From c45bd4afdf2450a222132fd8fe8aa33e16f181fb Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Tue, 8 Jul 2014 23:47:17 -0400
Subject: [PATCH] chdir() to where the binary is running from before doing
 anything else.

This is so we can find our script files, etc, regardless of where the
 program is run from.

Note that this means your 1Password symlink needs to live where the binary
 does, at least until we let you specify one elsewhere.
---
 1pass.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/1pass.c b/1pass.c
index be78577..56125aa 100644
--- a/1pass.c
+++ b/1pass.c
@@ -623,8 +623,62 @@ static void initSignals(void)
 } // initSignals
 
 
+// this was from PhysicsFS ( https://icculus.org/physfs/ ), zlib license.
+static char *readSymLink(const char *path)
+{
+    ssize_t len = 64;
+    ssize_t rc = -1;
+    char *retval = NULL;
+
+    while (1)
+    {
+         char *ptr = (char *) realloc(retval, (size_t) len);
+         if (ptr == NULL)
+             break;   // out of memory.
+         retval = ptr;
+
+         rc = readlink(path, retval, len);
+         if (rc == -1)
+             break;  // not a symlink, i/o error, etc.
+
+         else if (rc < len)
+         {
+             retval[rc] = '\0';  // readlink doesn't null-terminate.
+             return retval;  // we're good to go.
+         } // else if
+
+         len *= 2;  // grow buffer, try again.
+    } // while
+
+    if (retval != NULL)
+        free(retval);
+    return NULL;
+} // readSymLink
+
+
+static void chdirToApp(void)
+{
+    char *ptr;
+    char *path = readSymLink("/proc/self/exe");
+    
+    if (path == NULL)
+        return;  // maybe we're already there, fail later if not.
+
+    ptr = strrchr(path, '/');
+    if (ptr != NULL)
+    {
+        *ptr = '\0';
+        if (chdir(path) == -1)
+            fprintf(stderr, "Couldn't chdir() to app directory?! %s\n", strerror(errno));
+    } // if
+
+    free(path);
+} // chdirToApp
+
+
 int main(int argc, char **argv)
 {
+    chdirToApp();
     initSignals();
     initPowermate(&argc, argv);
     gtk_init(&argc, &argv);