1 | /* bashhist.c -- bash interface to the GNU history library. */ |
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2 | |
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3 | /* Copyright (C) 1993-2004 Free Software Foundation, Inc. |
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4 | |
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5 | This file is part of GNU Bash, the Bourne Again SHell. |
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6 | |
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7 | Bash is free software; you can redistribute it and/or modify it under |
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8 | the terms of the GNU General Public License as published by the Free |
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9 | Software Foundation; either version 2, or (at your option) any later |
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10 | version. |
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11 | |
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12 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY |
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13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 | for more details. |
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16 | |
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17 | You should have received a copy of the GNU General Public License along |
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18 | with Bash; see the file COPYING. If not, write to the Free Software |
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19 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
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20 | |
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21 | #include "config.h" |
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22 | |
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23 | #if defined (HISTORY) |
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24 | |
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25 | #if defined (HAVE_UNISTD_H) |
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26 | # ifdef _MINIX |
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27 | # include <sys/types.h> |
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28 | # endif |
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29 | # include <unistd.h> |
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30 | #endif |
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31 | |
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32 | #include "bashtypes.h" |
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33 | #include <stdio.h> |
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34 | #include <errno.h> |
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35 | #include "bashansi.h" |
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36 | #include "posixstat.h" |
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37 | #include "filecntl.h" |
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38 | |
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39 | #include "bashintl.h" |
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40 | |
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41 | #include "shell.h" |
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42 | #include "flags.h" |
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43 | #include "input.h" |
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44 | #include "parser.h" /* for the struct dstack stuff. */ |
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45 | #include "pathexp.h" /* for the struct ignorevar stuff */ |
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46 | #include "bashhist.h" /* matching prototypes and declarations */ |
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47 | #include "builtins/common.h" |
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48 | |
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49 | #include <readline/history.h> |
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50 | #include <glob/glob.h> |
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51 | #include <glob/strmatch.h> |
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52 | |
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53 | #if defined (READLINE) |
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54 | # include "bashline.h" |
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55 | extern int rl_done, rl_dispatching; /* should really include readline.h */ |
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56 | #endif |
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57 | |
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58 | #if !defined (errno) |
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59 | extern int errno; |
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60 | #endif |
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61 | |
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62 | static int histignore_item_func __P((struct ign *)); |
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63 | static int check_history_control __P((char *)); |
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64 | static void hc_erasedups __P((char *)); |
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65 | static void really_add_history __P((char *)); |
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66 | |
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67 | static struct ignorevar histignore = |
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68 | { |
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69 | "HISTIGNORE", |
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70 | (struct ign *)0, |
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71 | 0, |
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72 | (char *)0, |
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73 | (sh_iv_item_func_t *)histignore_item_func, |
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74 | }; |
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75 | |
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76 | #define HIGN_EXPAND 0x01 |
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77 | |
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78 | /* Declarations of bash history variables. */ |
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79 | /* Non-zero means to remember lines typed to the shell on the history |
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80 | list. This is different than the user-controlled behaviour; this |
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81 | becomes zero when we read lines from a file, for example. */ |
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82 | int remember_on_history = 1; |
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83 | |
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84 | /* The number of lines that Bash has added to this history session. The |
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85 | difference between the number of the top element in the history list |
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86 | (offset from history_base) and the number of lines in the history file. |
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87 | Appending this session's history to the history file resets this to 0. */ |
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88 | int history_lines_this_session; |
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89 | |
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90 | /* The number of lines that Bash has read from the history file. */ |
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91 | int history_lines_in_file; |
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92 | |
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93 | #if defined (BANG_HISTORY) |
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94 | /* Non-zero means do no history expansion on this line, regardless |
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95 | of what history_expansion says. */ |
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96 | int history_expansion_inhibited; |
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97 | #endif |
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98 | |
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99 | /* With the old default, every line was saved in the history individually. |
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100 | I.e., if the user enters: |
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101 | bash$ for i in a b c |
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102 | > do |
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103 | > echo $i |
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104 | > done |
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105 | Each line will be individually saved in the history. |
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106 | bash$ history |
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107 | 10 for i in a b c |
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108 | 11 do |
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109 | 12 echo $i |
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110 | 13 done |
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111 | 14 history |
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112 | If the variable command_oriented_history is set, multiple lines |
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113 | which form one command will be saved as one history entry. |
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114 | bash$ for i in a b c |
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115 | > do |
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116 | > echo $i |
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117 | > done |
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118 | bash$ history |
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119 | 10 for i in a b c |
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120 | do |
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121 | echo $i |
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122 | done |
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123 | 11 history |
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124 | The user can then recall the whole command all at once instead |
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125 | of just being able to recall one line at a time. |
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126 | |
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127 | This is now enabled by default. |
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128 | */ |
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129 | int command_oriented_history = 1; |
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130 | |
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131 | /* Set to 1 if the first line of a possibly-multi-line command was saved |
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132 | in the history list. Managed by maybe_add_history(), but global so |
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133 | the history-manipluating builtins can see it. */ |
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134 | int current_command_first_line_saved = 0; |
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135 | |
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136 | /* Non-zero means to store newlines in the history list when using |
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137 | command_oriented_history rather than trying to use semicolons. */ |
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138 | int literal_history; |
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139 | |
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140 | /* Non-zero means to append the history to the history file at shell |
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141 | exit, even if the history has been stifled. */ |
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142 | int force_append_history; |
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143 | |
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144 | /* A nit for picking at history saving. Flags have the following values: |
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145 | |
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146 | Value == 0 means save all lines parsed by the shell on the history. |
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147 | Value & HC_IGNSPACE means save all lines that do not start with a space. |
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148 | Value & HC_IGNDUPS means save all lines that do not match the last |
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149 | line saved. |
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150 | Value & HC_ERASEDUPS means to remove all other matching lines from the |
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151 | history list before saving the latest line. */ |
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152 | int history_control; |
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153 | |
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154 | /* Set to 1 if the last command was added to the history list successfully |
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155 | as a separate history entry; set to 0 if the line was ignored or added |
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156 | to a previous entry as part of command-oriented-history processing. */ |
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157 | int hist_last_line_added; |
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158 | |
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159 | #if defined (READLINE) |
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160 | /* If non-zero, and readline is being used, the user is offered the |
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161 | chance to re-edit a failed history expansion. */ |
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162 | int history_reediting; |
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163 | |
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164 | /* If non-zero, and readline is being used, don't directly execute a |
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165 | line with history substitution. Reload it into the editing buffer |
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166 | instead and let the user further edit and confirm with a newline. */ |
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167 | int hist_verify; |
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168 | |
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169 | #endif /* READLINE */ |
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170 | |
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171 | /* Non-zero means to not save function definitions in the history list. */ |
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172 | int dont_save_function_defs; |
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173 | |
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174 | /* Variables declared in other files used here. */ |
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175 | extern int current_command_line_count; |
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176 | |
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177 | extern struct dstack dstack; |
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178 | |
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179 | static int bash_history_inhibit_expansion __P((char *, int)); |
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180 | #if defined (READLINE) |
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181 | static void re_edit __P((char *)); |
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182 | #endif |
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183 | static int history_expansion_p __P((char *)); |
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184 | static int shell_comment __P((char *)); |
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185 | static int should_expand __P((char *)); |
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186 | static HIST_ENTRY *last_history_entry __P((void)); |
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187 | static char *expand_histignore_pattern __P((char *)); |
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188 | static int history_should_ignore __P((char *)); |
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189 | |
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190 | /* Is the history expansion starting at string[i] one that should not |
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191 | be expanded? */ |
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192 | static int |
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193 | bash_history_inhibit_expansion (string, i) |
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194 | char *string; |
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195 | int i; |
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196 | { |
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197 | /* The shell uses ! as a pattern negation character in globbing [...] |
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198 | expressions, so let those pass without expansion. */ |
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199 | if (i > 0 && (string[i - 1] == '[') && member (']', string + i + 1)) |
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200 | return (1); |
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201 | /* The shell uses ! as the indirect expansion character, so let those |
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202 | expansions pass as well. */ |
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203 | else if (i > 1 && string[i - 1] == '{' && string[i - 2] == '$' && |
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204 | member ('}', string + i + 1)) |
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205 | return (1); |
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206 | #if defined (EXTENDED_GLOB) |
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207 | else if (extended_glob && i > 1 && string[i+1] == '(' && member (')', string + i + 2)) |
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208 | return (1); |
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209 | #endif |
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210 | else |
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211 | return (0); |
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212 | } |
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213 | |
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214 | void |
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215 | bash_initialize_history () |
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216 | { |
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217 | history_quotes_inhibit_expansion = 1; |
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218 | history_search_delimiter_chars = ";&()|<>"; |
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219 | history_inhibit_expansion_function = bash_history_inhibit_expansion; |
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220 | sv_histchars ("histchars"); |
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221 | } |
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222 | |
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223 | void |
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224 | bash_history_reinit (interact) |
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225 | int interact; |
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226 | { |
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227 | #if defined (BANG_HISTORY) |
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228 | history_expansion = interact != 0; |
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229 | history_expansion_inhibited = 1; |
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230 | #endif |
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231 | remember_on_history = interact != 0; |
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232 | history_inhibit_expansion_function = bash_history_inhibit_expansion; |
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233 | } |
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234 | |
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235 | void |
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236 | bash_history_disable () |
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237 | { |
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238 | remember_on_history = 0; |
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239 | #if defined (BANG_HISTORY) |
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240 | history_expansion_inhibited = 1; |
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241 | #endif |
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242 | } |
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243 | |
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244 | void |
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245 | bash_history_enable () |
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246 | { |
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247 | remember_on_history = 1; |
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248 | #if defined (BANG_HISTORY) |
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249 | history_expansion_inhibited = 0; |
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250 | #endif |
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251 | history_inhibit_expansion_function = bash_history_inhibit_expansion; |
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252 | sv_history_control ("HISTCONTROL"); |
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253 | sv_histignore ("HISTIGNORE"); |
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254 | } |
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255 | |
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256 | /* Load the history list from the history file. */ |
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257 | void |
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258 | load_history () |
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259 | { |
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260 | char *hf; |
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261 | struct stat buf; |
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262 | |
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263 | /* Truncate history file for interactive shells which desire it. |
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264 | Note that the history file is automatically truncated to the |
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265 | size of HISTSIZE if the user does not explicitly set the size |
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266 | differently. */ |
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267 | set_if_not ("HISTFILESIZE", get_string_value ("HISTSIZE")); |
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268 | sv_histsize ("HISTFILESIZE"); |
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269 | |
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270 | /* Read the history in HISTFILE into the history list. */ |
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271 | hf = get_string_value ("HISTFILE"); |
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272 | |
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273 | if (hf && *hf && stat (hf, &buf) == 0) |
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274 | { |
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275 | read_history (hf); |
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276 | using_history (); |
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277 | history_lines_in_file = where_history (); |
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278 | } |
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279 | } |
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280 | |
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281 | #ifdef INCLUDE_UNUSED |
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282 | /* Write the existing history out to the history file. */ |
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283 | void |
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284 | save_history () |
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285 | { |
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286 | char *hf; |
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287 | struct stat buf; |
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288 | |
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289 | hf = get_string_value ("HISTFILE"); |
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290 | if (hf && *hf && stat (hf, &buf) == 0) |
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291 | { |
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292 | /* Append only the lines that occurred this session to |
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293 | the history file. */ |
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294 | using_history (); |
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295 | |
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296 | if (history_lines_this_session < where_history () || force_append_history) |
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297 | append_history (history_lines_this_session, hf); |
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298 | else |
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299 | write_history (hf); |
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300 | |
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301 | sv_histsize ("HISTFILESIZE"); |
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302 | } |
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303 | } |
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304 | #endif |
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305 | |
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306 | int |
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307 | maybe_append_history (filename) |
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308 | char *filename; |
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309 | { |
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310 | int fd, result; |
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311 | struct stat buf; |
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312 | |
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313 | result = EXECUTION_SUCCESS; |
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314 | if (history_lines_this_session && (history_lines_this_session < where_history ())) |
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315 | { |
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316 | /* If the filename was supplied, then create it if necessary. */ |
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317 | if (stat (filename, &buf) == -1 && errno == ENOENT) |
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318 | { |
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319 | fd = open (filename, O_WRONLY|O_CREAT, 0600); |
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320 | if (fd < 0) |
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321 | { |
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322 | builtin_error (_("%s: cannot create: %s"), filename, strerror (errno)); |
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323 | return (EXECUTION_FAILURE); |
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324 | } |
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325 | close (fd); |
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326 | } |
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327 | result = append_history (history_lines_this_session, filename); |
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328 | history_lines_in_file += history_lines_this_session; |
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329 | history_lines_this_session = 0; |
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330 | } |
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331 | return (result); |
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332 | } |
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333 | |
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334 | /* If this is an interactive shell, then append the lines executed |
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335 | this session to the history file. */ |
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336 | int |
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337 | maybe_save_shell_history () |
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338 | { |
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339 | int result; |
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340 | char *hf; |
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341 | struct stat buf; |
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342 | |
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343 | result = 0; |
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344 | if (history_lines_this_session) |
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345 | { |
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346 | hf = get_string_value ("HISTFILE"); |
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347 | |
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348 | if (hf && *hf) |
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349 | { |
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350 | /* If the file doesn't exist, then create it. */ |
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351 | if (stat (hf, &buf) == -1) |
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352 | { |
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353 | int file; |
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354 | file = open (hf, O_CREAT | O_TRUNC | O_WRONLY, 0600); |
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355 | if (file != -1) |
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356 | close (file); |
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357 | } |
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358 | |
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359 | /* Now actually append the lines if the history hasn't been |
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360 | stifled. If the history has been stifled, rewrite the |
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361 | history file. */ |
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362 | using_history (); |
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363 | if (history_lines_this_session <= where_history () || force_append_history) |
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364 | { |
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365 | result = append_history (history_lines_this_session, hf); |
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366 | history_lines_in_file += history_lines_this_session; |
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367 | } |
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368 | else |
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369 | { |
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370 | result = write_history (hf); |
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371 | history_lines_in_file = history_lines_this_session; |
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372 | } |
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373 | history_lines_this_session = 0; |
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374 | |
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375 | sv_histsize ("HISTFILESIZE"); |
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376 | } |
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377 | } |
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378 | return (result); |
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379 | } |
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380 | |
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381 | #if defined (READLINE) |
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382 | /* Tell readline () that we have some text for it to edit. */ |
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383 | static void |
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384 | re_edit (text) |
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385 | char *text; |
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386 | { |
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387 | if (bash_input.type == st_stdin) |
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388 | bash_re_edit (text); |
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389 | } |
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390 | #endif /* READLINE */ |
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391 | |
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392 | /* Return 1 if this line needs history expansion. */ |
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393 | static int |
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394 | history_expansion_p (line) |
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395 | char *line; |
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396 | { |
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397 | register char *s; |
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398 | |
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399 | for (s = line; *s; s++) |
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400 | if (*s == history_expansion_char || *s == history_subst_char) |
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401 | return 1; |
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402 | return 0; |
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403 | } |
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404 | |
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405 | /* Do pre-processing on LINE. If PRINT_CHANGES is non-zero, then |
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406 | print the results of expanding the line if there were any changes. |
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407 | If there is an error, return NULL, otherwise the expanded line is |
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408 | returned. If ADDIT is non-zero the line is added to the history |
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409 | list after history expansion. ADDIT is just a suggestion; |
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410 | REMEMBER_ON_HISTORY can veto, and does. |
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411 | Right now this does history expansion. */ |
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412 | char * |
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413 | pre_process_line (line, print_changes, addit) |
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414 | char *line; |
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415 | int print_changes, addit; |
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416 | { |
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417 | char *history_value; |
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418 | char *return_value; |
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419 | int expanded; |
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420 | |
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421 | return_value = line; |
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422 | expanded = 0; |
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423 | |
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424 | # if defined (BANG_HISTORY) |
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425 | /* History expand the line. If this results in no errors, then |
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426 | add that line to the history if ADDIT is non-zero. */ |
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427 | if (!history_expansion_inhibited && history_expansion && history_expansion_p (line)) |
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428 | { |
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429 | expanded = history_expand (line, &history_value); |
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430 | |
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431 | if (expanded) |
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432 | { |
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433 | if (print_changes) |
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434 | { |
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435 | if (expanded < 0) |
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436 | internal_error ("%s", history_value); |
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437 | #if defined (READLINE) |
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438 | else if (hist_verify == 0 || expanded == 2) |
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439 | #else |
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440 | else |
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441 | #endif |
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442 | fprintf (stderr, "%s\n", history_value); |
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443 | } |
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444 | |
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445 | /* If there was an error, return NULL. */ |
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446 | if (expanded < 0 || expanded == 2) /* 2 == print only */ |
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447 | { |
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448 | # if defined (READLINE) |
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449 | if (expanded == 2 && rl_dispatching == 0 && *history_value) |
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450 | # else |
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451 | if (expanded == 2 && *history_value) |
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452 | # endif /* !READLINE */ |
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453 | maybe_add_history (history_value); |
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454 | |
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455 | free (history_value); |
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456 | |
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457 | # if defined (READLINE) |
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458 | /* New hack. We can allow the user to edit the |
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459 | failed history expansion. */ |
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460 | if (history_reediting && expanded < 0 && rl_done) |
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461 | re_edit (line); |
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462 | # endif /* READLINE */ |
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463 | return ((char *)NULL); |
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464 | } |
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465 | |
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466 | # if defined (READLINE) |
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467 | if (hist_verify && expanded == 1) |
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468 | { |
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469 | re_edit (history_value); |
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470 | return ((char *)NULL); |
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471 | } |
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472 | # endif |
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473 | } |
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474 | |
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475 | /* Let other expansions know that return_value can be free'ed, |
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476 | and that a line has been added to the history list. Note |
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477 | that we only add lines that have something in them. */ |
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478 | expanded = 1; |
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479 | return_value = history_value; |
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480 | } |
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481 | # endif /* BANG_HISTORY */ |
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482 | |
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483 | if (addit && remember_on_history && *return_value) |
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484 | maybe_add_history (return_value); |
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485 | |
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486 | #if 0 |
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487 | if (expanded == 0) |
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488 | return_value = savestring (line); |
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489 | #endif |
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490 | |
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491 | return (return_value); |
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492 | } |
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493 | |
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494 | /* Return 1 if the first non-whitespace character in LINE is a `#', indicating |
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495 | * that the line is a shell comment. */ |
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496 | static int |
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497 | shell_comment (line) |
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498 | char *line; |
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499 | { |
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500 | char *p; |
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501 | |
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502 | for (p = line; p && *p && whitespace (*p); p++) |
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503 | ; |
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504 | return (p && *p == '#'); |
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505 | } |
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506 | |
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507 | #ifdef INCLUDE_UNUSED |
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508 | /* Remove shell comments from LINE. A `#' and anything after it is a comment. |
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509 | This isn't really useful yet, since it doesn't handle quoting. */ |
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510 | static char * |
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511 | filter_comments (line) |
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512 | char *line; |
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513 | { |
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514 | char *p; |
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515 | |
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516 | for (p = line; p && *p && *p != '#'; p++) |
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517 | ; |
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518 | if (p && *p == '#') |
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519 | *p = '\0'; |
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520 | return (line); |
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521 | } |
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522 | #endif |
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523 | |
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524 | /* Check LINE against what HISTCONTROL says to do. Returns 1 if the line |
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525 | should be saved; 0 if it should be discarded. */ |
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526 | static int |
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527 | check_history_control (line) |
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528 | char *line; |
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529 | { |
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530 | HIST_ENTRY *temp; |
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531 | int r; |
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532 | |
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533 | if (history_control == 0) |
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534 | return 1; |
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535 | |
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536 | /* ignorespace or ignoreboth */ |
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537 | if ((history_control & HC_IGNSPACE) && *line == ' ') |
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538 | return 0; |
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539 | |
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540 | /* ignoredups or ignoreboth */ |
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541 | if (history_control & HC_IGNDUPS) |
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542 | { |
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543 | using_history (); |
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544 | temp = previous_history (); |
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545 | |
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546 | r = (temp == 0 || STREQ (temp->line, line) == 0); |
---|
547 | |
---|
548 | using_history (); |
---|
549 | |
---|
550 | if (r == 0) |
---|
551 | return r; |
---|
552 | } |
---|
553 | |
---|
554 | return 1; |
---|
555 | } |
---|
556 | |
---|
557 | /* Remove all entries matching LINE from the history list. Triggered when |
---|
558 | HISTCONTROL includes `erasedups'. */ |
---|
559 | static void |
---|
560 | hc_erasedups (line) |
---|
561 | char *line; |
---|
562 | { |
---|
563 | HIST_ENTRY *temp; |
---|
564 | int r; |
---|
565 | |
---|
566 | using_history (); |
---|
567 | while (temp = previous_history ()) |
---|
568 | { |
---|
569 | if (STREQ (temp->line, line)) |
---|
570 | { |
---|
571 | r = where_history (); |
---|
572 | remove_history (r); |
---|
573 | } |
---|
574 | } |
---|
575 | using_history (); |
---|
576 | } |
---|
577 | |
---|
578 | /* Add LINE to the history list, handling possibly multi-line compound |
---|
579 | commands. We note whether or not we save the first line of each command |
---|
580 | (which is usually the entire command and history entry), and don't add |
---|
581 | the second and subsequent lines of a multi-line compound command if we |
---|
582 | didn't save the first line. We don't usually save shell comment lines in |
---|
583 | compound commands in the history, because they could have the effect of |
---|
584 | commenting out the rest of the command when the entire command is saved as |
---|
585 | a single history entry (when COMMAND_ORIENTED_HISTORY is enabled). If |
---|
586 | LITERAL_HISTORY is set, we're saving lines in the history with embedded |
---|
587 | newlines, so it's OK to save comment lines. We also make sure to save |
---|
588 | multiple-line quoted strings or other constructs. */ |
---|
589 | void |
---|
590 | maybe_add_history (line) |
---|
591 | char *line; |
---|
592 | { |
---|
593 | hist_last_line_added = 0; |
---|
594 | |
---|
595 | /* Don't use the value of history_control to affect the second |
---|
596 | and subsequent lines of a multi-line command (old code did |
---|
597 | this only when command_oriented_history is enabled). */ |
---|
598 | if (current_command_line_count > 1) |
---|
599 | { |
---|
600 | if (current_command_first_line_saved && |
---|
601 | (literal_history || dstack.delimiter_depth != 0 || shell_comment (line) == 0)) |
---|
602 | bash_add_history (line); |
---|
603 | return; |
---|
604 | } |
---|
605 | |
---|
606 | /* This is the first line of a (possible multi-line) command. Note whether |
---|
607 | or not we should save the first line and remember it. */ |
---|
608 | current_command_first_line_saved = check_add_history (line, 0); |
---|
609 | } |
---|
610 | |
---|
611 | /* Just check LINE against HISTCONTROL and HISTIGNORE and add it to the |
---|
612 | history if it's OK. Used by `history -s' as well as maybe_add_history(). |
---|
613 | Returns 1 if the line was saved in the history, 0 otherwise. */ |
---|
614 | int |
---|
615 | check_add_history (line, force) |
---|
616 | char *line; |
---|
617 | int force; |
---|
618 | { |
---|
619 | if (check_history_control (line) && history_should_ignore (line) == 0) |
---|
620 | { |
---|
621 | /* We're committed to saving the line. If the user has requested it, |
---|
622 | remove other matching lines from the history. */ |
---|
623 | if (history_control & HC_ERASEDUPS) |
---|
624 | hc_erasedups (line); |
---|
625 | |
---|
626 | if (force) |
---|
627 | { |
---|
628 | really_add_history (line); |
---|
629 | using_history (); |
---|
630 | } |
---|
631 | else |
---|
632 | bash_add_history (line); |
---|
633 | return 1; |
---|
634 | } |
---|
635 | return 0; |
---|
636 | } |
---|
637 | |
---|
638 | /* Add a line to the history list. |
---|
639 | The variable COMMAND_ORIENTED_HISTORY controls the style of history |
---|
640 | remembering; when non-zero, and LINE is not the first line of a |
---|
641 | complete parser construct, append LINE to the last history line instead |
---|
642 | of adding it as a new line. */ |
---|
643 | void |
---|
644 | bash_add_history (line) |
---|
645 | char *line; |
---|
646 | { |
---|
647 | int add_it, offset, curlen; |
---|
648 | HIST_ENTRY *current, *old; |
---|
649 | char *chars_to_add, *new_line; |
---|
650 | |
---|
651 | add_it = 1; |
---|
652 | if (command_oriented_history && current_command_line_count > 1) |
---|
653 | { |
---|
654 | chars_to_add = literal_history ? "\n" : history_delimiting_chars (); |
---|
655 | |
---|
656 | using_history (); |
---|
657 | current = previous_history (); |
---|
658 | |
---|
659 | if (current) |
---|
660 | { |
---|
661 | /* If the previous line ended with an escaped newline (escaped |
---|
662 | with backslash, but otherwise unquoted), then remove the quoted |
---|
663 | newline, since that is what happens when the line is parsed. */ |
---|
664 | curlen = strlen (current->line); |
---|
665 | |
---|
666 | if (dstack.delimiter_depth == 0 && current->line[curlen - 1] == '\\' && |
---|
667 | current->line[curlen - 2] != '\\') |
---|
668 | { |
---|
669 | current->line[curlen - 1] = '\0'; |
---|
670 | curlen--; |
---|
671 | chars_to_add = ""; |
---|
672 | } |
---|
673 | |
---|
674 | new_line = (char *)xmalloc (1 |
---|
675 | + curlen |
---|
676 | + strlen (line) |
---|
677 | + strlen (chars_to_add)); |
---|
678 | sprintf (new_line, "%s%s%s", current->line, chars_to_add, line); |
---|
679 | offset = where_history (); |
---|
680 | old = replace_history_entry (offset, new_line, current->data); |
---|
681 | free (new_line); |
---|
682 | |
---|
683 | if (old) |
---|
684 | free_history_entry (old); |
---|
685 | |
---|
686 | add_it = 0; |
---|
687 | } |
---|
688 | } |
---|
689 | |
---|
690 | if (add_it) |
---|
691 | really_add_history (line); |
---|
692 | |
---|
693 | using_history (); |
---|
694 | } |
---|
695 | |
---|
696 | #include <syslog.h> |
---|
697 | |
---|
698 | static void |
---|
699 | really_add_history (line) |
---|
700 | char *line; |
---|
701 | { |
---|
702 | static int do_log = -1; |
---|
703 | |
---|
704 | if (do_log == -1) |
---|
705 | do_log = (geteuid () == 0 && access ("/var/athena/iscluster", R_OK) == 0); |
---|
706 | if (do_log) |
---|
707 | syslog (LOG_NOTICE, "Cluster root command (%d): %s", |
---|
708 | (int) getuid (), line); |
---|
709 | |
---|
710 | hist_last_line_added = 1; |
---|
711 | add_history (line); |
---|
712 | history_lines_this_session++; |
---|
713 | } |
---|
714 | |
---|
715 | int |
---|
716 | history_number () |
---|
717 | { |
---|
718 | using_history (); |
---|
719 | return (get_string_value ("HISTSIZE") ? history_base + where_history () : 1); |
---|
720 | } |
---|
721 | |
---|
722 | static int |
---|
723 | should_expand (s) |
---|
724 | char *s; |
---|
725 | { |
---|
726 | char *p; |
---|
727 | |
---|
728 | for (p = s; p && *p; p++) |
---|
729 | { |
---|
730 | if (*p == '\\') |
---|
731 | p++; |
---|
732 | else if (*p == '&') |
---|
733 | return 1; |
---|
734 | } |
---|
735 | return 0; |
---|
736 | } |
---|
737 | |
---|
738 | static int |
---|
739 | histignore_item_func (ign) |
---|
740 | struct ign *ign; |
---|
741 | { |
---|
742 | if (should_expand (ign->val)) |
---|
743 | ign->flags |= HIGN_EXPAND; |
---|
744 | return (0); |
---|
745 | } |
---|
746 | |
---|
747 | void |
---|
748 | setup_history_ignore (varname) |
---|
749 | char *varname; |
---|
750 | { |
---|
751 | setup_ignore_patterns (&histignore); |
---|
752 | } |
---|
753 | |
---|
754 | static HIST_ENTRY * |
---|
755 | last_history_entry () |
---|
756 | { |
---|
757 | HIST_ENTRY *he; |
---|
758 | |
---|
759 | using_history (); |
---|
760 | he = previous_history (); |
---|
761 | using_history (); |
---|
762 | return he; |
---|
763 | } |
---|
764 | |
---|
765 | char * |
---|
766 | last_history_line () |
---|
767 | { |
---|
768 | HIST_ENTRY *he; |
---|
769 | |
---|
770 | he = last_history_entry (); |
---|
771 | if (he == 0) |
---|
772 | return ((char *)NULL); |
---|
773 | return he->line; |
---|
774 | } |
---|
775 | |
---|
776 | static char * |
---|
777 | expand_histignore_pattern (pat) |
---|
778 | char *pat; |
---|
779 | { |
---|
780 | HIST_ENTRY *phe; |
---|
781 | char *ret; |
---|
782 | |
---|
783 | phe = last_history_entry (); |
---|
784 | |
---|
785 | if (phe == (HIST_ENTRY *)0) |
---|
786 | return (savestring (pat)); |
---|
787 | |
---|
788 | ret = strcreplace (pat, '&', phe->line, 1); |
---|
789 | |
---|
790 | return ret; |
---|
791 | } |
---|
792 | |
---|
793 | /* Return 1 if we should not put LINE into the history according to the |
---|
794 | patterns in HISTIGNORE. */ |
---|
795 | static int |
---|
796 | history_should_ignore (line) |
---|
797 | char *line; |
---|
798 | { |
---|
799 | register int i, match; |
---|
800 | char *npat; |
---|
801 | |
---|
802 | if (histignore.num_ignores == 0) |
---|
803 | return 0; |
---|
804 | |
---|
805 | for (i = match = 0; i < histignore.num_ignores; i++) |
---|
806 | { |
---|
807 | if (histignore.ignores[i].flags & HIGN_EXPAND) |
---|
808 | npat = expand_histignore_pattern (histignore.ignores[i].val); |
---|
809 | else |
---|
810 | npat = histignore.ignores[i].val; |
---|
811 | |
---|
812 | match = strmatch (npat, line, FNMATCH_EXTFLAG) != FNM_NOMATCH; |
---|
813 | |
---|
814 | if (histignore.ignores[i].flags & HIGN_EXPAND) |
---|
815 | free (npat); |
---|
816 | |
---|
817 | if (match) |
---|
818 | break; |
---|
819 | } |
---|
820 | |
---|
821 | return match; |
---|
822 | } |
---|
823 | #endif /* HISTORY */ |
---|