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fix a segfault on truncated log lines

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svn:r473
This commit is contained in:
Roger Dingledine 2003-09-19 09:30:34 +00:00
parent 078c5ab617
commit e514ac528c
1 changed files with 12 additions and 4 deletions
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16
src/common/log.c
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@ -49,14 +49,22 @@ static INLINE void format_msg(char *buf, size_t buf_len,
my_gettimeofday(&now);
t = (time_t)now.tv_sec;
n = strftime(buf, buf_len, "%b %d %H:%M:%S", localtime(&t));
n = strftime(buf, buf_len, "%b %d %H:%M:%S", localtime(&t));
n += snprintf(buf+n, buf_len-n,
".%.3ld [%s] ",
(long)now.tv_usec / 1000, sev_to_string(severity));
if (funcname)
".%.3ld [%s] ",
(long)now.tv_usec / 1000, sev_to_string(severity));
if(n > buf_len)
n = buf_len; /* the *nprintf funcs return how many bytes they
* _would_ print, if the output is truncated */
if (funcname) {
n += snprintf(buf+n, buf_len-n, "%s(): ", funcname);
if(n > buf_len)
n = buf_len;
}
n += vsnprintf(buf+n,buf_len-n,format,ap);
if(n > buf_len)
n = buf_len;
buf[n]='\n';
buf[n+1]='\0';
}