Monorepo for Aesthetic.Computer
aesthetic.computer
feat: captive portal auto-detect + DNS fallback + clean udhcpc script
- After WiFi connects, curl connectivity check (gstatic 204)
- Auto-follow redirects to clear simple captive portals
- DNS: always add 8.8.8.8 + 1.1.1.1 as fallback in udhcpc script
- Log portal status for debugging
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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fedac/native/docker-build.sh
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fedac/native/docker-build.sh
···
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ip addr flush dev "$interface"
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ip addr add "$ip/${mask:-24}" dev "$interface"
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[ -n "$router" ] && ip route add default via "$router" dev "$interface"
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-
[ -n "$dns" ] && {
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: > /etc/resolv.conf
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for d in $dns; do echo "nameserver $d" >> /etc/resolv.conf; done
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}
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# DNS: use DHCP-provided + fallback to Google/Cloudflare
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{
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for d in $dns; do echo "nameserver $d"; done
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echo "nameserver 8.8.8.8"
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echo "nameserver 1.1.1.1"
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} > /etc/resolv.conf
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;;
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deconfig)
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ip addr flush dev "$interface"
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fedac/native/src/wifi.c
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fedac/native/src/wifi.c
···
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pthread_mutex_unlock(&wifi->lock);
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wifi_log(wifi, "Connected! IP: %s", ip);
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// Captive portal detection + auto-accept
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{
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char portal_cmd[256];
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snprintf(portal_cmd, sizeof(portal_cmd),
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"curl -sL -o /dev/null -w '%%{http_code}' "
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"--max-time 5 --connect-timeout 3 "
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"http://connectivitycheck.gstatic.com/generate_204 "
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"2>/dev/null");
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FILE *pf = popen(portal_cmd, "r");
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if (pf) {
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char code[8] = "";
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if (fgets(code, sizeof(code), pf))
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code[strcspn(code, "\n")] = 0;
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pclose(pf);
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if (strcmp(code, "204") == 0) {
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wifi_log(wifi, "Internet: OK (no captive portal)");
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} else if (code[0]) {
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wifi_log(wifi, "Captive portal detected (HTTP %s), trying auto-accept...", code);
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// Follow redirect and accept — many portals just need a GET
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snprintf(portal_cmd, sizeof(portal_cmd),
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"curl -sL --max-time 10 --connect-timeout 5 "
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"-o /dev/null -w '%%{http_code}' "
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"http://connectivitycheck.gstatic.com/generate_204 "
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"2>/dev/null");
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FILE *af = popen(portal_cmd, "r");
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if (af) {
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char acode[8] = "";
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if (fgets(acode, sizeof(acode), af))
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acode[strcspn(acode, "\n")] = 0;
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pclose(af);
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if (strcmp(acode, "204") == 0)
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wifi_log(wifi, "Captive portal cleared!");
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else
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wifi_log(wifi, "Captive portal may need manual login (HTTP %s)", acode);
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}
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} else {
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wifi_log(wifi, "Connectivity check failed (no response)");
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}
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}
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}
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// Save credentials for auto-reconnect
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strncpy(wifi->last_ssid, ssid, WIFI_SSID_MAX - 1);
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strncpy(wifi->last_pass, password ? password : "", WIFI_PASS_MAX - 1);