mirror of
https://github.com/curl/curl.git
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255aac56f9
Move curlx_ functions into its own subdir. The idea is to use the curlx_ prefix proper on these functions, and use these same function names both in tool, lib and test suite source code. Stop the previous special #define setup for curlx_ names. The printf defines are now done for the library alone. Tests no longer use the printf defines. The tool code sets its own defines. The printf functions are not curlx, they are publicly available. The strcase defines are not curlx_ functions and should not be used by tool or server code. dynbuf, warnless, base64, strparse, timeval, timediff are now proper curlx functions. When libcurl is built statically, the functions from the library can be used as-is. The key is then that the functions must work as-is, without having to be recompiled for use in tool/tests. This avoids symbol collisions - when libcurl is built statically, we use those functions directly when building the tool/tests. When libcurl is shared, we build/link them separately for the tool/tests. Assisted-by: Jay Satiro Closes #17253
298 lines
9.6 KiB
C
298 lines
9.6 KiB
C
/***************************************************************************
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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) 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.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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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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#include "curlcheck.h"
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#include "doh.h"
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#include "dynbuf.h"
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static CURLcode unit_setup(void)
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{
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return CURLE_OK;
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}
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static void unit_stop(void)
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{
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}
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#ifndef CURL_DISABLE_DOH
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#define DNS_PREAMBLE "\x00\x00\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00"
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#define LABEL_TEST "\x04\x74\x65\x73\x74"
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#define LABEL_HOST "\x04\x68\x6f\x73\x74"
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#define LABEL_NAME "\x04\x6e\x61\x6d\x65"
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#define DNSA_TYPE "\x01"
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#define DNSAAAA_TYPE "\x1c"
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#define DNSA_EPILOGUE "\x00\x00" DNSA_TYPE "\x00\x01"
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#define DNSAAAA_EPILOGUE "\x00\x00" DNSAAAA_TYPE "\x00\x01"
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#define DNS_Q1 DNS_PREAMBLE LABEL_TEST LABEL_HOST LABEL_NAME DNSA_EPILOGUE
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#define DNS_Q2 DNS_PREAMBLE LABEL_TEST LABEL_HOST LABEL_NAME DNSAAAA_EPILOGUE
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struct dohrequest {
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/* input */
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const char *name;
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DNStype type;
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/* output */
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const char *packet;
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size_t size;
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DOHcode rc;
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};
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static const struct dohrequest req[] = {
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{"test.host.name", DNS_TYPE_A, DNS_Q1, sizeof(DNS_Q1)-1, DOH_OK },
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{"test.host.name", DNS_TYPE_AAAA, DNS_Q2, sizeof(DNS_Q2)-1, DOH_OK },
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{"zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
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".host.name",
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DNS_TYPE_AAAA, NULL, 0, DOH_DNS_BAD_LABEL }
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};
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struct dohresp {
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/* input */
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const char *packet;
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size_t size;
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DNStype type;
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/* output */
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DOHcode rc;
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const char *out;
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};
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#define DNS_FOO_EXAMPLE_COM \
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"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x00\x00\x00\x03\x66\x6f\x6f" \
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"\x07\x65\x78\x61\x6d\x70\x6c\x65\x03\x63\x6f\x6d\x00\x00\x01\x00" \
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"\x01\xc0\x0c\x00\x01\x00\x01\x00\x00\x00\x37\x00\x04\x7f\x00\x00" \
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"\x01"
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static const char full49[] = DNS_FOO_EXAMPLE_COM;
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static const struct dohresp resp[] = {
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{"\x00\x00", 2, DNS_TYPE_A, DOH_TOO_SMALL_BUFFER, NULL },
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{"\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01", 12,
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DNS_TYPE_A, DOH_DNS_BAD_ID, NULL },
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{"\x00\x00\x00\x01\x00\x01\x00\x01\x00\x01\x00\x01", 12,
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DNS_TYPE_A, DOH_DNS_BAD_RCODE, NULL },
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{"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x00\x00\x00\x03\x66\x6f\x6f", 16,
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DNS_TYPE_A, DOH_DNS_OUT_OF_RANGE, NULL },
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{"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x00\x00\x00\x03\x66\x6f\x6f\x00", 17,
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DNS_TYPE_A, DOH_DNS_OUT_OF_RANGE, NULL },
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{"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x00\x00\x00\x03\x66\x6f\x6f\x00"
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"\x00\x01\x00\x01", 21,
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DNS_TYPE_A, DOH_DNS_OUT_OF_RANGE, NULL },
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{"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x00\x00\x00\x03\x66\x6f\x6f\x00"
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"\x00\x01\x00\x01"
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"\x04", 18,
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DNS_TYPE_A, DOH_DNS_OUT_OF_RANGE, NULL },
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{"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x00\x00\x00\x04\x63\x75\x72"
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"\x6c\x04\x63\x75\x72\x6c\x00\x00\x05\x00\x01\xc0\x0c\x00\x05\x00"
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"\x01\x00\x00\x00\x37\x00\x11\x08\x61\x6e\x79\x77\x68\x65\x72\x65"
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"\x06\x72\x65\x61\x6c\x6c\x79\x00", 56,
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DNS_TYPE_A, DOH_OK, "anywhere.really "},
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{DNS_FOO_EXAMPLE_COM, 49, DNS_TYPE_A, DOH_OK, "127.0.0.1 "},
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{"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x00\x00\x00\x04\x61\x61\x61"
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"\x61\x07\x65\x78\x61\x6d\x70\x6c\x65\x03\x63\x6f\x6d\x00\x00\x1c"
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"\x00\x01\xc0\x0c\x00\x1c\x00\x01\x00\x00\x00\x37\x00\x10\x20\x20"
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"\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x20", 62,
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DNS_TYPE_AAAA, DOH_OK,
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"2020:2020:0000:0000:0000:0000:0000:2020 " },
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{"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x00\x00\x00\x04\x63\x75\x72"
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"\x6c\x04\x63\x75\x72\x6c\x00\x00\x05\x00\x01\xc0\x0c\x00\x05\x00"
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"\x01\x00\x00\x00\x37\x00"
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"\x07\x03\x61\x6e\x79\xc0\x27\x00", 46,
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DNS_TYPE_A, DOH_DNS_LABEL_LOOP, NULL},
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/* packet with NSCOUNT == 1 */
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{"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x01\x00\x00\x04\x61\x61\x61"
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"\x61\x07\x65\x78\x61\x6d\x70\x6c\x65\x03\x63\x6f\x6d\x00\x00\x1c"
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"\x00\x01\xc0\x0c\x00\x1c\x00\x01\x00\x00\x00\x37\x00\x10\x20\x20"
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"\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x20"
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LABEL_TEST LABEL_HOST LABEL_NAME DNSAAAA_EPILOGUE "\x00\x00\x00\x01"
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"\00\x04\x01\x01\x01\x01", /* RDDATA */
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62 + 30,
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DNS_TYPE_AAAA, DOH_OK,
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"2020:2020:0000:0000:0000:0000:0000:2020 " },
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/* packet with ARCOUNT == 1 */
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{"\x00\x00\x01\x00\x00\x01\x00\x01\x00\x00\x00\x01\x04\x61\x61\x61"
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"\x61\x07\x65\x78\x61\x6d\x70\x6c\x65\x03\x63\x6f\x6d\x00\x00\x1c"
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"\x00\x01\xc0\x0c\x00\x1c\x00\x01\x00\x00\x00\x37\x00\x10\x20\x20"
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"\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x20"
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LABEL_TEST LABEL_HOST LABEL_NAME DNSAAAA_EPILOGUE "\x00\x00\x00\x01"
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"\00\x04\x01\x01\x01\x01", /* RDDATA */
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62 + 30,
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DNS_TYPE_AAAA, DOH_OK,
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"2020:2020:0000:0000:0000:0000:0000:2020 " },
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};
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UNITTEST_START
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{
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size_t size = 0;
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unsigned char buffer[256];
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size_t i;
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unsigned char *p;
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for(i = 0; i < CURL_ARRAYSIZE(req); i++) {
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DOHcode rc = doh_req_encode(req[i].name, req[i].type,
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buffer, sizeof(buffer), &size);
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if(rc != req[i].rc) {
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curl_mfprintf(stderr, "req %zu: Expected return code %d got %d\n", i,
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req[i].rc, rc);
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abort_if(rc != req[i].rc, "return code");
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}
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if(size != req[i].size) {
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curl_mfprintf(stderr, "req %zu: Expected size %zu got %zu\n", i,
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req[i].size, size);
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curl_mfprintf(stderr, "DNS encode made: %s\n", hexdump(buffer, size));
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abort_if(size != req[i].size, "size");
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}
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if(req[i].packet && memcmp(req[i].packet, buffer, size)) {
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curl_mfprintf(stderr, "DNS encode made: %s\n", hexdump(buffer, size));
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curl_mfprintf(stderr, "... instead of: %s\n",
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hexdump((const unsigned char *)req[i].packet, size));
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abort_if(req[i].packet && memcmp(req[i].packet, buffer, size),
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"contents");
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}
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}
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for(i = 0; i < CURL_ARRAYSIZE(resp); i++) {
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struct dohentry d;
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DOHcode rc;
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char *ptr;
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size_t len;
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int u;
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de_init(&d);
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rc = doh_resp_decode((const unsigned char *)resp[i].packet, resp[i].size,
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resp[i].type, &d);
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if(rc != resp[i].rc) {
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curl_mfprintf(stderr, "resp %zu: Expected return code %d got %d\n", i,
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resp[i].rc, rc);
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abort_if(rc != resp[i].rc, "return code");
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}
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len = sizeof(buffer);
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ptr = (char *)buffer;
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for(u = 0; u < d.numaddr; u++) {
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size_t o;
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struct dohaddr *a;
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a = &d.addr[u];
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if(resp[i].type == DNS_TYPE_A) {
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p = &a->ip.v4[0];
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curl_msnprintf(ptr, len, "%u.%u.%u.%u ", p[0], p[1], p[2], p[3]);
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o = strlen(ptr);
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len -= o;
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ptr += o;
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}
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else {
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int j;
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for(j = 0; j < 16; j += 2) {
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size_t l;
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curl_msnprintf(ptr, len, "%s%02x%02x", j?":":"", a->ip.v6[j],
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a->ip.v6[j + 1]);
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l = strlen(ptr);
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len -= l;
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ptr += l;
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}
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curl_msnprintf(ptr, len, " ");
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len--;
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ptr++;
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}
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}
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for(u = 0; u < d.numcname; u++) {
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size_t o;
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curl_msnprintf(ptr, len, "%s ", curlx_dyn_ptr(&d.cname[u]));
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o = strlen(ptr);
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len -= o;
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ptr += o;
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}
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de_cleanup(&d);
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if(resp[i].out && strcmp((char *)buffer, resp[i].out)) {
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curl_mfprintf(stderr, "resp %zu: Expected %s got %s\n", i,
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resp[i].out, buffer);
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abort_if(resp[i].out && strcmp((char *)buffer, resp[i].out), "content");
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}
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}
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/* pass all sizes into the decoder until full */
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for(i = 0; i < sizeof(full49)-1; i++) {
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struct dohentry d;
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DOHcode rc;
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memset(&d, 0, sizeof(d));
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rc = doh_resp_decode((const unsigned char *)full49, i, DNS_TYPE_A, &d);
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if(!rc) {
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/* none of them should work */
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curl_mfprintf(stderr, "%zu: %d\n", i, rc);
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abort_if(!rc, "error rc");
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}
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}
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/* and try all pieces from the other end of the packet */
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for(i = 1; i < sizeof(full49); i++) {
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struct dohentry d;
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DOHcode rc;
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memset(&d, 0, sizeof(d));
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rc = doh_resp_decode((const unsigned char *)&full49[i], sizeof(full49)-i-1,
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DNS_TYPE_A, &d);
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if(!rc) {
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/* none of them should work */
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curl_mfprintf(stderr, "2 %zu: %d\n", i, rc);
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abort_if(!rc, "error rc");
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}
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}
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{
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DOHcode rc;
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struct dohentry d;
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struct dohaddr *a;
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memset(&d, 0, sizeof(d));
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rc = doh_resp_decode((const unsigned char *)full49, sizeof(full49)-1,
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DNS_TYPE_A, &d);
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fail_if(d.numaddr != 1, "missing address");
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a = &d.addr[0];
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p = &a->ip.v4[0];
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curl_msnprintf((char *)buffer, sizeof(buffer),
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"%u.%u.%u.%u", p[0], p[1], p[2], p[3]);
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if(rc || strcmp((char *)buffer, "127.0.0.1")) {
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curl_mfprintf(stderr, "bad address decoded: %s, rc == %d\n", buffer, rc);
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abort_if(rc || strcmp((char *)buffer, "127.0.0.1"), "bad address");
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}
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fail_if(d.numcname, "bad cname counter");
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}
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}
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UNITTEST_STOP
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#else /* CURL_DISABLE_DOH */
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UNITTEST_START
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/* nothing to do, just succeed */
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UNITTEST_STOP
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#endif
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