added more error debugging

git-svn-id: https://vsmartcard.svn.sourceforge.net/svnroot/vsmartcard@355 96b47cad-a561-4643-ad3b-153ac7d7599c

pcsc-relay/src/lnfc.c

@@ -167,8 +167,7 @@ static int lnfc_receive_capdu(void *driver_data,
 
     // Receive external reader command through target
     if (!nfc_target_receive_bytes(data->pndTarget, data->abtCapdu, &data->szCapduLen)) {
-        if (verbose >= 0)
+        ERROR ("nfc_target_receive_bytes: %s\n", nfc_strerror(data->pndTarget));
-            nfc_perror (data->pndTarget, "nfc_target_receive_bytes");
         return 0;
     }
 
@@ -196,8 +195,7 @@ static int lnfc_send_rapdu(void *driver_data,
 
 
     if (!nfc_target_send_bytes(data->pndTarget, rapdu, len)) {
-        if (verbose >= 0)
+        ERROR ("nfc_target_send_bytes: %s\n", nfc_strerror(data->pndTarget));
-            nfc_perror (data->pndTarget, "nfc_target_send_bytes");
         return 0;
     }
 

pcsc-relay/src/opicc.c

@@ -19,6 +19,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 
 #include "config.h"
 #include "pcsc-relay.h"
@@ -129,7 +130,7 @@ static int picc_connect(void **driver_data)
 
     data->fd = fopen(PICCDEV, "a+"); /*O_NOCTTY ?*/
     if (!data->fd) {
-        ERROR("Error opening %s\n", PICCDEV);
+        ERROR("Error opening %s: %s\n", PICCDEV, strerror(errno));
         return 0;
     }
 
@@ -166,18 +167,16 @@ static int picc_receive_capdu(void *driver_data,
 {
     ssize_t linelen;
     struct picc_data *data = driver_data;
-    size_t buflen = 0;
-    char *buf = NULL;
 
     if (!data || !capdu || !len)
         return 0;
 
 
     /* read C-APDU */
-    linelen = getline(&buf, &buflen, data->fd);
+    linelen = getline(&data->buf, &data->bufmax, data->fd);
     if (linelen < 0) {
         if (linelen < 0) {
-            ERROR("Error reading from %s\n", PICCDEV);
+            ERROR("Error reading from %s: %s\n", PICCDEV, strerror(errno));
             return 0;
         }
     }
@@ -187,15 +186,11 @@ static int picc_receive_capdu(void *driver_data,
     }
     fflush(data->fd);
 
-    DEBUG("%s\n", buf);
+    DEBUG("%s\n", data->buf);
 
 
     /* decode C-APDU */
-    if (!picc_decode_apdu(buf, linelen, capdu, len))
+    return picc_decode_apdu(data->buf, linelen, capdu, len);
-        return 0;
-
-
-    return 1;
 }
 
 static int picc_send_rapdu(void *driver_data,
@@ -218,8 +213,12 @@ static int picc_send_rapdu(void *driver_data,
     /* write R-APDU */
     DEBUG("INF: Writing R-APDU\r\n%s\r\n", data->buf);
 
-    if (fprintf(data->fd,"%s\r\n", (char *) data->buf) < 0
+    if (fprintf(data->fd,"%s\r\n", (char *) data->buf) < 0) {
-            || fflush(data->fd) != 0) {
+        ERROR("fprintf: %s\n", strerror(errno));
+        return 0;
+    }
+    if (fflush(data->fd) != 0) {
+        ERROR("fflush: %s\n", strerror(errno));
         return 0;
     }
 

pcsc-relay/src/pcsc-relay.c

@@ -70,13 +70,16 @@ static void daemonize();
 static void cleanup_exit(int signo);
 static void cleanup(void);
 
+
 void daemonize() {
     pid_t pid, sid;
 
-    /*Fork and continue as child process*/
+    /* Fork and continue as child process */
     pid = fork();
-    if (pid < 0)
+    if (pid < 0) {
+        ERROR("fork: %s\n", strerror(errno));
         goto err;
+    }
     if (pid > 0) /* Exit the parent */
         exit(0);
 
@@ -84,13 +87,17 @@ void daemonize() {
 
     /* Create new session and set the process group ID */
     sid = setsid();
-    if (sid < 0)
+    if (sid < 0) {
+        ERROR("setsid: %s\n", strerror(errno));
         goto err;
+    }
          
     /* Change the current working directory.  This prevents the current
-       directory from being locked; hence not being able to remove it. */
+     * directory from being locked; hence not being able to remove it. */
-    if (chdir("/") < 0)
+    if (chdir("/") < 0) {
+        ERROR("chdir: %s\n", strerror(errno));
         goto err;
+    }
 
     /* Redirect standard files to /dev/null */
     close(STDIN_FILENO);
@@ -190,8 +197,10 @@ int main (int argc, char **argv)
     sigemptyset(&new_sig.sa_mask);
     new_sig.sa_flags = SA_RESTART;
     if ((sigaction(SIGINT, &new_sig, &old_sig) < 0)
-            || (sigaction(SIGTERM, &new_sig, &old_sig) < 0))
+            || (sigaction(SIGTERM, &new_sig, &old_sig) < 0)) {
+        ERROR("sigaction: %s\n", strerror(errno));
         goto err;
+    }
 
 
     /* Open the device */
@@ -218,7 +227,7 @@ int main (int argc, char **argv)
 
 
         /* transmit APDU to card */
-        outputLength = MAX_BUFFER_SIZE;
+        outputLength = sizeof outputBuffer;
         r = pcsc_transmit(protocol, hCard, buf, buflen, outputBuffer, &outputLength);
         if (r != SCARD_S_SUCCESS)
             goto err;
@@ -235,5 +244,10 @@ int main (int argc, char **argv)
 err:
     cleanup();
 
-    exit(r == SCARD_S_SUCCESS ? 0 : 1);
+    if (r != SCARD_S_SUCCESS) {
+        ERROR(pcsc_stringify_error(r));
+        exit(1);
+    }
+
+    exit(0);
 }

pcsc-relay/src/pcsc-relay.h

@@ -51,8 +51,10 @@ extern struct rf_driver driver_libnfc;
     {if (verbose >= LEVEL_INFO) \
         printf (__VA_ARGS__);}
 #define ERROR(...) \
-    {if (verbose >= 0) \
+    { \
-        fprintf (stderr, __VA_ARGS__);}
+        if (verbose >= LEVEL_DEBUG) fprintf (stderr, "%s:%u\t", __FILE__, __LINE__); \
+        if (verbose >= 0) fprintf (stderr, __VA_ARGS__); \
+    }
 
 
 #ifdef  __cplusplus