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1 | /* SPDX-License-Identifier: LGPL-2.1+ */ | |
2 | #pragma once | |
3 | ||
4 | /*** | |
5 | This file is part of systemd. | |
6 | ||
7 | Copyright 2010 Lennart Poettering | |
8 | ***/ | |
9 | ||
10 | #include <stdarg.h> | |
11 | #include <stdbool.h> | |
12 | #include <stdio.h> | |
13 | #include <sys/types.h> | |
14 | ||
15 | #include "macro.h" | |
16 | #include "time-util.h" | |
17 | ||
18 | /* Regular colors */ | |
19 | #define ANSI_BLACK "\x1B[0;30m" | |
20 | #define ANSI_RED "\x1B[0;31m" | |
21 | #define ANSI_GREEN "\x1B[0;32m" | |
22 | #define ANSI_YELLOW "\x1B[0;33m" | |
23 | #define ANSI_BLUE "\x1B[0;34m" | |
24 | #define ANSI_MAGENTA "\x1B[0;35m" | |
25 | #define ANSI_CYAN "\x1B[0;36m" | |
26 | #define ANSI_WHITE "\x1B[0;37m" | |
27 | ||
28 | /* Bold/highlighted */ | |
29 | #define ANSI_HIGHLIGHT_BLACK "\x1B[0;1;30m" | |
30 | #define ANSI_HIGHLIGHT_RED "\x1B[0;1;31m" | |
31 | #define ANSI_HIGHLIGHT_GREEN "\x1B[0;1;32m" | |
32 | #define ANSI_HIGHLIGHT_YELLOW "\x1B[0;1;33m" | |
33 | #define ANSI_HIGHLIGHT_BLUE "\x1B[0;1;34m" | |
34 | #define ANSI_HIGHLIGHT_MAGENTA "\x1B[0;1;35m" | |
35 | #define ANSI_HIGHLIGHT_CYAN "\x1B[0;1;36m" | |
36 | #define ANSI_HIGHLIGHT_WHITE "\x1B[0;1;37m" | |
37 | ||
38 | /* Underlined */ | |
39 | #define ANSI_HIGHLIGHT_BLACK_UNDERLINE "\x1B[0;1;4;30m" | |
40 | #define ANSI_HIGHLIGHT_RED_UNDERLINE "\x1B[0;1;4;31m" | |
41 | #define ANSI_HIGHLIGHT_GREEN_UNDERLINE "\x1B[0;1;4;32m" | |
42 | #define ANSI_HIGHLIGHT_YELLOW_UNDERLINE "\x1B[0;1;4;33m" | |
43 | #define ANSI_HIGHLIGHT_BLUE_UNDERLINE "\x1B[0;1;4;34m" | |
44 | #define ANSI_HIGHLIGHT_MAGENTA_UNDERLINE "\x1B[0;1;4;35m" | |
45 | #define ANSI_HIGHLIGHT_CYAN_UNDERLINE "\x1B[0;1;4;36m" | |
46 | #define ANSI_HIGHLIGHT_WHITE_UNDERLINE "\x1B[0;1;4;37m" | |
47 | ||
48 | /* Other ANSI codes */ | |
49 | #define ANSI_UNDERLINE "\x1B[0;4m" | |
50 | #define ANSI_HIGHLIGHT "\x1B[0;1;39m" | |
51 | #define ANSI_HIGHLIGHT_UNDERLINE "\x1B[0;1;4m" | |
52 | ||
53 | /* Reset/clear ANSI styles */ | |
54 | #define ANSI_NORMAL "\x1B[0m" | |
55 | ||
56 | /* Erase characters until the end of the line */ | |
57 | #define ANSI_ERASE_TO_END_OF_LINE "\x1B[K" | |
58 | ||
59 | /* Set cursor to top left corner and clear screen */ | |
60 | #define ANSI_HOME_CLEAR "\x1B[H\x1B[2J" | |
61 | ||
62 | int reset_terminal_fd(int fd, bool switch_to_text); | |
63 | int reset_terminal(const char *name); | |
64 | ||
65 | int open_terminal(const char *name, int mode); | |
66 | ||
67 | /* Flags for tweaking the way we become the controlling process of a terminal. */ | |
68 | typedef enum AcquireTerminalFlags { | |
69 | /* Try to become the controlling process of the TTY. If we can't return -EPERM. */ | |
70 | ACQUIRE_TERMINAL_TRY = 0, | |
71 | ||
72 | /* Tell the kernel to forcibly make us the controlling process of the TTY. Returns -EPERM if the kernel doesn't allow that. */ | |
73 | ACQUIRE_TERMINAL_FORCE = 1, | |
74 | ||
75 | /* If we can't become the controlling process of the TTY right-away, then wait until we can. */ | |
76 | ACQUIRE_TERMINAL_WAIT = 2, | |
77 | ||
78 | /* Pick one of the above, and then OR this flag in, in order to request permissive behaviour, if we can't become controlling process then don't mind */ | |
79 | ACQUIRE_TERMINAL_PERMISSIVE = 4, | |
80 | } AcquireTerminalFlags; | |
81 | ||
82 | int acquire_terminal(const char *name, AcquireTerminalFlags flags, usec_t timeout); | |
83 | int release_terminal(void); | |
84 | ||
85 | int terminal_vhangup_fd(int fd); | |
86 | int terminal_vhangup(const char *name); | |
87 | ||
88 | int chvt(int vt); | |
89 | ||
90 | int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl); | |
91 | int ask_char(char *ret, const char *replies, const char *text, ...) _printf_(3, 4); | |
92 | int ask_string(char **ret, const char *text, ...) _printf_(2, 3); | |
93 | ||
94 | int vt_disallocate(const char *name); | |
95 | ||
96 | int resolve_dev_console(char **ret); | |
97 | int get_kernel_consoles(char ***ret); | |
98 | bool tty_is_vc(const char *tty); | |
99 | bool tty_is_vc_resolve(const char *tty); | |
100 | bool tty_is_console(const char *tty) _pure_; | |
101 | int vtnr_from_tty(const char *tty); | |
102 | const char *default_term_for_tty(const char *tty); | |
103 | ||
104 | int make_console_stdio(void); | |
105 | ||
106 | int fd_columns(int fd); | |
107 | unsigned columns(void); | |
108 | int fd_lines(int fd); | |
109 | unsigned lines(void); | |
110 | ||
111 | void columns_lines_cache_reset(int _unused_ signum); | |
112 | void reset_terminal_feature_caches(void); | |
113 | ||
114 | bool on_tty(void); | |
115 | bool terminal_is_dumb(void); | |
116 | bool colors_enabled(void); | |
117 | bool underline_enabled(void); | |
118 | bool dev_console_colors_enabled(void); | |
119 | ||
120 | #define DEFINE_ANSI_FUNC(name, NAME) \ | |
121 | static inline const char *ansi_##name(void) { \ | |
122 | return colors_enabled() ? ANSI_##NAME : ""; \ | |
123 | } | |
124 | ||
125 | #define DEFINE_ANSI_FUNC_UNDERLINE(name, NAME, REPLACEMENT) \ | |
126 | static inline const char *ansi_##name(void) { \ | |
127 | return underline_enabled() ? ANSI_##NAME : \ | |
128 | colors_enabled() ? ANSI_##REPLACEMENT : ""; \ | |
129 | } | |
130 | ||
131 | DEFINE_ANSI_FUNC(highlight, HIGHLIGHT); | |
132 | DEFINE_ANSI_FUNC(highlight_red, HIGHLIGHT_RED); | |
133 | DEFINE_ANSI_FUNC(highlight_green, HIGHLIGHT_GREEN); | |
134 | DEFINE_ANSI_FUNC(highlight_yellow, HIGHLIGHT_YELLOW); | |
135 | DEFINE_ANSI_FUNC(highlight_blue, HIGHLIGHT_BLUE); | |
136 | DEFINE_ANSI_FUNC(normal, NORMAL); | |
137 | ||
138 | DEFINE_ANSI_FUNC_UNDERLINE(underline, UNDERLINE, NORMAL); | |
139 | DEFINE_ANSI_FUNC_UNDERLINE(highlight_underline, HIGHLIGHT_UNDERLINE, HIGHLIGHT); | |
140 | DEFINE_ANSI_FUNC_UNDERLINE(highlight_red_underline, HIGHLIGHT_RED_UNDERLINE, HIGHLIGHT_RED); | |
141 | DEFINE_ANSI_FUNC_UNDERLINE(highlight_green_underline, HIGHLIGHT_GREEN_UNDERLINE, HIGHLIGHT_GREEN); | |
142 | DEFINE_ANSI_FUNC_UNDERLINE(highlight_yellow_underline, HIGHLIGHT_YELLOW_UNDERLINE, HIGHLIGHT_YELLOW); | |
143 | DEFINE_ANSI_FUNC_UNDERLINE(highlight_blue_underline, HIGHLIGHT_BLUE_UNDERLINE, HIGHLIGHT_BLUE); | |
144 | ||
145 | int get_ctty_devnr(pid_t pid, dev_t *d); | |
146 | int get_ctty(pid_t, dev_t *_devnr, char **r); | |
147 | ||
148 | int getttyname_malloc(int fd, char **r); | |
149 | int getttyname_harder(int fd, char **r); | |
150 | ||
151 | int ptsname_malloc(int fd, char **ret); | |
152 | int ptsname_namespace(int pty, char **ret); | |
153 | ||
154 | int openpt_in_namespace(pid_t pid, int flags); | |
155 | int open_terminal_in_namespace(pid_t pid, const char *name, int mode); | |
156 | ||
157 | int vt_default_utf8(void); | |
158 | int vt_reset_keyboard(int fd); |