diff options
| -rw-r--r-- | payloads/libpayload/include/string.h | 10 | ||||
| -rw-r--r-- | payloads/libpayload/libc/Makefile.inc | 1 | ||||
| -rw-r--r-- | payloads/libpayload/libc/strlcpy.c | 51 |
3 files changed, 61 insertions, 1 deletions
diff --git a/payloads/libpayload/include/string.h b/payloads/libpayload/include/string.h index 88054e017b..9e4f791a7d 100644 --- a/payloads/libpayload/include/string.h +++ b/payloads/libpayload/include/string.h @@ -55,7 +55,6 @@ int strncasecmp(const char *s1, const char *s2, size_t maxlen); char *strncpy(char *d, const char *s, size_t n); char *strcpy(char *d, const char *s); char *strncat(char *d, const char *s, size_t n); -size_t strlcat(char *d, const char *s, size_t n); char *strcat(char *d, const char *s); char *strchr(const char *s, int c); char *strrchr(const char *s, int c); @@ -68,4 +67,13 @@ char* strtok(char *str, const char *delim); char* strtok_r(char *str, const char *delim, char **ptr); /** @} */ +/** + * @defgroup string OpenBSD based safe string functions + * @{ + */ +size_t strlcpy(char *d, const char *s, size_t n); +size_t strlcat(char *d, const char *s, size_t n); +/** @} */ + + #endif diff --git a/payloads/libpayload/libc/Makefile.inc b/payloads/libpayload/libc/Makefile.inc index 4ec2a02c78..e5c626fc11 100644 --- a/payloads/libpayload/libc/Makefile.inc +++ b/payloads/libpayload/libc/Makefile.inc @@ -33,6 +33,7 @@ libc-$(CONFIG_LIBC) += memory.c ctype.c ipchecksum.c lib.c libc-$(CONFIG_LIBC) += rand.c time.c exec.c libc-$(CONFIG_LIBC) += readline.c getopt_long.c sysinfo.c libc-$(CONFIG_LIBC) += args.c strings.c +libc-$(CONFIG_LIBC) += strlcpy.c # should be moved to coreboot directory libc-$(CONFIG_LAR) += lar.c diff --git a/payloads/libpayload/libc/strlcpy.c b/payloads/libpayload/libc/strlcpy.c new file mode 100644 index 0000000000..d32b6590f1 --- /dev/null +++ b/payloads/libpayload/libc/strlcpy.c @@ -0,0 +1,51 @@ +/* $OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $ */ + +/* + * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> +#include <string.h> + +/* + * Copy src to string dst of size siz. At most siz-1 characters + * will be copied. Always NUL terminates (unless siz == 0). + * Returns strlen(src); if retval >= siz, truncation occurred. + */ +size_t +strlcpy(char *dst, const char *src, size_t siz) +{ + char *d = dst; + const char *s = src; + size_t n = siz; + + /* Copy as many bytes as will fit */ + if (n != 0) { + while (--n != 0) { + if ((*d++ = *s++) == '\0') + break; + } + } + + /* Not enough room in dst, add NUL and traverse rest of src */ + if (n == 0) { + if (siz != 0) + *d = '\0'; /* NUL-terminate dst */ + while (*s++) + ; + } + + return(s - src - 1); /* count does not include NUL */ +} |