Detect and handle errors in loading udt

inputs.cc

@@ -1537,7 +1537,7 @@ int LoadTopoData(int max_lon, int min_lon, int max_lat, int min_lat)
 	return 0;
 }
 
-void LoadUDT(char *filename)
+int LoadUDT(char *filename)
 {
 	/* This function reads a file containing User-Defined Terrain
 	   features for their addition to the digital elevation model
@@ -1552,13 +1552,19 @@ void LoadUDT(char *filename)
 	double latitude, longitude, height, tempheight;
 	FILE *fd1 = NULL, *fd2 = NULL;
 
-	strcpy(tempname, "/tmp/XXXXXX\0");
+	strcpy(tempname, "/tmp/XXXXXX");
 
-	fd1 = fopen(filename, "r");
+	if( (fd1 = fopen(filename, "r")) == NULL )
+		return errno;
 
-	if (fd1 != NULL) {
-		fd = mkstemp(tempname);
-		fd2 = fopen(tempname, "w");
+	if( (fd = mkstemp(tempname)) == -1 )
+		return errno;
+
+	if( (fd2 = fdopen(fd,"w")) == NULL ){
+		fclose(fd1);
+		close(fd);
+		return errno;
+	}
 
 	s = fgets(input, 78, fd1);
 
@@ -1634,10 +1640,14 @@ void LoadUDT(char *filename)
 
 	fclose(fd1);
 	fclose(fd2);
-		close(fd);
 
-		fd1 = fopen(tempname, "r");
-		fd2 = fopen(tempname, "r");
+	if( (fd1 = fopen(tempname, "r")) == NULL )
+		return errno;
+
+	if( (fd2 = fopen(tempname, "r")) == NULL ){
+		fclose(fd1);
+		return errno;
+	}
 
 	y = 0;
 
@@ -1685,6 +1695,5 @@ void LoadUDT(char *filename)
 	fclose(fd1);
 	fclose(fd2);
 	unlink(tempname);
-	}
-
+	return 0;
 }

inputs.hh

@@ -10,7 +10,7 @@ int LoadSignalColors(struct site xmtr);
 int LoadLossColors(struct site xmtr);
 int LoadDBMColors(struct site xmtr);
 int LoadTopoData(int max_lon, int min_lon, int max_lat, int min_lat);
-void LoadUDT(char *filename);
+int LoadUDT(char *filename);
 int loadLIDAR(char *filename);
 int loadClutter(char *filename, double radius, struct site tx);
 

main.cc

@@ -28,6 +28,7 @@ double version = 3.02;
 #include <ctype.h>
 #include <unistd.h>
 #include <errno.h>
+#include <limits.h>
 
 #include "common.h"
 #include "inputs.hh"
@@ -1049,8 +1050,8 @@ int main(int argc, char *argv[])
 	unsigned char LRmap = 0, txsites = 0, topomap = 0, geo = 0, kml =
 	    0, area_mode = 0, max_txsites, ngs = 0;
 
-	char mapfile[255], udt_file[255], ano_filename[255], lidar_tiles[4096], clutter_file[255];
-	char *az_filename, *el_filename;
+	char mapfile[255], ano_filename[255], lidar_tiles[4096], clutter_file[255];
+	char *az_filename, *el_filename, *udt_file = NULL;
 
 	double altitude = 0.0, altitudeLR = 0.0, tx_range = 0.0,
 	    rx_range = 0.0, deg_range = 0.0, deg_limit = 0.0, deg_range_lon;
@@ -1142,7 +1143,7 @@ int main(int argc, char *argv[])
 	forced_erp = -1.0;
 	forced_freq = 0.0;
 	sdf_path[0] = 0;
-	udt_file[0] = 0;
+	udt_file = NULL;
 	path.length = 0;
 	max_txsites = 30;
 	fzone_clearance = 0.6;
@@ -1488,10 +1489,14 @@ int main(int argc, char *argv[])
 		}
 
 	
-		 /*UDT*/ if (strcmp(argv[x], "-udt") == 0) {
+		 /*UDT*/
+		if (strcmp(argv[x], "-udt") == 0) {
 			z = x + 1;
 
 			if (z <= y && argv[z][0]) {
+				udt_file = (char*) calloc(PATH_MAX+1, sizeof(char));
+				if( udt_file == NULL )
+					return ENOMEM;
 				strncpy(udt_file, argv[z], 253);
 			}
 		}
@@ -1813,7 +1818,10 @@ int main(int argc, char *argv[])
 	mpi = ippd-1; 
 
 	// User defined clutter file
-	LoadUDT(udt_file);
+	if( udt_file != NULL && (result = LoadUDT(udt_file)) != 0 ){
+		fprintf(stderr, "Error loading clutter file\n");
+		return result;
+	}
 
 	// Enrich with Clutter
 	if(strlen(clutter_file) > 1){

outputs.cc

@@ -507,7 +507,7 @@ int DoSigStr(char *filename, unsigned char geo, unsigned char kml,
 		fclose(fd);
 		fd = NULL;
 	}
-
+	return 0;
 }
 
 void DoRxdPwr(char *filename, unsigned char geo, unsigned char kml,