commit 1d1371943d2a6927d937a90bb53bcd3d2bab82fa
Author: nervuri <seva@nervuri.net>
Date:   Wed Apr 28 09:20:18 2021 +0000

    init

diff --git a/LICENSE.txt b/LICENSE.txt
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index 0000000..670154e
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,116 @@
+CC0 1.0 Universal
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diff --git a/README.md b/README.md
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+++ b/README.md
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+# Gemini Trust Store Generators
+
+Geminispace is (currently) small enough that we can afford to download all known capsules' TLS certificates and use them to generate trust stores for various Gemini clients.  If verified via multiple network perspectives, using a pre-generated trust store is a major improvement over blindly trusting-on-first-use.
+
+This repo contains scripts for:
+
+1. downloading a list of hosts from gemini://geminispace.info/known-hosts
+2. downloading the TLS certificates of those hosts
+3. generating a table containing details about each certificate
+4. generating trust stores for various Gemini clients, currently:
+
+* [Agunua](agunua/)
+* [Amfora](amfora/)
+* [Lagrange](lagrange/)
+
+Trust stores generated by these scripts can be found at https://tildegit.org/nervuri/trust-stores
+
+## Dependencies
+
+Required: [OpenSSL](https://www.openssl.org/), [idn](https://www.gnu.org/software/libidn/)
+
+Optional: [torsocks](https://packages.debian.org/buster/torsocks) (for .onion capsules and for double-checking certificates using a different network perspective)
+
+To install them in Debian, run: `sudo apt install openssl idn torsocks`
+
+## Usage
+
+`./main.sh` will run all scripts.  For the [trust stores repo](https://tildegit.org/nervuri/trust-stores), I use `time ./main.sh >log-stdout 2>log-stderr`.  For 893 hosts, the command takes around 80 minutes to complete with Tor verification and 45 minutes without.
+
+`get-certs.sh` accepts `tor` as an optional argument, to double-check certificates using the Tor network.  If you have `torsocks` installed, this option will automatically be used when you run `./main.sh`.
+
+All trust store generators accept certificate expiry boundaries as arguments.  Ex:
+
+```
+./generate.sh          # all certs
+./generate.sh 90+      # certs that will expire in more than 90 days from now
+./generate.sh 30-      # certs that have expired more than 30 days ago
+./generate.sh 30- 90+  # both of the above; in other words, certs are excluded if:
+                       # {30 days ago} < cert_expiry < {90 days from now}
+```
+
+This is to assist client developers who wish to bundle pre-generated trust stores with their clients, but only want to include long-lived (and long-expired) certificates.
+
+## How to contribute
+
+The project is hosted [at tildegit.org](https://tildegit.org/nervuri/trust-store-generators).  If you don't want to make an account, just [shoot me an email](https://nervuri.net/contact) with your [patch](https://git-send-email.io/)/suggestion/bug report/whatever else.
diff --git a/agunua/INSTRUCTIONS.md b/agunua/INSTRUCTIONS.md
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+++ b/agunua/INSTRUCTIONS.md
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+# Instructions for Agunua
+
+Agunua's trust store is `~/.agunua/fingerprints/` on GNU/Linux systems.  For each host, a file is created in that directory.
+
+You can replace the `fingerprints` directory with the generated one, or merge them by running:
+
+```
+cp fingerprints/* ~/.agunua/fingerprints/
+```
diff --git a/agunua/generate-trust-store.sh b/agunua/generate-trust-store.sh
new file mode 100755
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+++ b/agunua/generate-trust-store.sh
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+#!/bin/sh
+
+### Agunua ###
+# https://framagit.org/bortzmeyer/agunua
+#
+## Trust store format ##
+#   For each host, a file is created: `~/.agunua/fingerprints/${host_file}`,
+# where the name of ${host_file} is identical to the requested host[:port],
+# except for IDNs, which are converted to punycode.
+#   The file contains 3 lines:
+# 1. spki:sha256:base64  -> certificate public key (SPKI) fingerprint
+# 2. expiry date
+# 3. start date
+#
+## Example ##
+# $ cat ~/.agunua/fingerprints/gemini.circumlunar.space
+# GgOhVhkgDbRJZJTskDgcH+i9ngFCJg9tij2WLtPPxy8=
+# 2025-10-03T13:50:37Z
+# 2020-10-03T13:50:37Z
+
+set -o errexit  # (-e) exit immediately if any command has a non-zero exit status
+set -o nounset  # (-u) don't accept undefined variables
+#set -o xtrace  # for debugging
+
+# Go where this script is.
+cd "$(dirname "$0")" || exit
+
+trust_store=fingerprints  # directory
+
+# Remove old fingerprints directory, if present.
+rm -Rf $trust_store
+# Create fingerprints directory.
+mkdir -p $trust_store
+
+# Add the "cert_is_not_within_expiry_boundaries" function.
+. ../expiry-boundaries.sh
+
+for cert_file in ../certs/*; do
+
+  cert=$(cat "$cert_file")
+
+  if cert_is_not_within_expiry_boundaries; then
+    >&2 echo "excluded: $cert_file"
+    continue
+  fi
+
+  host=$(expr "$cert_file" : '^../certs\/\(.*\)\:[0-9]*\.pem$')
+  port=$(expr "$cert_file" : '^../certs\/.*\:\([0-9]*\)\.pem$')
+
+  # Hostname to punycode.
+  host=$(echo "$host" | idn)
+
+  # File for certificate/public key pinning
+  if [ "$port" = 1965 ]; then
+    pinning_file="$trust_store/$host"
+  else
+    pinning_file="$trust_store/$host:$port"
+  fi
+
+  # Certificate public key (SPKI) fingerprint
+  echo "$cert" \
+    | openssl x509 -pubkey -noout \
+    | openssl pkey -pubin -outform der \
+    | openssl dgst -sha256 -binary \
+    | openssl enc -base64 -A \
+    > "$pinning_file"
+  echo >> "$pinning_file"  # newline
+
+  # Expiry date
+  enddate=$(echo "$cert" | openssl x509 -enddate -noout | cut -d '=' -f 2)
+  enddate=$(date -d "$enddate" +"%Y-%m-%dT%H:%M:%SZ" --utc)
+  echo "$enddate" >> "$pinning_file"
+
+  # Start date
+  startdate=$(echo "$cert" | openssl x509 -startdate -noout | cut -d '=' -f 2)
+  startdate=$(date -d "$startdate" +"%Y-%m-%dT%H:%M:%SZ" --utc)
+  echo "$startdate" >> "$pinning_file"
+
+done
+
+echo OK
diff --git a/amfora/INSTRUCTIONS.md b/amfora/INSTRUCTIONS.md
new file mode 100644
index 0000000..aca0333
--- /dev/null
+++ b/amfora/INSTRUCTIONS.md
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+# Instructions for Amfora
+
+Amfora's trust store is `~/.cache/amfora/tofu.toml` on GNU/Linux systems.
+
+You can replace it with the generated `tofu.toml`, or merge them using the provided script:
+
+```
+# First a test run:
+./merge-trust-stores.sh ~/.cache/amfora/tofu.toml
+
+# The entries in ~/.cache/amfora/tofu.toml that are not included in the
+# script-generated trust store will appear at the end of the output.
+
+# If it looks ok, then run:
+./merge-trust-stores.sh ~/.cache/amfora/tofu.toml > ~/.cache/amfora/tofu.toml
+```
diff --git a/amfora/generate-trust-store.sh b/amfora/generate-trust-store.sh
new file mode 100755
index 0000000..0c408c2
--- /dev/null
+++ b/amfora/generate-trust-store.sh
@@ -0,0 +1,77 @@
+#!/bin/sh
+
+### Amfora ###
+# https://github.com/makeworld-the-better-one/amfora
+#
+## Trust store format ##
+# The file "~/.cache/amfora/tofu.toml" is used.
+# It contains 2 lines for each host:port:
+# 1. "example/org:port" = "spki:sha256:uppercase"  -> certificate public key (SPKI) fingerprint
+# 2. "example/org/expiry:port" = expiry date
+# Dots in the hostname are converted to slashes.
+# IDNs are converted to punycode.
+#
+## Example ##
+# $ cat ~/.cache/amfora/tofu.toml
+# "gemini/circumlunar/space" = "1A03A15619200DB4496494EC90381C1FE8BD9E0142260F6D8A3D962ED3CFC72F"
+# "gemini/circumlunar/space/expiry" = 2025-10-03T13:50:37Z
+
+set -o errexit  # (-e) exit immediately if any command has a non-zero exit status
+set -o nounset  # (-u) don't accept undefined variables
+#set -o xtrace  # for debugging
+
+# Go where this script is.
+cd "$(dirname "$0")" || exit
+
+trust_store="tofu.toml"
+
+# Remove the old trust store.
+rm -f "$trust_store"
+
+# Add the "cert_is_not_within_expiry_boundaries" function.
+. ../expiry-boundaries.sh
+
+for cert_file in ../certs/*; do
+
+  cert=$(cat "$cert_file")
+
+  if cert_is_not_within_expiry_boundaries; then
+    >&2 echo "excluded: $cert_file"
+    continue
+  fi
+
+  host=$(expr "$cert_file" : '^../certs\/\(.*\)\:[0-9]*\.pem$')
+  port=$(expr "$cert_file" : '^../certs\/.*\:\([0-9]*\)\.pem$')
+
+  # Hostname to punycode.
+  host=$(echo "$host" | idn)
+
+  # Replace dots with slashes.
+  host=$(echo "$host" | tr . /)
+
+  # Append port if not default
+  if [ "$port" = 1965 ]; then
+    port_string=''
+  else
+    port_string=":$port"
+  fi
+
+  # Certificate public key (SPKI) fingerprint
+  fingerprint=$(echo "$cert" \
+    | openssl x509 -pubkey -noout \
+    | openssl pkey -pubin -outform der \
+    | openssl dgst -sha256 \
+    | cut -d ' ' -f 2 \
+    | tr '[:lower:]' '[:upper:]')
+  line1=$(printf "\"%s$port_string\" = \"%s\"" "$host" "$fingerprint")
+
+  # Expiry date
+  enddate=$(echo "$cert" | openssl x509 -enddate -noout | cut -d '=' -f 2)
+  enddate=$(date -d "$enddate" +"%Y-%m-%dT%H:%M:%SZ" --utc)
+  line2=$(printf "\"%s/expiry$port_string\" = %s" "$host" "$enddate")
+
+  printf "%s\n%s\n" "$line1" "$line2" >> "$trust_store"
+
+done
+
+echo OK
diff --git a/amfora/merge-trust-stores.sh b/amfora/merge-trust-stores.sh
new file mode 100755
index 0000000..80e72ee
--- /dev/null
+++ b/amfora/merge-trust-stores.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+set -o errexit  # (-e) exit immediately if any command has a non-zero exit status
+set -o nounset  # (-u) don't accept undefined variables
+#set -o xtrace  # for debugging
+
+if [ -z "${1:-}" ]; then
+  >&2 echo "The path to the user's trust store must be provided."
+  >&2 echo "The default on GNU/Linux is ~/.cache/amfora/tofu.toml"
+  exit 1
+fi
+
+dir="$(dirname "$0")"  # directory where this script is
+
+trust_store=$(cat "$dir/tofu.toml")  # script-generated trust store
+
+# Loop through user's trust store.
+while read -r line; do
+
+  entry=$(echo "$line" | cut -d ' ' -f 1)
+
+  # If this entry is not in the script-generated trust store, add it.
+  if ! echo "$trust_store" | grep -qF "$entry"; then
+    trust_store="$trust_store\n$line"
+  fi
+
+done < "${1:-}"
+
+# Output to stdout.
+echo "$trust_store"
diff --git a/cert-details.sh b/cert-details.sh
new file mode 100755
index 0000000..9ac8298
--- /dev/null
+++ b/cert-details.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+
+# Generate markdown and CSV files containing cert info for each host.
+
+set -o errexit  # (-e) exit immediately if any command has a non-zero exit status
+set -o nounset  # (-u) don't accept undefined variables
+#set -o xtrace  # for debugging
+
+# Go where this script is.
+cd "$(dirname "$0")" || exit
+
+# Table header
+md_table="| Host | Cert | Expiry | Key Algorithm | Key Size (bits) | Signature Algorithm |
+--- | --- | --- | --- | --- | ---\n"
+csv_table="Host,Expiry,Key Algorithm,Key Size (bits),Signature Algorithm\n"
+
+for cert_file in certs/*.pem; do
+
+  host=$(expr "$cert_file" : '^certs\/\(.*\)\:[0-9]*\.pem$')
+  port=$(expr "$cert_file" : '^certs\/.*\:\([0-9]*\)\.pem$')
+  if [ "$port" != 1965 ]; then
+    host="$host:$port"
+  fi
+
+  # Get cert details: expiry, key algo, key size, signature algo.
+  end_date=$(openssl x509 -in "$cert_file" -enddate -noout | cut -d '=' -f 2)
+  end_date=$(date -d "$end_date" +"%Y-%m-%d" --utc)
+
+  cert_details=$(openssl x509 -in "$cert_file" -noout -text)
+
+  key_algo=$(echo "$cert_details" | grep 'Public Key Algorithm:' | cut -d ':' -f 2)
+  if [ "$key_algo" = ' id-ecPublicKey' ]; then
+    key_algo='ECDSA'
+  elif [ "$key_algo" = ' rsaEncryption' ]; then
+    key_algo='RSA'
+  elif [ "$key_algo" = ' ED25519' ]; then
+    key_algo='ED25519'
+  fi
+
+  if [ "$key_algo" = 'ED25519' ]; then
+    key_size='256'
+  else
+    key_size=$(echo "$cert_details" | grep 'Public-Key:' | cut -d ':' -f 2)
+    key_size=$(expr "$key_size" : '^..\([0-9]*\).*$')
+  fi
+
+  sig_algo=$(echo "$cert_details" | grep '        Signature Algorithm:' | cut -d ':' -f 2)
+
+  # Add a table row.
+  md_table="$md_table| [$host](gemini://$host/) | [PEM]($cert_file) | $end_date | $key_algo | $key_size |$sig_algo |\n"
+  csv_table="$csv_table""$host,$end_date,$key_algo,$key_size,$sig_algo\n"
+
+done
+
+# Write to files.
+echo "$md_table" > cert-details.md
+echo "$csv_table" > cert-details.csv
+
+echo OK
diff --git a/expiry-boundaries.sh b/expiry-boundaries.sh
new file mode 100644
index 0000000..3b07440
--- /dev/null
+++ b/expiry-boundaries.sh
@@ -0,0 +1,60 @@
+#!/bin/sh
+
+# This file is included in every trust store generator script.
+#
+# It defines a function which checks if the expiry date of a
+# certificate is within the specified boundaries.
+#
+# Boundaries can be specified like this:
+#
+# ./generate.sh          # all certs
+# ./generate.sh 90+      # certs that will expire in more than 90 days from now
+# ./generate.sh 30-      # certs that have expired more than 30 days ago
+# ./generate.sh 30- 90+  # both of the above; so certs are excluded if:
+#                        # {30 days ago} < cert_expiry < {90 days from now}
+
+
+# Get the provided boundaries, if any.
+minus_timestamp=''
+plus_timestamp=''
+now=$(date +%s)
+for arg in "$@"; do
+  sign=$(expr "$arg" : '^[0-9]*\(-\|+\)$')
+  if [ "$sign" = '-' ]; then
+    minus_days=$(expr "$arg" : '^\([0-9]*\)-$')
+    minus_timestamp=$((now - minus_days * 86400))
+  elif [ "$sign" = '+' ]; then
+    plus_days=$(expr "$arg" : '^\([0-9]*\)+$')
+    plus_timestamp=$((now + plus_days * 86400))
+  else
+    continue
+  fi
+done
+
+
+cert_is_not_within_expiry_boundaries() (
+
+  # If `return 0`, cert will be excluded.
+
+  if [ -z "$minus_timestamp" ] && [ -z "$plus_timestamp" ]; then
+    # No boundaries were specified.
+    return 1  # false
+  fi
+
+  # Get expiration date from certificate.
+  cert_exp=$(echo "$cert" | openssl x509 -enddate -noout | cut -d '=' -f 2)
+  # Convert it to Unix timestamp.
+  cert_exp=$(date -d "$cert_exp" +%s)
+
+  if [ -n "$minus_timestamp" ] && [ "$cert_exp" -lt "$minus_timestamp" ]; then
+    # $cert_exp < $minus_timestamp, so the cert is within boundaries.
+    return 1  # false
+  elif [ -n "$plus_timestamp" ] && [ "$cert_exp" -gt "$plus_timestamp" ]; then
+    # $cert_exp > $plus_timestamp, so the cert is within boundaries.
+    return 1  # false
+  fi
+
+  # Certs are excluded if:
+  # $minus_timestamp < $cert_exp < $plus_timestamp
+  return 0  # true
+)
diff --git a/get-certs.sh b/get-certs.sh
new file mode 100755
index 0000000..5b00847
--- /dev/null
+++ b/get-certs.sh
@@ -0,0 +1,139 @@
+#!/bin/sh
+
+# Download TLS certificates of hosts specified in the `hosts` file.
+
+set -o errexit  # (-e) exit immediately if any command has a non-zero exit status
+set -o nounset  # (-u) don't accept undefined variables
+#set -o xtrace  # for debugging
+
+# Go where this script is.
+cd "$(dirname "$0")" || exit
+
+# Create certs directory, if it does not exist.
+mkdir -p certs
+
+
+# Define function for fetching a certificate.
+fetch_cert() (
+  hp="$1"   # host and port
+  timeout="${2:-}"
+  torsocks="${3:-}"
+
+  # For .onion domains, connect using Tor.
+  if [ -z "${hp##*.onion:*}" ]; then
+    torsocks='torsocks'
+  fi
+
+  # If a Tor connection was requested and torsocks is not installed, return.
+  if [ "$torsocks" != '' ] && ! command -v torsocks >/dev/null; then
+    >&2 echo "torsocks not available ($hp)"
+    return
+  fi
+
+  response=$($timeout $torsocks openssl s_client -connect "$hp" </dev/null 2>/dev/null \
+      | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p')
+
+  # If no response, try again.
+  if [ -z "$response" ]; then
+    sleep 5
+    response=$($timeout $torsocks openssl s_client -connect "$hp" </dev/null 2>/dev/null \
+        | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p')
+
+    # If still no response and Tor was not used, try one last time.
+    if [ -z "$response" ] && [ -z "$torsocks" ]; then
+      sleep 10
+      response=$($timeout openssl s_client -connect "$hp" </dev/null 2>/dev/null \
+          | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p')
+    fi
+  fi
+
+  echo "$response"
+)
+
+
+# Loop through all hosts.
+while read -r host; do
+
+  printf "%s" "$host"
+
+  port='1965'  # default Gemini port
+
+  # Check if host contains square brackets:
+  # [IPv4], [IPv6], [IPv4]:port or [IPv6]:port.
+  if expr "$host" : '^\[.*\]' >/dev/null; then
+    if expr "$host" : '^\[.*\]\:\([0-9]*\)$' >/dev/null; then
+      port=$(expr "$host" : '^\[.*\]\:\([0-9]*\)$')
+    fi
+    host=$(expr "$host" : '^\[\(.*\)\]')
+
+  # No square brackets, just host:port.
+  # If $host contains only a single ":", then it is not an IPv6 address.
+  elif [ "$(echo "$host" | tr -dc ':' | wc -c)" = 1 ]; then
+    port=$(echo "$host" | cut -d ':' -f 2)
+    host=$(echo "$host" | cut -d ':' -f 1)
+  fi
+
+  # Hostname to punycode.
+  host=$(echo "$host" | idn)
+
+  # Hostname to lowercase.
+  host=$(echo "$host" | tr '[:upper:]' '[:lower:]')
+
+  # Generate host_and_port string.
+  if [ -z "${host##*:*}" ]; then
+    # If host is an IPv6 address, add brackets around it.
+    host_and_port="[$host]:$port"
+  else
+    host_and_port="$host:$port"
+  fi
+
+  # Get cert.
+  cert=$(fetch_cert "$host_and_port" 'timeout 5')
+
+  if [ -z "$cert" ]; then
+    >&2 echo "$host_and_port - connection failed"
+  fi
+
+  # If "tor" option is used, then connect again via Tor,
+  # to check if we get the same cert from a different network perspective.
+  if [ "${1:-}" = 'tor' ] && [ -n "${host##*.onion}" ]; then
+
+    # If torsocks is not installed, return.
+    if ! command -v torsocks >/dev/null; then
+      >&2 echo "torsocks not available ($host_and_port)"
+      exit 1
+    fi
+
+    cert_via_tor=$(fetch_cert "$host_and_port" 'timeout 15' 'torsocks')
+
+    if [ -z "$cert_via_tor" ]; then
+      >&2 echo "$host_and_port - Tor connection failed"
+    elif [ -n "$cert" ] && [ "$cert" != "$cert_via_tor" ]; then
+      >&2 echo "$host_and_port - Tor VERIFICATION FAILED (certs don't match)!!!"
+      # In this case, don't save the certificate.
+      continue
+    else
+      # If direct connection failed and Tor connection succeeded,
+      # use the cert received via Tor.
+      cert="$cert_via_tor"
+    fi
+
+  fi
+
+  if [ -n "$cert" ]; then
+    # If we got a cert back, then the host and port were valid,
+    # so they are safe to include in a file name.
+    # Convert from punycode to unicode, if needed.
+    host_and_port=$(echo "$host_and_port" | idn --idna-to-unicode)
+    echo "$cert" > "certs/${host_and_port}.pem"
+    printf ' - OK'
+  else
+    printf ' - failed'
+  fi
+
+  echo  # newline
+  sleep 0.3
+
+done < hosts
+
+echo OK
diff --git a/get-hosts.sh b/get-hosts.sh
new file mode 100755
index 0000000..61ef977
--- /dev/null
+++ b/get-hosts.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+# Download a list of Gemini hosts from gemini://geminispace.info/known-hosts
+
+set -o errexit  # (-e) exit immediately if any command has a non-zero exit status
+set -o nounset  # (-u) don't accept undefined variables
+#set -o xtrace  # for debugging
+
+# Go where this script is.
+cd "$(dirname "$0")" || exit
+
+# If Agunua is installed, use it.
+if command -v agunua >/dev/null; then
+  # Using Agunua is more secure, because it does certificate pinning.
+  hosts=$(agunua --insecure --binary gemini://geminispace.info/known-hosts \
+    | grep "gemini://" | cut -d ' ' -f 3)
+else
+  # If Agunua is not installed, pipe the request into OpenSSL s_client.
+  hosts=$(printf "gemini://geminispace.info/known-hosts\r\n" \
+    | timeout 5 openssl s_client -quiet -connect "geminispace.info:1965" 2>/dev/null \
+    | grep "gemini://" | cut -d ' ' -f 3)
+fi
+
+if [ -z "$hosts" ]; then
+  >&2 echo "hosts file download failed."
+  exit 1
+fi
+
+# Add a few hosts that are missing from geminispace.info
+hosts="$hosts
+illegaldrugs.net
+feeds.drewdevault.com"
+
+# Remove a host which changes its cert every few minutes.
+hosts=$(echo "$hosts" | grep -v 'tofu-tester.random-projects.net:1966')
+
+# Save to file.
+echo "$hosts" | sort | uniq > hosts
+
+echo OK
diff --git a/lagrange/INSTRUCTIONS.md b/lagrange/INSTRUCTIONS.md
new file mode 100644
index 0000000..b9d8bcc
--- /dev/null
+++ b/lagrange/INSTRUCTIONS.md
@@ -0,0 +1,16 @@
+# Instructions for Lagrange
+
+Lagrange's trust store is `~/.config/lagrange/trusted.txt` on GNU/Linux systems.
+
+You can replace it with the generated `trusted.txt`, or merge them using the provided script:
+
+```
+# First a test run:
+./merge-trust-stores.sh ~/.config/lagrange/trusted.txt
+
+# The entries in ~/.config/lagrange/trusted.txt that are not included in the
+# script-generated trust store will appear at the end of the output.
+
+# If it looks ok, then run:
+./merge-trust-stores.sh ~/.config/lagrange/trusted.txt > ~/.config/lagrange/trusted.txt
+```
diff --git a/lagrange/generate-trust-store.sh b/lagrange/generate-trust-store.sh
new file mode 100755
index 0000000..cb0f14f
--- /dev/null
+++ b/lagrange/generate-trust-store.sh
@@ -0,0 +1,60 @@
+#!/bin/sh
+
+### Lagrange ###
+# https://gmi.skyjake.fi/lagrange/
+#
+## Trust store format ##
+# The file "~/.config/lagrange/trusted.txt" is used on GNU/Linux and BSD.
+# For other platforms, see https://github.com/skyjake/lagrange#user-files
+# This file contains one line for each host (ports are not taken into account):
+# example.org expiry_timestamp cert:sha256
+# IDNs are converted to punycode.
+#
+## Example ##
+# $ cat ~/.config/lagrange/trusted.txt
+# gemini.circumlunar.space 1759495837 5b4086d6914231f55828c815faae1f10e28b8bd42af6a1e286a711e9b7d78326
+
+set -o errexit  # (-e) exit immediately if any command has a non-zero exit status
+set -o nounset  # (-u) don't accept undefined variables
+#set -o xtrace  # for debugging
+
+# Go where this script is.
+cd "$(dirname "$0")" || exit
+
+trust_store="trusted.txt"
+
+# Remove the old trust store.
+rm -f "$trust_store"
+
+# Add the "cert_is_not_within_expiry_boundaries" function.
+. ../expiry-boundaries.sh
+
+for cert_file in ../certs/*; do
+
+  cert=$(cat "$cert_file")
+
+  if cert_is_not_within_expiry_boundaries; then
+    >&2 echo "excluded: $cert_file"
+    continue
+  fi
+
+  host=$(expr "$cert_file" : '^../certs\/\(.*\)\:[0-9]*\.pem$')
+
+  # Hostname to punycode.
+  host=$(echo "$host" | idn)
+
+  # Expiry date
+  enddate=$(echo "$cert" | openssl x509 -enddate -noout | cut -d '=' -f 2)
+  enddate=$(date -d "$enddate" +%s --utc)
+
+  # Certificate fingerprint
+  fingerprint=$(echo "$cert" \
+    | openssl x509 -outform der \
+    | sha256sum \
+    | cut -d ' ' -f 1)
+
+  echo "$host $enddate $fingerprint" >> "$trust_store"
+
+done
+
+echo OK
diff --git a/lagrange/merge-trust-stores.sh b/lagrange/merge-trust-stores.sh
new file mode 100755
index 0000000..5f86bc1
--- /dev/null
+++ b/lagrange/merge-trust-stores.sh
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+set -o errexit  # (-e) exit immediately if any command has a non-zero exit status
+set -o nounset  # (-u) don't accept undefined variables
+#set -o xtrace  # for debugging
+
+if [ -z "${1:-}" ]; then
+  >&2 echo "The path to the user's trust store must be provided."
+  >&2 echo "The default on GNU/Linux is ~/.config/lagrange/trusted.txt"
+  exit 1
+fi
+
+dir="$(dirname "$0")"  # directory where this script is
+
+trust_store=$(cat "$dir/trusted.txt")  # script-generated trust store
+
+# Loop through user's trust store.
+while read -r line; do
+
+  entry=$(echo "$line" | cut -d ' ' -f 1)
+
+  # If this entry is not in the script-generated trust store, add it.
+  if ! echo "$trust_store" | grep -qF "$entry"; then
+    trust_store="$trust_store\n$line"
+  fi
+
+done < "${1:-}"
+
+# Output to stdout.
+echo "$trust_store"
diff --git a/main.sh b/main.sh
new file mode 100755
index 0000000..2c0fe7a
--- /dev/null
+++ b/main.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+# Run all scripts.
+
+set -o errexit  # (-e) exit immediately if any command has a non-zero exit status
+
+# Go where this script is.
+cd "$(dirname "$0")" || exit
+
+echo '=== get hosts ==='
+./get-hosts.sh
+
+echo '=== get certs ==='
+if command -v torsocks >/dev/null; then
+  ./get-certs.sh tor
+else
+  ./get-certs.sh
+fi
+
+echo '=== cert details ==='
+./cert-details.sh
+
+echo '=== Agunua ==='
+agunua/generate-trust-store.sh
+echo '=== Amfora ==='
+amfora/generate-trust-store.sh
+echo '=== Lagrange ==='
+lagrange/generate-trust-store.sh
diff --git a/test-hosts b/test-hosts
new file mode 100644
index 0000000..5736bb6
--- /dev/null
+++ b/test-hosts
@@ -0,0 +1,15 @@
+gemini.circumlunar.space
+pureXO.mom
+[purexo.mom]
+89.47.164.70
+[89.47.164.70]
+89.47.164.70:1965
+[89.47.164.70]:1965
+2a02:7b40:592f:a446::1
+[2a02:7b40:592f:a446::1]
+[2a02:7b40:592f:a446::1]:1965
+protonirockerxow.onion:443
+wikipedia.geminet.org
+wikipedia.geminet.org:1966
+gémeaux.bortzmeyer.org
+xn--gmeaux-bva.bortzmeyer.org