Mirror of :pserver:cvs@cvs.fefe.de:/cvs libowfat https://www.fefe.de/libowfat/
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#include "scan.h"
#include "ip6.h"
#include "str.h"
#include <errno.h>
#include <string.h>
#include <sys/poll.h>
#include <unistd.h>
#include "socket.h"
#include <sys/socket.h>
#include "ndelay.h"
#ifdef __dietlibc__
#include <write12.h>
#else
static inline __write1(const char* s) { write(1,s,str_len(s)); }
static inline __write2(const char* s) { write(2,s,str_len(s)); }
#endif
#include <stdlib.h>
void panic(const char* s) {
int i=str_len(s);
__write2(s);
if (s[i-1]!='\n') {
__write2(": ");
__write2(strerror(errno));
__write2("\n");
}
exit(1);
}
void blockingcopy(int src,int dest) {
char buf[8192];
int i,j,k;
for (;;) {
i=read(src,buf,sizeof buf);
if (i==-1) panic("client: error: read() failed");
if (i==0) exit(0);
for (j=0; j<i; ) {
k=write(dest,buf+j,i-j);
if (k==-1) panic("client: error: write() failed");
if (k==0) panic("client: error: short write\n");
j+=k;
}
}
}
int main(int argc,char* argv[]) {
int s;
uint16 port=2342;
uint32 scope_id=0;
char ip[16];
char buf[8192];
int i;
struct pollfd p[2];
if (argc<3) {
usage:
__write2("usage: client ip port\n\nexample: dump -0 -f - | client 10.0.0.149 8000\n");
return 0;
}
if (argv[1][i=scan_ip6if(argv[1],ip,&scope_id)]) {
__write2("client: error: invalid ip address!\n");
goto usage;
}
if (argv[2][scan_ushort(argv[2],&port)]) {
__write2("client: error: invalid port number!\n");
goto usage;
}
if (byte_equal(ip,12,V4mappedprefix)) {
s=socket_tcp4b();
if (s==-1) panic("client: error: socket() failed");
if (socket_connect4(s,ip+12,port)==-1) panic("client: error: connect() failed");
} else {
s=socket_tcp6b();
if (s==-1) panic("client: error: socket() failed");
if (socket_connect6(s,ip,port,scope_id)==-1) panic("client: error: connect() failed");
}
ndelay_off(s);
p[0].fd=0; p[0].events=POLLIN;
p[1].fd=s; p[1].events=POLLIN;
while (poll(p,2,5000)) {
if (p[0].revents) {
int j;
if (p[0].revents&POLLERR)
panic("client: error: poll() signals POLLERR\n");
i=read(0,buf,sizeof(buf));
if (i==0) { shutdown(s,SHUT_WR); blockingcopy(s,1); }
for (j=0; j<i; ) {
int k=write(s,buf+j,i-j);
if (k==-1) panic("client: error: write() failed");
if (k==0) panic("client: error: short write!\n");
j+=k;
}
}
if (p[1].revents) {
int j;
if (p[1].revents&POLLERR)
panic("client: error: poll() signals POLLERR\n");
i=read(s,buf,sizeof(buf));
if (i==0) { shutdown(1,SHUT_WR); blockingcopy(0,s); }
for (j=0; j<i; ) {
int k=write(1,buf+j,i-j);
if (k==-1) panic("client: error: write() failed");
if (k==0) panic("client: error: short write!\n");
j+=k;
}
}
}
return 0;
}