# process rules with disruptive actions
SecRuleEngine On

# allow body checks
SecRequestBodyAccess On

# enable XML parsing
SecRule REQUEST_HEADERS:Content-Type "(?:application(?:/soap\+|/)|text/)xml" \
     "id:'200000',phase:1,t:none,t:lowercase,pass,nolog,ctl:requestBodyProcessor=XML"

# enable JSON parsing
SecRule REQUEST_HEADERS:Content-Type "application/json" \
     "id:'200001',phase:1,t:none,t:lowercase,pass,nolog,ctl:requestBodyProcessor=JSON"

# maximum data size
SecRequestBodyLimit 13107200
SecRequestBodyNoFilesLimit 131072

# reject requests if bigger than max data size
SecRequestBodyLimitAction Reject

# reject if we can't process the body
SecRule REQBODY_ERROR "!@eq 0" \
"id:'200002', phase:2,t:none,log,deny,status:400,msg:'Failed to parse request body.',logdata:'%{reqbody_error_msg}',severity:2"

# be strict with multipart/form-data body
SecRule MULTIPART_STRICT_ERROR "!@eq 0" \
"id:'200003',phase:2,t:none,log,deny,status:400, \
msg:'Multipart request body failed strict validation: \
PE %{REQBODY_PROCESSOR_ERROR}, \
BQ %{MULTIPART_BOUNDARY_QUOTED}, \
BW %{MULTIPART_BOUNDARY_WHITESPACE}, \
DB %{MULTIPART_DATA_BEFORE}, \
DA %{MULTIPART_DATA_AFTER}, \
HF %{MULTIPART_HEADER_FOLDING}, \
LF %{MULTIPART_LF_LINE}, \
SM %{MULTIPART_MISSING_SEMICOLON}, \
IQ %{MULTIPART_INVALID_QUOTING}, \
IP %{MULTIPART_INVALID_PART}, \
IH %{MULTIPART_INVALID_HEADER_FOLDING}, \
FL %{MULTIPART_FILE_LIMIT_EXCEEDED}'"
SecRule MULTIPART_UNMATCHED_BOUNDARY "@eq 1" \
    "id:'200004',phase:2,t:none,log,deny,msg:'Multipart parser detected a possible unmatched boundary.'"

# enable response body checks
SecResponseBodyAccess On
SecResponseBodyMimeType text/plain text/html text/xml application/json
SecResponseBodyLimit 524288
SecResponseBodyLimitAction ProcessPartial

# log usefull stuff
SecAuditEngine {{ MODSECURITY_SEC_AUDIT_ENGINE }}
SecAuditLogType Serial
SecAuditLog /var/log/nginx/modsec_audit.log

# include OWASP CRS configurations
{% if USE_MODSECURITY_CRS == "yes" %}
include /opt/bunkerweb/core/modsecurity/files/crs-setup.conf

# custom CRS configurations before loading rules (e.g. exclusions) 
{% if is_custom_conf("/opt/bunkerweb/configs/modsec-crs") %}
include /opt/bunkerweb/configs/modsec-crs/*.conf
{% endif %}
{% if MULTISITE == "yes" and is_custom_conf("/opt/bunkerweb/configs/modsec-crs/" + SERVER_NAME.split(" ")[0]) %}
include /opt/bunkerweb/configs/modsec-crs/{{ SERVER_NAME.split(" ")[0] }}/*.conf
{% endif %}
{% if is_custom_conf("/etc/nginx/modsec-crs") %}
include /etc/nginx/modsec-crs/*.conf
{% endif %}
{% if MULTISITE == "yes" and is_custom_conf("/etc/nginx/" + SERVER_NAME.split(" ")[0] + "/modsec-crs/") %}
include /etc/nginx/{{ SERVER_NAME.split(" ")[0] }}/modsec-crs/*.conf
{% endif %}

# unset REASON env var
SecAction "nolog,phase:1,setenv:REASON=none"

# Auto update allowed methods
{% if ALLOWED_METHODS != "" +%}
SecAction \
 "id:900200,\
  phase:1,\
  nolog,\
  pass,\
  t:none,\
  setvar:'tx.allowed_methods={{ ALLOWED_METHODS.replace("|", " ") }}'"

{% endif +%}
# include OWASP CRS rules
include /opt/bunkerweb/core/modsecurity/files/coreruleset/rules/*.conf
{% endif %}

# custom rules after loading the CRS
{% if is_custom_conf("/opt/bunkerweb/configs/modsec") %}
include /opt/bunkerweb/configs/modsec/*.conf
{% endif %}
{% if MULTISITE == "yes" and is_custom_conf("/opt/bunkerweb/configs/modsec/" + SERVER_NAME.split(" ")[0]) %}
include /opt/bunkerweb/configs/modsec/{{ SERVER_NAME.split(" ")[0] }}/*.conf
{% endif %}
{% if is_custom_conf("/etc/nginx/modsec") %}
include /etc/nginx/modsec/*.conf
{% endif %}
{% if MULTISITE == "yes" and is_custom_conf("/etc/nginx/" + SERVER_NAME.split(" ")[0] + "/modsec") %}
include /etc/nginx/{{ SERVER_NAME.split(" ")[0] }}/modsec/*.conf
{% endif %}

# set REASON env var
{% if USE_MODSECURITY_CRS == "yes" %}
SecRuleUpdateActionById 949110 "t:none,deny,status:403,setenv:REASON=modsecurity"
SecRuleUpdateActionById 959100 "t:none,deny,status:403,setenv:REASON=modsecurity"
{% endif %}