/*
* Parse the next flag (and value if specified), return 0 if done, -1 on
* error, otherwise the flag's retval.
*/
int opt_next(void)
{
char *p;
const OPTIONS *o;
int ival;
long lval;
unsigned long ulval;
ossl_intmax_t imval;
ossl_uintmax_t umval;
/* Look at current arg; at end of the list? */
arg = NULL;
p = argv[opt_index];
if (p == NULL)
return 0;
/* If word doesn't start with a -, we're done. */
if (*p != '-')
return 0;
/* Hit "--" ? We're done. */
opt_index++;
if (strcmp(p, "--") == 0)
return 0;
/* Allow -nnn and --nnn */
if (*++p == '-')
p++;
flag = p - 1;
/* If we have --flag=foo, snip it off */
if ((arg = strchr(p, '=')) != NULL)
*arg++ = '\0';
for (o = opts; o->name; ++o) {
/* If not this option, move on to the next one. */
if (strcmp(p, o->name) != 0)
continue;
/* If it doesn't take a value, make sure none was given. */
if (o->valtype == 0 || o->valtype == '-') {
if (arg) {
BIO_printf(bio_err,
"%s: Option -%s does not take a value\n", prog, p);
return -1;
}
return o->retval;
}
/* Want a value; get the next param if =foo not used. */
if (arg == NULL) {
if (argv[opt_index] == NULL) {
BIO_printf(bio_err,
"%s: Option -%s needs a value\n", prog, o->name);
return -1;
}
arg = argv[opt_index++];
}
/* Syntax-check value. */
switch (o->valtype) {
default:
case 's':
/* Just a string. */
break;
case '/':
if (app_isdir(arg) >= 0)
break;
BIO_printf(bio_err, "%s: Not a directory: %s\n", prog, arg);
return -1;
case '<':
/* Input file. */
if (strcmp(arg, "-") == 0 || app_access(arg, R_OK) >= 0)
break;
BIO_printf(bio_err,
"%s: Cannot open input file %s, %s\n",
prog, arg, strerror(errno));
return -1;
case '>':
/* Output file. */
if (strcmp(arg, "-") == 0 || app_access(arg, W_OK) >= 0 || errno == ENOENT)
break;
BIO_printf(bio_err,
"%s: Cannot open output file %s, %s\n",
prog, arg, strerror(errno));
return -1;
case 'p':
case 'n':
if (!opt_int(arg, &ival)
|| (o->valtype == 'p' && ival <= 0)) {
BIO_printf(bio_err,
"%s: Non-positive number \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
}
break;
case 'M':
if (!opt_imax(arg, &imval)) {
BIO_printf(bio_err,
"%s: Invalid number \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
}
break;
case 'U':
if (!opt_umax(arg, &umval)) {
BIO_printf(bio_err,
"%s: Invalid number \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
}
break;
case 'l':
if (!opt_long(arg, &lval)) {
BIO_printf(bio_err,
"%s: Invalid number \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
}
break;
case 'u':
if (!opt_ulong(arg, &ulval)) {
BIO_printf(bio_err,
"%s: Invalid number \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
}
break;
case 'E':
case 'F':
case 'f':
if (opt_format(arg,
o->valtype == 'E' ? OPT_FMT_PDE :
o->valtype == 'F' ? OPT_FMT_PEMDER
: OPT_FMT_ANY, &ival))
break;
BIO_printf(bio_err,
"%s: Invalid format \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
}
/* Return the flag value. */
return o->retval;
}
if (unknown != NULL) {
dunno = p;
return unknown->retval;
}
BIO_printf(bio_err, "%s: Option unknown option -%s\n", prog, p);
return -1;
}
/*
* Parse the next flag (and value if specified), return 0 if done, -1 on
* error, otherwise the flag's retval.
*/
int opt_next(void)
{
char *p;
char *endptr;
const OPTIONS *o;
int dummy;
int base;
long val;
/* Look at current arg; at end of the list? */
arg = NULL;
p = argv[opt_index];
if (p == NULL)
return 0;
/* If word doesn't start with a -, we're done. */
if (*p != '-')
return 0;
/* Hit "--" ? We're done. */
opt_index++;
if (strcmp(p, "--") == 0)
return 0;
/* Allow -nnn and --nnn */
if (*++p == '-')
p++;
flag = p - 1;
/* If we have --flag=foo, snip it off */
if ((arg = strchr(p, '=')) != NULL)
*arg++ = '\0';
for (o = opts; o->name; ++o) {
/* If not this option, move on to the next one. */
if (strcmp(p, o->name) != 0)
continue;
/* If it doesn't take a value, make sure none was given. */
if (o->valtype == 0 || o->valtype == '-') {
if (arg) {
BIO_printf(bio_err,
"%s: Option -%s does not take a value\n", prog, p);
return -1;
}
return o->retval;
}
/* Want a value; get the next param if =foo not used. */
if (arg == NULL) {
if (argv[opt_index] == NULL) {
BIO_printf(bio_err,
"%s: Option -%s needs a value\n", prog, o->name);
return -1;
}
arg = argv[opt_index++];
}
/* Syntax-check value. */
/*
* Do some basic syntax-checking on the value. These tests aren't
* perfect (ignore range overflow) but they catch common failures.
*/
switch (o->valtype) {
default:
case 's':
/* Just a string. */
break;
case '/':
if (app_isdir(arg) >= 0)
break;
BIO_printf(bio_err, "%s: Not a directory: %s\n", prog, arg);
return -1;
case '<':
/* Input file. */
if (strcmp(arg, "-") == 0 || app_access(arg, R_OK) >= 0)
break;
BIO_printf(bio_err,
"%s: Cannot open input file %s, %s\n",
prog, arg, strerror(errno));
return -1;
case '>':
/* Output file. */
if (strcmp(arg, "-") == 0 || app_access(arg, W_OK) >= 0 || errno == ENOENT)
break;
BIO_printf(bio_err,
"%s: Cannot open output file %s, %s\n",
prog, arg, strerror(errno));
return -1;
case 'p':
case 'n':
base = scanforhex(arg);
val = strtol(arg, &endptr, base);
if (*endptr == '\0') {
if (o->valtype == 'p' && val <= 0) {
BIO_printf(bio_err,
"%s: Non-positive number \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
}
break;
}
BIO_printf(bio_err,
"%s: Invalid number \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
case 'u':
base = scanforhex(arg);
strtoul(arg, &endptr, base);
if (*endptr == '\0')
break;
BIO_printf(bio_err,
"%s: Invalid number \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
case 'f':
case 'F':
if (opt_format(arg,
o->valtype == 'F' ? OPT_FMT_PEMDER
: OPT_FMT_ANY, &dummy))
break;
BIO_printf(bio_err,
"%s: Invalid format \"%s\" for -%s\n",
prog, arg, o->name);
return -1;
}
/* Return the flag value. */
return o->retval;
}
if (unknown != NULL) {
dunno = p;
return unknown->retval;
}
BIO_printf(bio_err, "%s: Option unknown option -%s\n", prog, p);
return -1;
}
