2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2014 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from many
7 others, a complete list can be found in the file AUTHORS.
9 You may use this file and others of this release according to the
10 license defined in the LICENSE file, which includes the Affero General
11 Public License, v3.0 ("AGPLv3") and some additional permissions and
12 terms pursuant to its AGPLv3 Section 7.
14 Bacula® is a registered trademark of Kern Sibbald.
17 * Bacula Sock Class definition
18 * Note, the old non-class code is in bnet.c, and the
19 * new class code associated with this file is in bsock.c
21 * Kern Sibbald, May MM
23 * Zero msglen from other end indicates soft eof (usually
24 * end of some binary data stream, but not end of conversation).
26 * Negative msglen, is special "signal" (no data follows).
27 * See below for SIGNAL codes.
34 struct btimer_t; /* forward reference */
36 /* Effectively disable the bsock time out */
37 #define BSOCK_TIMEOUT 3600 * 24 * 200; /* default 200 days */
38 btimer_t *start_bsock_timer(BSOCK *bs, uint32_t wait);
39 void stop_bsock_timer(btimer_t *wid);
44 * Note, keep this public part before the private otherwise
45 * bat breaks on some systems such as RedHat.
48 uint64_t read_seqno; /* read sequence number */
49 POOLMEM *msg; /* message pool buffer */
50 POOLMEM *errmsg; /* edited error message */
51 RES *res; /* Resource to which we are connected */
52 FILE *m_spool_fd; /* spooling file */
53 TLS_CONNECTION *tls; /* associated tls connection */
54 IPADDR *src_addr; /* IP address to source connections from */
55 uint32_t in_msg_no; /* input message number */
56 uint32_t out_msg_no; /* output message number */
57 int32_t msglen; /* message length */
58 volatile time_t timer_start; /* time started read/write */
59 volatile time_t timeout; /* timeout BSOCK after this interval */
60 int m_fd; /* socket file descriptor */
61 int b_errno; /* bsock errno */
62 int m_blocking; /* blocking state (0 = nonblocking, 1 = blocking) */
63 volatile int errors; /* incremented for each error on socket */
64 volatile bool m_suppress_error_msgs; /* set to suppress error messages */
66 struct sockaddr client_addr; /* client's IP address */
67 struct sockaddr_in peer_addr; /* peer's IP address */
70 BSOCK *m_next; /* next BSOCK if duped */
71 JCR *m_jcr; /* jcr or NULL for error msgs */
72 pthread_mutex_t m_mutex; /* for locking if use_locking set */
73 char *m_who; /* Name of daemon to which we are talking */
74 char *m_host; /* Host name/IP */
75 int m_port; /* desired port */
76 btimer_t *m_tid; /* timer id */
77 boffset_t m_data_end; /* offset of data written */
78 boffset_t m_last_data_end; /* offset of last valid data written */
79 int32_t m_FileIndex; /* attr spool FI */
80 int32_t m_lastFileIndex; /* last valid attr spool FI */
81 volatile bool m_timed_out: 1; /* timed out in read/write */
82 volatile bool m_terminated: 1; /* set when BNET_TERMINATE arrives */
83 bool m_closed: 1; /* set when socket is closed */
84 bool m_duped: 1; /* set if duped BSOCK */
85 bool m_spool: 1; /* set for spooling */
86 bool m_use_locking: 1; /* set to use locking */
88 int64_t m_bwlimit; /* set to limit bandwidth */
89 int64_t m_nb_bytes; /* bytes sent/recv since the last tick */
90 btime_t m_last_tick; /* last tick used by bwlimit */
92 void fin_init(JCR * jcr, int sockfd, const char *who, const char *host, int port,
93 struct sockaddr *lclient_addr);
94 bool open(JCR *jcr, const char *name, char *host, char *service,
95 int port, utime_t heart_beat, int *fatal);
98 /* methods -- in bsock.c */
101 bool connect(JCR * jcr, int retry_interval, utime_t max_retry_time,
102 utime_t heart_beat, const char *name, char *host,
103 char *service, int port, int verbose);
106 bool fsend(const char*, ...);
107 bool signal(int signal);
108 void close(); /* close connection and destroy packet */
109 void destroy(); /* destroy socket packet */
110 const char *bstrerror(); /* last error on socket */
111 int get_peer(char *buf, socklen_t buflen);
112 bool despool(void update_attr_spool_size(ssize_t size), ssize_t tsize);
113 bool set_buffer_size(uint32_t size, int rw);
114 int set_nonblocking();
116 void restore_blocking(int flags);
117 void set_killable(bool killable);
118 int wait_data(int sec, int usec=0);
119 int wait_data_intr(int sec, int usec=0);
120 bool authenticate_director(const char *name, const char *password,
121 TLS_CONTEXT *tls_ctx, char *response, int response_len);
122 bool set_locking(); /* in bsock.c */
123 void clear_locking(); /* in bsock.c */
124 void set_source_address(dlist *src_addr_list);
125 void control_bwlimit(int bytes); /* in bsock.c */
127 /* Inline functions */
128 void suppress_error_messages(bool flag) { m_suppress_error_msgs = flag; };
129 void set_jcr(JCR *jcr) { m_jcr = jcr; };
130 void set_who(char *who) { m_who = who; };
131 void set_host(char *host) { m_host = host; };
132 void set_port(int port) { m_port = port; };
133 char *who() const { return m_who; };
134 char *host() const { return m_host; };
135 int port() const { return m_port; };
136 JCR *jcr() const { return m_jcr; };
137 JCR *get_jcr() const { return m_jcr; };
138 bool is_spooling() const { return m_spool; };
139 bool is_duped() const { return m_duped; };
140 bool is_terminated() const { return m_terminated; };
141 bool is_timed_out() const { return m_timed_out; };
142 bool is_closed() const { return m_closed; };
143 bool is_open() const { return !m_closed; };
144 bool is_stop() const { return errors || is_terminated() || is_closed(); }
145 bool is_error() { errno = b_errno; return errors; };
146 void set_data_end(int32_t FileIndex) {
147 if (m_spool && FileIndex > m_FileIndex) {
148 m_lastFileIndex = m_FileIndex;
149 m_last_data_end = m_data_end;
150 m_FileIndex = FileIndex;
151 m_data_end = ftello(m_spool_fd);
154 boffset_t get_last_data_end() { return m_last_data_end; };
155 int32_t get_lastFileIndex() { return m_lastFileIndex; };
156 void set_bwlimit(int64_t maxspeed) { m_bwlimit = maxspeed; };
157 bool use_bwlimit() { return m_bwlimit > 0;};
158 void set_spooling() { m_spool = true; };
159 void clear_spooling() { m_spool = false; };
160 void set_duped() { m_duped = true; };
161 void set_timed_out() { m_timed_out = true; };
162 void clear_timed_out() { m_timed_out = false; };
163 void set_terminated() { m_terminated = true; };
164 void set_closed() { m_closed = true; };
165 void start_timer(int sec) { m_tid = start_bsock_timer(this, sec); };
166 void stop_timer() { stop_bsock_timer(m_tid); };
171 * Signal definitions for use in bsock->signal()
172 * Note! These must be negative. There are signals that are generated
173 * by the bsock software not by the OS ...
176 BNET_EOD = -1, /* End of data stream, new data may follow */
177 BNET_EOD_POLL = -2, /* End of data and poll all in one */
178 BNET_STATUS = -3, /* Send full status */
179 BNET_TERMINATE = -4, /* Conversation terminated, doing close() */
180 BNET_POLL = -5, /* Poll request, I'm hanging on a read */
181 BNET_HEARTBEAT = -6, /* Heartbeat Response requested */
182 BNET_HB_RESPONSE = -7, /* Only response permited to HB */
183 BNET_xxxxxxPROMPT = -8, /* No longer used -- Prompt for subcommand */
184 BNET_BTIME = -9, /* Send UTC btime */
185 BNET_BREAK = -10, /* Stop current command -- ctl-c */
186 BNET_START_SELECT = -11, /* Start of a selection list */
187 BNET_END_SELECT = -12, /* End of a select list */
188 BNET_INVALID_CMD = -13, /* Invalid command sent */
189 BNET_CMD_FAILED = -14, /* Command failed */
190 BNET_CMD_OK = -15, /* Command succeeded */
191 BNET_CMD_BEGIN = -16, /* Start command execution */
192 BNET_MSGS_PENDING = -17, /* Messages pending */
193 BNET_MAIN_PROMPT = -18, /* Server ready and waiting */
194 BNET_SELECT_INPUT = -19, /* Return selection input */
195 BNET_WARNING_MSG = -20, /* Warning message */
196 BNET_ERROR_MSG = -21, /* Error message -- command failed */
197 BNET_INFO_MSG = -22, /* Info message -- status line */
198 BNET_RUN_CMD = -23, /* Run command follows */
199 BNET_YESNO = -24, /* Request yes no response */
200 BNET_START_RTREE = -25, /* Start restore tree mode */
201 BNET_END_RTREE = -26, /* End restore tree mode */
202 BNET_SUB_PROMPT = -27, /* Indicate we are at a subprompt */
203 BNET_TEXT_INPUT = -28 /* Get text input from user */
206 #define BNET_SETBUF_READ 1 /* Arg for bnet_set_buffer_size */
207 #define BNET_SETBUF_WRITE 2 /* Arg for bnet_set_buffer_size */
210 * Return status from bnet_recv()
211 * Note, the HARDEOF and ERROR refer to comm status/problems
212 * rather than the BNET_xxx above, which are software signals.
221 * TLS enabling values. Value is important for comparison, ie:
222 * if (tls_remote_need < BNET_TLS_REQUIRED) { ... }
225 BNET_TLS_NONE = 0, /* cannot do TLS */
226 BNET_TLS_OK = 1, /* can do, but not required on my end */
227 BNET_TLS_REQUIRED = 2 /* TLS is required */
230 int32_t read_nbytes(BSOCK * bsock, char *ptr, int32_t nbytes);
231 int32_t write_nbytes(BSOCK * bsock, char *ptr, int32_t nbytes);
235 * Completely release the socket packet, and NULL the pointer
237 #define free_bsock(a) do{if(a){(a)->close(); (a)->destroy(); (a)=NULL;}} while(0)
240 * Does the socket exist and is it open?
242 #define is_bsock_open(a) ((a) && (a)->is_open())
244 #endif /* __BSOCK_H_ */