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https://git.tartarus.org/simon/putty.git
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c8f83979a3
When anyone connects to a PuTTY tool's listening socket - whether it's a user of a local->remote port forwarding, a connection-sharing downstream or a client of Pageant - we'd like to log as much information as we can find out about where the connection came from. To that end, I've implemented a function sk_peer_info() in the socket abstraction, which returns a freeform text string as best it can (or NULL, if it can't get anything at all) describing the thing at the other end of the connection. For TCP connections, this is done using getpeername() to get an IP address and port in the obvious way; for Unix-domain sockets, we attempt SO_PEERCRED (conditionalised on some moderately hairy autoconfery) to get the pid and owner of the peer. I haven't implemented anything for Windows named pipes, but I will if I hear of anything useful.
195 lines
5.8 KiB
C
195 lines
5.8 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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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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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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/* Things pty.c needs from pterm.c */
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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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/* 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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/* 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, ...);
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int string_width(const char *text);
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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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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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int uxsel_input_add(int fd, int rwx); /* returns an id */
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void uxsel_input_remove(int 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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#endif
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