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Provide support for negotiating a stratum connection via http proxies.

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This commit is contained in:
Con Kolivas 2013-09-06 00:34:04 +10:00
parent 8fa01556f2
commit 17019804c1
1 changed files with 82 additions and 0 deletions
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82
util.c
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@ -1719,6 +1719,70 @@ bool auth_stratum(struct pool *pool)
return ret;
}
static int recv_byte(int sockd)
{
unsigned char c;
if (recv(sockd, &c, 1, 0) != -1)
return c;
return -1;
}
static bool http_negotiate(struct pool *pool, int sockd, bool http0)
{
char buf[1024];
int i, len;
if (http0) {
snprintf(buf, 1024, "CONNECT %s:%s HTTP/1.0\r\n\r\n",
pool->sockaddr_url, pool->stratum_port);
} else {
snprintf(buf, 1024, "CONNECT %s:%s HTTP/1.1\r\nHost: %s:%s\r\n\r\n",
pool->sockaddr_url, pool->stratum_port, pool->sockaddr_url,
pool->stratum_port);
}
applog(LOG_DEBUG, "Sending proxy %s:%s - %s",
pool->sockaddr_proxy_url, pool->sockaddr_proxy_port, buf);
send(sockd, buf, strlen(buf), 0);
len = recv(sockd, buf, 12, 0);
if (len <= 0) {
applog(LOG_WARNING, "Couldn't read from proxy %s:%s after sending CONNECT",
pool->sockaddr_proxy_url, pool->sockaddr_proxy_port);
return false;
}
buf[len] = '\0';
applog(LOG_DEBUG, "Received from proxy %s:%s - %s",
pool->sockaddr_proxy_url, pool->sockaddr_proxy_port, buf);
if (strcmp(buf, "HTTP/1.1 200") && strcmp(buf, "HTTP/1.0 200")) {
applog(LOG_WARNING, "HTTP Error from proxy %s:%s - %s",
pool->sockaddr_proxy_url, pool->sockaddr_proxy_port, buf);
return false;
}
/* Ignore unwanted headers till we get desired response */
for (i = 0; i < 4; i++) {
buf[i] = recv_byte(sockd);
if (buf[i] == -1) {
applog(LOG_WARNING, "Couldn't read HTTP byte from proxy %s:%s",
pool->sockaddr_proxy_url, pool->sockaddr_proxy_port);
return false;
}
}
while (strncmp(buf, "\r\n\r\n", 4)) {
for (i = 0; i < 3; i++)
buf[i] = buf[i + 1];
buf[3] = recv_byte(sockd);
if (buf[3] == -1) {
applog(LOG_WARNING, "Couldn't read HTTP byte from proxy %s:%s",
pool->sockaddr_proxy_url, pool->sockaddr_proxy_port);
return false;
}
}
return true;
}
static bool setup_stratum_socket(struct pool *pool)
{
struct addrinfo servinfobase, *servinfo, *hints, pbase, *p;
@ -1780,6 +1844,24 @@ static bool setup_stratum_socket(struct pool *pool)
}
freeaddrinfo(servinfo);
if (pool->rpc_proxy) {
switch (pool->rpc_proxytype) {
case CURLPROXY_HTTP_1_0:
if (!http_negotiate(pool, sockd, true))
return false;
break;
case CURLPROXY_HTTP:
if (!http_negotiate(pool, sockd, false))
return false;
break;
default:
applog(LOG_WARNING, "Unsupported proxy type for %s:%s",
pool->sockaddr_proxy_url, pool->sockaddr_proxy_port);
return false;
break;
}
}
if (!pool->sockbuf) {
pool->sockbuf = calloc(RBUFSIZE, 1);
if (!pool->sockbuf)