[PATCH] daemon: parse_host_and_port SIGSEGV if port is specified

[PATCH] daemon: parse_host_and_port SIGSEGV if port is specified

[imre.deak]

From: Imre Deak <imre.deak@gmail.com>

This typo will lead to git-daemon dying any time the connect
string includes a port after the host= attribute. This can lead
for example to one of the following error messages on the client
side when someone tries git clone git://...:<port>.

When the daemon is running on localhost:
  fatal: The remote end hung up unexpectedly

or when the daemon is connected through an ssh tunnel:
  fatal: protocol error: bad line length character: erro

In the latter case 'erro' comes from the daemon's reply:
  error: git-daemon died of signal 11

Signed-off-by: Imre Deak <imre.deak@gmail.com>
---
 daemon.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/daemon.c b/daemon.c
index 3769b6f..7d9e1c0 100644
--- a/daemon.c
+++ b/daemon.c
@@ -420,7 +420,7 @@ static void parse_host_and_port(char *hostport, char **host,
 		*host = hostport;
 		*port = strrchr(hostport, ':');
 		if (*port) {
-			*port = '\0';
+			**port = '\0';
 			++*port;
 		}
 	}
-- 
1.7.0.2

Re: [PATCH] daemon: parse_host_and_port SIGSEGV if port is specified

[Junio C Hamano]

imre.deak@nokia.com writes:

> From: Imre Deak <imre.deak@gmail.com>
>
> This typo will lead to git-daemon dying any time the connect
> string includes a port after the host= attribute. This can lead
> for example to one of the following error messages on the client
> side when someone tries git clone git://...:<port>.
>
> When the daemon is running on localhost:
>   fatal: The remote end hung up unexpectedly
>
> or when the daemon is connected through an ssh tunnel:
>   fatal: protocol error: bad line length character: erro
>
> In the latter case 'erro' comes from the daemon's reply:
>   error: git-daemon died of signal 11
>
> Signed-off-by: Imre Deak <imre.deak@gmail.com>
> ---

I wonder why I have this feeling that I've seen this patch before...

Thanks.

>  daemon.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/daemon.c b/daemon.c
> index 3769b6f..7d9e1c0 100644
> --- a/daemon.c
> +++ b/daemon.c
> @@ -420,7 +420,7 @@ static void parse_host_and_port(char *hostport, char **host,
>  		*host = hostport;
>  		*port = strrchr(hostport, ':');
>  		if (*port) {
> -			*port = '\0';
> +			**port = '\0';
>  			++*port;
>  		}
>  	}
> -- 
> 1.7.0.2