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%token_prefix TK_
%token_type {buffer *}
%extra_argument {http_resp_ctx_t *ctx}
%name http_resp_parser
%include {
#include <assert.h>
#include <string.h>
#include "http_resp.h"
#include "keyvalue.h"
#include "array.h"
#include "log.h"
}
%parse_failure {
ctx->ok = 0;
}
%type protocol { int }
%type response_hdr { http_resp * }
%type number { int }
%type headers { array * }
%type header { data_string * }
%destructor reason { buffer_free($$); }
%token_destructor { buffer_free($$); }
/* just headers + Status: ... */
response_hdr ::= header headers CRLF . {
http_resp *resp = ctx->resp;
data_string *ds;
resp->protocol = HTTP_VERSION_UNSET;
buffer_copy_string(resp->reason, ""); /* no reason */
if (NULL == (ds = (data_string *)array_get_element(resp->headers, CONST_STR_LEN("Status")))) {
resp->status = 0;
} else {
char *err;
resp->status = strtol(ds->value->ptr, &err, 10);
if (*err != '\0' && *err != ' ' && *err != '\r') {
buffer_copy_string(ctx->errmsg, "expected a number: ");
buffer_append_string_buffer(ctx->errmsg, ds->value);
buffer_append_string(ctx->errmsg, err);
ctx->ok = 0;
}
}
}
/* HTTP-Version SP Status-Code SP Reason-Phrase CRLF ... */
response_hdr ::= protocol(B) number(C) reason(D) CRLF headers CRLF . {
http_resp *resp = ctx->resp;
resp->status = C;
resp->protocol = B;
buffer_copy_string_buffer(resp->reason, D);
buffer_pool_append(ctx->unused_buffers, D);
}
/* HTTP-Version SP Status-Code CRLF ... */
response_hdr ::= protocol(B) number(C) CRLF headers CRLF . {
http_resp *resp = ctx->resp;
resp->status = C;
resp->protocol = B;
buffer_reset(resp->reason);
}
protocol(A) ::= STRING(B). {
if (buffer_is_equal_string(B, CONST_STR_LEN("HTTP/1.0"))) {
A = HTTP_VERSION_1_0;
} else if (buffer_is_equal_string(B, CONST_STR_LEN("HTTP/1.1"))) {
A = HTTP_VERSION_1_1;
} else {
buffer_copy_string(ctx->errmsg, "unknown protocol: ");
buffer_append_string_buffer(ctx->errmsg, B);
ctx->ok = 0;
}
buffer_pool_append(ctx->unused_buffers, B);
}
number(A) ::= STRING(B). {
char *err;
A = strtol(B->ptr, &err, 10);
if (*err != '\0') {
buffer_copy_string(ctx->errmsg, "expected a number, got: ");
buffer_append_string_buffer(ctx->errmsg, B);
ctx->ok = 0;
}
buffer_pool_append(ctx->unused_buffers, B);
}
reason(A) ::= STRING(B). {
A = B;
}
reason(A) ::= reason(C) STRING(B). {
A = C;
buffer_append_string(A, " ");
buffer_append_string_buffer(A, B);
buffer_pool_append(ctx->unused_buffers, B);
}
headers ::= headers header.
headers ::= .
header(HDR) ::= STRING(A) COLON STRING(B) CRLF. {
http_resp *resp = ctx->resp;
if (NULL == (HDR = (data_string *)array_get_unused_element(resp->headers, TYPE_STRING))) {
HDR = data_response_init();
}
buffer_copy_string_buffer(HDR->key, A);
buffer_copy_string_buffer(HDR->value, B);
buffer_pool_append(ctx->unused_buffers, A);
buffer_pool_append(ctx->unused_buffers, B);
array_insert_unique(resp->headers, (data_unset *)HDR);
}
/* empty headers */
header(HDR) ::= STRING(A) COLON CRLF. {
http_resp *resp = ctx->resp;
if (NULL == (HDR = (data_string *)array_get_unused_element(resp->headers, TYPE_STRING))) {
HDR = data_response_init();
}
buffer_copy_string_buffer(HDR->key, A);
buffer_copy_string(HDR->value, "");
buffer_pool_append(ctx->unused_buffers, A);
array_insert_unique(resp->headers, (data_unset *)HDR);
}
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