initial commit

git-svn-id: file:///home/lennart/svn/public/bidilink/trunk@3 9cde1c1d-e4d0-0310-8a68-bf217395ea82

1 files changed, 69 insertions, 0 deletions

diff --git a/src/server-tty.c b/src/server-tty.c
new file mode 100644
index 0000000..d3f36b1
--- /dev/null
+++ b/src/server-tty.c
@@ -0,0 +1,69 @@
+#define _GNU_SOURCE
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "server-tty.h"
+
+static void destruct(struct stream *s) {
+    assert(s && s->user);
+    if (unlink((char*) s->user) < 0)
+        fprintf(stderr, "WARNING: unlink(): %s\n", strerror(errno));
+    free(s->user);
+}
+
+struct stream* stream_server_tty(const char *args) {
+    struct stream *s = NULL;
+    int fd = -1;
+    char *n;
+    
+    s = malloc(sizeof(struct stream));
+    assert(s);
+    memset(s, 0, sizeof(struct stream));
+
+    if ((fd = open("/dev/ptmx", O_RDWR|O_NOCTTY)) < 0) {
+        fprintf(stderr, "open('/dev/ptmx', O_RDWR|O_NOCTTY): %s\n", strerror(errno));
+        goto fail;
+    }
+
+    if (grantpt(fd) < 0) {
+        fprintf(stderr, "grantpt(): %s\n", strerror(errno));
+        goto fail;
+    }
+
+    if (unlockpt(fd) < 0) {
+        fprintf(stderr, "grantpt(): %s\n", strerror(errno));
+        goto fail;
+    }
+
+    if (!(n = ptsname(fd)) < 0) {
+        fprintf(stderr, "ptsname(): %s\n", strerror(errno));
+        goto fail;
+    }
+
+    if (args) {
+        if (symlink(n, args) < 0) {
+            fprintf(stderr, "symlink('%s', '%s'): %s\n", n, args, strerror(errno));
+            goto fail;
+        }
+    } else
+        fprintf(stderr, "Allocated pseudo tty '%s'.\n", n);
+    
+    s->user = strdup(args);
+    s->destruct = destruct;
+    s->input_fd = s->output_fd = fd;
+    return s;        
+
+fail:
+    free(s);
+    if (fd >= 0)
+        close(fd);
+
+    return NULL;
+    
+}