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Adds possibility to use include with wildcards and env vars

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This commit is contained in:
Felipe Zimmerle 2015-09-29 14:06:13 -07:00
parent cb9524ffd7
commit 900af2cd48
3 changed files with 42 additions and 17 deletions
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40
src/parser/seclang-scanner.ll
View File

@ -139,7 +139,7 @@ CONFIG_VALUE_REJECT (?i:Reject)
CONFIG_VALUE_ABORT (?i:Abort)
CONFIG_VALUE_WARN (?i:Warn)
CONFIG_VALUE_PATH [0-9A-Za-z_/\.\-]+
CONFIG_VALUE_PATH [0-9A-Za-z_/\.\-\*]+
AUDIT_PARTS [ABCDEFHJKIZ]+
CONFIG_VALUE_NUMBER [0-9]+
@ -373,31 +373,37 @@ CONFIG_DIR_UNICODE_MAP_FILE (?i:SecUnicodeMapFile)
%{ /* Include external configurations */ %}
{CONFIG_INCLUDE}[ ]{CONFIG_VALUE_PATH} {
const char *file = strchr(yytext, ' ') + 1;
yyin = fopen(file, "r" );
if (!yyin) {
BEGIN(INITIAL);
driver.error (*driver.loc.back(), "", yytext + std::string(": Not able to open file."));
throw yy::seclang_parser::syntax_error(*driver.loc.back(), "");
for (auto& s: ModSecurity::expandEnv(file, 0)) {
yyin = fopen(s.c_str(), "r" );
if (!yyin) {
BEGIN(INITIAL);
driver.error (*driver.loc.back(), "", s + std::string(": Not able to open file."));
throw yy::seclang_parser::syntax_error(*driver.loc.back(), "");
}
driver.ref.push_back(file);
driver.loc.push_back(new yy::location());
yypush_buffer_state(yy_create_buffer( yyin, YY_BUF_SIZE ));
}
driver.ref.push_back(file);
driver.loc.push_back(new yy::location());
yypush_buffer_state(yy_create_buffer( yyin, YY_BUF_SIZE ));
}
{CONFIG_INCLUDE}[ ]["]{CONFIG_VALUE_PATH}["] {
const char *file = strchr(yytext, ' ') + 1;
char *f = strdup(file + 1);
f[strlen(f)-1] = '\0';
yyin = fopen(f, "r" );
if (!yyin) {
BEGIN(INITIAL);
driver.error (*driver.loc.back(), "", yytext + std::string(": Not able to open file."));
throw yy::seclang_parser::syntax_error(*driver.loc.back(), "");
for (auto& s: ModSecurity::expandEnv(f, 0)) {
yyin = fopen(s.c_str(), "r" );
if (!yyin) {
BEGIN(INITIAL);
driver.error (*driver.loc.back(), "", s + std::string(": Not able to open file."));
throw yy::seclang_parser::syntax_error(*driver.loc.back(), "");
}
driver.ref.push_back(file);
driver.loc.push_back(new yy::location());
yypush_buffer_state(yy_create_buffer( yyin, YY_BUF_SIZE ));
}
free(f);
driver.ref.push_back(file);
driver.loc.push_back(new yy::location());
yypush_buffer_state(yy_create_buffer( yyin, YY_BUF_SIZE ));
}

18
src/utils.cc
View File

@ -19,6 +19,7 @@
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <wordexp.h>
#include <stdint.h>
@ -1022,5 +1023,22 @@ std::string toHexIfNeeded(const std::string &str) {
}
std::vector<std::string> expandEnv(const std::string& var, int flags)
{
std::vector<std::string> vars;
wordexp_t p;
if (wordexp(var.c_str(), &p, flags) == false) {
if (p.we_wordc) {
for (char** exp = p.we_wordv; *exp; ++exp) {
vars.push_back(exp[0]);
}
}
wordfree(&p);
}
return vars;
}
} // namespace ModSecurity

1
src/utils.h
View File

@ -47,6 +47,7 @@ namespace ModSecurity {
std::string phase_name(int x);
std::string limitTo(int amount, const std::string &str);
std::string toHexIfNeeded(const std::string &str);
std::vector<std::string> expandEnv(const std::string& var, int flags);
} // namespace ModSecurity
#define SRC_UTILS_H_