Add get_line_terminator to socket_helper

common/socket_helper.c

@@ -3,6 +3,30 @@
 #include <string.h>
 #include <unistd.h>
 
+/**
+ * Get the next \n in a \r\n sequence within the buffer.
+ *
+ * @param buffer The buffer to scan.
+ * @param buffer_size The max size of the buffer
+ *
+ * @return A pointer to the terminating \n in the \r\n sequence.
+ */
+static const char *get_line_terminator(const char *buffer, int buffer_size) {
+    const char *prev_cursor = NULL;
+    const char *cursor = buffer;
+    for (int i = 0; i < buffer_size; (i++, cursor++)) {
+        if (*cursor == '\0') {
+            return NULL;
+        }
+        if (prev_cursor != NULL && *prev_cursor == '\r' && *cursor == '\n') {
+            return cursor;
+        }
+        prev_cursor = cursor;
+    }
+
+    return NULL;
+}
+
 char *get_all_remote_parts(int socket_fd) {
     int current_size = BUFFER_SIZE;
     char *result = NULL;