GCOV - Varnish Cache


/*-
 * Copyright (c) 2010-2017 Varnish Software AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@FreeBSD.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "config.h"

#include <sys/stat.h>

#include <netinet/in.h>

#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <sys/socket.h>
#include <fnmatch.h>

#include "cache/cache.h"

#include "vrnd.h"
#include "vtcp.h"
#include "vsa.h"
#include "vtim.h"
#include "vcl.h"

#include "vcc_std_if.h"

VCL_VOID v_matchproto_(td_std_set_ip_tos)
vmod_set_ip_tos(VRT_CTX, VCL_INT tos)
{
        struct suckaddr *sa;
        int fam, itos = tos;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        AZ(SES_Get_local_addr(ctx->req->sp, &sa));
        /* Silently ignore for non-IP addresses. */
        if (VSA_Compare(sa, bogo_ip) == 0)
                return;
        fam = VSA_Get_Proto(sa);
        switch (fam) {
        case PF_INET:
                VTCP_Assert(setsockopt(ctx->req->sp->fd,
                    IPPROTO_IP, IP_TOS, &itos, sizeof(itos)));
                break;
        case PF_INET6:
                VTCP_Assert(setsockopt(ctx->req->sp->fd,
                    IPPROTO_IPV6, IPV6_TCLASS, &itos, sizeof(itos)));
                break;
        default:
                INCOMPL();
        }
}

static const char *
vmod_updown(VRT_CTX, int up, VCL_STRANDS s)
{
        unsigned u;
        char *b, *e;
        const char *p;
        int i;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        u = WS_ReserveAll(ctx->ws);
        e = b = WS_Reservation(ctx->ws);
        e += u;
        for (i = 0; i < s->n && b < e; i++) {
                p = s->p[i];
                while (p != NULL && *p != '\0' && b < e) {
                        if (up)
                                *b++ = (char)toupper(*p++);
                        else
                                *b++ = (char)tolower(*p++);
                }
        }
        if (b < e)
                *b = '\0';
        b++;
        if (b > e) {
                WS_MarkOverflow(ctx->ws);
                WS_Release(ctx->ws, 0);
                return (NULL);
        } else {
                e = b;
                b = WS_Reservation(ctx->ws);
                WS_Release(ctx->ws, e - b);
                return (b);
        }
}

VCL_STRING v_matchproto_(td_std_toupper)
vmod_toupper(VRT_CTX, VCL_STRANDS s)
{

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        return (vmod_updown(ctx, 1, s));
}

VCL_STRING v_matchproto_(td_std_tolower)
vmod_tolower(VRT_CTX, VCL_STRANDS s)
{

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        return (vmod_updown(ctx, 0, s));
}

VCL_REAL v_matchproto_(td_std_random)
vmod_random(VRT_CTX, VCL_REAL lo, VCL_REAL hi)
{
        double a;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        a = VRND_RandomTestableDouble();
        a *= hi - lo;
        a += lo;
        return (a);
}

VCL_VOID v_matchproto_(td_std_log)
vmod_log(VRT_CTX, VCL_STRANDS s)
{
        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);

        if (ctx->vsl != NULL)
                VSLbs(ctx->vsl, SLT_VCL_Log, s);
        else
                VSLs(SLT_VCL_Log, NO_VXID, s);
}

/* XXX use vsyslog() ? */
VCL_VOID v_matchproto_(td_std_syslog)
vmod_syslog(VRT_CTX, VCL_INT fac, VCL_STRANDS s)
{
        const char *p;
        uintptr_t sn;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        sn = WS_Snapshot(ctx->ws);
        p = VRT_StrandsWS(ctx->ws, NULL, s);
        if (p != NULL)
                syslog((int)fac, "%s", p);
        WS_Reset(ctx->ws, sn);
}

VCL_BOOL v_matchproto_(td_std_file_exists)
vmod_file_exists(VRT_CTX, VCL_STRING file_name)
{
        struct stat st;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        return (stat(file_name, &st) == 0);
}

VCL_VOID v_matchproto_(td_std_collect)
vmod_collect(VRT_CTX, VCL_HEADER hdr, VCL_STRING sep)
{
        struct http *hp;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        if (hdr == NULL) {
                VRT_fail(ctx, "std.collect(): header argument is NULL");
                return;
        }
        hp = VRT_selecthttp(ctx, hdr->where);
        if (hp == NULL) {
                VRT_fail(ctx, "std.collect(): header argument "
                    "cannot be used here");
                return;
        }
        http_CollectHdrSep(hp, hdr->what, sep);
}

VCL_BOOL v_matchproto_(td_std_healthy)
vmod_healthy(VRT_CTX, VCL_BACKEND be)
{
        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        CHECK_OBJ_ORNULL(be, DIRECTOR_MAGIC);
        return (VRT_Healthy(ctx, be, NULL));
}

VCL_INT v_matchproto_(td_std_port)
vmod_port(VRT_CTX, VCL_IP ip)
{
        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        if (ip == NULL)
                return (0);
        return (VSA_Port(ip));
}

VCL_VOID v_matchproto_(td_std_rollback)
vmod_rollback(VRT_CTX, VCL_HTTP hp)
{
        VRT_Rollback(ctx, hp);
}

VCL_VOID v_matchproto_(td_std_timestamp)
vmod_timestamp(VRT_CTX, VCL_STRING label)
{

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        if (label == NULL)
                return;
        if (*label == '\0')
                return;
        if (ctx->bo != NULL && ctx->req == NULL) {
                /* Called from backend vcl methods */
                CHECK_OBJ_NOTNULL(ctx->bo, BUSYOBJ_MAGIC);
                VSLb_ts_busyobj(ctx->bo, label, VTIM_real());
        } else if (ctx->req != NULL) {
                /* Called from request vcl methods */
                CHECK_OBJ(ctx->req, REQ_MAGIC);
                VSLb_ts_req(ctx->req, label, VTIM_real());
        }
}

VCL_BOOL v_matchproto_(td_std_cache_req_body)
vmod_cache_req_body(VRT_CTX, VCL_BYTES size)
{
        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        size = vmax_t(VCL_BYTES, size, 0);
        if (VRT_CacheReqBody(ctx, (size_t)size) < 0)
                return (0);
        return (1);
}

VCL_STRING v_matchproto_(td_std_strstr)
vmod_strstr(VRT_CTX, VCL_STRING s1, VCL_STRING s2)
{
        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        if (s1 == NULL || s2 == NULL)
                return (NULL);
        return (strstr(s1, s2));
}

VCL_STRING v_matchproto_(td_std_getenv)
vmod_getenv(VRT_CTX, VCL_STRING name)
{
        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        if (name == NULL || *name == '\0')
                return (NULL);
        return (getenv(name));
}

VCL_VOID v_matchproto_(td_std_late_100_continue)
vmod_late_100_continue(VRT_CTX, VCL_BOOL late)
{
        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        assert(ctx->method == VCL_MET_RECV);
        CHECK_OBJ_NOTNULL(ctx->req, REQ_MAGIC);
        if (ctx->req->want100cont)
                ctx->req->late100cont = late;
}

VCL_BOOL v_matchproto_(td_std_syntax)
vmod_syntax(VRT_CTX, VCL_REAL r)
{

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        assert(ctx->syntax == 40 || ctx->syntax == 41);
        /*
         * We need to be careful because non-integer numbers have imprecise
         * IEE754 representation (4.1 is 0x1.0666666666666p+2 = 4.09999...)
         * By scaling up and rounding, this is taken care of.
         */
        return (round(r * 10) <= ctx->syntax);
}

VCL_BOOL v_matchproto_(td_std_fnmatch)
vmod_fnmatch(VRT_CTX, VCL_STRING pattern, VCL_STRING subject,
             VCL_BOOL pathname, VCL_BOOL noescape, VCL_BOOL period)
{
        int flags = 0;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        if (pattern == NULL) {
                VRT_fail(ctx, "std.fnmatch(): pattern is NULL");
                return (0);
        }
        if (subject == NULL) {
                VRT_fail(ctx, "std.fnmatch(): subject is NULL");
                return (0);
        }

        if (pathname)
                flags |= FNM_PATHNAME;
        if (noescape)
                flags |= FNM_NOESCAPE;
        if (period)
                flags |= FNM_PERIOD;
        return (fnmatch(pattern, subject, flags) != FNM_NOMATCH);
}

static const void * const priv_task_id_ban = &priv_task_id_ban;

VCL_BOOL v_matchproto_(td_std_ban)
vmod_ban(VRT_CTX, VCL_STRING s)
{
        struct vmod_priv *priv_task;
        VCL_STRING r;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);

        r = VRT_ban_string(ctx, s);
        priv_task = VRT_priv_task_get(ctx, priv_task_id_ban);

        if (r == NULL && priv_task == NULL)
                return (1);

        if (priv_task == NULL)
                priv_task = VRT_priv_task(ctx, priv_task_id_ban);

        if (priv_task == NULL) {
                VRT_fail(ctx, "std.ban(): no priv_task (out of workspace?)");
                return (0);
        }

        /*
         * TRUST_ME: the ban error is const. We save it in the un-const priv
         * pointer, but promise to only ever return it as a (const) VCL_STRING
         */
        priv_task->priv = TRUST_ME(r);

        return (r == NULL);
}

VCL_STRING v_matchproto_(td_std_ban_error)
vmod_ban_error(VRT_CTX)
{
        struct vmod_priv *priv_task;
        VCL_STRING r;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);

        priv_task = VRT_priv_task_get(ctx, priv_task_id_ban);
        if (priv_task == NULL)
                return ("");

        r = priv_task->priv;
        if (r == NULL)
                r = "";
        return (r);
}

VCL_TIME v_matchproto_(td_std_now)
vmod_now(VRT_CTX)
{

        (void) ctx;
        return (VTIM_real());
}

VCL_DURATION v_matchproto_(td_std_timed_call)
vmod_timed_call(VRT_CTX, VCL_SUB sub)
{
        vtim_mono b;

        CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
        b = VTIM_mono();
        VRT_call(ctx, sub);
        return (VTIM_mono() - b);
}

		varnish-cache/vmod/vmod_std.c
0		/*-
1		* Copyright (c) 2010-2017 Varnish Software AS
2		* All rights reserved.
3		*
4		* Author: Poul-Henning Kamp <phk@FreeBSD.org>
5		*
6		* SPDX-License-Identifier: BSD-2-Clause
7		*
8		* Redistribution and use in source and binary forms, with or without
9		* modification, are permitted provided that the following conditions
10		* are met:
11		* 1. Redistributions of source code must retain the above copyright
12		* notice, this list of conditions and the following disclaimer.
13		* 2. Redistributions in binary form must reproduce the above copyright
14		* notice, this list of conditions and the following disclaimer in the
15		* documentation and/or other materials provided with the distribution.
16		*
17		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
21		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27		* SUCH DAMAGE.
28		*/
29
30		#include "config.h"
31
32		#include <sys/stat.h>
33
34		#include <netinet/in.h>
35
36		#include <ctype.h>
37		#include <stdlib.h>
38		#include <string.h>
39		#include <syslog.h>
40		#include <sys/socket.h>
41		#include <fnmatch.h>
42
43		#include "cache/cache.h"
44
45		#include "vrnd.h"
46		#include "vtcp.h"
47		#include "vsa.h"
48		#include "vtim.h"
49		#include "vcl.h"
50
51		#include "vcc_std_if.h"
52
53		VCL_VOID v_matchproto_(td_std_set_ip_tos)
54	80	vmod_set_ip_tos(VRT_CTX, VCL_INT tos)
55		{
56		struct suckaddr *sa;
57	80	int fam, itos = tos;
58
59	80	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
60	80	AZ(SES_Get_local_addr(ctx->req->sp, &sa));
61		/* Silently ignore for non-IP addresses. */
62	80	if (VSA_Compare(sa, bogo_ip) == 0)
63	40	return;
64	40	fam = VSA_Get_Proto(sa);
65	40	switch (fam) {
66		case PF_INET:
67	40	VTCP_Assert(setsockopt(ctx->req->sp->fd,
68		IPPROTO_IP, IP_TOS, &itos, sizeof(itos)));
69	40	break;
70		case PF_INET6:
71	0	VTCP_Assert(setsockopt(ctx->req->sp->fd,
72		IPPROTO_IPV6, IPV6_TCLASS, &itos, sizeof(itos)));
73	0	break;
74		default:
75	0	INCOMPL();
76	0	}
77	80	}
78
79		static const char *
80	480	vmod_updown(VRT_CTX, int up, VCL_STRANDS s)
81		{
82		unsigned u;
83		char b, e;
84		const char *p;
85		int i;
86
87	480	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
88	480	u = WS_ReserveAll(ctx->ws);
89	480	e = b = WS_Reservation(ctx->ws);
90	480	e += u;
91	960	for (i = 0; i < s->n && b < e; i++) {
92	480	p = s->p[i];
93	87760	while (p != NULL && *p != '\0' && b < e) {
94	87280	if (up)
95	43280	b++ = (char)toupper(p++);
96		else
97	44000	b++ = (char)tolower(p++);
98		}
99	480	}
100	480	if (b < e)
101	480	*b = '\0';
102	480	b++;
103	480	if (b > e) {
104	0	WS_MarkOverflow(ctx->ws);
105	0	WS_Release(ctx->ws, 0);
106	0	return (NULL);
107		} else {
108	480	e = b;
109	480	b = WS_Reservation(ctx->ws);
110	480	WS_Release(ctx->ws, e - b);
111	480	return (b);
112		}
113	480	}
114
115		VCL_STRING v_matchproto_(td_std_toupper)
116	160	vmod_toupper(VRT_CTX, VCL_STRANDS s)
117		{
118
119	160	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
120	160	return (vmod_updown(ctx, 1, s));
121		}
122
123		VCL_STRING v_matchproto_(td_std_tolower)
124	320	vmod_tolower(VRT_CTX, VCL_STRANDS s)
125		{
126
127	320	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
128	320	return (vmod_updown(ctx, 0, s));
129		}
130
131		VCL_REAL v_matchproto_(td_std_random)
132	200	vmod_random(VRT_CTX, VCL_REAL lo, VCL_REAL hi)
133		{
134		double a;
135
136	200	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
137	200	a = VRND_RandomTestableDouble();
138	200	a *= hi - lo;
139	200	a += lo;
140	200	return (a);
141		}
142
143		VCL_VOID v_matchproto_(td_std_log)
144	5920	vmod_log(VRT_CTX, VCL_STRANDS s)
145		{
146	5920	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
147
148	5920	if (ctx->vsl != NULL)
149	4640	VSLbs(ctx->vsl, SLT_VCL_Log, s);
150		else
151	1280	VSLs(SLT_VCL_Log, NO_VXID, s);
152	5920	}
153
154		/* XXX use vsyslog() ? */
155		VCL_VOID v_matchproto_(td_std_syslog)
156	200	vmod_syslog(VRT_CTX, VCL_INT fac, VCL_STRANDS s)
157		{
158		const char *p;
159		uintptr_t sn;
160
161	200	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
162	200	sn = WS_Snapshot(ctx->ws);
163	200	p = VRT_StrandsWS(ctx->ws, NULL, s);
164	200	if (p != NULL)
165	160	syslog((int)fac, "%s", p);
166	200	WS_Reset(ctx->ws, sn);
167	200	}
168
169		VCL_BOOL v_matchproto_(td_std_file_exists)
170	80	vmod_file_exists(VRT_CTX, VCL_STRING file_name)
171		{
172		struct stat st;
173
174	80	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
175	80	return (stat(file_name, &st) == 0);
176		}
177
178		VCL_VOID v_matchproto_(td_std_collect)
179	520	vmod_collect(VRT_CTX, VCL_HEADER hdr, VCL_STRING sep)
180		{
181		struct http *hp;
182
183	520	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
184	520	if (hdr == NULL) {
185	0	VRT_fail(ctx, "std.collect(): header argument is NULL");
186	0	return;
187		}
188	520	hp = VRT_selecthttp(ctx, hdr->where);
189	520	if (hp == NULL) {
190	40	VRT_fail(ctx, "std.collect(): header argument "
191		"cannot be used here");
192	40	return;
193		}
194	480	http_CollectHdrSep(hp, hdr->what, sep);
195	520	}
196
197		VCL_BOOL v_matchproto_(td_std_healthy)
198	1480	vmod_healthy(VRT_CTX, VCL_BACKEND be)
199		{
200	1480	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
201	1480	CHECK_OBJ_ORNULL(be, DIRECTOR_MAGIC);
202	1480	return (VRT_Healthy(ctx, be, NULL));
203		}
204
205		VCL_INT v_matchproto_(td_std_port)
206	3360	vmod_port(VRT_CTX, VCL_IP ip)
207		{
208	3360	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
209	3360	if (ip == NULL)
210	0	return (0);
211	3360	return (VSA_Port(ip));
212	3360	}
213
214		VCL_VOID v_matchproto_(td_std_rollback)
215	920	vmod_rollback(VRT_CTX, VCL_HTTP hp)
216		{
217	920	VRT_Rollback(ctx, hp);
218	920	}
219
220		VCL_VOID v_matchproto_(td_std_timestamp)
221	840	vmod_timestamp(VRT_CTX, VCL_STRING label)
222		{
223
224	840	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
225	840	if (label == NULL)
226	0	return;
227	840	if (*label == '\0')
228	0	return;
229	840	if (ctx->bo != NULL && ctx->req == NULL) {
230		/* Called from backend vcl methods */
231	40	CHECK_OBJ_NOTNULL(ctx->bo, BUSYOBJ_MAGIC);
232	40	VSLb_ts_busyobj(ctx->bo, label, VTIM_real());
233	840	} else if (ctx->req != NULL) {
234		/* Called from request vcl methods */
235	760	CHECK_OBJ(ctx->req, REQ_MAGIC);
236	760	VSLb_ts_req(ctx->req, label, VTIM_real());
237	760	}
238	840	}
239
240		VCL_BOOL v_matchproto_(td_std_cache_req_body)
241	1360	vmod_cache_req_body(VRT_CTX, VCL_BYTES size)
242		{
243	1360	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
244	1360	size = vmax_t(VCL_BYTES, size, 0);
245	1360	if (VRT_CacheReqBody(ctx, (size_t)size) < 0)
246	160	return (0);
247	1200	return (1);
248	1360	}
249
250		VCL_STRING v_matchproto_(td_std_strstr)
251	120	vmod_strstr(VRT_CTX, VCL_STRING s1, VCL_STRING s2)
252		{
253	120	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
254	120	if (s1 == NULL \|\| s2 == NULL)
255	40	return (NULL);
256	80	return (strstr(s1, s2));
257	120	}
258
259		VCL_STRING v_matchproto_(td_std_getenv)
260	120	vmod_getenv(VRT_CTX, VCL_STRING name)
261		{
262	120	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
263	120	if (name == NULL \|\| *name == '\0')
264	40	return (NULL);
265	80	return (getenv(name));
266	120	}
267
268		VCL_VOID v_matchproto_(td_std_late_100_continue)
269	200	vmod_late_100_continue(VRT_CTX, VCL_BOOL late)
270		{
271	200	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
272	200	assert(ctx->method == VCL_MET_RECV);
273	200	CHECK_OBJ_NOTNULL(ctx->req, REQ_MAGIC);
274	200	if (ctx->req->want100cont)
275	200	ctx->req->late100cont = late;
276	200	}
277
278		VCL_BOOL v_matchproto_(td_std_syntax)
279	240	vmod_syntax(VRT_CTX, VCL_REAL r)
280		{
281
282	240	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
283	240	assert(ctx->syntax == 40 \|\| ctx->syntax == 41);
284		/*
285		* We need to be careful because non-integer numbers have imprecise
286		* IEE754 representation (4.1 is 0x1.0666666666666p+2 = 4.09999...)
287		* By scaling up and rounding, this is taken care of.
288		*/
289	240	return (round(r * 10) <= ctx->syntax);
290		}
291
292		VCL_BOOL v_matchproto_(td_std_fnmatch)
293	2480	vmod_fnmatch(VRT_CTX, VCL_STRING pattern, VCL_STRING subject,
294		VCL_BOOL pathname, VCL_BOOL noescape, VCL_BOOL period)
295		{
296	2480	int flags = 0;
297
298	2480	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
299	2480	if (pattern == NULL) {
300	40	VRT_fail(ctx, "std.fnmatch(): pattern is NULL");
301	40	return (0);
302		}
303	2440	if (subject == NULL) {
304	40	VRT_fail(ctx, "std.fnmatch(): subject is NULL");
305	40	return (0);
306		}
307
308	2400	if (pathname)
309	1800	flags \|= FNM_PATHNAME;
310	2400	if (noescape)
311	600	flags \|= FNM_NOESCAPE;
312	2400	if (period)
313	600	flags \|= FNM_PERIOD;
314	2400	return (fnmatch(pattern, subject, flags) != FNM_NOMATCH);
315	2480	}
316
317		static const void * const priv_task_id_ban = &priv_task_id_ban;
318
319		VCL_BOOL v_matchproto_(td_std_ban)
320	880	vmod_ban(VRT_CTX, VCL_STRING s)
321		{
322		struct vmod_priv *priv_task;
323		VCL_STRING r;
324
325	880	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
326
327	880	r = VRT_ban_string(ctx, s);
328	880	priv_task = VRT_priv_task_get(ctx, priv_task_id_ban);
329
330	880	if (r == NULL && priv_task == NULL)
331	400	return (1);
332
333	480	if (priv_task == NULL)
334	80	priv_task = VRT_priv_task(ctx, priv_task_id_ban);
335
336	480	if (priv_task == NULL) {
337	0	VRT_fail(ctx, "std.ban(): no priv_task (out of workspace?)");
338	0	return (0);
339		}
340
341		/*
342		* TRUST_ME: the ban error is const. We save it in the un-const priv
343		* pointer, but promise to only ever return it as a (const) VCL_STRING
344		*/
345	480	priv_task->priv = TRUST_ME(r);
346
347	480	return (r == NULL);
348	880	}
349
350		VCL_STRING v_matchproto_(td_std_ban_error)
351	480	vmod_ban_error(VRT_CTX)
352		{
353		struct vmod_priv *priv_task;
354		VCL_STRING r;
355
356	480	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
357
358	480	priv_task = VRT_priv_task_get(ctx, priv_task_id_ban);
359	480	if (priv_task == NULL)
360	0	return ("");
361
362	480	r = priv_task->priv;
363	480	if (r == NULL)
364	40	r = "";
365	480	return (r);
366	480	}
367
368		VCL_TIME v_matchproto_(td_std_now)
369	80	vmod_now(VRT_CTX)
370		{
371
372	80	(void) ctx;
373	80	return (VTIM_real());
374		}
375
376		VCL_DURATION v_matchproto_(td_std_timed_call)
377	40	vmod_timed_call(VRT_CTX, VCL_SUB sub)
378		{
379		vtim_mono b;
380
381	40	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
382	40	b = VTIM_mono();
383	40	VRT_call(ctx, sub);
384	40	return (VTIM_mono() - b);
385		}