/[jscoverage]/trunk/http-server.c
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Revision 134 - (show annotations)
Thu Jun 19 05:54:02 2008 UTC (10 years, 4 months ago) by siliconforks
File MIME type: text/plain
File size: 6500 byte(s)
Typo fixes.

1 /*
2 http-server.c - generic HTTP server
3 Copyright (C) 2008 siliconforks.com
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #include <config.h>
21
22 #include "http-server.h"
23
24 #include <stdarg.h>
25 #include <string.h>
26
27 #ifdef HAVE_PTHREAD_H
28 #include <pthread.h>
29 #endif
30
31 #ifdef __MINGW32__
32 #include <process.h>
33 #endif
34
35 #include "util.h"
36
37 #ifdef __MINGW32__
38 typedef void ThreadRoutineReturnType;
39 #define THREAD_ROUTINE_RETURN return
40 #else
41 typedef void * ThreadRoutineReturnType;
42 #define THREAD_ROUTINE_RETURN return NULL
43 #endif
44
45 struct HTTPServer {
46 char * ip_address;
47 uint16_t port;
48 HTTPServerHandler handler;
49 SOCKET s;
50 };
51
52 struct HTTPServerConnection {
53 HTTPConnection * connection;
54 struct HTTPServer * server;
55 };
56
57 static bool is_shutdown = false;
58 #ifdef __MINGW32__
59 CRITICAL_SECTION shutdown_mutex;
60 #define LOCK EnterCriticalSection
61 #define UNLOCK LeaveCriticalSection
62 #else
63 pthread_mutex_t shutdown_mutex = PTHREAD_MUTEX_INITIALIZER;
64 #define LOCK pthread_mutex_lock
65 #define UNLOCK pthread_mutex_unlock
66 #endif
67
68 static ThreadRoutineReturnType handle_connection(void * p) {
69 struct HTTPServerConnection * connection = p;
70 uint16_t port = connection->server->port;
71
72 HTTPExchange * exchange = HTTPExchange_new(connection->connection);
73 if (HTTPExchange_read_request_headers(exchange) == 0) {
74 connection->server->handler(exchange);
75 }
76 else {
77 HTTPExchange_set_status_code(exchange, 400);
78 const char * message = "Could not parse request headers\n";
79 if (HTTPExchange_write_response(exchange, message, strlen(message)) != 0) {
80 HTTPServer_log_err("Warning: error writing to client\n");
81 }
82 }
83 if (HTTPExchange_flush_response(exchange) != 0) {
84 HTTPServer_log_err("Warning: error writing to client\n");
85 }
86 HTTPExchange_delete(exchange);
87 if (HTTPConnection_delete(connection->connection) != 0) {
88 HTTPServer_log_err("Warning: error closing connection to client\n");
89 }
90 free(connection);
91
92 /* HACK: make connection to server to force accept() to return */
93 LOCK(&shutdown_mutex);
94 if (is_shutdown) {
95 SOCKET s = socket(PF_INET, SOCK_STREAM, 0);
96 if (s == INVALID_SOCKET) {
97 HTTPServer_log_err("Warning: error creating socket\n");
98 }
99 else {
100 struct sockaddr_in a;
101 a.sin_family = AF_INET;
102 a.sin_port = htons(port);
103 a.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
104 if (connect(s, (struct sockaddr *) &a, sizeof(a)) == -1) {
105 HTTPServer_log_err("Warning: error connecting to server\n");
106 }
107 closesocket(s);
108 }
109 }
110 UNLOCK(&shutdown_mutex);
111
112 THREAD_ROUTINE_RETURN;
113 }
114
115 static struct HTTPServer * HTTPServer_new(const char * ip_address, uint16_t port, HTTPServerHandler handler) {
116 struct HTTPServer * result = xmalloc(sizeof(struct HTTPServer));
117 if (ip_address == NULL) {
118 result->ip_address = NULL;
119 }
120 else {
121 result->ip_address = xstrdup(ip_address);
122 }
123 result->port = port;
124 result->handler = handler;
125 result->s = -1;
126 return result;
127 }
128
129 static void HTTPServer_delete(struct HTTPServer * server) {
130 free(server->ip_address);
131 closesocket(server->s);
132 free(server);
133 }
134
135 void HTTPServer_run(const char * ip_address, uint16_t port, HTTPServerHandler handler) {
136 struct HTTPServer * server = HTTPServer_new(ip_address, port, handler);
137
138 #ifdef __MINGW32__
139 WSADATA data;
140 if (WSAStartup(MAKEWORD(1, 1), &data) != 0) {
141 fatal("could not start Winsock");
142 }
143 InitializeCriticalSection(&shutdown_mutex);
144 #endif
145
146 server->s = socket(PF_INET, SOCK_STREAM, 0);
147 if (server->s == INVALID_SOCKET) {
148 fatal("could not create socket");
149 }
150
151 /* http://hea-www.harvard.edu/~fine/Tech/addrinuse.html */
152 int optval = 1;
153 setsockopt(server->s, SOL_SOCKET, SO_REUSEADDR, (const char *) &optval, sizeof(optval));
154
155 struct sockaddr_in a;
156 a.sin_family = AF_INET;
157 a.sin_port = htons(server->port);
158 if (server->ip_address == NULL) {
159 /*
160 a.sin_addr.s_addr = htonl(INADDR_ANY);
161 */
162 a.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
163 }
164 else {
165 if (inet_aton(server->ip_address, &(a.sin_addr)) == 0) {
166 closesocket(server->s);
167 fatal("invalid address: %s", server->ip_address);
168 }
169 }
170
171 if (bind(server->s, (struct sockaddr *) &a, sizeof(a)) == -1) {
172 closesocket(server->s);
173 fatal("could not bind to address");
174 }
175
176 if (listen(server->s, 5) == -1) {
177 closesocket(server->s);
178 fatal("could not listen for connections");
179 }
180
181 for (;;) {
182 struct sockaddr_in client_address;
183 size_t client_address_size = sizeof(client_address);
184 SOCKET s = accept(server->s, (struct sockaddr *) &client_address, &client_address_size);
185 if (s == INVALID_SOCKET) {
186 HTTPServer_log_err("Warning: could not accept client connection\n");
187 continue;
188 }
189
190 LOCK(&shutdown_mutex);
191 if (is_shutdown) {
192 closesocket(s);
193 break;
194 }
195 UNLOCK(&shutdown_mutex);
196
197 struct HTTPServerConnection * connection = xmalloc(sizeof(struct HTTPServerConnection));
198 connection->server = server;
199 connection->connection = HTTPConnection_new_server(s);
200
201 #ifdef __MINGW32__
202 unsigned long thread = _beginthread(handle_connection, 0, connection);
203 #else
204 pthread_t thread;
205 pthread_attr_t a;
206 pthread_attr_init(&a);
207 pthread_attr_setdetachstate(&a, PTHREAD_CREATE_DETACHED);
208 pthread_create(&thread, &a, handle_connection, connection);
209 pthread_attr_destroy(&a);
210 #endif
211 }
212
213 HTTPServer_delete(server);
214 }
215
216 void HTTPServer_shutdown(void) {
217 LOCK(&shutdown_mutex);
218 is_shutdown = true;
219 UNLOCK(&shutdown_mutex);
220 }
221
222 void HTTPServer_log_out(const char * format, ...) {
223 va_list a;
224 va_start(a, format);
225 vfprintf(stdout, format, a);
226 va_end(a);
227 fflush(stdout);
228 }
229
230 void HTTPServer_log_err(const char * format, ...) {
231 va_list a;
232 va_start(a, format);
233 vfprintf(stderr, format, a);
234 va_end(a);
235 fflush(stderr);
236 }

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