usign-exec: return code fixes

[oweals/ucert.git] / usign-exec.c

diff --git a/usign-exec.c b/usign-exec.c
index 436c627356b0f79d64cdc68f475fd266357263e5..241d63077365ee1397d20f78f7b22bb47eb25baa 100644 (file)
--- a/usign-exec.c
+++ b/usign-exec.c
@@ -76,13 +76,10 @@ int usign_s(const char *msgfile, const char *seckeyfile, const char *sigfile, bo
                if (!quiet)
                        perror("Failed to execute usign");
                _exit(1);
-
-       default:
-               waitpid(pid, &status, 0);
-               return WEXITSTATUS(status);
        }
 
-       return -1;
+       waitpid(pid, &status, 0);
+       return WIFEXITED(status) ? WEXITSTATUS(status) : -1;
 }
 #else
 int usign_s(const char *msgfile, const char *seckeyfile, const char *sigfile, bool quiet) {
@@ -94,7 +91,7 @@ int usign_s(const char *msgfile, const char *seckeyfile, const char *sigfile, bo
  * call usign -F ... and set fingerprint returned
  * return WEXITSTATUS or -1 if fork fails
  */
-static int usign_f(char *fingerprint, const char *pubkeyfile, const char *seckeyfile, const char *sigfile, bool quiet) {
+static int usign_f(char fingerprint[17], const char *pubkeyfile, const char *seckeyfile, const char *sigfile, bool quiet) {
        int fds[2];
        pid_t pid;
        int status;
@@ -137,46 +134,45 @@ static int usign_f(char *fingerprint, const char *pubkeyfile, const char *seckey
                if (!quiet)
                        perror("Failed to execute usign");
                _exit(1);
+       }
 
-       default:
-               waitpid(pid, &status, 0);
-               status = WEXITSTATUS(status);
-               if (fingerprint && !WEXITSTATUS(status)) {
-                       ssize_t r;
-                       memset(fingerprint, 0, 17);
-                       r = read(fds[0], fingerprint, 17);
-                       if (r < 16)
-                               status = -1;
+       close(fds[1]);
 
-                       fingerprint[16] = '\0';
+       waitpid(pid, &status, 0);
+       status = WIFEXITED(status) ? WEXITSTATUS(status) : -1;
 
-               }
-               close(fds[0]);
-               close(fds[1]);
-               return status;
-       }
+       if (fingerprint && !status) {
+               ssize_t r;
+               memset(fingerprint, 0, 17);
+               r = read(fds[0], fingerprint, 17);
+               if (r < 16)
+                       status = -1;
 
-       return -1;
+               fingerprint[16] = '\0';
+
+       }
+       close(fds[0]);
+       return status;
 }
 
 /*
  * call usign -F -p ...
  */
-int usign_f_pubkey(char *fingerprint, const char *pubkeyfile, bool quiet) {
+int usign_f_pubkey(char fingerprint[17], const char *pubkeyfile, bool quiet) {
        return usign_f(fingerprint, pubkeyfile, NULL, NULL, quiet);
 }
 
 /*
  * call usign -F -s ...
  */
-int usign_f_seckey(char *fingerprint, const char *seckeyfile, bool quiet) {
+int usign_f_seckey(char fingerprint[17], const char *seckeyfile, bool quiet) {
        return usign_f(fingerprint, NULL, seckeyfile, NULL, quiet);
 }
 
 /*
  * call usign -F -x ...
  */
-int usign_f_sig(char *fingerprint, const char *sigfile, bool quiet) {
+int usign_f_sig(char fingerprint[17], const char *sigfile, bool quiet) {
        return usign_f(fingerprint, NULL, NULL, sigfile, quiet);
 }
 
@@ -237,11 +233,8 @@ int usign_v(const char *msgfile, const char *pubkeyfile,
                if (!quiet)
                        perror("Failed to execute usign");
                _exit(1);
-
-       default:
-               waitpid(pid, &status, 0);
-               return WEXITSTATUS(status);
        }
 
-       return -1;
+       waitpid(pid, &status, 0);
+       return WIFEXITED(status) ? WEXITSTATUS(status) : -1;
 }