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-rw-r--r--builtin-log.c2
-rw-r--r--builtin-tar-tree.c4
-rw-r--r--cache.h2
-rw-r--r--config.c6
-rw-r--r--http-fetch.c10
-rw-r--r--http-push.c10
-rw-r--r--ident.c5
-rw-r--r--path.c13
-rw-r--r--sha1_name.c3
9 files changed, 28 insertions, 27 deletions
diff --git a/builtin-log.c b/builtin-log.c
index 29a885121d..5b0ea28346 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -112,7 +112,7 @@ static void reopen_stdout(struct commit *commit, int nr, int keep_subject)
int len = 0;
if (output_directory) {
- strncpy(filename, output_directory, 1010);
+ safe_strncpy(filename, output_directory, 1010);
len = strlen(filename);
if (filename[len - 1] != '/')
filename[len++] = '/';
diff --git a/builtin-tar-tree.c b/builtin-tar-tree.c
index 58a8ccd4d6..f6310b9032 100644
--- a/builtin-tar-tree.c
+++ b/builtin-tar-tree.c
@@ -240,8 +240,8 @@ static void write_entry(const unsigned char *sha1, struct strbuf *path,
/* XXX: should we provide more meaningful info here? */
sprintf(header.uid, "%07o", 0);
sprintf(header.gid, "%07o", 0);
- strncpy(header.uname, "git", 31);
- strncpy(header.gname, "git", 31);
+ safe_strncpy(header.uname, "git", sizeof(header.uname));
+ safe_strncpy(header.gname, "git", sizeof(header.gname));
sprintf(header.devmajor, "%07o", 0);
sprintf(header.devminor, "%07o", 0);
diff --git a/cache.h b/cache.h
index d5d7fe4f8c..f630cf4bfa 100644
--- a/cache.h
+++ b/cache.h
@@ -210,7 +210,7 @@ int git_mkstemp(char *path, size_t n, const char *template);
int adjust_shared_perm(const char *path);
int safe_create_leading_directories(char *path);
-char *safe_strncpy(char *, const char *, size_t);
+size_t safe_strncpy(char *, const char *, size_t);
char *enter_repo(char *path, int strict);
/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
diff --git a/config.c b/config.c
index c47497001e..984c75f5dd 100644
--- a/config.c
+++ b/config.c
@@ -280,17 +280,17 @@ int git_default_config(const char *var, const char *value)
}
if (!strcmp(var, "user.name")) {
- strncpy(git_default_name, value, sizeof(git_default_name));
+ safe_strncpy(git_default_name, value, sizeof(git_default_name));
return 0;
}
if (!strcmp(var, "user.email")) {
- strncpy(git_default_email, value, sizeof(git_default_email));
+ safe_strncpy(git_default_email, value, sizeof(git_default_email));
return 0;
}
if (!strcmp(var, "i18n.commitencoding")) {
- strncpy(git_commit_encoding, value, sizeof(git_commit_encoding));
+ safe_strncpy(git_commit_encoding, value, sizeof(git_commit_encoding));
return 0;
}
diff --git a/http-fetch.c b/http-fetch.c
index d3602b7d7d..da1a7f5416 100644
--- a/http-fetch.c
+++ b/http-fetch.c
@@ -584,10 +584,8 @@ static void process_alternates_response(void *callback_data)
// skip 'objects' at end
if (okay) {
target = xmalloc(serverlen + posn - i - 6);
- strncpy(target, base, serverlen);
- strncpy(target + serverlen, data + i,
- posn - i - 7);
- target[serverlen + posn - i - 7] = '\0';
+ safe_strncpy(target, base, serverlen);
+ safe_strncpy(target + serverlen, data + i, posn - i - 6);
if (get_verbosely)
fprintf(stderr,
"Also look at %s\n", target);
@@ -728,8 +726,8 @@ xml_cdata(void *userData, const XML_Char *s, int len)
struct xml_ctx *ctx = (struct xml_ctx *)userData;
if (ctx->cdata)
free(ctx->cdata);
- ctx->cdata = xcalloc(len+1, 1);
- strncpy(ctx->cdata, s, len);
+ ctx->cdata = xmalloc(len + 1);
+ safe_strncpy(ctx->cdata, s, len + 1);
}
static int remote_ls(struct alt_base *repo, const char *path, int flags,
diff --git a/http-push.c b/http-push.c
index b39b36b767..2d9441ec60 100644
--- a/http-push.c
+++ b/http-push.c
@@ -1269,8 +1269,8 @@ xml_cdata(void *userData, const XML_Char *s, int len)
struct xml_ctx *ctx = (struct xml_ctx *)userData;
if (ctx->cdata)
free(ctx->cdata);
- ctx->cdata = xcalloc(len+1, 1);
- strncpy(ctx->cdata, s, len);
+ ctx->cdata = xmalloc(len + 1);
+ safe_strncpy(ctx->cdata, s, len + 1);
}
static struct remote_lock *lock_remote(char *path, long timeout)
@@ -1472,7 +1472,7 @@ static void process_ls_object(struct remote_ls_ctx *ls)
return;
path += 8;
obj_hex = xmalloc(strlen(path));
- strncpy(obj_hex, path, 2);
+ safe_strncpy(obj_hex, path, 3);
strcpy(obj_hex + 2, path + 3);
one_remote_object(obj_hex);
free(obj_hex);
@@ -2160,8 +2160,8 @@ static void fetch_symref(char *path, char **symref, unsigned char *sha1)
/* If it's a symref, set the refname; otherwise try for a sha1 */
if (!strncmp((char *)buffer.buffer, "ref: ", 5)) {
- *symref = xcalloc(buffer.posn - 5, 1);
- strncpy(*symref, (char *)buffer.buffer + 5, buffer.posn - 6);
+ *symref = xmalloc(buffer.posn - 5);
+ safe_strncpy(*symref, (char *)buffer.buffer + 5, buffer.posn - 5);
} else {
get_sha1_hex(buffer.buffer, sha1);
}
diff --git a/ident.c b/ident.c
index 7c81fe8d8b..7b44cbd2cc 100644
--- a/ident.c
+++ b/ident.c
@@ -71,10 +71,9 @@ int setup_ident(void)
len = strlen(git_default_email);
git_default_email[len++] = '.';
if (he && (domainname = strchr(he->h_name, '.')))
- strncpy(git_default_email + len, domainname + 1, sizeof(git_default_email) - len);
+ safe_strncpy(git_default_email + len, domainname + 1, sizeof(git_default_email) - len);
else
- strncpy(git_default_email + len, "(none)", sizeof(git_default_email) - len);
- git_default_email[sizeof(git_default_email) - 1] = 0;
+ safe_strncpy(git_default_email + len, "(none)", sizeof(git_default_email) - len);
}
/* And set the default date */
datestamp(git_default_date, sizeof(git_default_date));
diff --git a/path.c b/path.c
index 5168b5f17d..194e0b553f 100644
--- a/path.c
+++ b/path.c
@@ -83,14 +83,19 @@ int git_mkstemp(char *path, size_t len, const char *template)
}
-char *safe_strncpy(char *dest, const char *src, size_t n)
+size_t safe_strncpy(char *dest, const char *src, size_t size)
{
- strncpy(dest, src, n);
- dest[n - 1] = '\0';
+ size_t ret = strlen(src);
- return dest;
+ if (size) {
+ size_t len = (ret >= size) ? size - 1 : ret;
+ memcpy(dest, src, len);
+ dest[len] = '\0';
+ }
+ return ret;
}
+
int validate_symref(const char *path)
{
struct stat st;
diff --git a/sha1_name.c b/sha1_name.c
index fbbde1cf7d..8fe9b7a75f 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -262,8 +262,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
if (str[am] == '@' && str[am+1] == '{' && str[len-1] == '}') {
int date_len = len - am - 3;
char *date_spec = xmalloc(date_len + 1);
- strncpy(date_spec, str + am + 2, date_len);
- date_spec[date_len] = 0;
+ safe_strncpy(date_spec, str + am + 2, date_len + 1);
at_time = approxidate(date_spec);
free(date_spec);
len = am;
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