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https://gitlab.isc.org/isc-projects/bind9
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e32d354f75
4005. [func] The buffer used for returning text from rndc commands is now dynamically resizable, allowing arbitrarily large amounts of text to be sent back to the client. (Prior to this change, it was possible for the output of "rndc tsig-list" to be truncated.) [RT #37731]
145 lines
3.5 KiB
C
145 lines
3.5 KiB
C
/*
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* Copyright (C) 2014 Internet Systems Consortium, Inc. ("ISC")
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <atf-c.h>
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#include "isctest.h"
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#include <isc/buffer.h>
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#include <isc/result.h>
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ATF_TC(isc_buffer_reserve);
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ATF_TC_HEAD(isc_buffer_reserve, tc) {
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atf_tc_set_md_var(tc, "descr", "reserve space in dynamic buffers");
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}
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ATF_TC_BODY(isc_buffer_reserve, tc) {
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isc_result_t result;
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isc_buffer_t *b;
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result = isc_test_begin(NULL, ISC_TRUE);
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ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
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b = NULL;
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result = isc_buffer_allocate(mctx, &b, 1024);
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ATF_CHECK_EQ(result, ISC_R_SUCCESS);
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ATF_CHECK_EQ(b->length, 1024);
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/*
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* 1024 bytes should already be available, so this call does
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* nothing.
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*/
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result = isc_buffer_reserve(&b, 1024);
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ATF_CHECK_EQ(result, ISC_R_SUCCESS);
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ATF_CHECK(ISC_BUFFER_VALID(b));
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ATF_CHECK_EQ(b->length, 1024);
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/*
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* This call should grow it to 2048 bytes as only 1024 bytes are
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* available in the buffer.
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*/
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result = isc_buffer_reserve(&b, 1025);
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ATF_CHECK_EQ(result, ISC_R_SUCCESS);
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ATF_CHECK(ISC_BUFFER_VALID(b));
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ATF_CHECK_EQ(b->length, 2048);
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/*
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* 2048 bytes should already be available, so this call does
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* nothing.
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*/
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result = isc_buffer_reserve(&b, 2048);
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ATF_CHECK_EQ(result, ISC_R_SUCCESS);
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ATF_CHECK(ISC_BUFFER_VALID(b));
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ATF_CHECK_EQ(b->length, 2048);
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/*
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* This call should grow it to 4096 bytes as only 2048 bytes are
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* available in the buffer.
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*/
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result = isc_buffer_reserve(&b, 2049);
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ATF_CHECK_EQ(result, ISC_R_SUCCESS);
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ATF_CHECK(ISC_BUFFER_VALID(b));
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ATF_CHECK_EQ(b->length, 4096);
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/* Consume some of the buffer so we can run the next test. */
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isc_buffer_add(b, 4096);
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/*
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* This call should fail and leave buffer untouched.
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*/
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result = isc_buffer_reserve(&b, UINT_MAX);
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ATF_CHECK_EQ(result, ISC_R_NOMEMORY);
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ATF_CHECK(ISC_BUFFER_VALID(b));
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ATF_CHECK_EQ(b->length, 4096);
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isc_buffer_free(&b);
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isc_test_end();
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}
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ATF_TC(isc_buffer_reallocate);
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ATF_TC_HEAD(isc_buffer_reallocate, tc) {
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atf_tc_set_md_var(tc, "descr", "reallocate dynamic buffers");
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}
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ATF_TC_BODY(isc_buffer_reallocate, tc) {
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isc_result_t result;
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isc_buffer_t *b;
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result = isc_test_begin(NULL, ISC_TRUE);
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ATF_REQUIRE_EQ(result, ISC_R_SUCCESS);
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b = NULL;
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result = isc_buffer_allocate(mctx, &b, 1024);
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ATF_CHECK_EQ(result, ISC_R_SUCCESS);
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ATF_CHECK_EQ(b->length, 1024);
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result = isc_buffer_reallocate(&b, 512);
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ATF_CHECK_EQ(result, ISC_R_NOSPACE);
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ATF_CHECK(ISC_BUFFER_VALID(b));
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ATF_CHECK_EQ(b->length, 1024);
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result = isc_buffer_reallocate(&b, 1536);
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ATF_CHECK_EQ(result, ISC_R_SUCCESS);
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ATF_CHECK(ISC_BUFFER_VALID(b));
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ATF_CHECK_EQ(b->length, 1536);
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isc_buffer_free(&b);
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isc_test_end();
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}
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/*
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* Main
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*/
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ATF_TP_ADD_TCS(tp) {
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ATF_TP_ADD_TC(tp, isc_buffer_reserve);
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ATF_TP_ADD_TC(tp, isc_buffer_reallocate);
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return (atf_no_error());
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}
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