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- Correct MAXPATHLEN/MAXHOSTNAMELEN usage

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- Check return values of malloc() and strdup()
- Replace strcpy()/strcat()/sprintf() usage with strlcpy()/snprintf

Reviewed by:	-audit
This commit is contained in:
Chris D. Faulhaber 2001-01-20 17:36:08 +00:00
parent 8b6f5e6568
commit 3c0cec43e7
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=71299
1 changed files with 39 additions and 36 deletions
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75
usr.sbin/newsyslog/newsyslog.c
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@ -92,7 +92,7 @@ time_t timenow;
#define MIN_PID 5
#define MAX_PID 99999 /* was lower, see /usr/include/sys/proc.h */
char hostname[MAXHOSTNAMELEN + 1]; /* hostname */
char hostname[MAXHOSTNAMELEN]; /* hostname */
char *daytime; /* timenow in human readable form */
static struct conf_entry *parse_file(char **files);
@ -290,13 +290,16 @@ parse_file(char **files)
}
if (!first) {
working = (struct conf_entry *) malloc(sizeof(struct conf_entry));
if ((working = (struct conf_entry *) malloc(sizeof(struct conf_entry))) == NULL)
err(1, "malloc");
first = working;
} else {
working->next = (struct conf_entry *) malloc(sizeof(struct conf_entry));
if ((working->next = (struct conf_entry *) malloc(sizeof(struct conf_entry))) == NULL)
err(1, "malloc");
working = working->next;
}
working->log = strdup(q);
if ((working->log = strdup(q)) == NULL)
err(1, "strdup");
q = parse = missing_field(sob(++parse), errline);
parse = son(parse);
@ -474,9 +477,9 @@ static void
dotrim(char *log, char *pid_file, int numdays, int flags, int perm,
int owner_uid, int group_gid, int sig)
{
char dirpart[MAXPATHLEN + 1], namepart[MAXPATHLEN + 1];
char file1[MAXPATHLEN + 1], file2[MAXPATHLEN + 1];
char zfile1[MAXPATHLEN + 1], zfile2[MAXPATHLEN + 1];
char dirpart[MAXPATHLEN], namepart[MAXPATHLEN];
char file1[MAXPATHLEN], file2[MAXPATHLEN];
char zfile1[MAXPATHLEN], zfile2[MAXPATHLEN];
int notified, need_notification, fd, _numdays;
struct stat st;
pid_t pid;
@ -496,15 +499,15 @@ dotrim(char *log, char *pid_file, int numdays, int flags, int perm,
/* build complete name of archive directory into dirpart */
if (*archdirname == '/') { /* absolute */
strcpy(dirpart, archdirname);
strlcpy(dirpart, archdirname, sizeof(dirpart));
} else { /* relative */
/* get directory part of logfile */
strcpy(dirpart, log);
strlcpy(dirpart, log, sizeof(dirpart));
if ((p = rindex(dirpart, '/')) == NULL)
dirpart[0] = '\0';
else
*(p + 1) = '\0';
strcat(dirpart, archdirname);
strlcat(dirpart, archdirname, sizeof(dirpart));
}
/* check if archive directory exists, if not, create it */
@ -513,19 +516,19 @@ dotrim(char *log, char *pid_file, int numdays, int flags, int perm,
/* get filename part of logfile */
if ((p = rindex(log, '/')) == NULL)
strcpy(namepart, log);
strlcpy(namepart, log, sizeof(namepart));
else
strcpy(namepart, p + 1);
strlcpy(namepart, p + 1, sizeof(namepart));
/* name of oldest log */
(void) sprintf(file1, "%s/%s.%d", dirpart, namepart, numdays);
(void) strcpy(zfile1, file1);
(void) strcat(zfile1, COMPRESS_POSTFIX);
(void) snprintf(file1, sizeof(file1), "%s/%s.%d", dirpart, namepart, numdays);
(void) snprintf(zfile1, sizeof(zfile1), "%s%s", file1,
COMPRESS_POSTFIX);
} else {
/* name of oldest log */
(void) sprintf(file1, "%s.%d", log, numdays);
(void) strcpy(zfile1, file1);
(void) strcat(zfile1, COMPRESS_POSTFIX);
(void) snprintf(file1, sizeof(file1), "%s.%d", log, numdays);
(void) snprintf(zfile1, sizeof(zfile1), "%s%s", file1,
COMPRESS_POSTFIX);
}
if (noaction) {
@ -540,18 +543,18 @@ dotrim(char *log, char *pid_file, int numdays, int flags, int perm,
_numdays = numdays; /* preserve */
while (numdays--) {
(void) strcpy(file2, file1);
(void) strlcpy(file2, file1, sizeof(file2));
if (archtodir)
(void) sprintf(file1, "%s/%s.%d", dirpart, namepart, numdays);
(void) snprintf(file1, sizeof(file1), "%s/%s.%d", dirpart, namepart, numdays);
else
(void) sprintf(file1, "%s.%d", log, numdays);
(void) snprintf(file1, sizeof(file1), "%s.%d", log, numdays);
(void) strcpy(zfile1, file1);
(void) strcpy(zfile2, file2);
(void) strlcpy(zfile1, file1, sizeof(zfile1));
(void) strlcpy(zfile2, file2, sizeof(zfile2));
if (lstat(file1, &st)) {
(void) strcat(zfile1, COMPRESS_POSTFIX);
(void) strcat(zfile2, COMPRESS_POSTFIX);
(void) strlcat(zfile1, COMPRESS_POSTFIX, sizeof(zfile1));
(void) strlcat(zfile2, COMPRESS_POSTFIX, sizeof(zfile2));
if (lstat(zfile1, &st))
continue;
}
@ -633,7 +636,7 @@ dotrim(char *log, char *pid_file, int numdays, int flags, int perm,
sleep(10);
}
if (archtodir) {
(void) sprintf(file1, "%s/%s", dirpart, namepart);
(void) snprintf(file1, sizeof(file1), "%s/%s", dirpart, namepart);
compress_log(file1);
} else {
compress_log(log);
@ -662,9 +665,9 @@ static void
compress_log(char *log)
{
pid_t pid;
char tmp[MAXPATHLEN + 1];
char tmp[MAXPATHLEN];
(void) sprintf(tmp, "%s.0", log);
(void) snprintf(tmp, sizeof(tmp), "%s.0", log);
pid = fork();
if (pid < 0)
err(1, "fork");
@ -697,26 +700,26 @@ age_old_log(char *file)
/* build name of archive directory into tmp */
if (*archdirname == '/') { /* absolute */
strcpy(tmp, archdirname);
strlcpy(tmp, archdirname, sizeof(tmp));
} else { /* relative */
/* get directory part of logfile */
strcpy(tmp, file);
strlcpy(tmp, file, sizeof(tmp));
if ((p = rindex(tmp, '/')) == NULL)
tmp[0] = '\0';
else
*(p + 1) = '\0';
strcat(tmp, archdirname);
strlcat(tmp, archdirname, sizeof(tmp));
}
strcat(tmp, "/");
strlcat(tmp, "/", sizeof(tmp));
/* get filename part of logfile */
if ((p = rindex(file, '/')) == NULL)
strcat(tmp, file);
strlcat(tmp, file, sizeof(tmp));
else
strcat(tmp, p + 1);
strlcat(tmp, p + 1, sizeof(tmp));
} else {
(void) strcpy(tmp, file);
(void) strlcpy(tmp, file, sizeof(tmp));
}
if (stat(strcat(tmp, ".0"), &sb) < 0)
@ -886,7 +889,7 @@ static void
createdir(char *dirpart)
{
char *s, *d;
char mkdirpath[MAXPATHLEN + 1];
char mkdirpath[MAXPATHLEN];
struct stat st;
s = dirpart;