diff options
Diffstat (limited to 'app/nginx/src/http/ngx_http_parse.c')
-rw-r--r-- | app/nginx/src/http/ngx_http_parse.c | 2379 |
1 files changed, 0 insertions, 2379 deletions
diff --git a/app/nginx/src/http/ngx_http_parse.c b/app/nginx/src/http/ngx_http_parse.c deleted file mode 100644 index 9f99473..0000000 --- a/app/nginx/src/http/ngx_http_parse.c +++ /dev/null @@ -1,2379 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_http.h> - - -static uint32_t usual[] = { - 0xffffdbfe, /* 1111 1111 1111 1111 1101 1011 1111 1110 */ - - /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */ - 0x7fff37d6, /* 0111 1111 1111 1111 0011 0111 1101 0110 */ - - /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */ -#if (NGX_WIN32) - 0xefffffff, /* 1110 1111 1111 1111 1111 1111 1111 1111 */ -#else - 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */ -#endif - - /* ~}| {zyx wvut srqp onml kjih gfed cba` */ - 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */ - - 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */ - 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */ - 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */ - 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */ -}; - - -#if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) - -#define ngx_str3_cmp(m, c0, c1, c2, c3) \ - *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) - -#define ngx_str3Ocmp(m, c0, c1, c2, c3) \ - *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) - -#define ngx_str4cmp(m, c0, c1, c2, c3) \ - *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) - -#define ngx_str5cmp(m, c0, c1, c2, c3, c4) \ - *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \ - && m[4] == c4 - -#define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \ - *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \ - && (((uint32_t *) m)[1] & 0xffff) == ((c5 << 8) | c4) - -#define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \ - *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \ - && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) - -#define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \ - *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \ - && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) - -#define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \ - *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \ - && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) \ - && m[8] == c8 - -#else /* !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) */ - -#define ngx_str3_cmp(m, c0, c1, c2, c3) \ - m[0] == c0 && m[1] == c1 && m[2] == c2 - -#define ngx_str3Ocmp(m, c0, c1, c2, c3) \ - m[0] == c0 && m[2] == c2 && m[3] == c3 - -#define ngx_str4cmp(m, c0, c1, c2, c3) \ - m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 - -#define ngx_str5cmp(m, c0, c1, c2, c3, c4) \ - m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4 - -#define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \ - m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \ - && m[4] == c4 && m[5] == c5 - -#define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \ - m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \ - && m[4] == c4 && m[5] == c5 && m[6] == c6 - -#define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \ - m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \ - && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7 - -#define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \ - m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \ - && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7 && m[8] == c8 - -#endif - - -/* gcc, icc, msvc and others compile these switches as an jump table */ - -ngx_int_t -ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b) -{ - u_char c, ch, *p, *m; - enum { - sw_start = 0, - sw_method, - sw_spaces_before_uri, - sw_schema, - sw_schema_slash, - sw_schema_slash_slash, - sw_host_start, - sw_host, - sw_host_end, - sw_host_ip_literal, - sw_port, - sw_host_http_09, - sw_after_slash_in_uri, - sw_check_uri, - sw_check_uri_http_09, - sw_uri, - sw_http_09, - sw_http_H, - sw_http_HT, - sw_http_HTT, - sw_http_HTTP, - sw_first_major_digit, - sw_major_digit, - sw_first_minor_digit, - sw_minor_digit, - sw_spaces_after_digit, - sw_almost_done - } state; - - state = r->state; - - for (p = b->pos; p < b->last; p++) { - ch = *p; - - switch (state) { - - /* HTTP methods: GET, HEAD, POST */ - case sw_start: - r->request_start = p; - - if (ch == CR || ch == LF) { - break; - } - - if ((ch < 'A' || ch > 'Z') && ch != '_' && ch != '-') { - return NGX_HTTP_PARSE_INVALID_METHOD; - } - - state = sw_method; - break; - - case sw_method: - if (ch == ' ') { - r->method_end = p - 1; - m = r->request_start; - - switch (p - m) { - - case 3: - if (ngx_str3_cmp(m, 'G', 'E', 'T', ' ')) { - r->method = NGX_HTTP_GET; - break; - } - - if (ngx_str3_cmp(m, 'P', 'U', 'T', ' ')) { - r->method = NGX_HTTP_PUT; - break; - } - - break; - - case 4: - if (m[1] == 'O') { - - if (ngx_str3Ocmp(m, 'P', 'O', 'S', 'T')) { - r->method = NGX_HTTP_POST; - break; - } - - if (ngx_str3Ocmp(m, 'C', 'O', 'P', 'Y')) { - r->method = NGX_HTTP_COPY; - break; - } - - if (ngx_str3Ocmp(m, 'M', 'O', 'V', 'E')) { - r->method = NGX_HTTP_MOVE; - break; - } - - if (ngx_str3Ocmp(m, 'L', 'O', 'C', 'K')) { - r->method = NGX_HTTP_LOCK; - break; - } - - } else { - - if (ngx_str4cmp(m, 'H', 'E', 'A', 'D')) { - r->method = NGX_HTTP_HEAD; - break; - } - } - - break; - - case 5: - if (ngx_str5cmp(m, 'M', 'K', 'C', 'O', 'L')) { - r->method = NGX_HTTP_MKCOL; - break; - } - - if (ngx_str5cmp(m, 'P', 'A', 'T', 'C', 'H')) { - r->method = NGX_HTTP_PATCH; - break; - } - - if (ngx_str5cmp(m, 'T', 'R', 'A', 'C', 'E')) { - r->method = NGX_HTTP_TRACE; - break; - } - - break; - - case 6: - if (ngx_str6cmp(m, 'D', 'E', 'L', 'E', 'T', 'E')) { - r->method = NGX_HTTP_DELETE; - break; - } - - if (ngx_str6cmp(m, 'U', 'N', 'L', 'O', 'C', 'K')) { - r->method = NGX_HTTP_UNLOCK; - break; - } - - break; - - case 7: - if (ngx_str7_cmp(m, 'O', 'P', 'T', 'I', 'O', 'N', 'S', ' ')) - { - r->method = NGX_HTTP_OPTIONS; - } - - break; - - case 8: - if (ngx_str8cmp(m, 'P', 'R', 'O', 'P', 'F', 'I', 'N', 'D')) - { - r->method = NGX_HTTP_PROPFIND; - } - - break; - - case 9: - if (ngx_str9cmp(m, - 'P', 'R', 'O', 'P', 'P', 'A', 'T', 'C', 'H')) - { - r->method = NGX_HTTP_PROPPATCH; - } - - break; - } - - state = sw_spaces_before_uri; - break; - } - - if ((ch < 'A' || ch > 'Z') && ch != '_' && ch != '-') { - return NGX_HTTP_PARSE_INVALID_METHOD; - } - - break; - - /* space* before URI */ - case sw_spaces_before_uri: - - if (ch == '/') { - r->uri_start = p; - state = sw_after_slash_in_uri; - break; - } - - c = (u_char) (ch | 0x20); - if (c >= 'a' && c <= 'z') { - r->schema_start = p; - state = sw_schema; - break; - } - - switch (ch) { - case ' ': - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - case sw_schema: - - c = (u_char) (ch | 0x20); - if (c >= 'a' && c <= 'z') { - break; - } - - switch (ch) { - case ':': - r->schema_end = p; - state = sw_schema_slash; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - case sw_schema_slash: - switch (ch) { - case '/': - state = sw_schema_slash_slash; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - case sw_schema_slash_slash: - switch (ch) { - case '/': - state = sw_host_start; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - case sw_host_start: - - r->host_start = p; - - if (ch == '[') { - state = sw_host_ip_literal; - break; - } - - state = sw_host; - - /* fall through */ - - case sw_host: - - c = (u_char) (ch | 0x20); - if (c >= 'a' && c <= 'z') { - break; - } - - if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') { - break; - } - - /* fall through */ - - case sw_host_end: - - r->host_end = p; - - switch (ch) { - case ':': - state = sw_port; - break; - case '/': - r->uri_start = p; - state = sw_after_slash_in_uri; - break; - case ' ': - /* - * use single "/" from request line to preserve pointers, - * if request line will be copied to large client buffer - */ - r->uri_start = r->schema_end + 1; - r->uri_end = r->schema_end + 2; - state = sw_host_http_09; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - case sw_host_ip_literal: - - if (ch >= '0' && ch <= '9') { - break; - } - - c = (u_char) (ch | 0x20); - if (c >= 'a' && c <= 'z') { - break; - } - - switch (ch) { - case ':': - break; - case ']': - state = sw_host_end; - break; - case '-': - case '.': - case '_': - case '~': - /* unreserved */ - break; - case '!': - case '$': - case '&': - case '\'': - case '(': - case ')': - case '*': - case '+': - case ',': - case ';': - case '=': - /* sub-delims */ - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - case sw_port: - if (ch >= '0' && ch <= '9') { - break; - } - - switch (ch) { - case '/': - r->port_end = p; - r->uri_start = p; - state = sw_after_slash_in_uri; - break; - case ' ': - r->port_end = p; - /* - * use single "/" from request line to preserve pointers, - * if request line will be copied to large client buffer - */ - r->uri_start = r->schema_end + 1; - r->uri_end = r->schema_end + 2; - state = sw_host_http_09; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - /* space+ after "http://host[:port] " */ - case sw_host_http_09: - switch (ch) { - case ' ': - break; - case CR: - r->http_minor = 9; - state = sw_almost_done; - break; - case LF: - r->http_minor = 9; - goto done; - case 'H': - r->http_protocol.data = p; - state = sw_http_H; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - - /* check "/.", "//", "%", and "\" (Win32) in URI */ - case sw_after_slash_in_uri: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - state = sw_check_uri; - break; - } - - switch (ch) { - case ' ': - r->uri_end = p; - state = sw_check_uri_http_09; - break; - case CR: - r->uri_end = p; - r->http_minor = 9; - state = sw_almost_done; - break; - case LF: - r->uri_end = p; - r->http_minor = 9; - goto done; - case '.': - r->complex_uri = 1; - state = sw_uri; - break; - case '%': - r->quoted_uri = 1; - state = sw_uri; - break; - case '/': - r->complex_uri = 1; - state = sw_uri; - break; -#if (NGX_WIN32) - case '\\': - r->complex_uri = 1; - state = sw_uri; - break; -#endif - case '?': - r->args_start = p + 1; - state = sw_uri; - break; - case '#': - r->complex_uri = 1; - state = sw_uri; - break; - case '+': - r->plus_in_uri = 1; - break; - case '\0': - return NGX_HTTP_PARSE_INVALID_REQUEST; - default: - state = sw_check_uri; - break; - } - break; - - /* check "/", "%" and "\" (Win32) in URI */ - case sw_check_uri: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - break; - } - - switch (ch) { - case '/': -#if (NGX_WIN32) - if (r->uri_ext == p) { - r->complex_uri = 1; - state = sw_uri; - break; - } -#endif - r->uri_ext = NULL; - state = sw_after_slash_in_uri; - break; - case '.': - r->uri_ext = p + 1; - break; - case ' ': - r->uri_end = p; - state = sw_check_uri_http_09; - break; - case CR: - r->uri_end = p; - r->http_minor = 9; - state = sw_almost_done; - break; - case LF: - r->uri_end = p; - r->http_minor = 9; - goto done; -#if (NGX_WIN32) - case '\\': - r->complex_uri = 1; - state = sw_after_slash_in_uri; - break; -#endif - case '%': - r->quoted_uri = 1; - state = sw_uri; - break; - case '?': - r->args_start = p + 1; - state = sw_uri; - break; - case '#': - r->complex_uri = 1; - state = sw_uri; - break; - case '+': - r->plus_in_uri = 1; - break; - case '\0': - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - /* space+ after URI */ - case sw_check_uri_http_09: - switch (ch) { - case ' ': - break; - case CR: - r->http_minor = 9; - state = sw_almost_done; - break; - case LF: - r->http_minor = 9; - goto done; - case 'H': - r->http_protocol.data = p; - state = sw_http_H; - break; - default: - r->space_in_uri = 1; - state = sw_check_uri; - p--; - break; - } - break; - - - /* URI */ - case sw_uri: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - break; - } - - switch (ch) { - case ' ': - r->uri_end = p; - state = sw_http_09; - break; - case CR: - r->uri_end = p; - r->http_minor = 9; - state = sw_almost_done; - break; - case LF: - r->uri_end = p; - r->http_minor = 9; - goto done; - case '#': - r->complex_uri = 1; - break; - case '\0': - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - /* space+ after URI */ - case sw_http_09: - switch (ch) { - case ' ': - break; - case CR: - r->http_minor = 9; - state = sw_almost_done; - break; - case LF: - r->http_minor = 9; - goto done; - case 'H': - r->http_protocol.data = p; - state = sw_http_H; - break; - default: - r->space_in_uri = 1; - state = sw_uri; - p--; - break; - } - break; - - case sw_http_H: - switch (ch) { - case 'T': - state = sw_http_HT; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - case sw_http_HT: - switch (ch) { - case 'T': - state = sw_http_HTT; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - case sw_http_HTT: - switch (ch) { - case 'P': - state = sw_http_HTTP; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - case sw_http_HTTP: - switch (ch) { - case '/': - state = sw_first_major_digit; - break; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - /* first digit of major HTTP version */ - case sw_first_major_digit: - if (ch < '1' || ch > '9') { - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - - r->http_major = ch - '0'; - state = sw_major_digit; - break; - - /* major HTTP version or dot */ - case sw_major_digit: - if (ch == '.') { - state = sw_first_minor_digit; - break; - } - - if (ch < '0' || ch > '9') { - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - - if (r->http_major > 99) { - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - - r->http_major = r->http_major * 10 + ch - '0'; - break; - - /* first digit of minor HTTP version */ - case sw_first_minor_digit: - if (ch < '0' || ch > '9') { - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - - r->http_minor = ch - '0'; - state = sw_minor_digit; - break; - - /* minor HTTP version or end of request line */ - case sw_minor_digit: - if (ch == CR) { - state = sw_almost_done; - break; - } - - if (ch == LF) { - goto done; - } - - if (ch == ' ') { - state = sw_spaces_after_digit; - break; - } - - if (ch < '0' || ch > '9') { - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - - if (r->http_minor > 99) { - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - - r->http_minor = r->http_minor * 10 + ch - '0'; - break; - - case sw_spaces_after_digit: - switch (ch) { - case ' ': - break; - case CR: - state = sw_almost_done; - break; - case LF: - goto done; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - break; - - /* end of request line */ - case sw_almost_done: - r->request_end = p - 1; - switch (ch) { - case LF: - goto done; - default: - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - } - } - - b->pos = p; - r->state = state; - - return NGX_AGAIN; - -done: - - b->pos = p + 1; - - if (r->request_end == NULL) { - r->request_end = p; - } - - r->http_version = r->http_major * 1000 + r->http_minor; - r->state = sw_start; - - if (r->http_version == 9 && r->method != NGX_HTTP_GET) { - return NGX_HTTP_PARSE_INVALID_09_METHOD; - } - - return NGX_OK; -} - - -ngx_int_t -ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b, - ngx_uint_t allow_underscores) -{ - u_char c, ch, *p; - ngx_uint_t hash, i; - enum { - sw_start = 0, - sw_name, - sw_space_before_value, - sw_value, - sw_space_after_value, - sw_ignore_line, - sw_almost_done, - sw_header_almost_done - } state; - - /* the last '\0' is not needed because string is zero terminated */ - - static u_char lowcase[] = - "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" - "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0" - "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0" - "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0" - "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" - "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" - "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0" - "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"; - - state = r->state; - hash = r->header_hash; - i = r->lowcase_index; - - for (p = b->pos; p < b->last; p++) { - ch = *p; - - switch (state) { - - /* first char */ - case sw_start: - r->header_name_start = p; - r->invalid_header = 0; - - switch (ch) { - case CR: - r->header_end = p; - state = sw_header_almost_done; - break; - case LF: - r->header_end = p; - goto header_done; - default: - state = sw_name; - - c = lowcase[ch]; - - if (c) { - hash = ngx_hash(0, c); - r->lowcase_header[0] = c; - i = 1; - break; - } - - if (ch == '_') { - if (allow_underscores) { - hash = ngx_hash(0, ch); - r->lowcase_header[0] = ch; - i = 1; - - } else { - r->invalid_header = 1; - } - - break; - } - - if (ch == '\0') { - return NGX_HTTP_PARSE_INVALID_HEADER; - } - - r->invalid_header = 1; - - break; - - } - break; - - /* header name */ - case sw_name: - c = lowcase[ch]; - - if (c) { - hash = ngx_hash(hash, c); - r->lowcase_header[i++] = c; - i &= (NGX_HTTP_LC_HEADER_LEN - 1); - break; - } - - if (ch == '_') { - if (allow_underscores) { - hash = ngx_hash(hash, ch); - r->lowcase_header[i++] = ch; - i &= (NGX_HTTP_LC_HEADER_LEN - 1); - - } else { - r->invalid_header = 1; - } - - break; - } - - if (ch == ':') { - r->header_name_end = p; - state = sw_space_before_value; - break; - } - - if (ch == CR) { - r->header_name_end = p; - r->header_start = p; - r->header_end = p; - state = sw_almost_done; - break; - } - - if (ch == LF) { - r->header_name_end = p; - r->header_start = p; - r->header_end = p; - goto done; - } - - /* IIS may send the duplicate "HTTP/1.1 ..." lines */ - if (ch == '/' - && r->upstream - && p - r->header_name_start == 4 - && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0) - { - state = sw_ignore_line; - break; - } - - if (ch == '\0') { - return NGX_HTTP_PARSE_INVALID_HEADER; - } - - r->invalid_header = 1; - - break; - - /* space* before header value */ - case sw_space_before_value: - switch (ch) { - case ' ': - break; - case CR: - r->header_start = p; - r->header_end = p; - state = sw_almost_done; - break; - case LF: - r->header_start = p; - r->header_end = p; - goto done; - case '\0': - return NGX_HTTP_PARSE_INVALID_HEADER; - default: - r->header_start = p; - state = sw_value; - break; - } - break; - - /* header value */ - case sw_value: - switch (ch) { - case ' ': - r->header_end = p; - state = sw_space_after_value; - break; - case CR: - r->header_end = p; - state = sw_almost_done; - break; - case LF: - r->header_end = p; - goto done; - case '\0': - return NGX_HTTP_PARSE_INVALID_HEADER; - } - break; - - /* space* before end of header line */ - case sw_space_after_value: - switch (ch) { - case ' ': - break; - case CR: - state = sw_almost_done; - break; - case LF: - goto done; - case '\0': - return NGX_HTTP_PARSE_INVALID_HEADER; - default: - state = sw_value; - break; - } - break; - - /* ignore header line */ - case sw_ignore_line: - switch (ch) { - case LF: - state = sw_start; - break; - default: - break; - } - break; - - /* end of header line */ - case sw_almost_done: - switch (ch) { - case LF: - goto done; - case CR: - break; - default: - return NGX_HTTP_PARSE_INVALID_HEADER; - } - break; - - /* end of header */ - case sw_header_almost_done: - switch (ch) { - case LF: - goto header_done; - default: - return NGX_HTTP_PARSE_INVALID_HEADER; - } - } - } - - b->pos = p; - r->state = state; - r->header_hash = hash; - r->lowcase_index = i; - - return NGX_AGAIN; - -done: - - b->pos = p + 1; - r->state = sw_start; - r->header_hash = hash; - r->lowcase_index = i; - - return NGX_OK; - -header_done: - - b->pos = p + 1; - r->state = sw_start; - - return NGX_HTTP_PARSE_HEADER_DONE; -} - - -ngx_int_t -ngx_http_parse_uri(ngx_http_request_t *r) -{ - u_char *p, ch; - enum { - sw_start = 0, - sw_after_slash_in_uri, - sw_check_uri, - sw_uri - } state; - - state = sw_start; - - for (p = r->uri_start; p != r->uri_end; p++) { - - ch = *p; - - switch (state) { - - case sw_start: - - if (ch != '/') { - return NGX_ERROR; - } - - state = sw_after_slash_in_uri; - break; - - /* check "/.", "//", "%", and "\" (Win32) in URI */ - case sw_after_slash_in_uri: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - state = sw_check_uri; - break; - } - - switch (ch) { - case ' ': - r->space_in_uri = 1; - state = sw_check_uri; - break; - case '.': - r->complex_uri = 1; - state = sw_uri; - break; - case '%': - r->quoted_uri = 1; - state = sw_uri; - break; - case '/': - r->complex_uri = 1; - state = sw_uri; - break; -#if (NGX_WIN32) - case '\\': - r->complex_uri = 1; - state = sw_uri; - break; -#endif - case '?': - r->args_start = p + 1; - state = sw_uri; - break; - case '#': - r->complex_uri = 1; - state = sw_uri; - break; - case '+': - r->plus_in_uri = 1; - break; - default: - state = sw_check_uri; - break; - } - break; - - /* check "/", "%" and "\" (Win32) in URI */ - case sw_check_uri: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - break; - } - - switch (ch) { - case '/': -#if (NGX_WIN32) - if (r->uri_ext == p) { - r->complex_uri = 1; - state = sw_uri; - break; - } -#endif - r->uri_ext = NULL; - state = sw_after_slash_in_uri; - break; - case '.': - r->uri_ext = p + 1; - break; - case ' ': - r->space_in_uri = 1; - break; -#if (NGX_WIN32) - case '\\': - r->complex_uri = 1; - state = sw_after_slash_in_uri; - break; -#endif - case '%': - r->quoted_uri = 1; - state = sw_uri; - break; - case '?': - r->args_start = p + 1; - state = sw_uri; - break; - case '#': - r->complex_uri = 1; - state = sw_uri; - break; - case '+': - r->plus_in_uri = 1; - break; - } - break; - - /* URI */ - case sw_uri: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - break; - } - - switch (ch) { - case ' ': - r->space_in_uri = 1; - break; - case '#': - r->complex_uri = 1; - break; - } - break; - } - } - - return NGX_OK; -} - - -ngx_int_t -ngx_http_parse_complex_uri(ngx_http_request_t *r, ngx_uint_t merge_slashes) -{ - u_char c, ch, decoded, *p, *u; - enum { - sw_usual = 0, - sw_slash, - sw_dot, - sw_dot_dot, - sw_quoted, - sw_quoted_second - } state, quoted_state; - -#if (NGX_SUPPRESS_WARN) - decoded = '\0'; - quoted_state = sw_usual; -#endif - - state = sw_usual; - p = r->uri_start; - u = r->uri.data; - r->uri_ext = NULL; - r->args_start = NULL; - - ch = *p++; - - while (p <= r->uri_end) { - - /* - * we use "ch = *p++" inside the cycle, but this operation is safe, - * because after the URI there is always at least one character: - * the line feed - */ - - ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "s:%d in:'%Xd:%c'", state, ch, ch); - - switch (state) { - - case sw_usual: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - *u++ = ch; - ch = *p++; - break; - } - - switch (ch) { -#if (NGX_WIN32) - case '\\': - if (u - 2 >= r->uri.data - && *(u - 1) == '.' && *(u - 2) != '.') - { - u--; - } - - r->uri_ext = NULL; - - if (p == r->uri_start + r->uri.len) { - - /* - * we omit the last "\" to cause redirect because - * the browsers do not treat "\" as "/" in relative URL path - */ - - break; - } - - state = sw_slash; - *u++ = '/'; - break; -#endif - case '/': -#if (NGX_WIN32) - if (u - 2 >= r->uri.data - && *(u - 1) == '.' && *(u - 2) != '.') - { - u--; - } -#endif - r->uri_ext = NULL; - state = sw_slash; - *u++ = ch; - break; - case '%': - quoted_state = state; - state = sw_quoted; - break; - case '?': - r->args_start = p; - goto args; - case '#': - goto done; - case '.': - r->uri_ext = u + 1; - *u++ = ch; - break; - case '+': - r->plus_in_uri = 1; - /* fall through */ - default: - *u++ = ch; - break; - } - - ch = *p++; - break; - - case sw_slash: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - state = sw_usual; - *u++ = ch; - ch = *p++; - break; - } - - switch (ch) { -#if (NGX_WIN32) - case '\\': - break; -#endif - case '/': - if (!merge_slashes) { - *u++ = ch; - } - break; - case '.': - state = sw_dot; - *u++ = ch; - break; - case '%': - quoted_state = state; - state = sw_quoted; - break; - case '?': - r->args_start = p; - goto args; - case '#': - goto done; - case '+': - r->plus_in_uri = 1; - default: - state = sw_usual; - *u++ = ch; - break; - } - - ch = *p++; - break; - - case sw_dot: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - state = sw_usual; - *u++ = ch; - ch = *p++; - break; - } - - switch (ch) { -#if (NGX_WIN32) - case '\\': -#endif - case '/': - state = sw_slash; - u--; - break; - case '.': - state = sw_dot_dot; - *u++ = ch; - break; - case '%': - quoted_state = state; - state = sw_quoted; - break; - case '?': - r->args_start = p; - goto args; - case '#': - goto done; - case '+': - r->plus_in_uri = 1; - default: - state = sw_usual; - *u++ = ch; - break; - } - - ch = *p++; - break; - - case sw_dot_dot: - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - state = sw_usual; - *u++ = ch; - ch = *p++; - break; - } - - switch (ch) { -#if (NGX_WIN32) - case '\\': -#endif - case '/': - state = sw_slash; - u -= 5; - for ( ;; ) { - if (u < r->uri.data) { - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - if (*u == '/') { - u++; - break; - } - u--; - } - break; - case '%': - quoted_state = state; - state = sw_quoted; - break; - case '?': - r->args_start = p; - goto args; - case '#': - goto done; - case '+': - r->plus_in_uri = 1; - default: - state = sw_usual; - *u++ = ch; - break; - } - - ch = *p++; - break; - - case sw_quoted: - r->quoted_uri = 1; - - if (ch >= '0' && ch <= '9') { - decoded = (u_char) (ch - '0'); - state = sw_quoted_second; - ch = *p++; - break; - } - - c = (u_char) (ch | 0x20); - if (c >= 'a' && c <= 'f') { - decoded = (u_char) (c - 'a' + 10); - state = sw_quoted_second; - ch = *p++; - break; - } - - return NGX_HTTP_PARSE_INVALID_REQUEST; - - case sw_quoted_second: - if (ch >= '0' && ch <= '9') { - ch = (u_char) ((decoded << 4) + ch - '0'); - - if (ch == '%' || ch == '#') { - state = sw_usual; - *u++ = ch; - ch = *p++; - break; - - } else if (ch == '\0') { - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - - state = quoted_state; - break; - } - - c = (u_char) (ch | 0x20); - if (c >= 'a' && c <= 'f') { - ch = (u_char) ((decoded << 4) + c - 'a' + 10); - - if (ch == '?') { - state = sw_usual; - *u++ = ch; - ch = *p++; - break; - - } else if (ch == '+') { - r->plus_in_uri = 1; - } - - state = quoted_state; - break; - } - - return NGX_HTTP_PARSE_INVALID_REQUEST; - } - } - -done: - - r->uri.len = u - r->uri.data; - - if (r->uri_ext) { - r->exten.len = u - r->uri_ext; - r->exten.data = r->uri_ext; - } - - r->uri_ext = NULL; - - return NGX_OK; - -args: - - while (p < r->uri_end) { - if (*p++ != '#') { - continue; - } - - r->args.len = p - 1 - r->args_start; - r->args.data = r->args_start; - r->args_start = NULL; - - break; - } - - r->uri.len = u - r->uri.data; - - if (r->uri_ext) { - r->exten.len = u - r->uri_ext; - r->exten.data = r->uri_ext; - } - - r->uri_ext = NULL; - - return NGX_OK; -} - - -ngx_int_t -ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b, - ngx_http_status_t *status) -{ - u_char ch; - u_char *p; - enum { - sw_start = 0, - sw_H, - sw_HT, - sw_HTT, - sw_HTTP, - sw_first_major_digit, - sw_major_digit, - sw_first_minor_digit, - sw_minor_digit, - sw_status, - sw_space_after_status, - sw_status_text, - sw_almost_done - } state; - - state = r->state; - - for (p = b->pos; p < b->last; p++) { - ch = *p; - - switch (state) { - - /* "HTTP/" */ - case sw_start: - switch (ch) { - case 'H': - state = sw_H; - break; - default: - return NGX_ERROR; - } - break; - - case sw_H: - switch (ch) { - case 'T': - state = sw_HT; - break; - default: - return NGX_ERROR; - } - break; - - case sw_HT: - switch (ch) { - case 'T': - state = sw_HTT; - break; - default: - return NGX_ERROR; - } - break; - - case sw_HTT: - switch (ch) { - case 'P': - state = sw_HTTP; - break; - default: - return NGX_ERROR; - } - break; - - case sw_HTTP: - switch (ch) { - case '/': - state = sw_first_major_digit; - break; - default: - return NGX_ERROR; - } - break; - - /* the first digit of major HTTP version */ - case sw_first_major_digit: - if (ch < '1' || ch > '9') { - return NGX_ERROR; - } - - r->http_major = ch - '0'; - state = sw_major_digit; - break; - - /* the major HTTP version or dot */ - case sw_major_digit: - if (ch == '.') { - state = sw_first_minor_digit; - break; - } - - if (ch < '0' || ch > '9') { - return NGX_ERROR; - } - - if (r->http_major > 99) { - return NGX_ERROR; - } - - r->http_major = r->http_major * 10 + ch - '0'; - break; - - /* the first digit of minor HTTP version */ - case sw_first_minor_digit: - if (ch < '0' || ch > '9') { - return NGX_ERROR; - } - - r->http_minor = ch - '0'; - state = sw_minor_digit; - break; - - /* the minor HTTP version or the end of the request line */ - case sw_minor_digit: - if (ch == ' ') { - state = sw_status; - break; - } - - if (ch < '0' || ch > '9') { - return NGX_ERROR; - } - - if (r->http_minor > 99) { - return NGX_ERROR; - } - - r->http_minor = r->http_minor * 10 + ch - '0'; - break; - - /* HTTP status code */ - case sw_status: - if (ch == ' ') { - break; - } - - if (ch < '0' || ch > '9') { - return NGX_ERROR; - } - - status->code = status->code * 10 + ch - '0'; - - if (++status->count == 3) { - state = sw_space_after_status; - status->start = p - 2; - } - - break; - - /* space or end of line */ - case sw_space_after_status: - switch (ch) { - case ' ': - state = sw_status_text; - break; - case '.': /* IIS may send 403.1, 403.2, etc */ - state = sw_status_text; - break; - case CR: - state = sw_almost_done; - break; - case LF: - goto done; - default: - return NGX_ERROR; - } - break; - - /* any text until end of line */ - case sw_status_text: - switch (ch) { - case CR: - state = sw_almost_done; - - break; - case LF: - goto done; - } - break; - - /* end of status line */ - case sw_almost_done: - status->end = p - 1; - switch (ch) { - case LF: - goto done; - default: - return NGX_ERROR; - } - } - } - - b->pos = p; - r->state = state; - - return NGX_AGAIN; - -done: - - b->pos = p + 1; - - if (status->end == NULL) { - status->end = p; - } - - status->http_version = r->http_major * 1000 + r->http_minor; - r->state = sw_start; - - return NGX_OK; -} - - -ngx_int_t -ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri, - ngx_str_t *args, ngx_uint_t *flags) -{ - u_char ch, *p, *src, *dst; - size_t len; - ngx_uint_t quoted; - - len = uri->len; - p = uri->data; - quoted = 0; - - if (len == 0 || p[0] == '?') { - goto unsafe; - } - - if (p[0] == '.' && len > 1 && p[1] == '.' - && (len == 2 || ngx_path_separator(p[2]))) - { - goto unsafe; - } - - for ( /* void */ ; len; len--) { - - ch = *p++; - - if (ch == '%') { - quoted = 1; - continue; - } - - if (usual[ch >> 5] & (1U << (ch & 0x1f))) { - continue; - } - - if (ch == '?') { - args->len = len - 1; - args->data = p; - uri->len -= len; - - break; - } - - if (ch == '\0') { - goto unsafe; - } - - if (ngx_path_separator(ch) && len > 2) { - - /* detect "/../" and "/.." */ - - if (p[0] == '.' && p[1] == '.' - && (len == 3 || ngx_path_separator(p[2]))) - { - goto unsafe; - } - } - } - - if (quoted) { - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "escaped URI: \"%V\"", uri); - - src = uri->data; - - dst = ngx_pnalloc(r->pool, uri->len); - if (dst == NULL) { - return NGX_ERROR; - } - - uri->data = dst; - - ngx_unescape_uri(&dst, &src, uri->len, 0); - - uri->len = dst - uri->data; - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "unescaped URI: \"%V\"", uri); - - len = uri->len; - p = uri->data; - - if (p[0] == '.' && len > 1 && p[1] == '.' - && (len == 2 || ngx_path_separator(p[2]))) - { - goto unsafe; - } - - for ( /* void */ ; len; len--) { - - ch = *p++; - - if (ch == '\0') { - goto unsafe; - } - - if (ngx_path_separator(ch) && len > 2) { - - /* detect "/../" and "/.." */ - - if (p[0] == '.' && p[1] == '.' - && (len == 3 || ngx_path_separator(p[2]))) - { - goto unsafe; - } - } - } - } - - return NGX_OK; - -unsafe: - - if (*flags & NGX_HTTP_LOG_UNSAFE) { - ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, - "unsafe URI \"%V\" was detected", uri); - } - - return NGX_ERROR; -} - - -ngx_int_t -ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name, - ngx_str_t *value) -{ - ngx_uint_t i; - u_char *start, *last, *end, ch; - ngx_table_elt_t **h; - - h = headers->elts; - - for (i = 0; i < headers->nelts; i++) { - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0, - "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value); - - if (name->len > h[i]->value.len) { - continue; - } - - start = h[i]->value.data; - end = h[i]->value.data + h[i]->value.len; - - while (start < end) { - - if (ngx_strncasecmp(start, name->data, name->len) != 0) { - goto skip; - } - - for (start += name->len; start < end && *start == ' '; start++) { - /* void */ - } - - if (value == NULL) { - if (start == end || *start == ',') { - return i; - } - - goto skip; - } - - if (start == end || *start++ != '=') { - /* the invalid header value */ - goto skip; - } - - while (start < end && *start == ' ') { start++; } - - for (last = start; last < end && *last != ';'; last++) { - /* void */ - } - - value->len = last - start; - value->data = start; - - return i; - - skip: - - while (start < end) { - ch = *start++; - if (ch == ';' || ch == ',') { - break; - } - } - - while (start < end && *start == ' ') { start++; } - } - } - - return NGX_DECLINED; -} - - -ngx_int_t -ngx_http_parse_set_cookie_lines(ngx_array_t *headers, ngx_str_t *name, - ngx_str_t *value) -{ - ngx_uint_t i; - u_char *start, *last, *end; - ngx_table_elt_t **h; - - h = headers->elts; - - for (i = 0; i < headers->nelts; i++) { - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0, - "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value); - - if (name->len >= h[i]->value.len) { - continue; - } - - start = h[i]->value.data; - end = h[i]->value.data + h[i]->value.len; - - if (ngx_strncasecmp(start, name->data, name->len) != 0) { - continue; - } - - for (start += name->len; start < end && *start == ' '; start++) { - /* void */ - } - - if (start == end || *start++ != '=') { - /* the invalid header value */ - continue; - } - - while (start < end && *start == ' ') { start++; } - - for (last = start; last < end && *last != ';'; last++) { - /* void */ - } - - value->len = last - start; - value->data = start; - - return i; - } - - return NGX_DECLINED; -} - - -ngx_int_t -ngx_http_arg(ngx_http_request_t *r, u_char *name, size_t len, ngx_str_t *value) -{ - u_char *p, *last; - - if (r->args.len == 0) { - return NGX_DECLINED; - } - - p = r->args.data; - last = p + r->args.len; - - for ( /* void */ ; p < last; p++) { - - /* we need '=' after name, so drop one char from last */ - - p = ngx_strlcasestrn(p, last - 1, name, len - 1); - - if (p == NULL) { - return NGX_DECLINED; - } - - if ((p == r->args.data || *(p - 1) == '&') && *(p + len) == '=') { - - value->data = p + len + 1; - - p = ngx_strlchr(p, last, '&'); - - if (p == NULL) { - p = r->args.data + r->args.len; - } - - value->len = p - value->data; - - return NGX_OK; - } - } - - return NGX_DECLINED; -} - - -void -ngx_http_split_args(ngx_http_request_t *r, ngx_str_t *uri, ngx_str_t *args) -{ - u_char *p, *last; - - last = uri->data + uri->len; - - p = ngx_strlchr(uri->data, last, '?'); - - if (p) { - uri->len = p - uri->data; - p++; - args->len = last - p; - args->data = p; - - } else { - args->len = 0; - } -} - - -ngx_int_t -ngx_http_parse_chunked(ngx_http_request_t *r, ngx_buf_t *b, - ngx_http_chunked_t *ctx) -{ - u_char *pos, ch, c; - ngx_int_t rc; - enum { - sw_chunk_start = 0, - sw_chunk_size, - sw_chunk_extension, - sw_chunk_extension_almost_done, - sw_chunk_data, - sw_after_data, - sw_after_data_almost_done, - sw_last_chunk_extension, - sw_last_chunk_extension_almost_done, - sw_trailer, - sw_trailer_almost_done, - sw_trailer_header, - sw_trailer_header_almost_done - } state; - - state = ctx->state; - - if (state == sw_chunk_data && ctx->size == 0) { - state = sw_after_data; - } - - rc = NGX_AGAIN; - - for (pos = b->pos; pos < b->last; pos++) { - - ch = *pos; - - ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http chunked byte: %02Xd s:%d", ch, state); - - switch (state) { - - case sw_chunk_start: - if (ch >= '0' && ch <= '9') { - state = sw_chunk_size; - ctx->size = ch - '0'; - break; - } - - c = (u_char) (ch | 0x20); - - if (c >= 'a' && c <= 'f') { - state = sw_chunk_size; - ctx->size = c - 'a' + 10; - break; - } - - goto invalid; - - case sw_chunk_size: - if (ctx->size > NGX_MAX_OFF_T_VALUE / 16) { - goto invalid; - } - - if (ch >= '0' && ch <= '9') { - ctx->size = ctx->size * 16 + (ch - '0'); - break; - } - - c = (u_char) (ch | 0x20); - - if (c >= 'a' && c <= 'f') { - ctx->size = ctx->size * 16 + (c - 'a' + 10); - break; - } - - if (ctx->size == 0) { - - switch (ch) { - case CR: - state = sw_last_chunk_extension_almost_done; - break; - case LF: - state = sw_trailer; - break; - case ';': - case ' ': - case '\t': - state = sw_last_chunk_extension; - break; - default: - goto invalid; - } - - break; - } - - switch (ch) { - case CR: - state = sw_chunk_extension_almost_done; - break; - case LF: - state = sw_chunk_data; - break; - case ';': - case ' ': - case '\t': - state = sw_chunk_extension; - break; - default: - goto invalid; - } - - break; - - case sw_chunk_extension: - switch (ch) { - case CR: - state = sw_chunk_extension_almost_done; - break; - case LF: - state = sw_chunk_data; - } - break; - - case sw_chunk_extension_almost_done: - if (ch == LF) { - state = sw_chunk_data; - break; - } - goto invalid; - - case sw_chunk_data: - rc = NGX_OK; - goto data; - - case sw_after_data: - switch (ch) { - case CR: - state = sw_after_data_almost_done; - break; - case LF: - state = sw_chunk_start; - } - break; - - case sw_after_data_almost_done: - if (ch == LF) { - state = sw_chunk_start; - break; - } - goto invalid; - - case sw_last_chunk_extension: - switch (ch) { - case CR: - state = sw_last_chunk_extension_almost_done; - break; - case LF: - state = sw_trailer; - } - break; - - case sw_last_chunk_extension_almost_done: - if (ch == LF) { - state = sw_trailer; - break; - } - goto invalid; - - case sw_trailer: - switch (ch) { - case CR: - state = sw_trailer_almost_done; - break; - case LF: - goto done; - default: - state = sw_trailer_header; - } - break; - - case sw_trailer_almost_done: - if (ch == LF) { - goto done; - } - goto invalid; - - case sw_trailer_header: - switch (ch) { - case CR: - state = sw_trailer_header_almost_done; - break; - case LF: - state = sw_trailer; - } - break; - - case sw_trailer_header_almost_done: - if (ch == LF) { - state = sw_trailer; - break; - } - goto invalid; - - } - } - -data: - - ctx->state = state; - b->pos = pos; - - if (ctx->size > NGX_MAX_OFF_T_VALUE - 5) { - goto invalid; - } - - switch (state) { - - case sw_chunk_start: - ctx->length = 3 /* "0" LF LF */; - break; - case sw_chunk_size: - ctx->length = 1 /* LF */ - + (ctx->size ? ctx->size + 4 /* LF "0" LF LF */ - : 1 /* LF */); - break; - case sw_chunk_extension: - case sw_chunk_extension_almost_done: - ctx->length = 1 /* LF */ + ctx->size + 4 /* LF "0" LF LF */; - break; - case sw_chunk_data: - ctx->length = ctx->size + 4 /* LF "0" LF LF */; - break; - case sw_after_data: - case sw_after_data_almost_done: - ctx->length = 4 /* LF "0" LF LF */; - break; - case sw_last_chunk_extension: - case sw_last_chunk_extension_almost_done: - ctx->length = 2 /* LF LF */; - break; - case sw_trailer: - case sw_trailer_almost_done: - ctx->length = 1 /* LF */; - break; - case sw_trailer_header: - case sw_trailer_header_almost_done: - ctx->length = 2 /* LF LF */; - break; - - } - - return rc; - -done: - - ctx->state = 0; - b->pos = pos + 1; - - return NGX_DONE; - -invalid: - - return NGX_ERROR; -} |