194 lines
8.7 KiB
C
194 lines
8.7 KiB
C
/**
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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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#define HTTP_PRESERVE 0
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#define HTTP_LOWER 1
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#define HTTP_CAMEL 2
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#define HTTP_REMOVE_ONE 0
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#define HTTP_REMOVE_ALL 1
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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[16];
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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", "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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{416, "None of the ranges in the request's Range header field overlap the current extent of the selected resource or that the set of ranges requested has been rejected due to invalid ranges or an excessive request of small or overlapping ranges."},
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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, "The 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_default_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 - %7$s</title>\n"
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" <meta charset=\"UTF-8\"/>\n"
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" <meta name=\"theme-color\" content=\"%6$s\"/>\n"
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" <meta name=\"apple-mobile-web-app-status-bar-style\" content=\"black-translucent\"/>\n"
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" <meta name=\"viewport\" content=\"width=device-width,initial-scale=1.0\"/>\n"
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"%5$s"
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" <style>\n"
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" html{font-family:\"Arial\",sans-serif;--error:#C00000;--info:#E0C000;--color:var(--%4$s);}\n"
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" body{background-color:#F0F0F0;margin:0.5em;}\n"
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" main{max-width:600px;margin:2em auto;background-color:#FFFFFF;border: 1px solid var(--color);border-radius:4px;padding:1em 2em;}\n"
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" h1,h2,h3,h4,h5,h6,h7{text-align:center;color:var(--color);}\n"
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" h1{margin:0.5em 0;font-size:1.5em;}\n"
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" p{text-align:center;}\n"
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" div.footer{color:#808080;font-size:0.75em;text-align:center;margin:0.5em 0;}\n"
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" div.footer a{color:#808080;}\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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"%3$s"
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" <div class=\"footer\"><a href=\"https://%7$s/\">%7$s</a> - Necronda web server " NECRONDA_VERSION "</div>\n"
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" </main>\n"
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"</body>\n"
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"</html>\n";
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const char *http_error_document =
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" <h1>%1$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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const char *http_error_icon =
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" <link rel=\"shortcut icon\" type=\"image/svg+xml\" sizes=\"any\" href=\"data:image/svg+xml;base64,"
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"PHN2ZyB3aWR0aD0iMTYiIGhlaWdodD0iMTYiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAw"
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"L3N2ZyI+PHRleHQgeD0iNCIgeT0iMTIiIGZpbGw9IiNDMDAwMDAiIHN0eWxlPSJmb250LWZhbWls"
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"eTonQXJpYWwnLHNhbnMtc2VyaWYiPjooPC90ZXh0Pjwvc3ZnPgo=\"/>\n";
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void http_to_camel_case(char *str, int mode);
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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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int http_parse_header_field(http_hdr *hdr, const char *buf, const char *end_ptr) ;
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char *http_get_header_field(const 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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void http_remove_header_field(http_hdr *hdr, const char *field_name, int mode);
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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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