# 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 RelevantOnly
SecAuditLogType Serial
SecAuditLog /var/log/nginx/modsec_audit.log

# scan uploaded files with clamv
%USE_CLAMAV_UPLOAD%

# include OWASP CRS rules
%MODSECURITY_INCLUDE_CRS%
%MODSECURITY_INCLUDE_CUSTOM_CRS%
%MODSECURITY_INCLUDE_CRS_RULES%

# include custom rules
%MODSECURITY_INCLUDE_CUSTOM_RULES%