int
main(int argc, char *argv[])
{
int n, fd;
char buf[BUFFSIZE], line[MAXLINE];
/* read filename to cat from stdin */
while (fgets(line, MAXLINE, stdin) != NULL) {
if (line[strlen(line) - 1] == '\n')
line[strlen(line) - 1] = 0; /* replace newline with null */
/* open the file */
if ((fd = csopen(line, O_RDONLY)) < 0)
continue; /* csopen() prints error from server */
/* and cat to stdout */
while ((n = read(fd, buf, BUFFSIZE)) > 0)
if (write(STDOUT_FILENO, buf, n) != n)
{
printf("write error\n");
exit(-1);
// err_sys("write error");
}
if (n < 0)
{
printf("read error\n");
exit(-1);
// err_sys("read error");
}
close(fd);
}
exit(0);
}
int main(int argc, char *argv[])
{
int n, fd;
char buf[BUFFSIZE], line[MAXLINE];
//read file to cat from stdin
while (NULL != fgets(line, MAXLINE, stdin))
{
if ('\n' == line[strlen(line)-1])
{
line[strlen(line)-1] = '\0';
}
if (0 > (fd = csopen(line, O_RDONLY)))
{
fprintf(stderr, "csopen failed\n");
continue;
}
//cat file to std out
while (0 < (n = read(fd, buf, BUFFSIZE)))
{
if (n != write(STDOUT_FILENO, buf, n))
{
perror("write");
return EXIT_FAILURE;
}
close(fd);
}
}
return EXIT_SUCCESS;
}
int
main(int argc, char *argv[])
{
int n, fd;
char buf[BUFFSIZE], line[MAXLINE];
/* read filename to cat from stdin 从标准输入读一个路径名*/
while (fgets(line, MAXLINE, stdin) != NULL) {
if (line[strlen(line) - 1] == '\n')
line[strlen(line) - 1] = 0; /* replace newline with null */
/* open the file 使用csopen来联系open服务器进程，从其返回一个打开描述符*/
if ((fd = csopen(line, O_RDONLY)) < 0)
continue; /* csopen() prints error from server */
/* and cat to stdout 将该文件复制到标准输出*/
while ((n = read(fd, buf, BUFFSIZE)) > 0)
if (write(STDOUT_FILENO, buf, n) != n)
err_sys("write error");
if (n < 0)
err_sys("read error");
close(fd);
}
exit(0);
}
int C2Lopen (char *name, char *mode, FILE **ifp, FILE **ofp) {
int fd;
if ((fd = csopen (name, CS_OPEN_READ)) == -1)
return -1;
fcntl (fd, F_SETFD, FD_CLOEXEC);
*ifp = fdopen (fd, "r"), *ofp = fdopen (fd, "a+");
return 0;
}
int
csping(register Cs_t* state, const char* name)
{
register int fd;
register int n;
sfsprintf(state->temp, sizeof(state->path), "/dev/tcp/%s/inet.echo", name);
if ((fd = csopen(state, state->temp, 0)) < 0) return -1;
n = (cswrite(state, fd, M, N) != N || csread(state, fd, state->temp, N, CS_LINE) != N || strncmp(M, state->temp, N)) ? -1 : 0;
close(fd);
if (n) messagef((state->id, NiL, -1, "ping: %s: no contact", name));
return n;
}
static int
reopen(register Cs_t* state, char* path)
{
int ret;
Cs_t tmp;
static int level;
if (level >= 8)
return -1;
tmp = *state;
level++;
ret = csopen(&tmp, path, CS_OPEN_TEST);
level--;
state->addr = tmp.addr;
state->port = tmp.port;
return ret;
}
static int
svc_connect(void* handle, int fd, Cs_id_t* id, int clone, char** argv)
{
register State_t* state = (State_t*)handle;
register File_t* fp;
register char* s;
int ad;
int flags = 0;
Fid_t fid;
struct stat st;
NoP(id);
NoP(clone);
if (!argv)
return(-1);
while ((s = *argv++) && *s != '/')
switch (*s)
{
case 'm':
flags |= CAT_MSG;
break;
}
if (!s || (ad = csopen(s, 0)) < 0 && (ad = open(s, O_CREAT|O_APPEND|O_WRONLY|O_BINARY, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) < 0)
return(-1);
if (fstat(ad, &st))
{
close(ad);
return(-1);
}
fid.dev = st.st_dev;
fid.ino = st.st_ino;
if (!(fp = (File_t*)hashlook(state->files, (char*)&fid, HASH_CREATE|HASH_SIZE(sizeof(File_t)), NiL)))
{
close(ad);
return(-1);
}
if (!fp->reference++) fp->fd = ad;
else close(ad);
fp->flags |= flags;
state->cat[fd] = fp;
state->active++;
state->dormant = 0;
return(0);
}
int
csclient(Cs_t* cs, int fd, const char* service, const char* prompt, char** argv, unsigned int flags)
{
register int i;
char* s;
Sfio_t* tmp;
int done;
int promptlen;
int timeout;
ssize_t n;
int sdf[2];
Cspoll_t fds[2];
char buf[8 * 1024];
if (fd < 0 && (fd = csopen(cs, service, CS_OPEN_TEST)) < 0)
{
if (errno == ENOENT)
error(3, "%s: server not running", service);
else
error(ERROR_SYSTEM|3, "%s: cannot open connect stream", service);
}
#if _hdr_termios
if (flags & CS_CLIENT_RAW)
{
tcgetattr(0, &state.old_term);
atexit(restore);
state.new_term = state.old_term;
state.new_term.c_iflag &= ~(BRKINT|IGNPAR|PARMRK|INLCR|IGNCR|ICRNL);
state.new_term.c_lflag &= ~(ECHO|ECHOK|ICANON|ISIG);
state.new_term.c_cc[VTIME] = 0;
state.new_term.c_cc[VMIN] = 1;
tcsetattr(0, TCSANOW, &state.new_term);
}
#endif
sdf[0] = fd;
sdf[1] = 1;
if (argv && *argv)
{
fds[0].fd = 1;
fds[0].events = CS_POLL_WRITE;
}
else
{
argv = 0;
fds[0].fd = 0;
fds[0].events = CS_POLL_READ;
}
fds[1].fd = fd;
fds[1].events = CS_POLL_READ;
done = 0;
if (promptlen = (!argv && prompt && isatty(fds[0].fd) && isatty(1)) ? strlen(prompt) : 0)
write(1, prompt, promptlen);
timeout = CS_NEVER;
tmp = 0;
while (cspoll(cs, fds, elementsof(fds), timeout) > 0)
for (i = 0; i < elementsof(fds); i++)
if (fds[i].status & (CS_POLL_READ|CS_POLL_WRITE))
{
if (!i && argv)
{
if (!*argv)
{
argv = 0;
fds[0].fd = 0;
if (flags & CS_CLIENT_ARGV)
{
if (done++)
return 0;
timeout = 500;
}
fds[0].events = CS_POLL_READ;
continue;
}
if (!tmp && !(tmp = sfstropen()))
error(ERROR_SYSTEM|3, "out of space");
for (;;)
{
s = *argv++;
if ((flags & CS_CLIENT_SEP) && *s == ':' && !*(s + 1))
break;
if (sfstrtell(tmp))
sfputc(tmp, ' ');
sfprintf(tmp, "%s", s);
if (!(flags & CS_CLIENT_SEP) || !*argv)
break;
}
sfputc(tmp, '\n');
n = sfstrtell(tmp);
s = sfstruse(tmp);
}
else if ((n = read(fds[i].fd, s = buf, sizeof(buf) - 1)) < 0)
error(ERROR_SYSTEM|3, "/dev/fd/%d: read error", fds[i].fd);
if (!n)
{
if (done++)
return 0;
if (!i)
write(sdf[i], "quit\n", 5);
continue;
}
if (!i)
{
#if _hdr_termios
register char* u;
register int m;
s[n] = 0;
if ((u = strchr(s, 035)))
{
if ((m = u - s) > 0 && write(sdf[i], s, m) != m)
error(ERROR_SYSTEM|3, "/dev/fd/%d: write error", sdf[i]);
tcsetattr(0, TCSANOW, &state.old_term);
if (promptlen)
write(1, prompt, promptlen);
if ((n = read(fds[i].fd, s = buf, sizeof(buf) - 1)) <= 0)
{
write(1, "\n", 1);
return 0;
}
buf[n - 1] = 0;
if (*u == 'q' || *u == 'Q')
return 0;
tcsetattr(0, TCSANOW, &state.new_term);
if (*u)
error(1, "%s: unknown command", u);
continue;
}
#endif
}
if (write(sdf[i], s, n) != n)
error(ERROR_SYSTEM|3, "/dev/fd/%d: write error", sdf[i]);
if (sdf[i] == 1 && promptlen)
write(1, prompt, promptlen);
}
return error_info.errors != 0;
}
int
_cs_open(const char* apath, int op)
{
return csopen(&cs, apath, op);
}
int
sendsmtp(Sfio_t* fp, char* host, char** argv, off_t original)
{
register char* s;
register char* t;
char* e;
int n;
int fd;
int r;
off_t z;
Sfio_t* sp;
Sfio_t* rp;
char buf[PATH_MAX];
char svc[PATH_MAX];
/*
* connect to the service
*/
sfsprintf(svc, sizeof(svc), "/dev/tcp/%s/inet.smtp", host);
if ((fd = csopen(&cs, svc, 0)) < 0)
{
note(SYSTEM, "smtp: %s: cannot connect to service", svc);
return -1;
}
if (!(sp = sfnew(NiL, NiL, SF_UNBOUND, fd, SF_WRITE)) ||
!(rp = sfnew(NiL, NiL, SF_UNBOUND, fd, SF_READ)))
{
if (sp)
sfclose(sp);
else
close(fd);
note(SYSTEM, "smtp: %s: cannot buffer service", svc);
return -1;
}
/*
* verify
*/
do
{
if (!(s = sfgetr(rp, '\n', 1)))
goto bad_recv;
if (strtol(s, &e, 10) != SMTP_READY)
goto bad_prot;
} while (*e == '-');
/*
* identify
*/
if (!(s = state.var.domain) || !*s)
s = state.var.hostname;
if (sfprintf(sp, "HELO %s\r\n", s) < 0)
goto bad_send;
do
{
if (!(s = sfgetr(rp, '\n', 1)))
goto bad_recv;
if (strtol(s, &e, 10) != SMTP_OK)
goto bad_prot;
} while (*(unsigned char*)e == SMTP_OK);
/*
* from
*/
if (original)
{
if (!(s = sfgetr(fp, '\n', 1)) || !strneq(s, "From ", 5))
goto bad_mesg;
for (s += 5; isspace(*s); s++);
for (t = s; *t && !isspace(*t); t++);
if (!(n = t - s))
goto bad_mesg;
z = sfvalue(fp);
if (sfprintf(sp, "MAIL FROM:<%*.*s>\r\n", n, n, s) < 0)
goto bad_send;
}
else
{
z = 0;
if ((state.var.domain ?
sfprintf(sp, "MAIL FROM:<%s@%s>\r\n", state.var.user, state.var.domain) :
sfprintf(sp, "MAIL FROM:<%s>\r\n", state.var.user)) < 0)
goto bad_send;
}
do
{
if (!(s = sfgetr(rp, '\n', 1)))
goto bad_recv;
if (strtol(s, &e, 10) != SMTP_OK)
goto bad_prot;
} while (*e == '-');
/*
* to
*/
while (s = *argv++)
{
if ((state.var.domain && !strchr(s, '@') ?
sfprintf(sp, "RCPT TO:<%s@%s>\r\n", s, state.var.domain) :
sfprintf(sp, "RCPT TO:<%s>\r\n", s)) < 0)
goto bad_send;
do
{
if (!(s = sfgetr(rp, '\n', 1)))
goto bad_recv;
if (strtol(s, &e, 10) != SMTP_OK)
goto bad_prot;
} while (*e == '-');
}
/*
* body
*/
if (sfprintf(sp, "DATA\r\n") < 0)
goto bad_send;
do
{
if (!(s = sfgetr(rp, '\n', 1)))
goto bad_recv;
if (strtol(s, &e, 10) != SMTP_START)
goto bad_prot;
} while (*e == '-');
tmfmt(buf, sizeof(buf), "%+uDate: %a, %d %b %Y %H:%M:%S UT", NiL);
if (sfputr(sp, buf, '\n') < 0)
goto bad_send;
if (sfprintf(sp, "From: <%s@%s>\n", state.var.user, host) < 0)
goto bad_send;
while (s = sfgetr(fp, '\n', 1))
{
if (sfprintf(sp, "%s%s\r\n", *s == '.' ? "." : "", s) < 0)
goto bad_send;
if (original && (z += sfvalue(fp)) >= original)
break;
}
if (sfprintf(sp, ".\r\n") < 0)
goto bad_send;
do
{
if (!(s = sfgetr(rp, '\n', 1)))
goto bad_recv;
if (strtol(s, &e, 10) != SMTP_OK)
goto bad_prot;
} while (*e == '-');
/*
* quit
*/
if (sfprintf(sp, "QUIT\r\n") < 0)
goto bad_send;
do
{
if (!(s = sfgetr(rp, '\n', 1)))
goto bad_recv;
if (strtol(s, &e, 10) != SMTP_CLOSE)
goto bad_prot;
} while (*e == '-');
r = 0;
goto done;
bad_mesg:
note(0, "smtp: bad message -- no From header");
goto bad;
bad_prot:
if ((n = strlen(e)) > 0 && e[n - 1] == '\r')
e[n - 1] = 0;
note(0, "smtp: %s: service error:%s", svc, e);
goto bad;
bad_send:
note(SYSTEM, "smtp: %s: service write error", svc);
goto bad;
bad_recv:
note(SYSTEM, "smtp: %s: service read error", svc);
bad:
r = -1;
done:
sfclose(sp);
sfclose(rp);
return r;
}