From 1adde65db245ec1fca752cfee4c198badf40fb5f Mon Sep 17 00:00:00 2001
From: Jakub Sławiński
Date: Tue, 15 Mar 2005 01:22:55 +0100
Subject: v0.6

  - Fixed: default password incompatibilities from config file
  - Added: "client's id" option
  - Lightly Modified: verbose mode
  - Added: temporary listen ports
  - Fixed: bug in printing "client's id"
  - Added: 'dateformat' option to set format of the date in the logs
  - Modified: command line option and config file behaviour
  - Added: logging to a socket
  - Fixed: parsing config file
  - Fixed: major bug in packet buffering
  - Added: several clients-users in one realm
  - Modified: default hostname used by afserver
  - Modified: server listening behaviour (for clients)
  - Fixed: bug in checking options values
  - Modified: verbose mode
  - Modified: client initial connection to server
  - Added: connection time / uptime statistics
  - Added: first version of remote administration (statistics only)
  - Fixed: major bug in remove_client routine
  - Added: 'raclients' option
  - Added: use of automake/autoconf
  - Added: creating ~/.apf directory
  - Modified: the way of creating/managing keys/certificates
  - Added: 'dnslookups' option
  - Modified: usage functions
  - Fixed: no handling of missing 'listen' option after 'newrealm' in config file
  - Added: 'quit' command in remote administration mode
  - Modified: logging error messages during initialization
  - Modified: 'newrealm' changed to 'realm' in config file
  - Added: realm names
  - Modified: connection time / uptime
  - Added: client names / unique numbers
  - Added: user unique numbers
  - Fixed: segmentation fault after 'quit' command
---
 src/file.c | 373 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 373 insertions(+)
 create mode 100644 src/file.c

(limited to 'src/file.c')

diff --git a/src/file.c b/src/file.c
new file mode 100644
index 0000000..e4cde62
--- /dev/null
+++ b/src/file.c
@@ -0,0 +1,373 @@
+/*
+ * 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 "file.h"
+#include "activefor.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <ctype.h>
+
+int
+parse_line(char* buff, char* tab1, char* tab2)
+{
+  int state, i, j, lastDot;
+  state = i = j = 0;
+  lastDot = -1;
+  while (buff[i] != 0) {
+    if (buff[i] == '#') {
+      if ((i > 0) && (buff[i-1] == '\\')) {
+        --j;
+      }
+      else {
+        break;
+      }
+    }
+    switch (state) {
+      case 0: { /* before option name */
+                if (!isspace(buff[i])) {
+                  tab1[j] = buff[i];
+                  j = 1;
+                  state = 1;
+                }
+                break;
+              }
+      case 1: { /* option */
+                if (isspace(buff[i])) {
+                  tab1[j] = 0;
+                  state = 2;
+                  j = 0;
+                }
+                else {
+                  tab1[j] = buff[i];
+                  ++j;
+                }
+                break;
+              }
+      case 2: { /* before option value */
+                if (!isspace(buff[i])) {
+                  if (buff[i] != '.') {
+                    tab2[j] = buff[i];
+                    j = 1;
+                  }
+                  state = 3;
+                }
+                break;
+              }
+      case 3: { /* option value */
+                if (buff[i] == '.') {
+                  lastDot = j;
+                }
+                else if (!isspace(buff[i])) {
+                  lastDot = -1;
+                }
+                else if (lastDot == -1) {
+                  lastDot = j;
+                }
+                tab2[j] = buff[i];
+                ++j;
+                break;
+              }
+    }
+    ++i;
+  }
+  if (lastDot != -1) {
+    tab2[lastDot] = 0;
+  }
+  if (state == 3) {
+    return 2;
+  }
+  if (state == 0) {
+    return 0;
+  }
+  return 1;
+}
+
+ConfigurationT
+parsefile(char* name, int* status)
+{
+  static ConfigurationT cfg;
+  FILE* file = NULL;
+  int state, i, n, listencount, managecount;
+  char buff[256];
+  char helpbuf1[256];
+  char helpbuf2[256];
+
+  *status = 1;
+
+  memset(buff, 0, 256);
+	
+  cfg.certif = NULL;
+  cfg.keys = NULL;
+  cfg.size = 0;
+  cfg.realmtable = NULL;
+  cfg.logging = 0;
+  cfg.socklogging = 0;
+  cfg.logfnam = NULL;
+  cfg.logsport = NULL;
+  cfg.dateformat = NULL;
+
+  state = F_UNKNOWN;
+	
+  file = fopen(name, "r");
+  if (file == NULL) {
+    return cfg;
+  }
+
+  while (fgets(buff, 256, file) != NULL) { /* first loop - counting realm */
+    helpbuf1[0] = 0;
+    parse_line(buff, helpbuf1, helpbuf2);
+    if (strcmp(helpbuf1, "realm")==0) {
+      ++cfg.size;
+    }
+  }
+  rewind(file);
+	
+  cfg.realmtable = calloc(cfg.size, sizeof(RealmT));
+  for (i=0; i<cfg.size; ++i) {
+    cfg.realmtable[i].pass[0] = 1;
+    cfg.realmtable[i].pass[1] = 2;
+    cfg.realmtable[i].pass[2] = 3;
+    cfg.realmtable[i].pass[3] = 4;
+  }
+  cfg.size = 0;
+  *status = 0;
+
+  listencount = managecount = 0;
+  
+  
+  while (fgets(buff, 256, file) != NULL) { /* second loop - counting listen */
+    (*status)++;
+    state = parse_line(buff, helpbuf1, helpbuf2);
+    if (state) {
+      if (strcmp(helpbuf1, "realm")==0) {
+        ++cfg.size;
+        if (listencount != managecount) {
+          return cfg;
+        }
+        listencount = managecount = 0;
+      }
+      else if (strcmp(helpbuf1, "listen")==0) {
+        if (cfg.size == 0) {
+          return cfg;
+        }
+        ++cfg.realmtable[cfg.size-1].usrclinum;
+        ++listencount;
+      }
+      else if (strcmp(helpbuf1, "manage")==0) {
+        if (cfg.size == 0) {
+          return cfg;
+        }
+        ++managecount;
+      }
+    }
+  }
+  rewind(file);
+
+  if (listencount != managecount) {
+    return cfg;
+  }
+
+  for (i=0; i<cfg.size; ++i) {
+    cfg.realmtable[i].usrclitable = calloc(cfg.realmtable[i].usrclinum, sizeof(UsrCliT));
+  }
+  
+  cfg.size = 0;
+  *status = 0;
+  
+  
+  while (fgets(buff, 256, file) != NULL) { /* third loop - parsing file */
+    (*status)++;
+    state = parse_line(buff, helpbuf1, helpbuf2);
+    if (helpbuf1[0] == '#') {
+      memset(buff, 0, 256);
+      continue;
+    }
+    if (state == 1) {
+      if (strcmp(helpbuf1, "realm")==0) {
+        ++cfg.size;
+        TYPE_SET_SSL(cfg.realmtable[cfg.size-1].type);
+        TYPE_SET_ZLIB(cfg.realmtable[cfg.size-1].type);
+        listencount = managecount = 0;
+      }
+      else if (cfg.size == 0) {
+        return cfg;
+      }
+      else if (strcmp(helpbuf1, "nossl")==0) {
+        TYPE_UNSET_SSL(cfg.realmtable[cfg.size-1].type);
+      }
+      else if (strcmp(helpbuf1, "nozlib")==0) {
+        TYPE_UNSET_ZLIB(cfg.realmtable[cfg.size-1].type);
+      }
+      else if (strcmp(helpbuf1, "baseport")==0) {
+        cfg.realmtable[cfg.size-1].baseport = 1;
+      }
+      else if (strcmp(helpbuf1, "dnslookups")==0) {
+        cfg.realmtable[cfg.size-1].dnslookups = 1;
+      }
+      else if (strcmp(helpbuf1, "ipv4")==0) {
+        if (TYPE_IS_UNSPEC(cfg.realmtable[cfg.size-1].type)) {
+          TYPE_SET_IPV4(cfg.realmtable[cfg.size-1].type);
+        }
+        else {
+          return cfg;
+        }
+      }
+      else if (strcmp(helpbuf1, "ipv6")==0) {
+        if (TYPE_IS_UNSPEC(cfg.realmtable[cfg.size-1].type)) {
+          TYPE_SET_IPV6(cfg.realmtable[cfg.size-1].type);
+        }
+        else {
+          return cfg;
+        }
+      }
+      else {
+        return cfg;
+      }
+    }
+    else if (state == 2) {
+      if (strcmp(helpbuf1, "realm")==0) {
+        ++cfg.size;
+        TYPE_SET_SSL(cfg.realmtable[cfg.size-1].type);
+        TYPE_SET_ZLIB(cfg.realmtable[cfg.size-1].type);
+        listencount = managecount = 0;
+        cfg.realmtable[cfg.size-1].realmname = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].realmname, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "certificate")==0) {
+        cfg.certif = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.certif, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "key")==0) {
+        cfg.keys = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.keys, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "heavylog")==0) {
+        if (cfg.logging) {
+          return cfg;
+        }
+        cfg.logging = 3;
+        cfg.logfnam = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.logfnam, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "lightlog")==0) {
+        if (cfg.logging) {
+          return cfg;
+        }
+        cfg.logging = 1;
+        cfg.logfnam = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.logfnam, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "heavysocklog")==0) {
+        if (cfg.socklogging) {
+          return cfg;
+        }
+        cfg.socklogging = 3;
+        cfg.logsport = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.logsport, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "lightsocklog")==0) {
+        if (cfg.socklogging) {
+          return cfg;
+        }
+        cfg.socklogging = 1;
+        cfg.logsport = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.logsport, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "dateformat")==0) {
+        cfg.dateformat = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.dateformat, helpbuf2);
+      }
+      else if (cfg.size == 0) {
+        return cfg;
+      }
+      else if (strcmp(helpbuf1, "hostname")==0) {
+        cfg.realmtable[cfg.size-1].hostname = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].hostname, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "listen")==0) {
+        cfg.realmtable[cfg.size-1].usrclitable[listencount].lisportnum=calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].usrclitable[listencount].lisportnum, helpbuf2);
+        ++listencount;
+      }
+      else if (strcmp(helpbuf1, "pass")==0) {
+        n = strlen(helpbuf2);
+        memset(cfg.realmtable[cfg.size-1].pass, 0, 4);
+        for (i = 0; i < n; ++i) {
+          cfg.realmtable[cfg.size-1].pass[i%4] += helpbuf2[i];
+        }
+      }
+      else if (strcmp(helpbuf1, "manage")==0) {
+        cfg.realmtable[cfg.size-1].usrclitable[managecount].manportnum=calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].usrclitable[managecount].manportnum, helpbuf2);
+        ++managecount;
+      }
+      else if (strcmp(helpbuf1, "users")==0) {
+        cfg.realmtable[cfg.size-1].users = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].users, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "timeout")==0) {
+        cfg.realmtable[cfg.size-1].timeout = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].timeout, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "clients")==0) {
+        cfg.realmtable[cfg.size-1].clients = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].clients, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "raclients")==0) {
+        cfg.realmtable[cfg.size-1].raclients = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].raclients, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "usrpcli")==0) {
+        cfg.realmtable[cfg.size-1].usrpcli = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].usrpcli, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "climode")==0) {
+        cfg.realmtable[cfg.size-1].clim = calloc(strlen(helpbuf2)+1, sizeof(char));
+        strcpy(cfg.realmtable[cfg.size-1].clim, helpbuf2);
+      }
+      else if (strcmp(helpbuf1, "proto")==0) {
+        if (TYPE_IS_SET(cfg.realmtable[cfg.size-1].type)) {
+          return cfg;
+        }
+        if (strcmp(helpbuf2, "tcp")==0) {
+          TYPE_SET_TCP(cfg.realmtable[cfg.size-1].type);
+        }
+        else if (strcmp(helpbuf2, "udp")==0) {
+          TYPE_SET_UDP(cfg.realmtable[cfg.size-1].type);
+        }
+        else {
+          return cfg;
+        }
+      }
+      else {
+        return cfg;
+      }
+    }
+    memset(buff, 0, 256);
+  }
+
+  fclose(file);
+	
+  *status = 0;
+  return cfg;
+}
+
-- 
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