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#ifndef HTTP_H
#define HTTP_H
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
struct http_payload
{
enum http_op
{
HTTP_OP_GET,
HTTP_OP_POST
} op;
const char *resource;
struct http_cookie
{
const char *field, *value;
} cookie;
union
{
struct http_post
{
bool expect_continue;
const void *data;
size_t n;
const char *dir;
const struct http_post_file
{
const char *tmpname, *filename;
} *files;
} post;
} u;
const struct http_arg
{
char *key, *value;
} *args;
size_t n_args;
};
#define HTTP_STATUSES \
X(CONTINUE, "Continue", 100) \
X(OK, "OK", 200) \
X(SEE_OTHER, "See other", 303) \
X(BAD_REQUEST, "Bad Request", 400) \
X(UNAUTHORIZED, "Unauthorized", 401) \
X(FORBIDDEN, "Forbidden", 403) \
X(NOT_FOUND, "Not found", 404) \
X(PAYLOAD_TOO_LARGE, "Payload too large", 413) \
X(INTERNAL_ERROR, "Internal Server Error", 500)
struct http_response
{
enum http_status
{
#define X(x, y, z) HTTP_STATUS_##x,
HTTP_STATUSES
#undef X
} status;
struct http_header
{
char *header, *value;
} *headers;
union
{
const void *ro;
void *rw;
} buf;
FILE *f;
unsigned long long n;
size_t n_headers;
void (*free)(void *);
};
struct http_cfg
{
int (*read)(void *buf , size_t n, void *user);
int (*write)(const void *buf, size_t n, void *user);
int (*payload)(const struct http_payload *p, struct http_response *r,
void *user);
int (*length)(unsigned long long len, const struct http_cookie *c,
struct http_response *r, void *user);
const char *tmpdir;
void *user;
};
struct http_ctx *http_alloc(const struct http_cfg *cfg);
void http_free(struct http_ctx *h);
/* Positive return value: user input error, negative: fatal error. */
int http_update(struct http_ctx *h, bool *write, bool *close);
int http_response_add_header(struct http_response *r, const char *header,
const char *value);
char *http_cookie_create(const char *key, const char *value);
char *http_encode_url(const char *url);
char *http_decode_url(const char *url, bool spaces);
#endif /* HTTP_H */
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