summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorJeff King <peff@peff.net>2011-12-08 03:43:19 -0500
committerJunio C Hamano <gitster@pobox.com>2011-12-09 23:17:00 -0800
commit5914f2d057c259668695bccab8e9bec3a4bead53 (patch)
tree998cf2587a2906b486905d101826723ac2a476b0
parent69d61daec7a7915f6a664f32002fd9403e7f2a34 (diff)
downloadgit-5914f2d057c259668695bccab8e9bec3a4bead53.tar.gz
fetch: create status table using strbufjk/maint-fetch-status-table
When we fetch from a remote, we print a status table like: From url * [new branch] foo -> origin/foo We create this table in a static buffer using sprintf. If the remote refnames are long, they can overflow this buffer and smash the stack. Instead, let's use a strbuf to build the string. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--builtin/fetch.c87
1 files changed, 49 insertions, 38 deletions
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 93c99385a9..4f4af2a699 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -239,23 +239,23 @@ static int s_update_ref(const char *action,
static int update_local_ref(struct ref *ref,
const char *remote,
- char *display)
+ struct strbuf *display)
{
struct commit *current = NULL, *updated;
enum object_type type;
struct branch *current_branch = branch_get(NULL);
const char *pretty_ref = prettify_refname(ref->name);
- *display = 0;
type = sha1_object_info(ref->new_sha1, NULL);
if (type < 0)
die(_("object %s not found"), sha1_to_hex(ref->new_sha1));
if (!hashcmp(ref->old_sha1, ref->new_sha1)) {
if (verbosity > 0)
- sprintf(display, "= %-*s %-*s -> %s", TRANSPORT_SUMMARY_WIDTH,
- _("[up to date]"), REFCOL_WIDTH, remote,
- pretty_ref);
+ strbuf_addf(display, "= %-*s %-*s -> %s",
+ TRANSPORT_SUMMARY_WIDTH,
+ _("[up to date]"), REFCOL_WIDTH,
+ remote, pretty_ref);
return 0;
}
@@ -267,9 +267,10 @@ static int update_local_ref(struct ref *ref,
* If this is the head, and it's not okay to update
* the head, and the old value of the head isn't empty...
*/
- sprintf(display, _("! %-*s %-*s -> %s (can't fetch in current branch)"),
- TRANSPORT_SUMMARY_WIDTH, _("[rejected]"), REFCOL_WIDTH, remote,
- pretty_ref);
+ strbuf_addf(display,
+ _("! %-*s %-*s -> %s (can't fetch in current branch)"),
+ TRANSPORT_SUMMARY_WIDTH, _("[rejected]"),
+ REFCOL_WIDTH, remote, pretty_ref);
return 1;
}
@@ -277,9 +278,11 @@ static int update_local_ref(struct ref *ref,
!prefixcmp(ref->name, "refs/tags/")) {
int r;
r = s_update_ref("updating tag", ref, 0);
- sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : '-',
- TRANSPORT_SUMMARY_WIDTH, _("[tag update]"), REFCOL_WIDTH, remote,
- pretty_ref, r ? _(" (unable to update local ref)") : "");
+ strbuf_addf(display, "%c %-*s %-*s -> %s%s",
+ r ? '!' : '-',
+ TRANSPORT_SUMMARY_WIDTH, _("[tag update]"),
+ REFCOL_WIDTH, remote, pretty_ref,
+ r ? _(" (unable to update local ref)") : "");
return r;
}
@@ -302,9 +305,11 @@ static int update_local_ref(struct ref *ref,
}
r = s_update_ref(msg, ref, 0);
- sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : '*',
- TRANSPORT_SUMMARY_WIDTH, what, REFCOL_WIDTH, remote, pretty_ref,
- r ? _(" (unable to update local ref)") : "");
+ strbuf_addf(display, "%c %-*s %-*s -> %s%s",
+ r ? '!' : '*',
+ TRANSPORT_SUMMARY_WIDTH, what,
+ REFCOL_WIDTH, remote, pretty_ref,
+ r ? _(" (unable to update local ref)") : "");
return r;
}
@@ -318,9 +323,11 @@ static int update_local_ref(struct ref *ref,
(recurse_submodules != RECURSE_SUBMODULES_ON))
check_for_new_submodule_commits(ref->new_sha1);
r = s_update_ref("fast-forward", ref, 1);
- sprintf(display, "%c %-*s %-*s -> %s%s", r ? '!' : ' ',
- TRANSPORT_SUMMARY_WIDTH, quickref, REFCOL_WIDTH, remote,
- pretty_ref, r ? _(" (unable to update local ref)") : "");
+ strbuf_addf(display, "%c %-*s %-*s -> %s%s",
+ r ? '!' : ' ',
+ TRANSPORT_SUMMARY_WIDTH, quickref,
+ REFCOL_WIDTH, remote, pretty_ref,
+ r ? _(" (unable to update local ref)") : "");
return r;
} else if (force || ref->force) {
char quickref[84];
@@ -332,15 +339,17 @@ static int update_local_ref(struct ref *ref,
(recurse_submodules != RECURSE_SUBMODULES_ON))
check_for_new_submodule_commits(ref->new_sha1);
r = s_update_ref("forced-update", ref, 1);
- sprintf(display, "%c %-*s %-*s -> %s (%s)", r ? '!' : '+',
- TRANSPORT_SUMMARY_WIDTH, quickref, REFCOL_WIDTH, remote,
- pretty_ref,
- r ? _("unable to update local ref") : _("forced update"));
+ strbuf_addf(display, "%c %-*s %-*s -> %s (%s)",
+ r ? '!' : '+',
+ TRANSPORT_SUMMARY_WIDTH, quickref,
+ REFCOL_WIDTH, remote, pretty_ref,
+ r ? _("unable to update local ref") : _("forced update"));
return r;
} else {
- sprintf(display, "! %-*s %-*s -> %s %s",
- TRANSPORT_SUMMARY_WIDTH, _("[rejected]"), REFCOL_WIDTH, remote,
- pretty_ref, _("(non-fast-forward)"));
+ strbuf_addf(display, "! %-*s %-*s -> %s %s",
+ TRANSPORT_SUMMARY_WIDTH, _("[rejected]"),
+ REFCOL_WIDTH, remote, pretty_ref,
+ _("(non-fast-forward)"));
return 1;
}
}
@@ -350,8 +359,8 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
{
FILE *fp;
struct commit *commit;
- int url_len, i, note_len, shown_url = 0, rc = 0;
- char note[1024];
+ int url_len, i, shown_url = 0, rc = 0;
+ struct strbuf note = STRBUF_INIT;
const char *what, *kind;
struct ref *rm;
char *url, *filename = dry_run ? "/dev/null" : git_path("FETCH_HEAD");
@@ -407,19 +416,17 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
if (4 < i && !strncmp(".git", url + i - 3, 4))
url_len = i - 3;
- note_len = 0;
+ strbuf_reset(&note);
if (*what) {
if (*kind)
- note_len += sprintf(note + note_len, "%s ",
- kind);
- note_len += sprintf(note + note_len, "'%s' of ", what);
+ strbuf_addf(&note, "%s ", kind);
+ strbuf_addf(&note, "'%s' of ", what);
}
- note[note_len] = '\0';
fprintf(fp, "%s\t%s\t%s",
sha1_to_hex(commit ? commit->object.sha1 :
rm->old_sha1),
rm->merge ? "" : "not-for-merge",
- note);
+ note.buf);
for (i = 0; i < url_len; ++i)
if ('\n' == url[i])
fputs("\\n", fp);
@@ -427,21 +434,24 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
fputc(url[i], fp);
fputc('\n', fp);
+ strbuf_reset(&note);
if (ref) {
- rc |= update_local_ref(ref, what, note);
+ rc |= update_local_ref(ref, what, &note);
free(ref);
} else
- sprintf(note, "* %-*s %-*s -> FETCH_HEAD",
- TRANSPORT_SUMMARY_WIDTH, *kind ? kind : "branch",
- REFCOL_WIDTH, *what ? what : "HEAD");
- if (*note) {
+ strbuf_addf(&note, "* %-*s %-*s -> FETCH_HEAD",
+ TRANSPORT_SUMMARY_WIDTH,
+ *kind ? kind : "branch",
+ REFCOL_WIDTH,
+ *what ? what : "HEAD");
+ if (note.len) {
if (verbosity >= 0 && !shown_url) {
fprintf(stderr, _("From %.*s\n"),
url_len, url);
shown_url = 1;
}
if (verbosity >= 0)
- fprintf(stderr, " %s\n", note);
+ fprintf(stderr, " %s\n", note.buf);
}
}
free(url);
@@ -450,6 +460,7 @@ static int store_updated_refs(const char *raw_url, const char *remote_name,
error(_("some local refs could not be updated; try running\n"
" 'git remote prune %s' to remove any old, conflicting "
"branches"), remote_name);
+ strbuf_release(&note);
return rc;
}