diff options
Diffstat (limited to 'tar/util.c')
| -rw-r--r-- | tar/util.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/tar/util.c b/tar/util.c index 8ebec64c48d9..5a4ab0b3a0fa 100644 --- a/tar/util.c +++ b/tar/util.c @@ -63,7 +63,7 @@ __FBSDID("$FreeBSD: src/usr.bin/tar/util.c,v 1.23 2008/12/15 06:00:25 kientzle E #include "err.h" #include "passphrase.h" -static size_t bsdtar_expand_char(char *, size_t, char); +static size_t bsdtar_expand_char(char *, size_t, size_t, char); static const char *strip_components(const char *path, int elements); #if defined(_WIN32) && !defined(__CYGWIN__) @@ -173,12 +173,12 @@ safe_fprintf(FILE *f, const char *fmt, ...) /* Not printable, format the bytes. */ while (n-- > 0) i += (unsigned)bsdtar_expand_char( - outbuff, i, *p++); + outbuff, sizeof(outbuff), i, *p++); } } else { /* After any conversion failure, don't bother * trying to convert the rest. */ - i += (unsigned)bsdtar_expand_char(outbuff, i, *p++); + i += (unsigned)bsdtar_expand_char(outbuff, sizeof(outbuff), i, *p++); try_wc = 0; } @@ -200,7 +200,7 @@ safe_fprintf(FILE *f, const char *fmt, ...) * Render an arbitrary sequence of bytes into printable ASCII characters. */ static size_t -bsdtar_expand_char(char *buff, size_t offset, char c) +bsdtar_expand_char(char *buff, size_t buffsize, size_t offset, char c) { size_t i = offset; @@ -221,7 +221,7 @@ bsdtar_expand_char(char *buff, size_t offset, char c) case '\v': buff[i++] = 'v'; break; case '\\': buff[i++] = '\\'; break; default: - sprintf(buff + i, "%03o", 0xFF & (int)c); + snprintf(buff + i, buffsize - i, "%03o", 0xFF & (int)c); i += 3; } } @@ -309,11 +309,12 @@ set_chdir(struct bsdtar *bsdtar, const char *newdir) /* The -C /foo -C bar case; concatenate */ char *old_pending = bsdtar->pending_chdir; size_t old_len = strlen(old_pending); - bsdtar->pending_chdir = malloc(old_len + strlen(newdir) + 2); + size_t new_len = old_len + strlen(newdir) + 2; + bsdtar->pending_chdir = malloc(new_len); if (old_pending[old_len - 1] == '/') old_pending[old_len - 1] = '\0'; if (bsdtar->pending_chdir != NULL) - sprintf(bsdtar->pending_chdir, "%s/%s", + snprintf(bsdtar->pending_chdir, new_len, "%s/%s", old_pending, newdir); free(old_pending); } @@ -695,7 +696,7 @@ list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry) /* Use uname if it's present, else uid. */ p = archive_entry_uname(entry); if ((p == NULL) || (*p == '\0')) { - sprintf(tmp, "%lu ", + snprintf(tmp, sizeof(tmp), "%lu ", (unsigned long)archive_entry_uid(entry)); p = tmp; } @@ -710,7 +711,7 @@ list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry) fprintf(out, "%s", p); w = strlen(p); } else { - sprintf(tmp, "%lu", + snprintf(tmp, sizeof(tmp), "%lu", (unsigned long)archive_entry_gid(entry)); w = strlen(tmp); fprintf(out, "%s", tmp); @@ -723,7 +724,7 @@ list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry) */ if (archive_entry_filetype(entry) == AE_IFCHR || archive_entry_filetype(entry) == AE_IFBLK) { - sprintf(tmp, "%lu,%lu", + snprintf(tmp, sizeof(tmp), "%lu,%lu", (unsigned long)archive_entry_rdevmajor(entry), (unsigned long)archive_entry_rdevminor(entry)); } else { |