initial commit

parse_token.c

@@ -0,0 +1,34 @@
+#include <libowfat/stralloc.h>
+#include <libowfat/buffer.h>
+#include <libowfat/errmsg.h>
+#include <libowfat/str.h>
+
+#define AUTH_HEADER "Authorization: Bearer " 
+#define AUTH_HEADER_LEN str_len(AUTH_HEADER) 
+
+// TODO make case insensitive according to https://www.rfc-editor.org/info/rfc7230/#section-3.2
+int parse_token(buffer *b, stralloc *result)
+{
+  stralloc line;
+  int r;
+  stralloc_init(result);
+  for (;;) {
+    r=buffer_getnewline_sa(b,&line);
+    if (r==0) break;
+    if (r<0) { carpsys("read line"); goto err; } 
+
+    if (stralloc_starts(&line,AUTH_HEADER)) {
+      stralloc_chomp(&line); 
+      if (!stralloc_copyb(result, line.s+AUTH_HEADER_LEN,
+            line.len-AUTH_HEADER_LEN)
+      ) { carpsys("out of memory"); goto err; }
+      break;
+    }
+  }
+
+  stralloc_free(&line);
+  return 1;
+err:
+  stralloc_free(&line);
+  return 0;
+}