/*
* handle_request - handle one HTTP request/response transaction
*/
void handle_request(int fd)
{
struct stat sbuf;
char buf[MAXLINE], method[MAXLINE], uri[MAXLINE], version[MAXLINE];
char headers[MAXBUF];
char request[MAXLINE], hostname[MAXLINE], arguments[MAXLINE], port[MAXLINE];
int serverfd;
rio_t rio_client;
rio_t rio_server;
/* Read request line and headers */
Rio_readinitb(&rio_client, fd);
if (!Rio_readlineb(&rio_client, buf, MAXLINE))
return;
printf("%s", buf);
sscanf(buf, "%s %s %s", method, uri, version);
if (strcasecmp(method, "GET")) {
clienterror(fd, method, "501", "Not Implemented", "Proxy does not implement this method");
return;
}
process_uri(uri, hostname, arguments, port);
process_hdrs(&rio_client, headers, hostname);
printf("%s\n", request);
printf("%s\n", headers);
sprintf(request, "GET %s HTTP/1.0 \r\n", arguments);
/* send request to server */
serverfd = Open_clientfd(hostname, port);
Rio_writen(serverfd, request, strlen(request));
Rio_writen(serverfd, headers, strlen(headers));
/* answer to client */
Rio_readinitb(&rio_server, serverfd);
process_answer(&rio_server, fd);
}
/*******************************************************************************
* The entry point to client. Builds a request packet, and then sends it. The
* way the packet is built depends on whether the URI and method have been
* specified in the command line arguments.
*******************************************************************************/
int main(int argc, char **argv)
{
int num_bytes;
socket_t sockfd;
int port = 0;
char hostname[MAXHOSTNAMESIZE + 1] = { 0 };
char method[MAXMETHODSIZE + 1] = { 0 };
int pot_number = 0;
char additions[400] = { 0 };
char message[80];
char packet[MAXPACKETSIZE + 1] = { 0 };
int i;
/*check the arguments*/
printf("\n");
for (i = 1; i < argc; ++i) {
if (strcmp(argv[i], "-f") == 0) {
++i;
continue;
}
else if (strcmp(argv[i], "-u") == 0) {
process_uri(argv[++i], &pot_number, additions, hostname, &port);
continue;
}
else if (strcmp(argv[i], "-m") == 0) {
strcpy(method, argv[++i]);
continue;
}
else {
printf("usage: %s [-f \"file\"] | [[-m \"method\"] [- u \"URI\"]]",
argv[0]);
exit(1);
}
}
if (method[0] == '\0') {
get_method(method);
}
/*allows the user to choose the message for a BREW/POST request*/
if (strcmp(method, "BREW") == 0 || strcmp(method, "POST") == 0) {
get_message(message);
}
else {
strcpy(message, "Content-length:0\r\n\r\n");
}
if (strstr(message, "start") && additions[0] == '\0') {
get_additions(additions);
}
if (pot_number == 0) {
pot_number = get_pot_number();
}
if (hostname[0] == '\0') {
get_hostname(hostname);
}
if (port == 0) {
get_port(&port);
}
/*build the packet from the indivdual elements built up to now*/
sprintf(packet, "%s pot-%d HTCPCP/1.0\r\n%s%s", method, pot_number,
additions, message);
sockfd = connect_to_server(hostname, port);
/*send the packet*/
num_bytes = send_message(sockfd, packet);
if (num_bytes == 0) {
printf("Failed to send message %s", packet);
}
/*wait for response*/
do {
num_bytes = receive_message(sockfd, packet, MAXPACKETSIZE);
if (num_bytes != 0) {
packet[num_bytes] = '\0';
printf("received: %s\n", packet);
}
} while (packet[0] == '\0');
disconnect_from_server(sockfd);
return 0;
}
