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https://github.com/genodelabs/genode.git
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045a30865a
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8d521036fb
@ -241,62 +241,58 @@ namespace Genode {
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Genode::size_t Genode::ascii_to(char const *s, Net::Ipv4_address &result)
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{
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using namespace Net;
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Net::Ipv4_address buf;
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size_t number_idx = 0;
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size_t read_len = 0;
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while (1) {
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struct Scanner_policy_number
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{
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static bool identifier_char(char c, unsigned i ) {
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return Genode::is_digit(c) && c !='.'; }
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};
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/* read the current number, fail if there's no number */
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size_t number_len = ascii_to_unsigned(s, buf.addr[number_idx], 10);
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if (!number_len) {
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return 0; }
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typedef ::Genode::Token<Scanner_policy_number> Token;
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/* update read length and number index */
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read_len += number_len;
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number_idx++;
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Ipv4_address ip_addr;
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Token t(s);
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char tmpstr[4];
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int cnt = 0;
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unsigned char ipb[4] = {0};
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size_t size = 0;
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while(t) {
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if (t.type() == Token::WHITESPACE || t[0] == '.') {
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t = t.next();
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size++;
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continue;
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/* if we have all numbers, fill result and return read length */
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if (number_idx == sizeof(buf.addr) / sizeof(buf.addr[0])) {
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result = buf;
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return read_len;
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}
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t.string(tmpstr, sizeof(tmpstr));
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unsigned long tmpc = 0;
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size += Genode::ascii_to(tmpstr, tmpc);
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ipb[cnt] = tmpc & 0xFF;
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t = t.next();
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if (cnt == 4)
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break;
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cnt++;
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/* as it was not the last number, check for the following dot */
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s += number_len;
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if (*s != '.') {
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return 0; }
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read_len++;
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s++;
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}
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if (cnt == 4) {
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result.addr[0] = ipb[0];
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result.addr[1] = ipb[1];
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result.addr[2] = ipb[2];
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result.addr[3] = ipb[3];
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return size;
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}
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return 0;
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}
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Genode::size_t Genode::ascii_to(char const *s, Net::Ipv4_address_prefix &result)
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{
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size_t size = ascii_to(s, result.address);
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if (!size || s[size] != '/') { return 0; }
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char const * prefix = &s[size + 1];
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size_t const prefix_size = ascii_to_unsigned(prefix, result.prefix, 10);
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if (!prefix_size) { return 0; }
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size += prefix_size + 1;
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return size;
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/* read the leading IPv4 address, fail if there's no address */
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Net::Ipv4_address_prefix buf;
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size_t read_len = ascii_to(s, buf.address);
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if (!read_len) {
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return 0; }
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/* check for the following slash */
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s += read_len;
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if (*s != '/') {
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return 0; }
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read_len++;
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s++;
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/* read the prefix, fail if there's no prefix */
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size_t prefix_len = ascii_to_unsigned(s, buf.prefix, 10);
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if (!prefix_len) {
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return 0; }
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/* fill result and return read length */
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result = buf;
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return read_len + prefix_len;
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}
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#endif /* _IPV4_H_ */
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