[101] | 1 | /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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| 2 | *
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| 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy
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| 4 | * of this software and associated documentation files (the "Software"), to
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| 5 | * deal in the Software without restriction, including without limitation the
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| 6 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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| 7 | * sell copies of the Software, and to permit persons to whom the Software is
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| 8 | * furnished to do so, subject to the following conditions:
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| 9 | *
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| 10 | * The above copyright notice and this permission notice shall be included in
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| 11 | * all copies or substantial portions of the Software.
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| 12 | *
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| 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 15 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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| 16 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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| 17 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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| 18 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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| 19 | * IN THE SOFTWARE.
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| 20 | */
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| 21 |
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| 22 | #include "httpd.h"
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| 23 | #include "http_pcb.h"
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| 24 | #include <string.h>
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| 25 | #include <stdlib.h>
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| 26 |
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| 27 | #define TRUE 1
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| 28 | #define FALSE 0
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| 29 |
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| 30 | #ifndef _MSC_VER
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| 31 | /* strnlen() is a POSIX.2008 addition. Can't rely on it being available so
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| 32 | * define it ourselves.
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| 33 | */
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| 34 | size_t
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| 35 | strnlen(const char *s, size_t maxlen)
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| 36 | {
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| 37 | const char *p;
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| 38 |
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| 39 | p = memchr(s, '\0', maxlen);
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| 40 | if (p == NULL)
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| 41 | return maxlen;
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| 42 |
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| 43 | return p - s;
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| 44 | }
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| 45 | #endif
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| 46 |
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| 47 | size_t
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| 48 | strlncat(char *dst, size_t len, const char *src, size_t n)
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| 49 | {
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| 50 | size_t slen;
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| 51 | size_t dlen;
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| 52 | size_t rlen;
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| 53 | size_t ncpy;
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| 54 |
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| 55 | slen = strnlen(src, n);
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| 56 | dlen = strnlen(dst, len);
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| 57 |
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| 58 | if (dlen < len) {
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| 59 | rlen = len - dlen;
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| 60 | ncpy = slen < rlen ? slen : (rlen - 1);
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| 61 | memcpy(dst + dlen, src, ncpy);
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| 62 | dst[dlen + ncpy] = '\0';
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| 63 | }
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| 64 |
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| 65 | assert(len > slen + dlen);
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| 66 | return slen + dlen;
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| 67 | }
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| 68 |
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| 69 | int
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| 70 | websvr_request_url(http_parser *p, const char *buf, size_t len)
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| 71 | {
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| 72 | struct httpd_state *context = get_context(p);
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| 73 | strlncat(context->message.request_url,
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| 74 | sizeof(context->message.request_url),
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| 75 | buf,
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| 76 | len);
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| 77 | return 0;
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| 78 | }
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| 79 |
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| 80 | int
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| 81 | websvr_header_field(http_parser *p, const char *buf, size_t len)
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| 82 | {
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| 83 | struct httpd_state *context = get_context(p);
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| 84 | struct message *m = &context->message;
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| 85 |
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| 86 | if (strncmp("Referer", buf, len) == 0) {
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| 87 | m->num_headers = 1;
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| 88 | } else if (strncmp("Host", buf, len) == 0) {
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| 89 | m->num_headers = 2;
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| 90 | } else if (strncmp("Upgrade", buf, len) == 0) {
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| 91 | m->num_headers = 3;
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| 92 | } else if (strncmp("Connection", buf, len) == 0) {
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| 93 | m->num_headers = 4;
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| 94 | } else if (strncmp("Sec-WebSocket-Key", buf, len) == 0) {
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| 95 | m->num_headers = 5;
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| 96 | } else if (strncmp("Origin", buf, len) == 0) {
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| 97 | m->num_headers = 6;
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| 98 | } else if (strncmp("Sec-WebSocket-Protocol", buf, len) == 0) {
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| 99 | m->num_headers = 7;
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| 100 | } else if (strncmp("Sec-WebSocket-Version", buf, len) == 0) {
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| 101 | m->num_headers = 8;
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| 102 | } else {
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| 103 | m->num_headers = 0;
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| 104 | }
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| 105 |
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| 106 | return 0;
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| 107 | }
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| 108 |
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| 109 | int
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| 110 | websvr_header_value(http_parser *p, const char *buf, size_t len)
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| 111 | {
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| 112 | struct httpd_state *context = get_context(p);
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| 113 | struct message *m = &context->message;
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| 114 |
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| 115 | switch (m->num_headers) {
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| 116 | case 1:
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| 117 | strlncat(m->referer, sizeof(m->referer), buf, len);
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| 118 | break;
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| 119 | case 2:
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| 120 | strlncat(m->host, sizeof(m->host), buf, len);
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| 121 | break;
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| 122 | case 3:
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| 123 | strlncat(m->upgrade, sizeof(m->upgrade), buf, len);
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| 124 | break;
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| 125 | case 4:
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| 126 | strlncat(m->connection, sizeof(m->connection), buf, len);
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| 127 | break;
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| 128 | case 5:
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| 129 | strlncat(m->sec_websocket_key, sizeof(m->sec_websocket_key), buf, len);
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| 130 | break;
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| 131 | case 6:
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| 132 | strlncat(m->origin, sizeof(m->origin), buf, len);
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| 133 | break;
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| 134 | case 7:
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| 135 | strlncat(m->sec_websocket_protocol, sizeof(m->sec_websocket_protocol), buf, len);
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| 136 | break;
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| 137 | case 8:
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| 138 | strlncat(m->sec_websocket_version, sizeof(m->sec_websocket_version), buf, len);
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| 139 | break;
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| 140 | }
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| 141 |
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| 142 | return 0;
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| 143 | }
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| 144 |
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| 145 | void
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| 146 | websvr_check_body_is_final(const http_parser *p)
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| 147 | {
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| 148 | struct httpd_state *context = get_context(p);
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| 149 | if (context->message.body_is_final) {
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| 150 | printf("\n\n *** Error http_body_is_final() should return 1 "
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| 151 | "on last on_body callback call "
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| 152 | "but it doesn't! ***\n\n");
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| 153 | assert(0);
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| 154 | }
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| 155 | context->message.body_is_final = http_body_is_final(p);
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| 156 | }
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| 157 |
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| 158 | int
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| 159 | websvr_body(http_parser *p, const char *buf, size_t len)
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| 160 | {
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| 161 | struct httpd_state *context = get_context(p);
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| 162 | strlncat(context->message.body,
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| 163 | sizeof(context->message.body),
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| 164 | buf,
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| 165 | len);
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| 166 | context->message.body_size += len;
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| 167 | websvr_check_body_is_final(p);
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| 168 | // printf("websvr_body: '%s'\n", requests[num_messages].body);
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| 169 | return 0;
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| 170 | }
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| 171 |
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| 172 | int
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| 173 | websvr_count_body(http_parser *p, const char *buf, size_t len)
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| 174 | {
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| 175 | struct httpd_state *context = get_context(p);
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| 176 | assert(buf);
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| 177 | context->message.body_size += len;
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| 178 | websvr_check_body_is_final(p);
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| 179 | return 0;
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| 180 | }
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| 181 |
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| 182 | int
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| 183 | websvr_message_begin(http_parser *p)
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| 184 | {
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| 185 | struct httpd_state *context = get_context(p);
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| 186 | context->message.message_begin_cb_called = TRUE;
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| 187 | return 0;
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| 188 | }
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| 189 |
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| 190 | int
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| 191 | websvr_headers_complete(http_parser *p)
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| 192 | {
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| 193 | struct httpd_state *context = get_context(p);
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| 194 | context->message.method = p->method;
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| 195 | context->message.http_major = p->http_major;
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| 196 | context->message.http_minor = p->http_minor;
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| 197 | context->message.headers_complete_cb_called = TRUE;
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| 198 | context->message.should_keep_alive = http_should_keep_alive(p);
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| 199 | return 0;
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| 200 | }
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| 201 |
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| 202 | int
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| 203 | websvr_message_complete(http_parser *p)
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| 204 | {
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| 205 | struct httpd_state *context = get_context(p);
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| 206 | if (context->message.should_keep_alive != http_should_keep_alive(p)) {
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| 207 | printf("\n\n *** Error http_should_keep_alive() should have same "
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| 208 | "value in both on_message_complete and on_headers_complete "
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| 209 | "but it doesn't! ***\n\n");
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| 210 | assert(0);
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| 211 | }
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| 212 |
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| 213 | if (context->message.body_size &&
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| 214 | http_body_is_final(p) &&
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| 215 | !context->message.body_is_final) {
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| 216 | printf("\n\n *** Error http_body_is_final() should return 1 "
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| 217 | "on last on_body callback call "
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| 218 | "but it doesn't! ***\n\n");
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| 219 | assert(0);
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| 220 | }
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| 221 |
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| 222 | context->message.message_complete_cb_called = TRUE;
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| 223 | return 0;
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| 224 | }
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| 225 |
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| 226 | int
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| 227 | websvr_response_status(http_parser *p, const char *buf, size_t len)
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| 228 | {
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| 229 | struct httpd_state *context = get_context(p);
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| 230 | strlncat(context->message.response_status,
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| 231 | sizeof(context->message.response_status),
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| 232 | buf,
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| 233 | len);
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| 234 | return 0;
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| 235 | }
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| 236 |
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| 237 | http_parser_settings websvr_settings =
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| 238 | {
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| 239 | websvr_message_begin,
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| 240 | websvr_request_url,
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| 241 | websvr_response_status,
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| 242 | websvr_header_field,
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| 243 | websvr_header_value,
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| 244 | websvr_headers_complete,
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| 245 | websvr_body,
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| 246 | websvr_message_complete,
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| 247 | };
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| 248 |
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