mirror of
https://github.com/mail-in-a-box/mailinabox.git
synced 2024-11-25 02:47:04 +00:00
53 lines
1.8 KiB
Bash
Executable File
53 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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#
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# SSL Certificate
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# ---------------
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# Create a self-signed SSL certificate if one has not yet been created.
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#
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# The certificate is for PRIMARY_HOSTNAME specifically and is used for:
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#
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# * IMAP
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# * SMTP submission (port 587) and opportunistic TLS (when on the receiving end)
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# * the DNSSEC DANE TLSA record for SMTP
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# * HTTPS (for PRIMARY_HOSTNAME only)
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#
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# When other domains besides PRIMARY_HOSTNAME are served over HTTPS,
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# we generate a domain-specific self-signed certificate in the management
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# daemon (web_update.py) as needed.
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source setup/functions.sh # load our functions
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source /etc/mailinabox.conf # load global vars
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apt_install openssl
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mkdir -p $STORAGE_ROOT/ssl
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# Generate a new private key.
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# Set the umask so the key file is not world-readable.
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if [ ! -f $STORAGE_ROOT/ssl/ssl_private_key.pem ]; then
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(umask 077; hide_output \
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openssl genrsa -out $STORAGE_ROOT/ssl/ssl_private_key.pem 2048)
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fi
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# Generate a certificate signing request.
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if [ ! -f $STORAGE_ROOT/ssl/ssl_cert_sign_req.csr ]; then
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hide_output \
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openssl req -new -key $STORAGE_ROOT/ssl/ssl_private_key.pem -out $STORAGE_ROOT/ssl/ssl_cert_sign_req.csr \
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-sha256 -subj "/C=$CSR_COUNTRY/ST=/L=/O=/CN=$PRIMARY_HOSTNAME"
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fi
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# Generate a SSL certificate by self-signing.
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if [ ! -f $STORAGE_ROOT/ssl/ssl_certificate.pem ]; then
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hide_output \
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openssl x509 -req -days 365 \
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-in $STORAGE_ROOT/ssl/ssl_cert_sign_req.csr -signkey $STORAGE_ROOT/ssl/ssl_private_key.pem -out $STORAGE_ROOT/ssl/ssl_certificate.pem
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fi
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# For nginx and postfix, pre-generate some Diffie-Hellman cipher bits which is
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# used when a Diffie-Hellman cipher is selected during TLS negotiation. Diffie-Hellman
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# provides Perfect Forward Security. openssl's default is 1024 bits, but we'll
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# create 2048.
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if [ ! -f $STORAGE_ROOT/ssl/dh2048.pem ]; then
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openssl dhparam -out $STORAGE_ROOT/ssl/dh2048.pem 2048
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fi
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