2 Bacula® - The Network Backup Solution
4 Copyright (C) 2000-2009 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 three of the GNU Affero 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 Affero 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 * Note, keep this public part before the private otherwise
56 * bat breaks on some systems such as RedHat.
59 uint64_t read_seqno; /* read sequence number */
60 POOLMEM *msg; /* message pool buffer */
61 POOLMEM *errmsg; /* edited error message */
62 RES *res; /* Resource to which we are connected */
63 FILE *m_spool_fd; /* spooling file */
64 TLS_CONNECTION *tls; /* associated tls connection */
65 IPADDR *src_addr; /* IP address to source connections from */
66 uint32_t in_msg_no; /* input message number */
67 uint32_t out_msg_no; /* output message number */
68 int32_t msglen; /* message length */
69 volatile time_t timer_start; /* time started read/write */
70 volatile time_t timeout; /* timeout BSOCK after this interval */
71 int m_fd; /* socket file descriptor */
72 int b_errno; /* bsock errno */
73 int m_blocking; /* blocking state (0 = nonblocking, 1 = blocking) */
74 volatile int errors; /* incremented for each error on socket */
75 volatile bool m_suppress_error_msgs; /* set to suppress error messages */
77 struct sockaddr client_addr; /* client's IP address */
78 struct sockaddr_in peer_addr; /* peer's IP address */
81 BSOCK *m_next; /* next BSOCK if duped */
82 JCR *m_jcr; /* jcr or NULL for error msgs */
83 pthread_mutex_t m_mutex; /* for locking if use_locking set */
84 char *m_who; /* Name of daemon to which we are talking */
85 char *m_host; /* Host name/IP */
86 int m_port; /* desired port */
87 btimer_t *m_tid; /* timer id */
88 boffset_t m_data_end; /* offset of last valid data written */
89 int32_t m_FileIndex; /* last valid attr spool FI */
90 volatile bool m_timed_out: 1; /* timed out in read/write */
91 volatile bool m_terminated: 1; /* set when BNET_TERMINATE arrives */
92 bool m_duped: 1; /* set if duped BSOCK */
93 bool m_spool: 1; /* set for spooling */
94 bool m_use_locking: 1; /* set to use locking */
96 void fin_init(JCR * jcr, int sockfd, const char *who, const char *host, int port,
97 struct sockaddr *lclient_addr);
98 bool open(JCR *jcr, const char *name, char *host, char *service,
99 int port, utime_t heart_beat, int *fatal);
102 /* methods -- in bsock.c */
106 bool connect(JCR * jcr, int retry_interval, utime_t max_retry_time,
107 utime_t heart_beat, const char *name, char *host,
108 char *service, int port, int verbose);
111 bool fsend(const char*, ...);
112 bool signal(int signal);
113 void close(); /* close connection and destroy packet */
114 void destroy(); /* destroy socket packet */
115 const char *bstrerror(); /* last error on socket */
116 int get_peer(char *buf, socklen_t buflen);
117 bool despool(void update_attr_spool_size(ssize_t size), ssize_t tsize);
118 bool set_buffer_size(uint32_t size, int rw);
119 int set_nonblocking();
121 void restore_blocking(int flags);
122 int wait_data(int sec, int usec=0);
123 int wait_data_intr(int sec, int usec=0);
124 bool authenticate_director(const char *name, const char *password,
125 TLS_CONTEXT *tls_ctx, char *response, int response_len);
126 bool set_locking(); /* in bsock.c */
127 void clear_locking(); /* in bsock.c */
128 void set_source_address(dlist *src_addr_list);
130 /* Inline functions */
131 void set_jcr(JCR *jcr) { m_jcr = jcr; };
132 void set_who(char *who) { m_who = who; };
133 void set_host(char *host) { m_host = host; };
134 void set_port(int port) { m_port = port; };
135 char *who() { return m_who; };
136 char *host() { return m_host; };
137 int port() { return m_port; };
138 JCR *jcr() { return m_jcr; };
139 JCR *get_jcr() { return m_jcr; };
140 bool is_spooling() { return m_spool; };
141 bool is_duped() { return m_duped; };
142 bool is_terminated() { return m_terminated; };
143 bool is_timed_out() { return m_timed_out; };
144 bool is_stop() { return errors || is_terminated(); }
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_FileIndex = FileIndex - 1;
149 m_data_end = ftello(m_spool_fd);
152 boffset_t get_data_end() { return m_data_end; };
153 int32_t get_FileIndex() { return m_FileIndex; };
154 void set_spooling() { m_spool = true; };
155 void clear_spooling() { m_spool = false; };
156 void set_duped() { m_duped = true; };
157 void set_timed_out() { m_timed_out = true; };
158 void clear_timed_out() { m_timed_out = false; };
159 void set_terminated() { m_terminated = true; };
160 void start_timer(int sec) { m_tid = start_bsock_timer(this, sec); };
161 void stop_timer() { stop_bsock_timer(m_tid); };
165 * Signal definitions for use in bnet_sig()
166 * Note! These must be negative. There are signals that are generated
167 * by the bsock software not by the OS ...
170 BNET_EOD = -1, /* End of data stream, new data may follow */
171 BNET_EOD_POLL = -2, /* End of data and poll all in one */
172 BNET_STATUS = -3, /* Send full status */
173 BNET_TERMINATE = -4, /* Conversation terminated, doing close() */
174 BNET_POLL = -5, /* Poll request, I'm hanging on a read */
175 BNET_HEARTBEAT = -6, /* Heartbeat Response requested */
176 BNET_HB_RESPONSE = -7, /* Only response permited to HB */
177 BNET_xxxxxxPROMPT = -8, /* No longer used -- Prompt for subcommand */
178 BNET_BTIME = -9, /* Send UTC btime */
179 BNET_BREAK = -10, /* Stop current command -- ctl-c */
180 BNET_START_SELECT = -11, /* Start of a selection list */
181 BNET_END_SELECT = -12, /* End of a select list */
182 BNET_INVALID_CMD = -13, /* Invalid command sent */
183 BNET_CMD_FAILED = -14, /* Command failed */
184 BNET_CMD_OK = -15, /* Command succeeded */
185 BNET_CMD_BEGIN = -16, /* Start command execution */
186 BNET_MSGS_PENDING = -17, /* Messages pending */
187 BNET_MAIN_PROMPT = -18, /* Server ready and waiting */
188 BNET_SELECT_INPUT = -19, /* Return selection input */
189 BNET_WARNING_MSG = -20, /* Warning message */
190 BNET_ERROR_MSG = -21, /* Error message -- command failed */
191 BNET_INFO_MSG = -22, /* Info message -- status line */
192 BNET_RUN_CMD = -23, /* Run command follows */
193 BNET_YESNO = -24, /* Request yes no response */
194 BNET_START_RTREE = -25, /* Start restore tree mode */
195 BNET_END_RTREE = -26, /* End restore tree mode */
196 BNET_SUB_PROMPT = -27, /* Indicate we are at a subprompt */
197 BNET_TEXT_INPUT = -28 /* Get text input from user */
200 #define BNET_SETBUF_READ 1 /* Arg for bnet_set_buffer_size */
201 #define BNET_SETBUF_WRITE 2 /* Arg for bnet_set_buffer_size */
204 * Return status from bnet_recv()
205 * Note, the HARDEOF and ERROR refer to comm status/problems
206 * rather than the BNET_xxx above, which are software signals.
215 * TLS enabling values. Value is important for comparison, ie:
216 * if (tls_remote_need < BNET_TLS_REQUIRED) { ... }
219 BNET_TLS_NONE = 0, /* cannot do TLS */
220 BNET_TLS_OK = 1, /* can do, but not required on my end */
221 BNET_TLS_REQUIRED = 2 /* TLS is required */
224 int32_t read_nbytes(BSOCK * bsock, char *ptr, int32_t nbytes);
225 int32_t write_nbytes(BSOCK * bsock, char *ptr, int32_t nbytes);
229 #endif /* __BSOCK_H_ */