From: Jeff King <peff@peff.net>
To: git@vger.kernel.org
Subject: [PATCH 37/68] remote-ext: simplify git pkt-line generation
Date: Thu, 24 Sep 2015 17:07:27 -0400 [thread overview]
Message-ID: <20150924210727.GH30946@sigill.intra.peff.net> (raw)
In-Reply-To: <20150924210225.GA23624@sigill.intra.peff.net>
We format a pkt-line into a heap buffer, which requires
manual computation of the required size, and uses some bare
sprintf calls. We could use a strbuf instead, which would
take care of the computation for us. But it's even easier
still to use packet_write(). Besides handling the formatting
and writing for us, it fixes two things:
1. Our manual max-size check used 0xFFFF, while technically
LARGE_PACKET_MAX is slightly smaller than this.
2. Our packet will now be output as part of
GIT_TRACE_PACKET debugging.
Unfortunately packet_write() does not let us build up the
buffer progressively, so we do have to repeat ourselves a
little depending on the "vhost" setting, but the end result
is still far more readable than the original.
Since there were no tests covering this feature at all,
we'll add a few into t5802.
Signed-off-by: Jeff King <peff@peff.net>
---
builtin/remote-ext.c | 34 +++++-----------------------------
t/t5802-connect-helper.sh | 28 ++++++++++++++++++++++++++++
2 files changed, 33 insertions(+), 29 deletions(-)
diff --git a/builtin/remote-ext.c b/builtin/remote-ext.c
index 3b8c22c..e3cd25d 100644
--- a/builtin/remote-ext.c
+++ b/builtin/remote-ext.c
@@ -1,6 +1,7 @@
#include "builtin.h"
#include "transport.h"
#include "run-command.h"
+#include "pkt-line.h"
/*
* URL syntax:
@@ -142,36 +143,11 @@ static const char **parse_argv(const char *arg, const char *service)
static void send_git_request(int stdin_fd, const char *serv, const char *repo,
const char *vhost)
{
- size_t bufferspace;
- size_t wpos = 0;
- char *buffer;
-
- /*
- * Request needs 12 bytes extra if there is vhost (xxxx \0host=\0) and
- * 6 bytes extra (xxxx \0) if there is no vhost.
- */
- if (vhost)
- bufferspace = strlen(serv) + strlen(repo) + strlen(vhost) + 12;
+ if (!vhost)
+ packet_write(stdin_fd, "%s %s%c", serv, repo, 0);
else
- bufferspace = strlen(serv) + strlen(repo) + 6;
-
- if (bufferspace > 0xFFFF)
- die("Request too large to send");
- buffer = xmalloc(bufferspace);
-
- /* Make the packet. */
- wpos = sprintf(buffer, "%04x%s %s%c", (unsigned)bufferspace,
- serv, repo, 0);
-
- /* Add vhost if any. */
- if (vhost)
- sprintf(buffer + wpos, "host=%s%c", vhost, 0);
-
- /* Send the request */
- if (write_in_full(stdin_fd, buffer, bufferspace) < 0)
- die_errno("Failed to send request");
-
- free(buffer);
+ packet_write(stdin_fd, "%s %s%chost=%s%c", serv, repo, 0,
+ vhost, 0);
}
static int run_child(const char *arg, const char *service)
diff --git a/t/t5802-connect-helper.sh b/t/t5802-connect-helper.sh
index 878faf2..b7a7f9d 100755
--- a/t/t5802-connect-helper.sh
+++ b/t/t5802-connect-helper.sh
@@ -69,4 +69,32 @@ test_expect_success 'update backfilled tag without primary transfer' '
test_cmp expect actual
'
+
+test_expect_success 'set up fake git-daemon' '
+ mkdir remote &&
+ git init --bare remote/one.git &&
+ mkdir remote/host &&
+ git init --bare remote/host/two.git &&
+ write_script fake-daemon <<-\EOF &&
+ git daemon --inetd \
+ --informative-errors \
+ --export-all \
+ --base-path="$TRASH_DIRECTORY/remote" \
+ --interpolated-path="$TRASH_DIRECTORY/remote/%H%D" \
+ "$TRASH_DIRECTORY/remote"
+ EOF
+ export TRASH_DIRECTORY &&
+ PATH=$TRASH_DIRECTORY:$PATH
+'
+
+test_expect_success 'ext command can connect to git daemon (no vhost)' '
+ rm -rf dst &&
+ git clone "ext::fake-daemon %G/one.git" dst
+'
+
+test_expect_success 'ext command can connect to git daemon (vhost)' '
+ rm -rf dst &&
+ git clone "ext::fake-daemon %G/two.git %Vhost" dst
+'
+
test_done
--
2.6.0.rc3.454.g204ad51
next prev parent reply other threads:[~2015-09-24 21:10 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-24 21:02 [PATCH v2 0/68] war on sprintf Jeff King
2015-09-24 21:02 ` [PATCH 01/68] show-branch: avoid segfault with --reflog of unborn branch Jeff King
2015-09-24 21:03 ` [PATCH 02/68] mailsplit: fix FILE* leak in split_maildir Jeff King
2015-09-24 21:03 ` [PATCH 03/68] archive-tar: fix minor indentation violation Jeff King
2015-09-24 21:05 ` [PATCH 04/68] fsck: don't fsck alternates for connectivity-only check Jeff King
2015-09-24 21:05 ` [PATCH 05/68] add xsnprintf helper function Jeff King
2015-09-24 21:05 ` [PATCH 06/68] add git_path_buf " Jeff King
2015-09-24 21:05 ` [PATCH 07/68] strbuf: make strbuf_complete_line more generic Jeff King
2015-09-24 21:05 ` [PATCH 08/68] add reentrant variants of sha1_to_hex and find_unique_abbrev Jeff King
2015-09-24 21:05 ` [PATCH 09/68] fsck: use strbuf to generate alternate directories Jeff King
2015-09-24 21:05 ` [PATCH 10/68] mailsplit: make PATH_MAX buffers dynamic Jeff King
2015-09-24 21:05 ` [PATCH 11/68] trace: use strbuf for quote_crnl output Jeff King
2015-09-24 21:05 ` [PATCH 12/68] progress: store throughput display in a strbuf Jeff King
2015-09-24 21:06 ` [PATCH 13/68] test-dump-cache-tree: avoid overflow of cache-tree name Jeff King
2015-09-24 21:06 ` [PATCH 14/68] compat/inet_ntop: fix off-by-one in inet_ntop4 Jeff King
2015-09-24 21:06 ` [PATCH 15/68] convert trivial sprintf / strcpy calls to xsnprintf Jeff King
2015-09-24 21:06 ` [PATCH 16/68] archive-tar: use xsnprintf for trivial formatting Jeff King
2015-09-24 21:06 ` [PATCH 17/68] use xsnprintf for generating git object headers Jeff King
2015-09-24 21:06 ` [PATCH 18/68] find_short_object_filename: convert sprintf to xsnprintf Jeff King
2015-09-24 21:06 ` [PATCH 19/68] stop_progress_msg: " Jeff King
2015-09-24 21:06 ` [PATCH 20/68] compat/hstrerror: convert sprintf to snprintf Jeff King
2015-09-24 21:06 ` [PATCH 21/68] grep: use xsnprintf to format failure message Jeff King
2015-09-24 21:06 ` [PATCH 22/68] entry.c: convert strcpy to xsnprintf Jeff King
2015-09-24 21:06 ` [PATCH 23/68] add_packed_git: convert strcpy into xsnprintf Jeff King
2015-09-24 21:06 ` [PATCH 24/68] http-push: replace strcat with xsnprintf Jeff King
2015-09-24 21:07 ` [PATCH 25/68] receive-pack: convert strncpy to xsnprintf Jeff King
2015-09-24 21:07 ` [PATCH 26/68] replace trivial malloc + sprintf / strcpy calls with xstrfmt Jeff King
2015-09-24 21:07 ` [PATCH 27/68] config: use xstrfmt in normalize_value Jeff King
2015-09-24 21:07 ` [PATCH 28/68] fetch: replace static buffer with xstrfmt Jeff King
2015-09-24 21:07 ` [PATCH 29/68] use strip_suffix and xstrfmt to replace suffix Jeff King
2015-09-24 21:07 ` [PATCH 30/68] ref-filter: drop sprintf and strcpy calls Jeff King
2015-09-24 21:07 ` [PATCH 31/68] help: drop prepend function in favor of xstrfmt Jeff King
2015-09-24 21:07 ` [PATCH 32/68] mailmap: replace strcpy with xstrdup Jeff King
2015-09-24 21:07 ` [PATCH 33/68] read_branches_file: simplify string handling Jeff King
2015-09-24 21:07 ` [PATCH 34/68] read_remotes_file: " Jeff King
2015-09-24 21:07 ` [PATCH 35/68] resolve_ref: use strbufs for internal buffers Jeff King
2015-09-24 21:07 ` [PATCH 36/68] upload-archive: convert sprintf to strbuf Jeff King
2015-09-24 21:07 ` Jeff King [this message]
2015-09-24 21:07 ` [PATCH 38/68] http-push: use strbuf instead of fwrite_buffer Jeff King
2015-09-24 21:07 ` [PATCH 39/68] http-walker: store url in a strbuf Jeff King
2015-09-24 21:07 ` [PATCH 40/68] sha1_get_pack_name: use " Jeff King
2015-09-24 21:07 ` [PATCH 41/68] init: use strbufs to store paths Jeff King
2015-09-29 23:50 ` Michael Blume
2015-09-30 0:23 ` Jeff King
2015-09-30 20:00 ` Junio C Hamano
2015-10-01 2:51 ` Jeff King
2015-10-02 6:00 ` Torsten Bögershausen
2015-10-02 15:33 ` Jeff King
2015-10-03 5:58 ` Torsten Bögershausen
2015-10-03 16:54 ` Junio C Hamano
2015-10-03 21:12 ` Torsten Bögershausen
2015-10-04 3:37 ` Jeff King
2015-10-04 6:31 ` Torsten Bögershausen
2015-10-05 3:41 ` Jeff King
2015-10-05 3:43 ` [PATCH 1/3] precompose_utf8: drop unused variable Jeff King
2015-10-06 3:24 ` Torsten Bögershausen
2015-10-05 3:45 ` [PATCH 2/3] probe_utf8_pathname_composition: use internal strbuf Jeff King
2015-10-05 3:46 ` [PATCH 3/3] init: use strbufs to store paths Jeff King
2015-09-24 21:07 ` [PATCH 42/68] apply: convert root string to strbuf Jeff King
2015-09-24 21:07 ` [PATCH 43/68] transport: use strbufs for status table "quickref" strings Jeff King
2015-09-24 21:07 ` [PATCH 44/68] merge-recursive: convert malloc / strcpy to strbuf Jeff King
2015-09-24 21:07 ` [PATCH 45/68] enter_repo: convert fixed-size buffers to strbufs Jeff King
2015-09-24 21:07 ` [PATCH 46/68] remove_leading_path: use a strbuf for internal storage Jeff King
2015-09-24 21:07 ` [PATCH 47/68] write_loose_object: convert to strbuf Jeff King
2015-09-24 21:07 ` [PATCH 48/68] diagnose_invalid_index_path: use strbuf to avoid strcpy/strcat Jeff King
2015-09-24 21:07 ` [PATCH 49/68] fetch-pack: use argv_array for index-pack / unpack-objects Jeff King
2015-09-24 21:07 ` [PATCH 50/68] http-push: use an argv_array for setup_revisions Jeff King
2015-09-24 21:07 ` [PATCH 51/68] stat_tracking_info: convert to argv_array Jeff King
2015-09-24 21:08 ` [PATCH 52/68] daemon: use cld->env_array when re-spawning Jeff King
2015-09-24 21:08 ` [PATCH 53/68] use sha1_to_hex_r() instead of strcpy Jeff King
2015-09-24 21:08 ` [PATCH 54/68] drop strcpy in favor of raw sha1_to_hex Jeff King
2015-09-24 23:42 ` Eric Sunshine
2015-09-25 1:36 ` Jeff King
2015-09-24 21:08 ` [PATCH 55/68] color: add overflow checks for parsing colors Jeff King
2015-09-24 21:08 ` [PATCH 56/68] use alloc_ref rather than hand-allocating "struct ref" Jeff King
2015-09-24 21:08 ` [PATCH 57/68] avoid sprintf and strcpy with flex arrays Jeff King
2015-09-24 21:08 ` [PATCH 58/68] receive-pack: simplify keep_arg computation Jeff King
2015-09-24 21:08 ` [PATCH 59/68] help: clean up kfmclient munging Jeff King
2015-09-24 21:08 ` [PATCH 60/68] prefer memcpy to strcpy Jeff King
2015-09-27 11:19 ` René Scharfe
2015-09-27 13:06 ` Torsten Bögershausen
2015-09-27 13:13 ` René Scharfe
2015-09-27 13:24 ` René Scharfe
2015-09-28 7:09 ` Rasmus Villemoes
2015-09-24 21:08 ` [PATCH 61/68] color: add color_set helper for copying raw colors Jeff King
2015-09-24 21:08 ` [PATCH 62/68] notes: document length of fanout path with a constant Jeff King
2015-09-24 21:08 ` [PATCH 63/68] convert strncpy to memcpy Jeff King
2015-09-24 21:08 ` [PATCH 64/68] fsck: drop inode-sorting code Jeff King
2015-09-24 21:08 ` [PATCH 65/68] Makefile: drop D_INO_IN_DIRENT build knob Jeff King
2015-09-24 21:08 ` [PATCH 66/68] fsck: use for_each_loose_file_in_objdir Jeff King
2015-09-26 3:36 ` Jeff King
2015-09-24 21:08 ` [PATCH 67/68] use strbuf_complete to conditionally append slash Jeff King
2015-09-24 21:08 ` [PATCH 68/68] name-rev: use strip_suffix to avoid magic numbers Jeff King
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