File: sh.rotate

package info (click to toggle)
shtool 1.6.0-1
  • links: PTS
  • area: main
  • in suites: woody
  • size: 400 kB
  • ctags: 5
  • sloc: perl: 379; makefile: 156; sh: 52
file content (401 lines) | stat: -rw-r--r-- 14,040 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
##
##  rotate -- Logfile rotation
##  Copyright (c) 2001-2002 Ralf S. Engelschall <rse@engelschall.com>
##  Originally written for use in OpenPKG
##
##  This file is part of shtool and free software; you can redistribute
##  it and/or modify it under the terms of the GNU General Public
##  License as published by the Free Software Foundation; either version
##  2 of the License, or (at your option) any later version.
##
##  This file is distributed in the hope that it will be useful,
##  but WITHOUT ANY WARRANTY; without even the implied warranty of
##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
##  General Public License for more details.
##
##  You should have received a copy of the GNU General Public License
##  along with this program; if not, write to the Free Software
##  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
##  USA, or contact Ralf S. Engelschall <rse@engelschall.com>.
##

str_tool="rotate"
str_usage="[-v|--verbose] [-t|--trace] [-f|--force] [-n|--num-files <count>] [-s|--min-size <size>] [-c|--copy] [-r|--remove] [-a|--archive-dir <dir>] [-z|--compress [<tool>:]<level>] [-b|--background] [-d|--delay] [-p|--pad <len>] [-o|--owner <owner>] [-g|--group <group>] [-m|--mode <mode>] [-M|--migrate <cmd>] [-P|--prolog <cmd>] [-E|--epilog <cmd>] <file> [...]"
arg_spec="1+"
opt_spec="v.t.f.n:s:c.r.a:z:b.d.p:o:g:m:M:P:E:"
opt_alias="v:verbose,t:trace,f:force,n:num-files,s:size,m:min-size,c:copy,r:remove,a:archive-dir,z:compress,b:background,d:delay,p:pad,o:owner,g:group,m:mode,M:migrate,P:prolog,E:epilog"
opt_v=no
opt_t=no
opt_f=no
opt_n=10
opt_s=""
opt_c=no
opt_r=no
opt_a=""
opt_z=""
opt_b=no
opt_d=no
opt_p=1
opt_o=""
opt_g=""
opt_m=""
opt_M=""
opt_P=""
opt_E=""

. ./sh.common

#   make sure we have at least one file to rotate
if [ ".$opt_n" = .0 ]; then
    echo "$msgprefix:Error: invalid argument \`$opt_n' to option -n." 1>&2
    exit 1
fi

#   canonicalize -s option argument
if [ ".$opt_s" != . ]; then
    if [ ".`expr $opt_s : '[0-9]*$'`" != .0 ]; then
        :
    elif [ ".`expr $opt_s : '[0-9]*[Kk]$'`" != .0 ]; then
        opt_s=`expr $opt_s : '\([0-9]*\)[Kk]$'`
        opt_s=`expr $opt_s \* 1024`
    elif [ ".`expr $opt_s : '[0-9]*[Mm]$'`" != .0 ]; then
        opt_s=`expr $opt_s : '\([0-9]*\)[Mm]$'`
        opt_s=`expr $opt_s \* 1048576` # 1024*1024
    elif [ ".`expr $opt_s : '[0-9]*[Gg]$'`" != .0 ]; then
        opt_s=`expr $opt_s : '\([0-9]*\)[Gg]$'`
        opt_s=`expr $opt_s \* 1073741824` # 1024*1024*1024
    else
        echo "$msgprefix:Error: invalid argument \`$opt_s' to option -s." 1>&2
        exit 1
    fi
fi

#   option -d/-z consistency
if [ ".$opt_d" = .yes -a ".$opt_z" = . ]; then
    echo "$msgprefix:Error: option -d requires option -z." 1>&2
    exit 1
fi

#   make sure target directory exists
if [ ".$opt_a" != . ]; then
    if [ ! -d $opt_a ]; then
        if [ ".$opt_f" = .no ]; then
            echo "$msgprefix:Error: archive directory \`$opt_a' does not exist." 1>&2
            exit 1
        fi
        mkdir $opt_a || exit $?
        chmod 755 $opt_a
    fi
    if [ ! -w $opt_a ]; then
        echo "$msgprefix:Error: archive directory \`$opt_a' not writable." 1>&2
        exit 1
    fi
fi

#   determine compression approach
if [ ".$opt_z" != . ]; then
    comp_lvl="$opt_z"
    comp_prg=""
    case $comp_lvl in
        *:* ) eval `echo $comp_lvl |\
                    sed -e 's%^\(.*\):\(.*\)$%comp_prg="\1"; comp_lvl="\2"%'` ;;
    esac

    #   compression level consistency
    case $comp_lvl in
        [0-9] )
            ;;
        * ) echo "$msgprefix:Error: invalid compression level \`$comp_lvl'" 1>&2
            exit 1
            ;;
    esac

    #   determine a suitable compression tool
    if [ ".$comp_prg" = . ]; then
        #   check whether the test command supports the -x option
        if [ -x /bin/sh ] 2>/dev/null; then
            minusx="-x"
        else
            minusx="-r"
        fi
        #   search for tools in $PATH
        paths="`echo $PATH |\
                sed -e 's%/*:%:%g' -e 's%/*$%%' \
                    -e 's/^:/.:/' -e 's/::/:.:/g' -e 's/:$/:./' \
                    -e 's/:/ /g'`"
        for prg in bzip2 gzip compress; do
            for path in $paths; do
                if [ $minusx "$path/$prg" -a ! -d "$path/$prg" ]; then
                    comp_prg="$prg"
                    break
                fi
            done
            if [ ".$comp_prg" != . ]; then
                break
            fi
        done
        if [ ".$comp_prg" = . ]; then
            echo "$msgprefix:Error: no suitable compression tool found in \$PATH" 1>&2
            exit 1
        fi
    fi

    #   determine standard compression extension
    #   and make sure it is a known tool
    case $comp_prg in
        */bzip2    | bzip2    ) comp_ext="bz2" comp_lvl="-$comp_lvl" ;;
        */gzip     | gzip     ) comp_ext="gz"  comp_lvl="-$comp_lvl" ;;
        */compress | compress ) comp_ext="Z";  comp_lvl=""           ;;
        * ) echo "$msgprefix:Error: tool \`$comp_prg' is not a known compression tool" 1>&2
            exit 1
            ;;
    esac
    comp_suf=".$comp_ext"
fi

#   iterate over all given logfile arguments
for file in $*; do
    #   make sure the logfile exists
    if [ ! -f $file ]; then
        if [ ".$opt_f" = .yes ]; then
            continue
        fi
        echo "$msgprefix:Error: logfile \`$file' not found" 1>&2
        exit 1
    fi

    #   determine log directory (where original logfile is placed)
    ldir="."
    case $file in
        */* ) eval `echo $file | sed -e 's%^\(.*\)/\([^/]*\)$%ldir="\1"; file="\2";%'` ;;
    esac

    #   determine archive directory (where rotated logfiles are placed)
    adir="$ldir"
    if [ ".$opt_a" != . ]; then
        case "$opt_a" in
            /* | ./* ) adir="$opt_a" ;;
            * ) adir="$ldir/$opt_a"  ;;
        esac
    fi

    #   optionally take logfile size into account
    if [ ".$opt_s" != . ]; then
        #   determine size of logfile
        set -- `ls -l $ldir/$file | sed -e 's; -> .*$;;' -e 's;[ 	][ 	]*; ;g'`
        n=`expr $# - 4`
        eval "size=\`echo \${$n}\`"

        #   skip logfile if size is still too small
        if [ $size -lt $opt_s ]; then
            if [ ".$opt_v" = .yes ]; then
                echo "$ldir/$file: still too small in size -- skipping"
            fi
            continue
        fi
    fi

    #   verbosity
    if [ ".$opt_v" = .yes ]; then
        echo "rotating $ldir/$file"
    fi

    #   execute prolog
    if [ ".$opt_P" != . ]; then
        if [ ".$opt_t" = .yes ]; then
            echo "$opt_P"
        fi
        eval $opt_P
        [ $? -ne 0 ] && exit $?
    fi

    #   kick away out-rotated logfile
    n=`expr $opt_n - 1`
    n=`echo dummy | awk "{ printf(\"%0${opt_p}d\", n); }" n=$n`
    if [ -f "${adir}/${file}.${n}${comp_suf}" ]; then
        #   optionally migrate away the out-rotated logfile
        if [ ".$opt_M" != . ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "$opt_M ${adir}/${file}.${n}${comp_suf}"
            fi
            eval "$opt_M ${adir}/${file}.${n}${comp_suf}"
            [ $? -ne 0 ] && exit $?
        fi
        #   finally get rid of the out-rotated logfile
        if [ ".$opt_t" = .yes ]; then
            echo "rm -f ${adir}/${file}.${n}${comp_suf}"
        fi
        rm -f ${adir}/${file}.${n}${comp_suf} || exit $?
    fi

    #   rotate already archived logfiles
    while [ $n -gt 0 ]; do
        m=$n
        n=`expr $n - 1`
        n=`echo dummy | awk "{ printf(\"%0${opt_p}d\", n); }" n=$n`
        if [ $n -eq 0 -a ".$opt_d" = .yes ]; then
            #   special case: first rotation file under delayed compression situation
            if [ ! -f "${adir}/${file}.${n}" ]; then
                continue
            fi

            #   compress file (delayed)
            if [ ".$opt_b" = .yes ]; then
                if [ ".$opt_t" = .yes ]; then
                    echo "mv ${adir}/${file}.${n} ${adir}/${file}.${m}"
                fi
                mv ${adir}/${file}.${n} ${adir}/${file}.${m} || exit $?
                if [ ".$opt_t" = .yes ]; then
                    echo "(${comp_prg} ${comp_lvl} <${adir}/${file}.${m} >${adir}/${file}.${m}${comp_suf}; rm -f ${adir}/${file}.${m}) &"
                fi
                ( ${comp_prg} ${comp_lvl} \
                      <${adir}/${file}.${m} \
                      >${adir}/${file}.${m}${comp_suf} || exit $?
                  rm -f ${adir}/${file}.${m} || exit $?
                ) </dev/null >/dev/null 2>&1 &
            else
                if [ ".$opt_t" = .yes ]; then
                    echo "${comp_prg} ${comp_lvl} <${adir}/${file}.${n} >${adir}/${file}.${m}${comp_suf}"
                fi
                ${comp_prg} ${comp_lvl} \
                    <${adir}/${file}.${n} \
                    >${adir}/${file}.${m}${comp_suf} || exit $?
                if [ ".$opt_t" = .yes ]; then
                    echo "rm -f ${adir}/${file}.${n}"
                fi
                rm -f ${adir}/${file}.${n} || exit $?
            fi

            #   fix file attributes
            if [ ".$opt_o" != . ]; then
                if [ ".$opt_t" = .yes ]; then
                    echo "chown $opt_o ${adir}/${file}.${m}${comp_suf}"
                fi
                chown $opt_o ${adir}/${file}.${m}${comp_suf} || exit $?
            fi
            if [ ".$opt_g" != . ]; then
                if [ ".$opt_t" = .yes ]; then
                    echo "chgrp $opt_g ${adir}/${file}.${m}${comp_suf}"
                fi
                chgrp $opt_g ${adir}/${file}.${m}${comp_suf} || exit $?
            fi
            if [ ".$opt_m" != . ]; then
                if [ ".$opt_t" = .yes ]; then
                    echo "chmod $opt_m ${adir}/${file}.${m}${comp_suf}"
                fi
                chmod $opt_m ${adir}/${file}.${m}${comp_suf} || exit $?
            fi
        else
            #   standard case: second and following rotation file
            if [ ! -f "${adir}/${file}.${n}${comp_suf}" ]; then
                continue
            fi
            if [ ".$opt_t" = .yes ]; then
                echo "mv ${adir}/${file}.${n}${comp_suf} ${adir}/${file}.${m}${comp_suf}"
            fi
            mv ${adir}/${file}.${n}${comp_suf} ${adir}/${file}.${m}${comp_suf} || exit $?
        fi
    done

    #   move away current logfile
    if [ ".$opt_c" = .yes ]; then
        #   approach: copy[+truncate]
        if [ ".$opt_t" = .yes ]; then
            echo "cp -p ${ldir}/${file} ${adir}/${file}.${n}"
        fi
        cp -p ${ldir}/${file} ${adir}/${file}.${n} || exit $?
        if [ ".$opt_r" = .no ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "cp /dev/null ${ldir}/${file}"
            fi
            cp /dev/null ${ldir}/${file} || exit $?
        fi
    else
        #   approach: move[+touch]
        if [ ".$opt_t" = .yes ]; then
            echo "mv ${ldir}/${file} ${adir}/${file}.${n}"
        fi
        mv ${ldir}/${file} ${adir}/${file}.${n} || exit $?
        if [ ".$opt_r" = .no ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "touch ${ldir}/${file}"
            fi
            touch ${ldir}/${file} || exit $?
            #   fix file attributes
            if [ ".$opt_o" != . ]; then
                if [ ".$opt_t" = .yes ]; then
                    echo "chown $opt_o ${ldir}/${file}"
                fi
                chown $opt_o ${ldir}/${file} || exit $?
            fi
            if [ ".$opt_g" != . ]; then
                if [ ".$opt_t" = .yes ]; then
                    echo "chgrp $opt_g ${ldir}/${file}"
                fi
                chgrp $opt_g ${ldir}/${file} || exit $?
            fi
            if [ ".$opt_m" != . ]; then
                if [ ".$opt_t" = .yes ]; then
                    echo "chmod $opt_m ${ldir}/${file}"
                fi
                chmod $opt_m ${ldir}/${file} || exit $?
            fi
        fi
    fi

    #   regular compression step
    if [ ".$opt_z" != . -a ".$opt_d" = .no ]; then
        #   compress file
        if [ ".$opt_b" = .yes ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "(${comp_prg} ${comp_lvl} <${adir}/${file}.${n} >${adir}/${file}.${n}${comp_suf}; rm -f ${adir}/${file}.${n}) &"
            fi
            ( ${comp_prg} ${comp_lvl} \
                  <${adir}/${file}.${n} \
                  >${adir}/${file}.${n}${comp_suf} || exit $?
              rm -f ${adir}/${file}.${n} || exit $?
            ) </dev/null >/dev/null 2>&1 &
        else
            if [ ".$opt_t" = .yes ]; then
                echo "${comp_prg} ${comp_lvl} <${adir}/${file}.${n} >${adir}/${file}.${n}${comp_suf}"
            fi
            ${comp_prg} ${comp_lvl} \
                <${adir}/${file}.${n} \
                >${adir}/${file}.${n}${comp_suf} || exit $?
            if [ ".$opt_t" = .yes ]; then
                echo "rm -f ${opt_a}${file}.${n}"
            fi
            rm -f ${adir}/${file}.${n} || exit $?
        fi

        #   fix file attributes
        if [ ".$opt_o" != . ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "chown $opt_o ${adir}/${file}.${n}${comp_suf}"
            fi
            chown $opt_o ${adir}/${file}.${n}${comp_suf} || exit $?
        fi
        if [ ".$opt_g" != . ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "chgrp $opt_g ${adir}/${file}.${n}${comp_suf}"
            fi
            chgrp $opt_g ${adir}/${file}.${n}${comp_suf} || exit $?
        fi
        if [ ".$opt_m" != . ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "chmod $opt_m ${adir}/${file}.${n}${comp_suf}"
            fi
            chmod $opt_m ${adir}/${file}.${n}${comp_suf} || exit $?
        fi
    fi

    #   execute epilog
    if [ ".$opt_E" != . ]; then
        if [ ".$opt_t" = .yes ]; then
            echo "$opt_E"
        fi
        eval $opt_E
        [ $? -ne 0 ] && exit $?
    fi
done