Print an error if filename is not found in html_include.

Normally when html_include cannot open the file it fails silently and
things can be a bit hard to figure out from just looking at apache's
log. This will be beneficial for those initially setting up their server
with cgit.

Signed-off-by: Harley Laue <losinggeneration@aim.com>
Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/html.c b/html.c
index 937b5e7..bddb04d 100644
--- a/html.c
+++ b/html.c
@@ -1,29 +1,30 @@
 /* html.c: helper functions for html output
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include <unistd.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
 #include <string.h>
+#include <errno.h>
 
 int htmlfd = STDOUT_FILENO;
 
 char *fmt(const char *format, ...)
 {
         static char buf[8][1024];
         static int bufidx;
         int len;
         va_list args;
 
         bufidx++;
         bufidx &= 7;
 
         va_start(args, format);
         len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
         va_end(args);
@@ -155,34 +156,37 @@ void html_link_close(void)
 {
         html("</a>");
 }
 
 void html_fileperm(unsigned short mode)
 {
         htmlf("%c%c%c", (mode & 4 ? 'r' : '-'),
               (mode & 2 ? 'w' : '-'), (mode & 1 ? 'x' : '-'));
 }
 
 int html_include(const char *filename)
 {
         FILE *f;
         char buf[4096];
         size_t len;
 
-        if (!(f = fopen(filename, "r")))
+        if (!(f = fopen(filename, "r"))) {
+                fprintf(stderr, "[cgit] Failed to include file %s: %s (%d).\n",
+                        filename, strerror(errno), errno);
                 return -1;
+        }
         while((len = fread(buf, 1, 4096, f)) > 0)
                 write(htmlfd, buf, len);
         fclose(f);
         return 0;
 }
 
 int hextoint(char c)
 {
         if (c >= 'a' && c <= 'f')
                 return 10 + c - 'a';
         else if (c >= 'A' && c <= 'F')
                 return 10 + c - 'A';
         else if (c >= '0' && c <= '9')
                 return c - '0';
         else
                 return -1;