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boinc/client/http.C

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// The contents of this file are subject to the Mozilla Public License
// Version 1.0 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
// License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is the Berkeley Open Infrastructure for Network Computing.
//
// The Initial Developer of the Original Code is the SETI@home project.
// Portions created by the SETI@home project are Copyright (C) 2002
// University of California at Berkeley. All Rights Reserved.
//
// Contributor(s):
//
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "error_numbers.h"
#include "filesys.h"
#include "log_flags.h"
#include "http.h"
#define HTTP_BLOCKSIZE 4096
void parse_url(char* url, char* host, char* file) {
char* p;
char buf[256];
if (strncmp(url, "http://", 7) == 0) strcpy(buf, url+7);
else strcpy(buf, url);
p = strchr(buf, '/');
if (p) {
strcpy(file, p+1);
*p = 0;
} else {
strcpy(file, "");
}
strcpy(host, buf);
}
// Note: HTTP 1.1 keeps connection open.
// We use 1.0 so we don't have to count bytes.
//
void http_get_request_header(char* buf, char* host, char* file) {
sprintf(buf,
"GET /%s HTTP/1.0\015\012"
"User-Agent: BOINC client\015\012"
"Host: %s:80\015\012"
"Accept: */*\015\012"
"\015\012",
file, host
);
}
void http_post_request_header(char* buf, char* host, char* file, int size) {
sprintf(buf,
"POST /%s HTTP/1.0\015\012"
"Pragma: no-cache\015\012"
"Cache-Control: no-cache\015\012"
"Host: %s:80\015\012"
"Content-Type: application/octet-stream\015\012"
"Content-Length: %d\015\012"
"\015\012",
file, host, size
);
}
void http_put_request_header(char* buf, char* host, char* file, int size) {
sprintf(buf,
"PUT /%s HTTP/1.0\015\012"
"Pragma: no-cache\015\012"
"Cache-Control: no-cache\015\012"
"Host: %s:80\015\012"
"Content-Type: application/octet-stream\015\012"
"Content-Length: %d\015\012"
"\015\012",
file, host, size
);
}
int read_http_reply_header(int socket, HTTP_REPLY_HEADER& header) {
int i;
char buf[1024], *p;
memset(buf, 0, sizeof(buf));
header.content_length = 0;
header.status = 404; // default to failure
for (i=0; i<1024; i++) {
read(socket, buf+i, 1);
if (strstr(buf, "\r\n\r\n") || strstr(buf, "\n\n")) {
if (log_flags.http_debug) printf("reply header:\n%s", buf);
p = strchr(buf, ' ');
if (p) {
header.status = atoi(p+1);
}
p = strstr(buf, "Content-Length: ");
if (p) {
header.content_length = atoi(p+strlen("Content-Length: "));
}
return 0;
}
}
return 1;
}
HTTP_OP::HTTP_OP() {
http_op_state = HTTP_STATE_IDLE;
}
HTTP_OP::~HTTP_OP() {
}
int HTTP_OP::init_get(char* url, char* out) {
parse_url(url, hostname, filename);
NET_XFER::init(hostname, 80, HTTP_BLOCKSIZE);
strcpy(outfile, out);
http_op_type = HTTP_OP_GET;
http_op_state = HTTP_STATE_CONNECTING;
return 0;
}
int HTTP_OP::init_post(char* url, char* in, char* out) {
int retval;
parse_url(url, hostname, filename);
NET_XFER::init(hostname, 80, HTTP_BLOCKSIZE);
strcpy(infile, in);
strcpy(outfile, out);
retval = file_size(infile, content_length);
if (retval) return retval;
http_op_type = HTTP_OP_POST;
http_op_state = HTTP_STATE_CONNECTING;
return 0;
}
int HTTP_OP::init_put(char* url, char* in) {
int retval;
parse_url(url, hostname, filename);
NET_XFER::init(hostname, 80, HTTP_BLOCKSIZE);
strcpy(infile, in);
retval = file_size(infile, content_length);
if (retval) return retval;
http_op_type = HTTP_OP_PUT;
http_op_state = HTTP_STATE_CONNECTING;
return 0;
}
bool HTTP_OP::http_op_done() {
return (http_op_state == HTTP_STATE_DONE);
}
HTTP_OP_SET::HTTP_OP_SET(NET_XFER_SET* p) {
net_xfers = p;
}
int HTTP_OP_SET::insert(HTTP_OP* ho) {
int retval;
retval = net_xfers->insert(ho);
if (retval) return retval;
http_ops.push_back(ho);
return 0;
}
bool HTTP_OP_SET::poll() {
unsigned int i;
char hdr[256];
HTTP_OP* htp;
int n;
bool action = false;
for (i=0; i<http_ops.size(); i++) {
htp = http_ops[i];
switch(htp->http_op_state) {
case HTTP_STATE_CONNECTING:
if (htp->is_connected) {
htp->http_op_state = HTTP_STATE_REQUEST_HEADER;
htp->want_upload = true;
action = true;
}
break;
case HTTP_STATE_REQUEST_HEADER:
if (htp->io_ready) {
action = true;
switch(htp->http_op_type) {
case HTTP_OP_POST:
http_post_request_header(
hdr, htp->hostname, htp->filename, htp->content_length
);
break;
case HTTP_OP_GET:
http_get_request_header(hdr, htp->hostname, htp->filename);
break;
case HTTP_OP_PUT:
http_put_request_header(
hdr, htp->hostname, htp->filename, htp->content_length
);
break;
}
n = write(htp->socket, hdr, strlen(hdr));
if (log_flags.http_debug) {
printf("wrote HTTP header: %d bytes\n", n);
}
htp->io_ready = false;
switch(htp->http_op_type) {
case HTTP_OP_POST:
case HTTP_OP_PUT:
htp->http_op_state = HTTP_STATE_REQUEST_BODY;
htp->file = fopen(htp->infile, "r");
if (!htp->file) {
fprintf(stderr, "HTTP_OP: no input file %s\n", htp->infile);
htp->io_done = true;
htp->http_op_retval = ERR_FOPEN;
htp->http_op_state = HTTP_STATE_DONE;
break;
}
htp->do_file_io = true;
break;
case HTTP_OP_GET:
htp->http_op_state = HTTP_STATE_REPLY_HEADER;
htp->want_upload = false;
htp->want_download = true;
break;
}
}
break;
case HTTP_STATE_REQUEST_BODY:
if (htp->io_done) {
action = true;
if (log_flags.http_debug) {
printf("finished sending request body\n");
}
htp->http_op_state = HTTP_STATE_REPLY_HEADER;
fclose(htp->file);
htp->file = 0;
htp->do_file_io = false;
htp->want_upload = false;
htp->want_download = true;
}
case HTTP_STATE_REPLY_HEADER:
if (htp->io_ready) {
action = true;
if (log_flags.http_debug) printf("got reply header\n");
read_http_reply_header(htp->socket, htp->hrh);
if (htp->hrh.status/100 != 2) {
htp->http_op_state = HTTP_STATE_DONE;
htp->http_op_retval = htp->hrh.status;
break;
}
switch (htp->http_op_type) {
case HTTP_OP_GET:
case HTTP_OP_POST:
htp->http_op_state = HTTP_STATE_REPLY_BODY;
// KLUDGE - should check for file first
unlink(htp->outfile);
htp->file = fopen(htp->outfile, "w");
if (!htp->file) {
fprintf(stderr,
"HTTP_OP: can't open output file %s\n",
htp->outfile
);
htp->io_done = true;
htp->http_op_state = HTTP_STATE_DONE;
htp->http_op_retval = ERR_FOPEN;
break;
}
htp->do_file_io = true;
break;
case HTTP_OP_PUT:
htp->http_op_state = HTTP_STATE_DONE;
htp->http_op_retval = 0;
}
}
break;
case HTTP_STATE_REPLY_BODY:
if (htp->io_done) {
action = true;
if (log_flags.http_debug) printf("got reply body\n");
fclose(htp->file);
htp->file = 0;
htp->http_op_state = HTTP_STATE_DONE;
htp->http_op_retval = 0;
break;
}
}
}
return action;
}
int HTTP_OP_SET::remove(HTTP_OP* p) {
vector<HTTP_OP*>::iterator iter;
net_xfers->remove(p);
iter = http_ops.begin();
while (iter != http_ops.end()) {
if (*iter == p) {
http_ops.erase(iter);
return 0;
}
iter++;
}
fprintf(stderr, "HTTP_OP_SET::remove(): not found\n");
return 1;
}
int HTTP_OP_SET::size() {
return http_ops.size();
}
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