embedaddon/sudo/common/lbuf.c - diff

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Diff for /embedaddon/sudo/common/lbuf.c between versions 1.1.1.3 and 1.1.1.4

version 1.1.1.3, 2012/10/09 09:29:52	version 1.1.1.4, 2013/07/22 10:46:11
Line 1	Line 1
/*	/*
* Copyright (c) 2007-2011 Todd C. Miller <Todd.Miller@courtesan.com>	* Copyright (c) 2007-2013 Todd C. Miller <Todd.Miller@courtesan.com>
*	*
* Permission to use, copy, modify, and distribute this software for any	* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above	* purpose with or without fee is hereby granted, provided that the above
Line 19	Line 19
#include <config.h>	#include <config.h>

#include <sys/types.h>	#include <sys/types.h>
#include <sys/param.h>
#include <stdio.h>	#include <stdio.h>
#ifdef STDC_HEADERS	#ifdef STDC_HEADERS
# include <stdlib.h>	# include <stdlib.h>
Line 77 lbuf_destroy(struct lbuf *lbuf)	Line 76 lbuf_destroy(struct lbuf *lbuf)
debug_return;	debug_return;
}	}

	static void
	lbuf_expand(struct lbuf *lbuf, size_t extra)
	{
	if (lbuf->len + extra + 1 >= lbuf->size) {
	do {
	lbuf->size += 256;
	} while (lbuf->len + extra + 1 >= lbuf->size);
	lbuf->buf = erealloc(lbuf->buf, lbuf->size);
	}
	}

/*	/*
* Parse the format and append strings, only %s and %% escapes are supported.	* Parse the format and append strings, only %s and %% escapes are supported.
* Any characters in set are quoted with a backslash.	* Any characters in set are quoted with a backslash.
Line 86 lbuf_append_quoted(struct lbuf lbuf, const char set,	Line 96 lbuf_append_quoted(struct lbuf lbuf, const char set,
{	{
va_list ap;	va_list ap;
int len;	int len;
char cp, s = NULL;	char cp, s;
debug_decl(lbuf_append_quoted, SUDO_DEBUG_UTIL)	debug_decl(lbuf_append_quoted, SUDO_DEBUG_UTIL)

va_start(ap, fmt);	va_start(ap, fmt);
while (*fmt != '\0') {	while (*fmt != '\0') {
len = 1;
if (fmt[0] == '%' && fmt[1] == 's') {	if (fmt[0] == '%' && fmt[1] == 's') {
s = va_arg(ap, char *);	if ((s = va_arg(ap, char *)) == NULL)
len = strlen(s);	goto done;
}	while ((cp = strpbrk(s, set)) != NULL) {
/* Assume worst case that all chars must be escaped. */	len = (int)(cp - s);
if (lbuf->len + (len * 2) + 1 >= lbuf->size) {	lbuf_expand(lbuf, len + 2);
do {	memcpy(lbuf->buf + lbuf->len, s, len);
lbuf->size += 256;	lbuf->len += len;
} while (lbuf->len + len + 1 >= lbuf->size);	lbuf->buf[lbuf->len++] = '\\';
lbuf->buf = erealloc(lbuf->buf, lbuf->size);	lbuf->buf[lbuf->len++] = *cp;
}	s = cp + 1;
if (*fmt == '%') {
if (*(++fmt) == 's') {
while ((cp = strpbrk(s, set)) != NULL) {
len = (int)(cp - s);
memcpy(lbuf->buf + lbuf->len, s, len);
lbuf->len += len;
lbuf->buf[lbuf->len++] = '\\';
lbuf->buf[lbuf->len++] = *cp;
s = cp + 1;
}
if (*s != '\0') {
len = strlen(s);
memcpy(lbuf->buf + lbuf->len, s, len);
lbuf->len += len;
}
fmt++;
continue;
}	}
	if (*s != '\0') {
	len = strlen(s);
	lbuf_expand(lbuf, len);
	memcpy(lbuf->buf + lbuf->len, s, len);
	lbuf->len += len;
	}
	fmt += 2;
	continue;
}	}
	lbuf_expand(lbuf, 2);
if (strchr(set, *fmt) != NULL)	if (strchr(set, *fmt) != NULL)
lbuf->buf[lbuf->len++] = '\\';	lbuf->buf[lbuf->len++] = '\\';
lbuf->buf[lbuf->len++] = *fmt++;	lbuf->buf[lbuf->len++] = *fmt++;
}	}
lbuf->buf[lbuf->len] = '\0';	done:
	if (lbuf->size != 0)
	lbuf->buf[lbuf->len] = '\0';
va_end(ap);	va_end(ap);

debug_return;	debug_return;
Line 140 lbuf_append(struct lbuf lbuf, const char fmt, ...)	Line 143 lbuf_append(struct lbuf lbuf, const char fmt, ...)
{	{
va_list ap;	va_list ap;
int len;	int len;
char *s = NULL;	char *s;
debug_decl(lbuf_append, SUDO_DEBUG_UTIL)	debug_decl(lbuf_append, SUDO_DEBUG_UTIL)

va_start(ap, fmt);	va_start(ap, fmt);
while (*fmt != '\0') {	while (*fmt != '\0') {
len = 1;
if (fmt[0] == '%' && fmt[1] == 's') {	if (fmt[0] == '%' && fmt[1] == 's') {
s = va_arg(ap, char *);	if ((s = va_arg(ap, char *)) == NULL)
	goto done;
len = strlen(s);	len = strlen(s);
	lbuf_expand(lbuf, len);
	memcpy(lbuf->buf + lbuf->len, s, len);
	lbuf->len += len;
	fmt += 2;
	continue;
}	}
if (lbuf->len + len + 1 >= lbuf->size) {	lbuf_expand(lbuf, 1);
do {
lbuf->size += 256;
} while (lbuf->len + len + 1 >= lbuf->size);
lbuf->buf = erealloc(lbuf->buf, lbuf->size);
}
if (*fmt == '%') {
if (*(++fmt) == 's') {
memcpy(lbuf->buf + lbuf->len, s, len);
lbuf->len += len;
fmt++;
continue;
}
}
lbuf->buf[lbuf->len++] = *fmt++;	lbuf->buf[lbuf->len++] = *fmt++;
}	}
lbuf->buf[lbuf->len] = '\0';	done:
	if (lbuf->size != 0)
	lbuf->buf[lbuf->len] = '\0';
va_end(ap);	va_end(ap);

debug_return;	debug_return;

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Removed from v.1.1.1.3
changed lines
	Added in v.1.1.1.4