From ea053d96f7e89e053d4af8d39b04c5428760345f Mon Sep 17 00:00:00 2001
From: David Härdeman <david@hardeman.nu>
Date: Tue, 23 Jun 2020 20:56:22 +0200
Subject: Big renaming, move some more functionality to shared lib

---
 shared/utils.h | 106 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100644 shared/utils.h

(limited to 'shared/utils.h')

diff --git a/shared/utils.h b/shared/utils.h
new file mode 100644
index 0000000..df728b2
--- /dev/null
+++ b/shared/utils.h
@@ -0,0 +1,106 @@
+#ifndef fooutilshfoo
+#define fooutilshfoo
+
+#include <stdio.h>
+#include <string.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <linux/if_packet.h>
+
+extern unsigned debug_mask;
+
+#include "list.h"
+#include "debug.h"
+
+/* These functions need to be defined in the linking binary */
+#define zmalloc(s) __zmalloc(__func__, __LINE__, s)
+void *__zmalloc(const char *fn, int line, size_t s);
+
+#define xstrdup(s) __xstrdup(__func__, __LINE__, s)
+char *__xstrdup(const char *fn, int line, const char *s);
+
+#define xstrndup(s, n) __xstrndup(__func__, __LINE__, s, n)
+char *__xstrndup(const char *fn, int line, const char *s, size_t n);
+
+#define xfree(s) __xfree(__func__, __LINE__, s)
+void __xfree(const char *fn, int line, void *ptr);
+
+/* Length of longest DNS name = 253 + trailing dot */
+#define FQDN_STR_LEN 254
+
+/* Length of longest port string = strlen("65535") */
+#define PORT_STR_LEN 5
+
+/* Length of longest address family string = strlen("AF_INETX") */
+#define AF_STR_LEN 8
+
+/* Length of longest addrstr, format = "AF_INETX <IPADDR> <PORT> */
+#define ADDRSTRLEN (AF_STR_LEN + 1 + INET6_ADDRSTRLEN + 1 + PORT_STR_LEN + 1)
+
+struct saddr {
+	union {
+		struct sockaddr_storage storage;
+		struct sockaddr_in in4;
+		struct sockaddr_in6 in6;
+		struct sockaddr_ll ll;
+	};
+	socklen_t addrlen;
+	char addrstr[ADDRSTRLEN];
+	struct list_head list;
+};
+
+void socket_set_low_latency(int sfd, bool keepalive, bool iptos, bool nodelay);
+
+char *saddr_addr(struct saddr *saddr, char *buf, size_t len);
+
+uint16_t saddr_port(struct saddr *saddr);
+
+void saddr_set_ipv4(struct saddr *saddr, in_addr_t ip, in_port_t port);
+
+void saddr_set_ipv6(struct saddr *saddr, const struct in6_addr *ip, in_port_t port);
+
+void saddr_set_addrstr(struct saddr *saddr);
+
+int strtou16_strict(const char *str, uint16_t *result);
+
+static inline bool empty_str(const char *str)
+{
+	if (!str || str[0] == '\0')
+		return true;
+	else
+		return false;
+}
+
+static inline bool streq(const char *a, const char *b)
+{
+	return strcmp(a, b) == 0;
+}
+
+static inline bool strcaseeq(const char *a, const char *b)
+{
+	return strcasecmp(a, b) == 0;
+}
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define chtobe32(x) __bswap_constant_32(x)
+#else
+#define chtobe32(x) (x)
+#endif
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+#define cinet_addr(a,b,c,d) ((uint32_t)((a)<<0|(b)<<8|(c)<<16|(d)<<24))
+#else
+#define cinet_addr(a,b,c,d) ((uint32_t)((a)<<24|(b)<<16|(c)<<8|(d)<<0))
+#endif
+
+#define PIPE_RD 0
+#define PIPE_WR 1
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
+#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
+
+#endif
+
-- 
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