2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2007 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version two of the GNU General Public
10 License as published by the Free Software Foundation plus additions
11 that are listed in the file LICENSE.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of John Walker.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
29 * Bacula Sock Class definition
30 * Note, the old non-class code is in bnet.c, and the
31 * new class code associated with this file is in bsock.c
33 * Kern Sibbald, May MM
35 * Zero msglen from other end indicates soft eof (usually
36 * end of some binary data stream, but not end of conversation).
38 * Negative msglen, is special "signal" (no data follows).
39 * See below for SIGNAL codes.
47 BSOCK *m_next; /* next BSOCK if duped */
48 JCR *m_jcr; /* jcr or NULL for error msgs */
49 char *m_who; /* Name of daemon to which we are talking */
50 char *m_host; /* Host name/IP */
51 int m_port; /* desired port */
54 uint64_t read_seqno; /* read sequence number */
55 uint32_t in_msg_no; /* input message number */
56 uint32_t out_msg_no; /* output message number */
57 int m_fd; /* socket file descriptor */
58 TLS_CONNECTION *tls; /* associated tls connection */
59 int32_t msglen; /* message length */
60 int b_errno; /* bsock errno */
61 int m_blocking; /* blocking state (0 = nonblocking, 1 = blocking) */
62 volatile int errors; /* incremented for each error on socket */
63 volatile bool m_suppress_error_msgs: 1; /* set to suppress error messages */
64 volatile bool m_timed_out: 1; /* timed out in read/write */
65 volatile bool m_terminated: 1; /* set when BNET_TERMINATE arrives */
66 bool m_duped: 1; /* set if duped BSOCK */
67 bool m_spool: 1; /* set for spooling */
68 volatile time_t timer_start; /* time started read/write */
69 volatile time_t timeout; /* timeout BSOCK after this interval */
70 POOLMEM *msg; /* message pool buffer */
71 POOLMEM *errmsg; /* edited error message */
72 RES *res; /* Resource to which we are connected */
73 FILE *m_spool_fd; /* spooling file */
74 struct sockaddr client_addr; /* client's IP address */
75 struct sockaddr_in peer_addr; /* peer's IP address */
77 /* methods -- in bsock.c */
80 bool fsend(const char*, ...);
81 bool signal(int signal);
82 void close(); /* close connection and destroy packet */
83 void destroy(); /* destroy socket packet */
84 const char *bstrerror(); /* last error on socket */
85 int get_peer(char *buf, socklen_t buflen);
86 bool despool(void update_attr_spool_size(ssize_t size), ssize_t tsize);
87 bool set_buffer_size(uint32_t size, int rw);
88 int set_nonblocking();
90 void restore_blocking(int flags);
92 /* Inline functions */
93 void set_jcr(JCR *jcr) { m_jcr = jcr; };
94 void set_who(char *who) { m_who = who; };
95 void set_host(char *host) { m_host = host; };
96 void set_port(int port) { m_port = port; };
97 char *who() { return m_who; };
98 char *host() { return m_host; };
99 int port() { return m_port; };
100 JCR *jcr() { return m_jcr; };
101 bool is_terminated() { return m_terminated; };
102 bool is_timed_out() { return m_timed_out; };
103 void set_terminated() { m_terminated = true; };
107 * Signal definitions for use in bnet_sig()
108 * Note! These must be negative. There are signals that are generated
109 * by the bsock software not by the OS ...
112 BNET_EOD = -1, /* End of data stream, new data may follow */
113 BNET_EOD_POLL = -2, /* End of data and poll all in one */
114 BNET_STATUS = -3, /* Send full status */
115 BNET_TERMINATE = -4, /* Conversation terminated, doing close() */
116 BNET_POLL = -5, /* Poll request, I'm hanging on a read */
117 BNET_HEARTBEAT = -6, /* Heartbeat Response requested */
118 BNET_HB_RESPONSE = -7, /* Only response permited to HB */
119 BNET_PROMPT = -8, /* Prompt for subcommand */
120 BNET_BTIME = -9, /* Send UTC btime */
121 BNET_BREAK = -10, /* Stop current command -- ctl-c */
122 BNET_START_SELECT = -11, /* Start of a selection list */
123 BNET_END_SELECT = -12, /* End of a select list */
124 BNET_INVALID_CMD = -13, /* Invalid command sent */
125 BNET_CMD_FAILED = -14, /* Command failed */
126 BNET_CMD_OK = -15, /* Command succeeded */
127 BNET_CMD_BEGIN = -16, /* Start command execution */
128 BNET_MSGS_PENDING = -17, /* Messages pending */
129 BNET_MAIN_PROMPT = -18, /* Server ready and waiting */
130 BNET_SELECT_INPUT = -19, /* Return selection input */
131 BNET_WARNING_MSG = -20, /* Warning message */
132 BNET_ERROR_MSG = -21, /* Error message -- command failed */
133 BNET_INFO_MSG = -22, /* Info message -- status line */
134 BNET_RUN_CMD = -23 /* Run command follows */
137 #define BNET_SETBUF_READ 1 /* Arg for bnet_set_buffer_size */
138 #define BNET_SETBUF_WRITE 2 /* Arg for bnet_set_buffer_size */
141 * Return status from bnet_recv()
142 * Note, the HARDEOF and ERROR refer to comm status/problems
143 * rather than the BNET_xxx above, which are software signals.
152 * TLS enabling values. Value is important for comparison, ie:
153 * if (tls_remote_need < BNET_TLS_REQUIRED) { ... }
156 BNET_TLS_NONE = 0, /* cannot do TLS */
157 BNET_TLS_OK = 1, /* can do, but not required on my end */
158 BNET_TLS_REQUIRED = 2 /* TLS is required */
161 int32_t read_nbytes(BSOCK * bsock, char *ptr, int32_t nbytes);
162 int32_t write_nbytes(BSOCK * bsock, char *ptr, int32_t nbytes);