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
|
/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "private-lib-core.h"
/*
* Produce Apache-compatible log string for wsi, like this:
*
* 2.31.234.19 - - [27/Mar/2016:03:22:44 +0800]
* "GET /aep-screen.png HTTP/1.1"
* 200 152987 "https://libwebsockets.org/index.html"
* "Mozilla/5.0 (Macint... Chrome/49.0.2623.87 Safari/537.36"
*
*/
extern const char * const method_names[];
static const char * const hver[] = {
"HTTP/1.0", "HTTP/1.1", "HTTP/2"
};
void
lws_prepare_access_log_info(struct lws *wsi, char *uri_ptr, int uri_len, int meth)
{
char da[64], uri[256], ta[64];
time_t t = time(NULL);
struct lws *nwsi;
const char *me;
int l = 256, m;
struct tm *ptm = NULL;
#if defined(LWS_HAVE_LOCALTIME_R)
struct tm tm;
#endif
if (!wsi->a.vhost)
return;
/* only worry about preparing it if we store it */
if (wsi->a.vhost->log_fd == (int)LWS_INVALID_FILE)
return;
if (wsi->access_log_pending)
lws_access_log(wsi);
wsi->http.access_log.header_log = lws_malloc((unsigned int)l, "access log");
if (!wsi->http.access_log.header_log)
return;
#if defined(LWS_HAVE_LOCALTIME_R)
ptm = localtime_r(&t, &tm);
#else
ptm = localtime(&t);
#endif
if (ptm)
strftime(da, sizeof(da), "%d/%b/%Y:%H:%M:%S %z", ptm);
else
strcpy(da, "01/Jan/1970:00:00:00 +0000");
#if defined(LWS_ROLE_H2)
if (wsi->mux_substream)
me = lws_hdr_simple_ptr(wsi, WSI_TOKEN_HTTP_COLON_METHOD);
else
#endif
me = method_names[meth];
if (!me)
me = "(null)";
m = uri_len;
if (m > (int)sizeof(uri) - 1)
m = sizeof(uri) - 1;
strncpy(uri, uri_ptr, (unsigned int)m);
uri[m] = '\0';
nwsi = lws_get_network_wsi(wsi);
if (nwsi->sa46_peer.sa4.sin_family)
lws_sa46_write_numeric_address(&nwsi->sa46_peer, ta, sizeof(ta));
else
strncpy(ta, "unknown", sizeof(ta));
lws_snprintf(wsi->http.access_log.header_log, (size_t)l,
"%s - - [%s] \"%s %s %s\"",
ta, da, me, uri, hver[wsi->http.request_version]);
//lwsl_notice("%s\n", wsi->http.access_log.header_log);
l = lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_USER_AGENT);
if (l) {
wsi->http.access_log.user_agent =
lws_malloc((unsigned int)l + 5, "access log");
if (!wsi->http.access_log.user_agent) {
lwsl_err("OOM getting user agent\n");
lws_free_set_NULL(wsi->http.access_log.header_log);
return;
}
wsi->http.access_log.user_agent[0] = '\0';
if (lws_hdr_copy(wsi, wsi->http.access_log.user_agent, l + 4,
WSI_TOKEN_HTTP_USER_AGENT) >= 0)
for (m = 0; m < l; m++)
if (wsi->http.access_log.user_agent[m] == '\"')
wsi->http.access_log.user_agent[m] = '\'';
}
l = lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_REFERER);
if (l) {
wsi->http.access_log.referrer = lws_malloc((unsigned int)l + 5, "referrer");
if (!wsi->http.access_log.referrer) {
lwsl_err("OOM getting referrer\n");
lws_free_set_NULL(wsi->http.access_log.user_agent);
lws_free_set_NULL(wsi->http.access_log.header_log);
return;
}
wsi->http.access_log.referrer[0] = '\0';
if (lws_hdr_copy(wsi, wsi->http.access_log.referrer,
l + 4, WSI_TOKEN_HTTP_REFERER) >= 0)
for (m = 0; m < l; m++)
if (wsi->http.access_log.referrer[m] == '\"')
wsi->http.access_log.referrer[m] = '\'';
}
wsi->access_log_pending = 1;
}
int
lws_access_log(struct lws *wsi)
{
char *p = wsi->http.access_log.user_agent, ass[512],
*p1 = wsi->http.access_log.referrer;
int l;
if (!wsi->a.vhost)
return 0;
if (wsi->a.vhost->log_fd == (int)LWS_INVALID_FILE)
return 0;
if (!wsi->access_log_pending)
return 0;
if (!wsi->http.access_log.header_log)
return 0;
if (!p)
p = "";
if (!p1)
p1 = "";
/*
* We do this in two parts to restrict an oversize referrer such that
* we will always have space left to append an empty useragent, while
* maintaining the structure of the log text
*/
l = lws_snprintf(ass, sizeof(ass) - 7, "%s %d %lu \"%s",
wsi->http.access_log.header_log,
wsi->http.access_log.response,
wsi->http.access_log.sent, p1);
if (strlen(p) > sizeof(ass) - 6 - (unsigned int)l) {
p[sizeof(ass) - 6 - (unsigned int)l] = '\0';
l--;
}
l += lws_snprintf(ass + (unsigned int)l, sizeof(ass) - 1 - (unsigned int)l, "\" \"%s\"\n", p);
ass[sizeof(ass) - 1] = '\0';
if ((int)write(wsi->a.vhost->log_fd, ass, (size_t)l) != l)
lwsl_err("Failed to write log\n");
if (wsi->http.access_log.header_log) {
lws_free(wsi->http.access_log.header_log);
wsi->http.access_log.header_log = NULL;
}
if (wsi->http.access_log.user_agent) {
lws_free(wsi->http.access_log.user_agent);
wsi->http.access_log.user_agent = NULL;
}
if (wsi->http.access_log.referrer) {
lws_free(wsi->http.access_log.referrer);
wsi->http.access_log.referrer = NULL;
}
wsi->access_log_pending = 0;
return 0;
}
|
