From 46284dd1528d7bff53a4ef7c398648da91ea0842 Mon Sep 17 00:00:00 2001 From: Heiko Voigt Date: Tue, 19 Jun 2012 20:24:50 +0200 Subject: [PATCH] remove the impression of unexpectedness when access is denied If a server accessed through ssh is denying access git will currently issue the message "fatal: The remote end hung up unexpectedly" as the last line. This sounds as if something really ugly just happened. Since this is a quite typical situation in which users regularly get we do not say that if it happens at the beginning when reading the remote heads. If its in the very first beginning of reading the remote heads it is very likely an authentication error or a missing repository. If it happens later during reading the remote heads we still indicate that it happened during this initial contact phase. Signed-off-by: Heiko Voigt Signed-off-by: Junio C Hamano --- connect.c | 18 +++++++++++++++++- pkt-line.c | 32 ++++++++++++++++++++++++++------ pkt-line.h | 1 + t/t5512-ls-remote.sh | 16 +++++++--------- 4 files changed, 51 insertions(+), 16 deletions(-) diff --git a/connect.c b/connect.c index d2ce57f85..fe6e9214b 100644 --- a/connect.c +++ b/connect.c @@ -49,6 +49,16 @@ static void add_extra_have(struct extra_have_objects *extra, unsigned char *sha1 extra->nr++; } +static void die_initial_contact(int got_at_least_one_head) +{ + if (got_at_least_one_head) + die("The remote end hung up upon initial contact"); + else + die("Could not read from remote repository.\n\n" + "Please make sure you have the correct access rights\n" + "and the repository exists."); +} + /* * Read all the refs from the other end */ @@ -57,6 +67,8 @@ struct ref **get_remote_heads(int in, struct ref **list, unsigned int flags, struct extra_have_objects *extra_have) { + int got_at_least_one_head = 0; + *list = NULL; for (;;) { struct ref *ref; @@ -65,7 +77,10 @@ struct ref **get_remote_heads(int in, struct ref **list, char *name; int len, name_len; - len = packet_read_line(in, buffer, sizeof(buffer)); + len = packet_read(in, buffer, sizeof(buffer)); + if (len < 0) + die_initial_contact(got_at_least_one_head); + if (!len) break; if (buffer[len-1] == '\n') @@ -98,6 +113,7 @@ struct ref **get_remote_heads(int in, struct ref **list, hashcpy(ref->old_sha1, old_sha1); *list = ref; list = &ref->next; + got_at_least_one_head = 1; } return list; } diff --git a/pkt-line.c b/pkt-line.c index 5a04984ea..eaba15f12 100644 --- a/pkt-line.c +++ b/pkt-line.c @@ -135,13 +135,19 @@ void packet_buf_write(struct strbuf *buf, const char *fmt, ...) strbuf_add(buf, buffer, n); } -static void safe_read(int fd, void *buffer, unsigned size) +static int safe_read(int fd, void *buffer, unsigned size, int return_line_fail) { ssize_t ret = read_in_full(fd, buffer, size); if (ret < 0) die_errno("read error"); - else if (ret < size) + else if (ret < size) { + if (return_line_fail) + return -1; + die("The remote end hung up unexpectedly"); + } + + return ret; } static int packet_length(const char *linelen) @@ -169,12 +175,14 @@ static int packet_length(const char *linelen) return len; } -int packet_read_line(int fd, char *buffer, unsigned size) +static int packet_read_internal(int fd, char *buffer, unsigned size, int return_line_fail) { - int len; + int len, ret; char linelen[4]; - safe_read(fd, linelen, 4); + ret = safe_read(fd, linelen, 4, return_line_fail); + if (return_line_fail && ret < 0) + return ret; len = packet_length(linelen); if (len < 0) die("protocol error: bad line length character: %.4s", linelen); @@ -185,12 +193,24 @@ int packet_read_line(int fd, char *buffer, unsigned size) len -= 4; if (len >= size) die("protocol error: bad line length %d", len); - safe_read(fd, buffer, len); + ret = safe_read(fd, buffer, len, return_line_fail); + if (return_line_fail && ret < 0) + return ret; buffer[len] = 0; packet_trace(buffer, len, 0); return len; } +int packet_read(int fd, char *buffer, unsigned size) +{ + return packet_read_internal(fd, buffer, size, 1); +} + +int packet_read_line(int fd, char *buffer, unsigned size) +{ + return packet_read_internal(fd, buffer, size, 0); +} + int packet_get_line(struct strbuf *out, char **src_buf, size_t *src_len) { diff --git a/pkt-line.h b/pkt-line.h index 1e5dcfe87..8cfeb0c31 100644 --- a/pkt-line.h +++ b/pkt-line.h @@ -13,6 +13,7 @@ void packet_buf_flush(struct strbuf *buf); void packet_buf_write(struct strbuf *buf, const char *fmt, ...) __attribute__((format (printf, 2, 3))); int packet_read_line(int fd, char *buffer, unsigned size); +int packet_read(int fd, char *buffer, unsigned size); int packet_get_line(struct strbuf *out, char **src_buf, size_t *src_len); ssize_t safe_write(int, const void *, ssize_t); diff --git a/t/t5512-ls-remote.sh b/t/t5512-ls-remote.sh index 5c546c99a..2ab66d6e3 100755 --- a/t/t5512-ls-remote.sh +++ b/t/t5512-ls-remote.sh @@ -104,18 +104,16 @@ test_expect_success 'use branch..remote if possible' ' cat >exp <" to work; ls-remote, correctly, - # confuses for . Although ugly, this behaviour is akin - # to the confusion of refspecs for remotes by git-fetch and git-push, - # eg: - # - # $ git fetch branch - # - + # Do not expect "git ls-remote " to work; ls-remote needs + # if you want to feed , just like you cannot say + # fetch . # We could just as easily have used "master"; the "*" emphasizes its # role as a pattern. test_must_fail git ls-remote refs*master >actual 2>&1 && -- 2.26.2