Implement HEAD support

1 files changed, 33 insertions, 0 deletions

diff --git a/page.c b/page.c
index f3856a9..02049a3 100644
--- a/page.c
+++ b/page.c
@@ -2199,3 +2199,36 @@ end:
 
     return ret;
 }
+
+int page_head_resource(struct http_response *const r, const char *const res)
+{
+    struct stat sb;
+
+    if (stat(res, &sb))
+    {
+        if (errno == ENOENT || errno == ENOTDIR)
+            return page_not_found(r);
+        else
+        {
+            fprintf(stderr, "%s: stat(2) %s: %s\n",
+                __func__, res, strerror(errno));
+            return -1;
+        }
+    }
+
+    const mode_t m = sb.st_mode;
+
+    if (!S_ISDIR(m) && !S_ISREG(m))
+    {
+        fprintf(stderr, "%s: unexpected st_mode %jd\n", __func__, (intmax_t)m);
+        return -1;
+    }
+
+    *r = (const struct http_response)
+    {
+        .status = HTTP_STATUS_OK,
+        .n = sb.st_size
+    };
+
+    return 0;
+}