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-rw-r--r--code/proxy/proxy.c533
1 files changed, 0 insertions, 533 deletions
diff --git a/code/proxy/proxy.c b/code/proxy/proxy.c
deleted file mode 100644
index a981a2f..0000000
--- a/code/proxy/proxy.c
+++ /dev/null
@@ -1,533 +0,0 @@
-#include "core.h"
-#include "proxy.h"
-
-#include <string.h>
-
-#ifdef ECP_WITH_PTHREAD
-static pthread_mutex_t key_perma_mutex;
-static pthread_mutex_t key_next_mutex;
-#endif
-
-static void *key_perma_table;
-static void *key_next_table;
-
-static unsigned char key_null[ECP_ECDH_SIZE_KEY] = { 0 };
-
-static ECPConnHandler handler_f;
-static ECPConnHandler handler_b;
-
-static int proxyf_create(ECPConnection *conn, unsigned char *payload, size_t size) {
- ECPContext *ctx = conn->sock->ctx;
- ECPConnProxyF *conn_p = (ECPConnProxyF *)conn;
- int rv = ECP_OK;
-
- if (conn->out) return ECP_ERR;
- if (conn->type != ECP_CTYPE_PROXYF) return ECP_ERR;
- if (size < 2*ECP_ECDH_SIZE_KEY) return ECP_ERR;
-
- conn_p->key_next_curr = 0;
- memset(conn_p->key_next, 0, sizeof(conn_p->key_next));
- memset(conn_p->key_out, 0, sizeof(conn_p->key_out));
- memcpy(conn_p->key_next[conn_p->key_next_curr], payload, ECP_ECDH_SIZE_KEY);
- memcpy(conn_p->key_out, payload+ECP_ECDH_SIZE_KEY, ECP_ECDH_SIZE_KEY);
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&key_next_mutex);
-#endif
-#ifdef ECP_WITH_HTABLE
- rv = ctx->ht.init ? ctx->ht.insert(key_next_table, conn_p->key_next[conn_p->key_next_curr], conn) : ECP_ERR;
-#endif
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&key_next_mutex);
-#endif
-
- return rv;
-}
-
-static void proxyf_destroy(ECPConnection *conn) {
- ECPContext *ctx = conn->sock->ctx;
- ECPConnProxyF *conn_p = (ECPConnProxyF *)conn;
-
- if (conn->out) return;
- if (conn->type != ECP_CTYPE_PROXYF) return;
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&key_next_mutex);
- pthread_mutex_lock(&conn->mutex);
-#endif
-#ifdef ECP_WITH_HTABLE
- if (ctx->ht.init) {
- int i;
- for (i=0; i<ECP_MAX_NODE_KEY; i++) {
- if (memcmp(conn_p->key_next[i], key_null, ECP_ECDH_SIZE_KEY)) ctx->ht.remove(key_next_table, conn_p->key_next[i]);
- }
- }
-#endif
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&conn->mutex);
- pthread_mutex_unlock(&key_next_mutex);
-#endif
-}
-
-static ssize_t _proxyf_send_open(ECPConnection *conn) {
- ECPConnProxy *conn_p = (ECPConnProxy *)conn;
- ECPConnection *conn_next = conn_p->next;
- unsigned char payload[ECP_SIZE_PLD(0)];
-
- if (conn_next == NULL) return ECP_ERR;
-
- ecp_pld_set_type(payload, ECP_MTYPE_KGET_REQ);
- return ecp_pld_send_wkey(conn_next, ECP_ECDH_IDX_PERMA, ECP_ECDH_IDX_INV, payload, sizeof(payload));
-}
-
-static ssize_t _proxyf_retry_kget(ECPConnection *conn, ECPTimerItem *ti) {
- if (conn->parent == NULL) return ECP_ERR;
-
- return _proxyf_send_open(conn->parent);
-}
-
-static ssize_t proxyf_open(ECPConnection *conn) {
- int rv = ECP_OK;
- ECPTimerItem ti;
- ECPConnProxy *conn_p = (ECPConnProxy *)conn;
- ECPConnection *conn_next = conn_p->next;
-
- rv = ecp_timer_item_init(&ti, conn_next, ECP_MTYPE_KGET_REP, 3, 3000);
- if (rv) return rv;
-
- ti.retry = _proxyf_retry_kget;
- rv = ecp_timer_push(&ti);
- if (rv) return rv;
-
- return _proxyf_send_open(conn);
-}
-
-static ssize_t proxyf_handle_open(ECPConnection *conn, ecp_seq_t seq, unsigned char mtype, unsigned char *msg, ssize_t size) {
- if (conn->type != ECP_CTYPE_PROXYF) return ECP_ERR;
-
- if (mtype & ECP_MTYPE_FLAG_REP) {
- if (!conn->out) return ECP_ERR;
- if (size < 0) {
- ecp_conn_handler_msg_t *handler = NULL;
- while (conn->type == ECP_CTYPE_PROXYF) {
- ECPConnProxy *conn_p = (ECPConnProxy *)conn;
- conn = conn_p->next;
- }
- handler = conn->sock->ctx->handler[conn->type] ? conn->sock->ctx->handler[conn->type]->msg[ECP_MTYPE_OPEN] : NULL;
- return handler ? handler(conn, seq, mtype, msg, size) : size;
- }
-
- return ecp_conn_handle_open(conn, seq, mtype, msg, size);
- } else {
- ECPContext *ctx = conn->sock->ctx;
- ECPConnProxyF *conn_p = (ECPConnProxyF *)conn;
- int rv = ECP_OK;
- unsigned char ctype = 0;
-
- if (conn->out) return ECP_ERR;
- if (size < 0) return size;
- if (size < 1+2*ECP_ECDH_SIZE_KEY) return ECP_ERR;
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&key_next_mutex);
- pthread_mutex_lock(&conn->mutex);
-#endif
-
- ctype = msg[0];
- msg++;
-
- if (!ecp_conn_is_open(conn)) conn->flags |= ECP_CONN_FLAG_OPEN;
- if (memcmp(conn_p->key_next[conn_p->key_next_curr], msg, ECP_ECDH_SIZE_KEY)) {
- conn_p->key_next_curr = (conn_p->key_next_curr + 1) % ECP_MAX_NODE_KEY;
-#ifdef ECP_WITH_HTABLE
- if (ctx->ht.init) {
- if (memcmp(conn_p->key_next[conn_p->key_next_curr], key_null, ECP_ECDH_SIZE_KEY)) ctx->ht.remove(key_next_table, conn_p->key_next[conn_p->key_next_curr]);
- rv = ctx->ht.insert(key_next_table, conn_p->key_next[conn_p->key_next_curr], conn);
- } else {
- rv = ECP_ERR;
- }
-#endif
- if (!rv) memcpy(conn_p->key_next[conn_p->key_next_curr], msg, ECP_ECDH_SIZE_KEY);
- }
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&conn->mutex);
- pthread_mutex_unlock(&key_next_mutex);
-#endif
-
- if (rv) return rv;
-
- return 1+2*ECP_ECDH_SIZE_KEY;
- }
-
- return ECP_ERR;
-}
-
-static ssize_t proxyf_handle_relay(ECPConnection *conn, ecp_seq_t seq, unsigned char mtype, unsigned char *msg, ssize_t size) {
- ECPContext *ctx = conn->sock->ctx;
- ECPConnection *conn_out = NULL;
- ECPConnProxyF *conn_p = (ECPConnProxyF *)conn;
- unsigned char *payload = NULL;
- ssize_t rv;
-
- if (conn->out) return ECP_ERR;
- if (conn->type != ECP_CTYPE_PROXYF) return ECP_ERR;
-
- if (size < 0) return size;
- if (size < ECP_MIN_PKT) return ECP_ERR_MIN_PKT;
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&key_perma_mutex);
-#endif
-#ifdef ECP_WITH_HTABLE
- conn_out = ctx->ht.init ? ctx->ht.search(key_perma_table, conn_p->key_out) : NULL;
-#endif
- if (conn_out) {
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&conn_out->mutex);
-#endif
- conn_out->refcount++;
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&conn_out->mutex);
-#endif
- }
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&key_perma_mutex);
-#endif
-
- if (conn_out == NULL) return ECP_ERR;
-
- payload = msg - ECP_SIZE_MSG_HDR;
- ecp_pld_set_type(payload, ECP_MTYPE_EXEC);
- rv = ecp_pld_send(conn_out, payload, ECP_SIZE_MSG_HDR+size);
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&conn_out->mutex);
-#endif
- conn_out->refcount--;
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&conn_out->mutex);
-#endif
-
- if (rv < 0) return rv;
- return size;
-}
-
-static int proxyb_insert(ECPConnection *conn) {
- int rv = ECP_OK;
- ECPContext *ctx = conn->sock->ctx;
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&key_perma_mutex);
-#endif
-#ifdef ECP_WITH_HTABLE
- rv = ctx->ht.init ? ctx->ht.insert(key_perma_table, ctx->cr.dh_pub_get_buf(&conn->node.public), conn) : ECP_OK;
-#endif
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&key_perma_mutex);
-#endif
-
- return rv;
-}
-
-static void proxyb_remove(ECPConnection *conn) {
- ECPContext *ctx = conn->sock->ctx;
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&key_perma_mutex);
-#endif
-#ifdef ECP_WITH_HTABLE
- if (ctx->ht.init) ctx->ht.remove(key_perma_table, ctx->cr.dh_pub_get_buf(&conn->node.public));
-#endif
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&key_perma_mutex);
-#endif
-}
-
-static int proxyb_create(ECPConnection *conn, unsigned char *payload, size_t size) {
- ECPContext *ctx = conn->sock->ctx;
-
- if (conn->out) return ECP_ERR;
- if (conn->type != ECP_CTYPE_PROXYB) return ECP_ERR;
-
- // XXX should verify perma_key
- if (size < ECP_ECDH_SIZE_KEY) return ECP_ERR;
- ctx->cr.dh_pub_from_buf(&conn->node.public, payload);
-
- return proxyb_insert(conn);
-}
-
-static void proxyb_destroy(ECPConnection *conn) {
- ECPContext *ctx = conn->sock->ctx;
-
- if (conn->out) return;
- if (conn->type != ECP_CTYPE_PROXYB) return;
-
- proxyb_remove(conn);
-}
-
-static ssize_t _proxyb_send_open(ECPConnection *conn, ECPTimerItem *ti) {
- ECPSocket *sock = conn->sock;
- ECPContext *ctx = sock->ctx;
- unsigned char payload[ECP_SIZE_PLD(ECP_ECDH_SIZE_KEY+1)];
- unsigned char *buf = ecp_pld_get_buf(payload);
- int rv = ECP_OK;
-
- // XXX server should verify perma_key
- ecp_pld_set_type(payload, ECP_MTYPE_OPEN_REQ);
- buf[0] = conn->type;
- memcpy(buf+1, ctx->cr.dh_pub_get_buf(&sock->key_perma.public), ECP_ECDH_SIZE_KEY);
-
- return ecp_pld_send(conn, payload, sizeof(payload));
-}
-
-static ssize_t proxyb_open(ECPConnection *conn) {
- return ecp_timer_send(conn, _proxyb_send_open, ECP_MTYPE_OPEN_REP, 3, 500);
-}
-
-static void proxyb_close(ECPConnection *conn) {
- proxyb_remove(conn);
-}
-
-static ssize_t proxyb_handle_open(ECPConnection *conn, ecp_seq_t seq, unsigned char mtype, unsigned char *msg, ssize_t size) {
- ssize_t rv;
- int is_open;
-
- if (conn->type != ECP_CTYPE_PROXYB) return ECP_ERR;
-
- if (size < 0) return size;
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&conn->mutex);
-#endif
- is_open = ecp_conn_is_open(conn);
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&conn->mutex);
-#endif
-
- rv = ecp_conn_handle_open(conn, seq, mtype, msg, size);
- if (rv < 0) return rv;
-
- if (mtype & ECP_MTYPE_FLAG_REP) {
- if (!conn->out) return ECP_ERR;
- if (!is_open) {
- int rv = proxyb_insert(conn);
- if (rv) return rv;
- }
- return rv;
- } else {
- if (conn->out) return ECP_ERR;
- if (size < rv+ECP_ECDH_SIZE_KEY) return ECP_ERR;
-
- msg += rv;
-
- // XXX should verify perma_key
- return rv+ECP_ECDH_SIZE_KEY;
- }
-
- return ECP_ERR;
-}
-
-static ssize_t proxyb_handle_relay(ECPConnection *conn, ecp_seq_t seq, unsigned char mtype, unsigned char *msg, ssize_t size) {
- ECPContext *ctx = conn->sock->ctx;
- unsigned char *payload = NULL;
- ssize_t rv;
-
- if (conn->type != ECP_CTYPE_PROXYB) return ECP_ERR;
-
- if (size < 0) return size;
- if (size < ECP_MIN_PKT) return ECP_ERR_MIN_PKT;
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&key_next_mutex);
-#endif
-#ifdef ECP_WITH_HTABLE
- conn = ctx->ht.init ? ctx->ht.search(key_next_table, msg+ECP_SIZE_PROTO+1) : NULL;
-#endif
- if (conn) {
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&conn->mutex);
-#endif
- conn->refcount++;
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&conn->mutex);
-#endif
- }
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&key_next_mutex);
-#endif
-
- if (conn == NULL) return ECP_ERR;
-
- payload = msg - ECP_SIZE_MSG_HDR;
- ecp_pld_set_type(payload, ECP_MTYPE_EXEC);
- rv = ecp_pld_send(conn, payload, ECP_SIZE_MSG_HDR+size);
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_lock(&conn->mutex);
-#endif
- conn->refcount--;
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_unlock(&conn->mutex);
-#endif
-
- if (rv < 0) return rv;
- return size;
-}
-
-static ssize_t proxy_set_msg(ECPConnection *conn, unsigned char *pld_out, size_t pld_out_size, unsigned char *pld_in, size_t pld_in_size) {
- if ((conn->type == ECP_CTYPE_PROXYF) && conn->out) {
- unsigned char mtype = ecp_pld_get_type(pld_in);
- if ((mtype == ECP_MTYPE_OPEN_REQ) || (mtype == ECP_MTYPE_KGET_REQ)) {
- ECPConnProxy *conn_p = (ECPConnProxy *)conn;
- ECPContext *ctx = conn->sock->ctx;
- ECPConnection *conn_next = conn_p->next;
- unsigned char *buf = NULL;
- int rv;
-
- if (pld_out_size < ECP_SIZE_MSG_HDR+2+2*ECP_ECDH_SIZE_KEY) return ECP_ERR;
- if (conn_next == NULL) return ECP_ERR;
-
- ecp_pld_set_type(pld_out, ECP_MTYPE_OPEN_REQ);
- buf = ecp_pld_get_buf(pld_out);
-
- buf[0] = ECP_CTYPE_PROXYF;
- rv = ecp_conn_dhkey_get_curr(conn_next, NULL, buf+1);
- if (rv) return rv;
-
- memcpy(buf+1+ECP_ECDH_SIZE_KEY, ctx->cr.dh_pub_get_buf(&conn_next->node.public), ECP_ECDH_SIZE_KEY);
- buf[1+2*ECP_ECDH_SIZE_KEY] = ECP_MTYPE_RELAY;
-
- return ECP_SIZE_MSG_HDR+2+2*ECP_ECDH_SIZE_KEY;
- }
- }
-
- ecp_pld_set_type(pld_out, ECP_MTYPE_RELAY);
- return ECP_SIZE_MSG_HDR;
-}
-
-
-static ssize_t proxy_pack(ECPConnection *conn, unsigned char *packet, size_t pkt_size, unsigned char s_idx, unsigned char c_idx, unsigned char *payload, size_t payload_size, ECPNetAddr *addr, ecp_seq_t *seq, int *rbuf_idx) {
- ECPContext *ctx = conn->sock->ctx;
-
- if (conn->parent) {
- unsigned char payload_[ECP_MAX_PLD];
- ssize_t rv, hdr_size = proxy_set_msg(conn->parent, payload_, sizeof(payload_), payload, payload_size);
- if (hdr_size < 0) return hdr_size;
-
- rv = ecp_conn_pack(conn, payload_+hdr_size, ECP_MAX_PLD-hdr_size, s_idx, c_idx, payload, payload_size, NULL, seq, rbuf_idx);
- if (rv < 0) return rv;
-
- return proxy_pack(conn->parent, packet, pkt_size, ECP_ECDH_IDX_INV, ECP_ECDH_IDX_INV, payload_, rv+hdr_size, addr, NULL, NULL);
- } else {
- return ecp_conn_pack(conn, packet, pkt_size, s_idx, c_idx, payload, payload_size, addr, seq, rbuf_idx);
- }
-}
-
-static ssize_t proxy_pack_raw(ECPSocket *sock, ECPConnection *parent, unsigned char *packet, size_t pkt_size, unsigned char s_idx, unsigned char c_idx, ecp_dh_public_t *public, ecp_aead_key_t *shsec, unsigned char *nonce, ecp_seq_t seq, unsigned char *payload, size_t payload_size, ECPNetAddr *addr) {
- ECPContext *ctx = sock->ctx;
-
- if (parent) {
- unsigned char payload_[ECP_MAX_PLD];
- ssize_t rv, hdr_size = proxy_set_msg(parent, payload_, sizeof(payload_), payload, payload_size);
- if (hdr_size < 0) return hdr_size;
-
- rv = ecp_pack(ctx, payload_+hdr_size, ECP_MAX_PLD-hdr_size, s_idx, c_idx, public, shsec, nonce, seq, payload, payload_size);
- if (rv < 0) return rv;
-
- return proxy_pack(parent, packet, pkt_size, ECP_ECDH_IDX_INV, ECP_ECDH_IDX_INV, payload_, rv+hdr_size, addr, NULL, NULL);
- } else {
- return ecp_pack(ctx, packet, pkt_size, s_idx, c_idx, public, shsec, nonce, seq, payload, payload_size);
- }
-}
-
-int ecp_proxy_init(ECPContext *ctx) {
- int rv;
-
- rv = ecp_conn_handler_init(&handler_f);
- if (rv) return rv;
-
- handler_f.conn_create = proxyf_create;
- handler_f.conn_destroy = proxyf_destroy;
- handler_f.conn_open = proxyf_open;
- handler_f.msg[ECP_MTYPE_OPEN] = proxyf_handle_open;
- handler_f.msg[ECP_MTYPE_EXEC] = ecp_conn_handle_exec;
- handler_f.msg[ECP_MTYPE_RELAY] = proxyf_handle_relay;
- ctx->handler[ECP_CTYPE_PROXYF] = &handler_f;
-
- rv = ecp_conn_handler_init(&handler_b);
- if (rv) return rv;
-
- handler_b.conn_create = proxyb_create;
- handler_b.conn_destroy = proxyb_destroy;
- handler_b.conn_open = proxyb_open;
- handler_b.conn_close = proxyb_close;
- handler_b.msg[ECP_MTYPE_OPEN] = proxyb_handle_open;
- handler_b.msg[ECP_MTYPE_EXEC] = ecp_conn_handle_exec;
- handler_b.msg[ECP_MTYPE_RELAY] = proxyb_handle_relay;
- ctx->handler[ECP_CTYPE_PROXYB] = &handler_b;
-
- ctx->pack = proxy_pack;
- ctx->pack_raw = proxy_pack_raw;
-
-#ifdef ECP_WITH_PTHREAD
- pthread_mutex_init(&key_perma_mutex, NULL);
- pthread_mutex_init(&key_next_mutex, NULL);
-#endif
-
-#ifdef ECP_WITH_HTABLE
- if (ctx->ht.init) {
- key_perma_table = ctx->ht.create(ctx);
- key_next_table = ctx->ht.create(ctx);
- }
-#endif
-
- return ECP_OK;
-}
-
-int ecp_conn_proxy_init(ECPConnection *conn, ECPNode *conn_node, ECPConnProxy proxy[], ECPNode proxy_node[], int size) {
- ECPSocket *sock = conn->sock;
- int i, rv;
-
- rv = ecp_conn_init(conn, conn_node);
- if (rv) return rv;
-
- conn->parent = (ECPConnection *)&proxy[size-1];
- for (i=0; i<size; i++) {
- rv = ecp_conn_create((ECPConnection *)&proxy[i], sock, ECP_CTYPE_PROXYF);
- if (rv) return rv;
-
- rv = ecp_conn_init((ECPConnection *)&proxy[i], &proxy_node[i]);
- if (rv) return rv;
-
- if (i == 0) {
- proxy[i].b.parent = NULL;
- } else {
- proxy[i].b.parent = (ECPConnection *)&proxy[i-1];
- }
- if (i == size-1) {
- proxy[i].next = conn;
- } else {
- proxy[i].next = (ECPConnection *)&proxy[i+1];
- }
- }
-
- return ECP_OK;
-}
-
-static ssize_t _proxy_send_kget(ECPConnection *conn, ECPTimerItem *ti) {
- unsigned char payload[ECP_SIZE_PLD(0)];
-
- ecp_pld_set_type(payload, ECP_MTYPE_KGET_REQ);
- return ecp_pld_send_wkey(conn, ECP_ECDH_IDX_PERMA, ECP_ECDH_IDX_INV, payload, sizeof(payload));
-}
-
-int ecp_conn_proxy_open(ECPConnection *conn, ECPNode *conn_node, ECPConnProxy proxy[], ECPNode proxy_node[], int size) {
- int rv = ecp_conn_proxy_init(conn, conn_node, proxy, proxy_node, size);
- if (rv) return rv;
-
- ssize_t _rv = ecp_timer_send((ECPConnection *)&proxy[0], _proxy_send_kget, ECP_MTYPE_KGET_REP, 3, 500);
- if (_rv < 0) return _rv;
-
- return ECP_OK;
-} \ No newline at end of file
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