Fix issues found by Coverity.

[oweals/tinc.git] / src / tincd.c

diff --git a/src/tincd.c b/src/tincd.c
index 7416d11bb0c25d1b9edbfa7722125a2d84a1078b..d15d2ffaf5bfcd8b72a0973b40f0eb8c1037c08e 100644 (file)
--- a/src/tincd.c
+++ b/src/tincd.c
@@ -162,6 +162,11 @@ static bool parse_options(int argc, char **argv) {
                                break;
 
                        case 'c':                               /* config file */
+                               if(confbase) {
+                                       fprintf(stderr, "Only one configuration directory can be given.\n");
+                                       usage(true);
+                                       return false;
+                               }
                                confbase = xstrdup(optarg);
                                break;
 
@@ -229,6 +234,11 @@ static bool parse_options(int argc, char **argv) {
 
                        case 'n':                               /* net name given */
                                /* netname "." is special: a "top-level name" */
+                               if(netname) {
+                                       fprintf(stderr, "Only one netname can be given.\n");
+                                       usage(true);
+                                       return false;
+                               }
                                netname = strcmp(optarg, ".") != 0 ? xstrdup(optarg) : NULL;
                                break;
 
@@ -281,11 +291,22 @@ static bool parse_options(int argc, char **argv) {
                                use_logfile = true;
                                if(!optarg && optind < argc && *argv[optind] != '-')
                                        optarg = argv[optind++];
-                               if(optarg)
+                               if(optarg) {
+                                       if(logfilename) {
+                                               fprintf(stderr, "Only one logfile can be given.\n");
+                                               usage(true);
+                                               return false;
+                                       }
                                        logfilename = xstrdup(optarg);
+                               }
                                break;
 
                        case 5:                                 /* write PID to a file */
+                               if(pidfilename) {
+                                       fprintf(stderr, "Only one pidfile can be given.\n");
+                                       usage(true);
+                                       return false;
+                               }
                                pidfilename = xstrdup(optarg);
                                break;
 
@@ -350,7 +371,6 @@ static void indicator(int a, int b, void *p) {
 static bool keygen(int bits) {
        RSA *rsa_key;
        FILE *f;
-       char *name = get_name();
        char *pubname, *privname;
 
        fprintf(stderr, "Generating %d bits keys:\n", bits);
@@ -378,10 +398,14 @@ static bool keygen(int bits) {
        PEM_write_RSAPrivateKey(f, rsa_key, NULL, NULL, 0, NULL, NULL);
        fclose(f);
 
-       if(name)
+       char *name = get_name();
+
+       if(name) {
                xasprintf(&pubname, "%s/hosts/%s", confbase, name);
-       else
+               free(name);
+       } else {
                xasprintf(&pubname, "%s/rsa_key.pub", confbase);
+       }
 
        f = ask_and_open(pubname, "public RSA key");
        free(pubname);
@@ -392,7 +416,6 @@ static bool keygen(int bits) {
        fputc('\n', f);
        PEM_write_RSAPublicKey(f, rsa_key);
        fclose(f);
-       free(name);
 
        return true;
 }