2 * Copyright (c) 2020 Omar Polo <op@omarpolo.com>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <sys/socket.h>
21 #include <sys/types.h>
23 #include <arpa/inet.h>
24 #include <netinet/in.h>
40 #define GEMINI_URL_LEN (1024+3) /* URL max len + \r\n + \0 */
42 /* large enough to hold a copy of a gemini URL and still have extra room */
46 #define TEMP_REDIRECT 30
47 #define TEMP_FAILURE 40
49 #define PROXY_REFUSED 53
50 #define BAD_REQUEST 59
57 #define LOGE(c, fmt, ...) logs(LOG_ERR, c, fmt, __VA_ARGS__)
58 #define LOGW(c, fmt, ...) logs(LOG_WARNING, c, fmt, __VA_ARGS__)
59 #define LOGN(c, fmt, ...) logs(LOG_NOTICE, c, fmt, __VA_ARGS__)
60 #define LOGI(c, fmt, ...) logs(LOG_INFO, c, fmt, __VA_ARGS__)
61 #define LOGD(c, fmt, ...) logs(LOG_DEBUG, c, fmt, __VA_ARGS__)
68 int auto_index; /* 0 auto, -1 off, 1 on */
78 struct location locations[LOCLEN];
81 extern struct vhost hosts[HOSTSLEN];
83 struct etm { /* extension to mime */
102 extern struct conf conf;
133 char req[GEMINI_URL_LEN];
138 int fd, waiting_on_child;
139 char sbuf[1024]; /* static buffer */
140 void *buf, *i; /* mmap buffer */
141 ssize_t len, off; /* mmap/static buffer */
143 struct sockaddr_storage addr;
144 struct vhost *host; /* host she's talking to */
156 __attribute__((format (printf, 1, 2)))
157 __attribute__((__noreturn__))
158 void fatal(const char*, ...);
160 __attribute__((format (printf, 3, 4)))
161 void logs(int, struct client*, const char*, ...);
162 void log_request(struct client*, char*, size_t);
164 void sig_handler(int);
165 int starts_with(const char*, const char*);
166 int ends_with(const char*, const char*);
167 ssize_t filesize(int);
168 char *absolutify_path(const char*);
169 void yyerror(const char*);
170 int parse_portno(const char*);
171 void parse_conf(const char*);
172 void load_vhosts(struct tls_config*);
173 int make_socket(int, int);
174 int listener_main(void);
175 void init_config(void);
176 void usage(const char*);
178 /* provided by lex/yacc */
181 extern int yyparse(void);
182 extern int yylex(void);
185 void init_mime(struct mime*);
186 void add_mime(struct mime*, const char*, const char*);
187 void load_default_mime(struct mime*);
188 const char *mime(struct vhost*, const char*);
191 const char *vhost_lang(struct vhost*, const char*);
192 const char *vhost_default_mime(struct vhost*, const char*);
193 const char *vhost_index(struct vhost*, const char*);
194 int vhost_auto_index(struct vhost*, const char*);
195 int check_path(struct client*, const char*, int*);
196 void open_file(struct pollfd*, struct client*);
197 void load_file(struct pollfd*, struct client*);
198 void check_for_cgi(char *, char*, struct pollfd*, struct client*);
199 void mark_nonblock(int);
200 void handle_handshake(struct pollfd*, struct client*);
201 void handle_open_conn(struct pollfd*, struct client*);
202 void start_reply(struct pollfd*, struct client*, int, const char*);
203 void start_cgi(const char*, const char*, const char*, struct pollfd*, struct client*);
204 void send_file(struct pollfd*, struct client*);
205 void open_dir(struct pollfd*, struct client*);
206 void redirect_canonical_dir(struct pollfd*, struct client*);
207 int read_next_dir_entry(struct client*);
208 void send_directory_listing(struct pollfd*, struct client*);
209 void cgi_poll_on_child(struct pollfd*, struct client*);
210 void cgi_poll_on_client(struct pollfd*, struct client*);
211 void handle_cgi(struct pollfd*, struct client*);
212 void close_conn(struct pollfd*, struct client*);
213 void do_accept(int, struct tls*, struct pollfd*, struct client*);
214 void handle(struct pollfd*, struct client*);
215 void loop(struct tls*, int, int);
218 int send_string(int, const char*);
219 int recv_string(int, char**);
220 int send_vhost(int, struct vhost*);
221 int recv_vhost(int, struct vhost**);
222 int send_fd(int, int);
224 int executor_main(int);
230 int valid_multibyte_utf8(struct parser*);
233 int parse_iri(char*, struct iri*, const char**);
234 int trim_req_iri(char*);