Mercurial > vim
view src/channel.c @ 11687:04684dddfe9a
Added tag v8.0.0726 for changeset 325a1dbf662da305bb1ed79448794666db8af36b
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 16 Jul 2017 20:45:04 +0200 |
| parents | 3c6cc2f24645 |
| children | ce434212d682 |
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/* vi:set ts=8 sts=4 sw=4 noet: * * VIM - Vi IMproved by Bram Moolenaar * * Do ":help uganda" in Vim to read copying and usage conditions. * Do ":help credits" in Vim to see a list of people who contributed. */ /* * Implements communication through a socket or any file handle. */ #include "vim.h" #if defined(FEAT_JOB_CHANNEL) || defined(PROTO) /* TRUE when netbeans is running with a GUI. */ #ifdef FEAT_GUI # define CH_HAS_GUI (gui.in_use || gui.starting) #endif /* Note: when making changes here also adjust configure.ac. */ #ifdef WIN32 /* WinSock API is separated from C API, thus we can't use read(), write(), * errno... */ # define SOCK_ERRNO errno = WSAGetLastError() # undef ECONNREFUSED # define ECONNREFUSED WSAECONNREFUSED # undef EWOULDBLOCK # define EWOULDBLOCK WSAEWOULDBLOCK # undef EINPROGRESS # define EINPROGRESS WSAEINPROGRESS # ifdef EINTR # undef EINTR # endif # define EINTR WSAEINTR # define sock_write(sd, buf, len) send((SOCKET)sd, buf, len, 0) # define sock_read(sd, buf, len) recv((SOCKET)sd, buf, len, 0) # define sock_close(sd) closesocket((SOCKET)sd) #else # include <netdb.h> # include <netinet/in.h> # include <sys/socket.h> # ifdef HAVE_LIBGEN_H # include <libgen.h> # endif # define SOCK_ERRNO # define sock_write(sd, buf, len) write(sd, buf, len) # define sock_read(sd, buf, len) read(sd, buf, len) # define sock_close(sd) close(sd) # define fd_read(fd, buf, len) read(fd, buf, len) # define fd_write(sd, buf, len) write(sd, buf, len) # define fd_close(sd) close(sd) #endif static void channel_read(channel_T *channel, ch_part_T part, char *func); /* Whether a redraw is needed for appending a line to a buffer. */ static int channel_need_redraw = FALSE; /* Whether we are inside channel_parse_messages() or another situation where it * is safe to invoke callbacks. */ static int safe_to_invoke_callback = 0; static char *part_names[] = {"sock", "out", "err", "in"}; #ifdef WIN32 static int fd_read(sock_T fd, char *buf, size_t len) { HANDLE h = (HANDLE)fd; DWORD nread; if (!ReadFile(h, buf, (DWORD)len, &nread, NULL)) return -1; return (int)nread; } static int fd_write(sock_T fd, char *buf, size_t len) { HANDLE h = (HANDLE)fd; DWORD nwrite; if (!WriteFile(h, buf, (DWORD)len, &nwrite, NULL)) return -1; return (int)nwrite; } static void fd_close(sock_T fd) { HANDLE h = (HANDLE)fd; CloseHandle(h); } #endif /* Log file opened with ch_logfile(). */ static FILE *log_fd = NULL; #ifdef FEAT_RELTIME static proftime_T log_start; #endif void ch_logfile(char_u *fname, char_u *opt) { FILE *file = NULL; if (log_fd != NULL) fclose(log_fd); if (*fname != NUL) { file = fopen((char *)fname, *opt == 'w' ? "w" : "a"); if (file == NULL) { EMSG2(_(e_notopen), fname); return; } } log_fd = file; if (log_fd != NULL) { fprintf(log_fd, "==== start log session ====\n"); #ifdef FEAT_RELTIME profile_start(&log_start); #endif } } int ch_log_active(void) { return log_fd != NULL; } static void ch_log_lead(char *what, channel_T *ch) { if (log_fd != NULL) { #ifdef FEAT_RELTIME proftime_T log_now; profile_start(&log_now); profile_sub(&log_now, &log_start); fprintf(log_fd, "%s ", profile_msg(&log_now)); #endif if (ch != NULL) fprintf(log_fd, "%son %d: ", what, ch->ch_id); else fprintf(log_fd, "%s: ", what); } } static int did_log_msg = TRUE; void ch_log(channel_T *ch, char *msg) { if (log_fd != NULL) { ch_log_lead("", ch); fputs(msg, log_fd); fputc('\n', log_fd); fflush(log_fd); did_log_msg = TRUE; } } void ch_logn(channel_T *ch, char *msg, int nr) { if (log_fd != NULL) { ch_log_lead("", ch); fprintf(log_fd, msg, nr); fputc('\n', log_fd); fflush(log_fd); did_log_msg = TRUE; } } void ch_logs(channel_T *ch, char *msg, char *name) { if (log_fd != NULL) { ch_log_lead("", ch); fprintf(log_fd, msg, name); fputc('\n', log_fd); fflush(log_fd); did_log_msg = TRUE; } } static void ch_logsn(channel_T *ch, char *msg, char *name, int nr) { if (log_fd != NULL) { ch_log_lead("", ch); fprintf(log_fd, msg, name, nr); fputc('\n', log_fd); fflush(log_fd); did_log_msg = TRUE; } } static void ch_error(channel_T *ch, char *msg) { if (log_fd != NULL) { ch_log_lead("ERR ", ch); fputs(msg, log_fd); fputc('\n', log_fd); fflush(log_fd); did_log_msg = TRUE; } } static void ch_errorn(channel_T *ch, char *msg, int nr) { if (log_fd != NULL) { ch_log_lead("ERR ", ch); fprintf(log_fd, msg, nr); fputc('\n', log_fd); fflush(log_fd); did_log_msg = TRUE; } } static void ch_errors(channel_T *ch, char *msg, char *arg) { if (log_fd != NULL) { ch_log_lead("ERR ", ch); fprintf(log_fd, msg, arg); fputc('\n', log_fd); fflush(log_fd); did_log_msg = TRUE; } } #ifdef _WIN32 # undef PERROR # define PERROR(msg) (void)emsg3((char_u *)"%s: %s", \ (char_u *)msg, (char_u *)strerror_win32(errno)) static char * strerror_win32(int eno) { static LPVOID msgbuf = NULL; char_u *ptr; if (msgbuf) { LocalFree(msgbuf); msgbuf = NULL; } FormatMessage( FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, eno, MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT), (LPTSTR) &msgbuf, 0, NULL); if (msgbuf != NULL) /* chomp \r or \n */ for (ptr = (char_u *)msgbuf; *ptr; ptr++) switch (*ptr) { case '\r': STRMOVE(ptr, ptr + 1); ptr--; break; case '\n': if (*(ptr + 1) == '\0') *ptr = '\0'; else *ptr = ' '; break; } return msgbuf; } #endif /* * The list of all allocated channels. */ static channel_T *first_channel = NULL; static int next_ch_id = 0; /* * Allocate a new channel. The refcount is set to 1. * The channel isn't actually used until it is opened. * Returns NULL if out of memory. */ channel_T * add_channel(void) { ch_part_T part; channel_T *channel = (channel_T *)alloc_clear((int)sizeof(channel_T)); if (channel == NULL) return NULL; channel->ch_id = next_ch_id++; ch_log(channel, "Created channel"); for (part = PART_SOCK; part < PART_COUNT; ++part) { channel->ch_part[part].ch_fd = INVALID_FD; #ifdef FEAT_GUI_X11 channel->ch_part[part].ch_inputHandler = (XtInputId)NULL; #endif #ifdef FEAT_GUI_GTK channel->ch_part[part].ch_inputHandler = 0; #endif channel->ch_part[part].ch_timeout = 2000; } if (first_channel != NULL) { first_channel->ch_prev = channel; channel->ch_next = first_channel; } first_channel = channel; channel->ch_refcount = 1; return channel; } int has_any_channel(void) { return first_channel != NULL; } /* * Called when the refcount of a channel is zero. * Return TRUE if "channel" has a callback and the associated job wasn't * killed. */ static int channel_still_useful(channel_T *channel) { int has_sock_msg; int has_out_msg; int has_err_msg; /* If the job was killed the channel is not expected to work anymore. */ if (channel->ch_job_killed && channel->ch_job == NULL) return FALSE; /* If there is a close callback it may still need to be invoked. */ if (channel->ch_close_cb != NULL) return TRUE; /* If reading from or a buffer it's still useful. */ if (channel->ch_part[PART_IN].ch_bufref.br_buf != NULL) return TRUE; /* If there is no callback then nobody can get readahead. If the fd is * closed and there is no readahead then the callback won't be called. */ has_sock_msg = channel->ch_part[PART_SOCK].ch_fd != INVALID_FD || channel->ch_part[PART_SOCK].ch_head.rq_next != NULL || channel->ch_part[PART_SOCK].ch_json_head.jq_next != NULL; has_out_msg = channel->ch_part[PART_OUT].ch_fd != INVALID_FD || channel->ch_part[PART_OUT].ch_head.rq_next != NULL || channel->ch_part[PART_OUT].ch_json_head.jq_next != NULL; has_err_msg = channel->ch_part[PART_ERR].ch_fd != INVALID_FD || channel->ch_part[PART_ERR].ch_head.rq_next != NULL || channel->ch_part[PART_ERR].ch_json_head.jq_next != NULL; return (channel->ch_callback != NULL && (has_sock_msg || has_out_msg || has_err_msg)) || ((channel->ch_part[PART_OUT].ch_callback != NULL || channel->ch_part[PART_OUT].ch_bufref.br_buf != NULL) && has_out_msg) || ((channel->ch_part[PART_ERR].ch_callback != NULL || channel->ch_part[PART_ERR].ch_bufref.br_buf != NULL) && has_err_msg); } /* * Close a channel and free all its resources. */ static void channel_free_contents(channel_T *channel) { channel_close(channel, TRUE); channel_clear(channel); ch_log(channel, "Freeing channel"); } static void channel_free_channel(channel_T *channel) { if (channel->ch_next != NULL) channel->ch_next->ch_prev = channel->ch_prev; if (channel->ch_prev == NULL) first_channel = channel->ch_next; else channel->ch_prev->ch_next = channel->ch_next; vim_free(channel); } static void channel_free(channel_T *channel) { if (!in_free_unref_items) { if (safe_to_invoke_callback == 0) channel->ch_to_be_freed = TRUE; else { channel_free_contents(channel); channel_free_channel(channel); } } } /* * Close a channel and free all its resources if there is no further action * possible, there is no callback to be invoked or the associated job was * killed. * Return TRUE if the channel was freed. */ static int channel_may_free(channel_T *channel) { if (!channel_still_useful(channel)) { channel_free(channel); return TRUE; } return FALSE; } /* * Decrement the reference count on "channel" and maybe free it when it goes * down to zero. Don't free it if there is a pending action. * Returns TRUE when the channel is no longer referenced. */ int channel_unref(channel_T *channel) { if (channel != NULL && --channel->ch_refcount <= 0) return channel_may_free(channel); return FALSE; } int free_unused_channels_contents(int copyID, int mask) { int did_free = FALSE; channel_T *ch; /* This is invoked from the garbage collector, which only runs at a safe * point. */ ++safe_to_invoke_callback; for (ch = first_channel; ch != NULL; ch = ch->ch_next) if (!channel_still_useful(ch) && (ch->ch_copyID & mask) != (copyID & mask)) { /* Free the channel and ordinary items it contains, but don't * recurse into Lists, Dictionaries etc. */ channel_free_contents(ch); did_free = TRUE; } --safe_to_invoke_callback; return did_free; } void free_unused_channels(int copyID, int mask) { channel_T *ch; channel_T *ch_next; for (ch = first_channel; ch != NULL; ch = ch_next) { ch_next = ch->ch_next; if (!channel_still_useful(ch) && (ch->ch_copyID & mask) != (copyID & mask)) { /* Free the channel struct itself. */ channel_free_channel(ch); } } } #if defined(FEAT_GUI) || defined(PROTO) #if defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK) static void channel_read_fd(int fd) { channel_T *channel; ch_part_T part; channel = channel_fd2channel(fd, &part); if (channel == NULL) ch_errorn(NULL, "Channel for fd %d not found", fd); else channel_read(channel, part, "channel_read_fd"); } #endif /* * Read a command from netbeans. */ #ifdef FEAT_GUI_X11 static void messageFromServer(XtPointer clientData, int *unused1 UNUSED, XtInputId *unused2 UNUSED) { channel_read_fd((int)(long)clientData); } #endif #ifdef FEAT_GUI_GTK # if GTK_CHECK_VERSION(3,0,0) static gboolean messageFromServer(GIOChannel *unused1 UNUSED, GIOCondition unused2 UNUSED, gpointer clientData) { channel_read_fd(GPOINTER_TO_INT(clientData)); return TRUE; /* Return FALSE instead in case the event source is to * be removed after this function returns. */ } # else static void messageFromServer(gpointer clientData, gint unused1 UNUSED, GdkInputCondition unused2 UNUSED) { channel_read_fd((int)(long)clientData); } # endif #endif static void channel_gui_register_one(channel_T *channel, ch_part_T part) { if (!CH_HAS_GUI) return; # ifdef FEAT_GUI_X11 /* Tell notifier we are interested in being called * when there is input on the editor connection socket. */ if (channel->ch_part[part].ch_inputHandler == (XtInputId)NULL) channel->ch_part[part].ch_inputHandler = XtAppAddInput( (XtAppContext)app_context, channel->ch_part[part].ch_fd, (XtPointer)(XtInputReadMask + XtInputExceptMask), messageFromServer, (XtPointer)(long)channel->ch_part[part].ch_fd); # else # ifdef FEAT_GUI_GTK /* Tell gdk we are interested in being called when there * is input on the editor connection socket. */ if (channel->ch_part[part].ch_inputHandler == 0) # if GTK_CHECK_VERSION(3,0,0) { GIOChannel *chnnl = g_io_channel_unix_new( (gint)channel->ch_part[part].ch_fd); channel->ch_part[part].ch_inputHandler = g_io_add_watch( chnnl, G_IO_IN|G_IO_HUP|G_IO_ERR|G_IO_PRI, messageFromServer, GINT_TO_POINTER(channel->ch_part[part].ch_fd)); g_io_channel_unref(chnnl); } # else channel->ch_part[part].ch_inputHandler = gdk_input_add( (gint)channel->ch_part[part].ch_fd, (GdkInputCondition) ((int)GDK_INPUT_READ + (int)GDK_INPUT_EXCEPTION), messageFromServer, (gpointer)(long)channel->ch_part[part].ch_fd); # endif # endif # endif } static void channel_gui_register(channel_T *channel) { if (channel->CH_SOCK_FD != INVALID_FD) channel_gui_register_one(channel, PART_SOCK); if (channel->CH_OUT_FD != INVALID_FD) channel_gui_register_one(channel, PART_OUT); if (channel->CH_ERR_FD != INVALID_FD) channel_gui_register_one(channel, PART_ERR); } /* * Register any of our file descriptors with the GUI event handling system. * Called when the GUI has started. */ void channel_gui_register_all(void) { channel_T *channel; for (channel = first_channel; channel != NULL; channel = channel->ch_next) channel_gui_register(channel); } static void channel_gui_unregister_one(channel_T *channel, ch_part_T part) { # ifdef FEAT_GUI_X11 if (channel->ch_part[part].ch_inputHandler != (XtInputId)NULL) { XtRemoveInput(channel->ch_part[part].ch_inputHandler); channel->ch_part[part].ch_inputHandler = (XtInputId)NULL; } # else # ifdef FEAT_GUI_GTK if (channel->ch_part[part].ch_inputHandler != 0) { # if GTK_CHECK_VERSION(3,0,0) g_source_remove(channel->ch_part[part].ch_inputHandler); # else gdk_input_remove(channel->ch_part[part].ch_inputHandler); # endif channel->ch_part[part].ch_inputHandler = 0; } # endif # endif } static void channel_gui_unregister(channel_T *channel) { ch_part_T part; for (part = PART_SOCK; part < PART_IN; ++part) channel_gui_unregister_one(channel, part); } #endif static char *e_cannot_connect = N_("E902: Cannot connect to port"); /* * Open a socket channel to "hostname":"port". * "waittime" is the time in msec to wait for the connection. * When negative wait forever. * Returns the channel for success. * Returns NULL for failure. */ channel_T * channel_open( char *hostname, int port_in, int waittime, void (*nb_close_cb)(void)) { int sd = -1; struct sockaddr_in server; struct hostent *host; #ifdef WIN32 u_short port = port_in; u_long val = 1; #else int port = port_in; #endif channel_T *channel; int ret; #ifdef WIN32 channel_init_winsock(); #endif channel = add_channel(); if (channel == NULL) { ch_error(NULL, "Cannot allocate channel."); return NULL; } /* Get the server internet address and put into addr structure */ /* fill in the socket address structure and connect to server */ vim_memset((char *)&server, 0, sizeof(server)); server.sin_family = AF_INET; server.sin_port = htons(port); if ((host = gethostbyname(hostname)) == NULL) { ch_error(channel, "in gethostbyname() in channel_open()"); PERROR(_("E901: gethostbyname() in channel_open()")); channel_free(channel); return NULL; } { char *p; /* When using host->h_addr directly ubsan warns for it to not be * aligned. First copy the pointer to aviod that. */ memcpy(&p, &host->h_addr, sizeof(p)); memcpy((char *)&server.sin_addr, p, host->h_length); } /* On Mac and Solaris a zero timeout almost never works. At least wait * one millisecond. Let's do it for all systems, because we don't know why * this is needed. */ if (waittime == 0) waittime = 1; /* * For Unix we need to call connect() again after connect() failed. * On Win32 one time is sufficient. */ while (TRUE) { long elapsed_msec = 0; int waitnow; if (sd >= 0) sock_close(sd); sd = socket(AF_INET, SOCK_STREAM, 0); if (sd == -1) { ch_error(channel, "in socket() in channel_open()."); PERROR(_("E898: socket() in channel_open()")); channel_free(channel); return NULL; } if (waittime >= 0) { /* Make connect() non-blocking. */ if ( #ifdef _WIN32 ioctlsocket(sd, FIONBIO, &val) < 0 #else fcntl(sd, F_SETFL, O_NONBLOCK) < 0 #endif ) { SOCK_ERRNO; ch_errorn(channel, "channel_open: Connect failed with errno %d", errno); sock_close(sd); channel_free(channel); return NULL; } } /* Try connecting to the server. */ ch_logsn(channel, "Connecting to %s port %d", hostname, port); ret = connect(sd, (struct sockaddr *)&server, sizeof(server)); if (ret == 0) /* The connection could be established. */ break; SOCK_ERRNO; if (waittime < 0 || (errno != EWOULDBLOCK && errno != ECONNREFUSED #ifdef EINPROGRESS && errno != EINPROGRESS #endif )) { ch_errorn(channel, "channel_open: Connect failed with errno %d", errno); PERROR(_(e_cannot_connect)); sock_close(sd); channel_free(channel); return NULL; } /* Limit the waittime to 50 msec. If it doesn't work within this * time we close the socket and try creating it again. */ waitnow = waittime > 50 ? 50 : waittime; /* If connect() didn't finish then try using select() to wait for the * connection to be made. For Win32 always use select() to wait. */ #ifndef WIN32 if (errno != ECONNREFUSED) #endif { struct timeval tv; fd_set rfds; fd_set wfds; #ifndef WIN32 int so_error = 0; socklen_t so_error_len = sizeof(so_error); struct timeval start_tv; struct timeval end_tv; #endif FD_ZERO(&rfds); FD_SET(sd, &rfds); FD_ZERO(&wfds); FD_SET(sd, &wfds); tv.tv_sec = waitnow / 1000; tv.tv_usec = (waitnow % 1000) * 1000; #ifndef WIN32 gettimeofday(&start_tv, NULL); #endif ch_logn(channel, "Waiting for connection (waiting %d msec)...", waitnow); ret = select((int)sd + 1, &rfds, &wfds, NULL, &tv); if (ret < 0) { SOCK_ERRNO; ch_errorn(channel, "channel_open: Connect failed with errno %d", errno); PERROR(_(e_cannot_connect)); sock_close(sd); channel_free(channel); return NULL; } #ifdef WIN32 /* On Win32: select() is expected to work and wait for up to * "waitnow" msec for the socket to be open. */ if (FD_ISSET(sd, &wfds)) break; elapsed_msec = waitnow; if (waittime > 1 && elapsed_msec < waittime) { waittime -= elapsed_msec; continue; } #else /* On Linux-like systems: See socket(7) for the behavior * After putting the socket in non-blocking mode, connect() will * return EINPROGRESS, select() will not wait (as if writing is * possible), need to use getsockopt() to check if the socket is * actually able to connect. * We detect a failure to connect when either read and write fds * are set. Use getsockopt() to find out what kind of failure. */ if (FD_ISSET(sd, &rfds) || FD_ISSET(sd, &wfds)) { ret = getsockopt(sd, SOL_SOCKET, SO_ERROR, &so_error, &so_error_len); if (ret < 0 || (so_error != 0 && so_error != EWOULDBLOCK && so_error != ECONNREFUSED # ifdef EINPROGRESS && so_error != EINPROGRESS # endif )) { ch_errorn(channel, "channel_open: Connect failed with errno %d", so_error); PERROR(_(e_cannot_connect)); sock_close(sd); channel_free(channel); return NULL; } } if (FD_ISSET(sd, &wfds) && so_error == 0) /* Did not detect an error, connection is established. */ break; gettimeofday(&end_tv, NULL); elapsed_msec = (end_tv.tv_sec - start_tv.tv_sec) * 1000 + (end_tv.tv_usec - start_tv.tv_usec) / 1000; #endif } #ifndef WIN32 if (waittime > 1 && elapsed_msec < waittime) { /* The port isn't ready but we also didn't get an error. * This happens when the server didn't open the socket * yet. Select() may return early, wait until the remaining * "waitnow" and try again. */ waitnow -= elapsed_msec; waittime -= elapsed_msec; if (waitnow > 0) { mch_delay((long)waitnow, TRUE); ui_breakcheck(); waittime -= waitnow; } if (!got_int) { if (waittime <= 0) /* give it one more try */ waittime = 1; continue; } /* we were interrupted, behave as if timed out */ } #endif /* We timed out. */ ch_error(channel, "Connection timed out"); sock_close(sd); channel_free(channel); return NULL; } ch_log(channel, "Connection made"); if (waittime >= 0) { #ifdef _WIN32 val = 0; ioctlsocket(sd, FIONBIO, &val); #else (void)fcntl(sd, F_SETFL, 0); #endif } channel->CH_SOCK_FD = (sock_T)sd; channel->ch_nb_close_cb = nb_close_cb; channel->ch_hostname = (char *)vim_strsave((char_u *)hostname); channel->ch_port = port_in; channel->ch_to_be_closed |= (1 << PART_SOCK); #ifdef FEAT_GUI channel_gui_register_one(channel, PART_SOCK); #endif return channel; } /* * Implements ch_open(). */ channel_T * channel_open_func(typval_T *argvars) { char_u *address; char_u *p; char *rest; int port; jobopt_T opt; channel_T *channel = NULL; address = get_tv_string(&argvars[0]); if (argvars[1].v_type != VAR_UNKNOWN && (argvars[1].v_type != VAR_DICT || argvars[1].vval.v_dict == NULL)) { EMSG(_(e_invarg)); return NULL; } /* parse address */ p = vim_strchr(address, ':'); if (p == NULL) { EMSG2(_(e_invarg2), address); return NULL; } *p++ = NUL; port = strtol((char *)p, &rest, 10); if (*address == NUL || port <= 0 || *rest != NUL) { p[-1] = ':'; EMSG2(_(e_invarg2), address); return NULL; } /* parse options */ clear_job_options(&opt); opt.jo_mode = MODE_JSON; opt.jo_timeout = 2000; if (get_job_options(&argvars[1], &opt, JO_MODE_ALL + JO_CB_ALL + JO_WAITTIME + JO_TIMEOUT_ALL) == FAIL) goto theend; if (opt.jo_timeout < 0) { EMSG(_(e_invarg)); goto theend; } channel = channel_open((char *)address, port, opt.jo_waittime, NULL); if (channel != NULL) { opt.jo_set = JO_ALL; channel_set_options(channel, &opt); } theend: free_job_options(&opt); return channel; } static void ch_close_part(channel_T *channel, ch_part_T part) { sock_T *fd = &channel->ch_part[part].ch_fd; if (*fd != INVALID_FD) { if (part == PART_SOCK) sock_close(*fd); else fd_close(*fd); *fd = INVALID_FD; channel->ch_to_be_closed &= ~(1 << part); } } void channel_set_pipes(channel_T *channel, sock_T in, sock_T out, sock_T err) { if (in != INVALID_FD) { ch_close_part(channel, PART_IN); channel->CH_IN_FD = in; } if (out != INVALID_FD) { # if defined(FEAT_GUI) channel_gui_unregister_one(channel, PART_OUT); # endif ch_close_part(channel, PART_OUT); channel->CH_OUT_FD = out; channel->ch_to_be_closed |= (1 << PART_OUT); # if defined(FEAT_GUI) channel_gui_register_one(channel, PART_OUT); # endif } if (err != INVALID_FD) { # if defined(FEAT_GUI) channel_gui_unregister_one(channel, PART_ERR); # endif ch_close_part(channel, PART_ERR); channel->CH_ERR_FD = err; channel->ch_to_be_closed |= (1 << PART_ERR); # if defined(FEAT_GUI) channel_gui_register_one(channel, PART_ERR); # endif } } /* * Sets the job the channel is associated with and associated options. * This does not keep a refcount, when the job is freed ch_job is cleared. */ void channel_set_job(channel_T *channel, job_T *job, jobopt_T *options) { channel->ch_job = job; channel_set_options(channel, options); if (job->jv_in_buf != NULL) { chanpart_T *in_part = &channel->ch_part[PART_IN]; set_bufref(&in_part->ch_bufref, job->jv_in_buf); ch_logs(channel, "reading from buffer '%s'", (char *)in_part->ch_bufref.br_buf->b_ffname); if (options->jo_set & JO_IN_TOP) { if (options->jo_in_top == 0 && !(options->jo_set & JO_IN_BOT)) { /* Special mode: send last-but-one line when appending a line * to the buffer. */ in_part->ch_bufref.br_buf->b_write_to_channel = TRUE; in_part->ch_buf_append = TRUE; in_part->ch_buf_top = in_part->ch_bufref.br_buf->b_ml.ml_line_count + 1; } else in_part->ch_buf_top = options->jo_in_top; } else in_part->ch_buf_top = 1; if (options->jo_set & JO_IN_BOT) in_part->ch_buf_bot = options->jo_in_bot; else in_part->ch_buf_bot = in_part->ch_bufref.br_buf->b_ml.ml_line_count; } } /* * Find a buffer matching "name" or create a new one. * Returns NULL if there is something very wrong (error already reported). */ static buf_T * find_buffer(char_u *name, int err, int msg) { buf_T *buf = NULL; buf_T *save_curbuf = curbuf; if (name != NULL && *name != NUL) { buf = buflist_findname(name); if (buf == NULL) buf = buflist_findname_exp(name); } if (buf == NULL) { buf = buflist_new(name == NULL || *name == NUL ? NULL : name, NULL, (linenr_T)0, BLN_LISTED | BLN_NEW); if (buf == NULL) return NULL; buf_copy_options(buf, BCO_ENTER); curbuf = buf; #ifdef FEAT_QUICKFIX set_option_value((char_u *)"bt", 0L, (char_u *)"nofile", OPT_LOCAL); set_option_value((char_u *)"bh", 0L, (char_u *)"hide", OPT_LOCAL); #endif if (curbuf->b_ml.ml_mfp == NULL) ml_open(curbuf); if (msg) ml_replace(1, (char_u *)(err ? "Reading from channel error..." : "Reading from channel output..."), TRUE); changed_bytes(1, 0); curbuf = save_curbuf; } return buf; } static void set_callback( char_u **cbp, partial_T **pp, char_u *callback, partial_T *partial) { free_callback(*cbp, *pp); if (callback != NULL && *callback != NUL) { if (partial != NULL) *cbp = partial_name(partial); else { *cbp = vim_strsave(callback); func_ref(*cbp); } } else *cbp = NULL; *pp = partial; if (partial != NULL) ++partial->pt_refcount; } /* * Set various properties from an "opt" argument. */ void channel_set_options(channel_T *channel, jobopt_T *opt) { ch_part_T part; if (opt->jo_set & JO_MODE) for (part = PART_SOCK; part < PART_COUNT; ++part) channel->ch_part[part].ch_mode = opt->jo_mode; if (opt->jo_set & JO_IN_MODE) channel->ch_part[PART_IN].ch_mode = opt->jo_in_mode; if (opt->jo_set & JO_OUT_MODE) channel->ch_part[PART_OUT].ch_mode = opt->jo_out_mode; if (opt->jo_set & JO_ERR_MODE) channel->ch_part[PART_ERR].ch_mode = opt->jo_err_mode; if (opt->jo_set & JO_TIMEOUT) for (part = PART_SOCK; part < PART_COUNT; ++part) channel->ch_part[part].ch_timeout = opt->jo_timeout; if (opt->jo_set & JO_OUT_TIMEOUT) channel->ch_part[PART_OUT].ch_timeout = opt->jo_out_timeout; if (opt->jo_set & JO_ERR_TIMEOUT) channel->ch_part[PART_ERR].ch_timeout = opt->jo_err_timeout; if (opt->jo_set & JO_BLOCK_WRITE) channel->ch_part[PART_IN].ch_block_write = 1; if (opt->jo_set & JO_CALLBACK) set_callback(&channel->ch_callback, &channel->ch_partial, opt->jo_callback, opt->jo_partial); if (opt->jo_set & JO_OUT_CALLBACK) set_callback(&channel->ch_part[PART_OUT].ch_callback, &channel->ch_part[PART_OUT].ch_partial, opt->jo_out_cb, opt->jo_out_partial); if (opt->jo_set & JO_ERR_CALLBACK) set_callback(&channel->ch_part[PART_ERR].ch_callback, &channel->ch_part[PART_ERR].ch_partial, opt->jo_err_cb, opt->jo_err_partial); if (opt->jo_set & JO_CLOSE_CALLBACK) set_callback(&channel->ch_close_cb, &channel->ch_close_partial, opt->jo_close_cb, opt->jo_close_partial); channel->ch_drop_never = opt->jo_drop_never; if ((opt->jo_set & JO_OUT_IO) && opt->jo_io[PART_OUT] == JIO_BUFFER) { buf_T *buf; /* writing output to a buffer. Default mode is NL. */ if (!(opt->jo_set & JO_OUT_MODE)) channel->ch_part[PART_OUT].ch_mode = MODE_NL; if (opt->jo_set & JO_OUT_BUF) { buf = buflist_findnr(opt->jo_io_buf[PART_OUT]); if (buf == NULL) EMSGN(_(e_nobufnr), (long)opt->jo_io_buf[PART_OUT]); } else { int msg = TRUE; if (opt->jo_set2 & JO2_OUT_MSG) msg = opt->jo_message[PART_OUT]; buf = find_buffer(opt->jo_io_name[PART_OUT], FALSE, msg); } if (buf != NULL) { if (opt->jo_set & JO_OUT_MODIFIABLE) channel->ch_part[PART_OUT].ch_nomodifiable = !opt->jo_modifiable[PART_OUT]; if (!buf->b_p_ma && !channel->ch_part[PART_OUT].ch_nomodifiable) { EMSG(_(e_modifiable)); } else { ch_logs(channel, "writing out to buffer '%s'", (char *)buf->b_ffname); set_bufref(&channel->ch_part[PART_OUT].ch_bufref, buf); } } } if ((opt->jo_set & JO_ERR_IO) && (opt->jo_io[PART_ERR] == JIO_BUFFER || (opt->jo_io[PART_ERR] == JIO_OUT && (opt->jo_set & JO_OUT_IO) && opt->jo_io[PART_OUT] == JIO_BUFFER))) { buf_T *buf; /* writing err to a buffer. Default mode is NL. */ if (!(opt->jo_set & JO_ERR_MODE)) channel->ch_part[PART_ERR].ch_mode = MODE_NL; if (opt->jo_io[PART_ERR] == JIO_OUT) buf = channel->ch_part[PART_OUT].ch_bufref.br_buf; else if (opt->jo_set & JO_ERR_BUF) { buf = buflist_findnr(opt->jo_io_buf[PART_ERR]); if (buf == NULL) EMSGN(_(e_nobufnr), (long)opt->jo_io_buf[PART_ERR]); } else { int msg = TRUE; if (opt->jo_set2 & JO2_ERR_MSG) msg = opt->jo_message[PART_ERR]; buf = find_buffer(opt->jo_io_name[PART_ERR], TRUE, msg); } if (buf != NULL) { if (opt->jo_set & JO_ERR_MODIFIABLE) channel->ch_part[PART_ERR].ch_nomodifiable = !opt->jo_modifiable[PART_ERR]; if (!buf->b_p_ma && !channel->ch_part[PART_ERR].ch_nomodifiable) { EMSG(_(e_modifiable)); } else { ch_logs(channel, "writing err to buffer '%s'", (char *)buf->b_ffname); set_bufref(&channel->ch_part[PART_ERR].ch_bufref, buf); } } } channel->ch_part[PART_OUT].ch_io = opt->jo_io[PART_OUT]; channel->ch_part[PART_ERR].ch_io = opt->jo_io[PART_ERR]; channel->ch_part[PART_IN].ch_io = opt->jo_io[PART_IN]; } /* * Set the callback for "channel"/"part" for the response with "id". */ void channel_set_req_callback( channel_T *channel, ch_part_T part, char_u *callback, partial_T *partial, int id) { cbq_T *head = &channel->ch_part[part].ch_cb_head; cbq_T *item = (cbq_T *)alloc((int)sizeof(cbq_T)); if (item != NULL) { item->cq_partial = partial; if (partial != NULL) { ++partial->pt_refcount; item->cq_callback = callback; } else { item->cq_callback = vim_strsave(callback); func_ref(item->cq_callback); } item->cq_seq_nr = id; item->cq_prev = head->cq_prev; head->cq_prev = item; item->cq_next = NULL; if (item->cq_prev == NULL) head->cq_next = item; else item->cq_prev->cq_next = item; } } static void write_buf_line(buf_T *buf, linenr_T lnum, channel_T *channel) { char_u *line = ml_get_buf(buf, lnum, FALSE); int len = (int)STRLEN(line); char_u *p; int i; /* Need to make a copy to be able to append a NL. */ if ((p = alloc(len + 2)) == NULL) return; memcpy((char *)p, (char *)line, len); for (i = 0; i < len; ++i) if (p[i] == NL) p[i] = NUL; p[len] = NL; p[len + 1] = NUL; channel_send(channel, PART_IN, p, len + 1, "write_buf_line"); vim_free(p); } /* * Return TRUE if "channel" can be written to. * Returns FALSE if the input is closed or the write would block. */ static int can_write_buf_line(channel_T *channel) { chanpart_T *in_part = &channel->ch_part[PART_IN]; if (in_part->ch_fd == INVALID_FD) return FALSE; /* pipe was closed */ /* for testing: block every other attempt to write */ if (in_part->ch_block_write == 1) in_part->ch_block_write = -1; else if (in_part->ch_block_write == -1) in_part->ch_block_write = 1; /* TODO: Win32 implementation, probably using WaitForMultipleObjects() */ #ifndef WIN32 { # if defined(HAVE_SELECT) struct timeval tval; fd_set wfds; int ret; FD_ZERO(&wfds); FD_SET((int)in_part->ch_fd, &wfds); tval.tv_sec = 0; tval.tv_usec = 0; for (;;) { ret = select((int)in_part->ch_fd + 1, NULL, &wfds, NULL, &tval); # ifdef EINTR SOCK_ERRNO; if (ret == -1 && errno == EINTR) continue; # endif if (ret <= 0 || in_part->ch_block_write == 1) { if (ret > 0) ch_log(channel, "FAKED Input not ready for writing"); else ch_log(channel, "Input not ready for writing"); return FALSE; } break; } # else struct pollfd fds; fds.fd = in_part->ch_fd; fds.events = POLLOUT; if (poll(&fds, 1, 0) <= 0) { ch_log(channel, "Input not ready for writing"); return FALSE; } if (in_part->ch_block_write == 1) { ch_log(channel, "FAKED Input not ready for writing"); return FALSE; } # endif } #endif return TRUE; } /* * Write any lines to the input channel. */ static void channel_write_in(channel_T *channel) { chanpart_T *in_part = &channel->ch_part[PART_IN]; linenr_T lnum; buf_T *buf = in_part->ch_bufref.br_buf; int written = 0; if (buf == NULL || in_part->ch_buf_append) return; /* no buffer or using appending */ if (!bufref_valid(&in_part->ch_bufref) || buf->b_ml.ml_mfp == NULL) { /* buffer was wiped out or unloaded */ ch_log(channel, "input buffer has been wiped out"); in_part->ch_bufref.br_buf = NULL; return; } for (lnum = in_part->ch_buf_top; lnum <= in_part->ch_buf_bot && lnum <= buf->b_ml.ml_line_count; ++lnum) { if (!can_write_buf_line(channel)) break; write_buf_line(buf, lnum, channel); ++written; } if (written == 1) ch_logn(channel, "written line %d to channel", (int)lnum - 1); else if (written > 1) ch_logn(channel, "written %d lines to channel", written); in_part->ch_buf_top = lnum; if (lnum > buf->b_ml.ml_line_count || lnum > in_part->ch_buf_bot) { /* Writing is done, no longer need the buffer. */ in_part->ch_bufref.br_buf = NULL; ch_log(channel, "Finished writing all lines to channel"); /* Close the pipe/socket, so that the other side gets EOF. */ ch_close_part(channel, PART_IN); } else ch_logn(channel, "Still %d more lines to write", buf->b_ml.ml_line_count - lnum + 1); } /* * Handle buffer "buf" being freed, remove it from any channels. */ void channel_buffer_free(buf_T *buf) { channel_T *channel; ch_part_T part; for (channel = first_channel; channel != NULL; channel = channel->ch_next) for (part = PART_SOCK; part < PART_COUNT; ++part) { chanpart_T *ch_part = &channel->ch_part[part]; if (ch_part->ch_bufref.br_buf == buf) { ch_logs(channel, "%s buffer has been wiped out", part_names[part]); ch_part->ch_bufref.br_buf = NULL; } } } /* * Write any lines waiting to be written to a channel. */ void channel_write_any_lines(void) { channel_T *channel; for (channel = first_channel; channel != NULL; channel = channel->ch_next) { chanpart_T *in_part = &channel->ch_part[PART_IN]; if (in_part->ch_bufref.br_buf != NULL) { if (in_part->ch_buf_append) channel_write_new_lines(in_part->ch_bufref.br_buf); else channel_write_in(channel); } } } /* * Write appended lines above the last one in "buf" to the channel. */ void channel_write_new_lines(buf_T *buf) { channel_T *channel; int found_one = FALSE; /* There could be more than one channel for the buffer, loop over all of * them. */ for (channel = first_channel; channel != NULL; channel = channel->ch_next) { chanpart_T *in_part = &channel->ch_part[PART_IN]; linenr_T lnum; int written = 0; if (in_part->ch_bufref.br_buf == buf && in_part->ch_buf_append) { if (in_part->ch_fd == INVALID_FD) continue; /* pipe was closed */ found_one = TRUE; for (lnum = in_part->ch_buf_bot; lnum < buf->b_ml.ml_line_count; ++lnum) { if (!can_write_buf_line(channel)) break; write_buf_line(buf, lnum, channel); ++written; } if (written == 1) ch_logn(channel, "written line %d to channel", (int)lnum - 1); else if (written > 1) ch_logn(channel, "written %d lines to channel", written); if (lnum < buf->b_ml.ml_line_count) ch_logn(channel, "Still %d more lines to write", buf->b_ml.ml_line_count - lnum); in_part->ch_buf_bot = lnum; } } if (!found_one) buf->b_write_to_channel = FALSE; } /* * Invoke the "callback" on channel "channel". * This does not redraw but sets channel_need_redraw; */ static void invoke_callback(channel_T *channel, char_u *callback, partial_T *partial, typval_T *argv) { typval_T rettv; int dummy; if (safe_to_invoke_callback == 0) IEMSG("INTERNAL: Invoking callback when it is not safe"); argv[0].v_type = VAR_CHANNEL; argv[0].vval.v_channel = channel; call_func(callback, (int)STRLEN(callback), &rettv, 2, argv, NULL, 0L, 0L, &dummy, TRUE, partial, NULL); clear_tv(&rettv); channel_need_redraw = TRUE; } /* * Return the first node from "channel"/"part" without removing it. * Returns NULL if there is nothing. */ readq_T * channel_peek(channel_T *channel, ch_part_T part) { readq_T *head = &channel->ch_part[part].ch_head; return head->rq_next; } /* * Return a pointer to the first NL in "node". * Skips over NUL characters. * Returns NULL if there is no NL. */ char_u * channel_first_nl(readq_T *node) { char_u *buffer = node->rq_buffer; long_u i; for (i = 0; i < node->rq_buflen; ++i) if (buffer[i] == NL) return buffer + i; return NULL; } /* * Return the first buffer from channel "channel"/"part" and remove it. * The caller must free it. * Returns NULL if there is nothing. */ char_u * channel_get(channel_T *channel, ch_part_T part) { readq_T *head = &channel->ch_part[part].ch_head; readq_T *node = head->rq_next; char_u *p; if (node == NULL) return NULL; /* dispose of the node but keep the buffer */ p = node->rq_buffer; head->rq_next = node->rq_next; if (node->rq_next == NULL) head->rq_prev = NULL; else node->rq_next->rq_prev = NULL; vim_free(node); return p; } /* * Returns the whole buffer contents concatenated for "channel"/"part". * Replaces NUL bytes with NL. */ static char_u * channel_get_all(channel_T *channel, ch_part_T part) { readq_T *head = &channel->ch_part[part].ch_head; readq_T *node = head->rq_next; long_u len = 0; char_u *res; char_u *p; /* If there is only one buffer just get that one. */ if (head->rq_next == NULL || head->rq_next->rq_next == NULL) return channel_get(channel, part); /* Concatenate everything into one buffer. */ for (node = head->rq_next; node != NULL; node = node->rq_next) len += node->rq_buflen; res = lalloc(len + 1, TRUE); if (res == NULL) return NULL; p = res; for (node = head->rq_next; node != NULL; node = node->rq_next) { mch_memmove(p, node->rq_buffer, node->rq_buflen); p += node->rq_buflen; } *p = NUL; /* Free all buffers */ do { p = channel_get(channel, part); vim_free(p); } while (p != NULL); /* turn all NUL into NL */ while (len > 0) { --len; if (res[len] == NUL) res[len] = NL; } return res; } /* * Consume "len" bytes from the head of "node". * Caller must check these bytes are available. */ void channel_consume(channel_T *channel, ch_part_T part, int len) { readq_T *head = &channel->ch_part[part].ch_head; readq_T *node = head->rq_next; char_u *buf = node->rq_buffer; mch_memmove(buf, buf + len, node->rq_buflen - len); node->rq_buflen -= len; } /* * Collapses the first and second buffer for "channel"/"part". * Returns FAIL if that is not possible. * When "want_nl" is TRUE collapse more buffers until a NL is found. */ int channel_collapse(channel_T *channel, ch_part_T part, int want_nl) { readq_T *head = &channel->ch_part[part].ch_head; readq_T *node = head->rq_next; readq_T *last_node; readq_T *n; char_u *newbuf; char_u *p; long_u len; if (node == NULL || node->rq_next == NULL) return FAIL; last_node = node->rq_next; len = node->rq_buflen + last_node->rq_buflen + 1; if (want_nl) while (last_node->rq_next != NULL && channel_first_nl(last_node) == NULL) { last_node = last_node->rq_next; len += last_node->rq_buflen; } p = newbuf = alloc(len); if (newbuf == NULL) return FAIL; /* out of memory */ mch_memmove(p, node->rq_buffer, node->rq_buflen); p += node->rq_buflen; vim_free(node->rq_buffer); node->rq_buffer = newbuf; for (n = node; n != last_node; ) { n = n->rq_next; mch_memmove(p, n->rq_buffer, n->rq_buflen); p += n->rq_buflen; vim_free(n->rq_buffer); } node->rq_buflen = (long_u)(p - newbuf); /* dispose of the collapsed nodes and their buffers */ for (n = node->rq_next; n != last_node; ) { n = n->rq_next; vim_free(n->rq_prev); } node->rq_next = last_node->rq_next; if (last_node->rq_next == NULL) head->rq_prev = node; else last_node->rq_next->rq_prev = node; vim_free(last_node); return OK; } /* * Store "buf[len]" on "channel"/"part". * When "prepend" is TRUE put in front, otherwise append at the end. * Returns OK or FAIL. */ static int channel_save(channel_T *channel, ch_part_T part, char_u *buf, int len, int prepend, char *lead) { readq_T *node; readq_T *head = &channel->ch_part[part].ch_head; char_u *p; int i; node = (readq_T *)alloc(sizeof(readq_T)); if (node == NULL) return FAIL; /* out of memory */ /* A NUL is added at the end, because netbeans code expects that. * Otherwise a NUL may appear inside the text. */ node->rq_buffer = alloc(len + 1); if (node->rq_buffer == NULL) { vim_free(node); return FAIL; /* out of memory */ } if (channel->ch_part[part].ch_mode == MODE_NL) { /* Drop any CR before a NL. */ p = node->rq_buffer; for (i = 0; i < len; ++i) if (buf[i] != CAR || i + 1 >= len || buf[i + 1] != NL) *p++ = buf[i]; *p = NUL; node->rq_buflen = (long_u)(p - node->rq_buffer); } else { mch_memmove(node->rq_buffer, buf, len); node->rq_buffer[len] = NUL; node->rq_buflen = (long_u)len; } if (prepend) { /* preend node to the head of the queue */ node->rq_next = head->rq_next; node->rq_prev = NULL; if (head->rq_next == NULL) head->rq_prev = node; else head->rq_next->rq_prev = node; head->rq_next = node; } else { /* append node to the tail of the queue */ node->rq_next = NULL; node->rq_prev = head->rq_prev; if (head->rq_prev == NULL) head->rq_next = node; else head->rq_prev->rq_next = node; head->rq_prev = node; } if (log_fd != NULL && lead != NULL) { ch_log_lead(lead, channel); fprintf(log_fd, "'"); if (fwrite(buf, len, 1, log_fd) != 1) return FAIL; fprintf(log_fd, "'\n"); } return OK; } /* * Try to fill the buffer of "reader". * Returns FALSE when nothing was added. */ static int channel_fill(js_read_T *reader) { channel_T *channel = (channel_T *)reader->js_cookie; ch_part_T part = reader->js_cookie_arg; char_u *next = channel_get(channel, part); int keeplen; int addlen; char_u *p; if (next == NULL) return FALSE; keeplen = reader->js_end - reader->js_buf; if (keeplen > 0) { /* Prepend unused text. */ addlen = (int)STRLEN(next); p = alloc(keeplen + addlen + 1); if (p == NULL) { vim_free(next); return FALSE; } mch_memmove(p, reader->js_buf, keeplen); mch_memmove(p + keeplen, next, addlen + 1); vim_free(next); next = p; } vim_free(reader->js_buf); reader->js_buf = next; return TRUE; } /* * Use the read buffer of "channel"/"part" and parse a JSON message that is * complete. The messages are added to the queue. * Return TRUE if there is more to read. */ static int channel_parse_json(channel_T *channel, ch_part_T part) { js_read_T reader; typval_T listtv; jsonq_T *item; chanpart_T *chanpart = &channel->ch_part[part]; jsonq_T *head = &chanpart->ch_json_head; int status; int ret; if (channel_peek(channel, part) == NULL) return FALSE; reader.js_buf = channel_get(channel, part); reader.js_used = 0; reader.js_fill = channel_fill; reader.js_cookie = channel; reader.js_cookie_arg = part; /* When a message is incomplete we wait for a short while for more to * arrive. After the delay drop the input, otherwise a truncated string * or list will make us hang. * Do not generate error messages, they will be written in a channel log. */ ++emsg_silent; status = json_decode(&reader, &listtv, chanpart->ch_mode == MODE_JS ? JSON_JS : 0); --emsg_silent; if (status == OK) { /* Only accept the response when it is a list with at least two * items. */ if (listtv.v_type != VAR_LIST || listtv.vval.v_list->lv_len < 2) { if (listtv.v_type != VAR_LIST) ch_error(channel, "Did not receive a list, discarding"); else ch_errorn(channel, "Expected list with two items, got %d", listtv.vval.v_list->lv_len); clear_tv(&listtv); } else { item = (jsonq_T *)alloc((unsigned)sizeof(jsonq_T)); if (item == NULL) clear_tv(&listtv); else { item->jq_no_callback = FALSE; item->jq_value = alloc_tv(); if (item->jq_value == NULL) { vim_free(item); clear_tv(&listtv); } else { *item->jq_value = listtv; item->jq_prev = head->jq_prev; head->jq_prev = item; item->jq_next = NULL; if (item->jq_prev == NULL) head->jq_next = item; else item->jq_prev->jq_next = item; } } } } if (status == OK) chanpart->ch_wait_len = 0; else if (status == MAYBE) { size_t buflen = STRLEN(reader.js_buf); if (chanpart->ch_wait_len < buflen) { /* First time encountering incomplete message or after receiving * more (but still incomplete): set a deadline of 100 msec. */ ch_logn(channel, "Incomplete message (%d bytes) - wait 100 msec for more", (int)buflen); reader.js_used = 0; chanpart->ch_wait_len = buflen; #ifdef WIN32 chanpart->ch_deadline = GetTickCount() + 100L; #else gettimeofday(&chanpart->ch_deadline, NULL); chanpart->ch_deadline.tv_usec += 100 * 1000; if (chanpart->ch_deadline.tv_usec > 1000 * 1000) { chanpart->ch_deadline.tv_usec -= 1000 * 1000; ++chanpart->ch_deadline.tv_sec; } #endif } else { int timeout; #ifdef WIN32 timeout = GetTickCount() > chanpart->ch_deadline; #else { struct timeval now_tv; gettimeofday(&now_tv, NULL); timeout = now_tv.tv_sec > chanpart->ch_deadline.tv_sec || (now_tv.tv_sec == chanpart->ch_deadline.tv_sec && now_tv.tv_usec > chanpart->ch_deadline.tv_usec); } #endif if (timeout) { status = FAIL; chanpart->ch_wait_len = 0; ch_log(channel, "timed out"); } else { reader.js_used = 0; ch_log(channel, "still waiting on incomplete message"); } } } if (status == FAIL) { ch_error(channel, "Decoding failed - discarding input"); ret = FALSE; chanpart->ch_wait_len = 0; } else if (reader.js_buf[reader.js_used] != NUL) { /* Put the unread part back into the channel. */ channel_save(channel, part, reader.js_buf + reader.js_used, (int)(reader.js_end - reader.js_buf) - reader.js_used, TRUE, NULL); ret = status == MAYBE ? FALSE: TRUE; } else ret = FALSE; vim_free(reader.js_buf); return ret; } /* * Remove "node" from the queue that it is in. Does not free it. */ static void remove_cb_node(cbq_T *head, cbq_T *node) { if (node->cq_prev == NULL) head->cq_next = node->cq_next; else node->cq_prev->cq_next = node->cq_next; if (node->cq_next == NULL) head->cq_prev = node->cq_prev; else node->cq_next->cq_prev = node->cq_prev; } /* * Remove "node" from the queue that it is in and free it. * Caller should have freed or used node->jq_value. */ static void remove_json_node(jsonq_T *head, jsonq_T *node) { if (node->jq_prev == NULL) head->jq_next = node->jq_next; else node->jq_prev->jq_next = node->jq_next; if (node->jq_next == NULL) head->jq_prev = node->jq_prev; else node->jq_next->jq_prev = node->jq_prev; vim_free(node); } /* * Get a message from the JSON queue for channel "channel". * When "id" is positive it must match the first number in the list. * When "id" is zero or negative jut get the first message. But not the one * with id ch_block_id. * When "without_callback" is TRUE also get messages that were pushed back. * Return OK when found and return the value in "rettv". * Return FAIL otherwise. */ static int channel_get_json( channel_T *channel, ch_part_T part, int id, int without_callback, typval_T **rettv) { jsonq_T *head = &channel->ch_part[part].ch_json_head; jsonq_T *item = head->jq_next; while (item != NULL) { list_T *l = item->jq_value->vval.v_list; typval_T *tv = &l->lv_first->li_tv; if ((without_callback || !item->jq_no_callback) && ((id > 0 && tv->v_type == VAR_NUMBER && tv->vval.v_number == id) || (id <= 0 && (tv->v_type != VAR_NUMBER || tv->vval.v_number == 0 || tv->vval.v_number != channel->ch_part[part].ch_block_id)))) { *rettv = item->jq_value; if (tv->v_type == VAR_NUMBER) ch_logn(channel, "Getting JSON message %d", tv->vval.v_number); remove_json_node(head, item); return OK; } item = item->jq_next; } return FAIL; } /* * Put back "rettv" into the JSON queue, there was no callback for it. * Takes over the values in "rettv". */ static void channel_push_json(channel_T *channel, ch_part_T part, typval_T *rettv) { jsonq_T *head = &channel->ch_part[part].ch_json_head; jsonq_T *item = head->jq_next; jsonq_T *newitem; if (head->jq_prev != NULL && head->jq_prev->jq_no_callback) /* last item was pushed back, append to the end */ item = NULL; else while (item != NULL && item->jq_no_callback) /* append after the last item that was pushed back */ item = item->jq_next; newitem = (jsonq_T *)alloc((unsigned)sizeof(jsonq_T)); if (newitem == NULL) clear_tv(rettv); else { newitem->jq_value = alloc_tv(); if (newitem->jq_value == NULL) { vim_free(newitem); clear_tv(rettv); } else { newitem->jq_no_callback = FALSE; *newitem->jq_value = *rettv; if (item == NULL) { /* append to the end */ newitem->jq_prev = head->jq_prev; head->jq_prev = newitem; newitem->jq_next = NULL; if (newitem->jq_prev == NULL) head->jq_next = newitem; else newitem->jq_prev->jq_next = newitem; } else { /* append after "item" */ newitem->jq_prev = item; newitem->jq_next = item->jq_next; item->jq_next = newitem; if (newitem->jq_next == NULL) head->jq_prev = newitem; else newitem->jq_next->jq_prev = newitem; } } } } #define CH_JSON_MAX_ARGS 4 /* * Execute a command received over "channel"/"part" * "argv[0]" is the command string. * "argv[1]" etc. have further arguments, type is VAR_UNKNOWN if missing. */ static void channel_exe_cmd(channel_T *channel, ch_part_T part, typval_T *argv) { char_u *cmd = argv[0].vval.v_string; char_u *arg; int options = channel->ch_part[part].ch_mode == MODE_JS ? JSON_JS : 0; if (argv[1].v_type != VAR_STRING) { ch_error(channel, "received command with non-string argument"); if (p_verbose > 2) EMSG(_("E903: received command with non-string argument")); return; } arg = argv[1].vval.v_string; if (arg == NULL) arg = (char_u *)""; if (STRCMP(cmd, "ex") == 0) { int save_called_emsg = called_emsg; called_emsg = FALSE; ch_logs(channel, "Executing ex command '%s'", (char *)arg); ++emsg_silent; do_cmdline_cmd(arg); --emsg_silent; if (called_emsg) ch_logs(channel, "Ex command error: '%s'", (char *)get_vim_var_str(VV_ERRMSG)); called_emsg = save_called_emsg; } else if (STRCMP(cmd, "normal") == 0) { exarg_T ea; ch_logs(channel, "Executing normal command '%s'", (char *)arg); ea.arg = arg; ea.addr_count = 0; ea.forceit = TRUE; /* no mapping */ ex_normal(&ea); } else if (STRCMP(cmd, "redraw") == 0) { exarg_T ea; ch_log(channel, "redraw"); ea.forceit = *arg != NUL; ex_redraw(&ea); showruler(FALSE); setcursor(); out_flush(); #ifdef FEAT_GUI if (gui.in_use) { gui_update_cursor(TRUE, FALSE); gui_mch_flush(); } #endif } else if (STRCMP(cmd, "expr") == 0 || STRCMP(cmd, "call") == 0) { int is_call = cmd[0] == 'c'; int id_idx = is_call ? 3 : 2; if (argv[id_idx].v_type != VAR_UNKNOWN && argv[id_idx].v_type != VAR_NUMBER) { ch_error(channel, "last argument for expr/call must be a number"); if (p_verbose > 2) EMSG(_("E904: last argument for expr/call must be a number")); } else if (is_call && argv[2].v_type != VAR_LIST) { ch_error(channel, "third argument for call must be a list"); if (p_verbose > 2) EMSG(_("E904: third argument for call must be a list")); } else { typval_T *tv = NULL; typval_T res_tv; typval_T err_tv; char_u *json = NULL; /* Don't pollute the display with errors. */ ++emsg_skip; if (!is_call) { ch_logs(channel, "Evaluating expression '%s'", (char *)arg); tv = eval_expr(arg, NULL); } else { ch_logs(channel, "Calling '%s'", (char *)arg); if (func_call(arg, &argv[2], NULL, NULL, &res_tv) == OK) tv = &res_tv; } if (argv[id_idx].v_type == VAR_NUMBER) { int id = argv[id_idx].vval.v_number; if (tv != NULL) json = json_encode_nr_expr(id, tv, options | JSON_NL); if (tv == NULL || (json != NULL && *json == NUL)) { /* If evaluation failed or the result can't be encoded * then return the string "ERROR". */ vim_free(json); err_tv.v_type = VAR_STRING; err_tv.vval.v_string = (char_u *)"ERROR"; json = json_encode_nr_expr(id, &err_tv, options | JSON_NL); } if (json != NULL) { channel_send(channel, part == PART_SOCK ? PART_SOCK : PART_IN, json, (int)STRLEN(json), (char *)cmd); vim_free(json); } } --emsg_skip; if (tv == &res_tv) clear_tv(tv); else free_tv(tv); } } else if (p_verbose > 2) { ch_errors(channel, "Received unknown command: %s", (char *)cmd); EMSG2(_("E905: received unknown command: %s"), cmd); } } /* * Invoke the callback at "cbhead". * Does not redraw but sets channel_need_redraw. */ static void invoke_one_time_callback( channel_T *channel, cbq_T *cbhead, cbq_T *item, typval_T *argv) { ch_logs(channel, "Invoking one-time callback %s", (char *)item->cq_callback); /* Remove the item from the list first, if the callback * invokes ch_close() the list will be cleared. */ remove_cb_node(cbhead, item); invoke_callback(channel, item->cq_callback, item->cq_partial, argv); free_callback(item->cq_callback, item->cq_partial); vim_free(item); } static void append_to_buffer(buf_T *buffer, char_u *msg, channel_T *channel, ch_part_T part) { buf_T *save_curbuf = curbuf; linenr_T lnum = buffer->b_ml.ml_line_count; int save_write_to = buffer->b_write_to_channel; chanpart_T *ch_part = &channel->ch_part[part]; int save_p_ma = buffer->b_p_ma; int empty = (buffer->b_ml.ml_flags & ML_EMPTY) ? 1 : 0; if (!buffer->b_p_ma && !ch_part->ch_nomodifiable) { if (!ch_part->ch_nomod_error) { ch_error(channel, "Buffer is not modifiable, cannot append"); ch_part->ch_nomod_error = TRUE; } return; } /* If the buffer is also used as input insert above the last * line. Don't write these lines. */ if (save_write_to) { --lnum; buffer->b_write_to_channel = FALSE; } /* Append to the buffer */ ch_logn(channel, "appending line %d to buffer", (int)lnum + 1 - empty); buffer->b_p_ma = TRUE; curbuf = buffer; curwin->w_buffer = curbuf; u_sync(TRUE); /* ignore undo failure, undo is not very useful here */ ignored = u_save(lnum - empty, lnum + 1); if (empty) { /* The buffer is empty, replace the first (dummy) line. */ ml_replace(lnum, msg, TRUE); lnum = 0; } else ml_append(lnum, msg, 0, FALSE); appended_lines_mark(lnum, 1L); curbuf = save_curbuf; curwin->w_buffer = curbuf; if (ch_part->ch_nomodifiable) buffer->b_p_ma = FALSE; else buffer->b_p_ma = save_p_ma; if (buffer->b_nwindows > 0) { win_T *wp; win_T *save_curwin; FOR_ALL_WINDOWS(wp) { if (wp->w_buffer == buffer && (save_write_to ? wp->w_cursor.lnum == lnum + 1 : (wp->w_cursor.lnum == lnum && wp->w_cursor.col == 0))) { ++wp->w_cursor.lnum; save_curwin = curwin; curwin = wp; curbuf = curwin->w_buffer; scroll_cursor_bot(0, FALSE); curwin = save_curwin; curbuf = curwin->w_buffer; } } redraw_buf_and_status_later(buffer, VALID); channel_need_redraw = TRUE; } if (save_write_to) { channel_T *ch; /* Find channels reading from this buffer and adjust their * next-to-read line number. */ buffer->b_write_to_channel = TRUE; for (ch = first_channel; ch != NULL; ch = ch->ch_next) { chanpart_T *in_part = &ch->ch_part[PART_IN]; if (in_part->ch_bufref.br_buf == buffer) in_part->ch_buf_bot = buffer->b_ml.ml_line_count; } } } static void drop_messages(channel_T *channel, ch_part_T part) { char_u *msg; while ((msg = channel_get(channel, part)) != NULL) { ch_logs(channel, "Dropping message '%s'", (char *)msg); vim_free(msg); } } /* * Invoke a callback for "channel"/"part" if needed. * This does not redraw but sets channel_need_redraw when redraw is needed. * Return TRUE when a message was handled, there might be another one. */ static int may_invoke_callback(channel_T *channel, ch_part_T part) { char_u *msg = NULL; typval_T *listtv = NULL; typval_T argv[CH_JSON_MAX_ARGS]; int seq_nr = -1; chanpart_T *ch_part = &channel->ch_part[part]; ch_mode_T ch_mode = ch_part->ch_mode; cbq_T *cbhead = &ch_part->ch_cb_head; cbq_T *cbitem; char_u *callback = NULL; partial_T *partial = NULL; buf_T *buffer = NULL; char_u *p; if (channel->ch_nb_close_cb != NULL) /* this channel is handled elsewhere (netbeans) */ return FALSE; /* Use a message-specific callback, part callback or channel callback */ for (cbitem = cbhead->cq_next; cbitem != NULL; cbitem = cbitem->cq_next) if (cbitem->cq_seq_nr == 0) break; if (cbitem != NULL) { callback = cbitem->cq_callback; partial = cbitem->cq_partial; } else if (ch_part->ch_callback != NULL) { callback = ch_part->ch_callback; partial = ch_part->ch_partial; } else { callback = channel->ch_callback; partial = channel->ch_partial; } buffer = ch_part->ch_bufref.br_buf; if (buffer != NULL && (!bufref_valid(&ch_part->ch_bufref) || buffer->b_ml.ml_mfp == NULL)) { /* buffer was wiped out or unloaded */ ch_logs(channel, "%s buffer has been wiped out", part_names[part]); ch_part->ch_bufref.br_buf = NULL; buffer = NULL; } if (ch_mode == MODE_JSON || ch_mode == MODE_JS) { listitem_T *item; int argc = 0; /* Get any json message in the queue. */ if (channel_get_json(channel, part, -1, FALSE, &listtv) == FAIL) { /* Parse readahead, return when there is still no message. */ channel_parse_json(channel, part); if (channel_get_json(channel, part, -1, FALSE, &listtv) == FAIL) return FALSE; } for (item = listtv->vval.v_list->lv_first; item != NULL && argc < CH_JSON_MAX_ARGS; item = item->li_next) argv[argc++] = item->li_tv; while (argc < CH_JSON_MAX_ARGS) argv[argc++].v_type = VAR_UNKNOWN; if (argv[0].v_type == VAR_STRING) { /* ["cmd", arg] or ["cmd", arg, arg] or ["cmd", arg, arg, arg] */ channel_exe_cmd(channel, part, argv); free_tv(listtv); return TRUE; } if (argv[0].v_type != VAR_NUMBER) { ch_error(channel, "Dropping message with invalid sequence number type"); free_tv(listtv); return FALSE; } seq_nr = argv[0].vval.v_number; } else if (channel_peek(channel, part) == NULL) { /* nothing to read on RAW or NL channel */ return FALSE; } else { /* If there is no callback or buffer drop the message. */ if (callback == NULL && buffer == NULL) { /* If there is a close callback it may use ch_read() to get the * messages. */ if (channel->ch_close_cb == NULL && !channel->ch_drop_never) drop_messages(channel, part); return FALSE; } if (ch_mode == MODE_NL) { char_u *nl = NULL; char_u *buf; readq_T *node; /* See if we have a message ending in NL in the first buffer. If * not try to concatenate the first and the second buffer. */ while (TRUE) { node = channel_peek(channel, part); nl = channel_first_nl(node); if (nl != NULL) break; if (channel_collapse(channel, part, TRUE) == FAIL) { if (ch_part->ch_fd == INVALID_FD && node->rq_buflen > 0) break; return FALSE; /* incomplete message */ } } buf = node->rq_buffer; if (nl == NULL) { /* Flush remaining message that is missing a NL. */ char_u *new_buf; new_buf = vim_realloc(buf, node->rq_buflen + 1); if (new_buf == NULL) /* This might fail over and over again, should the message * be dropped? */ return FALSE; buf = new_buf; node->rq_buffer = buf; nl = buf + node->rq_buflen++; *nl = NUL; } /* Convert NUL to NL, the internal representation. */ for (p = buf; p < nl && p < buf + node->rq_buflen; ++p) if (*p == NUL) *p = NL; if (nl + 1 == buf + node->rq_buflen) { /* get the whole buffer, drop the NL */ msg = channel_get(channel, part); *nl = NUL; } else { /* Copy the message into allocated memory (excluding the NL) * and remove it from the buffer (including the NL). */ msg = vim_strnsave(buf, (int)(nl - buf)); channel_consume(channel, part, (int)(nl - buf) + 1); } } else { /* For a raw channel we don't know where the message ends, just * get everything we have. * Convert NUL to NL, the internal representation. */ msg = channel_get_all(channel, part); } if (msg == NULL) return FALSE; /* out of memory (and avoids Coverity warning) */ argv[1].v_type = VAR_STRING; argv[1].vval.v_string = msg; } if (seq_nr > 0) { int done = FALSE; /* JSON or JS mode: invoke the one-time callback with the matching nr */ for (cbitem = cbhead->cq_next; cbitem != NULL; cbitem = cbitem->cq_next) if (cbitem->cq_seq_nr == seq_nr) { invoke_one_time_callback(channel, cbhead, cbitem, argv); done = TRUE; break; } if (!done) { if (channel->ch_drop_never) { /* message must be read with ch_read() */ channel_push_json(channel, part, listtv); listtv = NULL; } else ch_logn(channel, "Dropping message %d without callback", seq_nr); } } else if (callback != NULL || buffer != NULL) { if (buffer != NULL) { if (msg == NULL) /* JSON or JS mode: re-encode the message. */ msg = json_encode(listtv, ch_mode); if (msg != NULL) { #ifdef FEAT_TERMINAL if (buffer->b_term != NULL) write_to_term(buffer, msg, channel); else #endif append_to_buffer(buffer, msg, channel, part); } } if (callback != NULL) { if (cbitem != NULL) invoke_one_time_callback(channel, cbhead, cbitem, argv); else { /* invoke the channel callback */ ch_logs(channel, "Invoking channel callback %s", (char *)callback); invoke_callback(channel, callback, partial, argv); } } } else ch_logn(channel, "Dropping message %d", seq_nr); if (listtv != NULL) free_tv(listtv); vim_free(msg); return TRUE; } /* * Return TRUE when channel "channel" is open for writing to. * Also returns FALSE or invalid "channel". */ int channel_can_write_to(channel_T *channel) { return channel != NULL && (channel->CH_SOCK_FD != INVALID_FD || channel->CH_IN_FD != INVALID_FD); } /* * Return TRUE when channel "channel" is open for reading or writing. * Also returns FALSE for invalid "channel". */ int channel_is_open(channel_T *channel) { return channel != NULL && (channel->CH_SOCK_FD != INVALID_FD || channel->CH_IN_FD != INVALID_FD || channel->CH_OUT_FD != INVALID_FD || channel->CH_ERR_FD != INVALID_FD); } /* * Return TRUE if "channel" has JSON or other typeahead. */ int channel_has_readahead(channel_T *channel, ch_part_T part) { ch_mode_T ch_mode = channel->ch_part[part].ch_mode; if (ch_mode == MODE_JSON || ch_mode == MODE_JS) { jsonq_T *head = &channel->ch_part[part].ch_json_head; jsonq_T *item = head->jq_next; return item != NULL; } return channel_peek(channel, part) != NULL; } /* * Return a string indicating the status of the channel. * If "req_part" is not negative check that part. */ char * channel_status(channel_T *channel, int req_part) { ch_part_T part; int has_readahead = FALSE; if (channel == NULL) return "fail"; if (req_part == PART_OUT) { if (channel->CH_OUT_FD != INVALID_FD) return "open"; if (channel_has_readahead(channel, PART_OUT)) has_readahead = TRUE; } else if (req_part == PART_ERR) { if (channel->CH_ERR_FD != INVALID_FD) return "open"; if (channel_has_readahead(channel, PART_ERR)) has_readahead = TRUE; } else { if (channel_is_open(channel)) return "open"; for (part = PART_SOCK; part < PART_IN; ++part) if (channel_has_readahead(channel, part)) { has_readahead = TRUE; break; } } if (has_readahead) return "buffered"; return "closed"; } static void channel_part_info(channel_T *channel, dict_T *dict, char *name, ch_part_T part) { chanpart_T *chanpart = &channel->ch_part[part]; char namebuf[20]; /* longest is "sock_timeout" */ size_t tail; char *status; char *s = ""; vim_strncpy((char_u *)namebuf, (char_u *)name, 4); STRCAT(namebuf, "_"); tail = STRLEN(namebuf); STRCPY(namebuf + tail, "status"); if (chanpart->ch_fd != INVALID_FD) status = "open"; else if (channel_has_readahead(channel, part)) status = "buffered"; else status = "closed"; dict_add_nr_str(dict, namebuf, 0, (char_u *)status); STRCPY(namebuf + tail, "mode"); switch (chanpart->ch_mode) { case MODE_NL: s = "NL"; break; case MODE_RAW: s = "RAW"; break; case MODE_JSON: s = "JSON"; break; case MODE_JS: s = "JS"; break; } dict_add_nr_str(dict, namebuf, 0, (char_u *)s); STRCPY(namebuf + tail, "io"); if (part == PART_SOCK) s = "socket"; else switch (chanpart->ch_io) { case JIO_NULL: s = "null"; break; case JIO_PIPE: s = "pipe"; break; case JIO_FILE: s = "file"; break; case JIO_BUFFER: s = "buffer"; break; case JIO_OUT: s = "out"; break; } dict_add_nr_str(dict, namebuf, 0, (char_u *)s); STRCPY(namebuf + tail, "timeout"); dict_add_nr_str(dict, namebuf, chanpart->ch_timeout, NULL); } void channel_info(channel_T *channel, dict_T *dict) { dict_add_nr_str(dict, "id", channel->ch_id, NULL); dict_add_nr_str(dict, "status", 0, (char_u *)channel_status(channel, -1)); if (channel->ch_hostname != NULL) { dict_add_nr_str(dict, "hostname", 0, (char_u *)channel->ch_hostname); dict_add_nr_str(dict, "port", channel->ch_port, NULL); channel_part_info(channel, dict, "sock", PART_SOCK); } else { channel_part_info(channel, dict, "out", PART_OUT); channel_part_info(channel, dict, "err", PART_ERR); channel_part_info(channel, dict, "in", PART_IN); } } /* * Close channel "channel". * Trigger the close callback if "invoke_close_cb" is TRUE. * Does not clear the buffers. */ void channel_close(channel_T *channel, int invoke_close_cb) { ch_log(channel, "Closing channel"); #ifdef FEAT_GUI channel_gui_unregister(channel); #endif ch_close_part(channel, PART_SOCK); ch_close_part(channel, PART_IN); ch_close_part(channel, PART_OUT); ch_close_part(channel, PART_ERR); if (invoke_close_cb && channel->ch_close_cb != NULL) { typval_T argv[1]; typval_T rettv; int dummy; ch_part_T part; /* Invoke callbacks before the close callback, since it's weird to * first invoke the close callback. Increment the refcount to avoid * the channel being freed halfway. */ ++channel->ch_refcount; ch_log(channel, "Invoking callbacks before closing"); for (part = PART_SOCK; part < PART_IN; ++part) while (may_invoke_callback(channel, part)) ; /* Invoke the close callback, if still set. */ if (channel->ch_close_cb != NULL) { ch_logs(channel, "Invoking close callback %s", (char *)channel->ch_close_cb); argv[0].v_type = VAR_CHANNEL; argv[0].vval.v_channel = channel; call_func(channel->ch_close_cb, (int)STRLEN(channel->ch_close_cb), &rettv, 1, argv, NULL, 0L, 0L, &dummy, TRUE, channel->ch_close_partial, NULL); clear_tv(&rettv); channel_need_redraw = TRUE; } /* the callback is only called once */ free_callback(channel->ch_close_cb, channel->ch_close_partial); channel->ch_close_cb = NULL; channel->ch_close_partial = NULL; --channel->ch_refcount; if (channel_need_redraw) { channel_need_redraw = FALSE; redraw_after_callback(); } if (!channel->ch_drop_never) /* any remaining messages are useless now */ for (part = PART_SOCK; part < PART_IN; ++part) drop_messages(channel, part); } channel->ch_nb_close_cb = NULL; } /* * Close the "in" part channel "channel". */ void channel_close_in(channel_T *channel) { ch_close_part(channel, PART_IN); } /* * Clear the read buffer on "channel"/"part". */ static void channel_clear_one(channel_T *channel, ch_part_T part) { jsonq_T *json_head = &channel->ch_part[part].ch_json_head; cbq_T *cb_head = &channel->ch_part[part].ch_cb_head; while (channel_peek(channel, part) != NULL) vim_free(channel_get(channel, part)); while (cb_head->cq_next != NULL) { cbq_T *node = cb_head->cq_next; remove_cb_node(cb_head, node); free_callback(node->cq_callback, node->cq_partial); vim_free(node); } while (json_head->jq_next != NULL) { free_tv(json_head->jq_next->jq_value); remove_json_node(json_head, json_head->jq_next); } free_callback(channel->ch_part[part].ch_callback, channel->ch_part[part].ch_partial); channel->ch_part[part].ch_callback = NULL; channel->ch_part[part].ch_partial = NULL; } /* * Clear all the read buffers on "channel". */ void channel_clear(channel_T *channel) { ch_log(channel, "Clearing channel"); vim_free(channel->ch_hostname); channel->ch_hostname = NULL; channel_clear_one(channel, PART_SOCK); channel_clear_one(channel, PART_OUT); channel_clear_one(channel, PART_ERR); /* there is no callback or queue for PART_IN */ free_callback(channel->ch_callback, channel->ch_partial); channel->ch_callback = NULL; channel->ch_partial = NULL; free_callback(channel->ch_close_cb, channel->ch_close_partial); channel->ch_close_cb = NULL; channel->ch_close_partial = NULL; } #if defined(EXITFREE) || defined(PROTO) void channel_free_all(void) { channel_T *channel; ch_log(NULL, "channel_free_all()"); for (channel = first_channel; channel != NULL; channel = channel->ch_next) channel_clear(channel); } #endif /* Sent when the netbeans channel is found closed when reading. */ #define DETACH_MSG_RAW "DETACH\n" /* Buffer size for reading incoming messages. */ #define MAXMSGSIZE 4096 #if defined(HAVE_SELECT) /* * Add write fds where we are waiting for writing to be possible. */ static int channel_fill_wfds(int maxfd_arg, fd_set *wfds) { int maxfd = maxfd_arg; channel_T *ch; for (ch = first_channel; ch != NULL; ch = ch->ch_next) { chanpart_T *in_part = &ch->ch_part[PART_IN]; if (in_part->ch_fd != INVALID_FD && in_part->ch_bufref.br_buf != NULL) { FD_SET((int)in_part->ch_fd, wfds); if ((int)in_part->ch_fd >= maxfd) maxfd = (int)in_part->ch_fd + 1; } } return maxfd; } #else /* * Add write fds where we are waiting for writing to be possible. */ static int channel_fill_poll_write(int nfd_in, struct pollfd *fds) { int nfd = nfd_in; channel_T *ch; for (ch = first_channel; ch != NULL; ch = ch->ch_next) { chanpart_T *in_part = &ch->ch_part[PART_IN]; if (in_part->ch_fd != INVALID_FD && in_part->ch_bufref.br_buf != NULL) { in_part->ch_poll_idx = nfd; fds[nfd].fd = in_part->ch_fd; fds[nfd].events = POLLOUT; ++nfd; } else in_part->ch_poll_idx = -1; } return nfd; } #endif typedef enum { CW_READY, CW_NOT_READY, CW_ERROR } channel_wait_result; /* * Check for reading from "fd" with "timeout" msec. * Return CW_READY when there is something to read. * Return CW_NOT_READY when there is nothing to read. * Return CW_ERROR when there is an error. */ static channel_wait_result channel_wait(channel_T *channel, sock_T fd, int timeout) { if (timeout > 0) ch_logn(channel, "Waiting for up to %d msec", timeout); # ifdef WIN32 if (fd != channel->CH_SOCK_FD) { DWORD nread; int sleep_time; DWORD deadline = GetTickCount() + timeout; int delay = 1; /* reading from a pipe, not a socket */ while (TRUE) { int r = PeekNamedPipe((HANDLE)fd, NULL, 0, NULL, &nread, NULL); if (r && nread > 0) return CW_READY; if (r == 0) return CW_ERROR; /* perhaps write some buffer lines */ channel_write_any_lines(); sleep_time = deadline - GetTickCount(); if (sleep_time <= 0) break; /* Wait for a little while. Very short at first, up to 10 msec * after looping a few times. */ if (sleep_time > delay) sleep_time = delay; Sleep(sleep_time); delay = delay * 2; if (delay > 10) delay = 10; } } else #endif { #if defined(HAVE_SELECT) struct timeval tval; fd_set rfds; fd_set wfds; int ret; int maxfd; tval.tv_sec = timeout / 1000; tval.tv_usec = (timeout % 1000) * 1000; for (;;) { FD_ZERO(&rfds); FD_SET((int)fd, &rfds); /* Write lines to a pipe when a pipe can be written to. Need to * set this every time, some buffers may be done. */ maxfd = (int)fd + 1; FD_ZERO(&wfds); maxfd = channel_fill_wfds(maxfd, &wfds); ret = select(maxfd, &rfds, &wfds, NULL, &tval); # ifdef EINTR SOCK_ERRNO; if (ret == -1 && errno == EINTR) continue; # endif if (ret > 0) { if (FD_ISSET(fd, &rfds)) return CW_READY; channel_write_any_lines(); continue; } break; } #else for (;;) { struct pollfd fds[MAX_OPEN_CHANNELS + 1]; int nfd = 1; fds[0].fd = fd; fds[0].events = POLLIN; nfd = channel_fill_poll_write(nfd, fds); if (poll(fds, nfd, timeout) > 0) { if (fds[0].revents & POLLIN) return CW_READY; channel_write_any_lines(); continue; } break; } #endif } return CW_NOT_READY; } static void ch_close_part_on_error( channel_T *channel, ch_part_T part, int is_err, char *func) { char msgbuf[80]; vim_snprintf(msgbuf, sizeof(msgbuf), "%%s(): Read %s from ch_part[%d], closing", (is_err ? "error" : "EOF"), part); if (is_err) /* Do not call emsg(), most likely the other end just exited. */ ch_errors(channel, msgbuf, func); else ch_logs(channel, msgbuf, func); /* Queue a "DETACH" netbeans message in the command queue in order to * terminate the netbeans session later. Do not end the session here * directly as we may be running in the context of a call to * netbeans_parse_messages(): * netbeans_parse_messages * -> autocmd triggered while processing the netbeans cmd * -> ui_breakcheck * -> gui event loop or select loop * -> channel_read() * Only send "DETACH" for a netbeans channel. */ if (channel->ch_nb_close_cb != NULL) channel_save(channel, PART_SOCK, (char_u *)DETACH_MSG_RAW, (int)STRLEN(DETACH_MSG_RAW), FALSE, "PUT "); /* When reading is not possible close this part of the channel. Don't * close the channel yet, there may be something to read on another part. */ ch_close_part(channel, part); #ifdef FEAT_GUI /* Stop listening to GUI events right away. */ channel_gui_unregister_one(channel, part); #endif } static void channel_close_now(channel_T *channel) { ch_log(channel, "Closing channel because all readable fds are closed"); if (channel->ch_nb_close_cb != NULL) (*channel->ch_nb_close_cb)(); channel_close(channel, TRUE); } /* * Read from channel "channel" for as long as there is something to read. * "part" is PART_SOCK, PART_OUT or PART_ERR. * The data is put in the read queue. No callbacks are invoked here. */ static void channel_read(channel_T *channel, ch_part_T part, char *func) { static char_u *buf = NULL; int len = 0; int readlen = 0; sock_T fd; int use_socket = FALSE; fd = channel->ch_part[part].ch_fd; if (fd == INVALID_FD) { ch_errors(channel, "channel_read() called while %s part is closed", part_names[part]); return; } use_socket = fd == channel->CH_SOCK_FD; /* Allocate a buffer to read into. */ if (buf == NULL) { buf = alloc(MAXMSGSIZE); if (buf == NULL) return; /* out of memory! */ } /* Keep on reading for as long as there is something to read. * Use select() or poll() to avoid blocking on a message that is exactly * MAXMSGSIZE long. */ for (;;) { if (channel_wait(channel, fd, 0) != CW_READY) break; if (use_socket) len = sock_read(fd, (char *)buf, MAXMSGSIZE); else len = fd_read(fd, (char *)buf, MAXMSGSIZE); if (len <= 0) break; /* error or nothing more to read */ /* Store the read message in the queue. */ channel_save(channel, part, buf, len, FALSE, "RECV "); readlen += len; if (len < MAXMSGSIZE) break; /* did read everything that's available */ } /* Reading a disconnection (readlen == 0), or an error. */ if (readlen <= 0) ch_close_part_on_error(channel, part, (len < 0), func); #if defined(CH_HAS_GUI) && defined(FEAT_GUI_GTK) /* signal the main loop that there is something to read */ if (CH_HAS_GUI && gtk_main_level() > 0) gtk_main_quit(); #endif } /* * Read from RAW or NL "channel"/"part". Blocks until there is something to * read or the timeout expires. * Returns what was read in allocated memory. * Returns NULL in case of error or timeout. */ char_u * channel_read_block(channel_T *channel, ch_part_T part, int timeout) { char_u *buf; char_u *msg; ch_mode_T mode = channel->ch_part[part].ch_mode; sock_T fd = channel->ch_part[part].ch_fd; char_u *nl; readq_T *node; ch_logsn(channel, "Blocking %s read, timeout: %d msec", mode == MODE_RAW ? "RAW" : "NL", timeout); while (TRUE) { node = channel_peek(channel, part); if (node != NULL) { if (mode == MODE_RAW || (mode == MODE_NL && channel_first_nl(node) != NULL)) /* got a complete message */ break; if (channel_collapse(channel, part, mode == MODE_NL) == OK) continue; } /* Wait for up to the channel timeout. */ if (fd == INVALID_FD) return NULL; if (channel_wait(channel, fd, timeout) != CW_READY) { ch_log(channel, "Timed out"); return NULL; } channel_read(channel, part, "channel_read_block"); } /* We have a complete message now. */ if (mode == MODE_RAW) { msg = channel_get_all(channel, part); } else { char_u *p; buf = node->rq_buffer; nl = channel_first_nl(node); /* Convert NUL to NL, the internal representation. */ for (p = buf; p < nl && p < buf + node->rq_buflen; ++p) if (*p == NUL) *p = NL; if (nl + 1 == buf + node->rq_buflen) { /* get the whole buffer */ msg = channel_get(channel, part); *nl = NUL; } else { /* Copy the message into allocated memory and remove it from the * buffer. */ msg = vim_strnsave(buf, (int)(nl - buf)); channel_consume(channel, part, (int)(nl - buf) + 1); } } if (log_fd != NULL) ch_logn(channel, "Returning %d bytes", (int)STRLEN(msg)); return msg; } /* * Read one JSON message with ID "id" from "channel"/"part" and store the * result in "rettv". * When "id" is -1 accept any message; * Blocks until the message is received or the timeout is reached. */ static int channel_read_json_block( channel_T *channel, ch_part_T part, int timeout_arg, int id, typval_T **rettv) { int more; sock_T fd; int timeout; chanpart_T *chanpart = &channel->ch_part[part]; ch_log(channel, "Reading JSON"); if (id != -1) chanpart->ch_block_id = id; for (;;) { more = channel_parse_json(channel, part); /* search for message "id" */ if (channel_get_json(channel, part, id, TRUE, rettv) == OK) { chanpart->ch_block_id = 0; return OK; } if (!more) { /* Handle any other messages in the queue. If done some more * messages may have arrived. */ if (channel_parse_messages()) continue; /* Wait for up to the timeout. If there was an incomplete message * use the deadline for that. */ timeout = timeout_arg; if (chanpart->ch_wait_len > 0) { #ifdef WIN32 timeout = chanpart->ch_deadline - GetTickCount() + 1; #else { struct timeval now_tv; gettimeofday(&now_tv, NULL); timeout = (chanpart->ch_deadline.tv_sec - now_tv.tv_sec) * 1000 + (chanpart->ch_deadline.tv_usec - now_tv.tv_usec) / 1000 + 1; } #endif if (timeout < 0) { /* Something went wrong, channel_parse_json() didn't * discard message. Cancel waiting. */ chanpart->ch_wait_len = 0; timeout = timeout_arg; } else if (timeout > timeout_arg) timeout = timeout_arg; } fd = chanpart->ch_fd; if (fd == INVALID_FD || channel_wait(channel, fd, timeout) != CW_READY) { if (timeout == timeout_arg) { if (fd != INVALID_FD) ch_log(channel, "Timed out"); break; } } else channel_read(channel, part, "channel_read_json_block"); } } chanpart->ch_block_id = 0; return FAIL; } /* * Common for ch_read() and ch_readraw(). */ void common_channel_read(typval_T *argvars, typval_T *rettv, int raw) { channel_T *channel; ch_part_T part = PART_COUNT; jobopt_T opt; int mode; int timeout; int id = -1; typval_T *listtv = NULL; /* return an empty string by default */ rettv->v_type = VAR_STRING; rettv->vval.v_string = NULL; clear_job_options(&opt); if (get_job_options(&argvars[1], &opt, JO_TIMEOUT + JO_PART + JO_ID) == FAIL) goto theend; if (opt.jo_set & JO_PART) part = opt.jo_part; channel = get_channel_arg(&argvars[0], TRUE, TRUE, part); if (channel != NULL) { if (part == PART_COUNT) part = channel_part_read(channel); mode = channel_get_mode(channel, part); timeout = channel_get_timeout(channel, part); if (opt.jo_set & JO_TIMEOUT) timeout = opt.jo_timeout; if (raw || mode == MODE_RAW || mode == MODE_NL) rettv->vval.v_string = channel_read_block(channel, part, timeout); else { if (opt.jo_set & JO_ID) id = opt.jo_id; channel_read_json_block(channel, part, timeout, id, &listtv); if (listtv != NULL) { *rettv = *listtv; vim_free(listtv); } else { rettv->v_type = VAR_SPECIAL; rettv->vval.v_number = VVAL_NONE; } } } theend: free_job_options(&opt); } # if defined(WIN32) || defined(FEAT_GUI_X11) || defined(FEAT_GUI_GTK) \ || defined(PROTO) /* * Lookup the channel from the socket. Set "partp" to the fd index. * Returns NULL when the socket isn't found. */ channel_T * channel_fd2channel(sock_T fd, ch_part_T *partp) { channel_T *channel; ch_part_T part; if (fd != INVALID_FD) for (channel = first_channel; channel != NULL; channel = channel->ch_next) { for (part = PART_SOCK; part < PART_IN; ++part) if (channel->ch_part[part].ch_fd == fd) { *partp = part; return channel; } } return NULL; } # endif # if defined(WIN32) || defined(PROTO) /* * Check the channels for anything that is ready to be read. * The data is put in the read queue. */ void channel_handle_events(void) { channel_T *channel; ch_part_T part; sock_T fd; for (channel = first_channel; channel != NULL; channel = channel->ch_next) { /* check the socket and pipes */ for (part = PART_SOCK; part < PART_IN; ++part) { fd = channel->ch_part[part].ch_fd; if (fd != INVALID_FD) { int r = channel_wait(channel, fd, 0); if (r == CW_READY) channel_read(channel, part, "channel_handle_events"); else if (r == CW_ERROR) ch_close_part_on_error(channel, part, TRUE, "channel_handle_events"); } } } } # endif /* * Write "buf" (NUL terminated string) to "channel"/"part". * When "fun" is not NULL an error message might be given. * Return FAIL or OK. */ int channel_send( channel_T *channel, ch_part_T part, char_u *buf, int len, char *fun) { int res; sock_T fd; fd = channel->ch_part[part].ch_fd; if (fd == INVALID_FD) { if (!channel->ch_error && fun != NULL) { ch_errors(channel, "%s(): write while not connected", fun); EMSG2(_("E630: %s(): write while not connected"), fun); } channel->ch_error = TRUE; return FAIL; } if (log_fd != NULL) { ch_log_lead("SEND ", channel); fprintf(log_fd, "'"); ignored = (int)fwrite(buf, len, 1, log_fd); fprintf(log_fd, "'\n"); fflush(log_fd); did_log_msg = TRUE; } if (part == PART_SOCK) res = sock_write(fd, (char *)buf, len); else res = fd_write(fd, (char *)buf, len); if (res != len) { if (!channel->ch_error && fun != NULL) { ch_errors(channel, "%s(): write failed", fun); EMSG2(_("E631: %s(): write failed"), fun); } channel->ch_error = TRUE; return FAIL; } channel->ch_error = FALSE; return OK; } /* * Common for "ch_sendexpr()" and "ch_sendraw()". * Returns the channel if the caller should read the response. * Sets "part_read" to the read fd. * Otherwise returns NULL. */ static channel_T * send_common( typval_T *argvars, char_u *text, int id, int eval, jobopt_T *opt, char *fun, ch_part_T *part_read) { channel_T *channel; ch_part_T part_send; clear_job_options(opt); channel = get_channel_arg(&argvars[0], TRUE, FALSE, 0); if (channel == NULL) return NULL; part_send = channel_part_send(channel); *part_read = channel_part_read(channel); if (get_job_options(&argvars[2], opt, JO_CALLBACK + JO_TIMEOUT) == FAIL) return NULL; /* Set the callback. An empty callback means no callback and not reading * the response. With "ch_evalexpr()" and "ch_evalraw()" a callback is not * allowed. */ if (opt->jo_callback != NULL && *opt->jo_callback != NUL) { if (eval) { EMSG2(_("E917: Cannot use a callback with %s()"), fun); return NULL; } channel_set_req_callback(channel, *part_read, opt->jo_callback, opt->jo_partial, id); } if (channel_send(channel, part_send, text, (int)STRLEN(text), fun) == OK && opt->jo_callback == NULL) return channel; return NULL; } /* * common for "ch_evalexpr()" and "ch_sendexpr()" */ void ch_expr_common(typval_T *argvars, typval_T *rettv, int eval) { char_u *text; typval_T *listtv; channel_T *channel; int id; ch_mode_T ch_mode; ch_part_T part_send; ch_part_T part_read; jobopt_T opt; int timeout; /* return an empty string by default */ rettv->v_type = VAR_STRING; rettv->vval.v_string = NULL; channel = get_channel_arg(&argvars[0], TRUE, FALSE, 0); if (channel == NULL) return; part_send = channel_part_send(channel); ch_mode = channel_get_mode(channel, part_send); if (ch_mode == MODE_RAW || ch_mode == MODE_NL) { EMSG(_("E912: cannot use ch_evalexpr()/ch_sendexpr() with a raw or nl channel")); return; } id = ++channel->ch_last_msg_id; text = json_encode_nr_expr(id, &argvars[1], (ch_mode == MODE_JS ? JSON_JS : 0) | JSON_NL); if (text == NULL) return; channel = send_common(argvars, text, id, eval, &opt, eval ? "ch_evalexpr" : "ch_sendexpr", &part_read); vim_free(text); if (channel != NULL && eval) { if (opt.jo_set & JO_TIMEOUT) timeout = opt.jo_timeout; else timeout = channel_get_timeout(channel, part_read); if (channel_read_json_block(channel, part_read, timeout, id, &listtv) == OK) { list_T *list = listtv->vval.v_list; /* Move the item from the list and then change the type to * avoid the value being freed. */ *rettv = list->lv_last->li_tv; list->lv_last->li_tv.v_type = VAR_NUMBER; free_tv(listtv); } } free_job_options(&opt); } /* * common for "ch_evalraw()" and "ch_sendraw()" */ void ch_raw_common(typval_T *argvars, typval_T *rettv, int eval) { char_u buf[NUMBUFLEN]; char_u *text; channel_T *channel; ch_part_T part_read; jobopt_T opt; int timeout; /* return an empty string by default */ rettv->v_type = VAR_STRING; rettv->vval.v_string = NULL; text = get_tv_string_buf(&argvars[1], buf); channel = send_common(argvars, text, 0, eval, &opt, eval ? "ch_evalraw" : "ch_sendraw", &part_read); if (channel != NULL && eval) { if (opt.jo_set & JO_TIMEOUT) timeout = opt.jo_timeout; else timeout = channel_get_timeout(channel, part_read); rettv->vval.v_string = channel_read_block(channel, part_read, timeout); } free_job_options(&opt); } # if (defined(UNIX) && !defined(HAVE_SELECT)) || defined(PROTO) /* * Add open channels to the poll struct. * Return the adjusted struct index. * The type of "fds" is hidden to avoid problems with the function proto. */ int channel_poll_setup(int nfd_in, void *fds_in) { int nfd = nfd_in; channel_T *channel; struct pollfd *fds = fds_in; ch_part_T part; for (channel = first_channel; channel != NULL; channel = channel->ch_next) { for (part = PART_SOCK; part < PART_IN; ++part) { chanpart_T *ch_part = &channel->ch_part[part]; if (ch_part->ch_fd != INVALID_FD) { ch_part->ch_poll_idx = nfd; fds[nfd].fd = ch_part->ch_fd; fds[nfd].events = POLLIN; nfd++; } else channel->ch_part[part].ch_poll_idx = -1; } } nfd = channel_fill_poll_write(nfd, fds); return nfd; } /* * The type of "fds" is hidden to avoid problems with the function proto. */ int channel_poll_check(int ret_in, void *fds_in) { int ret = ret_in; channel_T *channel; struct pollfd *fds = fds_in; ch_part_T part; int idx; chanpart_T *in_part; for (channel = first_channel; channel != NULL; channel = channel->ch_next) { for (part = PART_SOCK; part < PART_IN; ++part) { idx = channel->ch_part[part].ch_poll_idx; if (ret > 0 && idx != -1 && (fds[idx].revents & POLLIN)) { channel_read(channel, part, "channel_poll_check"); --ret; } } in_part = &channel->ch_part[PART_IN]; idx = in_part->ch_poll_idx; if (ret > 0 && idx != -1 && (fds[idx].revents & POLLOUT)) { if (in_part->ch_buf_append) { if (in_part->ch_bufref.br_buf != NULL) channel_write_new_lines(in_part->ch_bufref.br_buf); } else channel_write_in(channel); --ret; } } return ret; } # endif /* UNIX && !HAVE_SELECT */ # if (!defined(WIN32) && defined(HAVE_SELECT)) || defined(PROTO) /* * The "fd_set" type is hidden to avoid problems with the function proto. */ int channel_select_setup(int maxfd_in, void *rfds_in, void *wfds_in) { int maxfd = maxfd_in; channel_T *channel; fd_set *rfds = rfds_in; fd_set *wfds = wfds_in; ch_part_T part; for (channel = first_channel; channel != NULL; channel = channel->ch_next) { for (part = PART_SOCK; part < PART_IN; ++part) { sock_T fd = channel->ch_part[part].ch_fd; if (fd != INVALID_FD) { FD_SET((int)fd, rfds); if (maxfd < (int)fd) maxfd = (int)fd; } } } maxfd = channel_fill_wfds(maxfd, wfds); return maxfd; } /* * The "fd_set" type is hidden to avoid problems with the function proto. */ int channel_select_check(int ret_in, void *rfds_in, void *wfds_in) { int ret = ret_in; channel_T *channel; fd_set *rfds = rfds_in; fd_set *wfds = wfds_in; ch_part_T part; chanpart_T *in_part; for (channel = first_channel; channel != NULL; channel = channel->ch_next) { for (part = PART_SOCK; part < PART_IN; ++part) { sock_T fd = channel->ch_part[part].ch_fd; if (ret > 0 && fd != INVALID_FD && FD_ISSET(fd, rfds)) { channel_read(channel, part, "channel_select_check"); --ret; } } in_part = &channel->ch_part[PART_IN]; if (ret > 0 && in_part->ch_fd != INVALID_FD && FD_ISSET(in_part->ch_fd, wfds)) { if (in_part->ch_buf_append) { if (in_part->ch_bufref.br_buf != NULL) channel_write_new_lines(in_part->ch_bufref.br_buf); } else channel_write_in(channel); --ret; } } return ret; } # endif /* !WIN32 && HAVE_SELECT */ /* * Execute queued up commands. * Invoked from the main loop when it's safe to execute received commands. * Return TRUE when something was done. */ int channel_parse_messages(void) { channel_T *channel = first_channel; int ret = FALSE; int r; ch_part_T part = PART_SOCK; #ifdef ELAPSED_FUNC ELAPSED_TYPE start_tv; ELAPSED_INIT(start_tv); #endif ++safe_to_invoke_callback; /* Only do this message when another message was given, otherwise we get * lots of them. */ if (did_log_msg) { ch_log(NULL, "looking for messages on channels"); did_log_msg = FALSE; } while (channel != NULL) { if (channel->ch_to_be_closed == 0) { channel->ch_to_be_closed = (1 << PART_COUNT); channel_close_now(channel); /* channel may have been freed, start over */ channel = first_channel; continue; } if (channel->ch_to_be_freed) { channel_free(channel); /* channel has been freed, start over */ channel = first_channel; continue; } if (channel->ch_refcount == 0 && !channel_still_useful(channel)) { /* channel is no longer useful, free it */ channel_free(channel); channel = first_channel; part = PART_SOCK; continue; } if (channel->ch_part[part].ch_fd != INVALID_FD || channel_has_readahead(channel, part)) { /* Increase the refcount, in case the handler causes the channel * to be unreferenced or closed. */ ++channel->ch_refcount; r = may_invoke_callback(channel, part); if (r == OK) ret = TRUE; if (channel_unref(channel) || (r == OK #ifdef ELAPSED_FUNC /* Limit the time we loop here to 100 msec, otherwise * Vim becomes unresponsive when the callback takes * more than a bit of time. */ && ELAPSED_FUNC(start_tv) < 100L #endif )) { /* channel was freed or something was done, start over */ channel = first_channel; part = PART_SOCK; continue; } } if (part < PART_ERR) ++part; else { channel = channel->ch_next; part = PART_SOCK; } } if (channel_need_redraw) { channel_need_redraw = FALSE; redraw_after_callback(); } --safe_to_invoke_callback; return ret; } /* * Return TRUE if any channel has readahead. That means we should not block on * waiting for input. */ int channel_any_readahead(void) { channel_T *channel = first_channel; ch_part_T part = PART_SOCK; while (channel != NULL) { if (channel_has_readahead(channel, part)) return TRUE; if (part < PART_ERR) ++part; else { channel = channel->ch_next; part = PART_SOCK; } } return FALSE; } /* * Mark references to lists used in channels. */ int set_ref_in_channel(int copyID) { int abort = FALSE; channel_T *channel; typval_T tv; for (channel = first_channel; channel != NULL; channel = channel->ch_next) if (channel_still_useful(channel)) { tv.v_type = VAR_CHANNEL; tv.vval.v_channel = channel; abort = abort || set_ref_in_item(&tv, copyID, NULL, NULL); } return abort; } /* * Return the "part" to write to for "channel". */ ch_part_T channel_part_send(channel_T *channel) { if (channel->CH_SOCK_FD == INVALID_FD) return PART_IN; return PART_SOCK; } /* * Return the default "part" to read from for "channel". */ ch_part_T channel_part_read(channel_T *channel) { if (channel->CH_SOCK_FD == INVALID_FD) return PART_OUT; return PART_SOCK; } /* * Return the mode of "channel"/"part" * If "channel" is invalid returns MODE_JSON. */ ch_mode_T channel_get_mode(channel_T *channel, ch_part_T part) { if (channel == NULL) return MODE_JSON; return channel->ch_part[part].ch_mode; } /* * Return the timeout of "channel"/"part" */ int channel_get_timeout(channel_T *channel, ch_part_T part) { return channel->ch_part[part].ch_timeout; } static int handle_mode(typval_T *item, jobopt_T *opt, ch_mode_T *modep, int jo) { char_u *val = get_tv_string(item); opt->jo_set |= jo; if (STRCMP(val, "nl") == 0) *modep = MODE_NL; else if (STRCMP(val, "raw") == 0) *modep = MODE_RAW; else if (STRCMP(val, "js") == 0) *modep = MODE_JS; else if (STRCMP(val, "json") == 0) *modep = MODE_JSON; else { EMSG2(_(e_invarg2), val); return FAIL; } return OK; } static int handle_io(typval_T *item, ch_part_T part, jobopt_T *opt) { char_u *val = get_tv_string(item); opt->jo_set |= JO_OUT_IO << (part - PART_OUT); if (STRCMP(val, "null") == 0) opt->jo_io[part] = JIO_NULL; else if (STRCMP(val, "pipe") == 0) opt->jo_io[part] = JIO_PIPE; else if (STRCMP(val, "file") == 0) opt->jo_io[part] = JIO_FILE; else if (STRCMP(val, "buffer") == 0) opt->jo_io[part] = JIO_BUFFER; else if (STRCMP(val, "out") == 0 && part == PART_ERR) opt->jo_io[part] = JIO_OUT; else { EMSG2(_(e_invarg2), val); return FAIL; } return OK; } /* * Clear a jobopt_T before using it. */ void clear_job_options(jobopt_T *opt) { vim_memset(opt, 0, sizeof(jobopt_T)); } /* * Free any members of a jobopt_T. */ void free_job_options(jobopt_T *opt) { if (opt->jo_partial != NULL) partial_unref(opt->jo_partial); else if (opt->jo_callback != NULL) func_unref(opt->jo_callback); if (opt->jo_out_partial != NULL) partial_unref(opt->jo_out_partial); else if (opt->jo_out_cb != NULL) func_unref(opt->jo_out_cb); if (opt->jo_err_partial != NULL) partial_unref(opt->jo_err_partial); else if (opt->jo_err_cb != NULL) func_unref(opt->jo_err_cb); if (opt->jo_close_partial != NULL) partial_unref(opt->jo_close_partial); else if (opt->jo_close_cb != NULL) func_unref(opt->jo_close_cb); if (opt->jo_exit_partial != NULL) partial_unref(opt->jo_exit_partial); else if (opt->jo_exit_cb != NULL) func_unref(opt->jo_exit_cb); } /* * Get the PART_ number from the first character of an option name. */ static int part_from_char(int c) { return c == 'i' ? PART_IN : c == 'o' ? PART_OUT: PART_ERR; } /* * Get the option entries from the dict in "tv", parse them and put the result * in "opt". * Only accept options in "supported". * If an option value is invalid return FAIL. */ int get_job_options(typval_T *tv, jobopt_T *opt, int supported) { typval_T *item; char_u *val; dict_T *dict; int todo; hashitem_T *hi; ch_part_T part; opt->jo_set = 0; if (tv->v_type == VAR_UNKNOWN) return OK; if (tv->v_type != VAR_DICT) { EMSG(_(e_invarg)); return FAIL; } dict = tv->vval.v_dict; if (dict == NULL) return OK; todo = (int)dict->dv_hashtab.ht_used; for (hi = dict->dv_hashtab.ht_array; todo > 0; ++hi) if (!HASHITEM_EMPTY(hi)) { item = &dict_lookup(hi)->di_tv; if (STRCMP(hi->hi_key, "mode") == 0) { if (!(supported & JO_MODE)) break; if (handle_mode(item, opt, &opt->jo_mode, JO_MODE) == FAIL) return FAIL; } else if (STRCMP(hi->hi_key, "in_mode") == 0) { if (!(supported & JO_IN_MODE)) break; if (handle_mode(item, opt, &opt->jo_in_mode, JO_IN_MODE) == FAIL) return FAIL; } else if (STRCMP(hi->hi_key, "out_mode") == 0) { if (!(supported & JO_OUT_MODE)) break; if (handle_mode(item, opt, &opt->jo_out_mode, JO_OUT_MODE) == FAIL) return FAIL; } else if (STRCMP(hi->hi_key, "err_mode") == 0) { if (!(supported & JO_ERR_MODE)) break; if (handle_mode(item, opt, &opt->jo_err_mode, JO_ERR_MODE) == FAIL) return FAIL; } else if (STRCMP(hi->hi_key, "in_io") == 0 || STRCMP(hi->hi_key, "out_io") == 0 || STRCMP(hi->hi_key, "err_io") == 0) { if (!(supported & JO_OUT_IO)) break; if (handle_io(item, part_from_char(*hi->hi_key), opt) == FAIL) return FAIL; } else if (STRCMP(hi->hi_key, "in_name") == 0 || STRCMP(hi->hi_key, "out_name") == 0 || STRCMP(hi->hi_key, "err_name") == 0) { part = part_from_char(*hi->hi_key); if (!(supported & JO_OUT_IO)) break; opt->jo_set |= JO_OUT_NAME << (part - PART_OUT); opt->jo_io_name[part] = get_tv_string_buf_chk(item, opt->jo_io_name_buf[part]); } else if (STRCMP(hi->hi_key, "in_buf") == 0 || STRCMP(hi->hi_key, "out_buf") == 0 || STRCMP(hi->hi_key, "err_buf") == 0) { part = part_from_char(*hi->hi_key); if (!(supported & JO_OUT_IO)) break; opt->jo_set |= JO_OUT_BUF << (part - PART_OUT); opt->jo_io_buf[part] = get_tv_number(item); if (opt->jo_io_buf[part] <= 0) { EMSG2(_(e_invarg2), get_tv_string(item)); return FAIL; } if (buflist_findnr(opt->jo_io_buf[part]) == NULL) { EMSGN(_(e_nobufnr), (long)opt->jo_io_buf[part]); return FAIL; } } else if (STRCMP(hi->hi_key, "out_modifiable") == 0 || STRCMP(hi->hi_key, "err_modifiable") == 0) { part = part_from_char(*hi->hi_key); if (!(supported & JO_OUT_IO)) break; opt->jo_set |= JO_OUT_MODIFIABLE << (part - PART_OUT); opt->jo_modifiable[part] = get_tv_number(item); } else if (STRCMP(hi->hi_key, "out_msg") == 0 || STRCMP(hi->hi_key, "err_msg") == 0) { part = part_from_char(*hi->hi_key); if (!(supported & JO_OUT_IO)) break; opt->jo_set2 |= JO2_OUT_MSG << (part - PART_OUT); opt->jo_message[part] = get_tv_number(item); } else if (STRCMP(hi->hi_key, "in_top") == 0 || STRCMP(hi->hi_key, "in_bot") == 0) { linenr_T *lp; if (!(supported & JO_OUT_IO)) break; if (hi->hi_key[3] == 't') { lp = &opt->jo_in_top; opt->jo_set |= JO_IN_TOP; } else { lp = &opt->jo_in_bot; opt->jo_set |= JO_IN_BOT; } *lp = get_tv_number(item); if (*lp < 0) { EMSG2(_(e_invarg2), get_tv_string(item)); return FAIL; } } else if (STRCMP(hi->hi_key, "channel") == 0) { if (!(supported & JO_OUT_IO)) break; opt->jo_set |= JO_CHANNEL; if (item->v_type != VAR_CHANNEL) { EMSG2(_(e_invarg2), "channel"); return FAIL; } opt->jo_channel = item->vval.v_channel; } else if (STRCMP(hi->hi_key, "callback") == 0) { if (!(supported & JO_CALLBACK)) break; opt->jo_set |= JO_CALLBACK; opt->jo_callback = get_callback(item, &opt->jo_partial); if (opt->jo_callback == NULL) { EMSG2(_(e_invarg2), "callback"); return FAIL; } } else if (STRCMP(hi->hi_key, "out_cb") == 0) { if (!(supported & JO_OUT_CALLBACK)) break; opt->jo_set |= JO_OUT_CALLBACK; opt->jo_out_cb = get_callback(item, &opt->jo_out_partial); if (opt->jo_out_cb == NULL) { EMSG2(_(e_invarg2), "out_cb"); return FAIL; } } else if (STRCMP(hi->hi_key, "err_cb") == 0) { if (!(supported & JO_ERR_CALLBACK)) break; opt->jo_set |= JO_ERR_CALLBACK; opt->jo_err_cb = get_callback(item, &opt->jo_err_partial); if (opt->jo_err_cb == NULL) { EMSG2(_(e_invarg2), "err_cb"); return FAIL; } } else if (STRCMP(hi->hi_key, "close_cb") == 0) { if (!(supported & JO_CLOSE_CALLBACK)) break; opt->jo_set |= JO_CLOSE_CALLBACK; opt->jo_close_cb = get_callback(item, &opt->jo_close_partial); if (opt->jo_close_cb == NULL) { EMSG2(_(e_invarg2), "close_cb"); return FAIL; } } else if (STRCMP(hi->hi_key, "drop") == 0) { int never = FALSE; val = get_tv_string(item); if (STRCMP(val, "never") == 0) never = TRUE; else if (STRCMP(val, "auto") != 0) { EMSG2(_(e_invarg2), "drop"); return FAIL; } opt->jo_drop_never = never; } else if (STRCMP(hi->hi_key, "exit_cb") == 0) { if (!(supported & JO_EXIT_CB)) break; opt->jo_set |= JO_EXIT_CB; opt->jo_exit_cb = get_callback(item, &opt->jo_exit_partial); if (opt->jo_exit_cb == NULL) { EMSG2(_(e_invarg2), "exit_cb"); return FAIL; } } else if (STRCMP(hi->hi_key, "waittime") == 0) { if (!(supported & JO_WAITTIME)) break; opt->jo_set |= JO_WAITTIME; opt->jo_waittime = get_tv_number(item); } else if (STRCMP(hi->hi_key, "timeout") == 0) { if (!(supported & JO_TIMEOUT)) break; opt->jo_set |= JO_TIMEOUT; opt->jo_timeout = get_tv_number(item); } else if (STRCMP(hi->hi_key, "out_timeout") == 0) { if (!(supported & JO_OUT_TIMEOUT)) break; opt->jo_set |= JO_OUT_TIMEOUT; opt->jo_out_timeout = get_tv_number(item); } else if (STRCMP(hi->hi_key, "err_timeout") == 0) { if (!(supported & JO_ERR_TIMEOUT)) break; opt->jo_set |= JO_ERR_TIMEOUT; opt->jo_err_timeout = get_tv_number(item); } else if (STRCMP(hi->hi_key, "part") == 0) { if (!(supported & JO_PART)) break; opt->jo_set |= JO_PART; val = get_tv_string(item); if (STRCMP(val, "err") == 0) opt->jo_part = PART_ERR; else if (STRCMP(val, "out") == 0) opt->jo_part = PART_OUT; else { EMSG2(_(e_invarg2), val); return FAIL; } } else if (STRCMP(hi->hi_key, "id") == 0) { if (!(supported & JO_ID)) break; opt->jo_set |= JO_ID; opt->jo_id = get_tv_number(item); } else if (STRCMP(hi->hi_key, "stoponexit") == 0) { if (!(supported & JO_STOPONEXIT)) break; opt->jo_set |= JO_STOPONEXIT; opt->jo_stoponexit = get_tv_string_buf_chk(item, opt->jo_soe_buf); if (opt->jo_stoponexit == NULL) { EMSG2(_(e_invarg2), "stoponexit"); return FAIL; } } else if (STRCMP(hi->hi_key, "block_write") == 0) { if (!(supported & JO_BLOCK_WRITE)) break; opt->jo_set |= JO_BLOCK_WRITE; opt->jo_block_write = get_tv_number(item); } else break; --todo; } if (todo > 0) { EMSG2(_(e_invarg2), hi->hi_key); return FAIL; } return OK; } /* * Get the channel from the argument. * Returns NULL if the handle is invalid. * When "check_open" is TRUE check that the channel can be used. * When "reading" is TRUE "check_open" considers typeahead useful. * "part" is used to check typeahead, when PART_COUNT use the default part. */ channel_T * get_channel_arg(typval_T *tv, int check_open, int reading, ch_part_T part) { channel_T *channel = NULL; int has_readahead = FALSE; if (tv->v_type == VAR_JOB) { if (tv->vval.v_job != NULL) channel = tv->vval.v_job->jv_channel; } else if (tv->v_type == VAR_CHANNEL) { channel = tv->vval.v_channel; } else { EMSG2(_(e_invarg2), get_tv_string(tv)); return NULL; } if (channel != NULL && reading) has_readahead = channel_has_readahead(channel, part != PART_COUNT ? part : channel_part_read(channel)); if (check_open && (channel == NULL || (!channel_is_open(channel) && !(reading && has_readahead)))) { EMSG(_("E906: not an open channel")); return NULL; } return channel; } static job_T *first_job = NULL; static void job_free_contents(job_T *job) { ch_log(job->jv_channel, "Freeing job"); if (job->jv_channel != NULL) { /* The link from the channel to the job doesn't count as a reference, * thus don't decrement the refcount of the job. The reference from * the job to the channel does count the reference, decrement it and * NULL the reference. We don't set ch_job_killed, unreferencing the * job doesn't mean it stops running. */ job->jv_channel->ch_job = NULL; channel_unref(job->jv_channel); } mch_clear_job(job); vim_free(job->jv_stoponexit); free_callback(job->jv_exit_cb, job->jv_exit_partial); } static void job_free_job(job_T *job) { if (job->jv_next != NULL) job->jv_next->jv_prev = job->jv_prev; if (job->jv_prev == NULL) first_job = job->jv_next; else job->jv_prev->jv_next = job->jv_next; vim_free(job); } static void job_free(job_T *job) { if (!in_free_unref_items) { job_free_contents(job); job_free_job(job); } } #if defined(EXITFREE) || defined(PROTO) void job_free_all(void) { while (first_job != NULL) job_free(first_job); } #endif /* * Return TRUE if we need to check if the process of "job" has ended. */ static int job_need_end_check(job_T *job) { return job->jv_status == JOB_STARTED && (job->jv_stoponexit != NULL || job->jv_exit_cb != NULL); } /* * Return TRUE if the channel of "job" is still useful. */ static int job_channel_still_useful(job_T *job) { return job->jv_channel != NULL && channel_still_useful(job->jv_channel); } /* * Return TRUE if the job should not be freed yet. Do not free the job when * it has not ended yet and there is a "stoponexit" flag, an exit callback * or when the associated channel will do something with the job output. */ static int job_still_useful(job_T *job) { return job_need_end_check(job) || job_channel_still_useful(job); } /* * NOTE: Must call job_cleanup() only once right after the status of "job" * changed to JOB_ENDED (i.e. after job_status() returned "dead" first or * mch_detect_ended_job() returned non-NULL). */ static void job_cleanup(job_T *job) { if (job->jv_status != JOB_ENDED) return; /* Ready to cleanup the job. */ job->jv_status = JOB_FINISHED; if (job->jv_exit_cb != NULL) { typval_T argv[3]; typval_T rettv; int dummy; /* Invoke the exit callback. Make sure the refcount is > 0. */ ++job->jv_refcount; argv[0].v_type = VAR_JOB; argv[0].vval.v_job = job; argv[1].v_type = VAR_NUMBER; argv[1].vval.v_number = job->jv_exitval; call_func(job->jv_exit_cb, (int)STRLEN(job->jv_exit_cb), &rettv, 2, argv, NULL, 0L, 0L, &dummy, TRUE, job->jv_exit_partial, NULL); clear_tv(&rettv); --job->jv_refcount; channel_need_redraw = TRUE; } /* Do not free the job in case the close callback of the associated channel * isn't invoked yet and may get information by job_info(). */ if (job->jv_refcount == 0 && !job_channel_still_useful(job)) { /* The job was already unreferenced and the associated channel was * detached, now that it ended it can be freed. Careful: caller must * not use "job" after this! */ job_free(job); } } /* * Mark references in jobs that are still useful. */ int set_ref_in_job(int copyID) { int abort = FALSE; job_T *job; typval_T tv; for (job = first_job; job != NULL; job = job->jv_next) if (job_still_useful(job)) { tv.v_type = VAR_JOB; tv.vval.v_job = job; abort = abort || set_ref_in_item(&tv, copyID, NULL, NULL); } return abort; } /* * Dereference "job". Note that after this "job" may have been freed. */ void job_unref(job_T *job) { if (job != NULL && --job->jv_refcount <= 0) { /* Do not free the job if there is a channel where the close callback * may get the job info. */ if (!job_channel_still_useful(job)) { /* Do not free the job when it has not ended yet and there is a * "stoponexit" flag or an exit callback. */ if (!job_need_end_check(job)) { job_free(job); } else if (job->jv_channel != NULL) { /* Do remove the link to the channel, otherwise it hangs * around until Vim exits. See job_free() for refcount. */ ch_log(job->jv_channel, "detaching channel from job"); job->jv_channel->ch_job = NULL; channel_unref(job->jv_channel); job->jv_channel = NULL; } } } } int free_unused_jobs_contents(int copyID, int mask) { int did_free = FALSE; job_T *job; for (job = first_job; job != NULL; job = job->jv_next) if ((job->jv_copyID & mask) != (copyID & mask) && !job_still_useful(job)) { /* Free the channel and ordinary items it contains, but don't * recurse into Lists, Dictionaries etc. */ job_free_contents(job); did_free = TRUE; } return did_free; } void free_unused_jobs(int copyID, int mask) { job_T *job; job_T *job_next; for (job = first_job; job != NULL; job = job_next) { job_next = job->jv_next; if ((job->jv_copyID & mask) != (copyID & mask) && !job_still_useful(job)) { /* Free the job struct itself. */ job_free_job(job); } } } /* * Allocate a job. Sets the refcount to one and sets options default. */ static job_T * job_alloc(void) { job_T *job; job = (job_T *)alloc_clear(sizeof(job_T)); if (job != NULL) { job->jv_refcount = 1; job->jv_stoponexit = vim_strsave((char_u *)"term"); if (first_job != NULL) { first_job->jv_prev = job; job->jv_next = first_job; } first_job = job; } return job; } void job_set_options(job_T *job, jobopt_T *opt) { if (opt->jo_set & JO_STOPONEXIT) { vim_free(job->jv_stoponexit); if (opt->jo_stoponexit == NULL || *opt->jo_stoponexit == NUL) job->jv_stoponexit = NULL; else job->jv_stoponexit = vim_strsave(opt->jo_stoponexit); } if (opt->jo_set & JO_EXIT_CB) { free_callback(job->jv_exit_cb, job->jv_exit_partial); if (opt->jo_exit_cb == NULL || *opt->jo_exit_cb == NUL) { job->jv_exit_cb = NULL; job->jv_exit_partial = NULL; } else { job->jv_exit_partial = opt->jo_exit_partial; if (job->jv_exit_partial != NULL) { job->jv_exit_cb = opt->jo_exit_cb; ++job->jv_exit_partial->pt_refcount; } else { job->jv_exit_cb = vim_strsave(opt->jo_exit_cb); func_ref(job->jv_exit_cb); } } } } /* * Called when Vim is exiting: kill all jobs that have the "stoponexit" flag. */ void job_stop_on_exit(void) { job_T *job; for (job = first_job; job != NULL; job = job->jv_next) if (job->jv_status == JOB_STARTED && job->jv_stoponexit != NULL) mch_stop_job(job, job->jv_stoponexit); } /* * Return TRUE when there is any job that has an exit callback and might exit, * which means job_check_ended() should be called more often. */ int has_pending_job(void) { job_T *job; for (job = first_job; job != NULL; job = job->jv_next) /* Only should check if the channel has been closed, if the channel is * open the job won't exit. */ if (job->jv_status == JOB_STARTED && job->jv_exit_cb != NULL && !job_channel_still_useful(job)) return TRUE; return FALSE; } #define MAX_CHECK_ENDED 8 /* * Called once in a while: check if any jobs that seem useful have ended. */ void job_check_ended(void) { int i; if (first_job == NULL) return; for (i = 0; i < MAX_CHECK_ENDED; ++i) { /* NOTE: mch_detect_ended_job() must only return a job of which the * status was just set to JOB_ENDED. */ job_T *job = mch_detect_ended_job(first_job); if (job == NULL) break; job_cleanup(job); /* may free "job" */ } if (channel_need_redraw) { channel_need_redraw = FALSE; redraw_after_callback(); } } /* * "job_start()" function */ job_T * job_start(typval_T *argvars, jobopt_T *opt_arg) { job_T *job; char_u *cmd = NULL; #if defined(UNIX) # define USE_ARGV char **argv = NULL; int argc = 0; #else garray_T ga; #endif jobopt_T opt; ch_part_T part; job = job_alloc(); if (job == NULL) return NULL; job->jv_status = JOB_FAILED; #ifndef USE_ARGV ga_init2(&ga, (int)sizeof(char*), 20); #endif if (opt_arg != NULL) opt = *opt_arg; else { /* Default mode is NL. */ clear_job_options(&opt); opt.jo_mode = MODE_NL; if (get_job_options(&argvars[1], &opt, JO_MODE_ALL + JO_CB_ALL + JO_TIMEOUT_ALL + JO_STOPONEXIT + JO_EXIT_CB + JO_OUT_IO + JO_BLOCK_WRITE) == FAIL) goto theend; } /* Check that when io is "file" that there is a file name. */ for (part = PART_OUT; part < PART_COUNT; ++part) if ((opt.jo_set & (JO_OUT_IO << (part - PART_OUT))) && opt.jo_io[part] == JIO_FILE && (!(opt.jo_set & (JO_OUT_NAME << (part - PART_OUT))) || *opt.jo_io_name[part] == NUL)) { EMSG(_("E920: _io file requires _name to be set")); goto theend; } if ((opt.jo_set & JO_IN_IO) && opt.jo_io[PART_IN] == JIO_BUFFER) { buf_T *buf = NULL; /* check that we can find the buffer before starting the job */ if (opt.jo_set & JO_IN_BUF) { buf = buflist_findnr(opt.jo_io_buf[PART_IN]); if (buf == NULL) EMSGN(_(e_nobufnr), (long)opt.jo_io_buf[PART_IN]); } else if (!(opt.jo_set & JO_IN_NAME)) { EMSG(_("E915: in_io buffer requires in_buf or in_name to be set")); } else buf = buflist_find_by_name(opt.jo_io_name[PART_IN], FALSE); if (buf == NULL) goto theend; if (buf->b_ml.ml_mfp == NULL) { char_u numbuf[NUMBUFLEN]; char_u *s; if (opt.jo_set & JO_IN_BUF) { sprintf((char *)numbuf, "%d", opt.jo_io_buf[PART_IN]); s = numbuf; } else s = opt.jo_io_name[PART_IN]; EMSG2(_("E918: buffer must be loaded: %s"), s); goto theend; } job->jv_in_buf = buf; } job_set_options(job, &opt); if (argvars[0].v_type == VAR_STRING) { /* Command is a string. */ cmd = argvars[0].vval.v_string; if (cmd == NULL || *cmd == NUL) { EMSG(_(e_invarg)); goto theend; } #ifdef USE_ARGV if (mch_parse_cmd(cmd, FALSE, &argv, &argc) == FAIL) goto theend; argv[argc] = NULL; #endif } else if (argvars[0].v_type != VAR_LIST || argvars[0].vval.v_list == NULL || argvars[0].vval.v_list->lv_len < 1) { EMSG(_(e_invarg)); goto theend; } else { list_T *l = argvars[0].vval.v_list; listitem_T *li; char_u *s; #ifdef USE_ARGV /* Pass argv[] to mch_call_shell(). */ argv = (char **)alloc(sizeof(char *) * (l->lv_len + 1)); if (argv == NULL) goto theend; #endif for (li = l->lv_first; li != NULL; li = li->li_next) { s = get_tv_string_chk(&li->li_tv); if (s == NULL) goto theend; #ifdef USE_ARGV argv[argc++] = (char *)s; #else /* Only escape when needed, double quotes are not always allowed. */ if (li != l->lv_first && vim_strpbrk(s, (char_u *)" \t\"") != NULL) { # ifdef WIN32 int old_ssl = p_ssl; /* This is using CreateProcess, not cmd.exe. Always use * double quote and backslashes. */ p_ssl = 0; # endif s = vim_strsave_shellescape(s, FALSE, TRUE); # ifdef WIN32 p_ssl = old_ssl; # endif if (s == NULL) goto theend; ga_concat(&ga, s); vim_free(s); } else ga_concat(&ga, s); if (li->li_next != NULL) ga_append(&ga, ' '); #endif } #ifdef USE_ARGV argv[argc] = NULL; #else cmd = ga.ga_data; #endif } #ifdef USE_ARGV if (ch_log_active()) { garray_T ga; int i; ga_init2(&ga, (int)sizeof(char), 200); for (i = 0; i < argc; ++i) { if (i > 0) ga_concat(&ga, (char_u *)" "); ga_concat(&ga, (char_u *)argv[i]); } ch_logs(NULL, "Starting job: %s", (char *)ga.ga_data); ga_clear(&ga); } mch_start_job(argv, job, &opt); #else ch_logs(NULL, "Starting job: %s", (char *)cmd); mch_start_job((char *)cmd, job, &opt); #endif /* If the channel is reading from a buffer, write lines now. */ if (job->jv_channel != NULL) channel_write_in(job->jv_channel); theend: #ifdef USE_ARGV vim_free(argv); #else vim_free(ga.ga_data); #endif free_job_options(&opt); return job; } /* * Get the status of "job" and invoke the exit callback when needed. * The returned string is not allocated. */ char * job_status(job_T *job) { char *result; if (job->jv_status >= JOB_ENDED) /* No need to check, dead is dead. */ result = "dead"; else if (job->jv_status == JOB_FAILED) result = "fail"; else { result = mch_job_status(job); if (job->jv_status == JOB_ENDED) job_cleanup(job); } return result; } /* * Implementation of job_info(). */ void job_info(job_T *job, dict_T *dict) { dictitem_T *item; varnumber_T nr; dict_add_nr_str(dict, "status", 0L, (char_u *)job_status(job)); item = dictitem_alloc((char_u *)"channel"); if (item == NULL) return; item->di_tv.v_lock = 0; item->di_tv.v_type = VAR_CHANNEL; item->di_tv.vval.v_channel = job->jv_channel; if (job->jv_channel != NULL) ++job->jv_channel->ch_refcount; if (dict_add(dict, item) == FAIL) dictitem_free(item); #ifdef UNIX nr = job->jv_pid; #else nr = job->jv_proc_info.dwProcessId; #endif dict_add_nr_str(dict, "process", nr, NULL); dict_add_nr_str(dict, "exitval", job->jv_exitval, NULL); dict_add_nr_str(dict, "exit_cb", 0L, job->jv_exit_cb); dict_add_nr_str(dict, "stoponexit", 0L, job->jv_stoponexit); } int job_stop(job_T *job, typval_T *argvars) { char_u *arg; if (argvars[1].v_type == VAR_UNKNOWN) arg = (char_u *)""; else { arg = get_tv_string_chk(&argvars[1]); if (arg == NULL) { EMSG(_(e_invarg)); return 0; } } if (job->jv_status == JOB_ENDED) { ch_log(job->jv_channel, "Job has already ended, job_stop() skipped"); return 0; } ch_logs(job->jv_channel, "Stopping job with '%s'", (char *)arg); if (mch_stop_job(job, arg) == FAIL) return 0; /* Assume that only "kill" will kill the job. */ if (job->jv_channel != NULL && STRCMP(arg, "kill") == 0) job->jv_channel->ch_job_killed = TRUE; /* We don't try freeing the job, obviously the caller still has a * reference to it. */ return 1; } #endif /* FEAT_JOB_CHANNEL */