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server.c
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server.c
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#include <arpa/inet.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <stdio.h>
#include "server.h"
#define BUFFER 512
typedef struct server S;
void serverListen(S* srv)
{
int sockfd, newsockfd, sockopt, clilen, pid, chunk, i;
struct sockaddr_in srvaddr, cliaddr;
char *buffer, *request;
char cliip[INET_ADDRSTRLEN];
clilen = sizeof(cliaddr);
// Open inet stream socket
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if (sockfd < 0) return perror("socket()");
// Set socket options
sockopt = 1;
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &sockopt, sizeof sockopt);
// Init server address
memset(&srvaddr, 0, sizeof(srvaddr));
srvaddr.sin_family = AF_INET;
srvaddr.sin_addr.s_addr = INADDR_ANY;
srvaddr.sin_port = htons(srv->port);
// Bind & listen socket
if (bind(sockfd, (struct sockaddr*) &srvaddr, sizeof(srvaddr)) < 0) return perror("bind()");
if (listen(sockfd, 5) < 0) return perror("listen()");
// Listen to connexions
while(1)
{
newsockfd = accept(sockfd, (struct sockaddr *) &cliaddr, (socklen_t *) &clilen);
if (newsockfd < 0) return perror("accept()");
// Child process
pid = fork();
if (pid < 0) return perror("fork()");
if (pid != 0) close(newsockfd);
else
{
i = 0;
close(sockfd);
// Init buffer
buffer = malloc(BUFFER + 1);
if (buffer == NULL) return perror("buffer malloc()");
memset(buffer, 0, BUFFER + 1);
// Get the complete http request
while((chunk = recv(newsockfd, buffer, BUFFER - 1, MSG_DONTWAIT)) > 0)
{
if (i++ == 0)
{
request = malloc(BUFFER * i + 1);
if (request == NULL) return perror("request malloc()");
strcpy(request, buffer);
}
else
{
request = realloc(request, (BUFFER * i + 1));
if (request == NULL) return perror("request realloc()");
strcat(request, buffer);
}
// Reset buffer
memset(buffer, 0, BUFFER + 1);
}
// Get client IP and convert
inet_ntop(AF_INET, &(cliaddr.sin_addr), cliip, INET_ADDRSTRLEN);
// Call handler
srv->handler(request, cliip, newsockfd);
free(buffer);
free(request);
close(newsockfd);
return;
}
}
return;
}