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apache2-http2-security-issues.patch
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File apache2-http2-security-issues.patch of Package apache2
Fixes for CVE-2019-9517 (bsc#1145575), CVE-2019-10082 (bsc#1145741), CVE-2019-10081 (bsc#1145742) Consists of the following 2.4.x commits: From 9f71c7ad5efc5ff3a234852ddf4f17dcb4b4e7f1 Mon Sep 17 00:00:00 2001 From: Jim Jagielski <jim@apache.org> Date: Thu, 13 Jun 2019 11:08:29 +0000 Subject: [PATCH] Merge r1860260 from trunk: * modules/http2: more copying of data to disentangle worker processing from main connection Submitted by: icing Reviewed by: icing, covener, jim From 768fbd906bd20e47ede2da52ef9d3a6c2d07f79d Mon Sep 17 00:00:00 2001 From: Jim Jagielski <jim@apache.org> Date: Thu, 13 Jun 2019 11:09:12 +0000 Subject: [PATCH] Merge r1707084, r1707093, r1707159, r1707362 from trunk: eor_bucket: don't destroy the request multiple times should any filter do a copy (e.g. mod_bucketeer). eor_bucket: follow up to r1707084: fix comment. From 03222c07d905bcf668028e0fec6b257a6c6964c6 Mon Sep 17 00:00:00 2001 From: Stefan Eissing <icing@apache.org> Date: Thu, 1 Aug 2019 08:18:03 +0000 Subject: [PATCH] Merge of r1861338,1862475,1862583,1862865,1863221,1863276 from trunk: *) mod_http2: core setting "LimitRequestFieldSize" is not additionally checked on merged header fields, just as HTTP/1.1 does. [Stefan Eissing, Michael Kaufmann] *) mod_http2: fixed a bug that prevented proper stream cleanup when connection throttling was in place. Stream resets by clients on streams initiated by them are counted as possible trigger for throttling. [Stefan Eissing] *) mod_http2/mpm_event: Fixes the behaviour when a HTTP/2 connection has nothing more to write with streams ongoing (flow control block). The timeout waiting for the client to send WINODW_UPDATE was incorrectly KeepAliveTimeout and not Timeout as it should be. Fixes PR 63534. [Yann Ylavic, Stefan Eissing] Index: httpd-2.4.33/modules/http2/h2_conn.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_conn.c 2019-08-19 16:16:12.971819465 +0200 +++ httpd-2.4.33/modules/http2/h2_conn.c 2019-08-19 16:16:13.099820280 +0200 @@ -231,6 +231,13 @@ apr_status_t h2_conn_run(conn_rec *c) case H2_SESSION_ST_BUSY: case H2_SESSION_ST_WAIT: c->cs->state = CONN_STATE_WRITE_COMPLETION; + if (c->cs && (session->open_streams || !session->remote.emitted_count)) { + /* let the MPM know that we are not done and want + * the Timeout behaviour instead of a KeepAliveTimeout + * See PR 63534. + */ + c->cs->sense = CONN_SENSE_WANT_READ; + } break; case H2_SESSION_ST_CLEANUP: case H2_SESSION_ST_DONE: Index: httpd-2.4.33/modules/http2/h2_filter.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_filter.c 2019-08-19 16:16:12.971819465 +0200 +++ httpd-2.4.33/modules/http2/h2_filter.c 2019-08-19 16:16:13.099820280 +0200 @@ -493,6 +493,52 @@ static apr_status_t status_event(void *c return APR_SUCCESS; } +static apr_status_t discard_body(request_rec *r, apr_off_t maxlen) +{ + apr_bucket_brigade *bb; + int seen_eos; + apr_status_t rv; + + bb = apr_brigade_create(r->pool, r->connection->bucket_alloc); + seen_eos = 0; + do { + apr_bucket *bucket; + + rv = ap_get_brigade(r->input_filters, bb, AP_MODE_READBYTES, + APR_BLOCK_READ, HUGE_STRING_LEN); + + if (rv != APR_SUCCESS) { + apr_brigade_destroy(bb); + return rv; + } + + for (bucket = APR_BRIGADE_FIRST(bb); + bucket != APR_BRIGADE_SENTINEL(bb); + bucket = APR_BUCKET_NEXT(bucket)) + { + const char *data; + apr_size_t len; + + if (APR_BUCKET_IS_EOS(bucket)) { + seen_eos = 1; + break; + } + if (bucket->length == 0) { + continue; + } + rv = apr_bucket_read(bucket, &data, &len, APR_BLOCK_READ); + if (rv != APR_SUCCESS) { + apr_brigade_destroy(bb); + return rv; + } + maxlen -= bucket->length; + } + apr_brigade_cleanup(bb); + } while (!seen_eos && maxlen >= 0); + + return APR_SUCCESS; +} + int h2_filter_h2_status_handler(request_rec *r) { conn_rec *c = r->connection; @@ -510,8 +556,10 @@ int h2_filter_h2_status_handler(request_ task = h2_ctx_get_task(r->connection); if (task) { - - if ((status = ap_discard_request_body(r)) != OK) { + /* In this handler, we do some special sauce to send footers back, + * IFF we received footers in the request. This is used in our test + * cases, since CGI has no way of handling those. */ + if ((status = discard_body(r, 1024)) != OK) { return status; } Index: httpd-2.4.33/modules/http2/h2_headers.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_headers.c 2019-08-19 16:16:12.971819465 +0200 +++ httpd-2.4.33/modules/http2/h2_headers.c 2019-08-19 16:16:13.099820280 +0200 @@ -102,8 +102,9 @@ apr_bucket *h2_bucket_headers_beam(struc const apr_bucket *src) { if (H2_BUCKET_IS_HEADERS(src)) { - h2_headers *r = ((h2_bucket_headers *)src->data)->headers; - apr_bucket *b = h2_bucket_headers_create(dest->bucket_alloc, r); + h2_headers *src_headers = ((h2_bucket_headers *)src->data)->headers; + apr_bucket *b = h2_bucket_headers_create(dest->bucket_alloc, + h2_headers_clone(dest->p, src_headers)); APR_BRIGADE_INSERT_TAIL(dest, b); return b; } @@ -156,7 +157,14 @@ h2_headers *h2_headers_rcreate(request_r h2_headers *h2_headers_copy(apr_pool_t *pool, h2_headers *h) { - return h2_headers_create(h->status, h->headers, h->notes, h->raw_bytes, pool); + return h2_headers_create(h->status, apr_table_copy(pool, h->headers), + apr_table_copy(pool, h->notes), h->raw_bytes, pool); +} + +h2_headers *h2_headers_clone(apr_pool_t *pool, h2_headers *h) +{ + return h2_headers_create(h->status, apr_table_clone(pool, h->headers), + apr_table_clone(pool, h->notes), h->raw_bytes, pool); } h2_headers *h2_headers_die(apr_status_t type, Index: httpd-2.4.33/modules/http2/h2_headers.h =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_headers.h 2019-08-19 16:16:12.879818882 +0200 +++ httpd-2.4.33/modules/http2/h2_headers.h 2019-08-19 16:16:13.099820280 +0200 @@ -59,12 +59,18 @@ h2_headers *h2_headers_rcreate(request_r apr_table_t *header, apr_pool_t *pool); /** - * Clone the headers into another pool. This will not copy any + * Copy the headers into another pool. This will not copy any * header strings. */ h2_headers *h2_headers_copy(apr_pool_t *pool, h2_headers *h); /** + * Clone the headers into another pool. This will also clone any + * header strings. + */ +h2_headers *h2_headers_clone(apr_pool_t *pool, h2_headers *h); + +/** * Create the headers for the given error. * @param stream_id id of the stream to create the headers for * @param type the error code Index: httpd-2.4.33/modules/http2/h2_mplx.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_mplx.c 2019-08-19 16:16:12.975819491 +0200 +++ httpd-2.4.33/modules/http2/h2_mplx.c 2019-08-19 16:17:34.276336122 +0200 @@ -53,8 +53,12 @@ typedef struct { h2_mplx *m; h2_stream *stream; apr_time_t now; + apr_size_t count; } stream_iter_ctx; +static apr_status_t mplx_be_happy(h2_mplx *m); +static apr_status_t mplx_be_annoyed(h2_mplx *m); + apr_status_t h2_mplx_child_init(apr_pool_t *pool, server_rec *s) { return APR_SUCCESS; @@ -98,7 +102,7 @@ static void stream_input_consumed(void * static void stream_joined(h2_mplx *m, h2_stream *stream) { - ap_assert(!stream->task || stream->task->worker_done); + ap_assert(!h2_task_has_started(stream->task) || stream->task->worker_done); h2_ihash_remove(m->shold, stream->id); h2_ihash_add(m->spurge, stream); @@ -124,7 +128,7 @@ static void stream_cleanup(h2_mplx *m, h h2_ififo_remove(m->readyq, stream->id); h2_ihash_add(m->shold, stream); - if (!stream->task || stream->task->worker_done) { + if (!h2_task_has_started(stream->task) || stream->task->done_done) { stream_joined(m, stream); } else if (stream->task) { @@ -194,7 +198,6 @@ h2_mplx *h2_mplx_create(conn_rec *c, ser m->stream_max_mem = h2_config_sgeti(s, H2_CONF_STREAM_MAX_MEM); m->streams = h2_ihash_create(m->pool, offsetof(h2_stream,id)); - m->sredo = h2_ihash_create(m->pool, offsetof(h2_stream,id)); m->shold = h2_ihash_create(m->pool, offsetof(h2_stream,id)); m->spurge = h2_ihash_create(m->pool, offsetof(h2_stream,id)); m->q = h2_iq_create(m->pool, m->max_streams); @@ -208,8 +211,8 @@ h2_mplx *h2_mplx_create(conn_rec *c, ser m->workers = workers; m->max_active = workers->max_workers; m->limit_active = 6; /* the original h1 max parallel connections */ - m->last_limit_change = m->last_idle_block = apr_time_now(); - m->limit_change_interval = apr_time_from_msec(100); + m->last_mood_change = apr_time_now(); + m->mood_update_interval = apr_time_from_msec(100); m->spare_slaves = apr_array_make(m->pool, 10, sizeof(conn_rec*)); } @@ -431,6 +434,10 @@ void h2_mplx_release_and_join(h2_mplx *m /* How to shut down a h2 connection: * 1. cancel all streams still active */ + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): release, %d/%d/%d streams (total/hold/purge), %d active tasks", + m->id, (int)h2_ihash_count(m->streams), + (int)h2_ihash_count(m->shold), (int)h2_ihash_count(m->spurge), m->tasks_active); while (!h2_ihash_iter(m->streams, stream_cancel_iter, m)) { /* until empty */ } @@ -456,10 +463,10 @@ void h2_mplx_release_and_join(h2_mplx *m h2_ihash_iter(m->shold, report_stream_iter, m); } } - ap_assert(m->tasks_active == 0); m->join_wait = NULL; - + /* 4. With all workers done, all streams should be in spurge */ + ap_assert(m->tasks_active == 0); if (!h2_ihash_empty(m->shold)) { ap_log_cerror(APLOG_MARK, APLOG_WARNING, 0, m->c, APLOGNO(03516) "h2_mplx(%ld): unexpected %d streams in hold", @@ -470,8 +477,7 @@ void h2_mplx_release_and_join(h2_mplx *m m->c->aborted = old_aborted; H2_MPLX_LEAVE(m); - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld): released", m->id); + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, "h2_mplx(%ld): released", m->id); } apr_status_t h2_mplx_stream_cleanup(h2_mplx *m, h2_stream *stream) @@ -709,7 +715,6 @@ static h2_task *next_stream_task(h2_mplx } if (!stream->task) { - if (sid > m->max_stream_started) { m->max_stream_started = sid; } @@ -728,9 +733,9 @@ static h2_task *next_stream_task(h2_mplx "create task")); return NULL; } - } + stream->task->started_at = apr_time_now(); ++m->tasks_active; return stream->task; } @@ -778,32 +783,18 @@ static void task_done(h2_mplx *m, h2_tas "h2_mplx(%s): request done, %f ms elapsed", task->id, (task->done_at - task->started_at) / 1000.0); - if (task->started_at > m->last_idle_block) { - /* this task finished without causing an 'idle block', e.g. - * a block by flow control. - */ - if (task->done_at- m->last_limit_change >= m->limit_change_interval - && m->limit_active < m->max_active) { - /* Well behaving stream, allow it more workers */ - m->limit_active = H2MIN(m->limit_active * 2, - m->max_active); - m->last_limit_change = task->done_at; - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld): increase worker limit to %d", - m->id, m->limit_active); - } + if (task->c && !task->c->aborted && task->started_at > m->last_mood_change) { + mplx_be_happy(m); } - + ap_assert(task->done_done == 0); stream = h2_ihash_get(m->streams, task->stream_id); if (stream) { /* stream not done yet. */ - if (!m->aborted && h2_ihash_get(m->sredo, stream->id)) { + if (!m->aborted && task->redo) { /* reset and schedule again */ - task->worker_done = 0; h2_task_redo(task); - h2_ihash_remove(m->sredo, stream->id); h2_iq_add(m->q, stream->id, NULL, NULL); ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, m->c, H2_STRM_MSG(stream, "redo, added to q")); @@ -848,8 +839,8 @@ void h2_mplx_task_done(h2_mplx *m, h2_ta { H2_MPLX_ENTER_ALWAYS(m); - task_done(m, task); --m->tasks_active; + task_done(m, task); if (m->join_wait) { apr_thread_cond_signal(m->join_wait); @@ -867,94 +858,162 @@ void h2_mplx_task_done(h2_mplx *m, h2_ta * h2_mplx DoS protection ******************************************************************************/ -static int latest_repeatable_unsubmitted_iter(void *data, void *val) +static int timed_out_busy_iter(void *data, void *val) { stream_iter_ctx *ctx = data; h2_stream *stream = val; - if (stream->task && !stream->task->worker_done - && h2_task_can_redo(stream->task) - && !h2_ihash_get(ctx->m->sredo, stream->id)) { - if (!h2_stream_is_ready(stream)) { - /* this task occupies a worker, the response has not been submitted - * yet, not been cancelled and it is a repeatable request - * -> it can be re-scheduled later */ - if (!ctx->stream - || (ctx->stream->task->started_at < stream->task->started_at)) { - /* we did not have one or this one was started later */ - ctx->stream = stream; - } - } + if (h2_task_has_started(stream->task) && !stream->task->worker_done + && (ctx->now - stream->task->started_at) > stream->task->timeout) { + /* timed out stream occupying a worker, found */ + ctx->stream = stream; + return 0; } return 1; } -static h2_stream *get_latest_repeatable_unsubmitted_stream(h2_mplx *m) +static h2_stream *get_timed_out_busy_stream(h2_mplx *m) { stream_iter_ctx ctx; ctx.m = m; ctx.stream = NULL; - h2_ihash_iter(m->streams, latest_repeatable_unsubmitted_iter, &ctx); + ctx.now = apr_time_now(); + h2_ihash_iter(m->streams, timed_out_busy_iter, &ctx); return ctx.stream; } -static int timed_out_busy_iter(void *data, void *val) +static int latest_repeatable_unsubmitted_iter(void *data, void *val) { stream_iter_ctx *ctx = data; h2_stream *stream = val; - if (stream->task && !stream->task->worker_done - && (ctx->now - stream->task->started_at) > stream->task->timeout) { - /* timed out stream occupying a worker, found */ - ctx->stream = stream; - return 0; + + if (!stream->task) goto leave; + if (!h2_task_has_started(stream->task) || stream->task->worker_done) goto leave; + if (h2_stream_is_ready(stream)) goto leave; + if (stream->task->redo) { + ++ctx->count; + goto leave; + } + if (h2_task_can_redo(stream->task)) { + /* this task occupies a worker, the response has not been submitted + * yet, not been cancelled and it is a repeatable request + * -> we could redo it later */ + if (!ctx->stream + || (ctx->stream->task->started_at < stream->task->started_at)) { + /* we did not have one or this one was started later */ + ctx->stream = stream; + } } +leave: return 1; } -static h2_stream *get_timed_out_busy_stream(h2_mplx *m) +static apr_status_t assess_task_to_throttle(h2_task **ptask, h2_mplx *m) { stream_iter_ctx ctx; + + /* count the running tasks already marked for redo and get one that could + * be throttled */ + *ptask = NULL; ctx.m = m; ctx.stream = NULL; - ctx.now = apr_time_now(); - h2_ihash_iter(m->streams, timed_out_busy_iter, &ctx); - return ctx.stream; + ctx.count = 0; + h2_ihash_iter(m->streams, latest_repeatable_unsubmitted_iter, &ctx); + if (m->tasks_active - ctx.count > m->limit_active) { + /* we are above the limit of running tasks, accounting for the ones + * already throttled. */ + if (ctx.stream && ctx.stream->task) { + *ptask = ctx.stream->task; + return APR_EAGAIN; + } + /* above limit, be seeing no candidate for easy throttling */ + if (get_timed_out_busy_stream(m)) { + /* Too many busy workers, unable to cancel enough streams + * and with a busy, timed out stream, we tell the client + * to go away... */ + return APR_TIMEUP; + } + } + return APR_SUCCESS; } static apr_status_t unschedule_slow_tasks(h2_mplx *m) { - h2_stream *stream; - int n; + h2_task *task; + apr_status_t rv; /* Try to get rid of streams that occupy workers. Look for safe requests * that are repeatable. If none found, fail the connection. */ - n = (m->tasks_active - m->limit_active - (int)h2_ihash_count(m->sredo)); - while (n > 0 && (stream = get_latest_repeatable_unsubmitted_stream(m))) { + while (APR_EAGAIN == (rv = assess_task_to_throttle(&task, m))) { ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, m->c, "h2_mplx(%s): unschedule, resetting task for redo later", - stream->task->id); - h2_task_rst(stream->task, H2_ERR_CANCEL); - h2_ihash_add(m->sredo, stream); - --n; + task->id); + task->redo = 1; + h2_task_rst(task, H2_ERR_CANCEL); } - if ((m->tasks_active - h2_ihash_count(m->sredo)) > m->limit_active) { - h2_stream *stream = get_timed_out_busy_stream(m); - if (stream) { - /* Too many busy workers, unable to cancel enough streams - * and with a busy, timed out stream, we tell the client - * to go away... */ - return APR_TIMEUP; - } + return rv; +} + +static apr_status_t mplx_be_happy(h2_mplx *m) +{ + apr_time_t now; + + --m->irritations_since; + now = apr_time_now(); + if (m->limit_active < m->max_active + && (now - m->last_mood_change >= m->mood_update_interval + || m->irritations_since < -m->limit_active)) { + m->limit_active = H2MIN(m->limit_active * 2, m->max_active); + m->last_mood_change = now; + m->irritations_since = 0; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): mood update, increasing worker limit to %d", + m->id, m->limit_active); } return APR_SUCCESS; } -apr_status_t h2_mplx_idle(h2_mplx *m) +static apr_status_t mplx_be_annoyed(h2_mplx *m) { apr_status_t status = APR_SUCCESS; apr_time_t now; + + ++m->irritations_since; + now = apr_time_now(); + if (m->limit_active > 2 && + ((now - m->last_mood_change >= m->mood_update_interval) + || (m->irritations_since >= m->limit_active))) { + + if (m->limit_active > 16) { + m->limit_active = 16; + } + else if (m->limit_active > 8) { + m->limit_active = 8; + } + else if (m->limit_active > 4) { + m->limit_active = 4; + } + else if (m->limit_active > 2) { + m->limit_active = 2; + } + m->last_mood_change = now; + m->irritations_since = 0; + ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, + "h2_mplx(%ld): mood update, decreasing worker limit to %d", + m->id, m->limit_active); + } + + if (m->tasks_active > m->limit_active) { + status = unschedule_slow_tasks(m); + } + return status; +} + +apr_status_t h2_mplx_idle(h2_mplx *m) +{ + apr_status_t status = APR_SUCCESS; apr_size_t scount; H2_MPLX_ENTER(m); @@ -974,31 +1033,7 @@ apr_status_t h2_mplx_idle(h2_mplx *m) * of busy workers we allow for this connection until it * well behaves. */ - now = apr_time_now(); - m->last_idle_block = now; - if (m->limit_active > 2 - && now - m->last_limit_change >= m->limit_change_interval) { - if (m->limit_active > 16) { - m->limit_active = 16; - } - else if (m->limit_active > 8) { - m->limit_active = 8; - } - else if (m->limit_active > 4) { - m->limit_active = 4; - } - else if (m->limit_active > 2) { - m->limit_active = 2; - } - m->last_limit_change = now; - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, - "h2_mplx(%ld): decrease worker limit to %d", - m->id, m->limit_active); - } - - if (m->tasks_active > m->limit_active) { - status = unschedule_slow_tasks(m); - } + status = mplx_be_annoyed(m); } else if (!h2_iq_empty(m->q)) { ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, m->c, @@ -1093,11 +1128,24 @@ int h2_mplx_awaits_data(h2_mplx *m) if (h2_ihash_empty(m->streams)) { waiting = 0; } - else if (!m->tasks_active && !h2_ififo_count(m->readyq) - && h2_iq_empty(m->q)) { + else if (!m->tasks_active && !h2_ififo_count(m->readyq) && h2_iq_empty(m->q)) { waiting = 0; } H2_MPLX_LEAVE(m); return waiting; } + +apr_status_t h2_mplx_client_rst(h2_mplx *m, int stream_id) +{ + h2_stream *stream; + apr_status_t status = APR_SUCCESS; + + H2_MPLX_ENTER_ALWAYS(m); + stream = h2_ihash_get(m->streams, stream_id); + if (stream && stream->task) { + status = mplx_be_annoyed(m); + } + H2_MPLX_LEAVE(m); + return status; +} Index: httpd-2.4.33/modules/http2/h2_mplx.h =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_mplx.h 2019-08-19 16:16:12.975819491 +0200 +++ httpd-2.4.33/modules/http2/h2_mplx.h 2019-08-19 16:16:13.099820280 +0200 @@ -63,7 +63,6 @@ struct h2_mplx { unsigned int is_registered; /* is registered at h2_workers */ struct h2_ihash_t *streams; /* all streams currently processing */ - struct h2_ihash_t *sredo; /* all streams that need to be re-started */ struct h2_ihash_t *shold; /* all streams done with task ongoing */ struct h2_ihash_t *spurge; /* all streams done, ready for destroy */ @@ -77,10 +76,10 @@ struct h2_mplx { int tasks_active; /* # of tasks being processed from this mplx */ int limit_active; /* current limit on active tasks, dynamic */ int max_active; /* max, hard limit # of active tasks in a process */ - apr_time_t last_idle_block; /* last time, this mplx entered IDLE while - * streams were ready */ - apr_time_t last_limit_change; /* last time, worker limit changed */ - apr_interval_time_t limit_change_interval; + + apr_time_t last_mood_change; /* last time, we worker limit changed */ + apr_interval_time_t mood_update_interval; /* how frequent we update at most */ + int irritations_since; /* irritations (>0) or happy events (<0) since last mood change */ apr_thread_mutex_t *lock; struct apr_thread_cond_t *added_output; @@ -205,6 +204,8 @@ typedef int h2_mplx_stream_cb(struct h2_ apr_status_t h2_mplx_stream_do(h2_mplx *m, h2_mplx_stream_cb *cb, void *ctx); +apr_status_t h2_mplx_client_rst(h2_mplx *m, int stream_id); + /******************************************************************************* * Output handling of streams. ******************************************************************************/ Index: httpd-2.4.33/modules/http2/h2_proxy_session.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_proxy_session.c 2019-08-19 16:16:12.975819491 +0200 +++ httpd-2.4.33/modules/http2/h2_proxy_session.c 2019-08-19 16:16:13.099820280 +0200 @@ -545,7 +545,7 @@ static ssize_t stream_request_data(nghtt } stream->data_sent += readlen; - ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, stream->r, APLOGNO(03468) + ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, stream->r, APLOGNO(10179) "h2_proxy_stream(%d): request DATA %ld, %ld" " total, flags=%d", stream->id, (long)readlen, (long)stream->data_sent, Index: httpd-2.4.33/modules/http2/h2_session.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_session.c 2019-08-19 16:16:12.975819491 +0200 +++ httpd-2.4.33/modules/http2/h2_session.c 2019-08-19 16:16:13.103820304 +0200 @@ -390,9 +390,14 @@ static int on_frame_recv_cb(nghttp2_sess (int)frame->rst_stream.error_code); stream = h2_session_stream_get(session, frame->hd.stream_id); if (stream && stream->initiated_on) { + /* A stream reset on a request we sent it. Normal, when the + * client does not want it. */ ++session->pushes_reset; } else { + /* A stream reset on a request it sent us. Could happen in a browser + * when the user navigates away or cancels loading - maybe. */ + h2_mplx_client_rst(session->mplx, frame->hd.stream_id); ++session->streams_reset; } break; @@ -1703,7 +1708,7 @@ static void transit(h2_session *session, * that already served requests - not fair. */ session->idle_sync_until = apr_time_now() + apr_time_from_sec(1); s = "timeout"; - timeout = H2MAX(session->s->timeout, session->s->keep_alive_timeout); + timeout = session->s->timeout; update_child_status(session, SERVER_BUSY_READ, "idle"); ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, H2_SSSN_LOG("", session, "enter idle, timeout = %d sec"), @@ -1711,8 +1716,8 @@ static void transit(h2_session *session, } else if (session->open_streams) { s = "timeout"; - timeout = session->s->keep_alive_timeout; - update_child_status(session, SERVER_BUSY_KEEPALIVE, "idle"); + timeout = session->s->timeout; + update_child_status(session, SERVER_BUSY_READ, "idle"); } else { /* normal keepalive setup */ @@ -1977,6 +1982,7 @@ static void on_stream_state_enter(void * ev_stream_closed(session, stream); break; case H2_SS_CLEANUP: + nghttp2_session_set_stream_user_data(session->ngh2, stream->id, NULL); h2_mplx_stream_cleanup(session->mplx, stream); break; default: @@ -2169,6 +2175,14 @@ apr_status_t h2_session_process(h2_sessi session->have_read = 1; } else if (APR_STATUS_IS_EAGAIN(status) || APR_STATUS_IS_TIMEUP(status)) { + status = h2_mplx_idle(session->mplx); + if (status == APR_EAGAIN) { + break; + } + else if (status != APR_SUCCESS) { + dispatch_event(session, H2_SESSION_EV_CONN_ERROR, + H2_ERR_ENHANCE_YOUR_CALM, "less is more"); + } status = APR_EAGAIN; goto out; } Index: httpd-2.4.33/modules/http2/h2_stream.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_stream.c 2019-08-19 16:16:12.975819491 +0200 +++ httpd-2.4.33/modules/http2/h2_stream.c 2019-08-19 16:16:13.103820304 +0200 @@ -397,13 +397,8 @@ apr_status_t h2_stream_send_frame(h2_str /* start pushed stream */ ap_assert(stream->request == NULL); ap_assert(stream->rtmp != NULL); - status = h2_request_end_headers(stream->rtmp, stream->pool, 1, 0); - if (status != APR_SUCCESS) { - return status; - } - set_policy_for(stream, stream->rtmp); - stream->request = stream->rtmp; - stream->rtmp = NULL; + status = h2_stream_end_headers(stream, 1, 0); + if (status != APR_SUCCESS) goto leave; break; default: @@ -415,6 +410,7 @@ apr_status_t h2_stream_send_frame(h2_str if (status == APR_SUCCESS && eos) { status = transit(stream, on_event(stream, H2_SEV_CLOSED_L)); } +leave: return status; } @@ -455,13 +451,8 @@ apr_status_t h2_stream_recv_frame(h2_str * to abort the connection here, since this is clearly a protocol error */ return APR_EINVAL; } - status = h2_request_end_headers(stream->rtmp, stream->pool, eos, frame_len); - if (status != APR_SUCCESS) { - return status; - } - set_policy_for(stream, stream->rtmp); - stream->request = stream->rtmp; - stream->rtmp = NULL; + status = h2_stream_end_headers(stream, eos, frame_len); + if (status != APR_SUCCESS) goto leave; } break; @@ -472,6 +463,7 @@ apr_status_t h2_stream_recv_frame(h2_str if (status == APR_SUCCESS && eos) { status = transit(stream, on_event(stream, H2_SEV_CLOSED_R)); } +leave: return status; } @@ -683,6 +675,8 @@ static apr_status_t add_trailer(h2_strea hvalue = apr_pstrndup(stream->pool, value, vlen); h2_util_camel_case_header(hname, nlen); apr_table_mergen(stream->trailers, hname, hvalue); + ap_log_cerror(APLOG_MARK, APLOG_TRACE2, 0, c, + H2_STRM_MSG(stream, "added trailer '%s: %s'"), hname, hvalue); return APR_SUCCESS; } @@ -702,15 +696,19 @@ apr_status_t h2_stream_add_header(h2_str if (name[0] == ':') { if ((vlen) > session->s->limit_req_line) { /* pseudo header: approximation of request line size check */ - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - H2_STRM_MSG(stream, "pseudo %s too long"), name); + ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, session->c, + H2_STRM_LOG(APLOGNO(10178), stream, + "Request pseudo header exceeds " + "LimitRequestFieldSize: %s"), name); error = HTTP_REQUEST_URI_TOO_LARGE; } } else if ((nlen + 2 + vlen) > session->s->limit_req_fieldsize) { /* header too long */ - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - H2_STRM_MSG(stream, "header %s too long"), name); + ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, session->c, + H2_STRM_LOG(APLOGNO(10180), stream,"Request header exceeds " + "LimitRequestFieldSize: %.*s"), + (int)H2MIN(nlen, 80), name); error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE; } @@ -722,8 +720,9 @@ apr_status_t h2_stream_add_header(h2_str h2_stream_rst(stream, H2_ERR_ENHANCE_YOUR_CALM); return APR_ECONNRESET; } - ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c, - H2_STRM_MSG(stream, "too many header lines")); + ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, session->c, + H2_STRM_LOG(APLOGNO(10181), stream, "Number of request headers " + "exceeds LimitRequestFields")); error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE; } @@ -753,6 +752,47 @@ apr_status_t h2_stream_add_header(h2_str } return status; } + +typedef struct { + apr_size_t maxlen; + const char *failed_key; +} val_len_check_ctx; + +static int table_check_val_len(void *baton, const char *key, const char *value) +{ + val_len_check_ctx *ctx = baton; + + if (strlen(value) <= ctx->maxlen) return 1; + ctx->failed_key = key; + return 0; +} + +apr_status_t h2_stream_end_headers(h2_stream *stream, int eos, size_t raw_bytes) +{ + apr_status_t status; + val_len_check_ctx ctx; + + status = h2_request_end_headers(stream->rtmp, stream->pool, eos, raw_bytes); + if (APR_SUCCESS == status) { + set_policy_for(stream, stream->rtmp); + stream->request = stream->rtmp; + stream->rtmp = NULL; + + ctx.maxlen = stream->session->s->limit_req_fieldsize; + ctx.failed_key = NULL; + apr_table_do(table_check_val_len, &ctx, stream->request->headers, NULL); + if (ctx.failed_key) { + ap_log_cerror(APLOG_MARK, APLOG_INFO, 0, stream->session->c, + H2_STRM_LOG(APLOGNO(), stream,"Request header exceeds " + "LimitRequestFieldSize: %.*s"), + (int)H2MIN(strlen(ctx.failed_key), 80), ctx.failed_key); + set_error_response(stream, HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE); + /* keep on returning APR_SUCCESS, so that we send a HTTP response and + * do not RST the stream. */ + } + } + return status; +} static apr_bucket *get_first_headers_bucket(apr_bucket_brigade *bb) { Index: httpd-2.4.33/modules/http2/h2_stream.h =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_stream.h 2019-08-19 16:16:12.879818882 +0200 +++ httpd-2.4.33/modules/http2/h2_stream.h 2019-08-19 16:16:13.103820304 +0200 @@ -198,6 +198,10 @@ apr_status_t h2_stream_set_request_rec(h apr_status_t h2_stream_add_header(h2_stream *stream, const char *name, size_t nlen, const char *value, size_t vlen); + +/* End the contruction of request headers */ +apr_status_t h2_stream_end_headers(h2_stream *stream, int eos, size_t raw_bytes); + apr_status_t h2_stream_send_frame(h2_stream *stream, int frame_type, int flags, size_t frame_len); apr_status_t h2_stream_recv_frame(h2_stream *stream, int frame_type, int flags, size_t frame_len); Index: httpd-2.4.33/modules/http2/h2_task.c =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_task.c 2019-08-19 16:16:12.975819491 +0200 +++ httpd-2.4.33/modules/http2/h2_task.c 2019-08-19 16:16:13.103820304 +0200 @@ -406,8 +406,15 @@ int h2_task_can_redo(h2_task *task) { || !strcmp("OPTIONS", task->request->method)); } +int h2_task_has_started(h2_task *task) +{ + return task && task->started_at != 0; +} + void h2_task_redo(h2_task *task) { + task->started_at = 0; + task->worker_done = 0; task->rst_error = 0; } @@ -546,7 +553,6 @@ apr_status_t h2_task_do(h2_task *task, a ap_assert(task); c = task->c; task->worker_started = 1; - task->started_at = apr_time_now(); if (c->master) { /* Each conn_rec->id is supposed to be unique at a point in time. Since Index: httpd-2.4.33/modules/http2/h2_task.h =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_task.h 2019-08-19 16:16:12.975819491 +0200 +++ httpd-2.4.33/modules/http2/h2_task.h 2019-08-19 16:16:13.103820304 +0200 @@ -80,6 +80,7 @@ struct h2_task { unsigned int filters_set : 1; unsigned int worker_started : 1; /* h2_worker started processing */ + unsigned int redo : 1; /* was throttled, should be restarted later */ int worker_done; /* h2_worker finished */ int done_done; /* task_done has been handled */ @@ -101,6 +102,7 @@ apr_status_t h2_task_do(h2_task *task, a void h2_task_redo(h2_task *task); int h2_task_can_redo(h2_task *task); +int h2_task_has_started(h2_task *task); /** * Reset the task with the given error code, resets all input/output. Index: httpd-2.4.33/modules/http2/h2_version.h =================================================================== --- httpd-2.4.33.orig/modules/http2/h2_version.h 2019-08-19 16:16:12.975819491 +0200 +++ httpd-2.4.33/modules/http2/h2_version.h 2019-08-19 16:16:13.103820304 +0200 @@ -27,7 +27,7 @@ * @macro * Version number of the http2 module as c string */ -#define MOD_HTTP2_VERSION "1.14.1" +#define MOD_HTTP2_VERSION "1.15.4" /** * @macro @@ -35,6 +35,6 @@ * release. This is a 24 bit number with 8 bits for major number, 8 bits * for minor and 8 bits for patch. Version 1.2.3 becomes 0x010203. */ -#define MOD_HTTP2_VERSION_NUM 0x010e01 +#define MOD_HTTP2_VERSION_NUM 0x010f04 #endif /* mod_h2_h2_version_h */ Index: httpd-2.4.33/server/eor_bucket.c =================================================================== --- httpd-2.4.33.orig/server/eor_bucket.c 2010-06-14 21:07:02.000000000 +0200 +++ httpd-2.4.33/server/eor_bucket.c 2019-08-19 16:16:13.103820304 +0200 @@ -19,17 +19,22 @@ #include "http_protocol.h" #include "scoreboard.h" +typedef struct { + apr_bucket_refcount refcount; + request_rec *data; +} ap_bucket_eor; + static apr_status_t eor_bucket_cleanup(void *data) { - apr_bucket *b = (apr_bucket *)data; - request_rec *r = (request_rec *)b->data; + request_rec **rp = data; - if (r != NULL) { + if (*rp) { + request_rec *r = *rp; /* * If eor_bucket_destroy is called after us, this prevents * eor_bucket_destroy from trying to destroy the pool again. */ - b->data = NULL; + *rp = NULL; /* Update child status and log the transaction */ ap_update_child_status(r->connection->sbh, SERVER_BUSY_LOG, r); ap_run_log_transaction(r); @@ -50,11 +55,13 @@ static apr_status_t eor_bucket_read(apr_ AP_DECLARE(apr_bucket *) ap_bucket_eor_make(apr_bucket *b, request_rec *r) { - b->length = 0; - b->start = 0; - b->data = r; - b->type = &ap_bucket_type_eor; + ap_bucket_eor *h; + + h = apr_bucket_alloc(sizeof(*h), b->list); + h->data = r; + b = apr_bucket_shared_make(b, h, 0, 0); + b->type = &ap_bucket_type_eor; return b; } @@ -66,7 +73,9 @@ AP_DECLARE(apr_bucket *) ap_bucket_eor_c APR_BUCKET_INIT(b); b->free = apr_bucket_free; b->list = list; + b = ap_bucket_eor_make(b, r); if (r) { + ap_bucket_eor *h = b->data; /* * Register a cleanup for the request pool as the eor bucket could * have been allocated from a different pool then the request pool @@ -76,18 +85,22 @@ AP_DECLARE(apr_bucket *) ap_bucket_eor_c * We need to use a pre-cleanup here because a module may create a * sub-pool which is still needed during the log_transaction hook. */ - apr_pool_pre_cleanup_register(r->pool, (void *)b, eor_bucket_cleanup); + apr_pool_pre_cleanup_register(r->pool, &h->data, eor_bucket_cleanup); } - return ap_bucket_eor_make(b, r); + return b; } static void eor_bucket_destroy(void *data) { - request_rec *r = (request_rec *)data; + ap_bucket_eor *h = data; - if (r) { - /* eor_bucket_cleanup will be called when the pool gets destroyed */ - apr_pool_destroy(r->pool); + if (apr_bucket_shared_destroy(h)) { + request_rec *r = h->data; + if (r) { + /* eor_bucket_cleanup will be called when the pool gets destroyed */ + apr_pool_destroy(r->pool); + } + apr_bucket_free(h); } } @@ -97,6 +110,6 @@ AP_DECLARE_DATA const apr_bucket_type_t eor_bucket_read, apr_bucket_setaside_noop, apr_bucket_split_notimpl, - apr_bucket_simple_copy + apr_bucket_shared_copy }; Index: httpd-2.4.33/server/mpm/event/event.c =================================================================== --- httpd-2.4.33.orig/server/mpm/event/event.c 2019-08-19 16:16:12.995819619 +0200 +++ httpd-2.4.33/server/mpm/event/event.c 2019-08-19 16:16:13.103820304 +0200 @@ -1111,10 +1111,11 @@ read_request: "network write failure in core output filter"); cs->pub.state = CONN_STATE_LINGER; } - else if (c->data_in_output_filters) { + else if (c->data_in_output_filters || + cs->pub.sense == CONN_SENSE_WANT_READ) { /* Still in WRITE_COMPLETION_STATE: - * Set a write timeout for this connection, and let the - * event thread poll for writeability. + * Set a read/write timeout for this connection, and let the + * event thread poll for read/writeability. */ cs->queue_timestamp = apr_time_now(); notify_suspend(cs);
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