rev |
line source |
pascal@5684
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1 --- busybox-1.16.1/include/applets.h
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pascal@5684
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2 +++ busybox-1.16.1/include/applets.h
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pascal@5711
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3 @@ -105,6 +105,7 @@
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pascal@5711
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4 IF_CLEAR(APPLET(clear, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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pascal@5711
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5 IF_CMP(APPLET(cmp, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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pascal@5711
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6 IF_COMM(APPLET(comm, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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pascal@5711
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7 +IF_VCSA2TXT(APPLET(conspy, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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pascal@5711
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8 IF_CP(APPLET_NOEXEC(cp, cp, _BB_DIR_BIN, _BB_SUID_DROP, cp))
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pascal@5711
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9 IF_CPIO(APPLET(cpio, _BB_DIR_BIN, _BB_SUID_DROP))
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pascal@5711
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10 IF_CROND(APPLET(crond, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
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pascal@5711
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11 @@ -420,6 +421,7 @@
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pascal@5684
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12 IF_UUDECODE(APPLET(uudecode, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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pascal@5684
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13 IF_UUENCODE(APPLET(uuencode, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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pascal@5684
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14 IF_VCONFIG(APPLET(vconfig, _BB_DIR_SBIN, _BB_SUID_DROP))
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pascal@5684
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15 +IF_VCSA2TXT(APPLET(vcsa2txt, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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pascal@5684
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16 IF_VI(APPLET(vi, _BB_DIR_BIN, _BB_SUID_DROP))
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pascal@5684
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17 IF_VLOCK(APPLET(vlock, _BB_DIR_USR_BIN, _BB_SUID_REQUIRE))
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pascal@5684
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18 IF_VOLNAME(APPLET(volname, _BB_DIR_USR_BIN, _BB_SUID_DROP))
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pascal@5684
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19
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pascal@5684
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20 --- busybox-1.16.1/include/usage.h
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pascal@5684
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21 +++ busybox-1.16.1/include/usage.h
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pascal@5711
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22 @@ -440,6 +440,23 @@
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pascal@5711
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23 "\n -1 Close stdout" \
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pascal@5711
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24 "\n -2 Close stderr" \
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pascal@5711
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25
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pascal@5711
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26 +#define conspy_trivial_usage \
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pascal@5711
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27 + "[-vcsnd] [-x rows] [-y lines] [virtual_console]"
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pascal@5711
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28 +#define conspy_full_usage "\n\n" \
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pascal@5711
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29 + "A text-mode VNC like program for Linux virtual terminals.\n" \
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pascal@5711
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30 + "\nTo exit, quickly press escape 3 times.\n" \
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pascal@5711
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31 + "\nvirtual_console:\n" \
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pascal@5711
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32 + " omitted Track the current console.\n" \
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pascal@5711
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33 + " 1..63 Virtual console N.\n" \
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pascal@5711
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34 + "\nOptions:" \
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pascal@5711
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35 + "\n -v Don't send keystrokes to the console." \
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pascal@5711
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36 + "\n -c May create device in /dev." \
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pascal@5711
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37 + "\n -s Open a SHELL session." \
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pascal@5711
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38 + "\n -n No colors. Black & white only." \
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pascal@5711
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39 + "\n -d Dump console to stdout."\
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pascal@5711
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40 + "\n -x r Skip the r first rows."\
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pascal@5711
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41 + "\n -y l Skip the l first lines."\
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pascal@5711
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42 +
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pascal@5711
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43 #define setuidgid_trivial_usage \
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pascal@5711
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44 "USER PROG ARGS"
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pascal@5711
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45 #define setuidgid_full_usage "\n\n" \
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pascal@5711
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46 @@ -5011,6 +5028,13 @@
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pascal@5684
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47 "\n set_ingress_map [vlan-name] [skb_priority] [vlan_qos]" \
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pascal@5684
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48 "\n set_name_type [name-type]" \
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pascal@5684
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49
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pascal@5684
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50 +#define vcsa2txt_trivial_usage \
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pascal@5684
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51 + "stdin"
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pascal@5684
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52 +#define vcsa2txt_full_usage \
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pascal@5711
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53 + " Filter /dev/vcsa* to ansi escape sequences"
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pascal@5684
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54 +#define vcsa2txt_example_usage \
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pascal@5684
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55 + "# vcsa2txt < /dev/vcsa1\n"
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pascal@5684
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56 +
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pascal@5684
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57 #define vi_trivial_usage \
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pascal@5684
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58 "[OPTIONS] [FILE]..."
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pascal@5684
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59 #define vi_full_usage "\n\n" \
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pascal@5684
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60
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pascal@5684
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61 --- busybox-1.16.1/miscutils/Config.in
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pascal@5684
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62 +++ busybox-1.16.1/miscutils/Config.in
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pascal@5684
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63 @@ -625,6 +625,12 @@
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pascal@5684
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64 help
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pascal@5684
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65 Write a message to all users that are logged in.
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pascal@5684
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66
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pascal@5684
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67 +config VCSA2TXT
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pascal@5711
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68 + bool "vcsa2txt/conspy"
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pascal@5684
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69 + default n
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pascal@5684
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70 + help
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pascal@5684
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71 + Filter /dev/vcsa* output to ansi escape sequences.
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pascal@5684
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72 +
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pascal@5684
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73 config WATCHDOG
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pascal@5684
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74 bool "watchdog"
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pascal@5684
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75 default n
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pascal@5684
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76
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pascal@5684
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77 --- busybox-1.16.1/util-linux/Kbuild
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pascal@5684
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78 +++ busybox-1.16.1/util-linux/Kbuild
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pascal@5684
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79 @@ -43,3 +43,4 @@
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pascal@5684
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80 lib-$(CONFIG_SWITCH_ROOT) += switch_root.o
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pascal@5684
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81 lib-$(CONFIG_MKFS_EXT2) += tune2fs.o
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pascal@5684
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82 lib-$(CONFIG_UMOUNT) += umount.o
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pascal@5684
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83 +lib-$(CONFIG_VCSA2TXT) += vcsa2txt.o
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pascal@5684
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84
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pascal@5684
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85 --- busybox-1.16.1/util-linux/vcsa2txt.c
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pascal@5684
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86 +++ busybox-1.16.1/util-linux/vcsa2txt.c
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pascal@5711
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87 @@ -0,0 +1,489 @@
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pascal@5684
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88 +/* vi: set sw=4 ts=4: */
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pascal@5684
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89 +/*
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pascal@5711
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90 + * A text-mode VNC like program for Linux virtual terminals.
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pascal@5684
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91 + *
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pascal@5684
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92 + * pascal.bellard@ads-lu.com
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pascal@5684
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93 + *
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pascal@5711
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94 + * Based on Russell Stuart's conspy.c
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pascal@5711
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95 + * http://ace-host.stuart.id.au/russell/files/conspy.c
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pascal@5711
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96 + *
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pascal@5684
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97 + * Licensed under GPLv2 or later, see file License in this tarball for details.
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pascal@5711
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98 + *
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pascal@5711
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99 + * example : conspy num shared access to console num
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pascal@5711
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100 + * or conspy -d num screenshot of console num
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pascal@5711
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101 + * or conspy -cs num poor man's GNU screen like
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pascal@5684
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102 + */
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pascal@5711
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103 +
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pascal@5711
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104 +//applet:IF_CONSPY(APPLET(conspy, _BB_DIR_BIN, _BB_SUID_DROP))
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pascal@5711
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105 +
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pascal@5711
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106 +//kbuild:lib-$(CONFIG_CONSPY) += conspy.o
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pascal@5711
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107 +
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pascal@5711
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108 +//config:config CONSPY
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pascal@5711
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109 +//config: bool "conspy"
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pascal@5711
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110 +//config: default n
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pascal@5711
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111 +//config: help
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pascal@5711
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112 +//config: A text-mode VNC like program for Linux virtual terminals.
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pascal@5711
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113 +//config: example : conspy num shared access to console num
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pascal@5711
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114 +//config: or conspy -d num screenshot of console num
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pascal@5711
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115 +//config: or conspy -cs num poor man's GNU screen like
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pascal@5711
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116 +
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pascal@5711
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117 +//usage:#define conspy_trivial_usage
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pascal@5711
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118 +//usage: "[-vcsndf] [-x ROW] [-y LINE] [CONSOLE_NO]"
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pascal@5711
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119 +//usage:#define conspy_full_usage "\n\n"
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pascal@5711
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120 +//usage: "A text-mode VNC like program for Linux virtual consoles."
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pascal@5711
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121 +//usage: "\nTo exit, quickly press ESC 3 times."
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pascal@5711
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122 +//usage: "\n"
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pascal@5711
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123 +//usage: "\nOptions:"
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pascal@5711
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124 +//usage: "\n -v Don't send keystrokes to the console"
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pascal@5711
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125 +//usage: "\n -c Create missing devices in /dev"
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pascal@5711
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126 +//usage: "\n -s Open a SHELL session"
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pascal@5711
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127 +//usage: "\n -n Black & white"
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pascal@5711
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128 +//usage: "\n -d Dump console to stdout"
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pascal@5711
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129 +//usage: "\n -f Follow cursor"
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pascal@5711
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130 +//usage: "\n -x ROW Starting row"
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pascal@5711
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131 +//usage: "\n -y LINE Starting line"
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pascal@5711
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132 +
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pascal@5684
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133 +#include "libbb.h"
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pascal@5711
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134 +#include <sys/kd.h>
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pascal@5711
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135 +
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pascal@5711
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136 +struct screen_info {
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pascal@5711
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137 + unsigned char lines, rows, cursor_x, cursor_y;
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pascal@5711
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138 +};
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pascal@5711
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139 +
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pascal@5711
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140 +#define CHAR(x) ((x)[0])
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pascal@5711
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141 +#define ATTR(x) ((x)[1])
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pascal@5711
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142 +#define NEXT(x) ((x)+=2)
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pascal@5711
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143 +#define DATA(x) (* (short *) (x))
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pascal@5711
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144 +
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pascal@5711
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145 +struct globals {
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pascal@5711
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146 + char* data;
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pascal@5711
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147 + int size;
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pascal@5711
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148 + int x, y;
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pascal@5711
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149 + int kbd_fd;
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pascal@5711
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150 + unsigned width;
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pascal@5711
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151 + unsigned height;
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pascal@5711
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152 + char last_attr;
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pascal@5711
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153 + int ioerror_count;
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pascal@5711
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154 + int key_count;
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pascal@5711
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155 + int escape_count;
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pascal@5711
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156 + int nokeys;
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pascal@5711
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157 + int current;
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pascal@5711
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158 + int vcsa_fd;
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pascal@5711
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159 + struct screen_info info;
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pascal@5711
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160 + struct termios term_orig;
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pascal@5711
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161 +};
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pascal@5711
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162 +
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pascal@5711
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163 +#define G (*ptr_to_globals)
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pascal@5711
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164 +#define INIT_G() do { \
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pascal@5711
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165 + SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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pascal@5711
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166 +} while (0)
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pascal@5711
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167 +
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pascal@5711
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168 +enum {
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pascal@5711
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169 + FLAG_v, // view only
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pascal@5711
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170 + FLAG_c, // create device if need
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pascal@5711
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171 + FLAG_s, // session
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pascal@5711
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172 + FLAG_n, // no colors
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pascal@5711
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173 + FLAG_d, // dump screen
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pascal@5711
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174 + FLAG_f, // follow cursor
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pascal@5711
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175 +};
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pascal@5711
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176 +#define FLAG(x) (1 << FLAG_##x)
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pascal@5711
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177 +#define BW (option_mask32 & FLAG(n))
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pascal@5711
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178 +
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pascal@5711
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179 +static void screen_read_close(void)
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pascal@5711
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180 +{
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pascal@5711
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181 + unsigned i, j;
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pascal@5711
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182 + char *data = G.data + G.current;
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pascal@5711
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183 +
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pascal@5711
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184 + xread(G.vcsa_fd, data, G.size);
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pascal@5711
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185 + G.last_attr = 0;
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pascal@5711
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186 + for (i = 0; i < G.info.lines; i++) {
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pascal@5711
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187 + for (j = 0; j < G.info.rows; j++, NEXT(data)) {
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pascal@5711
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188 + unsigned x = j - G.x; // if will catch j < G.x too
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pascal@5711
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189 + unsigned y = i - G.y; // if will catch i < G.y too
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pascal@5711
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190 +
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pascal@5711
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191 + if (CHAR(data) < ' ')
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pascal@5711
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192 + CHAR(data) = ' ';
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pascal@5711
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193 + if (y >= G.height || x >= G.width)
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pascal@5711
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194 + DATA(data) = 0;
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pascal@5711
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195 + }
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pascal@5711
|
196 + }
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pascal@5711
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197 + close(G.vcsa_fd);
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pascal@5711
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198 +}
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pascal@5711
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199 +
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pascal@5711
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200 +static void screen_char(char *data)
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pascal@5711
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201 +{
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pascal@5711
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202 + if (!BW && G.last_attr != ATTR(data)) {
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pascal@5711
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203 + // BLGCRMOW
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pascal@5711
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204 + static const char color[8] = "04261537";
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pascal@5711
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205 +
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pascal@5711
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206 + printf("\033[%c;4%c;3%cm",
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pascal@5711
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207 + (ATTR(data) & 8) ? '1' // bold
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pascal@5711
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208 + : '0', // defaults
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pascal@5711
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209 + color[(ATTR(data) >> 4) & 7], color[ATTR(data) & 7]);
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pascal@5711
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210 + G.last_attr = ATTR(data);
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pascal@5711
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211 + }
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pascal@5711
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212 + bb_putchar(CHAR(data));
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pascal@5711
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213 +}
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pascal@5711
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214 +
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pascal@5711
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215 +#define clrscr() printf("\033[1;1H" "\033[0J")
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pascal@5711
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216 +#define curoff() printf("\033[?25l")
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pascal@5711
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217 +
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pascal@5711
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218 +static void curon(void)
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pascal@5711
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219 +{
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pascal@5711
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220 + printf("\033[?25h");
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pascal@5711
|
221 +}
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pascal@5711
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222 +
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pascal@5711
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223 +static void gotoxy(int row, int line)
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pascal@5711
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224 +{
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pascal@5711
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225 + printf("\033[%u;%uH", line + 1, row + 1);
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pascal@5711
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226 +}
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pascal@5711
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227 +
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pascal@5711
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228 +static void screen_dump(void)
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pascal@5711
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229 +{
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pascal@5711
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230 + int linefeed_cnt;
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pascal@5711
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231 + int line, row;
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pascal@5711
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232 + int linecnt = G.info.lines - G.y;
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pascal@5711
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233 + char *data = G.data + G.current + (2 * G.y * G.info.rows);
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pascal@5711
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234 +
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pascal@5711
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235 + linefeed_cnt = 0;
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pascal@5711
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236 + for (line = 0; line < linecnt && line < G.height; line++) {
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pascal@5711
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237 + int space_cnt = 0;
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pascal@5711
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238 + for (row = 0; row < G.info.rows; row++, NEXT(data)) {
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pascal@5711
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239 + unsigned tty_row = row - G.x; // if will catch row < G.x too
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pascal@5711
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240 +
|
pascal@5711
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241 + if (tty_row >= G.width)
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pascal@5711
|
242 + continue;
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pascal@5711
|
243 + space_cnt++;
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pascal@5711
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244 + if (BW && (CHAR(data) | ' ') == ' ')
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pascal@5711
|
245 + continue;
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pascal@5711
|
246 + while (linefeed_cnt != 0) {
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pascal@5711
|
247 + bb_putchar('\r');
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pascal@5711
|
248 + bb_putchar('\n');
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pascal@5711
|
249 + linefeed_cnt--;
|
pascal@5711
|
250 + }
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pascal@5711
|
251 + while (--space_cnt)
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pascal@5711
|
252 + bb_putchar(' ');
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pascal@5711
|
253 + screen_char(data);
|
pascal@5711
|
254 + }
|
pascal@5711
|
255 + linefeed_cnt++;
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pascal@5711
|
256 + }
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pascal@5711
|
257 +}
|
pascal@5711
|
258 +
|
pascal@5711
|
259 +static void curmove(void)
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pascal@5711
|
260 +{
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pascal@5711
|
261 + unsigned cx = G.info.cursor_x - G.x;
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pascal@5711
|
262 + unsigned cy = G.info.cursor_y - G.y;
|
pascal@5711
|
263 +
|
pascal@5711
|
264 + if (cx >= G.width || cy >= G.height) {
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pascal@5711
|
265 + curoff();
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pascal@5711
|
266 + } else {
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pascal@5711
|
267 + curon();
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pascal@5711
|
268 + gotoxy(cx, cy);
|
pascal@5711
|
269 + }
|
pascal@5711
|
270 + fflush_all();
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pascal@5711
|
271 +}
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pascal@5711
|
272 +
|
pascal@5711
|
273 +static void cleanup(int code)
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pascal@5711
|
274 +{
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pascal@5711
|
275 + curon();
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pascal@5711
|
276 + fflush_all();
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pascal@5711
|
277 + tcsetattr(G.kbd_fd, TCSANOW, &G.term_orig);
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pascal@5711
|
278 + if (ENABLE_FEATURE_CLEAN_UP) {
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pascal@5711
|
279 + free(ptr_to_globals);
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pascal@5711
|
280 + close(G.kbd_fd);
|
pascal@5711
|
281 + }
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pascal@5711
|
282 + // Reset attributes
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pascal@5711
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283 + if (!BW)
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pascal@5711
|
284 + printf("\033[0m");
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pascal@5711
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285 + bb_putchar('\n');
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pascal@5711
|
286 + if (code > 1)
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pascal@5711
|
287 + kill_myself_with_sig(code); // does not return
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pascal@5711
|
288 + exit(code);
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pascal@5711
|
289 +}
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pascal@5711
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290 +
|
pascal@5711
|
291 +static void get_initial_data(const char* vcsa_name)
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pascal@5711
|
292 +{
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pascal@5711
|
293 + G.vcsa_fd = xopen(vcsa_name, O_RDONLY);
|
pascal@5711
|
294 + xread(G.vcsa_fd, &G.info, 4);
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pascal@5711
|
295 + G.size = G.info.rows * G.info.lines * 2;
|
pascal@5711
|
296 + G.width = G.height = UINT_MAX;
|
pascal@5711
|
297 + G.data = xzalloc(2 * G.size);
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pascal@5711
|
298 + screen_read_close();
|
pascal@5711
|
299 +}
|
pascal@5711
|
300 +
|
pascal@5711
|
301 +static void create_cdev_if_doesnt_exist(const char* name, dev_t dev)
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pascal@5711
|
302 +{
|
pascal@5711
|
303 + int fd = open(name, O_RDONLY);
|
pascal@5711
|
304 + if (fd != -1)
|
pascal@5711
|
305 + close(fd);
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pascal@5711
|
306 + else if (errno == ENOENT)
|
pascal@5711
|
307 + mknod(name, S_IFCHR | 0660, dev);
|
pascal@5711
|
308 +}
|
pascal@5711
|
309 +
|
pascal@5711
|
310 +static NOINLINE void start_shell_in_child(const char* tty_name)
|
pascal@5711
|
311 +{
|
pascal@5711
|
312 + int pid = vfork();
|
pascal@5711
|
313 + if (pid < 0) {
|
pascal@5711
|
314 + bb_perror_msg_and_die("vfork");
|
pascal@5711
|
315 + }
|
pascal@5711
|
316 + if (pid == 0) {
|
pascal@5711
|
317 + struct termios termchild;
|
pascal@5711
|
318 + char *shell = getenv("SHELL");
|
pascal@5711
|
319 +
|
pascal@5711
|
320 + if (!shell)
|
pascal@5711
|
321 + shell = (char *) DEFAULT_SHELL;
|
pascal@5711
|
322 + signal(SIGHUP, SIG_IGN);
|
pascal@5711
|
323 + // set tty as a controlling tty
|
pascal@5711
|
324 + setsid();
|
pascal@5711
|
325 + // make tty to be input, output, error
|
pascal@5711
|
326 + close(0);
|
pascal@5711
|
327 + xopen(tty_name, O_RDWR); // uses fd 0
|
pascal@5711
|
328 + xdup2(0, 1);
|
pascal@5711
|
329 + xdup2(0, 2);
|
pascal@5711
|
330 + ioctl(0, TIOCSCTTY, 1);
|
pascal@5711
|
331 + tcsetpgrp(0, getpid());
|
pascal@5711
|
332 + tcgetattr(0, &termchild);
|
pascal@5711
|
333 + termchild.c_lflag |= ECHO;
|
pascal@5711
|
334 + termchild.c_oflag |= ONLCR | XTABS;
|
pascal@5711
|
335 + termchild.c_iflag |= ICRNL;
|
pascal@5711
|
336 + termchild.c_iflag &= ~IXOFF;
|
pascal@5711
|
337 + tcsetattr_stdin_TCSANOW(&termchild);
|
pascal@5711
|
338 + execl(shell, shell, "-i", (char *) NULL);
|
pascal@5711
|
339 + bb_simple_perror_msg_and_die(shell);
|
pascal@5711
|
340 + }
|
pascal@5711
|
341 +}
|
pascal@5684
|
342 +
|
pascal@5684
|
343 +int vcsa2txt_main(int argc) MAIN_EXTERNALLY_VISIBLE;
|
pascal@5684
|
344 +int vcsa2txt_main(int argc)
|
pascal@5684
|
345 +{
|
pascal@5711
|
346 + INIT_G();
|
pascal@5711
|
347 + option_mask32 = FLAG(n);
|
pascal@5711
|
348 + if (argc < 2) option_mask32 = 0;
|
pascal@5711
|
349 + xread(0, &G.info, 4);
|
pascal@5711
|
350 + G.size = G.info.rows * G.info.lines * 2;
|
pascal@5711
|
351 + G.width = G.height = UINT_MAX;
|
pascal@5711
|
352 + G.data = xzalloc(G.size);
|
pascal@5711
|
353 + screen_read_close();
|
pascal@5711
|
354 + screen_dump();
|
pascal@5711
|
355 + bb_putchar('\n');
|
pascal@5711
|
356 + if (ENABLE_FEATURE_CLEAN_UP) {
|
pascal@5711
|
357 + free(ptr_to_globals);
|
pascal@5711
|
358 + close(G.kbd_fd);
|
pascal@5711
|
359 + }
|
pascal@5711
|
360 + return 0;
|
pascal@5711
|
361 +}
|
pascal@5711
|
362 +
|
pascal@5711
|
363 +int conspy_main(int argc UNUSED_PARAM, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
pascal@5711
|
364 +int conspy_main(int argc UNUSED_PARAM, char **argv)
|
pascal@5711
|
365 +{
|
pascal@5711
|
366 + char vcsa_name[sizeof("/dev/vcsa") + 2];
|
pascal@5711
|
367 + char tty_name[sizeof("/dev/tty") + 2];
|
pascal@5711
|
368 +#define keybuf bb_common_bufsiz1
|
pascal@5711
|
369 + struct termios termbuf;
|
pascal@5711
|
370 + unsigned opts;
|
pascal@5711
|
371 + unsigned ttynum;
|
pascal@5711
|
372 + int poll_timeout_ms;
|
pascal@5711
|
373 +#if ENABLE_LONG_OPTS
|
pascal@5711
|
374 + static const char getopt_longopts[] ALIGN1 =
|
pascal@5711
|
375 + "viewonly\0" No_argument "v"
|
pascal@5711
|
376 + "createdevice\0" No_argument "c"
|
pascal@5711
|
377 + "session\0" No_argument "s"
|
pascal@5711
|
378 + "nocolors\0" No_argument "n"
|
pascal@5711
|
379 + "dump\0" No_argument "d"
|
pascal@5711
|
380 + "follow\0" No_argument "f"
|
pascal@5711
|
381 + ;
|
pascal@5711
|
382 +
|
pascal@5711
|
383 + applet_long_options = getopt_longopts;
|
pascal@5711
|
384 +#endif
|
pascal@5711
|
385 + INIT_G();
|
pascal@5711
|
386 +
|
pascal@5711
|
387 + opt_complementary = "x+:y+"; // numeric params
|
pascal@5711
|
388 + opts = getopt32(argv, "vcsndfx:y:", &G.x, &G.y);
|
pascal@5711
|
389 + argv += optind;
|
pascal@5711
|
390 + ttynum = 0;
|
pascal@5711
|
391 + if (argv[0]) {
|
pascal@5711
|
392 + ttynum = xatou_range(argv[0], 0, 63);
|
pascal@5711
|
393 + }
|
pascal@5711
|
394 + sprintf(vcsa_name, "/dev/vcsa%u", ttynum);
|
pascal@5711
|
395 + sprintf(tty_name, "%s%u", "/dev/tty", ttynum);
|
pascal@5711
|
396 + if (opts & FLAG(c)) {
|
pascal@5711
|
397 + if ((opts & (FLAG(s)|FLAG(v))) != FLAG(v))
|
pascal@5711
|
398 + create_cdev_if_doesnt_exist(tty_name, makedev(4, ttynum));
|
pascal@5711
|
399 + create_cdev_if_doesnt_exist(vcsa_name, makedev(7, 128 + ttynum));
|
pascal@5711
|
400 + }
|
pascal@5711
|
401 + if ((opts & FLAG(s)) && ttynum) {
|
pascal@5711
|
402 + start_shell_in_child(tty_name);
|
pascal@5711
|
403 + }
|
pascal@5711
|
404 +
|
pascal@5711
|
405 + get_initial_data(vcsa_name);
|
pascal@5711
|
406 + G.kbd_fd = xopen(CURRENT_TTY, O_RDONLY);
|
pascal@5711
|
407 + if (opts & FLAG(d)) {
|
pascal@5711
|
408 + screen_dump();
|
pascal@5711
|
409 + bb_putchar('\n');
|
pascal@5711
|
410 + if (ENABLE_FEATURE_CLEAN_UP) {
|
pascal@5711
|
411 + free(ptr_to_globals);
|
pascal@5711
|
412 + close(G.kbd_fd);
|
pascal@5711
|
413 + }
|
pascal@5711
|
414 + return 0;
|
pascal@5711
|
415 + }
|
pascal@5711
|
416 +
|
pascal@5711
|
417 + bb_signals(BB_FATAL_SIGS, cleanup);
|
pascal@5711
|
418 + // All characters must be passed through to us unaltered
|
pascal@5711
|
419 + tcgetattr(G.kbd_fd, &G.term_orig);
|
pascal@5711
|
420 + termbuf = G.term_orig;
|
pascal@5711
|
421 + termbuf.c_iflag &= ~(BRKINT|INLCR|ICRNL|IXON|IXOFF|IUCLC|IXANY|IMAXBEL);
|
pascal@5711
|
422 + termbuf.c_oflag &= ~(OPOST);
|
pascal@5711
|
423 + termbuf.c_lflag &= ~(ISIG|ICANON|ECHO);
|
pascal@5711
|
424 + termbuf.c_cc[VMIN] = 1;
|
pascal@5711
|
425 + termbuf.c_cc[VTIME] = 0;
|
pascal@5711
|
426 + tcsetattr(G.kbd_fd, TCSANOW, &termbuf);
|
pascal@5711
|
427 + poll_timeout_ms = 250;
|
pascal@5711
|
428 + while (1) {
|
pascal@5711
|
429 + struct pollfd pfd;
|
pascal@5711
|
430 + int bytes_read;
|
pascal@5711
|
431 + int i, j;
|
pascal@5711
|
432 + char *data, *old;
|
pascal@5711
|
433 +
|
pascal@5711
|
434 + old = G.data + G.current;
|
pascal@5711
|
435 + G.current = G.size - G.current;
|
pascal@5711
|
436 + data = G.data + G.current;
|
pascal@5684
|
437 +
|
pascal@5711
|
438 + // Close & re-open vcsa in case they have
|
pascal@5711
|
439 + // swapped virtual consoles
|
pascal@5711
|
440 + G.vcsa_fd = xopen(vcsa_name, O_RDONLY);
|
pascal@5711
|
441 + xread(G.vcsa_fd, &G.info, 4);
|
pascal@5711
|
442 + if (G.size != (G.info.rows * G.info.lines * 2)) {
|
pascal@5711
|
443 + cleanup(1);
|
pascal@5711
|
444 + }
|
pascal@5711
|
445 + i = G.width;
|
pascal@5711
|
446 + j = G.height;
|
pascal@5711
|
447 + get_terminal_width_height(G.kbd_fd, &G.width, &G.height);
|
pascal@5711
|
448 + if ((option_mask32 & FLAG(f))) {
|
pascal@5711
|
449 + int nx = G.info.cursor_x - G.width + 1;
|
pascal@5711
|
450 + int ny = G.info.cursor_y - G.height + 1;
|
pascal@5711
|
451 +
|
pascal@5711
|
452 + if (G.info.cursor_x < G.x) {
|
pascal@5711
|
453 + G.x = G.info.cursor_x;
|
pascal@5711
|
454 + i = 0; // force refresh
|
pascal@5684
|
455 + }
|
pascal@5711
|
456 + if (nx > G.x) {
|
pascal@5711
|
457 + G.x = nx;
|
pascal@5711
|
458 + i = 0; // force refresh
|
pascal@5711
|
459 + }
|
pascal@5711
|
460 + if (G.info.cursor_y < G.y) {
|
pascal@5711
|
461 + G.y = G.info.cursor_y;
|
pascal@5711
|
462 + i = 0; // force refresh
|
pascal@5711
|
463 + }
|
pascal@5711
|
464 + if (ny > G.y) {
|
pascal@5711
|
465 + G.y = ny;
|
pascal@5711
|
466 + i = 0; // force refresh
|
pascal@5711
|
467 + }
|
pascal@5711
|
468 + }
|
pascal@5711
|
469 +
|
pascal@5711
|
470 + // Scan console data and redraw our tty where needed
|
pascal@5711
|
471 + screen_read_close();
|
pascal@5711
|
472 + if (i != G.width || j != G.height) {
|
pascal@5711
|
473 + clrscr();
|
pascal@5711
|
474 + screen_dump();
|
pascal@5711
|
475 + }
|
pascal@5711
|
476 + else for (i = 0; i < G.info.lines; i++) {
|
pascal@5711
|
477 + char *last = last;
|
pascal@5711
|
478 + char *first = NULL;
|
pascal@5711
|
479 + int iy = i - G.y;
|
pascal@5711
|
480 +
|
pascal@5711
|
481 + if (iy >= (int) G.height)
|
pascal@5711
|
482 + break;
|
pascal@5711
|
483 + for (j = 0; j < G.info.rows; j++) {
|
pascal@5711
|
484 + last = data;
|
pascal@5711
|
485 + if (DATA(data) != DATA(old) && iy >= 0) {
|
pascal@5711
|
486 + unsigned jx = j - G.x;
|
pascal@5711
|
487 +
|
pascal@5711
|
488 + last = NULL;
|
pascal@5711
|
489 + if (first == NULL && jx < G.width) {
|
pascal@5711
|
490 + first = data;
|
pascal@5711
|
491 + gotoxy(jx, iy);
|
pascal@5711
|
492 + }
|
pascal@5711
|
493 + }
|
pascal@5711
|
494 + NEXT(old);
|
pascal@5711
|
495 + NEXT(data);
|
pascal@5711
|
496 + }
|
pascal@5711
|
497 + if (first == NULL)
|
pascal@5711
|
498 + continue;
|
pascal@5711
|
499 + if (last == NULL)
|
pascal@5711
|
500 + last = data;
|
pascal@5711
|
501 +
|
pascal@5711
|
502 + // Write the data to the screen
|
pascal@5711
|
503 + for (; first < last; NEXT(first))
|
pascal@5711
|
504 + screen_char(first);
|
pascal@5711
|
505 + }
|
pascal@5711
|
506 + curmove();
|
pascal@5711
|
507 +
|
pascal@5711
|
508 + // Wait for local user keypresses
|
pascal@5711
|
509 + pfd.fd = G.kbd_fd;
|
pascal@5711
|
510 + pfd.events = POLLIN;
|
pascal@5711
|
511 + bytes_read = 0;
|
pascal@5711
|
512 + switch (poll(&pfd, 1, poll_timeout_ms)) {
|
pascal@5711
|
513 + char *k;
|
pascal@5711
|
514 + case -1:
|
pascal@5711
|
515 + if (errno != EINTR)
|
pascal@5711
|
516 + cleanup(1);
|
pascal@5711
|
517 + break;
|
pascal@5711
|
518 + case 0:
|
pascal@5711
|
519 + if (++G.nokeys >= 4)
|
pascal@5711
|
520 + G.nokeys = G.escape_count = 0;
|
pascal@5711
|
521 + break;
|
pascal@5711
|
522 + default:
|
pascal@5711
|
523 + // Read the keys pressed
|
pascal@5711
|
524 + k = keybuf + G.key_count;
|
pascal@5711
|
525 + bytes_read = read(G.kbd_fd, k, sizeof(keybuf) - G.key_count);
|
pascal@5711
|
526 + if (bytes_read < 0)
|
pascal@5711
|
527 + cleanup(1);
|
pascal@5711
|
528 +
|
pascal@5711
|
529 + // Do exit processing
|
pascal@5711
|
530 + for (i = 0; i < bytes_read; i++) {
|
pascal@5711
|
531 + if (k[i] != '\033') G.escape_count = 0;
|
pascal@5711
|
532 + else if (++G.escape_count >= 3)
|
pascal@5711
|
533 + cleanup(0);
|
pascal@5711
|
534 + }
|
pascal@5711
|
535 + }
|
pascal@5711
|
536 + poll_timeout_ms = 250;
|
pascal@5711
|
537 +
|
pascal@5711
|
538 + // Insert all keys pressed into the virtual console's input
|
pascal@5711
|
539 + // buffer. Don't do this if the virtual console is in scan
|
pascal@5711
|
540 + // code mode - giving ASCII characters to a program expecting
|
pascal@5711
|
541 + // scan codes will confuse it.
|
pascal@5711
|
542 + if (!(option_mask32 & FLAG(v)) && G.escape_count == 0) {
|
pascal@5711
|
543 + int handle, result;
|
pascal@5711
|
544 + long kbd_mode;
|
pascal@5711
|
545 +
|
pascal@5711
|
546 + G.key_count += bytes_read;
|
pascal@5711
|
547 + handle = xopen(tty_name, O_WRONLY);
|
pascal@5711
|
548 + result = ioctl(handle, KDGKBMODE, &kbd_mode);
|
pascal@5711
|
549 + if (result == -1)
|
pascal@5711
|
550 + /* nothing */;
|
pascal@5711
|
551 + else if (kbd_mode != K_XLATE && kbd_mode != K_UNICODE)
|
pascal@5711
|
552 + G.key_count = 0; // scan code mode
|
pascal@5711
|
553 + else {
|
pascal@5711
|
554 + for (i = 0; i < G.key_count && result != -1; i++)
|
pascal@5711
|
555 + result = ioctl(handle, TIOCSTI, keybuf + i);
|
pascal@5711
|
556 + G.key_count -= i;
|
pascal@5711
|
557 + if (G.key_count)
|
pascal@5711
|
558 + memmove(keybuf, keybuf + i, G.key_count);
|
pascal@5711
|
559 + // If there is an application on console which reacts
|
pascal@5711
|
560 + // to keypresses, we need to make our first sleep
|
pascal@5711
|
561 + // shorter to quickly redraw whatever it printed there.
|
pascal@5711
|
562 + poll_timeout_ms = 20;
|
pascal@5711
|
563 + }
|
pascal@5711
|
564 + // Close & re-open tty in case they have
|
pascal@5711
|
565 + // swapped virtual consoles
|
pascal@5711
|
566 + close(handle);
|
pascal@5711
|
567 +
|
pascal@5711
|
568 + // We sometimes get spurious IO errors on the TTY
|
pascal@5711
|
569 + // as programs close and re-open it
|
pascal@5711
|
570 + if (result != -1)
|
pascal@5711
|
571 + G.ioerror_count = 0;
|
pascal@5711
|
572 + else if (errno != EIO || ++G.ioerror_count > 4)
|
pascal@5711
|
573 + cleanup(1);
|
pascal@5711
|
574 + }
|
pascal@5684
|
575 + }
|
pascal@5684
|
576 +}
|