kppp/opener.h

   1 #ifndef _FILEOPENER_H_
   2 #define _FILEOPENER_H_
   3
   4 #define DEVNULL "/dev/null"
   5
   6 // workaround for bug in glibc on RedHat 5.0 and Debian 2.1
   7 #if defined(__GLIBC__) && (__GLIBC__ == 2 && __GLIBC_MINOR__ == 0 && defined(__linux__))
   8 # define MY_SCM_RIGHTS 1
   9 #else
  10 # define MY_SCM_RIGHTS SCM_RIGHTS
  11 #endif
  12
  13 // ### add by bhughes - FreeBSD defines 'BSD' in sys/param.h
  14 #include <sys/param.h>
  15
  16 #if defined(BSD) || defined(__svr4__)
  17 # define IOV_BASE_CAST (char *)
  18 #else
  19 # define IOV_BASE_CAST (void *)
  20 #endif
  21
  22 const char *pppdPath();
  23
  24 class Opener {
  25
  26 public:
  27   Opener(int);
  28   ~Opener();
  29
  30   enum { OpenDevice = 1,
  31          OpenLock, RemoveLock,
  32          OpenResolv,
  33          OpenSysLog,
  34          SetSecret, RemoveSecret,
  35          SetHostname,
  36          ExecPPPDaemon, KillPPPDaemon,
  37          PPPDExitStatus,
  38          Stop };
  39   enum Auth { PAP = 1, CHAP };
  40   enum { MaxPathLen = 30, MaxStrLen = 40, MaxArgs = 100 };
  41
  42 private:
  43   enum { Original=0x100, New=0x200, Old=0x400 } Version;
  44   void mainLoop();
  45   int sendFD(int ttyfd, struct ResponseHeader *response);
  46   int sendResponse(struct ResponseHeader *response);
  47   const char *deviceByIndex(int idx);
  48   bool createAuthFile(Auth method, char *username, char *password);
  49   bool removeAuthFile(Auth method);
  50   const char* authFile(Auth method, int version = Original);
  51   bool execpppd(const char *arguments);
  52   bool killpppd()const;
  53   void parseargs(char* buf, char** args);
  54
  55   int socket;
  56   int ttyfd;
  57   char lockfile[MaxPathLen+1];
  58 };
  59
  60
  61 struct RequestHeader {
  62   int   type;
  63   int   len;
  64   //  int   id;     // TODO: Use a transmission id and check whether
  65                     //       response matches request
  66 };
  67
  68 struct ResponseHeader {
  69   int   status; /* 0 or errno */
  70   //  int   id;
  71 };
  72
  73 struct OpenModemRequest {
  74   struct RequestHeader header;
  75   int    deviceNum;
  76 };
  77
  78 struct RemoveLockRequest {
  79   struct RequestHeader header;
  80 };
  81
  82 struct OpenLockRequest {
  83   struct RequestHeader header;
  84   int    deviceNum;
  85   int    flags;
  86 };
  87
  88 struct OpenResolvRequest {
  89   struct RequestHeader header;
  90   int    flags;
  91 };
  92
  93 struct OpenLogRequest {
  94   struct RequestHeader header;
  95 };
  96
  97 struct SetSecretRequest {
  98   struct RequestHeader header;
  99   Opener::Auth method;   // PAP or CHAP
 100   char   username[Opener::MaxStrLen+1];
 101   char   password[Opener::MaxStrLen+1];
 102 };
 103
 104 struct RemoveSecretRequest {
 105   struct RequestHeader header;
 106   Opener::Auth method;   // PAP or CHAP
 107 };
 108
 109 struct SetHostnameRequest {
 110   struct RequestHeader header;
 111   char   name[Opener::MaxStrLen+1];
 112 };
 113
 114 struct ExecDaemonRequest {
 115   struct RequestHeader header;
 116   char   arguments[MAX_CMDLEN+1];
 117 };
 118
 119 struct KillDaemonRequest {
 120   struct RequestHeader header;
 121 };
 122
 123 struct PPPDExitStatusRequest {
 124   struct RequestHeader header;
 125 };
 126
 127 struct StopRequest {
 128   struct RequestHeader header;
 129 };
 130
 131 union AllRequests {
 132   struct RequestHeader header;
 133   struct OpenModemRequest  modem;
 134   struct OpenLockRequest lock;
 135   struct RemoveLockRequest unlock;
 136   struct OpenResolvRequest resolv;
 137   struct SetSecretRequest secret;
 138   struct RemoveSecretRequest remove;
 139   struct SetHostnameRequest host;
 140   struct OpenLogRequest log;
 141   struct ExecDaemonRequest daemon;
 142   struct ExecDaemonRequest kill;
 143   struct PPPDExitStatusRequest status;
 144   struct StopRequest stop;
 145 };
 146
 147 #endif