add debug messages for initialization failures

ares/ares_gethostbyaddr.c

@@ -224,6 +224,7 @@ static int file_lookup(union ares_addr *addr, int family, struct hostent **host)
       switch(error) 
         {
         case ENOENT:
+        case ESRCH:
           return ARES_ENOTFOUND;
         default:
           DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",

ares/ares_gethostbyname.c

@@ -248,6 +248,7 @@ static int file_lookup(const char *name, int family, struct hostent **host)
   FILE *fp;
   char **alias;
   int status;
+  int error;
 
 #ifdef WIN32
   char PATH_HOSTS[MAX_PATH];
@@ -280,8 +281,22 @@ static int file_lookup(const char *name, int family, struct hostent **host)
 
   fp = fopen(PATH_HOSTS, "r");
   if (!fp)
-    return ARES_ENOTFOUND;
+    {
-
+      error = ERRNO;
+      switch(error) 
+        {
+        case ENOENT:
+        case ESRCH:
+          return ARES_ENOTFOUND;
+        default:
+          DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",
+                         error, strerror(error)));
+          DEBUGF(fprintf(stderr, "Error opening file: %s\n", 
+                         PATH_HOSTS));
+          *host = NULL;
+          return ARES_EFILE;
+        }
+    }
   while ((status = ares__get_hostent(fp, family, host)) == ARES_SUCCESS)
     {
       if (strcasecmp((*host)->h_name, name) == 0)

ares/ares_init.c

@@ -639,6 +639,7 @@ DhcpNameServer
       error = ERRNO;
       switch(error) {
       case ENOENT:
+      case ESRCH:
         status = ARES_EOF;
         break;
       default:
@@ -664,6 +665,7 @@ DhcpNameServer
         error = ERRNO;
         switch(error) {
         case ENOENT:
+        case ESRCH:
           status = ARES_EOF;
           break;
         default:
@@ -690,6 +692,7 @@ DhcpNameServer
         error = ERRNO;
         switch(error) {
         case ENOENT:
+        case ESRCH:
           status = ARES_EOF;
           break;
         default:
@@ -716,6 +719,7 @@ DhcpNameServer
         error = ERRNO;
         switch(error) {
         case ENOENT:
+        case ESRCH:
           status = ARES_EOF;
           break;
         default:

ares/ares_search.c

@@ -273,6 +273,7 @@ static int single_domain(ares_channel channel, const char *name, char **s)
               switch(error) 
                 {
                 case ENOENT:
+                case ESRCH:
                   break;
                 default:
                   DEBUGF(fprintf(stderr, "fopen() failed with error: %d %s\n",

tests/server/sockfilt.c

@@ -353,7 +353,7 @@ static int juggle(curl_socket_t *sockfdp,
          client connecting. */
       sockfd = accept(sockfd, NULL, NULL);
       if(CURL_SOCKET_BAD == sockfd)
-        logmsg("accept() failed\n");
+        logmsg("accept() failed");
       else {
         logmsg("====> Client connect");
         write(fileno(stdout), "CNCT\n", 5);
@@ -438,7 +438,7 @@ static curl_socket_t sockdaemon(curl_socket_t sock,
 
     if(getsockname(sock, (struct sockaddr *) &add,
                    &socksize)<0) {
-      fprintf(stderr, "getsockname() failed");
+      logmsg("getsockname() failed with error: %d", SOCKERRNO);
       return CURL_SOCKET_BAD;
     }
     *port = ntohs(add.sin_port);
@@ -489,6 +489,7 @@ int main(int argc, char *argv[])
   FILE *pidfile;
   char *pidname= (char *)".sockfilt.pid";
   int rc;
+  int error;
   int arg=1;
   enum sockmode mode = PASSIVE_LISTEN; /* default */
 
@@ -631,7 +632,10 @@ int main(int argc, char *argv[])
     logmsg("Wrote pid %d to %s", pid, pidname);
   }
   else {
-    fprintf(stderr, "Couldn't write pid file\n");
+    error = ERRNO;
+    logmsg("fopen() failed with error: %d %s\n", error, strerror(error));
+    logmsg("Error opening file: %s\n", pidname);
+    logmsg("Couldn't write pid file\n");
     sclose(sock);
     return 1;
   }

tests/server/sws.c

@@ -197,6 +197,7 @@ int ProcessRequest(struct httprequest *req)
   char logbuf[256];
   int prot_major, prot_minor;
   char *end;
+  int error;
   end = strstr(line, END_OF_HEADERS);
 
   logmsg("ProcessRequest() called");
@@ -263,6 +264,9 @@ int ProcessRequest(struct httprequest *req)
 
       stream=fopen(filename, "rb");
       if(!stream) {
+        error = ERRNO;
+        logmsg("fopen() failed with error: %d %s", error, strerror(error));
+        logmsg("Error opening file: %s", filename);
         logmsg("Couldn't open test file %d", req->testno);
         req->open = FALSE; /* closes connection */
         return 1; /* done */
@@ -569,6 +573,7 @@ static int send_doc(curl_socket_t sock, struct httprequest *req)
   FILE *dump;
   int persistant = TRUE;
   size_t responsesize;
+  int error;
 
   static char weare[256];
 
@@ -646,6 +651,9 @@ static int send_doc(curl_socket_t sock, struct httprequest *req)
 
     stream=fopen(filename, "rb");
     if(!stream) {
+      error = ERRNO;
+      logmsg("fopen() failed with error: %d %s", error, strerror(error));
+      logmsg("Error opening file: %s", filename);
       logmsg("Couldn't open test file");
       return 0;
     }
@@ -658,6 +666,9 @@ static int send_doc(curl_socket_t sock, struct httprequest *req)
     /* re-open the same file again */
     stream=fopen(filename, "rb");
     if(!stream) {
+      error = ERRNO;
+      logmsg("fopen() failed with error: %d %s", error, strerror(error));
+      logmsg("Error opening file: %s", filename);
       logmsg("Couldn't open test file");
       return 0;
     }
@@ -670,6 +681,9 @@ static int send_doc(curl_socket_t sock, struct httprequest *req)
 
   dump = fopen(RESPONSE_DUMP, "ab"); /* b is for windows-preparing */
   if(!dump) {
+    error = ERRNO;
+    logmsg("fopen() failed with error: %d %s", error, strerror(error));
+    logmsg("Error opening file: %s", RESPONSE_DUMP);
     logmsg("couldn't create logfile: " RESPONSE_DUMP);
     return -1;
   }
@@ -872,7 +886,10 @@ int main(int argc, char *argv[])
     fclose(pidfile);
   }
   else {
-    fprintf(stderr, "Couldn't write pid file\n");
+    error = ERRNO;
+    logmsg("fopen() failed with error: %d %s", error, strerror(error));
+    logmsg("Error opening file: %s", pidname);
+    logmsg("Couldn't write pid file");
     sclose(sock);
     return 1;
   }

tests/server/tftpd.c

@@ -424,6 +424,7 @@ int main(int argc, char **argv)
   curl_socket_t sock;
   int flag;
   int rc;
+  int error;
   struct testcase test;
 
   while(argc>arg) {
@@ -513,8 +514,12 @@ int main(int argc, char **argv)
     fprintf(pidfile, "%d\n", (int)getpid());
     fclose(pidfile);
   }
-  else
+  else {
-    fprintf(stderr, "Couldn't write pid file\n");
+    error = ERRNO;
+    logmsg("fopen() failed with error: %d %s", error, strerror(error));
+    logmsg("Error opening file: %s", pidname);
+    logmsg("Couldn't write pid file");
+  }
 
   logmsg("Running IPv%d version on port UDP/%d",
 #ifdef ENABLE_IPV6
@@ -554,8 +559,12 @@ int main(int argc, char **argv)
     if (tp->th_opcode == RRQ || tp->th_opcode == WRQ) {
       memset(&test, 0, sizeof(test));
       server = fopen(REQUEST_DUMP, "ab");
-      if(!server)
+      if(!server) {
+        error = ERRNO;
+        logmsg("fopen() failed with error: %d %s", error, strerror(error));
+        logmsg("Error opening file: %s", REQUEST_DUMP);
         break;
+      }
       test.server = server;
       tftp(&test, tp, n);
       if(test.buffer)
@@ -645,6 +654,7 @@ static int validate_access(struct testcase *test,
 {
   char *ptr;
   long testno;
+  int error;
 
   logmsg("trying to get file: %s mode %x", filename, mode);
 
@@ -684,6 +694,9 @@ static int validate_access(struct testcase *test,
     if(file) {
       FILE *stream=fopen(file, "rb");
       if(!stream) {
+        error = ERRNO;
+        logmsg("fopen() failed with error: %d %s", error, strerror(error));
+        logmsg("Error opening file: %s", file);
         logmsg("Couldn't open test file: %s", file);
         return EACCESS;
       }

tests/server/util.c

@@ -130,7 +130,7 @@ void win32_init(void)
 
   if (err != 0) {
     perror("Winsock init failed");
-    logmsg("Error initialising winsock -- aborting\n");
+    logmsg("Error initialising winsock -- aborting");
     exit(1);
   }
 
@@ -139,7 +139,7 @@ void win32_init(void)
 
     WSACleanup();
     perror("Winsock init failed");
-    logmsg("No suitable winsock.dll found -- aborting\n");
+    logmsg("No suitable winsock.dll found -- aborting");
     exit(1);
   }
 }