Add ftp upload function + add documentation.

1 files changed, 104 insertions, 0 deletions

diff --git a/src/ftphelper.c b/src/ftphelper.c
new file mode 100644
index 0000000..ffa289c
--- /dev/null
+++ b/src/ftphelper.c
@@ -0,0 +1,104 @@
+/* 
+ * ftphelper
+ *
+ * Copyright (C) 2012 Jonathan McCrohan
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+// gcc ftphelper.c -o ftphelper `pkg-config --libs --cflags libconfig`
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>    
+#include <sys/socket.h>
+#include <net/if.h>
+#include <string.h>
+#include <libconfig.h>
+
+char *mac_address() {
+	int s;
+	struct ifreq ifr;
+
+	s = socket(PF_INET, SOCK_DGRAM, 0);
+	memset(&ifr, 0x00, sizeof(ifr));
+	strcpy(ifr.ifr_name, "eth0");
+	ioctl(s, SIOCGIFHWADDR, &ifr);
+	close(s);
+
+	static char mac_address[12];
+	sprintf(mac_address, "%.2X%.2X%.2X%.2X%.2X%.2X",
+			(unsigned char) ifr.ifr_hwaddr.sa_data[0],
+			(unsigned char) ifr.ifr_hwaddr.sa_data[1],
+			(unsigned char) ifr.ifr_hwaddr.sa_data[2],
+			(unsigned char) ifr.ifr_hwaddr.sa_data[3],
+			(unsigned char) ifr.ifr_hwaddr.sa_data[4],
+			(unsigned char) ifr.ifr_hwaddr.sa_data[5]);
+
+	return mac_address;
+}
+
+int main(int argc, char *argv[]) {
+
+	if (argc == 1) {
+		return 0;
+	}
+
+	if (strcmp(argv[1], "--mac") == 0) {
+		printf("%s", mac_address());
+		return 0;
+	}
+
+	const char *configfile = "/etc/modbuslog.cfg";
+	config_t cfg;
+	const char *ftp_server;
+	const char *ftp_username;
+	const char *ftp_password;
+	const char *ftp_directory;
+
+	config_init(&cfg);
+
+	if (!config_read_file(&cfg, configfile)) {
+		fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),
+				config_error_line(&cfg), config_error_text(&cfg));
+		config_destroy(&cfg);
+		fprintf(stderr, "Unable to find configfile.\n");
+		return 1;
+	}
+
+	if (!(config_lookup_string(&cfg, "ftp.server", &ftp_server)
+			&& config_lookup_string(&cfg, "ftp.username", &ftp_username)
+			&& config_lookup_string(&cfg, "ftp.password", &ftp_password)
+			&& config_lookup_string(&cfg, "ftp.directory", &ftp_directory))) {
+		fprintf(stderr,
+				"Incomplete ftp configuration. Check configuration file.\n");
+		return 1;
+	}
+
+	if (strcmp(argv[1], "--server") == 0) {
+		printf("%s", ftp_server);
+		return 0;
+	}
+	if (strcmp(argv[1], "--username") == 0) {
+		printf("%s", ftp_username);
+		return 0;
+	}
+	if (strcmp(argv[1], "--password") == 0) {
+		printf("%s", ftp_password);
+		return 0;
+	}
+	if (strcmp(argv[1], "--directory") == 0) {
+		printf("%s", ftp_directory);
+		return 0;
+	}
+}