Annotation of libaitio/inc/aitio.h, revision 1.36.2.2
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 $
1.36.2.2! misho 6: * $Id: aitio.h,v 1.36.2.1 2013/11/21 12:54:21 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);
143: /*
144: * ioUpSocket() - Setup socket for use
145: *
146: * @s = Socket
147: * @arg = Server role = listen backlog queue and Client role = peer address
1.36.2.1 misho 148: * @timeout = Socket timeout in ms (default -1 infinit)
1.34 misho 149: * return: -1 error or 0 ok
150: */
1.36.2.1 misho 151: int ioUpSocket(sock_t * __restrict s, void *arg, int timeout);
152: /*
1.36.2.2! misho 153: * ioUpdTimerSocket() - Update timeout of socket
! 154: *
! 155: * @c = Client socket
! 156: * return: none
! 157: */
! 158: void ioUpdTimerSocket(sock_cli_t * __restrict c);
! 159: /*
1.36.2.1 misho 160: * ioLoopSocket() - Start socket scheduler
161: *
162: * @s = Socket
1.36.2.2! misho 163: * @rcb = Read callback
1.36.2.1 misho 164: * return: -1 error or return result from scheduler
165: */
1.36.2.2! misho 166: int ioLoopSocket(sock_t * __restrict s, sched_task_func_t rcb);
1.35 misho 167: /*
168: * ioAcceptSocket() - Accept clients
169: *
170: * @s = Socket
171: * @f = callback function for client handling
172: * @arg = optional argument for callback function
173: * return: -1 error or 0 ok
174: */
175: int ioAcceptSocket(sock_t * __restrict s, sock_cb_t f, void *arg);
1.34 misho 176:
177: /*
1.17 misho 178: * ioPromptRead() - Read data from input h[0] with prompt to output h[1]
1.16 misho 179: *
1.1 misho 180: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
181: * @csPrompt = Prompt before input, may be NULL
182: * @psData = Readed data
183: * @dataLen = Length of data
184: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
185: */
186: int ioPromptRead(int *h, const char *csPrompt, char * __restrict psData, int dataLen);
187: /*
1.17 misho 188: * ioPromptPassword() - Read password from input h[0] with prompt to output h[1]
1.16 misho 189: *
1.1 misho 190: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
191: * @csPrompt = Prompt before input, may be NULL
192: * @psPass = Readed password
193: * @passLen = Length of password
194: * @confirm = Confirm password, 0 - get password, !=0 Ask for confirmation
195: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
196: */
197: int ioPromptPassword(int *h, const char *csPrompt, char * __restrict psPass, int passLen, int confirm);
198:
1.10 misho 199:
200: /*
1.17 misho 201: * ioMkDir() - Function for racursive directory creation and validation
1.16 misho 202: *
1.5 misho 203: * @csDir = Full directory path
204: * @mode = Mode for directory creation if missing dir
205: * return: -1 error, 0 directory path exist, >0 created missing dirs
206: */
207: int ioMkDir(const char *csDir, int mode);
208:
1.6 misho 209: /*
1.17 misho 210: * ioWatchDirLoop() - Function for watching changes in directory and fire callback
1.16 misho 211: *
1.6 misho 212: * @csDir = Full directory path
213: * @callback = Callback if raise event! nOp -1 delete, 0 change/move, 1 create
214: * return: -1 error, !=-1 ok, number of total signaled events
215: */
216: int ioWatchDirLoop(const char *csDir, int (*callback)(const char *csName, int nOp));
217:
1.5 misho 218:
1.24 misho 219: #ifdef AIO_OPS
220: /*
221: * io_aiobulk() - AIO bulk R/W function
222: *
223: * @mode = Bulk wait mode
224: * @acbs = List of aiocb structures
225: * @nacb = Number of aiocb in list
226: * @sig = Event for completed operations, may be =NULL
227: * return: -1 error or 0 ok
228: */
1.30 misho 229: int io_aiobulk(int mode, struct aiocb ** __restrict acbs, int nacb,
1.24 misho 230: struct sigevent *sig);
231: #endif
232: /*
233: * io_rreadv() - Raw VFS bulk read function
234: *
235: * @fd = File handle
236: * @bufs = Read buffers
237: * @nbufs = Number of read buffers
238: * @offset = Read from position, if -1 read nbytes from current position
239: * @update = Update file handle position !0
240: * return: -1 error or !=-1 readed bytes
241: */
242: int io_rreadv(int fd, struct iovec * __restrict bufs, int nbufs, off_t offset,
243: int update);
244: /*
245: * io_rwritev() - Raw VFS bulk write function
246: *
247: * @fd = File handle
248: * @bufs = Write buffers
249: * @nbufs = Number of write buffers
250: * @offset = Write to position, if -1 write nbytes to current position
251: * @update = Update file handle position !0
252: * return: -1 error or !=-1 written bytes
253: */
254: int io_rwritev(int fd, struct iovec * __restrict bufs, int nbufs, off_t offset,
255: int update);
1.5 misho 256: /*
1.17 misho 257: * io_rread() - Raw VFS read function
1.16 misho 258: *
1.5 misho 259: * @fd = File handle
260: * @buf = Read buffer
261: * @nbytes = Read buffer size
262: * @offset = Read from position, if -1 read nbytes from current position
263: * @update = Update file handle position !0
264: * return: -1 error or !=-1 readed bytes
265: */
1.30 misho 266: int io_rread(int fd, void * __restrict buf, size_t nbytes, off_t offset,
1.24 misho 267: int update);
1.5 misho 268: /*
1.17 misho 269: * io_rwrite() - Raw VFS write function
1.16 misho 270: *
1.5 misho 271: * @fd = File handle
272: * @buf = Write buffer
273: * @nbytes = Write bytes from buffer
274: * @offset = Write at position, if -1 write nbytes from current position
275: * @update = Update file handle position !0
1.24 misho 276: * return: -1 error or !=-1 written bytes
1.5 misho 277: */
1.30 misho 278: int io_rwrite(int fd, void * __restrict buf, size_t nbytes, off_t offset,
1.24 misho 279: int update);
1.5 misho 280:
281: /* Disk I/O helper macros */
282: #define io_read(f, b, n) io_rread(f, b, n, -1, 1)
283: #define io_write(f, b, n) io_rwrite(f, b, n, -1, 1)
284:
285:
1.7 misho 286: /* Crypto framework */
287:
288: /*
1.17 misho 289: * ioCipher() - Cipher wrapper for all supported crypto algorythms
1.16 misho 290: *
1.7 misho 291: * @pInput = input buffer
292: * @inLen = input buffer len
1.29 misho 293: * @ppOutput = output allocated buffe, must be e_free after use
1.7 misho 294: * @Cipher = cipher engine, like EVP_bf_cbc() or etc...
295: * @pKey = key
296: * @pIV = IV, salt (8 bytes)
297: * @nMode = Mode 0 - decrypting or 1 - encrypting
298: * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
299: */
300: int ioCipher(unsigned char *pInput, int inLen, unsigned char **ppOutput, const EVP_CIPHER *Cipher,
301: unsigned char *pKey, unsigned char *pIV, int nMode);
302:
303: /*
1.17 misho 304: * io_Blowfish() - Blowfish cipher algorythm, work with ASCII hex strings
1.16 misho 305: *
1.7 misho 306: * @pInput = input buffer
307: * @inLen = input buffer len
1.29 misho 308: * @ppOutput = output allocated buffe, must be e_free after use
1.7 misho 309: * @pKey = key
310: * @pIV = IV, salt (8 bytes)
311: * @nMode = Mode 0 - decrypting or 1 - encrypting
312: * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
313: */
1.8 misho 314: int io_Blowfish(unsigned char *pInput, int inLen, unsigned char **ppOutput,
315: unsigned char *pKey, unsigned char *pIV, int nMode);
1.12 misho 316: /*
1.17 misho 317: * io_ctr_AES() - Encrypt/Decrypt stream cipher CTR_AES
1.16 misho 318: *
1.12 misho 319: * @pInput = Input buffer with ASCII
320: * @inLen = Input buffer data length
1.29 misho 321: * @ppOutput = Output buffer with cipher data, must be e_free after use
1.12 misho 322: * @pKey = Key
323: * @IV = IVector/Nonce/Counter, Warning: IV must be variable, because we write there!!!
324: * return: -1 error or >-1 how many cipher blocks proceeded
325: */
326: int io_ctr_AES(unsigned char *pInput, int inLen, unsigned char **ppOutput,
327: unsigned char *pKey, unsigned char IV[AES_BLOCK_SIZE]);
328:
329:
330: /*
1.17 misho 331: * ioAllocPTY() - Allocate new PTY and TTY
1.16 misho 332: *
1.12 misho 333: * @ptyfd = master fd, pty
334: * @ttyfd = slave fd, tty
335: * @name = tty device name if not null
336: * @namesiz = name length, must be above 63 bytes.
337: * @term = termios for terminal
338: * @winz = winsize for terminal
339: * return: -1 error or 0 ok
340: */
1.30 misho 341: int ioAllocPTY(int *ptyfd, int *ttyfd, char * __restrict name, int namesiz,
1.12 misho 342: struct termios * __restrict term, struct winsize * __restrict winz);
343: /*
1.17 misho 344: * ioFreePTY() - Release PTY and TTY device
1.16 misho 345: *
1.12 misho 346: * @ptyfd = master fd, pty (==-1 skip closing pty)
347: * @ttyname = tty filename
348: * return: none
349: */
1.30 misho 350: void ioFreePTY(int ptyfd, const char *ttyname);
1.12 misho 351: /*
1.17 misho 352: * ioChgWinPTY() - Change window size of PTY
1.16 misho 353: *
1.12 misho 354: * @ptyfd = master fd, pty
355: * @row = row
356: * @col = col
357: * @xpxl = x pixels
358: * @ypxl = y pixels
359: * return: -1 error or 0 ok
360: */
1.30 misho 361: int ioChgWinPTY(int ptyfd, unsigned short row, unsigned short col,
1.12 misho 362: unsigned short xpxl, unsigned short ypxl);
363: /*
1.17 misho 364: * ioSetOwnerTTY() - Set owner to TTY
1.16 misho 365: *
1.12 misho 366: * @ttyname = tty filename
367: * @UID = uid
368: * @GID = gid
369: * return: -1 error or 0 ok
370: */
371: int ioSetOwnerTTY(const char *ttyname, uid_t UID, gid_t GID);
372: /*
1.17 misho 373: * ioSetSidTTY() - Makes the process's controlling TTY and sets it to sane modes.
1.16 misho 374: *
1.12 misho 375: * @ttyfd = slave fd, tty
376: * @ttyname = tty filename
377: * return: -1 error or 0 ok
378: */
379: int ioSetSidTTY(int *ttyfd, const char *ttyname);
380: /*
1.17 misho 381: * ioSetRAWMode() - Enter into RAW mode
1.16 misho 382: *
1.12 misho 383: * @fd = tty fd
384: * @otio = saved old termios for later restore if !=NULL
385: * return: -1 error or 0 ok
386: */
1.30 misho 387: int ioSetRAWMode(int fd, struct termios *otio);
1.12 misho 388: /*
1.17 misho 389: * ioRestoreMode() - Restore termios to tty fd
1.16 misho 390: *
1.12 misho 391: * @fd = tty fd
392: * @tio = termios structure for restore
393: * return: -1 error or 0 ok
394: */
1.30 misho 395: int ioRestoreMode(int fd, struct termios tio);
1.12 misho 396: /*
1.17 misho 397: * ioForkPTY() - Fork new process with session leader and new TTY
1.16 misho 398: *
1.12 misho 399: * @ptyfd = master fd, pty
400: * @name = tty device name if not null
401: * @namesiz = name length, must be above 63 bytes.
402: * @term = termios for terminal
403: * @winz = winsize for terminal
404: * @otio = old termios structure for restore
405: * return: -1 error, 0 child process or >0 parent: pid of child
406: */
407: pid_t ioForkPTY(int *ptyfd, char * __restrict name, int namesiz, struct termios * __restrict term,
408: struct winsize * __restrict winz, struct termios * __restrict otio);
409:
410: /*
1.17 misho 411: * ioCreatePIDFile() - Create PID file
1.16 misho 412: *
1.12 misho 413: * @csName = PID filename
414: * @ifExists = !=0 if filename exists return error
415: * return: -1 error or 0 ok
416: */
1.30 misho 417: int ioCreatePIDFile(const char *csName, int ifExists);
1.7 misho 418:
1.13 misho 419: /*
1.17 misho 420: * ioSendFile() - AITNET sendfile() userland implementation, not dependant from OS
1.16 misho 421: *
1.13 misho 422: * @s = socket
423: * @csFile = file for send
424: * @sendLen = bytes to send, if 0 send all data
425: * @offset = start file offset
426: * @sndbuf = SO_SNDBUF value, if 0 use default
427: * return: 0 error, >0 ok, sended bytes
428: */
429: size_t ioSendFile(int s, const char *csFile, size_t sendLen, off_t offset, int sndbuf);
430: /*
1.17 misho 431: * ioRecvFile() - Receive file from socket, fastest (zero-copy) way
1.16 misho 432: *
1.13 misho 433: * @s = socket
434: * @csFile = file for receive
435: * @recvLen = receive bytes
436: * @over = overwrite file if exists with mode like 0644
437: * @rcvbuf = SO_RCVBUF value, if 0 use default
438: * return: 0 error, >0 ok, received bytes
439: */
440: size_t ioRecvFile(int s, const char *csFile, size_t recvLen, int over, int rcvbuf);
441:
1.31 misho 442: /*
443: * ioRealFileName() - Get real file name
444: *
445: * @fname = filename
446: * return: =NULL error or !=NULL real filename, should be free with e_free()
447: */
448: char *ioRealFileName(const char *fname);
1.7 misho 449:
1.14 misho 450: /* Buffered file access over memory block */
451:
452: /*
1.17 misho 453: * io_fmemopen() - File buffered stream operations over memory block
1.14 misho 454: *
455: * @base = Base address of memory block, if =NULL Infinit length(auto-grow)
456: * @basesize = Size of memory block
457: * return: NULL error or !=NULL Opened file resource
458: */
459: FILE *io_fmemopen(void ** __restrict base, off_t basesize);
460: /*
1.17 misho 461: * io_fmapopen() - File buffered stream operations over MMAP block
1.14 misho 462: *
463: * @csFile = Filename for MMAP, if =NULL private MMAP block
464: * @mode = File open mode
465: * @perm = If file not exists will be created with this access permissions
466: * @prot = MMAP protection
467: * @flags = MMAP mode flags
468: * @offset = Map from file offset, if csFile==NULL then this is size of MMAP private block
469: * return: NULL error or !=NULL Opened file resource
470: */
471: FILE *io_fmapopen(const char *csFile, int mode, int perm, int prot, int flags, off_t offset);
472: /*
1.17 misho 473: * io_fd2buf() - Convert open file handle to buffered file I/O
1.14 misho 474: *
475: * @fd = File handle
476: * @mode = Permissions for new buffered file I/O
477: * return: NULL error or open buffered file
478: */
1.30 misho 479: FILE *io_fd2buf(int fd, const char *mode);
1.14 misho 480: /*
1.17 misho 481: * io_dumbFile() - Create empry or dumb file with fixed size
1.14 misho 482: *
483: * @csFile = Filename for create
484: * @mode = File access permissions
485: * @size = File size
486: * return: -1 error or open file handle
487: */
488: int io_dumbFile(const char *csFile, int mode, off_t size);
489:
490:
1.32 misho 491: /*
492: * io_get1stiface() - Get first interface of host
493: *
494: * @szIface = interface string buffer
495: * @iflen = size of interface buffer
496: * return: -1 error or 0 ok
497: */
498: int io_get1stiface(char *szIface, int iflen);
499: /*
500: * io_etherOpen() - Open BPF interface to device
501: *
502: * @csIface = interface name
503: * @flags = open flags
504: * @whdr = with complete headers
1.33 misho 505: * @wdlt = with data link type
1.32 misho 506: * @buflen = buffer length
507: * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
508: * return: -1 error or >-1 bpf handle
509: */
1.33 misho 510: int io_etherOpen(const char *csIface, int flags, int whdr, int wdlt,
1.32 misho 511: unsigned int *buflen, void **zcbuf);
512: /*
513: * io_etherClose() - Close BPF interface
514: *
515: * @eth = bpf handle
516: * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
517: * return: none
518: */
519: void io_etherClose(int eth, void **zcbuf);
520:
521: /*
1.36 misho 522: * io_etherFilter() - BPF filter routine
523: *
524: * @eth = bpf handle
525: * @io = filter direction
526: * (IO_ETHER_FILTER_PROMISC|IO_ETHER_FILTER_NOTREAD|IO_ETHER_FILTER_READ|IO_ETHER_FILTER_WRITE)
527: * @insn = BPF filter instruction array
528: * @insnlen = Length of BPF filter instruction array
529: * return: -1 error or 0 ok
530: */
531: int io_etherFilter(int eth, int io, struct bpf_insn * __restrict insn, size_t insnlen);
532:
533: /*
1.32 misho 534: * io_etherSend() - Send packet to bpf
535: *
536: * @eth = bpf handle
537: * @buf = buffer
538: * @buflen = buffer length
539: * return: -1 error or !=-1 written bytes
540: */
541: ssize_t io_etherSend(int eth, const void *buf, size_t buflen);
542: /*
543: * io_etherRecv() - Receive packet from bpf
544: *
545: * @eth = bpf handle
546: * @buf = buffer
547: * @buflen = buffer length
548: * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
549: * return: -1 error or !=-1 readed bytes
550: */
551: ssize_t io_etherRecv(int eth, void * __restrict buf,
552: size_t buflen, void * __restrict zcbuf);
553:
554:
1.1 misho 555: #endif
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