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annotate src/event/ngx_event_quic.h @ 8221:69345a26ba69 quic

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Split transport and crypto parts into separate files. New files: src/event/ngx_event_quic_protection.h src/event/ngx_event_quic_protection.c The protection.h header provides interface to the crypto part of the QUIC: 2 functions to initialize corresponding secrets: ngx_quic_set_initial_secret() ngx_quic_set_encryption_secret() and 2 functions to deal with packet processing: ngx_quic_encrypt() ngx_quic_decrypt() Also, structures representing secrets are defined there. All functions require SSL connection and a pool, only crypto operations inside, no access to nginx connections or events. Currently pool->log is used for the logging (instead of original c->log).
author Vladimir Homutov <vl@nginx.com>
date Mon, 16 Mar 2020 19:00:47 +0300
parents 38c0898b6df7
children 61f9b873e2e7
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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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7 #ifndef _NGX_EVENT_QUIC_H_INCLUDED_
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8 #define _NGX_EVENT_QUIC_H_INCLUDED_
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11 #include <ngx_event_openssl.h>
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13
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14 #define quic_version 0xff000018 /* draft-24 */
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15
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16 /* 17.2. Long Header Packets */
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17
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18 #define NGX_QUIC_PKT_LONG 0x80
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19
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20 #define NGX_QUIC_PKT_INITIAL 0xc0
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21 #define NGX_QUIC_PKT_HANDSHAKE 0xe0
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22
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23
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24 #if (NGX_HAVE_NONALIGNED)
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25
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26 #define ngx_quic_parse_uint16(p) ntohs(*(uint16_t *) (p))
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27 #define ngx_quic_parse_uint32(p) ntohl(*(uint32_t *) (p))
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28
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29 #define ngx_quic_write_uint16 ngx_quic_write_uint16_aligned
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30 #define ngx_quic_write_uint32 ngx_quic_write_uint32_aligned
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31
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32 #else
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33
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34 #define ngx_quic_parse_uint16(p) ((p)[0] << 8 | (p)[1])
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35 #define ngx_quic_parse_uint32(p) \
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36 ((uint32_t) (p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3])
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37
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38 #define ngx_quic_write_uint16(p, s) \
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39 ((p)[0] = (u_char) ((s) >> 8), \
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40 (p)[1] = (u_char) (s), \
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41 (p) + sizeof(uint16_t))
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42
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43 #define ngx_quic_write_uint32(p, s) \
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44 ((p)[0] = (u_char) ((s) >> 24), \
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45 (p)[1] = (u_char) ((s) >> 16), \
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46 (p)[2] = (u_char) ((s) >> 8), \
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47 (p)[3] = (u_char) (s), \
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48 (p) + sizeof(uint32_t))
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49
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50 #endif
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51
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52
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53 #define ngx_quic_write_uint16_aligned(p, s) \
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54 (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t))
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55
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56 #define ngx_quic_write_uint32_aligned(p, s) \
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57 (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t))
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58
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59 #define ngx_quic_varint_len(value) \
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60 ((value) <= 63 ? 1 \
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61 : ((uint32_t) value) <= 16383 ? 2 \
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62 : ((uint64_t) value) <= 1073741823 ? 4 \
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63 : 8)
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64
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65
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66 struct ngx_quic_stream_s {
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67 uint64_t id;
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68 ngx_uint_t unidirectional:1;
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69 ngx_connection_t *parent;
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70 void *data;
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71 };
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72
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73 typedef struct ngx_quic_secret_s ngx_quic_secret_t;
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74 typedef enum ssl_encryption_level_t ngx_quic_level_t;
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75
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76 typedef struct {
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77 ngx_quic_secret_t *secret;
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78 ngx_uint_t type;
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79 ngx_uint_t *number;
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80 ngx_uint_t flags;
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81 uint32_t version;
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82 ngx_str_t token;
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83 ngx_quic_level_t level;
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84
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85 /* filled in by parser */
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86 ngx_buf_t *raw; /* udp datagram from wire */
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87
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88 u_char *data; /* quic packet */
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89 size_t len;
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90
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91 /* cleartext fields */
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92 ngx_str_t dcid;
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93 ngx_str_t scid;
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94
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95 uint64_t pn;
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96
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97 ngx_str_t payload; /* decrypted payload */
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98
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99 } ngx_quic_header_t;
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100
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101 void ngx_quic_build_int(u_char **pos, uint64_t value);
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102
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103 void ngx_quic_init_ssl_methods(SSL_CTX* ctx);
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104
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105 void ngx_quic_run(ngx_connection_t *c, ngx_ssl_t *ssl, ngx_msec_t timeout,
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106 ngx_connection_handler_pt handler);
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107 ngx_connection_t *ngx_quic_create_uni_stream(ngx_connection_t *c);
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108
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109
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110 /********************************* DEBUG *************************************/
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111
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112 #if (NGX_DEBUG)
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113
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114 #define ngx_quic_hexdump(log, fmt, data, len, ...) \
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115 do { \
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116 ngx_int_t m; \
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117 u_char buf[2048]; \
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118 \
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119 if (log->log_level & NGX_LOG_DEBUG_EVENT) { \
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120 m = ngx_hex_dump(buf, (u_char *) data, ngx_min(len, 1024)) - buf; \
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121 ngx_log_debug(NGX_LOG_DEBUG_EVENT, log, 0, \
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122 "%s: " fmt " %*s%s, len: %uz", \
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123 __FUNCTION__, __VA_ARGS__, m, buf, \
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124 len < 2048 ? "" : "...", len); \
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125 } \
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126 } while (0)
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127
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128 #else
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129
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130 #define ngx_quic_hexdump(log, fmt, data, len, ...)
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131
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132 #endif
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133
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134 #define ngx_quic_hexdump0(log, fmt, data, len) \
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135 ngx_quic_hexdump(log, fmt "%s", data, len, "") \
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136
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137
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138 #endif /* _NGX_EVENT_QUIC_H_INCLUDED_ */