2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2008 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 and included
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 Kern Sibbald.
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 struct btimer_t; /* forward reference */
49 btimer_t *start_bsock_timer(BSOCK *bs, uint32_t wait);
50 void stop_bsock_timer(btimer_t *wid);
55 BSOCK *m_next; /* next BSOCK if duped */
56 JCR *m_jcr; /* jcr or NULL for error msgs */
57 pthread_mutex_t m_mutex; /* for locking if use_locking set */
58 char *m_who; /* Name of daemon to which we are talking */
59 char *m_host; /* Host name/IP */
60 int m_port; /* desired port */
61 btimer_t *m_tid; /* timer id */
62 boffset_t m_data_end; /* offset of last valid data written */
63 volatile bool m_timed_out: 1; /* timed out in read/write */
64 volatile bool m_terminated: 1; /* set when BNET_TERMINATE arrives */
65 bool m_duped: 1; /* set if duped BSOCK */
66 bool m_spool: 1; /* set for spooling */
67 bool m_use_locking: 1; /* set to use locking */
69 void fin_init(JCR * jcr, int sockfd, const char *who, const char *host, int port,
70 struct sockaddr *lclient_addr);
71 bool open(JCR *jcr, const char *name, char *host, char *service,
72 int port, utime_t heart_beat, int *fatal);
75 uint64_t read_seqno; /* read sequence number */
76 uint32_t in_msg_no; /* input message number */
77 uint32_t out_msg_no; /* output message number */
78 int m_fd; /* socket file descriptor */
79 TLS_CONNECTION *tls; /* associated tls connection */
80 int32_t msglen; /* message length */
81 int b_errno; /* bsock errno */
82 int m_blocking; /* blocking state (0 = nonblocking, 1 = blocking) */
83 volatile int errors; /* incremented for each error on socket */
84 volatile bool m_suppress_error_msgs: 1; /* set to suppress error messages */
85 volatile time_t timer_start; /* time started read/write */
86 volatile time_t timeout; /* timeout BSOCK after this interval */
87 POOLMEM *msg; /* message pool buffer */
88 POOLMEM *errmsg; /* edited error message */
89 RES *res; /* Resource to which we are connected */
90 FILE *m_spool_fd; /* spooling file */
91 struct sockaddr client_addr; /* client's IP address */
92 struct sockaddr_in peer_addr; /* peer's IP address */
93 IPADDR *src_addr; /* IP address to source connections from */
95 /* methods -- in bsock.c */
99 bool connect(JCR * jcr, int retry_interval, utime_t max_retry_time,
100 utime_t heart_beat, const char *name, char *host,
101 char *service, int port, int verbose);
104 bool fsend(const char*, ...);
105 bool signal(int signal);
106 void close(); /* close connection and destroy packet */
107 void destroy(); /* destroy socket packet */
108 const char *bstrerror(); /* last error on socket */
109 int get_peer(char *buf, socklen_t buflen);
110 bool despool(void update_attr_spool_size(ssize_t size), ssize_t tsize);
111 bool set_buffer_size(uint32_t size, int rw);
112 int set_nonblocking();
114 void restore_blocking(int flags);
115 int wait_data(int sec, int usec=0);
116 int wait_data_intr(int sec, int usec=0);
117 bool authenticate_director(const char *name, const char *password,
118 TLS_CONTEXT *tls_ctx, char *msg, int msglen);
119 bool set_locking(); /* in bsock.c */
120 void clear_locking(); /* in bsock.c */
121 void set_source_address(dlist *src_addr_list);
123 /* Inline functions */
124 void set_jcr(JCR *jcr) { m_jcr = jcr; };
125 void set_who(char *who) { m_who = who; };
126 void set_host(char *host) { m_host = host; };
127 void set_port(int port) { m_port = port; };
128 char *who() { return m_who; };
129 char *host() { return m_host; };
130 int port() { return m_port; };
131 JCR *jcr() { return m_jcr; };
132 JCR *get_jcr() { return m_jcr; };
133 bool is_spooling() { return m_spool; };
134 bool is_duped() { return m_duped; };
135 bool is_terminated() { return m_terminated; };
136 bool is_timed_out() { return m_timed_out; };
137 bool is_stop() { return errors || is_terminated(); }
138 bool is_error() { errno = b_errno; return errors; }
139 void set_data_end() { if (m_spool) m_data_end = ftello(m_spool_fd); };
140 void set_spooling() { m_spool = true; };
141 void clear_spooling() { m_spool = false; };
142 void set_duped() { m_duped = true; };
143 void set_timed_out() { m_timed_out = true; };
144 void clear_timed_out() { m_timed_out = false; };
145 void set_terminated() { m_terminated = true; };
146 void start_timer(int sec) { m_tid = start_bsock_timer(this, sec); };
147 void stop_timer() { stop_bsock_timer(m_tid); };
151 * Signal definitions for use in bnet_sig()
152 * Note! These must be negative. There are signals that are generated
153 * by the bsock software not by the OS ...
156 BNET_EOD = -1, /* End of data stream, new data may follow */
157 BNET_EOD_POLL = -2, /* End of data and poll all in one */
158 BNET_STATUS = -3, /* Send full status */
159 BNET_TERMINATE = -4, /* Conversation terminated, doing close() */
160 BNET_POLL = -5, /* Poll request, I'm hanging on a read */
161 BNET_HEARTBEAT = -6, /* Heartbeat Response requested */
162 BNET_HB_RESPONSE = -7, /* Only response permited to HB */
163 BNET_PROMPT = -8, /* Prompt for subcommand */
164 BNET_BTIME = -9, /* Send UTC btime */
165 BNET_BREAK = -10, /* Stop current command -- ctl-c */
166 BNET_START_SELECT = -11, /* Start of a selection list */
167 BNET_END_SELECT = -12, /* End of a select list */
168 BNET_INVALID_CMD = -13, /* Invalid command sent */
169 BNET_CMD_FAILED = -14, /* Command failed */
170 BNET_CMD_OK = -15, /* Command succeeded */
171 BNET_CMD_BEGIN = -16, /* Start command execution */
172 BNET_MSGS_PENDING = -17, /* Messages pending */
173 BNET_MAIN_PROMPT = -18, /* Server ready and waiting */
174 BNET_SELECT_INPUT = -19, /* Return selection input */
175 BNET_WARNING_MSG = -20, /* Warning message */
176 BNET_ERROR_MSG = -21, /* Error message -- command failed */
177 BNET_INFO_MSG = -22, /* Info message -- status line */
178 BNET_RUN_CMD = -23, /* Run command follows */
179 BNET_YESNO = -24, /* Request yes no response */
180 BNET_START_RTREE = -25, /* Start restore tree mode */
181 BNET_END_RTREE = -26 /* End restore tree mode */
184 #define BNET_SETBUF_READ 1 /* Arg for bnet_set_buffer_size */
185 #define BNET_SETBUF_WRITE 2 /* Arg for bnet_set_buffer_size */
188 * Return status from bnet_recv()
189 * Note, the HARDEOF and ERROR refer to comm status/problems
190 * rather than the BNET_xxx above, which are software signals.
199 * TLS enabling values. Value is important for comparison, ie:
200 * if (tls_remote_need < BNET_TLS_REQUIRED) { ... }
203 BNET_TLS_NONE = 0, /* cannot do TLS */
204 BNET_TLS_OK = 1, /* can do, but not required on my end */
205 BNET_TLS_REQUIRED = 2 /* TLS is required */
208 int32_t read_nbytes(BSOCK * bsock, char *ptr, int32_t nbytes);
209 int32_t write_nbytes(BSOCK * bsock, char *ptr, int32_t nbytes);
213 #endif /* __BSOCK_H_ */