| | varnish-cache/lib/libvarnishapi/vsl_arg.c |
| 0 |
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/*- |
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* Copyright (c) 2006 Verdens Gang AS |
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* Copyright (c) 2006-2015 Varnish Software AS |
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* All rights reserved. |
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* |
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* Author: Poul-Henning Kamp <phk@phk.freebsd.dk> |
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* Author: Martin Blix Grydeland <martin@varnish-software.com> |
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* |
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* SPDX-License-Identifier: BSD-2-Clause |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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|
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#include "config.h" |
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|
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#include <ctype.h> |
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#include <limits.h> |
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#include <math.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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|
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#include "vdef.h" |
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#include "vas.h" |
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#include "miniobj.h" |
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|
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#include "vbm.h" |
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#include "vnum.h" |
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#include "vqueue.h" |
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#include "vre.h" |
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#include "vsb.h" |
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|
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#include "vapi/vsl.h" |
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|
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#include "vsl_api.h" |
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|
| 54 |
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/*-------------------------------------------------------------------- |
| 55 |
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* Look up a tag |
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* 0..255 tag number |
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* -1 no tag matches |
| 58 |
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* -2 multiple tags match |
| 59 |
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*/ |
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|
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int |
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77960 |
VSL_Name2Tag(const char *name, int l) |
| 63 |
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{ |
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int i, n; |
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|
| 66 |
77960 |
if (l == -1) |
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7400 |
l = strlen(name); |
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77960 |
n = -1; |
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3513640 |
for (i = 0; i < SLT__MAX; i++) { |
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3513000 |
if (VSL_tags[i] != NULL && |
| 71 |
3331360 |
!strncasecmp(name, VSL_tags[i], l)) { |
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78680 |
if (strlen(VSL_tags[i]) == l) { |
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|
/* Exact match */ |
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77320 |
return (i); |
| 75 |
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} |
| 76 |
1360 |
if (n == -1) |
| 77 |
160 |
n = i; |
| 78 |
|
else |
| 79 |
1200 |
n = -2; |
| 80 |
1360 |
} |
| 81 |
3435680 |
} |
| 82 |
640 |
return (n); |
| 83 |
77960 |
} |
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|
| 85 |
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int |
| 86 |
9800 |
VSL_Glob2Tags(const char *glob, int l, VSL_tagfind_f *func, void *priv) |
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{ |
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9800 |
const char *p1 = NULL; |
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9800 |
const char *p2 = NULL; |
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const char *e, *p; |
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9800 |
int i, l1 = 0, l2 = 0, r = 0; |
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|
| 93 |
9800 |
AN(glob); |
| 94 |
9800 |
if (l >= 0) |
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2440 |
e = glob + l; |
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else |
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7360 |
e = strchr(glob, '\0'); |
| 98 |
9800 |
if (glob == e) |
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80 |
return (-1); // Empty pattern cannot match |
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|
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78680 |
for (p = glob; p < e; p++) |
| 102 |
69800 |
if (*p == '*') |
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840 |
break; |
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|
| 105 |
9720 |
if (p == e) { // No wildcard |
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8880 |
i = VSL_Name2Tag(glob, l); |
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8880 |
if (i < 0) |
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360 |
return (i); |
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8520 |
if (func != NULL) |
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8520 |
(func)(i, priv); |
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8520 |
return (1); |
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} |
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|
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840 |
if (p != glob) { // Prefix match |
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560 |
p1 = glob; |
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560 |
l1 = p - p1; |
| 117 |
560 |
} |
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|
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840 |
if (p != e - 1) { // Postfix match |
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400 |
p2 = p + 1; |
| 121 |
400 |
l2 = e - p2; |
| 122 |
400 |
} |
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|
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1600 |
for (p++; p < e; p++) |
| 125 |
1000 |
if (*p == '*') |
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240 |
return (-3); // More than one wildcard |
| 127 |
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|
| 128 |
154200 |
for (i = 0; i < SLT__MAX; i++) { |
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153600 |
p = VSL_tags[i]; |
| 130 |
153600 |
if (p == NULL) |
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97800 |
continue; |
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55800 |
e = strchr(p, '\0'); |
| 133 |
55800 |
if ((e - p) - l1 < l2) |
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3920 |
continue; |
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51880 |
if (p1 != NULL && strncasecmp(p, p1, l1)) |
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37640 |
continue; |
| 137 |
14240 |
if (p2 != NULL && strncasecmp(e - l2, p2, l2)) |
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6400 |
continue; |
| 139 |
7840 |
if (func != NULL) |
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7840 |
(func)(i, priv); |
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7840 |
r++; |
| 142 |
7840 |
} |
| 143 |
600 |
if (r == 0) |
| 144 |
40 |
return (-1); |
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560 |
return (r); |
| 146 |
9800 |
} |
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|
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int |
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1920 |
VSL_List2Tags(const char *list, int l, VSL_tagfind_f *func, void *priv) |
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{ |
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const char *p, *b, *e; |
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1920 |
int r, t = 0; |
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|
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1920 |
p = list; |
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1920 |
if (l >= 0) |
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120 |
e = p + l; |
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else |
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1800 |
e = strchr(p, '\0'); |
| 159 |
4000 |
while (p < e) { |
| 160 |
3080 |
while (p < e && *p == ',') |
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640 |
p++; |
| 162 |
2440 |
if (p == e) |
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40 |
break; |
| 164 |
2400 |
b = p; |
| 165 |
15840 |
while (p < e && *p != ',') |
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13440 |
p++; |
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2400 |
r = VSL_Glob2Tags(b, p - b, func, priv); |
| 168 |
2400 |
if (r < 0) |
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320 |
return (r); |
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2080 |
t += r; |
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} |
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1600 |
if (t == 0) |
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40 |
return (-1); |
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1560 |
return (t); |
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1920 |
} |
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|
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const char *const VSLQ_grouping[VSL_g__MAX] = { |
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[VSL_g_raw] = "raw", |
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[VSL_g_vxid] = "vxid", |
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[VSL_g_request] = "request", |
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[VSL_g_session] = "session", |
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}; |
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|
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int |
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9360 |
VSLQ_Name2Grouping(const char *name, int l) |
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{ |
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int i, n; |
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|
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9360 |
AN(name); |
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9360 |
if (l == -1) |
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560 |
l = strlen(name); |
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9360 |
n = -1; |
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16640 |
for (i = 0; i < VSL_g__MAX; i++) { |
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16560 |
if (!strncasecmp(name, VSLQ_grouping[i], l)) { |
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9360 |
if (strlen(VSLQ_grouping[i]) == l) { |
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/* Exact match */ |
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9280 |
return (i); |
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} |
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80 |
if (n == -1) |
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40 |
n = i; |
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else |
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40 |
n = -2; |
| 203 |
80 |
} |
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7280 |
} |
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80 |
return (n); |
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9360 |
} |
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|
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void v_matchproto_(VSL_tagfind_f) |
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7680 |
vsl_vbm_bitset(int bit, void *priv) |
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{ |
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|
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7680 |
vbit_set((struct vbitmap *)priv, bit); |
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7680 |
} |
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|
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void v_matchproto_(VSL_tagfind_f) |
| 216 |
1680 |
vsl_vbm_bitclr(int bit, void *priv) |
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{ |
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|
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1680 |
vbit_clr((struct vbitmap *)priv, bit); |
| 220 |
1680 |
} |
| 221 |
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|
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static int |
| 223 |
1600 |
vsl_ix_arg(struct VSL_data *vsl, int opt, const char *arg) |
| 224 |
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{ |
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|
int i; |
| 226 |
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|
| 227 |
1600 |
CHECK_OBJ_NOTNULL(vsl, VSL_MAGIC); |
| 228 |
1600 |
vsl->flags |= F_SEEN_ixIX; |
| 229 |
|
|
| 230 |
3200 |
i = VSL_List2Tags(arg, -1, opt == 'x' ? vsl_vbm_bitset : vsl_vbm_bitclr, |
| 231 |
1600 |
vsl->vbm_suppress); |
| 232 |
1600 |
if (i == -1) |
| 233 |
80 |
return (vsl_diag(vsl, "-%c: \"%s\" matches zero tags", |
| 234 |
40 |
(char)opt, arg)); |
| 235 |
1560 |
else if (i == -2) |
| 236 |
80 |
return (vsl_diag(vsl, "-%c: \"%s\" is ambiguous", |
| 237 |
40 |
(char)opt, arg)); |
| 238 |
1520 |
else if (i == -3) |
| 239 |
160 |
return (vsl_diag(vsl, "-%c: Syntax error in \"%s\"", |
| 240 |
80 |
(char)opt, arg)); |
| 241 |
|
|
| 242 |
1440 |
return (1); |
| 243 |
1600 |
} |
| 244 |
|
|
| 245 |
|
static int |
| 246 |
320 |
vsl_IX_arg(struct VSL_data *vsl, int opt, const char *arg) |
| 247 |
|
{ |
| 248 |
|
int i, l, off, err; |
| 249 |
|
const char *b, *e; |
| 250 |
|
vre_t *vre; |
| 251 |
|
struct vsb vsb[1]; |
| 252 |
|
struct vslf *vslf; |
| 253 |
320 |
struct vbitmap *tags = NULL; |
| 254 |
|
char errbuf[VRE_ERROR_LEN]; |
| 255 |
|
|
| 256 |
|
|
| 257 |
320 |
CHECK_OBJ_NOTNULL(vsl, VSL_MAGIC); |
| 258 |
320 |
AN(arg); |
| 259 |
320 |
vsl->flags |= F_SEEN_ixIX; |
| 260 |
|
|
| 261 |
320 |
b = arg; |
| 262 |
320 |
e = strchr(b, ':'); |
| 263 |
320 |
if (e) { |
| 264 |
120 |
tags = vbit_new(SLT__MAX); |
| 265 |
120 |
AN(tags); |
| 266 |
120 |
l = e - b; |
| 267 |
120 |
i = VSL_List2Tags(b, l, vsl_vbm_bitset, tags); |
| 268 |
120 |
if (i < 0) |
| 269 |
120 |
vbit_destroy(tags); |
| 270 |
120 |
if (i == -1) |
| 271 |
80 |
return (vsl_diag(vsl, |
| 272 |
|
"-%c: \"%*.*s\" matches zero tags", |
| 273 |
40 |
(char)opt, l, l, b)); |
| 274 |
80 |
else if (i == -2) |
| 275 |
80 |
return (vsl_diag(vsl, |
| 276 |
|
"-%c: \"%*.*s\" is ambiguous", |
| 277 |
40 |
(char)opt, l, l, b)); |
| 278 |
40 |
else if (i <= -3) |
| 279 |
80 |
return (vsl_diag(vsl, |
| 280 |
|
"-%c: Syntax error in \"%*.*s\"", |
| 281 |
40 |
(char)opt, l, l, b)); |
| 282 |
0 |
b = e + 1; |
| 283 |
0 |
} |
| 284 |
|
|
| 285 |
200 |
vre = VRE_compile(b, vsl->C_opt ? VRE_CASELESS : 0, &err, &off, 1); |
| 286 |
200 |
if (vre == NULL) { |
| 287 |
40 |
if (tags) |
| 288 |
0 |
vbit_destroy(tags); |
| 289 |
40 |
AN(VSB_init(vsb, errbuf, sizeof errbuf)); |
| 290 |
40 |
AZ(VRE_error(vsb, err)); |
| 291 |
40 |
AZ(VSB_finish(vsb)); |
| 292 |
40 |
VSB_fini(vsb); |
| 293 |
80 |
return (vsl_diag(vsl, "-%c: Regex error at position %d (%s)", |
| 294 |
40 |
(char)opt, off, errbuf)); |
| 295 |
|
} |
| 296 |
|
|
| 297 |
160 |
ALLOC_OBJ(vslf, VSLF_MAGIC); |
| 298 |
160 |
AN(vslf); |
| 299 |
160 |
vslf->tags = tags; |
| 300 |
160 |
vslf->vre = vre; |
| 301 |
|
|
| 302 |
160 |
if (opt == 'I') |
| 303 |
80 |
VTAILQ_INSERT_TAIL(&vsl->vslf_select, vslf, list); |
| 304 |
|
else { |
| 305 |
80 |
assert(opt == 'X'); |
| 306 |
80 |
VTAILQ_INSERT_TAIL(&vsl->vslf_suppress, vslf, list); |
| 307 |
|
} |
| 308 |
|
|
| 309 |
160 |
return (1); |
| 310 |
320 |
} |
| 311 |
|
|
| 312 |
|
static int |
| 313 |
440 |
vsl_R_arg(struct VSL_data *vsl, const char *arg) |
| 314 |
|
{ |
| 315 |
440 |
char buf[32] = ""; |
| 316 |
|
char *p; |
| 317 |
|
long l; |
| 318 |
|
|
| 319 |
440 |
AN(arg); |
| 320 |
440 |
CHECK_OBJ_NOTNULL(vsl, VSL_MAGIC); |
| 321 |
|
|
| 322 |
440 |
errno = 0; |
| 323 |
440 |
l = strtol(arg, &p, 0); |
| 324 |
440 |
if ((l == LONG_MIN || l == LONG_MAX) && errno == ERANGE) |
| 325 |
0 |
return (vsl_diag(vsl, "-R: Range error")); |
| 326 |
440 |
if (l <= 0 || l > INT_MAX) |
| 327 |
120 |
return (vsl_diag(vsl, "-R: Range error")); |
| 328 |
320 |
vsl->R_opt_l = l; |
| 329 |
320 |
assert(p != arg); |
| 330 |
320 |
AN(p); |
| 331 |
320 |
if (*p == '\0') { |
| 332 |
0 |
vsl->R_opt_p = 1.0; |
| 333 |
0 |
return (1); |
| 334 |
|
} |
| 335 |
320 |
if (*p != '/' || p[1] == '\0') |
| 336 |
40 |
return (vsl_diag(vsl, "-R: Syntax error")); |
| 337 |
280 |
p++; |
| 338 |
280 |
if (strlen(p) > sizeof(buf) - 2) |
| 339 |
40 |
return (vsl_diag(vsl, "-R: Syntax error")); |
| 340 |
240 |
if (!isdigit(*p)) |
| 341 |
120 |
strcat(buf, "1"); |
| 342 |
240 |
strcat(buf, p); |
| 343 |
240 |
vsl->R_opt_p = VNUM_duration(buf); |
| 344 |
240 |
if (isnan(vsl->R_opt_p) || vsl->R_opt_p <= 0.0) |
| 345 |
160 |
return (vsl_diag(vsl, "-R: Syntax error: Invalid duration")); |
| 346 |
80 |
return (1); |
| 347 |
440 |
} |
| 348 |
|
|
| 349 |
|
int |
| 350 |
6760 |
VSL_Arg(struct VSL_data *vsl, int opt, const char *arg) |
| 351 |
|
{ |
| 352 |
|
int i; |
| 353 |
|
char *p; |
| 354 |
|
double d; |
| 355 |
|
long l; |
| 356 |
|
|
| 357 |
6760 |
CHECK_OBJ_NOTNULL(vsl, VSL_MAGIC); |
| 358 |
|
/* If first option is 'i', set all bits for suppression */ |
| 359 |
6760 |
if ((opt == 'i' || opt == 'I') && !(vsl->flags & F_SEEN_ixIX)) |
| 360 |
277560 |
for (i = 0; i < SLT__MAX; i++) |
| 361 |
277560 |
vbit_set(vsl->vbm_suppress, i); |
| 362 |
|
|
| 363 |
6760 |
switch (opt) { |
| 364 |
760 |
case 'b': vsl->b_opt = 1; return (1); |
| 365 |
3000 |
case 'c': vsl->c_opt = 1; return (1); |
| 366 |
|
case 'C': |
| 367 |
|
/* Caseless regular expressions */ |
| 368 |
80 |
vsl->C_opt = 1; |
| 369 |
80 |
return (1); |
| 370 |
|
case 'E': |
| 371 |
360 |
vsl->E_opt = 1; |
| 372 |
360 |
vsl->c_opt = 1; |
| 373 |
360 |
return (1); |
| 374 |
1600 |
case 'i': case 'x': return (vsl_ix_arg(vsl, opt, arg)); |
| 375 |
320 |
case 'I': case 'X': return (vsl_IX_arg(vsl, opt, arg)); |
| 376 |
|
case 'L': |
| 377 |
40 |
AN(arg); |
| 378 |
40 |
l = strtol(arg, &p, 0); |
| 379 |
40 |
while (isspace(*p)) |
| 380 |
0 |
p++; |
| 381 |
40 |
if (*p != '\0') |
| 382 |
0 |
return (vsl_diag(vsl, "-L: Syntax error")); |
| 383 |
40 |
if (l <= 0 || l > INT_MAX) |
| 384 |
40 |
return (vsl_diag(vsl, "-L: Range error")); |
| 385 |
0 |
vsl->L_opt = (int)l; |
| 386 |
0 |
return (1); |
| 387 |
|
case 'R': |
| 388 |
440 |
return (vsl_R_arg(vsl, arg)); |
| 389 |
|
case 'T': |
| 390 |
40 |
AN(arg); |
| 391 |
40 |
d = VNUM(arg); |
| 392 |
40 |
if (isnan(d)) |
| 393 |
0 |
return (vsl_diag(vsl, "-T: Syntax error")); |
| 394 |
40 |
if (d < 0.) |
| 395 |
0 |
return (vsl_diag(vsl, "-T: Range error")); |
| 396 |
40 |
vsl->T_opt = d; |
| 397 |
40 |
return (1); |
| 398 |
40 |
case 'v': vsl->v_opt = 1; return (1); |
| 399 |
|
default: |
| 400 |
80 |
return (0); |
| 401 |
|
} |
| 402 |
6760 |
} |