Index: ossp-pkg/l2/l2_ch_fd.c
RCS File: /v/ossp/cvs/ossp-pkg/l2/l2_ch_fd.c,v
rcsdiff -q -kk '-r1.7' '-r1.8' -u '/v/ossp/cvs/ossp-pkg/l2/l2_ch_fd.c,v' 2>/dev/null
--- l2_ch_fd.c	2001/09/05 07:47:12	1.7
+++ l2_ch_fd.c	2001/09/06 19:27:02	1.8
@@ -24,47 +24,127 @@
 **  OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 **  SUCH DAMAGE.
 **
-**  l2_ch_syslog.c: filedescriptor channel implementation
+**  l2_ch_fd.c: file descriptor channel implementation
 */
 
 #include "l2.h"
+#include <unistd.h>
 
+/* declare private channel configuration */
+typedef struct {
+    int fd;
+} l2_ch_file_t;
+
+/* create channel */
 static l2_result_t hook_create(l2_context_t *ctx, l2_channel_t *ch)
 {
+    l2_ch_file_t *cfg;
+
+    /* allocate private channel configuration */
+    if ((cfg = (l2_ch_file_t *)malloc(sizeof(l2_ch_file_t))) == NULL)
+        return L2_ERR_MEM;
+
+    /* initialize configuration with reasonable defaults */
+    cfg->fd = -1; 
+
+    /* link private channel configuration into channel context */
+    ctx->vp = cfg;
+
     return L2_OK;
 }
 
+/* configure channel */
 static l2_result_t hook_configure(l2_context_t *ctx, l2_channel_t *ch, const char *fmt, va_list ap)
 {
-    return L2_OK;
+    l2_ch_file_t *cfg;
+    l2_param_t pa[1]; 
+    l2_result_t rv;
+
+    /* parameter checks */
+    if ((cfg = (l2_ch_file_t *)ctx->vp) == NULL)
+        return L2_ERR_ARG;
+
+    /* feed and call generic parameter parsing engine */
+    L2_PARAM_SET(pa[0], filedescriptor, INT, &cfg->fd);
+    L2_PARAM_END(pa[1]);
+    rv = l2_util_setparams(pa, fmt, ap);
+
+    return rv;
 }
 
+/* open channel */
 static l2_result_t hook_open(l2_context_t *ctx, l2_channel_t *ch)
 {
+    l2_ch_file_t *cfg;
+    int mode;
+
+    /* parameter checks */
+    if ((cfg = (l2_ch_file_t *)ctx->vp) == NULL)
+        return L2_ERR_ARG;
+    if ((cfg->fd == -1))
+        return L2_ERR_ARG;
+
     return L2_OK;
 }
 
+/* write to channel */
 static l2_result_t hook_write(l2_context_t *ctx, l2_channel_t *ch, 
                       const char *buf, size_t buf_size)
 {
+    l2_ch_file_t *cfg;
+
+    /* parameter checks */
+    if ((cfg = (l2_ch_file_t *)ctx->vp) == NULL)
+        return L2_ERR_ARG;
+    if (cfg->fd == -1)
+        return L2_ERR_ARG;
+
+    /* write message to channel file */
+    if (write(cfg->fd, buf, buf_size) == -1)
+        return L2_ERR_SYS;
+
     return L2_OK;
 }
 
+/* flush channel */
 static l2_result_t hook_flush(l2_context_t *ctx, l2_channel_t *ch)
 {
+    /* NOP for this channel, because Unix I/O files are unbuffered! */
+
     return L2_OK;
 }
 
+/* close channel */
 static l2_result_t hook_close(l2_context_t *ctx, l2_channel_t *ch)
 {
+    l2_ch_file_t *cfg;
+
+    /* parameter checks */
+    if ((cfg = (l2_ch_file_t *)ctx->vp) == NULL)
+        return L2_ERR_ARG;
+    if (cfg->fd == -1)
+        return L2_ERR_ARG;
+
+    /* close channel file */
+    /* nothing to close   */
+
     return L2_OK;
 }
 
+/* destroy channel */
 static l2_result_t hook_destroy(l2_context_t *ctx, l2_channel_t *ch)
 {
+    /* parameter checks */
+    if (ctx->vp == NULL) 
+        return L2_ERR_ARG;
+
+    /* destroy channel configuration */
+    free(ctx->vp);
+
     return L2_OK;
 }
 
+/* exported channel handler structure */
 l2_handler_t l2_handler_fd = {
     L2_CHANNEL_OUTPUT,
     hook_create,