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eac66b0281
This lays further groundwork for the OS X GTK3 port, which is going to have to deal with multiple sessions sharing the same process. gtkwin.c was a bit too monolithic for this, since it included some process-global runtime state (timers, toplevel callbacks), some process startup stuff (gtk_init, gtk_main, argv processing) and some per-session-window stuff. The per-session stuff remains in gtkwin.c, with the top-level function now being new_session_window() taking a Conf. The new gtkmain.c contains the outer skeleton of pt_main(), handling argv processing and one-off startup stuff like setlocale; and the new gtkcomm.c contains the pieces of PuTTY infrastructure like timers and uxsel that are shared between multiple sessions rather than reinstantiated per session, which have been rewritten to use global variables rather than fields in 'inst' (since it's now clear to me that they'll have to apply to all the insts in existence at once). There are still some lurking assumptions of one-session-per-process, e.g. the use of gtk_main_quit when a session finishes, and the fact that the config box insists on running as a separate invocation of gtk_main so that one session's preliminary config box can't coexist with another session already active. But this should make it possible to at least write an OS X app good enough to start testing with, even if it doesn't get everything quite right yet. This change is almost entirely rearranging existing code, so it shouldn't be seriously destabilising. But two noticeable actual changes have happened, both pleasantly simplifying: Firstly, the global-variables rewrite of gtkcomm.c has allowed the post_main edifice to become a great deal simpler. Most of its complexity was about remembering what 'inst' it had to call back to, and in fact the right answer is that it shouldn't be calling back to one at all. So now the post_main() called by gtkdlg.c has become the same function as the old inst_post_main() that actually did the work, instead of the two having to be connected by a piece of ugly plumbing. Secondly, a piece of code that's vanished completely in this refactoring is the temporary blocking of SIGCHLD around most of the session setup code. This turns out to have been introduced in 2002, _before_ I switched to using the intra-process signal pipe strategy for SIGCHLD handling in 2003. So I now expect that we should be robust in any case against receiving SIGCHLD at an inconvenient moment, and hence there's no need to block it.
239 lines
7.4 KiB
C
239 lines
7.4 KiB
C
#ifndef PUTTY_UNIX_H
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#define PUTTY_UNIX_H
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#ifdef HAVE_CONFIG_H
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# include "uxconfig.h" /* Space to hide it from mkfiles.pl */
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#endif
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#include <stdio.h> /* for FILENAME_MAX */
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#include <stdint.h> /* C99 int types */
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#ifndef NO_LIBDL
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#include <dlfcn.h> /* Dynamic library loading */
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#endif /* NO_LIBDL */
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#include "charset.h"
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#ifdef OSX_GTK
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/*
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* Assorted tweaks to various parts of the GTK front end which all
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* need to be enabled when compiling on OS X. Because I might need the
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* same tweaks on other systems in future, I don't want to
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* conditionalise all of them on OSX_GTK directly, so instead, each
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* one has its own name and we enable them all centrally here if
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* OSX_GTK is defined at configure time.
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*/
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#define NOT_X_WINDOWS /* of course, all the X11 stuff should be disabled */
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#define NO_PTY_PRE_INIT /* OS X gets very huffy if we try to set[ug]id */
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#define SET_NONBLOCK_VIA_OPENPT /* work around missing fcntl functionality */
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#define OSX_META_KEY_CONFIG /* two possible Meta keys to choose from */
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/* this potential one of the Meta keys needs manual handling */
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#define META_MANUAL_MASK (GDK_MOD1_MASK)
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#define JUST_USE_GTK_CLIPBOARD_UTF8 /* low-level gdk_selection_* fails */
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#define DEFAULT_CLIPBOARD GDK_SELECTION_CLIPBOARD /* OS X has no PRIMARY */
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#endif
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struct Filename {
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char *path;
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};
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FILE *f_open(const struct Filename *, char const *, int);
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struct FontSpec {
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char *name; /* may be "" to indicate no selected font at all */
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};
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struct FontSpec *fontspec_new(const char *name);
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typedef void *Context; /* FIXME: probably needs changing */
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extern Backend pty_backend;
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#define BROKEN_PIPE_ERROR_CODE EPIPE /* used in sshshare.c */
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typedef uint32_t uint32; /* C99: uint32_t defined in stdint.h */
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#define PUTTY_UINT32_DEFINED
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/*
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* Under GTK, we send MA_CLICK _and_ MA_2CLK, or MA_CLICK _and_
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* MA_3CLK, when a button is pressed for the second or third time.
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*/
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#define MULTICLICK_ONLY_EVENT 0
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/*
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* Under GTK, there is no context help available.
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*/
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#define HELPCTX(x) P(NULL)
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#define FILTER_KEY_FILES NULL /* FIXME */
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#define FILTER_DYNLIB_FILES NULL /* FIXME */
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/*
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* Under X, selection data must not be NUL-terminated.
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*/
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#define SELECTION_NUL_TERMINATED 0
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/*
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* Under X, copying to the clipboard terminates lines with just LF.
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*/
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#define SEL_NL { 10 }
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/* Simple wraparound timer function */
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unsigned long getticks(void); /* based on gettimeofday(2) */
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#define GETTICKCOUNT getticks
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#define TICKSPERSEC 1000 /* we choose to use milliseconds */
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#define CURSORBLINK 450 /* no standard way to set this */
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#define WCHAR wchar_t
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#define BYTE unsigned char
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/*
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* Unix-specific global flag
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*
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* FLAG_STDERR_TTY indicates that standard error might be a terminal and
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* might get its configuration munged, so anything trying to output plain
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* text (i.e. with newlines in it) will need to put it back into cooked
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* mode first. Applications setting this flag should also call
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* stderr_tty_init() before messing with any terminal modes, and can call
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* premsg() before outputting text to stderr and postmsg() afterwards.
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*/
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#define FLAG_STDERR_TTY 0x1000
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/* The per-session frontend structure managed by gtkwin.c */
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struct gui_data;
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struct gui_data *new_session_window(Conf *conf, const char *geometry_string);
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/* Defined in gtkmain.c */
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void launch_duplicate_session(Conf *conf);
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void launch_new_session(void);
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void launch_saved_session(const char *str);
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/* Defined in gtkcomm.c */
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void gtkcomm_setup(void);
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/* Things pty.c needs from pterm.c */
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const char *get_x_display(void *frontend);
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int font_dimension(void *frontend, int which);/* 0 for width, 1 for height */
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long get_windowid(void *frontend);
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int frontend_is_utf8(void *frontend);
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/* Things gtkdlg.c needs from pterm.c */
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void *get_window(void *frontend); /* void * to avoid depending on gtk.h */
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void post_main(void); /* called after any subsidiary gtk_main() */
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/* Things pterm.c needs from gtkdlg.c */
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int do_config_box(const char *title, Conf *conf,
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int midsession, int protcfginfo);
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void fatal_message_box(void *window, const char *msg);
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void nonfatal_message_box(void *window, const char *msg);
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void about_box(void *window);
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void *eventlogstuff_new(void);
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void showeventlog(void *estuff, void *parentwin);
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void logevent_dlg(void *estuff, const char *string);
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int reallyclose(void *frontend);
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#ifdef MAY_REFER_TO_GTK_IN_HEADERS
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int messagebox(GtkWidget *parentwin, const char *title,
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const char *msg, int minwid, int selectable, ...);
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#endif
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/* Things pterm.c needs from {ptermm,uxputty}.c */
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char *make_default_wintitle(char *hostname);
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int process_nonoption_arg(const char *arg, Conf *conf, int *allow_launch);
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/* pterm.c needs this special function in xkeysym.c */
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int keysym_to_unicode(int keysym);
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/* Things uxstore.c needs from pterm.c */
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char *x_get_default(const char *key);
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/* Things uxstore.c provides to pterm.c */
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void provide_xrm_string(char *string);
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/* Things provided by uxcons.c */
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struct termios;
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void stderr_tty_init(void);
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void premsg(struct termios *);
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void postmsg(struct termios *);
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/* The interface used by uxsel.c */
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typedef struct uxsel_id uxsel_id;
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void uxsel_init(void);
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typedef int (*uxsel_callback_fn)(int fd, int event);
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void uxsel_set(int fd, int rwx, uxsel_callback_fn callback);
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void uxsel_del(int fd);
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int select_result(int fd, int event);
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int first_fd(int *state, int *rwx);
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int next_fd(int *state, int *rwx);
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/* The following are expected to be provided _to_ uxsel.c by the frontend */
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uxsel_id *uxsel_input_add(int fd, int rwx); /* returns an id */
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void uxsel_input_remove(uxsel_id *id);
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/* uxcfg.c */
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struct controlbox;
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void unix_setup_config_box(struct controlbox *b, int midsession, int protocol);
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/* gtkcfg.c */
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void gtk_setup_config_box(struct controlbox *b, int midsession, void *window);
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/*
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* In the Unix Unicode layer, DEFAULT_CODEPAGE is a special value
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* which causes mb_to_wc and wc_to_mb to call _libc_ rather than
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* libcharset. That way, we can interface the various charsets
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* supported by libcharset with the one supported by mbstowcs and
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* wcstombs (which will be the character set in which stuff read
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* from the command line or config files is assumed to be encoded).
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*/
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#define DEFAULT_CODEPAGE 0xFFFF
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#define CP_UTF8 CS_UTF8 /* from libcharset */
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#define strnicmp strncasecmp
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#define stricmp strcasecmp
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/* BSD-semantics version of signal(), and another helpful function */
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void (*putty_signal(int sig, void (*func)(int)))(int);
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void block_signal(int sig, int block_it);
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/* uxmisc.c */
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void cloexec(int);
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void noncloexec(int);
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int nonblock(int);
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int no_nonblock(int);
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char *make_dir_and_check_ours(const char *dirname);
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/*
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* Exports from unicode.c.
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*/
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struct unicode_data;
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int init_ucs(struct unicode_data *ucsdata, char *line_codepage,
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int utf8_override, int font_charset, int vtmode);
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/*
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* Spare function exported directly from uxnet.c.
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*/
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void *sk_getxdmdata(void *sock, int *lenp);
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/*
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* General helpful Unix stuff: more helpful version of the FD_SET
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* macro, which also handles maxfd.
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*/
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#define FD_SET_MAX(fd, max, set) do { \
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FD_SET(fd, &set); \
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if (max < fd + 1) max = fd + 1; \
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} while (0)
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/*
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* Exports from winser.c.
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*/
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extern Backend serial_backend;
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/*
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* uxpeer.c, wrapping getsockopt(SO_PEERCRED).
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*/
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int so_peercred(int fd, int *pid, int *uid, int *gid);
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/*
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* Default font setting, which can vary depending on NOT_X_WINDOWS.
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*/
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#ifdef NOT_X_WINDOWS
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#define DEFAULT_GTK_FONT "client:Monospace 12"
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#else
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#define DEFAULT_GTK_FONT "server:fixed"
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#endif
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#endif
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