCK_DGRAM;
} else if (memcmp(str, "tcp://", 6) == 0) {
str += 6;
}
if (sscanf(str, "%u.%u.%u.%u:%u%n", &a, &b, &c, &d, &port, &len) == 5) {
// Bind to a specific IPv4 address, e.g. 192.168.1.5:8080
sa->sin.sin_addr.s_addr = htonl((a << 24) | (b << 16) | (c << 8) | d);
sa->sin.sin_port = htons((uint16_t) port);
#ifdef NS_ENABLE_IPV6
} else if (sscanf(str, "[%99[^]]]:%u%n", buf, &port, &len) == 2 &&
inet_pton(AF_INET6, buf, &sa->sin6.sin6_addr)) {
// IPv6 address, e.g. [3ffe:2a00:100:7031::1]:8080
sa->sin6.sin6_family = AF_INET6;
sa->sin6.sin6_port = htons((uint16_t) port);
#endif
} else if (sscanf(str, "%199[^ :]:%u%n", host, &port, &len) == 2) {
sa->sin.sin_port = htons((uint16_t) port);
ns_resolve2(host, &sa->sin.sin_addr);
} else if (sscanf(str, "%u%n", &port, &len) == 1) {
// If only port is specified, bind to IPv4, INADDR_ANY
sa->sin.sin_port = htons((uint16_t) port);
}
if (*use_ssl && (sscanf(str + len, ":%99[^:]:%99[^:]%n", cert, ca, &n) == 2 ||
sscanf(str + len, ":%99[^:]%n", cert, &n) == 1)) {
len += n;
}
return port < 0xffff && str[len] == '\0' ? len : 0;
}
// 'sa' must be an initialized address to bind to
static sock_t ns_open_listening_socket(union socket_address *sa, int proto) {
socklen_t sa_len = (sa->sa.sa_family == AF_INET) ?
sizeof(sa->sin) : sizeof(sa->sin6);
sock_t sock = INVALID_SOCKET;
#ifndef _WIN32
int on = 1;
#endif
if ((sock = socket(sa->sa.sa_family, proto, 0)) != INVALID_SOCKET &&
#ifndef _WIN32
// SO_RESUSEADDR is not enabled on Windows because the semantics of
// SO_REUSEADDR on UNIX and Windows is different. On Windows,
// SO_REUSEADDR allows to bind a socket to a port without error even if
// the port is already open by another program. This is not the behavior
// SO_REUSEADDR was designed for, and leads to hard-to-track failure
// scenarios. Therefore, SO_REUSEADDR was disabled on Windows.
!setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (void *) &on, sizeof(on)) &&
#endif
!bind(sock, &sa->sa, sa_len) &&
(proto == SOCK_DGRAM || listen(sock, SOMAXCONN) == 0)) {
ns_set_non_blocking_mode(sock);
// In case port was set to 0, get the real port number
(void) getsockname(sock, &sa->sa, &sa_len);
} else if (sock != INVALID_SOCKET) {
closesocket(sock);
sock = INVALID_SOCKET;
}
return sock;
}
#ifdef NS_ENABLE_SSL
// Certificate generation script is at
// https://github.com/cesanta/net_skeleton/blob/master/scripts/gen_certs.sh
static int ns_use_ca_cert(SSL_CTX *ctx, const char *cert) {
if (ctx == NULL) {
return -1;
} else if (cert == NULL || cert[0] == '\0') {
return 0;
}
SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT, 0);
return SSL_CTX_load_verify_locations(ctx, cert, NULL) == 1 ? 0 : -2;
}
static int ns_use_cert(SSL_CTX *ctx, const char *pem_file) {
if (ctx == NULL) {
return -1;
} else if (pem_file == NULL || pem_file[0] == '\0') {
return 0;
} else if (SSL_CTX_use_certificate_file(ctx, pem_file, 1) == 0 ||
SSL_CTX_use_PrivateKey_file(ctx, pem_file, 1) == 0) {
return -2;
} else {
SSL_CTX_set_mode(ctx, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
SSL_CTX_use_certificate_chain_file(ctx, pem_file);
return 0;
}
}
#endif // NS_ENABLE_SSL
struct ns_connection *ns_bind(struct ns_mgr *srv, const char *str, void *data) {
union socket_address sa;
struct ns_connection *nc = NULL;
int use_ssl, proto;
char cert[100], ca_cert[100];
sock_t sock;
ns_parse_address(str, &sa, &proto, &use_ssl, cert, ca_cert);
if (use_ssl && cert[0] == '\0') return NULL;
if ((sock = ns_open_listening_socket(&sa, proto)) == INVALID_SOCKET) {
} else if ((nc = ns_add_sock(srv, sock, NULL)) == NULL) {
closesocket(sock);
} else {
nc->sa = sa;
nc->flags |= NSF_LISTENING;
nc->connection_data = data;
if (proto == SOCK_DGRAM) {
nc->flags |= NSF_UDP;
}
#ifdef NS_ENABLE_SSL
if (use_ssl) {
nc->ssl_ctx = SSL_CTX_new(SSLv23_server_method());
if (ns_use_cert(nc->ssl_ctx, cert) != 0 ||
ns_use_ca_cert(nc->ssl_ctx, ca_cert) != 0) {
ns_close_conn(nc);
nc = NULL;
}
}
#endif
DBG(("%p sock %d/%d ssl %p %p", nc, sock, proto, nc->ssl_ctx, nc->ssl));
}
return nc;
}
static struct ns_connection *accept_conn(struct ns_connection *ls) {
struct ns_connection *c = NULL;
union socket_address sa;
socklen_t len = sizeof(sa);
sock_t sock = INVALID_SOCKET;
// NOTE(lsm): on Windows, sock is always > FD_SETSIZE
if ((sock = accept(ls->sock, &sa.sa, &len)) == INVALID_SOCKET) {
} else if ((c = ns_add_sock(ls->mgr, sock, NULL)) == NULL) {
closesocket(sock);
#ifdef NS_ENABLE_SSL
} else if (ls->ssl_ctx != NULL &&
((c->ssl = SSL_new(ls->ssl_ctx)) == NULL ||
SSL_set_fd(c->ssl, sock) != 1)) {
DBG(("SSL error"));
ns_close_conn(c);
c = NULL;
#endif
} else {
c->listener = ls;
ns_call(c, NS_ACCEPT, &sa);
DBG(("%p %d %p %p", c, c->sock, c->ssl_ctx, c->ssl));
}
return c;
}
static int ns_is_error(int n) {
return n == 0 ||
(n < 0 && errno != EINTR && errno != EINPROGRESS &&
errno != EAGAIN && errno != EWOULDBLOCK
#ifdef _WIN32
&& WSAGetLastError() != WSAEINTR && WSAGetLastError() != WSAEWOULDBLOCK
#endif
);
}
void ns_sock_to_str(sock_t sock, char *buf, size_t len, int flags) {
union socket_address sa;
socklen_t slen = sizeof(sa);
if (buf != NULL && len > 0) {
buf[0] = '\0';
memset(&sa, 0, sizeof(sa));
if (flags & 4) {
getpeername(sock, &sa.sa, &slen);
} else {
getsockname(sock, &sa.sa, &slen);
}
if (flags & 1) {
#if defined(NS_ENABLE_IPV6)
inet_ntop(sa.sa.sa_family, sa.sa.sa_family == AF_INET ?
(void *) &sa.sin.sin_addr :
(void *) &sa.sin6.sin6_addr, buf, len);
#elif defined(_WIN32)
// Only Windoze Vista (and newer) have inet_ntop()
strncpy(buf, inet_ntoa(sa.sin.sin_addr), len);
#else
inet_ntop(sa.sa.sa_family, (void *) &sa.sin.sin_addr, buf,(socklen_t)len);
#endif
}
if (flags & 2) {
snprintf(buf + strlen(buf), len - (strlen(buf) + 1), "%s%d",
flags & 1 ? ":" : "", (int) ntohs(sa.sin.sin_port));
}
}
}
int ns_hexdump(const void *buf, int len, char *dst, int dst_len) {
const unsigned char *p = (const unsigned char *) buf;
char ascii[17] = "";
int i, idx, n = 0;
for (i = 0; i < len; i++) {
idx = i % 16;
if (idx == 0) {
if (i > 0) n += snprintf(dst + n, dst_len - n, " %s\n", ascii);
n += snprintf(dst + n, dst_len - n, "%04x ", i);
}
n += snprintf(dst + n, dst_len - n, " %02x", p[i]);
ascii[idx] = p[i] < 0x20 || p[i] > 0x7e ? '.' : p[i];
ascii[idx + 1] = '\0';
}
while (i++ % 16) n += snprintf(dst + n, dst_len - n, "%s", " ");
n += snprintf(dst + n, dst_len - n, " %s\n\n", ascii);
return n;
}
#ifdef NS_ENABLE_SSL
static int ns_ssl_err(struct ns_connection *conn, int res) {
int ssl_err = SSL_get_error(conn->ssl, res);
if (ssl_err == SSL_ERROR_WANT_READ) conn->flags |= NSF_WANT_READ;
if (ssl_err == SSL_ERROR_WANT_WRITE) conn->flags |= NSF_WANT_WRITE;
return ssl_err;
}
#endif
static void ns_read_from_socket(struct ns_connection *conn) {
char buf[2048];
int n = 0;
if (conn->flags & NSF_CONNECTING) {
int ok = 1, ret;
socklen_t len = sizeof(ok);
ret = getsockopt(conn->sock, SOL_SOCKET, SO_ERROR, (char *) &ok, &len);
(void) ret;
#ifdef NS_ENABLE_SSL
if (ret == 0 && ok == 0 && conn->ssl != NULL) {
int res = SSL_connect(conn->ssl);
int ssl_err = ns_ssl_err(conn, res);
if (res == 1) {
conn->flags |= NSF_SSL_HANDSHAKE_DONE;
} else if (ssl_err == SSL_ERROR_WANT_READ ||
ssl_err == SSL_ERROR_WANT_WRITE) {
return; // Call us again
} else {
ok = 1;
}
}
#endif
conn->flags &= ~NSF_CONNECTING;
DBG(("%p ok=%d", conn, ok));
if (ok != 0) {
conn->flags |= NSF_CLOSE_IMMEDIATELY;
}
ns_call(conn, NS_CONNECT, &ok);
return;
}
#ifdef NS_ENABLE_SSL
if (conn->ssl != NULL) {
if (conn->flags & NSF_SSL_HANDSHAKE_DONE) {
// SSL library may have more bytes ready to read then we ask to read.
// Therefore, read in a loop until we read everything. Without the loop,
// we skip to the next select() cycle which can just timeout.
while ((n = SSL_read(conn->ssl, buf, sizeof(buf))) > 0) {
DBG(("%p %d <- %d bytes (SSL)", conn, conn->flags, n));
iobuf_append(&conn->recv_iobuf, buf, n);
ns_call(conn, NS_RECV, &n);
}
ns_ssl_err(conn, n);
} else {
int res = SSL_accept(conn->ssl);
int ssl_err = ns_ssl_err(conn, res);
if (res == 1) {
conn->flags |= NSF_SSL_HANDSHAKE_DONE;
} else if (ssl_err == SSL_ERROR_WANT_READ ||
ssl_err == SSL_ERROR_WANT_WRITE) {
return; // Call us again
} else {
conn->flags |= NSF_CLOSE_IMMEDIATELY;
}
return;
}
} else
#endif
{
while ((n = (int) recv(conn->sock, buf, sizeof(buf), 0)) > 0) {
DBG(("%p %d <- %d bytes (PLAIN)", conn, conn->flags, n));
iobuf_append(&conn->recv_iobuf, buf, n);
ns_call(conn, NS_RECV, &n);
}
}
if (ns_is_error(n)) {
conn->flags |= NSF_CLOSE_IMMEDIATELY;
}
}
static void ns_write_to_socket(struct ns_connection *conn) {
struct iobuf *io = &conn->send_iobuf;
int n = 0;
#ifdef NS_ENABLE_SSL
if (conn->ssl != NULL) {
n = SSL_write(conn->ssl, io->buf, io->len);
if (n <= 0) {
int ssl_err = ns_ssl_err(conn, n);
if (ssl_err == SSL_ERROR_WANT_READ || ssl_err == SSL_ERROR_WANT_WRITE) {
return; // Call us again
} else {
conn->flags |= NSF_CLOSE_IMMEDIATELY;
}
}
} else
#endif
{ n = (int) send(conn->sock, io->buf, io->len, 0); }
DBG(("%p %d -> %d bytes", conn, conn->flags, n));
ns_call(conn, NS_SEND, &n);
if (ns_is_error(n)) {
conn->flags |= NSF_CLOSE_IMMEDIATELY;
} else if (n > 0) {
iobuf_remove(io, n);
}
}
int ns_send(struct ns_connection *conn, const void *buf, int len) {
return (int) ns_out(conn, buf, len);
}
static void ns_handle_udp(struct ns_connection *ls) {
struct ns_connection nc;
char buf[NS_UDP_RECEIVE_BUFFER_SIZE];
int n;
socklen_t s_len = sizeof(nc.sa);
memset(&nc, 0, sizeof(nc));
n = recvfrom(ls->sock, buf, sizeof(buf), 0, &nc.sa.sa, &s_len);
if (n <= 0) {
DBG(("%p recvfrom: %s", ls, strerror(errno)));
} else {
nc.recv_iobuf.buf = buf;
nc.recv_iobuf.len = nc.recv_iobuf.size = n;
nc.sock = ls->sock;
nc.mgr = ls->mgr;
DBG(("%p %d bytes received", ls, n));
ns_call(&nc, NS_RECV, &n);
}
}
static void ns_add_to_set(sock_t sock, fd_set *set, sock_t *max_fd) {
if (sock != INVALID_SOCKET) {
FD_SET(sock, set);
if (*max_fd == INVALID_SOCKET || sock > *max_fd) {
*max_fd = sock;
}
}
}
int ns_mgr_poll(struct ns_mgr *mgr, int milli) {
struct ns_connection *conn, *tmp_conn;
struct timeval tv;
fd_set read_set, write_set;
int num_active_connections = 0;
sock_t max_fd = INVALID_SOCKET;
time_t current_time = time(NULL);
FD_ZERO(&read_set);
FD_ZERO(&write_set);
ns_add_to_set(mgr->ctl[1], &read_set, &max_fd);
for (conn = mgr->active_connections; conn != NULL; conn = tmp_conn) {
tmp_conn = conn->next;
ns_call(conn, NS_POLL, &current_time);
if (!(conn->flags & NSF_WANT_WRITE)) {
//DBG(("%p read_set", conn));
ns_add_to_set(conn->sock, &read_set, &max_fd);
}
if (((conn->flags & NSF_CONNECTING) && !(conn->flags & NSF_WANT_READ)) ||
(conn->send_iobuf.len > 0 && !(conn->flags & NSF_CONNECTING) &&
!(conn->flags & NSF_BUFFER_BUT_DONT_SEND))) {
//DBG(("%p write_set", conn));
ns_add_to_set(conn->sock, &write_set, &max_fd);
}
if (conn->flags & NSF_CLOSE_IMMEDIATELY) {
ns_close_conn(conn);
}
}
tv.tv_sec = milli / 1000;
tv.tv_usec = (milli % 1000) * 1000;
if (select((int) max_fd + 1, &read_set, &write_set, NULL, &tv) > 0) {
// select() might have been waiting for a long time, reset current_time
// now to prevent last_io_time being set to the past.
current_time = time(NULL);
// Read wakeup messages
if (mgr->ctl[1] != INVALID_SOCKET &&
FD_ISSET(mgr->ctl[1], &read_set)) {
struct ctl_msg ctl_msg;
int len = (int) recv(mgr->ctl[1], (char *) &ctl_msg, sizeof(ctl_msg), 0);
send(mgr->ctl[1], ctl_msg.message, 1, 0);
if (len >= (int) sizeof(ctl_msg.callback) && ctl_msg.callback != NULL) {
struct ns_connection *c;
for (c = ns_next(mgr, NULL); c != NULL; c = ns_next(mgr, c)) {
ctl_msg.callback(c, NS_POLL, ctl_msg.message);
}
}
}
for (conn = mgr->active_connections; conn != NULL; conn = tmp_conn) {
tmp_conn = conn->next;
if (FD_ISSET(conn->sock, &read_set)) {
if (conn->flags & NSF_LISTENING) {
if (conn->flags & NSF_UDP) {
ns_handle_udp(conn);
} else {
// We're not looping here, and accepting just one connection at
// a time. The reason is that eCos does not respect non-blocking
// flag on a listening socket and hangs in a loop.
accept_conn(conn);
}
} else {
conn->last_io_time = current_time;
ns_read_from_socket(conn);
}
}
if (FD_ISSET(conn->sock, &write_set)) {
if (conn->flags & NSF_CONNECTING) {
ns_read_from_socket(conn);
} else if (!(conn->flags & NSF_BUFFER_BUT_DONT_SEND)) {
conn->last_io_time = current_time;
ns_write_to_socket(conn);
}
}
}
}
for (conn = mgr->active_connections; conn != NULL; conn = tmp_conn) {
tmp_conn = conn->next;
num_active_connections++;
if ((conn->flags & NSF_CLOSE_IMMEDIATELY) ||
(conn->send_iobuf.len == 0 &&
(conn->flags & NSF_FINISHED_SENDING_DATA))) {
ns_close_conn(conn);
}
}
//DBG(("%d active connections", num_active_connections));
return num_active_connections;
}
struct ns_connection *ns_connect(struct ns_mgr *mgr,
const char *address, void *param) {
sock_t sock = INVALID_SOCKET;
struct ns_connection *nc = NULL;
union socket_address sa;
char cert[100], ca_cert[100];
int connect_ret_val, use_ssl, proto;
ns_parse_address(address, &sa, &proto, &use_ssl, cert, ca_cert);
if ((sock = socket(AF_INET, proto, 0)) == INVALID_SOCKET) {
return NULL;
}
ns_set_non_blocking_mode(sock);
connect_ret_val = connect(sock, &sa.sa, sizeof(sa.sin));
if (connect_ret_val != 0 && ns_is_error(connect_ret_val)) {
closesocket(sock);
return NULL;
} else if ((nc = ns_add_sock(mgr, sock, param)) == NULL) {
closesocket(sock);
return NULL;
}
nc->sa = sa; // Essential, cause UDP conns will use sendto()
if (proto == SOCK_DGRAM) {
nc->flags = NSF_UDP;
} else {
nc->flags = NSF_CONNECTING;
}
#ifdef NS_ENABLE_SSL
if (use_ssl) {
if ((nc->ssl_ctx = SSL_CTX_new(SSLv23_client_method())) == NULL ||
ns_use_cert(nc->ssl_ctx, cert) != 0 ||
ns_use_ca_cert(nc->ssl_ctx, ca_cert) != 0 ||
(nc->ssl = SSL_new(nc->ssl_ctx)) == NULL) {
ns_close_conn(nc);
return NULL;
} else {
SSL_set_fd(nc->ssl, sock);
}
}
#endif
return nc;
}
struct ns_connection *ns_add_sock(struct ns_mgr *s, sock_t sock, void *p) {
struct ns_connection *conn;
if ((conn = (struct ns_connection *) NS_MALLOC(sizeof(*conn))) != NULL) {
memset(conn, 0, sizeof(*conn));
ns_set_non_blocking_mode(sock);
ns_set_close_on_exec(sock);
conn->sock = sock;
conn->connection_data = p;
conn->mgr = s;
conn->last_io_time = time(NULL);
ns_add_conn(s, conn);
DBG(("%p %d", conn, sock));
}
return conn;
}
struct ns_connection *ns_next(struct ns_mgr *s, struct ns_connection *conn) {
return conn == NULL ? s->active_connections : conn->next;
}
void ns_broadcast(struct ns_mgr *mgr, ns_callback_t cb,void *data, size_t len) {
struct ctl_msg ctl_msg;
if (mgr->ctl[0] != INVALID_SOCKET && data != NULL &&
len < sizeof(ctl_msg.message)) {
ctl_msg.callback = cb;
memcpy(ctl_msg.message, data, len);
send(mgr->ctl[0], (char *) &ctl_msg,
offsetof(struct ctl_msg, message) + len, 0);
recv(mgr->ctl[0], (char *) &len, 1, 0);
}
}
void ns_mgr_init(struct ns_mgr *s, void *user_data, ns_callback_t cb) {
memset(s, 0, sizeof(*s));
s->ctl[0] = s->ctl[1] = INVALID_SOCKET;
s->user_data = user_data;
s->callback = cb;
#ifdef _WIN32
{ WSADATA data; WSAStartup(MAKEWORD(2, 2), &data); }
#else
// Ignore SIGPIPE signal, so if client cancels the request, it
// won't kill the whole process.
signal(SIGPIPE, SIG_IGN);
#endif
#ifndef NS_DISABLE_SOCKETPAIR
do {
ns_socketpair2(s->ctl, SOCK_DGRAM);
} while (s->ctl[0] == INVALID_SOCKET);
#endif
#ifdef NS_ENABLE_SSL
{static int init_done; if (!init_done) { SSL_library_init(); init_done++; }}
#endif
}
void ns_mgr_free(struct ns_mgr *s) {
struct ns_connection *conn, *tmp_conn;
DBG(("%p", s));
if (s == NULL) return;
// Do one last poll, see https://github.com/cesanta/mongoose/issues/286
ns_mgr_poll(s, 0);
if (s->ctl[0] != INVALID_SOCKET) closesocket(s->ctl[0]);
if (s->ctl[1] != INVALID_SOCKET) closesocket(s->ctl[1]);
s->ctl[0] = s->ctl[1] = INVALID_SOCKET;
for (conn = s->active_connections; conn != NULL; conn = tmp_conn) {
tmp_conn = conn->next;
ns_close_conn(conn);
}
}
+239
View File
@@ -0,0 +1,239 @@
// Copyright (c) 2014 Cesanta Software Limited
// All rights reserved
//
// This software is dual-licensed: you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation. For the terms of this
// license, see <http://www.gnu.org/licenses/>.
//
// You are free to use this software under the terms of the GNU General
// Public License, but WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// Alternatively, you can license this software under a commercial
// license, as set out in <http://cesanta.com/>.
//
// $Date: 2014-09-09 17:09:33 UTC $
#ifndef NS_SKELETON_HEADER_INCLUDED
#define NS_SKELETON_HEADER_INCLUDED
#define NS_SKELETON_VERSION "2.0.0"
#undef UNICODE // Use ANSI WinAPI functions
#undef _UNICODE // Use multibyte encoding on Windows
#define _MBCS // Use multibyte encoding on Windows
#define _INTEGRAL_MAX_BITS 64 // Enable _stati64() on Windows
#define _CRT_SECURE_NO_WARNINGS // Disable deprecation warning in VS2005+
#undef WIN32_LEAN_AND_MEAN // Let windows.h always include winsock2.h
#define _XOPEN_SOURCE 600 // For flockfile() on Linux
#define __STDC_FORMAT_MACROS // <inttypes.h> wants this for C++
#define __STDC_LIMIT_MACROS // C++ wants that for INT64_MAX
#ifndef _LARGEFILE_SOURCE
#define _LARGEFILE_SOURCE // Enable fseeko() and ftello() functions
#endif
#define _FILE_OFFSET_BITS 64 // Enable 64-bit file offsets
#ifdef _MSC_VER
#pragma warning (disable : 4127) // FD_SET() emits warning, disable it
#pragma warning (disable : 4204) // missing c99 support
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <signal.h>
#ifdef _WIN32
#ifdef _MSC_VER
#pragma comment(lib, "ws2_32.lib") // Linking with winsock library
#endif
#include <windows.h>
#include <process.h>
#ifndef EINPROGRESS
#define EINPROGRESS WSAEINPROGRESS
#endif
#ifndef EWOULDBLOCK
#define EWOULDBLOCK WSAEWOULDBLOCK
#endif
#ifndef __func__
#define STRX(x) #x
#define STR(x) STRX(x)
#define __func__ __FILE__ ":" STR(__LINE__)
#endif
#ifndef va_copy
#define va_copy(x,y) x = y
#endif // MINGW #defines va_copy
#define snprintf _snprintf
#define vsnprintf _vsnprintf
#define sleep(x) Sleep((x) * 1000)
#define to64(x) _atoi64(x)
typedef int socklen_t;
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
typedef unsigned short uint16_t;
typedef unsigned __int64 uint64_t;
typedef __int64 int64_t;
typedef SOCKET sock_t;
#ifndef S_ISDIR
#define S_ISDIR(x) ((x) & _S_IFDIR)
#endif
#else
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <pthread.h>
#include <stdarg.h>
#include <unistd.h>
#include <arpa/inet.h> // For inet_pton() when NS_ENABLE_IPV6 is defined
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/select.h>
#define closesocket(x) close(x)
#define __cdecl
#define INVALID_SOCKET (-1)
#define to64(x) strtoll(x, NULL, 10)
typedef int sock_t;
#endif
#ifdef NS_ENABLE_DEBUG
#define DBG(x) do { printf("%-20s ", __func__); printf x; putchar('\n'); \
fflush(stdout); } while(0)
#else
#define DBG(x)
#endif
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
#endif
#ifdef NS_ENABLE_SSL
#ifdef __APPLE__
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
#endif
#include <openssl/ssl.h>
#else
typedef void *SSL;
typedef void *SSL_CTX;
#endif
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
union socket_address {
struct sockaddr sa;
struct sockaddr_in sin;
#ifdef NS_ENABLE_IPV6
struct sockaddr_in6 sin6;
#else
struct sockaddr sin6;
#endif
};
// IO buffers interface
struct iobuf {
char *buf;
size_t len;
size_t size;
};
void iobuf_init(struct iobuf *, size_t initial_size);
void iobuf_free(struct iobuf *);
size_t iobuf_append(struct iobuf *, const void *data, size_t data_size);
void iobuf_remove(struct iobuf *, size_t data_size);
// Net skeleton interface
// Events. Meaning of event parameter (evp) is given in the comment.
enum ns_event {
NS_POLL, // Sent to each connection on each call to ns_mgr_poll()
NS_ACCEPT, // New connection accept()-ed. union socket_address *remote_addr
NS_CONNECT, // connect() succeeded or failed. int *success_status
NS_RECV, // Data has benn received. int *num_bytes
NS_SEND, // Data has been written to a socket. int *num_bytes
NS_CLOSE // Connection is closed. NULL
};
// Callback function (event handler) prototype, must be defined by user.
// Net skeleton will call event handler, passing events defined above.
struct ns_connection;
typedef void (*ns_callback_t)(struct ns_connection *, enum ns_event, void *evp);
struct ns_mgr {
struct ns_connection *active_connections;
ns_callback_t callback; // Event handler function
const char *hexdump_file; // Debug hexdump file path
sock_t ctl[2]; // Socketpair for mg_wakeup()
void *user_data; // User data
};
struct ns_connection {
struct ns_connection *next, *prev; // ns_mgr::active_connections linkage
struct ns_connection *listener; // Set only for accept()-ed connections
struct ns_mgr *mgr;
sock_t sock;
union socket_address sa;
struct iobuf recv_iobuf;
struct iobuf send_iobuf;
SSL *ssl;
SSL_CTX *ssl_ctx;
void *connection_data;
time_t last_io_time;
unsigned int flags;
#define NSF_FINISHED_SENDING_DATA (1 << 0)
#define NSF_BUFFER_BUT_DONT_SEND (1 << 1)
#define NSF_SSL_HANDSHAKE_DONE (1 << 2)
#define NSF_CONNECTING (1 << 3)
#define NSF_CLOSE_IMMEDIATELY (1 << 4)
#define NSF_WANT_READ (1 << 5)
#define NSF_WANT_WRITE (1 << 6)
#define NSF_LISTENING (1 << 7)
#define NSF_UDP (1 << 8)
#define NSF_USER_1 (1 << 20)
#define NSF_USER_2 (1 << 21)
#define NSF_USER_3 (1 << 22)
#define NSF_USER_4 (1 << 23)
#define NSF_USER_5 (1 << 24)
#define NSF_USER_6 (1 << 25)
};
void ns_mgr_init(struct ns_mgr *, void *data, ns_callback_t);
void ns_mgr_free(struct ns_mgr *);
int ns_mgr_poll(struct ns_mgr *, int milli);
void ns_broadcast(struct ns_mgr *, ns_callback_t, void *, size_t);
struct ns_connection *ns_next(struct ns_mgr *, struct ns_connection *);
struct ns_connection *ns_add_sock(struct ns_mgr *, sock_t sock, void *p);
struct ns_connection *ns_bind(struct ns_mgr *, const char *addr, void *p);
struct ns_connection *ns_connect(struct ns_mgr *, const char *addr, void *p);
int ns_send(struct ns_connection *, const void *buf, int len);
int ns_printf(struct ns_connection *, const char *fmt, ...);
int ns_vprintf(struct ns_connection *, const char *fmt, va_list ap);
// Utility functions
void *ns_start_thread(void *(*f)(void *), void *p);
int ns_socketpair(sock_t [2]);
int ns_socketpair2(sock_t [2], int sock_type); // SOCK_STREAM or SOCK_DGRAM
void ns_set_close_on_exec(sock_t);
void ns_sock_to_str(sock_t sock, char *buf, size_t len, int flags);
int ns_hexdump(const void *buf, int len, char *dst, int dst_len);
int ns_avprintf(char **buf, size_t size, const char *fmt, va_list ap);
int ns_resolve(const char *domain_name, char *ip_addr_buf, size_t buf_len);
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // NS_SKELETON_HEADER_INCLUDED
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// Copyright (c) 2014 Cesanta Software Limited
// All rights reserved
//
// This software is dual-licensed: you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation. For the terms of this
// license, see <http://www.gnu.org/licenses/>.
//
// You are free to use this software under the terms of the GNU General
// Public License, but WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// Alternatively, you can license this software under a commercial
// license, as set out in <http://cesanta.com/products.html>.
//
// $Date: 2014-09-09 17:09:33 UTC $
#include "net_skeleton.h"
#include "ssl_wrapper.h"
static void ev_handler(struct ns_connection *nc, enum ns_event ev, void *p) {
const char *target_addr = (const char *) nc->mgr->user_data;
struct ns_connection *pc = (struct ns_connection *) nc->connection_data;
struct iobuf *io = &nc->recv_iobuf;
(void) p;
switch (ev) {
case NS_ACCEPT:
// Create a connection to the target, and interlink both connections
nc->connection_data = ns_connect(nc->mgr, target_addr, nc);
if (nc->connection_data == NULL) {
nc->flags |= NSF_CLOSE_IMMEDIATELY;
}
break;
case NS_CLOSE:
// If either connection closes, unlink them and shedule closing
if (pc != NULL) {
pc->flags |= NSF_FINISHED_SENDING_DATA;
pc->connection_data = NULL;
}
nc->connection_data = NULL;
break;
case NS_RECV:
// Forward arrived data to the other connection, and discard from buffer
if (pc != NULL) {
ns_send(pc, io->buf, io->len);
iobuf_remove(io, io->len);
}
break;
default:
break;
}
}
void *ssl_wrapper_init(const char *local_addr, const char *target_addr,
const char **err_msg) {
struct ns_mgr *mgr = (struct ns_mgr *) calloc(1, sizeof(mgr[0]));
*err_msg = NULL;
if (mgr == NULL) {
*err_msg = "malloc failed";
} else {
ns_mgr_init(mgr, (void *) target_addr, ev_handler);
if (ns_bind(mgr, local_addr, NULL) == NULL) {
*err_msg = "ns_bind() failed: bad listening_port";
ns_mgr_free(mgr);
free(mgr);
mgr = NULL;
}
}
return mgr;
}
void ssl_wrapper_serve(void *param, volatile int *quit) {
struct ns_mgr *mgr = (struct ns_mgr *) param;
while (*quit == 0) {
ns_mgr_poll(mgr, 1000);
}
ns_mgr_free(mgr);
free(mgr);
}
#ifndef SSL_WRAPPER_USE_AS_LIBRARY
static int s_received_signal = 0;
static void signal_handler(int sig_num) {
signal(sig_num, signal_handler);
s_received_signal = sig_num;
}
static void show_usage_and_exit(const char *prog) {
fprintf(stderr, "Usage: %s <listening_address> <target_address>\n", prog);
exit(EXIT_FAILURE);
}
int main(int argc, char *argv[]) {
void *wrapper;
const char *err_msg;
if (argc != 3) {
show_usage_and_exit(argv[0]);
}
// Setup signal handlers
signal(SIGTERM, signal_handler);
signal(SIGINT, signal_handler);
signal(SIGPIPE, SIG_IGN);
if ((wrapper = ssl_wrapper_init(argv[1], argv[2], &err_msg)) == NULL) {
fprintf(stderr, "Error: %s\n", err_msg);
exit(EXIT_FAILURE);
}
ssl_wrapper_serve(wrapper, &s_received_signal);
return EXIT_SUCCESS;
}
#endif // SSL_WRAPPER_USE_AS_LIBRARY
@@ -0,0 +1,34 @@
// Copyright (c) 2014 Cesanta Software Limited
// All rights reserved
//
// This software is dual-licensed: you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation. For the terms of this
// license, see <http://www.gnu.org/licenses/>.
//
// You are free to use this software under the terms of the GNU General
// Public License, but WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// Alternatively, you can license this software under a commercial
// license, as set out in <http://cesanta.com/products.html>.
//
// $Date: 2014-09-09 17:09:33 UTC $
#ifndef SSL_WRAPPER_HEADER_INCLUDED
#define SSL_WRAPPER_HEADER_INCLUDED
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
void *ssl_wrapper_init(const char *listen_addr, const char *target_addr,
const char **err_msg);
void ssl_wrapper_serve(void *, volatile int *stop_marker);
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // SSL_WRAPPER_HEADER_INCLUDED
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// Copyright (c) 2014 Cesanta Software
// All rights reserved
//
// This example demostrates proxying of WebSocket traffic, regardless of the
// protocol (ws:// or wss://).
// To use this example:
// 1. configure your browser to use a proxy on port 2014
// 2. import certs/ws1_ca.pem and certs/ws2_ca.pem into the trusted
// certificates list on your browser
// 3. make && ./ws_ssl
// 4. Point your browser to http://ws_ssl.com
// A page with 4 sections should appear, showing websocket echoes
#include "net_skeleton.h"
#include "mongoose.h"
#include "ssl_wrapper.h"
#define S1_PEM "certs/ws1_server.pem"
#define C1_PEM "certs/ws1_client.pem"
#define CA1_PEM "certs/ws1_ca.pem"
#define S2_PEM "certs/ws2_server.pem"
#define C2_PEM "certs/ws2_client.pem"
#define CA2_PEM "certs/ws2_ca.pem"
struct config {
const char *uri;
const char *wrapper_server_addr;
const char *wrapper_client_addr;
const char *target_addr;
};
static struct config s_wrappers[] = {
{
"ws1:80",
"tcp://127.0.0.1:7001",
"tcp://127.0.0.1:7001",
"tcp://127.0.0.1:9001"
},
{
"ws1:443",
"ssl://127.0.0.1:7002:" S1_PEM,
"tcp://127.0.0.1:7002",
"tcp://127.0.0.1:9001"
},
{
"ws2:80",
"tcp://127.0.0.1:7003",
"tcp://127.0.0.1:7003",
"ssl://127.0.0.1:9002:" C2_PEM ":" CA2_PEM
},
{
"ws2:443",
"ssl://127.0.0.1:7004:" S2_PEM,
"tcp://127.0.0.1:7004",
"ssl://127.0.0.1:9002:" C2_PEM ":" CA2_PEM
},
};
static int s_received_signal = 0;
static void signal_handler(int sig_num) {
signal(sig_num, signal_handler);
s_received_signal = sig_num;
}
static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
int i;
switch (ev) {
case MG_AUTH:
return MG_TRUE;
case MG_REQUEST:
printf("==> [%s] [%s]\n", conn->request_method, conn->uri);
if (strcmp(conn->request_method, "CONNECT") == 0) {
// Iterate over configured wrappers, see if we can use one of them
for (i = 0; i < (int) ARRAY_SIZE(s_wrappers); i++) {
if (strcmp(conn->uri, s_wrappers[i].uri) == 0) {
mg_forward(conn, s_wrappers[i].wrapper_client_addr);
return MG_MORE;
}
}
// No suitable wrappers found. Disallow that CONNECT request.
mg_send_status(conn, 405);
return MG_TRUE;
}
// Not a CONNECT request, serve HTML file.
mg_send_file(conn, "ws_ssl.html");
return MG_MORE;
default:
return MG_FALSE;
}
}
static int ws_handler(struct mg_connection *conn, enum mg_event ev) {
switch (ev) {
case MG_AUTH:
return MG_TRUE;
case MG_REQUEST:
if (conn->is_websocket) {
// Simple websocket echo server
mg_websocket_write(conn, WEBSOCKET_OPCODE_TEXT,
conn->content, conn->content_len);
} else {
mg_printf_data(conn, "%s", "websocket connection expected");
}
return MG_TRUE;
default:
return MG_FALSE;
}
}
static void *serve_thread_func(void *param) {
struct mg_server *server = (struct mg_server *) param;
printf("Listening on port %s\n", mg_get_option(server, "listening_port"));
while (s_received_signal == 0) {
mg_poll_server(server, 1000);
}
mg_destroy_server(&server);
return NULL;
}
static void *wrapper_thread_func(void *param) {
struct config *c = (struct config *) param;
const char *err_msg;
void *wrapper;
wrapper = ssl_wrapper_init(c->wrapper_server_addr, c->target_addr, &err_msg);
if (wrapper == NULL) {
fprintf(stderr, "Error: %s\n", err_msg);
exit(EXIT_FAILURE);
}
//((struct ns_mgr *) wrapper)->hexdump_file = "/dev/stderr";
ssl_wrapper_serve(wrapper, &s_received_signal);
return NULL;
}
int main(void) {
struct mg_server *proxy_server = mg_create_server(NULL, ev_handler);
struct mg_server *ws1_server = mg_create_server(NULL, ws_handler);
struct mg_server *ws2_server = mg_create_server(NULL, ws_handler);
size_t i;
((struct ns_mgr *) proxy_server)->hexdump_file = "/dev/stderr";
// Configure proxy server to listen on port 2014
mg_set_option(proxy_server, "listening_port", "2014");
//mg_set_option(proxy_server, "enable_proxy", "yes");
// Configure two websocket echo servers:
// ws1 is WS, listening on 9001
// ws2 is WSS, listening on 9002
// Note that HTML page thinks that ws1 is WSS, and ws2 is WS,
// where in reality it is vice versa and proxy server makes the decision.
mg_set_option(ws1_server, "listening_port", "tcp://127.0.0.1:9001");
mg_set_option(ws2_server, "listening_port",
"ssl://127.0.0.1:9002:" S2_PEM ":" CA2_PEM);
// Setup signal handlers
signal(SIGTERM, signal_handler);
signal(SIGINT, signal_handler);
// Start SSL wrappers, each in it's own thread
for (i = 0; i < ARRAY_SIZE(s_wrappers); i++) {
ns_start_thread(wrapper_thread_func, &s_wrappers[i]);
}
// Start websocket servers in separate threads
mg_start_thread(serve_thread_func, ws1_server);
mg_start_thread(serve_thread_func, ws2_server);
// Finally, start proxy server in this thread: this call blocks
serve_thread_func(proxy_server);
printf("Existing on signal %d\n", s_received_signal);
return EXIT_SUCCESS;
}
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<html>
<head>
<title>Websocket Proxy SSL Test</title>
<meta charset="utf-8">
<script>
window.onload = function() {
var protocols = ['ws://', 'wss://'];
var websocketServers = ['ws1', 'ws2'];
//protocols = ['wss://'];
//websocketServers = ['ws1']
var createWebsocketConnection = function(proto, server) {
var conn = new WebSocket(proto + server);
var div = document.createElement('div');
var h2 = document.createElement('h2');
h2.innerHTML = 'Connection to ' + proto + server;
document.body.appendChild(h2);
document.body.appendChild(div);
conn.onmessage = function(ev) {
var el = document.createElement('div');
el.innerHTML = 'websocket message: ' + ev.data;
div.appendChild(el);
// Keep only last 5 messages in the list
while (div.childNodes.length > 5) div.removeChild(div.firstChild);
};
// Send some string to the websocket connection periodically.
// websocket server much echo it back.
window.setInterval(function() { conn.send(Math.random()); }, 1000);
};
for (var i = 0; i < protocols.length; i++) {
for (var j = 0; j < websocketServers.length; j++) {
createWebsocketConnection(protocols[i], websocketServers[j]);
}
}
};
</script>
<style>
body > div {
border: 1px solid #ccc; background: #f0f0f0; padding: 0 1em;
margin: 0 2em; min-height: 4em; max-width: 40em;
}
</style>
</head>
<body>
</body>
</html>