forked from agorise/c-ipfs
Initial API implementation.
This commit is contained in:
parent
2bb70b01be
commit
cce43e2bce
2 changed files with 250 additions and 0 deletions
215
core/api.c
Normal file
215
core/api.c
Normal file
|
|
@ -0,0 +1,215 @@
|
|||
/**
|
||||
* Methods for lightweight/specific HTTP for API communication.
|
||||
*/
|
||||
#include <pthread.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <stdio.h>
|
||||
#include <arpa/inet.h>
|
||||
|
||||
#include "libp2p/net/p2pnet.h"
|
||||
#include "libp2p/utils/logger.h"
|
||||
#include "ipfs/core/api.h"
|
||||
|
||||
volatile int conns_count;
|
||||
|
||||
pthread_t listen_thread = 0;
|
||||
|
||||
struct s_list api_list;
|
||||
|
||||
/**
|
||||
* Create a new bitswap exchange
|
||||
* @param ptr is the connection index in api_list, integer not pointer, cast required.
|
||||
* @returns nothing
|
||||
*/
|
||||
void *api_connection_thread (void *ptr)
|
||||
{
|
||||
int timeout, s, r;
|
||||
const INT_TYPE i = (INT_TYPE) ptr;
|
||||
char buf[MAX_READ+1];
|
||||
char client[INET_ADDRSTRLEN];
|
||||
|
||||
buf[MAX_READ] = '\0';
|
||||
|
||||
s = api_list.conns[i]->socket;
|
||||
timeout = api_list.timeout;
|
||||
|
||||
if (socket_read_select4(s, timeout) <= 0) {
|
||||
libp2p_logger_error("api", "Client connection timeout.\n");
|
||||
goto quit;
|
||||
}
|
||||
r = read(s, buf, sizeof buf);
|
||||
if (r <= 0) {
|
||||
libp2p_logger_error("api", "Read from client fail.\n");
|
||||
goto quit;
|
||||
}
|
||||
buf[r] = '\0';
|
||||
if (cstrstart(buf, "GET ")) {
|
||||
// just an error message, because it's not used.
|
||||
write_cstr (s, "HTTP/1.1 404 Not Found\r\n"
|
||||
"Content-Type: text/plain; charset=utf-8\r\n"
|
||||
"X-Content-Type-Options: nosniff\r\n"
|
||||
"Content-Length: 19\r\n\r\n"
|
||||
"404 page not found\n");
|
||||
//} else if (cstrstart(buf, "POST ")) {
|
||||
// TODO: Handle chunked/gzip/form-data/json POST requests.
|
||||
} else {
|
||||
write_cstr (s, "HTTP/1.1 400 Bad Request\r\n"
|
||||
"Content-Type: text/plain\r\n"
|
||||
"Connection: close\r\n\r\n"
|
||||
"400 Bad Request");
|
||||
}
|
||||
|
||||
quit:
|
||||
if (inet_ntop(AF_INET, &(api_list.conns[i]->ipv4), client, INET_ADDRSTRLEN) == NULL)
|
||||
strcpy(client, "UNKNOW");
|
||||
libp2p_logger_error("api", "Closing client connection %s:%d (%d).\n", client, api_list.conns[i]->port, i+1);
|
||||
close(s);
|
||||
free (api_list.conns[i]);
|
||||
api_list.conns[i] = NULL;
|
||||
conns_count--;
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* Close all connections stopping respectives pthreads and free allocated memory.
|
||||
*/
|
||||
void api_connections_cleanup (void)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (conns_count > 0 && api_list.conns) {
|
||||
for (i = 0 ; i < api_list.max_conns ; i++) {
|
||||
if (api_list.conns[i]->pthread) {
|
||||
pthread_cancel (api_list.conns[i]->pthread);
|
||||
close (api_list.conns[i]->socket);
|
||||
free (api_list.conns[i]);
|
||||
api_list.conns[i] = NULL;
|
||||
}
|
||||
}
|
||||
conns_count = 0;
|
||||
}
|
||||
if (api_list.conns) {
|
||||
free (api_list.conns);
|
||||
api_list.conns = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Pthread to keep in background dealing with client connections.
|
||||
* @param ptr is not used.
|
||||
* @returns nothing
|
||||
*/
|
||||
void *api_listen_thread (void *ptr)
|
||||
{
|
||||
int s;
|
||||
INT_TYPE i;
|
||||
uint32_t ipv4;
|
||||
uint16_t port;
|
||||
char client[INET_ADDRSTRLEN];
|
||||
|
||||
conns_count = 0;
|
||||
|
||||
for (;;) {
|
||||
s = socket_accept4(api_list.socket, &ipv4, &port);
|
||||
if (s <= 0) {
|
||||
break;
|
||||
}
|
||||
if (conns_count >= api_list.max_conns) { // limit reached.
|
||||
libp2p_logger_error("api", "Limit of connections reached (%d).\n", api_list.max_conns);
|
||||
close (s);
|
||||
continue;
|
||||
}
|
||||
|
||||
conns_count++;
|
||||
for (i = 0 ; i < api_list.max_conns && api_list.conns[i] ; i++);
|
||||
api_list.conns[i] = malloc (sizeof (struct s_conns));
|
||||
if (!api_list.conns[i]) {
|
||||
libp2p_logger_error("api", "Fail to allocate memory to accept connection.\n");
|
||||
close (s);
|
||||
continue;
|
||||
}
|
||||
if (inet_ntop(AF_INET, &ipv4, client, INET_ADDRSTRLEN) == NULL)
|
||||
strcpy(client, "UNKNOW");
|
||||
libp2p_logger_error("api", "Accept connection %s:%d (%d/%d), pthread %d.\n", client, port, conns_count, api_list.max_conns, i+1);
|
||||
api_list.conns[i]->socket = s;
|
||||
api_list.conns[i]->ipv4 = ipv4;
|
||||
api_list.conns[i]->port = port;
|
||||
if (pthread_create(&(api_list.conns[i]->pthread), NULL, api_connection_thread, (void*)i)) {
|
||||
libp2p_logger_error("api", "Create pthread fail.\n");
|
||||
free (api_list.conns[i]);
|
||||
api_list.conns[i] = NULL;
|
||||
conns_count--;
|
||||
close(s);
|
||||
}
|
||||
}
|
||||
api_connections_cleanup ();
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* Start API interface daemon.
|
||||
* @param port.
|
||||
* @param max_conns.
|
||||
* @param timeout time out of client connection.
|
||||
* @returns 0 when failure or 1 if success.
|
||||
*/
|
||||
int api_start (uint16_t port, int max_conns, int timeout)
|
||||
{
|
||||
int s;
|
||||
size_t alloc_size = sizeof(void*) * max_conns;
|
||||
|
||||
api_list.ipv4 = hostname_to_ip("127.0.0.1"); // api is listening only on loopback.
|
||||
api_list.port = port;
|
||||
|
||||
if (listen_thread != 0) {
|
||||
libp2p_logger_error("api", "API already running.\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if ((s = socket_listen(socket_tcp4(), &(api_list.ipv4), &(api_list.port))) <= 0) {
|
||||
libp2p_logger_error("api", "Failed to init API. port: %d\n", port);
|
||||
return 0;
|
||||
}
|
||||
|
||||
api_list.socket = s;
|
||||
api_list.max_conns = max_conns;
|
||||
api_list.timeout = timeout;
|
||||
|
||||
api_list.conns = malloc (alloc_size);
|
||||
if (!api_list.conns) {
|
||||
close (s);
|
||||
libp2p_logger_error("api", "Error allocating memory.\n");
|
||||
return 0;
|
||||
}
|
||||
memset(api_list.conns, 0, alloc_size);
|
||||
|
||||
if (pthread_create(&listen_thread, NULL, api_listen_thread, NULL)) {
|
||||
close (s);
|
||||
free (api_list.conns);
|
||||
api_list.conns = NULL;
|
||||
listen_thread = 0;
|
||||
libp2p_logger_error("api", "Error creating thread for API.\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Stop API.
|
||||
* @returns 0 when failure or 1 if success.
|
||||
*/
|
||||
int api_stop (void)
|
||||
{
|
||||
if (!listen_thread) return 0;
|
||||
pthread_cancel(listen_thread);
|
||||
|
||||
api_connections_cleanup ();
|
||||
|
||||
listen_thread = 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
35
include/ipfs/core/api.h
Normal file
35
include/ipfs/core/api.h
Normal file
|
|
@ -0,0 +1,35 @@
|
|||
#pragma once
|
||||
|
||||
#ifdef __x86_64__
|
||||
#define INT_TYPE uint64_t
|
||||
#else
|
||||
#define INT_TYPE uint32_t
|
||||
#endif
|
||||
|
||||
#define MAX_READ (32*1024) // 32k
|
||||
|
||||
struct s_list {
|
||||
int socket;
|
||||
uint32_t ipv4;
|
||||
uint16_t port;
|
||||
int max_conns;
|
||||
int timeout;
|
||||
struct s_conns {
|
||||
int socket;
|
||||
uint32_t ipv4;
|
||||
uint16_t port;
|
||||
pthread_t pthread;
|
||||
} **conns;
|
||||
};
|
||||
|
||||
#define write_cstr(f,s) write(f,s,sizeof(s)-1)
|
||||
#define write_str(f,s) write(f,s,strlen(s))
|
||||
|
||||
#define cstrstart(a,b) (memcmp(a,b,sizeof(b)-1)==0)
|
||||
#define strstart(a,b) (memcmp(a,b,strlen(b))==0)
|
||||
|
||||
void *api_connection_thread (void *ptr);
|
||||
void api_connections_cleanup (void);
|
||||
void *api_listen_thread (void *ptr);
|
||||
int api_start (uint16_t port, int max_conns, int timeout);
|
||||
int api_stop (void);
|
||||
Loading…
Reference in a new issue