1 files changed, 156 insertions, 0 deletions
diff --git a/src/first_run.c b/src/first_run.c
new file mode 100644
index 0000000..842a3e0
--- /dev/null
+++ b/src/first_run.c
@@ -0,0 +1,156 @@
+/*
+ * active port forwarder - software for secure forwarding
+ * Copyright (C) 2003,2004,2005 jeremian <jeremian [at] poczta.fm>
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <pwd.h>
+
+static char* home_dir = NULL;
+static char* home_dir_key = NULL;
+static char* home_dir_cer = NULL;
+
+int
+create_apf_dir()
+{
+  int length;
+  struct stat buf;
+  struct passwd *user = getpwuid(getuid());
+  if (user == NULL) {
+    return 1; /* some problems witch fetching user info*/
+  }
+  if (user->pw_dir == NULL) {
+    return 2; /* home directory is not set? */
+  }
+  if (home_dir) {
+    free(home_dir);
+    home_dir = NULL;
+  }
+  length = strlen(user->pw_dir);
+  home_dir = calloc(1, length + 6);
+  if (home_dir == NULL) {
+    return 3; /* calloc failed */
+  }
+  strcpy(home_dir, user->pw_dir);
+  if (home_dir[length] == '/') {
+  strcpy(&home_dir[length], ".apf");
+  }
+  else {
+  strcpy(&home_dir[length], "/.apf");
+  }
+  if (stat(home_dir, &buf)) {
+    if (mkdir(home_dir, 0700)) {
+      return 4; /* creating directory failed */
+    }
+  }
+  return 0;
+}
+
+int
+generate_rsa_key(char** keyfile)
+{
+  int key_length, home_length, status;
+  char openssl_cmd[101];
+  struct stat buf;
+  /* check in local directory first */
+  if (stat(*keyfile, &buf) == 0) {
+    return 0;
+  }
+  /* check in home_dir */
+  key_length = strlen(*keyfile);
+  home_length = strlen(home_dir);
+  if (home_dir_key) {
+    free(home_dir_key);
+    home_dir_key = NULL;
+  }
+  home_dir_key = calloc(1, home_length + key_length + 2);
+  if (home_dir_key == NULL) {
+    return 1; /* calloc failed */
+  }
+  strcpy(home_dir_key, home_dir);
+  home_dir_key[home_length] = '/';
+  strcpy(&home_dir_key[home_length+1], *keyfile);
+  *keyfile = home_dir_key;
+  if (stat(home_dir_key, &buf) == 0) {
+    return 0;
+  }
+  /* have to generate the key */
+  if (snprintf(openssl_cmd, 101, "openssl genrsa -out %s 2048", home_dir_key) > 100) {
+    return 2; /* string is too long */
+  }
+  status = system(openssl_cmd);
+  if (status == -1) {
+    return -1;
+  }
+  return WEXITSTATUS(status);
+}
+
+int
+generate_certificate(char** cerfile, char* keyfile)
+{
+  int cer_length, home_length, status, tmp_fd1, tmp_fd2;
+  char openssl_cmd[301];
+  struct stat buf;
+  /* check in local directory first */
+  if (stat(*cerfile, &buf) == 0) {
+    return 0;
+  }
+  /* check in home_dir */
+  cer_length = strlen(*cerfile);
+  home_length = strlen(home_dir);
+  if (home_dir_cer) {
+    free(home_dir_cer);
+    home_dir_cer = NULL;
+  }
+  home_dir_cer = calloc(1, home_length + cer_length + 2);
+  if (home_dir_cer == NULL) {
+    return 1; /* calloc failed */
+  }
+  strcpy(home_dir_cer, home_dir);
+  home_dir_cer[home_length] = '/';
+  strcpy(&home_dir_cer[home_length+1], *cerfile);
+  *cerfile = home_dir_cer;
+  if (stat(home_dir_cer, &buf) == 0) {
+    return 0;
+  }
+  /* have to generate the certificate */
+  if (snprintf(openssl_cmd, 201, "echo -e \"pl\nWar-Maz\nOlsztyn\nSHEG\nUtils productions\njeremian\njeremian@poczta.fm\" | openssl req -new -x509 -key %s -out %s -days 1095", keyfile, home_dir_cer) > 300) {
+    return 2; /* string is too long */
+  }
+  tmp_fd1 = dup(STDOUT_FILENO);
+  tmp_fd2 = dup(STDERR_FILENO);
+  close(STDOUT_FILENO);
+  close(STDERR_FILENO);
+  status = system(openssl_cmd);
+  dup2(tmp_fd1, STDOUT_FILENO);
+  dup2(tmp_fd2, STDERR_FILENO);
+  close(tmp_fd1);
+  close(tmp_fd2);
+  if (status == -1) {
+    return -1;
+  }
+  return WEXITSTATUS(status);
+}