MEDIUM: pattern: replace type pattern_arg with type arg

arg is more complete than pattern_arg since it also covers ACL args,
so let's use this one instead.
diff --git a/include/proto/pattern.h b/include/proto/pattern.h
index 25a00d6..bb1181c 100644
--- a/include/proto/pattern.h
+++ b/include/proto/pattern.h
@@ -34,6 +34,6 @@
 void pattern_register_fetches(struct pattern_fetch_kw_list *psl);
 void pattern_register_convs(struct pattern_conv_kw_list *psl);
 
-int pattern_arg_ipmask(const char *arg_str, struct pattern_arg **arg_p, int *arg_i);
-int pattern_arg_str(const char *arg_str, struct pattern_arg **arg_p, int *arg_i);
+int pattern_arg_ipmask(const char *arg_str, struct arg **arg_p, int *arg_i);
+int pattern_arg_str(const char *arg_str, struct arg **arg_p, int *arg_i);
 #endif
diff --git a/include/types/pattern.h b/include/types/pattern.h
index da383ba..e948264 100644
--- a/include/types/pattern.h
+++ b/include/types/pattern.h
@@ -22,9 +22,10 @@
 #ifndef _TYPES_PATTERN_H
 #define _TYPES_PATTERN_H
 
-#include <types/buffers.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#include <types/arg.h>
+#include <types/buffers.h>
 
 /* pattern in and out types */
 enum {
@@ -38,34 +39,12 @@
 	PATTERN_TYPES             /* number of types, must always be last */
 };
 
-
-/* pattern arg types */
-enum {
-	PATTERN_ARG_TYPE_IP = 0,      /* ipv4 type */
-	PATTERN_ARG_TYPE_IPV6,        /* ipv6 type */
-	PATTERN_ARG_TYPE_INTEGER,     /* unsigned 32bits integer type */
-	PATTERN_ARG_TYPE_SINTEGER,    /* signed 32bits integer type */
-	PATTERN_ARG_TYPE_STRING       /* string type */
-};
 
 /* pattern fetch direction */
 #define PATTERN_FETCH_REQ	1
 #define PATTERN_FETCH_RTR	2
 
 
-union pattern_arg_data {
-	struct in_addr ip;        /* used for ipv4 type */
-	struct in6_addr ipv6;     /* used for ipv6 type */
-	uint32_t integer;         /* used for unsigned 32bits integer type */
-	int sinteger;             /* used for signed 32bits integer type */
-	struct chunk str;
-};
-
-struct pattern_arg {
-	int type;                    /* type of arg */
-	union pattern_arg_data data; /* data */
-};
-
 /* pattern result data */
 union pattern_data {
 	struct in_addr ip;        /* used for ipv4 type */
@@ -83,11 +62,11 @@
 /* pattern conversion */
 struct pattern_conv {
 	const char *kw;                           /* configuration keyword  */
-	int (*process)(const struct pattern_arg *arg_p,
+	int (*process)(const struct arg *arg_p,
 	               int arg_i,
 	               union pattern_data *data); /* process function */
 	int (*parse_args)(const char *arg_str,
-			  struct pattern_arg **arg_p,
+			  struct arg **arg_p,
 			  int *arg_i);            /* argument parser. Can be NULL. */
 	unsigned int in_type;                     /* input needed pattern type */
 	unsigned int out_type;                    /* output pattern type */
@@ -97,7 +76,7 @@
 struct pattern_conv_expr {
 	struct list list;                         /* member of a pattern expression */
 	struct pattern_conv *conv;                /* pattern conversion */
-	struct pattern_arg *arg_p;                /* pointer on args */
+	struct arg *arg_p;                        /* pointer on args */
 	int arg_i;                                /* number of args */
 };
 
@@ -107,11 +86,11 @@
 	int (*process)(struct proxy *px,
 	               struct session *l4,
 	               void *l7,
-	               int dir, const struct pattern_arg *arg_p,
+	               int dir, const struct arg *arg_p,
 	               int arg_i,
 	               union pattern_data *data); /* fetch processing function */
 	int (*parse_args)(const char *arg_str,
-			  struct pattern_arg **arg_p,
+			  struct arg **arg_p,
 			  int *arg_i);            /* argument parser. Can be NULL. */
 	unsigned long out_type;                   /* output pattern type */
 	int dir;                                  /* usable directions */
@@ -121,7 +100,7 @@
 struct pattern_expr {
 	struct list list;                         /* member of list of pattern, currently not used */
 	struct pattern_fetch *fetch;              /* pattern fetch */
-	struct pattern_arg *arg_p;                /* pointer on args */
+	struct arg *arg_p;                        /* pointer on args */
 	int arg_i;                                /* number of args */
 	struct list conv_exprs;                   /* list of conversion expression to apply */
 };
diff --git a/src/haproxy.c b/src/haproxy.c
index fdc6acc..f606ee2 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -758,14 +758,19 @@
 	}
 }
 
-static void deinit_pattern_arg(struct pattern_arg *p, int i)
+static void deinit_pattern_arg(struct arg *p, int i)
 {
 	if (!p)
 		return;
 
-	while (i--)
-		if (p[i].type == PATTERN_ARG_TYPE_STRING)
+	while (i--) {
+		if (p[i].type == ARGT_FE || p[i].type == ARGT_BE ||
+		    p[i].type == ARGT_TAB || p[i].type == ARGT_SRV ||
+		    p[i].type == ARGT_USR || p[i].type == ARGT_STR) {
 			free(p[i].data.str.str);
+			p[i].data.str.str = NULL;
+		}
+	}
 
 	free(p);
 }
diff --git a/src/pattern.c b/src/pattern.c
index 78728f6..cae85a8 100644
--- a/src/pattern.c
+++ b/src/pattern.c
@@ -476,30 +476,30 @@
 	return p;
 }
 
-/* Converts an argument string mask to a pattern_arg type IP.
+/* Converts an argument string mask to a arg type IP.
  * Returns non-zero in case of success, 0 on error.
  */
-int pattern_arg_ipmask(const char *arg_str, struct pattern_arg **arg_p, int *arg_i)
+int pattern_arg_ipmask(const char *arg_str, struct arg **arg_p, int *arg_i)
 {
 	*arg_i = 1;
-	*arg_p = calloc(1, *arg_i*sizeof(struct pattern_arg));
-	(*arg_p)->type = PATTERN_ARG_TYPE_IP;
+	*arg_p = calloc(1, *arg_i*sizeof(struct arg));
+	(*arg_p)->type = ARGT_IPV4;
 
-	if (!str2mask(arg_str, &(*arg_p)->data.ip))
+	if (!str2mask(arg_str, &(*arg_p)->data.ipv4))
 		return 0;
 
 	return 1;
 }
 
 
-/* Converts an argument string to a pattern_arg type STRING.
+/* Converts an argument string to a arg type STRING.
  * Returns non-zero in case of success, 0 on error.
  */
-int pattern_arg_str(const char *arg_str, struct pattern_arg **arg_p, int *arg_i)
+int pattern_arg_str(const char *arg_str, struct arg **arg_p, int *arg_i)
 {
 	*arg_i = 1;
-	*arg_p = calloc(1, *arg_i*sizeof(struct pattern_arg));
-	(*arg_p)->type = PATTERN_ARG_TYPE_STRING;
+	*arg_p = calloc(1, *arg_i*sizeof(struct arg));
+	(*arg_p)->type = ARGT_STR;
 	(*arg_p)->data.str.str = strdup(arg_str);
 	(*arg_p)->data.str.len = strlen(arg_str);
 
@@ -512,7 +512,7 @@
 /*    Pattern format convert functions                           */
 /*****************************************************************/
 
-static int pattern_conv_str2lower(const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+static int pattern_conv_str2lower(const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	int i;
 
@@ -526,7 +526,7 @@
 	return 1;
 }
 
-static int pattern_conv_str2upper(const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+static int pattern_conv_str2upper(const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	int i;
 
@@ -541,9 +541,9 @@
 }
 
 /* takes the netmask in arg_i */
-static int pattern_conv_ipmask(const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+static int pattern_conv_ipmask(const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
-	data->ip.s_addr &= arg_p->data.ip.s_addr;
+	data->ip.s_addr &= arg_p->data.ipv4.s_addr;
 	return 1;
 }
 
diff --git a/src/proto_http.c b/src/proto_http.c
index 7d71bd1..6dcb5ff 100644
--- a/src/proto_http.c
+++ b/src/proto_http.c
@@ -8344,7 +8344,7 @@
 /* Returns the last occurrence of specified header. */
 static int
 pattern_fetch_hdr(struct proxy *px, struct session *l4, void *l7, int dir,
-		  const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+		  const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	struct http_txn *txn = l7;
 
@@ -8439,7 +8439,7 @@
 
 static int
 pattern_fetch_url_param(struct proxy *px, struct session *l4, void *l7, int dir,
-                     const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+                     const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	struct http_txn *txn = l7;
 	struct http_msg *msg = &txn->req;
@@ -8492,7 +8492,7 @@
 
 static int
 pattern_fetch_cookie(struct proxy *px, struct session *l4, void *l7, int dir,
-                     const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+                     const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	struct http_txn *txn = l7;
 	struct http_msg *msg = &txn->req;
@@ -8514,7 +8514,7 @@
 
 static int
 pattern_fetch_set_cookie(struct proxy *px, struct session *l4, void *l7, int dir,
-			 const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+			 const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	struct http_txn *txn = l7;
 	struct http_msg *msg = &txn->rsp;
diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index b61aaf4..59d0d55 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -1275,7 +1275,7 @@
 /* extract the connection's source ipv4 address */
 static int
 pattern_fetch_src(struct proxy *px, struct session *l4, void *l7, int dir,
-                  const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+                  const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	if (l4->si[0].addr.from.ss_family != AF_INET )
 		return 0;
@@ -1287,7 +1287,7 @@
 /* extract the connection's source ipv6 address */
 static int
 pattern_fetch_src6(struct proxy *px, struct session *l4, void *l7, int dir,
-                  const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+                  const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	if (l4->si[0].addr.from.ss_family != AF_INET6)
 		return 0;
@@ -1337,7 +1337,7 @@
 /* extract the connection's destination ipv4 address */
 static int
 pattern_fetch_dst(struct proxy *px, struct session *l4, void *l7, int dir,
-                  const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+                  const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	stream_sock_get_to_addr(&l4->si[0]);
 
@@ -1351,7 +1351,7 @@
 /* extract the connection's destination ipv6 address */
 static int
 pattern_fetch_dst6(struct proxy *px, struct session *l4, void *l7, int dir,
-                  const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+                  const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	stream_sock_get_to_addr(&l4->si[0]);
 
@@ -1378,7 +1378,7 @@
 
 static int
 pattern_fetch_dport(struct proxy *px, struct session *l4, void *l7, int dir,
-                    const struct pattern_arg *arg, int i, union pattern_data *data)
+                    const struct arg *arg, int i, union pattern_data *data)
 {
 	stream_sock_get_to_addr(&l4->si[0]);
 
@@ -1389,7 +1389,7 @@
 }
 
 static int
-pattern_arg_fetch_payloadlv(const char *arg, struct pattern_arg **arg_p, int *arg_i)
+pattern_arg_fetch_payloadlv(const char *arg, struct arg **arg_p, int *arg_i)
 {
 	int member = 0;
 	int len_offset = 0;
@@ -1446,24 +1446,24 @@
 	}
 
 	*arg_i = 3;
-	*arg_p = calloc(1, *arg_i*sizeof(struct pattern_arg));
-	(*arg_p)[0].type = PATTERN_ARG_TYPE_INTEGER;
-	(*arg_p)[0].data.integer = len_offset;
-	(*arg_p)[1].type = PATTERN_ARG_TYPE_INTEGER;
-	(*arg_p)[1].data.integer = len_size;
-	(*arg_p)[2].type = PATTERN_ARG_TYPE_INTEGER;
-	(*arg_p)[2].data.integer = buf_offset;
+	*arg_p = calloc(1, *arg_i*sizeof(struct arg));
+	(*arg_p)[0].type = ARGT_UINT;
+	(*arg_p)[0].data.uint = len_offset;
+	(*arg_p)[1].type = ARGT_UINT;
+	(*arg_p)[1].data.uint = len_size;
+	(*arg_p)[2].type = ARGT_UINT;
+	(*arg_p)[2].data.uint = buf_offset;
 
 	return 1;
 }
 
 static int
 pattern_fetch_payloadlv(struct proxy *px, struct session *l4, void *l7, int dir,
-                        const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+                        const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
-	int len_offset = arg_p[0].data.integer;
-	int len_size = arg_p[1].data.integer;
-	int buf_offset = arg_p[2].data.integer;
+	int len_offset = arg_p[0].data.uint;
+	int len_size = arg_p[1].data.uint;
+	int buf_offset = arg_p[2].data.uint;
 	int buf_size = 0;
 	struct buffer *b;
 	int i;
@@ -1500,7 +1500,7 @@
 }
 
 static int
-pattern_arg_fetch_payload (const char *arg, struct pattern_arg **arg_p, int *arg_i)
+pattern_arg_fetch_payload (const char *arg, struct arg **arg_p, int *arg_i)
 {
 	int member = 0;
 	int buf_offset = 0;
@@ -1528,21 +1528,21 @@
 		return 0;
 
 	*arg_i = 2;
-	*arg_p = calloc(1, *arg_i*sizeof(struct pattern_arg));
-	(*arg_p)[0].type = PATTERN_ARG_TYPE_INTEGER;
-	(*arg_p)[0].data.integer = buf_offset;
-	(*arg_p)[1].type = PATTERN_ARG_TYPE_INTEGER;
-	(*arg_p)[1].data.integer = buf_size;
+	*arg_p = calloc(1, *arg_i*sizeof(struct arg));
+	(*arg_p)[0].type = ARGT_UINT;
+	(*arg_p)[0].data.uint = buf_offset;
+	(*arg_p)[1].type = ARGT_UINT;
+	(*arg_p)[1].data.uint = buf_size;
 
 	return 1;
 }
 
 static int
 pattern_fetch_payload(struct proxy *px, struct session *l4, void *l7, int dir,
-                      const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+                      const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
-	int buf_offset = arg_p[0].data.integer;
-	int buf_size = arg_p[1].data.integer;
+	int buf_offset = arg_p[0].data.uint;
+	int buf_size = arg_p[1].data.uint;
 	struct buffer *b;
 
 	if (!l4)
@@ -1564,7 +1564,7 @@
 
 static int
 pattern_fetch_rdp_cookie(struct proxy *px, struct session *l4, void *l7, int dir,
-                         const struct pattern_arg *arg_p, int arg_i, union pattern_data *data)
+                         const struct arg *arg_p, int arg_i, union pattern_data *data)
 {
 	int ret;
 	struct acl_expr  expr;