1*4404b4d5Sflorian /* $OpenBSD: slowcgi.c,v 1.17 2013/10/18 14:48:54 florian Exp $ */ 27ac15270Sflorian /* 37ac15270Sflorian * Copyright (c) 2013 David Gwynne <dlg@openbsd.org> 47ac15270Sflorian * Copyright (c) 2013 Florian Obser <florian@openbsd.org> 57ac15270Sflorian * 67ac15270Sflorian * Permission to use, copy, modify, and distribute this software for any 77ac15270Sflorian * purpose with or without fee is hereby granted, provided that the above 87ac15270Sflorian * copyright notice and this permission notice appear in all copies. 97ac15270Sflorian * 107ac15270Sflorian * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 117ac15270Sflorian * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 127ac15270Sflorian * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 137ac15270Sflorian * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 147ac15270Sflorian * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 157ac15270Sflorian * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 167ac15270Sflorian * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 177ac15270Sflorian */ 187ac15270Sflorian 197ac15270Sflorian #include <sys/types.h> 207ac15270Sflorian #include <sys/ioctl.h> 217ac15270Sflorian #include <sys/queue.h> 227ac15270Sflorian #include <sys/socket.h> 237ac15270Sflorian #include <sys/socketvar.h> 247ac15270Sflorian #include <sys/stat.h> 257ac15270Sflorian #include <sys/un.h> 267ac15270Sflorian #include <sys/wait.h> 277ac15270Sflorian #include <err.h> 2894ee156dSflorian #include <fcntl.h> 297ac15270Sflorian #include <ctype.h> 307ac15270Sflorian #include <errno.h> 317ac15270Sflorian #include <event.h> 327ac15270Sflorian #include <netdb.h> 337ac15270Sflorian #include <pwd.h> 347ac15270Sflorian #include <signal.h> 357ac15270Sflorian #include <stdio.h> 367ac15270Sflorian #include <stdlib.h> 377ac15270Sflorian #include <string.h> 387ac15270Sflorian #include <syslog.h> 397ac15270Sflorian #include <unistd.h> 407ac15270Sflorian 417ac15270Sflorian #define TIMEOUT_DEFAULT 120 427ac15270Sflorian #define SLOWCGI_USER "www" 430ee0284dSblambert 440ee0284dSblambert #define FCGI_CONTENT_SIZE 65535 450ee0284dSblambert #define FCGI_PADDING_SIZE 255 460ee0284dSblambert #define FCGI_RECORD_SIZE \ 470ee0284dSblambert (sizeof(struct fcgi_record_header) + FCGI_CONTENT_SIZE + FCGI_PADDING_SIZE) 480ee0284dSblambert 497ac15270Sflorian #define STDOUT_DONE 1 507ac15270Sflorian #define STDERR_DONE 2 517ac15270Sflorian #define SCRIPT_DONE 4 527ac15270Sflorian 537ac15270Sflorian #define FCGI_BEGIN_REQUEST 1 547ac15270Sflorian #define FCGI_ABORT_REQUEST 2 557ac15270Sflorian #define FCGI_END_REQUEST 3 567ac15270Sflorian #define FCGI_PARAMS 4 577ac15270Sflorian #define FCGI_STDIN 5 587ac15270Sflorian #define FCGI_STDOUT 6 597ac15270Sflorian #define FCGI_STDERR 7 607ac15270Sflorian #define FCGI_DATA 8 617ac15270Sflorian #define FCGI_GET_VALUES 9 627ac15270Sflorian #define FCGI_GET_VALUES_RESULT 10 637ac15270Sflorian #define FCGI_UNKNOWN_TYPE 11 647ac15270Sflorian #define FCGI_MAXTYPE (FCGI_UNKNOWN_TYPE) 657ac15270Sflorian 667ac15270Sflorian #define FCGI_REQUEST_COMPLETE 0 677ac15270Sflorian #define FCGI_CANT_MPX_CONN 1 687ac15270Sflorian #define FCGI_OVERLOADED 2 697ac15270Sflorian #define FCGI_UNKNOWN_ROLE 3 707ac15270Sflorian 717ac15270Sflorian 727ac15270Sflorian struct listener { 737ac15270Sflorian struct event ev, pause; 747ac15270Sflorian }; 757ac15270Sflorian 767ac15270Sflorian struct env_val { 777ac15270Sflorian SLIST_ENTRY(env_val) entry; 787ac15270Sflorian char *val; 797ac15270Sflorian }; 807ac15270Sflorian SLIST_HEAD(env_head, env_val); 817ac15270Sflorian 827ac15270Sflorian struct fcgi_record_header { 837ac15270Sflorian uint8_t version; 847ac15270Sflorian uint8_t type; 857ac15270Sflorian uint16_t id; 867ac15270Sflorian uint16_t content_len; 877ac15270Sflorian uint8_t padding_len; 887ac15270Sflorian uint8_t reserved; 897ac15270Sflorian }__packed; 907ac15270Sflorian 917ac15270Sflorian struct fcgi_response { 927ac15270Sflorian TAILQ_ENTRY(fcgi_response) entry; 930ee0284dSblambert uint8_t data[FCGI_RECORD_SIZE]; 947ac15270Sflorian size_t data_pos; 957ac15270Sflorian size_t data_len; 967ac15270Sflorian }; 977ac15270Sflorian TAILQ_HEAD(fcgi_response_head, fcgi_response); 987ac15270Sflorian 997ac15270Sflorian struct fcgi_stdin { 1007ac15270Sflorian TAILQ_ENTRY(fcgi_stdin) entry; 1017ac15270Sflorian uint8_t data[FCGI_RECORD_SIZE]; 1027ac15270Sflorian size_t data_pos; 1037ac15270Sflorian size_t data_len; 1047ac15270Sflorian }; 1057ac15270Sflorian TAILQ_HEAD(fcgi_stdin_head, fcgi_stdin); 1067ac15270Sflorian 107c3b13bc8Sblambert struct request { 1087ac15270Sflorian struct event ev; 1097ac15270Sflorian struct event resp_ev; 1107ac15270Sflorian struct event tmo; 1117ac15270Sflorian int fd; 1127ac15270Sflorian uint8_t buf[FCGI_RECORD_SIZE]; 1137ac15270Sflorian size_t buf_pos; 1147ac15270Sflorian size_t buf_len; 1157ac15270Sflorian struct fcgi_response_head response_head; 1167ac15270Sflorian struct fcgi_stdin_head stdin_head; 1177ac15270Sflorian uint16_t id; 1187ac15270Sflorian char script_name[MAXPATHLEN]; 1197ac15270Sflorian struct env_head env; 1207ac15270Sflorian int env_count; 1217ac15270Sflorian pid_t script_pid; 1227ac15270Sflorian int script_status; 1237ac15270Sflorian struct event script_ev; 1247ac15270Sflorian struct event script_err_ev; 1257ac15270Sflorian struct event script_stdin_ev; 1267ac15270Sflorian uint8_t script_flags; 1277ac15270Sflorian uint8_t request_started; 1287ac15270Sflorian }; 1297ac15270Sflorian 130c3b13bc8Sblambert struct requests { 131c3b13bc8Sblambert SLIST_ENTRY(requests) entry; 132c3b13bc8Sblambert struct request *request; 1337ac15270Sflorian }; 134c3b13bc8Sblambert SLIST_HEAD(requests_head, requests); 1357ac15270Sflorian 1367ac15270Sflorian struct slowcgi_proc { 137c3b13bc8Sblambert struct requests_head requests; 1387ac15270Sflorian struct event ev_sigchld; 1397ac15270Sflorian struct event ev_sigpipe; 1407ac15270Sflorian }; 1417ac15270Sflorian 1427ac15270Sflorian struct fcgi_begin_request_body { 1437ac15270Sflorian uint16_t role; 1447ac15270Sflorian uint8_t flags; 1457ac15270Sflorian uint8_t reserved[5]; 1467ac15270Sflorian }__packed; 1477ac15270Sflorian 14803e61f17Sblambert struct fcgi_end_request_body { 1497ac15270Sflorian uint32_t app_status; 1507ac15270Sflorian uint8_t protocol_status; 1517ac15270Sflorian uint8_t reserved[3]; 1527ac15270Sflorian }__packed; 15303e61f17Sblambert 1547ac15270Sflorian __dead void usage(void); 1550b5ee19eSblambert void slowcgi_listen(char *, gid_t); 1567ac15270Sflorian void slowcgi_paused(int, short, void *); 1577ac15270Sflorian void slowcgi_accept(int, short, void *); 1587ac15270Sflorian void slowcgi_request(int, short, void *); 1597ac15270Sflorian void slowcgi_response(int, short, void *); 160*4404b4d5Sflorian void slowcgi_add_response(struct request *, struct fcgi_response *); 1617ac15270Sflorian void slowcgi_timeout(int, short, void *); 1627ac15270Sflorian void slowcgi_sig_handler(int, short, void *); 163c3b13bc8Sblambert size_t parse_record(uint8_t * , size_t, struct request *); 164c3b13bc8Sblambert void parse_begin_request(uint8_t *, uint16_t, struct request *, 1657ac15270Sflorian uint16_t); 166c3b13bc8Sblambert void parse_params(uint8_t *, uint16_t, struct request *, uint16_t); 167c3b13bc8Sblambert void parse_stdin(uint8_t *, uint16_t, struct request *, uint16_t); 168c3b13bc8Sblambert void exec_cgi(struct request *); 169c3b13bc8Sblambert void script_in(int, struct event *, struct request *, uint8_t); 1707ac15270Sflorian void script_std_in(int, short, void *); 1717ac15270Sflorian void script_err_in(int, short, void *); 1727ac15270Sflorian void script_out(int, short, void *); 173c3b13bc8Sblambert void create_end_record(struct request *); 17403e61f17Sblambert void dump_fcgi_record(const char *, 17503e61f17Sblambert struct fcgi_record_header *); 1767ac15270Sflorian void dump_fcgi_record_header(const char *, 1777ac15270Sflorian struct fcgi_record_header *); 17803e61f17Sblambert void dump_fcgi_begin_request_body(const char *, 17903e61f17Sblambert struct fcgi_begin_request_body *); 18003e61f17Sblambert void dump_fcgi_end_request_body(const char *, 18103e61f17Sblambert struct fcgi_end_request_body *); 182c3b13bc8Sblambert void cleanup_request(struct request *); 18303e61f17Sblambert 1847ac15270Sflorian struct loggers { 1857ac15270Sflorian void (*err)(int, const char *, ...); 1867ac15270Sflorian void (*errx)(int, const char *, ...); 1877ac15270Sflorian void (*warn)(const char *, ...); 1887ac15270Sflorian void (*warnx)(const char *, ...); 1897ac15270Sflorian void (*info)(const char *, ...); 1907ac15270Sflorian void (*debug)(const char *, ...); 1917ac15270Sflorian }; 1927ac15270Sflorian 1937ac15270Sflorian const struct loggers conslogger = { 1947ac15270Sflorian err, 1957ac15270Sflorian errx, 1967ac15270Sflorian warn, 1977ac15270Sflorian warnx, 1987ac15270Sflorian warnx, /* info */ 1997ac15270Sflorian warnx /* debug */ 2007ac15270Sflorian }; 2017ac15270Sflorian 2027ac15270Sflorian void syslog_err(int, const char *, ...); 2037ac15270Sflorian void syslog_errx(int, const char *, ...); 2047ac15270Sflorian void syslog_warn(const char *, ...); 2057ac15270Sflorian void syslog_warnx(const char *, ...); 2067ac15270Sflorian void syslog_info(const char *, ...); 2077ac15270Sflorian void syslog_debug(const char *, ...); 2087ac15270Sflorian void syslog_vstrerror(int, int, const char *, va_list); 2097ac15270Sflorian 2107ac15270Sflorian const struct loggers syslogger = { 2117ac15270Sflorian syslog_err, 2127ac15270Sflorian syslog_errx, 2137ac15270Sflorian syslog_warn, 2147ac15270Sflorian syslog_warnx, 2157ac15270Sflorian syslog_info, 2167ac15270Sflorian syslog_debug 2177ac15270Sflorian }; 2187ac15270Sflorian 2197ac15270Sflorian const struct loggers *logger = &conslogger; 2207ac15270Sflorian 2217ac15270Sflorian #define lerr(_e, _f...) logger->err((_e), _f) 2227ac15270Sflorian #define lerrx(_e, _f...) logger->errx((_e), _f) 2237ac15270Sflorian #define lwarn(_f...) logger->warn(_f) 2247ac15270Sflorian #define lwarnx(_f...) logger->warnx(_f) 2257ac15270Sflorian #define linfo(_f...) logger->info(_f) 2267ac15270Sflorian #define ldebug(_f...) logger->debug(_f) 2277ac15270Sflorian 2287ac15270Sflorian __dead void 2297ac15270Sflorian usage(void) 2307ac15270Sflorian { 2317ac15270Sflorian extern char *__progname; 2320b5ee19eSblambert fprintf(stderr, "usage: %s [-d] [-s socket]\n", __progname); 2337ac15270Sflorian exit(1); 2347ac15270Sflorian } 2357ac15270Sflorian 2367ac15270Sflorian struct timeval timeout = { TIMEOUT_DEFAULT, 0 }; 2377ac15270Sflorian struct slowcgi_proc slowcgi_proc; 2387ac15270Sflorian int debug = 0; 2397ac15270Sflorian int on = 1; 2400b5ee19eSblambert char *fcgi_socket = "/var/www/run/slowcgi.sock"; 2417ac15270Sflorian 2427ac15270Sflorian int 2437ac15270Sflorian main(int argc, char *argv[]) 2447ac15270Sflorian { 24506619349Sflorian extern char *__progname; 2467ac15270Sflorian struct passwd *pw; 2477ac15270Sflorian int c; 2487ac15270Sflorian 2490b5ee19eSblambert while ((c = getopt(argc, argv, "ds:")) != -1) { 2507ac15270Sflorian switch (c) { 2517ac15270Sflorian case 'd': 2527ac15270Sflorian debug = 1; 2537ac15270Sflorian break; 2540b5ee19eSblambert case 's': 2550b5ee19eSblambert fcgi_socket = optarg; 2560b5ee19eSblambert break; 2577ac15270Sflorian default: 2587ac15270Sflorian usage(); 2597ac15270Sflorian /* NOTREACHED */ 2607ac15270Sflorian } 2617ac15270Sflorian } 2627ac15270Sflorian 2637ac15270Sflorian if (geteuid() != 0) 2647ac15270Sflorian errx(1, "need root privileges"); 2657ac15270Sflorian 2667ac15270Sflorian pw = getpwnam(SLOWCGI_USER); 2677ac15270Sflorian if (pw == NULL) 2687ac15270Sflorian err(1, "no %s user", SLOWCGI_USER); 2697ac15270Sflorian 2707ac15270Sflorian if (!debug && daemon(1, 0) == -1) 2717ac15270Sflorian err(1, "daemon"); 2727ac15270Sflorian 27306619349Sflorian if (!debug) { 27406619349Sflorian openlog(__progname, LOG_PID|LOG_NDELAY, LOG_DAEMON); 27506619349Sflorian logger = &syslogger; 27606619349Sflorian } 27706619349Sflorian 2787ac15270Sflorian event_init(); 2797ac15270Sflorian 2800b5ee19eSblambert slowcgi_listen(fcgi_socket, pw->pw_gid); 2810b5ee19eSblambert 2827ac15270Sflorian if (chroot(pw->pw_dir) == -1) 2837ac15270Sflorian lerr(1, "chroot(%s)", pw->pw_dir); 2847ac15270Sflorian 2857ac15270Sflorian if (chdir("/") == -1) 2867ac15270Sflorian lerr(1, "chdir(%s)", pw->pw_dir); 2877ac15270Sflorian 288bde99fd8Sblambert ldebug("chroot: %s", pw->pw_dir); 289bde99fd8Sblambert 2907ac15270Sflorian if (setgroups(1, &pw->pw_gid) || 2917ac15270Sflorian setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || 2927ac15270Sflorian setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) 2937ac15270Sflorian lerr(1, "unable to revoke privs"); 2947ac15270Sflorian 295c3b13bc8Sblambert SLIST_INIT(&slowcgi_proc.requests); 2967ac15270Sflorian 2977ac15270Sflorian signal_set(&slowcgi_proc.ev_sigchld, SIGCHLD, slowcgi_sig_handler, 2987ac15270Sflorian &slowcgi_proc); 2997ac15270Sflorian signal_set(&slowcgi_proc.ev_sigpipe, SIGPIPE, slowcgi_sig_handler, 3007ac15270Sflorian &slowcgi_proc); 3017ac15270Sflorian 3027ac15270Sflorian signal_add(&slowcgi_proc.ev_sigchld, NULL); 3037ac15270Sflorian signal_add(&slowcgi_proc.ev_sigpipe, NULL); 3047ac15270Sflorian 3057ac15270Sflorian event_dispatch(); 3067ac15270Sflorian return (0); 3077ac15270Sflorian } 3087ac15270Sflorian void 3090b5ee19eSblambert slowcgi_listen(char *path, gid_t gid) 3107ac15270Sflorian { 3117ac15270Sflorian struct listener *l = NULL; 3127ac15270Sflorian struct sockaddr_un sun; 3137ac15270Sflorian mode_t old_umask, mode; 3147ac15270Sflorian int fd; 3157ac15270Sflorian 3167ac15270Sflorian if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) 3177ac15270Sflorian lerr(1, "slowcgi_listen: socket"); 31894ee156dSflorian fcntl(fd, F_SETFD, FD_CLOEXEC); 3197ac15270Sflorian 3207ac15270Sflorian bzero(&sun, sizeof(sun)); 3217ac15270Sflorian sun.sun_family = AF_UNIX; 3227ac15270Sflorian strlcpy(sun.sun_path, path, sizeof(sun.sun_path)); 3237ac15270Sflorian 3247ac15270Sflorian if (unlink(path) == -1) 3257ac15270Sflorian if (errno != ENOENT) 3267ac15270Sflorian lerr(1, "slowcgi_listen: unlink %s", path); 3277ac15270Sflorian 3287ac15270Sflorian old_umask = umask(S_IXUSR|S_IXGRP|S_IWOTH|S_IROTH|S_IXOTH); 3297ac15270Sflorian mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP; 3307ac15270Sflorian 3317ac15270Sflorian if (bind(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) 3327ac15270Sflorian lerr(1,"slowcgi_listen: bind: %s", path); 3337ac15270Sflorian 3347ac15270Sflorian umask(old_umask); 3357ac15270Sflorian 3367ac15270Sflorian if (chmod(path, mode) == -1) 3377ac15270Sflorian lerr(1, "slowcgi_listen: chmod: %s", path); 3387ac15270Sflorian 3397ac15270Sflorian if (chown(path, 0, gid) == -1) 3407ac15270Sflorian lerr(1, "slowcgi_listen: chown: %s", path); 3417ac15270Sflorian 3427ac15270Sflorian if (ioctl(fd, FIONBIO, &on) == -1) 3437ac15270Sflorian lerr(1, "listener ioctl(FIONBIO)"); 3447ac15270Sflorian 3457ac15270Sflorian if (listen(fd, 5) == -1) 3467ac15270Sflorian lerr(1, "listen"); 3477ac15270Sflorian 3487ac15270Sflorian l = calloc(1, sizeof(*l)); 3497ac15270Sflorian if (l == NULL) 3507ac15270Sflorian lerr(1, "listener ev alloc"); 3517ac15270Sflorian 3527ac15270Sflorian event_set(&l->ev, fd, EV_READ | EV_PERSIST, slowcgi_accept, l); 3537ac15270Sflorian event_add(&l->ev, NULL); 3547ac15270Sflorian evtimer_set(&l->pause, slowcgi_paused, l); 355bde99fd8Sblambert 356bde99fd8Sblambert ldebug("socket: %s", path); 3577ac15270Sflorian } 3587ac15270Sflorian 3597ac15270Sflorian void 3607ac15270Sflorian slowcgi_paused(int fd, short events, void *arg) 3617ac15270Sflorian { 3627ac15270Sflorian struct listener *l = arg; 3637ac15270Sflorian event_add(&l->ev, NULL); 3647ac15270Sflorian } 3657ac15270Sflorian 3667ac15270Sflorian void 3677ac15270Sflorian slowcgi_accept(int fd, short events, void *arg) 3687ac15270Sflorian { 3697ac15270Sflorian struct listener *l; 3707ac15270Sflorian struct sockaddr_storage ss; 3717ac15270Sflorian struct timeval pause; 372c3b13bc8Sblambert struct request *c; 373c3b13bc8Sblambert struct requests *requests; 3747ac15270Sflorian socklen_t len; 3757ac15270Sflorian int s; 3767ac15270Sflorian 3777ac15270Sflorian l = arg; 378965b2218Sblambert pause.tv_sec = 1; 379965b2218Sblambert pause.tv_usec = 0; 3807ac15270Sflorian c = NULL; 3817ac15270Sflorian 3827ac15270Sflorian len = sizeof(ss); 3837ac15270Sflorian s = accept(fd, (struct sockaddr *)&ss, &len); 3847ac15270Sflorian if (s == -1) { 3857ac15270Sflorian switch (errno) { 3867ac15270Sflorian case EINTR: 3877ac15270Sflorian case EWOULDBLOCK: 3887ac15270Sflorian case ECONNABORTED: 3897ac15270Sflorian return; 3907ac15270Sflorian case EMFILE: 3917ac15270Sflorian case ENFILE: 3927ac15270Sflorian event_del(&l->ev); 3937ac15270Sflorian evtimer_add(&l->pause, &pause); 3947ac15270Sflorian return; 3957ac15270Sflorian default: 3967ac15270Sflorian lerr(1, "accept"); 3977ac15270Sflorian } 3987ac15270Sflorian } 3997ac15270Sflorian 40094ee156dSflorian fcntl(s, F_SETFD, FD_CLOEXEC); 4017ac15270Sflorian if (ioctl(s, FIONBIO, &on) == -1) 402c3b13bc8Sblambert lerr(1, "request ioctl(FIONBIO)"); 4037ac15270Sflorian 4047ac15270Sflorian c = calloc(1, sizeof(*c)); 4057ac15270Sflorian if (c == NULL) { 406c3b13bc8Sblambert lwarn("cannot calloc request"); 4077ac15270Sflorian close(s); 4087ac15270Sflorian return; 4097ac15270Sflorian } 410c3b13bc8Sblambert requests = calloc(1, sizeof(*requests)); 411c3b13bc8Sblambert if (requests == NULL) { 412c3b13bc8Sblambert lwarn("cannot calloc requests"); 4137ac15270Sflorian close(s); 4147ac15270Sflorian free(c); 4157ac15270Sflorian return; 4167ac15270Sflorian } 4177ac15270Sflorian c->fd = s; 4187ac15270Sflorian c->buf_pos = 0; 4197ac15270Sflorian c->buf_len = 0; 4207ac15270Sflorian c->request_started = 0; 4217ac15270Sflorian TAILQ_INIT(&c->response_head); 4227ac15270Sflorian TAILQ_INIT(&c->stdin_head); 4237ac15270Sflorian 4247ac15270Sflorian event_set(&c->ev, s, EV_READ | EV_PERSIST, slowcgi_request, c); 4257ac15270Sflorian event_add(&c->ev, NULL); 426*4404b4d5Sflorian event_set(&c->resp_ev, s, EV_WRITE | EV_PERSIST, slowcgi_response, c); 4277ac15270Sflorian event_set(&c->tmo, s, 0, slowcgi_timeout, c); 4287ac15270Sflorian event_add(&c->tmo, &timeout); 429c3b13bc8Sblambert requests->request = c; 430c3b13bc8Sblambert SLIST_INSERT_HEAD(&slowcgi_proc.requests, requests, entry); 4317ac15270Sflorian } 4327ac15270Sflorian 4337ac15270Sflorian void 4347ac15270Sflorian slowcgi_timeout(int fd, short events, void *arg) 4357ac15270Sflorian { 436c3b13bc8Sblambert cleanup_request((struct request*) arg); 4377ac15270Sflorian } 4387ac15270Sflorian 4397ac15270Sflorian void 4407ac15270Sflorian slowcgi_sig_handler(int sig, short event, void *arg) 4417ac15270Sflorian { 442c3b13bc8Sblambert struct request *c; 443c3b13bc8Sblambert struct requests *ncs; 4447ac15270Sflorian struct slowcgi_proc *p; 4457ac15270Sflorian pid_t pid; 4467ac15270Sflorian int status; 4477ac15270Sflorian 4487ac15270Sflorian p = arg; 4497ac15270Sflorian c = NULL; 4507ac15270Sflorian 4517ac15270Sflorian switch (sig) { 4527ac15270Sflorian case SIGCHLD: 4537ac15270Sflorian pid = wait(&status); 454c3b13bc8Sblambert SLIST_FOREACH(ncs, &p->requests, entry) 455c3b13bc8Sblambert if (ncs->request->script_pid == pid) { 456c3b13bc8Sblambert c = ncs->request; 4577ac15270Sflorian break; 4587ac15270Sflorian } 459bde99fd8Sblambert if (c == NULL) { 460bde99fd8Sblambert lwarnx("caught exit of unknown child %i", pid); 461bde99fd8Sblambert break; 462bde99fd8Sblambert } 463bde99fd8Sblambert 464bde99fd8Sblambert if (WIFSIGNALED(status)) 465bde99fd8Sblambert c->script_status = WTERMSIG(status); 466bde99fd8Sblambert else 4677ac15270Sflorian c->script_status = WEXITSTATUS(status); 468bde99fd8Sblambert 4697ac15270Sflorian if (c->script_flags == (STDOUT_DONE | STDERR_DONE)) 470c3b13bc8Sblambert create_end_record(c); 4717ac15270Sflorian c->script_flags |= SCRIPT_DONE; 472bde99fd8Sblambert 473bde99fd8Sblambert ldebug("wait: %s", c->script_name); 474bde99fd8Sblambert break; 4757ac15270Sflorian case SIGPIPE: 4767ac15270Sflorian /* ignore */ 4777ac15270Sflorian break; 4787ac15270Sflorian default: 4797ac15270Sflorian lerr(1, "unexpected signal: %d", sig); 4807ac15270Sflorian 4817ac15270Sflorian } 4827ac15270Sflorian } 4837ac15270Sflorian 4847ac15270Sflorian void 485*4404b4d5Sflorian slowcgi_add_response(struct request *c, struct fcgi_response *resp) 486*4404b4d5Sflorian { 487*4404b4d5Sflorian TAILQ_INSERT_TAIL(&c->response_head, resp, entry); 488*4404b4d5Sflorian event_add(&c->resp_ev, NULL); 489*4404b4d5Sflorian } 490*4404b4d5Sflorian 491*4404b4d5Sflorian void 4927ac15270Sflorian slowcgi_response(int fd, short events, void *arg) 4937ac15270Sflorian { 494c3b13bc8Sblambert struct request *c; 4957ac15270Sflorian struct fcgi_record_header *header; 4967ac15270Sflorian struct fcgi_response *resp; 4977ac15270Sflorian ssize_t n; 4987ac15270Sflorian 4997ac15270Sflorian c = arg; 5007ac15270Sflorian 5017ac15270Sflorian while ((resp = TAILQ_FIRST(&c->response_head))) { 5027ac15270Sflorian header = (struct fcgi_record_header*) resp->data; 5037ac15270Sflorian if (debug) 50403e61f17Sblambert dump_fcgi_record("resp ", header); 5057ac15270Sflorian 5067ac15270Sflorian n = write(fd, resp->data + resp->data_pos, resp->data_len); 5077ac15270Sflorian if (n == -1) { 5087ac15270Sflorian if (errno == EAGAIN) 5097ac15270Sflorian return; 510c3b13bc8Sblambert cleanup_request(c); 5117ac15270Sflorian return; 5127ac15270Sflorian } 5137ac15270Sflorian resp->data_pos += n; 5147ac15270Sflorian resp->data_len -= n; 5157ac15270Sflorian if (resp->data_len == 0) { 5167ac15270Sflorian TAILQ_REMOVE(&c->response_head, resp, entry); 5177ac15270Sflorian free(resp); 5187ac15270Sflorian } 5197ac15270Sflorian } 5207ac15270Sflorian 5217ac15270Sflorian if (TAILQ_EMPTY(&c->response_head)) { 5227ac15270Sflorian if (c->script_flags == (STDOUT_DONE | STDERR_DONE | 5237ac15270Sflorian SCRIPT_DONE)) 524c3b13bc8Sblambert cleanup_request(c); 5257ac15270Sflorian else 5267ac15270Sflorian event_del(&c->resp_ev); 5277ac15270Sflorian } 5287ac15270Sflorian } 5297ac15270Sflorian 5307ac15270Sflorian void 5317ac15270Sflorian slowcgi_request(int fd, short events, void *arg) 5327ac15270Sflorian { 533c3b13bc8Sblambert struct request *c; 5347ac15270Sflorian size_t n, parsed; 5357ac15270Sflorian 5367ac15270Sflorian c = arg; 5377ac15270Sflorian parsed = 0; 5387ac15270Sflorian 5397ac15270Sflorian n = read(fd, c->buf + c->buf_pos + c->buf_len, 5407ac15270Sflorian FCGI_RECORD_SIZE - c->buf_pos-c->buf_len); 5417ac15270Sflorian 5427ac15270Sflorian switch (n) { 5437ac15270Sflorian case -1: 5447ac15270Sflorian switch (errno) { 5457ac15270Sflorian case EINTR: 5467ac15270Sflorian case EAGAIN: 5477ac15270Sflorian return; 5487ac15270Sflorian default: 5497ac15270Sflorian goto fail; 5507ac15270Sflorian } 5517ac15270Sflorian break; 5527ac15270Sflorian 5537ac15270Sflorian case 0: 5547ac15270Sflorian ldebug("closed connection"); 5557ac15270Sflorian goto fail; 5567ac15270Sflorian default: 5577ac15270Sflorian break; 5587ac15270Sflorian } 5597ac15270Sflorian 5607ac15270Sflorian c->buf_len += n; 5617ac15270Sflorian 56202ad6491Sblambert /* 56302ad6491Sblambert * Parse the records as they are received. Per the FastCGI 56402ad6491Sblambert * specification, the server need only receive the FastCGI 56502ad6491Sblambert * parameter records in full; it is free to begin execution 56602ad6491Sblambert * at that point, which is what happens here. 56702ad6491Sblambert */ 5687ac15270Sflorian do { 569c3b13bc8Sblambert parsed = parse_record(c->buf + c->buf_pos, c->buf_len, c); 5707ac15270Sflorian c->buf_pos += parsed; 5717ac15270Sflorian c->buf_len -= parsed; 5727ac15270Sflorian } while (parsed > 0 && c->buf_len > 0); 5737ac15270Sflorian 574965b2218Sblambert /* Make space for further reads */ 5757ac15270Sflorian if (c->buf_len > 0) { 5767ac15270Sflorian bcopy(c->buf + c->buf_pos, c->buf, c->buf_len); 5777ac15270Sflorian c->buf_pos = 0; 5787ac15270Sflorian } 5797ac15270Sflorian return; 5807ac15270Sflorian fail: 581c3b13bc8Sblambert cleanup_request(c); 5827ac15270Sflorian } 5837ac15270Sflorian 5847ac15270Sflorian void 585c3b13bc8Sblambert parse_begin_request(uint8_t *buf, uint16_t n, struct request *c, uint16_t id) 5867ac15270Sflorian { 5877ac15270Sflorian struct fcgi_begin_request_body *b; 5887ac15270Sflorian 589965b2218Sblambert /* XXX -- FCGI_CANT_MPX_CONN */ 5907ac15270Sflorian if (c->request_started) { 5917ac15270Sflorian lwarnx("unexpected FCGI_BEGIN_REQUEST, ignoring"); 5927ac15270Sflorian return; 5937ac15270Sflorian } 5947ac15270Sflorian 5957ac15270Sflorian if (n != sizeof(struct fcgi_begin_request_body)) { 5967ac15270Sflorian lwarnx("wrong size %d != %d", n, 5977ac15270Sflorian sizeof(struct fcgi_begin_request_body)); 5987ac15270Sflorian return; 5997ac15270Sflorian } 6007ac15270Sflorian 6017ac15270Sflorian c->request_started = 1; 6027ac15270Sflorian b = (struct fcgi_begin_request_body*) buf; 6037ac15270Sflorian 6047ac15270Sflorian c->id = id; 6057ac15270Sflorian SLIST_INIT(&c->env); 6067ac15270Sflorian c->env_count = 0; 6077ac15270Sflorian } 6087ac15270Sflorian void 609c3b13bc8Sblambert parse_params(uint8_t *buf, uint16_t n, struct request *c, uint16_t id) 6107ac15270Sflorian { 6117ac15270Sflorian struct env_val *env_entry; 6127ac15270Sflorian uint32_t name_len, val_len; 6137ac15270Sflorian 6147ac15270Sflorian if (!c->request_started) { 6157ac15270Sflorian lwarnx("FCGI_PARAMS without FCGI_BEGIN_REQUEST, ignoring"); 6167ac15270Sflorian return; 6177ac15270Sflorian } 6187ac15270Sflorian 6197ac15270Sflorian if (c->id != id) { 6207ac15270Sflorian lwarnx("unexpected id, ignoring"); 6217ac15270Sflorian return; 6227ac15270Sflorian } 6237ac15270Sflorian 6247ac15270Sflorian name_len = val_len = 0; 6257ac15270Sflorian 62602ad6491Sblambert /* 62702ad6491Sblambert * If this is the last FastCGI parameter record, 62802ad6491Sblambert * begin execution of the CGI script. 62902ad6491Sblambert */ 6307ac15270Sflorian if (n == 0) { 6317ac15270Sflorian exec_cgi(c); 6327ac15270Sflorian return; 6337ac15270Sflorian } 63402ad6491Sblambert 6357ac15270Sflorian while (n > 0) { 6367ac15270Sflorian if (buf[0] >> 7 == 0) { 6377ac15270Sflorian name_len = buf[0]; 6387ac15270Sflorian n--; 6397ac15270Sflorian buf++; 6407ac15270Sflorian } else { 6417ac15270Sflorian if (n > 3) { 6427ac15270Sflorian name_len = ((buf[3] & 0x7f) << 24) + 6437ac15270Sflorian (buf[2] << 16) + (buf[1] << 8) + buf[0]; 6447ac15270Sflorian n -= 4; 6457ac15270Sflorian buf += 4; 6467ac15270Sflorian } else 6477ac15270Sflorian return; 6487ac15270Sflorian } 6497ac15270Sflorian 6507ac15270Sflorian if (n > 0) { 6517ac15270Sflorian if (buf[0] >> 7 == 0) { 6527ac15270Sflorian val_len = buf[0]; 6537ac15270Sflorian n--; 6547ac15270Sflorian buf++; 6557ac15270Sflorian } else { 6567ac15270Sflorian if (n > 3) { 6577ac15270Sflorian val_len = ((buf[3] & 0x7f) << 24) + 6587ac15270Sflorian (buf[2] << 16) + (buf[1] << 8) + 6597ac15270Sflorian buf[0]; 6607ac15270Sflorian n -= 4; 6617ac15270Sflorian buf += 4; 6627ac15270Sflorian } else 6637ac15270Sflorian return; 6647ac15270Sflorian } 6657ac15270Sflorian } 6667ac15270Sflorian if (n < name_len + val_len) 6677ac15270Sflorian return; 6687ac15270Sflorian 6697ac15270Sflorian if ((env_entry = malloc(sizeof(struct env_val))) == NULL) { 6707ac15270Sflorian lwarnx("cannot allocate env_entry"); 6717ac15270Sflorian return; 6727ac15270Sflorian } 6737ac15270Sflorian 6747ac15270Sflorian if ((env_entry->val = calloc(sizeof(char), name_len + val_len + 6757ac15270Sflorian 2)) == NULL) { 6767ac15270Sflorian lwarnx("cannot allocate env_entry->val"); 6777ac15270Sflorian free(env_entry); 6787ac15270Sflorian return; 6797ac15270Sflorian } 6807ac15270Sflorian 6817ac15270Sflorian bcopy(buf, env_entry->val, name_len); 682965b2218Sblambert buf += name_len; 683965b2218Sblambert n -= name_len; 6847ac15270Sflorian 6857ac15270Sflorian env_entry->val[name_len] = '\0'; 6867ac15270Sflorian if (val_len < MAXPATHLEN && strcmp(env_entry->val, 6877ac15270Sflorian "SCRIPT_NAME") == 0) { 6887ac15270Sflorian bcopy(buf, c->script_name, val_len); 68953847fa2Sflorian c->script_name[val_len] = '\0'; 6907ac15270Sflorian } 6917ac15270Sflorian env_entry->val[name_len] = '='; 6927ac15270Sflorian 6937ac15270Sflorian bcopy(buf, (env_entry->val) + name_len + 1, val_len); 694965b2218Sblambert buf += val_len; 695965b2218Sblambert n -= val_len; 6967ac15270Sflorian 6977ac15270Sflorian SLIST_INSERT_HEAD(&c->env, env_entry, entry); 6987ac15270Sflorian c->env_count++; 6997ac15270Sflorian } 7007ac15270Sflorian } 7017ac15270Sflorian 7027ac15270Sflorian void 703c3b13bc8Sblambert parse_stdin(uint8_t *buf, uint16_t n, struct request *c, uint16_t id) 7047ac15270Sflorian { 7057ac15270Sflorian struct fcgi_stdin *node; 7067ac15270Sflorian 7077ac15270Sflorian if (c->id != id) { 7087ac15270Sflorian lwarnx("unexpected id, ignoring"); 7097ac15270Sflorian return; 7107ac15270Sflorian } 7117ac15270Sflorian 7127ac15270Sflorian if ((node = calloc(1, sizeof(struct fcgi_stdin))) == NULL) { 7137ac15270Sflorian lwarnx("cannot calloc stdin node"); 7147ac15270Sflorian return; 7157ac15270Sflorian } 7167ac15270Sflorian 7177ac15270Sflorian bcopy(buf, node->data, n); 7187ac15270Sflorian node->data_pos = 0; 7197ac15270Sflorian node->data_len = n; 7207ac15270Sflorian 7217ac15270Sflorian TAILQ_INSERT_TAIL(&c->stdin_head, node, entry); 7227ac15270Sflorian 723a9461a24Sflorian if (event_initialized(&c->script_stdin_ev)) 7247ac15270Sflorian event_add(&c->script_stdin_ev, NULL); 7257ac15270Sflorian } 7267ac15270Sflorian 7277ac15270Sflorian size_t 728c3b13bc8Sblambert parse_record(uint8_t *buf, size_t n, struct request *c) 7297ac15270Sflorian { 7307ac15270Sflorian struct fcgi_record_header *h; 7317ac15270Sflorian 7327ac15270Sflorian if (n < sizeof(struct fcgi_record_header)) 7337ac15270Sflorian return (0); 7347ac15270Sflorian 7357ac15270Sflorian h = (struct fcgi_record_header*) buf; 7367ac15270Sflorian 7377ac15270Sflorian if (debug) 73803e61f17Sblambert dump_fcgi_record("", h); 7397ac15270Sflorian 7407ac15270Sflorian if (n < sizeof(struct fcgi_record_header) + ntohs(h->content_len) 7417ac15270Sflorian + h->padding_len) 7427ac15270Sflorian return (0); 7437ac15270Sflorian 7447ac15270Sflorian if (h->version != 1) 7457ac15270Sflorian lerrx(1, "wrong version"); 7467ac15270Sflorian 7477ac15270Sflorian switch (h->type) { 7487ac15270Sflorian case FCGI_BEGIN_REQUEST: 7497ac15270Sflorian parse_begin_request(buf + sizeof(struct fcgi_record_header), 7507ac15270Sflorian ntohs(h->content_len), c, ntohs(h->id)); 7517ac15270Sflorian break; 7527ac15270Sflorian case FCGI_PARAMS: 7537ac15270Sflorian parse_params(buf + sizeof(struct fcgi_record_header), 7547ac15270Sflorian ntohs(h->content_len), c, ntohs(h->id)); 7557ac15270Sflorian break; 7567ac15270Sflorian case FCGI_STDIN: 7577ac15270Sflorian parse_stdin(buf + sizeof(struct fcgi_record_header), 7587ac15270Sflorian ntohs(h->content_len), c, ntohs(h->id)); 7597ac15270Sflorian break; 7607ac15270Sflorian default: 7617ac15270Sflorian lwarnx("unimplemented type %d", h->type); 7627ac15270Sflorian } 7637ac15270Sflorian 7647ac15270Sflorian return (sizeof(struct fcgi_record_header) + ntohs(h->content_len) 7657ac15270Sflorian + h->padding_len); 7667ac15270Sflorian } 7677ac15270Sflorian 76802ad6491Sblambert /* 76902ad6491Sblambert * Fork a new CGI process to handle the request, translating 77002ad6491Sblambert * between FastCGI parameter records and CGI's environment variables, 77102ad6491Sblambert * as well as between the CGI process' stdin/stdout and the 77202ad6491Sblambert * corresponding FastCGI records. 77302ad6491Sblambert */ 7747ac15270Sflorian void 775c3b13bc8Sblambert exec_cgi(struct request *c) 7767ac15270Sflorian { 7777ac15270Sflorian struct env_val *env_entry; 778a9461a24Sflorian int s_in[2], s_out[2], s_err[2], i; 7797ac15270Sflorian pid_t pid; 7807ac15270Sflorian char *argv[2]; 7817ac15270Sflorian char **env; 7827ac15270Sflorian 7837ac15270Sflorian i = 0; 7847ac15270Sflorian 785a9461a24Sflorian if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, s_in) == -1) 786a9461a24Sflorian lerr(1, "socketpair"); 787a9461a24Sflorian if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, s_out) == -1) 7887ac15270Sflorian lerr(1, "socketpair"); 7897ac15270Sflorian if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, s_err) == -1) 7907ac15270Sflorian lerr(1, "socketpair"); 7917ac15270Sflorian ldebug("fork: %s", c->script_name); 792965b2218Sblambert 7937ac15270Sflorian switch (pid = fork()) { 7947ac15270Sflorian case -1: 7957ac15270Sflorian lwarn("fork"); 7967ac15270Sflorian return; 7977ac15270Sflorian case 0: 7987ac15270Sflorian /* Child process */ 799a9461a24Sflorian close(s_in[0]); 800a9461a24Sflorian close(s_out[0]); 8017ac15270Sflorian close(s_err[0]); 802a9461a24Sflorian if (dup2(s_in[1], STDIN_FILENO) == -1) 8037ac15270Sflorian _exit(1); 804a9461a24Sflorian if (dup2(s_out[1], STDOUT_FILENO) == -1) 8057ac15270Sflorian _exit(1); 8067ac15270Sflorian if (dup2(s_err[1], STDERR_FILENO) == -1) 8077ac15270Sflorian _exit(1); 8087ac15270Sflorian argv[0] = c->script_name; 8097ac15270Sflorian argv[1] = NULL; 8107ac15270Sflorian if ((env = calloc(c->env_count + 1, sizeof(char*))) == NULL) 8117ac15270Sflorian _exit(1); 8127ac15270Sflorian SLIST_FOREACH(env_entry, &c->env, entry) 8137ac15270Sflorian env[i++] = env_entry->val; 8147ac15270Sflorian env[i++] = NULL; 8157ac15270Sflorian execve(c->script_name, argv, env); 8167ac15270Sflorian _exit(1); 8177ac15270Sflorian 8187ac15270Sflorian } 8197ac15270Sflorian /* Parent process*/ 820a9461a24Sflorian close(s_in[1]); 821a9461a24Sflorian close(s_out[1]); 8227ac15270Sflorian close(s_err[1]); 82394ee156dSflorian 824a9461a24Sflorian fcntl(s_in[0], F_SETFD, FD_CLOEXEC); 825a9461a24Sflorian fcntl(s_out[0], F_SETFD, FD_CLOEXEC); 82694ee156dSflorian fcntl(s_err[0], F_SETFD, FD_CLOEXEC); 82794ee156dSflorian 828a9461a24Sflorian if (ioctl(s_in[0], FIONBIO, &on) == -1) 829a9461a24Sflorian lerr(1, "script ioctl(FIONBIO)"); 830a9461a24Sflorian if (ioctl(s_out[0], FIONBIO, &on) == -1) 8317ac15270Sflorian lerr(1, "script ioctl(FIONBIO)"); 8327ac15270Sflorian if (ioctl(s_err[0], FIONBIO, &on) == -1) 8337ac15270Sflorian lerr(1, "script ioctl(FIONBIO)"); 8347ac15270Sflorian 8357ac15270Sflorian c->script_pid = pid; 836a9461a24Sflorian event_set(&c->script_stdin_ev, s_in[0], EV_WRITE | EV_PERSIST, 837a9461a24Sflorian script_out, c); 838a9461a24Sflorian event_add(&c->script_stdin_ev, NULL); 839a9461a24Sflorian event_set(&c->script_ev, s_out[0], EV_READ | EV_PERSIST, 840a9461a24Sflorian script_std_in, c); 8417ac15270Sflorian event_add(&c->script_ev, NULL); 8427ac15270Sflorian event_set(&c->script_err_ev, s_err[0], EV_READ | EV_PERSIST, 8437ac15270Sflorian script_err_in, c); 8447ac15270Sflorian event_add(&c->script_err_ev, NULL); 8457ac15270Sflorian } 8467ac15270Sflorian 8477ac15270Sflorian void 848c3b13bc8Sblambert create_end_record(struct request *c) 8497ac15270Sflorian { 8507ac15270Sflorian struct fcgi_response *resp; 8517ac15270Sflorian struct fcgi_record_header *header; 85203e61f17Sblambert struct fcgi_end_request_body *end_request; 8537ac15270Sflorian 8547ac15270Sflorian if ((resp = malloc(sizeof(struct fcgi_response))) == NULL) { 8557ac15270Sflorian lwarnx("cannot malloc fcgi_response"); 8567ac15270Sflorian return; 8577ac15270Sflorian } 8587ac15270Sflorian header = (struct fcgi_record_header*) resp->data; 8597ac15270Sflorian header->version = 1; 8607ac15270Sflorian header->type = FCGI_END_REQUEST; 8617ac15270Sflorian header->id = htons(c->id); 8627ac15270Sflorian header->content_len = htons(sizeof(struct 86303e61f17Sblambert fcgi_end_request_body)); 8647ac15270Sflorian header->padding_len = 0; 8657ac15270Sflorian header->reserved = 0; 8668c347892Sflorian end_request = (struct fcgi_end_request_body *) (resp->data + 8678c347892Sflorian sizeof(struct fcgi_record_header)); 8687ac15270Sflorian end_request->app_status = htonl(c->script_status); 8697ac15270Sflorian end_request->protocol_status = FCGI_REQUEST_COMPLETE; 8708c347892Sflorian end_request->reserved[0] = 0; 8718c347892Sflorian end_request->reserved[1] = 0; 8728c347892Sflorian end_request->reserved[2] = 0; 8737ac15270Sflorian resp->data_pos = 0; 87403e61f17Sblambert resp->data_len = sizeof(struct fcgi_end_request_body) + 8757ac15270Sflorian sizeof(struct fcgi_record_header); 876*4404b4d5Sflorian slowcgi_add_response(c, resp); 8777ac15270Sflorian } 8787ac15270Sflorian 8797ac15270Sflorian void 880c3b13bc8Sblambert script_in(int fd, struct event *ev, struct request *c, uint8_t type) 8817ac15270Sflorian { 8827ac15270Sflorian struct fcgi_response *resp; 8837ac15270Sflorian struct fcgi_record_header *header; 8847ac15270Sflorian ssize_t n; 8857ac15270Sflorian 8867ac15270Sflorian if ((resp = malloc(sizeof(struct fcgi_response))) == NULL) { 8877ac15270Sflorian lwarnx("cannot malloc fcgi_response"); 8887ac15270Sflorian return; 8897ac15270Sflorian } 8907ac15270Sflorian header = (struct fcgi_record_header*) resp->data; 8917ac15270Sflorian header->version = 1; 8927ac15270Sflorian header->type = type; 8937ac15270Sflorian header->id = htons(c->id); 8947ac15270Sflorian header->padding_len = 0; 8957ac15270Sflorian header->reserved = 0; 8967ac15270Sflorian 8977ac15270Sflorian n = read(fd, resp->data + sizeof(struct fcgi_record_header), 8980ee0284dSblambert FCGI_CONTENT_SIZE); 8997ac15270Sflorian 9007ac15270Sflorian if (n == -1) { 9017ac15270Sflorian switch (errno) { 9027ac15270Sflorian case EINTR: 9037ac15270Sflorian case EAGAIN: 904aa48dbd7Sjasper free(resp); 9057ac15270Sflorian return; 9067ac15270Sflorian default: 9077ac15270Sflorian n = 0; /* fake empty FCGI_STD{OUT,ERR} response */ 9087ac15270Sflorian } 9097ac15270Sflorian } 9107ac15270Sflorian header->content_len = htons(n); 9117ac15270Sflorian resp->data_pos = 0; 9127ac15270Sflorian resp->data_len = n + sizeof(struct fcgi_record_header); 913*4404b4d5Sflorian slowcgi_add_response(c, resp); 9147ac15270Sflorian 9157ac15270Sflorian if (n == 0) { 9167ac15270Sflorian if (type == FCGI_STDOUT) 9177ac15270Sflorian c->script_flags |= STDOUT_DONE; 9187ac15270Sflorian else 9197ac15270Sflorian c->script_flags |= STDERR_DONE; 9207ac15270Sflorian 9217ac15270Sflorian if (c->script_flags == (STDOUT_DONE | STDERR_DONE | 9227ac15270Sflorian SCRIPT_DONE)) { 923c3b13bc8Sblambert create_end_record(c); 9247ac15270Sflorian } 9257ac15270Sflorian event_del(ev); 9267ac15270Sflorian close(fd); 9277ac15270Sflorian } 9287ac15270Sflorian } 9297ac15270Sflorian 9307ac15270Sflorian void 9317ac15270Sflorian script_std_in(int fd, short events, void *arg) 9327ac15270Sflorian { 933c3b13bc8Sblambert struct request *c = arg; 9347ac15270Sflorian script_in(fd, &c->script_ev, c, FCGI_STDOUT); 9357ac15270Sflorian } 9367ac15270Sflorian 9377ac15270Sflorian void 9387ac15270Sflorian script_err_in(int fd, short events, void *arg) 9397ac15270Sflorian { 940c3b13bc8Sblambert struct request *c = arg; 9417ac15270Sflorian script_in(fd, &c->script_err_ev, c, FCGI_STDERR); 9427ac15270Sflorian } 9437ac15270Sflorian 9447ac15270Sflorian void 9457ac15270Sflorian script_out(int fd, short events, void *arg) 9467ac15270Sflorian { 947c3b13bc8Sblambert struct request *c; 9487ac15270Sflorian struct fcgi_stdin *node; 9497ac15270Sflorian ssize_t n; 9507ac15270Sflorian 9517ac15270Sflorian c = arg; 9527ac15270Sflorian 9537ac15270Sflorian while ((node = TAILQ_FIRST(&c->stdin_head))) { 9547ac15270Sflorian if (node->data_len == 0) { /* end of stdin marker */ 955a9461a24Sflorian close(fd); 9567ac15270Sflorian break; 9577ac15270Sflorian } 9587ac15270Sflorian n = write(fd, node->data + node->data_pos, node->data_len); 9597ac15270Sflorian if (n == -1) { 9607ac15270Sflorian if (errno == EAGAIN) 9617ac15270Sflorian return; 9627ac15270Sflorian event_del(&c->script_stdin_ev); 9637ac15270Sflorian return; 9647ac15270Sflorian } 9657ac15270Sflorian node->data_pos += n; 9667ac15270Sflorian node->data_len -= n; 9677ac15270Sflorian if (node->data_len == 0) { 9687ac15270Sflorian TAILQ_REMOVE(&c->stdin_head, node, entry); 9697ac15270Sflorian free(node); 9707ac15270Sflorian } 9717ac15270Sflorian } 972a9461a24Sflorian event_del(&c->script_stdin_ev); 9737ac15270Sflorian } 9747ac15270Sflorian 9757ac15270Sflorian void 976c3b13bc8Sblambert cleanup_request(struct request *c) 9777ac15270Sflorian { 9787ac15270Sflorian struct fcgi_response *resp; 9797ac15270Sflorian struct fcgi_stdin *stdin_node; 9807ac15270Sflorian struct env_val *env_entry; 981c3b13bc8Sblambert struct requests *ncs, *tcs; 9827ac15270Sflorian 9837ac15270Sflorian evtimer_del(&c->tmo); 9847ac15270Sflorian if (event_initialized(&c->ev)) 9857ac15270Sflorian event_del(&c->ev); 9867ac15270Sflorian if (event_initialized(&c->resp_ev)) 9877ac15270Sflorian event_del(&c->resp_ev); 9887ac15270Sflorian if (event_initialized(&c->script_ev)) { 9897ac15270Sflorian close(EVENT_FD(&c->script_ev)); 9907ac15270Sflorian event_del(&c->script_ev); 9917ac15270Sflorian } 9927ac15270Sflorian if (event_initialized(&c->script_err_ev)) { 9937ac15270Sflorian close(EVENT_FD(&c->script_err_ev)); 9947ac15270Sflorian event_del(&c->script_err_ev); 9957ac15270Sflorian } 9967ac15270Sflorian if (event_initialized(&c->script_stdin_ev)) { 9977ac15270Sflorian close(EVENT_FD(&c->script_stdin_ev)); 9987ac15270Sflorian event_del(&c->script_stdin_ev); 9997ac15270Sflorian } 10007ac15270Sflorian close(c->fd); 10017ac15270Sflorian while (!SLIST_EMPTY(&c->env)) { 10027ac15270Sflorian env_entry = SLIST_FIRST(&c->env); 10037ac15270Sflorian SLIST_REMOVE_HEAD(&c->env, entry); 10047ac15270Sflorian free(env_entry->val); 10057ac15270Sflorian free(env_entry); 10067ac15270Sflorian } 10077ac15270Sflorian 10087ac15270Sflorian while ((resp = TAILQ_FIRST(&c->response_head))) { 10097ac15270Sflorian TAILQ_REMOVE(&c->response_head, resp, entry); 10107ac15270Sflorian free(resp); 10117ac15270Sflorian } 10127ac15270Sflorian while ((stdin_node = TAILQ_FIRST(&c->stdin_head))) { 10137ac15270Sflorian TAILQ_REMOVE(&c->stdin_head, stdin_node, entry); 10147ac15270Sflorian free(stdin_node); 10157ac15270Sflorian } 1016c3b13bc8Sblambert SLIST_FOREACH_SAFE(ncs, &slowcgi_proc.requests, entry, tcs) { 1017c3b13bc8Sblambert if (ncs->request == c) { 1018c3b13bc8Sblambert SLIST_REMOVE(&slowcgi_proc.requests, ncs, requests, 10197ac15270Sflorian entry); 10207ac15270Sflorian free(ncs); 10217ac15270Sflorian break; 10227ac15270Sflorian } 10237ac15270Sflorian } 10247ac15270Sflorian free(c); 10257ac15270Sflorian } 10267ac15270Sflorian 1027965b2218Sblambert void 102803e61f17Sblambert dump_fcgi_record(const char *p, struct fcgi_record_header *h) 102903e61f17Sblambert { 103003e61f17Sblambert dump_fcgi_record_header(p, h); 103103e61f17Sblambert 103203e61f17Sblambert if (h->type == FCGI_BEGIN_REQUEST) 103303e61f17Sblambert dump_fcgi_begin_request_body(p, 1034d241f573Sflorian (struct fcgi_begin_request_body *)(h + 1)); 103503e61f17Sblambert else if (h->type == FCGI_END_REQUEST) 103603e61f17Sblambert dump_fcgi_end_request_body(p, 1037d241f573Sflorian (struct fcgi_end_request_body *)(h + 1)); 103803e61f17Sblambert } 103903e61f17Sblambert 104003e61f17Sblambert void 1041965b2218Sblambert dump_fcgi_record_header(const char* p, struct fcgi_record_header *h) 10427ac15270Sflorian { 10437ac15270Sflorian ldebug("%sversion: %d", p, h->version); 10447ac15270Sflorian ldebug("%stype: %d", p, h->type); 10457ac15270Sflorian ldebug("%srequestId: %d", p, ntohs(h->id)); 10467ac15270Sflorian ldebug("%scontentLength: %d", p, ntohs(h->content_len)); 10477ac15270Sflorian ldebug("%spaddingLength: %d", p, h->padding_len); 10487ac15270Sflorian ldebug("%sreserved: %d", p, h->reserved); 10497ac15270Sflorian } 10507ac15270Sflorian 10517ac15270Sflorian void 105203e61f17Sblambert dump_fcgi_begin_request_body(const char *p, struct fcgi_begin_request_body *b) 105303e61f17Sblambert { 105403e61f17Sblambert ldebug("%srole %d", p, ntohs(b->role)); 105503e61f17Sblambert ldebug("%sflags %d", p, b->flags); 105603e61f17Sblambert } 105703e61f17Sblambert 105803e61f17Sblambert void 105903e61f17Sblambert dump_fcgi_end_request_body(const char *p, struct fcgi_end_request_body *b) 106003e61f17Sblambert { 106103e61f17Sblambert ldebug("%sappStatus: %d", p, ntohl(b->app_status)); 106203e61f17Sblambert ldebug("%sprotocolStatus: %d", p, b->protocol_status); 106303e61f17Sblambert } 106403e61f17Sblambert 106503e61f17Sblambert void 10667ac15270Sflorian syslog_vstrerror(int e, int priority, const char *fmt, va_list ap) 10677ac15270Sflorian { 10687ac15270Sflorian char *s; 10697ac15270Sflorian 10707ac15270Sflorian if (vasprintf(&s, fmt, ap) == -1) { 10717ac15270Sflorian syslog(LOG_EMERG, "unable to alloc in syslog_vstrerror"); 10727ac15270Sflorian exit(1); 10737ac15270Sflorian } 10747ac15270Sflorian syslog(priority, "%s: %s", s, strerror(e)); 10757ac15270Sflorian free(s); 10767ac15270Sflorian } 10777ac15270Sflorian 10787ac15270Sflorian void 10797ac15270Sflorian syslog_err(int ecode, const char *fmt, ...) 10807ac15270Sflorian { 10817ac15270Sflorian va_list ap; 10827ac15270Sflorian 10837ac15270Sflorian va_start(ap, fmt); 10847ac15270Sflorian syslog_vstrerror(errno, LOG_EMERG, fmt, ap); 10857ac15270Sflorian va_end(ap); 10867ac15270Sflorian exit(ecode); 10877ac15270Sflorian } 10887ac15270Sflorian 10897ac15270Sflorian void 10907ac15270Sflorian syslog_errx(int ecode, const char *fmt, ...) 10917ac15270Sflorian { 10927ac15270Sflorian va_list ap; 10937ac15270Sflorian 10947ac15270Sflorian va_start(ap, fmt); 10957ac15270Sflorian vsyslog(LOG_WARNING, fmt, ap); 10967ac15270Sflorian va_end(ap); 10977ac15270Sflorian exit(ecode); 10987ac15270Sflorian } 10997ac15270Sflorian 11007ac15270Sflorian void 11017ac15270Sflorian syslog_warn(const char *fmt, ...) 11027ac15270Sflorian { 11037ac15270Sflorian va_list ap; 11047ac15270Sflorian 11057ac15270Sflorian va_start(ap, fmt); 11067ac15270Sflorian syslog_vstrerror(errno, LOG_WARNING, fmt, ap); 11077ac15270Sflorian va_end(ap); 11087ac15270Sflorian } 11097ac15270Sflorian 11107ac15270Sflorian void 11117ac15270Sflorian syslog_warnx(const char *fmt, ...) 11127ac15270Sflorian { 11137ac15270Sflorian va_list ap; 11147ac15270Sflorian 11157ac15270Sflorian va_start(ap, fmt); 11167ac15270Sflorian vsyslog(LOG_WARNING, fmt, ap); 11177ac15270Sflorian va_end(ap); 11187ac15270Sflorian } 11197ac15270Sflorian 11207ac15270Sflorian void 11217ac15270Sflorian syslog_info(const char *fmt, ...) 11227ac15270Sflorian { 11237ac15270Sflorian va_list ap; 11247ac15270Sflorian 11257ac15270Sflorian va_start(ap, fmt); 11267ac15270Sflorian vsyslog(LOG_INFO, fmt, ap); 11277ac15270Sflorian va_end(ap); 11287ac15270Sflorian } 11297ac15270Sflorian 11307ac15270Sflorian void 11317ac15270Sflorian syslog_debug(const char *fmt, ...) 11327ac15270Sflorian { 11337ac15270Sflorian va_list ap; 11347ac15270Sflorian 11357ac15270Sflorian if (!debug) 11367ac15270Sflorian return; 11377ac15270Sflorian 11387ac15270Sflorian va_start(ap, fmt); 11397ac15270Sflorian vsyslog(LOG_DEBUG, fmt, ap); 11407ac15270Sflorian va_end(ap); 11417ac15270Sflorian } 1142