Mercurial > hg > nginx
annotate src/core/ngx_proxy_protocol.c @ 7882:b4073527be81
Disabled control characters in URIs.
Control characters (0x00-0x1f, 0x7f) were never allowed in URIs, and must
be percent-encoded by clients. Further, these are not believed to appear
in practice. On the other hand, passing such characters might make various
attacks possible or easier, despite the fact that currently allowed control
characters are not significant for HTTP request parsing.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 28 Jun 2021 18:01:15 +0300 |
parents | 89adf49fe76a |
children | 017fd847f4f7 |
rev | line source |
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5605
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Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
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1 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
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2 /* |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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3 * Copyright (C) Roman Arutyunyan |
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Roman Arutyunyan <arut@nginx.com>
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4 * Copyright (C) Nginx, Inc. |
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Added server-side support for PROXY protocol v1 (ticket #355).
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5 */ |
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Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
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6 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
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7 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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|
8 #include <ngx_config.h> |
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Added server-side support for PROXY protocol v1 (ticket #355).
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9 #include <ngx_core.h> |
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Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
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10 |
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Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
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11 |
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12 #define NGX_PROXY_PROTOCOL_AF_INET 1 |
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13 #define NGX_PROXY_PROTOCOL_AF_INET6 2 |
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14 |
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15 |
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16 #define ngx_proxy_protocol_parse_uint16(p) ((p)[0] << 8 | (p)[1]) |
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Core: added processing of version 2 of the PROXY protocol.
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17 |
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Core: added processing of version 2 of the PROXY protocol.
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18 |
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19 typedef struct { |
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20 u_char signature[12]; |
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21 u_char version_command; |
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22 u_char family_transport; |
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23 u_char len[2]; |
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24 } ngx_proxy_protocol_header_t; |
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25 |
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26 |
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27 typedef struct { |
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28 u_char src_addr[4]; |
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29 u_char dst_addr[4]; |
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30 u_char src_port[2]; |
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31 u_char dst_port[2]; |
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32 } ngx_proxy_protocol_inet_addrs_t; |
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33 |
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34 |
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35 typedef struct { |
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36 u_char src_addr[16]; |
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37 u_char dst_addr[16]; |
1fd992589ffe
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38 u_char src_port[2]; |
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Core: fixed build, broken by 63e91f263a49.
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39 u_char dst_port[2]; |
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Core: revised the PROXY protocol v2 code.
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40 } ngx_proxy_protocol_inet6_addrs_t; |
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41 |
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42 |
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Parsing server PROXY protocol address and port (ticket #1206).
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43 static u_char *ngx_proxy_protocol_read_addr(ngx_connection_t *c, u_char *p, |
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Parsing server PROXY protocol address and port (ticket #1206).
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44 u_char *last, ngx_str_t *addr); |
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Parsing server PROXY protocol address and port (ticket #1206).
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45 static u_char *ngx_proxy_protocol_read_port(u_char *p, u_char *last, |
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46 in_port_t *port, u_char sep); |
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47 static u_char *ngx_proxy_protocol_v2_read(ngx_connection_t *c, u_char *buf, |
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48 u_char *last); |
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49 |
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50 |
5605
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Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
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51 u_char * |
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52 ngx_proxy_protocol_read(ngx_connection_t *c, u_char *buf, u_char *last) |
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Added server-side support for PROXY protocol v1 (ticket #355).
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53 { |
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54 size_t len; |
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55 u_char *p; |
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56 ngx_proxy_protocol_t *pp; |
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57 |
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58 static const u_char signature[] = "\r\n\r\n\0\r\nQUIT\n"; |
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59 |
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60 p = buf; |
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Added server-side support for PROXY protocol v1 (ticket #355).
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61 len = last - buf; |
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62 |
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63 if (len >= sizeof(ngx_proxy_protocol_header_t) |
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64 && memcmp(p, signature, sizeof(signature) - 1) == 0) |
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65 { |
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66 return ngx_proxy_protocol_v2_read(c, buf, last); |
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67 } |
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68 |
5605
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Added server-side support for PROXY protocol v1 (ticket #355).
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69 if (len < 8 || ngx_strncmp(p, "PROXY ", 6) != 0) { |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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70 goto invalid; |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
diff
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71 } |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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72 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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73 p += 6; |
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Added server-side support for PROXY protocol v1 (ticket #355).
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74 len -= 6; |
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Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
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75 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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76 if (len >= 7 && ngx_strncmp(p, "UNKNOWN", 7) == 0) { |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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77 ngx_log_debug0(NGX_LOG_DEBUG_CORE, c->log, 0, |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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|
78 "PROXY protocol unknown protocol"); |
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Added server-side support for PROXY protocol v1 (ticket #355).
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79 p += 7; |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
diff
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|
80 goto skip; |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
81 } |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
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82 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
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83 if (len < 5 || ngx_strncmp(p, "TCP", 3) != 0 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
diff
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84 || (p[3] != '4' && p[3] != '6') || p[4] != ' ') |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
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|
85 { |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
diff
changeset
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86 goto invalid; |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
87 } |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
88 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
89 p += 5; |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
90 |
7590
06b01840bd42
Core: moved PROXY protocol fields out of ngx_connection_t.
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parents:
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91 pp = ngx_pcalloc(c->pool, sizeof(ngx_proxy_protocol_t)); |
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Core: moved PROXY protocol fields out of ngx_connection_t.
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parents:
7254
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|
92 if (pp == NULL) { |
5605
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Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
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93 return NULL; |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
diff
changeset
|
94 } |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
95 |
7591
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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parents:
7590
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96 p = ngx_proxy_protocol_read_addr(c, p, last, &pp->src_addr); |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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parents:
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diff
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97 if (p == NULL) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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parents:
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98 goto invalid; |
7590
06b01840bd42
Core: moved PROXY protocol fields out of ngx_connection_t.
Roman Arutyunyan <arut@nginx.com>
parents:
7254
diff
changeset
|
99 } |
06b01840bd42
Core: moved PROXY protocol fields out of ngx_connection_t.
Roman Arutyunyan <arut@nginx.com>
parents:
7254
diff
changeset
|
100 |
7591
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
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101 p = ngx_proxy_protocol_read_addr(c, p, last, &pp->dst_addr); |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
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102 if (p == NULL) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
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103 goto invalid; |
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28c76d9d75b7
Added the $proxy_protocol_port variable.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
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diff
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|
104 } |
28c76d9d75b7
Added the $proxy_protocol_port variable.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6185
diff
changeset
|
105 |
7591
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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106 p = ngx_proxy_protocol_read_port(p, last, &pp->src_port, ' '); |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
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107 if (p == NULL) { |
6561
28c76d9d75b7
Added the $proxy_protocol_port variable.
Dmitry Volyntsev <xeioex@nginx.com>
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108 goto invalid; |
28c76d9d75b7
Added the $proxy_protocol_port variable.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6185
diff
changeset
|
109 } |
28c76d9d75b7
Added the $proxy_protocol_port variable.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
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diff
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|
110 |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
111 p = ngx_proxy_protocol_read_port(p, last, &pp->dst_port, CR); |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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diff
changeset
|
112 if (p == NULL) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
113 goto invalid; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
114 } |
6561
28c76d9d75b7
Added the $proxy_protocol_port variable.
Dmitry Volyntsev <xeioex@nginx.com>
parents:
6185
diff
changeset
|
115 |
7591
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
116 if (p == last) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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diff
changeset
|
117 goto invalid; |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
118 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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parents:
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diff
changeset
|
119 |
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Parsing server PROXY protocol address and port (ticket #1206).
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diff
changeset
|
120 if (*p++ != LF) { |
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Parsing server PROXY protocol address and port (ticket #1206).
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diff
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|
121 goto invalid; |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
122 } |
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Parsing server PROXY protocol address and port (ticket #1206).
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parents:
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diff
changeset
|
123 |
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Parsing server PROXY protocol address and port (ticket #1206).
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diff
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|
124 ngx_log_debug4(NGX_LOG_DEBUG_CORE, c->log, 0, |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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diff
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|
125 "PROXY protocol src: %V %d, dst: %V %d", |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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diff
changeset
|
126 &pp->src_addr, pp->src_port, &pp->dst_addr, pp->dst_port); |
7590
06b01840bd42
Core: moved PROXY protocol fields out of ngx_connection_t.
Roman Arutyunyan <arut@nginx.com>
parents:
7254
diff
changeset
|
127 |
06b01840bd42
Core: moved PROXY protocol fields out of ngx_connection_t.
Roman Arutyunyan <arut@nginx.com>
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7254
diff
changeset
|
128 c->proxy_protocol = pp; |
5605
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
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parents:
diff
changeset
|
129 |
7591
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Parsing server PROXY protocol address and port (ticket #1206).
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diff
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|
130 return p; |
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Parsing server PROXY protocol address and port (ticket #1206).
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diff
changeset
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131 |
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Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
132 skip: |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
133 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
134 for ( /* void */ ; p < last - 1; p++) { |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
135 if (p[0] == CR && p[1] == LF) { |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
136 return p + 2; |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
137 } |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
138 } |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
139 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
140 invalid: |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
141 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
142 ngx_log_error(NGX_LOG_ERR, c->log, 0, |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
143 "broken header: \"%*s\"", (size_t) (last - buf), buf); |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
144 |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
145 return NULL; |
3a72b1805c52
Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents:
diff
changeset
|
146 } |
6184
fa663739e115
Stream: client-side PROXY protocol.
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
147 |
fa663739e115
Stream: client-side PROXY protocol.
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
148 |
7591
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Parsing server PROXY protocol address and port (ticket #1206).
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diff
changeset
|
149 static u_char * |
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Parsing server PROXY protocol address and port (ticket #1206).
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diff
changeset
|
150 ngx_proxy_protocol_read_addr(ngx_connection_t *c, u_char *p, u_char *last, |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
151 ngx_str_t *addr) |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
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diff
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|
152 { |
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Parsing server PROXY protocol address and port (ticket #1206).
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diff
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|
153 size_t len; |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
154 u_char ch, *pos; |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
155 |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
156 pos = p; |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
157 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
158 for ( ;; ) { |
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Parsing server PROXY protocol address and port (ticket #1206).
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diff
changeset
|
159 if (p == last) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
160 return NULL; |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
161 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
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diff
changeset
|
162 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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parents:
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diff
changeset
|
163 ch = *p++; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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parents:
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diff
changeset
|
164 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
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parents:
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diff
changeset
|
165 if (ch == ' ') { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
166 break; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
167 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
168 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
169 if (ch != ':' && ch != '.' |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
170 && (ch < 'a' || ch > 'f') |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
171 && (ch < 'A' || ch > 'F') |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
172 && (ch < '0' || ch > '9')) |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
173 { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
174 return NULL; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
175 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
176 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
177 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
178 len = p - pos - 1; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
179 |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
180 addr->data = ngx_pnalloc(c->pool, len); |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
181 if (addr->data == NULL) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
182 return NULL; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
183 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
184 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
185 ngx_memcpy(addr->data, pos, len); |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
186 addr->len = len; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
187 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
188 return p; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
189 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
190 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
191 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
192 static u_char * |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
193 ngx_proxy_protocol_read_port(u_char *p, u_char *last, in_port_t *port, |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
194 u_char sep) |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
195 { |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
196 size_t len; |
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Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
197 u_char *pos; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
198 ngx_int_t n; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
199 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
200 pos = p; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
201 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
202 for ( ;; ) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
203 if (p == last) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
204 return NULL; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
205 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
206 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
207 if (*p++ == sep) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
208 break; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
209 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
210 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
211 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
212 len = p - pos - 1; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
213 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
214 n = ngx_atoi(pos, len); |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
215 if (n < 0 || n > 65535) { |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
216 return NULL; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
217 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
218 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
219 *port = (in_port_t) n; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
220 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
221 return p; |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
222 } |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
223 |
89adf49fe76a
Parsing server PROXY protocol address and port (ticket #1206).
Roman Arutyunyan <arut@nginx.com>
parents:
7590
diff
changeset
|
224 |
6184
fa663739e115
Stream: client-side PROXY protocol.
Roman Arutyunyan <arut@nginx.com>
parents:
5605
diff
changeset
|
225 u_char * |
fa663739e115
Stream: client-side PROXY protocol.
Roman Arutyunyan <arut@nginx.com>
parents:
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diff
changeset
|
226 ngx_proxy_protocol_write(ngx_connection_t *c, u_char *buf, u_char *last) |
fa663739e115
Stream: client-side PROXY protocol.
Roman Arutyunyan <arut@nginx.com>
parents:
5605
diff
changeset
|
227 { |
fa663739e115
Stream: client-side PROXY protocol.
Roman Arutyunyan <arut@nginx.com>
parents:
5605
diff
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228 ngx_uint_t port, lport; |
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229 |
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230 if (last - buf < NGX_PROXY_PROTOCOL_MAX_HEADER) { |
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231 return NULL; |
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232 } |
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233 |
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234 if (ngx_connection_local_sockaddr(c, NULL, 0) != NGX_OK) { |
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235 return NULL; |
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|
236 } |
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237 |
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238 switch (c->sockaddr->sa_family) { |
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239 |
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240 case AF_INET: |
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241 buf = ngx_cpymem(buf, "PROXY TCP4 ", sizeof("PROXY TCP4 ") - 1); |
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242 break; |
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243 |
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244 #if (NGX_HAVE_INET6) |
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245 case AF_INET6: |
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246 buf = ngx_cpymem(buf, "PROXY TCP6 ", sizeof("PROXY TCP6 ") - 1); |
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247 break; |
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|
248 #endif |
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249 |
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|
250 default: |
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251 return ngx_cpymem(buf, "PROXY UNKNOWN" CRLF, |
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|
252 sizeof("PROXY UNKNOWN" CRLF) - 1); |
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253 } |
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254 |
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255 buf += ngx_sock_ntop(c->sockaddr, c->socklen, buf, last - buf, 0); |
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256 |
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257 *buf++ = ' '; |
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258 |
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259 buf += ngx_sock_ntop(c->local_sockaddr, c->local_socklen, buf, last - buf, |
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|
260 0); |
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261 |
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262 port = ngx_inet_get_port(c->sockaddr); |
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Introduced ngx_inet_get_port() and ngx_inet_set_port() functions.
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263 lport = ngx_inet_get_port(c->local_sockaddr); |
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264 |
6184
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265 return ngx_slprintf(buf, last, " %ui %ui" CRLF, port, lport); |
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266 } |
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267 |
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268 |
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269 static u_char * |
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270 ngx_proxy_protocol_v2_read(ngx_connection_t *c, u_char *buf, u_char *last) |
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271 { |
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272 u_char *end; |
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273 size_t len; |
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274 socklen_t socklen; |
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275 ngx_uint_t version, command, family, transport; |
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Parsing server PROXY protocol address and port (ticket #1206).
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276 ngx_sockaddr_t src_sockaddr, dst_sockaddr; |
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277 ngx_proxy_protocol_t *pp; |
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278 ngx_proxy_protocol_header_t *header; |
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279 ngx_proxy_protocol_inet_addrs_t *in; |
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280 #if (NGX_HAVE_INET6) |
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281 ngx_proxy_protocol_inet6_addrs_t *in6; |
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282 #endif |
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283 |
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284 header = (ngx_proxy_protocol_header_t *) buf; |
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285 |
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286 buf += sizeof(ngx_proxy_protocol_header_t); |
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287 |
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288 version = header->version_command >> 4; |
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289 |
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290 if (version != 2) { |
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|
291 ngx_log_error(NGX_LOG_ERR, c->log, 0, |
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292 "unknown PROXY protocol version: %ui", version); |
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293 return NULL; |
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|
294 } |
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295 |
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|
296 len = ngx_proxy_protocol_parse_uint16(header->len); |
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297 |
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|
298 if ((size_t) (last - buf) < len) { |
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299 ngx_log_error(NGX_LOG_ERR, c->log, 0, "header is too large"); |
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300 return NULL; |
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|
301 } |
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|
302 |
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|
303 end = buf + len; |
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304 |
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|
305 command = header->version_command & 0x0f; |
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306 |
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|
307 /* only PROXY is supported */ |
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|
308 if (command != 1) { |
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|
309 ngx_log_debug1(NGX_LOG_DEBUG_CORE, c->log, 0, |
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|
310 "PROXY protocol v2 unsupported command %ui", command); |
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|
311 return end; |
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|
312 } |
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313 |
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|
314 transport = header->family_transport & 0x0f; |
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315 |
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|
316 /* only STREAM is supported */ |
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|
317 if (transport != 1) { |
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|
318 ngx_log_debug1(NGX_LOG_DEBUG_CORE, c->log, 0, |
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|
319 "PROXY protocol v2 unsupported transport %ui", |
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|
320 transport); |
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Core: added processing of version 2 of the PROXY protocol.
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|
321 return end; |
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|
322 } |
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|
323 |
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324 pp = ngx_pcalloc(c->pool, sizeof(ngx_proxy_protocol_t)); |
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325 if (pp == NULL) { |
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326 return NULL; |
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327 } |
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328 |
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|
329 family = header->family_transport >> 4; |
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330 |
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331 switch (family) { |
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332 |
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|
333 case NGX_PROXY_PROTOCOL_AF_INET: |
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334 |
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335 if ((size_t) (end - buf) < sizeof(ngx_proxy_protocol_inet_addrs_t)) { |
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|
336 return NULL; |
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|
337 } |
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|
338 |
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|
339 in = (ngx_proxy_protocol_inet_addrs_t *) buf; |
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340 |
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Parsing server PROXY protocol address and port (ticket #1206).
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|
341 src_sockaddr.sockaddr_in.sin_family = AF_INET; |
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342 src_sockaddr.sockaddr_in.sin_port = 0; |
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|
343 memcpy(&src_sockaddr.sockaddr_in.sin_addr, in->src_addr, 4); |
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344 |
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345 dst_sockaddr.sockaddr_in.sin_family = AF_INET; |
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346 dst_sockaddr.sockaddr_in.sin_port = 0; |
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347 memcpy(&dst_sockaddr.sockaddr_in.sin_addr, in->dst_addr, 4); |
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348 |
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349 pp->src_port = ngx_proxy_protocol_parse_uint16(in->src_port); |
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350 pp->dst_port = ngx_proxy_protocol_parse_uint16(in->dst_port); |
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351 |
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352 socklen = sizeof(struct sockaddr_in); |
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353 |
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354 buf += sizeof(ngx_proxy_protocol_inet_addrs_t); |
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355 |
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356 break; |
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357 |
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358 #if (NGX_HAVE_INET6) |
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359 |
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360 case NGX_PROXY_PROTOCOL_AF_INET6: |
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361 |
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362 if ((size_t) (end - buf) < sizeof(ngx_proxy_protocol_inet6_addrs_t)) { |
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363 return NULL; |
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364 } |
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365 |
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366 in6 = (ngx_proxy_protocol_inet6_addrs_t *) buf; |
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367 |
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368 src_sockaddr.sockaddr_in6.sin6_family = AF_INET6; |
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369 src_sockaddr.sockaddr_in6.sin6_port = 0; |
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370 memcpy(&src_sockaddr.sockaddr_in6.sin6_addr, in6->src_addr, 16); |
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371 |
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372 dst_sockaddr.sockaddr_in6.sin6_family = AF_INET6; |
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373 dst_sockaddr.sockaddr_in6.sin6_port = 0; |
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374 memcpy(&dst_sockaddr.sockaddr_in6.sin6_addr, in6->dst_addr, 16); |
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375 |
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376 pp->src_port = ngx_proxy_protocol_parse_uint16(in6->src_port); |
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377 pp->dst_port = ngx_proxy_protocol_parse_uint16(in6->dst_port); |
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378 |
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379 socklen = sizeof(struct sockaddr_in6); |
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380 |
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381 buf += sizeof(ngx_proxy_protocol_inet6_addrs_t); |
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382 |
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383 break; |
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384 |
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385 #endif |
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386 |
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387 default: |
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388 ngx_log_debug1(NGX_LOG_DEBUG_CORE, c->log, 0, |
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389 "PROXY protocol v2 unsupported address family %ui", |
7252 | 390 family); |
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391 return end; |
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392 } |
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393 |
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394 pp->src_addr.data = ngx_pnalloc(c->pool, NGX_SOCKADDR_STRLEN); |
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395 if (pp->src_addr.data == NULL) { |
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396 return NULL; |
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397 } |
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398 |
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399 pp->src_addr.len = ngx_sock_ntop(&src_sockaddr.sockaddr, socklen, |
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400 pp->src_addr.data, NGX_SOCKADDR_STRLEN, 0); |
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401 |
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402 pp->dst_addr.data = ngx_pnalloc(c->pool, NGX_SOCKADDR_STRLEN); |
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403 if (pp->dst_addr.data == NULL) { |
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404 return NULL; |
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405 } |
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406 |
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407 pp->dst_addr.len = ngx_sock_ntop(&dst_sockaddr.sockaddr, socklen, |
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408 pp->dst_addr.data, NGX_SOCKADDR_STRLEN, 0); |
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409 |
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410 ngx_log_debug4(NGX_LOG_DEBUG_CORE, c->log, 0, |
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411 "PROXY protocol v2 src: %V %d, dst: %V %d", |
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412 &pp->src_addr, pp->src_port, &pp->dst_addr, pp->dst_port); |
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413 |
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414 if (buf < end) { |
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415 ngx_log_debug1(NGX_LOG_DEBUG_CORE, c->log, 0, |
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416 "PROXY protocol v2 %z bytes of tlv ignored", end - buf); |
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417 } |
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418 |
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419 c->proxy_protocol = pp; |
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420 |
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421 return end; |
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422 } |