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#include "common.h"
#include "proc.h"
#include <arpa/inet.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
bool procconn(server* svr, request* requestP, int maxfd){
int ret;
struct sockaddr_in cliaddr; // used by accept()
int clilen;
int conn_fd; // fd for a new connection with client
int file_fd; // fd for file that we open for reading
// TODO: Add IO multiplexing
// Check new connection
clilen = sizeof(cliaddr);
conn_fd = accept(svr->listen_fd, (struct sockaddr*)&cliaddr, (socklen_t*)&clilen);
if (conn_fd < 0) {
if (errno == EINTR || errno == EAGAIN)
return true; // try again
if (errno == ENFILE) {
(void) fprintf(stderr, "out of file descriptor table ... (maxconn %d)\n", maxfd);
return false;
}
e_err_exit("accept");
}
requestP[conn_fd].conn_fd = conn_fd;
strcpy(requestP[conn_fd].host, inet_ntoa(cliaddr.sin_addr));
fprintf(stderr, "getting a new request... fd %d from %s\n", conn_fd, requestP[conn_fd].host);
file_fd = -1;
do {
ret = request_read(&requestP[conn_fd]);
if (ret < 0) {
fprintf(stderr, "bad request from %s\n", requestP[conn_fd].host);
continue;
}
// requestP[conn_fd]->filename is guaranteed to be successfully set.
if (file_fd == -1) {
// open the file here.
fprintf(stderr, "Opening file [%s]\n", requestP[conn_fd].filename);
// TODO: Add lock
// TODO: check if the request should be rejected.
write(requestP[conn_fd].conn_fd, svr->accept_hdr, SVR_ACCEPT_HDR_LEN);
file_fd = open(requestP[conn_fd].filename, O_WRONLY | O_CREAT | O_TRUNC,
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
}
if (ret == 0) break;
write(file_fd, requestP[conn_fd].buf, requestP[conn_fd].buf_len);
} while (ret > 0);
fprintf(stderr, "Done writing file [%s]\n", requestP[conn_fd].filename);
if (file_fd >= 0) close(file_fd);
close(requestP[conn_fd].conn_fd);
request_free(&requestP[conn_fd]);
return true;
}
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