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/***************************************************************************
* Copyright (C) 2008 by Alexander Block *
* ablock@blocksoftware.net *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "config.h"
#include "common/expr.h"
#include "common/args.h"
#include "common/buf.h"
#include "common/error.h"
#include "common/locate.h"
#include "hexec/hexec.h"
#include "libhexec-hook.h"
#include <stdlib.h>
#include <ctype.h>
#include <stdbool.h>
#include <string.h>
#include <fnmatch.h>
#include <assert.h>
#include <unistd.h>
#include <sys/wait.h>
#include <libgen.h>
// found in expr-eval-exec.c
int eval_exec(const char* path, struct args_t* args, struct args_t* env, struct hexec_buf* buf, struct hexec_expr* e, int* last_exec_status);
static struct hexec_expr* to_expr(struct hexec_buf* buf, int p)
{
return (struct hexec_expr*)(buf->buf + p);
}
static int eval_path(const char* path, struct args_t* args, struct args_t* env, struct hexec_buf* buf, struct hexec_expr* e)
{
int flags = 0;
if(e->case_insensitive)
flags |= FNM_CASEFOLD;
int ret = fnmatch(buf->buf + e->str, path, flags);
if(ret == 0)
return HEXEC_EXPR_RESULT_MATCH;
if(ret == FNM_NOMATCH)
return HEXEC_EXPR_RESULT_NOMATCH;
return HEXEC_EXPR_RESULT_ERROR;
}
static int eval_name(const char* name, struct args_t* args, struct args_t* env, struct hexec_buf* buf, struct hexec_expr* e)
{
char* name_copy = strdup(name);
char* base_name = basename(name_copy);
//hexec_log("eval_name: n=%s, bn=%s, fn=%s\n", name, base_name, buf->buf + e->str);
int flags = 0;
if(e->case_insensitive)
flags |= FNM_CASEFOLD;
int ret = fnmatch(buf->buf + e->str, base_name, flags);
free(name_copy);
if(ret == 0)
return HEXEC_EXPR_RESULT_MATCH;
if(ret == FNM_NOMATCH)
return HEXEC_EXPR_RESULT_NOMATCH;
return HEXEC_EXPR_RESULT_ERROR;
}
static int eval_contains(const char* name, struct args_t* args, struct args_t* env, struct hexec_buf* buf, struct hexec_expr* e)
{
if(e->case_insensitive)
{
char* name_copy = strdup(name);
for(int i = 0; name_copy[i]; i++)
name_copy[i] = tolower(name_copy[i]);
//hexec_log("icontains: %s, %s\n", name_copy, buf->buf + e->str);
bool match = strstr(name_copy, buf->buf + e->str) != NULL;
free(name_copy);
if(match)
return HEXEC_EXPR_RESULT_MATCH;
return HEXEC_EXPR_RESULT_NOMATCH;
}
else
{
if(strstr(name, buf->buf + e->str))
return HEXEC_EXPR_RESULT_MATCH;
return HEXEC_EXPR_RESULT_NOMATCH;
}
}
static int eval_print(const char* path, struct args_t* args, struct args_t* env, struct hexec_buf* buf, struct hexec_expr* e)
{
//hexec_log("eval_print\n");
//hexec_lock_log();
//hexec_log("args = ");
hexec_args_print(args);
hexec_log("\n");
//hexec_unlock_log();
return HEXEC_EXPR_RESULT_NOMATCH;
}
int hexec_expr_eval(const char* path, struct args_t* args, struct args_t* env, struct hexec_buf* buf, int e, int* last_exec_status)
{
struct hexec_expr* ex = to_expr(buf, e);
//hexec_log("eval: %d\n", ex->type);
switch(ex->type)
{
case hexec_expr_not: {
int res = hexec_expr_eval(path, args, env, buf, ex->expr1, last_exec_status);
if(res == HEXEC_EXPR_RESULT_MATCH)
return HEXEC_EXPR_RESULT_NOMATCH;
if(res == HEXEC_EXPR_RESULT_NOMATCH)
return HEXEC_EXPR_RESULT_MATCH;
return HEXEC_EXPR_RESULT_ERROR;
}
case hexec_expr_and: {
int leftRes = hexec_expr_eval(path, args, env, buf, ex->expr1, last_exec_status);
if(leftRes == HEXEC_EXPR_RESULT_MATCH)
return hexec_expr_eval(path, args, env, buf, ex->expr2, last_exec_status);
return leftRes;
}
case hexec_expr_or: {
int leftRes = hexec_expr_eval(path, args, env, buf, ex->expr1, last_exec_status);
if(leftRes == HEXEC_EXPR_RESULT_MATCH)
return HEXEC_EXPR_RESULT_MATCH;
return hexec_expr_eval(path, args, env, buf, ex->expr2, last_exec_status);
}
case hexec_expr_action_print:
return eval_print(path, args, env, buf, ex);
case hexec_expr_path:
return eval_path(path, args, env, buf, ex);
case hexec_expr_name:
return eval_name(path, args, env, buf, ex);
case hexec_expr_contains:
return eval_contains(path, args, env, buf, ex);
case hexec_expr_action_exec:
return eval_exec(path, args, env, buf, ex, last_exec_status);
}
hexec_log("unknown expr: %d\n", ex->type);
}
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