e16166a74c
Adds a pre-commit hook for detecting and replacing occurrences of `g_malloc()` and `wmem_alloc()` with `g_new()` and `wmem_new()`, to improve the readability of Wireshark's code, and occurrences of `g_malloc(sizeof(struct myobj) * foo)` with `g_new(struct myobj, foo)` to prevent integer overflows Also fixes all existing occurrences across the codebase.
874 lines
25 KiB
C
874 lines
25 KiB
C
/* print_stream.c
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* Routines for print streams.
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*
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* Gilbert Ramirez <gram@alumni.rice.edu>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <stdio.h>
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#include <string.h>
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#ifdef _WIN32
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#include <windows.h>
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#ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
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#define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x0004
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#endif /* ENABLE_VIRTUAL_TERMINAL_PROCESSING */
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#else
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#include <stdlib.h> /* for getenv() */
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#include <unistd.h> /* for isatty() */
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#endif
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#include <glib.h>
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#include <epan/print_stream.h>
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#include <epan/ps.h>
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#include <wsutil/file_util.h>
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#define TERM_SGR_RESET "\x1B[0m" /* SGR - reset */
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#define TERM_CSI_EL "\x1B[K" /* EL - Erase in Line (to end of line) */
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typedef enum {
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COLOR_NONE,
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#ifdef _WIN32
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COLOR_CONSOLE,
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#endif
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COLOR_24BIT_ESCAPE
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} color_type_t;
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typedef struct {
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gboolean to_file;
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FILE *fh;
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gboolean isatty;
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const char *to_codeset;
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color_type_t color_type;
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#ifdef _WIN32
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WORD csb_attrs;
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DWORD console_mode;
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#endif
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} output_text;
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#ifdef _WIN32
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/*
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* The classic Windows Console offers 1-bit color, so you can't set
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* the red, green, or blue intensities, you can only set
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* "{foreground, background} contains {red, green, blue}". So
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* include red, green or blue if the numeric intensity is high
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* enough.
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*/
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static void
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set_color_console(FILE *fh, const color_t *fg, const color_t *bg)
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{
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/* default to white foreground, black background */
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WORD win_fg_color = FOREGROUND_RED|FOREGROUND_BLUE|FOREGROUND_GREEN;
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WORD win_bg_color = 0;
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if (fg) {
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if (((fg->red >> 8) & 0xff) >= 0x80)
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{
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win_fg_color |= FOREGROUND_RED;
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}
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else
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{
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win_fg_color &= (~FOREGROUND_RED);
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}
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if (((fg->green >> 8) & 0xff) >= 0x80)
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{
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win_fg_color |= FOREGROUND_GREEN;
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}
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else
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{
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win_fg_color &= (~FOREGROUND_GREEN);
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}
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if (((fg->blue >> 8) & 0xff) >= 0x80)
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{
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win_fg_color |= FOREGROUND_BLUE;
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}
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else
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{
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win_fg_color &= (~FOREGROUND_BLUE);
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}
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}
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if (bg) {
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if (((bg->red >> 8) & 0xff) >= 0x80)
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{
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win_bg_color |= BACKGROUND_RED;
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}
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else
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{
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win_bg_color &= (~BACKGROUND_RED);
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}
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if (((bg->green >> 8) & 0xff) >= 0x80)
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{
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win_bg_color |= BACKGROUND_GREEN;
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}
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else
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{
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win_bg_color &= (~BACKGROUND_GREEN);
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}
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if (((bg->blue >> 8) & 0xff) >= 0x80)
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{
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win_bg_color |= BACKGROUND_BLUE;
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}
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else
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{
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win_bg_color &= (~BACKGROUND_BLUE);
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}
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}
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SetConsoleTextAttribute((HANDLE)_get_osfhandle(_fileno(fh)), win_fg_color|win_bg_color);
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}
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#endif
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/*
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* Use the SGR escape sequences to specify a 24-bit color.
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*/
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static void
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set_color_24bit_escape(FILE *fh, const color_t *fg, const color_t *bg)
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{
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/*
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* Use the "select character foreground colour" and "select character
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* background colour" options to the Select Graphic Rendition control
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* sequence; those are reserved in ECMA-48, and are specified in ISO
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* standard 8613-6/ITU-T Recommendation T.416, "Open Document Architecture
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* (ODA) and Interchange Format: Chararcter Content Architectures",
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* section 13.1.8 "Select Graphic Rendition (SGR)". We use the
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* "direct colour in RGB space" option, with a parameter value of 2.
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*
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* Those sequences are supported by some UN*X terminal emulators; some
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* support either : or ; as a separator, others require a ;.
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*
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* For more than you ever wanted to know about all of this, see
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*
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* https://github.com/termstandard/colors
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*
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* and
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*
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* https://gist.github.com/XVilka/8346728
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*
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* including the discussion following it, and
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*
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* https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
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*
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* They are also supported by versions of the Windows Console that
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* allow setting the ENABLE_VIRTUAL_TERMINAL_PROCESSING mode; that
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* mode tells the console to interpret escape sequences written
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* to it.
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*/
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if (fg) {
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fprintf(fh, "\x1B[38;2;%u;%u;%um",
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(fg->red >> 8) & 0xff,
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(fg->green >> 8) & 0xff,
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(fg->blue >> 8) & 0xff);
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}
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if (bg) {
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fprintf(fh, "\x1B[48;2;%u;%u;%um",
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(bg->red >> 8) & 0xff,
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(bg->green >> 8) & 0xff,
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(bg->blue >> 8) & 0xff);
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}
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}
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#ifdef _WIN32
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static void
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do_color_eol_console(print_stream_t *self)
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{
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output_text *output = (output_text *)self->data;
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FILE *fh = output->fh;
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SetConsoleTextAttribute((HANDLE)_get_osfhandle(_fileno(fh)), output->csb_attrs);
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fprintf(fh, "\n");
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}
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#endif
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static void
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do_color_eol_24bit_escape(print_stream_t *self)
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{
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output_text *output = (output_text *)self->data;
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FILE *fh = output->fh;
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/*
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* Emit CSI EL to extend current background color all the way to EOL,
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* otherwise we get a ragged right edge of color wherever the newline
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* occurs. It's not perfect in every terminal emulator, but it generally
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* works.
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*/
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fprintf(fh, "%s\n%s", TERM_CSI_EL, TERM_SGR_RESET);
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}
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static FILE *
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open_print_dest(gboolean to_file, const char *dest)
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{
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FILE *fh;
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/* Open the file or command for output */
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if (to_file)
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fh = ws_fopen(dest, "w");
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else
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fh = popen(dest, "w");
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return fh;
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}
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static gboolean
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close_print_dest(gboolean to_file, FILE *fh)
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{
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/* Close the file or command */
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if (to_file)
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return (fclose(fh) == 0);
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else
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return (pclose(fh) == 0);
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}
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/* Some formats need stuff at the beginning of the output */
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gboolean
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print_preamble(print_stream_t *self, gchar *filename, const char *version_string)
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{
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return self->ops->print_preamble ? (self->ops->print_preamble)(self, filename, version_string) : TRUE;
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}
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gboolean
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print_line(print_stream_t *self, int indent, const char *line)
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{
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return (self->ops->print_line)(self, indent, line);
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}
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gboolean
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print_line_color(print_stream_t *self, int indent, const char *line, const color_t *fg, const color_t *bg)
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{
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if (self->ops->print_line_color)
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return (self->ops->print_line_color)(self, indent, line, fg, bg);
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else
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return (self->ops->print_line)(self, indent, line);
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}
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/* Insert bookmark */
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gboolean
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print_bookmark(print_stream_t *self, const gchar *name, const gchar *title)
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{
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return self->ops->print_bookmark ? (self->ops->print_bookmark)(self, name, title) : TRUE;
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}
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gboolean
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new_page(print_stream_t *self)
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{
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return self->ops->new_page ? (self->ops->new_page)(self) : TRUE;
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}
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/* Some formats need stuff at the end of the output */
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gboolean
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print_finale(print_stream_t *self)
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{
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return self->ops->print_finale ? (self->ops->print_finale)(self) : TRUE;
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}
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gboolean
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destroy_print_stream(print_stream_t *self)
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{
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return (self && self->ops && self->ops->destroy) ? (self->ops->destroy)(self) : TRUE;
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}
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#define MAX_INDENT 160
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/* returns TRUE if the print succeeded, FALSE if there was an error */
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static gboolean
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print_line_color_text(print_stream_t *self, int indent, const char *line, const color_t *fg, const color_t *bg)
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{
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static char spaces[MAX_INDENT];
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size_t ret;
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output_text *output = (output_text *)self->data;
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unsigned int num_spaces;
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gboolean emit_color = output->isatty && (fg != NULL || bg != NULL);
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/* should be space, if NUL -> initialize */
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if (!spaces[0])
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memset(spaces, ' ', sizeof(spaces));
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if (emit_color) {
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switch (output->color_type) {
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case COLOR_NONE:
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break;
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#ifdef _WIN32
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case COLOR_CONSOLE:
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set_color_console(output->fh, fg, bg);
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break;
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#endif
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case COLOR_24BIT_ESCAPE:
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set_color_24bit_escape(output->fh, fg, bg);
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if (ferror(output->fh))
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return FALSE;
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break;
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}
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}
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/* Prepare the tabs for printing, depending on tree level */
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num_spaces = indent * 4;
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if (num_spaces > MAX_INDENT)
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num_spaces = MAX_INDENT;
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ret = fwrite(spaces, 1, num_spaces, output->fh);
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if (ret == num_spaces) {
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if (output->isatty && output->to_codeset) {
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/* XXX Allocating a fresh buffer every line probably isn't the
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* most efficient way to do this. However, this has the side
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* effect of scrubbing invalid output.
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*/
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gchar *tty_out;
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tty_out = g_convert_with_fallback(line, -1, output->to_codeset, "UTF-8", "?", NULL, NULL, NULL);
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if (tty_out) {
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#ifdef _WIN32
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/*
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* We mapped to little-endian UTF-16, so write to the
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* console using the Unicode API.
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*/
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DWORD out_len = (DWORD) wcslen((wchar_t *) tty_out);
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WriteConsoleW((HANDLE)_get_osfhandle(_fileno(output->fh)), tty_out, out_len, &out_len, NULL);
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#else
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fputs(tty_out, output->fh);
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#endif
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g_free(tty_out);
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} else {
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fputs(line, output->fh);
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}
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} else {
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/*
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* Either we're not writing to a terminal/console or we are
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* but we're just writing UTF-8 there.
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*/
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fputs(line, output->fh);
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}
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if (emit_color) {
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switch (output->color_type) {
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case COLOR_NONE:
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putc('\n', output->fh);
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break;
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#ifdef _WIN32
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case COLOR_CONSOLE:
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do_color_eol_console(self);
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break;
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#endif
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case COLOR_24BIT_ESCAPE:
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do_color_eol_24bit_escape(self);
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break;
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}
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} else
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putc('\n', output->fh);
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}
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return !ferror(output->fh);
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}
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static gboolean
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print_line_text(print_stream_t *self, int indent, const char *line)
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{
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return print_line_color_text(self, indent, line, NULL, NULL);
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}
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static gboolean
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new_page_text(print_stream_t *self)
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{
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output_text *output = (output_text *)self->data;
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fputs("\f", output->fh);
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return !ferror(output->fh);
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}
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static gboolean
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destroy_text(print_stream_t *self)
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{
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output_text *output = (output_text *)self->data;
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gboolean ret;
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switch (output->color_type) {
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case COLOR_NONE:
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break;
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#ifdef _WIN32
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case COLOR_CONSOLE:
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/* Restore the default text attribute. */
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SetConsoleTextAttribute((HANDLE)_get_osfhandle(_fileno(output->fh)), output->csb_attrs);
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break;
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#endif
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case COLOR_24BIT_ESCAPE:
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/* Reset the color to the default */
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fprintf(output->fh, "%s", TERM_SGR_RESET);
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fflush(output->fh);
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#ifdef _WIN32
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/*
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* Restore the console mode before we changed it.
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* We must do that *after* sending escape sequences,
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* as this may disable escape sequence processing.
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*/
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SetConsoleMode((HANDLE)_get_osfhandle(_fileno(output->fh)), output->console_mode);
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#endif
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break;
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}
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ret = close_print_dest(output->to_file, output->fh);
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g_free(output);
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g_free(self);
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return ret;
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}
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static const print_stream_ops_t print_text_ops = {
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NULL, /* preamble */
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print_line_text,
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NULL, /* bookmark */
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new_page_text,
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NULL, /* finale */
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destroy_text,
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print_line_color_text,
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};
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static print_stream_t *
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print_stream_text_alloc(gboolean to_file, FILE *fh)
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{
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print_stream_t *stream;
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output_text *output;
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output = (output_text *)g_malloc(sizeof *output);
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output->to_file = to_file;
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output->fh = fh;
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#ifdef _WIN32
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/*
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* On Windows, "_isatty()", which is what ws_isatty() wraps,
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* "determines whether fd is associated with a character device
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* (a terminal, console, printer, or serial port)".
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*
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* We specifically want to know if it's assciated with a *console*,
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* as, if it is, we'll be using console-specific APIs.
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*/
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CONSOLE_SCREEN_BUFFER_INFO csb_info;
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DWORD console_mode;
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if (GetConsoleScreenBufferInfo((HANDLE)_get_osfhandle(_fileno(fh)),
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&csb_info)) {
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/*
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* The console-specific API GetConsoleScreenBufferInfo() succeeded,
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* so we'll assume this is a console.
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*/
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output->isatty = TRUE;
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output->csb_attrs = csb_info.wAttributes;
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/*
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* Map to little-endian UTF-16; we'll be doing Unicode-API
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* writes to the console, and that expects the standard flavor
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* of Unicode on Windows, which is little-endian UTF-16.
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*/
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output->to_codeset = "UTF-16LE";
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/*
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* As indicated above, the classic Windows Console only offers
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* 1-bit color, set through special console APIs.
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*
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* The console in Windows 10 version 1511 (TH2), build 10586, and
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* later supports SGR escape sequences:
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*
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* http://www.nivot.org/blog/post/2016/02/04/Windows-10-TH2-(v1511)-Console-Host-Enhancements
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*
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* but only supports 16 colors. The "undocumented" 0x04 bit to
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* which they refer is documented in the current version of the
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* SetConsoleMode() documentation:
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*
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* https://docs.microsoft.com/en-us/windows/console/setconsolemode
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*
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* as ENABLE_VIRTUAL_TERMINAL_PROCESSING, saying
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*
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* When writing with WriteFile or WriteConsole, characters are
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* parsed for VT100 and similar control character sequences that
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* control cursor movement, color/font mode, and other operations
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* that can also be performed via the existing Console APIs. For
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* more information, see Console Virtual Terminal Sequences.
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*
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* Console Virtual Terminal Sequences:
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*
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* https://docs.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences
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*
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* documents all the escape sequences the Console supports. It
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* currently seems to indicate that the ODA versions with 24-bit
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* color are supported but select the closest color from the
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* 16-color palette.
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*
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* The console in Windows 10 builds 14931 (a preview version of
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* Windows 10 version 1703) and later supports SGR RGB sequences:
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*
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* https://devblogs.microsoft.com/commandline/24-bit-color-in-the-windows-console/
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*
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* That page says:
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*
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* Thanks to our ability to run Linux apps and scripts using our
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* new Bash on Ubuntu on Windows environment atop the Windows
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* Subsystem for Linux (WSL), we can use some Linux scripts and
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* tools to demonstrate the Console's new 24-bit color support:
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*
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* which suggests that, with that version, whatever escape sequences
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* work on UN*Xes also work on Windows, so maybe they support full
|
|
* 24-bit color with the ODA sequences.
|
|
*
|
|
* So, if ENABLE_VIRTUAL_TERMINAL_PROCESSING is already set on
|
|
* the console, or if it isn't but we can set it, we use the SGR
|
|
* sequences to set colors, otherwise, we just use the
|
|
* SetConsoleTextAttribute calls.
|
|
*/
|
|
GetConsoleMode((HANDLE)_get_osfhandle(_fileno(fh)), &output->console_mode);
|
|
if (output->console_mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING) {
|
|
/*
|
|
* It's already enabled; assume that means we can use the
|
|
* 24-bit color escape sequences (although the console might
|
|
* not support full 24-bit color, and would map the 24-bit
|
|
* color to the closest color in a smaller palette).
|
|
*/
|
|
output->color_type = COLOR_24BIT_ESCAPE;
|
|
} else {
|
|
/*
|
|
* See if we can enable it.
|
|
*/
|
|
console_mode = output->console_mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING;
|
|
if (!SetConsoleMode((HANDLE)_get_osfhandle(_fileno(fh)), console_mode)) {
|
|
/*
|
|
* We can't - use console-mode color.
|
|
*
|
|
* It's not documented which error is returned if
|
|
* you try to set a mode bit that's not supported,
|
|
* but, at least on Windows 7, ERROR_INVALID_PARAMETER
|
|
* is returned if you try to set
|
|
* ENABLE_VIRTUAL_TERMINAL_PROCESSING.
|
|
*
|
|
* We could check for that error and report other
|
|
* errors as failures.
|
|
*/
|
|
output->color_type = COLOR_CONSOLE;
|
|
} else {
|
|
/* We can - use 24-bit color */
|
|
output->color_type = COLOR_24BIT_ESCAPE;
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* GetConsoleScreenBufferInfo() failed; it's not documented
|
|
* whether a particular error means "not a console", so we'll
|
|
* just assume this means it's not a console.
|
|
*
|
|
* The error we see on Windows 7 is ERROR_INVALID_HANDLE, but
|
|
* "invalid" is vague enough that I'm not sure we should
|
|
* treat that as meaning "not a console and everything else
|
|
* as being an error that we should report.
|
|
*/
|
|
output->isatty = FALSE;
|
|
|
|
/*
|
|
* This is not used if we're not on a console, as we're not doing
|
|
* coloring.
|
|
*/
|
|
output->csb_attrs = 0;
|
|
}
|
|
#else
|
|
/*
|
|
* On UN*X, isatty() tests "whether fildes, an open file descriptor,
|
|
* is associated with a terminal device", to quote the Single UNIX
|
|
* Specification, and the documentation for UN*Xes that haven't
|
|
* been tested against the SUS validation suite say similar things.
|
|
* It does *not* just test whether it's associated with a character
|
|
* device that may or may not be a terminal device, so it's what we
|
|
* want on UN*X.
|
|
*/
|
|
output->isatty = isatty(ws_fileno(fh));
|
|
if (output->isatty) {
|
|
const gchar *charset;
|
|
gboolean is_utf8;
|
|
|
|
/* Is there a more reliable way to do this? */
|
|
is_utf8 = g_get_charset(&charset);
|
|
if (!is_utf8) {
|
|
/*
|
|
* The local character set isn't UTF-8, so arrange to
|
|
* map from UTF-8 to that character set before printing
|
|
* on the terminal.
|
|
*/
|
|
output->to_codeset = charset;
|
|
} else {
|
|
/*
|
|
* The local character set is UTF-8, so no mapping is
|
|
* necessary.
|
|
*/
|
|
output->to_codeset = NULL;
|
|
}
|
|
|
|
/*
|
|
* Not all UN*X terminal emulators support the 24-bit color SGR
|
|
* sequences (for example, macOS Terminal currently doesn't).
|
|
*
|
|
* As per
|
|
*
|
|
* https://github.com/termstandard/colors
|
|
*
|
|
* terminfo currently doesn't have a flag to indicate 24-bit
|
|
* color support - a future release will - so we can't use
|
|
* that to determine if the terminal emulator (or terminal)
|
|
* supports it.
|
|
*
|
|
* That page notes that some terminal emulators set the
|
|
* COLORTERM environment variable either to "truecolor"
|
|
* or "24bit" if 24-bit color is supported; we use that
|
|
* test for now.
|
|
*
|
|
* XXX - if there are terminal emulators that use the 24-bit
|
|
* color escape sequences but don't set COLORTERM, add code
|
|
* here to look at other environment variables to try to
|
|
* recognize them.
|
|
*
|
|
* XXX - fall back on 8-color or 256-color support if we can
|
|
* somehow determine that 24-bit color support isn't available
|
|
* but 8-color or 256-color support is?
|
|
*/
|
|
char *colorterm = getenv("COLORTERM");
|
|
if (colorterm != NULL &&
|
|
(strcmp(colorterm, "truecolor") == 0 || strcmp(colorterm, "24bit") == 0))
|
|
output->color_type = COLOR_24BIT_ESCAPE;
|
|
else
|
|
output->color_type = COLOR_NONE;
|
|
}
|
|
#endif
|
|
if (!output->isatty) {
|
|
/*
|
|
* OK, this was determined *not* to be a terminal, so we won't
|
|
* be doing coloring or mapping from UTF-8 to a local character
|
|
* set.
|
|
*/
|
|
output->to_codeset = NULL;
|
|
output->color_type = COLOR_NONE;
|
|
}
|
|
|
|
stream = g_new(print_stream_t, 1);
|
|
stream->ops = &print_text_ops;
|
|
stream->data = output;
|
|
|
|
return stream;
|
|
}
|
|
|
|
print_stream_t *
|
|
print_stream_text_new(gboolean to_file, const char *dest)
|
|
{
|
|
FILE *fh;
|
|
|
|
fh = open_print_dest(to_file, dest);
|
|
if (fh == NULL)
|
|
return NULL;
|
|
|
|
return print_stream_text_alloc(to_file, fh);
|
|
}
|
|
|
|
print_stream_t *
|
|
print_stream_text_stdio_new(FILE *fh)
|
|
{
|
|
return print_stream_text_alloc(TRUE, fh);
|
|
}
|
|
|
|
typedef struct {
|
|
gboolean to_file;
|
|
FILE *fh;
|
|
} output_ps;
|
|
|
|
#define MAX_PS_LINE_LENGTH 256
|
|
|
|
static
|
|
void ps_clean_string(char *out, const char *in, int outbuf_size)
|
|
{
|
|
int rd, wr;
|
|
char c;
|
|
|
|
if (in == NULL) {
|
|
out[0] = '\0';
|
|
return;
|
|
}
|
|
|
|
for (rd = 0, wr = 0 ; wr < outbuf_size; rd++, wr++ ) {
|
|
c = in[rd];
|
|
switch (c) {
|
|
case '(':
|
|
case ')':
|
|
case '\\':
|
|
out[wr] = '\\';
|
|
out[++wr] = c;
|
|
break;
|
|
|
|
default:
|
|
out[wr] = c;
|
|
break;
|
|
}
|
|
|
|
if (c == 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
print_preamble_ps(print_stream_t *self, gchar *filename, const char *version_string)
|
|
{
|
|
output_ps *output = (output_ps *)self->data;
|
|
char psbuffer[MAX_PS_LINE_LENGTH]; /* static sized buffer! */
|
|
|
|
print_ps_preamble(output->fh);
|
|
|
|
fputs("%% the page title\n", output->fh);
|
|
ps_clean_string(psbuffer, filename, MAX_PS_LINE_LENGTH);
|
|
fprintf(output->fh, "/ws_pagetitle (%s - Wireshark %s) def\n", psbuffer, version_string);
|
|
fputs("\n", output->fh);
|
|
return !ferror(output->fh);
|
|
}
|
|
|
|
static gboolean
|
|
print_line_ps(print_stream_t *self, int indent, const char *line)
|
|
{
|
|
output_ps *output = (output_ps *)self->data;
|
|
char psbuffer[MAX_PS_LINE_LENGTH]; /* static sized buffer! */
|
|
|
|
ps_clean_string(psbuffer, line, MAX_PS_LINE_LENGTH);
|
|
fprintf(output->fh, "%d (%s) putline\n", indent, psbuffer);
|
|
return !ferror(output->fh);
|
|
}
|
|
|
|
static gboolean
|
|
print_bookmark_ps(print_stream_t *self, const gchar *name, const gchar *title)
|
|
{
|
|
output_ps *output = (output_ps *)self->data;
|
|
char psbuffer[MAX_PS_LINE_LENGTH]; /* static sized buffer! */
|
|
|
|
/*
|
|
* See the Adobe "pdfmark reference":
|
|
*
|
|
* http://partners.adobe.com/asn/acrobat/docs/pdfmark.pdf
|
|
*
|
|
* The pdfmark stuff tells code that turns PostScript into PDF
|
|
* things that it should do.
|
|
*
|
|
* The /OUT stuff creates a bookmark that goes to the
|
|
* destination with "name" as the name and "title" as the title.
|
|
*
|
|
* The "/DEST" creates the destination.
|
|
*/
|
|
ps_clean_string(psbuffer, title, MAX_PS_LINE_LENGTH);
|
|
fprintf(output->fh, "[/Dest /%s /Title (%s) /OUT pdfmark\n", name,
|
|
psbuffer);
|
|
fputs("[/View [/XYZ -4 currentpoint matrix currentmatrix matrix defaultmatrix\n",
|
|
output->fh);
|
|
fputs("matrix invertmatrix matrix concatmatrix transform exch pop 20 add null]\n",
|
|
output->fh);
|
|
fprintf(output->fh, "/Dest /%s /DEST pdfmark\n", name);
|
|
return !ferror(output->fh);
|
|
}
|
|
|
|
static gboolean
|
|
new_page_ps(print_stream_t *self)
|
|
{
|
|
output_ps *output = (output_ps *)self->data;
|
|
|
|
fputs("formfeed\n", output->fh);
|
|
return !ferror(output->fh);
|
|
}
|
|
|
|
static gboolean
|
|
print_finale_ps(print_stream_t *self)
|
|
{
|
|
output_ps *output = (output_ps *)self->data;
|
|
|
|
print_ps_finale(output->fh);
|
|
return !ferror(output->fh);
|
|
}
|
|
|
|
static gboolean
|
|
destroy_ps(print_stream_t *self)
|
|
{
|
|
output_ps *output = (output_ps *)self->data;
|
|
gboolean ret;
|
|
|
|
ret = close_print_dest(output->to_file, output->fh);
|
|
g_free(output);
|
|
g_free(self);
|
|
return ret;
|
|
}
|
|
|
|
static const print_stream_ops_t print_ps_ops = {
|
|
print_preamble_ps,
|
|
print_line_ps,
|
|
print_bookmark_ps,
|
|
new_page_ps,
|
|
print_finale_ps,
|
|
destroy_ps,
|
|
NULL, /* print_line_color */
|
|
};
|
|
|
|
static print_stream_t *
|
|
print_stream_ps_alloc(gboolean to_file, FILE *fh)
|
|
{
|
|
print_stream_t *stream;
|
|
output_ps *output;
|
|
|
|
output = (output_ps *)g_malloc(sizeof *output);
|
|
output->to_file = to_file;
|
|
output->fh = fh;
|
|
|
|
stream = g_new(print_stream_t, 1);
|
|
stream->ops = &print_ps_ops;
|
|
stream->data = output;
|
|
|
|
return stream;
|
|
}
|
|
|
|
print_stream_t *
|
|
print_stream_ps_new(gboolean to_file, const char *dest)
|
|
{
|
|
FILE *fh;
|
|
|
|
fh = open_print_dest(to_file, dest);
|
|
if (fh == NULL)
|
|
return NULL;
|
|
|
|
return print_stream_ps_alloc(to_file, fh);
|
|
}
|
|
|
|
print_stream_t *
|
|
print_stream_ps_stdio_new(FILE *fh)
|
|
{
|
|
return print_stream_ps_alloc(TRUE, fh);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|