MINOR: pattern: store configuration reference for each acl or map pattern.

This patch permit to add reference for each pattern reference. This is
useful to identify the acl listed.
diff --git a/src/acl.c b/src/acl.c
index 4969155..be88e9e 100644
--- a/src/acl.c
+++ b/src/acl.c
@@ -131,7 +131,8 @@
  * Right now, the only accepted syntax is :
  * <subject> [<value>...]
  */
-struct acl_expr *parse_acl_expr(const char **args, char **err, struct arg_list *al)
+struct acl_expr *parse_acl_expr(const char **args, char **err, struct arg_list *al,
+                                const char *file, int line)
 {
 	__label__ out_return, out_free_expr;
 	struct acl_expr *expr;
@@ -450,7 +451,11 @@
 				goto out_free_expr;
 			}
 
-			if (!pattern_read_from_file(&expr->pat, PAT_REF_ACL, args[1], patflags | PAT_F_FROM_FILE, err))
+			/* Create displayed reference */
+			snprintf(trash.str, trash.size, "acl(s) loaded from file '%s'", args[1]);
+			trash.str[trash.size - 1] = '\0';
+
+			if (!pattern_read_from_file(&expr->pat, PAT_REF_ACL, args[1], patflags | PAT_F_FROM_FILE, err, trash.str))
 				goto out_free_expr;
 			is_loaded = 1;
 			args++;
@@ -497,8 +502,12 @@
 		goto out_free_expr;
 	}
 
+	/* Create displayed reference */
+	snprintf(trash.str, trash.size, "acl '%s' file '%s' line %d", expr->kw, file, line);
+	trash.str[trash.size - 1] = '\0';
+
 	/* Create new patern reference. */
-	ref = pat_ref_newid(unique_id, PAT_REF_ACL);
+	ref = pat_ref_newid(unique_id, trash.str, PAT_REF_ACL);
 	if (!ref) {
 		memprintf(err, "memory error");
 		goto out_free_expr;
@@ -677,7 +686,8 @@
  *
  * args syntax: <aclname> <acl_expr>
  */
-struct acl *parse_acl(const char **args, struct list *known_acl, char **err, struct arg_list *al)
+struct acl *parse_acl(const char **args, struct list *known_acl, char **err, struct arg_list *al,
+                      const char *file, int line)
 {
 	__label__ out_return, out_free_acl_expr, out_free_name;
 	struct acl *cur_acl;
@@ -690,7 +700,7 @@
 		goto out_return;
 	}
 
-	acl_expr = parse_acl_expr(args + 1, err, al);
+	acl_expr = parse_acl_expr(args + 1, err, al, file, line);
 	if (!acl_expr) {
 		/* parse_acl_expr will have filled <err> here */
 		goto out_return;
@@ -785,7 +795,8 @@
  * to report missing dependencies.
  */
 static struct acl *find_acl_default(const char *acl_name, struct list *known_acl,
-                                    char **err, struct arg_list *al)
+                                    char **err, struct arg_list *al,
+                                    const char *file, int line)
 {
 	__label__ out_return, out_free_acl_expr, out_free_name;
 	struct acl *cur_acl;
@@ -803,7 +814,7 @@
 		return NULL;
 	}
 
-	acl_expr = parse_acl_expr((const char **)default_acl_list[index].expr, err, al);
+	acl_expr = parse_acl_expr((const char **)default_acl_list[index].expr, err, al, file, line);
 	if (!acl_expr) {
 		/* parse_acl_expr must have filled err here */
 		goto out_return;
@@ -864,7 +875,8 @@
  * for unresolved dependencies.
  */
 struct acl_cond *parse_acl_cond(const char **args, struct list *known_acl,
-                                enum acl_cond_pol pol, char **err, struct arg_list *al)
+                                enum acl_cond_pol pol, char **err, struct arg_list *al,
+                                const char *file, int line)
 {
 	__label__ out_return, out_free_suite, out_free_term;
 	int arg, neg;
@@ -937,7 +949,7 @@
 			args_new[0] = "";
 			memcpy(args_new + 1, args + arg + 1, (arg_end - arg) * sizeof(*args_new));
 			args_new[arg_end - arg] = "";
-			cur_acl = parse_acl(args_new, known_acl, err, al);
+			cur_acl = parse_acl(args_new, known_acl, err, al, file, line);
 			free(args_new);
 
 			if (!cur_acl) {
@@ -955,7 +967,7 @@
 			 */
 			cur_acl = find_acl_by_name(word, known_acl);
 			if (cur_acl == NULL) {
-				cur_acl = find_acl_default(word, known_acl, err, al);
+				cur_acl = find_acl_default(word, known_acl, err, al, file, line);
 				if (cur_acl == NULL) {
 					/* note that find_acl_default() must have filled <err> here */
 					goto out_free_suite;
@@ -1039,7 +1051,7 @@
 		return NULL;
 	}
 
-	cond = parse_acl_cond(args, &px->acl, pol, err, &px->conf.args);
+	cond = parse_acl_cond(args, &px->acl, pol, err, &px->conf.args, file, line);
 	if (!cond) {
 		/* note that parse_acl_cond must have filled <err> here */
 		return NULL;
diff --git a/src/cfgparse.c b/src/cfgparse.c
index 10dfa89..2aa2ff9 100644
--- a/src/cfgparse.c
+++ b/src/cfgparse.c
@@ -2381,7 +2381,7 @@
 			err_code |= ERR_ALERT | ERR_FATAL;
 		}
 
-		if (parse_acl((const char **)args + 1, &curproxy->acl, &errmsg, &curproxy->conf.args) == NULL) {
+		if (parse_acl((const char **)args + 1, &curproxy->acl, &errmsg, &curproxy->conf.args, file, linenum) == NULL) {
 			Alert("parsing [%s:%d] : error detected while parsing ACL '%s' : %s.\n",
 			      file, linenum, args[1], errmsg);
 			err_code |= ERR_ALERT | ERR_FATAL;
diff --git a/src/dumpstats.c b/src/dumpstats.c
index f6768c9..4007fc4 100644
--- a/src/dumpstats.c
+++ b/src/dumpstats.c
@@ -4762,7 +4762,7 @@
 		 * later and restart at the state "STAT_ST_INIT".
 		 */
 		chunk_reset(&trash);
-		chunk_appendf(&trash, "# id (name)\n");
+		chunk_appendf(&trash, "# id (name) description\n");
 		if (bi_putchk(si->ib, &trash) == -1)
 			return 0;
 
@@ -4784,8 +4784,9 @@
 			/* Build messages. If the reference is used by another category than
 			 * the listed categorie, display the information in the massage.
 			 */
-			chunk_appendf(&trash, "%d (%s)", appctx->ctx.map.ref->unique_id,
-			              appctx->ctx.map.ref->reference ? appctx->ctx.map.ref->reference : "");
+			chunk_appendf(&trash, "%d (%s) %s", appctx->ctx.map.ref->unique_id,
+			              appctx->ctx.map.ref->reference ? appctx->ctx.map.ref->reference : "",
+			              appctx->ctx.map.ref->display);
 
 			if (appctx->ctx.map.display_flags & PAT_REF_MAP) {
 				if (appctx->ctx.map.ref->flags & PAT_REF_ACL)
diff --git a/src/map.c b/src/map.c
index fced0ed..141cdf4 100644
--- a/src/map.c
+++ b/src/map.c
@@ -229,7 +229,9 @@
 	 */
 	ref = pat_ref_lookup(arg[0].data.str.str);
 	if (!ref) {
-		ref = pat_ref_new(arg[0].data.str.str, PAT_REF_MAP);
+		snprintf(trash.str, trash.size, "map(s) loaded from file '%s'", arg[0].data.str.str);
+		trash.str[trash.size - 1] = '\0';
+		ref = pat_ref_new(arg[0].data.str.str, trash.str, PAT_REF_MAP);
 		if (!ref) {
 			memprintf(err, "out of memory");
 			return 0;
diff --git a/src/pattern.c b/src/pattern.c
index 0850f2f..da50f73 100644
--- a/src/pattern.c
+++ b/src/pattern.c
@@ -1678,7 +1678,7 @@
  * before calling this function. If the fucntion fail, it return NULL,
  * else return new struct pat_ref.
  */
-struct pat_ref *pat_ref_new(const char *reference, unsigned int flags)
+struct pat_ref *pat_ref_new(const char *reference, const char *display, unsigned int flags)
 {
 	struct pat_ref *ref;
 
@@ -1686,8 +1686,19 @@
 	if (!ref)
 		return NULL;
 
+	if (display) {
+		ref->display = strdup(display);
+		if (!ref->display) {
+			free(ref);
+			return NULL;
+		}
+	}
+	else
+		ref->display = NULL;
+
 	ref->reference = strdup(reference);
 	if (!ref->reference) {
+		free(ref->display);
 		free(ref);
 		return NULL;
 	}
@@ -1710,7 +1721,7 @@
  * or pat_ref_lookupid before calling this function. If the function
  * fail, it return NULL, else return new struct pat_ref.
  */
-struct pat_ref *pat_ref_newid(int unique_id, unsigned int flags)
+struct pat_ref *pat_ref_newid(int unique_id, const char *display, unsigned int flags)
 {
 	struct pat_ref *ref;
 
@@ -1718,6 +1729,16 @@
 	if (!ref)
 		return NULL;
 
+	if (display) {
+		ref->display = strdup(display);
+		if (!ref->display) {
+			free(ref);
+			return NULL;
+		}
+	}
+	else
+		ref->display = NULL;
+
 	ref->reference = NULL;
 	ref->flags = flags;
 	ref->unique_id = unique_id;
@@ -2051,7 +2072,7 @@
 
 int pattern_read_from_file(struct pattern_head *head, unsigned int refflags,
                            const char *filename, int patflags,
-                           char **err)
+                           char **err, const char *display)
 {
 	struct pat_ref *ref;
 	struct pattern_expr *expr;
@@ -2061,7 +2082,7 @@
 
 	/* If the reference doesn't exists, create it and load associated file. */
 	if (!ref) {
-		ref = pat_ref_new(filename, refflags);
+		ref = pat_ref_new(filename, display, refflags);
 		if (!ref) {
 			memprintf(err, "out of memory");
 			return 0;
diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index 2b12ef8..5ede823 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -1218,9 +1218,10 @@
 
 /* Parse a tcp-response rule. Return a negative value in case of failure */
 static int tcp_parse_response_rule(char **args, int arg, int section_type,
-				  struct proxy *curpx, struct proxy *defpx,
-				  struct tcp_rule *rule, char **err,
-                                  unsigned int where)
+                                   struct proxy *curpx, struct proxy *defpx,
+                                   struct tcp_rule *rule, char **err,
+                                   unsigned int where,
+                                   const char *file, int line)
 {
 	if (curpx == defpx || !(curpx->cap & PR_CAP_BE)) {
 		memprintf(err, "%s %s is only allowed in 'backend' sections",
@@ -1248,7 +1249,7 @@
 	}
 
 	if (strcmp(args[arg], "if") == 0 || strcmp(args[arg], "unless") == 0) {
-		if ((rule->cond = build_acl_cond(NULL, 0, curpx, (const char **)args+arg, err)) == NULL) {
+		if ((rule->cond = build_acl_cond(file, line, curpx, (const char **)args+arg, err)) == NULL) {
 			memprintf(err,
 			          "'%s %s %s' : error detected in %s '%s' while parsing '%s' condition : %s",
 			          args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg], *err);
@@ -1270,7 +1271,7 @@
 static int tcp_parse_request_rule(char **args, int arg, int section_type,
                                   struct proxy *curpx, struct proxy *defpx,
                                   struct tcp_rule *rule, char **err,
-                                  unsigned int where)
+                                  unsigned int where, const char *file, int line)
 {
 	if (curpx == defpx) {
 		memprintf(err, "%s %s is not allowed in 'defaults' sections",
@@ -1357,7 +1358,7 @@
 	}
 
 	if (strcmp(args[arg], "if") == 0 || strcmp(args[arg], "unless") == 0) {
-		if ((rule->cond = build_acl_cond(NULL, 0, curpx, (const char **)args+arg, err)) == NULL) {
+		if ((rule->cond = build_acl_cond(file, line, curpx, (const char **)args+arg, err)) == NULL) {
 			memprintf(err,
 			          "'%s %s %s' : error detected in %s '%s' while parsing '%s' condition : %s",
 			          args[0], args[1], args[2], proxy_type_str(curpx), curpx->id, args[arg], *err);
@@ -1433,7 +1434,7 @@
 		if (curpx->cap & PR_CAP_BE)
 			where |= SMP_VAL_BE_RES_CNT;
 
-		if (tcp_parse_response_rule(args, arg, section_type, curpx, defpx, rule, err, where) < 0)
+		if (tcp_parse_response_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
 			goto error;
 
 		acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
@@ -1542,7 +1543,7 @@
 		if (curpx->cap & PR_CAP_BE)
 			where |= SMP_VAL_BE_REQ_CNT;
 
-		if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where) < 0)
+		if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
 			goto error;
 
 		acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;
@@ -1585,7 +1586,7 @@
 
 		where |= SMP_VAL_FE_CON_ACC;
 
-		if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where) < 0)
+		if (tcp_parse_request_rule(args, arg, section_type, curpx, defpx, rule, err, where, file, line) < 0)
 			goto error;
 
 		acl = rule->cond ? acl_cond_conflicts(rule->cond, where) : NULL;