--- libaitio/src/aitio.c 2011/02/10 19:45:07 1.2.2.2 +++ libaitio/src/aitio.c 2011/12/13 02:23:08 1.8 @@ -1,11 +1,48 @@ /************************************************************************* -* (C) 2010 AITNET ltd - Sofia/Bulgaria - -* by Michael Pounov +* (C) 2010 AITNET ltd - Sofia/Bulgaria - +* by Michael Pounov * * $Author: misho $ -* $Id: aitio.c,v 1.2.2.2 2011/02/10 19:45:07 misho Exp $ +* $Id: aitio.c,v 1.8 2011/12/13 02:23:08 misho Exp $ * -*************************************************************************/ +************************************************************************** +The ELWIX and AITNET software is distributed under the following +terms: + +All of the documentation and software included in the ELWIX and AITNET +Releases is copyrighted by ELWIX - Sofia/Bulgaria + +Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 + by Michael Pounov . All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +3. All advertising materials mentioning features or use of this software + must display the following acknowledgement: +This product includes software developed by Michael Pounov +ELWIX - Embedded LightWeight unIX and its contributors. +4. Neither the name of AITNET nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +SUCH DAMAGE. +*/ #include "global.h" @@ -21,19 +58,22 @@ char io_Error[STRSIZ]; // io_GetErrno() Get error code of last operation -inline int io_GetErrno() +inline int +io_GetErrno() { return io_Errno; } // io_GetError() Get error text of last operation -inline const char *io_GetError() +inline const char * +io_GetError() { return io_Error; } // io_SetErr() Set error to variables for internal use!!! -inline void io_SetErr(int eno, char *estr, ...) +inline void +io_SetErr(int eno, char *estr, ...) { va_list lst; @@ -53,7 +93,8 @@ inline void io_SetErr(int eno, char *estr, ...) * @dataLen = Length of data * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars */ -int ioPromptRead(int *h, const char *csPrompt, char * __restrict psData, int dataLen) +int +ioPromptRead(int *h, const char *csPrompt, char * __restrict psData, int dataLen) { int ok = 0; FILE *inp, *out; @@ -106,7 +147,8 @@ int ioPromptRead(int *h, const char *csPrompt, char * * @confirm = Confirm password, 0 - get password, !=0 Ask for confirmation * return: 0 EOF; -1 error:: can`t read; >0 count of readed chars */ -int ioPromptPassword(int *h, const char *csPrompt, char * __restrict psPass, int passLen, int confirm) +int +ioPromptPassword(int *h, const char *csPrompt, char * __restrict psPass, int passLen, int confirm) { int ret, ok = 0; FILE *inp, *out; @@ -190,7 +232,8 @@ next: * @endPos = Return end positions * return: NULL not match or error; !=NULL begin of matched data */ -const char *ioRegexVerify(const char *csRegex, const char *csData, int *startPos, int *endPos) +const char * +ioRegexVerify(const char *csRegex, const char *csData, int *startPos, int *endPos) { regex_t re; regmatch_t match; @@ -237,7 +280,8 @@ const char *ioRegexVerify(const char *csRegex, const c * @strLen = Length of string * return: 0 not match; >0 count of returned chars */ -int ioRegexGet(const char *csRegex, const char *csData, char * __restrict psString, int strLen) +int +ioRegexGet(const char *csRegex, const char *csData, char * __restrict psString, int strLen) { int sp, ep, len; const char *str; @@ -265,7 +309,8 @@ int ioRegexGet(const char *csRegex, const char *csData * @csNew = Data for replace * return: NULL not match or error; !=NULL allocated new string, must be free after use! */ -char *ioRegexReplace(const char *csRegex, const char *csData, const char *csNew) +char * +ioRegexReplace(const char *csRegex, const char *csData, const char *csNew) { int sp, ep, len; char *str = NULL; @@ -306,7 +351,56 @@ char *ioRegexReplace(const char *csRegex, const char * return str; } +/* + * ioStrAst() Function for evaluate string like asterisk variable "{text[:[-]#[:#]]}" + * @csString = Input string + * return: NULL error, !=NULL Allocated new string evaluated from input string, must be free() +*/ +char * +ioStrAst(const char *csString) +{ + char *ext, *str, *out = NULL; + int e[2] = { 0 }; + if (!csString) + return NULL; + + if (!strchr(csString, '{') || !strrchr(csString, '}')) { + memset(io_Error, 0, STRSIZ); + snprintf(io_Error, STRSIZ, "Error:: Invalid input string format ... " + "must be like {text[:[-]#[:#]]}"); + io_Errno = EINVAL; + return NULL; + } else { + str = strdup(strchr(csString, '{') + 1); + *strrchr(str, '}') = 0; + } + + if ((ext = strchr(str, ':'))) { + *ext++ = 0; + e[0] = strtol(ext, NULL, 0); + if ((ext = strchr(ext, ':'))) + e[1] = strtol(++ext, NULL, 0); + + /* make cut prefix */ + if (e[0] >= 0) + ext = str + e[0]; + else + ext = str + strlen(str) + e[0]; + /* make cut suffix */ + if (e[1] > 0) + *(ext + e[1]) = 0; + } else + /* ok, clear show */ + ext = str; + + out = strdup(ext); + free(str); + + return out; +} + + /* * ioMkDir() Function for racursive directory creation and validation * @csDir = Full directory path @@ -354,52 +448,281 @@ end: return cx; } - /* - * ioVarAst() Function for evaluate string like asterisk variable "{text[:[-]#[:#]]}" - * @csString = Input string - * return: NULL error, !=NULL Allocated new string evaluated from input string, must be free() + * ioWatchDirLoop() Function for watching changes in directory and fire callback + * @csDir = Full directory path + * @callback = Callback if raise event! nOp -1 delete, 0 change/move, 1 create + * return: -1 error, !=-1 ok, number of total signaled events */ -char * -ioVarAst(const char *csString) +int +ioWatchDirLoop(const char *csDir, int (*callback)(const char *csName, int nOp)) { - char *ext, *str, *out = NULL; - int e[2] = { 0 }; + glob_t g[2] = {{ 0 }, { 0 }}; + int d, kq, n = 0; + register int j, i; + struct kevent req, chg; + char wrk[MAXPATHLEN * 2], str[MAXPATHLEN] = { 0 }; - if (!csString) - return NULL; + if (!csDir || !callback) + return 0; - if (!strchr(csString, '{') || !strrchr(csString, '}')) { - memset(io_Error, 0, STRSIZ); - snprintf(io_Error, STRSIZ, "Error:: Invalid input string format ... " - "must be like {text[:[-]#[:#]]}"); - io_Errno = EINVAL; - return NULL; - } else { - str = strdup(strchr(csString, '{') + 1); - *strrchr(str, '}') = 0; + strlcpy(str, csDir, MAXPATHLEN); + strlcat(str, "/*", MAXPATHLEN); + + kq = kqueue(); + if (kq == -1) { + LOGERR; + return -1; } + d = open(csDir, O_RDONLY); + if (d == -1) { + LOGERR; + close(kq); + return -1; + } - if ((ext = strchr(str, ':'))) { - *ext++ = 0; - e[0] = strtol(ext, NULL, 0); - if ((ext = strchr(ext, ':'))) - e[1] = strtol(++ext, NULL, 0); + EV_SET(&req, d, EVFILT_VNODE, EV_ADD | EV_CLEAR, NOTE_WRITE, 0, 0); - /* make cut prefix */ - if (e[0] >= 0) - ext = str + e[0]; - else - ext = str + strlen(str) + e[0]; - /* make cut suffix */ - if (e[1] > 0) - *(ext + e[1]) = 0; + if ((n = glob(str, GLOB_NOCHECK, NULL, &g[0]))) { + LOGERR; + close(d); + close(kq); + return -1; + } /*else + ioDEBUG(3, "Start files %d in %s\n", g[0].gl_matchc, str);*/ + + while (kevent(kq, &req, 1, &chg, 1, NULL) > 0) { + /*ioDEBUG(1, "Event:: req=0x%x -> chg=0x%x data=%x\n", req.fflags, chg.fflags, chg.data);*/ + + if (!glob(str, GLOB_NOCHECK, NULL, &g[1])) { + /*ioDEBUG(3, "Diffs %d <> %d\n", g[0].gl_matchc, g[1].gl_matchc);*/ + + if (g[0].gl_matchc != g[1].gl_matchc) { + /* find new items */ + for (j = 0; j < g[1].gl_matchc; j++) { + for (i = 0; i < g[0].gl_matchc; i++) + if (!strcmp(g[0].gl_pathv[i], g[1].gl_pathv[j])) + break; + if (i == g[0].gl_matchc) { + if (callback(g[1].gl_pathv[j], 1) < 0) + break; + else + n++; + } + } + /* find del items */ + for (j = 0; j < g[0].gl_matchc; j++) { + for (i = 0; i < g[1].gl_matchc; i++) + if (!strcmp(g[1].gl_pathv[i], g[0].gl_pathv[j])) + break; + if (i == g[1].gl_matchc) { + if (callback(g[0].gl_pathv[j], -1) < 0) + break; + else + n++; + } + } + } else { + /* find chg from items */ + for (j = 0; j < g[0].gl_matchc; j++) { + for (i = 0; i < g[1].gl_matchc; i++) + if (!strcmp(g[1].gl_pathv[i], g[0].gl_pathv[j])) + break; + if (i == g[1].gl_matchc) { + strlcpy(wrk, g[0].gl_pathv[j], sizeof wrk); + strlcat(wrk, ":", sizeof wrk); + } + } + /* find chg to items */ + for (j = 0; j < g[1].gl_matchc; j++) { + for (i = 0; i < g[0].gl_matchc; i++) + if (!strcmp(g[0].gl_pathv[i], g[1].gl_pathv[j])) + break; + if (i == g[0].gl_matchc) { + strlcat(wrk, g[1].gl_pathv[j], sizeof wrk); + if (callback(wrk, 0) < 0) + break; + else + n++; + } + } + } + + globfree(&g[0]); + g[0] = g[1]; + } + } + + globfree(&g[0]); + close(d); + close(kq); + return n; +} + +/* + * ioCreatePIDFile() Create PID file + * @csName = PID filename + * @ifExists = !=0 if filename exists return error + * return: -1 error or 0 ok + */ +inline int +ioCreatePIDFile(const char *csName, int ifExists) +{ + int fd; + char str[STRSIZ] = { 0 }; + + if (!csName) + return -1; + + fd = open(csName, O_WRONLY | O_CREAT | (ifExists ? O_EXCL : 0), 0644); + if (fd == -1) { + LOGERR; + return -1; + } + snprintf(str, sizeof str, "%d", getpid()); + write(fd, str, strlen(str)); + close(fd); + return 0; +} + + +/* + * ioSendFile() AITNET sendfile() userland implementation, not dependant from OS + * @s = socket + * @csFile = file for send + * @sendLen = bytes to send, if 0 send all data + * @offset = start file offset + * @sndbuf = SO_SNDBUF value, if 0 use default + * return: 0 error, >0 ok, sended bytes + */ +size_t +ioSendFile(int s, const char *csFile, size_t sendLen, off_t offset, int sndbuf) +{ + void *addr; + int fd; + size_t len = 0; + register size_t off = 0; + + if (!csFile) + return 0; + + if (sndbuf) + if (setsockopt(s, SOL_SOCKET, SO_SNDBUF, &sndbuf, sizeof sndbuf) == -1) { + LOGERR; + return 0; + } + + fd = open(csFile, O_RDONLY); + if (fd == -1) { + LOGERR; + return 0; + } + if (!sendLen) { + sendLen = lseek(fd, 0, SEEK_END); + if (sendLen == -1) { + LOGERR; + close(fd); + return 0; + } + } + addr = mmap(NULL, sendLen, PROT_READ, MAP_SHARED, fd, offset); + if (addr == MAP_FAILED) { + LOGERR; + close(fd); + return 0; } else - /* ok, clear show */ - ext = str; + close(fd); - out = strdup(ext); - free(str); + while (off < sendLen && (len = write(s, addr + off, sendLen - off)) != -1) + off += len; + if (len == -1) { + LOGERR; + munmap(addr, sendLen); + return 0; + } else + len = off; - return out; + if (len != sendLen) { + io_SetErr(ECANCELED, "Different sizes - request %u bytes, actually sended %u bytes\n", + sendLen, len); + len ^= len; + } + + munmap(addr, sendLen); + return len; +} + +/* + * ioRecvFile() Receive file from socket, fastest (zero-copy) way + * @s = socket + * @csFile = file for receive + * @recvLen = receive bytes + * @over = overwrite file if exists with mode like 0644 + * @rcvbuf = SO_RCVBUF value, if 0 use default + * return: 0 error, >0 ok, received bytes + */ +size_t +ioRecvFile(int s, const char *csFile, size_t recvLen, int over, int rcvbuf) +{ + void *addr; + int fd; + size_t len = 0; + register size_t off = 0; + struct pollfd pfd = { s, POLLIN | POLLPRI, 0 }; + + if (!csFile || !recvLen) + return 0; + if (!over && !access(csFile, F_OK)) + return 0; + + if (rcvbuf) + if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof rcvbuf) == -1) { + LOGERR; + return 0; + } + + fd = open(csFile, O_WRONLY | O_CREAT | O_TRUNC, over); + if (fd == -1) { + LOGERR; + unlink(csFile); + return 0; + } + if (lseek(fd, recvLen - 1, SEEK_SET) == -1) { + LOGERR; + close(fd); + unlink(csFile); + return 0; + } + if (write(fd, "", 1) == -1) { + LOGERR; + close(fd); + unlink(csFile); + return 0; + } + addr = mmap(NULL, recvLen, PROT_WRITE, MAP_SHARED, fd, 0); + if (addr == MAP_FAILED) { + LOGERR; + close(fd); + unlink(csFile); + return 0; + } else + close(fd); + + while (off < recvLen && poll(&pfd, 1, RECV_TIMEOUT) != -1) + while (off < recvLen && (len = read(s, addr + off, recvLen - off)) != -1) + off += len; + if (len == -1) { + LOGERR; + munmap(addr, recvLen); + unlink(csFile); + return 0; + } else + len = off; + + if (len != recvLen) + io_SetErr(EAGAIN, "Different sizes - request %u bytes, actually received %u bytes\n", + recvLen, len); + + munmap(addr, recvLen); + return len; }