-/* $Cambridge: exim/src/src/string.c,v 1.15 2009/11/16 19:50:37 nm4 Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2009 */
+/* Copyright (c) University of Cambridge 1995 - 2014 */
/* See the file NOTICE for conditions of use and distribution. */
/* Miscellaneous string-handling functions. Some are not required for
*/
int
-string_is_ip_address(uschar *s, int *maskptr)
+string_is_ip_address(const uschar *s, int *maskptr)
{
int i;
int yield = 4;
if (maskptr != NULL)
{
- uschar *ss = s + Ustrlen(s);
+ const uschar *ss = s + Ustrlen(s);
*maskptr = 0;
if (s != ss && isdigit(*(--ss)))
{
uschar *
string_format_size(int size, uschar *buffer)
{
-if (size == 0) Ustrcpy(CS buffer, " ");
+if (size == 0) Ustrcpy(buffer, " ");
else if (size < 1024) sprintf(CS buffer, "%5d", size);
else if (size < 10*1024)
sprintf(CS buffer, "%4.1fK", (double)size / 1024.0);
-#ifndef COMPILE_UTILITY
/*************************************************
* Interpret escape sequence *
*************************************************/
int
string_interpret_escape(uschar **pp)
{
+#ifdef COMPILE_UTILITY
+const uschar *hex_digits= CUS"0123456789abcdef";
+#endif
int ch;
uschar *p = *pp;
ch = *(++p);
}
else switch(ch)
{
+ case 'b': ch = '\b'; break;
+ case 'f': ch = '\f'; break;
case 'n': ch = '\n'; break;
case 'r': ch = '\r'; break;
case 't': ch = '\t'; break;
+ case 'v': ch = '\v'; break;
case 'x':
ch = 0;
if (isxdigit(p[1]))
*pp = p;
return ch;
}
-#endif /* COMPILE_UTILITY */
/* Get a new block of store guaranteed big enough to hold the
expanded string. */
-ss = store_get(length + nonprintcount * 4 + 1);
+ss = store_get(length + nonprintcount * 3 + 1);
/* Copy everying, escaping non printers. */
}
#endif /* COMPILE_UTILITY */
+/*************************************************
+* Undo printing escapes in string *
+*************************************************/
+
+/* This function is the reverse of string_printing2. It searches for
+backslash characters and if any are found, it makes a new copy of the
+string with escape sequences parsed. Otherwise it returns the original
+string.
+
+Arguments:
+ s the input string
+
+Returns: string with printing escapes parsed back
+*/
+
+uschar *
+string_unprinting(uschar *s)
+{
+uschar *p, *q, *r, *ss;
+int len, off;
+
+p = Ustrchr(s, '\\');
+if (!p) return s;
+
+len = Ustrlen(s) + 1;
+ss = store_get(len);
+
+q = ss;
+off = p - s;
+if (off)
+ {
+ memcpy(q, s, off);
+ q += off;
+ }
+
+while (*p)
+ {
+ if (*p == '\\')
+ {
+ *q++ = string_interpret_escape(&p);
+ p++;
+ }
+ else
+ {
+ r = Ustrchr(p, '\\');
+ if (!r)
+ {
+ off = Ustrlen(p);
+ memcpy(q, p, off);
+ p += off;
+ q += off;
+ break;
+ }
+ else
+ {
+ off = r - p;
+ memcpy(q, p, off);
+ q += off;
+ p = r;
+ }
+ }
+ }
+*q = '\0';
+
+return ss;
+}
+
*/
uschar *
-string_copy(uschar *s)
+string_copy(const uschar *s)
{
int len = Ustrlen(s) + 1;
uschar *ss = store_get(len);
*/
uschar *
-string_copylc(uschar *s)
+string_copylc(const uschar *s)
{
uschar *ss = store_get(Ustrlen(s) + 1);
uschar *p = ss;
*/
uschar *
-string_copyn(uschar *s, int n)
+string_copyn(const uschar *s, int n)
{
uschar *ss = store_get(n + 1);
Ustrncpy(ss, s, n);
*/
uschar *
-string_sprintf(char *format, ...)
+string_sprintf(const char *format, ...)
{
va_list ap;
uschar buffer[STRING_SPRINTF_BUFFER_SIZE];
va_start(ap, format);
if (!string_vformat(buffer, sizeof(buffer), format, ap))
log_write(0, LOG_MAIN|LOG_PANIC_DIE,
- "string_sprintf expansion was longer than %d", sizeof(buffer));
+ "string_sprintf expansion was longer than " SIZE_T_FMT " (%s)",
+ sizeof(buffer), format);
va_end(ap);
return string_copy(buffer);
}
*/
int
-strncmpic(uschar *s, uschar *t, int n)
+strncmpic(const uschar *s, const uschar *t, int n)
{
while (n--)
{
*/
int
-strcmpic(uschar *s, uschar *t)
+strcmpic(const uschar *s, const uschar *t)
{
while (*s != 0)
{
#endif /* COMPILE_UTILITY */
+#ifndef COMPILE_UTILITY
+/************************************************
+* Add element to seperated list *
+************************************************/
+/* This function is used to build a list, returning
+an allocated null-terminated growable string. The
+given element has any embedded seperator characters
+doubled.
+
+Arguments:
+ list points to the start of the list that is being built, or NULL
+ if this is a new list that has no contents yet
+ sep list seperator charactoer
+ ele new lement to be appended to the list
+
+Returns: pointer to the start of the list, changed if copied for expansion.
+*/
+
+uschar *
+string_append_listele(uschar * list, uschar sep, const uschar * ele)
+{
+uschar * new = NULL;
+int sz = 0, off = 0;
+uschar * sp;
+
+if (list)
+ {
+ new = string_cat(new, &sz, &off, list, Ustrlen(list));
+ new = string_cat(new, &sz, &off, &sep, 1);
+ }
+
+while((sp = Ustrchr(ele, sep)))
+ {
+ new = string_cat(new, &sz, &off, ele, sp-ele+1);
+ new = string_cat(new, &sz, &off, &sep, 1);
+ ele = sp+1;
+ }
+new = string_cat(new, &sz, &off, ele, Ustrlen(ele));
+new[off] = '\0';
+return new;
+}
+
+
+static const uschar *
+Ustrnchr(const uschar * s, int c, unsigned * len)
+{
+while (*len)
+ {
+ if (!*s) return NULL;
+ if (*s == c) return s;
+ s++;
+ *len--;
+ }
+return NULL;
+}
+
+uschar *
+string_append_listele_n(uschar * list, uschar sep, const uschar * ele,
+ unsigned len)
+{
+uschar * new = NULL;
+int sz = 0, off = 0;
+const uschar * sp;
+
+if (list)
+ {
+ new = string_cat(new, &sz, &off, list, Ustrlen(list));
+ new = string_cat(new, &sz, &off, &sep, 1);
+ }
+
+while((sp = Ustrnchr(ele, sep, &len)))
+ {
+ new = string_cat(new, &sz, &off, ele, sp-ele+1);
+ new = string_cat(new, &sz, &off, &sep, 1);
+ ele = sp+1;
+ len--;
+ }
+new = string_cat(new, &sz, &off, ele, len);
+new[off] = '\0';
+return new;
+}
+#endif /* COMPILE_UTILITY */
+
+
#ifndef COMPILE_UTILITY
/*************************************************
The formats are the usual printf() ones, with some omissions (never used) and
two additions for strings: %S forces lower case, and %#s or %#S prints nothing
for a NULL string. Without the # "NULL" is printed (useful in debugging). There
-is also the addition of %D, which inserts the date in the form used for
+is also the addition of %D and %M, which insert the date in the form used for
datestamped log files.
Arguments:
*/
BOOL
-string_format(uschar *buffer, int buflen, char *format, ...)
+string_format(uschar *buffer, int buflen, const char *format, ...)
{
BOOL yield;
va_list ap;
BOOL
-string_vformat(uschar *buffer, int buflen, char *format, va_list ap)
+string_vformat(uschar *buffer, int buflen, const char *format, va_list ap)
{
-enum { L_NORMAL, L_SHORT, L_LONG, L_LONGLONG, L_LONGDOUBLE };
+/* We assume numbered ascending order, C does not guarantee that */
+enum { L_NORMAL=1, L_SHORT=2, L_LONG=3, L_LONGLONG=4, L_LONGDOUBLE=5, L_SIZE=6 };
BOOL yield = TRUE;
int width, precision;
-char *fp = format; /* Deliberately not unsigned */
+const char *fp = format; /* Deliberately not unsigned */
uschar *p = buffer;
uschar *last = buffer + buflen - 1;
string_datestamp_offset = -1; /* Datestamp not inserted */
+string_datestamp_length = 0; /* Datestamp not inserted */
+string_datestamp_type = 0; /* Datestamp not inserted */
/* Scan the format and handle the insertions */
int length = L_NORMAL;
int *nptr;
int slen;
- char *null = "NULL"; /* ) These variables */
- char *item_start, *s; /* ) are deliberately */
+ const char *null = "NULL"; /* ) These variables */
+ const char *item_start, *s; /* ) are deliberately */
char newformat[16]; /* ) not unsigned */
/* Non-% characters just get copied verbatim */
}
}
- /* Skip over 'h', 'L', 'l', and 'll', remembering the item length */
+ /* Skip over 'h', 'L', 'l', 'll' and 'z', remembering the item length */
if (*fp == 'h')
{ fp++; length = L_SHORT; }
length = L_LONG;
}
}
+ else if (*fp == 'z')
+ { fp++; length = L_SIZE; }
/* Handle each specific format type. */
case L_NORMAL: sprintf(CS p, newformat, va_arg(ap, int)); break;
case L_LONG: sprintf(CS p, newformat, va_arg(ap, long int)); break;
case L_LONGLONG: sprintf(CS p, newformat, va_arg(ap, LONGLONG_T)); break;
+ case L_SIZE: sprintf(CS p, newformat, va_arg(ap, size_t)); break;
}
while (*p) p++;
break;
*p++ = va_arg(ap, int);
break;
- case 'D': /* Insert datestamp for log file names */
- s = CS tod_stamp(tod_log_datestamp);
+ case 'D': /* Insert daily datestamp for log file names */
+ s = CS tod_stamp(tod_log_datestamp_daily);
string_datestamp_offset = p - buffer; /* Passed back via global */
+ string_datestamp_length = Ustrlen(s); /* Passed back via global */
+ string_datestamp_type = tod_log_datestamp_daily;
+ slen = string_datestamp_length;
+ goto INSERT_STRING;
+
+ case 'M': /* Insert monthly datestamp for log file names */
+ s = CS tod_stamp(tod_log_datestamp_monthly);
+ string_datestamp_offset = p - buffer; /* Passed back via global */
+ string_datestamp_length = Ustrlen(s); /* Passed back via global */
+ string_datestamp_type = tod_log_datestamp_monthly;
+ slen = string_datestamp_length;
goto INSERT_STRING;
case 's':
case 'S': /* Forces *lower* case */
s = va_arg(ap, char *);
- INSERT_STRING: /* Come to from %D above */
if (s == NULL) s = null;
slen = Ustrlen(s);
+ INSERT_STRING: /* Come to from %D or %M above */
+
/* If the width is specified, check that there is a precision
set; if not, set it to the width to prevent overruns of long
strings. */
*/
uschar *
-string_open_failed(int eno, char *format, ...)
+string_open_failed(int eno, const char *format, ...)
{
va_list ap;
uschar buffer[1024];
git://git.exim.org / users / jgh / exim.git / blobdiff