ceph/src/rgw/rgw_tag.cc

   1
   2 #include <map>
   3 #include <string>
   4
   5 #include <common/errno.h>
   6 #include <boost/algorithm/string.hpp>
   7
   8 #include "rgw_tag.h"
   9
  10 static constexpr uint32_t MAX_OBJ_TAGS=10;
  11 static constexpr uint32_t MAX_TAG_KEY_SIZE=128;
  12 static constexpr uint32_t MAX_TAG_VAL_SIZE=256;
  13
  14 bool RGWObjTags::add_tag(const string&key, const string& val){
  15   return tag_map.emplace(std::make_pair(key,val)).second;
  16 }
  17
  18 int RGWObjTags::check_and_add_tag(const string&key, const string& val){
  19   if (tag_map.size() == MAX_OBJ_TAGS ||
  20       key.size() > MAX_TAG_KEY_SIZE ||
  21       val.size() > MAX_TAG_VAL_SIZE ||
  22       key.size() == 0){
  23     return -ERR_INVALID_TAG;
  24   }
  25
  26   // if we get a conflicting key, either the XML is malformed or the user
  27   // supplied an invalid string
  28   if (!add_tag(key,val))
  29     return -EINVAL;
  30
  31   return 0;
  32 }
  33
  34 int RGWObjTags::set_from_string(const string& input){
  35   int ret=0;
  36   vector <string> kvs;
  37   boost::split(kvs, input, boost::is_any_of("&"));
  38   for (const auto& kv: kvs){
  39     auto p = kv.find("=");
  40     string key,val;
  41     if (p != string::npos) {
  42       ret = check_and_add_tag(url_decode(kv.substr(0,p)),
  43                               url_decode(kv.substr(p+1)));
  44     } else {
  45       ret = check_and_add_tag(url_decode(kv));
  46     }
  47
  48     if (ret < 0)
  49       return ret;
  50   }
  51   return ret;
  52 }