mirror of
https://github.com/sogou/workflow.git
synced 2026-01-12 00:05:37 +08:00
130 lines
2.4 KiB
C++
130 lines
2.4 KiB
C++
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
#include <arpa/inet.h>
|
|
#include <utility>
|
|
#include "message.h"
|
|
|
|
namespace protocol
|
|
{
|
|
|
|
int TutorialMessage::encode(struct iovec vectors[], int max/*max==8192*/)
|
|
{
|
|
uint32_t n = htonl(this->body_size);
|
|
|
|
memcpy(this->head, &n, 4);
|
|
vectors[0].iov_base = this->head;
|
|
vectors[0].iov_len = 4;
|
|
vectors[1].iov_base = this->body;
|
|
vectors[1].iov_len = this->body_size;
|
|
|
|
return 2; /* return the number of vectors used, no more then max. */
|
|
}
|
|
|
|
int TutorialMessage::append(const void *buf, size_t size)
|
|
{
|
|
if (this->head_received < 4)
|
|
{
|
|
size_t head_left;
|
|
void *p;
|
|
|
|
p = &this->head[head_received];
|
|
head_left = 4 - this->head_received;
|
|
if (size < 4 - this->head_received)
|
|
{
|
|
memcpy(p, buf, size);
|
|
this->head_received += size;
|
|
return 0;
|
|
}
|
|
this->head_received += head_left;
|
|
|
|
memcpy(p, buf, head_left);
|
|
size -= head_left;
|
|
buf = (const char *)buf + head_left;
|
|
|
|
p = this->head;
|
|
this->body_size = ntohl(*(uint32_t *)p);
|
|
if (this->body_size > this->size_limit)
|
|
{
|
|
errno = EMSGSIZE;
|
|
return -1;
|
|
}
|
|
|
|
this->body = (char *)malloc(this->body_size);
|
|
if (!this->body)
|
|
return -1;
|
|
|
|
this->body_received = 0;
|
|
}
|
|
|
|
size_t body_left = this->body_size - this->body_received;
|
|
|
|
if (size > body_left)
|
|
{
|
|
errno = EBADMSG;
|
|
return -1;
|
|
}
|
|
|
|
memcpy(this->body + this->body_received, buf, size);
|
|
this->body_received += size;
|
|
if (size < body_left)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int TutorialMessage::set_message_body(const void *body, size_t size)
|
|
{
|
|
void *p = malloc(size);
|
|
|
|
if (!p)
|
|
return -1;
|
|
|
|
memcpy(p, body, size);
|
|
free(this->body);
|
|
this->body = (char *)p;
|
|
this->body_size = size;
|
|
|
|
this->head_received = 4;
|
|
this->body_received = size;
|
|
return 0;
|
|
}
|
|
|
|
TutorialMessage::TutorialMessage(TutorialMessage&& msg) :
|
|
ProtocolMessage(std::move(msg))
|
|
{
|
|
memcpy(this->head, msg.head, 4);
|
|
this->head_received = msg.head_received;
|
|
this->body = msg.body;
|
|
this->body_received = msg.body_received;
|
|
this->body_size = msg.body_size;
|
|
|
|
msg.head_received = 0;
|
|
msg.body = NULL;
|
|
msg.body_size = 0;
|
|
}
|
|
|
|
TutorialMessage& TutorialMessage::operator = (TutorialMessage&& msg)
|
|
{
|
|
if (&msg != this)
|
|
{
|
|
*(ProtocolMessage *)this = std::move(msg);
|
|
|
|
memcpy(this->head, msg.head, 4);
|
|
this->head_received = msg.head_received;
|
|
this->body = msg.body;
|
|
this->body_received = msg.body_received;
|
|
this->body_size = msg.body_size;
|
|
|
|
msg.head_received = 0;
|
|
msg.body = NULL;
|
|
msg.body_size = 0;
|
|
}
|
|
|
|
return *this;
|
|
}
|
|
|
|
}
|
|
|