Mercurial > hg > nginx-quic
annotate src/os/win32/ngx_wsarecv_chain.c @ 8275:916a2e1d6617 quic
HTTP/3: client header validation.
A header with the name containing null, CR, LF, colon or uppercase characters,
is now considered an error. A header with the value containing null, CR or LF,
is also considered an error.
Also, header is considered invalid unless its name only contains lowercase
characters, digits, minus and optionally underscore. Such header can be
optionally ignored.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Mon, 18 Jan 2021 13:43:36 +0300 |
parents | efd71d49bde0 |
children | ecf2a9002b37 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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11 |
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12 |
577 | 13 #define NGX_WSABUFS 8 |
501 | 14 |
15 | |
16 ssize_t | |
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17 ngx_wsarecv_chain(ngx_connection_t *c, ngx_chain_t *chain, off_t limit) |
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18 { |
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19 int rc; |
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20 u_char *prev; |
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21 u_long bytes, flags; |
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22 size_t n, size; |
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23 ngx_err_t err; |
501 | 24 ngx_array_t vec; |
186
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25 ngx_event_t *rev; |
501 | 26 LPWSABUF wsabuf; |
27 WSABUF wsabufs[NGX_WSABUFS]; | |
186
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28 |
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29 prev = NULL; |
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30 wsabuf = NULL; |
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31 flags = 0; |
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32 size = 0; |
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33 bytes = 0; |
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34 |
501 | 35 vec.elts = wsabufs; |
36 vec.nelts = 0; | |
37 vec.size = sizeof(WSABUF); | |
577 | 38 vec.nalloc = NGX_WSABUFS; |
501 | 39 vec.pool = c->pool; |
186
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40 |
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41 /* coalesce the neighbouring bufs */ |
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42 |
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43 while (chain) { |
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44 n = chain->buf->end - chain->buf->last; |
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45 |
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46 if (limit) { |
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47 if (size >= (size_t) limit) { |
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48 break; |
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49 } |
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50 |
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51 if (size + n > (size_t) limit) { |
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52 n = (size_t) limit - size; |
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53 } |
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54 } |
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55 |
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56 if (prev == chain->buf->last) { |
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57 wsabuf->len += n; |
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58 |
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59 } else { |
501 | 60 wsabuf = ngx_array_push(&vec); |
61 if (wsabuf == NULL) { | |
62 return NGX_ERROR; | |
63 } | |
64 | |
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65 wsabuf->buf = (char *) chain->buf->last; |
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66 wsabuf->len = n; |
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67 } |
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68 |
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69 size += n; |
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70 prev = chain->buf->end; |
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71 chain = chain->next; |
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72 } |
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73 |
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74 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
501 | 75 "WSARecv: %d:%d", vec.nelts, wsabuf->len); |
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76 |
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77 |
501 | 78 rc = WSARecv(c->fd, vec.elts, vec.nelts, &bytes, &flags, NULL, NULL); |
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79 |
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80 rev = c->read; |
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81 |
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82 if (rc == -1) { |
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83 rev->ready = 0; |
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84 err = ngx_socket_errno; |
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85 |
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86 if (err == WSAEWOULDBLOCK) { |
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87 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
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88 "WSARecv() not ready"); |
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89 return NGX_AGAIN; |
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90 } |
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91 |
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92 rev->error = 1; |
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93 ngx_connection_error(c, err, "WSARecv() failed"); |
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94 return NGX_ERROR; |
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95 } |
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96 |
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97 #if (NGX_HAVE_FIONREAD) |
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98 |
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99 if (rev->available >= 0 && bytes > 0) { |
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100 rev->available -= bytes; |
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101 |
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102 /* |
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103 * negative rev->available means some additional bytes |
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104 * were received between kernel notification and WSARecv(), |
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105 * and therefore ev->ready can be safely reset even for |
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106 * edge-triggered event methods |
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107 */ |
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108 |
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109 if (rev->available < 0) { |
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110 rev->available = 0; |
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111 rev->ready = 0; |
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112 } |
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113 |
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114 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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115 "WSARecv: avail:%d", rev->available); |
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116 |
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117 } else if (bytes == size) { |
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118 |
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119 if (ngx_socket_nread(c->fd, &rev->available) == -1) { |
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120 rev->error = 1; |
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121 ngx_connection_error(c, ngx_socket_errno, |
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122 ngx_socket_nread_n " failed"); |
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123 return NGX_ERROR; |
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124 } |
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125 |
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126 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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127 "WSARecv: avail:%d", rev->available); |
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128 } |
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129 |
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130 #endif |
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131 |
186
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132 if (bytes < size) { |
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133 rev->ready = 0; |
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134 } |
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135 |
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136 if (bytes == 0) { |
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137 rev->eof = 1; |
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138 } |
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139 |
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140 return bytes; |
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141 } |