diff options
Diffstat (limited to 'src/assuan-pipe-server.c')
| -rw-r--r-- | src/assuan-pipe-server.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/src/assuan-pipe-server.c b/src/assuan-pipe-server.c index 509fc12..18f8cc5 100644 --- a/src/assuan-pipe-server.c +++ b/src/assuan-pipe-server.c @@ -22,6 +22,8 @@ #include <config.h> #include <stdlib.h> #include <stdio.h> +#include <sys/types.h> +#include <sys/stat.h> #include <unistd.h> #ifdef HAVE_W32_SYSTEM #include <windows.h> @@ -89,6 +91,18 @@ _assuan_new_context (ASSUAN_CONTEXT *r_ctx) } +/* Returns true if atoi(S) denotes a valid socket. */ +static int +is_valid_socket (const char *s) +{ + struct stat buf; + + if ( fstat (atoi (s), &buf ) ) + return 0; + return S_ISSOCK (buf.st_mode); +} + + int assuan_init_pipe_server (ASSUAN_CONTEXT *r_ctx, int filedes[2]) { @@ -112,7 +126,7 @@ assuan_init_pipe_server (ASSUAN_CONTEXT *r_ctx, int filedes[2]) ctx->outbound.fd = _get_osfhandle (filedes[1]); #else s = getenv ("_assuan_connection_fd"); - if (!filedes && s && *s && atoi (s) >= 0 ) + if (s && *s && is_valid_socket (s) ) { /* Well, we are called with an bi-directional file descriptor. Prepare for using sendmsg/recvmsg. In this @@ -121,7 +135,7 @@ assuan_init_pipe_server (ASSUAN_CONTEXT *r_ctx, int filedes[2]) _assuan_init_uds_io (ctx); ctx->deinit_handler = _assuan_uds_deinit; } - else if (filedes) + else if (filedes && filedes[0] != -1 && filedes[1] != -1 ) { /* Standard pipe server. */ ctx->inbound.fd = filedes[0]; |