Annotation of libaitio/inc/aitio.h, revision 1.35.4.1
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 $
1.35.4.1! misho 6: * $Id: aitio.h,v 1.35 2013/09/02 11:16:27 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>
1.7 misho 65:
66:
1.21 misho 67: #ifndef STRSIZ
1.34 misho 68: #define STRSIZ 256
1.21 misho 69: #endif
70:
1.34 misho 71: #define IO_SOCK_ROLE_CLIENT 0
72: #define IO_SOCK_ROLE_SERVER 1
73:
1.35.4.1! misho 74: #define IO_ETHER_FILTER_PROMISC 0
! 75: #define IO_ETHER_FILTER_NOTREAD -1
! 76: #define IO_ETHER_FILTER_READ 1
! 77: #define IO_ETHER_FILTER_WRITE 2
! 78:
1.34 misho 79:
1.35 misho 80: typedef struct tagCliSock sock_cli_t;
81: typedef void *(*sock_cb_t)(sock_cli_t*);
82: struct tagCliSock {
83: void *cli_parent;
84: pthread_t cli_tid;
85: int cli_fd;
86: int cli_pty;
87: sockaddr_t cli_addr;
88: char cli_name[64];
89:
90: sock_cb_t cli_func;
91: void *cli_arg;
92:
93: ait_val_t cli_buf;
94:
95: TAILQ_ENTRY(tagCliSock) cli_node;
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;
103: sockaddr_t sock_addr;
104: sockaddr_t sock_peer;
1.34 misho 105:
1.35 misho 106: ait_val_t sock_buf;
1.34 misho 107:
1.35 misho 108: pthread_mutex_t sock_mtx;
109: TAILQ_HEAD(, tagCliSock) sock_cli;
1.34 misho 110: } sock_t;
111:
1.15 misho 112:
1.1 misho 113: // io_GetErrno() Get error code of last operation
1.30 misho 114: int io_GetErrno();
1.1 misho 115: // io_GetError() Get error text of last operation
1.30 misho 116: const char *io_GetError();
1.1 misho 117:
118:
1.12 misho 119: /*
1.34 misho 120: * ioInitSocket() - Init socket and allocate resources
121: *
122: * @role = Socket role
123: * @type = Socket type
124: * @proto = Socket protocol
125: * @addr = Bind to address
126: * @port = Bind to port
127: * @buflen = Socket buffer, optional if =0 == BUFSIZ
128: * return: NULL error or !=NULL created socket
129: */
130: sock_t *ioInitSocket(int role, int type, int proto,
131: const char *addr, unsigned short port, size_t buflen);
132: /*
133: * ioCloseSocket() - Close socket and free resources
134: *
135: * @s = Socket
136: * return: none
137: */
138: void ioCloseSocket(sock_t ** __restrict s);
139: /*
140: * ioUpSocket() - Setup socket for use
141: *
142: * @s = Socket
143: * @arg = Server role = listen backlog queue and Client role = peer address
144: * return: -1 error or 0 ok
145: */
146: int ioUpSocket(sock_t * __restrict s, void *arg);
1.35 misho 147: /*
148: * ioAcceptSocket() - Accept clients
149: *
150: * @s = Socket
151: * @f = callback function for client handling
152: * @arg = optional argument for callback function
153: * return: -1 error or 0 ok
154: */
155: int ioAcceptSocket(sock_t * __restrict s, sock_cb_t f, void *arg);
1.34 misho 156:
157: /*
1.17 misho 158: * ioPromptRead() - Read data from input h[0] with prompt to output h[1]
1.16 misho 159: *
1.1 misho 160: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
161: * @csPrompt = Prompt before input, may be NULL
162: * @psData = Readed data
163: * @dataLen = Length of data
164: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
165: */
166: int ioPromptRead(int *h, const char *csPrompt, char * __restrict psData, int dataLen);
167: /*
1.17 misho 168: * ioPromptPassword() - Read password from input h[0] with prompt to output h[1]
1.16 misho 169: *
1.1 misho 170: * @h = file handles h[0] = input, h[1] = output, if NULL use stdin, stdout
171: * @csPrompt = Prompt before input, may be NULL
172: * @psPass = Readed password
173: * @passLen = Length of password
174: * @confirm = Confirm password, 0 - get password, !=0 Ask for confirmation
175: * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars
176: */
177: int ioPromptPassword(int *h, const char *csPrompt, char * __restrict psPass, int passLen, int confirm);
178:
1.10 misho 179:
180: /*
1.17 misho 181: * ioMkDir() - Function for racursive directory creation and validation
1.16 misho 182: *
1.5 misho 183: * @csDir = Full directory path
184: * @mode = Mode for directory creation if missing dir
185: * return: -1 error, 0 directory path exist, >0 created missing dirs
186: */
187: int ioMkDir(const char *csDir, int mode);
188:
1.6 misho 189: /*
1.17 misho 190: * ioWatchDirLoop() - Function for watching changes in directory and fire callback
1.16 misho 191: *
1.6 misho 192: * @csDir = Full directory path
193: * @callback = Callback if raise event! nOp -1 delete, 0 change/move, 1 create
194: * return: -1 error, !=-1 ok, number of total signaled events
195: */
196: int ioWatchDirLoop(const char *csDir, int (*callback)(const char *csName, int nOp));
197:
1.5 misho 198:
1.24 misho 199: #ifdef AIO_OPS
200: /*
201: * io_aiobulk() - AIO bulk R/W function
202: *
203: * @mode = Bulk wait mode
204: * @acbs = List of aiocb structures
205: * @nacb = Number of aiocb in list
206: * @sig = Event for completed operations, may be =NULL
207: * return: -1 error or 0 ok
208: */
1.30 misho 209: int io_aiobulk(int mode, struct aiocb ** __restrict acbs, int nacb,
1.24 misho 210: struct sigevent *sig);
211: #endif
212: /*
213: * io_rreadv() - Raw VFS bulk read function
214: *
215: * @fd = File handle
216: * @bufs = Read buffers
217: * @nbufs = Number of read buffers
218: * @offset = Read from position, if -1 read nbytes from current position
219: * @update = Update file handle position !0
220: * return: -1 error or !=-1 readed bytes
221: */
222: int io_rreadv(int fd, struct iovec * __restrict bufs, int nbufs, off_t offset,
223: int update);
224: /*
225: * io_rwritev() - Raw VFS bulk write function
226: *
227: * @fd = File handle
228: * @bufs = Write buffers
229: * @nbufs = Number of write buffers
230: * @offset = Write to position, if -1 write nbytes to current position
231: * @update = Update file handle position !0
232: * return: -1 error or !=-1 written bytes
233: */
234: int io_rwritev(int fd, struct iovec * __restrict bufs, int nbufs, off_t offset,
235: int update);
1.5 misho 236: /*
1.17 misho 237: * io_rread() - Raw VFS read function
1.16 misho 238: *
1.5 misho 239: * @fd = File handle
240: * @buf = Read buffer
241: * @nbytes = Read buffer size
242: * @offset = Read from position, if -1 read nbytes from current position
243: * @update = Update file handle position !0
244: * return: -1 error or !=-1 readed bytes
245: */
1.30 misho 246: int io_rread(int fd, void * __restrict buf, size_t nbytes, off_t offset,
1.24 misho 247: int update);
1.5 misho 248: /*
1.17 misho 249: * io_rwrite() - Raw VFS write function
1.16 misho 250: *
1.5 misho 251: * @fd = File handle
252: * @buf = Write buffer
253: * @nbytes = Write bytes from buffer
254: * @offset = Write at position, if -1 write nbytes from current position
255: * @update = Update file handle position !0
1.24 misho 256: * return: -1 error or !=-1 written bytes
1.5 misho 257: */
1.30 misho 258: int io_rwrite(int fd, void * __restrict buf, size_t nbytes, off_t offset,
1.24 misho 259: int update);
1.5 misho 260:
261: /* Disk I/O helper macros */
262: #define io_read(f, b, n) io_rread(f, b, n, -1, 1)
263: #define io_write(f, b, n) io_rwrite(f, b, n, -1, 1)
264:
265:
1.7 misho 266: /* Crypto framework */
267:
268: /*
1.17 misho 269: * ioCipher() - Cipher wrapper for all supported crypto algorythms
1.16 misho 270: *
1.7 misho 271: * @pInput = input buffer
272: * @inLen = input buffer len
1.29 misho 273: * @ppOutput = output allocated buffe, must be e_free after use
1.7 misho 274: * @Cipher = cipher engine, like EVP_bf_cbc() or etc...
275: * @pKey = key
276: * @pIV = IV, salt (8 bytes)
277: * @nMode = Mode 0 - decrypting or 1 - encrypting
278: * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
279: */
280: int ioCipher(unsigned char *pInput, int inLen, unsigned char **ppOutput, const EVP_CIPHER *Cipher,
281: unsigned char *pKey, unsigned char *pIV, int nMode);
282:
283: /*
1.17 misho 284: * io_Blowfish() - Blowfish cipher algorythm, work with ASCII hex strings
1.16 misho 285: *
1.7 misho 286: * @pInput = input buffer
287: * @inLen = input buffer len
1.29 misho 288: * @ppOutput = output allocated buffe, must be e_free after use
1.7 misho 289: * @pKey = key
290: * @pIV = IV, salt (8 bytes)
291: * @nMode = Mode 0 - decrypting or 1 - encrypting
292: * return: 0 not present data or error!; >0 number of processed and returned bytes into ppOutput
293: */
1.8 misho 294: int io_Blowfish(unsigned char *pInput, int inLen, unsigned char **ppOutput,
295: unsigned char *pKey, unsigned char *pIV, int nMode);
1.12 misho 296: /*
1.17 misho 297: * io_ctr_AES() - Encrypt/Decrypt stream cipher CTR_AES
1.16 misho 298: *
1.12 misho 299: * @pInput = Input buffer with ASCII
300: * @inLen = Input buffer data length
1.29 misho 301: * @ppOutput = Output buffer with cipher data, must be e_free after use
1.12 misho 302: * @pKey = Key
303: * @IV = IVector/Nonce/Counter, Warning: IV must be variable, because we write there!!!
304: * return: -1 error or >-1 how many cipher blocks proceeded
305: */
306: int io_ctr_AES(unsigned char *pInput, int inLen, unsigned char **ppOutput,
307: unsigned char *pKey, unsigned char IV[AES_BLOCK_SIZE]);
308:
309:
310: /*
1.17 misho 311: * ioAllocPTY() - Allocate new PTY and TTY
1.16 misho 312: *
1.12 misho 313: * @ptyfd = master fd, pty
314: * @ttyfd = slave fd, tty
315: * @name = tty device name if not null
316: * @namesiz = name length, must be above 63 bytes.
317: * @term = termios for terminal
318: * @winz = winsize for terminal
319: * return: -1 error or 0 ok
320: */
1.30 misho 321: int ioAllocPTY(int *ptyfd, int *ttyfd, char * __restrict name, int namesiz,
1.12 misho 322: struct termios * __restrict term, struct winsize * __restrict winz);
323: /*
1.17 misho 324: * ioFreePTY() - Release PTY and TTY device
1.16 misho 325: *
1.12 misho 326: * @ptyfd = master fd, pty (==-1 skip closing pty)
327: * @ttyname = tty filename
328: * return: none
329: */
1.30 misho 330: void ioFreePTY(int ptyfd, const char *ttyname);
1.12 misho 331: /*
1.17 misho 332: * ioChgWinPTY() - Change window size of PTY
1.16 misho 333: *
1.12 misho 334: * @ptyfd = master fd, pty
335: * @row = row
336: * @col = col
337: * @xpxl = x pixels
338: * @ypxl = y pixels
339: * return: -1 error or 0 ok
340: */
1.30 misho 341: int ioChgWinPTY(int ptyfd, unsigned short row, unsigned short col,
1.12 misho 342: unsigned short xpxl, unsigned short ypxl);
343: /*
1.17 misho 344: * ioSetOwnerTTY() - Set owner to TTY
1.16 misho 345: *
1.12 misho 346: * @ttyname = tty filename
347: * @UID = uid
348: * @GID = gid
349: * return: -1 error or 0 ok
350: */
351: int ioSetOwnerTTY(const char *ttyname, uid_t UID, gid_t GID);
352: /*
1.17 misho 353: * ioSetSidTTY() - Makes the process's controlling TTY and sets it to sane modes.
1.16 misho 354: *
1.12 misho 355: * @ttyfd = slave fd, tty
356: * @ttyname = tty filename
357: * return: -1 error or 0 ok
358: */
359: int ioSetSidTTY(int *ttyfd, const char *ttyname);
360: /*
1.17 misho 361: * ioSetRAWMode() - Enter into RAW mode
1.16 misho 362: *
1.12 misho 363: * @fd = tty fd
364: * @otio = saved old termios for later restore if !=NULL
365: * return: -1 error or 0 ok
366: */
1.30 misho 367: int ioSetRAWMode(int fd, struct termios *otio);
1.12 misho 368: /*
1.17 misho 369: * ioRestoreMode() - Restore termios to tty fd
1.16 misho 370: *
1.12 misho 371: * @fd = tty fd
372: * @tio = termios structure for restore
373: * return: -1 error or 0 ok
374: */
1.30 misho 375: int ioRestoreMode(int fd, struct termios tio);
1.12 misho 376: /*
1.17 misho 377: * ioForkPTY() - Fork new process with session leader and new TTY
1.16 misho 378: *
1.12 misho 379: * @ptyfd = master fd, pty
380: * @name = tty device name if not null
381: * @namesiz = name length, must be above 63 bytes.
382: * @term = termios for terminal
383: * @winz = winsize for terminal
384: * @otio = old termios structure for restore
385: * return: -1 error, 0 child process or >0 parent: pid of child
386: */
387: pid_t ioForkPTY(int *ptyfd, char * __restrict name, int namesiz, struct termios * __restrict term,
388: struct winsize * __restrict winz, struct termios * __restrict otio);
389:
390: /*
1.17 misho 391: * ioCreatePIDFile() - Create PID file
1.16 misho 392: *
1.12 misho 393: * @csName = PID filename
394: * @ifExists = !=0 if filename exists return error
395: * return: -1 error or 0 ok
396: */
1.30 misho 397: int ioCreatePIDFile(const char *csName, int ifExists);
1.7 misho 398:
1.13 misho 399: /*
1.17 misho 400: * ioSendFile() - AITNET sendfile() userland implementation, not dependant from OS
1.16 misho 401: *
1.13 misho 402: * @s = socket
403: * @csFile = file for send
404: * @sendLen = bytes to send, if 0 send all data
405: * @offset = start file offset
406: * @sndbuf = SO_SNDBUF value, if 0 use default
407: * return: 0 error, >0 ok, sended bytes
408: */
409: size_t ioSendFile(int s, const char *csFile, size_t sendLen, off_t offset, int sndbuf);
410: /*
1.17 misho 411: * ioRecvFile() - Receive file from socket, fastest (zero-copy) way
1.16 misho 412: *
1.13 misho 413: * @s = socket
414: * @csFile = file for receive
415: * @recvLen = receive bytes
416: * @over = overwrite file if exists with mode like 0644
417: * @rcvbuf = SO_RCVBUF value, if 0 use default
418: * return: 0 error, >0 ok, received bytes
419: */
420: size_t ioRecvFile(int s, const char *csFile, size_t recvLen, int over, int rcvbuf);
421:
1.31 misho 422: /*
423: * ioRealFileName() - Get real file name
424: *
425: * @fname = filename
426: * return: =NULL error or !=NULL real filename, should be free with e_free()
427: */
428: char *ioRealFileName(const char *fname);
1.7 misho 429:
1.14 misho 430: /* Buffered file access over memory block */
431:
432: /*
1.17 misho 433: * io_fmemopen() - File buffered stream operations over memory block
1.14 misho 434: *
435: * @base = Base address of memory block, if =NULL Infinit length(auto-grow)
436: * @basesize = Size of memory block
437: * return: NULL error or !=NULL Opened file resource
438: */
439: FILE *io_fmemopen(void ** __restrict base, off_t basesize);
440: /*
1.17 misho 441: * io_fmapopen() - File buffered stream operations over MMAP block
1.14 misho 442: *
443: * @csFile = Filename for MMAP, if =NULL private MMAP block
444: * @mode = File open mode
445: * @perm = If file not exists will be created with this access permissions
446: * @prot = MMAP protection
447: * @flags = MMAP mode flags
448: * @offset = Map from file offset, if csFile==NULL then this is size of MMAP private block
449: * return: NULL error or !=NULL Opened file resource
450: */
451: FILE *io_fmapopen(const char *csFile, int mode, int perm, int prot, int flags, off_t offset);
452: /*
1.17 misho 453: * io_fd2buf() - Convert open file handle to buffered file I/O
1.14 misho 454: *
455: * @fd = File handle
456: * @mode = Permissions for new buffered file I/O
457: * return: NULL error or open buffered file
458: */
1.30 misho 459: FILE *io_fd2buf(int fd, const char *mode);
1.14 misho 460: /*
1.17 misho 461: * io_dumbFile() - Create empry or dumb file with fixed size
1.14 misho 462: *
463: * @csFile = Filename for create
464: * @mode = File access permissions
465: * @size = File size
466: * return: -1 error or open file handle
467: */
468: int io_dumbFile(const char *csFile, int mode, off_t size);
469:
470:
1.32 misho 471: /*
472: * io_get1stiface() - Get first interface of host
473: *
474: * @szIface = interface string buffer
475: * @iflen = size of interface buffer
476: * return: -1 error or 0 ok
477: */
478: int io_get1stiface(char *szIface, int iflen);
479: /*
480: * io_etherOpen() - Open BPF interface to device
481: *
482: * @csIface = interface name
483: * @flags = open flags
484: * @whdr = with complete headers
1.33 misho 485: * @wdlt = with data link type
1.32 misho 486: * @buflen = buffer length
487: * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
488: * return: -1 error or >-1 bpf handle
489: */
1.33 misho 490: int io_etherOpen(const char *csIface, int flags, int whdr, int wdlt,
1.32 misho 491: unsigned int *buflen, void **zcbuf);
492: /*
493: * io_etherClose() - Close BPF interface
494: *
495: * @eth = bpf handle
496: * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
497: * return: none
498: */
499: void io_etherClose(int eth, void **zcbuf);
500:
501: /*
1.35.4.1! misho 502: * io_etherFilter() - BPF filter routine
! 503: *
! 504: * @eth = bpf handle
! 505: * @io = filter direction
! 506: * (IO_ETHER_FILTER_PROMISC|IO_ETHER_FILTER_NOTREAD|IO_ETHER_FILTER_READ|IO_ETHER_FILTER_WRITE)
! 507: * @insn = BPF filter instruction array
! 508: * @insnlen = Length of BPF filter instruction array
! 509: * return: -1 error or 0 ok
! 510: */
! 511: int io_etherFilter(int eth, int io, struct bpf_insn * __restrict insn, size_t insnlen);
! 512:
! 513: /*
1.32 misho 514: * io_etherSend() - Send packet to bpf
515: *
516: * @eth = bpf handle
517: * @buf = buffer
518: * @buflen = buffer length
519: * return: -1 error or !=-1 written bytes
520: */
521: ssize_t io_etherSend(int eth, const void *buf, size_t buflen);
522: /*
523: * io_etherRecv() - Receive packet from bpf
524: *
525: * @eth = bpf handle
526: * @buf = buffer
527: * @buflen = buffer length
528: * @zcbuf = zero copy buffer, if BPF supports it and isn't NULL
529: * return: -1 error or !=-1 readed bytes
530: */
531: ssize_t io_etherRecv(int eth, void * __restrict buf,
532: size_t buflen, void * __restrict zcbuf);
533:
534:
1.1 misho 535: #endif
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