Mercurial > hg > nginx
annotate src/event/ngx_event_udp.c @ 7851:aa5f8825f24d
Resolver: fixed label types handling in ngx_resolver_copy().
Previously, anything with any of the two high bits set were interpreted
as compression pointers. This is incorrect, as RFC 1035 clearly states
that "The 10 and 01 combinations are reserved for future use". Further,
the 01 combination is actually allocated for EDNS extended label type
(see RFC 2671 and RFC 6891), not really used though.
Fix is to reject unrecognized label types rather than misinterpreting
them as compression pointers.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Tue, 25 May 2021 15:17:41 +0300 |
| parents | fdc3d40979b0 |
| children | 0f6cc8f73744 7f95010f10b7 |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Roman Arutyunyan |
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4 * Copyright (C) Nginx, Inc. |
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5 */ |
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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 |
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13 #if !(NGX_WIN32) |
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14 |
| 7286 | 15 struct ngx_udp_connection_s { |
| 16 ngx_rbtree_node_t node; | |
| 17 ngx_connection_t *connection; | |
| 18 ngx_buf_t *buffer; | |
| 19 }; | |
| 20 | |
| 21 | |
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22 static void ngx_close_accepted_udp_connection(ngx_connection_t *c); |
| 7286 | 23 static ssize_t ngx_udp_shared_recv(ngx_connection_t *c, u_char *buf, |
| 24 size_t size); | |
| 25 static ngx_int_t ngx_insert_udp_connection(ngx_connection_t *c); | |
| 26 static ngx_connection_t *ngx_lookup_udp_connection(ngx_listening_t *ls, | |
| 27 struct sockaddr *sockaddr, socklen_t socklen, | |
| 28 struct sockaddr *local_sockaddr, socklen_t local_socklen); | |
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29 |
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30 |
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31 void |
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32 ngx_event_recvmsg(ngx_event_t *ev) |
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33 { |
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34 ssize_t n; |
| 7286 | 35 ngx_buf_t buf; |
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36 ngx_log_t *log; |
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37 ngx_err_t err; |
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38 socklen_t socklen, local_socklen; |
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39 ngx_event_t *rev, *wev; |
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40 struct iovec iov[1]; |
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41 struct msghdr msg; |
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42 ngx_sockaddr_t sa, lsa; |
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43 struct sockaddr *sockaddr, *local_sockaddr; |
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44 ngx_listening_t *ls; |
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45 ngx_event_conf_t *ecf; |
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46 ngx_connection_t *c, *lc; |
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47 static u_char buffer[65535]; |
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48 |
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49 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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50 |
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51 #if (NGX_HAVE_IP_RECVDSTADDR) |
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52 u_char msg_control[CMSG_SPACE(sizeof(struct in_addr))]; |
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53 #elif (NGX_HAVE_IP_PKTINFO) |
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54 u_char msg_control[CMSG_SPACE(sizeof(struct in_pktinfo))]; |
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55 #endif |
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56 |
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57 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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58 u_char msg_control6[CMSG_SPACE(sizeof(struct in6_pktinfo))]; |
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59 #endif |
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60 |
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61 #endif |
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62 |
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63 if (ev->timedout) { |
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64 if (ngx_enable_accept_events((ngx_cycle_t *) ngx_cycle) != NGX_OK) { |
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65 return; |
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66 } |
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67 |
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68 ev->timedout = 0; |
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69 } |
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70 |
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71 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); |
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72 |
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73 if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { |
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74 ev->available = ecf->multi_accept; |
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75 } |
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76 |
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77 lc = ev->data; |
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78 ls = lc->listening; |
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79 ev->ready = 0; |
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80 |
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81 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
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82 "recvmsg on %V, ready: %d", &ls->addr_text, ev->available); |
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83 |
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84 do { |
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85 ngx_memzero(&msg, sizeof(struct msghdr)); |
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86 |
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87 iov[0].iov_base = (void *) buffer; |
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88 iov[0].iov_len = sizeof(buffer); |
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89 |
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90 msg.msg_name = &sa; |
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91 msg.msg_namelen = sizeof(ngx_sockaddr_t); |
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92 msg.msg_iov = iov; |
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93 msg.msg_iovlen = 1; |
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94 |
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95 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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96 |
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97 if (ls->wildcard) { |
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98 |
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99 #if (NGX_HAVE_IP_RECVDSTADDR || NGX_HAVE_IP_PKTINFO) |
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100 if (ls->sockaddr->sa_family == AF_INET) { |
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101 msg.msg_control = &msg_control; |
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102 msg.msg_controllen = sizeof(msg_control); |
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103 } |
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104 #endif |
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105 |
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106 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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107 if (ls->sockaddr->sa_family == AF_INET6) { |
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108 msg.msg_control = &msg_control6; |
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109 msg.msg_controllen = sizeof(msg_control6); |
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110 } |
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111 #endif |
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112 } |
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113 |
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114 #endif |
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115 |
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116 n = recvmsg(lc->fd, &msg, 0); |
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117 |
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118 if (n == -1) { |
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119 err = ngx_socket_errno; |
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120 |
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121 if (err == NGX_EAGAIN) { |
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122 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, |
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123 "recvmsg() not ready"); |
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124 return; |
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125 } |
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126 |
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127 ngx_log_error(NGX_LOG_ALERT, ev->log, err, "recvmsg() failed"); |
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128 |
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129 return; |
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130 } |
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131 |
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132 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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133 if (msg.msg_flags & (MSG_TRUNC|MSG_CTRUNC)) { |
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134 ngx_log_error(NGX_LOG_ALERT, ev->log, 0, |
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135 "recvmsg() truncated data"); |
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136 continue; |
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137 } |
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138 #endif |
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139 |
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140 sockaddr = msg.msg_name; |
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141 socklen = msg.msg_namelen; |
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142 |
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143 if (socklen > (socklen_t) sizeof(ngx_sockaddr_t)) { |
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144 socklen = sizeof(ngx_sockaddr_t); |
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145 } |
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146 |
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147 if (socklen == 0) { |
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148 |
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149 /* |
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150 * on Linux recvmsg() returns zero msg_namelen |
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151 * when receiving packets from unbound AF_UNIX sockets |
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152 */ |
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153 |
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154 socklen = sizeof(struct sockaddr); |
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155 ngx_memzero(&sa, sizeof(struct sockaddr)); |
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156 sa.sockaddr.sa_family = ls->sockaddr->sa_family; |
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157 } |
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158 |
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159 local_sockaddr = ls->sockaddr; |
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160 local_socklen = ls->socklen; |
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161 |
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162 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) |
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163 |
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164 if (ls->wildcard) { |
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165 struct cmsghdr *cmsg; |
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166 |
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167 ngx_memcpy(&lsa, local_sockaddr, local_socklen); |
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168 local_sockaddr = &lsa.sockaddr; |
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169 |
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170 for (cmsg = CMSG_FIRSTHDR(&msg); |
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171 cmsg != NULL; |
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172 cmsg = CMSG_NXTHDR(&msg, cmsg)) |
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173 { |
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174 |
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175 #if (NGX_HAVE_IP_RECVDSTADDR) |
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176 |
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177 if (cmsg->cmsg_level == IPPROTO_IP |
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178 && cmsg->cmsg_type == IP_RECVDSTADDR |
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179 && local_sockaddr->sa_family == AF_INET) |
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180 { |
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181 struct in_addr *addr; |
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182 struct sockaddr_in *sin; |
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183 |
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184 addr = (struct in_addr *) CMSG_DATA(cmsg); |
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185 sin = (struct sockaddr_in *) local_sockaddr; |
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186 sin->sin_addr = *addr; |
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187 |
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188 break; |
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189 } |
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190 |
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191 #elif (NGX_HAVE_IP_PKTINFO) |
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192 |
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193 if (cmsg->cmsg_level == IPPROTO_IP |
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194 && cmsg->cmsg_type == IP_PKTINFO |
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195 && local_sockaddr->sa_family == AF_INET) |
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196 { |
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197 struct in_pktinfo *pkt; |
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198 struct sockaddr_in *sin; |
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199 |
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200 pkt = (struct in_pktinfo *) CMSG_DATA(cmsg); |
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201 sin = (struct sockaddr_in *) local_sockaddr; |
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202 sin->sin_addr = pkt->ipi_addr; |
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203 |
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204 break; |
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205 } |
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206 |
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207 #endif |
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208 |
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209 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) |
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210 |
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211 if (cmsg->cmsg_level == IPPROTO_IPV6 |
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212 && cmsg->cmsg_type == IPV6_PKTINFO |
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213 && local_sockaddr->sa_family == AF_INET6) |
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214 { |
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215 struct in6_pktinfo *pkt6; |
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216 struct sockaddr_in6 *sin6; |
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217 |
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218 pkt6 = (struct in6_pktinfo *) CMSG_DATA(cmsg); |
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219 sin6 = (struct sockaddr_in6 *) local_sockaddr; |
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220 sin6->sin6_addr = pkt6->ipi6_addr; |
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221 |
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222 break; |
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223 } |
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224 |
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225 #endif |
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226 |
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227 } |
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228 } |
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229 |
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230 #endif |
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231 |
| 7286 | 232 c = ngx_lookup_udp_connection(ls, sockaddr, socklen, local_sockaddr, |
| 233 local_socklen); | |
| 234 | |
| 235 if (c) { | |
| 236 | |
| 237 #if (NGX_DEBUG) | |
| 238 if (c->log->log_level & NGX_LOG_DEBUG_EVENT) { | |
| 239 ngx_log_handler_pt handler; | |
| 240 | |
| 241 handler = c->log->handler; | |
| 242 c->log->handler = NULL; | |
| 243 | |
| 244 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
| 245 "recvmsg: fd:%d n:%z", c->fd, n); | |
| 246 | |
| 247 c->log->handler = handler; | |
| 248 } | |
| 249 #endif | |
| 250 | |
| 251 ngx_memzero(&buf, sizeof(ngx_buf_t)); | |
| 252 | |
| 253 buf.pos = buffer; | |
| 254 buf.last = buffer + n; | |
| 255 | |
| 256 rev = c->read; | |
| 257 | |
| 258 c->udp->buffer = &buf; | |
|
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259 |
| 7286 | 260 rev->ready = 1; |
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261 rev->active = 0; |
| 7286 | 262 |
| 263 rev->handler(rev); | |
| 264 | |
|
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265 if (c->udp) { |
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266 c->udp->buffer = NULL; |
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267 } |
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268 |
| 7286 | 269 rev->ready = 0; |
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270 rev->active = 1; |
| 7286 | 271 |
| 272 goto next; | |
| 273 } | |
| 274 | |
|
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275 #if (NGX_STAT_STUB) |
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276 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); |
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277 #endif |
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278 |
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279 ngx_accept_disabled = ngx_cycle->connection_n / 8 |
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280 - ngx_cycle->free_connection_n; |
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281 |
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282 c = ngx_get_connection(lc->fd, ev->log); |
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283 if (c == NULL) { |
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284 return; |
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285 } |
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286 |
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287 c->shared = 1; |
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288 c->type = SOCK_DGRAM; |
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289 c->socklen = socklen; |
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290 |
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291 #if (NGX_STAT_STUB) |
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292 (void) ngx_atomic_fetch_add(ngx_stat_active, 1); |
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293 #endif |
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294 |
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295 c->pool = ngx_create_pool(ls->pool_size, ev->log); |
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296 if (c->pool == NULL) { |
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297 ngx_close_accepted_udp_connection(c); |
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298 return; |
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299 } |
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300 |
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301 c->sockaddr = ngx_palloc(c->pool, socklen); |
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302 if (c->sockaddr == NULL) { |
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303 ngx_close_accepted_udp_connection(c); |
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304 return; |
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305 } |
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306 |
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307 ngx_memcpy(c->sockaddr, sockaddr, socklen); |
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308 |
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309 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); |
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310 if (log == NULL) { |
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311 ngx_close_accepted_udp_connection(c); |
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312 return; |
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313 } |
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314 |
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315 *log = ls->log; |
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316 |
| 7286 | 317 c->recv = ngx_udp_shared_recv; |
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318 c->send = ngx_udp_send; |
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319 c->send_chain = ngx_udp_send_chain; |
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320 |
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321 c->log = log; |
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322 c->pool->log = log; |
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323 c->listening = ls; |
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324 |
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325 if (local_sockaddr == &lsa.sockaddr) { |
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326 local_sockaddr = ngx_palloc(c->pool, local_socklen); |
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327 if (local_sockaddr == NULL) { |
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328 ngx_close_accepted_udp_connection(c); |
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329 return; |
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330 } |
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331 |
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332 ngx_memcpy(local_sockaddr, &lsa, local_socklen); |
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333 } |
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334 |
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335 c->local_sockaddr = local_sockaddr; |
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336 c->local_socklen = local_socklen; |
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337 |
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338 c->buffer = ngx_create_temp_buf(c->pool, n); |
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339 if (c->buffer == NULL) { |
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340 ngx_close_accepted_udp_connection(c); |
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341 return; |
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342 } |
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343 |
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344 c->buffer->last = ngx_cpymem(c->buffer->last, buffer, n); |
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345 |
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346 rev = c->read; |
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347 wev = c->write; |
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348 |
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349 rev->active = 1; |
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350 wev->ready = 1; |
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351 |
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352 rev->log = log; |
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353 wev->log = log; |
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354 |
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355 /* |
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356 * TODO: MT: - ngx_atomic_fetch_add() |
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357 * or protection by critical section or light mutex |
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358 * |
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359 * TODO: MP: - allocated in a shared memory |
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360 * - ngx_atomic_fetch_add() |
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361 * or protection by critical section or light mutex |
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362 */ |
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363 |
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364 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); |
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365 |
|
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366 c->start_time = ngx_current_msec; |
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367 |
|
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368 #if (NGX_STAT_STUB) |
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369 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); |
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370 #endif |
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371 |
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372 if (ls->addr_ntop) { |
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373 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); |
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374 if (c->addr_text.data == NULL) { |
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375 ngx_close_accepted_udp_connection(c); |
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376 return; |
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377 } |
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378 |
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379 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
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380 c->addr_text.data, |
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381 ls->addr_text_max_len, 0); |
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382 if (c->addr_text.len == 0) { |
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383 ngx_close_accepted_udp_connection(c); |
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384 return; |
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385 } |
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386 } |
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387 |
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388 #if (NGX_DEBUG) |
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389 { |
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390 ngx_str_t addr; |
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391 u_char text[NGX_SOCKADDR_STRLEN]; |
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392 |
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393 ngx_debug_accepted_connection(ecf, c); |
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394 |
|
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395 if (log->log_level & NGX_LOG_DEBUG_EVENT) { |
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396 addr.data = text; |
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397 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, |
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398 NGX_SOCKADDR_STRLEN, 1); |
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|
399 |
|
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|
400 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, log, 0, |
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|
401 "*%uA recvmsg: %V fd:%d n:%z", |
|
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|
402 c->number, &addr, c->fd, n); |
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|
403 } |
|
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|
404 |
|
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|
405 } |
|
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|
406 #endif |
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|
407 |
| 7286 | 408 if (ngx_insert_udp_connection(c) != NGX_OK) { |
| 409 ngx_close_accepted_udp_connection(c); | |
| 410 return; | |
| 411 } | |
| 412 | |
|
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|
413 log->data = NULL; |
|
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|
414 log->handler = NULL; |
|
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|
415 |
|
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|
416 ls->handler(c); |
|
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417 |
| 7286 | 418 next: |
| 419 | |
|
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420 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
|
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|
421 ev->available -= n; |
|
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422 } |
|
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423 |
|
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|
424 } while (ev->available); |
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425 } |
|
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|
426 |
|
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|
427 |
|
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|
428 static void |
|
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|
429 ngx_close_accepted_udp_connection(ngx_connection_t *c) |
|
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430 { |
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431 ngx_free_connection(c); |
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432 |
|
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433 c->fd = (ngx_socket_t) -1; |
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434 |
|
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|
435 if (c->pool) { |
|
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|
436 ngx_destroy_pool(c->pool); |
|
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437 } |
|
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438 |
|
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|
439 #if (NGX_STAT_STUB) |
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|
440 (void) ngx_atomic_fetch_add(ngx_stat_active, -1); |
|
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441 #endif |
|
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442 } |
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|
443 |
| 7286 | 444 |
| 445 static ssize_t | |
| 446 ngx_udp_shared_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
| 447 { | |
| 448 ssize_t n; | |
| 449 ngx_buf_t *b; | |
| 450 | |
| 451 if (c->udp == NULL || c->udp->buffer == NULL) { | |
| 452 return NGX_AGAIN; | |
| 453 } | |
| 454 | |
| 455 b = c->udp->buffer; | |
| 456 | |
| 457 n = ngx_min(b->last - b->pos, (ssize_t) size); | |
| 458 | |
| 459 ngx_memcpy(buf, b->pos, n); | |
| 460 | |
| 461 c->udp->buffer = NULL; | |
|
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|
462 |
| 7286 | 463 c->read->ready = 0; |
|
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Prevented scheduling events on a shared connection.
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diff
changeset
|
464 c->read->active = 1; |
| 7286 | 465 |
| 466 return n; | |
| 467 } | |
| 468 | |
| 469 | |
| 470 void | |
| 471 ngx_udp_rbtree_insert_value(ngx_rbtree_node_t *temp, | |
| 472 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel) | |
| 473 { | |
| 474 ngx_int_t rc; | |
| 475 ngx_connection_t *c, *ct; | |
| 476 ngx_rbtree_node_t **p; | |
| 477 ngx_udp_connection_t *udp, *udpt; | |
| 478 | |
| 479 for ( ;; ) { | |
| 480 | |
| 481 if (node->key < temp->key) { | |
| 482 | |
| 483 p = &temp->left; | |
| 484 | |
| 485 } else if (node->key > temp->key) { | |
| 486 | |
| 487 p = &temp->right; | |
| 488 | |
| 489 } else { /* node->key == temp->key */ | |
| 490 | |
| 491 udp = (ngx_udp_connection_t *) node; | |
| 492 c = udp->connection; | |
| 493 | |
| 494 udpt = (ngx_udp_connection_t *) temp; | |
| 495 ct = udpt->connection; | |
| 496 | |
| 497 rc = ngx_cmp_sockaddr(c->sockaddr, c->socklen, | |
| 498 ct->sockaddr, ct->socklen, 1); | |
| 499 | |
| 500 if (rc == 0 && c->listening->wildcard) { | |
| 501 rc = ngx_cmp_sockaddr(c->local_sockaddr, c->local_socklen, | |
| 502 ct->local_sockaddr, ct->local_socklen, 1); | |
| 503 } | |
| 504 | |
| 505 p = (rc < 0) ? &temp->left : &temp->right; | |
| 506 } | |
| 507 | |
| 508 if (*p == sentinel) { | |
| 509 break; | |
| 510 } | |
| 511 | |
| 512 temp = *p; | |
| 513 } | |
| 514 | |
| 515 *p = node; | |
| 516 node->parent = temp; | |
| 517 node->left = sentinel; | |
| 518 node->right = sentinel; | |
| 519 ngx_rbt_red(node); | |
| 520 } | |
| 521 | |
| 522 | |
| 523 static ngx_int_t | |
| 524 ngx_insert_udp_connection(ngx_connection_t *c) | |
| 525 { | |
| 526 uint32_t hash; | |
| 527 ngx_pool_cleanup_t *cln; | |
| 528 ngx_udp_connection_t *udp; | |
| 529 | |
| 530 if (c->udp) { | |
| 531 return NGX_OK; | |
| 532 } | |
| 533 | |
| 534 udp = ngx_pcalloc(c->pool, sizeof(ngx_udp_connection_t)); | |
| 535 if (udp == NULL) { | |
| 536 return NGX_ERROR; | |
| 537 } | |
| 538 | |
| 539 udp->connection = c; | |
| 540 | |
| 541 ngx_crc32_init(hash); | |
| 542 ngx_crc32_update(&hash, (u_char *) c->sockaddr, c->socklen); | |
| 543 | |
| 544 if (c->listening->wildcard) { | |
| 545 ngx_crc32_update(&hash, (u_char *) c->local_sockaddr, c->local_socklen); | |
| 546 } | |
| 547 | |
| 548 ngx_crc32_final(hash); | |
| 549 | |
| 550 udp->node.key = hash; | |
| 551 | |
| 552 cln = ngx_pool_cleanup_add(c->pool, 0); | |
| 553 if (cln == NULL) { | |
| 554 return NGX_ERROR; | |
| 555 } | |
| 556 | |
| 557 cln->data = c; | |
| 558 cln->handler = ngx_delete_udp_connection; | |
| 559 | |
| 560 ngx_rbtree_insert(&c->listening->rbtree, &udp->node); | |
| 561 | |
| 562 c->udp = udp; | |
| 563 | |
| 564 return NGX_OK; | |
| 565 } | |
| 566 | |
| 567 | |
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Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
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diff
changeset
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568 void |
| 7286 | 569 ngx_delete_udp_connection(void *data) |
| 570 { | |
| 571 ngx_connection_t *c = data; | |
| 572 | |
|
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573 if (c->udp == NULL) { |
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diff
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|
574 return; |
|
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Vladimir Homutov <vl@nginx.com>
parents:
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575 } |
|
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Vladimir Homutov <vl@nginx.com>
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576 |
| 7286 | 577 ngx_rbtree_delete(&c->listening->rbtree, &c->udp->node); |
|
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27559d4a5151
Stream: fixed possible use of a freed connection.
Vladimir Homutov <vl@nginx.com>
parents:
7286
diff
changeset
|
578 |
|
27559d4a5151
Stream: fixed possible use of a freed connection.
Vladimir Homutov <vl@nginx.com>
parents:
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diff
changeset
|
579 c->udp = NULL; |
| 7286 | 580 } |
| 581 | |
| 582 | |
| 583 static ngx_connection_t * | |
| 584 ngx_lookup_udp_connection(ngx_listening_t *ls, struct sockaddr *sockaddr, | |
| 585 socklen_t socklen, struct sockaddr *local_sockaddr, socklen_t local_socklen) | |
| 586 { | |
| 587 uint32_t hash; | |
| 588 ngx_int_t rc; | |
| 589 ngx_connection_t *c; | |
| 590 ngx_rbtree_node_t *node, *sentinel; | |
| 591 ngx_udp_connection_t *udp; | |
| 592 | |
| 593 #if (NGX_HAVE_UNIX_DOMAIN) | |
| 594 | |
| 595 if (sockaddr->sa_family == AF_UNIX) { | |
| 596 struct sockaddr_un *saun = (struct sockaddr_un *) sockaddr; | |
| 597 | |
| 598 if (socklen <= (socklen_t) offsetof(struct sockaddr_un, sun_path) | |
| 599 || saun->sun_path[0] == '\0') | |
| 600 { | |
| 601 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, | |
| 602 "unbound unix socket"); | |
| 603 return NULL; | |
| 604 } | |
| 605 } | |
| 606 | |
|
7285
88a624c9b491
Events: moved ngx_recvmsg() to new file src/event/ngx_event_udp.c.
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
607 #endif |
| 7286 | 608 |
| 609 node = ls->rbtree.root; | |
| 610 sentinel = ls->rbtree.sentinel; | |
| 611 | |
| 612 ngx_crc32_init(hash); | |
| 613 ngx_crc32_update(&hash, (u_char *) sockaddr, socklen); | |
| 614 | |
| 615 if (ls->wildcard) { | |
| 616 ngx_crc32_update(&hash, (u_char *) local_sockaddr, local_socklen); | |
| 617 } | |
| 618 | |
| 619 ngx_crc32_final(hash); | |
| 620 | |
| 621 while (node != sentinel) { | |
| 622 | |
| 623 if (hash < node->key) { | |
| 624 node = node->left; | |
| 625 continue; | |
| 626 } | |
| 627 | |
| 628 if (hash > node->key) { | |
| 629 node = node->right; | |
| 630 continue; | |
| 631 } | |
| 632 | |
| 633 /* hash == node->key */ | |
| 634 | |
| 635 udp = (ngx_udp_connection_t *) node; | |
| 636 | |
| 637 c = udp->connection; | |
| 638 | |
| 639 rc = ngx_cmp_sockaddr(sockaddr, socklen, | |
| 640 c->sockaddr, c->socklen, 1); | |
| 641 | |
| 642 if (rc == 0 && ls->wildcard) { | |
| 643 rc = ngx_cmp_sockaddr(local_sockaddr, local_socklen, | |
| 644 c->local_sockaddr, c->local_socklen, 1); | |
| 645 } | |
| 646 | |
| 647 if (rc == 0) { | |
| 648 return c; | |
| 649 } | |
| 650 | |
| 651 node = (rc < 0) ? node->left : node->right; | |
| 652 } | |
| 653 | |
| 654 return NULL; | |
| 655 } | |
| 656 | |
|
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Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
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diff
changeset
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657 #else |
|
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Vladimir Homutov <vl@nginx.com>
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changeset
|
658 |
|
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Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
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diff
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|
659 void |
|
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Stream: proxy_requests directive.
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parents:
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changeset
|
660 ngx_delete_udp_connection(void *data) |
|
4698cede59ff
Stream: proxy_requests directive.
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parents:
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diff
changeset
|
661 { |
|
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
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diff
changeset
|
662 return; |
|
4698cede59ff
Stream: proxy_requests directive.
Vladimir Homutov <vl@nginx.com>
parents:
7391
diff
changeset
|
663 } |
|
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parents:
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diff
changeset
|
664 |
| 7286 | 665 #endif |