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8774c31b FT |
1 | /* |
2 | ashd - A Sane HTTP Daemon | |
3 | Copyright (C) 2008 Fredrik Tolf <fredrik@dolda2000.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 3 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 | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | ||
19 | #include <stdlib.h> | |
20 | #include <unistd.h> | |
21 | #include <stdio.h> | |
22 | #include <sys/socket.h> | |
23 | #include <netinet/in.h> | |
24 | #include <arpa/inet.h> | |
25 | #include <errno.h> | |
26 | #include <string.h> | |
27 | ||
28 | #ifdef HAVE_CONFIG_H | |
29 | #include <config.h> | |
30 | #endif | |
31 | #include <utils.h> | |
32 | #include <req.h> | |
33 | #include <mt.h> | |
34 | #include <mtio.h> | |
35 | #include <log.h> | |
36 | ||
37 | #include "htparser.h" | |
38 | ||
c063c3b8 FT |
39 | struct tcpport { |
40 | int fd; | |
41 | int sport; | |
42 | }; | |
43 | ||
8774c31b FT |
44 | struct tcpconn { |
45 | struct sockaddr_storage name; | |
c063c3b8 | 46 | struct tcpport *port; |
8774c31b FT |
47 | }; |
48 | ||
6ca53b2e | 49 | int listensock4(int port) |
8774c31b FT |
50 | { |
51 | struct sockaddr_in name; | |
52 | int fd; | |
53 | int valbuf; | |
54 | ||
55 | memset(&name, 0, sizeof(name)); | |
56 | name.sin_family = AF_INET; | |
57 | name.sin_port = htons(port); | |
58 | if((fd = socket(PF_INET, SOCK_STREAM, 0)) < 0) | |
59 | return(-1); | |
60 | valbuf = 1; | |
61 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &valbuf, sizeof(valbuf)); | |
62 | if(bind(fd, (struct sockaddr *)&name, sizeof(name))) { | |
63 | close(fd); | |
64 | return(-1); | |
65 | } | |
66 | if(listen(fd, 16) < 0) { | |
67 | close(fd); | |
68 | return(-1); | |
69 | } | |
70 | return(fd); | |
71 | } | |
72 | ||
6ca53b2e | 73 | int listensock6(int port) |
8774c31b FT |
74 | { |
75 | struct sockaddr_in6 name; | |
76 | int fd; | |
77 | int valbuf; | |
78 | ||
79 | memset(&name, 0, sizeof(name)); | |
80 | name.sin6_family = AF_INET6; | |
81 | name.sin6_port = htons(port); | |
82 | if((fd = socket(PF_INET6, SOCK_STREAM, 0)) < 0) | |
83 | return(-1); | |
84 | valbuf = 1; | |
85 | setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &valbuf, sizeof(valbuf)); | |
86 | if(bind(fd, (struct sockaddr *)&name, sizeof(name))) { | |
87 | close(fd); | |
88 | return(-1); | |
89 | } | |
90 | if(listen(fd, 16) < 0) { | |
91 | close(fd); | |
92 | return(-1); | |
93 | } | |
94 | return(fd); | |
95 | } | |
96 | ||
97 | static int initreq(struct conn *conn, struct hthead *req) | |
98 | { | |
99 | struct tcpconn *tcp = conn->pdata; | |
100 | char nmbuf[256]; | |
101 | ||
102 | if(tcp->name.ss_family == AF_INET) { | |
103 | headappheader(req, "X-Ash-Address", inet_ntop(AF_INET, &((struct sockaddr_in *)&tcp->name)->sin_addr, nmbuf, sizeof(nmbuf))); | |
104 | headappheader(req, "X-Ash-Port", sprintf3("%i", ntohs(((struct sockaddr_in *)&tcp->name)->sin_port))); | |
105 | } else if(tcp->name.ss_family == AF_INET6) { | |
106 | headappheader(req, "X-Ash-Address", inet_ntop(AF_INET6, &((struct sockaddr_in6 *)&tcp->name)->sin6_addr, nmbuf, sizeof(nmbuf))); | |
107 | headappheader(req, "X-Ash-Port", sprintf3("%i", ntohs(((struct sockaddr_in6 *)&tcp->name)->sin6_port))); | |
108 | } | |
c063c3b8 | 109 | headappheader(req, "X-Ash-Server-Port", sprintf3("%i", tcp->port->sport)); |
46e66302 | 110 | headappheader(req, "X-Ash-Protocol", "http"); |
8774c31b FT |
111 | return(0); |
112 | } | |
113 | ||
114 | void servetcp(struct muth *muth, va_list args) | |
115 | { | |
116 | vavar(int, fd); | |
117 | vavar(struct sockaddr_storage, name); | |
c063c3b8 | 118 | vavar(struct tcpport *, stcp); |
8774c31b | 119 | FILE *in; |
c063c3b8 FT |
120 | struct conn conn; |
121 | struct tcpconn tcp; | |
8774c31b | 122 | |
c063c3b8 FT |
123 | memset(&conn, 0, sizeof(conn)); |
124 | memset(&tcp, 0, sizeof(tcp)); | |
8774c31b | 125 | in = mtstdopen(fd, 1, 60, "r+"); |
c063c3b8 FT |
126 | conn.pdata = &tcp; |
127 | conn.initreq = initreq; | |
128 | tcp.name = name; | |
129 | tcp.port = stcp; | |
130 | serve(in, &conn); | |
8774c31b FT |
131 | } |
132 | ||
133 | static void listenloop(struct muth *muth, va_list args) | |
134 | { | |
c063c3b8 | 135 | vavar(struct tcpport *, tcp); |
8774c31b FT |
136 | int ns; |
137 | struct sockaddr_storage name; | |
138 | socklen_t namelen; | |
139 | ||
140 | while(1) { | |
141 | namelen = sizeof(name); | |
c063c3b8 FT |
142 | block(tcp->fd, EV_READ, 0); |
143 | ns = accept(tcp->fd, (struct sockaddr *)&name, &namelen); | |
8774c31b FT |
144 | if(ns < 0) { |
145 | flog(LOG_ERR, "accept: %s", strerror(errno)); | |
146 | goto out; | |
147 | } | |
c063c3b8 | 148 | mustart(servetcp, ns, name, tcp); |
8774c31b FT |
149 | } |
150 | ||
151 | out: | |
c063c3b8 FT |
152 | close(tcp->fd); |
153 | free(tcp); | |
8774c31b FT |
154 | } |
155 | ||
156 | void handleplain(int argc, char **argp, char **argv) | |
157 | { | |
158 | int port, fd; | |
159 | int i; | |
c063c3b8 | 160 | struct tcpport *tcp; |
8774c31b FT |
161 | |
162 | port = 80; | |
163 | for(i = 0; i < argc; i++) { | |
164 | if(!strcmp(argp[i], "help")) { | |
165 | printf("plain handler parameters:\n"); | |
6ca53b2e FT |
166 | printf("\tport=TCP-PORT [80]\n"); |
167 | printf("\t\tThe TCP port to listen on.\n"); | |
8774c31b FT |
168 | exit(0); |
169 | } else if(!strcmp(argp[i], "port")) { | |
170 | port = atoi(argv[i]); | |
171 | } else { | |
172 | flog(LOG_ERR, "unknown parameter `%s' to plain handler", argp[i]); | |
173 | exit(1); | |
174 | } | |
175 | } | |
176 | if((fd = listensock6(port)) < 0) { | |
177 | flog(LOG_ERR, "could not listen on IPv6 (port %i): %s", port, strerror(errno)); | |
178 | exit(1); | |
179 | } | |
c063c3b8 FT |
180 | omalloc(tcp); |
181 | tcp->fd = fd; | |
182 | tcp->sport = port; | |
183 | mustart(listenloop, tcp); | |
8774c31b FT |
184 | if((fd = listensock4(port)) < 0) { |
185 | if(errno != EADDRINUSE) { | |
186 | flog(LOG_ERR, "could not listen on IPv4 (port %i): %s", port, strerror(errno)); | |
187 | exit(1); | |
188 | } | |
189 | } else { | |
41fe6c39 FT |
190 | omalloc(tcp); |
191 | tcp->fd = fd; | |
192 | tcp->sport = port; | |
193 | mustart(listenloop, tcp); | |
8774c31b FT |
194 | } |
195 | } |