d105c28aad
I know that the effect of 'const' on compiler optimizations is smaller than many believe, but it provides a good insight to the caller which parameters are not modified and simplifies parallelization, in case that is desired at a later point. Throughout processing, the big structs mostly remained unmodified, with the exception of parse_range(), which added a null-byte in the "Range"- header to simplify its parsing. This commit refactors parse_range() such that it won't modify this string anymore. Additionally, the parser was made even stricter: Usually, strtoll() (which is wrapped by strtonum()) allows whitespace and plus and minus signs before the number, which is not part of the specification. The stricter parser also better differentiates now between invalid requests and range-lists. In that context, the switch in http_send_response() was replaced for better readability. Signed-off-by: Laslo Hunhold <dev@frign.de>
74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
/* See LICENSE file for copyright and license details. */
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#ifndef HTTP_H
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#define HTTP_H
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#include <limits.h>
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#define HEADER_MAX 4096
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#define FIELD_MAX 200
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enum req_field {
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REQ_HOST,
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REQ_RANGE,
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REQ_IF_MODIFIED_SINCE,
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NUM_REQ_FIELDS,
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};
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extern const char *req_field_str[];
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enum req_method {
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M_GET,
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M_HEAD,
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NUM_REQ_METHODS,
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};
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extern const char *req_method_str[];
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struct request {
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enum req_method method;
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char target[PATH_MAX];
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char field[NUM_REQ_FIELDS][FIELD_MAX];
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};
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enum status {
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S_OK = 200,
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S_PARTIAL_CONTENT = 206,
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S_MOVED_PERMANENTLY = 301,
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S_NOT_MODIFIED = 304,
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S_BAD_REQUEST = 400,
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S_FORBIDDEN = 403,
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S_NOT_FOUND = 404,
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S_METHOD_NOT_ALLOWED = 405,
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S_REQUEST_TIMEOUT = 408,
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S_RANGE_NOT_SATISFIABLE = 416,
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S_REQUEST_TOO_LARGE = 431,
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S_INTERNAL_SERVER_ERROR = 500,
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S_VERSION_NOT_SUPPORTED = 505,
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};
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extern const char *status_str[];
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enum res_field {
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RES_ACCEPT_RANGES,
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RES_ALLOW,
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RES_LOCATION,
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RES_LAST_MODIFIED,
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RES_CONTENT_LENGTH,
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RES_CONTENT_RANGE,
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RES_CONTENT_TYPE,
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NUM_RES_FIELDS,
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};
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extern const char *res_field_str[];
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struct response {
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enum status status;
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char field[NUM_RES_FIELDS][FIELD_MAX];
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};
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enum status http_send_header(int, const struct response *);
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enum status http_send_status(int, enum status);
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int http_get_request(int, struct request *);
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enum status http_send_response(int, const struct request *);
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#endif /* HTTP_H */
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