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ttutil.c
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ttutil.c
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/*************************************************************************************************
* The utility API of Tokyo Tyrant
* Copyright (C) 2006-2010 FAL Labs
* This file is part of Tokyo Tyrant.
* Tokyo Tyrant is free software; you can redistribute it and/or modify it under the terms of
* the GNU Lesser General Public License as published by the Free Software Foundation; either
* version 2.1 of the License or any later version. Tokyo Tyrant is distributed in the hope
* that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
* You should have received a copy of the GNU Lesser General Public License along with Tokyo
* Tyrant; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA.
*************************************************************************************************/
#include "ttutil.h"
#include "myconf.h"
/*************************************************************************************************
* basic utilities
*************************************************************************************************/
#define SOCKPATHBUFSIZ 108 // size of a socket path buffer
#define SOCKRCVTIMEO 0.25 // timeout of the recv call of socket
#define SOCKSNDTIMEO 0.25 // timeout of the send call of socket
#define SOCKCNCTTIMEO 5.0 // timeout of the connect call of socket
#define SOCKLINEBUFSIZ 4096 // size of a line buffer of socket
#define SOCKLINEMAXSIZ (16*1024*1024) // maximum size of a line of socket
#define HTTPBODYMAXSIZ (256*1024*1024) // maximum size of the entity body of HTTP
#define TRILLIONNUM 1000000000000 // trillion number
/* String containing the version information. */
const char *ttversion = _TT_VERSION;
/* Get the primary name of the local host. */
bool ttgetlocalhostname(char *name){
assert(name);
if(gethostname(name, TTADDRBUFSIZ - 1) != 0){
sprintf(name, "localhost");
return false;
}
return true;
}
/* Get the address of a host. */
bool ttgethostaddr(const char *name, char *addr){
assert(name && addr);
struct addrinfo hints, *result;
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = 0;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_canonname = NULL;
hints.ai_addr = NULL;
hints.ai_next = NULL;
if(getaddrinfo(name, NULL, &hints, &result) != 0){
*addr = '\0';
return false;
}
if(!result){
freeaddrinfo(result);
return false;
}
if(result->ai_addr->sa_family != AF_INET){
freeaddrinfo(result);
return false;
}
if(getnameinfo(result->ai_addr, result->ai_addrlen,
addr, TTADDRBUFSIZ, NULL, 0, NI_NUMERICHOST) != 0){
freeaddrinfo(result);
return false;
}
freeaddrinfo(result);
return true;
}
/* Open a client socket of TCP/IP stream to a server. */
int ttopensock(const char *addr, int port){
assert(addr && port >= 0);
struct sockaddr_in sain;
memset(&sain, 0, sizeof(sain));
sain.sin_family = AF_INET;
if(inet_aton(addr, &sain.sin_addr) == 0) return -1;
uint16_t snum = port;
sain.sin_port = htons(snum);
int fd = socket(PF_INET, SOCK_STREAM, 0);
if(fd == -1) return -1;
int optint = 1;
setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (char *)&optint, sizeof(optint));
struct timeval opttv;
opttv.tv_sec = (int)SOCKRCVTIMEO;
opttv.tv_usec = (SOCKRCVTIMEO - (int)SOCKRCVTIMEO) * 1000000;
setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (char *)&opttv, sizeof(opttv));
opttv.tv_sec = (int)SOCKSNDTIMEO;
opttv.tv_usec = (SOCKSNDTIMEO - (int)SOCKSNDTIMEO) * 1000000;
setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, (char *)&opttv, sizeof(opttv));
optint = 1;
setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&optint, sizeof(optint));
double dl = tctime() + SOCKCNCTTIMEO;
do {
int ocs = PTHREAD_CANCEL_DISABLE;
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &ocs);
int rv = connect(fd, (struct sockaddr *)&sain, sizeof(sain));
int en = errno;
pthread_setcancelstate(ocs, NULL);
if(rv == 0) return fd;
if(en != EINTR && en != EAGAIN && en != EINPROGRESS && en != EALREADY && en != ETIMEDOUT)
break;
} while(tctime() <= dl);
close(fd);
return -1;
}
/* Open a client socket of UNIX domain stream to a server. */
int ttopensockunix(const char *path){
assert(path);
struct sockaddr_un saun;
memset(&saun, 0, sizeof(saun));
saun.sun_family = AF_UNIX;
snprintf(saun.sun_path, SOCKPATHBUFSIZ, "%s", path);
int fd = socket(PF_UNIX, SOCK_STREAM, 0);
if(fd == -1) return -1;
int optint = 1;
setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (char *)&optint, sizeof(optint));
struct timeval opttv;
opttv.tv_sec = (int)SOCKRCVTIMEO;
opttv.tv_usec = (SOCKRCVTIMEO - (int)SOCKRCVTIMEO) * 1000000;
setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (char *)&opttv, sizeof(opttv));
opttv.tv_sec = (int)SOCKSNDTIMEO;
opttv.tv_usec = (SOCKSNDTIMEO - (int)SOCKSNDTIMEO) * 1000000;
setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, (char *)&opttv, sizeof(opttv));
double dl = tctime() + SOCKCNCTTIMEO;
do {
int ocs = PTHREAD_CANCEL_DISABLE;
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &ocs);
int rv = connect(fd, (struct sockaddr *)&saun, sizeof(saun));
int en = errno;
pthread_setcancelstate(ocs, NULL);
if(rv == 0) return fd;
if(en != EINTR && en != EAGAIN && en != EINPROGRESS && en != EALREADY && en != ETIMEDOUT)
break;
} while(tctime() <= dl);
close(fd);
return -1;
}
/* Open a server socket of TCP/IP stream to clients. */
int ttopenservsock(const char *addr, int port){
assert(port >= 0);
struct sockaddr_in sain;
memset(&sain, 0, sizeof(sain));
sain.sin_family = AF_INET;
if(inet_aton(addr ? addr : "0.0.0.0", &sain.sin_addr) == 0) return -1;
uint16_t snum = port;
sain.sin_port = htons(snum);
int fd = socket(PF_INET, SOCK_STREAM, 0);
if(fd == -1) return -1;
int optint = 1;
if(setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&optint, sizeof(optint)) != 0){
close(fd);
return -1;
}
if(bind(fd, (struct sockaddr *)&sain, sizeof(sain)) != 0 ||
listen(fd, SOMAXCONN) != 0){
close(fd);
return -1;
}
return fd;
}
/* Open a server socket of UNIX domain stream to clients. */
int ttopenservsockunix(const char *path){
assert(path);
if(*path == '\0') return -1;
struct sockaddr_un saun;
memset(&saun, 0, sizeof(saun));
saun.sun_family = AF_UNIX;
snprintf(saun.sun_path, SOCKPATHBUFSIZ, "%s", path);
int fd = socket(PF_UNIX, SOCK_STREAM, 0);
if(fd == -1) return -1;
if(bind(fd, (struct sockaddr *)&saun, sizeof(saun)) != 0 ||
listen(fd, SOMAXCONN) != 0){
close(fd);
return -1;
}
return fd;
}
/* Accept a TCP/IP connection from a client. */
int ttacceptsock(int fd, char *addr, int *pp){
assert(fd >= 0);
do {
struct sockaddr_in sain;
memset(&sain, 0, sizeof(sain));
sain.sin_family = AF_INET;
socklen_t slen = sizeof(sain);
int cfd = accept(fd, (struct sockaddr *)&sain, &slen);
if(cfd >= 0){
int optint = 1;
setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (char *)&optint, sizeof(optint));
struct timeval opttv;
opttv.tv_sec = (int)SOCKRCVTIMEO;
opttv.tv_usec = (SOCKRCVTIMEO - (int)SOCKRCVTIMEO) * 1000000;
setsockopt(cfd, SOL_SOCKET, SO_RCVTIMEO, (char *)&opttv, sizeof(opttv));
opttv.tv_sec = (int)SOCKSNDTIMEO;
opttv.tv_usec = (SOCKSNDTIMEO - (int)SOCKSNDTIMEO) * 1000000;
setsockopt(cfd, SOL_SOCKET, SO_SNDTIMEO, (char *)&opttv, sizeof(opttv));
optint = 1;
setsockopt(cfd, IPPROTO_TCP, TCP_NODELAY, (char *)&optint, sizeof(optint));
if(addr){
if(getnameinfo((struct sockaddr *)&sain, sizeof(sain), addr, TTADDRBUFSIZ,
NULL, 0, NI_NUMERICHOST) != 0) sprintf(addr, "0.0.0.0");
}
if(pp) *pp = (int)ntohs(sain.sin_port);
return cfd;
}
} while(errno == EINTR || errno == EAGAIN);
return -1;
}
/* Accept a UNIX domain connection from a client. */
int ttacceptsockunix(int fd){
assert(fd >= 0);
do {
int cfd = accept(fd, NULL, NULL);
if(cfd >= 0){
int optint = 1;
setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (char *)&optint, sizeof(optint));
struct timeval opttv;
opttv.tv_sec = (int)SOCKRCVTIMEO;
opttv.tv_usec = (SOCKRCVTIMEO - (int)SOCKRCVTIMEO) * 1000000;
setsockopt(cfd, SOL_SOCKET, SO_RCVTIMEO, (char *)&opttv, sizeof(opttv));
opttv.tv_sec = (int)SOCKSNDTIMEO;
opttv.tv_usec = (SOCKSNDTIMEO - (int)SOCKSNDTIMEO) * 1000000;
setsockopt(cfd, SOL_SOCKET, SO_SNDTIMEO, (char *)&opttv, sizeof(opttv));
return cfd;
}
} while(errno == EINTR || errno == EAGAIN);
return -1;
}
/* Shutdown and close a socket. */
bool ttclosesock(int fd){
assert(fd >= 0);
bool err = false;
if(shutdown(fd, 2) != 0 && errno != ENOTCONN && errno != ECONNRESET) err = true;
if(close(fd) != 0 && errno != ENOTCONN && errno != ECONNRESET) err = true;
return !err;
}
/* Wait an I/O event of a socket. */
bool ttwaitsock(int fd, int mode, double timeout){
assert(fd >= 0 && mode >= 0 && timeout >= 0);
while(true){
fd_set set;
FD_ZERO(&set);
FD_SET(fd, &set);
double integ, fract;
fract = modf(timeout, &integ);
struct timespec ts;
ts.tv_sec = integ;
ts.tv_nsec = fract * 1000000000.0;
int rv = -1;
switch(mode){
case 0:
rv = pselect(fd + 1, &set, NULL, NULL, &ts, NULL);
break;
case 1:
rv = pselect(fd + 1, NULL, &set, NULL, &ts, NULL);
break;
case 2:
rv = pselect(fd + 1, NULL, NULL, &set, &ts, NULL);
break;
}
if(rv > 0) return true;
if(rv == 0 || errno != EINVAL) break;
}
return false;
}
/* Create a socket object. */
TTSOCK *ttsocknew(int fd){
assert(fd >= 0);
TTSOCK *sock = tcmalloc(sizeof(*sock));
sock->fd = fd;
sock->rp = sock->buf;
sock->ep = sock->buf;
sock->end = false;
sock->to = 0.0;
sock->dl = HUGE_VAL;
return sock;
}
/* Delete a socket object. */
void ttsockdel(TTSOCK *sock){
assert(sock);
tcfree(sock);
}
/* Set the lifetime of a socket object. */
void ttsocksetlife(TTSOCK *sock, double lifetime){
assert(sock && lifetime >= 0);
sock->to = lifetime >= INT_MAX ? 0.0 : lifetime;
sock->dl = tctime() + lifetime;
}
/* Send data by a socket. */
bool ttsocksend(TTSOCK *sock, const void *buf, int size){
assert(sock && buf && size >= 0);
const char *rp = buf;
do {
int ocs = PTHREAD_CANCEL_DISABLE;
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &ocs);
if(sock->to > 0.0 && !ttwaitsock(sock->fd, 1, sock->to)){
pthread_setcancelstate(ocs, NULL);
return false;
}
int wb = send(sock->fd, rp, size, 0);
int en = errno;
pthread_setcancelstate(ocs, NULL);
switch(wb){
case -1:
if(en != EINTR && en != EAGAIN && en != EWOULDBLOCK){
sock->end = true;
return false;
}
if(tctime() > sock->dl){
sock->end = true;
return false;
}
break;
case 0:
break;
default:
rp += wb;
size -= wb;
break;
}
} while(size > 0);
return true;
}
/* Send formatted data by a socket. */
bool ttsockprintf(TTSOCK *sock, const char *format, ...){
assert(sock && format);
bool err = false;
TCXSTR *xstr = tcxstrnew();
pthread_cleanup_push((void (*)(void *))tcxstrdel, xstr);
va_list ap;
va_start(ap, format);
while(*format != '\0'){
if(*format == '%'){
char cbuf[TTNUMBUFSIZ];
cbuf[0] = '%';
int cblen = 1;
int lnum = 0;
format++;
while(strchr("0123456789 .+-hlLz", *format) && *format != '\0' &&
cblen < TTNUMBUFSIZ - 1){
if(*format == 'l' || *format == 'L') lnum++;
cbuf[cblen++] = *(format++);
}
cbuf[cblen++] = *format;
cbuf[cblen] = '\0';
int tlen;
char *tmp, tbuf[TTNUMBUFSIZ*2];
switch(*format){
case 's':
tmp = va_arg(ap, char *);
if(!tmp) tmp = "(null)";
tcxstrcat2(xstr, tmp);
break;
case 'd':
if(lnum >= 2){
tlen = sprintf(tbuf, cbuf, va_arg(ap, long long));
} else if(lnum >= 1){
tlen = sprintf(tbuf, cbuf, va_arg(ap, long));
} else {
tlen = sprintf(tbuf, cbuf, va_arg(ap, int));
}
tcxstrcat(xstr, tbuf, tlen);
break;
case 'o': case 'u': case 'x': case 'X': case 'c':
if(lnum >= 2){
tlen = sprintf(tbuf, cbuf, va_arg(ap, unsigned long long));
} else if(lnum >= 1){
tlen = sprintf(tbuf, cbuf, va_arg(ap, unsigned long));
} else {
tlen = sprintf(tbuf, cbuf, va_arg(ap, unsigned int));
}
tcxstrcat(xstr, tbuf, tlen);
break;
case 'e': case 'E': case 'f': case 'g': case 'G':
if(lnum >= 1){
tlen = sprintf(tbuf, cbuf, va_arg(ap, long double));
} else {
tlen = sprintf(tbuf, cbuf, va_arg(ap, double));
}
tcxstrcat(xstr, tbuf, tlen);
break;
case '@':
tmp = va_arg(ap, char *);
if(!tmp) tmp = "(null)";
while(*tmp){
switch(*tmp){
case '&': tcxstrcat(xstr, "&", 5); break;
case '<': tcxstrcat(xstr, "<", 4); break;
case '>': tcxstrcat(xstr, ">", 4); break;
case '"': tcxstrcat(xstr, """, 6); break;
default:
if(!((*tmp >= 0 && *tmp <= 0x8) || (*tmp >= 0x0e && *tmp <= 0x1f)))
tcxstrcat(xstr, tmp, 1);
break;
}
tmp++;
}
break;
case '?':
tmp = va_arg(ap, char *);
if(!tmp) tmp = "(null)";
while(*tmp){
unsigned char c = *(unsigned char *)tmp;
if((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') ||
(c >= '0' && c <= '9') || (c != '\0' && strchr("_-.", c))){
tcxstrcat(xstr, tmp, 1);
} else {
tlen = sprintf(tbuf, "%%%02X", c);
tcxstrcat(xstr, tbuf, tlen);
}
tmp++;
}
break;
case '%':
tcxstrcat(xstr, "%", 1);
break;
}
} else {
tcxstrcat(xstr, format, 1);
}
format++;
}
va_end(ap);
if(!ttsocksend(sock, tcxstrptr(xstr), tcxstrsize(xstr))) err = true;
pthread_cleanup_pop(1);
return !err;
}
/* Receive data by a socket. */
bool ttsockrecv(TTSOCK *sock, char *buf, int size){
assert(sock && buf && size >= 0);
if(sock->rp + size <= sock->ep){
memcpy(buf, sock->rp, size);
sock->rp += size;
return true;
}
bool err = false;
char *wp = buf;
while(size > 0){
int c = ttsockgetc(sock);
if(c == -1){
err = true;
break;
}
*(wp++) = c;
size--;
}
return !err;
}
/* Receive one byte by a socket. */
int ttsockgetc(TTSOCK *sock){
assert(sock);
if(sock->rp < sock->ep) return *(unsigned char *)(sock->rp++);
int en;
do {
int ocs = PTHREAD_CANCEL_DISABLE;
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &ocs);
if(sock->to > 0.0 && !ttwaitsock(sock->fd, 0, sock->to)){
pthread_setcancelstate(ocs, NULL);
return -1;
}
int rv = recv(sock->fd, sock->buf, TTIOBUFSIZ, 0);
en = errno;
pthread_setcancelstate(ocs, NULL);
if(rv > 0){
sock->rp = sock->buf + 1;
sock->ep = sock->buf + rv;
return *(unsigned char *)sock->buf;
} else if(rv == 0){
sock->end = true;
return -1;
}
} while((en == EINTR || en == EAGAIN || en == EWOULDBLOCK) && tctime() <= sock->dl);
sock->end = true;
return -1;
}
/* Push a character back to a socket. */
void ttsockungetc(TTSOCK *sock, int c){
assert(sock);
if(sock->rp <= sock->buf) return;
sock->rp--;
*(unsigned char *)sock->rp = c;
}
/* Receive one line by a socket. */
bool ttsockgets(TTSOCK *sock, char *buf, int size){
assert(sock && buf && size > 0);
bool err = false;
size--;
char *wp = buf;
while(size > 0){
int c = ttsockgetc(sock);
if(c == '\n') break;
if(c == -1){
err = true;
break;
}
if(c != '\r'){
*(wp++) = c;
size--;
}
}
*wp = '\0';
return !err;
}
/* Receive one line by a socket into allocated buffer. */
char *ttsockgets2(TTSOCK *sock){
assert(sock);
bool err = false;
TCXSTR *xstr = tcxstrnew3(SOCKLINEBUFSIZ);
pthread_cleanup_push((void (*)(void *))tcxstrdel, xstr);
int size = 0;
while(true){
int c = ttsockgetc(sock);
if(c == '\n') break;
if(c == -1){
err = true;
break;
}
if(c != '\r'){
unsigned char b = c;
tcxstrcat(xstr, &b, sizeof(b));
size++;
if(size >= SOCKLINEMAXSIZ){
err = true;
break;
}
}
}
pthread_cleanup_pop(0);
return tcxstrtomalloc(xstr);
}
/* Receive an 32-bit integer by a socket. */
uint32_t ttsockgetint32(TTSOCK *sock){
assert(sock);
uint32_t num;
ttsockrecv(sock, (char *)&num, sizeof(num));
return TTNTOHL(num);
}
/* Receive an 64-bit integer by a socket. */
uint64_t ttsockgetint64(TTSOCK *sock){
assert(sock);
uint64_t num;
ttsockrecv(sock, (char *)&num, sizeof(num));
return TTNTOHLL(num);
}
/* Check whehter a socket is end. */
bool ttsockcheckend(TTSOCK *sock){
assert(sock);
return sock->end;
}
/* Check the size of prefetched data in a socket. */
int ttsockcheckpfsiz(TTSOCK *sock){
assert(sock);
if(sock->end) return 0;
return sock->ep - sock->rp;
}
/* Fetch the resource of a URL by HTTP. */
int tthttpfetch(const char *url, TCMAP *reqheads, TCMAP *resheads, TCXSTR *resbody){
assert(url);
int code = -1;
TCMAP *elems = tcurlbreak(url);
pthread_cleanup_push((void (*)(void *))tcmapdel, elems);
const char *scheme = tcmapget2(elems, "scheme");
const char *host = tcmapget2(elems, "host");
const char *port = tcmapget2(elems, "port");
const char *authority = tcmapget2(elems, "authority");
const char *path = tcmapget2(elems, "path");
const char *query = tcmapget2(elems, "query");
if(scheme && !tcstricmp(scheme, "http") && host){
if(*host == '\0') host = "127.0.0.1";
int pnum = port ? tcatoi(port) : 80;
if(pnum < 1) pnum = 80;
if(!path) path = "/";
char addr[TTADDRBUFSIZ];
int fd;
if(ttgethostaddr(host, addr) && (fd = ttopensock(addr, pnum)) != -1){
pthread_cleanup_push((void (*)(void *))ttclosesock, (void *)(intptr_t)fd);
TTSOCK *sock = ttsocknew(fd);
pthread_cleanup_push((void (*)(void *))ttsockdel, sock);
TCXSTR *obuf = tcxstrnew();
pthread_cleanup_push((void (*)(void *))tcxstrdel, obuf);
if(query){
tcxstrprintf(obuf, "GET %s?%s HTTP/1.1\r\n", path, query);
} else {
tcxstrprintf(obuf, "GET %s HTTP/1.1\r\n", path);
}
if(pnum == 80){
tcxstrprintf(obuf, "Host: %s\r\n", host);
} else {
tcxstrprintf(obuf, "Host: %s:%d\r\n", host, pnum);
}
tcxstrprintf(obuf, "Connection: close\r\n", host, port);
if(authority){
char *enc = tcbaseencode(authority, strlen(authority));
tcxstrprintf(obuf, "Authorization: Basic %s\r\n", enc);
tcfree(enc);
}
double tout = -1;
if(reqheads){
tcmapiterinit(reqheads);
const char *name;
while((name = tcmapiternext2(reqheads)) != NULL){
if(strchr(name, ':') || !tcstricmp(name, "connection")) continue;
if(!tcstricmp(name, "x-tt-timeout")){
tout = tcatof(tcmapget2(reqheads, name));
} else {
char *cap = tcstrdup(name);
tcstrtolower(cap);
char *wp = cap;
bool head = true;
while(*wp != '\0'){
if(head && *wp >= 'a' && *wp <= 'z') *wp -= 'a' - 'A';
head = *wp == '-' || *wp == ' ';
wp++;
}
tcxstrprintf(obuf, "%s: %s\r\n", cap, tcmapget2(reqheads, name));
tcfree(cap);
}
}
}
tcxstrprintf(obuf, "\r\n", host);
if(tout > 0) ttsocksetlife(sock, tout);
if(ttsocksend(sock, tcxstrptr(obuf), tcxstrsize(obuf))){
char line[SOCKLINEBUFSIZ];
if(ttsockgets(sock, line, SOCKLINEBUFSIZ) && tcstrfwm(line, "HTTP/")){
tcstrsqzspc(line);
const char *rp = strchr(line, ' ');
code = tcatoi(rp + 1);
if(resheads) tcmapput2(resheads, "STATUS", line);
}
if(code > 0){
int clen = 0;
bool chunked = false;
while(ttsockgets(sock, line, SOCKLINEBUFSIZ) && *line != '\0'){
tcstrsqzspc(line);
char *pv = strchr(line, ':');
if(!pv) continue;
*(pv++) = '\0';
while(*pv == ' '){
pv++;
}
tcstrtolower(line);
if(!strcmp(line, "content-length")){
clen = tcatoi(pv);
} else if(!strcmp(line, "transfer-encoding")){
if(!tcstricmp(pv, "chunked")) chunked = true;
}
if(resheads) tcmapput2(resheads, line, pv);
}
if(!ttsockcheckend(sock) && resbody){
bool err = false;
char *body;
int bsiz;
if(code == 304){
body = tcmemdup("", 0);
bsiz = 0;
} else if(chunked){
int asiz = SOCKLINEBUFSIZ;
body = tcmalloc(asiz);
bsiz = 0;
while(true){
pthread_cleanup_push(free, body);
if(!ttsockgets(sock, line, SOCKLINEBUFSIZ)) err = true;
pthread_cleanup_pop(0);
if(err || *line == '\0') break;
int size = tcatoih(line);
if(bsiz + size > HTTPBODYMAXSIZ){
err = true;
break;
}
if(bsiz + size > asiz){
asiz = bsiz * 2 + size;
body = tcrealloc(body, asiz);
}
pthread_cleanup_push(free, body);
if(size > 0) ttsockrecv(sock, body + bsiz, size);
if(ttsockgetc(sock) != '\r' || ttsockgetc(sock) != '\n') err = true;
pthread_cleanup_pop(0);
if(err || size < 1) break;
bsiz += size;
}
} else if(clen > 0){
if(clen > HTTPBODYMAXSIZ){
body = tcmemdup("", 0);
bsiz = 0;
err = true;
} else {
body = tcmalloc(clen);
bsiz = 0;
pthread_cleanup_push(free, body);
if(ttsockrecv(sock, body, clen)){
bsiz = clen;
} else {
err = true;
}
pthread_cleanup_pop(0);
}
} else {
int asiz = SOCKLINEBUFSIZ;
body = tcmalloc(asiz);
bsiz = 0;
while(true){
int c;
pthread_cleanup_push(free, body);
c = ttsockgetc(sock);
pthread_cleanup_pop(0);
if(c == -1) break;
if(bsiz >= HTTPBODYMAXSIZ){
err = true;
break;
}
if(bsiz >= asiz){
asiz = bsiz * 2;
body = tcrealloc(body, asiz);
}
body[bsiz++] = c;
}
}
if(err){
code = -1;
} else if(resbody){
tcxstrcat(resbody, body, bsiz);
}
tcfree(body);
}
}
}
pthread_cleanup_pop(1);
pthread_cleanup_pop(1);
pthread_cleanup_pop(1);
}
}
pthread_cleanup_pop(1);
return code;
}
/* Serialize a real number. */
void ttpackdouble(double num, char *buf){
assert(buf);
double dinteg, dfract;
dfract = modf(num, &dinteg);
int64_t linteg, lfract;
if(isnormal(dinteg) || dinteg == 0){
linteg = dinteg;
lfract = dfract * TRILLIONNUM;
} else if(isinf(dinteg)){
linteg = dinteg > 0 ? INT64_MAX : INT64_MIN;
lfract = 0;
} else {
linteg = INT64_MIN;
lfract = INT64_MIN;
}
linteg = TTHTONLL(linteg);
memcpy(buf, &linteg, sizeof(linteg));
lfract = TTHTONLL(lfract);
memcpy(buf + sizeof(linteg), &lfract, sizeof(lfract));
}
/* Redintegrate a serialized real number. */
double ttunpackdouble(const char *buf){
assert(buf);
int64_t linteg, lfract;
memcpy(&linteg, buf, sizeof(linteg));
linteg = TTNTOHLL(linteg);
memcpy(&lfract, buf + sizeof(linteg), sizeof(lfract));
lfract = TTNTOHLL(lfract);
if(lfract == INT64_MIN && linteg == INT64_MIN){
return NAN;
} else if(linteg == INT64_MAX){
return INFINITY;
} else if(linteg == INT64_MIN){
return -INFINITY;
}
return linteg + (double)lfract / TRILLIONNUM;
}
/*************************************************************************************************
* server utilities
*************************************************************************************************/
#define TTADDRBUFSIZ 1024 // size of an address buffer
#define TTDEFTHNUM 5 // default number of threads
#define TTEVENTMAX 256 // maximum number of events
#define TTWAITREQUEST 0.2 // waiting seconds for requests
#define TTWAITWORKER 0.1 // waiting seconds for finish of workers
/* private function prototypes */
static void *ttservtimer(void *argp);
static void ttservtask(TTSOCK *sock, TTREQ *req);
static void *ttservdeqtasks(void *argp);
/* Create a server object. */
TTSERV *ttservnew(void){
TTSERV *serv = tcmalloc(sizeof(*serv));
serv->host[0] = '\0';
serv->addr[0] = '\0';
serv->port = 0;
serv->queue = tclistnew();
if(pthread_mutex_init(&serv->qmtx, NULL) != 0) tcmyfatal("pthread_mutex_init failed");
if(pthread_cond_init(&serv->qcnd, NULL) != 0) tcmyfatal("pthread_cond_init failed");
if(pthread_mutex_init(&serv->tmtx, NULL) != 0) tcmyfatal("pthread_mutex_init failed");
if(pthread_cond_init(&serv->tcnd, NULL) != 0) tcmyfatal("pthread_cond_init failed");
serv->thnum = TTDEFTHNUM;
serv->timeout = 0;
serv->term = false;
serv->do_log = NULL;
serv->opq_log = NULL;
serv->timernum = 0;
serv->do_task = NULL;
serv->opq_task = NULL;
serv->do_term = NULL;
serv->opq_term = NULL;
return serv;
}
/* Delete a server object. */
void ttservdel(TTSERV *serv){
assert(serv);
pthread_cond_destroy(&serv->tcnd);
pthread_mutex_destroy(&serv->tmtx);
pthread_cond_destroy(&serv->qcnd);
pthread_mutex_destroy(&serv->qmtx);
tclistdel(serv->queue);
tcfree(serv);
}
/* Configure a server object. */
bool ttservconf(TTSERV *serv, const char *host, int port){
assert(serv);
bool err = false;
if(port < 1){
if(!host || host[0] == '\0'){
err = true;
serv->addr[0] = '\0';
ttservlog(serv, TTLOGERROR, "invalid socket path");
}
} else {
if(host && !ttgethostaddr(host, serv->addr)){
err = true;
serv->addr[0] = '\0';
ttservlog(serv, TTLOGERROR, "ttgethostaddr failed");
}
}
snprintf(serv->host, sizeof(serv->host), "%s", host ? host : "");
serv->port = port;
return !err;
}
/* Set tuning parameters of a server object. */
void ttservtune(TTSERV *serv, int thnum, double timeout){
assert(serv && thnum > 0);
serv->thnum = thnum;
serv->timeout = timeout;
}
/* Set the logging handler of a server object. */
void ttservsetloghandler(TTSERV *serv, void (*do_log)(int, const char *, void *), void *opq){
assert(serv && do_log);
serv->do_log = do_log;
serv->opq_log = opq;
}
/* Add a timed handler to a server object. */
void ttservaddtimedhandler(TTSERV *serv, double freq, void (*do_timed)(void *), void *opq){
assert(serv && freq >= 0.0 && do_timed);
if(serv->timernum >= TTTIMERMAX - 1) return;
TTTIMER *timer = serv->timers + serv->timernum;
timer->freq_timed = freq;
timer->do_timed = do_timed;
timer->opq_timed = opq;
serv->timernum++;
}
/* Set the response handler of a server object. */
void ttservsettaskhandler(TTSERV *serv, void (*do_task)(TTSOCK *, void *, TTREQ *), void *opq){
assert(serv && do_task);
serv->do_task = do_task;
serv->opq_task = opq;
}
/* Set the termination handler of a server object. */
void ttservsettermhandler(TTSERV *serv, void (*do_term)(void *), void *opq){
assert(serv && do_term);
serv->do_term = do_term;
serv->opq_term = opq;
}
/* Start the service of a server object. */
bool ttservstart(TTSERV *serv){
assert(serv);
int lfd;
if(serv->port < 1){
lfd = ttopenservsockunix(serv->host);
if(lfd == -1){
ttservlog(serv, TTLOGERROR, "ttopenservsockunix failed");
return false;
}
} else {
lfd = ttopenservsock(serv->addr[0] != '\0' ? serv->addr : NULL, serv->port);
if(lfd == -1){
ttservlog(serv, TTLOGERROR, "ttopenservsock failed");
return false;
}
}
int epfd = epoll_create(TTEVENTMAX);
if(epfd == -1){
close(lfd);
ttservlog(serv, TTLOGERROR, "epoll_create failed");
return false;
}
ttservlog(serv, TTLOGSYSTEM, "service started: %d", getpid());
bool err = false;
for(int i = 0; i < serv->timernum; i++){
TTTIMER *timer = serv->timers + i;
timer->alive = false;
timer->serv = serv;
if(pthread_create(&(timer->thid), NULL, ttservtimer, timer) == 0){
ttservlog(serv, TTLOGINFO, "timer thread %d started", i + 1);
timer->alive = true;
} else {
ttservlog(serv, TTLOGERROR, "pthread_create (ttservtimer) failed");
err = true;
}
}
int thnum = serv->thnum;
TTREQ reqs[thnum];