From 9dbe7c3d7f4424cf0c27c2d4efabf72e58fa76b9 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ren=C3=A9=20Scharfe?= Date: Wed, 17 Apr 2013 20:33:35 +0200 Subject: [PATCH] pretty: handle broken commit headers gracefully Centralize the parsing of the date and time zone strings in the new helper function show_ident_date() and make sure it checks the pointers provided by split_ident_line() for NULL before use. Reported-by: Ivan Lyapunov Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- pretty.c | 45 ++++++++++++++++++++++++--------------------- t/t4212-log-corrupt.sh | 42 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 66 insertions(+), 21 deletions(-) create mode 100755 t/t4212-log-corrupt.sh diff --git a/pretty.c b/pretty.c index 41f04e669d..acbfceb5fe 100644 --- a/pretty.c +++ b/pretty.c @@ -393,6 +393,19 @@ static void add_rfc2047(struct strbuf *sb, const char *line, size_t len, strbuf_addstr(sb, "?="); } +static const char *show_ident_date(const struct ident_split *ident, + enum date_mode mode) +{ + unsigned long date = 0; + int tz = 0; + + if (ident->date_begin && ident->date_end) + date = strtoul(ident->date_begin, NULL, 10); + if (ident->tz_begin && ident->tz_end) + tz = strtol(ident->tz_begin, NULL, 10); + return show_date(date, tz, mode); +} + void pp_user_info(const struct pretty_print_context *pp, const char *what, struct strbuf *sb, const char *line, const char *encoding) @@ -401,12 +414,10 @@ void pp_user_info(const struct pretty_print_context *pp, struct strbuf mail; struct ident_split ident; int linelen; - char *line_end, *date; + char *line_end; const char *mailbuf, *namebuf; size_t namelen, maillen; int max_length = 78; /* per rfc2822 */ - unsigned long time; - int tz; if (pp->fmt == CMIT_FMT_ONELINE) return; @@ -438,8 +449,6 @@ void pp_user_info(const struct pretty_print_context *pp, strbuf_add(&name, namebuf, namelen); namelen = name.len + mail.len + 3; /* ' ' + '<' + '>' */ - time = strtoul(ident.date_begin, &date, 10); - tz = strtol(date, NULL, 10); if (pp->fmt == CMIT_FMT_EMAIL) { strbuf_addstr(sb, "From: "); @@ -472,13 +481,16 @@ void pp_user_info(const struct pretty_print_context *pp, switch (pp->fmt) { case CMIT_FMT_MEDIUM: - strbuf_addf(sb, "Date: %s\n", show_date(time, tz, pp->date_mode)); + strbuf_addf(sb, "Date: %s\n", + show_ident_date(&ident, pp->date_mode)); break; case CMIT_FMT_EMAIL: - strbuf_addf(sb, "Date: %s\n", show_date(time, tz, DATE_RFC2822)); + strbuf_addf(sb, "Date: %s\n", + show_ident_date(&ident, DATE_RFC2822)); break; case CMIT_FMT_FULLER: - strbuf_addf(sb, "%sDate: %s\n", what, show_date(time, tz, pp->date_mode)); + strbuf_addf(sb, "%sDate: %s\n", what, + show_ident_date(&ident, pp->date_mode)); break; default: /* notin' */ @@ -688,8 +700,6 @@ static size_t format_person_part(struct strbuf *sb, char part, { /* currently all placeholders have same length */ const int placeholder_len = 2; - int tz; - unsigned long date = 0; struct ident_split s; const char *name, *mail; size_t maillen, namelen; @@ -716,30 +726,23 @@ static size_t format_person_part(struct strbuf *sb, char part, if (!s.date_begin) goto skip; - date = strtoul(s.date_begin, NULL, 10); - if (part == 't') { /* date, UNIX timestamp */ strbuf_add(sb, s.date_begin, s.date_end - s.date_begin); return placeholder_len; } - /* parse tz */ - tz = strtoul(s.tz_begin + 1, NULL, 10); - if (*s.tz_begin == '-') - tz = -tz; - switch (part) { case 'd': /* date */ - strbuf_addstr(sb, show_date(date, tz, dmode)); + strbuf_addstr(sb, show_ident_date(&s, dmode)); return placeholder_len; case 'D': /* date, RFC2822 style */ - strbuf_addstr(sb, show_date(date, tz, DATE_RFC2822)); + strbuf_addstr(sb, show_ident_date(&s, DATE_RFC2822)); return placeholder_len; case 'r': /* date, relative */ - strbuf_addstr(sb, show_date(date, tz, DATE_RELATIVE)); + strbuf_addstr(sb, show_ident_date(&s, DATE_RELATIVE)); return placeholder_len; case 'i': /* date, ISO 8601 */ - strbuf_addstr(sb, show_date(date, tz, DATE_ISO8601)); + strbuf_addstr(sb, show_ident_date(&s, DATE_ISO8601)); return placeholder_len; } diff --git a/t/t4212-log-corrupt.sh b/t/t4212-log-corrupt.sh new file mode 100755 index 0000000000..ec5099b83d --- /dev/null +++ b/t/t4212-log-corrupt.sh @@ -0,0 +1,42 @@ +#!/bin/sh + +test_description='git log with invalid commit headers' + +. ./test-lib.sh + +test_expect_success 'setup' ' + test_commit foo && + + git cat-file commit HEAD | + sed "/^author /s/>/>-<>/" >broken_email.commit && + git hash-object -w -t commit broken_email.commit >broken_email.hash && + git update-ref refs/heads/broken_email $(cat broken_email.hash) +' + +test_expect_success 'git log with broken author email' ' + { + echo commit $(cat broken_email.hash) + echo "Author: A U Thor " + echo "Date: Thu Jan 1 00:00:00 1970 +0000" + echo + echo " foo" + } >expect.out && + : >expect.err && + + git log broken_email >actual.out 2>actual.err && + + test_cmp expect.out actual.out && + test_cmp expect.err actual.err +' + +test_expect_success 'git log --format with broken author email' ' + echo "A U Thor+author@example.com+" >expect.out && + : >expect.err && + + git log --format="%an+%ae+%ad" broken_email >actual.out 2>actual.err && + + test_cmp expect.out actual.out && + test_cmp expect.err actual.err +' + +test_done -- 2.11.4.GIT