Annotation of libaitio/inc/aitio.h, revision 1.36.2.4
1.1 misho 1: /*************************************************************************
1.8 misho 2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
1.1 misho 4: *
5: * $Author: misho $
1.36.2.4! misho 6: * $Id: aitio.h,v 1.36.2.3 2013/11/21 14:46:44 misho Exp $
1.1 misho 7: *
1.8 misho 8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
1.29 misho 15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
1.8 misho 16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
1.1 misho 46: #ifndef __AITIO_H
47: #define __AITIO_H
48:
49:
1.12 misho 50: #define COMPAT_43TTY
51:
1.8 misho 52: #include <assert.h>
1.24 misho 53: #include <syslog.h>
1.7 misho 54: #include <openssl/evp.h>
1.12 misho 55: #include <openssl/aes.h>
56: #include <sys/tty.h>
57: #include <sys/ioctl_compat.h>
1.13 misho 58: #include <sys/socket.h>
59: #include <sys/un.h>
1.24 misho 60: #include <sys/uio.h>
1.13 misho 61: #include <net/if_dl.h>
1.33 misho 62: #include <net/bpf.h>
1.13 misho 63: #include <netinet/in.h>
1.34 misho 64: #include <elwix.h>
1.36.2.1 misho 65: #include <aitsched.h>
1.7 misho 66:
67:
1.21 misho 68: #ifndef STRSIZ
1.34 misho 69: #define STRSIZ 256
1.21 misho 70: #endif
71:
1.34 misho 72: #define IO_SOCK_ROLE_CLIENT 0
73: #define IO_SOCK_ROLE_SERVER 1
74:
1.36 misho 75: #define IO_ETHER_FILTER_PROMISC 0
76: #define IO_ETHER_FILTER_NOTREAD -1
77: #define IO_ETHER_FILTER_READ 1
78: #define IO_ETHER_FILTER_WRITE 2
79:
1.34 misho 80:
1.35 misho 81: typedef struct tagCliSock sock_cli_t;
82: typedef void *(*sock_cb_t)(sock_cli_t*);
83: struct tagCliSock {
84: void *cli_parent;
85: int cli_fd;
86: int cli_pty;
87: sockaddr_t cli_addr;
88: char cli_name[64];
89:
1.36.2.2 misho 90: sched_task_func_t cli_func;
1.35 misho 91:
92: ait_val_t cli_buf;
93:
94: TAILQ_ENTRY(tagCliSock) cli_node;
95: };
1.36.2.2 misho 96:
1.34 misho 97: typedef struct {
1.35 misho 98: int sock_role;
99: int sock_backq;
100: int sock_type;
101: int sock_proto;
102: int sock_fd;
1.36.2.1 misho 103: struct timespec sock_timeout;
1.35 misho 104: sockaddr_t sock_addr;
105: sockaddr_t sock_peer;
1.34 misho 106:
1.35 misho 107: ait_val_t sock_buf;
1.34 misho 108:
1.36.2.1 misho 109: volatile intptr_t sock_kill;
110: sched_root_task_t *sock_root;
111:
1.35 misho 112: pthread_mutex_t sock_mtx;
113: TAILQ_HEAD(, tagCliSock) sock_cli;
1.34 misho 114: } sock_t;
115:
1.15 misho 116:
1.1 misho 117: // io_GetErrno() Get error code of last operation
1.30 misho 118: int io_GetErrno();
1.1 misho 119: // io_GetError() Get error text of last operation
1.30 misho 120: const char *io_GetError();
1.1 misho 121:
122:
1.12 misho 123: /*
1.34 misho 124: * ioInitSocket() - Init socket and allocate resources
125: *
126: * @role = Socket role
127: * @type = Socket type
128: * @proto = Socket protocol
129: * @addr = Bind to address
130: * @port = Bind to port
131: * @buflen = Socket buffer, optional if =0 == BUFSIZ
132: * return: NULL error or !=NULL created socket
133: */
134: sock_t *ioInitSocket(int role, int type, int proto,
135: const char *addr, unsigned short port, size_t buflen);
136: /*
137: * ioCloseSocket() - Close socket and free resources
138: *
139: * @s = Socket
140: * return: none
141: */
142: void ioCloseSocket(sock_t ** __restrict s);
1.36.2.4! misho 143: #define ioKillSocket(x) (assert((x)), (x)->sock_kill = 1)
! 144: /*
! 145: * ioCloseClient() - Close client socket
! 146: *
! 147: * @c = Client socket
! 148: * return: 0 ok or !=0 error
! 149: */
! 150: int ioCloseClient(sock_cli_t * __restrict c);
1.34 misho 151: /*
152: * ioUpSocket() - Setup socket for use
153: *
154: * @s = Socket
155: * @arg = Server role = listen backlog queue and Client role = peer address
1.36.2.1 misho 156: * @timeout = Socket timeout in ms (default -1 infinit)
1.34 misho 157: * return: -1 error or 0 ok
158: */
1.36.2.1 misho 159: int ioUpSocket(sock_t * __restrict s, void *arg, int timeout);
160: /*
1.36.2.2 misho 161: * ioUpdTimerSocket() - Update timeout of socket
162: *
163: * @c = Client socket
164: * return: none
165: */
166: void ioUpdTimerSocket(sock_cli_t * __restrict c);
167: /*
1.36.2.1 misho 168: * ioLoopSocket() - Start socket scheduler
169: *
170: * @s = Socket
1.36.2.2 misho 171: * @rcb = Read callback
1.36.2.1 misho 172: * return: -1 error or return result from scheduler
173: */
1.36.2.2 misho 174: int ioLoopSocket(sock_t * __restrict s, sched_task_func_t rcb);
1.34 misho 175:
176: /*
1.17 misho 177: * ioPromptRead() - Read data from input h[0] with prompt to output h[1]
1.16 misho 178: *
1.1 misho 179: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
180: * @csPrompt = Prompt before input, may be NULL
181: * @psData = Readed data
182: * @dataLen = Length of data
183: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
184: */
185: int ioPromptRead(int *h, const char *csPrompt, char * __restrict psData, int dataLen);
186: /*
1.17 misho 187: * ioPromptPassword() - Read password from input h[0] with prompt to output h[1]
1.16 misho 188: *
1.1 misho 189: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
190: * @csPrompt = Prompt before input, may be NULL
191: * @psPass = Readed password
192: * @passLen = Length of password
193: * @confirm = Confirm password, 0 - get password, !=0 Ask for confirmation
194: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
195: */
196: int ioPromptPassword(int *h, const char *csPrompt, char * __restrict psPass, int passLen, int confirm);
197:
1.10 misho 198:
199: /*
1.17 misho 200: * ioMkDir() - Function for racursive directory creation and validation
1.16 misho 201: *
1.5 misho 202: * @csDir = Full directory path
203: * @mode = Mode for directory creation if missing dir
204: * return: -1 error, 0 directory path exist, >0 created missing dirs
205: */
206: int ioMkDir(const char *csDir, int mode);
207:
1.6 misho 208: /*
1.17 misho 209: * ioWatchDirLoop() - Function for watching changes in directory and fire callback
1.16 misho 210: *
1.6 misho 211: * @csDir = Full directory path
212: * @callback = Callback if raise event! nOp -1 delete, 0 change/move, 1 create
213: * return: -1 error, !=-1 ok, number of total signaled events
214: */
215: int ioWatchDirLoop(const char *csDir, int (*callback)(const char *csName, int nOp));
216:
1.5 misho 217:
1.24 misho 218: #ifdef AIO_OPS
219: /*
220: * io_aiobulk() - AIO bulk R/W function
221: *
222: * @mode = Bulk wait mode
223: * @acbs = List of aiocb structures
224: * @nacb = Number of aiocb in list
225: * @sig = Event for completed operations, may be =NULL
226: * return: -1 error or 0 ok
227: */
1.30 misho 228: int io_aiobulk(int mode, struct aiocb ** __restrict acbs, int nacb,
1.24 misho 229: struct sigevent *sig);
230: #endif
231: /*
232: * io_rreadv() - Raw VFS bulk read function
233: *
234: * @fd = File handle
235: * @bufs = Read buffers
236: * @nbufs = Number of read buffers
237: * @offset = Read from position, if -1 read nbytes from current position
238: * @update = Update file handle position !0
239: * return: -1 error or !=-1 readed bytes
240: */
241: int io_rreadv(int fd, struct iovec * __restrict bufs, int nbufs, off_t offset,
242: int update);
243: /*
244: * io_rwritev() - Raw VFS bulk write function
245: *
246: * @fd = File handle
247: * @bufs = Write buffers
248: * @nbufs = Number of write buffers
249: * @offset = Write to position, if -1 write nbytes to current position
250: * @update = Update file handle position !0
251: * return: -1 error or !=-1 written bytes
252: */
253: int io_rwritev(int fd, struct iovec * __restrict bufs, int nbufs, off_t offset,
254: int update);
1.5 misho 255: /*
1.17 misho 256: * io_rread() - Raw VFS read function
1.16 misho 257: *
1.5 misho 258: * @fd = File handle
259: * @buf = Read buffer
260: * @nbytes = Read buffer size
261: * @offset = Read from position, if -1 read nbytes from current position
262: * @update = Update file handle position !0
263: * return: -1 error or !=-1 readed bytes
264: */
1.30 misho 265: int io_rread(int fd, void * __restrict buf, size_t nbytes, off_t offset,
1.24 misho 266: int update);
1.5 misho 267: /*
1.17 misho 268: * io_rwrite() - Raw VFS write function
1.16 misho 269: *
1.5 misho 270: * @fd = File handle
271: * @buf = Write buffer
272: * @nbytes = Write bytes from buffer
273: * @offset = Write at position, if -1 write nbytes from current position
274: * @update = Update file handle position !0
1.24 misho 275: * return: -1 error or !=-1 written bytes
1.5 misho 276: */
1.30 misho 277: int io_rwrite(int fd, void * __restrict buf, size_t nbytes, off_t offset,
1.24 misho 278: int update);
1.5 misho 279:
280: /* Disk I/O helper macros */
281: #define io_read(f, b, n) io_rread(f, b, n, -1, 1)
282: #define io_write(f, b, n) io_rwrite(f, b, n, -1, 1)
283:
284:
1.7 misho 285: /* Crypto framework */
286:
287: /*
1.17 misho 288: * ioCipher() - Cipher wrapper for all supported crypto algorythms
1.16 misho 289: *
1.7 misho 290: * @pInput = input buffer
291: * @inLen = input buffer len
1.29 misho 292: * @ppOutput = output allocated buffe, must be e_free after use
1.7 misho 293: * @Cipher = cipher engine, like EVP_bf_cbc() or etc...
294: * @pKey = key
295: * @pIV = IV, salt (8 bytes)
296: * @nMode = Mode 0 - decrypting or 1 - encrypting
297: * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
298: */
299: int ioCipher(unsigned char *pInput, int inLen, unsigned char **ppOutput, const EVP_CIPHER *Cipher,
300: unsigned char *pKey, unsigned char *pIV, int nMode);
301:
302: /*
1.17 misho 303: * io_Blowfish() - Blowfish cipher algorythm, work with ASCII hex strings
1.16 misho 304: *
1.7 misho 305: * @pInput = input buffer
306: * @inLen = input buffer len
1.29 misho 307: * @ppOutput = output allocated buffe, must be e_free after use
1.7 misho 308: * @pKey = key
309: * @pIV = IV, salt (8 bytes)
310: * @nMode = Mode 0 - decrypting or 1 - encrypting
311: * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
312: */
1.8 misho 313: int io_Blowfish(unsigned char *pInput, int inLen, unsigned char **ppOutput,
314: unsigned char *pKey, unsigned char *pIV, int nMode);
1.12 misho 315: /*
1.17 misho 316: * io_ctr_AES() - Encrypt/Decrypt stream cipher CTR_AES
1.16 misho 317: *
1.12 misho 318: * @pInput = Input buffer with ASCII
319: * @inLen = Input buffer data length
1.29 misho 320: * @ppOutput = Output buffer with cipher data, must be e_free after use
1.12 misho 321: * @pKey = Key
322: * @IV = IVector/Nonce/Counter, Warning: IV must be variable, because we write there!!!
323: * return: -1 error or >-1 how many cipher blocks proceeded
324: */
325: int io_ctr_AES(unsigned char *pInput, int inLen, unsigned char **ppOutput,
326: unsigned char *pKey, unsigned char IV[AES_BLOCK_SIZE]);
327:
328:
329: /*
1.17 misho 330: * ioAllocPTY() - Allocate new PTY and TTY
1.16 misho 331: *
1.12 misho 332: * @ptyfd = master fd, pty
333: * @ttyfd = slave fd, tty
334: * @name = tty device name if not null
335: * @namesiz = name length, must be above 63 bytes.
336: * @term = termios for terminal
337: * @winz = winsize for terminal
338: * return: -1 error or 0 ok
339: */
1.30 misho 340: int ioAllocPTY(int *ptyfd, int *ttyfd, char * __restrict name, int namesiz,
1.12 misho 341: struct termios * __restrict term, struct winsize * __restrict winz);
342: /*
1.17 misho 343: * ioFreePTY() - Release PTY and TTY device
1.16 misho 344: *
1.12 misho 345: * @ptyfd = master fd, pty (==-1 skip closing pty)
346: * @ttyname = tty filename
347: * return: none
348: */
1.30 misho 349: void ioFreePTY(int ptyfd, const char *ttyname);
1.12 misho 350: /*
1.17 misho 351: * ioChgWinPTY() - Change window size of PTY
1.16 misho 352: *
1.12 misho 353: * @ptyfd = master fd, pty
354: * @row = row
355: * @col = col
356: * @xpxl = x pixels
357: * @ypxl = y pixels
358: * return: -1 error or 0 ok
359: */
1.30 misho 360: int ioChgWinPTY(int ptyfd, unsigned short row, unsigned short col,
1.12 misho 361: unsigned short xpxl, unsigned short ypxl);
362: /*
1.17 misho 363: * ioSetOwnerTTY() - Set owner to TTY
1.16 misho 364: *
1.12 misho 365: * @ttyname = tty filename
366: * @UID = uid
367: * @GID = gid
368: * return: -1 error or 0 ok
369: */
370: int ioSetOwnerTTY(const char *ttyname, uid_t UID, gid_t GID);
371: /*
1.17 misho 372: * ioSetSidTTY() - Makes the process's controlling TTY and sets it to sane modes.
1.16 misho 373: *
1.12 misho 374: * @ttyfd = slave fd, tty
375: * @ttyname = tty filename
376: * return: -1 error or 0 ok
377: */
378: int ioSetSidTTY(int *ttyfd, const char *ttyname);
379: /*
1.17 misho 380: * ioSetRAWMode() - Enter into RAW mode
1.16 misho 381: *
1.12 misho 382: * @fd = tty fd
383: * @otio = saved old termios for later restore if !=NULL
384: * return: -1 error or 0 ok
385: */
1.30 misho 386: int ioSetRAWMode(int fd, struct termios *otio);
1.12 misho 387: /*
1.17 misho 388: * ioRestoreMode() - Restore termios to tty fd
1.16 misho 389: *
1.12 misho 390: * @fd = tty fd
391: * @tio = termios structure for restore
392: * return: -1 error or 0 ok
393: */
1.30 misho 394: int ioRestoreMode(int fd, struct termios tio);
1.12 misho 395: /*
1.17 misho 396: * ioForkPTY() - Fork new process with session leader and new TTY
1.16 misho 397: *
1.12 misho 398: * @ptyfd = master fd, pty
399: * @name = tty device name if not null
400: * @namesiz = name length, must be above 63 bytes.
401: * @term = termios for terminal
402: * @winz = winsize for terminal
403: * @otio = old termios structure for restore
404: * return: -1 error, 0 child process or >0 parent: pid of child
405: */
406: pid_t ioForkPTY(int *ptyfd, char * __restrict name, int namesiz, struct termios * __restrict term,
407: struct winsize * __restrict winz, struct termios * __restrict otio);
408:
409: /*
1.17 misho 410: * ioCreatePIDFile() - Create PID file
1.16 misho 411: *
1.12 misho 412: * @csName = PID filename
413: * @ifExists = !=0 if filename exists return error
414: * return: -1 error or 0 ok
415: */
1.30 misho 416: int ioCreatePIDFile(const char *csName, int ifExists);
1.7 misho 417:
1.13 misho 418: /*
1.17 misho 419: * ioSendFile() - AITNET sendfile() userland implementation, not dependant from OS
1.16 misho 420: *
1.13 misho 421: * @s = socket
422: * @csFile = file for send
423: * @sendLen = bytes to send, if 0 send all data
424: * @offset = start file offset
425: * @sndbuf = SO_SNDBUF value, if 0 use default
426: * return: 0 error, >0 ok, sended bytes
427: */
428: size_t ioSendFile(int s, const char *csFile, size_t sendLen, off_t offset, int sndbuf);
429: /*
1.17 misho 430: * ioRecvFile() - Receive file from socket, fastest (zero-copy) way
1.16 misho 431: *
1.13 misho 432: * @s = socket
433: * @csFile = file for receive
434: * @recvLen = receive bytes
435: * @over = overwrite file if exists with mode like 0644
436: * @rcvbuf = SO_RCVBUF value, if 0 use default
437: * return: 0 error, >0 ok, received bytes
438: */
439: size_t ioRecvFile(int s, const char *csFile, size_t recvLen, int over, int rcvbuf);
440:
1.31 misho 441: /*
442: * ioRealFileName() - Get real file name
443: *
444: * @fname = filename
445: * return: =NULL error or !=NULL real filename, should be free with e_free()
446: */
447: char *ioRealFileName(const char *fname);
1.7 misho 448:
1.14 misho 449: /* Buffered file access over memory block */
450:
451: /*
1.17 misho 452: * io_fmemopen() - File buffered stream operations over memory block
1.14 misho 453: *
454: * @base = Base address of memory block, if =NULL Infinit length(auto-grow)
455: * @basesize = Size of memory block
456: * return: NULL error or !=NULL Opened file resource
457: */
458: FILE *io_fmemopen(void ** __restrict base, off_t basesize);
459: /*
1.17 misho 460: * io_fmapopen() - File buffered stream operations over MMAP block
1.14 misho 461: *
462: * @csFile = Filename for MMAP, if =NULL private MMAP block
463: * @mode = File open mode
464: * @perm = If file not exists will be created with this access permissions
465: * @prot = MMAP protection
466: * @flags = MMAP mode flags
467: * @offset = Map from file offset, if csFile==NULL then this is size of MMAP private block
468: * return: NULL error or !=NULL Opened file resource
469: */
470: FILE *io_fmapopen(const char *csFile, int mode, int perm, int prot, int flags, off_t offset);
471: /*
1.17 misho 472: * io_fd2buf() - Convert open file handle to buffered file I/O
1.14 misho 473: *
474: * @fd = File handle
475: * @mode = Permissions for new buffered file I/O
476: * return: NULL error or open buffered file
477: */
1.30 misho 478: FILE *io_fd2buf(int fd, const char *mode);
1.14 misho 479: /*
1.17 misho 480: * io_dumbFile() - Create empry or dumb file with fixed size
1.14 misho 481: *
482: * @csFile = Filename for create
483: * @mode = File access permissions
484: * @size = File size
485: * return: -1 error or open file handle
486: */
487: int io_dumbFile(const char *csFile, int mode, off_t size);
488:
489:
1.32 misho 490: /*
491: * io_get1stiface() - Get first interface of host
492: *
493: * @szIface = interface string buffer
494: * @iflen = size of interface buffer
495: * return: -1 error or 0 ok
496: */
497: int io_get1stiface(char *szIface, int iflen);
498: /*
499: * io_etherOpen() - Open BPF interface to device
500: *
501: * @csIface = interface name
502: * @flags = open flags
503: * @whdr = with complete headers
1.33 misho 504: * @wdlt = with data link type
1.32 misho 505: * @buflen = buffer length
506: * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
507: * return: -1 error or >-1 bpf handle
508: */
1.33 misho 509: int io_etherOpen(const char *csIface, int flags, int whdr, int wdlt,
1.32 misho 510: unsigned int *buflen, void **zcbuf);
511: /*
512: * io_etherClose() - Close BPF interface
513: *
514: * @eth = bpf handle
515: * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
516: * return: none
517: */
518: void io_etherClose(int eth, void **zcbuf);
519:
520: /*
1.36 misho 521: * io_etherFilter() - BPF filter routine
522: *
523: * @eth = bpf handle
524: * @io = filter direction
525: * (IO_ETHER_FILTER_PROMISC|IO_ETHER_FILTER_NOTREAD|IO_ETHER_FILTER_READ|IO_ETHER_FILTER_WRITE)
526: * @insn = BPF filter instruction array
527: * @insnlen = Length of BPF filter instruction array
528: * return: -1 error or 0 ok
529: */
530: int io_etherFilter(int eth, int io, struct bpf_insn * __restrict insn, size_t insnlen);
531:
532: /*
1.32 misho 533: * io_etherSend() - Send packet to bpf
534: *
535: * @eth = bpf handle
536: * @buf = buffer
537: * @buflen = buffer length
538: * return: -1 error or !=-1 written bytes
539: */
540: ssize_t io_etherSend(int eth, const void *buf, size_t buflen);
541: /*
542: * io_etherRecv() - Receive packet from bpf
543: *
544: * @eth = bpf handle
545: * @buf = buffer
546: * @buflen = buffer length
547: * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
548: * return: -1 error or !=-1 readed bytes
549: */
550: ssize_t io_etherRecv(int eth, void * __restrict buf,
551: size_t buflen, void * __restrict zcbuf);
552:
553:
1.1 misho 554: #endif
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