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Libc: gracefully handle invalid socketaddr arguments 

Ref #2682
This commit is contained in:
Ehmry - 2018-02-22 13:40:26 +01:00 committed by Christian Helmuth
parent e4328de251
commit 96579a72e0
1 changed files with 21 additions and 9 deletions
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30
repos/libports/src/lib/libc/socket_fs_plugin.cc
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@ -527,8 +527,13 @@ extern "C" int socket_fs_bind(int libc_fd, sockaddr const *addr, socklen_t addrl
return Errno(EAFNOSUPPORT);
}
Sockaddr_string addr_string(host_string(*(sockaddr_in *)addr),
port_string(*(sockaddr_in *)addr));
Sockaddr_string addr_string;
try {
addr_string = Sockaddr_string(host_string(*(sockaddr_in *)addr),
port_string(*(sockaddr_in *)addr));
}
catch (Address_conversion_failed) { return Errno(EINVAL); }
try {
int const len = strlen(addr_string.base());
@ -562,8 +567,12 @@ extern "C" int socket_fs_connect(int libc_fd, sockaddr const *addr, socklen_t ad
/* TODO ECONNREFUSED */
/* TODO maybe EALREADY, EINPROGRESS, ETIMEDOUT */
Sockaddr_string addr_string(host_string(*(sockaddr_in const *)addr),
port_string(*(sockaddr_in const *)addr));
Sockaddr_string addr_string;
try {
addr_string = Sockaddr_string(host_string(*(sockaddr_in const *)addr),
port_string(*(sockaddr_in const *)addr));
}
catch (Address_conversion_failed) { return Errno(EINVAL); }
int const len = strlen(addr_string.base());
int const n = write(context->connect_fd(), addr_string.base(), len);
@ -658,12 +667,15 @@ static ssize_t do_sendto(Libc::File_descriptor *fd,
try {
if (dest_addr) {
Sockaddr_string addr_string(host_string(*(sockaddr_in const *)dest_addr),
port_string(*(sockaddr_in const *)dest_addr));
try {
Sockaddr_string addr_string(host_string(*(sockaddr_in const *)dest_addr),
port_string(*(sockaddr_in const *)dest_addr));
int const len = strlen(addr_string.base());
int const n = write(context->remote_fd(), addr_string.base(), len);
if (n != len) return Errno(EIO);
int const len = strlen(addr_string.base());
int const n = write(context->remote_fd(), addr_string.base(), len);
if (n != len) return Errno(EIO);
}
catch (Address_conversion_failed) { return Errno(EINVAL); }
}
lseek(context->data_fd(), 0, 0);