1 files changed, 47 insertions, 0 deletions
diff --git a/support/findme.c b/support/findme.c
new file mode 100644
index 00000000..f2e764ef
--- /dev/null
+++ b/support/findme.c
@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#if HAVE_ALLOCA_H
+# include <alloca.h>
+#endif
+
+#include "findme.h"
+
+char * findProgramPath(char * argv0) {
+    char * path = getenv("PATH");
+    char * pathbuf;
+    char * start, * chptr;
+    char * buf;
+
+    /* If there is a / in the argv[0], it has to be an absolute
+       path */
+    if (strchr(argv0, '/'))
+	return strdup(argv0);
+
+    if (!path) return NULL;
+
+    start = pathbuf = alloca(strlen(path) + 1);
+    buf = malloc(strlen(path) + strlen(argv0) + 2);
+    strcpy(pathbuf, path);
+
+    chptr = NULL;
+    do {
+	if ((chptr = strchr(start, ':')))
+	    *chptr = '\0';
+	sprintf(buf, "%s/%s", start, argv0);
+
+	if (access(buf, X_OK))
+	    return buf;
+
+	if (chptr) 
+	    start = chptr + 1;
+	else
+	    start = NULL;
+    } while (start && *start);
+
+    free(buf);
+
+    return NULL;
+}