bcdec1a8b
Samuel Mendoza-Jonas
2018-05-14
Subject
udhcpc6: add DHCPv6 env helper
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networking/udhcp/d6_dhcpc.c+28 -0
| @@ -195,6 +195,34 @@ static char** new_env(void) | |
| return &client6_data.env_ptr[client6_data.env_idx++]; | |
| } | |
| + | static char *string_option_to_env(uint8_t *option, uint8_t *option_end) |
| + | { |
| + | const char *ptr, *name = NULL; |
| + | unsigned val_len; |
| + | int i; |
| + | |
| + | ptr = d6_option_strings; |
| + | i = 0; |
| + | while (*ptr) { |
| + | if (d6_optflags[i].code == option[1]) { |
| + | name = ptr; |
| + | goto found; |
| + | } |
| + | ptr += strlen(ptr) + 1; |
| + | i++; |
| + | } |
| + | bb_error_msg("can't find option name for 0x%x, skipping", option[1]); |
| + | return NULL; |
| + | |
| + | found: |
| + | val_len = (option[2] << 8) | option[3]; |
| + | if (val_len + &option[D6_OPT_DATA] > option_end) { |
| + | bb_error_msg("option data exceeds option length"); |
| + | return NULL; |
| + | } |
| + | return xasprintf("%s=%.*s", name, val_len, (char*)option + 4); |
| + | } |
| + | |
| /* put all the parameters into the environment */ | |
| static void option_to_env(uint8_t *option, uint8_t *option_end) | |
| { | |