feat: add support for multiple destination

includes/cli.h

@@ -9,7 +9,8 @@ enum e_cli_code {
 	CLI_ERROR			= 1
 };
 
-enum e_cli_code
-cli_parse_arguments(int argc, char **argv, t_ping_config *config);
+enum e_cli_code cli_parse_arguments(int argc, char **argv,
+				t_ping_config *config);
+void cli_config_free(t_ping_config *config);
 
 #endif

includes/ft_ping.h

@@ -3,11 +3,13 @@
 
 #include <stdint.h>
 #include <stddef.h>
+#include <netinet/in.h>
 
 typedef struct s_ping_config
 {
-	/* Target */
-	char		*destination;
+	/* Targets */
+	struct in_addr	*destinations;
+	size_t			nb_destinations;
 
 	/* Options */
 	uint64_t	count;

includes/internal/cli/messages.h

@@ -10,5 +10,7 @@ enum e_cli_code error_unknown_opt(const char *current_opt);
 enum e_cli_code error_invalid_arg(const char *current_opt);
 enum e_cli_code error_invalid_opt(const char *current_opt);
 enum e_cli_code error_duplicate_opt(const char *current_opt);
+enum e_cli_code error_missing_dest(void);
+enum e_cli_code error_invalid_dest(void);
 
 #endif

includes/internal/cli/parse_utils.h

@@ -2,8 +2,12 @@
 #define CLI_INTERNAL_PARSE_UTILS
 
 #include <stdint.h>
+#include <netinet/in.h>
+#include "ft_ping.h"
 
 int cli_parse_uint64(const char *s, uint64_t *out);
 int cli_parse_float(const char *s, float *out);
+int cli_parse_inet_addr(const char *s, struct in_addr *out);
+int cli_parse_destinations(int argc, char **argv, int optind, t_ping_config *config);
 
 #endif

sources.mk

@@ -15,7 +15,10 @@ SRCS = $(SRC_DIR)/main.c \
 	   $(SRC_DIR)/cli/handlers/handle_verbose.c \
 	   $(SRC_DIR)/cli/parse_utils/parse_int.c \
 	   $(SRC_DIR)/cli/parse_utils/parse_float.c \
+	   $(SRC_DIR)/cli/parse_utils/parse_inet_addr.c \
+	   $(SRC_DIR)/cli/parse_utils/parse_destinations.c \
 	   $(SRC_DIR)/cli/parse_utils/get_optstr.c \
+	   $(SRC_DIR)/cli/config_free.c \
 	   $(SRC_DIR)/cli/messages/help.c \
 	   $(SRC_DIR)/cli/messages/version.c \
 	   $(SRC_DIR)/cli/messages/error.c \

src/cli/config_free.c

@@ -0,0 +1,10 @@
+#include <stdlib.h>
+
+#include "cli.h"
+
+void
+cli_config_free(t_ping_config *config)
+{
+	free(config->destinations);
+	config->destinations = NULL;
+}

src/cli/messages/error.c

@@ -46,6 +46,22 @@ error_duplicate_opt(const char *current_opt)
 	return CLI_ERROR;
 }
 
+enum e_cli_code
+error_missing_dest(void)
+{
+	dprintf(STDERR_FILENO, "%s: usage error: Destination address required\n",
+			CMD_NAME);
+	print_suggest_help();
+	return CLI_ERROR;
+}
+
+enum e_cli_code
+error_invalid_dest(void)
+{
+	dprintf(STDERR_FILENO, "%s: unknown host\n", CMD_NAME);
+	return CLI_ERROR;
+}
+
 void static inline
 print_suggest_help(void)
 {

src/cli/parse.c

@@ -1,3 +1,4 @@
+#include <stdlib.h>
 #include <string.h>
 #include <getopt.h>
 
@@ -7,6 +8,7 @@
 #include "internal/cli/messages.h"
 #include "internal/cli/options.h"
 #include "internal/cli/arg_handler.h"
+#include "internal/cli/parse_utils.h"
 
 /* Map -? to -h to support help shortcut */
 #define HANDLE_QUESTION_MARK(opt) \
@@ -42,7 +44,7 @@ cli_parse_arguments(int argc, char **argv, t_ping_config *config)
 		if (CLI_SUCCESS != res)
 			return res;
 	}
-	return CLI_SUCCESS;
+	return cli_parse_destinations(argc, argv, optind, config);
 }
 
 static int

src/cli/parse_utils/parse_destinations.c

@@ -0,0 +1,28 @@
+#include <stdlib.h>
+
+#include "cli.h"
+#include "internal/cli/messages.h"
+#include "internal/cli/parse_utils.h"
+
+int
+cli_parse_destinations(int argc, char **argv, int optind, t_ping_config *config)
+{
+	if (optind >= argc)
+		return error_missing_dest();
+
+	config->nb_destinations = (size_t)(argc - optind);
+	config->destinations = malloc(config->nb_destinations * sizeof(struct in_addr));
+	if (NULL == config->destinations)
+		return CLI_ERROR;
+
+	for (int i = optind; i < argc; i++)
+	{
+		if (0 != cli_parse_inet_addr(argv[i], &config->destinations[i - optind]))
+		{
+			free(config->destinations);
+			config->destinations = NULL;
+			return error_invalid_dest();
+		}
+	}
+	return CLI_SUCCESS;
+}

src/cli/parse_utils/parse_inet_addr.c

@@ -0,0 +1,23 @@
+#include <netdb.h>
+#include <netinet/in.h>
+#include <string.h>
+
+int
+cli_parse_inet_addr(const char *s, struct in_addr *out)
+{
+	struct addrinfo		hints;
+	struct addrinfo		*res;
+
+	bzero(&hints, sizeof(struct addrinfo));
+	hints.ai_family = AF_INET;
+
+	if (0 != getaddrinfo(s, NULL, &hints, &res))
+		return 1;
+
+	struct sockaddr_in	sin;
+
+	memcpy(&sin, res->ai_addr, sizeof(sin));
+	freeaddrinfo(res);
+	*out = sin.sin_addr;
+	return 0;
+}

src/main.c

@@ -21,15 +21,14 @@ main(int argc, char **argv)
 		return EXIT_FAILURE;
 	ret = cli_parse_arguments(argc, argv, &config);
 	if (ret != CLI_SUCCESS)
-	{
-		free(g_prog_name.alloc);
-		return (ret == CLI_ERROR) ? EXIT_FAILURE : EXIT_SUCCESS;
-	}
+		goto cleanup;
 
 	printf("PING: Not yet implemented\n");
 
+cleanup:
+	cli_config_free(&config);
 	free(g_prog_name.alloc);
-	return EXIT_SUCCESS;
+	return (ret == CLI_ERROR) ? EXIT_FAILURE : EXIT_SUCCESS;
 }
 
 static int