Mercurial > hg > nginx-quic
annotate src/event/quic/ngx_event_quic_tokens.c @ 8502:2029a30863e2 quic
QUIC: using compile time block/iv length for tokens.
Reference values can be found in RFC 3602, 2.1, 2.4.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Wed, 16 Jun 2021 18:03:33 +0300 |
parents | 4117aa7fa38e |
children | 75daac63f798 |
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1 |
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2 /* |
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3 * Copyright (C) Nginx, Inc. |
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4 */ |
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5 |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_event.h> |
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10 #include <ngx_sha1.h> |
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11 #include <ngx_event_quic_connection.h> |
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12 |
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13 |
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14 #define NGX_QUIC_MAX_TOKEN_SIZE 64 |
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15 /* SHA-1(addr)=20 + sizeof(time_t) + retry(1) + odcid.len(1) + odcid */ |
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16 |
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17 /* RFC 3602, 2.1 and 2.4 for AES-CBC block size and IV length */ |
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18 #define NGX_QUIC_AES_256_CBC_IV_LEN 16 |
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19 #define NGX_QUIC_AES_256_CBC_BLOCK_SIZE 16 |
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20 |
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21 |
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22 static void ngx_quic_address_hash(struct sockaddr *sockaddr, socklen_t socklen, |
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23 ngx_uint_t no_port, u_char buf[20]); |
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24 |
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25 |
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26 ngx_int_t |
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27 ngx_quic_new_sr_token(ngx_connection_t *c, ngx_str_t *cid, u_char *secret, |
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28 u_char *token) |
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29 { |
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30 ngx_str_t tmp; |
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31 |
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32 tmp.data = secret; |
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33 tmp.len = NGX_QUIC_SR_KEY_LEN; |
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34 |
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35 if (ngx_quic_derive_key(c->log, "sr_token_key", &tmp, cid, token, |
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36 NGX_QUIC_SR_TOKEN_LEN) |
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37 != NGX_OK) |
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38 { |
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39 return NGX_ERROR; |
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40 } |
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41 |
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42 #if (NGX_DEBUG) |
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43 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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44 "quic stateless reset token %*xs", |
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45 (size_t) NGX_QUIC_SR_TOKEN_LEN, token); |
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46 #endif |
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47 |
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48 return NGX_OK; |
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49 } |
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50 |
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51 |
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52 ngx_int_t |
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53 ngx_quic_new_token(ngx_connection_t *c, struct sockaddr *sockaddr, |
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54 socklen_t socklen, u_char *key, ngx_str_t *token, ngx_str_t *odcid, |
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55 time_t exp, ngx_uint_t is_retry) |
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56 { |
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57 int len, iv_len; |
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58 u_char *p, *iv; |
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59 EVP_CIPHER_CTX *ctx; |
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60 const EVP_CIPHER *cipher; |
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61 |
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62 u_char in[NGX_QUIC_MAX_TOKEN_SIZE]; |
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63 |
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64 ngx_quic_address_hash(sockaddr, socklen, !is_retry, in); |
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65 |
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66 p = in + 20; |
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67 |
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68 p = ngx_cpymem(p, &exp, sizeof(time_t)); |
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69 |
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70 *p++ = is_retry ? 1 : 0; |
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71 |
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72 if (odcid) { |
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73 *p++ = odcid->len; |
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74 p = ngx_cpymem(p, odcid->data, odcid->len); |
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75 |
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76 } else { |
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77 *p++ = 0; |
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78 } |
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79 |
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80 len = p - in; |
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81 |
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82 cipher = EVP_aes_256_cbc(); |
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83 iv_len = NGX_QUIC_AES_256_CBC_IV_LEN; |
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84 |
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85 token->len = iv_len + len + NGX_QUIC_AES_256_CBC_BLOCK_SIZE; |
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86 token->data = ngx_pnalloc(c->pool, token->len); |
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87 if (token->data == NULL) { |
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88 return NGX_ERROR; |
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89 } |
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90 |
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91 ctx = EVP_CIPHER_CTX_new(); |
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92 if (ctx == NULL) { |
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93 return NGX_ERROR; |
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94 } |
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95 |
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96 iv = token->data; |
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97 |
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98 if (RAND_bytes(iv, iv_len) <= 0 |
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99 || !EVP_EncryptInit_ex(ctx, cipher, NULL, key, iv)) |
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100 { |
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101 EVP_CIPHER_CTX_free(ctx); |
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102 return NGX_ERROR; |
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103 } |
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104 |
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105 token->len = iv_len; |
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106 |
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107 if (EVP_EncryptUpdate(ctx, token->data + token->len, &len, in, len) != 1) { |
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108 EVP_CIPHER_CTX_free(ctx); |
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109 return NGX_ERROR; |
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110 } |
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111 |
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112 token->len += len; |
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113 |
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114 if (EVP_EncryptFinal_ex(ctx, token->data + token->len, &len) <= 0) { |
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115 EVP_CIPHER_CTX_free(ctx); |
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116 return NGX_ERROR; |
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117 } |
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118 |
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119 token->len += len; |
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120 |
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121 EVP_CIPHER_CTX_free(ctx); |
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122 |
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123 #ifdef NGX_QUIC_DEBUG_PACKETS |
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124 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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125 "quic new token len:%uz %xV", token->len, token); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
126 #endif |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
127 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
128 return NGX_OK; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
129 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
130 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
131 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
132 static void |
8423
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8415
diff
changeset
|
133 ngx_quic_address_hash(struct sockaddr *sockaddr, socklen_t socklen, |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8415
diff
changeset
|
134 ngx_uint_t no_port, u_char buf[20]) |
8412
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
135 { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
136 size_t len; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
137 u_char *data; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
138 ngx_sha1_t sha1; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
139 struct sockaddr_in *sin; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
140 #if (NGX_HAVE_INET6) |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
141 struct sockaddr_in6 *sin6; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
142 #endif |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
143 |
8423
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8415
diff
changeset
|
144 len = (size_t) socklen; |
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8415
diff
changeset
|
145 data = (u_char *) sockaddr; |
8412
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
146 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
147 if (no_port) { |
8423
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8415
diff
changeset
|
148 switch (sockaddr->sa_family) { |
8412
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
149 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
150 #if (NGX_HAVE_INET6) |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
151 case AF_INET6: |
8423
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8415
diff
changeset
|
152 sin6 = (struct sockaddr_in6 *) sockaddr; |
8412
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
153 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
154 len = sizeof(struct in6_addr); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
155 data = sin6->sin6_addr.s6_addr; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
156 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
157 break; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
158 #endif |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
159 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
160 case AF_INET: |
8423
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8415
diff
changeset
|
161 sin = (struct sockaddr_in *) sockaddr; |
8412
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
162 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
163 len = sizeof(in_addr_t); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
164 data = (u_char *) &sin->sin_addr; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
165 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
166 break; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
167 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
168 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
169 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
170 ngx_sha1_init(&sha1); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
171 ngx_sha1_update(&sha1, data, len); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
172 ngx_sha1_final(buf, &sha1); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
173 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
174 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
175 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
176 ngx_int_t |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
177 ngx_quic_validate_token(ngx_connection_t *c, u_char *key, |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
178 ngx_quic_header_t *pkt) |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
179 { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
180 int len, tlen, iv_len; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
181 u_char *iv, *p; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
182 time_t now, exp; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
183 size_t total; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
184 ngx_str_t odcid; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
185 EVP_CIPHER_CTX *ctx; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
186 const EVP_CIPHER *cipher; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
187 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
188 u_char addr_hash[20]; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
189 u_char tdec[NGX_QUIC_MAX_TOKEN_SIZE]; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
190 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
191 /* Retry token or NEW_TOKEN in a previous connection */ |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
192 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
193 cipher = EVP_aes_256_cbc(); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
194 iv = pkt->token.data; |
8502
2029a30863e2
QUIC: using compile time block/iv length for tokens.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8423
diff
changeset
|
195 iv_len = NGX_QUIC_AES_256_CBC_IV_LEN; |
8412
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
196 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
197 /* sanity checks */ |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
198 |
8502
2029a30863e2
QUIC: using compile time block/iv length for tokens.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8423
diff
changeset
|
199 if (pkt->token.len < (size_t) iv_len + NGX_QUIC_AES_256_CBC_BLOCK_SIZE) { |
8412
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
200 goto garbage; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
201 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
202 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
203 if (pkt->token.len > (size_t) iv_len + NGX_QUIC_MAX_TOKEN_SIZE) { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
204 goto garbage; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
205 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
206 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
207 ctx = EVP_CIPHER_CTX_new(); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
208 if (ctx == NULL) { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
209 return NGX_ERROR; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
210 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
211 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
212 if (!EVP_DecryptInit_ex(ctx, cipher, NULL, key, iv)) { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
213 EVP_CIPHER_CTX_free(ctx); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
214 return NGX_ERROR; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
215 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
216 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
217 p = pkt->token.data + iv_len; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
218 len = pkt->token.len - iv_len; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
219 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
220 if (EVP_DecryptUpdate(ctx, tdec, &len, p, len) != 1) { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
221 EVP_CIPHER_CTX_free(ctx); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
222 goto garbage; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
223 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
224 total = len; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
225 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
226 if (EVP_DecryptFinal_ex(ctx, tdec + len, &tlen) <= 0) { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
227 EVP_CIPHER_CTX_free(ctx); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
228 goto garbage; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
229 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
230 total += tlen; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
231 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
232 EVP_CIPHER_CTX_free(ctx); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
233 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
234 if (total < (20 + sizeof(time_t) + 2)) { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
235 goto garbage; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
236 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
237 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
238 p = tdec + 20; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
239 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
240 ngx_memcpy(&exp, p, sizeof(time_t)); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
241 p += sizeof(time_t); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
242 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
243 pkt->retried = (*p++ == 1); |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
244 |
8423
4117aa7fa38e
QUIC: connection migration.
Vladimir Homutov <vl@nginx.com>
parents:
8415
diff
changeset
|
245 ngx_quic_address_hash(c->sockaddr, c->socklen, !pkt->retried, addr_hash); |
8412
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
246 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
247 if (ngx_memcmp(tdec, addr_hash, 20) != 0) { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
248 goto bad_token; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
249 } |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
250 |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
251 odcid.len = *p++; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
252 if (odcid.len) { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
253 if (odcid.len > NGX_QUIC_MAX_CID_LEN) { |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
254 goto bad_token; |
e19723c40d28
QUIC: separate files for tokens related processing.
Vladimir Homutov <vl@nginx.com>
parents:
diff
changeset
|
255 } |
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256 |
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257 if ((size_t)(tdec + total - p) < odcid.len) { |
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258 goto bad_token; |
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259 } |
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260 |
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261 odcid.data = p; |
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262 p += odcid.len; |
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263 } |
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264 |
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265 now = ngx_time(); |
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266 |
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267 if (now > exp) { |
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268 ngx_log_error(NGX_LOG_INFO, c->log, 0, "quic expired token"); |
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269 return NGX_DECLINED; |
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270 } |
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271 |
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272 if (odcid.len) { |
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273 pkt->odcid.len = odcid.len; |
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274 pkt->odcid.data = ngx_pstrdup(c->pool, &odcid); |
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275 if (pkt->odcid.data == NULL) { |
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276 return NGX_ERROR; |
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277 } |
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278 |
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279 } else { |
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280 pkt->odcid = pkt->dcid; |
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281 } |
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282 |
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283 pkt->validated = 1; |
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284 |
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285 return NGX_OK; |
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286 |
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287 garbage: |
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288 |
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289 ngx_log_error(NGX_LOG_INFO, c->log, 0, "quic garbage token"); |
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290 |
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291 return NGX_ABORT; |
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292 |
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293 bad_token: |
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294 |
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295 ngx_log_error(NGX_LOG_INFO, c->log, 0, "quic invalid token"); |
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296 |
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297 return NGX_DECLINED; |
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298 } |