Mercurial > hg > nginx
annotate src/os/win32/ngx_udp_wsarecv.c @ 6791:cb4a4e9bba8e
Perl: fixed optimization in SSI command handler.
As the pointer to the first argument was tested instead of the argument
itself, array of arguments was always created, even if there were no
arguments. Fix is to test args[0] instead of args.
Found by Coverity (CID 1356862).
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 01 Nov 2016 20:39:21 +0300 |
parents | d620f497c50f |
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rev | line source |
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441
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1 |
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2 /* |
444
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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 |
103
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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 |
1680 | 13 ssize_t |
1689 | 14 ngx_udp_wsarecv(ngx_connection_t *c, u_char *buf, size_t size) |
103
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15 { |
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16 int rc; |
280
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17 u_long bytes, flags; |
184
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18 WSABUF wsabuf[1]; |
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19 ngx_err_t err; |
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20 ngx_event_t *rev; |
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21 |
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22 wsabuf[0].buf = (char *) buf; |
184
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23 wsabuf[0].len = size; |
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24 flags = 0; |
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25 bytes = 0; |
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26 |
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27 rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, NULL, NULL); |
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28 |
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29 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, |
461 | 30 "WSARecv: fd:%d rc:%d %ul of %z", c->fd, rc, bytes, size); |
184
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31 |
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32 rev = c->read; |
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33 |
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34 if (rc == -1) { |
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35 rev->ready = 0; |
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36 err = ngx_socket_errno; |
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37 |
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38 if (err == WSAEWOULDBLOCK) { |
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39 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
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40 "WSARecv() not ready"); |
184
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41 return NGX_AGAIN; |
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42 } |
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43 |
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44 rev->error = 1; |
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45 ngx_connection_error(c, err, "WSARecv() failed"); |
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46 |
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47 return NGX_ERROR; |
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48 } |
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49 |
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50 return bytes; |
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51 } |
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52 |
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53 |
1680 | 54 ssize_t |
1689 | 55 ngx_udp_overlapped_wsarecv(ngx_connection_t *c, u_char *buf, size_t size) |
184
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56 { |
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57 int rc; |
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58 u_long bytes, flags; |
184
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59 WSABUF wsabuf[1]; |
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60 ngx_err_t err; |
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61 ngx_event_t *rev; |
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62 LPWSAOVERLAPPED ovlp; |
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63 |
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64 rev = c->read; |
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65 |
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66 if (!rev->ready) { |
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67 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "second wsa post"); |
184
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68 return NGX_AGAIN; |
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69 } |
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70 |
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71 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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72 "rev->complete: %d", rev->complete); |
184
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73 |
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74 if (rev->complete) { |
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75 rev->complete = 0; |
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76 |
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77 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
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78 if (rev->ovlp.error) { |
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79 ngx_connection_error(c, rev->ovlp.error, "WSARecv() failed"); |
184
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80 return NGX_ERROR; |
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81 } |
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82 |
461 | 83 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
84 "WSARecv ovlp: fd:%d %ul of %z", | |
85 c->fd, rev->available, size); | |
86 | |
184
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87 return rev->available; |
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88 } |
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89 |
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90 if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &rev->ovlp, |
2776 | 91 &bytes, 0, NULL) |
92 == 0) | |
93 { | |
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94 ngx_connection_error(c, ngx_socket_errno, |
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95 "WSARecv() or WSAGetOverlappedResult() failed"); |
184
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96 return NGX_ERROR; |
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97 } |
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98 |
461 | 99 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
100 "WSARecv: fd:%d %ul of %z", c->fd, bytes, size); | |
101 | |
184
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102 return bytes; |
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103 } |
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104 |
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105 ovlp = (LPWSAOVERLAPPED) &rev->ovlp; |
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106 ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); |
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107 wsabuf[0].buf = (char *) buf; |
184
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108 wsabuf[0].len = size; |
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109 flags = 0; |
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110 bytes = 0; |
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111 |
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112 rc = WSARecv(c->fd, wsabuf, 1, &bytes, &flags, ovlp, NULL); |
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113 |
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114 rev->complete = 0; |
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115 |
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
184
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116 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, |
461 | 117 "WSARecv ovlp: fd:%d rc:%d %ul of %z", |
118 c->fd, rc, bytes, size); | |
184
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nginx-0.0.1-2003-11-14-10:20:34 import
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119 |
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nginx-0.0.1-2003-11-14-10:20:34 import
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120 if (rc == -1) { |
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nginx-0.0.1-2003-11-14-10:20:34 import
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121 err = ngx_socket_errno; |
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nginx-0.0.1-2003-11-14-10:20:34 import
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122 if (err == WSA_IO_PENDING) { |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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123 rev->active = 1; |
461 | 124 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
125 "WSARecv() posted"); | |
184
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nginx-0.0.1-2003-11-14-10:20:34 import
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126 return NGX_AGAIN; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
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127 } |
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nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
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128 |
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nginx-0.0.1-2003-11-14-10:20:34 import
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129 rev->error = 1; |
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
184
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130 ngx_connection_error(c, err, "WSARecv() failed"); |
184
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nginx-0.0.1-2003-11-14-10:20:34 import
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131 return NGX_ERROR; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
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132 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
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133 |
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nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
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134 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
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135 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
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136 /* |
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nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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137 * if a socket was bound with I/O completion port |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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138 * then GetQueuedCompletionStatus() would anyway return its status |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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139 * despite that WSARecv() was already complete |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
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140 */ |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
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141 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
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142 rev->active = 1; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
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143 return NGX_AGAIN; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
144 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
145 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
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146 rev->active = 0; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
147 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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148 return bytes; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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149 } |