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 <arpa/inet.h>
21 #include <netinet/in.h>
31 # define pledge(a, b) 0
32 # define unveil(a, b) 0
39 #define GEMINI_URL_LEN (1024+3) /* URL max len + \r\n + \0 */
41 /* large enough to hold a copy of a gemini URL and still have extra room */
45 #define TEMP_FAILURE 40
47 #define BAD_REQUEST 59
53 #define SAFE_SETENV(var, val) do { \
54 const char *_tmp = (val); \
57 setenv((var), _tmp, 1); \
60 #define LOG(priority, c, fmt, ...) \
62 char buf[INET_ADDRSTRLEN]; \
63 if (inet_ntop((c)->af, &(c)->addr, \
64 buf, sizeof(buf)) == NULL) \
65 FATAL("inet_ntop: %s", strerror(errno)); \
68 "%s " fmt "\n", buf, __VA_ARGS__); \
70 syslog((priority) | LOG_DAEMON, \
71 "%s " fmt, buf, __VA_ARGS__); \
74 #define LOGE(c, fmt, ...) LOG(LOG_ERR, c, fmt, __VA_ARGS__)
75 #define LOGN(c, fmt, ...) LOG(LOG_NOTICE, c, fmt, __VA_ARGS__)
76 #define LOGI(c, fmt, ...) LOG(LOG_INFO, c, fmt, __VA_ARGS__)
77 #define LOGD(c, fmt, ...) LOG(LOG_DEBUG, c, fmt, __VA_ARGS__)
79 #define FATAL(fmt, ...) \
82 fprintf(stderr, fmt "\n", __VA_ARGS__); \
84 syslog(LOG_DAEMON | LOG_CRIT, \
101 int fd, waiting_on_child;
103 char sbuf[1024]; /* static buffer */
104 void *buf, *i; /* mmap buffer */
105 ssize_t len, off; /* mmap/static buffer */
117 struct etm { /* file extension to mime */
121 {"application/pdf", "pdf"},
123 {"image/gif", "gif"},
124 {"image/jpeg", "jpg"},
125 {"image/jpeg", "jpeg"},
126 {"image/png", "png"},
127 {"image/svg+xml", "svg"},
129 {"text/gemini", "gemini"},
130 {"text/gemini", "gmi"},
131 {"text/markdown", "markdown"},
132 {"text/markdown", "md"},
133 {"text/plain", "txt"},
139 void siginfo_handler(int);
140 int starts_with(const char*, const char*);
142 char *url_after_proto(char*);
143 char *url_start_of_request(char*);
144 int url_trim(struct client*, char*);
145 char *adjust_path(char*);
146 ssize_t filesize(int);
148 int start_reply(struct pollfd*, struct client*, int, const char*);
149 const char *path_ext(const char*);
150 const char *mime(const char*);
151 int check_path(struct client*, const char*, int*);
152 int check_for_cgi(char *, char*, struct pollfd*, struct client*);
153 int open_file(char*, char*, struct pollfd*, struct client*);
154 int start_cgi(const char*, const char*, const char*, struct pollfd*, struct client*);
155 void cgi_setpoll_on_child(struct pollfd*, struct client*);
156 void cgi_setpoll_on_client(struct pollfd*, struct client*);
157 void handle_cgi(struct pollfd*, struct client*);
158 void send_file(char*, char*, struct pollfd*, struct client*);
159 void send_dir(char*, struct pollfd*, struct client*);
160 void handle(struct pollfd*, struct client*);
162 void mark_nonblock(int);
164 void do_accept(int, struct tls*, struct pollfd*, struct client*);
165 void goodbye(struct pollfd*, struct client*);
166 void loop(struct tls*, int);
168 void usage(const char*);