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-rw-r--r--src/snprintf.c1452
1 files changed, 1452 insertions, 0 deletions
diff --git a/src/snprintf.c b/src/snprintf.c
new file mode 100644
index 0000000..3a5d672
--- /dev/null
+++ b/src/snprintf.c
@@ -0,0 +1,1452 @@
+/*
+ * NOTE: If you change this file, please merge it into rsync, samba, etc.
+ */
+
+/*
+ * Copyright Patrick Powell 1995
+ * This code is based on code written by Patrick Powell (papowell@astart.com)
+ * It may be used for any purpose as long as this notice remains intact
+ * on all source code distributions
+ */
+
+/**************************************************************
+ * Original:
+ * Patrick Powell Tue Apr 11 09:48:21 PDT 1995
+ * A bombproof version of doprnt (dopr) included.
+ * Sigh. This sort of thing is always nasty do deal with. Note that
+ * the version here does not include floating point...
+ *
+ * snprintf() is used instead of sprintf() as it does limit checks
+ * for string length. This covers a nasty loophole.
+ *
+ * The other functions are there to prevent NULL pointers from
+ * causing nast effects.
+ *
+ * More Recently:
+ * Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43
+ * This was ugly. It is still ugly. I opted out of floating point
+ * numbers, but the formatter understands just about everything
+ * from the normal C string format, at least as far as I can tell from
+ * the Solaris 2.5 printf(3S) man page.
+ *
+ * Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1
+ * Ok, added some minimal floating point support, which means this
+ * probably requires libm on most operating systems. Don't yet
+ * support the exponent (e,E) and sigfig (g,G). Also, fmtint()
+ * was pretty badly broken, it just wasn't being exercised in ways
+ * which showed it, so that's been fixed. Also, formated the code
+ * to mutt conventions, and removed dead code left over from the
+ * original. Also, there is now a builtin-test, just compile with:
+ * gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm
+ * and run snprintf for results.
+ *
+ * Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i
+ * The PGP code was using unsigned hexadecimal formats.
+ * Unfortunately, unsigned formats simply didn't work.
+ *
+ * Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8
+ * The original code assumed that both snprintf() and vsnprintf() were
+ * missing. Some systems only have snprintf() but not vsnprintf(), so
+ * the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF.
+ *
+ * Andrew Tridgell (tridge@samba.org) Oct 1998
+ * fixed handling of %.0f
+ * added test for HAVE_LONG_DOUBLE
+ *
+ * tridge@samba.org, idra@samba.org, April 2001
+ * got rid of fcvt code (twas buggy and made testing harder)
+ * added C99 semantics
+ *
+ * date: 2002/12/19 19:56:31; author: herb; state: Exp; lines: +2 -0
+ * actually print args for %g and %e
+ *
+ * date: 2002/06/03 13:37:52; author: jmcd; state: Exp; lines: +8 -0
+ * Since includes.h isn't included here, VA_COPY has to be defined here. I don't
+ * see any include file that is guaranteed to be here, so I'm defining it
+ * locally. Fixes AIX and Solaris builds.
+ *
+ * date: 2002/06/03 03:07:24; author: tridge; state: Exp; lines: +5 -13
+ * put the ifdef for HAVE_VA_COPY in one place rather than in lots of
+ * functions
+ *
+ * date: 2002/05/17 14:51:22; author: jmcd; state: Exp; lines: +21 -4
+ * Fix usage of va_list passed as an arg. Use __va_copy before using it
+ * when it exists.
+ *
+ * date: 2002/04/16 22:38:04; author: idra; state: Exp; lines: +20 -14
+ * Fix incorrect zpadlen handling in fmtfp.
+ * Thanks to Ollie Oldham <ollie.oldham@metro-optix.com> for spotting it.
+ * few mods to make it easier to compile the tests.
+ * added the "Ollie" test to the floating point ones.
+ *
+ * Martin Pool (mbp@samba.org) April 2003
+ * Remove NO_CONFIG_H so that the test case can be built within a source
+ * tree with less trouble.
+ * Remove unnecessary SAFE_FREE() definition.
+ *
+ * Martin Pool (mbp@samba.org) May 2003
+ * Put in a prototype for dummy_snprintf() to quiet compiler warnings.
+ *
+ * Move #endif to make sure VA_COPY, LDOUBLE, etc are defined even
+ * if the C library has some snprintf functions already.
+ *
+ * Darren Tucker (dtucker@zip.com.au) 2005
+ * Fix bug allowing read overruns of the source string with "%.*s"
+ * Usually harmless unless the read runs outside the process' allocation
+ * (eg if your malloc does guard pages) in which case it will segfault.
+ * From OpenSSH. Also added test for same.
+ *
+ * Simo Sorce (idra@samba.org) Jan 2006
+ *
+ * Add support for position independent parameters
+ * fix fmtstr now it conforms to sprintf wrt min.max
+ *
+ **************************************************************/
+
+#ifndef NO_CONFIG_H
+/* 08/13/2007 EG changed path to config.h to match NRPE distro */
+#include "../include/config.h"
+#else
+#define NULL 0
+#endif
+
+#ifdef TEST_SNPRINTF /* need math library headers for testing */
+
+/* In test mode, we pretend that this system doesn't have any snprintf
+ * functions, regardless of what config.h says. */
+# undef HAVE_SNPRINTF
+# undef HAVE_VSNPRINTF
+# undef HAVE_C99_VSNPRINTF
+# undef HAVE_ASPRINTF
+# undef HAVE_VASPRINTF
+# include <math.h>
+#endif /* TEST_SNPRINTF */
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#ifdef HAVE_CTYPE_H
+#include <ctype.h>
+#endif
+#include <sys/types.h>
+#include <stdarg.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+#if defined(HAVE_SNPRINTF) && defined(HAVE_VSNPRINTF) && defined(HAVE_C99_VSNPRINTF)
+/* only include stdio.h if we are not re-defining snprintf or vsnprintf */
+#include <stdio.h>
+ /* make the compiler happy with an empty file */
+ void dummy_snprintf(void);
+ void dummy_snprintf(void) {}
+#endif /* HAVE_SNPRINTF, etc */
+
+#ifdef HAVE_LONG_DOUBLE
+#define LDOUBLE long double
+#else
+#define LDOUBLE double
+#endif
+
+#ifdef HAVE_LONG_LONG
+#define LLONG long long
+#else
+#define LLONG long
+#endif
+
+#ifndef VA_COPY
+#ifdef HAVE_VA_COPY
+#define VA_COPY(dest, src) va_copy(dest, src)
+#else
+#ifdef HAVE___VA_COPY
+#define VA_COPY(dest, src) __va_copy(dest, src)
+#else
+#define VA_COPY(dest, src) (dest) = (src)
+#endif
+#endif
+
+/*
+ * dopr(): poor man's version of doprintf
+ */
+
+/* format read states */
+#define DP_S_DEFAULT 0
+#define DP_S_FLAGS 1
+#define DP_S_MIN 2
+#define DP_S_DOT 3
+#define DP_S_MAX 4
+#define DP_S_MOD 5
+#define DP_S_CONV 6
+#define DP_S_DONE 7
+
+/* format flags - Bits */
+#define DP_F_MINUS (1 << 0)
+#define DP_F_PLUS (1 << 1)
+#define DP_F_SPACE (1 << 2)
+#define DP_F_NUM (1 << 3)
+#define DP_F_ZERO (1 << 4)
+#define DP_F_UP (1 << 5)
+#define DP_F_UNSIGNED (1 << 6)
+
+/* Conversion Flags */
+#define DP_C_CHAR 1
+#define DP_C_SHORT 2
+#define DP_C_LONG 3
+#define DP_C_LDOUBLE 4
+#define DP_C_LLONG 5
+
+/* Chunk types */
+#define CNK_FMT_STR 0
+#define CNK_INT 1
+#define CNK_OCTAL 2
+#define CNK_UINT 3
+#define CNK_HEX 4
+#define CNK_FLOAT 5
+#define CNK_CHAR 6
+#define CNK_STRING 7
+#define CNK_PTR 8
+#define CNK_NUM 9
+#define CNK_PRCNT 10
+
+#define char_to_int(p) ((p)- '0')
+#ifndef MAX
+#define MAX(p,q) (((p) >= (q)) ? (p) : (q))
+#endif
+
+/* yes this really must be a ||. Don't muck with this (tridge) */
+#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
+
+struct pr_chunk {
+ int type; /* chunk type */
+ int num; /* parameter number */
+ int min;
+ int max;
+ int flags;
+ int cflags;
+ int start;
+ int len;
+ LLONG value;
+ LDOUBLE fvalue;
+ char *strvalue;
+ void *pnum;
+ struct pr_chunk *min_star;
+ struct pr_chunk *max_star;
+ struct pr_chunk *next;
+};
+
+struct pr_chunk_x {
+ struct pr_chunk **chunks;
+ int num;
+};
+
+static size_t dopr(char *buffer, size_t maxlen, const char *format,
+ va_list args_in);
+static void fmtstr(char *buffer, size_t *currlen, size_t maxlen,
+ char *value, int flags, int min, int max);
+static void fmtint(char *buffer, size_t *currlen, size_t maxlen,
+ long value, int base, int min, int max, int flags);
+static void fmtfp(char *buffer, size_t *currlen, size_t maxlen,
+ LDOUBLE fvalue, int min, int max, int flags);
+static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c);
+static struct pr_chunk *new_chunk(void);
+static int add_cnk_list_entry(struct pr_chunk_x **list,
+ int max_num, struct pr_chunk *chunk);
+
+static size_t dopr(char *buffer, size_t maxlen, const char *format, va_list args_in)
+{
+ char ch;
+ int state;
+ int pflag;
+ int pnum;
+ int pfirst;
+ size_t currlen;
+ va_list args;
+ const char *base;
+ struct pr_chunk *chunks = NULL;
+ struct pr_chunk *cnk = NULL;
+ struct pr_chunk_x *clist = NULL;
+ int max_pos;
+ size_t ret = (size_t)-1;
+
+ VA_COPY(args, args_in);
+
+ state = DP_S_DEFAULT;
+ pfirst = 1;
+ pflag = 0;
+ pnum = 0;
+
+ max_pos = 0;
+ base = format;
+ ch = *format++;
+
+ /* retrieve the string structure as chunks */
+ while (state != DP_S_DONE) {
+ if (ch == '\0')
+ state = DP_S_DONE;
+
+ switch(state) {
+ case DP_S_DEFAULT:
+
+ if (cnk) {
+ cnk->next = new_chunk();
+ cnk = cnk->next;
+ } else {
+ cnk = new_chunk();
+ }
+ if (!cnk) goto done;
+ if (!chunks) chunks = cnk;
+
+ if (ch == '%') {
+ state = DP_S_FLAGS;
+ ch = *format++;
+ } else {
+ cnk->type = CNK_FMT_STR;
+ cnk->start = format - base -1;
+ while ((ch != '\0') && (ch != '%')) ch = *format++;
+ cnk->len = format - base - cnk->start -1;
+ }
+ break;
+ case DP_S_FLAGS:
+ switch (ch) {
+ case '-':
+ cnk->flags |= DP_F_MINUS;
+ ch = *format++;
+ break;
+ case '+':
+ cnk->flags |= DP_F_PLUS;
+ ch = *format++;
+ break;
+ case ' ':
+ cnk->flags |= DP_F_SPACE;
+ ch = *format++;
+ break;
+ case '#':
+ cnk->flags |= DP_F_NUM;
+ ch = *format++;
+ break;
+ case '0':
+ cnk->flags |= DP_F_ZERO;
+ ch = *format++;
+ break;
+ case 'I':
+ /* internationalization not supported yet */
+ ch = *format++;
+ break;
+ default:
+ state = DP_S_MIN;
+ break;
+ }
+ break;
+ case DP_S_MIN:
+ if (isdigit((unsigned char)ch)) {
+ cnk->min = 10 * cnk->min + char_to_int (ch);
+ ch = *format++;
+ } else if (ch == '$') {
+ if (!pfirst && !pflag) {
+ /* parameters must be all positioned or none */
+ goto done;
+ }
+ if (pfirst) {
+ pfirst = 0;
+ pflag = 1;
+ }
+ if (cnk->min == 0) /* what ?? */
+ goto done;
+ cnk->num = cnk->min;
+ cnk->min = 0;
+ ch = *format++;
+ } else if (ch == '*') {
+ if (pfirst) pfirst = 0;
+ cnk->min_star = new_chunk();
+ if (!cnk->min_star) /* out of memory :-( */
+ goto done;
+ cnk->min_star->type = CNK_INT;
+ if (pflag) {
+ int num;
+ ch = *format++;
+ if (!isdigit((unsigned char)ch)) {
+ /* parameters must be all positioned or none */
+ goto done;
+ }
+ for (num = 0; isdigit((unsigned char)ch); ch = *format++) {
+ num = 10 * num + char_to_int(ch);
+ }
+ cnk->min_star->num = num;
+ if (ch != '$') /* what ?? */
+ goto done;
+ } else {
+ cnk->min_star->num = ++pnum;
+ }
+ max_pos = add_cnk_list_entry(&clist, max_pos, cnk->min_star);
+ if (max_pos == 0) /* out of memory :-( */
+ goto done;
+ ch = *format++;
+ state = DP_S_DOT;
+ } else {
+ if (pfirst) pfirst = 0;
+ state = DP_S_DOT;
+ }
+ break;
+ case DP_S_DOT:
+ if (ch == '.') {
+ state = DP_S_MAX;
+ ch = *format++;
+ } else {
+ state = DP_S_MOD;
+ }
+ break;
+ case DP_S_MAX:
+ if (isdigit((unsigned char)ch)) {
+ if (cnk->max < 0)
+ cnk->max = 0;
+ cnk->max = 10 * cnk->max + char_to_int (ch);
+ ch = *format++;
+ } else if (ch == '$') {
+ if (!pfirst && !pflag) {
+ /* parameters must be all positioned or none */
+ goto done;
+ }
+ if (cnk->max <= 0) /* what ?? */
+ goto done;
+ cnk->num = cnk->max;
+ cnk->max = -1;
+ ch = *format++;
+ } else if (ch == '*') {
+ cnk->max_star = new_chunk();
+ if (!cnk->max_star) /* out of memory :-( */
+ goto done;
+ cnk->max_star->type = CNK_INT;
+ if (pflag) {
+ int num;
+ ch = *format++;
+ if (!isdigit((unsigned char)ch)) {
+ /* parameters must be all positioned or none */
+ goto done;
+ }
+ for (num = 0; isdigit((unsigned char)ch); ch = *format++) {
+ num = 10 * num + char_to_int(ch);
+ }
+ cnk->max_star->num = num;
+ if (ch != '$') /* what ?? */
+ goto done;
+ } else {
+ cnk->max_star->num = ++pnum;
+ }
+ max_pos = add_cnk_list_entry(&clist, max_pos, cnk->max_star);
+ if (max_pos == 0) /* out of memory :-( */
+ goto done;
+
+ ch = *format++;
+ state = DP_S_MOD;
+ } else {
+ state = DP_S_MOD;
+ }
+ break;
+ case DP_S_MOD:
+ switch (ch) {
+ case 'h':
+ cnk->cflags = DP_C_SHORT;
+ ch = *format++;
+ if (ch == 'h') {
+ cnk->cflags = DP_C_CHAR;
+ ch = *format++;
+ }
+ break;
+ case 'l':
+ cnk->cflags = DP_C_LONG;
+ ch = *format++;
+ if (ch == 'l') { /* It's a long long */
+ cnk->cflags = DP_C_LLONG;
+ ch = *format++;
+ }
+ break;
+ case 'L':
+ cnk->cflags = DP_C_LDOUBLE;
+ ch = *format++;
+ break;
+ default:
+ break;
+ }
+ state = DP_S_CONV;
+ break;
+ case DP_S_CONV:
+ if (cnk->num == 0) cnk->num = ++pnum;
+ max_pos = add_cnk_list_entry(&clist, max_pos, cnk);
+ if (max_pos == 0) /* out of memory :-( */
+ goto done;
+
+ switch (ch) {
+ case 'd':
+ case 'i':
+ cnk->type = CNK_INT;
+ break;
+ case 'o':
+ cnk->type = CNK_OCTAL;
+ cnk->flags |= DP_F_UNSIGNED;
+ break;
+ case 'u':
+ cnk->type = CNK_UINT;
+ cnk->flags |= DP_F_UNSIGNED;
+ break;
+ case 'X':
+ cnk->flags |= DP_F_UP;
+ case 'x':
+ cnk->type = CNK_HEX;
+ cnk->flags |= DP_F_UNSIGNED;
+ break;
+ case 'A':
+ /* hex float not supported yet */
+ case 'E':
+ case 'G':
+ case 'F':
+ cnk->flags |= DP_F_UP;
+ case 'a':
+ /* hex float not supported yet */
+ case 'e':
+ case 'f':
+ case 'g':
+ cnk->type = CNK_FLOAT;
+ break;
+ case 'c':
+ cnk->type = CNK_CHAR;
+ break;
+ case 's':
+ cnk->type = CNK_STRING;
+ break;
+ case 'p':
+ cnk->type = CNK_PTR;
+ break;
+ case 'n':
+ cnk->type = CNK_NUM;
+ break;
+ case '%':
+ cnk->type = CNK_PRCNT;
+ break;
+ default:
+ /* Unknown, bail out*/
+ goto done;
+ }
+ ch = *format++;
+ state = DP_S_DEFAULT;
+ break;
+ case DP_S_DONE:
+ break;
+ default:
+ /* hmm? */
+ break; /* some picky compilers need this */
+ }
+ }
+
+ /* retieve the format arguments */
+ for (pnum = 0; pnum < max_pos; pnum++) {
+ int i;
+
+ if (clist[pnum].num == 0) {
+ /* ignoring a parameter should not be permitted
+ * all parameters must be matched at least once
+ * BUT seem some system ignore this rule ...
+ * at least my glibc based system does --SSS
+ */
+#ifdef DEBUG_SNPRINTF
+ printf("parameter at position %d not used\n", pnum+1);
+#endif
+ /* eat the parameter */
+ va_arg (args, int);
+ continue;
+ }
+ for (i = 1; i < clist[pnum].num; i++) {
+ if (clist[pnum].chunks[0]->type != clist[pnum].chunks[i]->type) {
+ /* nooo noo no!
+ * all the references to a parameter
+ * must be of the same type
+ */
+ goto done;
+ }
+ }
+ cnk = clist[pnum].chunks[0];
+ switch (cnk->type) {
+ case CNK_INT:
+ if (cnk->cflags == DP_C_SHORT)
+ cnk->value = va_arg (args, int);
+ else if (cnk->cflags == DP_C_LONG)
+ cnk->value = va_arg (args, long int);
+ else if (cnk->cflags == DP_C_LLONG)
+ cnk->value = va_arg (args, LLONG);
+ else
+ cnk->value = va_arg (args, int);
+
+ for (i = 1; i < clist[pnum].num; i++) {
+ clist[pnum].chunks[i]->value = cnk->value;
+ }
+ break;
+
+ case CNK_OCTAL:
+ case CNK_UINT:
+ case CNK_HEX:
+ if (cnk->cflags == DP_C_SHORT)
+ cnk->value = va_arg (args, unsigned int);
+ else if (cnk->cflags == DP_C_LONG)
+ cnk->value = (long)va_arg (args, unsigned long int);
+ else if (cnk->cflags == DP_C_LLONG)
+ cnk->value = (LLONG)va_arg (args, unsigned LLONG);
+ else
+ cnk->value = (long)va_arg (args, unsigned int);
+
+ for (i = 1; i < clist[pnum].num; i++) {
+ clist[pnum].chunks[i]->value = cnk->value;
+ }
+ break;
+
+ case CNK_FLOAT:
+ if (cnk->cflags == DP_C_LDOUBLE)
+ cnk->fvalue = va_arg (args, LDOUBLE);
+ else
+ cnk->fvalue = va_arg (args, double);
+
+ for (i = 1; i < clist[pnum].num; i++) {
+ clist[pnum].chunks[i]->fvalue = cnk->fvalue;
+ }
+ break;
+
+ case CNK_CHAR:
+ cnk->value = va_arg (args, int);
+
+ for (i = 1; i < clist[pnum].num; i++) {
+ clist[pnum].chunks[i]->value = cnk->value;
+ }
+ break;
+
+ case CNK_STRING:
+ cnk->strvalue = va_arg (args, char *);
+ if (!cnk->strvalue) cnk->strvalue = "(NULL)";
+
+ for (i = 1; i < clist[pnum].num; i++) {
+ clist[pnum].chunks[i]->strvalue = cnk->strvalue;
+ }
+ break;
+
+ case CNK_PTR:
+ cnk->strvalue = va_arg (args, void *);
+ for (i = 1; i < clist[pnum].num; i++) {
+ clist[pnum].chunks[i]->strvalue = cnk->strvalue;
+ }
+ break;
+
+ case CNK_NUM:
+ if (cnk->cflags == DP_C_CHAR)
+ cnk->pnum = va_arg (args, char *);
+ else if (cnk->cflags == DP_C_SHORT)
+ cnk->pnum = va_arg (args, short int *);
+ else if (cnk->cflags == DP_C_LONG)
+ cnk->pnum = va_arg (args, long int *);
+ else if (cnk->cflags == DP_C_LLONG)
+ cnk->pnum = va_arg (args, LLONG *);
+ else
+ cnk->pnum = va_arg (args, int *);
+
+ for (i = 1; i < clist[pnum].num; i++) {
+ clist[pnum].chunks[i]->pnum = cnk->pnum;
+ }
+ break;
+
+ case CNK_PRCNT:
+ break;
+
+ default:
+ /* what ?? */
+ goto done;
+ }
+ }
+ /* print out the actual string from chunks */
+ currlen = 0;
+ cnk = chunks;
+ while (cnk) {
+ int len, min, max;
+
+ if (cnk->min_star) min = cnk->min_star->value;
+ else min = cnk->min;
+ if (cnk->max_star) max = cnk->max_star->value;
+ else max = cnk->max;
+
+ switch (cnk->type) {
+
+ case CNK_FMT_STR:
+ if (maxlen != 0 && maxlen > currlen) {
+ if (maxlen > (currlen + cnk->len)) len = cnk->len;
+ else len = maxlen - currlen;
+
+ memcpy(&(buffer[currlen]), &(base[cnk->start]), len);
+ }
+ currlen += cnk->len;
+
+ break;
+
+ case CNK_INT:
+ case CNK_UINT:
+ fmtint (buffer, &currlen, maxlen, cnk->value, 10, min, max, cnk->flags);
+ break;
+
+ case CNK_OCTAL:
+ fmtint (buffer, &currlen, maxlen, cnk->value, 8, min, max, cnk->flags);
+ break;
+
+ case CNK_HEX:
+ fmtint (buffer, &currlen, maxlen, cnk->value, 16, min, max, cnk->flags);
+ break;
+
+ case CNK_FLOAT:
+ fmtfp (buffer, &currlen, maxlen, cnk->fvalue, min, max, cnk->flags);
+ break;
+
+ case CNK_CHAR:
+ dopr_outch (buffer, &currlen, maxlen, cnk->value);
+ break;
+
+ case CNK_STRING:
+ if (max == -1) {
+ max = strlen(cnk->strvalue);
+ }
+ fmtstr (buffer, &currlen, maxlen, cnk->strvalue, cnk->flags, min, max);
+ break;
+
+ case CNK_PTR:
+ fmtint (buffer, &currlen, maxlen, (long)(cnk->strvalue), 16, min, max, cnk->flags);
+ break;
+
+ case CNK_NUM:
+ if (cnk->cflags == DP_C_CHAR)
+ *((char *)(cnk->pnum)) = (char)currlen;
+ else if (cnk->cflags == DP_C_SHORT)
+ *((short int *)(cnk->pnum)) = (short int)currlen;
+ else if (cnk->cflags == DP_C_LONG)
+ *((long int *)(cnk->pnum)) = (long int)currlen;
+ else if (cnk->cflags == DP_C_LLONG)
+ *((LLONG *)(cnk->pnum)) = (LLONG)currlen;
+ else
+ *((int *)(cnk->pnum)) = (int)currlen;
+ break;
+
+ case CNK_PRCNT:
+ dopr_outch (buffer, &currlen, maxlen, '%');
+ break;
+
+ default:
+ /* what ?? */
+ goto done;
+ }
+ cnk = cnk->next;
+ }
+ if (maxlen != 0) {
+ if (currlen < maxlen - 1)
+ buffer[currlen] = '\0';
+ else if (maxlen > 0)
+ buffer[maxlen - 1] = '\0';
+ }
+ ret = currlen;
+
+done:
+ while (chunks) {
+ cnk = chunks->next;
+ free(chunks);
+ chunks = cnk;
+ }
+ if (clist) {
+ for (pnum = 0; pnum < max_pos; pnum++) {
+ if (clist[pnum].chunks) free(clist[pnum].chunks);
+ }
+ free(clist);
+ }
+ return ret;
+}
+
+static void fmtstr(char *buffer, size_t *currlen, size_t maxlen,
+ char *value, int flags, int min, int max)
+{
+ int padlen, strln; /* amount to pad */
+ int cnt = 0;
+
+#ifdef DEBUG_SNPRINTF
+ printf("fmtstr min=%d max=%d s=[%s]\n", min, max, value);
+#endif
+ if (value == 0) {
+ value = "<NULL>";
+ }
+
+ for (strln = 0; strln < max && value[strln]; ++strln); /* strlen */
+ padlen = min - strln;
+ if (padlen < 0)
+ padlen = 0;
+ if (flags & DP_F_MINUS)
+ padlen = -padlen; /* Left Justify */
+
+ while (padlen > 0) {
+ dopr_outch (buffer, currlen, maxlen, ' ');
+ --padlen;
+ }
+ while (*value && (cnt < max)) {
+ dopr_outch (buffer, currlen, maxlen, *value++);
+ ++cnt;
+ }
+ while (padlen < 0) {
+ dopr_outch (buffer, currlen, maxlen, ' ');
+ ++padlen;
+ }
+}
+
+/* Have to handle DP_F_NUM (ie 0x and 0 alternates) */
+
+static void fmtint(char *buffer, size_t *currlen, size_t maxlen,
+ long value, int base, int min, int max, int flags)
+{
+ int signvalue = 0;
+ unsigned long uvalue;
+ char convert[20];
+ int place = 0;
+ int spadlen = 0; /* amount to space pad */
+ int zpadlen = 0; /* amount to zero pad */
+ int caps = 0;
+
+ if (max < 0)
+ max = 0;
+
+ uvalue = value;
+
+ if(!(flags & DP_F_UNSIGNED)) {
+ if( value < 0 ) {
+ signvalue = '-';
+ uvalue = -value;
+ } else {
+ if (flags & DP_F_PLUS) /* Do a sign (+/i) */
+ signvalue = '+';
+ else if (flags & DP_F_SPACE)
+ signvalue = ' ';
+ }
+ }
+
+ if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
+
+ do {
+ convert[place++] =
+ (caps? "0123456789ABCDEF":"0123456789abcdef")
+ [uvalue % (unsigned)base ];
+ uvalue = (uvalue / (unsigned)base );
+ } while(uvalue && (place < 20));
+ if (place == 20) place--;
+ convert[place] = 0;
+
+ zpadlen = max - place;
+ spadlen = min - MAX (max, place) - (signvalue ? 1 : 0);
+ if (zpadlen < 0) zpadlen = 0;
+ if (spadlen < 0) spadlen = 0;
+ if (flags & DP_F_ZERO) {
+ zpadlen = MAX(zpadlen, spadlen);
+ spadlen = 0;
+ }
+ if (flags & DP_F_MINUS)
+ spadlen = -spadlen; /* Left Justify */
+
+#ifdef DEBUG_SNPRINTF
+ printf("zpad: %d, spad: %d, min: %d, max: %d, place: %d\n",
+ zpadlen, spadlen, min, max, place);
+#endif
+
+ /* Spaces */
+ while (spadlen > 0) {
+ dopr_outch (buffer, currlen, maxlen, ' ');
+ --spadlen;
+ }
+
+ /* Sign */
+ if (signvalue)
+ dopr_outch (buffer, currlen, maxlen, signvalue);
+
+ /* Zeros */
+ if (zpadlen > 0) {
+ while (zpadlen > 0) {
+ dopr_outch (buffer, currlen, maxlen, '0');
+ --zpadlen;
+ }
+ }
+
+ /* Digits */
+ while (place > 0)
+ dopr_outch (buffer, currlen, maxlen, convert[--place]);
+
+ /* Left Justified spaces */
+ while (spadlen < 0) {
+ dopr_outch (buffer, currlen, maxlen, ' ');
+ ++spadlen;
+ }
+}
+
+static LDOUBLE abs_val(LDOUBLE value)
+{
+ LDOUBLE result = value;
+
+ if (value < 0)
+ result = -value;
+
+ return result;
+}
+
+static LDOUBLE POW10(int exp)
+{
+ LDOUBLE result = 1;
+
+ while (exp) {
+ result *= 10;
+ exp--;
+ }
+
+ return result;
+}
+
+static LLONG ROUND(LDOUBLE value)
+{
+ LLONG intpart;
+
+ intpart = (LLONG)value;
+ value = value - intpart;
+ if (value >= 0.5) intpart++;
+
+ return intpart;
+}
+
+/* a replacement for modf that doesn't need the math library. Should
+ be portable, but slow */
+static double my_modf(double x0, double *iptr)
+{
+ int i;
+ long l;
+ double x = x0;
+ double f = 1.0;
+
+ for (i=0;i<100;i++) {
+ l = (long)x;
+ if (l <= (x+1) && l >= (x-1)) break;
+ x *= 0.1;
+ f *= 10.0;
+ }
+
+ if (i == 100) {
+ /* yikes! the number is beyond what we can handle. What do we do? */
+ (*iptr) = 0;
+ return 0;
+ }
+
+ if (i != 0) {
+ double i2;
+ double ret;
+
+ ret = my_modf(x0-l*f, &i2);
+ (*iptr) = l*f + i2;
+ return ret;
+ }
+
+ (*iptr) = l;
+ return x - (*iptr);
+}
+
+
+static void fmtfp (char *buffer, size_t *currlen, size_t maxlen,
+ LDOUBLE fvalue, int min, int max, int flags)
+{
+ int signvalue = 0;
+ double ufvalue;
+ char iconvert[311];
+ char fconvert[311];
+ int iplace = 0;
+ int fplace = 0;
+ int padlen = 0; /* amount to pad */
+ int zpadlen = 0;
+ int caps = 0;
+ int idx;
+ double intpart;
+ double fracpart;
+ double temp;
+
+ /*
+ * AIX manpage says the default is 0, but Solaris says the default
+ * is 6, and sprintf on AIX defaults to 6
+ */
+ if (max < 0)
+ max = 6;
+
+ ufvalue = abs_val (fvalue);
+
+ if (fvalue < 0) {
+ signvalue = '-';
+ } else {
+ if (flags & DP_F_PLUS) { /* Do a sign (+/i) */
+ signvalue = '+';
+ } else {
+ if (flags & DP_F_SPACE)
+ signvalue = ' ';
+ }
+ }
+
+#if 0
+ if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */
+#endif
+
+#if 0
+ if (max == 0) ufvalue += 0.5; /* if max = 0 we must round */
+#endif
+
+ /*
+ * Sorry, we only support 9 digits past the decimal because of our
+ * conversion method
+ */
+ if (max > 9)
+ max = 9;
+
+ /* We "cheat" by converting the fractional part to integer by
+ * multiplying by a factor of 10
+ */
+
+ temp = ufvalue;
+ my_modf(temp, &intpart);
+
+ fracpart = ROUND((POW10(max)) * (ufvalue - intpart));
+
+ if (fracpart >= POW10(max)) {
+ intpart++;
+ fracpart -= POW10(max);
+ }
+
+
+ /* Convert integer part */
+ do {
+ temp = intpart*0.1;
+ my_modf(temp, &intpart);
+ idx = (int) ((temp -intpart +0.05)* 10.0);
+ /* idx = (int) (((double)(temp*0.1) -intpart +0.05) *10.0); */
+ /* printf ("%llf, %f, %x\n", temp, intpart, idx); */
+ iconvert[iplace++] =
+ (caps? "0123456789ABCDEF":"0123456789abcdef")[idx];
+ } while (intpart && (iplace < 311));
+ if (iplace == 311) iplace--;
+ iconvert[iplace] = 0;
+
+ /* Convert fractional part */
+ if (fracpart)
+ {
+ do {
+ temp = fracpart*0.1;
+ my_modf(temp, &fracpart);
+ idx = (int) ((temp -fracpart +0.05)* 10.0);
+ /* idx = (int) ((((temp/10) -fracpart) +0.05) *10); */
+ /* printf ("%lf, %lf, %ld\n", temp, fracpart, idx ); */
+ fconvert[fplace++] =
+ (caps? "0123456789ABCDEF":"0123456789abcdef")[idx];
+ } while(fracpart && (fplace < 311));
+ if (fplace == 311) fplace--;
+ }
+ fconvert[fplace] = 0;
+
+ /* -1 for decimal point, another -1 if we are printing a sign */
+ padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0);
+ zpadlen = max - fplace;
+ if (zpadlen < 0) zpadlen = 0;
+ if (padlen < 0)
+ padlen = 0;
+ if (flags & DP_F_MINUS)
+ padlen = -padlen; /* Left Justify */
+
+ if ((flags & DP_F_ZERO) && (padlen > 0)) {
+ if (signvalue) {
+ dopr_outch (buffer, currlen, maxlen, signvalue);
+ --padlen;
+ signvalue = 0;
+ }
+ while (padlen > 0) {
+ dopr_outch (buffer, currlen, maxlen, '0');
+ --padlen;
+ }
+ }
+ while (padlen > 0) {
+ dopr_outch (buffer, currlen, maxlen, ' ');
+ --padlen;
+ }
+ if (signvalue)
+ dopr_outch (buffer, currlen, maxlen, signvalue);
+
+ while (iplace > 0)
+ dopr_outch (buffer, currlen, maxlen, iconvert[--iplace]);
+
+#ifdef DEBUG_SNPRINTF
+ printf("fmtfp: fplace=%d zpadlen=%d\n", fplace, zpadlen);
+#endif
+
+ /*
+ * Decimal point. This should probably use locale to find the correct
+ * char to print out.
+ */
+ if (max > 0) {
+ dopr_outch (buffer, currlen, maxlen, '.');
+
+ while (zpadlen > 0) {
+ dopr_outch (buffer, currlen, maxlen, '0');
+ --zpadlen;
+ }
+
+ while (fplace > 0)
+ dopr_outch (buffer, currlen, maxlen, fconvert[--fplace]);
+ }
+
+ while (padlen < 0) {
+ dopr_outch (buffer, currlen, maxlen, ' ');
+ ++padlen;
+ }
+}
+
+static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c)
+{
+ if (*currlen < maxlen) {
+ buffer[(*currlen)] = c;
+ }
+ (*currlen)++;
+}
+
+static struct pr_chunk *new_chunk(void) {
+ struct pr_chunk *new_c = (struct pr_chunk *)malloc(sizeof(struct pr_chunk));
+
+ if ( !new_c )
+ return NULL;
+
+ new_c->type = 0;
+ new_c->num = 0;
+ new_c->min = 0;
+ new_c->min_star = NULL;
+ new_c->max = -1;
+ new_c->max_star = NULL;
+ new_c->flags = 0;
+ new_c->cflags = 0;
+ new_c->start = 0;
+ new_c->len = 0;
+ new_c->value = 0;
+ new_c->fvalue = 0;
+ new_c->strvalue = NULL;
+ new_c->pnum = NULL;
+ new_c->next = NULL;
+
+ return new_c;
+}
+
+static int add_cnk_list_entry(struct pr_chunk_x **list,
+ int max_num, struct pr_chunk *chunk) {
+ struct pr_chunk_x *l;
+ struct pr_chunk **c;
+ int max;
+ int cnum;
+ int i, pos;
+
+ if (chunk->num > max_num) {
+ max = chunk->num;
+
+ if (*list == NULL) {
+ l = (struct pr_chunk_x *)malloc(sizeof(struct pr_chunk_x) * max);
+ pos = 0;
+ } else {
+ l = (struct pr_chunk_x *)realloc(*list, sizeof(struct pr_chunk_x) * max);
+ pos = max_num;
+ }
+ if (l == NULL) {
+ for (i = 0; i < max; i++) {
+ if ((*list)[i].chunks) free((*list)[i].chunks);
+ }
+ return 0;
+ }
+ for (i = pos; i < max; i++) {
+ l[i].chunks = NULL;
+ l[i].num = 0;
+ }
+ } else {
+ l = *list;
+ max = max_num;
+ }
+
+ i = chunk->num - 1;
+ cnum = l[i].num + 1;
+ if (l[i].chunks == NULL) {
+ c = (struct pr_chunk **)malloc(sizeof(struct pr_chunk *) * cnum);
+ } else {
+ c = (struct pr_chunk **)realloc(l[i].chunks, sizeof(struct pr_chunk *) * cnum);
+ }
+ if (c == NULL) {
+ for (i = 0; i < max; i++) {
+ if (l[i].chunks) free(l[i].chunks);
+ }
+ return 0;
+ }
+ c[l[i].num] = chunk;
+ l[i].chunks = c;
+ l[i].num = cnum;
+
+ *list = l;
+ return max;
+}
+
+ int smb_vsnprintf (char *str, size_t count, const char *fmt, va_list args)
+{
+ return dopr(str, count, fmt, args);
+}
+#define vsnprintf smb_vsnprintf
+#endif
+
+/* yes this really must be a ||. Don't muck with this (tridge)
+ *
+ * The logic for these two is that we need our own definition if the
+ * OS *either* has no definition of *sprintf, or if it does have one
+ * that doesn't work properly according to the autoconf test.
+ */
+#if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF)
+int smb_snprintf(char *str,size_t count,const char *fmt,...)
+{
+ size_t ret;
+ va_list ap;
+
+ va_start(ap, fmt);
+ ret = vsnprintf(str, count, fmt, ap);
+ va_end(ap);
+ return ret;
+}
+#define snprintf smb_snprintf
+#endif
+
+#endif
+
+#ifndef HAVE_VASPRINTF
+ int vasprintf(char **ptr, const char *format, va_list ap)
+{
+ int ret;
+ va_list ap2;
+
+ VA_COPY(ap2, ap);
+
+ ret = vsnprintf(NULL, 0, format, ap2);
+ if (ret <= 0) return ret;
+
+ (*ptr) = (char *)malloc(ret+1);
+ if (!*ptr) return -1;
+
+ VA_COPY(ap2, ap);
+
+ ret = vsnprintf(*ptr, ret+1, format, ap2);
+
+ return ret;
+}
+#endif
+
+
+#ifndef HAVE_ASPRINTF
+ int asprintf(char **ptr, const char *format, ...)
+{
+ va_list ap;
+ int ret;
+
+ *ptr = NULL;
+ va_start(ap, format);
+ ret = vasprintf(ptr, format, ap);
+ va_end(ap);
+
+ return ret;
+}
+#endif
+
+#ifdef TEST_SNPRINTF
+
+ int sprintf(char *str,const char *fmt,...);
+
+ int main (void)
+{
+ char buf1[1024];
+ char buf2[1024];
+ char *buf3;
+ char *fp_fmt[] = {
+ "%1.1f",
+ "%-1.5f",
+ "%1.5f",
+ "%123.9f",
+ "%10.5f",
+ "% 10.5f",
+ "%+22.9f",
+ "%+4.9f",
+ "%01.3f",
+ "%4f",
+ "%3.1f",
+ "%3.2f",
+ "%.0f",
+ "%f",
+ "%-8.8f",
+ "%-9.9f",
+ NULL
+ };
+ double fp_nums[] = { 6442452944.1234, -1.5, 134.21, 91340.2, 341.1234, 203.9, 0.96, 0.996,
+ 0.9996, 1.996, 4.136, 5.030201, 0.00205,
+ /* END LIST */ 0};
+ char *int_fmt[] = {
+ "%-1.5d",
+ "%1.5d",
+ "%123.9d",
+ "%5.5d",
+ "%10.5d",
+ "% 10.5d",
+ "%+22.33d",
+ "%01.3d",
+ "%4d",
+ "%d",
+ NULL
+ };
+ long int_nums[] = { -1, 134, 91340, 341, 0203, 0, 1234567890};
+ char *str_fmt[] = {
+ "%10.5s",
+ "%-10.5s",
+ "%5.10s",
+ "%-5.10s",
+ "%10.1s",
+ "%0.10s",
+ "%10.0s",
+ "%1.10s",
+ "%s",
+ "%.1s",
+ "%.10s",
+ "%10s",
+ NULL
+ };
+ char *str_vals[] = {"hello", "a", "", "a longer string", NULL};
+ int x, y;
+ int fail = 0;
+ int num = 0;
+ int l1, l2;
+
+ printf ("Testing snprintf format codes against system sprintf...\n");
+
+ for (x = 0; fp_fmt[x] ; x++) {
+ for (y = 0; fp_nums[y] != 0 ; y++) {
+ buf1[0] = buf2[0] = '\0';
+ l1 = snprintf(NULL, 0, fp_fmt[x], fp_nums[y]);
+ l2 = snprintf(buf1, sizeof(buf1), fp_fmt[x], fp_nums[y]);
+ sprintf (buf2, fp_fmt[x], fp_nums[y]);
+ buf1[1023] = buf1[1023] = '\0';
+ if (strcmp (buf1, buf2) || (l1 != l2)) {
+ printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
+ fp_fmt[x], l1, buf1, l2, buf2);
+ fail++;
+ }
+ num++;
+ }
+ }
+
+ for (x = 0; int_fmt[x] ; x++) {
+ for (y = 0; int_nums[y] != 0 ; y++) {
+ buf1[0] = buf2[0] = '\0';
+ l1 = snprintf(NULL, 0, int_fmt[x], int_nums[y]);
+ l2 = snprintf(buf1, sizeof(buf1), int_fmt[x], int_nums[y]);
+ sprintf (buf2, int_fmt[x], int_nums[y]);
+ buf1[1023] = buf1[1023] = '\0';
+ if (strcmp (buf1, buf2) || (l1 != l2)) {
+ printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
+ int_fmt[x], l1, buf1, l2, buf2);
+ fail++;
+ }
+ num++;
+ }
+ }
+
+ for (x = 0; str_fmt[x] ; x++) {
+ for (y = 0; str_vals[y] != 0 ; y++) {
+ buf1[0] = buf2[0] = '\0';
+ l1 = snprintf(NULL, 0, str_fmt[x], str_vals[y]);
+ l2 = snprintf(buf1, sizeof(buf1), str_fmt[x], str_vals[y]);
+ sprintf (buf2, str_fmt[x], str_vals[y]);
+ buf1[1023] = buf1[1023] = '\0';
+ if (strcmp (buf1, buf2) || (l1 != l2)) {
+ printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
+ str_fmt[x], l1, buf1, l2, buf2);
+ fail++;
+ }
+ num++;
+ }
+ }
+
+#define BUFSZ 2048
+
+ buf1[0] = buf2[0] = '\0';
+ if ((buf3 = malloc(BUFSZ)) == NULL) {
+ fail++;
+ } else {
+ num++;
+ memset(buf3, 'a', BUFSZ);
+ snprintf(buf1, sizeof(buf1), "%.*s", 1, buf3);
+ buf1[1023] = '\0';
+ if (strcmp(buf1, "a") != 0) {
+ printf("length limit buf1 '%s' expected 'a'\n", buf1);
+ fail++;
+ }
+ }
+
+ buf1[0] = buf2[0] = '\0';
+ l1 = snprintf(buf1, sizeof(buf1), "%4$*1$d %2$s %3$*1$.*1$f", 3, "pos test", 12.3456, 9);
+ l2 = sprintf(buf2, "%4$*1$d %2$s %3$*1$.*1$f", 3, "pos test", 12.3456, 9);
+ buf1[1023] = buf1[1023] = '\0';
+ if (strcmp(buf1, buf2) || (l1 != l2)) {
+ printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
+ "%4$*1$d %2$s %3$*1$.*1$f", l1, buf1, l2, buf2);
+ fail++;
+ }
+
+ buf1[0] = buf2[0] = '\0';
+ l1 = snprintf(buf1, sizeof(buf1), "%4$*4$d %2$s %3$*4$.*4$f", 3, "pos test", 12.3456, 9);
+ l2 = sprintf(buf2, "%4$*4$d %2$s %3$*4$.*4$f", 3, "pos test", 12.3456, 9);
+ buf1[1023] = buf1[1023] = '\0';
+ if (strcmp(buf1, buf2)) {
+ printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
+ "%4$*1$d %2$s %3$*1$.*1$f", l1, buf1, l2, buf2);
+ fail++;
+ }
+#if 0
+ buf1[0] = buf2[0] = '\0';
+ l1 = snprintf(buf1, sizeof(buf1), "%lld", (LLONG)1234567890);
+ l2 = sprintf(buf2, "%lld", (LLONG)1234567890);
+ buf1[1023] = buf1[1023] = '\0';
+ if (strcmp(buf1, buf2)) {
+ printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
+ "%lld", l1, buf1, l2, buf2);
+ fail++;
+ }
+
+ buf1[0] = buf2[0] = '\0';
+ l1 = snprintf(buf1, sizeof(buf1), "%Lf", (LDOUBLE)890.1234567890123);
+ l2 = sprintf(buf2, "%Lf", (LDOUBLE)890.1234567890123);
+ buf1[1023] = buf1[1023] = '\0';
+ if (strcmp(buf1, buf2)) {
+ printf("snprintf doesn't match Format: %s\n\tsnprintf(%d) = [%s]\n\t sprintf(%d) = [%s]\n",
+ "%Lf", l1, buf1, l2, buf2);
+ fail++;
+ }
+#endif
+ printf ("%d tests failed out of %d.\n", fail, num);
+
+ printf("seeing how many digits we support\n");
+ {
+ double v0 = 0.12345678901234567890123456789012345678901;
+ for (x=0; x<100; x++) {
+ double p = pow(10, x);
+ double r = v0*p;
+ snprintf(buf1, sizeof(buf1), "%1.1f", r);
+ sprintf(buf2, "%1.1f", r);
+ if (strcmp(buf1, buf2)) {
+ printf("we seem to support %d digits\n", x-1);
+ break;
+ }
+ }
+ }
+
+ return 0;
+}
+#endif /* TEST_SNPRINTF */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 15:30:15 +0000