/* add an option string to the options (an option string contains an option code, * length, then data) */ int add_option_string(uint8_t *optionptr, uint8_t *string) { int end = end_option(optionptr); /* end position + string length + option code/length + end option */ if (end + string[OPT_LEN] + 2 + 1 >= 308) { LOG(LOG_ERR, "Option 0x%02x did not fit into the packet!", string[OPT_CODE]); return 0; } DEBUG(LOG_INFO, "adding option 0x%02x", string[OPT_CODE]); memcpy(optionptr + end, string, string[OPT_LEN] + 2); optionptr[end + string[OPT_LEN] + 2] = DHCP_END; return string[OPT_LEN] + 2; }
/* option bytes: [code][len][data1][data2]..[dataLEN] */ int FAST_FUNC add_option_string(uint8_t *optionptr, uint8_t *string) { int end = end_option(optionptr); /* end position + string length + option code/length + end option */ if (end + string[OPT_LEN] + 2 + 1 >= DHCP_OPTIONS_BUFSIZE) { bb_error_msg("option 0x%02x did not fit into the packet", string[OPT_CODE]); return 0; } log_option("Adding option", string); memcpy(optionptr + end, string, string[OPT_LEN] + 2); optionptr[end + string[OPT_LEN] + 2] = DHCP_END; return string[OPT_LEN] + 2; }