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-rw-r--r--uhttp.c263
1 files changed, 0 insertions, 263 deletions
diff --git a/uhttp.c b/uhttp.c
deleted file mode 100644
index 1d7e190..0000000
--- a/uhttp.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * Copyright (C) 2021 Mikhail Burakov. This file is part of MQhTTp.
- *
- * MQhTTp is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * MQhTTp is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with MQhTTp. If not, see <https://www.gnu.org/licenses/>.
- */
-
-#include "uhttp.h"
-
-#include <ctype.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-
-struct Uhttp {
- struct {
- char* data;
- size_t alloc;
- size_t size;
- } buffer;
- struct {
- const char* method;
- const char* target;
- const char* body;
- size_t body_size;
- } public;
- struct {
- _Bool (*state)(struct Uhttp*, char*);
- const char* field_name;
- const char* field_value;
- char* maybe_ows;
- _Bool maybe_eol;
- } parser;
-};
-
-static _Bool StrEq(const char* a, const char* b) {
- for (; *a && *b; a++, b++) {
- if (tolower(*a) != tolower(*b)) return 0;
- }
- return *a == *b;
-}
-
-static _Bool UhttpOnMethod(struct Uhttp* uhttp, char* glyph);
-static _Bool UhttpOnTarget(struct Uhttp* uhttp, char* glyph);
-static _Bool UhttpOnVersion(struct Uhttp* uhttp, char* glyph);
-static _Bool UhttpOnFieldName(struct Uhttp* uhttp, char* glyph);
-static _Bool UhttpOnFieldValue(struct Uhttp* uhttp, char* glyph);
-static _Bool UhttpOnBody(struct Uhttp* uhttp, char* glyph);
-static _Bool UhttpOnStopped(struct Uhttp* uhttp, char* glyph);
-
-static _Bool UhttpOnMethod(struct Uhttp* uhttp, char* glyph) {
- switch (*glyph) {
- case ' ':
- if (!uhttp->public.method) return 0;
- uhttp->parser.state = UhttpOnTarget;
- *glyph = 0;
- return 1;
- default:
- if (!isgraph(*glyph)) return 0;
- if (!uhttp->public.method) uhttp->public.method = glyph;
- return 1;
- }
-}
-
-static _Bool UhttpOnTarget(struct Uhttp* uhttp, char* glyph) {
- switch (*glyph) {
- case ' ':
- if (!uhttp->public.target) return 0;
- uhttp->parser.state = UhttpOnVersion;
- *glyph = 0;
- return 1;
- default:
- if (!isgraph(*glyph)) return 0;
- if (!uhttp->public.target) uhttp->public.target = glyph;
- return 1;
- }
-}
-
-static _Bool UhttpOnVersion(struct Uhttp* uhttp, char* glyph) {
- switch (*glyph) {
- case '\r':
- if (uhttp->parser.maybe_eol) return 0;
- uhttp->parser.maybe_eol = 1;
- return 1;
- case '\n':
- if (!uhttp->parser.maybe_eol) return 0;
- uhttp->parser.state = UhttpOnFieldName;
- uhttp->parser.maybe_eol = 0;
- return 1;
- default:
- if (uhttp->parser.maybe_eol) return 0;
- if (!isprint(*glyph)) return 0;
- return 1;
- }
-}
-
-static _Bool UhttpOnFieldName(struct Uhttp* uhttp, char* glyph) {
- switch (*glyph) {
- case '\r':
- if (uhttp->parser.maybe_eol) return 0;
- uhttp->parser.maybe_eol = 1;
- return 1;
- case '\n':
- if (!uhttp->parser.maybe_eol) return 0;
- uhttp->parser.state =
- uhttp->public.body_size ? UhttpOnBody : UhttpOnStopped;
- return 1;
- case ' ':
- return 0;
- case ':':
- if (uhttp->parser.maybe_eol) return 0;
- if (!uhttp->parser.field_name) return 0;
- uhttp->parser.state = UhttpOnFieldValue;
- uhttp->parser.field_value = NULL;
- *glyph = 0;
- return 1;
- default:
- if (uhttp->parser.maybe_eol) return 0;
- if (!isgraph(*glyph)) return 0;
- if (!uhttp->parser.field_name) uhttp->parser.field_name = glyph;
- return 1;
- }
-}
-
-static _Bool UhttpOnFieldValue(struct Uhttp* uhttp, char* glyph) {
- switch (*glyph) {
- case '\r':
- if (uhttp->parser.maybe_eol) return 0;
- uhttp->parser.maybe_ows = glyph;
- uhttp->parser.maybe_eol = 1;
- return 1;
- case '\n':
- if (!uhttp->parser.maybe_eol) return 0;
- if (!uhttp->parser.field_value) return 0;
- *uhttp->parser.maybe_ows = 0;
- if (!uhttp->public.body_size &&
- StrEq(uhttp->parser.field_name, "Content-Length"))
- uhttp->public.body_size = (size_t)atoi(uhttp->parser.field_value);
- uhttp->parser.state = UhttpOnFieldName;
- uhttp->parser.field_name = NULL;
- uhttp->parser.maybe_eol = 0;
- return 1;
- case '\t':
- case ' ':
- if (uhttp->parser.maybe_eol) return 0;
- if (!uhttp->parser.field_value) return 1;
- if (!uhttp->parser.maybe_ows) uhttp->parser.maybe_ows = glyph;
- return 1;
- default:
- if (uhttp->parser.maybe_eol) return 0;
- if (!isgraph(*glyph)) return 0;
- if (!uhttp->parser.field_value) uhttp->parser.field_value = glyph;
- uhttp->parser.maybe_ows = NULL;
- return 1;
- }
-}
-
-static _Bool UhttpOnBody(struct Uhttp* uhttp, char* glyph) {
- if (!uhttp->public.body) uhttp->public.body = glyph;
- ptrdiff_t body_size = glyph - uhttp->public.body + 1;
- if ((size_t)body_size == uhttp->public.body_size)
- uhttp->parser.state = UhttpOnStopped;
- return 1;
-}
-
-static _Bool UhttpOnStopped(struct Uhttp* uhttp, char* glyph) {
- (void)uhttp;
- (void)glyph;
- return 0;
-}
-
-static void UhttpRelocateBuffer(struct Uhttp* uhttp, char* data) {
- if (uhttp->public.method)
- uhttp->public.method = data + (uhttp->public.method - uhttp->buffer.data);
- if (uhttp->public.target)
- uhttp->public.target = data + (uhttp->public.target - uhttp->buffer.data);
- if (uhttp->public.body)
- uhttp->public.body = data + (uhttp->public.body - uhttp->buffer.data);
- if (uhttp->parser.field_name) {
- uhttp->parser.field_name =
- data + (uhttp->parser.field_name - uhttp->buffer.data);
- }
- if (uhttp->parser.field_value) {
- uhttp->parser.field_value =
- data + (uhttp->parser.field_value - uhttp->buffer.data);
- }
- if (uhttp->parser.maybe_ows) {
- uhttp->parser.maybe_ows =
- data + (uhttp->parser.maybe_ows - uhttp->buffer.data);
- }
- uhttp->buffer.data = data;
-}
-
-struct Uhttp* UhttpCreate() {
- struct Uhttp* result = calloc(1, sizeof(struct Uhttp));
- UhttpReset(result);
- return result;
-}
-
-void UhttpDestroy(struct Uhttp* uhttp) {
- free(uhttp->buffer.data);
- free(uhttp);
-}
-
-void UhttpReset(struct Uhttp* uhttp) {
- const struct Uhttp reset = {.buffer.data = uhttp->buffer.data,
- .buffer.alloc = uhttp->buffer.alloc,
- .parser.state = UhttpOnMethod};
- *uhttp = reset;
-}
-
-void* UhttpAllocate(struct Uhttp* uhttp, size_t size) {
- size_t alloc = uhttp->buffer.size + size;
- if (alloc > uhttp->buffer.alloc) {
- char* data = realloc(uhttp->buffer.data, alloc);
- if (!data) return NULL;
- if (data != uhttp->buffer.data) UhttpRelocateBuffer(uhttp, data);
- uhttp->buffer.alloc = alloc;
- }
- return uhttp->buffer.data + uhttp->buffer.size;
-}
-
-enum UhttpResult UhttpConsume(struct Uhttp* uhttp, size_t size) {
- if (uhttp->buffer.size + size > uhttp->buffer.alloc)
- return kUhttpResultTerminate;
- size_t end = uhttp->buffer.size + size;
- for (; uhttp->buffer.size < end; uhttp->buffer.size++) {
- if (!uhttp->parser.state(uhttp, &uhttp->buffer.data[uhttp->buffer.size])) {
- uhttp->parser.state = UhttpOnStopped;
- return kUhttpResultFailure;
- }
- if (uhttp->parser.state == UhttpOnStopped) {
- return kUhttpResultFinished;
- }
- }
- return kUhttpResultWantMore;
-}
-
-const char* UhttpGetMethod(const struct Uhttp* uhttp) {
- return uhttp->public.method;
-}
-
-const char* UhttpGetTarget(const struct Uhttp* uhttp) {
- return uhttp->public.target;
-}
-
-const char* UhttpGetBody(const struct Uhttp* uhttp) {
- return uhttp->public.body;
-}
-
-size_t UhttpGetBodySize(const struct Uhttp* uhttp) {
- return uhttp->public.body_size;
-}
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