From a94f83d94fdf907680f068f1be7ad13d1f697067 Mon Sep 17 00:00:00 2001 From: "Richard W.M. Jones" Date: Fri, 29 Aug 2014 16:03:12 +0100 Subject: curl: Allow a cookie or cookies to be sent with http/https requests. 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 Signed-off-by: Stefan Hajnoczi --- block/curl.c | 16 ++++++++++++++++ qemu-options.hx | 5 +++++ 2 files changed, 21 insertions(+) diff --git a/block/curl.c b/block/curl.c index 2698ae31e8..9051bc05c1 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; AioContext *aio_context; } BDRVCURLState; @@ -385,6 +387,9 @@ 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); @@ -497,6 +502,11 @@ 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 */ } }, }; @@ -509,6 +519,7 @@ 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; @@ -538,6 +549,9 @@ 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) { error_setg(errp, "curl block driver requires an 'url' option"); @@ -593,6 +607,7 @@ 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; @@ -695,6 +710,7 @@ static void curl_close(BlockDriverState *bs) DPRINTF("CURL: Close\n"); curl_detach_aio_context(bs); + g_free(s->cookie); g_free(s->url); } diff --git a/qemu-options.hx b/qemu-options.hx index 52d56f4a1c..5479cf54f4 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -2352,6 +2352,11 @@ multiple of 512 bytes. It defaults to 256k. Whether to verify the remote server's certificate when connecting over SSL. It can have the value 'on' or 'off'. It defaults to 'on'. +@item cookie +Send this cookie (it can also be a list of cookies separated by ';') with +each outgoing request. Only supported when using protocols such as HTTP +which support cookies, otherwise ignored. + @item timeout Set the timeout in seconds of the CURL connection. This timeout is the time that CURL waits for a response from the remote server to get the size of the -- cgit v1.2.3