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adddsn.c

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#ifndef _WIN32
#error "only WIN32 supported"
#endif
#include <windows.h>
#include <sql.h>
#include <sqlext.h>
#include <odbcinst.h>
#include <winver.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>

static BOOL
ProcessErrorMessages(char *name)
{
    WORD err = 1;
    DWORD code;
    char errmsg[301];
    WORD errlen, errmax = sizeof (errmsg) - 1;
    int rc;
    BOOL ret = FALSE;

    do {
        errmsg[0] = '\0';
        rc = SQLInstallerError(err, &code, errmsg, errmax, &errlen);
        if (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO) {
            MessageBox(NULL, errmsg, name,
                       MB_ICONSTOP|MB_OK|MB_TASKMODAL|MB_SETFOREGROUND);
            ret = TRUE;
        }
        err++;
    } while (rc != SQL_NO_DATA);
    return ret;
}

int APIENTRY
WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
        LPSTR lpszCmdLine, int nCmdShow)
{
    char tmp[1024], *p, *drv, *cfg, *msg;
    int i, op;

    GetModuleFileName(NULL, tmp, sizeof (tmp));
    p = tmp;
    while (*p) {
        *p = tolower(*p);
        ++p;
    }
    p = strrchr(tmp, '\\');
    if (p == NULL) {
        p = tmp;
    }
    op = ODBC_ADD_DSN;
    msg = "Adding DSN";
    if (strstr(p, "rem") != NULL) {
        msg = "Removing DSN";
        op = ODBC_REMOVE_DSN;
    }
    if (strstr(p, "sys") != NULL) {
        if (op == ODBC_REMOVE_DSN) {
            op = ODBC_REMOVE_SYS_DSN;
        } else {
            op = ODBC_ADD_SYS_DSN;
        }
    }
    strncpy(tmp, lpszCmdLine, sizeof (tmp));
    /* get driver argument */
    i = strspn(tmp, "\"");
    drv = tmp + i;
    if (i > 0) {
        i = strcspn(drv, "\"");
        drv[i] = '\0';
        cfg = drv + i + 1;
    } else {
        i = strcspn(drv, " \t");
        if (i > 0) {
            drv[i] = '\0';
            cfg = drv + i + 1;
        } else {
            cfg = "\0\0";
        }
    }
    if (strlen(drv) == 0) {
        MessageBox(NULL, "No driver name given", msg,
                   MB_ICONERROR|MB_OK|MB_TASKMODAL|MB_SETFOREGROUND);
        exit(1);
    }
    i = strspn(cfg, " \t;");
    cfg += i;
    i = strlen(cfg);
    cfg[i + 1] = '\0';
    if (i > 0) {
        p = cfg;
        do {
            p = strchr(p, ';');
            if (p != NULL) {
                p[0] = '\0';
                p += 1;
            }
        } while (p != NULL);
    }
    p = cfg;
    if (SQLConfigDataSource(NULL, (WORD) op, drv, cfg)) {
        exit(0);
    }
    ProcessErrorMessages(msg);
    exit(1);
}

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Generated on 23 Oct 2023 by doxygen.