gdb调试nginx openssl keyless recv节选

Breakpoint 1, keyless_response_recv (s=0xa22f30) at keyless.c:317
317        k = &s->ssl_keyless;
(gdb) 
318        rbuf = k->response.rbuf;
(gdb) 
327        if (rbuf == NULL) {
(gdb) 
328            rbuf = BUF_MEM_new();
(gdb) 
329                if (rbuf == NULL) {
(gdb) 
333            if (!BUF_MEM_grow(rbuf, KEY_SERVER_BUF_LENGTH)) {
(gdb) 
338            k->response.rbuf = rbuf;
(gdb) 
341        n = SSL_read(k->sslfd, rbuf->data + k->response.recv_n, rbuf->length - k->response.recv_n);
(gdb) p k->sslfd
$1 = (SSL *) 0xb01650
(gdb) p rebuf->data
No symbol "rebuf" in current context.
(gdb) p s->ssl_keyless
$2 = {enable = 1, use = 1, state = 4, error = 0, fd = 10, shutdown = 0, 
  md_buf = "266220Γ}23337b273224'Q373B3742673713703233332327527214z361362tPk^ƨ356g214ƛ35522437234ue22336330371271373L263ڱ300376f33165265~316kg", 
  p = 0xa5d9eb "ng12060160603U04afaBeijing12160170603U04nfbKingsoft11660f0603U04vf\03460320603U0403f23keyserver.com03627r161222085337Z27r170121085337Z0p1v0t0603U04062302CN12060160603U04bfaBeijing12060160603U04afaBeijing12160170603U04nfbKingsoft11660f0603U04vf05"..., n = 69, data = 0x0, request = {wbuf = 0xa8c5f0, sent_n = 102}, response = {rbuf = 0xb01480, recv_n = 0, header_ok = 0, length_in_header = 0, 
    response_opcode = 0 '00', payload = 0x0, padding = 0x0}, sslfd = 0xb01650}
(gdb) p s->ssl_keyless->sslfd
$3 = (SSL *) 0xb01650
(gdb) p k->response.recv_n
$4 = 0
(gdb) n
343        if (n == 0)
(gdb) p n
$5 = 1027
(gdb) n
351        else if (n == -1) {
(gdb) p n
$6 = 1027
(gdb) n
365        k->response.recv_n += n;
(gdb) p k->response.recv_n
$7 = 0
(gdb) n
367        if (k->response.header_ok == 0) {
(gdb) p k->response.header_ok
$8 = 0
(gdb) n
368            if (k->response.recv_n < sizeof(struct keyless_header)) {
(gdb) n
373            header = (struct keyless_header*)rbuf->data;
(gdb) n
375            k->response.length_in_header = ntohs(header->length);
(gdb) n
376            if (k->response.length_in_header == 0) {
(gdb) 
380            if ((k->response.length_in_header + sizeof(struct keyless_header)) > KEY_SERVER_BUF_LENGTH) {
(gdb) 
386            k->response.header_ok = 1;
(gdb) 
389        total_length = sizeof(struct keyless_header) + k->response.length_in_header;
(gdb) p total_length
$9 = 10629736
(gdb) n
390        if (k->response.recv_n < total_length) {
(gdb) p k->response.recv_n
$10 = 1027
(gdb) n
393        } else if (k->response.recv_n > total_length) {
(gdb) n
398        p = rbuf->data + sizeof(struct keyless_header);
(gdb) p p
$11 = 0x379383e680 "S21337276t"
(gdb) p *p
$12 = 83 'S'
(gdb) n
399        while ((p - rbuf->data) < k->response.recv_n) {
(gdb) n
400            length = ntohs(*(uint16_t*)(p + 1));
(gdb) p length
$13 = 285
(gdb) n
401            switch (p[0]) {
(gdb) n
403                k->response.response_opcode = *(p + 3);
(gdb) p p[0]
$14 = 17 '21'
(gdb) n
404                break;
(gdb) n
470            p += length + 3; 
(gdb) n
399        while ((p - rbuf->data) < k->response.recv_n) {
(gdb) n
400            length = ntohs(*(uint16_t*)(p + 1));
(gdb) 
401            switch (p[0]) {
(gdb) 
407                if (length == 1) {
(gdb) 
408                    switch(*(p+3)) {
(gdb) p p[0]
$15 = 18 '22'
(gdb) 
$16 = 18 '22'
(gdb) 
$17 = 18 '22'
(gdb) n
413                            err = KEYLESS_KEY_NOT_FOUND;
(gdb) n
414                            break;
(gdb) n
481        k->error = err;
(gdb) n
482        return -1;    
(gdb) n
483    }
(gdb) n
ssl3_send_server_key_exchange_keyless (s=0xa22f30) at s3_srvr.c:2565
2565                        system("echo 111111111111111111111 >> /home/sunp/abc");
(gdb) n
Detaching after fork from child process 21392.
2566                        if (s->ssl_keyless.error == KEYLESS_ECONN) {
(gdb) n
2570                        } else if (s->ssl_keyless.error == KEYLESS_EAGAIN) {
(gdb) n
2573                         } else if (s->ssl_keyless.error != 0) {
(gdb) n
2574                            al = SSL_AD_HANDSHAKE_FAILURE;
(gdb) n
2575                            SSLerr(SSL_F_KEYLESS_SSL3_SEND_SERVER_KEY_EXCHANGE,
(gdb) n
2577                            goto k_err;
(gdb) n
2613        s->ssl_keyless.error = KEYLESS_ERROR;
(gdb) n
2614        system("echo 7777777777777777777777 >> /home/sunp/abc");
(gdb) n
Detaching after fork from child process 21463.
2615        s->ssl_keyless.use--;
(gdb) 
2616        s->ssl_keyless.state = KEYLESS_STATE_INIT;
(gdb) 
2617        keyless_clean(s);
(gdb) 
2619        system("echo 88888888888888888888888888 >> /home/sunp/abc");
(gdb) n
Detaching after fork from child process 21474.
2620        ssl3_send_alert(s, SSL3_AL_FATAL, al);
(gdb) n
2622        system("echo 000000000000000000000000000 >> /home/sunp/abc");
(gdb) n
Detaching after fork from child process 21485.
2623        return (-1);
(gdb) n
2624    }
(gdb) n
ssl3_accept (s=0xa22f30) at s3_srvr.c:502
502                    if (ret <= 0)
(gdb) n
503                        goto end;
(gdb) n
905        s->in_handshake--;
(gdb) n
906        if (cb != NULL)
(gdb) n
907            cb(s, SSL_CB_ACCEPT_EXIT, ret);
(gdb) n
908        return (ret);
(gdb) n
909    }
(gdb) n
SSL_do_handshake (s=0xa22f30) at ssl_lib.c:2909
2909        return (ret);
(gdb) n
2910    }
(gdb) n
ngx_http_ssl_keyless_handler (ev=0x7f0f7d67a1b0) at src/http/modules/ngx_http_ssl_keyless_module.c:872
872        sslerr = SSL_get_error(req_conn->ssl->connection, n);
(gdb) n
874        if (n == 1 || sslerr == SSL_ERROR_KEYLESS_OK || sslerr == SSL_ERROR_WANT_KEYLESS_CONN) {
(gdb) n
894        if (sslerr == SSL_ERROR_WANT_KEYLESS_READ) {
(gdb) n
906        if (sslerr == SSL_ERROR_WANT_KEYLESS_WRITE) {
(gdb) n
918        if (sslerr == SSL_ERROR_KEYLESS) {
(gdb) n
925        err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0;
(gdb) n
927        req_conn->ssl->no_wait_shutdown = 1;
(gdb) n
928        req_conn->ssl->no_send_shutdown = 1;
(gdb) n
929        req_conn->read->eof = 1;
(gdb) n
931        if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) {
(gdb) n
938        req_conn->read->error = 1;
(gdb) n
940        ngx_log_error(NGX_LOG_ERR, req_conn->log, 0, "SSL_do_handshake() failed");
(gdb) n
941        ngx_http_ssl_handshake_handler(req_conn);
(gdb) n
944    }
(gdb) n
ngx_epoll_process_events (cycle=0xa23c90, timer=297405, flags=1) at src/event/modules/ngx_epoll_module.c:826
826            wev = c->write;
(gdb) n
828            if ((revents & EPOLLOUT) && wev->active) {
(gdb) n
830                if (c->fd == -1 || wev->instance != instance) {
(gdb) n
842                wev->ready = 1;
(gdb) n
844                if (flags & NGX_POST_EVENTS) {
(gdb) n
848                    wev->handler(wev);
(gdb) n
753        for (i = 0; i < events; i++) {
(gdb) n
853        return NGX_OK;
(gdb) n
854    }
(gdb) n
ngx_process_events_and_timers (cycle=0xa23c90) at src/event/ngx_event.c:263
263        delta = ngx_current_msec - delta;
(gdb) n
265        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
(gdb) n
268        ngx_event_process_posted(cycle, &ngx_posted_accept_events);
(gdb) n
270        if (ngx_accept_mutex_held) {
(gdb) n
274        if (delta) {
(gdb) n
275            ngx_event_expire_timers();
(gdb) n
278        ngx_event_process_posted(cycle, &ngx_posted_events);
(gdb) n
279    }
(gdb) n
ngx_worker_process_cycle (cycle=0xa23c90, data=0x0) at src/os/unix/ngx_process_cycle.c:864
864            if (ngx_terminate) {
(gdb) n
870            if (ngx_quit) {
(gdb) n
886            if (ngx_reopen) {
(gdb) n
891        }
(gdb) n
836            if (ngx_exiting) {
(gdb) n
860            ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle");
(gdb) n
862            ngx_process_events_and_timers(cycle);
(gdb) n
864            if (ngx_terminate) {
(gdb) n
870            if (ngx_quit) {
(gdb) n
886            if (ngx_reopen) {
(gdb) n
891        }
(gdb) 
836            if (ngx_exiting) {
(gdb) 
860            ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle");
(gdb) 
862            ngx_process_events_and_timers(cycle);
(gdb) 
Detaching after fork from child process 21486.
Detaching after fork from child process 21487.
Detaching after fork from child process 21488.
Detaching after fork from child process 21489.
Detaching after fork from child process 21490.
Detaching after fork from child process 21491.
Detaching after fork from child process 21492.
[kssl_server] SSL error: error:00000001:lib(0):func(0):reason(1)
[kssl_server] SSL error: error:00000005:lib(0):func(0):DH lib
864            if (ngx_terminate) {
(gdb) 
870            if (ngx_quit) {