92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
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#include <lighttpd/base.h>
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void chunk_parser_init(chunk_parser_ctx *ctx, chunkqueue *cq) {
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ctx->cq = cq;
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chunk_parser_reset(ctx);
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}
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void chunk_parser_reset(chunk_parser_ctx *ctx) {
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ctx->bytes_in = 0;
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ctx->curi.element = NULL;
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ctx->start = 0;
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ctx->length = 0;
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ctx->buf = NULL;
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}
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handler_t chunk_parser_prepare(chunk_parser_ctx *ctx) {
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if (NULL == ctx->curi.element) {
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ctx->curi = chunkqueue_iter(ctx->cq);
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if (NULL == ctx->curi.element) return HANDLER_WAIT_FOR_EVENT;
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}
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return HANDLER_GO_ON;
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}
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handler_t chunk_parser_next(vrequest *vr, chunk_parser_ctx *ctx, char **p, char **pe) {
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off_t l;
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handler_t res;
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if (NULL == ctx->curi.element) return HANDLER_WAIT_FOR_EVENT;
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while (ctx->start >= (l = chunkiter_length(ctx->curi))) {
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chunkiter i = ctx->curi;
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/* Wait at the end of the last chunk if it gets extended */
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if (!chunkiter_next(&i)) return HANDLER_WAIT_FOR_EVENT;
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ctx->curi = i;
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ctx->start -= l;
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}
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if (NULL == ctx->curi.element) return HANDLER_WAIT_FOR_EVENT;
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if (HANDLER_GO_ON != (res = chunkiter_read(vr, ctx->curi, ctx->start, l - ctx->start, &ctx->buf, &ctx->length))) {
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return res;
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}
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*p = ctx->buf;
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*pe = ctx->buf + ctx->length;
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return HANDLER_GO_ON;
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}
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void chunk_parser_done(chunk_parser_ctx *ctx, goffset len) {
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ctx->bytes_in += len;
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ctx->start += len;
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}
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gboolean chunk_extract_to(vrequest *vr, chunk_parser_mark from, chunk_parser_mark to, GString *dest) {
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chunk_parser_mark i;
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g_string_set_size(dest, 0);
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for ( i = from; i.ci.element != to.ci.element; chunkiter_next(&i.ci) ) {
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goffset len = chunkiter_length(i.ci);
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while (i.pos < len) {
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char *buf;
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off_t we_have;
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if (HANDLER_GO_ON != chunkiter_read(vr, i.ci, i.pos, len - i.pos, &buf, &we_have)) goto error;
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g_string_append_len(dest, buf, we_have);
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i.pos += we_have;
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}
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i.pos = 0;
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}
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while (i.pos < to.pos) {
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char *buf;
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off_t we_have;
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if (HANDLER_GO_ON != chunkiter_read(vr, i.ci, i.pos, to.pos - i.pos, &buf, &we_have)) goto error;
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g_string_append_len(dest, buf, we_have);
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i.pos += we_have;
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}
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return TRUE;
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error:
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g_string_assign(dest, "");
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return FALSE;
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}
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GString* chunk_extract(vrequest *vr, chunk_parser_mark from, chunk_parser_mark to) {
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GString *str = g_string_sized_new(0);
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if (chunk_extract_to(vr, from, to, str)) return str;
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g_string_free(str, TRUE);
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return NULL;
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}
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