mirror of
https://github.com/omar-polo/gmid.git
synced 2024-09-03 10:07:20 +02:00
968 lines
18 KiB
C
968 lines
18 KiB
C
/*
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* Copyright (c) 2020 Omar Polo <op@omarpolo.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/mman.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <assert.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <tls.h>
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#include <unistd.h>
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#ifndef __OpenBSD__
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# define pledge(a, b) 0
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# define unveil(a, b) 0
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#endif /* __OpenBSD__ */
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#ifndef INFTIM
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# define INFTIM -1
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#endif /* INFTIM */
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#define GEMINI_URL_LEN (1024+3) /* URL max len + \r\n + \0 */
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/* large enough to hold a copy of a gemini URL and still have extra room */
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#define PATHBUF 2048
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#define SUCCESS 20
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#define TEMP_FAILURE 40
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#define NOT_FOUND 51
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#define BAD_REQUEST 59
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#ifndef MAX_USERS
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#define MAX_USERS 64
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#endif
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enum {
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S_OPEN,
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S_INITIALIZING,
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S_SENDING,
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S_CLOSING,
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};
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struct client {
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struct tls *ctx;
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int state;
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int code;
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const char *meta;
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int fd, waiting_on_child;
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pid_t child;
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char sbuf[1024]; /* static buffer */
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void *buf, *i; /* mmap buffer */
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ssize_t len, off; /* mmap/static buffer */
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int af;
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struct in_addr addr;
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};
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struct etm { /* file extension to mime */
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const char *mime;
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const char *ext;
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} filetypes[] = {
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{"application/pdf", "pdf"},
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{"image/gif", "gif"},
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{"image/jpeg", "jpg"},
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{"image/jpeg", "jpeg"},
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{"image/png", "png"},
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{"image/svg+xml", "svg"},
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{"text/gemini", "gemini"},
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{"text/gemini", "gmi"},
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{"text/markdown", "markdown"},
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{"text/markdown", "md"},
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{"text/plain", "txt"},
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{"text/xml", "xml"},
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{NULL, NULL}
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};
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#define LOG(c, fmt, ...) \
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do { \
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char buf[INET_ADDRSTRLEN]; \
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if (inet_ntop((c)->af, &(c)->addr, buf, sizeof(buf)) == NULL) \
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err(1, "inet_ntop"); \
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dprintf(logfd, "[%s] " fmt "\n", buf, __VA_ARGS__); \
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} while (0)
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const char *dir;
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int dirfd, logfd;
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int cgi;
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int connected_clients;
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void siginfo_handler(int);
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char *url_after_proto(char*);
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char *url_start_of_request(char*);
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int url_trim(struct client*, char*);
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char *adjust_path(char*);
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int path_isdir(char*);
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ssize_t filesize(int);
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int start_reply(struct pollfd*, struct client*, int, const char*);
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const char *path_ext(const char*);
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const char *mime(const char*);
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int open_file(char*, char*, struct pollfd*, struct client*);
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void start_cgi(const char*, const char*, struct pollfd*, struct client*);
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void cgi_setpoll_on_child(struct pollfd*, struct client*);
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void cgi_setpoll_on_client(struct pollfd*, struct client*);
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void handle_cgi(struct pollfd*, struct client*);
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void send_file(char*, char*, struct pollfd*, struct client*);
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void send_dir(char*, struct pollfd*, struct client*);
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void handle(struct pollfd*, struct client*);
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void mark_nonblock(int);
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int make_soket(int);
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void do_accept(int, struct tls*, struct pollfd*, struct client*);
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void goodbye(struct pollfd*, struct client*);
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void loop(struct tls*, int);
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void usage(const char*);
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void
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siginfo_handler(int sig)
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{
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(void)sig;
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}
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char *
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url_after_proto(char *url)
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{
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char *s;
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const char *proto = "gemini";
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const char *marker = "://";
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size_t i;
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/* a relative URL */
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if ((s = strstr(url, marker)) == NULL)
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return url;
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if (s - strlen(proto) != url)
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return NULL;
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for (i = 0; proto[i] != '\0'; ++i)
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if (url[i] != proto[i])
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return NULL;
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/* a valid gemini:// URL */
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return s + strlen(marker);
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}
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char *
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url_start_of_request(char *url)
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{
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char *s, *t;
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if ((s = url_after_proto(url)) == NULL)
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return NULL;
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if ((t = strstr(s, "/")) == NULL)
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return s + strlen(s);
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return t;
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}
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int
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url_trim(struct client *c, char *url)
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{
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const char *e = "\r\n";
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char *s;
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if ((s = strstr(url, e)) == NULL)
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return 0;
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s[0] = '\0';
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s[1] = '\0';
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if (s[2] != '\0') {
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LOG(c, "%s", "request longer than 1024 bytes\n");
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return 0;
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}
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return 1;
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}
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char *
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adjust_path(char *path)
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{
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char *s, *query;
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size_t len;
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if ((query = strchr(path, '?')) != NULL) {
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*query = '\0';
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query++;
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}
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/* /.. -> / */
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len = strlen(path);
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if (len >= 3) {
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if (!strcmp(&path[len-3], "/..")) {
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path[len-2] = '\0';
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}
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}
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/* if the path is only `..` trim out and exit */
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if (!strcmp(path, "..")) {
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path[0] = '\0';
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return query;
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}
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/* remove every ../ in the path */
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while (1) {
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if ((s = strstr(path, "../")) == NULL)
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return query;
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memmove(s, s+3, strlen(s)+1); /* copy also the \0 */
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}
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}
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int
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path_isdir(char *path)
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{
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if (*path == '\0')
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return 1;
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return path[strlen(path)-1] == '/';
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}
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int
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start_reply(struct pollfd *pfd, struct client *client, int code, const char *reason)
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{
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char buf[1030] = {0}; /* status + ' ' + max reply len + \r\n\0 */
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int len;
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int ret;
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client->code = code;
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client->meta = reason;
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client->state = S_INITIALIZING;
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len = snprintf(buf, sizeof(buf), "%d %s\r\n", code, reason);
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assert(len < (int)sizeof(buf));
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ret = tls_write(client->ctx, buf, len);
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if (ret == TLS_WANT_POLLIN) {
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pfd->events = POLLIN;
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return 0;
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}
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if (ret == TLS_WANT_POLLOUT) {
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pfd->events = POLLOUT;
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return 0;
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}
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return 1;
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}
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ssize_t
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filesize(int fd)
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{
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ssize_t len;
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if ((len = lseek(fd, 0, SEEK_END)) == -1)
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return -1;
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if (lseek(fd, 0, SEEK_SET) == -1)
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return -1;
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return len;
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}
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const char *
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path_ext(const char *path)
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{
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const char *end;
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end = path + strlen(path)-1; /* the last byte before the NUL */
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for (; end != path; --end) {
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if (*end == '.')
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return end+1;
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if (*end == '/')
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break;
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}
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return NULL;
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}
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const char *
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mime(const char *path)
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{
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const char *ext, *def = "application/octet-stream";
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struct etm *t;
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if ((ext = path_ext(path)) == NULL)
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return def;
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for (t = filetypes; t->mime != NULL; ++t)
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if (!strcmp(ext, t->ext))
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return t->mime;
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return def;
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}
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int
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open_file(char *path, char *query, struct pollfd *fds, struct client *c)
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{
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char fpath[PATHBUF];
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struct stat sb;
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assert(path != NULL);
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bzero(fpath, sizeof(fpath));
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if (*path != '.')
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fpath[0] = '.';
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strlcat(fpath, path, PATHBUF);
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if ((c->fd = openat(dirfd, fpath,
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O_RDONLY | O_NOFOLLOW | O_CLOEXEC)) == -1) {
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LOG(c, "open failed: %s", fpath);
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if (!start_reply(fds, c, NOT_FOUND, "not found"))
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return 0;
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goodbye(fds, c);
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return 0;
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}
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if (fstat(c->fd, &sb) == -1) {
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LOG(c, "fstat failed for %s", fpath);
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if (!start_reply(fds, c, TEMP_FAILURE, "internal server error"))
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return 0;
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goodbye(fds, c);
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return 0;
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}
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if (S_ISDIR(sb.st_mode)) {
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LOG(c, "%s is a directory, trying %s/index.gmi", fpath, fpath);
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close(c->fd);
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c->fd = -1;
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send_dir(fpath, fds, c);
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return 0;
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}
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if (cgi && (sb.st_mode & S_IXUSR)) {
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start_cgi(fpath, query, fds, c);
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return 0;
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}
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if ((c->len = filesize(c->fd)) == -1) {
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LOG(c, "failed to get file size for %s", fpath);
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goodbye(fds, c);
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return 0;
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}
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if ((c->buf = mmap(NULL, c->len, PROT_READ, MAP_PRIVATE,
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c->fd, 0)) == MAP_FAILED) {
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warn("mmap: %s", fpath);
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goodbye(fds, c);
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return 0;
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}
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c->i = c->buf;
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return start_reply(fds, c, SUCCESS, mime(fpath));
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}
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void
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start_cgi(const char *path, const char *query,
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struct pollfd *fds, struct client *c)
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{
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pid_t pid;
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int p[2];
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if (pipe(p) == -1)
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goto err;
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switch (pid = fork()) {
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case -1:
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goto err;
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case 0: { /* child */
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char *expath;
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char addr[INET_ADDRSTRLEN];
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char *argv[] = { NULL, NULL, NULL };
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/* skip the initial ./ */
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path += 2;
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close(p[0]); /* close the read end */
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if (dup2(p[1], 1) == -1)
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goto childerr;
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if (inet_ntop(c->af, &c->addr, addr, sizeof(addr)) == NULL)
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goto childerr;
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/* skip the ./ at the start of path*/
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if (asprintf(&expath, "%s%s", dir, path) == -1)
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goto childerr;
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argv[0] = argv[1] = expath;
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/* fix the env */
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setenv("SERVER_SOFTWARE", "gmid", 1);
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/* setenv("SERVER_NAME", "", 1); */
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/* setenv("GATEWAY_INTERFACE", "CGI/version", 1); */
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setenv("SERVER_PROTOCOL", "gemini", 1);
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setenv("SERVER_PORT", "1965", 1);
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setenv("PATH_INFO", path, 1);
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setenv("PATH_TRANSLATED", expath, 1);
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if (query != NULL)
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setenv("QUERY_STRING", query, 1);
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setenv("REMOTE_ADDR", addr, 1);
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execvp(expath, argv);
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goto childerr;
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}
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default: /* parent */
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close(p[1]); /* close the write end */
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close(c->fd);
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c->fd = p[0];
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c->child = pid;
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mark_nonblock(c->fd);
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c->state = S_SENDING;
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handle_cgi(fds, c);
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return;
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}
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err:
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if (!start_reply(fds, c, TEMP_FAILURE, "internal server error"))
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return;
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goodbye(fds, c);
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return;
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|
childerr:
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dprintf(p[1], "%d internal server error\r\n", TEMP_FAILURE);
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close(p[1]);
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/* don't call atexit stuff */
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_exit(1);
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}
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|
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void
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cgi_setpoll_on_child(struct pollfd *fds, struct client *c)
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{
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int fd;
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|
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if (c->waiting_on_child)
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return;
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c->waiting_on_child = 1;
|
|
|
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fds->events = POLLIN;
|
|
|
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fd = fds->fd;
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fds->fd = c->fd;
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c->fd = fd;
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}
|
|
|
|
void
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cgi_setpoll_on_client(struct pollfd *fds, struct client *c)
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{
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int fd;
|
|
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if (!c->waiting_on_child)
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return;
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c->waiting_on_child = 0;
|
|
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fd = fds->fd;
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fds->fd = c->fd;
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c->fd = fd;
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}
|
|
|
|
void
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handle_cgi(struct pollfd *fds, struct client *c)
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{
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|
ssize_t r;
|
|
|
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/* ensure c->fd is the child and fds->fd the client */
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cgi_setpoll_on_client(fds, c);
|
|
|
|
while (1) {
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if (c->len == 0) {
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if ((r = read(c->fd, c->sbuf, sizeof(c->sbuf))) == 0)
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|
goto end;
|
|
if (r == -1) {
|
|
if (errno == EAGAIN || errno == EWOULDBLOCK) {
|
|
cgi_setpoll_on_child(fds, c);
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return;
|
|
}
|
|
goto end;
|
|
}
|
|
c->len = r;
|
|
c->off = 0;
|
|
}
|
|
|
|
while (c->len > 0) {
|
|
switch (r = tls_write(c->ctx, c->sbuf + c->off, c->len)) {
|
|
case -1:
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|
goto end;
|
|
|
|
case TLS_WANT_POLLOUT:
|
|
fds->events = POLLOUT;
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|
return;
|
|
|
|
case TLS_WANT_POLLIN:
|
|
fds->events = POLLIN;
|
|
return;
|
|
|
|
default:
|
|
c->off += r;
|
|
c->len -= r;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
end:
|
|
goodbye(fds, c);
|
|
}
|
|
|
|
void
|
|
send_file(char *path, char *query, struct pollfd *fds, struct client *c)
|
|
{
|
|
ssize_t ret, len;
|
|
|
|
if (c->fd == -1) {
|
|
if (!open_file(path, query, fds, c))
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|
return;
|
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c->state = S_SENDING;
|
|
}
|
|
|
|
len = (c->buf + c->len) - c->i;
|
|
|
|
while (len > 0) {
|
|
switch (ret = tls_write(c->ctx, c->i, len)) {
|
|
case -1:
|
|
LOG(c, "tls_write: %s", tls_error(c->ctx));
|
|
goodbye(fds, c);
|
|
return;
|
|
|
|
case TLS_WANT_POLLIN:
|
|
fds->events = POLLIN;
|
|
return;
|
|
|
|
case TLS_WANT_POLLOUT:
|
|
fds->events = POLLOUT;
|
|
return;
|
|
|
|
default:
|
|
c->i += ret;
|
|
len -= ret;
|
|
break;
|
|
}
|
|
}
|
|
|
|
goodbye(fds, c);
|
|
}
|
|
|
|
void
|
|
send_dir(char *path, struct pollfd *fds, struct client *client)
|
|
{
|
|
char fpath[PATHBUF];
|
|
size_t len;
|
|
|
|
bzero(fpath, PATHBUF);
|
|
|
|
if (path[0] != '.')
|
|
fpath[0] = '.';
|
|
|
|
/* this cannot fail since sizeof(fpath) > maxlen of path */
|
|
strlcat(fpath, path, PATHBUF);
|
|
len = strlen(fpath);
|
|
|
|
/* add a trailing / in case. */
|
|
if (fpath[len-1] != '/') {
|
|
fpath[len] = '/';
|
|
}
|
|
|
|
strlcat(fpath, "index.gmi", sizeof(fpath));
|
|
|
|
send_file(fpath, NULL, fds, client);
|
|
}
|
|
|
|
void
|
|
handle(struct pollfd *fds, struct client *client)
|
|
{
|
|
char buf[GEMINI_URL_LEN];
|
|
char *path;
|
|
char *query;
|
|
|
|
switch (client->state) {
|
|
case S_OPEN:
|
|
bzero(buf, GEMINI_URL_LEN);
|
|
switch (tls_read(client->ctx, buf, sizeof(buf)-1)) {
|
|
case -1:
|
|
LOG(client, "tls_read: %s", tls_error(client->ctx));
|
|
goodbye(fds, client);
|
|
return;
|
|
|
|
case TLS_WANT_POLLIN:
|
|
fds->events = POLLIN;
|
|
return;
|
|
|
|
case TLS_WANT_POLLOUT:
|
|
fds->events = POLLOUT;
|
|
return;
|
|
}
|
|
|
|
if (!url_trim(client, buf)) {
|
|
if (!start_reply(fds, client, BAD_REQUEST, "bad request"))
|
|
return;
|
|
goodbye(fds, client);
|
|
return;
|
|
}
|
|
|
|
if ((path = url_start_of_request(buf)) == NULL) {
|
|
if (!start_reply(fds, client, BAD_REQUEST, "bad request"))
|
|
return;
|
|
goodbye(fds, client);
|
|
return;
|
|
}
|
|
|
|
query = adjust_path(path);
|
|
LOG(client, "get %s%s%s", path,
|
|
query ? "?" : "",
|
|
query ? query : "");
|
|
|
|
if (path_isdir(path))
|
|
send_dir(path, fds, client);
|
|
else
|
|
send_file(path, query, fds, client);
|
|
break;
|
|
|
|
case S_INITIALIZING:
|
|
if (!start_reply(fds, client, client->code, client->meta))
|
|
return;
|
|
|
|
if (client->code != SUCCESS) {
|
|
/* we don't need a body */
|
|
goodbye(fds, client);
|
|
return;
|
|
}
|
|
|
|
client->state = S_SENDING;
|
|
|
|
/* fallthrough */
|
|
|
|
case S_SENDING:
|
|
if (client->child != -1)
|
|
handle_cgi(fds, client);
|
|
else
|
|
send_file(NULL, NULL, fds, client);
|
|
break;
|
|
|
|
case S_CLOSING:
|
|
goodbye(fds, client);
|
|
break;
|
|
|
|
default:
|
|
/* unreachable */
|
|
abort();
|
|
}
|
|
}
|
|
|
|
void
|
|
mark_nonblock(int fd)
|
|
{
|
|
int flags;
|
|
|
|
if ((flags = fcntl(fd, F_GETFL)) == -1)
|
|
err(1, "fcntl(F_GETFL)");
|
|
if (fcntl(fd, F_SETFL, flags | O_NONBLOCK) == -1)
|
|
err(1, "fcntl(F_SETFL)");
|
|
}
|
|
|
|
int
|
|
make_socket(int port, int family)
|
|
{
|
|
int sock, v;
|
|
struct sockaddr_in addr4;
|
|
struct sockaddr_in6 addr6;
|
|
struct sockaddr *addr;
|
|
socklen_t len;
|
|
|
|
switch (family) {
|
|
case AF_INET:
|
|
bzero(&addr4, sizeof(addr4));
|
|
addr4.sin_family = family;
|
|
addr4.sin_port = htons(port);
|
|
addr4.sin_addr.s_addr = INADDR_ANY;
|
|
addr = (struct sockaddr*)&addr4;
|
|
len = sizeof(addr4);
|
|
break;
|
|
|
|
case AF_INET6:
|
|
bzero(&addr6, sizeof(addr6));
|
|
addr6.sin6_family = AF_INET6;
|
|
addr6.sin6_port = htons(port);
|
|
addr6.sin6_addr = in6addr_any;
|
|
addr = (struct sockaddr*)&addr6;
|
|
len = sizeof(addr6);
|
|
break;
|
|
|
|
default:
|
|
/* unreachable */
|
|
abort();
|
|
}
|
|
|
|
if ((sock = socket(family, SOCK_STREAM, 0)) == -1)
|
|
err(1, "socket");
|
|
|
|
v = 1;
|
|
if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &v, sizeof(v)) == -1)
|
|
err(1, "setsockopt(SO_REUSEADDR)");
|
|
|
|
v = 1;
|
|
if (setsockopt(sock, SOL_SOCKET, SO_REUSEPORT, &v, sizeof(v)) == -1)
|
|
err(1, "setsockopt(SO_REUSEPORT)");
|
|
|
|
mark_nonblock(sock);
|
|
|
|
if (bind(sock, addr, len) == -1)
|
|
err(1, "bind");
|
|
|
|
if (listen(sock, 16) == -1)
|
|
err(1, "listen");
|
|
|
|
return sock;
|
|
}
|
|
|
|
void
|
|
do_accept(int sock, struct tls *ctx, struct pollfd *fds, struct client *clients)
|
|
{
|
|
int i, fd;
|
|
struct sockaddr_in addr;
|
|
socklen_t len;
|
|
|
|
len = sizeof(addr);
|
|
if ((fd = accept(sock, (struct sockaddr*)&addr, &len)) == -1) {
|
|
if (errno == EWOULDBLOCK)
|
|
return;
|
|
err(1, "accept");
|
|
}
|
|
|
|
mark_nonblock(fd);
|
|
|
|
for (i = 0; i < MAX_USERS; ++i) {
|
|
if (fds[i].fd == -1) {
|
|
bzero(&clients[i], sizeof(struct client));
|
|
if (tls_accept_socket(ctx, &clients[i].ctx, fd) == -1)
|
|
break; /* goodbye fd! */
|
|
|
|
fds[i].fd = fd;
|
|
fds[i].events = POLLIN;
|
|
|
|
clients[i].state = S_OPEN;
|
|
clients[i].fd = -1;
|
|
clients[i].child = -1;
|
|
clients[i].buf = MAP_FAILED;
|
|
clients[i].af = AF_INET;
|
|
clients[i].addr = addr.sin_addr;
|
|
|
|
connected_clients++;
|
|
return;
|
|
}
|
|
}
|
|
|
|
close(fd);
|
|
}
|
|
|
|
void
|
|
goodbye(struct pollfd *pfd, struct client *c)
|
|
{
|
|
ssize_t ret;
|
|
|
|
c->state = S_CLOSING;
|
|
|
|
ret = tls_close(c->ctx);
|
|
if (ret == TLS_WANT_POLLIN) {
|
|
pfd->events = POLLIN;
|
|
return;
|
|
}
|
|
if (ret == TLS_WANT_POLLOUT) {
|
|
pfd->events = POLLOUT;
|
|
return;
|
|
}
|
|
|
|
connected_clients--;
|
|
|
|
tls_free(c->ctx);
|
|
c->ctx = NULL;
|
|
|
|
if (c->buf != MAP_FAILED)
|
|
munmap(c->buf, c->len);
|
|
|
|
if (c->fd != -1)
|
|
close(c->fd);
|
|
|
|
close(pfd->fd);
|
|
pfd->fd = -1;
|
|
}
|
|
|
|
void
|
|
loop(struct tls *ctx, int sock)
|
|
{
|
|
int i, todo;
|
|
struct client clients[MAX_USERS];
|
|
struct pollfd fds[MAX_USERS];
|
|
|
|
for (i = 0; i < MAX_USERS; ++i) {
|
|
fds[i].fd = -1;
|
|
fds[i].events = POLLIN;
|
|
bzero(&clients[i], sizeof(struct client));
|
|
}
|
|
|
|
fds[0].fd = sock;
|
|
|
|
for (;;) {
|
|
if ((todo = poll(fds, MAX_USERS, INFTIM)) == -1) {
|
|
if (errno == EINTR) {
|
|
warnx("connected clients: %d", connected_clients);
|
|
continue;
|
|
}
|
|
err(1, "poll");
|
|
}
|
|
|
|
for (i = 0; i < MAX_USERS; i++) {
|
|
assert(i < MAX_USERS);
|
|
|
|
if (fds[i].revents == 0)
|
|
continue;
|
|
|
|
if (fds[i].revents & (POLLERR|POLLNVAL))
|
|
err(1, "bad fd %d", fds[i].fd);
|
|
|
|
if (fds[i].revents & POLLHUP) {
|
|
/* fds[i] may be the fd of the stdin
|
|
* of a cgi script that has exited. */
|
|
if (!clients[i].waiting_on_child) {
|
|
goodbye(&fds[i], &clients[i]);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
todo--;
|
|
|
|
if (i == 0) { /* new client */
|
|
do_accept(sock, ctx, fds, clients);
|
|
continue;
|
|
}
|
|
|
|
handle(&fds[i], &clients[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
usage(const char *me)
|
|
{
|
|
fprintf(stderr,
|
|
"USAGE: %s [-h] [-c cert.pem] [-d docs] [-k key.pem]\n",
|
|
me);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
const char *cert = "cert.pem", *key = "key.pem";
|
|
struct tls *ctx = NULL;
|
|
struct tls_config *conf;
|
|
int sock, ch;
|
|
|
|
signal(SIGPIPE, SIG_IGN);
|
|
signal(SIGCHLD, SIG_IGN);
|
|
|
|
#ifdef SIGINFO
|
|
signal(SIGINFO, siginfo_handler);
|
|
#endif
|
|
signal(SIGUSR2, siginfo_handler);
|
|
|
|
connected_clients = 0;
|
|
|
|
dir = "docs/";
|
|
logfd = 2; /* stderr */
|
|
cgi = 0;
|
|
|
|
while ((ch = getopt(argc, argv, "c:d:hk:l:x")) != -1) {
|
|
switch (ch) {
|
|
case 'c':
|
|
cert = optarg;
|
|
break;
|
|
|
|
case 'd':
|
|
dir = optarg;
|
|
break;
|
|
|
|
case 'h':
|
|
usage(*argv);
|
|
return 0;
|
|
|
|
case 'k':
|
|
key = optarg;
|
|
break;
|
|
|
|
case 'l':
|
|
/* open log file or create it with 644 */
|
|
if ((logfd = open(optarg, O_WRONLY | O_CREAT | O_CLOEXEC,
|
|
S_IRUSR | S_IWUSR | S_IRGRP | S_IWOTH)) == -1)
|
|
err(1, "%s", optarg);
|
|
break;
|
|
|
|
case 'x':
|
|
cgi = 1;
|
|
break;
|
|
|
|
default:
|
|
usage(*argv);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if ((conf = tls_config_new()) == NULL)
|
|
err(1, "tls_config_new");
|
|
|
|
if (tls_config_set_protocols(conf,
|
|
TLS_PROTOCOL_TLSv1_2 | TLS_PROTOCOL_TLSv1_3) == -1)
|
|
err(1, "tls_config_set_protocols");
|
|
|
|
if (tls_config_set_cert_file(conf, cert) == -1)
|
|
err(1, "tls_config_set_cert_file: %s", cert);
|
|
|
|
if (tls_config_set_key_file(conf, key) == -1)
|
|
err(1, "tls_config_set_key_file: %s", key);
|
|
|
|
if ((ctx = tls_server()) == NULL)
|
|
err(1, "tls_server");
|
|
|
|
if (tls_configure(ctx, conf) == -1)
|
|
errx(1, "tls_configure: %s", tls_error(ctx));
|
|
|
|
sock = make_socket(1965, AF_INET);
|
|
|
|
if ((dirfd = open(dir, O_RDONLY | O_DIRECTORY)) == -1)
|
|
err(1, "open: %s", dir);
|
|
|
|
if (unveil(dir, cgi ? "rx" : "r") == -1)
|
|
err(1, "unveil");
|
|
|
|
if (pledge(cgi ? "stdio rpath inet proc exec" : "stdio rpath inet", NULL) == -1)
|
|
err(1, "pledge");
|
|
|
|
loop(ctx, sock);
|
|
|
|
close(sock);
|
|
tls_free(ctx);
|
|
tls_config_free(conf);
|
|
}
|