Write our own HTTP client instead of using curl. Not finished yet (missing URL parsin...

[cubemap] / parse.cpp

diff --git a/parse.cpp b/parse.cpp
index 0747afb9e495334e41fec2bd639695b7bb172a29..fca90a6d29b3397a42ad58a1babc25377e3eb8cd 100644 (file)
--- a/parse.cpp
+++ b/parse.cpp
@@ -141,3 +141,30 @@ int fetch_config_int(const vector<ConfigLine> &config, const string &keyword, in
        }
        return value;
 }
+
+#define MAX_REQUEST_SIZE 16384  /* 16 kB. */
+
+RequestParseStatus wait_for_double_newline(string *existing_data, const char *new_data, size_t new_data_size)
+{
+       // Guard against overlong requests gobbling up all of our space.
+       if (existing_data->size() + new_data_size > MAX_REQUEST_SIZE) {
+               return RP_OUT_OF_SPACE;
+       }       
+
+       // See if we have \r\n\r\n anywhere in the request. We start three bytes
+       // before what we just appended, in case we just got the final character.
+       size_t existing_data_bytes = existing_data->size();
+       existing_data->append(string(new_data, new_data + new_data_size));
+       
+       const size_t start_at = (existing_data_bytes >= 3 ? existing_data_bytes - 3 : 0);
+       const char *ptr = reinterpret_cast<char *>(
+               memmem(existing_data->data() + start_at, existing_data->size() - start_at,
+                      "\r\n\r\n", 4));
+       if (ptr == NULL) {
+               return RP_NOT_FINISHED_YET;
+       }
+       if (ptr != existing_data->data() + existing_data->size() - 4) {
+               return RP_EXTRA_DATA;
+       }
+       return RP_FINISHED;
+}