From 1eeb050a2cc6c582c390614080fbeaea019b2dac Mon Sep 17 00:00:00 2001
From: Richard Jones <rjones@redhat.com>
Date: Thu, 11 Jun 2015 11:40:26 +0200
Subject: [PATCH 26/30] curl: Allow a cookie or cookies to be sent with
 http/https requests.

Message-id: <1434022828-13037-20-git-send-email-rjones@redhat.com>
Patchwork-id: 65854
O-Subject: [RHEL-7.2 qemu-kvm v3 PATCH 19/21] curl: Allow a cookie or cookies to be sent with http/https requests.
Bugzilla: 1226684
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>

From: "Richard W.M. Jones" <rjones@redhat.com>

In order to access VMware ESX efficiently, we need to send a session
cookie.  This patch is very simple and just allows you to send that
session cookie.  It punts on the question of how you get the session
cookie in the first place, but in practice you can just run a `curl'
command against the server and extract the cookie that way.

To use it, add file.cookie to the curl URL.  For example:

$ qemu-img info 'json: {
    "file.driver":"https",
    "file.url":"https://vcenter/folder/Windows%202003/Windows%202003-flat.vmdk?dcPath=Datacenter&dsName=datastore1",
    "file.sslverify":"off",
    "file.cookie":"vmware_soap_session=\"52a01262-bf93-ccce-d379-8dabb3e55560\""}'
image: [...]
file format: raw
virtual size: 8.0G (8589934592 bytes)
disk size: unavailable

Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Upstream-status: a94f83d94fdf907680f068f1be7ad13d1f697067

Note this intentionally omits the documentation changes in
'qemu-options.hx' from the upstream patch.

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 block/curl.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/block/curl.c b/block/curl.c
index 1f1df4f..ca881ee 100644
--- a/block/curl.c
+++ b/block/curl.c
@@ -73,6 +73,7 @@ static CURLMcode __curl_multi_socket_action(CURLM *multi_handle,
 #define CURL_BLOCK_OPT_READAHEAD "readahead"
 #define CURL_BLOCK_OPT_SSLVERIFY "sslverify"
 #define CURL_BLOCK_OPT_TIMEOUT "timeout"
+#define CURL_BLOCK_OPT_COOKIE    "cookie"
 
 struct BDRVCURLState;
 
@@ -112,6 +113,7 @@ typedef struct BDRVCURLState {
     size_t readahead_size;
     bool sslverify;
     int timeout;
+    char *cookie;
     bool accept_range;
 } BDRVCURLState;
 
@@ -382,6 +384,9 @@ static CURLState *curl_init_state(BDRVCURLState *s)
         curl_easy_setopt(state->curl, CURLOPT_URL, s->url);
         curl_easy_setopt(state->curl, CURLOPT_SSL_VERIFYPEER,
                          (long) s->sslverify);
+        if (s->cookie) {
+            curl_easy_setopt(state->curl, CURLOPT_COOKIE, s->cookie);
+        }
         curl_easy_setopt(state->curl, CURLOPT_TIMEOUT, s->timeout);
         curl_easy_setopt(state->curl, CURLOPT_WRITEFUNCTION,
                          (void *)curl_read_cb);
@@ -451,6 +456,11 @@ static QemuOptsList runtime_opts = {
             .type = QEMU_OPT_NUMBER,
             .help = "Curl timeout"
         },
+        {
+            .name = CURL_BLOCK_OPT_COOKIE,
+            .type = QEMU_OPT_STRING,
+            .help = "Pass the cookie or list of cookies with each request"
+        },
         { /* end of list */ }
     },
 };
@@ -463,6 +473,7 @@ static int curl_open(BlockDriverState *bs, QDict *options, int flags,
     QemuOpts *opts;
     Error *local_err = NULL;
     const char *file;
+    const char *cookie;
     double d;
 
     static int inited = 0;
@@ -488,6 +499,9 @@ static int curl_open(BlockDriverState *bs, QDict *options, int flags,
 
     s->sslverify = qemu_opt_get_bool(opts, CURL_BLOCK_OPT_SSLVERIFY, true);
 
+    cookie = qemu_opt_get(opts, CURL_BLOCK_OPT_COOKIE);
+    s->cookie = g_strdup(cookie);
+
     file = qemu_opt_get(opts, CURL_BLOCK_OPT_URL);
     if (file == NULL) {
         qerror_report(ERROR_CLASS_GENERIC_ERROR, "curl block driver requires "
@@ -556,6 +570,7 @@ out:
     curl_easy_cleanup(state->curl);
     state->curl = NULL;
 out_noclean:
+    g_free(s->cookie);
     g_free(s->url);
     qemu_opts_del(opts);
     return -EINVAL;
@@ -696,6 +711,7 @@ static void curl_close(BlockDriverState *bs)
     qemu_del_timer(s->timer);
     qemu_free_timer(s->timer);
 
+    g_free(s->cookie);
     g_free(s->url);
 }
 
-- 
1.8.3.1