| 1 | /*
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| 2 | * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | * Copyright Siemens AG 2020
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| 4 | *
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| 5 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 6 | * this file except in compliance with the License. You can obtain a copy
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| 7 | * in the file LICENSE in the source distribution or at
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| 8 | * https://www.openssl.org/source/license.html
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| 9 | */
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| 10 |
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| 11 | #include <openssl/http.h>
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| 12 | #include <openssl/pem.h>
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| 13 | #include <openssl/x509v3.h>
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| 14 | #include <string.h>
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| 15 |
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| 16 | #include "testutil.h"
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| 17 |
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| 18 | static const ASN1_ITEM *x509_it = NULL;
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| 19 | static X509 *x509 = NULL;
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| 20 | #define RPATH "/path/result.crt"
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| 21 |
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| 22 | typedef struct {
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| 23 | BIO *out;
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| 24 | char version;
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| 25 | int keep_alive;
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| 26 | } server_args;
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| 27 |
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| 28 | /*-
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| 29 | * Pretty trivial HTTP mock server:
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| 30 | * For POST, copy request headers+body from mem BIO 'in' as response to 'out'.
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| 31 | * For GET, redirect to RPATH, else respond with 'rsp' of ASN1 type 'it'.
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| 32 | * Respond with HTTP version 1.'version' and 'keep_alive' (unless implicit).
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| 33 | */
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| 34 | static int mock_http_server(BIO *in, BIO *out, char version, int keep_alive,
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| 35 | ASN1_VALUE *rsp, const ASN1_ITEM *it)
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| 36 | {
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| 37 | const char *req, *path;
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| 38 | long count = BIO_get_mem_data(in, (unsigned char **)&req);
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| 39 | const char *hdr = (char *)req;
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| 40 | int is_get = count >= 4 && strncmp(hdr, "GET ", 4) == 0;
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| 41 | int len;
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| 42 |
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| 43 | /* first line should contain "<GET or POST> <path> HTTP/1.x" */
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| 44 | if (is_get)
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| 45 | hdr += 4;
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| 46 | else if (TEST_true(count >= 5 && strncmp(hdr, "POST ", 5) == 0))
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| 47 | hdr += 5;
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| 48 | else
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| 49 | return 0;
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| 50 |
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| 51 | path = hdr;
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| 52 | hdr = strchr(hdr, ' ');
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| 53 | if (hdr == NULL)
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| 54 | return 0;
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| 55 | len = strlen("HTTP/1.");
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| 56 | if (!TEST_strn_eq(++hdr, "HTTP/1.", len))
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| 57 | return 0;
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| 58 | hdr += len;
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| 59 | /* check for HTTP version 1.0 .. 1.1 */
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| 60 | if (!TEST_char_le('0', *hdr) || !TEST_char_le(*hdr++, '1'))
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| 61 | return 0;
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| 62 | if (!TEST_char_eq(*hdr++, '\r') || !TEST_char_eq(*hdr++, '\n'))
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| 63 | return 0;
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| 64 | count -= (hdr - req);
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| 65 | if (count < 0 || out == NULL)
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| 66 | return 0;
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| 67 |
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| 68 | if (strncmp(path, RPATH, strlen(RPATH)) != 0) {
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| 69 | if (!is_get)
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| 70 | return 0;
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| 71 | return BIO_printf(out, "HTTP/1.%c 301 Moved Permanently\r\n"
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| 72 | "Location: %s\r\n\r\n",
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| 73 | version, RPATH) > 0; /* same server */
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| 74 | }
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| 75 | if (BIO_printf(out, "HTTP/1.%c 200 OK\r\n", version) <= 0)
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| 76 | return 0;
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| 77 | if ((version == '0') == keep_alive) /* otherwise, default */
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| 78 | if (BIO_printf(out, "Connection: %s\r\n",
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| 79 | version == '0' ? "keep-alive" : "close") <= 0)
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| 80 | return 0;
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| 81 | if (is_get) { /* construct new header and body */
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| 82 | if ((len = ASN1_item_i2d(rsp, NULL, it)) <= 0)
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| 83 | return 0;
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| 84 | if (BIO_printf(out, "Content-Type: application/x-x509-ca-cert\r\n"
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| 85 | "Content-Length: %d\r\n\r\n", len) <= 0)
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| 86 | return 0;
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| 87 | return ASN1_item_i2d_bio(it, out, rsp);
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| 88 | } else {
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| 89 | len = strlen("Connection: ");
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| 90 | if (strncmp(hdr, "Connection: ", len) == 0) {
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| 91 | /* skip req Connection header */
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| 92 | hdr = strstr(hdr + len, "\r\n");
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| 93 | if (hdr == NULL)
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| 94 | return 0;
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| 95 | hdr += 2;
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| 96 | }
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| 97 | /* echo remaining request header and body */
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| 98 | return BIO_write(out, hdr, count) == count;
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| 99 | }
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| 100 | }
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| 101 |
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| 102 | static long http_bio_cb_ex(BIO *bio, int oper, const char *argp, size_t len,
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| 103 | int cmd, long argl, int ret, size_t *processed)
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| 104 | {
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| 105 | server_args *args = (server_args *)BIO_get_callback_arg(bio);
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| 106 |
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| 107 | if (oper == (BIO_CB_CTRL | BIO_CB_RETURN) && cmd == BIO_CTRL_FLUSH)
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| 108 | ret = mock_http_server(bio, args->out, args->version, args->keep_alive,
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| 109 | (ASN1_VALUE *)x509, x509_it);
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| 110 | return ret;
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| 111 | }
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| 112 |
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| 113 | static int test_http_x509(int do_get)
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| 114 | {
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| 115 | X509 *rcert = NULL;
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| 116 | BIO *wbio = BIO_new(BIO_s_mem());
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| 117 | BIO *rbio = BIO_new(BIO_s_mem());
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| 118 | server_args mock_args = { NULL, '0', 0 };
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| 119 | BIO *rsp, *req = ASN1_item_i2d_mem_bio(x509_it, (ASN1_VALUE *)x509);
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| 120 | STACK_OF(CONF_VALUE) *headers = NULL;
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| 121 | const char content_type[] = "application/x-x509-ca-cert";
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| 122 | int res = 0;
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| 123 |
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| 124 | if (wbio == NULL || rbio == NULL || req == NULL)
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| 125 | goto err;
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| 126 | mock_args.out = rbio;
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| 127 | BIO_set_callback_ex(wbio, http_bio_cb_ex);
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| 128 | BIO_set_callback_arg(wbio, (char *)&mock_args);
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| 129 |
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| 130 | rsp = do_get ?
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| 131 | OSSL_HTTP_get("/will-be-redirected",
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| 132 | NULL /* proxy */, NULL /* no_proxy */,
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| 133 | wbio, rbio, NULL /* bio_update_fn */, NULL /* arg */,
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| 134 | 0 /* buf_size */, headers, content_type,
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| 135 | 1 /* expect_asn1 */,
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| 136 | OSSL_HTTP_DEFAULT_MAX_RESP_LEN, 0 /* timeout */)
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| 137 | : OSSL_HTTP_transfer(NULL, NULL /* host */, NULL /* port */, RPATH,
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| 138 | 0 /* use_ssl */,NULL /* proxy */, NULL /* no_pr */,
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| 139 | wbio, rbio, NULL /* bio_fn */, NULL /* arg */,
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| 140 | 0 /* buf_size */, headers, content_type,
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| 141 | req, content_type, 1 /* expect_asn1 */,
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| 142 | OSSL_HTTP_DEFAULT_MAX_RESP_LEN, 0 /* timeout */,
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| 143 | 0 /* keep_alive */);
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| 144 | rcert = d2i_X509_bio(rsp, NULL);
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| 145 | BIO_free(rsp);
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| 146 | res = TEST_ptr(rcert) && TEST_int_eq(X509_cmp(x509, rcert), 0);
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| 147 |
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| 148 | err:
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| 149 | X509_free(rcert);
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| 150 | BIO_free(req);
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| 151 | BIO_free(wbio);
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| 152 | BIO_free(rbio);
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| 153 | sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
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| 154 | return res;
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| 155 | }
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| 156 |
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| 157 | static int test_http_keep_alive(char version, int keep_alive, int kept_alive)
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| 158 | {
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| 159 | BIO *wbio = BIO_new(BIO_s_mem());
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| 160 | BIO *rbio = BIO_new(BIO_s_mem());
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| 161 | BIO *rsp;
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| 162 | server_args mock_args = { NULL, '0', 0 };
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| 163 | const char *const content_type = "application/x-x509-ca-cert";
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| 164 | OSSL_HTTP_REQ_CTX *rctx = NULL;
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| 165 | int i, res = 0;
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| 166 |
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| 167 | if (wbio == NULL || rbio == NULL)
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| 168 | goto err;
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| 169 | mock_args.out = rbio;
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| 170 | mock_args.version = version;
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| 171 | mock_args.keep_alive = kept_alive;
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| 172 | BIO_set_callback_ex(wbio, http_bio_cb_ex);
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| 173 | BIO_set_callback_arg(wbio, (char *)&mock_args);
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| 174 |
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| 175 | for (res = 1, i = 1; res && i <= 2; i++) {
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| 176 | rsp = OSSL_HTTP_transfer(&rctx, NULL /* server */, NULL /* port */,
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| 177 | RPATH, 0 /* use_ssl */,
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| 178 | NULL /* proxy */, NULL /* no_proxy */,
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| 179 | wbio, rbio, NULL /* bio_update_fn */, NULL,
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| 180 | 0 /* buf_size */, NULL /* headers */,
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| 181 | NULL /* content_type */, NULL /* req => GET */,
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| 182 | content_type, 0 /* ASN.1 not expected */,
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| 183 | 0 /* max_resp_len */, 0 /* timeout */,
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| 184 | keep_alive);
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| 185 | if (keep_alive == 2 && kept_alive == 0)
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| 186 | res = res && TEST_ptr_null(rsp)
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| 187 | && TEST_int_eq(OSSL_HTTP_is_alive(rctx), 0);
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| 188 | else
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| 189 | res = res && TEST_ptr(rsp)
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| 190 | && TEST_int_eq(OSSL_HTTP_is_alive(rctx), keep_alive > 0);
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| 191 | BIO_free(rsp);
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| 192 | (void)BIO_reset(rbio); /* discard response contents */
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| 193 | keep_alive = 0;
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| 194 | }
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| 195 | OSSL_HTTP_close(rctx, res);
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| 196 |
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| 197 | err:
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| 198 | BIO_free(wbio);
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| 199 | BIO_free(rbio);
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| 200 | return res;
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| 201 | }
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| 202 |
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| 203 | static int test_http_url_ok(const char *url, int exp_ssl, const char *exp_host,
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| 204 | const char *exp_port, const char *exp_path)
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| 205 | {
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| 206 | char *user, *host, *port, *path, *query, *frag;
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| 207 | int exp_num, num, ssl;
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| 208 | int res;
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| 209 |
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| 210 | if (!TEST_int_eq(sscanf(exp_port, "%d", &exp_num), 1))
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| 211 | return 0;
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| 212 | res = TEST_true(OSSL_HTTP_parse_url(url, &ssl, &user, &host, &port, &num,
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| 213 | &path, &query, &frag))
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| 214 | && TEST_str_eq(host, exp_host)
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| 215 | && TEST_str_eq(port, exp_port)
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| 216 | && TEST_int_eq(num, exp_num)
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| 217 | && TEST_str_eq(path, exp_path)
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| 218 | && TEST_int_eq(ssl, exp_ssl);
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| 219 | if (res && *user != '\0')
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| 220 | res = TEST_str_eq(user, "user:pass");
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| 221 | if (res && *frag != '\0')
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| 222 | res = TEST_str_eq(frag, "fr");
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| 223 | if (res && *query != '\0')
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| 224 | res = TEST_str_eq(query, "q");
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| 225 | OPENSSL_free(user);
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| 226 | OPENSSL_free(host);
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| 227 | OPENSSL_free(port);
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| 228 | OPENSSL_free(path);
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| 229 | OPENSSL_free(query);
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| 230 | OPENSSL_free(frag);
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| 231 | return res;
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| 232 | }
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| 233 |
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| 234 | static int test_http_url_path_query_ok(const char *url, const char *exp_path_qu)
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| 235 | {
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| 236 | char *host, *path;
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| 237 | int res;
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| 238 |
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| 239 | res = TEST_true(OSSL_HTTP_parse_url(url, NULL, NULL, &host, NULL, NULL,
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| 240 | &path, NULL, NULL))
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| 241 | && TEST_str_eq(host, "host")
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| 242 | && TEST_str_eq(path, exp_path_qu);
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| 243 | OPENSSL_free(host);
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| 244 | OPENSSL_free(path);
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| 245 | return res;
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| 246 | }
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| 247 |
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| 248 | static int test_http_url_dns(void)
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| 249 | {
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| 250 | return test_http_url_ok("host:65535/path", 0, "host", "65535", "/path");
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| 251 | }
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| 252 |
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| 253 | static int test_http_url_path_query(void)
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| 254 | {
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| 255 | return test_http_url_path_query_ok("http://usr@host:1/p?q=x#frag", "/p?q=x")
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| 256 | && test_http_url_path_query_ok("http://host?query#frag", "/?query")
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| 257 | && test_http_url_path_query_ok("http://host:9999#frag", "/");
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| 258 | }
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| 259 |
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| 260 | static int test_http_url_userinfo_query_fragment(void)
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| 261 | {
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| 262 | return test_http_url_ok("user:pass@host/p?q#fr", 0, "host", "80", "/p");
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| 263 | }
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| 264 |
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| 265 | static int test_http_url_ipv4(void)
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| 266 | {
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| 267 | return test_http_url_ok("https://1.2.3.4/p/q", 1, "1.2.3.4", "443", "/p/q");
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| 268 | }
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| 269 |
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| 270 | static int test_http_url_ipv6(void)
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| 271 | {
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| 272 | return test_http_url_ok("http://[FF01::101]:6", 0, "[FF01::101]", "6", "/");
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| 273 | }
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| 274 |
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| 275 | static int test_http_url_invalid(const char *url)
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| 276 | {
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| 277 | char *host = "1", *port = "1", *path = "1";
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| 278 | int num = 1, ssl = 1;
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| 279 | int res;
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| 280 |
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| 281 | res = TEST_false(OSSL_HTTP_parse_url(url, &ssl, NULL, &host, &port, &num,
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| 282 | &path, NULL, NULL))
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| 283 | && TEST_ptr_null(host)
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| 284 | && TEST_ptr_null(port)
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| 285 | && TEST_ptr_null(path);
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| 286 | if (!res) {
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| 287 | OPENSSL_free(host);
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| 288 | OPENSSL_free(port);
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| 289 | OPENSSL_free(path);
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| 290 | }
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| 291 | return res;
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| 292 | }
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| 293 |
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| 294 | static int test_http_url_invalid_prefix(void)
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| 295 | {
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| 296 | return test_http_url_invalid("htttps://1.2.3.4:65535/pkix");
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| 297 | }
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| 298 |
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| 299 | static int test_http_url_invalid_port(void)
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| 300 | {
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| 301 | return test_http_url_invalid("https://1.2.3.4:65536/pkix");
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| 302 | }
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| 303 |
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| 304 | static int test_http_url_invalid_path(void)
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| 305 | {
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| 306 | return test_http_url_invalid("https://[FF01::101]pkix");
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| 307 | }
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| 308 |
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| 309 | static int test_http_get_x509(void)
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| 310 | {
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| 311 | return test_http_x509(1);
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| 312 | }
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| 313 |
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| 314 | static int test_http_post_x509(void)
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| 315 | {
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| 316 | return test_http_x509(0);
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| 317 | }
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| 318 |
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| 319 | static int test_http_keep_alive_0_no_no(void)
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| 320 | {
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| 321 | return test_http_keep_alive('0', 0, 0);
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| 322 | }
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| 323 |
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| 324 | static int test_http_keep_alive_1_no_no(void)
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| 325 | {
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| 326 | return test_http_keep_alive('1', 0, 0);
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| 327 | }
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| 328 |
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| 329 | static int test_http_keep_alive_0_prefer_yes(void)
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| 330 | {
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| 331 | return test_http_keep_alive('0', 1, 1);
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| 332 | }
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| 333 |
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| 334 | static int test_http_keep_alive_1_prefer_yes(void)
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| 335 | {
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| 336 | return test_http_keep_alive('1', 1, 1);
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| 337 | }
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| 338 |
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| 339 | static int test_http_keep_alive_0_require_yes(void)
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| 340 | {
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| 341 | return test_http_keep_alive('0', 2, 1);
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| 342 | }
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| 343 |
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| 344 | static int test_http_keep_alive_1_require_yes(void)
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| 345 | {
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| 346 | return test_http_keep_alive('1', 2, 1);
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| 347 | }
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| 348 |
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| 349 | static int test_http_keep_alive_0_require_no(void)
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| 350 | {
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| 351 | return test_http_keep_alive('0', 2, 0);
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| 352 | }
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| 353 |
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| 354 | static int test_http_keep_alive_1_require_no(void)
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| 355 | {
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| 356 | return test_http_keep_alive('1', 2, 0);
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| 357 | }
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| 358 |
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| 359 | void cleanup_tests(void)
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| 360 | {
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| 361 | X509_free(x509);
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| 362 | }
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| 363 |
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| 364 | OPT_TEST_DECLARE_USAGE("cert.pem\n")
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| 365 |
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| 366 | int setup_tests(void)
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| 367 | {
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| 368 | if (!test_skip_common_options())
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| 369 | return 0;
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| 370 |
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| 371 | x509_it = ASN1_ITEM_rptr(X509);
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| 372 | if (!TEST_ptr((x509 = load_cert_pem(test_get_argument(0), NULL))))
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| 373 | return 0;
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| 374 |
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| 375 | ADD_TEST(test_http_url_dns);
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| 376 | ADD_TEST(test_http_url_path_query);
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| 377 | ADD_TEST(test_http_url_userinfo_query_fragment);
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| 378 | ADD_TEST(test_http_url_ipv4);
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| 379 | ADD_TEST(test_http_url_ipv6);
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| 380 | ADD_TEST(test_http_url_invalid_prefix);
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| 381 | ADD_TEST(test_http_url_invalid_port);
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| 382 | ADD_TEST(test_http_url_invalid_path);
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| 383 | ADD_TEST(test_http_get_x509);
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| 384 | ADD_TEST(test_http_post_x509);
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| 385 | ADD_TEST(test_http_keep_alive_0_no_no);
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| 386 | ADD_TEST(test_http_keep_alive_1_no_no);
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| 387 | ADD_TEST(test_http_keep_alive_0_prefer_yes);
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| 388 | ADD_TEST(test_http_keep_alive_1_prefer_yes);
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| 389 | ADD_TEST(test_http_keep_alive_0_require_yes);
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| 390 | ADD_TEST(test_http_keep_alive_1_require_yes);
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| 391 | ADD_TEST(test_http_keep_alive_0_require_no);
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| 392 | ADD_TEST(test_http_keep_alive_1_require_no);
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| 393 | return 1;
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| 394 | }
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