src/da.c - haproxy - Gitiles

 #include <stdio.h>

 #include <common/cfgparse.h>
 #include <common/errors.h>
 #include <proto/arg.h>
 #include <proto/log.h>
 #include <proto/proto_http.h>
 #include <proto/sample.h>
 #include <dac.h>

 static struct {
 	void *atlasimgptr;
 	char *jsonpath;
 	char *cookiename;
 	size_t cookienamelen;
 	da_atlas_t atlas;
 	da_evidence_id_t useragentid;
 	da_severity_t loglevel;
 	char separator;
 	unsigned char daset:1;
 } global_deviceatlas = {
 	.loglevel = 0,
 	.jsonpath = 0,
 	.cookiename = 0,
 	.cookienamelen = 0,
 	.useragentid = 0,
 	.daset = 0,
 	.separator = '|',
 };

 static int da_json_file(char **args, int section_type, struct proxy *curpx,
                         struct proxy *defpx, const char *file, int line,
                         char **err)
 {
 	if (*(args[1]) == 0) {
 		memprintf(err, "deviceatlas json file : expects a json path.\n");
 		return -1;
 	}
 	global_deviceatlas.jsonpath = strdup(args[1]);
 	return 0;
 }

 static int da_log_level(char **args, int section_type, struct proxy *curpx,
                         struct proxy *defpx, const char *file, int line,
                         char **err)
 {
 	int loglevel;
 	if (*(args[1]) == 0) {
 		memprintf(err, "deviceatlas log level : expects an integer argument.\n");
 		return -1;
 	}

 	loglevel = atol(args[1]);
 	if (loglevel < 0 || loglevel > 3) {
 		memprintf(err, "deviceatlas log level : expects a log level between 0 and 3, %s given.\n", args[1]);
 	} else {
 		global_deviceatlas.loglevel = (da_severity_t)loglevel;
 	}

 	return 0;
 }

 static int da_property_separator(char **args, int section_type, struct proxy *curpx,
                                  struct proxy *defpx, const char *file, int line,
                                  char **err)
 {
 	if (*(args[1]) == 0) {
 		memprintf(err, "deviceatlas property separator : expects a character argument.\n");
 		return -1;
 	}
 	global_deviceatlas.separator = *args[1];
 	return 0;
 }

 static int da_properties_cookie(char **args, int section_type, struct proxy *curpx,
                           struct proxy *defpx, const char *file, int line,
                           char **err)
 {
 	if (*(args[1]) == 0) {
 		memprintf(err, "deviceatlas cookie name : expects a string argument.\n");
 		return -1;
 	} else {
 		global_deviceatlas.cookiename = strdup(args[1]);
 	}
 	global_deviceatlas.cookienamelen = strlen(global_deviceatlas.cookiename);
 	return 0;
 }

 static size_t da_haproxy_read(void *ctx, size_t len, char *buf)
 {
 	return fread(buf, 1, len, ctx);
 }

 static da_status_t da_haproxy_seek(void *ctx, off_t off)
 {
 	return fseek(ctx, off, SEEK_SET) != -1 ? DA_OK : DA_SYS;
 }

 static void da_haproxy_log(da_severity_t severity, da_status_t status,
 	const char *fmt, va_list args)
 {
 	if (global_deviceatlas.loglevel && severity <= global_deviceatlas.loglevel) {
 		char logbuf[256];
 		vsnprintf(logbuf, sizeof(logbuf), fmt, args);
 		ha_warning("deviceatlas : %s.\n", logbuf);
 	}
 }

 #define	DA_COOKIENAME_DEFAULT		"DAPROPS"

 /*
  * module init / deinit functions. Returns 0 if OK, or a combination of ERR_*.
  */
 static int init_deviceatlas(void)
 {
 	int err_code = 0;

 	if (global_deviceatlas.jsonpath != 0) {
 		FILE *jsonp;
 		da_property_decl_t extraprops[] = {{0, 0}};
 		size_t atlasimglen;
 		da_status_t status;

 		if (global.nbthread > 1) {
 			ha_alert("deviceatlas: multithreading is not supported for now.\n");
 			err_code |= ERR_ALERT | ERR_FATAL;
 			goto out;
 		}

 		jsonp = fopen(global_deviceatlas.jsonpath, "r");
 		if (jsonp == 0) {
 			ha_alert("deviceatlas : '%s' json file has invalid path or is not readable.\n",
 				 global_deviceatlas.jsonpath);
 			err_code |= ERR_ALERT | ERR_FATAL;
 			goto out;
 		}

 		da_init();
 		da_seterrorfunc(da_haproxy_log);
 		status = da_atlas_compile(jsonp, da_haproxy_read, da_haproxy_seek,
 			&global_deviceatlas.atlasimgptr, &atlasimglen);
 		fclose(jsonp);
 		if (status != DA_OK) {
 			ha_alert("deviceatlas : '%s' json file is invalid.\n",
 				 global_deviceatlas.jsonpath);
 			err_code |= ERR_ALERT | ERR_FATAL;
 			goto out;
 		}

 		status = da_atlas_open(&global_deviceatlas.atlas, extraprops,
 			global_deviceatlas.atlasimgptr, atlasimglen);

 		if (status != DA_OK) {
 			ha_alert("deviceatlas : data could not be compiled.\n");
 			err_code |= ERR_ALERT | ERR_FATAL;
 			goto out;
 		}

 		if (global_deviceatlas.cookiename == 0) {
 			global_deviceatlas.cookiename = strdup(DA_COOKIENAME_DEFAULT);
 			global_deviceatlas.cookienamelen = strlen(global_deviceatlas.cookiename);
 		}

 		global_deviceatlas.useragentid = da_atlas_header_evidence_id(&global_deviceatlas.atlas,
 			"user-agent");
 		global_deviceatlas.daset = 1;

 		fprintf(stdout, "Deviceatlas module loaded.\n");
 	}

 out:
 	return err_code;
 }

 static void deinit_deviceatlas(void)
 {
 	if (global_deviceatlas.jsonpath != 0) {
 		free(global_deviceatlas.jsonpath);
 	}

 	if (global_deviceatlas.daset == 1) {
 		free(global_deviceatlas.cookiename);
 		da_atlas_close(&global_deviceatlas.atlas);
 		free(global_deviceatlas.atlasimgptr);
 	}

 	da_fini();
 }

 static int da_haproxy(const struct arg *args, struct sample *smp, da_deviceinfo_t *devinfo)
 {
 	struct chunk *tmp;
 	da_propid_t prop, *pprop;
 	da_status_t status;
 	da_type_t proptype;
 	const char *propname;
 	int i;

 	tmp = get_trash_chunk();
 	chunk_reset(tmp);

 	propname = (const char *)args[0].data.str.str;
 	i = 0;

 	for (; propname != 0; i ++, propname = (const char *)args[i].data.str.str) {
 		status = da_atlas_getpropid(&global_deviceatlas.atlas,
 			propname, &prop);
 		if (status != DA_OK) {
 			chunk_appendf(tmp, "%c", global_deviceatlas.separator);
 			continue;
 		}
 		pprop = &prop;
 		da_atlas_getproptype(&global_deviceatlas.atlas, *pprop, &proptype);

 		switch (proptype) {
 			case DA_TYPE_BOOLEAN: {
 				bool val;
 				status = da_getpropboolean(devinfo, *pprop, &val);
 				if (status == DA_OK) {
 					chunk_appendf(tmp, "%d", val);
 				}
 				break;
 			}
 			case DA_TYPE_INTEGER:
 			case DA_TYPE_NUMBER: {
 				long val;
 				status = da_getpropinteger(devinfo, *pprop, &val);
 				if (status == DA_OK) {
 					chunk_appendf(tmp, "%ld", val);
 				}
 				break;
 			}
 			case DA_TYPE_STRING: {
 				const char *val;
 				status = da_getpropstring(devinfo, *pprop, &val);
 				if (status == DA_OK) {
 					chunk_appendf(tmp, "%s", val);
 				}
 				break;
 		        }
 		    default:
 			break;
 		}

 		chunk_appendf(tmp, "%c", global_deviceatlas.separator);
 	}

 	da_close(devinfo);

 	if (tmp->len) {
 		--tmp->len;
 		tmp->str[tmp->len] = 0;
 	}

 	smp->data.u.str.str = tmp->str;
 	smp->data.u.str.len = tmp->len;

 	return 1;
 }

 static int da_haproxy_conv(const struct arg *args, struct sample *smp, void *private)
 {
 	da_deviceinfo_t devinfo;
 	da_status_t status;
 	const char *useragent;
 	char useragentbuf[1024] = { 0 };
 	int i;

 	if (global_deviceatlas.daset == 0 || smp->data.u.str.len == 0) {
 		return 1;
 	}

 	i = smp->data.u.str.len > sizeof(useragentbuf) ? sizeof(useragentbuf) : smp->data.u.str.len;
 	memcpy(useragentbuf, smp->data.u.str.str, i - 1);
 	useragentbuf[i - 1] = 0;

 	useragent = (const char *)useragentbuf;

 	status = da_search(&global_deviceatlas.atlas, &devinfo,
 		global_deviceatlas.useragentid, useragent, 0);

 	return status != DA_OK ? 0 : da_haproxy(args, smp, &devinfo);
 }

 #define DA_MAX_HEADERS       24

 static int da_haproxy_fetch(const struct arg *args, struct sample *smp, const char *kw, void *private)
 {
 	struct hdr_idx *hidx;
 	struct hdr_ctx hctx;
 	const struct http_msg *hmsg;
 	da_evidence_t ev[DA_MAX_HEADERS];
 	da_deviceinfo_t devinfo;
 	da_status_t status;
 	char vbuf[DA_MAX_HEADERS][1024] = {{ 0 }};
 	int i, nbh = 0;

 	if (global_deviceatlas.daset == 0) {
 		return 1;
 	}

 	CHECK_HTTP_MESSAGE_FIRST();
 	smp->data.type = SMP_T_STR;

 	/**
 	 * Here we go through the whole list of headers from start
 	 * they will be filtered via the DeviceAtlas API itself
 	 */
 	hctx.idx = 0;
 	hidx = &smp->strm->txn->hdr_idx;
 	hmsg = &smp->strm->txn->req;

 	while (http_find_next_header(hmsg->chn->buf->p, hidx, &hctx) == 1 &&
 	        nbh < DA_MAX_HEADERS) {
 		char *pval;
 		size_t vlen;
 		da_evidence_id_t evid = -1;
 		char hbuf[24] = { 0 };

 		/* The HTTP headers used by the DeviceAtlas API are not longer */
 		if (hctx.del >= sizeof(hbuf) || hctx.del <= 0 || hctx.vlen <= 0) {
 			continue;
 		}

 		vlen = hctx.vlen;
 		memcpy(hbuf, hctx.line, hctx.del);
 		hbuf[hctx.del] = 0;
 		pval = (hctx.line + hctx.val);

 		if (strcmp(hbuf, "Accept-Language") == 0) {
 			evid = da_atlas_accept_language_evidence_id(&global_deviceatlas.
 				atlas);
 		} else if (strcmp(hbuf, "Cookie") == 0) {
 			char *p, *eval;
 			int pl;

 			eval = pval + hctx.vlen;
 			/**
 			 * The cookie value, if it exists, is located between the current header's
 			 * value position and the next one
 			 */
 			if (extract_cookie_value(pval, eval, global_deviceatlas.cookiename,
 				global_deviceatlas.cookienamelen, 1, &p, &pl) == NULL) {
 				continue;
 			}

 			vlen = (size_t)pl;
 			pval = p;
 			evid = da_atlas_clientprop_evidence_id(&global_deviceatlas.atlas);
 		} else {
 			evid = da_atlas_header_evidence_id(&global_deviceatlas.atlas,
 				hbuf);
 		}

 		if (evid == -1) {
 			continue;
 		}

 		i = vlen > sizeof(vbuf[nbh]) ? sizeof(vbuf[nbh]) : vlen;
 		memcpy(vbuf[nbh], pval, i - 1);
 		vbuf[nbh][i - 1] = 0;
 		ev[nbh].key = evid;
 		ev[nbh].value = vbuf[nbh];
 		ev[nbh].value[vlen] = 0;
 		++ nbh;
 	}

 	status = da_searchv(&global_deviceatlas.atlas, &devinfo,
 			ev, nbh);

 	return status != DA_OK ? 0 : da_haproxy(args, smp, &devinfo);
 }

 static struct cfg_kw_list dacfg_kws = {{ }, {
 	{ CFG_GLOBAL, "deviceatlas-json-file",	  da_json_file },
 	{ CFG_GLOBAL, "deviceatlas-log-level",	  da_log_level },
 	{ CFG_GLOBAL, "deviceatlas-property-separator", da_property_separator },
 	{ CFG_GLOBAL, "deviceatlas-properties-cookie", da_properties_cookie },
 	{ 0, NULL, NULL },
 }};

 /* Note: must not be declared <const> as its list will be overwritten */
 static struct sample_fetch_kw_list fetch_kws = {ILH, {
 	{ "da-csv-fetch", da_haproxy_fetch, ARG12(1,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
 	{ NULL, NULL, 0, 0, 0 },
 }};

 /* Note: must not be declared <const> as its list will be overwritten */
 static struct sample_conv_kw_list conv_kws = {ILH, {
 	{ "da-csv-conv", da_haproxy_conv, ARG12(1,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR), NULL, SMP_T_STR, SMP_T_STR },
 	{ NULL, NULL, 0, 0, 0 },
 }};

 __attribute__((constructor))
 static void __da_init(void)
 {
 	/* register sample fetch and format conversion keywords */
 	sample_register_fetches(&fetch_kws);
 	sample_register_convs(&conv_kws);
 	cfg_register_keywords(&dacfg_kws);
 	hap_register_build_opts("Built with DeviceAtlas support.", 0);
 	hap_register_post_check(init_deviceatlas);
 	hap_register_post_deinit(deinit_deviceatlas);
 }
	#include <stdio.h>

	#include <common/cfgparse.h>
	#include <common/errors.h>
	#include <proto/arg.h>
	#include <proto/log.h>
	#include <proto/proto_http.h>
	#include <proto/sample.h>
	#include <dac.h>

	static struct {
	void *atlasimgptr;
	char *jsonpath;
	char *cookiename;
	size_t cookienamelen;
	da_atlas_t atlas;
	da_evidence_id_t useragentid;
	da_severity_t loglevel;
	char separator;
	unsigned char daset:1;
	} global_deviceatlas = {
	.loglevel = 0,
	.jsonpath = 0,
	.cookiename = 0,
	.cookienamelen = 0,
	.useragentid = 0,
	.daset = 0,
	.separator = '\|',
	};

	static int da_json_file(char *args, int section_type, struct proxy curpx,
	struct proxy defpx, const char file, int line,
	char **err)
	{
	if (*(args[1]) == 0) {
	memprintf(err, "deviceatlas json file : expects a json path.\n");
	return -1;
	}
	global_deviceatlas.jsonpath = strdup(args[1]);
	return 0;
	}

	static int da_log_level(char *args, int section_type, struct proxy curpx,
	struct proxy defpx, const char file, int line,
	char **err)
	{
	int loglevel;
	if (*(args[1]) == 0) {
	memprintf(err, "deviceatlas log level : expects an integer argument.\n");
	return -1;
	}

	loglevel = atol(args[1]);
	if (loglevel < 0 \|\| loglevel > 3) {
	memprintf(err, "deviceatlas log level : expects a log level between 0 and 3, %s given.\n", args[1]);
	} else {
	global_deviceatlas.loglevel = (da_severity_t)loglevel;
	}

	return 0;
	}

	static int da_property_separator(char *args, int section_type, struct proxy curpx,
	struct proxy defpx, const char file, int line,
	char **err)
	{
	if (*(args[1]) == 0) {
	memprintf(err, "deviceatlas property separator : expects a character argument.\n");
	return -1;
	}
	global_deviceatlas.separator = *args[1];
	return 0;
	}

	static int da_properties_cookie(char *args, int section_type, struct proxy curpx,
	struct proxy defpx, const char file, int line,
	char **err)
	{
	if (*(args[1]) == 0) {
	memprintf(err, "deviceatlas cookie name : expects a string argument.\n");
	return -1;
	} else {
	global_deviceatlas.cookiename = strdup(args[1]);
	}
	global_deviceatlas.cookienamelen = strlen(global_deviceatlas.cookiename);
	return 0;
	}

	static size_t da_haproxy_read(void ctx, size_t len, char buf)
	{
	return fread(buf, 1, len, ctx);
	}

	static da_status_t da_haproxy_seek(void *ctx, off_t off)
	{
	return fseek(ctx, off, SEEK_SET) != -1 ? DA_OK : DA_SYS;
	}

	static void da_haproxy_log(da_severity_t severity, da_status_t status,
	const char *fmt, va_list args)
	{
	if (global_deviceatlas.loglevel && severity <= global_deviceatlas.loglevel) {
	char logbuf[256];
	vsnprintf(logbuf, sizeof(logbuf), fmt, args);
	ha_warning("deviceatlas : %s.\n", logbuf);
	}
	}

	#define DA_COOKIENAME_DEFAULT "DAPROPS"

	/*
	* module init / deinit functions. Returns 0 if OK, or a combination of ERR_*.
	*/
	static int init_deviceatlas(void)
	{
	int err_code = 0;

	if (global_deviceatlas.jsonpath != 0) {
	FILE *jsonp;
	da_property_decl_t extraprops[] = {{0, 0}};
	size_t atlasimglen;
	da_status_t status;

	if (global.nbthread > 1) {
	ha_alert("deviceatlas: multithreading is not supported for now.\n");
	err_code \|= ERR_ALERT \| ERR_FATAL;
	goto out;
	}

	jsonp = fopen(global_deviceatlas.jsonpath, "r");
	if (jsonp == 0) {
	ha_alert("deviceatlas : '%s' json file has invalid path or is not readable.\n",
	global_deviceatlas.jsonpath);
	err_code \|= ERR_ALERT \| ERR_FATAL;
	goto out;
	}

	da_init();
	da_seterrorfunc(da_haproxy_log);
	status = da_atlas_compile(jsonp, da_haproxy_read, da_haproxy_seek,
	&global_deviceatlas.atlasimgptr, &atlasimglen);
	fclose(jsonp);
	if (status != DA_OK) {
	ha_alert("deviceatlas : '%s' json file is invalid.\n",
	global_deviceatlas.jsonpath);
	err_code \|= ERR_ALERT \| ERR_FATAL;
	goto out;
	}

	status = da_atlas_open(&global_deviceatlas.atlas, extraprops,
	global_deviceatlas.atlasimgptr, atlasimglen);

	if (status != DA_OK) {
	ha_alert("deviceatlas : data could not be compiled.\n");
	err_code \|= ERR_ALERT \| ERR_FATAL;
	goto out;
	}

	if (global_deviceatlas.cookiename == 0) {
	global_deviceatlas.cookiename = strdup(DA_COOKIENAME_DEFAULT);
	global_deviceatlas.cookienamelen = strlen(global_deviceatlas.cookiename);
	}

	global_deviceatlas.useragentid = da_atlas_header_evidence_id(&global_deviceatlas.atlas,
	"user-agent");
	global_deviceatlas.daset = 1;

	fprintf(stdout, "Deviceatlas module loaded.\n");
	}

	out:
	return err_code;
	}

	static void deinit_deviceatlas(void)
	{
	if (global_deviceatlas.jsonpath != 0) {
	free(global_deviceatlas.jsonpath);
	}

	if (global_deviceatlas.daset == 1) {
	free(global_deviceatlas.cookiename);
	da_atlas_close(&global_deviceatlas.atlas);
	free(global_deviceatlas.atlasimgptr);
	}

	da_fini();
	}

	static int da_haproxy(const struct arg args, struct sample smp, da_deviceinfo_t *devinfo)
	{
	struct chunk *tmp;
	da_propid_t prop, *pprop;
	da_status_t status;
	da_type_t proptype;
	const char *propname;
	int i;

	tmp = get_trash_chunk();
	chunk_reset(tmp);

	propname = (const char *)args[0].data.str.str;
	i = 0;

	for (; propname != 0; i ++, propname = (const char *)args[i].data.str.str) {
	status = da_atlas_getpropid(&global_deviceatlas.atlas,
	propname, &prop);
	if (status != DA_OK) {
	chunk_appendf(tmp, "%c", global_deviceatlas.separator);
	continue;
	}
	pprop = &prop;
	da_atlas_getproptype(&global_deviceatlas.atlas, *pprop, &proptype);

	switch (proptype) {
	case DA_TYPE_BOOLEAN: {
	bool val;
	status = da_getpropboolean(devinfo, *pprop, &val);
	if (status == DA_OK) {
	chunk_appendf(tmp, "%d", val);
	}
	break;
	}
	case DA_TYPE_INTEGER:
	case DA_TYPE_NUMBER: {
	long val;
	status = da_getpropinteger(devinfo, *pprop, &val);
	if (status == DA_OK) {
	chunk_appendf(tmp, "%ld", val);
	}
	break;
	}
	case DA_TYPE_STRING: {
	const char *val;
	status = da_getpropstring(devinfo, *pprop, &val);
	if (status == DA_OK) {
	chunk_appendf(tmp, "%s", val);
	}
	break;
	}
	default:
	break;
	}

	chunk_appendf(tmp, "%c", global_deviceatlas.separator);
	}

	da_close(devinfo);

	if (tmp->len) {
	--tmp->len;
	tmp->str[tmp->len] = 0;
	}

	smp->data.u.str.str = tmp->str;
	smp->data.u.str.len = tmp->len;

	return 1;
	}

	static int da_haproxy_conv(const struct arg args, struct sample smp, void *private)
	{
	da_deviceinfo_t devinfo;
	da_status_t status;
	const char *useragent;
	char useragentbuf[1024] = { 0 };
	int i;

	if (global_deviceatlas.daset == 0 \|\| smp->data.u.str.len == 0) {
	return 1;
	}

	i = smp->data.u.str.len > sizeof(useragentbuf) ? sizeof(useragentbuf) : smp->data.u.str.len;
	memcpy(useragentbuf, smp->data.u.str.str, i - 1);
	useragentbuf[i - 1] = 0;

	useragent = (const char *)useragentbuf;

	status = da_search(&global_deviceatlas.atlas, &devinfo,
	global_deviceatlas.useragentid, useragent, 0);

	return status != DA_OK ? 0 : da_haproxy(args, smp, &devinfo);
	}

	#define DA_MAX_HEADERS 24

	static int da_haproxy_fetch(const struct arg args, struct sample smp, const char kw, void private)
	{
	struct hdr_idx *hidx;
	struct hdr_ctx hctx;
	const struct http_msg *hmsg;
	da_evidence_t ev[DA_MAX_HEADERS];
	da_deviceinfo_t devinfo;
	da_status_t status;
	char vbuf[DA_MAX_HEADERS][1024] = {{ 0 }};
	int i, nbh = 0;

	if (global_deviceatlas.daset == 0) {
	return 1;
	}

	CHECK_HTTP_MESSAGE_FIRST();
	smp->data.type = SMP_T_STR;

	/**
	* Here we go through the whole list of headers from start
	* they will be filtered via the DeviceAtlas API itself
	*/
	hctx.idx = 0;
	hidx = &smp->strm->txn->hdr_idx;
	hmsg = &smp->strm->txn->req;

	while (http_find_next_header(hmsg->chn->buf->p, hidx, &hctx) == 1 &&
	nbh < DA_MAX_HEADERS) {
	char *pval;
	size_t vlen;
	da_evidence_id_t evid = -1;
	char hbuf[24] = { 0 };

	/* The HTTP headers used by the DeviceAtlas API are not longer */
	if (hctx.del >= sizeof(hbuf) \|\| hctx.del <= 0 \|\| hctx.vlen <= 0) {
	continue;
	}

	vlen = hctx.vlen;
	memcpy(hbuf, hctx.line, hctx.del);
	hbuf[hctx.del] = 0;
	pval = (hctx.line + hctx.val);

	if (strcmp(hbuf, "Accept-Language") == 0) {
	evid = da_atlas_accept_language_evidence_id(&global_deviceatlas.
	atlas);
	} else if (strcmp(hbuf, "Cookie") == 0) {
	char p, eval;
	int pl;

	eval = pval + hctx.vlen;
	/**
	* The cookie value, if it exists, is located between the current header's
	* value position and the next one
	*/
	if (extract_cookie_value(pval, eval, global_deviceatlas.cookiename,
	global_deviceatlas.cookienamelen, 1, &p, &pl) == NULL) {
	continue;
	}

	vlen = (size_t)pl;
	pval = p;
	evid = da_atlas_clientprop_evidence_id(&global_deviceatlas.atlas);
	} else {
	evid = da_atlas_header_evidence_id(&global_deviceatlas.atlas,
	hbuf);
	}

	if (evid == -1) {
	continue;
	}

	i = vlen > sizeof(vbuf[nbh]) ? sizeof(vbuf[nbh]) : vlen;
	memcpy(vbuf[nbh], pval, i - 1);
	vbuf[nbh][i - 1] = 0;
	ev[nbh].key = evid;
	ev[nbh].value = vbuf[nbh];
	ev[nbh].value[vlen] = 0;
	++ nbh;
	}

	status = da_searchv(&global_deviceatlas.atlas, &devinfo,
	ev, nbh);

	return status != DA_OK ? 0 : da_haproxy(args, smp, &devinfo);
	}

	static struct cfg_kw_list dacfg_kws = {{ }, {
	{ CFG_GLOBAL, "deviceatlas-json-file", da_json_file },
	{ CFG_GLOBAL, "deviceatlas-log-level", da_log_level },
	{ CFG_GLOBAL, "deviceatlas-property-separator", da_property_separator },
	{ CFG_GLOBAL, "deviceatlas-properties-cookie", da_properties_cookie },
	{ 0, NULL, NULL },
	}};

	/* Note: must not be declared <const> as its list will be overwritten */
	static struct sample_fetch_kw_list fetch_kws = {ILH, {
	{ "da-csv-fetch", da_haproxy_fetch, ARG12(1,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
	{ NULL, NULL, 0, 0, 0 },
	}};

	/* Note: must not be declared <const> as its list will be overwritten */
	static struct sample_conv_kw_list conv_kws = {ILH, {
	{ "da-csv-conv", da_haproxy_conv, ARG12(1,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR,STR), NULL, SMP_T_STR, SMP_T_STR },
	{ NULL, NULL, 0, 0, 0 },
	}};

	__attribute__((constructor))
	static void __da_init(void)
	{
	/* register sample fetch and format conversion keywords */
	sample_register_fetches(&fetch_kws);
	sample_register_convs(&conv_kws);
	cfg_register_keywords(&dacfg_kws);
	hap_register_build_opts("Built with DeviceAtlas support.", 0);
	hap_register_post_check(init_deviceatlas);
	hap_register_post_deinit(deinit_deviceatlas);
	}