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//#define LOCAL_DEBUG
#include "debug.h"
#include "config.h"
#include "acbuf.h"
#include "fileio.h"
#include <unistd.h>
#include "sockio.h"
namespace acng
{
bool acbuf::setsize(unsigned int c) {
if(m_nCapacity==c)
return true;
char *p = (char*) realloc(m_buf, c+1);
if(!p)
return false;
m_buf=p;
m_nCapacity=c;
m_buf[c]=0; // terminate to make string operations safe
return true;
}
bool acbuf::initFromFile(const char *szPath)
{
struct stat statbuf;
if (0!=stat(szPath, &statbuf))
return false;
int fd=::open(szPath, O_RDONLY);
if (fd<0)
return false;
clear();
if(!setsize(statbuf.st_size))
return false;
while (freecapa()>0)
{
if (sysread(fd) < 0)
{
forceclose(fd);
return false;
}
}
forceclose(fd);
return true;
}
int acbuf::syswrite(int fd, unsigned int maxlen) {
size_t todo(std::min(maxlen, size()));
int n;
do
{
n=::write(fd, rptr(), todo);
} while(n<0 && errno==EINTR);
if(n<0 && errno==EAGAIN)
n=0;
if(n<0)
return -errno;
drop(n);
return n;
}
int acbuf::sysread(int fd, unsigned int maxlen)
{
size_t todo(std::min(maxlen, freecapa()));
int n;
do {
n=::read(fd, m_buf+w, todo);
} while( (n<0 && EINTR == errno) /* || (EAGAIN == errno && n<=0) */ ); // cannot handle EAGAIN here, let the caller check errno
if(n<0)
return -errno;
if(n>0)
w+=n;
return(n);
}
bool tSS::send(int nConFd, mstring* sErrorStatus)
{
while (!empty())
{
auto n = ::send(nConFd, rptr(), size(), 0);
if (n > 0)
{
drop(n);
continue;
}
if (n <= 0)
{
if (EINTR == errno || EAGAIN == errno)
{
struct timeval tv{cfg::nettimeout, 0};
fd_set wfds;
FD_ZERO(&wfds);
FD_SET(nConFd, &wfds);
auto r=::select(nConFd + 1, nullptr, &wfds, nullptr, &tv);
if(!r && errno != EINTR)
{
if(sErrorStatus)
*sErrorStatus = "502 Socket timeout";
return false;
}
continue;
}
#ifdef MINIBUILD
if(sErrorStatus)
*sErrorStatus = "502 Socket error";
#else
if(sErrorStatus)
*sErrorStatus = tErrnoFmter("502 Socket error, ");
#endif
return false;
}
}
return true;
}
bool tSS::recv(int nConFd, mstring* sErrorStatus)
{
struct timeval tv
{ cfg::nettimeout, 0 };
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(nConFd, &rfds);
auto r = ::select(nConFd + 1, &rfds, nullptr, nullptr, &tv);
if (!r)
{
if(errno == EINTR)
return true;
if(sErrorStatus)
*sErrorStatus = "502 Socket timeout";
return false;
}
// must be readable
r = ::recv(nConFd, wptr(), freecapa(), 0);
if(r<=0)
{
#ifdef MINIBUILD
if(sErrorStatus)
*sErrorStatus = "502 Socket error";
#else
if(sErrorStatus)
*sErrorStatus = tErrnoFmter("502 Socket error, ");
#endif
return false;
}
got(r);
return true;
}
/*
tSS & tSS::addEscaped(const char *fmt)
{
if(!fmt || !*fmt)
return *this;
int nl=strlen(fmt);
reserve(length()+nl);
char *p=wptr();
for(;*fmt;fmt++)
{
if(*fmt=='\\')
*(p++)=unEscape(*(++fmt));
else
*(p++)=*fmt;
}
got(p-wptr());
return *this;
}
*/
}
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