diff options
Diffstat (limited to 'bsd/freebsd/contrib/ntp/libntp/octtoint.c')
-rw-r--r-- | bsd/freebsd/contrib/ntp/libntp/octtoint.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/bsd/freebsd/contrib/ntp/libntp/octtoint.c b/bsd/freebsd/contrib/ntp/libntp/octtoint.c new file mode 100644 index 0000000..e519601 --- /dev/null +++ b/bsd/freebsd/contrib/ntp/libntp/octtoint.c @@ -0,0 +1,36 @@ +/* + * octtoint - convert an ascii string in octal to an unsigned + * long, with error checking + */ +#include <config.h> +#include <stdio.h> +#include <ctype.h> + +#include "ntp_stdlib.h" + +int +octtoint( + const char *str, + u_long *ival + ) +{ + register u_long u; + register const char *cp; + + cp = str; + + if (*cp == '\0') + return 0; + + u = 0; + while (*cp != '\0') { + if (!isdigit((unsigned char)*cp) || *cp == '8' || *cp == '9') + return 0; + if (u >= 0x20000000) + return 0; /* overflow */ + u <<= 3; + u += *cp++ - '0'; /* ascii dependent */ + } + *ival = u; + return 1; +} |