From 3c5aafc0fb17f8b9bb48b1a20d26e4e9c11e889e Mon Sep 17 00:00:00 2001 From: Michael Krayer Date: Wed, 11 Oct 2023 10:28:18 +0200 Subject: [PATCH] renamed abduco to splex: the programs cannot be changed independently --- Makefile | 31 +- abduco.c | 718 -------------------------------------------- abduco.1 => splex.1 | 0 3 files changed, 15 insertions(+), 734 deletions(-) delete mode 100644 abduco.c rename abduco.1 => splex.1 (100%) diff --git a/Makefile b/Makefile index da62ca0..4198f47 100644 --- a/Makefile +++ b/Makefile @@ -13,7 +13,9 @@ INSTALL ?= install PREFIX ?= /usr/local SHAREDIR ?= ${PREFIX}/share -all: abduco splex +SRC = splex.c + +all: splex config.h: cp config.def.h config.h @@ -22,47 +24,44 @@ config.mk: @touch $@ splex: config.h config.mk splex.c client.c debug.c forkpty-aix.c forkpty-sunos.c server.c - ${CC} ${CFLAGS} ${CFLAGS_STD} ${CFLAGS_AUTO} ${CFLAGS_EXTRA} splex.c ${LDFLAGS} ${LDFLAGS_STD} ${LDFLAGS_AUTO} -o $@ - -abduco: config.h config.mk abduco.c client.c debug.c forkpty-aix.c forkpty-sunos.c server.c - ${CC} ${CFLAGS} ${CFLAGS_STD} ${CFLAGS_AUTO} ${CFLAGS_EXTRA} abduco.c ${LDFLAGS} ${LDFLAGS_STD} ${LDFLAGS_AUTO} -o $@ + ${CC} ${CFLAGS} ${CFLAGS_STD} ${CFLAGS_AUTO} ${CFLAGS_EXTRA} ${SRC} ${LDFLAGS} ${LDFLAGS_STD} ${LDFLAGS_AUTO} -o $@ debug: clean make CFLAGS_EXTRA='${CFLAGS_DEBUG}' clean: @echo cleaning - @rm -f abduco splex abduco-*.tar.gz + @rm -f splex splex splex-*.tar.gz dist: clean @echo creating dist tarball - @git archive --prefix=abduco-${VERSION}/ -o abduco-${VERSION}.tar.gz HEAD + @git archive --prefix=splex-${VERSION}/ -o splex-${VERSION}.tar.gz HEAD installdirs: @${INSTALL} -d ${DESTDIR}${PREFIX}/bin \ ${DESTDIR}${MANPREFIX}/man1 -install: abduco installdirs +install: splex installdirs @echo installing executable file to ${DESTDIR}${PREFIX}/bin - @${INSTALL} -m 0755 abduco ${DESTDIR}${PREFIX}/bin + @${INSTALL} -m 0755 splex ${DESTDIR}${PREFIX}/bin @echo installing manual page to ${DESTDIR}${MANPREFIX}/man1 @mkdir -p ${DESTDIR}${MANPREFIX}/man1 - @sed "s/VERSION/${VERSION}/g" < abduco.1 > ${DESTDIR}${MANPREFIX}/man1/abduco.1 - @chmod 644 ${DESTDIR}${MANPREFIX}/man1/abduco.1 + @sed "s/VERSION/${VERSION}/g" < splex.1 > ${DESTDIR}${MANPREFIX}/man1/splex.1 + @chmod 644 ${DESTDIR}${MANPREFIX}/man1/splex.1 install-strip: install - ${STRIP} ${DESTDIR}${PREFIX}/bin/abduco + ${STRIP} ${DESTDIR}${PREFIX}/bin/splex install-completion: @echo installing zsh completion file to ${DESTDIR}${SHAREDIR}/zsh/site-functions - @install -Dm644 contrib/abduco.zsh ${DESTDIR}${SHAREDIR}/zsh/site-functions/_abduco + @install -Dm644 contrib/splex.zsh ${DESTDIR}${SHAREDIR}/zsh/site-functions/_splex uninstall: @echo removing executable file from ${DESTDIR}${PREFIX}/bin - @rm -f ${DESTDIR}${PREFIX}/bin/abduco + @rm -f ${DESTDIR}${PREFIX}/bin/splex @echo removing manual page from ${DESTDIR}${MANPREFIX}/man1 - @rm -f ${DESTDIR}${MANPREFIX}/man1/abduco.1 + @rm -f ${DESTDIR}${MANPREFIX}/man1/splex.1 @echo removing zsh completion file from ${DESTDIR}${SHAREDIR}/zsh/site-functions - @rm -f ${DESTDIR}${SHAREDIR}/zsh/site-functions/_abduco + @rm -f ${DESTDIR}${SHAREDIR}/zsh/site-functions/_splex .PHONY: all clean dist install installdirs install-strip install-completion uninstall debug diff --git a/abduco.c b/abduco.c deleted file mode 100644 index b56e6f4..0000000 --- a/abduco.c +++ /dev/null @@ -1,718 +0,0 @@ -/* - * Copyright (c) 2013-2018 Marc André Tanner - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#if defined(__linux__) || defined(__CYGWIN__) -# include -#elif defined(__FreeBSD__) || defined(__DragonFly__) -# include -#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__) -# include -#endif - -#if defined CTRL && defined _AIX - #undef CTRL -#endif -#ifndef CTRL - #define CTRL(k) ((k) & 0x1F) -#endif - -#include "config.h" - -#if defined(_AIX) -# include "forkpty-aix.c" -#elif defined(__sun) -# include "forkpty-sunos.c" -#endif - -#define countof(arr) (sizeof(arr) / sizeof((arr)[0])) - -enum PacketType { - MSG_CONTENT = 0, - MSG_ATTACH = 1, - MSG_DETACH = 2, - MSG_RESIZE = 3, - MSG_EXIT = 4, - MSG_PID = 5, -}; - -typedef struct { - uint32_t type; - uint32_t len; - union { - char msg[4096 - 2*sizeof(uint32_t)]; - struct { - uint16_t rows; - uint16_t cols; - } ws; - uint32_t i; - uint64_t l; - } u; -} Packet; - -typedef struct Client Client; -struct Client { - int socket; - enum { - STATE_CONNECTED, - STATE_ATTACHED, - STATE_DETACHED, - STATE_DISCONNECTED, - } state; - bool need_resize; - enum { - CLIENT_READONLY = 1 << 0, - CLIENT_LOWPRIORITY = 1 << 1, - } flags; - Client *next; -}; - -typedef struct { - Client *clients; - int socket; - Packet pty_output; - int pty; - int exit_status; - struct termios term; - struct winsize winsize; - pid_t pid; - volatile sig_atomic_t running; - const char *name; - const char *session_name; - char host[255]; - bool read_pty; -} Server; - -static Server server = { .running = true, .exit_status = -1, .host = "@localhost" }; -static Client client; -static struct termios orig_term, cur_term; -static bool has_term, alternate_buffer, quiet, passthrough; - -static struct sockaddr_un sockaddr = { - .sun_family = AF_UNIX, -}; - -static bool set_socket_name(struct sockaddr_un *sockaddr, const char *name); -static void die(const char *s); -static void info(const char *str, ...); - -#include "debug.c" - -static inline size_t packet_header_size() { - return offsetof(Packet, u); -} - -static size_t packet_size(Packet *pkt) { - return packet_header_size() + pkt->len; -} - -static ssize_t write_all(int fd, const char *buf, size_t len) { - debug("write_all(%d)\n", len); - ssize_t ret = len; - while (len > 0) { - ssize_t res = write(fd, buf, len); - if (res < 0) { - if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR) - continue; - return -1; - } - if (res == 0) - return ret - len; - buf += res; - len -= res; - } - return ret; -} - -static ssize_t read_all(int fd, char *buf, size_t len) { - debug("read_all(%d)\n", len); - ssize_t ret = len; - while (len > 0) { - ssize_t res = read(fd, buf, len); - if (res < 0) { - if (errno == EWOULDBLOCK) - return ret - len; - if (errno == EAGAIN || errno == EINTR) - continue; - return -1; - } - if (res == 0) - return ret - len; - buf += res; - len -= res; - } - return ret; -} - -static bool send_packet(int socket, Packet *pkt) { - size_t size = packet_size(pkt); - if (size > sizeof(*pkt)) - return false; - return write_all(socket, (char *)pkt, size) == size; -} - -static bool recv_packet(int socket, Packet *pkt) { - ssize_t len = read_all(socket, (char*)pkt, packet_header_size()); - if (len <= 0 || len != packet_header_size()) - return false; - if (pkt->len > sizeof(pkt->u.msg)) { - pkt->len = 0; - return false; - } - if (pkt->len > 0) { - len = read_all(socket, pkt->u.msg, pkt->len); - if (len <= 0 || len != pkt->len) - return false; - } - return true; -} - -#include "client.c" -#include "server.c" - -static void info(const char *str, ...) { - va_list ap; - va_start(ap, str); - if (str && !quiet) { - fprintf(stderr, "%s: %s: ", server.name, server.session_name); - vfprintf(stderr, str, ap); - fprintf(stderr, "\r\n"); - fflush(stderr); - } - va_end(ap); -} - -static void die(const char *s) { - perror(s); - exit(EXIT_FAILURE); -} - -static void usage(void) { - fprintf(stderr, "usage: abduco [-a|-A|-c|-n] [-p] [-r] [-q] [-l] [-f] [-e detachkey] name command\n"); - exit(EXIT_FAILURE); -} - -static bool xsnprintf(char *buf, size_t size, const char *fmt, ...) { - va_list ap; - if (size > INT_MAX) - return false; - va_start(ap, fmt); - int n = vsnprintf(buf, size, fmt, ap); - va_end(ap); - if (n == -1) - return false; - if (n >= size) { - errno = ENAMETOOLONG; - return false; - } - return true; -} - -static int session_connect(const char *name) { - int fd; - struct stat sb; - if (!set_socket_name(&sockaddr, name) || (fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) - return -1; - socklen_t socklen = offsetof(struct sockaddr_un, sun_path) + strlen(sockaddr.sun_path) + 1; - if (connect(fd, (struct sockaddr*)&sockaddr, socklen) == -1) { - if (errno == ECONNREFUSED && stat(sockaddr.sun_path, &sb) == 0 && S_ISSOCK(sb.st_mode)) - unlink(sockaddr.sun_path); - close(fd); - return -1; - } - return fd; -} - -static pid_t session_exists(const char *name) { - Packet pkt; - pid_t pid = 0; - if ((server.socket = session_connect(name)) == -1) - return pid; - if (client_recv_packet(&pkt) && pkt.type == MSG_PID) - pid = pkt.u.l; - close(server.socket); - return pid; -} - -static bool session_alive(const char *name) { - struct stat sb; - return session_exists(name) && - stat(sockaddr.sun_path, &sb) == 0 && - S_ISSOCK(sb.st_mode) && (sb.st_mode & S_IXGRP) == 0; -} - -static bool create_socket_dir(struct sockaddr_un *sockaddr) { - sockaddr->sun_path[0] = '\0'; - int socketfd = socket(AF_UNIX, SOCK_STREAM, 0); - if (socketfd == -1) - return false; - - const size_t maxlen = sizeof(sockaddr->sun_path); - uid_t uid = getuid(); - struct passwd *pw = getpwuid(uid); - - for (unsigned int i = 0; i < countof(socket_dirs); i++) { - struct stat sb; - struct Dir *dir = &socket_dirs[i]; - bool ishome = false; - if (dir->env) { - dir->path = getenv(dir->env); - ishome = !strcmp(dir->env, "HOME"); - if (ishome && (!dir->path || !dir->path[0]) && pw) - dir->path = pw->pw_dir; - } - if (!dir->path || !dir->path[0]) - continue; - if (!xsnprintf(sockaddr->sun_path, maxlen, "%s/%s%s/", dir->path, ishome ? "." : "", server.name)) - continue; - mode_t mask = umask(0); - int r = mkdir(sockaddr->sun_path, dir->personal ? S_IRWXU : S_IRWXU|S_IRWXG|S_IRWXO|S_ISVTX); - umask(mask); - if (r != 0 && errno != EEXIST) - continue; - if (lstat(sockaddr->sun_path, &sb) != 0) - continue; - if (!S_ISDIR(sb.st_mode)) { - errno = ENOTDIR; - continue; - } - - size_t dirlen = strlen(sockaddr->sun_path); - if (!dir->personal) { - /* create subdirectory only accessible to user */ - if (pw && !xsnprintf(sockaddr->sun_path+dirlen, maxlen-dirlen, "%s/", pw->pw_name)) - continue; - if (!pw && !xsnprintf(sockaddr->sun_path+dirlen, maxlen-dirlen, "%d/", uid)) - continue; - if (mkdir(sockaddr->sun_path, S_IRWXU) != 0 && errno != EEXIST) - continue; - if (lstat(sockaddr->sun_path, &sb) != 0) - continue; - if (!S_ISDIR(sb.st_mode)) { - errno = ENOTDIR; - continue; - } - dirlen = strlen(sockaddr->sun_path); - } - - if (sb.st_uid != uid || sb.st_mode & (S_IRWXG|S_IRWXO)) { - errno = EACCES; - continue; - } - - if (!xsnprintf(sockaddr->sun_path+dirlen, maxlen-dirlen, ".abduco-%d", getpid())) - continue; - - socklen_t socklen = offsetof(struct sockaddr_un, sun_path) + strlen(sockaddr->sun_path) + 1; - if (bind(socketfd, (struct sockaddr*)sockaddr, socklen) == -1) - continue; - unlink(sockaddr->sun_path); - close(socketfd); - sockaddr->sun_path[dirlen] = '\0'; - return true; - } - - close(socketfd); - return false; -} - -static bool set_socket_name(struct sockaddr_un *sockaddr, const char *name) { - const size_t maxlen = sizeof(sockaddr->sun_path); - const char *session_name = NULL; - char buf[maxlen]; - - if (name[0] == '/') { - if (strlen(name) >= maxlen) { - errno = ENAMETOOLONG; - return false; - } - strncpy(sockaddr->sun_path, name, maxlen); - } else if (name[0] == '.' && (name[1] == '.' || name[1] == '/')) { - char *cwd = getcwd(buf, sizeof buf); - if (!cwd) - return false; - if (!xsnprintf(sockaddr->sun_path, maxlen, "%s/%s", cwd, name)) - return false; - } else { - if (!create_socket_dir(sockaddr)) - return false; - if (strlen(sockaddr->sun_path) + strlen(name) + strlen(server.host) >= maxlen) { - errno = ENAMETOOLONG; - return false; - } - session_name = name; - strncat(sockaddr->sun_path, name, maxlen - strlen(sockaddr->sun_path) - 1); - strncat(sockaddr->sun_path, server.host, maxlen - strlen(sockaddr->sun_path) - 1); - } - - if (!session_name) { - strncpy(buf, sockaddr->sun_path, sizeof buf); - session_name = basename(buf); - } - setenv("ABDUCO_SESSION", session_name, 1); - setenv("ABDUCO_SOCKET", sockaddr->sun_path, 1); - - return true; -} - -static bool create_session(const char *name, char * const argv[]) { - /* this uses the well known double fork strategy as described in section 1.7 of - * - * http://www.faqs.org/faqs/unix-faq/programmer/faq/ - * - * pipes are used for synchronization and error reporting i.e. the child sets - * the close on exec flag before calling execvp(3) the parent blocks on a read(2) - * in case of failure the error message is written to the pipe, success is - * indicated by EOF on the pipe. - */ - int client_pipe[2], server_pipe[2]; - pid_t pid; - char errormsg[255]; - struct sigaction sa; - - if (session_exists(name)) { - errno = EADDRINUSE; - return false; - } - - if (pipe(client_pipe) == -1) - return false; - if ((server.socket = server_create_socket(name)) == -1) - return false; - - switch ((pid = fork())) { - case 0: /* child process */ - setsid(); - close(client_pipe[0]); - switch ((pid = fork())) { - case 0: /* child process */ - if (pipe(server_pipe) == -1) { - snprintf(errormsg, sizeof(errormsg), "server-pipe: %s\n", strerror(errno)); - write_all(client_pipe[1], errormsg, strlen(errormsg)); - close(client_pipe[1]); - _exit(EXIT_FAILURE); - } - sa.sa_flags = 0; - sigemptyset(&sa.sa_mask); - sa.sa_handler = server_pty_died_handler; - sigaction(SIGCHLD, &sa, NULL); - switch (server.pid = forkpty(&server.pty, NULL, has_term ? &server.term : NULL, &server.winsize)) { - case 0: /* child = user application process */ - close(server.socket); - close(server_pipe[0]); - if (fcntl(client_pipe[1], F_SETFD, FD_CLOEXEC) == 0 && - fcntl(server_pipe[1], F_SETFD, FD_CLOEXEC) == 0) - execvp(argv[0], argv); - snprintf(errormsg, sizeof(errormsg), "server-execvp: %s: %s\n", - argv[0], strerror(errno)); - write_all(client_pipe[1], errormsg, strlen(errormsg)); - write_all(server_pipe[1], errormsg, strlen(errormsg)); - close(client_pipe[1]); - close(server_pipe[1]); - _exit(EXIT_FAILURE); - break; - case -1: /* forkpty failed */ - snprintf(errormsg, sizeof(errormsg), "server-forkpty: %s\n", strerror(errno)); - write_all(client_pipe[1], errormsg, strlen(errormsg)); - close(client_pipe[1]); - close(server_pipe[0]); - close(server_pipe[1]); - _exit(EXIT_FAILURE); - break; - default: /* parent = server process */ - sa.sa_handler = server_sigterm_handler; - sigaction(SIGTERM, &sa, NULL); - sigaction(SIGINT, &sa, NULL); - sa.sa_handler = server_sigusr1_handler; - sigaction(SIGUSR1, &sa, NULL); - sa.sa_handler = SIG_IGN; - sigaction(SIGPIPE, &sa, NULL); - sigaction(SIGHUP, &sa, NULL); - if (chdir("/") == -1) - _exit(EXIT_FAILURE); - #ifdef NDEBUG - int fd = open("/dev/null", O_RDWR); - if (fd != -1) { - dup2(fd, STDIN_FILENO); - dup2(fd, STDOUT_FILENO); - dup2(fd, STDERR_FILENO); - close(fd); - } - #endif /* NDEBUG */ - close(client_pipe[1]); - close(server_pipe[1]); - if (read_all(server_pipe[0], errormsg, sizeof(errormsg)) > 0) - _exit(EXIT_FAILURE); - close(server_pipe[0]); - server_mainloop(); - break; - } - break; - case -1: /* fork failed */ - snprintf(errormsg, sizeof(errormsg), "server-fork: %s\n", strerror(errno)); - write_all(client_pipe[1], errormsg, strlen(errormsg)); - close(client_pipe[1]); - _exit(EXIT_FAILURE); - break; - default: /* parent = intermediate process */ - close(client_pipe[1]); - _exit(EXIT_SUCCESS); - break; - } - break; - case -1: /* fork failed */ - close(client_pipe[0]); - close(client_pipe[1]); - return false; - default: /* parent = client process */ - close(client_pipe[1]); - while (waitpid(pid, NULL, 0) == -1 && errno == EINTR); - ssize_t len = read_all(client_pipe[0], errormsg, sizeof(errormsg)); - if (len > 0) { - write_all(STDERR_FILENO, errormsg, len); - unlink(sockaddr.sun_path); - exit(EXIT_FAILURE); - } - close(client_pipe[0]); - } - return true; -} - -static bool attach_session(const char *name, const bool terminate) { - if (server.socket > 0) - close(server.socket); - if ((server.socket = session_connect(name)) == -1) - return false; - if (server_set_socket_non_blocking(server.socket) == -1) - return false; - - struct sigaction sa; - sa.sa_flags = 0; - sigemptyset(&sa.sa_mask); - sa.sa_handler = client_sigwinch_handler; - sigaction(SIGWINCH, &sa, NULL); - sa.sa_handler = SIG_IGN; - sigaction(SIGPIPE, &sa, NULL); - - client_setup_terminal(); - int status = client_mainloop(); - client_restore_terminal(); - if (status == -1) { - info("detached"); - } else if (status == -EIO) { - info("exited due to I/O errors"); - } else { - info("session terminated with exit status %d", status); - if (terminate) - exit(status); - } - - return terminate; -} - -static int session_filter(const struct dirent *d) { - return strstr(d->d_name, server.host) != NULL; -} - -static int session_comparator(const struct dirent **a, const struct dirent **b) { - struct stat sa, sb; - if (stat((*a)->d_name, &sa) != 0) - return -1; - if (stat((*b)->d_name, &sb) != 0) - return 1; - return sa.st_atime < sb.st_atime ? -1 : 1; -} - -static int list_session(void) { - if (!create_socket_dir(&sockaddr)) - return 1; - if (chdir(sockaddr.sun_path) == -1) - die("list-session"); - struct dirent **namelist; - int n = scandir(sockaddr.sun_path, &namelist, session_filter, session_comparator); - if (n < 0) - return 1; - printf("Active sessions (on host %s)\n", server.host+1); - while (n--) { - struct stat sb; char buf[255]; - if (stat(namelist[n]->d_name, &sb) == 0 && S_ISSOCK(sb.st_mode)) { - pid_t pid = 0; - strftime(buf, sizeof(buf), "%a%t %F %T", localtime(&sb.st_mtime)); - char status = ' '; - char *local = strstr(namelist[n]->d_name, server.host); - if (local) { - *local = '\0'; /* truncate hostname if we are local */ - if (!(pid = session_exists(namelist[n]->d_name))) - continue; - } - if (sb.st_mode & S_IXUSR) - status = '*'; - else if (sb.st_mode & S_IXGRP) - status = '+'; - printf("%c %s\t%jd\t%s\n", status, buf, (intmax_t)pid, namelist[n]->d_name); - } - free(namelist[n]); - } - free(namelist); - return 0; -} - -int main(int argc, char *argv[]) { - int opt; - bool force = false; - char **cmd = NULL, action = '\0'; - - char *default_cmd[4] = { "/bin/sh", "-c", getenv("ABDUCO_CMD"), NULL }; - if (!default_cmd[2]) { - default_cmd[0] = ABDUCO_CMD; - default_cmd[1] = NULL; - } - - server.name = basename(argv[0]); - gethostname(server.host+1, sizeof(server.host) - 1); - - while ((opt = getopt(argc, argv, "aAclne:fpqrv")) != -1) { - switch (opt) { - case 'a': - case 'A': - case 'c': - case 'n': - action = opt; - break; - case 'e': - if (!optarg) - usage(); - if (optarg[0] == '^' && optarg[1]) - optarg[0] = CTRL(optarg[1]); - KEY_DETACH = optarg[0]; - break; - case 'f': - force = true; - break; - case 'p': - passthrough = true; - break; - case 'q': - quiet = true; - break; - case 'r': - client.flags |= CLIENT_READONLY; - break; - case 'l': - client.flags |= CLIENT_LOWPRIORITY; - break; - case 'v': - puts("abduco-"VERSION" © 2013-2018 Marc André Tanner"); - exit(EXIT_SUCCESS); - default: - usage(); - } - } - - /* collect the session name if trailing args */ - if (optind < argc) - server.session_name = argv[optind]; - - /* if yet more trailing arguments, they must be the command */ - if (optind + 1 < argc) - cmd = &argv[optind + 1]; - else - cmd = default_cmd; - - if (server.session_name && !isatty(STDIN_FILENO)) - passthrough = true; - - if (passthrough) { - if (!action) - action = 'a'; - quiet = true; - client.flags |= CLIENT_LOWPRIORITY; - } - - if (!action && !server.session_name) - exit(list_session()); - if (!action || !server.session_name) - usage(); - - if (!passthrough && tcgetattr(STDIN_FILENO, &orig_term) != -1) { - server.term = orig_term; - has_term = true; - } - - if (ioctl(STDIN_FILENO, TIOCGWINSZ, &server.winsize) == -1) { - server.winsize.ws_col = 80; - server.winsize.ws_row = 25; - } - - server.read_pty = (action == 'n'); - - redo: - switch (action) { - case 'n': - case 'c': - if (force) { - if (session_alive(server.session_name)) { - info("session exists and has not yet terminated"); - return 1; - } - if (session_exists(server.session_name)) - attach_session(server.session_name, false); - } - if (!create_session(server.session_name, cmd)) - die("create-session"); - if (action == 'n') - break; - /* fall through */ - case 'a': - if (!attach_session(server.session_name, true)) - die("attach-session"); - break; - case 'A': - if (session_alive(server.session_name)) { - if (!attach_session(server.session_name, true)) - die("attach-session"); - } else if (!attach_session(server.session_name, !force)) { - force = false; - action = 'c'; - goto redo; - } - break; - } - - return 0; -} diff --git a/abduco.1 b/splex.1 similarity index 100% rename from abduco.1 rename to splex.1