[thirdparty/squid.git] / src / HttpHdrSc.cc


/*
 * $Id$
 *
 * DEBUG: section 90    HTTP Cache Control Header
 * AUTHOR: Alex Rousskov
 *         Robert Collins (Surrogate-Control is derived from
 *         		   Cache-Control).
 *
 * SQUID Web Proxy Cache          http://www.squid-cache.org/
 * ----------------------------------------------------------
 *
 *  Squid is the result of efforts by numerous individuals from
 *  the Internet community; see the CONTRIBUTORS file for full
 *  details.   Many organizations have provided support for Squid's
 *  development; see the SPONSORS file for full details.  Squid is
 *  Copyrighted (C) 2001 by the Regents of the University of
 *  California; see the COPYRIGHT file for full details.  Squid
 *  incorporates software developed and/or copyrighted by other
 *  sources; see the CREDITS file for full details.
 *
 *  This program is 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 program 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, USA.
 *
 */

#include "squid.h"
#include "Store.h"
#include "HttpHeader.h"
#include "HttpHdrSc.h"

/* this table is used for parsing surrogate control header */
static const HttpHeaderFieldAttrs ScAttrs[SC_ENUM_END] = {
    {"no-store", (http_hdr_type)SC_NO_STORE},

    {"no-store-remote", (http_hdr_type)SC_NO_STORE_REMOTE},
    {"max-age", (http_hdr_type)SC_MAX_AGE},
    {"content", (http_hdr_type)SC_CONTENT},
    {"Other,", (http_hdr_type)SC_OTHER}	/* ',' will protect from matches */
};

HttpHeaderFieldInfo *ScFieldsInfo = NULL;

http_hdr_sc_type &operator++ (http_hdr_sc_type &aHeader)
{
    int tmp = (int)aHeader;
    aHeader = (http_hdr_sc_type)(++tmp);
    return aHeader;
}

int operator - (http_hdr_sc_type const &anSc, http_hdr_sc_type const &anSc2)
{
    return (int)anSc - (int)anSc2;
}


/* local prototypes */
static int httpHdrScParseInit(HttpHdrSc * sc, const String * str);

/* module initialization */

void
httpHdrScInitModule(void)
{
    ScFieldsInfo = httpHeaderBuildFieldsInfo(ScAttrs, SC_ENUM_END);
}

void
httpHdrScCleanModule(void)
{
    httpHeaderDestroyFieldsInfo(ScFieldsInfo, SC_ENUM_END);
    ScFieldsInfo = NULL;
}

/* implementation */

HttpHdrSc *
httpHdrScCreate(void)
{
    return new HttpHdrSc();
}

/* creates an sc object from a 0-terminating string */
HttpHdrSc *
httpHdrScParseCreate(const String * str)
{
    HttpHdrSc *sc = httpHdrScCreate();

    if (!httpHdrScParseInit(sc, str)) {
        httpHdrScDestroy(sc);
        sc = NULL;
    }

    return sc;
}

/* parses a 0-terminating string and inits sc */
static int
httpHdrScParseInit(HttpHdrSc * sc, const String * str)
{
    const char *item;
    const char *p;		/* '=' parameter */
    const char *pos = NULL;
    const char *target = NULL; /* ;foo */
    const char *temp = NULL; /* temp buffer */
    int type;
    int ilen, vlen;
    int initiallen;
    HttpHdrScTarget *sct;
    assert(sc && str);

    /* iterate through comma separated list */

    while (strListGetItem(str, ',', &item, &ilen, &pos)) {
        initiallen = ilen;
        vlen = 0;
        /* decrease ilen to still match the token for  '=' statements */

        if ((p = strchr(item, '=')) && (p - item < ilen)) {
            vlen = ilen - (++p - item);
            ilen = p - item;
        }

        /* decrease ilen to still match the token for ';' qualified non '=' statments */
        else if ((p = strchr(item, ';')) && (p - item < ilen))
            ilen = p++ - item;

        /* find type */
        type = httpHeaderIdByName(item, ilen,
                                  ScFieldsInfo, SC_ENUM_END);

        if (type < 0) {
            debugs(90, 2, "hdr sc: unknown control-directive: near '" << item << "' in '" << str << "'");
            type = SC_OTHER;
        }

        /* Is this a targeted directive? */
        /* TODO sometime: implement a strnrchr that looks at a substring */
        temp = xstrndup (item, initiallen + 1);

        if (!((target = strrchr (temp, ';')) && !strchr (target, '"') && *(target + 1) != '\0'))
            target = NULL;
        else
            ++target;

        sct = httpHdrScFindTarget (sc, target);

        if (!sct) {
            sct = httpHdrScTargetCreate (target);
            dlinkAdd(sct, &sct->node, &sc->targets);
        }

        safe_free (temp);

        if (EBIT_TEST(sct->mask, type)) {
            if (type != SC_OTHER)
                debugs(90, 2, "hdr sc: ignoring duplicate control-directive: near '" << item << "' in '" << str << "'");

            ScFieldsInfo[type].stat.repCount++;

            continue;
        }

        /* update mask */
        EBIT_SET(sct->mask, type);

        /* post-processing special cases */
        switch (type) {

        case SC_MAX_AGE:

            if (!p || !httpHeaderParseInt(p, &sct->max_age)) {
                debugs(90, 2, "sc: invalid max-age specs near '" << item << "'");
                sct->max_age = -1;
                EBIT_CLR(sct->mask, type);
            }

            if ((p = strchr (p, '+')))
                if (!httpHeaderParseInt(++p, &sct->max_stale)) {
                    debugs(90, 2, "sc: invalid max-stale specs near '" << item << "'");
                    sct->max_stale = 0;
                    /* leave the max-age alone */
                }

            break;

        case SC_CONTENT:

            if (!p || !httpHeaderParseQuotedString(p, vlen, &sct->content)) {
                debugs(90, 2, "sc: invalid content= quoted string near '" << item << "'");
                sct->content.clean();
                EBIT_CLR(sct->mask, type);
            }

        default:
            break;
        }
    }

    return sc->targets.head != NULL;
}

void
httpHdrScDestroy(HttpHdrSc * sc)
{
    assert(sc);

    if (sc->targets.head) {
        dlink_node *sct = sc->targets.head;

        while (sct) {
            HttpHdrScTarget *t = (HttpHdrScTarget *)sct->data;
            sct = sct->next;
            dlinkDelete (&t->node, &sc->targets);
            httpHdrScTargetDestroy (t);
        }
    }

    delete sc;
}

HttpHdrSc *
httpHdrScDup(const HttpHdrSc * sc)
{
    HttpHdrSc *dup;
    dlink_node *node;
    assert(sc);
    node = sc->targets.head;
    dup = httpHdrScCreate();

    while (node) {
        HttpHdrScTarget *dupsct;
        dupsct = httpHdrScTargetDup ((HttpHdrScTarget *)node->data);
        dlinkAddTail (dupsct, &dupsct->node, &dup->targets);
        node = node->next;
    }

    return dup;
}

void
httpHdrScTargetPackInto(const HttpHdrScTarget * sc, Packer * p)
{
    http_hdr_sc_type flag;
    int pcount = 0;
    assert(sc && p);

    for (flag = SC_NO_STORE; flag < SC_ENUM_END; ++flag) {
        if (EBIT_TEST(sc->mask, flag) && flag != SC_OTHER) {

            /* print option name */
            packerPrintf(p, (pcount ? ", " SQUIDSTRINGPH : SQUIDSTRINGPH),
                         SQUIDSTRINGPRINT(ScFieldsInfo[flag].name));

            /* handle options with values */

            if (flag == SC_MAX_AGE)
                packerPrintf(p, "=%d", (int) sc->max_age);

            if (flag == SC_CONTENT)
                packerPrintf(p, "=\"" SQUIDSTRINGPH "\"", SQUIDSTRINGPRINT(sc->content));

            pcount++;
        }
    }

    if (sc->target.size())
        packerPrintf (p, ";" SQUIDSTRINGPH, SQUIDSTRINGPRINT(sc->target));
}

void
httpHdrScPackInto(const HttpHdrSc * sc, Packer * p)
{
    dlink_node *node;
    assert(sc && p);
    node = sc->targets.head;

    while (node) {
        httpHdrScTargetPackInto((HttpHdrScTarget *)node->data, p);
        node = node->next;
    }
}

void
httpHdrScJoinWith(HttpHdrSc * sc, const HttpHdrSc * new_sc)
{
    assert(sc && new_sc);
#if 0
    /* RC TODO: check that both have the same target */

    if (sc->max_age < 0)
        sc->max_age = new_sc->max_age;

    /* RC TODO: copy unique missing stringlist entries */
    cc->mask |= new_cc->mask;

#endif
}

/* negative max_age will clean old max_Age setting */
void
httpHdrScSetMaxAge(HttpHdrSc * sc, char const *target, int max_age)
{
    HttpHdrScTarget *sct;
    assert(sc);
    sct = httpHdrScFindTarget (sc, target);

    if (!sct) {
        sct = httpHdrScTargetCreate (target);
        dlinkAddTail (sct, &sct->node, &sc->targets);
    }

    httpHdrScTargetSetMaxAge(sct, max_age);
}

void
httpHdrScUpdateStats(const HttpHdrSc * sc, StatHist * hist)
{
    dlink_node *sct;
    assert(sc);
    sct = sc->targets.head;

    while (sct) {
        httpHdrScTargetUpdateStats((HttpHdrScTarget *)sct->data, hist);
        sct = sct->next;
    }
}

void
httpHdrScTargetStatDumper(StoreEntry * sentry, int idx, double val, double size, int count)
{
    extern const HttpHeaderStat *dump_stat;     /* argh! */
    const int id = (int) val;
    const int valid_id = id >= 0 && id < SC_ENUM_END;
    const char *name = valid_id ? ScFieldsInfo[id].name.termedBuf() : "INVALID";

    if (count || valid_id)
        storeAppendPrintf(sentry, "%2d\t %-20s\t %5d\t %6.2f\n",
                          id, name, count, xdiv(count, dump_stat->scParsedCount));
}

void
httpHdrScStatDumper(StoreEntry * sentry, int idx, double val, double size, int count)
{
    extern const HttpHeaderStat *dump_stat;	/* argh! */
    const int id = (int) val;
    const int valid_id = id >= 0 && id < SC_ENUM_END;
    const char *name = valid_id ? ScFieldsInfo[id].name.termedBuf() : "INVALID";

    if (count || valid_id)
        storeAppendPrintf(sentry, "%2d\t %-20s\t %5d\t %6.2f\n",
                          id, name, count, xdiv(count, dump_stat->scParsedCount));
}

HttpHdrScTarget *
httpHdrScFindTarget (HttpHdrSc *sc, const char *target)
{
    dlink_node *node;
    assert (sc);
    node = sc->targets.head;

    while (node) {
        HttpHdrScTarget *sct = (HttpHdrScTarget *)node->data;

        if (target && sct->target.defined() && !strcmp (target, sct->target.termedBuf()))
            return sct;
        else if (!target && sct->target.undefined())
            return sct;

        node = node->next;
    }

    return NULL;
}

HttpHdrScTarget *
httpHdrScGetMergedTarget (HttpHdrSc *sc, const char *ourtarget)
{
    HttpHdrScTarget *sctus = httpHdrScFindTarget (sc, ourtarget);
    HttpHdrScTarget *sctgeneric = httpHdrScFindTarget (sc, NULL);

    if (sctgeneric || sctus) {
        HttpHdrScTarget *sctusable = httpHdrScTargetCreate (NULL);

        if (sctgeneric)
            httpHdrScTargetMergeWith (sctusable, sctgeneric);

        if (sctus)
            httpHdrScTargetMergeWith (sctusable, sctus);

        return sctusable;
    }

    return NULL;
}
Commit	Line	Data
43ae1d95	1
43ae1d95	2	/*
262a0e14	3	* $Id$
43ae1d95	4	*
	5	* DEBUG: section 90 HTTP Cache Control Header
	6	* AUTHOR: Alex Rousskov
	7	* Robert Collins (Surrogate-Control is derived from
	8	* Cache-Control).
	9	*
	10	* SQUID Web Proxy Cache http://www.squid-cache.org/
	11	* ----------------------------------------------------------
	12	*
	13	* Squid is the result of efforts by numerous individuals from
	14	* the Internet community; see the CONTRIBUTORS file for full
	15	* details. Many organizations have provided support for Squid's
	16	* development; see the SPONSORS file for full details. Squid is
	17	* Copyrighted (C) 2001 by the Regents of the University of
	18	* California; see the COPYRIGHT file for full details. Squid
	19	* incorporates software developed and/or copyrighted by other
	20	* sources; see the CREDITS file for full details.
	21	*
	22	* This program is free software; you can redistribute it and/or modify
	23	* it under the terms of the GNU General Public License as published by
	24	* the Free Software Foundation; either version 2 of the License, or
	25	* (at your option) any later version.
26ac0430	26	*
43ae1d95	27	* This program is distributed in the hope that it will be useful,
	28	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	29	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	30	* GNU General Public License for more details.
26ac0430	31	*
43ae1d95	32	* You should have received a copy of the GNU General Public License
	33	* along with this program; if not, write to the Free Software
	34	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
	35	*
	36	*/
	37
	38	#include "squid.h"
	39	#include "Store.h"
	40	#include "HttpHeader.h"
25b6a907	41	#include "HttpHdrSc.h"
43ae1d95	42
43ae1d95	43	/* this table is used for parsing surrogate control header */
26ac0430 AJ	44	static const HttpHeaderFieldAttrs ScAttrs[SC_ENUM_END] = {
26ac0430 AJ	45	{"no-store", (http_hdr_type)SC_NO_STORE},
43ae1d95	46
26ac0430 AJ	47	{"no-store-remote", (http_hdr_type)SC_NO_STORE_REMOTE},
	48	{"max-age", (http_hdr_type)SC_MAX_AGE},
	49	{"content", (http_hdr_type)SC_CONTENT},
	50	{"Other,", (http_hdr_type)SC_OTHER} /* ',' will protect from matches */
	51	};
43ae1d95	52
	53	HttpHeaderFieldInfo *ScFieldsInfo = NULL;
	54
	55	http_hdr_sc_type &operator++ (http_hdr_sc_type &aHeader)
	56	{
892e7ba7	57	int tmp = (int)aHeader;
892e7ba7	58	aHeader = (http_hdr_sc_type)(++tmp);
43ae1d95	59	return aHeader;
	60	}
	61
	62	int operator - (http_hdr_sc_type const &anSc, http_hdr_sc_type const &anSc2)
	63	{
	64	return (int)anSc - (int)anSc2;
	65	}
	66
	67
	68	/* local prototypes */
30abd221	69	static int httpHdrScParseInit(HttpHdrSc * sc, const String * str);
43ae1d95	70
	71	/* module initialization */
	72
	73	void
	74	httpHdrScInitModule(void)
	75	{
	76	ScFieldsInfo = httpHeaderBuildFieldsInfo(ScAttrs, SC_ENUM_END);
	77	}
	78
	79	void
	80	httpHdrScCleanModule(void)
	81	{
	82	httpHeaderDestroyFieldsInfo(ScFieldsInfo, SC_ENUM_END);
	83	ScFieldsInfo = NULL;
	84	}
	85
	86	/* implementation */
	87
	88	HttpHdrSc *
	89	httpHdrScCreate(void)
	90	{
25b6a907	91	return new HttpHdrSc();
43ae1d95	92	}
	93
	94	/* creates an sc object from a 0-terminating string */
	95	HttpHdrSc *
30abd221	96	httpHdrScParseCreate(const String * str)
43ae1d95	97	{
	98	HttpHdrSc *sc = httpHdrScCreate();
	99
	100	if (!httpHdrScParseInit(sc, str)) {
	101	httpHdrScDestroy(sc);
	102	sc = NULL;
	103	}
	104
	105	return sc;
	106	}
	107
	108	/* parses a 0-terminating string and inits sc */
	109	static int
30abd221	110	httpHdrScParseInit(HttpHdrSc * sc, const String * str)
43ae1d95	111	{
	112	const char *item;
	113	const char p; / '=' parameter */
	114	const char *pos = NULL;
	115	const char target = NULL; / ;foo */
	116	const char temp = NULL; / temp buffer */
	117	int type;
34460e19	118	int ilen, vlen;
43ae1d95	119	int initiallen;
	120	HttpHdrScTarget *sct;
	121	assert(sc && str);
	122
	123	/* iterate through comma separated list */
	124
	125	while (strListGetItem(str, ',', &item, &ilen, &pos)) {
	126	initiallen = ilen;
34460e19	127	vlen = 0;
43ae1d95	128	/* decrease ilen to still match the token for '=' statements */
43ae1d95	129
34460e19 AJ	130	if ((p = strchr(item, '=')) && (p - item < ilen)) {
	131	vlen = ilen - (++p - item);
	132	ilen = p - item;
	133	}
43ae1d95	134
	135	/* decrease ilen to still match the token for ';' qualified non '=' statments */
	136	else if ((p = strchr(item, ';')) && (p - item < ilen))
	137	ilen = p++ - item;
	138
	139	/* find type */
30abd221	140	type = httpHeaderIdByName(item, ilen,
30abd221	141	ScFieldsInfo, SC_ENUM_END);
43ae1d95	142
43ae1d95	143	if (type < 0) {
550cc09e	144	debugs(90, 2, "hdr sc: unknown control-directive: near '" << item << "' in '" << str << "'");
43ae1d95	145	type = SC_OTHER;
	146	}
	147
	148	/* Is this a targeted directive? */
	149	/* TODO sometime: implement a strnrchr that looks at a substring */
	150	temp = xstrndup (item, initiallen + 1);
	151
	152	if (!((target = strrchr (temp, ';')) && !strchr (target, '"') && *(target + 1) != '\0'))
	153	target = NULL;
	154	else
	155	++target;
	156
	157	sct = httpHdrScFindTarget (sc, target);
	158
	159	if (!sct) {
	160	sct = httpHdrScTargetCreate (target);
	161	dlinkAdd(sct, &sct->node, &sc->targets);
	162	}
	163
	164	safe_free (temp);
	165
	166	if (EBIT_TEST(sct->mask, type)) {
	167	if (type != SC_OTHER)
550cc09e	168	debugs(90, 2, "hdr sc: ignoring duplicate control-directive: near '" << item << "' in '" << str << "'");
43ae1d95	169
	170	ScFieldsInfo[type].stat.repCount++;
	171
	172	continue;
	173	}
	174
	175	/* update mask */
	176	EBIT_SET(sct->mask, type);
	177
	178	/* post-processing special cases */
	179	switch (type) {
	180
	181	case SC_MAX_AGE:
	182
	183	if (!p \|\| !httpHeaderParseInt(p, &sct->max_age)) {
bf8fe701	184	debugs(90, 2, "sc: invalid max-age specs near '" << item << "'");
43ae1d95	185	sct->max_age = -1;
	186	EBIT_CLR(sct->mask, type);
	187	}
	188
	189	if ((p = strchr (p, '+')))
	190	if (!httpHeaderParseInt(++p, &sct->max_stale)) {
bf8fe701	191	debugs(90, 2, "sc: invalid max-stale specs near '" << item << "'");
43ae1d95	192	sct->max_stale = 0;
	193	/* leave the max-age alone */
	194	}
	195
	196	break;
	197
	198	case SC_CONTENT:
	199
34460e19	200	if (!p \|\| !httpHeaderParseQuotedString(p, vlen, &sct->content)) {
bf8fe701	201	debugs(90, 2, "sc: invalid content= quoted string near '" << item << "'");
30abd221	202	sct->content.clean();
43ae1d95	203	EBIT_CLR(sct->mask, type);
	204	}
	205
	206	default:
	207	break;
	208	}
	209	}
	210
	211	return sc->targets.head != NULL;
	212	}
	213
	214	void
	215	httpHdrScDestroy(HttpHdrSc * sc)
	216	{
	217	assert(sc);
	218
	219	if (sc->targets.head) {
	220	dlink_node *sct = sc->targets.head;
	221
	222	while (sct) {
	223	HttpHdrScTarget t = (HttpHdrScTarget )sct->data;
	224	sct = sct->next;
	225	dlinkDelete (&t->node, &sc->targets);
	226	httpHdrScTargetDestroy (t);
	227	}
	228	}
	229
25b6a907	230	delete sc;
43ae1d95	231	}
	232
	233	HttpHdrSc *
	234	httpHdrScDup(const HttpHdrSc * sc)
	235	{
	236	HttpHdrSc *dup;
	237	dlink_node *node;
	238	assert(sc);
	239	node = sc->targets.head;
	240	dup = httpHdrScCreate();
	241
	242	while (node) {
	243	HttpHdrScTarget *dupsct;
	244	dupsct = httpHdrScTargetDup ((HttpHdrScTarget *)node->data);
	245	dlinkAddTail (dupsct, &dupsct->node, &dup->targets);
	246	node = node->next;
	247	}
	248
	249	return dup;
	250	}
	251
	252	void
	253	httpHdrScTargetPackInto(const HttpHdrScTarget * sc, Packer * p)
	254	{
	255	http_hdr_sc_type flag;
	256	int pcount = 0;
	257	assert(sc && p);
	258
	259	for (flag = SC_NO_STORE; flag < SC_ENUM_END; ++flag) {
	260	if (EBIT_TEST(sc->mask, flag) && flag != SC_OTHER) {
	261
	262	/* print option name */
826a1fed	263	packerPrintf(p, (pcount ? ", " SQUIDSTRINGPH : SQUIDSTRINGPH),
af6a12ee	264	SQUIDSTRINGPRINT(ScFieldsInfo[flag].name));
43ae1d95	265
	266	/* handle options with values */
	267
	268	if (flag == SC_MAX_AGE)
	269	packerPrintf(p, "=%d", (int) sc->max_age);
	270
	271	if (flag == SC_CONTENT)
826a1fed	272	packerPrintf(p, "=\"" SQUIDSTRINGPH "\"", SQUIDSTRINGPRINT(sc->content));
43ae1d95	273
	274	pcount++;
	275	}
	276	}
	277
	278	if (sc->target.size())
826a1fed	279	packerPrintf (p, ";" SQUIDSTRINGPH, SQUIDSTRINGPRINT(sc->target));
43ae1d95	280	}
	281
	282	void
	283	httpHdrScPackInto(const HttpHdrSc * sc, Packer * p)
	284	{
	285	dlink_node *node;
	286	assert(sc && p);
	287	node = sc->targets.head;
	288
	289	while (node) {
	290	httpHdrScTargetPackInto((HttpHdrScTarget *)node->data, p);
	291	node = node->next;
	292	}
	293	}
	294
	295	void
	296	httpHdrScJoinWith(HttpHdrSc * sc, const HttpHdrSc * new_sc)
	297	{
	298	assert(sc && new_sc);
	299	#if 0
	300	/* RC TODO: check that both have the same target */
	301
	302	if (sc->max_age < 0)
	303	sc->max_age = new_sc->max_age;
	304
	305	/* RC TODO: copy unique missing stringlist entries */
	306	cc->mask \|= new_cc->mask;
	307
	308	#endif
	309	}
	310
	311	/* negative max_age will clean old max_Age setting */
	312	void
	313	httpHdrScSetMaxAge(HttpHdrSc * sc, char const *target, int max_age)
	314	{
	315	HttpHdrScTarget *sct;
	316	assert(sc);
	317	sct = httpHdrScFindTarget (sc, target);
	318
	319	if (!sct) {
	320	sct = httpHdrScTargetCreate (target);
	321	dlinkAddTail (sct, &sct->node, &sc->targets);
	322	}
	323
	324	httpHdrScTargetSetMaxAge(sct, max_age);
	325	}
	326
	327	void
	328	httpHdrScUpdateStats(const HttpHdrSc * sc, StatHist * hist)
	329	{
	330	dlink_node *sct;
	331	assert(sc);
	332	sct = sc->targets.head;
	333
	334	while (sct) {
	335	httpHdrScTargetUpdateStats((HttpHdrScTarget *)sct->data, hist);
	336	sct = sct->next;
	337	}
	338	}
	339
	340	void
	341	httpHdrScTargetStatDumper(StoreEntry * sentry, int idx, double val, double size, int count)
	342	{
	343	extern const HttpHeaderStat dump_stat; / argh! */
344	const int id = (int) val;
345	const int valid_id = id >= 0 && id < SC_ENUM_END;
550cc09e	346	const char *name = valid_id ? ScFieldsInfo[id].name.termedBuf() : "INVALID";
43ae1d95	347
	348	if (count \|\| valid_id)
	349	storeAppendPrintf(sentry, "%2d\t %-20s\t %5d\t %6.2f\n",
	350	id, name, count, xdiv(count, dump_stat->scParsedCount));
	351	}
	352
	353	void
	354	httpHdrScStatDumper(StoreEntry * sentry, int idx, double val, double size, int count)
	355	{
	356	extern const HttpHeaderStat dump_stat; / argh! */
	357	const int id = (int) val;
	358	const int valid_id = id >= 0 && id < SC_ENUM_END;
550cc09e	359	const char *name = valid_id ? ScFieldsInfo[id].name.termedBuf() : "INVALID";
43ae1d95	360
	361	if (count \|\| valid_id)
	362	storeAppendPrintf(sentry, "%2d\t %-20s\t %5d\t %6.2f\n",
	363	id, name, count, xdiv(count, dump_stat->scParsedCount));
	364	}
	365
	366	HttpHdrScTarget *
	367	httpHdrScFindTarget (HttpHdrSc sc, const char target)
	368	{
	369	dlink_node *node;
	370	assert (sc);
	371	node = sc->targets.head;
	372
	373	while (node) {
	374	HttpHdrScTarget sct = (HttpHdrScTarget )node->data;
	375
550cc09e	376	if (target && sct->target.defined() && !strcmp (target, sct->target.termedBuf()))
43ae1d95	377	return sct;
550cc09e	378	else if (!target && sct->target.undefined())
43ae1d95	379	return sct;
	380
	381	node = node->next;
	382	}
	383
	384	return NULL;
	385	}
	386
	387	HttpHdrScTarget *
	388	httpHdrScGetMergedTarget (HttpHdrSc sc, const char ourtarget)
	389	{
	390	HttpHdrScTarget *sctus = httpHdrScFindTarget (sc, ourtarget);
	391	HttpHdrScTarget *sctgeneric = httpHdrScFindTarget (sc, NULL);
	392
	393	if (sctgeneric \|\| sctus) {
	394	HttpHdrScTarget *sctusable = httpHdrScTargetCreate (NULL);
	395
	396	if (sctgeneric)
	397	httpHdrScTargetMergeWith (sctusable, sctgeneric);
	398
	399	if (sctus)
	400	httpHdrScTargetMergeWith (sctusable, sctus);
	401
	402	return sctusable;
	403	}
	404
	405	return NULL;
	406	}