Mercurial > hg > nginx-quic
view src/event/ngx_event_openssl.c @ 441:da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Tue, 28 Sep 2004 08:34:51 +0000 |
parents | 4e21d1291a14 |
children | 42d11f017717 |
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/* * Copyright (C) 2002-2004 Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> static ngx_int_t ngx_ssl_write(ngx_connection_t *c, u_char *data, size_t size); ngx_int_t ngx_ssl_init(ngx_log_t *log) { SSL_library_init(); SSL_load_error_strings(); return NGX_OK; } ngx_int_t ngx_ssl_create_session(ngx_ssl_ctx_t *ssl_ctx, ngx_connection_t *c, ngx_uint_t flags) { ngx_ssl_t *ssl; if (!(ssl = ngx_pcalloc(c->pool, sizeof(ngx_ssl_t)))) { return NGX_ERROR; } if (!(ssl->buf = ngx_create_temp_buf(c->pool, NGX_SSL_BUFSIZE))) { return NGX_ERROR; } if (flags & NGX_SSL_BUFFER) { ssl->buffer = 1; } ssl->ssl = SSL_new(ssl_ctx); if (ssl->ssl == NULL) { ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_new() failed"); return NGX_ERROR; } if (SSL_set_fd(ssl->ssl, c->fd) == 0) { ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_set_fd() failed"); return NGX_ERROR; } SSL_set_accept_state(ssl->ssl); c->ssl = ssl; return NGX_OK; } ngx_int_t ngx_ssl_recv(ngx_connection_t *c, u_char *buf, size_t size) { int n, sslerr; ngx_err_t err; char *handshake; n = SSL_read(c->ssl->ssl, buf, size); ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_read: %d", n); if (n > 0) { return n; } sslerr = SSL_get_error(c->ssl->ssl, n); err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0; ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr); if (sslerr == SSL_ERROR_WANT_READ) { return NGX_AGAIN; } #if 0 if (sslerr == SSL_ERROR_WANT_WRITE) { return NGX_AGAIN; } #endif if (!SSL_is_init_finished(c->ssl->ssl)) { handshake = "in SSL handshake"; } else { handshake = ""; } c->ssl->no_rcv_shut = 1; if (sslerr == SSL_ERROR_ZERO_RETURN || ERR_peek_error() == 0) { ngx_log_error(NGX_LOG_INFO, c->log, err, "client closed connection%s", handshake); return NGX_ERROR; } ngx_ssl_error(NGX_LOG_ALERT, c->log, err, "SSL_read() failed%s", handshake); return NGX_ERROR; } /* * OpenSSL has no SSL_writev() so we copy several bufs into our 16K buffer * before SSL_write() call to decrease a SSL overhead. * * Besides for protocols such as HTTP it is possible to always buffer * the output to decrease a SSL overhead some more. */ ngx_chain_t *ngx_ssl_send_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) { int n; ngx_uint_t flush; ssize_t send, size; ngx_buf_t *buf; buf = c->ssl->buf; if (in && in->next == NULL && !c->buffered && !c->ssl->buffer) { /* * we avoid a buffer copy if the incoming buf is a single, * our buffer is empty, and we do not need to buffer the output */ n = ngx_ssl_write(c, in->buf->pos, in->buf->last - in->buf->pos); if (n == NGX_ERROR) { return NGX_CHAIN_ERROR; } if (n < 0) { n = 0; } in->buf->pos += n; return in; } send = 0; flush = (in == NULL) ? 1 : 0; for ( ;; ) { while (in && buf->last < buf->end) { if (in->buf->last_buf) { flush = 1; } if (ngx_buf_special(in->buf)) { in = in->next; continue; } size = in->buf->last - in->buf->pos; if (size > buf->end - buf->last) { size = buf->end - buf->last; } /* * TODO: the taking in->buf->flush into account can be * implemented using the limit on the higher level */ if (send + size > limit) { size = limit - send; flush = 1; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL buf copy: %d", size); ngx_memcpy(buf->last, in->buf->pos, size); buf->last += size; in->buf->pos += size; if (in->buf->pos == in->buf->last) { in = in->next; } } size = buf->last - buf->pos; if (!flush && buf->last < buf->end && c->ssl->buffer) { break; } n = ngx_ssl_write(c, buf->pos, size); if (n == NGX_ERROR) { return NGX_CHAIN_ERROR; } if (n < 0) { n = 0; } buf->pos += n; send += n; c->sent += n; if (n < size) { break; } if (buf->pos == buf->last) { buf->pos = buf->start; buf->last = buf->start; } if (in == NULL || send == limit) { break; } } c->buffered = (buf->pos < buf->last) ? 1 : 0; return in; } static ngx_int_t ngx_ssl_write(ngx_connection_t *c, u_char *data, size_t size) { int n, sslerr; ngx_err_t err; ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL to write: %d", size); n = SSL_write(c->ssl->ssl, data, size); ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_write: %d", n); if (n > 0) { return n; } sslerr = SSL_get_error(c->ssl->ssl, n); err = (sslerr == SSL_ERROR_SYSCALL) ? ngx_errno : 0; ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr); if (sslerr == SSL_ERROR_WANT_WRITE) { c->write->ready = 0; return NGX_AGAIN; } #if 0 if (sslerr == SSL_ERROR_WANT_READ) { return NGX_AGAIN; } #endif c->ssl->no_rcv_shut = 1; ngx_ssl_error(NGX_LOG_ALERT, c->log, err, "SSL_write() failed"); return NGX_ERROR; } ngx_int_t ngx_ssl_shutdown(ngx_connection_t *c) { int n, sslerr; ngx_uint_t again; if (c->timedout) { SSL_set_shutdown(c->ssl->ssl, SSL_RECEIVED_SHUTDOWN|SSL_SENT_SHUTDOWN); } else { if (c->ssl->no_rcv_shut) { SSL_set_shutdown(c->ssl->ssl, SSL_RECEIVED_SHUTDOWN); } if (c->ssl->no_send_shut) { SSL_set_shutdown(c->ssl->ssl, SSL_SENT_SHUTDOWN); } } again = 0; for ( ;; ) { n = SSL_shutdown(c->ssl->ssl); ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_shutdown: %d", n); if (n == 0) { again = 1; break; } if (n == 1) { SSL_free(c->ssl->ssl); c->ssl = NULL; return NGX_OK; } break; } if (!again) { sslerr = SSL_get_error(c->ssl->ssl, n); ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "SSL_get_error: %d", sslerr); } if (again || sslerr == SSL_ERROR_WANT_READ) { ngx_add_timer(c->read, 10000); if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) { return NGX_ERROR; } return NGX_AGAIN; } if (sslerr == SSL_ERROR_WANT_WRITE) { if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) { return NGX_ERROR; } return NGX_AGAIN; } ngx_ssl_error(NGX_LOG_ALERT, c->log, 0, "SSL_shutdown() failed"); return NGX_ERROR; } void ngx_ssl_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, char *fmt, ...) { int len; char errstr[NGX_MAX_CONF_ERRSTR]; va_list args; va_start(args, fmt); len = ngx_vsnprintf(errstr, sizeof(errstr) - 1, fmt, args); va_end(args); errstr[len++] = ' '; errstr[len++] = '('; errstr[len++] = 'S'; errstr[len++] = 'S'; errstr[len++] = 'L'; errstr[len++] = ':'; errstr[len++] = ' '; ERR_error_string_n(ERR_get_error(), errstr + len, sizeof(errstr) - len - 1); ngx_log_error(level, log, err, "%s)", errstr); }