0,0 → 1,178 |
/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
* Copyright (C) 1998 by Wes Peters <wes@softweyr.com> |
* Copyright (c) 1988, 1993 The Regents of the University of California. |
* All rights reserved by all copyright holders. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions are met: |
* |
* Redistributions of source code must retain the above copyright notice, this |
* list of conditions and the following disclaimer. |
* |
* Redistributions in binary form must reproduce the above copyright notice, |
* this list of conditions and the following disclaimer in the documentation |
* and/or other materials provided with the distribution. |
* |
* Neither the name of the original program's authors nor the names of its |
* contributors may be used to endorse or promote products derived from this |
* software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
* POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/* NOTES: |
* 1 - Various functions were adapted from FreeBSD (copyright holders noted above) |
* these functions are identified with comments. |
* |
* 2 - Some of these have since appeared in libc. They remain here for various |
* reasons, such as the eventual integration of garbage collection for things |
* that allocate memory and don't automatically free it. |
* |
* 3 - Things that expect a pointer to an allocated string do _no_ sanity checking |
* if developing on a simulator with no debugger, take care :) |
*/ |
|
#include <stdio.h> |
#include <string.h> |
#include <stdarg.h> |
#include <stdlib.h> |
#include <stdarg.h> |
|
#include "config.h" |
#include "errors.h" |
#include "util.h" |
|
/* some platforms do not have strdup, implement it here. |
* Returns a pointer to an allocated string or NULL on failure */ |
char * cli_strdup(const char *s1) |
{ |
size_t len = strlen(s1) + 1; |
void *ret = malloc(len); |
|
if (ret == NULL) |
return (char *) NULL; |
|
return (char *) memcpy(ret, s1, len); |
} |
|
/* |
* Take a previously allocated string (s1), re-size it to accept s2 and copy |
* the contents of s2 into s1. |
* Return -1 on failure, or the length of the copied string on success. |
*/ |
int cli_redup(char **s1, const char *s2) |
{ |
size_t len = strlen(s2) + 1; |
|
if (! len) |
return -1; |
|
*s1 = realloc(*s1, len); |
|
if (*s1 == NULL) |
return -1; |
|
memset(*s1, 0, sizeof(*s1)); |
memcpy(*s1, s2, len); |
return (int) len; |
} |
|
/* An asprintf() for concantenating paths. Allocates the system PATH_MAX value, |
* expands the formatted string and re-sizes the block s1 points to accordingly. |
* |
* Returns the length of the new s1 on success, -1 on failure. On failure, an |
* attempt is made to return s1 unmodified for sanity, in this case 0 is returned. |
* to indicate that s1 was not modified. |
* |
* FIXME: ugly hack to get around asprintf(), if you use this, CHECK ITS VALUE! */ |
int cli_psprintf(char **s1, const char *fmt, ...) |
{ |
va_list ap; |
size_t needed, base = PATH_MAX + 1; |
char *tmp = (char *) malloc(base); |
|
if (NULL == tmp) |
return -1; |
|
char *orig = *s1; |
|
memset(tmp, 0, sizeof(tmp)); |
va_start(ap, fmt); |
vsnprintf(tmp, base, fmt, ap); |
va_end(ap); |
needed = strlen(tmp) + 1; |
*s1 = realloc(*s1, needed); |
if (NULL == *s1) { |
*s1 = realloc(*s1, strlen(orig) + 1); |
if (NULL == *s1) { |
free(tmp); |
return -1; |
} |
memset(*s1, 0, sizeof(*s1)); |
memcpy(*s1, orig, strlen(orig) + 1); |
free(tmp); |
return 0; |
} |
memset(*s1, 0, sizeof(*s1)); |
memcpy(*s1, tmp, needed); |
free(tmp); |
|
return (int) needed; |
} |
|
/* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */ |
char * cli_strtok_r(char *s, const char *delim, char **last) |
{ |
char *spanp, *tok; |
int c, sc; |
|
if (s == NULL && (s = *last) == NULL) |
return (NULL); |
|
cont: |
c = *s++; |
for (spanp = (char *)delim; (sc = *spanp++) != 0;) { |
if (c == sc) |
goto cont; |
} |
|
if (c == 0) { /* no non-delimiter characters */ |
*last = NULL; |
return (NULL); |
} |
|
tok = s - 1; |
|
for (;;) { |
c = *s++; |
spanp = (char *)delim; |
do { |
if ((sc = *spanp++) == c) { |
if (c == 0) |
s = NULL; |
else |
s[-1] = '\0'; |
*last = s; |
return (tok); |
} |
} while (sc != 0); |
} |
} |
|
/* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */ |
char * cli_strtok(char *s, const char *delim) |
{ |
static char *last; |
|
return (cli_strtok_r(s, delim, &last)); |
} |