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-rw-r--r--cpukit/httpd/misc.c581
1 files changed, 581 insertions, 0 deletions
diff --git a/cpukit/httpd/misc.c b/cpukit/httpd/misc.c
new file mode 100644
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--- /dev/null
+++ b/cpukit/httpd/misc.c
@@ -0,0 +1,581 @@
+/*
+ * misc.c -- Miscellaneous routines.
+ *
+ * Copyright (c) GoAhead Software Inc., 1995-1999. All Rights Reserved.
+ *
+ * See the file "license.txt" for usage and redistribution license requirements
+ */
+
+/********************************* Includes ***********************************/
+
+#if UEMF
+ #include "uemf.h"
+#else
+ #include "basic/basicInternal.h"
+#endif
+
+/********************************* Defines ************************************/
+/*
+ * Sprintf buffer structure. Make the increment 8 less than 64 so that
+ * a balloc can use a 64 byte block.
+ */
+
+#define STR_REALLOC 0x1 /* Reallocate the buffer as required */
+#define STR_INC 58 /* Growth increment */
+
+typedef struct {
+ char_t *s; /* Pointer to buffer */
+ int size; /* Current buffer size */
+ int max; /* Maximum buffer size */
+ int count; /* Buffer count */
+ int flags; /* Allocation flags */
+} strbuf_t;
+
+/*
+ * Sprintf formatting flags
+ */
+enum flag {
+ flag_none = 0,
+ flag_minus = 1,
+ flag_plus = 2,
+ flag_space = 4,
+ flag_hash = 8,
+ flag_zero = 16,
+ flag_short = 32,
+ flag_long = 64
+};
+
+/************************** Forward Declarations ******************************/
+
+static int dsnprintf(char_t **s, int size, char_t *fmt, va_list arg,
+ int msize);
+static int strnlen(char_t *s, unsigned int n);
+static void put_char(strbuf_t *buf, char_t c);
+static void put_string(strbuf_t *buf, char_t *s, int len,
+ int width, int prec, enum flag f);
+static void put_ulong(strbuf_t *buf, unsigned long int value, int base,
+ int upper, char_t *prefix, int width, int prec, enum flag f);
+
+/************************************ Code ************************************/
+/*
+ * "basename" returns a pointer to the last component of a pathname
+ * LINUX and LynxOS have their own basename function
+ */
+
+#if ! LINUX & ! LYNX
+char_t *basename(char_t* name)
+{
+ char_t *cp;
+
+#if NW || WIN
+ if (((cp = gstrrchr(name, '\\')) == NULL) &&
+ ((cp = gstrrchr(name, '/')) == NULL)) {
+ return name;
+#else
+ if ((cp = gstrrchr(name, '/')) == NULL) {
+ return name;
+#endif
+ } else if (*(cp + 1) == '\0' && cp == name) {
+ return name;
+ } else if (*(cp + 1) == '\0' && cp != name) {
+ return T("");
+ } else {
+ return ++cp;
+ }
+}
+#endif /* ! LINUX & ! LYNX */
+
+/******************************************************************************/
+/*
+ * Returns a pointer to the directory component of a pathname. bufsize is
+ * the size of the buffer in BYTES!
+ */
+
+char_t *dirname(char_t* buf, char_t* name, int bufsize)
+{
+ char_t* cp;
+ int len;
+
+ a_assert(name);
+ a_assert(buf);
+ a_assert(bufsize > 0);
+
+#if WIN || NW
+ if ((cp = gstrrchr(name, '/')) == NULL &&
+ (cp = gstrrchr(name, '\\')) == NULL)
+#else
+ if ((cp = gstrrchr(name, '/')) == NULL)
+#endif
+ {
+ gstrcpy(buf, T("."));
+ return buf;
+ }
+
+ if ((*(cp + 1) == '\0' && cp == name)) {
+ gstrncpy(buf, T("."), TSZ(bufsize));
+ gstrcpy(buf, T("."));
+ return buf;
+ }
+
+ len = cp - name;
+
+ if (len < bufsize) {
+ gstrncpy(buf, name, len);
+ buf[len] = '\0';
+ } else {
+ gstrncpy(buf, name, TSZ(bufsize));
+ buf[bufsize - 1] = '\0';
+ }
+
+ return buf;
+}
+
+/******************************************************************************/
+/*
+ * sprintf and vsprintf are bad, ok. You can easily clobber memory. Use
+ * gsnprintf and gvsnprintf instead! These functions do _not_ support floating
+ * point, like %e, %f, %g...
+ */
+
+int gsnprintf(char_t **s, int n, char_t *fmt, ...)
+{
+ va_list ap;
+ int result;
+
+ a_assert(s);
+ a_assert(fmt);
+
+ *s = NULL;
+ va_start(ap, fmt);
+ result = gvsnprintf(s, n, fmt, ap);
+ va_end(ap);
+ return result;
+}
+
+/******************************************************************************/
+/*
+ * This function appends the formatted string to the supplied string,
+ * reallocing if required.
+ */
+
+int gsprintfRealloc(char_t **s, int n, int msize, char_t *fmt, ...)
+{
+ va_list ap;
+ int result;
+
+ a_assert(s);
+ a_assert(fmt);
+
+ if (msize == -1) {
+ *s = NULL;
+ }
+ va_start(ap, fmt);
+ result = dsnprintf(s, n, fmt, ap, msize);
+ va_end(ap);
+ return result;
+}
+
+/******************************************************************************/
+/*
+ * A vsprintf replacement.
+ */
+
+int gvsnprintf(char_t **s, int n, char_t *fmt, va_list arg)
+{
+ a_assert(s);
+ a_assert(fmt);
+
+ return dsnprintf(s, n, fmt, arg, 0);
+}
+
+/******************************************************************************/
+/*
+ * Dynamic sprintf implementation. Supports dynamic buffer allocation also.
+ * This function can be called multiple times to grow an existing allocated
+ * buffer. In this case, msize is set to the size of the previously allocated
+ * buffer. The buffer will be realloced, as required. If msize is set, we
+ * return the size of the allocated buffer for use with the next call. For
+ * the first call, msize can be set to -1.
+ */
+
+static int dsnprintf(char_t **s, int size, char_t *fmt, va_list arg, int msize)
+{
+ strbuf_t buf;
+ char_t c;
+
+ a_assert(s);
+ a_assert(fmt);
+
+ memset(&buf, 0, sizeof(buf));
+ buf.s = *s;
+
+ if (*s == NULL || msize != 0) {
+ buf.max = size;
+ buf.flags |= STR_REALLOC;
+ if (msize != 0) {
+ buf.size = max(msize, 0);
+ }
+ if (*s != NULL && msize != 0) {
+ buf.count = gstrlen(*s);
+ }
+ } else {
+ buf.size = size;
+ }
+
+ while ((c = *fmt++) != '\0') {
+ if (c != '%' || (c = *fmt++) == '%') {
+ put_char(&buf, c);
+ } else {
+ enum flag f = flag_none;
+ int width = 0;
+ int prec = -1;
+ for ( ; c != '\0'; c = *fmt++) {
+ if (c == '-') {
+ f |= flag_minus;
+ } else if (c == '+') {
+ f |= flag_plus;
+ } else if (c == ' ') {
+ f |= flag_space;
+ } else if (c == '#') {
+ f |= flag_hash;
+ } else if (c == '0') {
+ f |= flag_zero;
+ } else {
+ break;
+ }
+ }
+ if (c == '*') {
+ width = va_arg(arg, int);
+ if (width < 0) {
+ f |= flag_minus;
+ width = -width;
+ }
+ c = *fmt++;
+ } else {
+ for ( ; gisdigit(c); c = *fmt++) {
+ width = width * 10 + (c - '0');
+ }
+ }
+ if (c == '.') {
+ f &= ~flag_zero;
+ c = *fmt++;
+ if (c == '*') {
+ prec = va_arg(arg, int);
+ c = *fmt++;
+ } else {
+ for (prec = 0; gisdigit(c); c = *fmt++) {
+ prec = prec * 10 + (c - '0');
+ }
+ }
+ }
+ if (c == 'h' || c == 'l') {
+ f |= (c == 'h' ? flag_short : flag_long);
+ c = *fmt++;
+ }
+ if (c == 'd' || c == 'i') {
+ long int value;
+ if (f & flag_short) {
+ value = (short int) va_arg(arg, int);
+ } else if (f & flag_long) {
+ value = va_arg(arg, long int);
+ } else {
+ value = va_arg(arg, int);
+ }
+ if (value >= 0) {
+ if (f & flag_plus) {
+ put_ulong(&buf, value, 10, 0, T("+"), width, prec, f);
+ } else if (f & flag_space) {
+ put_ulong(&buf, value, 10, 0, T(" "), width, prec, f);
+ } else {
+ put_ulong(&buf, value, 10, 0, NULL, width, prec, f);
+ }
+ } else {
+ put_ulong(&buf, -value, 10, 0, T("-"), width, prec, f);
+ }
+ } else if (c == 'o' || c == 'u' || c == 'x' || c == 'X') {
+ unsigned long int value;
+ if (f & flag_short) {
+ value = (unsigned short int) va_arg(arg, unsigned int);
+ } else if (f & flag_long) {
+ value = va_arg(arg, unsigned long int);
+ } else {
+ value = va_arg(arg, unsigned int);
+ }
+ if (c == 'o') {
+ if (f & flag_hash && value != 0) {
+ put_ulong(&buf, value, 8, 0, T("0"), width, prec, f);
+ } else {
+ put_ulong(&buf, value, 8, 0, NULL, width, prec, f);
+ }
+ } else if (c == 'u') {
+ put_ulong(&buf, value, 10, 0, NULL, width, prec, f);
+ } else {
+ if (f & flag_hash && value != 0) {
+ if (c == 'x') {
+ put_ulong(&buf, value, 16, 0, T("0x"), width,
+ prec, f);
+ } else {
+ put_ulong(&buf, value, 16, 1, T("0X"), width,
+ prec, f);
+ }
+ } else {
+ put_ulong(&buf, value, 16, 0, NULL, width, prec, f);
+ }
+ }
+
+ } else if (c == 'c') {
+ char_t value = va_arg(arg, int);
+ put_char(&buf, value);
+
+ } else if (c == 's' || c == 'S') {
+ char_t *value = va_arg(arg, char_t *);
+ if (value == NULL) {
+ put_string(&buf, T("(null)"), -1, width, prec, f);
+ } else if (f & flag_hash) {
+ put_string(&buf,
+ value + 1, (char_t) *value, width, prec, f);
+ } else {
+ put_string(&buf, value, -1, width, prec, f);
+ }
+ } else if (c == 'p') {
+ void *value = va_arg(arg, void *);
+ put_ulong(&buf,
+ (unsigned long int) value, 16, 0, T("0x"), width, prec, f);
+ } else if (c == 'n') {
+ if (f & flag_short) {
+ short int *value = va_arg(arg, short int *);
+ *value = buf.count;
+ } else if (f & flag_long) {
+ long int *value = va_arg(arg, long int *);
+ *value = buf.count;
+ } else {
+ int *value = va_arg(arg, int *);
+ *value = buf.count;
+ }
+ } else {
+ put_char(&buf, c);
+ }
+ }
+ }
+ if (buf.s == NULL) {
+ put_char(&buf, '\0');
+ }
+
+/*
+ * If the user requested a dynamic buffer (*s == NULL), ensure it is returned.
+ */
+ if (*s == NULL || msize != 0) {
+ *s = buf.s;
+ }
+
+ if (*s != NULL && size > 0) {
+ if (buf.count < size) {
+ (*s)[buf.count] = '\0';
+ } else {
+ (*s)[buf.size - 1] = '\0';
+ }
+ }
+
+ if (msize != 0) {
+ return buf.size;
+ }
+ return buf.count;
+}
+
+/******************************************************************************/
+/*
+ * Return the length of a string limited by a given length
+ */
+
+static int strnlen(char_t *s, unsigned int n)
+{
+ unsigned int len;
+
+ len = gstrlen(s);
+ return min(len, n);
+}
+
+/******************************************************************************/
+/*
+ * Add a character to a string buffer
+ */
+
+static void put_char(strbuf_t *buf, char_t c)
+{
+ if (buf->count >= buf->size) {
+ if (! (buf->flags & STR_REALLOC)) {
+ return;
+ }
+ buf->size += STR_INC;
+ if (buf->size > buf->max && buf->size > STR_INC) {
+ a_assert(buf->size <= buf->max);
+ buf->size -= STR_INC;
+ return;
+ }
+ if (buf->s == NULL) {
+ buf->s = balloc(B_L, buf->size * sizeof(char_t*));
+ } else {
+ buf->s = brealloc(B_L, buf->s, buf->size * sizeof(char_t*));
+ }
+ }
+ buf->s[buf->count] = c;
+ ++buf->count;
+}
+
+/******************************************************************************/
+/*
+ * Add a string to a string buffer
+ */
+
+static void put_string(strbuf_t *buf, char_t *s, int len, int width,
+ int prec, enum flag f)
+{
+ int i;
+
+ if (len < 0) {
+ len = strnlen(s, prec >= 0 ? prec : ULONG_MAX);
+ } else if (prec >= 0 && prec < len) {
+ len = prec;
+ }
+ if (width > len && !(f & flag_minus)) {
+ for (i = len; i < width; ++i) {
+ put_char(buf, ' ');
+ }
+ }
+ for (i = 0; i < len; ++i) {
+ put_char(buf, s[i]);
+ }
+ if (width > len && f & flag_minus) {
+ for (i = len; i < width; ++i) {
+ put_char(buf, ' ');
+ }
+ }
+}
+
+/******************************************************************************/
+/*
+ * Add a long to a string buffer
+ */
+
+static void put_ulong(strbuf_t *buf, unsigned long int value, int base,
+ int upper, char_t *prefix, int width, int prec, enum flag f)
+{
+ unsigned long x, x2;
+ int len, zeros, i;
+
+ for (len = 1, x = 1; x < ULONG_MAX / base; ++len, x = x2) {
+ x2 = x * base;
+ if (x2 > value) {
+ break;
+ }
+ }
+ zeros = (prec > len) ? prec - len : 0;
+ width -= zeros + len;
+ if (prefix != NULL) {
+ width -= strnlen(prefix, ULONG_MAX);
+ }
+ if (!(f & flag_minus)) {
+ for (i = 0; i < width; ++i) {
+ put_char(buf, ' ');
+ }
+ }
+ if (prefix != NULL) {
+ put_string(buf, prefix, -1, 0, -1, flag_none);
+ }
+ for (i = 0; i < zeros; ++i) {
+ put_char(buf, '0');
+ }
+ for ( ; x > 0; x /= base) {
+ int digit = (value / x) % base;
+ put_char(buf, (char) ((digit < 10 ? '0' : (upper ? 'A' : 'a') - 10) +
+ digit));
+ }
+ if (f & flag_minus) {
+ for (i = 0; i < width; ++i) {
+ put_char(buf, ' ');
+ }
+ }
+}
+
+/******************************************************************************/
+/*
+ * Convert an ansi string to a unicode string. On an error, we return the
+ * original ansi string which is better than returning NULL. nBytes is the
+ * size of the destination buffer (ubuf) in _bytes_.
+ */
+
+char_t *ascToUni(char_t *ubuf, char *str, int nBytes)
+{
+#if UNICODE
+ if (MultiByteToWideChar(CP_ACP, 0, str, nBytes / sizeof(char_t), ubuf,
+ nBytes / sizeof(char_t)) < 0) {
+ return (char_t*) str;
+ }
+#else
+ memcpy(ubuf, str, nBytes);
+#endif
+ return ubuf;
+}
+
+/******************************************************************************/
+/*
+ * Convert a unicode string to an ansi string. On an error, return the
+ * original unicode string which is better than returning NULL.
+ * N.B. nBytes is the number of _bytes_ in the destination buffer, buf.
+ */
+
+char *uniToAsc(char *buf, char_t* ustr, int nBytes)
+{
+#if UNICODE
+ if (WideCharToMultiByte(CP_ACP, 0, ustr, nBytes, buf, nBytes, NULL,
+ NULL) < 0) {
+ return (char*) ustr;
+ }
+#else
+ memcpy(buf, ustr, nBytes);
+#endif
+ return (char*) buf;
+}
+
+
+/******************************************************************************/
+/*
+ * allocate (balloc) a buffer and do ascii to unicode conversion into it.
+ * cp points to the ascii string which must be NULL terminated.
+ * Return a pointer to the unicode buffer which must be bfree'd later.
+ * Return NULL on failure to get buffer.
+ */
+char_t *ballocAscToUni(char * cp)
+{
+ char_t * unip;
+ int ulen;
+
+ ulen = (strlen(cp) + 1) * sizeof(char_t);
+ if ((unip = balloc(B_L, ulen)) == NULL) {
+ return NULL;
+ }
+ ascToUni(unip, cp, ulen);
+ return unip;
+}
+
+/******************************************************************************/
+/*
+ * allocate (balloc) a buffer and do unicode to ascii conversion into it.
+ * unip points to the unicoded string. ulen is the number of characters
+ * in the unicode string including teminating null, if there is one.
+ * Return a pointer to the ascii buffer which must be bfree'd later.
+ * Return NULL on failure to get buffer.
+ */
+char *ballocUniToAsc(char_t * unip, int ulen)
+{
+ char * cp;
+
+ if ((cp = balloc(B_L, ulen)) == NULL) {
+ return NULL;
+ }
+ uniToAsc(cp, unip, ulen);
+ return cp;
+}
+
+/******************************************************************************/
+
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