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Commit f04ce6bb authored by Francis Dupont's avatar Francis Dupont Committed by Tomek Mrugalski
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[5014_phase2] Began to write tests (and of course found and fixed some problems)

parent 3c82e50a
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Showing with 190 additions and 31 deletions
src/bin/dhcp6/Makefile.am
View file @ f04ce6bb
......@@ -121,6 +121,9 @@ parser: dhcp6_lexer.cc location.hh position.hh stack.hh dhcp6_parser.cc dhcp6_pa
# It can be used to manually follow what's going on in the parser.
# This is especially useful if yydebug_ is set to 1 as that variable
# will cause parser to print out its internal state.
# Call flex with -s to check that the default rule can be suppressed
# Call bison with -W to get warnings like unmarked empty rules
# Note C++11 deprecated register still used by flex < 2.6.0
location.hh position.hh stack.hh dhcp6_parser.cc dhcp6_parser.h: dhcp6_parser.yy
$(YACC) --defines=dhcp6_parser.h --report=all --report-file=dhcp6_parser.report -o dhcp6_parser.cc dhcp6_parser.yy
......
src/bin/dhcp6/dhcp6_lexer.ll
View file @ f04ce6bb
......@@ -42,7 +42,7 @@ std::vector<struct yy_buffer_state*> states;
bool start_token_flag = false;
isc::dhcp::Parser6Context::ParserType start_token_value;
int comment_start_line = 0;
unsigned int comment_start_line = 0;
};
......@@ -63,6 +63,9 @@ int comment_start_line = 0;
/* batch means that we'll never use the generated lexer interactively. */
%option batch
/* avoid to get static global variables to remain with C++. */
/* in last resort %option reentrant */
/* Enables debug mode. To see the debug messages, one needs to also set
yy_flex_debug to 1, then the debug messages will be printed on stderr. */
%option debug
......@@ -72,11 +75,6 @@ int comment_start_line = 0;
be on the safe side and keep it. */
%option noinput
/* This line tells flex to track the line numbers. It's not really that
useful for client classes, which typically are one-liners, but it may be
useful in more complex cases. */
%option yylineno
%x COMMENT
%x DIR_ENTER DIR_INCLUDE DIR_EXIT
......@@ -112,6 +110,7 @@ JSONString \"{JSONStringCharacter}*\"
if (start_token_flag) {
start_token_flag = false;
BEGIN(0);
switch (start_token_value) {
case Parser6Context::PARSER_DHCP6:
return isc::dhcp::Dhcp6Parser::make_TOPLEVEL_DHCP6(loc);
......@@ -128,13 +127,13 @@ JSONString \"{JSONStringCharacter}*\"
"/*" {
BEGIN(COMMENT);
comment_start_line = yylineno;
comment_start_line = loc.end.line;;
}
<COMMENT>"*/" BEGIN(INITIAL);
<COMMENT>. ;
<COMMENT><<EOF>> {
isc_throw(isc::BadValue, "Comment not closed. (/* in line " << comment_start_line);
isc_throw(Dhcp6ParseError, "Comment not closed. (/* in line " << comment_start_line);
}
"<?" BEGIN(DIR_ENTER);
......@@ -149,7 +148,7 @@ JSONString \"{JSONStringCharacter}*\"
driver.includeFile(tmp);
}
<DIR_ENTER,DIR_INCLUDE,DIR_EXIT><<EOF>> {
isc_throw(isc::BadValue, "Directive not closed.");
isc_throw(Dhcp6ParseError, "Directive not closed.");
}
<DIR_EXIT>"?>" BEGIN(INITIAL);
......@@ -213,7 +212,8 @@ JSONString \"{JSONStringCharacter}*\"
\"type\" {
switch(driver.ctx_) {
case isc::dhcp::Parser6Context::DATABASE:
case isc::dhcp::Parser6Context::LEASE_DATABASE:
case isc::dhcp::Parser6Context::HOSTS_DATABASE:
case isc::dhcp::Parser6Context::SERVER_ID:
return isc::dhcp::Dhcp6Parser::make_TYPE(loc);
default:
......@@ -223,7 +223,8 @@ JSONString \"{JSONStringCharacter}*\"
\"user\" {
switch(driver.ctx_) {
case isc::dhcp::Parser6Context::DATABASE:
case isc::dhcp::Parser6Context::LEASE_DATABASE:
case isc::dhcp::Parser6Context::HOSTS_DATABASE:
return isc::dhcp::Dhcp6Parser::make_USER(loc);
default:
return isc::dhcp::Dhcp6Parser::make_STRING("user", loc);
......@@ -232,7 +233,8 @@ JSONString \"{JSONStringCharacter}*\"
\"password\" {
switch(driver.ctx_) {
case isc::dhcp::Parser6Context::DATABASE:
case isc::dhcp::Parser6Context::LEASE_DATABASE:
case isc::dhcp::Parser6Context::HOSTS_DATABASE:
return isc::dhcp::Dhcp6Parser::make_PASSWORD(loc);
default:
return isc::dhcp::Dhcp6Parser::make_STRING("password", loc);
......@@ -241,7 +243,8 @@ JSONString \"{JSONStringCharacter}*\"
\"host\" {
switch(driver.ctx_) {
case isc::dhcp::Parser6Context::DATABASE:
case isc::dhcp::Parser6Context::LEASE_DATABASE:
case isc::dhcp::Parser6Context::HOSTS_DATABASE:
return isc::dhcp::Dhcp6Parser::make_HOST(loc);
default:
return isc::dhcp::Dhcp6Parser::make_STRING("host", loc);
......@@ -250,7 +253,8 @@ JSONString \"{JSONStringCharacter}*\"
\"persist\" {
switch(driver.ctx_) {
case isc::dhcp::Parser6Context::DATABASE:
case isc::dhcp::Parser6Context::LEASE_DATABASE:
case isc::dhcp::Parser6Context::HOSTS_DATABASE:
case isc::dhcp::Parser6Context::SERVER_ID:
return isc::dhcp::Dhcp6Parser::make_PERSIST(loc);
default:
......@@ -260,7 +264,8 @@ JSONString \"{JSONStringCharacter}*\"
\"lfc-interval\" {
switch(driver.ctx_) {
case isc::dhcp::Parser6Context::DATABASE:
case isc::dhcp::Parser6Context::LEASE_DATABASE:
case isc::dhcp::Parser6Context::HOSTS_DATABASE:
return isc::dhcp::Dhcp6Parser::make_LFC_INTERVAL(loc);
default:
return isc::dhcp::Dhcp6Parser::make_STRING("lfc-interval", loc);
......@@ -329,7 +334,8 @@ JSONString \"{JSONStringCharacter}*\"
\"name\" {
switch(driver.ctx_) {
case isc::dhcp::Parser6Context::DATABASE:
case isc::dhcp::Parser6Context::LEASE_DATABASE:
case isc::dhcp::Parser6Context::HOSTS_DATABASE:
case isc::dhcp::Parser6Context::OPTION_DATA:
case isc::dhcp::Parser6Context::CLIENT_CLASSES:
case isc::dhcp::Parser6Context::CLIENT_CLASS:
......
src/bin/dhcp6/dhcp6_parser.yy
View file @ f04ce6bb
......@@ -225,6 +225,15 @@ not_empty_list: value {
// ---- syntax checking parser starts here -----------------------------
// Unknown keyword in a map
unknown_map_entry: STRING COLON {
const std::string& where = ctx.context_name();
const std::string& keyword = $1;
error(@1,
"got unexpected keyword \"" + keyword + "\" in " + where + " map.");
}
// This defines the top-level { } that holds Dhcp6, Dhcp4, DhcpDdns or Logging
// objects.
// ctx_ = CONFIG
......@@ -288,6 +297,7 @@ global_param: preferred_lifetime
| server_id
| dhcp4o6_port
| dhcp_ddns
| unknown_map_entry
;
preferred_lifetime: PREFERRED_LIFETIME COLON INTEGER {
......@@ -334,7 +344,7 @@ lease_database: LEASE_DATABASE {
ElementPtr i(new MapElement());
ctx.stack_.back()->set("lease-database", i);
ctx.stack_.push_back(i);
ctx.enter(ctx.DATABASE);
ctx.enter(ctx.LEASE_DATABASE);
} COLON LCURLY_BRACKET database_map_params RCURLY_BRACKET {
ctx.stack_.pop_back();
ctx.leave();
......@@ -344,7 +354,7 @@ hosts_database: HOSTS_DATABASE {
ElementPtr i(new MapElement());
ctx.stack_.back()->set("hosts-database", i);
ctx.stack_.push_back(i);
ctx.enter(ctx.DATABASE);
ctx.enter(ctx.HOSTS_DATABASE);
} COLON LCURLY_BRACKET database_map_params RCURLY_BRACKET {
ctx.stack_.pop_back();
ctx.leave();
......@@ -360,7 +370,8 @@ database_map_param: type
| host
| name
| persist
| lfc_interval;
| lfc_interval
| unknown_map_entry
;
type: TYPE {
......@@ -501,7 +512,7 @@ hooks_library: LCURLY_BRACKET {
};
hooks_params: hooks_param
| hooks_params hooks_param
| hooks_params COMMA hooks_param
;
hooks_param: LIBRARY {
......@@ -600,6 +611,7 @@ subnet6_param: option_data_list
| id
| client_class
| reservations
| unknown_map_entry
;
subnet: SUBNET {
......@@ -680,6 +692,7 @@ option_data_param: option_data_name
| option_data_code
| option_data_space
| option_data_csv_format
| unknown_map_entry
;
......@@ -748,6 +761,7 @@ pool_params: pool_param
pool_param: pool_entry
| option_data_list
| unknown_map_entry
;
pool_entry: POOL {
......@@ -797,6 +811,7 @@ pd_pool_param: pd_prefix
| pd_prefix_len
| pd_delegated_len
| option_data_list
| unknown_map_entry
;
pd_prefix: PREFIX {
......@@ -862,6 +877,7 @@ reservation_param: duid
| hw_address
| hostname
| option_data_list
| unknown_map_entry
;
ip_addresses: IP_ADDRESSES {
......@@ -954,6 +970,7 @@ not_empty_client_class_params: client_class_param
client_class_param: client_class_name
| client_class_test
| option_data_list
| unknown_map_entry
;
client_class_name: name;
......@@ -990,6 +1007,7 @@ server_id_param: type
| htype
| enterprise_id
| persist
| unknown_map_entry
;
htype: HTYPE COLON INTEGER {
......@@ -1082,6 +1100,7 @@ logger_param: name
| output_options_list
| debuglevel
| severity
| unknown_map_entry
;
debuglevel: DEBUGLEVEL COLON INTEGER {
......@@ -1146,6 +1165,7 @@ dhcp_ddns_params: dhcp_ddns_param
dhcp_ddns_param: enable_updates
| qualifying_suffix
| unknown_map_entry
;
enable_updates: ENABLE_UPDATES COLON BOOLEAN {
......
src/bin/dhcp6/parser_context.cc
View file @ f04ce6bb
......@@ -40,7 +40,7 @@ Parser6Context::parseString(const std::string& str, ParserType parser_type)
if (stack_.size() == 1) {
return (stack_[0]);
} else {
isc_throw(BadValue, "Expected exactly one terminal Element expected, found "
isc_throw(Dhcp6ParseError, "Expected exactly one terminal Element expected, found "
<< stack_.size());
}
}
......@@ -49,7 +49,7 @@ isc::data::ConstElementPtr
Parser6Context::parseFile(const std::string& filename, ParserType parser_type) {
FILE* f = fopen(filename.c_str(), "r");
if (!f) {
isc_throw(BadValue, "Unable to open file " << filename);
isc_throw(Dhcp6ParseError, "Unable to open file " << filename);
}
scanFileBegin(f, filename, parser_type);
......@@ -65,7 +65,7 @@ Parser6Context::parseFile(const std::string& filename, ParserType parser_type) {
if (stack_.size() == 1) {
return (stack_[0]);
} else {
isc_throw(BadValue, "Expected exactly one terminal Element expected, found "
isc_throw(Dhcp6ParseError, "Expected exactly one terminal Element expected, found "
<< stack_.size());
}
}
......@@ -74,19 +74,19 @@ Parser6Context::parseFile(const std::string& filename, ParserType parser_type) {
void
Parser6Context::error(const isc::dhcp::location& loc, const std::string& what)
{
isc_throw(EvalParseError, loc << ": " << what);
isc_throw(Dhcp6ParseError, loc << ": " << what);
}
void
Parser6Context::error (const std::string& what)
{
isc_throw(EvalParseError, what);
isc_throw(Dhcp6ParseError, what);
}
void
Parser6Context::fatal (const std::string& what)
{
isc_throw(Unexpected, what);
isc_throw(Dhcp6ParseError, what);
}
void
......@@ -108,5 +108,56 @@ Parser6Context::leave()
cstack_.pop_back();
}
const std::string
Parser6Context::context_name()
{
switch (ctx_) {
case NO_KEYWORD:
return ("__no keyword__");
case CONFIG:
return ("__config__");
case DHCP6:
return ("Dhcp6");
case LOGGING:
return ("Logging");
case INTERFACES_CONFIG:
return ("interfaces-config");
case LEASE_DATABASE:
return ("lease-database");
case HOSTS_DATABASE:
return ("hosts-database");
case MAC_SOURCES:
return ("mac-sources");
case HOST_RESERVATION_IDENTIFIERS:
return ("host-reservation-identifiers");
case HOOKS_LIBRARIES:
return ("hooks-librairies");
case SUBNET6:
return ("subnet6");
case OPTION_DATA:
return ("option-data");
case CLIENT_CLASSES:
return ("client-classes");
case SERVER_ID:
return ("server-id");
case DHCP_DDNS:
return ("dhcp-ddns");
case POOLS:
return ("pools");
case PD_POOLS:
return ("pd-pools");
case RESERVATIONS:
return ("reservations");
case CLIENT_CLASS:
return ("client-class");
case LOGGERS:
return ("loggers");
case OUTPUT_OPTIONS:
return ("output-options");
default:
return ("__unknown__");
}
}
};
};
src/bin/dhcp6/parser_context.h
View file @ f04ce6bb
......@@ -22,10 +22,10 @@ YY_DECL;
namespace isc {
namespace dhcp {
/// @brief Evaluation error exception raised when trying to parse an axceptions.
class EvalParseError : public isc::Exception {
/// @brief Evaluation error exception raised when trying to parse.
class Dhcp6ParseError : public isc::Exception {
public:
EvalParseError(const char* file, size_t line, const char* what) :
Dhcp6ParseError(const char* file, size_t line, const char* what) :
isc::Exception(file, line, what) { };
};
......@@ -86,7 +86,7 @@ public:
/// @brief Error handler
///
/// This is a simplified error reporting tool for possible future
/// cases when the EvalParser is not able to handle the packet.
/// cases when the Dhcp6Parser is not able to handle the packet.
void error(const std::string& what);
/// @brief Fatal error handler
......@@ -107,7 +107,8 @@ public:
LOGGING,
/// Dhcp6
INTERFACES_CONFIG,
DATABASE,
LEASE_DATABASE,
HOSTS_DATABASE,
MAC_SOURCES,
HOST_RESERVATION_IDENTIFIERS,
HOOKS_LIBRARIES,
......@@ -138,6 +139,9 @@ public:
/// @throw isc::Unexpected if unbalanced
void leave();
/// @brief Get the syntactix context name
const std::string context_name();
private:
/// @brief Flag determining scanner debugging.
bool trace_scanning_;
......
src/bin/dhcp6/tests/parser_unittest.cc
View file @ f04ce6bb
......@@ -247,4 +247,79 @@ TEST(ParserTest, file) {
}
}
void testError(const std::string& txt,
Parser6Context::ParserType parser_type,
const std::string& msg)
{
try {
Parser6Context ctx;
ConstElementPtr parsed = ctx.parseString(txt, parser_type);
FAIL() << "Expected Dhcp6ParseError but nothing was raised";
}
catch (const Dhcp6ParseError& ex) {
EXPECT_EQ(msg, ex.what());
}
catch (...) {
FAIL() << "Expected Dhcp6ParseError but something else was raised";
}
}
// Check lexer errors
TEST(ParserTest, lexerErrors) {
testError("",
Parser6Context::PARSER_GENERIC_JSON,
"<string>:1.1: syntax error, unexpected end of file, "
"expecting {");
testError(" ",
Parser6Context::PARSER_GENERIC_JSON,
"<string>:1.2: syntax error, unexpected end of file, "
"expecting {");
testError("\n",
Parser6Context::PARSER_GENERIC_JSON,
"<string>:2.1: syntax error, unexpected end of file, "
"expecting {");
testError("# nothing\n",
Parser6Context::PARSER_GENERIC_JSON,
"<string>:2.1: syntax error, unexpected end of file, "
"expecting {");
testError(" #\n",
Parser6Context::PARSER_GENERIC_JSON,
"<string>:2.1: syntax error, unexpected end of file, "
"expecting {");
testError("// nothing\n",
Parser6Context::PARSER_GENERIC_JSON,
"<string>:2.1: syntax error, unexpected end of file, "
"expecting {");
testError("/* nothing */\n",
Parser6Context::PARSER_GENERIC_JSON,
"<string>:2.1: syntax error, unexpected end of file, "
"expecting {");
testError("/* no\nthing */\n",
Parser6Context::PARSER_GENERIC_JSON,
"<string>:3.1: syntax error, unexpected end of file, "
"expecting {");
testError("/* no\nthing */\n\n",
Parser6Context::PARSER_GENERIC_JSON,
"<string>:4.1: syntax error, unexpected end of file, "
"expecting {");
testError("/* nothing\n",
Parser6Context::PARSER_GENERIC_JSON,
"Comment not closed. (/* in line 1");
fprintf(stderr, "got 124?\n");
testError("/**/\n\n\n/* nothing\n",
Parser6Context::PARSER_GENERIC_JSON,
"Comment not closed. (/* in line 4");
testError("<?\n",
Parser6Context::PARSER_GENERIC_JSON,
"Directive not closed.");
testError("<?include\n",
Parser6Context::PARSER_GENERIC_JSON,
"Directive not closed.");
string file = string(CFG_EXAMPLES) + "/" + "stateless.json";
fprintf(stderr, "doing include\n");
testError("<?include \"" + file + "\"\n",
Parser6Context::PARSER_GENERIC_JSON,
"Directive not closed.");
}
};
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