I installed postgres 7.1 with --enable-odbc. I then installed

tclodbc (http://sourceforge.net/projects/tclodbc) and libiodbc-2.50.3
(http://www.iodbc.org/dist/libiodbc-2.50.3.tar.gz).  I could not
get either to work... postgres would not find the global odbcinst.ini
file.  I traced this to src/interfaces/odbc/gpps.c -- here are the
many things I think are wrong:

Run tclodbc and do a ``database db <DSNname>'' where ``DSNname'' is
one of the DSN's in /usr/local/etc/odbcinst.ini (or wherever the
global ini file is installed.)  The result is always the error
message that ``one of server,port,database,etc. are missing''.

Run libiodbc-2.50.3/samples/odbctest <DSNname>.  The command fails
to connect to the database and just exits.

Dave Bodenstab

diff --git a/src/interfaces/odbc/gpps.c b/src/interfaces/odbc/gpps.c
index 93acebe..ec5ada6 100644 (file)
--- a/src/interfaces/odbc/gpps.c
+++ b/src/interfaces/odbc/gpps.c
@@ -37,6 +37,7 @@
 #include <string.h>
 #include "misc.h"
 #include "gpps.h"
+#include "dlg_specific.h"
 
 #ifndef TRUE
 #define TRUE   ((BOOL)1)
@@ -46,6 +47,12 @@
 #endif
 
 
+/*
+ * theIniFileName is searched for in:
+ *     $HOME/theIniFileName
+ *     theIniFileName
+ *     ODBCINST_INI
+ */
 DWORD
 GetPrivateProfileString(char *theSection,              /* section name */
                                                char *theKey,   /* search key name */
@@ -70,46 +77,38 @@ GetPrivateProfileString(char *theSection,           /* section name */
        size_t          aReturnLength = 0;
        BOOL            aSectionFound = FALSE;
        BOOL            aKeyFound = FALSE;
-       int                     j = 0;
+       size_t          aReturnLength = 0;
+       BOOL            aSectionFound = FALSE;
+       BOOL            aKeyFound = FALSE;
 
-       j = strlen(theIniFileName) + 1;
        ptr = (char *) getpwuid(getuid());      /* get user info */
 
-       if (ptr == NULL)
-       {
-               if (MAXPGPATH - 1 < j)
-                       theIniFileName[MAXPGPATH - 1] = '\0';
-
-               sprintf(buf, "%s", theIniFileName);
-       }
-       ptr = ((struct passwd *) ptr)->pw_dir;          /* get user home dir */
-       if (ptr == NULL || *ptr == '\0')
+       if (ptr == NULL || (((struct passwd *) ptr)->pw_dir) == NULL || *(((struct passwd *) ptr)->pw_dir) == '\0')
                ptr = "/home";
+       else
+               ptr = ((struct passwd *) ptr)->pw_dir;          /* get user home dir */
 
        /*
-        * This doesn't make it so we find an ini file but allows normal
-        * processing to continue further on down. The likelihood is that the
-        * file won't be found and thus the default value will be returned.
+        * If it can't be opened because the paths are too long, then
+        * skip it, don't just truncate the path string...  The truncated path
+        * might accidently be an existing file.  The default value will be
+        * returned instead.
         */
-       if (MAXPGPATH - 1 < strlen(ptr) + j)
+       if (MAXPGPATH - 1 >= strlen(ptr) + 1 + strlen(theIniFileName))
        {
-               if (MAXPGPATH - 1 < strlen(ptr))
-                       ptr[MAXPGPATH - 1] = '\0';
-               else
-                       theIniFileName[MAXPGPATH - 1 - strlen(ptr)] = '\0';
+               sprintf(buf, "%s/%s", ptr, theIniFileName);
+               aFile = (FILE *) fopen(buf, PG_BINARY_R);
        }
 
-       sprintf(buf, "%s/%s", ptr, theIniFileName);
-
        /*
         * This code makes it so that a file in the users home dir overrides a
         * the "default" file as passed in
         */
-       aFile = (FILE *) (buf ? fopen(buf, PG_BINARY_R) : NULL);
        if (!aFile)
        {
-               sprintf(buf, "%s", theIniFileName);
-               aFile = (FILE *) (buf ? fopen(buf, PG_BINARY_R) : NULL);
+               aFile = (FILE *) fopen(theIniFileName, PG_BINARY_R);
+               if (!aFile)
+                       aFile = (FILE *) fopen(ODBCINST_INI, PG_BINARY_R);
        }
 
        aLength = (theDefault == NULL) ? 0 : strlen(theDefault);