mirror of
https://github.com/moparisthebest/curl
synced 2024-12-21 15:48:49 -05:00
pingpong: return error when trying to send without connection
When imap_done() got called before a connection is setup, it would try to "finish up" and dereffed a NULL pointer. Test case 1553 managed to reproduce. I had to actually use a host name to try to resolve to slow it down, as using the normal local server IP will make libcurl get a connection in the first curl_multi_perform() loop and then the bug doesn't trigger. Fixes #1953 Assisted-by: Max Dymond
This commit is contained in:
Daniel Stenberg
parent
0af5ac27c3
commit
5b54df06d2
@ -168,16 +168,22 @@ CURLcode Curl_pp_vsendf(struct pingpong *pp,
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char *s;
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CURLcode result;
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struct connectdata *conn = pp->conn;
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struct Curl_easy *data = conn->data;
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struct Curl_easy *data;
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#ifdef HAVE_GSSAPI
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enum protection_level data_sec = conn->data_prot;
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enum protection_level data_sec;
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#endif
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DEBUGASSERT(pp->sendleft == 0);
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DEBUGASSERT(pp->sendsize == 0);
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DEBUGASSERT(pp->sendthis == NULL);
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if(!conn)
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/* can't send without a connection! */
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return CURLE_SEND_ERROR;
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data = conn->data;
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fmt_crlf = aprintf("%s\r\n", fmt); /* append a trailing CRLF */
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if(!fmt_crlf)
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return CURLE_OUT_OF_MEMORY;
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@ -205,6 +211,7 @@ CURLcode Curl_pp_vsendf(struct pingpong *pp,
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result = Curl_write(conn, conn->sock[FIRSTSOCKET], s, write_len,
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&bytes_written);
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#ifdef HAVE_GSSAPI
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data_sec = conn->data_prot;
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DEBUGASSERT(data_sec > PROT_NONE && data_sec < PROT_LAST);
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conn->data_prot = data_sec;
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#endif
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@ -169,7 +169,7 @@ test1520 test1521 \
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test1525 test1526 test1527 test1528 test1529 test1530 test1531 test1532 \
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test1533 test1534 test1535 test1536 test1537 test1538 \
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test1540 \
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test1550 test1551 test1552 \
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test1550 test1551 test1552 test1553 \
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test1600 test1601 test1602 test1603 test1604 test1605 test1606 \
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\
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test1700 test1701 test1702 \
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52
tests/data/test1553
Normal file
52
tests/data/test1553
Normal file
@ -0,0 +1,52 @@
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<testcase>
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<info>
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<keywords>
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IMAP
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Clear Text
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FETCH
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</keywords>
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</info>
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#
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# Server-side
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<reply>
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<data>
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From: me@somewhere
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To: fake@nowhere
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body
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--
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yours sincerely
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</data>
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<datacheck>
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</datacheck>
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<servercmd>
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</servercmd>
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</reply>
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#
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# Client-side
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<client>
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<server>
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imap
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</server>
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<name>
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IMAP cleanup before a connection was created
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</name>
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# tool is what to use instead of 'curl'
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<tool>
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lib1553
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</tool>
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<command>
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imap://non-existing-host.haxx.se:%IMAPPORT/1553
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</command>
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</client>
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#
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# Verify data after the test has been "shot"
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<verify>
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<protocol>
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</protocol>
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</verify>
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</testcase>
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@ -27,7 +27,7 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect \
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lib1525 lib1526 lib1527 lib1528 lib1529 lib1530 lib1531 lib1532 lib1533 \
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lib1534 lib1535 lib1536 lib1537 lib1538 \
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lib1540 \
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lib1550 lib1551 lib1552 \
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lib1550 lib1551 lib1552 lib1553 \
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lib1900 \
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lib2033
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@ -457,6 +457,9 @@ lib1551_CPPFLAGS = $(AM_CPPFLAGS)
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lib1552_SOURCES = lib1552.c $(SUPPORTFILES) $(TESTUTIL)
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lib1552_CPPFLAGS = $(AM_CPPFLAGS)
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lib1553_SOURCES = lib1553.c $(SUPPORTFILES) $(TESTUTIL)
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lib1553_CPPFLAGS = $(AM_CPPFLAGS)
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lib1900_SOURCES = lib1900.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
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lib1900_LDADD = $(TESTUTIL_LIBS)
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lib1900_CPPFLAGS = $(AM_CPPFLAGS)
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109
tests/libtest/lib1553.c
Normal file
109
tests/libtest/lib1553.c
Normal file
@ -0,0 +1,109 @@
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "test.h"
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#include "testutil.h"
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#include "warnless.h"
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#include "memdebug.h"
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#define TEST_HANG_TIMEOUT 60 * 1000
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static int xferinfo(void *p,
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curl_off_t dltotal, curl_off_t dlnow,
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curl_off_t ultotal, curl_off_t ulnow)
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{
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(void)p;
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(void)dlnow;
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(void)dltotal;
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(void)ulnow;
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(void)ultotal;
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fprintf(stderr, "xferinfo fail!\n");
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return 1; /* fail as fast as we can */
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}
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int test(char *URL)
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{
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CURL *curls = NULL;
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CURLM *multi = NULL;
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int still_running;
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int i = 0;
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int res = 0;
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curl_mimepart *field = NULL;
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curl_mime *mime = NULL;
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int counter = 1;
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start_test_timing();
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global_init(CURL_GLOBAL_ALL);
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multi_init(multi);
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easy_init(curls);
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mime = curl_mime_init(curls);
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field = curl_mime_addpart(mime);
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curl_mime_name(field, "name");
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curl_mime_data(field, "value", CURL_ZERO_TERMINATED);
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easy_setopt(curls, CURLOPT_URL, URL);
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easy_setopt(curls, CURLOPT_HEADER, 1L);
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easy_setopt(curls, CURLOPT_VERBOSE, 1L);
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easy_setopt(curls, CURLOPT_MIMEPOST, mime);
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easy_setopt(curls, CURLOPT_USERPWD, "u:s");
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easy_setopt(curls, CURLOPT_XFERINFOFUNCTION, xferinfo);
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easy_setopt(curls, CURLOPT_NOPROGRESS, 1L);
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multi_add_handle(multi, curls);
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multi_perform(multi, &still_running);
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abort_on_test_timeout();
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while(still_running && counter--) {
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int num;
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res = curl_multi_wait(multi, NULL, 0, TEST_HANG_TIMEOUT, &num);
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if(res != CURLM_OK) {
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printf("curl_multi_wait() returned %d\n", res);
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res = TEST_ERR_MAJOR_BAD;
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goto test_cleanup;
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}
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abort_on_test_timeout();
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multi_perform(multi, &still_running);
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abort_on_test_timeout();
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}
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test_cleanup:
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curl_mime_free(mime);
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curl_multi_remove_handle(multi, curls);
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curl_multi_cleanup(multi);
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curl_easy_cleanup(curls);
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curl_global_cleanup();
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if(res)
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i = res;
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return i; /* return the final return code */
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}
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