1 /*
2  * Copyright 2008-2012 Niels Provos and Nick Mathewson
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  * 4. The name of the author may not be used to endorse or promote products
13  *    derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  */
27 
28 #include <sys/types.h>
29 #include <sys/stat.h>
30 #ifdef _WIN32
31 #include <winsock2.h>
32 #else
33 #include <sys/socket.h>
34 #include <sys/resource.h>
35 #include <sys/time.h>
36 #include <unistd.h>
37 #endif
38 #include <fcntl.h>
39 #include <signal.h>
40 #include <stdlib.h>
41 #include <stdio.h>
42 #include <string.h>
43 #include <errno.h>
44 
45 #include "event2/event.h"
46 #include "event2/buffer.h"
47 #include "event2/util.h"
48 #include "event2/http.h"
49 #include "event2/thread.h"
50 
51 static void http_basic_cb(struct evhttp_request *req, void *arg);
52 
53 static char *content;
54 static size_t content_len = 0;
55 
56 static void
57 http_basic_cb(struct evhttp_request *req, void *arg)
58 {
59 	struct evbuffer *evb = evbuffer_new();
60 
61 	evbuffer_add(evb, content, content_len);
62 
63 	/* allow sending of an empty reply */
64 	evhttp_send_reply(req, HTTP_OK, "Everything is fine", evb);
65 
66 	evbuffer_free(evb);
67 }
68 
69 #if LIBEVENT_VERSION_NUMBER >= 0x02000200
70 static void
71 http_ref_cb(struct evhttp_request *req, void *arg)
72 {
73 	struct evbuffer *evb = evbuffer_new();
74 
75 	evbuffer_add_reference(evb, content, content_len, NULL, NULL);
76 
77 	/* allow sending of an empty reply */
78 	evhttp_send_reply(req, HTTP_OK, "Everything is fine", evb);
79 
80 	evbuffer_free(evb);
81 }
82 #endif
83 
84 int
85 main(int argc, char **argv)
86 {
87 	struct event_config *cfg = event_config_new();
88 	struct event_base *base;
89 	struct evhttp *http;
90 	int i;
91 	int c;
92 	int use_iocp = 0;
93 	unsigned short port = 8080;
94 	char *endptr = NULL;
95 
96 #ifdef _WIN32
97 	WSADATA WSAData;
98 	WSAStartup(0x101, &WSAData);
99 #else
100 	if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
101 		return (1);
102 #endif
103 
104 	for (i = 1; i < argc; ++i) {
105 		if (*argv[i] != '-')
106 			continue;
107 
108 		c = argv[i][1];
109 
110 		if ((c == 'p' || c == 'l') && i + 1 >= argc) {
111 			fprintf(stderr, "-%c requires argument.\n", c);
112 			exit(1);
113 		}
114 
115 		switch (c) {
116 		case 'p':
117 			if (i+1 >= argc || !argv[i+1]) {
118 				fprintf(stderr, "Missing port\n");
119 				exit(1);
120 			}
121 			port = (int)strtol(argv[i+1], &endptr, 10);
122 			if (*endptr != '\0') {
123 				fprintf(stderr, "Bad port\n");
124 				exit(1);
125 			}
126 			break;
127 		case 'l':
128 			if (i+1 >= argc || !argv[i+1]) {
129 				fprintf(stderr, "Missing content length\n");
130 				exit(1);
131 			}
132 			content_len = (size_t)strtol(argv[i+1], &endptr, 10);
133 			if (*endptr != '\0' || content_len == 0) {
134 				fprintf(stderr, "Bad content length\n");
135 				exit(1);
136 			}
137 			break;
138 #ifdef _WIN32
139 		case 'i':
140 			use_iocp = 1;
141 			evthread_use_windows_threads();
142 			event_config_set_flag(cfg,EVENT_BASE_FLAG_STARTUP_IOCP);
143 			break;
144 #endif
145 		default:
146 			fprintf(stderr, "Illegal argument \"%c\"\n", c);
147 			exit(1);
148 		}
149 	}
150 
151 	base = event_base_new_with_config(cfg);
152 	if (!base) {
153 		fprintf(stderr, "creating event_base failed. Exiting.\n");
154 		return 1;
155 	}
156 
157 	http = evhttp_new(base);
158 
159 	content = malloc(content_len);
160 	if (content == NULL) {
161 		fprintf(stderr, "Cannot allocate content\n");
162 		exit(1);
163 	} else {
164 		int i = 0;
165 		for (i = 0; i < (int)content_len; ++i)
166 			content[i] = (i & 255);
167 	}
168 
169 	evhttp_set_cb(http, "/ind", http_basic_cb, NULL);
170 	fprintf(stderr, "/ind - basic content (memory copy)\n");
171 
172 	evhttp_set_cb(http, "/ref", http_ref_cb, NULL);
173 	fprintf(stderr, "/ref - basic content (reference)\n");
174 
175 	fprintf(stderr, "Serving %d bytes on port %d using %s\n",
176 	    (int)content_len, port,
177 	    use_iocp? "IOCP" : event_base_get_method(base));
178 
179 	evhttp_bind_socket(http, "0.0.0.0", port);
180 
181 #ifdef _WIN32
182 	if (use_iocp) {
183 		struct timeval tv={99999999,0};
184 		event_base_loopexit(base, &tv);
185 	}
186 #endif
187 	event_base_dispatch(base);
188 
189 #ifdef _WIN32
190 	WSACleanup();
191 #endif
192 
193 	/* NOTREACHED */
194 	return (0);
195 }
196