irmd, tools: checks on binary

The bind tool and the auto_execute function will check if the binary
exists and is executable.

Return value of auto_execute corrected to pid_t

2 files changed, 25 insertions, 1 deletions

diff --git a/src/irmd/main.c b/src/irmd/main.c
index b4771b89..b14aa213 100644
--- a/src/irmd/main.c
+++ b/src/irmd/main.c
@@ -1613,9 +1613,21 @@ static int flow_dealloc(int port_id)
         return ret;
 }
 
-static int auto_execute(char ** argv)
+static pid_t auto_execute(char ** argv)
 {
         pid_t api;
+        struct stat s;
+
+        if (stat(argv[0], &s) != 0) {
+                LOG_WARN("Application %s does not exist.", argv[0]);
+                return -1;
+        }
+
+        if (!(s.st_mode & S_IXUSR)) {
+                LOG_WARN("Application %s is not executable.", argv[0]);
+                return -1;
+        }
+
         LOG_INFO("Executing %s.", argv[0]);
         api = fork();
         if (api == -1) {
diff --git a/src/tools/irm/irm_bind.c b/src/tools/irm/irm_bind.c
index 85e5bd3d..3fc1d5c5 100644
--- a/src/tools/irm/irm_bind.c
+++ b/src/tools/irm/irm_bind.c
@@ -22,6 +22,7 @@
 
 #include <stdio.h>
 #include <string.h>
+#include <sys/stat.h>
 
 #include <ouroboros/irm.h>
 
@@ -44,6 +45,7 @@ int do_bind(int argc, char ** argv)
         char * name = NULL;
         char * ap_name = NULL;
         uint16_t flags = 0;
+        struct stat s;
 
         while (argc > 0) {
                 if (matches(*argv, "name") == 0) {
@@ -77,5 +79,15 @@ int do_bind(int argc, char ** argv)
                 return -1;
         }
 
+        if (stat(ap_name, &s) != 0) {
+                printf("Application %s does not exist.\n\n", ap_name);
+                return -1;
+        }
+
+        if (!(s.st_mode & S_IXUSR)) {
+                printf("Application %s is not executable.\n\n", ap_name);
+                return -1;
+        }
+
         return irm_bind(name, ap_name, flags, argc, argv);
 }