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// One of the code files for HaxServ
//
// Written by: Test_User <hax@andrewyu.org>
//
// This is free and unencumbered software released into the public
// domain.
//
// Anyone is free to copy, modify, publish, use, compile, sell, or
// distribute this software, either in source code form or as a compiled
// binary, for any purpose, commercial or non-commercial, and by any
// means.
//
// In jurisdictions that recognize copyright laws, the author or authors
// of this software dedicate any and all copyright interest in the
// software to the public domain. We make this dedication for the benefit
// of the public at large and to the detriment of our heirs and
// successors. We intend this dedication to be an overt act of
// relinquishment in perpetuity of all present and future rights to this
// software under copyright law.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
#include <arpa/inet.h>
#include <errno.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#include "config.h"
#include "general_network.h"
#include "haxstring.h"
#include "plaintext_network.h"
int init_plaintext_network(void) {
return 0;
}
int plaintext_send(void *fd, struct string msg) {
while (msg.len > 0) {
ssize_t res;
do {
res = send(*((int*)fd), msg.data, msg.len, 0);
} while (res == -1 && (errno == EINTR));
if (res < 0 || (size_t)res > msg.len) { // res > len shouldn't be possible, but is still an error
return 1;
} else if (res > 0) {
msg.len -= (size_t)res;
msg.data += (size_t)res;
}
}
return 0;
}
size_t plaintext_recv(void *fd, char *data, size_t len, char *err) {
ssize_t res;
do {
res = recv(*((int*)fd), data, len, 0);
} while (res == -1 && (errno == EINTR));
if (res == -1) {
if (errno == EAGAIN || errno == EWOULDBLOCK) {
*err = 1;
} else {
*err = 3;
}
return 0;
} else if (res == 0) {
*err = 2;
return 0;
}
*err = 0;
return (size_t)res;
}
int plaintext_connect(void **handle, struct string address, struct string port, struct string *addr_out) {
struct sockaddr sockaddr;
if (resolve(address, port, &sockaddr) != 0)
return -1;
int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (fd == -1)
return -1;
{
struct timeval timeout = {
.tv_sec = PING_INTERVAL,
.tv_usec = 0,
};
setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
}
int res;
do {
res = connect(fd, &sockaddr, sizeof(sockaddr));
} while (res < 0 && errno == EINTR);
if (res < 0) {
close(fd);
return -1;
}
*handle = malloc(sizeof(fd));
if (!handle) {
close(fd);
return -1;
}
*((int*)*handle) = fd;
addr_out->data = malloc(sizeof(sockaddr));
if (!addr_out->data) {
free(handle);
close(fd);
return -1;
}
memcpy(addr_out->data, &sockaddr, sizeof(sockaddr));
addr_out->len = sizeof(sockaddr);
return fd;
}
int plaintext_accept(int listen_fd, void **handle, struct string *addr) {
struct sockaddr address;
socklen_t address_len = sizeof(address);
int con_fd;
do {
con_fd = accept(listen_fd, &address, &address_len);
} while (con_fd == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK || errno == ENETDOWN || errno == EPROTO || errno == ENOPROTOOPT || errno == EHOSTDOWN || errno == ENONET || errno == EHOSTUNREACH || errno == EOPNOTSUPP || errno == ENETUNREACH));
if (con_fd == -1)
return -1;
addr->data = malloc(address_len);
if (addr->data == 0 && address_len != 0) {
close(con_fd);
return -1;
}
memcpy(addr->data, &address, address_len);
addr->len = address_len;
*handle = malloc(sizeof(con_fd));
if (!handle) {
free(addr->data);
close(con_fd);
return -1;
}
*((int*)*handle) = con_fd;
return con_fd;
}
void plaintext_shutdown(void *handle) {
shutdown(*((int*)handle), SHUT_RDWR);
}
void plaintext_close(int fd, void *handle) {
free(handle);
close(fd);
}
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