static int post_rpc(struct rpc_state *rpc)
{
struct active_request_slot *slot;
struct curl_slist *headers = NULL;
int use_gzip = rpc->gzip_request;
char *gzip_body = NULL;
int err, large_request = 0;
/* Try to load the entire request, if we can fit it into the
* allocated buffer space we can use HTTP/1.0 and avoid the
* chunked encoding mess.
*/
while (1) {
size_t left = rpc->alloc - rpc->len;
char *buf = rpc->buf + rpc->len;
int n;
if (left < LARGE_PACKET_MAX) {
large_request = 1;
use_gzip = 0;
break;
}
n = packet_read_line(rpc->out, buf, left);
if (!n)
break;
rpc->len += n;
}
if (large_request) {
err = probe_rpc(rpc);
if (err)
return err;
}
slot = get_active_slot();
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
headers = curl_slist_append(headers, rpc->hdr_content_type);
headers = curl_slist_append(headers, rpc->hdr_accept);
headers = curl_slist_append(headers, "Expect:");
if (large_request) {
/* The request body is large and the size cannot be predicted.
* We must use chunked encoding to send it.
*/
headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
rpc->initial_buffer = 1;
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
#ifndef NO_CURL_IOCTL
curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
#endif
if (options.verbosity > 1) {
fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
fflush(stderr);
}
} else if (use_gzip && 1024 < rpc->len) {
/* The client backend isn't giving us compressed data so
* we can try to deflate it ourselves, this may save on.
* the transfer time.
*/
size_t size;
git_zstream stream;
int ret;
memset(&stream, 0, sizeof(stream));
git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
size = git_deflate_bound(&stream, rpc->len);
gzip_body = xmalloc(size);
stream.next_in = (unsigned char *)rpc->buf;
stream.avail_in = rpc->len;
stream.next_out = (unsigned char *)gzip_body;
stream.avail_out = size;
ret = git_deflate(&stream, Z_FINISH);
if (ret != Z_STREAM_END)
die("cannot deflate request; zlib deflate error %d", ret);
ret = git_deflate_end_gently(&stream);
if (ret != Z_OK)
die("cannot deflate request; zlib end error %d", ret);
size = stream.total_out;
headers = curl_slist_append(headers, "Content-Encoding: gzip");
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, size);
if (options.verbosity > 1) {
fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
rpc->service_name,
(unsigned long)rpc->len, (unsigned long)size);
fflush(stderr);
}
} else {
/* We know the complete request size in advance, use the
* more normal Content-Length approach.
*/
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, rpc->len);
if (options.verbosity > 1) {
fprintf(stderr, "POST %s (%lu bytes)\n",
rpc->service_name, (unsigned long)rpc->len);
fflush(stderr);
}
}
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
err = run_slot(slot);
curl_slist_free_all(headers);
free(gzip_body);
return err;
}
static int post_rpc(struct rpc_state *rpc)
{
struct active_request_slot *slot;
struct curl_slist *headers = http_copy_default_headers();
int use_gzip = rpc->gzip_request;
char *gzip_body = NULL;
size_t gzip_size = 0;
int err, large_request = 0;
int needs_100_continue = 0;
/* Try to load the entire request, if we can fit it into the
* allocated buffer space we can use HTTP/1.0 and avoid the
* chunked encoding mess.
*/
while (1) {
size_t left = rpc->alloc - rpc->len;
char *buf = rpc->buf + rpc->len;
int n;
if (left < LARGE_PACKET_MAX) {
large_request = 1;
use_gzip = 0;
break;
}
n = packet_read(rpc->out, NULL, NULL, buf, left, 0);
if (!n)
break;
rpc->len += n;
}
if (large_request) {
struct slot_results results;
do {
err = probe_rpc(rpc, &results);
if (err == HTTP_REAUTH)
credential_fill(&http_auth);
} while (err == HTTP_REAUTH);
if (err != HTTP_OK)
return -1;
if (results.auth_avail & CURLAUTH_GSSNEGOTIATE)
needs_100_continue = 1;
}
headers = curl_slist_append(headers, rpc->hdr_content_type);
headers = curl_slist_append(headers, rpc->hdr_accept);
headers = curl_slist_append(headers, needs_100_continue ?
"Expect: 100-continue" : "Expect:");
retry:
slot = get_active_slot();
curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip");
if (large_request) {
/* The request body is large and the size cannot be predicted.
* We must use chunked encoding to send it.
*/
headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
rpc->initial_buffer = 1;
curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
#ifndef NO_CURL_IOCTL
curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
#endif
if (options.verbosity > 1) {
fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
fflush(stderr);
}
} else if (gzip_body) {
/*
* If we are looping to retry authentication, then the previous
* run will have set up the headers and gzip buffer already,
* and we just need to send it.
*/
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, gzip_size);
} else if (use_gzip && 1024 < rpc->len) {
/* The client backend isn't giving us compressed data so
* we can try to deflate it ourselves, this may save on.
* the transfer time.
*/
git_zstream stream;
int ret;
git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
gzip_size = git_deflate_bound(&stream, rpc->len);
gzip_body = xmalloc(gzip_size);
stream.next_in = (unsigned char *)rpc->buf;
stream.avail_in = rpc->len;
stream.next_out = (unsigned char *)gzip_body;
stream.avail_out = gzip_size;
ret = git_deflate(&stream, Z_FINISH);
if (ret != Z_STREAM_END)
die("cannot deflate request; zlib deflate error %d", ret);
ret = git_deflate_end_gently(&stream);
if (ret != Z_OK)
die("cannot deflate request; zlib end error %d", ret);
gzip_size = stream.total_out;
headers = curl_slist_append(headers, "Content-Encoding: gzip");
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, gzip_size);
if (options.verbosity > 1) {
fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
rpc->service_name,
(unsigned long)rpc->len, (unsigned long)gzip_size);
fflush(stderr);
}
} else {
/* We know the complete request size in advance, use the
* more normal Content-Length approach.
*/
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, rpc->len);
if (options.verbosity > 1) {
fprintf(stderr, "POST %s (%lu bytes)\n",
rpc->service_name, (unsigned long)rpc->len);
fflush(stderr);
}
}
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
curl_easy_setopt(slot->curl, CURLOPT_FILE, rpc);
err = run_slot(slot, NULL);
if (err == HTTP_REAUTH && !large_request) {
credential_fill(&http_auth);
goto retry;
}
if (err != HTTP_OK)
err = -1;
curl_slist_free_all(headers);
free(gzip_body);
return err;
}