/
proxy_connect_rewrite_101504.patch
306 lines (289 loc) · 9.28 KB
/
proxy_connect_rewrite_101504.patch
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index 5e7152f0..4bdfd2e3 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -940,6 +940,14 @@ ngx_http_core_find_config_phase(ngx_http_request_t *r,
r->content_handler = NULL;
r->uri_changed = 0;
+#if (NGX_HTTP_PROXY_CONNECT)
+ if (r->method == NGX_HTTP_CONNECT) {
+ ngx_http_update_location_config(r);
+ r->phase_handler++;
+ return NGX_AGAIN;
+ }
+#endif
+
rc = ngx_http_core_find_location(r);
if (rc == NGX_ERROR) {
diff --git a/src/http/ngx_http_parse.c b/src/http/ngx_http_parse.c
index d9a1dbed..35df8fc8 100644
--- a/src/http/ngx_http_parse.c
+++ b/src/http/ngx_http_parse.c
@@ -107,6 +107,14 @@ ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
enum {
sw_start = 0,
sw_method,
+#if (NGX_HTTP_PROXY_CONNECT)
+ sw_spaces_before_connect_host,
+ sw_connect_host_start,
+ sw_connect_host,
+ sw_connect_host_end,
+ sw_connect_host_ip_literal,
+ sw_connect_port,
+#endif
sw_spaces_before_uri,
sw_schema,
sw_schema_slash,
@@ -246,6 +254,13 @@ ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
r->method = NGX_HTTP_OPTIONS;
}
+#if (NGX_HTTP_PROXY_CONNECT)
+ if (ngx_str7_cmp(m, 'C', 'O', 'N', 'N', 'E', 'C', 'T', ' '))
+ {
+ r->method = NGX_HTTP_CONNECT;
+ }
+#endif
+
break;
case 8:
@@ -267,6 +282,13 @@ ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
}
state = sw_spaces_before_uri;
+
+#if (NGX_HTTP_PROXY_CONNECT)
+ if (r->method == NGX_HTTP_CONNECT) {
+ state = sw_spaces_before_connect_host;
+ }
+#endif
+
break;
}
@@ -276,6 +298,111 @@ ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
break;
+#if (NGX_HTTP_PROXY_CONNECT)
+ case sw_spaces_before_connect_host:
+
+ if (ch == ' ') {
+ break;
+ }
+
+ /* fall through */
+
+ case sw_connect_host_start:
+
+ r->connect_host_start = p;
+
+ if (ch == '[') {
+ state = sw_connect_host_ip_literal;
+ break;
+ }
+
+ state = sw_connect_host;
+
+ /* fall through */
+
+ case sw_connect_host:
+
+ c = (u_char) (ch | 0x20);
+ if (c >= 'a' && c <= 'z') {
+ break;
+ }
+
+ if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') {
+ break;
+ }
+
+ /* fall through */
+
+ case sw_connect_host_end:
+
+ r->connect_host_end = p;
+
+ switch (ch) {
+ case ':':
+ state = sw_connect_port;
+ break;
+ default:
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+ break;
+
+ case sw_connect_host_ip_literal:
+
+ if (ch >= '0' && ch <= '9') {
+ break;
+ }
+
+ c = (u_char) (ch | 0x20);
+ if (c >= 'a' && c <= 'z') {
+ break;
+ }
+
+ switch (ch) {
+ case ':':
+ break;
+ case ']':
+ state = sw_connect_host_end;
+ break;
+ case '-':
+ case '.':
+ case '_':
+ case '~':
+ /* unreserved */
+ break;
+ case '!':
+ case '$':
+ case '&':
+ case '\'':
+ case '(':
+ case ')':
+ case '*':
+ case '+':
+ case ',':
+ case ';':
+ case '=':
+ /* sub-delims */
+ break;
+ default:
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+ break;
+
+ case sw_connect_port:
+ if (ch >= '0' && ch <= '9') {
+ break;
+ }
+
+ switch (ch) {
+ case ' ':
+ r->connect_port_end = p;
+ state = sw_host_http_09;
+ break;
+ default:
+ return NGX_HTTP_PARSE_INVALID_REQUEST;
+ }
+ break;
+#endif
+
/* space* before URI */
case sw_spaces_before_uri:
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 7dd28b8c..259f17c7 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -991,6 +991,53 @@ ngx_http_process_request_line(ngx_event_t *rev)
break;
}
+#if (NGX_HTTP_PROXY_CONNECT)
+
+ if (r->connect_host_start && r->connect_host_end) {
+
+ host.len = r->connect_host_end - r->connect_host_start;
+ host.data = r->connect_host_start;
+ rc = ngx_http_validate_host(&host, r->pool, 0);
+
+ if (rc == NGX_DECLINED) {
+ ngx_log_error(NGX_LOG_INFO, c->log, 0,
+ "client sent invalid host in request line");
+ ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+ return;
+ }
+
+ if (rc == NGX_ERROR) {
+ ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+ return;
+ }
+
+ r->connect_host = host;
+
+ if (!r->connect_port_end) {
+ ngx_log_error(NGX_LOG_INFO, c->log, 0,
+ "client sent no port in request line");
+ ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+ return;
+ }
+
+ r->connect_port.data = r->connect_host_end + 1;
+ r->connect_port.len = r->connect_port_end
+ - r->connect_host_end - 1;
+
+ ngx_int_t port;
+
+ port = ngx_atoi(r->connect_port.data, r->connect_port.len);
+ if (port == NGX_ERROR || port < 1 || port > 65535) {
+ ngx_log_error(NGX_LOG_INFO, c->log, 0,
+ "client sent invalid port in request line");
+ ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
+ return;
+ }
+
+ r->connect_port_n = port;
+ }
+#endif
+
if (r->schema_end) {
r->schema.len = r->schema_end - r->schema_start;
r->schema.data = r->schema_start;
@@ -1570,6 +1617,19 @@ ngx_http_alloc_large_header_buffer(ngx_http_request_t *r,
r->schema_end = new + (r->schema_end - old);
}
+#if (NGX_HTTP_PROXY_CONNECT)
+ if (r->connect_host_start) {
+ r->connect_host_start = new + (r->connect_host_start - old);
+ if (r->connect_host_end) {
+ r->connect_host_end = new + (r->connect_host_end - old);
+ }
+
+ if (r->connect_port_end) {
+ r->connect_port_end = new + (r->connect_port_end - old);
+ }
+ }
+#endif
+
if (r->host_start) {
r->host_start = new + (r->host_start - old);
if (r->host_end) {
diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index fce70efe..7035407d 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -42,6 +42,10 @@
#define NGX_HTTP_PATCH 0x4000
#define NGX_HTTP_TRACE 0x8000
+#if (NGX_HTTP_PROXY_CONNECT)
+#define NGX_HTTP_CONNECT 0x10000
+#endif
+
#define NGX_HTTP_CONNECTION_CLOSE 1
#define NGX_HTTP_CONNECTION_KEEP_ALIVE 2
@@ -410,6 +414,15 @@ struct ngx_http_request_s {
ngx_str_t exten;
ngx_str_t unparsed_uri;
+#if (NGX_HTTP_PROXY_CONNECT)
+ ngx_str_t connect_host;
+ ngx_str_t connect_port;
+ in_port_t connect_port_n;
+ u_char *connect_host_start;
+ u_char *connect_host_end;
+ u_char *connect_port_end;
+#endif
+
ngx_str_t method_name;
ngx_str_t http_protocol;
ngx_str_t schema;
diff --git a/src/http/ngx_http_variables.c b/src/http/ngx_http_variables.c
index 31321b29..8af06e52 100644
--- a/src/http/ngx_http_variables.c
+++ b/src/http/ngx_http_variables.c
@@ -161,6 +161,14 @@ static ngx_int_t ngx_http_variable_time_local(ngx_http_request_t *r,
static ngx_http_variable_t ngx_http_core_variables[] = {
+#if (NGX_HTTP_PROXY_CONNECT)
+ { ngx_string("connect_host"), NULL, ngx_http_variable_request,
+ offsetof(ngx_http_request_t, connect_host), 0, 0 },
+
+ { ngx_string("connect_port"), NULL, ngx_http_variable_request,
+ offsetof(ngx_http_request_t, connect_port), 0, 0 },
+#endif
+
{ ngx_string("http_host"), NULL, ngx_http_variable_header,
offsetof(ngx_http_request_t, headers_in.host), 0, 0 },