add header-value-parser.c

1 files changed, 111 insertions, 0 deletions

diff --git a/header-value-parser.c b/header-value-parser.c
new file mode 100644
index 0000000..d31deca
--- /dev/null
+++ b/header-value-parser.c
@@ -0,0 +1,111 @@
+#include "internal.h"
+
+//
+// header value parser
+//
+
+fhp_err_t
+fhp_header_value_parser_init(fhp_t * const fhp) {
+  uint32_t hash = fhp->header_name_hash;
+  fhp_header_value_parser_t parser = FHP_HEADER_VALUE_PARSER_NONE;
+  fhp_err_t err;
+
+  /* fprintf(
+    stderr,
+    "hashes: header = %u, env = %u, str = %u, str(lc) = %u\n",
+    hash,
+    fhp->env->hashes[FHP_STR_TRANSFER_ENCODING],
+    fhp_hash_string("Transfer-Encoding"),
+    fhp_lc_hash_string("Transfer-Encoding")
+  ); */
+
+  if (hash == fhp->env->hashes[FHP_STR_TRANSFER_ENCODING]) {
+    // set parser type
+    parser = FHP_HEADER_VALUE_PARSER_TRANSFER_ENCODING;
+
+    // init parser
+    if ((err = fhp_te_parser_init(&(fhp->parsers.te))) != FHP_OK)
+      return err;
+  } else if (hash == fhp->env->hashes[FHP_STR_CONTENT_LENGTH]) {
+    // set parser type
+    parser = FHP_HEADER_VALUE_PARSER_CONTENT_LENGTH;
+  } else {
+    // set default parser type
+    parser = FHP_HEADER_VALUE_PARSER_NONE;
+  }
+
+  // set value parser
+  fhp->header_value_parser = parser;
+
+  // return success
+  return FHP_OK;
+}
+
+fhp_err_t
+fhp_header_value_parser_push(
+  fhp_t * const fhp,
+  uint8_t * const buf,
+  size_t len
+) {
+  fhp_err_t r = FHP_OK;
+
+  switch (fhp->header_value_parser) {
+  case FHP_HEADER_VALUE_PARSER_TRANSFER_ENCODING:
+    r = fhp_te_parser_push(&(fhp->parsers.te), buf, len);
+    break;
+  case FHP_HEADER_VALUE_PARSER_CONTENT_LENGTH:
+    // TODO
+    r = FHP_OK;
+    break;
+  default:
+    // do nothing
+    r = FHP_OK;
+    break;
+  }
+
+  // return result
+  return r;
+}
+
+fhp_err_t
+fhp_header_value_parser_done(fhp_t * const fhp) {
+  fhp_err_t r = FHP_OK;
+
+  switch (fhp->header_value_parser) {
+  case FHP_HEADER_VALUE_PARSER_TRANSFER_ENCODING:
+    // finish parsing tes
+    if ((r = fhp_te_parser_done(&(fhp->parsers.te), &(fhp->num_tes))) != FHP_OK)
+      return r;
+
+    // check number of tes
+    if (fhp->num_tes > FHP_MAX_TRANSFER_ENCODINGS)
+      return FHP_ERR_TOO_MANY_TES;
+
+    // copy tes to context
+    if ((r = fhp_te_parser_get_tes(&(fhp->parsers.te), fhp->tes, FHP_MAX_TRANSFER_ENCODINGS)) != FHP_OK)
+      return r;
+
+    // notify callback
+    if (!fhp->cb(fhp, FHP_TOKEN_HEADER_TRANSFER_ENCODING, 0, 0))
+      return FHP_ERR_CB;
+
+    break;
+  case FHP_HEADER_VALUE_PARSER_CONTENT_LENGTH:
+    // TODO
+    r = FHP_OK;
+
+    break;
+  default:
+    // do nothing
+    r = FHP_OK;
+
+    break;
+  }
+
+  // clear header value parser
+  fhp->header_value_parser = FHP_HEADER_VALUE_PARSER_NONE;
+
+  // return result
+  return r;
+}
+