Moved http.c and http.h from src/net to src
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src/http.h
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196
src/http.h
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/**
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* Necronda Web Server
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* HTTP implementation (header file)
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* src/net/http.h
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* Lorenz Stechauner, 2020-12-09
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*/
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#ifndef NECRONDA_SERVER_HTTP_H
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#define NECRONDA_SERVER_HTTP_H
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typedef struct {
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unsigned short code;
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char type[16];
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char msg[32];
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} http_status;
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typedef struct {
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unsigned short code;
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char *err_msg;
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} http_error_msg;
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typedef struct {
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char field_num;
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char *fields[64][2];
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} http_hdr;
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typedef struct {
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char method[8];
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char *uri;
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char version[3];
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http_hdr hdr;
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} http_req;
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typedef struct {
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http_status *status;
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char version[3];
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http_hdr hdr;
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} http_res;
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http_status http_statuses[] = {
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{100, "Informational", "Continue"},
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{101, "Informational", "Switching Protocols"},
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{200, "Success", "OK"},
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{201, "Success", "Created"},
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{202, "Success", "Accepted"},
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{203, "Success", "Non-Authoritative Information"},
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{204, "Success", "No Content"},
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{205, "Success", "Reset Content"},
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{206, "Success", "Partial Content"},
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{300, "Redirection", "Multiple Choices"},
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{301, "Redirection", "Moved Permanently"},
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{302, "Redirection", "Found"},
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{303, "Redirection", "See Other"},
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{304, "Redirection", "Not Modified"},
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{305, "Redirection", "Use Proxy"},
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{307, "Redirection", "Temporary Redirect"},
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{308, "Redirection", "Permanent Redirect"},
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{400, "Client Error", "Bad Request"},
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{401, "Client Error", "Unauthorized"},
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{402, "Client Error", "Payment Required"},
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{403, "Client Error", "Forbidden"},
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{404, "Client Error", "Not Found"},
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{405, "Client Error", "Method Not Allowed"},
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{406, "Client Error", "Not Acceptable"},
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{407, "Client Error", "Proxy Authentication Required"},
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{408, "Client Error", "Request Timeout"},
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{409, "Client Error", "Conflict"},
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{410, "Client Error", "Gone"},
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{411, "Client Error", "Length Required"},
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{412, "Client Error", "Precondition Failed"},
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{413, "Client Error", "Request Entity Too Large"},
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{414, "Client Error", "Request-URI Too Long"},
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{415, "Client Error", "Unsupported Media Type"},
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{416, "Client Error", "Requested Range Not Satisfiable"},
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{417, "Client Error", "Expectation Failed"},
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{500, "Server Error", "Internal Server Error"},
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{501, "Server Error", "Not Implemented"},
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{502, "Server Error", "Bad Gateway"},
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{503, "Server Error", "Service Unavailable"},
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{504, "Server Error", "Gateway Timeout"},
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{505, "Server Error", "HTTP Version Not Supported"},
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};
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http_error_msg http_error_messages[] = {
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{400, "The request could not be understood by the server due to malformed syntax."},
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{401, "The request requires user authentication."},
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{403, "The server understood the request, but is refusing to fulfill it."},
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{404, "The server has not found anything matching the Request-URI."},
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{405, "The method specified in the Request-Line is not allowed for the resource identified by the Request-URI."},
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{406, "The resource identified by the request is only capable of generating response entities which have content characteristics not acceptable according to the accept headers sent in the request."},
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{407, "The request requires user authentication on the proxy."},
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{408, "The client did not produce a request within the time that the server was prepared to wait."},
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{409, "The request could not be completed due to a conflict with the current state of the resource."},
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{410, "The requested resource is no longer available at the server and no forwarding address is known."},
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{411, "The server refuses to accept the request without a defined Content-Length."},
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{412, "The precondition given in one or more of the request-header fields evaluated to false when it was tested on the server."},
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{413, "The server is refusing to process a request because the request entity is larger than the server is willing or able to process."},
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{414, "The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret."},
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{415, "The server is refusing to service the request because the entity of the request is in a format not supported by the requested resource for the requested method."},
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{417, "The expectation given in an Expect request-header field could not be met by this server, or, if the server is a proxy, the server has unambiguous evidence that the request could not be met by the next-hop server."},
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{500, "The server encountered an unexpected condition which prevented it from fulfilling the request."},
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{501, "The server does not support the functionality required to fulfill the request."},
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{502, "The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request."},
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{503, "The server is currently unable to handle the request due to a temporary overloading or maintenance of the server."},
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{504, "he server, while acting as a gateway or proxy, did not receive a timely response from the upstream server specified by the URI or some other auxiliary server it needed to access in attempting to complete the request."},
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{505, "The server does not support, or refuses to support, the HTTP protocol version that was used in the request message."}
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};
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const char *http_error_document =
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"<!DOCTYPE html>\n"
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"<html lang=\"en\">\n"
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"<head>\n"
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" <title>%1$i %2$s</title>\n"
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" <meta charset=\"UTF-8\"/>\n"
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" <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"/>\n"
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" <style>\n"
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" html {\n"
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" font-family: \"Arial\", sans-serif;\n"
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" --error: #C00000;\n"
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" --info: #E0C000;\n"
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" --color: var(--%5$s);\n"
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" }\n"
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" body {\n"
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" background-color: #F0F0F0;\n"
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" margin: 0.5em;\n"
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" }\n"
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" main {\n"
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" max-width: 600px;\n"
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" margin: 2em auto;\n"
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" background-color: #FFFFFF;\n"
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" border: 1px solid var(--color);\n"
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" border-radius: 4px;\n"
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" padding: 1em 2em;\n"
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" }\n"
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" h1, h2, h3, h4, h5, h6, h7 {\n"
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" text-align: center;\n"
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" color: var(--color);\n"
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" }\n"
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" h1 {\n"
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" margin: 0.5em 0;\n"
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" font-size: 1.5em;\n"
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" }\n"
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" p {\n"
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" text-align: center;\n"
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" }\n"
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" div.footer {\n"
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" color: #808080;\n"
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" font-size: 0.75em;\n"
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" text-align: center;\n"
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" margin: 0.5em 0;\n"
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" }\n"
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" </style>\n"
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"</head>\n"
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"<body>\n"
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" <main>\n"
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" <h1>%1$i %2$s</h1>\n"
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" <p>%3$s</p>\n"
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" <p>%4$s</p>\n"
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" <div class=\"footer\">Necronda web server " NECRONDA_VERSION "</div>\n"
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" </main>\n"
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"</body>\n"
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"</html>\n";
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void http_to_camel_case(char *str);
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void http_free_hdr(http_hdr *hdr);
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void http_free_req(http_req *req);
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void http_free_res(http_res *res);
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int http_receive_request(sock *client, http_req *req);
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char *http_get_header_field(http_hdr *hdr, const char *field_name);
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void http_add_header_field(http_hdr *hdr, const char *field_name, const char *field_value);
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int http_send_response(sock *client, http_res *res);
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http_status *http_get_status(unsigned short status_code);
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http_error_msg *http_get_error_msg(unsigned short status_code);
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const char *http_get_status_color(http_status *status);
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char *http_format_date(time_t time, char *buf, size_t size);
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char *http_get_date(char *buf, size_t size);
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#endif //NECRONDA_SERVER_HTTP_H
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